3results about How to "Large temperature control range" patented technology

This utility model discloses a multifunctional integrated low-frequency radio frequency rack verification environment platform, belonging to the field of radio frequency testing technology. It includes a platform body with a detection cavity. A cavity door with a handle slides through the opening of the detection cavity. An radio frequency signal generator is mounted on the side of the platform body, and an radio frequency receiver is mounted on the side wall of the detection cavity. The transmitter of the radio frequency signal generator is located inside the detection cavity. A heater is mounted on the top of the detection cavity. The platform body has an internal cavity containing an insulated box for storing liquid nitrogen. A U-shaped tube is installed inside the insulated box. Several air vents connect the detection cavity and the internal cavity. A gas shroud covers the air vents on the top of the cavity. A gas supply component is embedded on the outside of the platform body. This technical solution solves the technical problem of radio frequency testing in a wide-temperature environment by expanding the temperature control range, providing a testing environment for the reliability assessment of radio frequency equipment.

The utility model relates to a temperature control system for printing nozzle, including semiconductor refrigeration piece, with the semiconductor refrigeration piece one end of the heat dissipation spare, with the semiconductor refrigeration piece other end of the printing head temperature control block, with the semiconductor refrigeration piece electricity connection's temperature control unit and the cooling liquid circulating assembly of external and with the heat dissipation spare connection, the cooling liquid circulating assembly includes the cooling liquid tank, pump body and radiator that connect gradually, and the cooling liquid in the cooling liquid tank is transported to the radiator heat dissipation after the pump body and supplies to the cooling liquid flow channel, then again backflow to the cooling liquid tank. The utility model discloses a cooling liquid circulation system is formed through the heat dissipation spare and external cooling liquid circulating assembly, and the cooling effect of semiconductor refrigeration piece is improved to the heat dissipation spare cooling, reaches the purpose of faster cooling and lower temperature, makes printing nozzle can fast switching temperature and temperature control range is wider, to satisfy the demand of complex biological material printing and organ chip manufacturing, simple structure.

The invention discloses an ultra-high-speed projectile impact test device, and the device comprises an impact target plate which is a test object of ultra-high-speed projectile impact; the shell is used for mounting the impact target plate; and the cooling piece is mounted on the shell and is used for cooling the impact target plate. Through the arrangement of the cooling piece, the cooling piece can cool the impact target plate, the impact target plate can be subjected to an ultra-high-speed impact test in a low-temperature state, and the vacancy that low-temperature protection performance data of a protection material and a structure cannot be obtained in the prior art is filled. In addition, a temperature rising piece can be arranged on the impact target plate, and the low-temperature protection performance data of the protection material and the structure under different temperature conditions can be simulated through cooperative use of the cooling piece and the temperature rising piece, so that not only can the low-temperature protection performance data of the protection material and the structure be obtained, but also the high-temperature protection performance data of the protection material and the structure can be obtained.