Low Pressure Screw Air Compressor

ULPPRO Low Pressure Screw Air Compressor, a reliable manufacturer from China, select high-efficiency, large-displacement main engines, combined with permanent magnet motors, truly achieving small motors with large displacement. Its rotors are large and low rotational speed, have the advantages of high efficiency, low noise, small vibration and low energy consumption. It is with independent oil pump forced lubrication design and customized larger-capacity oil-gas separation.

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Product Description

Advantage and structure feature

Air End

Screw rotor profile design patent: ZL94 1 12198.4
Design of air end pressure: 0.3MPa~1.80MPa
Air end volume efficiency of compression: ≥ 95%
Rotor diameter and center distance: Large
Low power consumption: the level of energy efficiency index 1
Direct driven: transmission ratio 1:1
low noise
Rotor material: special carbon steel SAE1141
Air end bearing: imported SKF brand
Working temperature is up to 110 degrees under the continue running conditions

Intelligent Control

RS485 communication mode transmission control signal

Intelligent PID flow regulation mode

Closed loop control, with ideal dynamic characteristics and control precision

Accurately controlled torque

Fast system response speed, good acceleration and deceleration characteristic

Constant pressure control, avoid generation exceed energy losses

Vectorial Inverter

High utilization rate, panel disassembly, switching use, memory function
Perfect protection: phase loss, phase-to-phase short circuit, short circuit to ground, over current, over voltage, under voltage, overload, and overheating can be realized
Motor thermal protection circuit board enhanced coating, dustproof and anti-corrosion;
The system has low heat generation, powerful overload capability and unique current limiting technology
Proprietary and efficient control program
Ultra-wide frequency design and wider range of control

Inlet Valve

High vacuum degree: 700mmHg
Large suction area
Low load energy consumption in unloaded operation
Fast check: prevent unloading and shutdown oil injection
Solenoid valve: Italy ODE brand
Valve seal: fluorine rubber material
Integrated design, low failure and maintenance rate
Cast aluminum, avoid rusting and deformation affected by temperature.

Features of permanent magnet variable frequency air compressors

1. Ultra-low temperature lift design, compressor allows for stable operation of low frequency

2. Adopt closed-loop vector control system, PID adjustment is more accurate and stable

3. When the operating frequency is above 50%, the overall compressor system still maintains high volumetric efficiency

4. Stable startup, gentle acceleration, avoid current peak impact, and the power grid is protected from impact and overload startup

5. Precise voltage regulation, achieve target pressure fluctuation within 0.01MPa, reduce unnecessary energy loss. Pressure increases 0.1MPa, the electricity consumption rises by 6%.

Technical Parameters for Low Pressure Screw Air Compressor (Variable Frequency)

Model	Power		Rated Pressure		Free Air Delivery			Weight		Dimension			Outlet size
	Power		Rated Pressure		Free Air Delivery			Weight		L	W	H	Outlet size
	kW	hp	bar	psig	l/s	m³/min	cfm	kg	lb	mm	mm	mm	inch/mm
ULP-55AVL	55	75	5	73	258	15.5	547	2600	5720	2370	1500	1850	DN65
ULP-75AVL	75	100	5	73	317	19	671	3100	6820	2570	1700	1800	DN80
ULP-90AVL	90	125	5	73	380	22.8	805	3800	8360	2970	1700	1900	DN80
ULP-110AVL	110	150	5	73	458	27.5	971	4250	9350	2970	1700	1900	DN80
ULP-132AVL	132	175	5	73	547	32.8	1158	5150	11330	3370	2150	2250	DN100
ULP-160AVL	160	215	5	73	692	41.5	1465	6150	13530	3370	2150	2250	DN125
ULP-185AVL	185	250	5	73	758	45.5	1607	6450	14190	3770	2150	2250	DN125
ULP-200AVL	200	270	5	73	842	50.5	1783	7250	15950	3770	2150	2250	DN150
ULP-220AVL	220	300	5	73	925	55.5	1960	8450	16390	4200	2300	2250	DN150
ULP-250AVL	250	340	5	73	1008	60.5	2136	8700	16940	4200	2300	2250	DN150

Technical Parameters for Low Pressure Screw Air Compressor (Fixed-speed)

Model	Power		Rated Pressure		Free Air Delivery			Weight		Dimension			Outlet size
	Power		Rated Pressure		Free Air Delivery			Weight		L	W	H	Outlet size
	kW	hp	bar	psig	l/s	m³/min	cfm	kg	lb	mm	mm	mm	inch/mm
ULP-55AL	55	75	5	73	253	15.2	537	2500	5500	2370	1500	1850	DN65
ULP-75AL	75	100	5	73	310	18.6	657	3000	6600	2570	1700	1800	DN80
ULP-90AL	90	125	5	73	377	22.6	798	3300	7260	2970	1700	1900	DN80
ULP-110AL	110	150	5	73	452	27.1	957	3800	8360	2970	1700	1900	DN80
ULP-132AL	132	175	5	73	542	32.5	1148	4500	9900	3370	2150	2250	DN100
ULP-160AL	160	215	5	73	675	40.5	1430	5500	11000	3370	2150	2250	DN125
ULP-185AL	185	250	5	73	753	45.2	1596	6300	13860	3770	2150	2250	DN125
ULP-200AL	200	270	5	73	837	50.2	1773	7100	15620	3770	2150	2250	DN150
ULP-220AL	220	300	5	73	918	55.1	1946	8300	16060	4200	2300	2250	DN150
ULP-250AL	250	340	5	73	1003	60.2	2126	8500	16500	4200	2300	2250	DN150