♦ Compressor high and low pressure controller
♦ Compressor oil flow controller
♦ Electronic overcurrent protector
♦ Low pressure sensor
♦ Independent circuit breaker and thermal protector
♦ PLC controller plus color touch screen
Other
♦ Unit high and low pressure gauge
♦ Each main pipe is equipped with maintenance service valve
♦ Insulation materials for suction, economizer and cooling pipe
♦ Unit suction stop valve
Customer options
♦ Refrigerant R22 or R507
♦ Reservoir vertical or horizontal
♦ Branching of liquid supply branch pipe and gas return branch pipe
♦ Cooling mode: air cooling, water cooling and evaporative cooling
♦ Oil cooling mode: air cooling, water cooling and thermal siphon
♦ Compressors and configurations of other brands
Customer can add items
♦ Compressor exhaust pipe is equipped with silencer
♦ High and low pressure sensor
♦ Condensate pressure regulating valve
♦ Heat recovery unit
♦ Hot gas defrosting function
♦ Refrigeration oil
Gas liquid separator
♦ sturdy metal frame
♦ lifting ring
♦ damping pad
Reservoir assembly
♦ The reservoir is equipped with a 28bar safety valve
♦ Stop valve at inlet and outlet of reservoir
♦ Reservoir with sight glass
♦ Pipeline sight glass
♦ Drying filter drum at the outlet of liquid reservoir (including filter element)
♦ The outlet of the drying filter drum is equipped with a stop valve
Exhaust assembly
♦ External oil separator (with oil mirror)
♦ Check valve at exhaust outlet of oil separator
♦ Stop valve at oil outlet of oil separator
♦ Oil heater
♦ Oil temperature controller
♦ Oil level controller
Oil circuit assembly
♦ Oil outlet filter barrel (including filter element)
♦ Oil circuit ball valve
♦ Oil circuit solenoid valve
♦ Oil circuit sight glass
♦ Electronic oil flow switch
Single compressor assembly
♦ Suction and exhaust stop valve
♦ Exhaust check valve
♦ Compressor damping pad
♦ Suction filter barrel (including filter element)
♦ Primary liquid spray cooling system
Economizer assembly (used when evaporation temperature ≤ – 20 ℃)
♦ Economizer
♦ ECO expansion valve, ECO solenoid valve, ECO sight glass, ECO stop valve
Liquid supply branch pipe and air return branch pipe assembly
♦ The number of liquid supply branch pipes and gas return branch pipes shall be determined according to the product samples
♦ The branch pipe adopts hard straight pipe
♦ Compressor high and low pressure controller
♦ Compressor oil flow controller
♦ Low pressure sensor
♦ Independent circuit breaker and thermal protector
♦ PLC controller plus color touch screen
Other
♦ Unit high and low pressure gauge
♦ Each main pipe is equipped with maintenance service valve
♦ Insulation materials for suction, economizer and cooling pipe
♦ Unit suction stop valve
Customer options
♦ Refrigerant R22 or R507
♦ Reservoir vertical or horizontal
♦ Branching of liquid supply branch pipe and gas return branch pipe
♦ Cooling mode: air cooling, water cooling and evaporative cooling
♦ Oil cooling mode: air cooling, water cooling and thermal siphon
♦ Compressors and configurations of other brands
♦ Oil level control electronic or mechanical
Customer can add items
♦ Compressor exhaust pipe is equipped with silencer
♦ High and low pressure sensor
♦ Heat recovery unit
♦ Hot gas defrosting function
♦ Refrigeration oil
Gas liquid separator
♦ sturdy metal frame
♦ lifting ring
♦ damping pad
Reservoir assembly
♦ The reservoir is equipped with a 28bar safety valve
♦ Stop valve at inlet and outlet of reservoir
♦ Reservoir with sight glass
♦ Pipeline sight glass
♦ Drying filter drum at the outlet of liquid reservoir (including filter element)
♦ The outlet of the drying filter drum is equipped with a stop valve
Exhaust assembly
♦ Oil separator
♦ Check valve at exhaust outlet of oil separator
♦ packless
Oil circuit assembly
♦ Oil storage bottle (with oil mirror)
♦ Inlet and outlet stop valve of oil storage bottle
♦ Oil circuit check valve
♦ Oil outlet filter
♦ Oil circuit ball valve
♦ Oil level controller
Single compressor assembly
♦ Suction and exhaust stop valve
♦ Compressor damping pad
♦ Suction filter barrel (including filter element)
♦ Oil sight glass
♦ Oil pressure controller (refers to oil pump lubrication mode)
♦ Crankcase heater
♦ Low temperature compressor cylinder head fan
Subcooler assembly (applicable to single machine and two-stage machine)
♦ Subcooler
♦Subcooled expansion valve, subcooled solenoid valve, subcooled sight glass, subcooled shut-off valve
Liquid supply branch pipe and air return branch pipe assembly
♦ The number of liquid supply branch pipes and gas return branch pipes shall be determined according to the product samples
♦ The branch pipe adopts hard straight pipe
♦ There is no need to set up a machine room, and the condensing unit can be directly placed in the outdoor ventilation place or on the roof;
♦ The condensing unit can be placed away from the crowd to reduce the impact of noise;
♦ The condenser and electric cabinet are placed on the unit to reduce the on-site installation work and effectively shorten the project construction period;
♦ Humanized design, that is, the operation screen and the unit are designed separately. The operation screen can be placed near the indoor cold storage to facilitate operation and protect the screen.
The air cooled condensing unit is mainly used in small and medium-sized cold storage. The air-cooled high-efficiency condenser is adopted. The condenser is designed as V-type, W-type or H-type, which is placed on the upper part of the unit and integrated with the compressor to facilitate on-site installation. Working conditions from – 35℃ to 12℃ can be used.
