33results about How to "No frosting" patented technology

The invention discloses a mobile unpowered energy-saving food preservation box which comprises a box body, a gas cycle preservation system, a remote data monitoring and global positioning system and a solar power generation electric power storage system; the cooling capacity circulating, nano purification, enzymatic inactivation dormancy preservation technology is adopted, the energy-saving rate is high, the solar energy is used for generating and storing the power, so that the food preservation box has the function of remote movement, unpowered self-survival long-term preservation. The invention further discloses a preservation method of the mobile unpowered energy-saving food preservation box, the method can dynamically monitor, adjust and control the preservation parameter at real time according to the movement longitude and latitude of the food by pre-cooling treatment and cooling capacity nano purification preservation, the food is guaranteed at the best preservation state. The unpowered cold chain preservation of the perishable fresh food for long distance movement can be achieved through the preservation box and the preservation method and the commercial value is great.

The invention relates to a fresh air conditioning system and a control method thereof. The fresh air conditioning system comprises a first main air duct, a second main air duct, a first heat exchangerand a second heat exchanger; the first main air duct is provided with a first air inlet and a second air inlet; the second main air duct is provided with a third air inlet and a fourth air inlet; thefirst air inlet and the third air inlet communicate with outdoor space; the second air inlet and the fourth air inlet communicate with indoor space; the first heat exchanger is used for exchanging heat with the first main air duct; the second heat exchanger is used for exchanging heat with the second main air duct; in the heating mode, one of the first heat exchanger and the second heat exchangeracts as a condenser, the other one acts as an evaporator, the main air duct for exchanging heat with the condenser acts as a fresh air duct, and the main air duct for exchanging heat with the evaporator acts as a return air duct; and in the heating mode, indoor return air enters the outdoor space from the return air duct and exchanges heat with the evaporator during the process of flowing throughthe return air duct, and since the temperature of the indoor return air is higher than the temperature of the outdoor space, the evaporator is not frosted, and the continuous heating without defrosting is realized.

The invention discloses a heat exchange system for a multi-refrigerating circuit refrigerator and a refrigerator-disinfection cabinet all-in-one machine. The heat exchange system has the main characteristics that: an outlet end of a freezing chamber evaporator is connected with an inlet end of a refrigerating chamber evaporator through a freezing-refrigerating connection tube; the refrigerating chamber evaporator is placed in a anti-freezing fluid box; the outlet end of the freezing chamber evaporator is connected with a muffler through a freezing-return-air connection tube; a normally closed two-way valve is arranged on the freezing-return-air connection tube; the refrigerating chamber evaporator and the freezing chamber evaporator can be connected in parallel with two capillary tubes respectively; and a condenser is arranged at a position close to an inner liner of a disinfection cabinet. The heat exchange system can greatly reduce temperature difference change of a rear wall of an inner liner of a refrigerating chamber, can avoid frost formation in the refrigerating chamber evaporator, and can make the temperature in the refrigerating chamber more uniform, which are beneficial for keeping fruits and vegetables fresh; and the system can realize separate refrigeration of the refrigerating chamber, and can select the capillary tubes with greater flow to improve the energy efficiency ratio of a compressor.

The invention discloses a heat pump system using evaporative cooling. The system involves a compressor, an indoor heat exchanger, an outdoor heat exchanger, a first throttle, a second throttle, a solenoid valve, a three-way regulating valve, a water pump, a sprayer, an evaporator for concentration, a crystallization separator and a four-way reversing valve, wherein the heat pump system outdoor heat exchanger uses the evaporative cooling technique, an ethylene glycol solution is sprayed on the outer surface of the heat exchanger, the evaporator for concentration is not operated when the systemis operated in the summer, and during winter operation, a refrigerant is in heat exchange with the sprayed ethylene glycol solution and outdoor air in the outdoor heat exchanger, the evaporator for concentration is used for cooling the ethylene glycol solution below a freezing temperature and realizing the improvement of concentration of the ethylene glycol solution together with the crystallization separator, so that the ethylene glycol solution participating in the heat exchange of the outdoor heat exchanger is not frozen. According to the system, the heat exchange efficiency of an outdoor evaporator in winter is improved, and the frosting phenomenon does not occur when the outdoor evaporator is operated in winter.

