46results about How to "Lower temperature value" patented technology

An elastic wave device includes a supporting substrate, a high-acoustic-velocity film stacked on the supporting substrate and in which an acoustic velocity of a bulk wave propagating therein is higher than an acoustic velocity of an elastic wave propagating in a piezoelectric film, a low-acoustic-velocity film stacked on the high-acoustic-velocity film and in which an acoustic velocity of a bulk wave propagating therein is lower than an acoustic velocity of a bulk wave propagating in the piezoelectric film, the piezoelectric film is stacked on the low-acoustic-velocity film, and an IDT electrode stacked on a surface of the piezoelectric film.

The embodiment of the invention discloses a method for adjusting the terminal temperature, wherein the method comprises the following steps that a difference value between the preset temperature value and the temperature value of a terminal is determined; if the difference value is not in a preset threshold range, and the temperature value is grater than the preset temperature value, the work load of the terminal is reduced; if the temperature value is not in the preset threshold range, and the temperature value is smaller than the preset temperature value, the work load of the terminal is increased. When the embodiment of the invention is implemented, the work load of the terminal can be adjusted according to the preset temperature value and the preset threshold range, so that the temperature of the terminal is maintained in a certain temperature range, and the use experience of users is improved.

A solar energy converter comprising: a solar energy absorber, the solar energy absorber comprising a photovoltaic element; a heat transfer element in thermal contact with the solar energy absorber; a primary heat exchanger in thermal contact with the heat transfer element; a secondary heat exchanger; and a heat transfer control element; wherein the heat transfer control element is arranged to selectively place the secondary heat exchanger either in thermal contact with the heat transfer element or out of thermal contact with the heat transfer element.

The invention discloses a control method and device for an air conditioner. The control method comprises the following steps: step 1, acquiring the temperature value in a room with the air conditioner; step 2, comparing the temperature value with a preset temperature interval to obtain a comparison result, and determining a gear according to the comparison result; and step 3, controlling the cold energy of the air conditioner by the gear determined in the step 2, wherein the control device comprises a temperature acquiring module, a gear judgment module and a cold energy control module which are connected successively. Different gears can be selected according to actual demands of a user and the usable area, the outlet air of the air conditioner cannot be too low or too high, and therefore, comfort of the user who uses the air conditioner is improved. In addition, the technical effect of efficiently saving energy is achieved. The control method and device for the air conditioner can meet various demands of the user; rapid refrigeration can be realized; the air conditioner can run in an energy-saving manner; and moreover, the capability is increased along with increasing of horsepower of the air conditioner. After the control method and device for the air conditioner are used, the energy-saving effect of the air conditioner is obvious.

A vibrating device that is in the form of a rectangular plate having opposed long sides and opposed short sides, and that utilizes an expanding and contracting vibration mode in a direction of the short sides. The vibrating device includes a Si layer made of a degenerate semiconductor, a silicon oxide layer, a piezoelectric layer, and first and second electrodes through which a voltage is applied to the piezoelectric layer. When a total thickness of the Si layer is denoted by T1, a total thickness of the silicon oxide layer is denoted by T2, and the TCF in the vibrating device when the silicon oxide layer 3 is not provided is denoted by x(ppm/K), T2/(T1+T2) is within a range of (−0.0003x²−0.0256x+0.0008)±0.05.

The invention discloses a laminated core type single-collar two-coil redundant axial direction magnetic bearing. According to the structure of the laminated core type single-collar two-coil redundant axial direction magnetic bearing, multiple sets of U-shaped silicon steel sheet laminated components (1) are inlaid in the circumferential direction of a laminated base (2) in the axial direction and fixed through hexagon socket set screws (6) with flat points; and two sets of coils (3) with the same number of turns are connected in parallel in the axial direction and wound on a circular ring composed of the twelve U-shaped silicon steel sheet laminated components. Compared with existing design, the problem that a silicon steel sheet lamination way cannot be adopted for the integral axial direction magnetic bearing is solved, so that the eddy-current loss of the axial direction magnetic bearing is reduced, and the temperature rise of the axial direction magnetic bearing is reduced. Due to the redundant design of the two sets of coils, the axial direction magnetic bearing has analytical redundancy, and working reliability of the axial direction magnetic bearing is improved.

