39results about How to "Increase suction superheat" patented technology

The invention aims at providing an air conditioner which is mainly used for solving the problems of poor heat dissipation effect of an electrical appliance box and long defrosting time of an existing air conditioner. The air conditioner is added with a second heat exchanger system on the basis of an original heat exchange system, and further provided with a coolant branch to directly lead a first coolant flowing through a pipeline between an outdoor heat exchanger and an indoor heat exchanger in an air suction port of a first compressor; heat emitted by heating components in the air conditioner is absorbed through the second heat exchanger system and the absorbed heat is transferred to the first coolant in the coolant branch; in such a manner, a suction vapor superheat degree and a mass flow of the first compressor are improved while the heat dissipation problem is well solved, and further, the reliability of the air conditioner is improved and defrosting is accelerated; as a result, the comfort of use for users is improved. Meanwhile, the invention provides a control method of the air conditioner.

The invention discloses an air source heat pump system which can unintermittently supply heat under the working condition of defrosting and relates to an air source heat pump system. The system solves the problems that the prior defrosting mode has drastic change of air suction pressure, stops heat supply and blows cold wind indoors in the defrosting process. The outlet end of a compressor is communicated with a first port of a four-way reversing valve; a second port of the four-way reversing valve is communicated with the inlet end of an indoor machine; the outlet end of the indoor machine is respectively communicated with one end of a first bypass shunt circuit, one end of a second bypass shunt circuit and one end of a third bypass shunt circuit through a throttling mechanism; the other end of the first bypass shunt circuit, the other end of the second bypass shunt circuit and the other end of the third bypass shunt circuit are communicated with a third port of the four-way reversing valve; a fourth port is communicated with the inlet end of a gas-liquid separator; and the outlet end of the gas-liquid separator is communicated with the inlet end of the compressor. The system realizes unintermittent heat supply in the defrosting process, simultaneously reduces drastic change of air suction pressure of the compressor and is more stable in the conversion process of heat supply and defrosting.

The invention discloses an electric car air conditioner system which comprises a compressor, a car interior main heat exchanger, a throttling device and a car exterior heat exchanger, and further comprises a flash vessel and a regenerator, wherein the compressor, the car interior main heat exchanger, the throttling device and the car exterior heat exchanger are sequentially connected; the flash vessel is arranged on a connection pipeline between the car exterior heat exchanger and the car interior main heat exchanger and selectively communicates with a compressor air supply opening through an air supply pipeline; and the regenerator is arranged between the compressor and the car interior main heat exchanger and used for conducting heat exchange on coolants entering an air suction opening of the compressor and coolants at an outlet of the car interior main heat exchanger. Enhanced vapor injection is conducted on the compressor through the flash vessel, the regenerator is arranged between the air suction opening of the compressor and the car interior main heat exchanger, the degree of supercooling at an outlet of a condenser and the degree of air suction superheating of the compressor can be effectively improved under the working condition of low temperature heating, and accordingly the heating capacity of the system is improved, liquid impact of the compressor is prevented, and the system reliability is improved. In addition, the invention provides an electric car with the electric car air conditioner system. The driving mileage can be effectively prolonged.

In one aspect, an evaporator assembly for a refrigeration system is provided. The evaporator assembly includes a pressure vessel having an inlet and an outlet. The outlet is configured to supply refrigerant to a compressor of the refrigeration system. A liquid suction heat exchanger is disposed within the pressure vessel. The liquid suction heat exchanger is configured to receive a liquid refrigerant for heat exchange with the refrigerant in the pressure vessel.

