7results about How to "Prevent ice blockage" patented technology

The utility model relates to a northern heating drainage chassis anti-freezing structure which comprises an air conditioning system and a drainage chassis, the air conditioning system comprises a compressor, a condenser, an expansion valve and an evaporator, the drainage chassis is arranged at the bottom of the condenser, a drainage opening is formed in the drainage chassis, and the drainage chassis is used for draining condensate water generated in the defrosting process. A refrigerant pipeline between the expansion valve and the evaporator penetrates through the drainage base plate, when the air conditioning system conducts heating, a refrigerant forms medium-temperature and medium-pressure liquid after passing through the expansion valve, and the medium-temperature and medium-pressure liquid passes through the drainage base plate so that the temperature of the drainage base plate can be increased. When the air conditioning system heats, the medium-temperature medium-pressure liquid refrigerant passing through the expansion valve flows through the drainage chassis, so that the temperature of the drainage chassis is increased. Therefore, the condensed water on the base plate cannot be frozen due to low temperature, so that the condensed water can be smoothly discharged.

The application relates to the technical field of refrigeration equipment, and provides a refrigerator, which comprises a refrigeration chamber, a drain pipe and a heating piece, the refrigeration chamber is provided with a water outlet; the drain pipe comprises a first pipe section and a second pipe section which are connected in sequence, the first pipe section is connected with the water outlet, and the second pipe section is located on the side of the first pipe section away from the water outlet; the heating piece comprises a first heating wire and a second heating wire, the first heating wire is arranged in the first pipe section, the second heating wire is arranged in the second pipe section, and the laying density of the first heating wire is smaller than that of the second heating wire. Since the first pipe section is close to the refrigeration chamber, the temperature is higher than that of the second pipe section, and the icing risk is lower; by aiming at the icing risks of different regions of the drain pipe, the laying density of the first heating wire is smaller than that of the second heating wire, the drain pipe is prevented from being blocked by ice, excessive heating of the low-risk region is avoided, and the overall energy consumption of the refrigerator is reduced.

The application belongs to the technical field of ice particle jet, and particularly relates to a device and a jet method for preparing straight-rotation mixed ice particle jet by using high-pressure superheated liquid flash evaporation, which comprises a high-pressure superheated liquid supply system and a water supply system, the high-pressure superheated liquid supply system and the water supply system are respectively connected with a straight-rotation mixed ice particle generation jet, the straight-rotation mixed ice particle generation jet system is connected with a recovery system, the recovery system is connected with the high-pressure superheated liquid supply system through a pipeline, the straight-rotation mixed ice particle generation jet system comprises a double-layer sleeve, the inner layer of the double-layer sleeve is connected with the water supply system, the outer layer is connected with the high-pressure superheated liquid supply system, an impeller is arranged at the outlet of the double-layer sleeve, a convergent atomizing nozzle is arranged at the outlet of the impeller, a protective shell is arranged outside the convergent atomizing nozzle, the convergent atomizing nozzle and the impeller center line are coincided with the inner layer, and the superheated liquid flash evaporation in the application has high refrigeration power and high speed, and can complete ice particle preparation in a short time.

This utility model discloses an integrated CO2 heat pump system for fresh air supply, comprising a housing with a fresh air inlet and a fresh air outlet; a primary and secondary efficiency filter, a first heat exchanger, and a second heat exchanger are sequentially installed inside the housing along the fresh air flow direction; the heat pump system using carbon dioxide as refrigerant includes a compressor, a four-way valve, an expansion valve, and a closed refrigerant circuit, the circuit being connected through the four-way valve port so that the compressor exhaust passes sequentially through the first heat exchanger, the expansion valve, and the second heat exchanger before returning to the compressor; a variable frequency fan is installed between the second heat exchanger and the fresh air outlet; temperature and humidity sensors are respectively installed on the outdoor and indoor sides; the controller connects the sensors, the four-way valve, the compressor, and the fan, and has the advantages of dynamically switching between cooling / heating / dehumidification modes and adjusting the fan speed according to environmental parameters.

The invention relates to a heat preservation structure for reducing piston wind in a tunnel in a cold region. The heat preservation structure comprises an unpowered ventilation system, a heating system, a drainage system and a temperature control system. The unpowered ventilation system comprises a plurality of ventilation pipes which are obliquely crossed with the tunnel ballast bed; one end of the ventilation pipe penetrates through the heating system, and the other end penetrates through the tunnel ballast bed; the heating systems are arranged at equal intervals in the longitudinal direction of the tunnel and comprise rectangular concrete cavities arranged under a tunnel ballast bed, heat preservation plates laid on the inner surfaces of the rectangular concrete cavities and electric heating wires fixed to the inner surfaces of the heat preservation plates. The drainage system comprises transverse water-permeable blind pipes, longitudinal water-permeable blind pipes and a central ditch; one end of the transverse water-permeable blind pipe is connected with a longitudinal water-permeable blind pipe of a tunnel wall foot, the other end of the transverse water-permeable blind pipe is connected with a central ditch, and the transverse water-permeable blind pipe is longitudinally arranged along the tunnel; the central ditch penetrates through the heating system along the longitudinal direction of the tunnel; the temperature control system comprises a power distribution control box and a temperature sensor. The aim of cold protection and heat preservation of the tunnel in the cold region can be achieved.

The application relates to a marine BOG gas incineration device and a control method thereof. The incineration device comprises a natural gas pipeline system, an auxiliary fuel gas pipeline system, an air supply pipeline system and a GCU incineration device; the natural gas pipeline system comprises a natural gas main pipeline and an ignition branch pipeline, a first combustion branch pipeline and a second combustion branch pipeline, and a diffusion branch pipeline is arranged on the natural gas main pipeline; the auxiliary fuel gas pipeline system comprises an auxiliary fuel gas pipeline, and the auxiliary fuel gas pipeline is connected with the ignition branch pipeline, the first combustion branch pipeline and the second combustion branch pipeline in series; the air supply pipeline system comprises an air supply fan and an air supply pipeline; the GCU incineration device comprises a wind distribution chamber, a treatment chamber, a combustion chamber and a burner, the treatment chamber is communicated with the wind distribution chamber, the combustion chamber is communicated with the treatment chamber, the burner is arranged in the combustion chamber, and the air supply pipeline is communicated with the wind distribution chamber. The application solves the problem that the prior art cannot incinerate three kinds of BOG gas, i.e. low-temperature and low-pressure gas on an LNG ship, high-pressure and normal-temperature gas and low-concentration mixed gas.

This utility model discloses an electric defrosting air cooler with de-icing function, relating to the field of electric defrosting air coolers. The utility model includes a main body of the air cooler, a fan mounting ring, a fin assembly, and a heating element disposed within the main body. A refrigerant tube, made of stainless steel, is inserted into the fin assembly with a hole spacing of 38.1 mm and a row spacing of 33 mm. The liquid inlet end of the refrigerant tube is connected to a capillary distributor, and the liquid outlet end is connected to a return gas pipe. This utility model optimizes the uniformity of refrigerant distribution through a multi-path arrangement of four inlets / four outlets and three inlets / three outlets. With four inlets / four outlets, the total pipe length of 58.8 m covers a larger heat dissipation area, increasing the cooling capacity to 7 kW, suitable for high-load scenarios. With three inlets / three outlets, the pipe length is shortened to 44.1 m, reducing flow resistance and adapting the cooling capacity to small and medium-sized needs. The precise diversion by the capillary distributor solves the problem of uneven refrigerant distribution caused by traditional single-path liquid inlet, avoiding localized frost formation or incomplete evaporation, and improving overall heat exchange efficiency.