Hainan cold storage equipment

Compressor and an electric motor mounted in a welding or brazing by the inner welded housing, sharing a spindle, so that not only canceled the seal device, and greatly mitigate and reduce the overall size and weight of the compressor. Exposed in the outer casing welded only suction and discharge pipes, tubes and other technology such as sprinkler pipe) necessary pipes and compressor input power terminals such as stents. Since the entire compressor motor unit is mounted in a sealed enclosure can not open, easy to open an internal repair, which requires high reliability using such a compressor, long life, the entire cooling system installation requirements are high, This fully enclosed structure is generally used for high-volume production of small cold refrigerant compressor. 1. Overview of the compressor of the compressor (compressor conveying gas and increase the gas pressure of a driven fluid machine. Heart refrigeration system, low-temperature low-pressure refrigerant gas sucked from the suction pipe, driven by a motor operated piston to compress After the exhaust pipe of the refrigerant gas high temperature and pressure, to provide power for the refrigeration cycle, in order to achieve compression → condensation → expansion → evaporation heat of the refrigeration cycle compressor generally composed of a housing, a motor, a cylinder, a piston, the control device start and thermal protection and cooling system. cooling cold and cooling are two natural oils. Usually compressors are single-phase AC electric household refrigerators and air conditioners as a power source, the structure is basically the same principle. Both use refrigeration agents differ 2. manufacturing methods are pipelined compressor production machining plant includes a foundry to produce a cylinder, a piston shaft valve, connecting rod, crankshaft, cover and other parts; motor rotor assembly workshop, The stator; stamping plant manufactured housing, etc. and then final assembly plant for assembly, welding, cleaning and drying, the final inspection packaging factory most compressor manufacturers do not produce starters and thermal protection, but according to the needs from. market purchases. 3. species present in domestic refrigerators and air conditioners are positive displacement compressors, which can be divided into reciprocating and rotary piston, crank, connecting rod mechanism or a piston reciprocating compressors, crank, slide tube mechanism, the shaft rotary crank mechanism used according to the application range can be divided into low backpressure, the back-pressure, high backpressure low backpressure evaporation temperature -35 -15 ℃ generally used for household refrigerators , food freezers, etc. in back-pressure evaporation temperature of -20 0 ℃ generally used for soda fountain, milk and other refrigerated containers high backpressure evaporation temperature of -5 15 ℃ generally used for room air conditioners, dehumidifiers, heat pumps, etc. 4. specifications, quality specifications of the compressor according to the input power is divided between the general specifications of each difference of about 50W addition, there are divided by the cylinder volume of the compressor main performance indicators: input, output power, coefficient of performance, refrigeration amount, starting current, running current, voltage, frequency, cylinder volume, noise, etc. to measure the performance of a compressor, mainly in three aspects of comparative weight, efficiency and noise from according to our standards, its safety performance test is based on The main project GB4706.17-2004 provisions project is electrical strength, leakage current, stall, and overload running test etc. The air conditioner compressor performance tests, carried out according to the provisions of GB5773 2004. In addition, the product type and When major changes occur that may affect the performance of the product in production, the continuous production of more than one year or a year later reproduction, and factory inspection results are quite different type testing, type tests must 5. Packaging and storage compressor transport packaging and transport can be handled under the contract for large quantities of imported compressor, usually then shipping containers compressor should be fixed within the box into the carton firm, and there is moisture shock measures. Storage and transportation allowed upside down and stored in a well-ventilated warehouse, relative humidity not more than 80% can not corrosive gases 6. Notes compressor only when in use, pull out the sealing rubber plug allowed. Off or loose plugs found in storage and transportation, processing, then the line should be checked to save. After the refrigerator compressor and air conditioner compressor must be CCC certification, in order to sell. Compressor load operation What are the requirements? First load operation of the compressor is compressor should be running empty and purged after completion of the following requirements for load operation: 1 car gradually close the vent after cutting or water cutting blow, 1/4 rated operating pressure of the compressor 1 hours; run at half of the rated pressure of 4-8 hours. 2 compressor running at minimum pressure, no anomalies, the party may be gradually increased pressure; 3 for large high-pressure compressor, under nominal operating time of not less than 24 hours; 4 during operation, check the following items: lubricating oil pressure, temperature, and oil supply situation. Before dispensing tube into the hydraulic system of not less than 1 kg / cm 2 or within the crankcase lubricating oil-wet body should be: crosshead compressors shall not exceed 60 ℃. No crosshead shall not exceed 70 ℃. 2 compressor smooth operation, all moving parts should sound normal. 3 measuring the inlet and outlet water temperature and check the cooling water supply, cooling water flow and does not allow intermittent bubbles and plug and so on. Cooling Water temperature should not exceed 40 ℃. 4 each national mapping agency Flange part, seals, intake and exhaust cutting, cylinder head and water sets, not leak, oil spills, leaks. 5 intake and exhaust cutting work should be normal, safe cutting sensitive. 6 connecting parts without loosening. 7 Measuring the exhaust temperature and pressure values ??at all levels shall comply with the technical conditions. 8 motor fever situation and the current value should be specified. 5 After the operation is completed, the dismantling of the following items: 1 Remove the cutting gas levels, all levels of the front cylinder head, check the cylinder mirror friction and, if friction marks should find out why. 2 Check the piston rod surface friction, it should not scuffed and pull road phenomenon. 3 Remove the gas fitting situation cutting at all levels, cutting sheet and cutting inspection body, cutting-chip, if the crack to change the spare parts. 4 Check the cross slide, with the body rail friction surface friction situations. 5 Remove the connecting rod watts, cross pin, check Friction friction surface. 6 Replace the fuselage oil. After initial operation of the compressor; the parts were extravagant around together, lubricants and cleaning effect, a large number of finely divided metallic powder into the oil, and therefore, the machine after 24 hours of work shall be made to replace all oil. After 200 hours operation, the oil once again renewed. After two changes, oil changes at regular maintenance requirements. In order to fit even extravagant, we must have full lubricants throughout the initial operation. Compressor common faults and their causes and solutions