Ultra-low temperature refrigerator is also known as ultra-low temperature preservation box, ultra-low temperature freezer, ultra-low temperature preservation box, etc. ? According to the temperature range can be roughly divided into:? -60 degrees? and -86 degrees ultra-low temperature refrigerator? Can be applied to the preservation of tuna, electronic devices, special materials for low temperature testing and preservation of plasma, biological materials, vaccines, reagents, biological products, chemical reagents, strains, biological samples and other low temperature preservation. So, what is the price of ultra-low temperature refrigerator? Ultra-low temperature refrigerator working principle and how is it?
A, ultra-low temperature refrigerator price
Haier ultra-low temperature refrigerator price
Products: Haier Ultra-low temperature refrigerator DW-86L288
Haier Ultra-low temperature refrigerator specific performance:
1.Temperature control: computer control. Temperature in -40 ~ -86 ℃; adjust 1 ℃
2.? Safety system: fault alarm (high and low temperature, sensor, voltage, poor heat dissipation, ring temperature exceeds the standard); multiple protection functions (password, power-on delay, ultra-low/high voltage compensation)
3.? Refrigeration system: optimized compound stack refrigeration technology, the mouth of the compressor, cold capacity is stronger; ultra-thick high-density insulation layer, warmth effect is better
4.? Unique cell phone text message alarm: optional cell phone remote monitoring function, the user sends a text message to the device to query the real-time temperature and alarm situation.
Sanyo ultra-low-temperature refrigerator price
Sanyo ultra-low-temperature refrigerator has a number of product series: -150 ℃ medical cryogenic box (V.I.P. PLUS series), -86 ℃ medical cryogenic box (V.I.P. series), 86 ℃ ultra-low-temperature preservation box, -35 ℃ / -40 ℃ medical cryogenic box, blood Preservation box, etc.
Sanyo ultra-low temperature refrigerator specific performance:
1. Innovative control panel: LCD graphic display panel with pop-up menu function, easy to operate, intuitive, and can display detailed information on the status of medical cryogenic box. All-round sample protection measures.
2. Advanced design, structure and control can make the valuable samples safer: new insulation material, new status warning function, standard LN2 backup device system, can be used in any emergency.
3. Data logging function: the temperature inside the chamber can be recorded monthly or weekly, and the opening/closing of the door can also be recorded (more than 2 minutes).
Because of the high technical requirements of ultra-low-temperature refrigerator, belonging to the higher content of science and technology products, so the price is less than seven or eight thousand, the general have to tens of thousands of dollars a, are generally enterprises, governments, schools, scientific research institutions to purchase more.
Two, ultra-low-temperature refrigerator working principle
Ultra-low-temperature refrigerator is generally used in the secondary refrigeration.
The refrigerant of the first stage is R-12 (23.Ooz, 28.349?523g), and the design pressure is 400ppsi at high pressure (1ppsi=6.894?76X10'Pa), and 90ppsi at low pressure.
The condenser of the second stage of refrigeration and the evaporator of the first stage of refrigeration are placed together.
The second stage refrigerant is a mixture of R-503 (8.50z) and R-290 (0.70z), and is designed for high and low pressures of 300 ppsi. The temperature sensing probe is a thermistor, which displays different temperatures on the panel according to the magnitude of resistance (i.e., the temperature level).
The refrigeration process of ultra-low temperature refrigerator
When the power is turned on, when the panel display temperature is higher than the set temperature, the first stage compressor will start firstly, and the first stage refrigeration system will start to work, which will make the temperature of condenser of the second refrigeration system drop, i.e., the temperature of the second refrigerant will drop, and after several minutes of delay, the second stage After a few minutes delay, the second stage refrigeration system also began to work, its evaporator in the inner wall of the refrigerator, which can make the refrigerator internal temperature drop a lot, its condenser heat released by the first stage of the first refrigeration system all absorbed by the evaporator, the first stage of the first stage of the condenser heat released by the air dispersed.
When the internal temperature of the refrigerator reaches the set temperature, the temperature-sensitive probe resistance to the information out of the control relay is de-energized and disconnected, the two-stage refrigeration system all stop working. When the temperature inside the ultra-low temperature refrigerator rises again and exceeds the set temperature, the ultra-low temperature refrigerator repeats the above operation process again, so that the temperature inside the refrigerator is always maintained at about the set temperature.
The above is the price of ultra-low-temperature refrigerator and ultra-low-temperature refrigerator working principle, I hope to be able to help you. For more information about the ultra-low temperature refrigerator, please continue to pay attention to the Tuoba rabbit learning to decorate.