156 results about "Excessive Cooling" patented technology

An apparatus for controlling the temperature of a part of a human or animal body 2 during a cryosurgical procedure is disclosed. The apparatus comprises a radiative energy transmitter 26 for radiating energy to a zone of the body 2 to be protected from excessive cooling. There is also provided a means 12 for controlling the energy radiated by said radiative energy transmitter 26. Preferably the radiative energy transmitter comprises an infra-red laser diode coupled to a diffuser 34 by an optical fibre 40.

The within invention improves on the indirect evaporative cooling method and apparatus by making use of a working fluid that is pre-cooled with and without desiccants before it is passed through a Wet Channel where evaporative fluid is on the walls to take heat and store it in the working fluid as increased latent heat. The heat transfer across the membrane between the Dry Channel and the Wet Channel may have dry, solid desiccant or liquid desiccant and may have perforations, pores or capillary pathways. The evaporative fluid may be water, fuel, or any substance that has the capacity to take heat as latent heat. The Wet Channel or excess cooled fluid is in heat transfer contact with a Product Channel where Product Fluid is cooled without adding any humidity. An alternative embodiment for heat transfer between adjacent channels is with heat pipes.

Post-angioplasty hyperplasia in blood vessels is treated using a cryosurgical balloon catheter. The balloon catheter is positioned at a target region within the blood vessel, and the balloon inflated by expanding a cryogenic fluid, such as liquid nitrogen, across an expansion orifice into a balloon. The balloon will be constructed so that cooling is achieved primarily in the central regions of the balloon, with the proximal and distal regions being less cold and acting to insulate adjacent regions of the blood vessel from excessive cooling.

In a thermal equalization system a machine tool carriage preferably of aluminum but which could be made of other lightweight materials, a drilling spindle housing is mounted on the carriage. At least one spindle housing is be mounted said carriage to service work pieces mounted on a tooling plate of the work table for said spindle. The chiller unit is used to provide coolant to the spindle to compensate for the heat generated by the spindle during drilling. When the spindle is not drilling, excessive cooling of the spindle can result. Accordingly, the instant invention also includes, a conductive rubber heating pad which is attached to the spindle structure to provide a heat source for the system to compensate for excessive cooling when the drill is not generating heat. The temperature control maintains the temperature between the spindle housing, carriage and work table thereby minimizing temperature expansion differentials between the drilling position and the worktable position.

A method of forming a glass melt including heating a glass feed material in a first melting furnace to form a glass melt, flowing the glass melt into a second melting furnace through a refractory metal connecting tube, and further heating the glass melt in the second melting furnace. The refractory metal connecting tube is heated to prevent the molten glass from excessive cooling, and to ensure that the glass melt entering the second melting furnace is equal to or greater than the temperature of the glass melt in the second melting furnace. An apparatus for performing the method is also disclosed.

The invention belongs to the technical field of aero-engines, and particularly relates to a cooling channel structure suitable for a two-dimensional invisible spray pipe. The cooling channel structurecomprises a round-to-square section, a convergence section and an expansion section which are sequentially connected, and a first cooling channel is formed between a first inner wall and a first outer wall of the round-to-square section; a second cooling channel is formed between a second inner wall and a second outer wall of the convergence section, the second cooling channel communicates with the first cooling channel, the second inner wall comprises a convergence section upper-layer heat shield and a convergence section lower-layer heat shield, a first through hole is formed in the convergence section upper-layer heat shield, and a second through hole is formed in the convergence section lower-layer heat shield; and a third cooling channel is formed between a third inner wall and a third outer wall of the expansion section, the third cooling channel communicates with the second cooling channel, and the third inner wall comprises an expansion section heat shield. According to the cooling channel structure, air flow of the cooling channel of the round-to-square section of the spray pipe can be reorganized and, the cold air amount between a side wall and an adjusting piece is reasonably distributed, and excessive cooling efficiency and insufficient cold air amount of the adjusting piece caused by inflow of a large amount of cold air are avoided.

Disclosed herein is a refrigerator that is capable of rapidly handling a load in a freezing chamber of the refrigerator or a refrigerating chamber of the refrigerator, and preventing stored goods in a rapid cooling chamber from being excessively cooled. The present invention also provides a method of controlling such a refrigerator. The refrigerator comprises a rapid cooling chamber mounted in at least one of the freezing and refrigerating chambers, a rapid cooling channel having one end communicating with an entering channel of the refrigerating chamber and the other end communicating with the rapid cooling channel, and a damper for controlling the flow of cool air passing through the entering channel of the refrigerating chamber and the rapid cooling channel. The damper is controlled on the basis of the load in the freezing or refrigerating chamber and a load in the rapid cooling chamber.