The invention discloses an air source heat pump heating system and a control method thereof, and belongs to the technical field of heat pumps. The air source heat pump heating system is designed to solve the problems that an existing air source heat pump heating system is too high in condenser outlet refrigerant equipment and too low in evaporation temperature. According to the air source heat pump heating system, a heat regenerator first branch communicates between a refrigerant outlet of a condenser and a refrigerant inlet of a throttle element; a heat regenerator second branch communicates between an inlet of a compressor and a refrigerant outlet of a first evaporator; and a second evaporator communicates between the refrigerant outlet of the condenser and a refrigerant inlet of the heat regenerator first branch and is used for carrying out heat exchange on refrigerant flowing out of the condenser. According to the control method of the air source heat pump heating system, the refrigerant flowing out of the condenser sequentially flows through the second evaporator and the heat regenerator first branch and then flows into the throttle element. The air source heat pump heating system can guarantee the proper refrigerant temperature generated before throttling and improve the evaporator heating capacity.

The invention provides a compressor and an air conditioning system. The compressor comprises a pump body assembly, a liquid separator component and a refrigerant pipe. The pump body assembly comprisesa crankshaft, an upper flange, a lower flange, a lower cover plate and an air cylinder assembly. The air cylinder assembly is arranged on the crankshaft in a sleeving manner. The upper flange is arranged on the crankshaft in a sleeving manner and is located on the upper end face of the air cylinder assembly. The lower flange is arranged on the crankshaft in a sleeving manner and is located on thelower end face of the air cylinder assembly. The lower cover plate covers the lower end face of the lower flange. A first channel is arranged on the upper flange. A second channel is arranged on theair cylinder assembly. A third channel is arranged on the lower flange. The second channel is connected between the first channel and the third channel. An air suction opening is arranged on the sidewall of the lower flange, and the third channel communicates with the air suction opening. An outlet pipeline of the liquid separator component is connected with the air suction opening. The first endof the refrigerant pipe is connected with the outlet pipeline, and the second end of the refrigerant pipe is connected with the first channel. According to the compressor and the air conditioning system, the liquid hammer risk of the compressor can be reduced, then a sliding piece is prevented from being separated from a roller, and the performance and reliability of the compressor are improved.

The invention discloses an air conditioning system and a control method for the air conditioning system, and belongs to the field of air conditioners. The air conditioning system comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor, a controller and a bypass control pipe, and the bypass control pipe comprises a first solenoid valve, a second solenoid valve, a first pipe, a second pipe and a third pipe; the first end of the first pipe is communicated with the second end of the second pipe through the first solenoid valve, and the second end of the first pipe is communicated with the outdoor heat exchanger and an air suction opening of the compressor; the first end of the second pipe is communicated with an exhaust opening of the compressor; the second end of the second pipe is communicated with the third pipe through the second solenoid valve; and the controller is used for controlling the first solenoid valve and the second solenoid valve according to the air suction superheat degree and the running mode of the air conditioning system. The problems that in the prior art, when the air conditioner heat exchange performance is low, the air suction superheat degree of the compressor is low is solved.

The invention provides a refrigerating unit and a control method thereof. The refrigerating unit comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and a first throttling device, wherein the first throttling device is arranged between the indoor heat exchanger and the outdoor heat exchanger; the refrigerating unit further comprises a first branch; one end of the first branch communicates with a pipeline between the outdoor heat exchanger and the compressor, and the other end of the first branch communicates with a pipeline between the outdoor heat exchanger and the first throttling device; and the first branch can guide a refrigerant at the outlet end of the outdoor heat exchanger back to the inlet end of the outdoor heat exchanger when the indoor heat exchanger isdefrosted. According to the refrigerating unit and the control method thereof, the flow of the refrigerant entering an air suction port of the compressor can be reduced when the indoor heat exchangeris used for heating and defrosting, the air suction pressure of the compressor is reduced, the exhaust high-pressure of the compressor is reduced, the situation that the high pressure of the refrigerating unit is high in the defrosting period, and consequently unit defrosting is finished in advance is avoided, and the defrosting process is effectively and continuously carried out.