The invention belongs to the technical field of air inlet mechanisms, and particularly relates to an air inlet mechanism used for a piston compressor. By aiming at the problem of a small air inlet quantity, the invention now puts forward the following scheme that the air inlet mechanism comprises an air inlet box, wherein the outer wall of the top of the air inlet box is connected with an air guiding pipe through a flange; the outer wall of one side of the air inlet box is provided with air inlets which are distributed at equal distances; the air inlet box is of a structure of which two ends are small and the middle is big; the diameter of each air inlet is 3-6 mm; and the air inlets are positioned in the middle of the air inlet box. The air inlet mechanism is provided with semiconductor refrigeration sheets, a motor, a rotary rod, stirring rods and connecting rods, when the semiconductor refrigeration sheets are started, a temperature value in the air inlet box can be lowered, pressure intensity is caused to be lowered to accelerate speed for air to flow into the air inlet box, and the air inlet quantity is increased in equal time. A motor is started, the motor drives the rotary rod to rotate, the stirring rods are of wave-shaped structures with different shapes, vortexes of different shapes can be generated, and cold air generated by the semiconductor refrigeration sheets canbe mixed.

The invention provides a temperature control circuit for silicon drift detector, comprising: a main control circuit, a first power supply circuit and a second power supply circuit. The first power supply circuit and the second power supply circuit are connected with the main control circuit. The first power supply circuit is a boost power supply circuit; the second power supply circuit is an anti-phase power supply circuit. The boost power supply circuit is connected with an internal temperature detection circuit and an environmental temperature detection circuit. The main control circuit is connected with a temperature feedback circuit through a serial port circuit. The environmental temperature detection circuit is connected with the temperature feedback circuit. The main control circuit and the temperature feedback circuit are connected with a temperature regulating and controlling circuit to solve the problems in the prior art that temperature cannot be preset according to environment, that temperature control response is slow and the fluctuation is large, and that the stable time for the refrigeration temperature of the silicon drift detector is long and the refrigeration temperature is not low enough.

The invention provides an air conditioner control method, an air conditioner control device, a storage medium and an air conditioner. The method comprises the following steps of judging whether the outdoor ambient temperature is greater than or equal to a set ambient temperature judgment value after a compressor of the air conditioner is started; and if the outdoor ambient temperature is judged tobe greater than or equal to the set ambient temperature judgment value, determining whether to control the compressor to stop or not according to whether the power supply voltage of the compressor isgreater than or equal to the set voltage or not so as to perform temperature protection on an Intelligent Power Module (IPM) of the air conditioner. The scheme provided by the invention can avoid theproblem of damage to the IPM of the air conditioner compressor under the condition of high ambient temperature and high voltage power supply.

The invention discloses a method and a device for controlling vehicle-mounted system temperature. The method for controlling the vehicle-mounted system temperature comprises the steps that whether thetemperature value of a vehicle-mounted system CPU within the specific period of time exceeds the first preset temperature is judged; and if the judgment result is yes, the operation load of the vehicle-mounted system CPU is reduced. The temperature change of the vehicle-mounted system CPU in the operation process is monitored, and the method of timely turning off certain functions in use or reducing the operation load of the CPU is used so that the heat produced by operation can be reduced, the temperature value of the whole vehicle-mounted system can be reduced, the vehicle-mounted system can be protected, and the probability of safety hidden trouble caused by instability and hardware damage of the vehicle-mounted system because of excessively high temperature can be reduced.

The invention discloses a vortex expansion machine in the field of expansion machines. The vortex expansion machine aims at solving the technical problems that under the high-temperature condition, the exhaust resistance of the vortex expansion machine is large, the temperature of a work cavity is increased, and heat deformation of vortex teeth is increased. The vortex molded line of the vortex expansion machine is a various-base-radius involute. A fixed-base-radius involute vortex expansion is adopted as a prototype, and vortex teeth are machined according to the various-base-radius involuteunder the condition that the vortex tooth height, the vortex tooth spread angle, the tooth head correction parameter and the initial base radius are maintained unchanged. Compared with an original expansion machine, flowing in a back pressure cavity is improved, the temperature of the movable vortex teeth and the static vortex teeth is reduced, the heating effect of an air suction and collection chamber on the work cavity is weakened, and the deformation of the vortex teeth is reduced.