The invention provides a face-to-face blowing type double-circulation air curtain unit, and belongs to the technical field of refrigeration houses. The face-to-face blowing type double-circulation aircurtain unit comprises a first case and a second case which are oppositely arranged. A first fan and a third fan are arranged on the first case. A first opening communicating with an inner cavity ofthe first case is formed in the first case. A second fan is arranged on the second case. A second opening and a third opening which communicate with an inner cavity of the second case are formed in the second case. The first fan is opposite to the second opening. The second fan is opposite to the first opening. The third fan is opposite to the third opening. According to the face-to-face blowing type double-circulation air curtain unit, double circulation of air flow can be achieved, cyclically-flowing air can better prevent cold air in a refrigeration house from flowing out and prevent hot air outside the refrigeration house from entering the refrigeration house, and a better blocking effect is achieved; and the face-to-face blowing type double-circulation air curtain unit has a better heat insulation effect and can save more energy.

The invention relates to a gas or liquid ultrasonic purification device which comprises a shell, fiber filter pipes, a hard net pipe, an internal support body and an ultrasonic vibration element, the shell is a shell with an input port, a purification output port and a pollution discharge output port, and the fiber filter pipes are arranged in the hard net pipe in a sleeved mode to form a composite filter pipe assembly. The inner support body is provided with an installation space, the composite filter pipe assembly is sleeved and stacked in the installation space in a penetrating mode, the inner support body is sleeved with the shell, and the ultrasonic vibration element is installed on the inner support body. High-frequency ultrasonic vibration energy generated by the ultrasonic vibration element is applied to the internal support body, is fed back to the hard net pipe and then acts on the fiber filter pipes, so that the fiber filter pipes generate high-frequency ultrasonic resonance and internal molecular motion, impurities in gas or liquid do not block capillary pores of the fiber filter pipes and are prevented from being blocked and passivated, the service life is prolonged, the quality and efficiency of filtration and purification are ensured, and the replacement frequency and loss of the fiber filter pipes are reduced.

The invention discloses a refrigerating system. The refrigerating system comprises a refrigerating system body and an electric control system. The refrigerating system body comprises a constant-speed compressor, electromagnetic valves, two or more cold storage cabinets and throttling devices. The electric control system comprises electromagnetic valves, relays and temperature controllers. The one-to-more refrigerating mode that the constant-speed compressor is used for independently controlling the cold storage cabinets with different refrigerant quantity demands is adopted, the refrigerant supply requirement of the cold storage cabinet with the small refrigerant quantity demand can be met under the condition that the cold storage cabinet with the small refrigerant quantity demand is opened only, and the situation that the body of the constant-speed compressor is frosted due to incomplete indoor evaporation, and consequentially the life of the constant-speed compressor is shortened is avoided; and meanwhile, the return air quantity required when the constant-speed compressor operates can be provided, so that the heat exchange effects of all evaporators are brought into full play, energy consumption is reduced, and the energy saving effect is achieved.

The invention discloses a manufacturing process of antibacterial plastic for a storage interlayer of a refrigerator. The antibacterial plastic is prepared from the following raw materials in parts by weight: 80-100 parts of polypropylene resin, 30-50 parts of ethylene propylene diene monomer rubber, 5-8 parts of a dispersing agent, 8-10 parts of an antibacterial agent, 12-15 parts of frost-proof reinforcing liquid, 15-20 parts of epoxidized soybean oil and 5-8 parts of kaolin powder. The antibacterial agent can cause reduction of permeability of cell membranes, leakage of bacterial cell sap, denaturation of bacterial protein and prevention of bacterial metabolism so as to kill bacteria, meanwhile, the antibacterial agent is high in relative molecular mass and not easy to separate out from the surface of the interlayer, and the frost-proof reinforcing liquid can prevent the surface of the interlayer from frosting after the interlayer is used for a long time, so that the frosting phenomenon cannot happen on the surface, meanwhile, the surface contains a large number of imide structures, so that the reinforcing filler contains a large number of ether bonds, the toughness of the antibacterial plastic is further improved, and stored objects are prevented from scratching the partition plate and influencing normal use of the partition plate in the use process of the refrigerator.