The invention relates to a transcritical CO2 heat pump air conditioner system. The transcritical CO2 heat pump air conditioner system comprises a compressor, a four-way valve, a hot water air cooler, a throttling component, an indoor cold air heat exchanger, an outdoor air cooing heat exchanger and a liquid storage tank. A first three-way valve second port and a second three-way valve second port in the system are communicated and form a first common output end. A first three-way valve third port and a second three-way valve third port are communicated and form a second common output end. The output end of the indoor cold air heat exchanger is connected with the first three-way valve first port. The output end of the outdoor air cooling heat exchanger is connected with a second three-way valve first port. The first common output end is connected with the compressor. The second common output end is connected with the liquid storage tank. In the system, two three-way valves are used for replacing a four-way valve, and in the heating and refrigerating converting process, one three-way valve is enough to independently work every time, wherein one path of work media do not affect the other path of work media, the problem of valve leakage cannot happen, and the reliability of the transcritical CO2 heat pump air conditioner system is improved.

The invention relates to an air conditioning circulation system. A compressor, a condenser, a throttling device, an evaporator and a gas-liquid separator form a refrigerant circulating channel, a pipeline between a second opening of the condenser and the throttling device is provided with a heat exchange device, and the heat exchange device can conduct heat exchange with the gas-liquid separator.Through heat exchange, the temperature of a refrigerant in the pipeline between the second opening of the condenser and the throttling device is lowered, the condensate depression before throttling isincreased, the system refrigerating capacity is improved, and the air conditioner energy efficiency is improved. Meanwhile, through heat exchange, the temperature of a refrigerant in the gas-liquid separator is increased, the sucked air superheat degree of the compressor is increased, the long-time operation reliability of the compressor is ensured, and the efficiency of the compressor is improved advantageously. The invention further discloses an air conditioner.

The invention provides a heat pump system and a control method thereof. The heat pump system comprises a compressor (1), a first heat exchanger (3), a first gas supplementing pipeline and a first heatregenerator (6); the first end of the first gas supplementing pipeline is connected to a gas supplementing port of the compressor (1); a pipeline between the first heat exchanger (3) and the compressor (1) is a first heat exchanging pipeline; and heat exchanging is performed between the first heat exchanging pipeline and the first gas supplementing pipeline through the first heat regenerator (6).The heat pump system can effectively raise the gas sucking temperature of the compressor, it is avoided that liquid is taken during gas sucking of the compressor, the gas sucking superheat degree isimproved, and the unit heating capacity is increased.

The invention provides a secondary throttling double-condensation refrigerating system, an air conditioner and a control method. The refrigerating system comprises a compressor, an evaporator, a first-stage condenser, a second-stage condenser, a first throttling device and a second throttling device, wherein the first-stage condenser is connected with an outlet of the compressor; an outlet of thefirst-stage condenser is connected with an inlet of the second-stage condenser; the first throttling device is further arranged on a pipeline between the first-stage condenser and the second-stage condenser; an outlet of the second-stage condenser is connected with the second throttling device; and the other end of the second throttling device is connected with the evaporator. According to the secondary throttling double-condensation refrigerating system, compared with a primary throttling refrigerating circulation system, under the condition of the same evaporation pressure, superheat degree,supercooling degree and refrigerant circulation amount, the second-stage condenser is fully utilized for releasing latent heat and sensible heat of a refrigerant after primary throttling, and the heating capacity, refrigerating capacity, heating performance coefficient and refrigerating performance coefficient of the system are greatly increased.

The invention provides a compressor assembly, an air conditioner and a control method. The compressor assembly comprises a compressor shell (9) and a gas-liquid separator (3), wherein the gas-liquid separator (3) communicates with external inlet gas and communicates with the interior of the compressor shell (9) through a first outlet pipe (32), a hybrid heat exchange cavity (5) is arranged outsidethe compressor shell (9) and can exchange heat with the compressor shell (9), and the hybrid heat exchange cavity (5) can be communicated with a first inlet pipe (31) through a second inlet pipe (6)and can be communicated with the gas-liquid separator (3) or a first outlet pipe (32) through a second outlet pipe (1). The invention discloses a compressor assembly. The compressor is advantaged in that refrigerant before entering the gas-liquid separator enters the hybrid heat exchange cavity to be heated and then is guided into the compressor shell to be compressed, the air suction superheat degree of the compressor is effectively increased, the situation that liquid is carried in air suction of the compressor is prevented, liquid impact is prevented, and running reliability and safety of the compressor are guaranteed.

