32results about How to "Increase unit cooling capacity" patented technology

This kind of double-machine, double-screw cold compressor system mainly consists of evaporator, compressor in low-pressure zone, compressor in high-pressure zone, recycle unit to separate oil, condenser, condenser in the middle part, low-pressure economizer system. There is no inspiration passage between evaporator and compressor in high-pressure zone. The vent on compressor in low-pressure zone connects directly with the air entry on compressor in high-pressure. Compressors low-pressure zone and high-pressure zone share one recycle unit of oil separation. Condenser, condenser in the high-pressure zone, economizer system in low-pressure zone and evaporator are linked up in that order so that part of the refrigerating medium can absorb enough heat to boil and evaporate, provide vapor at a temperature near saturation to the compressor in the high-pressure zone and supply vapor to the compressor in the low-pressure zone. Meanwhile, the other part of refrigerating medium will be passed to the evaporator after being cooled twice for recycle. It is the best choice among the products of refrigeration and deepfreeze in low temperature because of its tidy and compact structure, reasonable layout, small size, stable and credible operation, low cost and high cooling performance.

Provided is an air conditioning refrigeration system. An outlet of a high-back-pressure rotary compressor is connected with an inlet of a condenser, an outlet of the condenser is connected with a liquid inlet of a heat regenerator, a liquid outlet of the heat regenerator is connected with an inlet of an expansion valve, an outlet of the expansion valve is connected with an inlet of an evaporator, an outlet of the evaporator is connected with a gas inlet of the heat regenerator, and a gas outlet of the heat regenerator is connected with an inlet of the high-back-pressure rotary compressor. Refrigerating fluid enters the high-back-pressure rotary compressor firstly, and is compressed into high-temperature high-pressure gas entering the condenser, the gas is condensed into intermediate-temperature high-pressure liquid, and heat is discharged into air. The refrigerating fluid flows through the heat regenerator and enters the expansion valve, and is throttled to be in a low-temperature low-pressure gas-liquid mixing state, then the refrigerating fluid enters the evaporator, heat exchange is carried out on the refrigerating fluid and the air in the environment, the temperature of the air is reduced, and therefore the refrigeration effect is achieved. According to the system, efficiency and stability are improved, oil return is good, the probability of blocking capillary tubes is reduced, and the injection amount of the refrigerating fluid is reduced.

The invention is the vortex tube nozzle and belongs to the refrigeration field. The characteristics are: the flow channel (1) of the nozzle adopts the geometrical symmetry, which is that the central axis line of the flow channel is designed by the equal Mach grads and makes the air flow increase along the axis line to reduce the lost of the air flow; the air intake front channel (2) of the nozzle adopts the design of the same plane with the nozzle channel (1) and the equal air speed, which is to ensure the speed of the normal face of the central line of the air channel consistent to the intake of the vortex tube. The invention improves the refrigeration temperature effect of the vortex tube and increases the chill flow ratio of the maximum refrigeration to improve the unit refrigeration volume and the refrigeration coefficient.

The invention relates to an air-conditioning unit for subway trains with an exhaust supercooler. The air-conditioning unit includes a refrigerant circuit and an air circuit; the refrigerant circuit is filled with refrigerant, including a compressor, a condenser, and a throttling device. and an evaporator, the refrigerant circuit also includes a subcooler, wherein the compressor, condenser, subcooler, throttling device and evaporator are sequentially connected in a cycle; the air circuit includes an evaporator air circuit, an overcooler cooler air circuit and condenser air circuit. Compared with the prior art, the present invention uses the exhaust air of the compartment for cooling without consuming additional energy, and adds a subcooler to increase the cooling efficiency of the air conditioning unit. Simulation results show that after adding the subcooler, the refrigeration performance system 9% improvement.

The invention provides a refrigeration system and an air conditioner. The refrigeration system comprises a compressor, a condenser, a throttling device and an evaporator which are arranged sequentially; the refrigeration system further comprises a motor cooling loop; the motor cooling loop comprises a mixing injector which is arranged between the condenser and the evaporator; the mixing injector mixes a high-temperature high-pressure cooling medium from the condenser and a low-temperature low-pressure cooling medium from the evaporator into a mixed cooling medium and ejects the mixed cooling medium to a cavity of the motor of the compressor; and the mixed cooling medium cools the motor and then flows into the evaporator. According to the refrigeration system, the refrigeration capacity per unit is increased, the refrigeration cycle coefficient is increased, and an energy-saving effect is realized further; and at the same time, the refrigeration system can operate more stably.

The invention relates to a frostless-air cooling and dehumidification system and a method. The system comprises CO2 liquid storage tanks, a manual valve, a regenerator, a first constant-pressure valve, a cooling evaporator, a second constant-pressure valve, an electromagnetic valve, a graded temperature control valve bank, a pneumatic fan, CO adsorbent, CO2 adsorbent and a CO2 storage room, liquid CO2 is throttled and cooled for two times after cold energy is recovered by the preposed regenerator, so that the evaporator cannot be frosted and the cold energy can be prerecovered, the graded temperature control valve bank regulates the flow of the CO2 in the cooling and dehumidification system by grading, so that the evaporation capacity of the cooling evaporator and the refrigerating output of the cooling and dehumidification system can be controlled and the system load and the temperature in an escape capsule can be regulated by grading, the pneumatic fan drives the air in the escape capsule to circulate, and thereby the environment in the escape capsule can be controlled in conditions suitable for living.

