Refrigerating plant |
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IPC classes for russian patent Refrigerating plant (RU 2318166):
  
 Cooling plant / 2313047
Cooling plant comprises closed loop with sealed centrifugal pump with built-in electric motor, as well as condenser with axial fan, thermostatic expansion valve and evaporator. Thermal phial of thermostatic expansion valve is installed at evaporator outlet. Bypass line with throttle is connected in parallel to thermostatic expansion valve. Object to be conditioned is communicated to evaporator through air loop provided with centrifugal fan. Throttle has locking valve and bellows-type pneumatic drive having control cavity communicated with thermal phial of thermostatic expansion valve.
 Device to prevent wet compression in pump / 2303754
Device comprises horizontal sucking pipe and emergency shutdown sensor. Low-frequency ultrasound generator is arranged inside horizontal sucking pipe. Ultra-violet radiation sensor is installed in lower part of horizontal sucking pipe and is spaced 0.1-1 m from low-frequency ultrasound generator.
 Device for automatic protection of cooling compressor against wet stroke / 2285211
Device comprises two temperature gauges, unit for comparing temperatures, unit for generating alarm signal on wet stroke, converters for converting signals from temperature gauges into the alternating signals, frequency synchronizer, amplifier, and protecting relay. The first temperature gauge is set in the line for supplying coolant to the object to be cooled. The second temperature gauge is set at the inlet of the line for withdrawing the vapors of coolant from the object to be cooled to the bridge of switching of the compressors. The converters are synchronized in frequency. The unit for comparing temperatures is made of a transformer with magnetization and two primary windings which are connected in series with the signal converters. The secondary winding is connected with the input of the amplifier whose output is provided with the protecting relay.
Device for automatic protection of cooling compressor against wet stroke / 2285211
Device comprises two temperature gauges, unit for comparing temperatures, unit for generating alarm signal on wet stroke, converters for converting signals from temperature gauges into the alternating signals, frequency synchronizer, amplifier, and protecting relay. The first temperature gauge is set in the line for supplying coolant to the object to be cooled. The second temperature gauge is set at the inlet of the line for withdrawing the vapors of coolant from the object to be cooled to the bridge of switching of the compressors. The converters are synchronized in frequency. The unit for comparing temperatures is made of a transformer with magnetization and two primary windings which are connected in series with the signal converters. The secondary winding is connected with the input of the amplifier whose output is provided with the protecting relay.
Device to prevent wet compression in pump / 2303754
Device comprises horizontal sucking pipe and emergency shutdown sensor. Low-frequency ultrasound generator is arranged inside horizontal sucking pipe. Ultra-violet radiation sensor is installed in lower part of horizontal sucking pipe and is spaced 0.1-1 m from low-frequency ultrasound generator.
Cooling plant / 2313047
Cooling plant comprises closed loop with sealed centrifugal pump with built-in electric motor, as well as condenser with axial fan, thermostatic expansion valve and evaporator. Thermal phial of thermostatic expansion valve is installed at evaporator outlet. Bypass line with throttle is connected in parallel to thermostatic expansion valve. Object to be conditioned is communicated to evaporator through air loop provided with centrifugal fan. Throttle has locking valve and bellows-type pneumatic drive having control cavity communicated with thermal phial of thermostatic expansion valve.
 Refrigerating plant / 2318166
Refrigerating plant comprises vessels and metallic pads that underlie the vessels and are connected to the pipeline through branch pipes. The pipeline is mounted with an inclination and is connected with the pressure-tight tank for collecting spilled ammonia. The tank is connected with the atmosphere through the pipeline and stop valve and is provided with air separator for removing air from its steam zone, branch pipes, and pipeline.
 Method for controlling refrigerator compressor and device for implementing thereof / 2329440
Invention proposes a method for controlling operation of a refrigerator compressor whereby thawing is effected when the temperature inside the refrigerator reaches a predetermined thawing temperature. Refrigerating capacity of the compressor mounted inside the refrigerator is changed depending on the temperature inside the refrigerator by regulating the direction of rotation of the compressor. The refrigerating capacity of the compressor is increased by rotating the compressor in one direction and is decreased by rotating the compressor in another direction, this second direction being reverse to the first one. Prior to thawing the compressor is repeatedly rotated in the second direction and stopped until the predetermined thawing temperature is achieved inside the refrigerator. After thawing the compressor is rotated in the first direction until the predetermined temperature is achieved and in order to maintain this predetermined temperature the compressor is periodically stopped or rotated in the second direction. A device for controlling operation of a refrigerator compressor includes a microcomputer, a working frequency converter, a rotation signal generating unit and a unit for measuring temperature inside the refrigerator. The working range of the temperature measuring unit is predetermined depending on the compressor rotation direction.