The invention provides a compressor, a control method and an air conditioner. The compressor comprises a static vortex plate, an upper support and a bearing, the static vortex plate is provided with an air suction port and a side through hole, and the side through hole communicates with the air suction port; the compressor further comprises an air suction pipe, a first bypass pipeline and a secondbypass pipeline, and one end of the air suction pipe communicates with the air suction port; the first end of the first bypass pipeline communicates with the side through hole, the second end of thefirst bypass pipeline can guide air to the upper support, the third end of the second bypass pipeline can introduce the air from the upper support, and the fourth end of the second bypass pipeline communicates with the air suction pipe; or the fourth end of the second bypass pipeline communicates with the air suction pipe, the third end of the second bypass pipeline can guide the air to the uppersupport, the second end of the first bypass pipeline can introduce the air from the upper support, and the first end of the first bypass pipeline communicates with the side through hole. According tothe compressor, an external pipeline is led out from each of the side wall of the air suction pipe and the side wall of the static vortex plate of the compressor, so that the cooling effect of the upper support bearing is achieved, meanwhile, the overhigh air suction superheat degree is avoided, and the operation reliability of the compressor is improved.

The invention discloses an adaptive ultra-high-efficiency gas-liquid separator for a parallel compressor unit, which comprises a casing, a separation chamber is arranged in the casing, an inlet pipe, an air outlet pipe and an oil return pipe, and the separation chamber includes a gravity separation chamber and an oil return pipe. The centrifugal separation chamber arranged around the separation chamber; the outlet end of the inlet pipe communicates with the inlet end of the centrifugal separation chamber; the air outlet pipe is used to output the gas passing through the gravity separation chamber; the housing is also provided with a diversion chamber located below the separation chamber and the collection chamber located below the diversion chamber; the lower ends of the gravity separation chamber and the centrifugal separation chamber communicate with the diversion chamber; a deflector is provided in the diversion chamber to divert the gas separated by the centrifugal separation chamber to the gravity The separation chamber and the liquid are diverted to the collection chamber; one end of the oil return pipe is connected with the collection chamber, and the other end is connected with the air outlet pipe. The invention has the advantages of small size, convenient modular assembly, high separation efficiency, avoiding harmful overheating of suction, ensuring reliable oil return within the full load range, and the like.

The invention relates to the technical field of air conditioners, and discloses an electric vehicle heat pump air conditioning system and an electric vehicle. The heat pump air conditioning system comprises an air supplementing branch, an air supply expansion valve and an intermediate heat exchanger; a compression unit comprises an air supplementing compressor, the first end of the air supplementing branch is connected to an air supplementing opening of the air supplementing compressor, and the second end of the air supplementing branch is connected to a pipeline between an in-vehicle heat exchange unit and a main path expansion valve; a low-temperature side of the intermediate heat exchanger and the air supply expansion valve are connected to the air supplementing branch in series, and ahigh-temperature side of the intermediate heat exchanger is connected to a pipeline between the in-vehicle heat exchange unit and the main expansion valve in series. And the air supplementing branch also flows through at least one of a motor, a battery and an electric controller of the vehicle. According to the heat pump air conditioning system of the electric vehicle and the electric vehicle provided by the invention, recovery of at least one part of heat of the vehicle motor, the battery and the electric controller is realized through the air supplementing branch, and extra heat absorption income is obtained; therefore, the heating capacity is effectively increased, and the heating efficiency is improved.