The invention provides a heat dissipation control method, device and system, an apparatus, and a machine-readable medium. The method comprises: determining, by obtaining the temperature value of a target object as a current temperature value, whether the current temperature value reaches a preset temperature threshold value; if so, executing the motor drive, and opening a preset heat dissipation channel; operating a fan and instructing, by the fan, the air to enter an area where the target object is located from the heat dissipation channel, and/or instructing the air in the area where the target object is located to flows out of the heat dissipation channel, so that the temperature value of the target object is lower than the preset temperature threshold value; ff the humidity reaches a preset humidity threshold, executing the motor drive to close the opened preset heat dissipation channel to ensure the waterproof performance of a terminal device in a heat dissipation state. The heatradiation control method not only can discharge the heat of the terminal device, but also can ensure the waterproof performance of the terminal device during the heat radiation process.

The invention relates to a gradient coil for a magnetic resonance imaging device, comprising a main coil (10), a shielding coil (20), at least one insert (30) and a casting body (40). The main coil isused for forming a gradient imaging magnetic field. The shielding coil is arranged around the main coil and is separated from the main coil. The shielding coil is used for forming a gradient shielding magnetic field. Each insert comprises a phase change material and is arranged to be in contact with the main coil and/or the shielding coil. And the pouring main body, the main coil, the shielding coil and the at least one insert form a pouring whole through pouring so as to fix the mutual positions of the main coil, the shielding coil and the at least one insert. The gradient coil is small in temperature fluctuation in the using process, high in imaging quality, small in size and capable of saving energy. In addition, the invention further provides a magnetic resonance imaging device comprising the gradient coil.

The invention relates to an electrode-less gas discharge lamp, which comprises the following parts: a vacuum sealed bulb (1) provided with a cavity (2), which is filled with ionizable metallic vapor and rare gas; a heat transfer element (3), which is positioned in the cavity partly at least; magnets (4) fixed on the heat transfer element; and a coil (5) which is wrapped around a central cylinder formed by the magnets and the heat transfer element. The electrode-less gas discharge lamp is characterized in that the magnets are cylindrical magnets of which the cross section is fan-shaped and the number of the magnets is at least two, the heat transfer element is a metal cylindrical body and at least one section of the cylindrical body in the metal cylindrical body is provided with a plurality of lateral surfaces with planar shapes, and each magnet is fixed on the lateral surfaces with planar shapes of the metal cylindrical body. The electrode-less gas discharge lamp has a simple structure, and the temperature of the magnets is low.

The invention discloses an economic management teaching demonstration device. The economic management teaching demonstration device comprises a bottom plate. The top of the bottom plate is welded witha side baffle. The left side of the top of the side baffle is movably mounted with a first rotating shaft, and an outer wall of the first rotating shaft is sleeved with a first painting brush and a first gear; a right side of the first gear is meshed with a second gear, a right side of the second gear is meshed with a third gear, and a right side of the third gear is meshed with a fourth gear; the second gear and the third gear are movably mounted on the side baffle; a second rotating shaft is inserted into an axial center of the fourth gear; and one end of the second rotating shaft is movably mounted on the side baffle. The economic management teaching demonstration device can vividly demonstrate and explain a variety of economic concepts by setting a variety of economic management demonstration models; and the consistency of all the demonstration models is high, and all the demonstration models can be connected in series to form a knowledge chain, so that students can deeply understand the economic concepts.

The invention discloses a boiler used for treating papermaking waste liquor. The boiler comprises a boiler body, a drum, convection pipe bundles, a convection pipe bundle lower header I, a convection pipe bundle lower header II, an economizer, an air pre-heater and a supporting assembly. The boiler body is composed of a combustion chamber and a smoke buffering area. The combustion chamber communicates with the smoke buffering area. The multiple convection pipe bundles are arranged in the smoke buffering area side by side. A steam-water separating device is arranged in the drum, the combustion chamber is fixed to the supporting assembly, and the drum is arranged on the top of the combustion chamber. The convection pipe bundle lower header I and the convection pipe bundle lower header II are fixed to the lower portion of the combustion chamber. The convection pipe bundle lower header I communicates with the convection pipe bundle lower header II. The combustion chamber is a square frame defined by a front wall, a rear wall, a left wall and a right wall in a mutual buckling manner. According to the boiler, the papermaking waste liquor can be combusted as much as possible, and accordingly, heat of organic matter in the waste liquor is recycled; and in addition, the temperature of the smoke can be reduced in the smoke discharging process, meanwhile, the flow speed of the smoke can be reduced, and sedimentation and capturing of sodium carbonate in the smoke are convenient.