39results about How to "Reduce supercooling" patented technology

The invention discloses pipe powder for nodular cast iron. The formula of the pipe powder comprises the following components in percentage by weight: 62-70% of Si, 3-10% of Ba, 1-2% of Ca, 0.8-1.8% of Al, 0.5-1.5% of Fe3O4, the balance of Fe and inevitable microelements. According to the pipe powder for the nodular cast iron disclosed by the invention, the overall performance of the nodular cast iron can be improved, and the inoculation efficiency is improved.

A fluid sample vessel includes inlet and vent tube fittings formed at one end of a container with an opposite open end closed by a needle septum. A support cap is removably engaged to the container to support the container and protect terminal ends of inlet and vent tubular branches coupled to the fittings. The support cap includes a pair of opposite legs with outwardly directed tabs for mounting within a centrifuge while supporting the cryopreservation container.

The invention discloses a supercooling maintenance device for pulse thermoelectric refrigeration capable of heat recovery, which includes a thermoelectric refrigeration mechanism, a rotating mechanism, a thermoelectric power generation mechanism and an installation shell. It is installed on the rotating mechanism, and the cold medium conduction block is installed on the side of the installation shell. When the thermoelectric refrigeration unit rotates to communicate with the external pulse current on the cold medium conduction block, there will be transient supercooling on the basis of normal refrigeration, and then the thermoelectric The refrigeration unit will be accompanied by retaliatory thermal feedback, and the rotating mechanism will move the thermoelectric refrigeration unit that has retaliatory thermal feedback to the heat conduction medium block to connect with the electric power generation mechanism, and at the same time, the next group of thermoelectric refrigeration units will follow the external pulse on the cold medium conduction block The current connection continues the transient supercooling based on the normal cooling of the thermoelectric refrigeration unit, and such a cycle realizes the enhancement of the refrigeration capacity of the thermoelectric refrigeration, continuous high-efficiency refrigeration and the recovery and utilization of the heat generated by the thermoelectric refrigeration.

The compressor includes the compressor main body compressing suction gas sucked from a suction flow passage, and a discharge flow passage supplying the gas discharged from a discharge port of the compressor main body to a gas supply destination side. The discharge flow passage has a temperature detector detecting a discharged gas temperature, a heat exchanger cooling the discharged gas, and a cooling fan flowing the cooling air against the heat exchanger. A computing unit is provided to control the revolution number of the cooling fan so that the discharged gas becomes a predetermined temperature defined in advance. By the constitution, cooling is properly performed depending on the calorie of the gas discharged from the compressor main body, so as to reduce the required motive power used for the cooling.

The invention discloses pipe die powder for centrifugally casting a nodular cast iron pipe and a preparation process thereof. The pipe die powder comprises the following components in percent by mass: 60-65 percent of Si, 1.5-2.0 percent of Ca, 2.0-3.0 percent of Ba, 1.4-1.6 percent of Mn, 1.0-1.5 percent of Mg, 1.0-2.0 percent of Zr, 0.7-1.5 percent of Al and the balance of Fe; and the granularities of pipe die powder comprise less than 1.5 percent of 80 mu, 25-30 percent of 100-120 mu, 40-50 percent of 140-180 mu, 25-30 percent of 200-300 mu and less than 2.5 percent of more than 300 mu. The preparation process comprises the following steps of: preparing, melting, pouring, cooling, crushing, milling, proportioning granularities and packaging in vacuum. The pipe die powder has the advantages of uniform components, consistent melting points and reasonable granulometric class, and is beneficial to the prolonging of the service life of a pipe die of the nodular cast iron pipe, the reduction of a series of casting defects of cockles, poor nodulizing, surface cracks and the like of the nodular cast iron pipe, the improvement of the quality of the nodular cast iron pipe and the yield, and the lowering of the production cost.

The invention discloses a comfort control method of an air conditioner. The method comprises the following steps of: acquiring a face temperature of a human body through an infrared sensor and determining the temperature interval range of the face temperature; and correspondingly performing refrigerating or heating comfort control when the face temperature meets the predetermined temperature interval range and the wind direction and the wind shift of the air conditioner meet the predetermined condition. The invention also discloses the air conditioner. According to the invention, comfort control of temperature and wind speed can be performed according to the face temperature of the human body detected by the infrared sensor, so that the user experience is improved.

The invention discloses a preparation method of a nucleating agent for nodular cast iron. The method comprises the step that 66%-72% of Si, 3%-10% of Ba, 1%-2% of Ca, 0.8%-1.8% of Al, 1.5%-2% of Ce, 0-1% of S and the balance Fe and inevitable micro elements are mixed, smelted, stirred, cooled and smashed; and then a mixture is mixed with Fe3O4 power to be pressed into a block to be smashed again. The invention further discloses application of the nucleating agent for nodular cast iron. By the adoption of the nucleating agent for the nodular cast iron, the comprehensive performance of the nodular cast iron can be improved, and the nucleating efficiency is improved.