30results about How to "Achieve defrosting" patented technology

The invention discloses an electrically operated 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 proposal 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. As the two arm parts of the stopping part are respectively provided with two bending parts, higher elasticity is obtained under the condition of same deformation, the fixation is reliable and the working noise is low; the valve has the advantages of compact structure and good assembling operability; moreover, the vibration reduction is greatly improved for obtaining accurate flow control; therefore, the 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 relates to a method and a device for defrosting, pressure maintaining and energy conservation of a refrigerator, and pressure relief and damping during start-up of a compressor. The device for the defrosting and pressure maintaining of the refrigerator and the pressure relief and damping during the start-up of the compressor comprises an evaporator, a compressor, a condenser, a start-up/defrosting branch, a capillary and a filter. The compressor is connected with the evaporator, the start-up/defrosting branch and the condenser respectively; the condenser is connected with the filter; the filter is connected with the capillary; and the capillary is connected with the evaporator. The device is characterized by further comprising an electromagnetic valve and a one-way valve, wherein the electromagnetic valve is arranged among the evaporator, the capillary and the start-up/defrosting branch, and the one-way valve is arranged between the compressor and the condenser. The method and the device have the benefits that defrosting is realized without an electric heater, pressure maintaining and energy conservation are realized without shutdown, pressure relief and damping are realized during the start-up of the compressor, and problems of difficult start-up of a frequency conversion system of the refrigerator and great vibration during the start-up are solved. The method and the device are applicable to various refrigerators.

The invention relates to the field of fuel cell vehicles, in particular to a thermal management control method and system and a fuel cell vehicle. The method comprises the steps: adjusting the heat exchange between a cooling circulation loop and a warm air circulation loop through a heat exchange loop, wherein heat exchange is conducted between the heat exchange loop and the cooling circulation loop through a heat exchanger; controlling the heat exchange loop to be communicated with the warm air circulation loop through a three-way valve; controlling the opening degree of the three-way valve according to the temperature parameter relation of the cooling circulation loop and the warm air circulation loop, and adjusting the liquid flow in the pipeline of the heat exchange loop and the warm air circulation loop. According to the embodiment of the invention, the heat dissipated when the fuel cell works is transferred to the warm air circulation loop, and the opening degree of the three-way valve in the warm air circulation loop is adjusted according to the temperature parameters of different loops, so that the temperature in a whole vehicle cabin and the temperature of the fuel cell can be accurately controlled under the condition of high-power operation of the fuel cell; moreover, the efficient utilization of waste heat can be ensured under the conditions that the fuel cell runs at low power and the available waste heat quantity is smaller.

The invention discloses a distributed water-steam-cold-heat-electricity combined supply device and method. The device comprises a cooling and heating module, a power supply module, a humidifying module, a power consumption module and a water consumption module; operation electricity is provided by a fuel cell stack, when heating is performed, part of circulating water directly enters an outdoor heat exchanger, the other part of the circulating water enters a cell cooling loop before entering the outdoor heat exchanger and further enters the outdoor heat exchanger to exchange heat with a compressor loop and circulate, the stack can be cooled and the circulating water can be preheated while the heating target is realized, the work of the compressor is reduced while the temperature of the stack is reduced, and the operation efficiency of the stack and the whole device is improved; when cooling is performed, part, flowing out and then flowing in a cooling tower, of the outdoor circulating water directly enters the outdoor heat exchanger, the other part enters the cell cooling loop, further flows into a cooling tower water tank again and flows out for circulation, the stack can be cooled while the cooling target is realized, and the operation efficiency of the stack is improved.

The invention discloses an air conditioning circulation system and a control method thereof, and relates to the technical field of air conditioners. The air conditioning circulation system and the control method thereof are used for solving the problems that the multi-split air conditioning system is low in the temperature of produced domestic hot water and poor in the energy-saving effect. The air conditioning circulation system comprises a hot water producing switching structure and a first four-way valve; the hot water producing switching structure comprises a first connector, a second connector and a third connector; the first four-way valve comprises a port A, a port B, a port C and a port D; the first connector of the hot water producing switching structure is connected with a firstend of a hot water generator, the second connector is connected with an exhaust end of a compressor, and the third connector is connected with the port B of the first four-way valve; the port A of thefirst four-way valve is connected with a first end of an indoor heat exchanger, the B port is further connected with a second end of the hot water generator, the port C is connected with a first endof an outdoor heat exchanger, and the port D is connected with an air suction end of the compressor; and a second end of the indoor heat exchanger is connected with a second end of the outdoor heat exchanger.

