Air precooler dryer
【1】 Working principle of air precooler
According to the principle of refrigeration and dehumidification, the refrigeration dryer uses the totally closed compression refrigeration system to cool down the compressed gas discharged by the air compressor, so that a large number of saturated water vapor and oil mist condensate drops contained in it are discharged by the automatic drainer after being separated by gas and water. The saturated compressed gas with higher temperature enters the precooler of the cold dryer, and exchanges heat with the dry and cold gas from the evaporator in the precooler. After the temperature is reduced, it enters the evaporator of the refrigeration system, and exchanges heat with the refrigerant steam for the second time, so that its temperature is close to the evaporation temperature of the refrigerant. During the two cooling processes, the water vapor in the compressed gas can be condensed into liquid state The water drops enter into the gas-water separator along with the air flow, the separated liquid water is discharged out of the machine through the automatic drainer, and the dry compressed gas with lower temperature enters into the precooler to exchange heat with the wet saturated gas just entering, so as to improve its temperature, so as to obtain the dry compressed gas with lower water content (i.e. lower dew point) and low relative humidity at the outlet of the dryer. Because of reliable operation, convenient management and low operating cost, freeze dryer has become the first choice of air compressor station purification equipment in various industries.
Product features:
For refrigeration and air system, after accurate calculation by experts, more than 20% margin is reserved for design parameters.
The refrigeration compressor adopts the international advanced rotary or scroll type, piston type totally enclosed refrigeration compressor and semi enclosed screw type refrigeration compressor (above 30HP), with stable operation, low noise, reliable performance, long power saving life, high energy efficiency ratio, and protection grade of IP54 (dustproof and splash proof).
High quality copper tube with pure aluminum fins is selected for heat exchanger and air condenser, with high heat exchange efficiency, small volume and compact structure. The cylinder material is stainless steel or carbon steel galvanized to avoid secondary pollution to the compressed air.
The refrigeration control elements are advanced Danfoss in Denmark, Sportan and alco in the United States. They have excellent performance. They have throttling and depressurizing functions of thermal expansion valve, energy regulation functions of hot gas bypass valve, over-current, over load, high and low pressure protection functions of refrigerant, etc.
The gas-liquid separator adopts the organic combination of cyclone separation and stainless steel wire mesh mist catching, which has a complete gas-liquid separation effect, avoids the secondary evaporation of water, and ensures the drying effect of the cold dryer. It has better performance than cyclone separator, lower cost than filter gas-liquid separator, and higher performance price ratio.
The water condenser is a high-quality low fin copper tube with slow water flow, multi stroke, high heat exchange efficiency, and it is not suitable for scaling in long-term use.
The automatic drainer is set according to the demand, and the water removal and energy saving are achieved; the floating ball type and electronic timing can be selected.
External rotor cooling fan, large air volume, low noise, frequent start and stop for long life.
Pressure parts shall be manufactured, tested and accepted in accordance with GB150-1998 steel pressure vessel and GB151-1999 shell and tube heat exchanger, and shall be subject to the supervision of Safety Technical Supervision Regulation for pressure vessels.
The structure design of the equipment is reasonable and convenient for maintenance; the surface is thermally sprayed with plastic, with beautiful appearance and no rust; there is no foundation installation, stable operation and no vibration, low maintenance rate, no consumables, and low operation cost. No special person is required for continuous operation.
4、 Working condition and technical index
Air inlet temperature: normal temperature type ≤ 50 ℃, high temperature type ≤ 80 ℃
Cooling mode: air cooling (water cooling)
Ambient temperature: ≤ 40 ℃ (air cooling)
Pressure dew point: 1.7 ℃ ~ 10 ℃ (0.7MPa)
Refrigerant: R-22 or R134a, R404A, r507 and other fluorine-free environmental protection refrigerants can be used according to customer requirements
Air inlet pressure: 0.2 ～ 1.0MPa (order accepted under 6.4Mpa)
Pressure loss: ≤ 0.02 MPa
Water inlet temperature of cooling water: ≤ 32 ℃ (water cooling)
Cooling water inlet pressure: 0.15-0.4 MPa (water cooling)
After sales service commitment
Dear customer
Under your support and trust, in order to protect your interests, so that you get better and better service. In order to create a better brand, improve the popularity of the enterprise and establish the image of the enterprise, we solemnly promise to you in the spirit of "all the pursuit of high quality and customer satisfaction", with the principle of "preferential price, thoughtful service and reliable product quality":
1、 Preparation before installation
1. The equipment provided by us is of good quality, brand new and unused, and has passed the factory quality inspection.
2. 3 days before delivery, we will inform the end user in advance of the preparation conditions for equipment installation in oral or written form, and deliver the goods on time.
2、 Services provided during the warranty period
1. The user department of the buyer can come to our company for free equipment operation training.
2. During the use of the equipment, our customer service department will make a follow-up call on the use of the equipment.
3. We guarantee 12 months free warranty for the equipment. The warranty period is calculated from the arrival of the goods at the site. During the warranty period, we will strictly abide by the relevant laws and regulations of the people's Republic of China to provide "Three Guarantees" and other after-sales services for the goods, unless otherwise specified in the contract. 4. According to the requirements of customers, carry out technical guidance on the use and other aspects.
5. In case of equipment failure during the warranty period, after receiving the customer's call and "Notice of equipment failure", the equipment shall be maintained remotely. If the maintenance fails, the equipment shall be rushed to the site within 24 hours within the scope of Jiangsu, Zhejiang and Shanghai for treatment, and the equipment shall be rushed to the site within 48 hours outside the scope of Jiangsu, Zhejiang and Shanghai for treatment.
3、 Services provided after warranty period
After the warranty period, the equipment shall enjoy the same service quality within the warranty period. In case of equipment failure, the Seller shall provide paid services, and the buyer shall pay for services and accessories.
4、 During the warranty period, paid maintenance service will be implemented in the following cases
(1) Damage caused by man-made or irresistible natural phenomena;
(2) Failure or damage due to improper operation;
(3) Failure or damage due to modification, decomposition and assembly of products.
Welcome to call for details!
Company: Hangzhou Jiajie Electromechanical Equipment Co., Ltd
Address: 268 Shida Road, Jianggan District, Hangzhou
Tel: 0571-86458031 Fax: 05