 Air conditioner / 2332621
Invention pertains to the technology of air conditioning. The air conditioner has a heat source device and a terminal device, joined by connection pipes for a coolant, in which there is exact determination of whether the contour of the coolant has the required amount of coolant or not. The conditioner can work, when switched in any of the normal working modes, in which the heat source device, consisting of a compressor and a lateral heat exchanger of the heat source device, is joined to terminal devices, consisting of lateral expansion valves and terminal lateral heat exchangers, using connection pipes. Each device is controlled depending on the work load of the terminal devices, or the working mode is determined by the quantity of the coolant, in which the terminal devices carry out cooling operations, and the running power of the compressor is regulated such that, the pressure during evaporation of terminal lateral heat exchangers is constant with control of lateral expansion valves such that, the degree of super heating on outlets openings of terminal lateral heat exchangers have a positive value.
 Cooling device / 2334920
Invention is referred to electric engineering and may be used for cooling devices. Cooling device freezes products without additional inducer due to compressor motor operation in cooling cycle at alternating speed rates from power supply voltage.
 Super-cooling plant, refrigerator (versions) and method of control / 2334921
Invention relates to cooling compartments, refrigerators with proper cooling compartments and methods of control. Super-cooling device contains storage compartments and super-cooling compartments. Storage compartments are supplied with cooled air from cooled air supply unit. Super-cooling compartment is inside storage compartment. Air-cooled super-cooling compartment cools down products. It consists of container and cover. Container forms free space for product storage. Cover is used for opening and closing container outlet. There are holes in cover for cooling air supply to and from super-cooling compartment. There is also a screen in cover to open and close holes. In addition, super-cooling plant contains temperature sensor inside super-cooling compartment and control unit.
 Cooling device / 2347985
Present invention pertains to a cooling device. The cooling device has cooling circuit (9) comprising: i) compressor (2), executing the cooling cycle; ii) evaporator (3), absorbing heat energy of the medium being cooled; iii) condenser (4), transmitting heat energy to an external medium; iv) capillary pipe (5), allowing for expansion of the cooling agent coming out of condenser (4), and carrying the cooling agent to evaporator (3); v) valve (6) with electromagnetic control, controlling flow of the cooling agent and located between condenser (4) and capillary pipe (5); vi) bypass line (7), leveling pressure in the sucking and blowing parts of the compressor (2). The cooling circuit (9) also has: i) valve (16) electromagnetically controlled, which prevent reverse flow to evaporator (3) when compressor (2) is not working and which is in the sucking part of the compressor (2); ii) control mechanism (8), which delays opening of electromagnetically controlled valve (16) by a period, which runs from starting the compressor (2) until a limit value of torque is attained.
 Method for heat pump operation / 2354897
Method for operation of heat pump may be used in refrigerating equipment and in heat pump sets for heat and cold supply to consumer. Mentioned technical problems are solved by method of heat pump operation, which includes serially realised processes of working medium compression and expansion with its transition from compression chamber to expansion chamber and back with heat removal after compression process and heat supply after expansion process, at that compliance of pressure value in the end of expansion process to pressure value in the beginning of compression process is maintained by means of additional working medium supply to expansion chamber, in which expansion process is realised in at least two expansion chambers, and supply of additional working medium in expansion chambers is realised by means of its transfer directly from one expansion chamber to the other.
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FIELD: refrigerating engineering. SUBSTANCE: refrigerating plant comprises vessels and metallic pads that underlie the vessels and are connected to the pipeline through branch pipes. The pipeline is mounted with an inclination and is connected with the pressure-tight tank for collecting spilled ammonia. The tank is connected with the atmosphere through the pipeline and stop valve and is provided with air separator for removing air from its steam zone, branch pipes, and pipeline. EFFECT: enhanced efficiency. 3 cl, 1 dwg
The invention relates to refrigeration and can be used in the chemical, oil and gas industry. Known ammonia refrigeration plant that uses open concrete window wells, and collection of spilled ammonia of them is in a container with pressure below atmospheric (RF Patent No. 2219445, Gushchin A.V. Makarevich O.A., V.A. Gorbunov "Ammonia refrigeration installation). The disadvantages of this setup is the need to maintain pressure in the vessel below atmospheric, which is not always possible, and the absence of clear liquid ammonia from mechanical impurities, oil, and air. The technical result of the invention is to provide a safe and efficient protection of refrigeration units from an accidental release of liquid ammonia at a pressure loss of vessels and apparatus, and storing the collected refrigerant with high quality cleaning for re-use. The technical result is achieved by the fact that under the vessels installed metal pallets, United fittings with tubing made with a slope of not less than 2% and the United sealed reservoir for collecting the spilled ammonia. The technical result is achieved because in ammonia refrigeration installation sealed reservoir for collecting the spilled ammonia soy