6results about How to "Large temperature control range" patented technology

The utility model relates to the technical field of refrigeration equipment, and provides a multi-point air supply type air duct assembly which comprises a cold source shell, a heat exchanger and a heat exchanger. A refrigeration chamber and a cold supply chamber are respectively formed on two sides of the partition plate; a communicating hole is formed in the partition plate; the evaporator is arranged in the refrigeration chamber; the centrifugal fan is arranged in the cold supply cavity; the wind arm pipes are uniformly and annularly arranged on the periphery of the cold source shell; an air supply duct and an air return duct which are mutually separated are arranged in the air arm pipe; the air supply duct communicates with the cold supply cavity, and the air return duct communicates with the refrigeration cavity. Therefore, the air arm pipes are evenly and annularly arranged on the periphery of the cold source shell, the distances between the air supply outlets and the cold source and the distances between the air return inlets and the cold source are equal, and the airflow speed and the temperature of the air supply outlets are balanced. The utility model further provides a phase change refrigeration system, refrigeration is achieved in a liquefied gas phase change mode, compression refrigeration is replaced, and the structural composition of the refrigeration system is reduced. The utility model further provides refrigeration equipment.

The embodiment of the invention relates to a heating device of a hookah inhalation appliance. The heating device comprises a shell, a bottom plate, a partition plate and an electric heating body. The bottom plate and the partition plate are both arranged in the shell, the bottom plate is arranged at the bottom of the shell, the partition plate is arranged above the bottom plate, and the bottom plate, the partition plate and the shell side wall between the bottom plate and the partition plate jointly define a gas partition cavity; an airflow outlet is formed in the bottom plate, an airflow inlet is formed in the partition plate, and the airflow inlet and the airflow outlet are integrally staggered; the electric heating body and the partition plate are arranged above the partition plate in a separated mode. According to the heating device provided by the embodiment of the invention, the gas separation cavity is arranged, so that the electric heating body is far away from the bottom plate, even if the temperature of the electric heating body is higher, the smoke paste cannot be burnt, the charcoal fire heating effect is realized, and the temperature control range of the electric heating body can be enlarged. And meanwhile, the gas separation cavity also has the effects of cooling, keeping constant temperature and stabilizing gas flow, so that the gas flow is smooth and stable.

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 discloses a rotary lifting reation kettle, including kettle body, kettle cover, support and mounting bracket, the mounting bracket utilizes the pivot and is connected with the support, the kettle body is fixed on the mounting bracket and can rotate with the pivot, be provided with the carriage that can along the support stand column lift on the support, the kettle cover is connected with the carriage and can lift with the carriage, be provided with the stirring device that can extend into the kettle body on the kettle cover, still include the lifting drive mechanism for driving the carriage to lift and the rotating mechanism for driving the mounting bracket to rotate, still include the interlock mechanism on the lifting drive mechanism and the rotating drive mechanism, the interlock mechanism makes when the carriage ascends to the in -place, the kettle body can not rotate, and when the kettle body is not reset, the kettle cover can not descend. The utility model discloses through the interlock mechanism through the interlock lever and pivot lock eye cooperation, forcibly stipulate the operation order of lift cover-rotation-reset-lower cover, avoid because of the misoperation and lead to the kettle body rotation and the kettle cover lift conflict, prevent the collision.

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.