The invention provides a three-throttling enthalpy-increasing double-condensing refrigeration system and an air conditioner and a control method. The refrigeration system comprises a compressor, an evaporator, a first-stage condenser, a second-stage condenser, a first throttling device and a second throttling device, wherein the first-stage condenser is connected with an outlet of the compressor,and an outlet of the first-stage condenser is connected with an inlet of the second-stage condenser; a flash evaporator is further arranged between the second throttling device and the evaporator, aninlet pipeline of the flash evaporator communicates with the second-stage condenser, a liquid outlet pipeline of the flash evaporator communicates with the evaporator, a gas outlet pipeline of the flash evaporator communicates with a fill port of the compressor, and a sixth throttling device is further arranged on the liquid outlet pipeline. Compared with a one-throttling and two-throttling refrigeration cycle system, the three-throttling enthalpy-increasing double-condensing refrigeration system has the advantages that the heating capacity, the refrigerating capacity, the coefficient of heating performance and the coefficient of refrigerating performance of the system are greatly increased.

The invention provides a compressor and an air conditioning system. The compressor comprises a motor component, a pump body component, a liquid distribution device component, a refrigerant pipe and acontrol valve; the pump body component comprises a crankshaft, an upper flange, a lower flange, a lower cover plate and a cylinder component; one side, away from the cylinder component, of the lower flange is provided with a cavity; the side wall of the lower flange is provided with a first air suction hole and a second air suction hole which communicate with the cavity; the liquid distribution device component is arranged at the external of a shell component; an outlet pipeline of the liquid distribution device component is connected with the first air suction hole; the first end of the refrigerant pipe is connected with an inlet pipeline or an outlet pipeline of the liquid distribution device component; the second end of the refrigerant pipe extends downward from an upper direction of the motor component and is connected with the second air suction hole; and the control valve is arranged on the refrigerant pipe to control the opening degree of the refrigerant pipe according to the degree of superheat of exhausted air of the compressor. By adopting the compressor provided by the invention, the risk of liquid hammer of the compressor can be lowered, so that separation of a slidingsheet of the compressor from a roller is prevented, vibration noise of the compressor is lowered, and the performance and the reliability of the compressor are improved.

The invention discloses a heat recovery multi-connection outdoor unit and a heat recovery multi-connection unit. The outdoor unit has a first interface and a second interface. The outdoor unit includes: a compressor, which has an exhaust port and an air return port; The component has a first valve port to a fourth valve port, the first valve port is connected to the exhaust port, the second valve port is connected to the return air port, and the third valve port is connected to the first port; outdoor heat exchanger, outdoor heat exchange The first end of the heat exchanger is connected to the fourth valve port, and the second end of the outdoor heat exchanger is connected to the second port; a plurality of one-way valves, each one-way valve has a conduction end and a cut-off end, each one-way valve One-way conduction in the direction from the conduction end to the cut-off end, a plurality of one-way valves include the first to sixth one-way valves; a throttling element, the throttling element is connected in series between the third one-way valve and the outdoor heat exchanger ;Gas-liquid separator. The outdoor unit with multiple heat recovery units of the present invention is beneficial for the compressor to obtain the degree of suction superheat, and at the same time can also improve the energy efficiency of the multiple heat recovery units.

The invention provides an air conditioning system and a compressor oil temperature adjusting device used by the air conditioning system. A compressor is provided with a shell and comprises a heat exchange device, wherein the heat exchange device is attached to the shell, and a heat exchange inlet and a heat exchange outlet are formed in the heat exchange device. According to the air conditioning system and the compressor oil temperature adjusting device used by the air conditioning system, the heat exchange device is adopted, an adaptive heat exchange medium is introduced into the heat exchange device according to the exhaust temperature of the compressor, the temperature of the heat exchange medium is utilized to raise or lower the temperature of a mixture of the compressor, so that the purpose of effectively adjusting the temperature of the mixture is achieved, and refrigerant is introduced into the heat exchange device; and when the mixture is cooled, the liquid refrigerant can be vaporized by utilizing the temperature of the mixture, so that the suction superheat degree of the compressor is increased, and the problem of liquid impact of the compressor can be solved on the premise of not increasing the volume of a gas-liquid separator.