The invention relates to a method and a device for cooling and/or lubricating rollers, in particular the working rollers (2, 3) on a rolling stand and a rolled strip (1), rolled between the above rollers and transported onwards, using water in the form of spray jets (4, 5) as cooling medium and oil, oil/air mix, oil/water mix, oil/air/water mix or grease mixtures as lubricant. In order to improve the lubricating and cooling effects, a combined application of super-cooling the strip and roller surfaces and roller lubrication on the input side of the stand is disclosed, in which both media, water and lubricant, are separately fed to the rollers (2, 3) and the rolled strip and applied to the roller surface at different application points. Separate reservoirs for water and lubricant and separate lines to the spraying bar (11) for water and the spraying bar (12) for the lubricant are provided.

The present invention relates generally to metallic chips recycling, particularly, titanium alloys metal chips, and more particularly to said chips to form billets that can then be used for producing consumable electrodes for obtaining secondary casting alloys, in blacksmith's work for obtaining forgings, extruded semi-finished products and the like. After the chips are crushed and cleaned, the chips are pressed into cylindrically shaped briquettes with relative density of 0.6, and placed into capsules. The capsules are heated and placed into a pressing rig apparatus. The pressing rig repetitively applies axial force to the capsule, resulting in briquettes having relative density of at least 0.95. In a preferred embodiment, the pressing rig is pre-heated to a temperature of at least 0.2 of the heated capsule temperature to avoid excessive cooling of the capsule during the hot deformation operation. In a preferred, the deformation effort is applied all over the surface of one of butt-ends of the capsule, and from the opposite butt-end of the capsule-over the surface the diameter of which is less than size. The pressing rig apparatus comprises a basis, a container, a mould, a compression ram, a principal press-washer and an autonomous press-washer. In a preferred embodiment, the diameter of one or both of the press-washers are less than the capsule diameter by two thicknesses of the capsule cowling, and wherein the press-washers form one or more chambers with the mould to receive the shed cowling during the hot deformation process.

The invention belongs to the technical field of aluminum alloy production and manufacture, and relates to a production technology of 7-series aluminum alloy tubular products. Aluminum alloy ingot casting is prepared from the following components in percentage by mass: 4.0-7.0% of Zn, 0.6-1.5% of Mg, 0.1-0.5% of Cu, less than or equal to 0.1-0.5% of Cr, less than or equal to 0.15-0.25% of Zr, lessthan or equal to 0.1% of Ti, less than or equal to 0.05% of single impurity, less than or equal to 0.15% of total impurities and the balance of Al. Sulfate and graphite are adopted to be added into molten aluminum liquid according to the mass fraction ratio of 1 to 9-3 to7 in the process of aluminum liquid refining, magnesium oxide and aluminum oxide in the aluminum liquid are removed, the deoxygenation temperature is 720+/-5 DEG C, therefore, the air cooling speed of aluminum alloy profiles after extruded forming is 100 DEG C/min, and the problems that in the prior art, the production technology of 7-series aluminum alloy with no Mn element added has excessive cooling speed and is not easy to control are solved.

A refrigerator is provided to prevent excessive cooling and freezing of a peripheral region of an evaporator in a refrigerator compartment by discharging cold air through a lower region of the refrigerator compartment. A refrigerator includes a refrigerator compartment duct(45), and a ventilation duct(60). The refrigerator compartment duct forms a cold air path between an evaporator(41) and the refrigerator compartment, and has a discharge port formed at the upper side of the evaporator. The ventilation duct is disposed to make the refrigerator compartment duct in communication with a lower region of the refrigerator compartment to flow the cold air therethrough. An evaporator of a freezer compartment is serially connected to the evaporator of the refrigerator compartment. When a refrigerator compartment fan is OFF and a freezer compartment fan is ON, the cold air generated from the evaporator of the refrigerator compartment is discharged to the refrigerator compartment through the ventilation duct.

The invention discloses a cooling/warming air conditioner which comprises a compressor, a reversing assembly, an outdoor heat exchanger, an indoor heat exchanger, a throttling element, a first refrigerant flowing channel and a second refrigerant flowing channel which are connected in parallel, an electric control radiator assembly, a first one-way valve and a second one-way valve. The compressor, the reversing assembly, the throttling element and the indoor heat exchanger are connected to form a closed loop system. The first refrigerant flowing channel and the second refrigerant flowing channel are connected between the outdoor heat exchanger and the throttling element in series respectively. The electric control heat radiator assembly comprises an electric control element and a radiating assembly connected onto the first refrigerant flowing channel in series. The first one-way valve is connected onto the first refrigerant flowing channel in series to be opened in one way during refrigeration, and the second one-way valve is connected onto the second refrigerant flowing channel in series to be opened during heating. A refrigerant can be utilized to dissipate heat of the electric control radiator assembly to further improve the working performance of the electric control element. Excessive cooling of the electric control element is avoided, and condensate water is prevented from being produced on the electric control radiator assembly.