The invention provides a motor and an air conditioner comprising the same. The motor is provided with a main shaft, a water inlet, a water outlet, a water channel, a refrigerant inlet and a refrigerant outlet, wherein a rotor is sleeved outside the main shaft; a stator is sleeved outside the rotor; a casing is sleeved outside the stator; an air gap is formed between the rotor and the stator; the water inlet and the water outlet are arranged on the side wall of the casing; the water channel is arranged on the inner wall of the casing and / or the outer wall of the stator and surrounds the stator; both ends of the water channel are respectively connected with the water inlet and water outlet; and the refrigerant inlet and the refrigerant outlet are arranged on the side wall of the casing and are communicated with the air gap. When the motor and the air conditioner are used, the water inlet of the motor is communicated with a cooling water inlet of a condenser, the water outlet of the motor is communicated with a cooling water outlet of the condenser, the refrigerant inlet is communicated with an air escaping pipe of a flash evaporator, and the refrigerant outlet is communicated with an evaporator. According to the motor and the air conditioner, the energy loss during the throttling depressurization caused by an existing cooling scheme is reduced, the consumption of refrigerating output is reduced, the refrigeration circulating coefficient is improved, and the effect of energy saving is achieved, so that the device works more stably and reliably.

The invention discloses an electric vehicle air conditioner system which comprises a refrigerant circulation loop and a coolant circulation loop. The refrigerant circulation loop comprises a compressor for compressing refrigerant, a valve or a valve assembly for switching a refrigerant flow path, a heat exchanger outside a carriage, a heat exchanger in the carriage and a throttle assembly in pipeline connection between the heat exchanger outside the carriage and heat exchanger inside the carriage. The refrigerant circulation loop comprises an electric water pump in pipeline connection, a first double flow channel heat exchanger and at least one fifth heat exchanger. The electric vehicle air conditioner system further comprises a second double flow channel heat exchanger in pipeline connection at an entrance side of a throttle device in the throttle assembly. The electric vehicle air conditioner system can not only prevent cooling devices like a battery from losing effect due to supercooling of coolant, and refrigerating capacity per unit of the electric vehicle air conditioner system can be improved.

The invention provides a circulating device combining diffusing absorption-type refrigeration and vapor compression refrigeration. The circulating device is characterized by comprising a compressor (1), a generator (2), a first condenser (3), a throttling valve (4), a first evaporator (5), a second condenser (6), a second evaporator (7), a gas heat exchanger (8), an absorption device (9), a liquid storage device (10), a liquid heat exchanger (11) and a hydrogen tank (12); a vapor compression refrigeration circulating side and the exhaust port of the compressor (1) are connected with the inlet of the heat exchanger; the outlet of the heat exchanger is connected with the inlet of the first condenser (3); the outlet pipeline of the first condenser (3) is connected with the inlet of the throttling valve (4) through the second evaporator (7); the outlet of the throttling valve (4) is connected with the inlet of the first evaporator (5); and the outlet of the first evaporator (5) is connected with an air suction port of the compressor. According to the invention, the refrigeration coefficient of the refrigerating system can be improved.

The invention relates to a high-efficiency vehicle electric cooling and heating air heat exchange system, comprising a scroll electric compressor, an external heat exchanger, an interior heat exchanger and an economizer; the scroll electric compressor has an auxiliary suction port, and the refrigerant liquid After flowing out from the external heat exchanger, it is divided into two paths: the first refrigerant liquid is supercooled after exchanging heat in the economizer, enters the internal heat exchanger after passing through the electronic expansion valve, and is finally electrically compressed by the vortex The second path enters the economizer after passing through the electronic expansion valve, and turns into gas after cooling the first path refrigerant liquid, and finally enters the scroll electric compressor through the auxiliary suction port. The heat exchange system of the present invention can effectively solve many problems such as insufficient heating and excessively high discharge temperature of the compressor under low temperature conditions.

The invention relates to a quasi-two-stage compression cycle system with ejector synergies, which is a self-cascade compression refrigeration cycle system, including a compressor connected to a condenser, the condenser connected to a first gas-liquid separator, One liquid outlet of the first gas-liquid separator is connected to the first ejector, and the first ejector is connected to the gas supply port of the compressor through the superheated side of the first regenerator, and the other liquid outlet of the first gas-liquid separator is in turn The subcooling side of the first regenerator and the depressurization cooling element are connected to the inlet of the evaporation side of the evaporative condenser, the outlet of the evaporation side is connected to the secondary flow inlet of the first ejector, and the gas outlet of the first gas-liquid separator The evaporator is connected to the evaporator through the second regenerator, the condensation side of the evaporative condenser, the second gas-liquid separator and the third regenerator, and the evaporator is connected to the evaporator through the third regenerator, the second ejector and the second regenerator Connected with the suction port of the compressor, the system of the present invention has strong ability to adapt to variable working conditions and has small throttling loss.