The invention discloses a solar high-temperature phase change mass memory heat storage air source heat pump system and a defrosting method thereof. The system comprises a solar high-temperature phase change mass memory heat storage circular system and the like. The solar high-temperature phase change mass memory heat storage circular system comprises a heat storage pump, a heat storage pipeline and a solar energy collector; the high-temperature phase change mass memory exothermic defrosting system comprises a high-temperature phase change mass memory heat reservoir, a defrosting pipeline, a defrosting pump and an outdoor evaporator; the outdoor evaporator comprises an evaporation defrosting pipe bundle, the evaporation defrosting pipe bundle comprises an inner evaporation pipe bundle, a defrosting pipe bundle and an outer evaporation pipe bundle; the air source heat pump heating circular system comprises an indoor condenser, a gas replenishing and enthalpy increasing compressor, an outdoor evaporator, a main circuit loop pipeline, a main circuit loop throttling valve, an economizer, a bypass pipeline and a bypass throttling valve. According to the defrosting method, clean and reproducible solar energy is utilized to conduct defrosting rapidly and efficiently all day long, the energy consumption of the system is reduced, and the requirement for defrosting in an extreme weather can be met, the comfort of heating can be ensured, and better services can be provided for switching from coal to electricity in the north.

The invention provides an air conditioner control system and a control method, the air conditioner control system comprises a compressor (1), an indoor heat exchanger (2) and an outdoor heat exchanger(3), wherein a branch (4) is further formed on a pipeline between a high pressure exhaust end (11) of the compressor (1) and the indoor heat exchanger (2), a base plate heating module (5) is arrangedon the branch (4) and can heat an air conditioner base plate, and the other end of the branch (4) is connected back to a low pressure suction end (12) of the compressor. According to the air conditioner control system and the control method, a refrigerant can be used for deicing, the energy can be fully used, the energy efficiency is improved, power dissipation is reduced, energy conservation andemission reduction are realized, and the reliability problem is solved; the problem that ice is difficult to melt on the base plate under the extreme cold condition so that the fan blade and the iceblock are in friction can be solved, and the problems that the operation noise of the outer machine is larger and mechanical faults are easy to occur in the severe cold area are solved from the source.

The invention relates to the technical field of air conditioners, and discloses a defrosting control method for an air conditioner. The air conditioner comprises an electrochemical compressor and a first heat exchanger which communicates with the electrochemical compressor through a hydrogen release channel and is installed in the outdoor environment. The method comprises the steps that the frosting state of the first heat exchanger is obtained; and if it is determined that the first heat exchanger is in the frosting state, the hydrogen flow of the hydrogen release channel communicating with the electrochemical compressor is reduced. By means of the method, the power consumption of the air conditioner can be reduced. The invention further discloses a defrosting control device for the air conditioner and the air conditioner.

The invention relates to the technical field of vehicle manufacturing, in particular to a heat pump air conditioning system and a vehicle. The heat pump air conditioning system comprises a heat pump air conditioning unit, a heating piece cooling unit, a battery cooling unit and a first pipeline, wherein the heat pump air conditioning unit comprises an outdoor heat exchanger; the heating piece cooling unit comprises a heating piece cooling plate and a first heat exchanger which are connected with each other and form a loop; the battery cooling unit comprises a battery cooling plate and a secondheat exchanger which are connected with each other and form a loop; the first heat exchanger and the second heat exchanger are connected in series through the first pipeline, and the first pipeline is connected with the outdoor heat exchanger in parallel. According to the heat pump air conditioning system, the problem that in the prior art, the heat generated by a heating device can be recycled or cooled, the number of valves in the system is more and the corresponding joint is more, so that the risk of refrigerant leakage of the system is increased are avoided.

The invention provides an air conditioner defrosting control method and device and an air conditioner. The air conditioner comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas pipeline and a liquid pipeline, the air conditioner further comprises a defrosting pipeline, one end of the defrosting pipeline communicates with the gas pipeline, and the other end of the defrosting pipeline is connected to the outdoor heat exchanger. Whether the air conditioner meets the defrosting condition or not is judged; and if yes, the high-temperature refrigerant in the compressor is controlled to flow to the indoor heat exchanger from the gas pipeline, and meanwhile the high-temperature refrigerant in the compressor is controlled to flow to the outdoor heat exchanger from the defrosting pipeline. The technical problems that when the air conditioner conducts heating and defrosting, the heating efficiency of the air conditioner is low, and the user experience is poor can be solved.