30results about How to "Effective convection" patented technology

The invention relates to a variable-air-volume intelligent airflow regulating and controlling system of a data machine room. The system comprises a mobile phone with an alarming notification function, a remote monitor computer, an intelligent central controller, an A concentrator, a B concentrator, a plurality of precise air conditioners, a plurality of machine cabinets, a plurality of variable-air-volume airflow induction units and variable-air-volume intelligent blower, wherein a plurality of the precise air conditioners are electrically connected with the B concentrator; the mobile phone with the alarming notification function and the remote monitor computer are connected with the intelligent central controller through communication network; a plurality of the precise air conditioners and a plurality of the machine cabinets are distributed in a data center machine room through a cold channel and a hot channel; the air inlet of the machine cabinet is provided with a variable-air-volume intelligent blower; or the radiation back board of the machine is provided with a variable-air-volume airflow induction unit; the variable-air-volume intelligent blowers and the variable-air-volume airflow induction units are connected with the A concentrator through signal lines; and the A concentrator and the B concentrator are electrically connected with the intelligent central controller. According to the invention, the data machine room reduces the temperature of equipment such as computers and the like; and temperature reducing effect is remarkable so as to achieve effect satisfied by users.

The invention relates to a preparation method for a solid-phase micro-extraction fiber bundle, and relates to preparation of the fiber bundle. The preparation method comprises the steps of (1) preparation of single SPME (solid-phase micro-extraction) fibers based on an integral material: mixing a monomer, a crosslinking agent, a pore-forming agent and an initiator to prepare a uniform solution, then injecting the uniform solution into a capillary which is 5-20cm long and of which the inner diameter is 0.2-0.8mm and the wall thickness is 0.05-0.2mm, sealing two ends of the capillary, performing polymerization, removing a section, which is 1-3cm long, of the capillary, putting the integral material fiber into a soxhlet extractor, performing extraction through a solvent, or putting the fiber into the solvent, and soaking the fiber until no impurity is detected from the liquid so as to obtain the single SPME fibers based on the integral material; (2) preparation of the solid-phase micro-extraction fiber bundle: combining 2-6 of the single SPME fibers based on the integral material on the capillary to obtain the solid-phase micro-extraction fiber bundle. The preparation method is simple, high in extraction capacity, high in extraction speed, low in cost and easy to operate.

The invention discloses a high-efficiency compound radiator, comprising an upper header and a lower header; the upper header and the lower header are connected by means of a heat-dissipating core tube; a heat-dissipating main body tube sleeves the heat-dissipating core tube; an upper cover is arranged on the upper header; a lower cover open in a lower end thereof is arranged outside the heat-dissipating main body tube; a lower end portion of the upper cover is connected with an upper end portion of the lower cover in such a manner that hermetical connection is formed at a connection part thereof; a heat source inlet at one end of the upper header is connected with a heat water inlet, and a vent valve is arranged at the other end of the upper header; a water return port formed in a part, on one side of the vent valve, of the lower header is connected with a water return pipeline; the heat-dissipating core tube is an elliptical core tube of which the section perpendicular to an axial direction is elliptical, and the heat-dissipating main body tube is an elliptical heat-dissipating tube matched with the elliptical heat-dissipating core tube. The high-efficiency compound radiator is beautiful in shape, and convenient to mount, demount and repair; due to the combination of the matching elliptical core tube and elliptical heat-dissipating tube, the heat cycle efficiency is high, the heat utilization rate is increased, and the purpose of quick and balanced heat dissipation is achieved.

The invention provides a light motor which comprises a stator, wherein a silicon steel sheet group of the stator is provided with a center hole for sleeving an inner bushing, and the inner bushing is provided with a shaft hole for coupling a motor shaft, thereby lowering the material cost and reducing the weight. A rotor is sleeved on the stator and is annularly provided with a plurality of magnets, and a left cover and a right cover are respectively positioned at two sides of the stator and rotor. Thus, after the current flows through a coil group of the stator, the electromagnetic force can be generated to drive the rotor to rotate; and because a left inner cavity is formed at the left side of the inner bushing, a right inner cavity is formed at the right side of the inner bushing and the left inner cavity and the right inner cavity are mutually communicated, the heat can be dissipated effectively, thereby prolonging the service life of the motor.

An LED surface light source spotlight easy to cool, comprising an aluminum substrate. Several LED light beads are distributed on the aluminum substrate, and a mounting frame is connected to the aluminum substrate by means of a connecting member; the mounting frame consists of a mounting plate and at least two connecting plates arranged on the mounting plate at intervals in the length direction, and the connecting plates are hingedly connected to the connecting member. The spotlight has a compact structure and a good cooling effect, and can be for outdoor illumination and advertisement illumination.