The invention discloses an intelligent cooling system for a traction converter of an electric multiple unit. The intelligent cooling system comprises a primary heat sink and a secondary cooling device, wherein the primary heat sink is used for installing a heat source part contained in the traction converter, the secondary cooling device is arranged in equipment compartment, heat generated by the heat source part is taken away by a cooling liquid flowing out of the primary heat sink, the secondary cooling device comprises a secondary heat sink and a pump, the secondary heat sink communicates with the primary heat sink through a cooling liquid circulation pipeline, the cooling liquid circulation pipeline comprises a liquid inlet pipeline and a liquid outlet pipeline, the pump is arranged on the liquid outlet pipeline, the cooling liquid flowing out of the primary heat sink passes through the liquid outlet pipeline and the pump and enters the secondary heat sink, the secondary heat sink is used for transferring the heat to cooling air from the cooling liquid, and the cooling liquid passes through the liquid inlet pipeline and returns to the primary heat sink after the heat is released. By the intelligent cooling system, the rotational speed of a draught fan and the flow quantity of the cooling air can be dynamically regulated according to a running environment and a working condition of the electric multiple unit so as to further control cooling intensity, and excessive cooling is prevented.

A compressor and an air-conditioner having the same are disclosed. A compressor application voltage is detected, and the air-conditioner is operated in a pre-set operation mode according to the detection result, or the air-conditioner is operated in a pre-set operation mode in a certain time domain, thus continuously operate the compressor. Or, a compressor temperature or an ambient temperature is detected to operate the air-conditioner in a pre-set operation mode or operate the air-conditioner in a pre-set operation mode within a certain time domain, thus continuously operate the compressor. Accordingly, the compressor can be operated in a particular operation mode within a certain time slot regardless of an ambient temperature, whereby an excessive cooling operation cannot be performed at night to thus provide an agreeable cooling operation and reduce noise. The compressor is prevented from being stopped due to a low voltage, and because power of the compressor is not repeatedly turned on or off, power is consumption can be reduced and reliability can be improved.

A cutting machine includes a motor assembly, a cutting blade powered by the motor assembly for cutting a work piece, and a cooling arrangement which includes a fluid nozzle unit for delivering cooling fluid onto a cutting edge portion of the cutting blade to ensure the cooling fluid to adhere on the cutting blade by means of adhesion and cohesion of the cooling fluid so as to cool the cutting blade during the cutting operation and to combine the cooling fluid with residual particles of the work piece after the work piece is cut. Therefore, no excessive cooling fluid is stayed on the cutting blade to minimize the formation of dust, and misting of the cooling fluid during the cutting operation.

Lowering of process quality of a sample is prevented even when a rotor is slowly decelerated taking a long time upon finishing a centrifugal process. A centrifuge having a steady operation mode of rotating a rotor at an inputted steady rotation speed and a deceleration stop mode of stopping the rotor by deceleration. When a remaining time of the steady operation mode is within a stop preparation time, a target controlled temperature of the rotor chamber is set from a first target controlled temperature to a second target controlled temperature that is higher than the first target controlled temperature. By setting the target controlled temperature of the rotor chamber high before switching to the deceleration stop mode, temperature of the rotor chamber is controlled to be close to a set temperature of the rotor and thus excessive cooling of a sample loaded to the rotor can be prevented.

The invention discloses a head-wearing automatic cooling device and a cooling method. The method comprises following steps: utilizing water-proof silent fans to control liquid volatilization in a cooling paste for fast cooling; utilizing head temperature sensors and an ear temperature sensor to measure and monitor head temperature and ear temperature at every moment and meanwhile sending signals of head temperature and ear temperature to a central processing unit; and determining whether body temperature is higher than date value for normal body temperature or not when the central processing unit receives signals of head temperature and ear temperature and obtains data of body temperature so as to further control the water-proof silent fans to start and stop. The head-wearing automatic cooling device and the cooling method have following beneficial effects: rapid cooling is achieved while body temperature can be monitored in a real-time manner and automatic cooling control is realized so that cooling degree is effectively controlled, excessive cooling is avoided and cooling speed is controllable; a patient's condition is conveniently mastered; and the head-wearing automatic cooling device is low in cost and long in acting time without too much manual intervention and is safe and convenient and is comfortable to wear without noise.