Air cooled condensing unit basic configuration
♦ Compressor: it adopts international imported brands such as BITZER, LFCOM, and FUJIHOLL, with quality assurance, safety and reliability. Special power supply can be customized.
♦ High efficiency oil separation: separate the refrigeration oil of the system as much as possible and supply it to the compressor at the same time.
♦ Liquid reservoir: according to the conventional configuration, the volume can also be appropriately increased according to the actual situation.
♦ Gas liquid separator: conventional unit does not have heat exchanger, low-temperature refrigeration system, and gas-liquid separator has heat exchange function.
♦ Filter: equipped with detachable filter barrel, it is convenient to replace the filter element.
♦ Solenoid valve: Danfoss brand, which can be installed on the unit or on the cold storage side.
♦ Expansion valve: electronic expansion valve is adopted, which is more energy-saving than conventional mechanical expansion valve. Wider adjustment range and more accurate control.
Product introduction
The explosion-proof unit mainly depends on the explosion-proof grade requirements of the electric control system. There is no difference between the refrigeration system and the conventional refrigeration system.
The explosion-proof compressors used are all certified by the explosion-proof Institute, and the explosion-proof certificate can be provided. The other motors are explosion-proof motors with explosion-proof grade requirements. All power lines and control lines are protected by explosion-proof hoses without exposed wire ends to ensure safe operation.
Application field of explosion-proof unit
The whole machine can be realized in the range of 60 ~ 400hp. The evaporation temperature is – 50 ℃ ~ 15 ℃. At the same time, it can also be applied to different evaporation temperatures. It is generally used in flammable and explosive places such as chemical plants.
♦ The water pump should be set at the water inlet of the unit;
♦ The expansion tank needs to be set at the inlet of the pump;
♦ The design and implementation of the water pipeline must ensure that the loss of cooling capacity is small, and prevent the pipeline and unit from freezing in winter;
♦ A filter should be set at the inlet of the pump to prevent foreign matter from entering the unit to affect the performance of the unit or damage the unit;
♦ When the water quality in the installation area of the unit is poor, water treatment equipment should be installed to avoid scaling of the heat exchanger, resulting in reduced performance and damage of the unit, and the efficiency of the unit will be reduced due to scaling.
♦ An exhaust valve should be installed at the highest point of the water pipeline to improve the operation efficiency of the water system;
♦ When installing the flow switch, care should be taken to avoid condensation on the flow switch, which may lead to the failure of the water-cut protection function;
♦ The unit should be grounded reliably to avoid electric shock;
♦ If the unit is shut down for more than 2 hours in winter and 5 hours in summer, the controller needs to be powered on for 2 hours to heat the crankcase before starting operation;
♦ During long-term operation, the maximum inlet water temperature of the evaporator of the unit should be lower than 20°C.
Semi closed screw chiller / glycol unit is one of the refrigeration product series developed by our company. It is composed of single or multiple compressors. The product has a compact structure and can provide – 20 to 0 ° C glycol aqueous solution and + 2 ° C to + 20 ° C chilled water. It can be used as the host of ice storage, low-temperature air supply air conditioning and other places with food and pharmaceutical chilled water requirements.
Product advantages are mainly reflected in:
♦ Automatic microcomputer control, high degree of automation; At the same time, the controller adopts the most advanced MCU technology abroad, which has good reliability and strong anti-interference ability;
♦ LCD display, which can view the operation status of the unit, and control and modify the operation parameters of the unit;
♦ RS485 communication interface can realize the remote control of the unit. If the RS485 communication signal is connected to the computer, it can form an advanced central refrigeration system controlled by the computer;
♦ The heat exchanger adopts high-efficiency steel pipe, with high heat exchange efficiency, small volume and light weight.
♦ Compressor: It adopts international imported brands such as BITZER, LFCOM, and FUJIHOLL, etc., quality assurance, safe and reliable power supply, and customizable power supply.
♦ Efficient oil separation: The refrigeration oil of the system is separated as much as possible, and it is supplied to the compressor at the same time.
♦ Accumulator: According to the conventional configuration, the volume can also be appropriately increased according to the actual situation.
♦ Gas-Liquid Separator: Conventional unit does not have heat exchanger, low temperature refrigeration system, gas-liquid separator with heat exchange function.
♦ Filter: Equipped with detachable filter barrel, it is convenient to replace the filter element.
♦ Solenoid valve: Danfoss brand, can be installed on the unit or on the side of the cold storage.
It is a cooling processing equipment that uses vacuum precooling technology and vacuum pump to extract air and water vapor in the vacuum tank to reduce the air pressure in the vacuum box. Under low pressure, the boiling point of water decreases, the latent heat of evaporation increases, and the free water on the surface of the cooled object vaporizes, taking away the heat of itself and the bad environment, so as to achieve the cooling effect.
Product advantages
1. Fast cooling speed: the required refrigeration temperature can be reached in 20-30 minutes.
2. Uniform cooling: the vaporization of free water on the surface of the product takes away its own heat to achieve the purpose of cooling and realize uniform cooling from inside to outside.
3. Clean and sanitary: under the bad vacuum environment, it can sterilize or inhibit bacterial reproduction and prevent cross pollution.
4. Thin layer drying effect: it has unique effects such as healing skin damage or inhibiting expansion.
5. Not limited by packaging: as long as there are pores in the packaging, the articles can be cooled evenly.
6. High freshness: it can keep the original color, aroma and taste of food and prolong the shelf life.
7. High precision: equipped with precision digital display temperature and humidity controller to accurately control vacuum and humidity.
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