The invention belongs to a raw material for chemical production, provides a modified resorcinol formaldehyde resin free of pollution and spray frost and small in internal resistance and a production process thereof, and discloses a resorcinol aldehyde resin formed by the modification of olefin and aromatic hydrocarbon. The resorcinol aldehyde resin is prepared from the following components in parts by weight: 22 to 25 parts of resorcinol, 10 to 11.5 parts of aldehydes, 5 to 6.5 parts of olefines, 5 to 6.5 parts of aromatic hydrocarbons, 0.2 to 0.8 part of vitriol, wherein after all the components have an alkylation reaction and a hydroxylation reaction, the resorcinol aldehyde resin is prepared.

A corrosion-resistant and fire-resistant pipe system suitable for sprinkler systems and the like in the offshore industry and also on military and civilian seagoing vessels, and generally as sprinkler systems in official buildings and in industrial buildings. The pipe system is characterized in that the pipe system includes rigid and cold-formable pipe sections (10) that have one or more tubular rubber layers (11, 13, 15) and reinforcement layers (12, 14) that surround or embrace one or more of the tubular rubber layers (11, 13, 15). The reinforcement layers are comprised of wires or ribbons that have been wound, braided, knitted or formed in some other way so as to cross each other, wherein each of the wires or ribbons defines with the longitudinal axis of the pipe section a winding or spiraling angle that imparts the greatest possible strength to the reinforced, tubular rubber layers (11, 13, 15). In the present case, the system also includes branch connections (18) for connecting a pipe section (10) to another pipe section in a multi-path coupling.

The invention relates to a building internal waste heat utilization method. The building internal waste heat utilization method comprises the following steps that a first air heat exchanger is arranged in an air conditioner inner area, a second air heat exchanger is arranged in an air conditioner outer area, and a third air heat exchanger is arranged outdoors; the compressor communicates with the first air heat exchanger, the second air heat exchanger and the third air heat exchanger through a plurality of four-way reversing valves, and the conduction directions of all the four-way reversing valves are regulated and controlled to recycle heat in the inner area of the air conditioner, the invention further provides a central air conditioning system which comprises the first air heat exchanger, a second air-conditioning heat exchanger, the third air heat exchanger and four four-way reversing valves, and the four-way reversing valves communicate with the compressor, an expansion valve, the first air heat exchanger, the second air heat exchanger and the third air heat exchanger. According to the building internal waste heat utilization method and the central air conditioning system, the requirements for air conditioner inner area refrigeration and air conditioner outer area heating can be met at the same time, the heat is recovered from the air conditioner inner area for air conditioner outer area heating, energy heat recovery is achieved, and the interior of a building is the air conditioner inner area.

The invention provides a defrosting device for a dense heat exchanger. A bottom plate of the defrosting device is a circular plate provided with a circular through hole; an outer ring support plate islocated on the opposite side of the bottom plate, is in a ring shape, and has the same diameter as the bottom plate; a plurality of methanol injection pipes are fixed between the bottom plate and theouter ring support plates at equal intervals; an inner ring support plate is located inside the outer ring support plate, and a plurality of methanol absorption pipes are fixed between the bottom plate and the inner ring support plate; and first through holes which are evenly distributed are formed in the part, located between the outer ring support plate and the inner ring support plate, on thebottom plate. The defrosting device solves the problem that a defrosting device matched with the dense heat exchanger does not exist in the prior art, the defrosting device for the dense heat exchanger is provided, the volatility and mutual solubility of the methanol liquid are used for reducing the temperature and partial pressure of the water vapor in the air in the heat exchanger to enable theair to quickly pass through the heat exchanger without generating frost, and the risk of loss of heat exchange efficiency of a micro-channel heat exchanger due to frost formation is reduced.