The invention provides a double-enthalpy-increase double-condensation three-stage-compression refrigerating system, an air conditioner and a control method. The refrigerating system comprises a compressor, an evaporator, a primary condenser, a secondary condenser, a first throttle device and a second throttle device. A first flash evaporator is further arranged between the first throttle device and the secondary condenser, a first liquid outlet pipeline of the first flash evaporator communicates with the secondary condenser, and a sixth throttle device is further arranged on the first liquid outlet pipeline. A second flash evaporator is further arranged between the second throttle device and the secondary condenser, a second inlet pipeline of the second flash evaporator communicates with the secondary condenser, a seventh throttle device is further arranged on the second inlet pipeline, and the air replenishing pressure of a first air replenishing opening is larger than that of a second air replenishing opening. According to the double-enthalpy-increase double-condensation three-stage-compression refrigerating system, compared with a primary throttle or secondary throttle or tertiary throttle refrigerating circulating system, the heating amount, the refrigerating amount, the heating performance parameters and the refrigerating performance parameters of the system are greatly increased.

A transcritical carbon dioxide air conditioning system for an electric bus comprises a compressor, a three-way valve, an external heat exchanger, a first drying filter, a second drying filter, an internal heat exchanger, a gas-liquid separator and a heat regenerator, an outlet of the compressor is connected with a first connector of the three-way valve, and a second connector of the three-way valve is connected with an inlet of the external heat exchanger. A third connector of the three-way valve is connected with an inlet of the in-vehicle heat exchanger, one path of an outlet of the out-vehicle heat exchanger is sequentially connected with the first ball valve, the first drying filter, the in-vehicle heat exchanger, the gas-liquid separator, the heat regenerator and an air suction port of the compressor, and the other path of the outlet of the out-vehicle heat exchanger is connected with the gas-liquid separator. A pure natural environment-friendly CO2 refrigerant is adopted, the problem that a pure electric bus is low in heating efficiency in winter is solved, combined valves such as a pressure release valve and a ball valve are adopted, the situation that the system is blocked or abnormal high pressure of the system is caused under other abnormal conditions is prevented, and the heat regenerator in the system can effectively increase the suction superheat degree of the compressor and prevent liquid impact of the compressor.

The invention discloses an air inlet flange assembly which comprises a flange body, wherein an axle hole is formed in the middle of the flange body in a penetrating manner in an axial direction of the flange body; an air suction opening is formed in a periphery face of the flange body; an air inlet cavity communicated with an air cylinder is arranged on the upper edge of the flange body in a penetrating manner in an axial direction of the flange body; an air suction passage communicating the air suction opening with the air inlet cavity is arranged on the end face of the flange body. The air inlet flange assembly can avoid liquid refrigerant impact in an air suction process of a compressor. The invention further discloses a horizontal compressor applying the air inlet flange assembly.

The present invention provides an air-injection enthalpy-increasing heat pump air conditioning system, a control method, a control device and an air conditioner, wherein the air-injecting enthalpy-increasing heat pump air-conditioning system includes: a compressor, including an exhaust port, an injection port and an air return port; a reversing assembly , including the first valve port to the fourth valve port; the outdoor heat exchanger; the first heat exchanger and the first solenoid valve, the first heat exchanger includes the first heat exchange flow path and the second heat exchange flow path; the second A heat exchanger and a second electromagnetic valve, the second heat exchanger includes a third heat exchange flow path and a fourth heat exchange flow path, the first end of the third heat exchange flow path is connected to the second end of the second heat exchange flow path end, the second end of the third heat exchange flow path is connected to the second end of the first electromagnetic valve, the first end of the fourth heat exchange flow path and the third valve port of the reversing assembly are connected to the second end of the second electromagnetic valve The first end, the second end of the second electromagnetic valve is connected to the first end of the first heat exchange flow path; and the gas-liquid separator. Through the technical scheme of the invention, the compressor can be prevented from running wet when the air conditioner is defrosting.