is inana through the shutoff valve on the pipe with the atmosphere. The technical result is achieved because in ammonia refrigeration installation-tight tank equipped with air-purge drum to remove air from the vapor zone, tube and pipe. The Association of metal trays placed under the vessel refrigeration pressure vessel, nozzles and piping through the valves, greatly simplifies the process of collecting spilled liquid ammonia. For the free discharge of the liquid refrigerant from metal pallets in an airtight container tubing placed with a slope of not less than 2% of the level of placement of the pallets to containers, and to eliminate backwater in sealed containers last pipe connected to the atmosphere. To remove air from the sealed containers, pipes, and pipelines that fall from the atmosphere, the scheme provides air-purge drum. Comparative analysis of the proposed technical solution with the prototype shows that the proposed cooling equipment with the localization system spilled liquid ammonia is layout of pipes, trays and piping made with a bias towards sealed containers that provide free discharge of liquid ammonia in it from pallets and design pallets, airtight container, which is connected to drobopro the house with the atmosphere and equipped with air-purge drum. The features distinguishing the claimed technical solution to the prototype, have been identified in other technical solutions in the study of the art. The drawing shows a diagram of the ammonia refrigeration system localization shed ammonia. Refrigeration with localization spilled liquid ammonia consists of vessels 1, 2, 3, 4, which is placed under metal pallets with 6 nozzles 7, the closed side of the pallet 6 fine filter mesh 18 and shut-off valves 8,10, and pipe 9, is placed under a bias towards an air-tight container 5, the air-purge drum 11, pipe 12 for connecting the steam cavity sealed containers 5 with the atmosphere, isolation 17, pipeline release of oil and impurities 16, the pipe feeding the purified liquid ammonia 13 in the cooling system pipe suction vapor ammonia 14, pipeline supply of hot vapors 15, detectors 19 and level sensors 20, placed on pallets 6 near the hole of the socket 7. Refrigeration with localization spilled liquid ammonia works as follows. When depressurization of one of the vessels 1, 2, 3, 4 refrigerating unit automatically stops, liquid ammonia is poured into a metal tray 6, the detector 19 and the sensor is level 20 automatically opens the shutoff valve 8 on the drain pipe 7 and liquid ammonia, passing through the filter fine mesh 18, the pipe 7 enters the pipe 9, is made with a bias towards 5 and it flows in an air-tight container 5, which is always empty, connected to the atmosphere by the pipe 12 and ready to receive the spilled liquid ammonia. The bottom metal pallets 6 are made with a bias towards placing the drain pipe 7 to ensure complete draining of liquid ammonia from the tray 6, and the pipe 9 is made with a slope of not less than 2% in the direction of sealed containers 5. At the completion of the collection of liquid ammonia (metal pallet 6 blank) at the team level sensor 20 shut-off valve 8 on the drain pipe 7 is closed automatically, and refrigeration installation with lowering the concentration of ammonia in the shop allowed to automatically run. Liquid ammonia is collected in sealed containers 5, contaminated with oil and mechanical inclusions and steam spaces sealed containers 5, the nozzles 7 to shut-off valves 8, the drain pipe 9 is atmospheric air. Therefore, for the purification of liquid ammonia and air removal is necessary to close the shutoff valve on the pipe 12, thereby sealing the container 5 with the pipe 9 and the pipe 7. Then to remove air enters the air-purge drum 11. When you remove all the air vostokovedenie the ΓΌ 11 turned off from work. After sludge collected spilled liquid ammonia from mechanical impurities and oil due to the difference in specific weights of the last collected at the bottom of the tank 5, whence it is removed through the pipe 16 into the sump under the traditional scheme. Cleaned from mechanical impurities and oils liquid ammonia according to the traditional scheme is squeezed out by the pressure of hot vapors by opening the shut-off valves 10 on the line 15, 13 in the cooling system for reuse. After removal of the liquid ammonia from a sealed container 5 shut-off valves 10 on the pipes 13, 15 are closed and sealed container 5 is put on the exhaust fumes of ammonia by opening the shut-off valve 10 to the vapor suction piping 14. When complete removal of ammonia vapors from an air-tight container 5, the nozzles 7 and the tube 9 shut-off valve 10 to the vapor suction piping 14 is closed and the shutoff valve 10 on the pipe 12, connected with the atmosphere open and the system is continuously ready to receive spilled liquid ammonia. Tight tank 5 for collecting spilled liquid ammonia should be covered with insulation 17, sleep under a canopy to protect from direct sunlight and precipitation. This solution allows to considerably simplify the scheme of collecting spilled ammonia, to create effective is cost-effective system for the protection of the refrigeration unit, to improve its security. The economic effect from the use of the proposed technical solution is formed by reducing cost, saving shed ammonia for re-use and enhance the security provided by the automation process. 1. Ammonia refrigeration plant, including vessels, characterized in that the vessels under a metal pallets, United fittings with tubing made with a slope of not less than 2% and the United sealed reservoir for collecting the spilled ammonia. 2. Ammonia refrigeration installation according to claim 1, characterized in that the sealed reservoir for collecting the spilled ammonia is connected through a shutoff valve on the pipe with the atmosphere. 3. Ammonia refrigeration installation according to claim 1, characterized in that tight tank equipped with air-purge drum to remove air from the vapor zone, tube and pipe.
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