30results about How to "Achieve defrosting" patented technology

The invention discloses an electric valve, aiming at the problems that the elasticity of a stopping part for preventing a coil from being loosened corresponding to a valve body is low in the prior art; the technical scheme of the invention comprises a valve seat, a valve needle, the stopping part and a stepping motor which is composed of a rotor and a stator for driving the valve needle and the valve seat to joint or detach; the stopping part is fixedly connected with a stator coil box, and internally concave bending parts which are opposite are additionally arranged above externally convex bending parts on two arm parts extended downwards thereof respectively, a clamping part is fixedly arranged on the outside surface of the stator coil box, a clamping opening adaptated with the clamping part is arranged on a basal part of the stopping part and is buttoned with the clamping part on the coil box to realize a clamping connection. The electric valve has the advantages of low working noise, compact structure and good assembling operability; moreover, the vibration reduction is greatly improved for obtaining accurate flow control; therefore, the electric valve is particularly suitable for refrigerators, air conditioning refrigerating units, water heaters and dehumidifiers, thus realizing defrosting, the flow control and on-off control and the like of a heating system.

The invention discloses a refrigerating system and a control method thereof. The refrigerating system comprises a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger which are sequentially connected end to end to form a circuit. The compressor includes a shell and a compression mechanism. The shell is provided with a main discharge port. The compression mechanism has a first compression chamber and a second compression chamber independent of each other. The first discharge port of the first compression chamber is suitable for connecting with the main discharge port. The gas port is connected, and the refrigeration system also includes a four-way valve with first to fourth valve ports, the main exhaust port is connected to the first valve port, the first suction port of the first compression chamber and the second port of the second compression chamber The suction ports are all connected to the fourth valve port, and the second discharge port of the second compression chamber is selectively connected to one of the main discharge port and the outdoor heat exchanger and blocked from the other. According to the refrigeration system of the present invention, defrosting can be performed while heating, and the defrosting effect is good, the defrosting time is short, and the average heating capacity is high.

The invention relates to the field of air conditioners and discloses an air heat pump type air-conditioning system and a control method thereof. The air heat pump type air-conditioning system comprises a compressor, an indoor heat exchanger, a throttling valve, an outdoor heat exchanger, a gas return valve and a gas-liquid separator, wherein the compressor, the indoor heat exchanger, the throttling valve, the outdoor heat exchanger, the gas return valve and the gas-liquid separator are connected in sequence. A gas outlet of the gas-liquid separator is connected with a gas inlet of the compressor, so that a loop is formed. A defrosting electromagnetic valve is connected between a pipeline located between the outdoor heat exchanger and the gas return valve and a gas outlet of an oil separator. An oil drainage port of the oil separator is connected with one end of an oil return sleeve. The other end of the oil return sleeve is connected with a gas inlet of the gas-liquid separator. According to the air heat pump type air-conditioning system and the control method thereof, defrosting of an outdoor unit can be achieved without switching to a refrigerating mode in the heating process, so that the heating state is kept in a room all the time in the defrosting process, the indoor temperature is not decreased, and user experience is better.

The present invention provides an air-conditioning system, which includes a compressor, a four-way valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger assembly, a first solenoid valve and a second solenoid valve connected in sequence, and the outdoor heat exchanger assembly includes Outdoor heat exchanger; the second solenoid valve is connected in series between the indoor heat exchanger and the throttling element, the indoor heat exchanger after series connection, the second solenoid valve and the first solenoid valve are connected in parallel, or the indoor heat exchanger after series connection, The second solenoid valve and the throttling element are connected in parallel with the first solenoid valve; the four-way valve has first to fourth valve ports, the first valve port is connected to the first port of the outdoor heat exchanger, and the second port of the outdoor heat exchanger is connected to The throttling element, the second valve port is connected to the exhaust end of the compressor, the third valve port is respectively connected to the first port of the indoor heat exchanger and the first solenoid valve, and the second port of the indoor heat exchanger is connected to the second solenoid valve, The fourth valve port communicates with the suction end of the compressor. The air conditioning system of the present invention enables the heat pump air conditioner to quickly defrost the outdoor heat exchanger.

The invention relates to a self-overlapping low-environment-temperature air source heat pump system. The system comprises a refrigerant compression system, a heat supply device, a low temperature system, a high temperature system and an intermediate heat exchanger; the refrigerant compression system, the heat supply device, the high temperature system and the intermediate heat exchanger are connected in sequence through pipelines to form a high-temperature refrigerant circulating system; a low-temperature refrigerant in the low-temperature system secondarily exchanges heat with an air coolingheat exchanger after primary heat exchange by the intermediate heat exchanger; and the low-temperature refrigerant after secondary heat exchange is gathered into a high-temperature refrigerant, not passing through the intermediate heat exchanger, for mixed circulation. The energy efficiency ratio of the air source heat pump system in low-temperature environment is improved; and the use limited environment temperature of the system is lower.

The invention discloses a heat pump system, a control method and an air conditioner. The heat exchanger includes a heat dissipation structure and a first heat exchange passage and a second heat exchange passage arranged on the heat dissipation structure, wherein the first heat exchange passage and the second heat exchange passage have independent fluid inlet and fluid outlet. The heat exchanger provided by the present invention has two mutually independent heat exchange passages, and two different refrigerants can circulate in the two heat exchange passages respectively, and the flow directions of the refrigerants can be the same or different, and the two heat exchange passages have independent The fluid inlet and fluid outlet, so that the two heat exchange channels can be connected to different refrigerant flow channels to obtain different heat exchange effects. The heat exchange between the two heat exchange channels can be carried out through the heat dissipation structure. When one of them When the heat exchange path is heating and the other heat exchange path is cooling, the defrosting of the heating heat exchange path to the cooling heat exchange path can be realized.

The present disclosure relates to a heat pump air conditioner control method and device, electronic equipment, storage media, and vehicles, and relates to the technical field of air conditioners or automotive air conditioners. The control method includes: receiving a heating control signal and acquiring the external ambient temperature, the second a first temperature of a heat exchanger and a second temperature of a second heat exchanger; determine a heating mode according to the heating control signal, the second temperature and the ambient temperature; and determine a heating mode according to the heating mode and the The first temperature determines whether the first heat exchanger needs to be defrosted; if defrosting is required, determine whether the start-up condition of defrost is satisfied according to the ambient temperature and the second temperature; if the start-up condition of defrost is satisfied, then Controlling the second heat exchanger and the defrosting assembly to defrost the first heat exchanger, and determining whether the defrosting is complete; if completed, controlling the first heat exchanger and the first heating assembly to allow The third heat exchanger performs heating. The defrosting of the heat exchanger can be realized.

The invention discloses an electric valve, with key designing points as follows: the structures and the connection relation of coil holders and positioning cards are improved, and the cooperation relations between welding parts are combined with optimally designed welding positions, so that the reliable positioning of the coils is achieved, and the high-pressure resistant capability of the electric valve is improved; wherein the outer edges of the positioning cards fixed on coil cases detour internally to form circuitous parts after extending downwards; the outer edges of the coil holders fixed on valve bases extend out of a limit baffle on which a spacing groove is arranged; the limit baffle is placed in containing parts of the positioning cards; and the top ends of positioning salient points on the circuitous parts of the positioning cards are blocked in the spacing groove. In addition, an annular groove is designed on the valve bases at the lower part of the welding joints to partially cut the influence of the vibration of the valve bases and coils on welding joints. The invention has the advantages of compact structure, and good assembling and operation, and is especially suitable for such electric appliances as refrigerators, air-conditioner cooler units, water heaters and dehumidifiers.