A regenerator with gas-liquid separation function and a refrigeration and air-conditioning system using the regenerator, the regenerator includes a shell, an inner tube and a baffle arranged in the shell; the inner tube penetrates through the bottom wall of the shell, and The bending distribution in the housing passes through the bottom wall of the housing; the baffle is fixed in the housing and distributed between the bent inner tubes; the connection between the two ends of the inner tube and the bottom of the housing is respectively opened with a liquid inlet and a liquid Outlet, when in use, the liquid inlet is connected to the condenser, and the liquid outlet is connected to the throttle valve; there is an oil return hole at the junction of the baffle and the bottom wall of the shell, and an air inlet and an air outlet are opened on the side of the shell. When the air inlet is connected to the evaporator, the air outlet is connected to the compressor; the baffle divides the interior of the shell into multiple shells; the invention also discloses a refrigeration and air-conditioning system using the regenerator; the regenerator can both It meets the heat recovery needs of the refrigeration and air-conditioning system, and can also play the role of gas-liquid separation, liquid storage, and timely return of lubricating oil in the liquid receiver; in the refrigeration and air-conditioning system of the present invention, a regenerator is added, and the storage liquid container.

A gas liquid separator (1), comprising: sealed spaces separately formed by a housing (11) and an inner container (12), the inner container (12) being inside of the housing (11); the space between the housing (11) and the inner container (12) forms a supercooling passage, and the space inside of the inner container (12) forms a superheating passage; the superheating passage has a gas inlet pipe (13) for introducing in refrigerant steam and has a gas outlet pipe (14) for discharging the refrigerant steam out of the gas liquid separator (1); the supercooling passage has a liquid inlet pipe (15) for introducing in refrigerant liquid and has a liquid outlet pipe (16) for discharging the refrigerant liquid out of the gas liquid separator (1); the refrigerant liquid inside of the supercooling passage and the refrigerant steam inside of the superheating passage undergo heat exchange.

The invention discloses an air conditioner and a control method of the air conditioner. The air conditioner comprises a compressor, a reversing assembly, an indoor heat exchanger, an outdoor heat exchanger, a refrigerant mixer, a control valve, a first temperature detecting device, a second temperature detecting device and a controller, wherein the compressor is provided with a gas return hole anda gas exhaust hole, a throttle element is in series connection between the second end of the outdoor heat exchanger and the second end of the indoor heat exchanger; the refrigerant mixer is providedwith a mixing cavity; the mixing cavity is provided with a first inlet, a second inlet and an outlet; the first inlet is connected to a gas return interface, and the outlet is connected to a gas return hole; the control valve is in series connection between the gas exhaust hole and the second inlet; and the controller is electrically connected to the first temperature detecting device, the secondtemperature detecting device and the control valve separately to control opening and closing of the control valve according to detected results of the first temperature detecting device and the secondtemperature detecting device. The air conditioner disclosed by the invention can improve returned gas superheat degree of the compressor, facilities realizing efficient reliable operation of the airconditioner, and is low in cost.

Provided is a heat radiation and circulation system of an air conditioner, which adopts a flat-pipe micro-passage aluminium radiator (6) and comprises a compressor (1). An exhaust pipe of the compressor (1) is connected to a four-way directional control valve (2), the four-way directional control valve (2) is connected to an outdoor heat exchanger (4), the outdoor heat exchanger (4) is connected to an indoor heat exchanger (10) via an electronic expansion valve (11), the indoor heat exchanger (10) is connected to a shut-off valve (3), the shut-off valve (3) is connected to an air suction pipe of the compressor (1) via the four-way directional control valve (2), the air suction pipe of the compressor (1) is connected to the compressor (1) via a gas-liquid separator (9), a refrigeration cycle branch is arranged on the air suction pipe, the refrigeration cycle branch comprises a branch electromagnetic valve (5), the branch electromagnetic valve (5) is connected to the flat-pipe micro-passage aluminium radiator (6), and a temperature sensor (8) is arranged on the flat-pipe micro-passage aluminium radiator (6); an air suction electromagnetic valve (7) is also arranged on the air suction pipe; and the air suction electromagnetic valve (7) is connected in parallel to the branch electromagnetic valve (5). The present invention can improve the heat radiation efficiency, recover the heat emitted from an air-conditioning module, and ensure the operating stability of an air-conditioning unit.