261results about How to "Maintain a constant temperature" patented technology

A heat spreader for transferring heat from a heat source to a heat sink using a phase change coolant, includes an array of cells, each cell having at least one microporous wick for supporting flows of the coolant in the liquid phase, via capillary action, within the spreader from proximate the heat sink to proximate the source and at least one macroporous wick for supporting flows of the coolant, in the liquid and vapor phase, within the spreader from proximate the source to proximate the heat sink.

The invention includes providing gallium nitride materials including thermally conductive regions and methods to form such materials. The gallium nitride materials may be used to form semiconductor devices. The thermally conductive regions may include heat spreading layers and heat sinks. Heat spreading layers distribute heat generated during device operation over relatively large areas to prevent excessive localized heating. Heat sinks typically are formed at either the backside or topside of the device and facilitate heat dissipation to the environment. It may be preferable for devices to include a heat spreading layer which is connected to a heat sink at the backside of the device. A variety of semiconductor devices may utilize features of the invention including devices on silicon substrates and devices which generate large amounts of heat such as power transistors.

A method for lowering the temperature of a portion of a subsurface formation is provided. Preferably, the formation is an oil shale formation. The method includes the step of injecting a cooling fluid under pressure into a wellbore, with the wellbore having been completed at or below a depth of the subsurface formation. In one embodiment the wellbore has an elongated tubular member for receiving the cooling fluid and for conveying it downhole to the subsurface formation. The wellbore also has an expansion valve in fluid communication with the tubular member through which the cooling fluid flows. The method then includes the steps of injecting a cooling fluid under pressure into the wellbore, and expanding the cooling fluid across the first expansion valve. In this way, the temperature of the cooling fluid is reduced. The temperature of the surrounding formation is likewise reduced through thermal conduction and convection. In another embodiment, a partially frozen slurry is used as the cooling fluid.

An electrically operated fluid dispenser for dispensing a pattern of viscous fluid onto a substrate during a run mode. The dispenser is turned off and does not dispense the viscous fluid during a standby mode of operation. The dispenser includes a dispenser body having an outlet and an armature disposed in the dispenser body for movement between an opened position allowing a fluid flow from the outlet and a closed position preventing the fluid flow from the outlet. A coil is mounted adjacent the armature and selectively generates an electromagnetic field for moving the armature between the opened and closed positions. A controller includes different apparatus and methods for using the coil as a heater as well as providing other heat transfer devices on the dispensing valve to maintain a constant temperature either, during only the run mode or, during both, the run and the standby modes. The above dispensing valve heating control facilitates a design of an electrically operated fluid dispenser having a body with a fluid passage intersecting first and second sides of the body and a dispensing outlet in fluid communication with the fluid passage. The dispenser includes a heater and has feed member mounted to the first side of the body with one end of the fluid passage in the feed plate fluidly connecting with one end of the fluid passage in the dispenser body. The dispenser also has an cap mounted to the second side of the dispenser body to terminate the fluid passage on the second side of the dispenser body.

The invention discloses a novel temperature control moxibustion device which comprises a cylindrical moxibustion box and a box cover, wherein a moxibustion hole is formed in the bottom of the moxibustion box, and a detachable dust stop screen is arranged on the moxibustion hole. The temperature control moxibustion device further comprises a support frame and a temperature sensor, the support frame is fixed in the moxibustion box, and the temperature sensor is fixed on the bottom surface of the moxibustion box; a screw rod perpendicular to the bottom surface of the moxibustion box is arranged at the lower part of the support frame, a nut seat is in bolted connection with the screw rod, and a fixing ring corresponding to the moxibustion hole is fixed on one side of the nut seat and used for inserting moxa sticks; and the screw rod is driven by a reducing motor fixed on the support frame to rotate. According to the novel temperature control moxibustion device, the therapeutic temperature is regulated by controlling a distance between a moxa stick fire point and a moxibustion acupuncture point, the constant temperature of the moxibustion acupuncture point of a human body is maintained, and the whole device is portable and flexible, so that the temperature of the moxibustion acupuncture point of the human body can be accurately controlled, and an optimal curative effect is achieved.

A method for lowering the temperature of a portion of a subsurface formation is provided. Preferably, the formation is an oil shale formation. The method includes the step of injecting a cooling fluid under pressure into a wellbore, with the wellbore having been completed at or below a depth of the subsurface formation. In one embodiment the wellbore has an elongated tubular member for receiving the cooling fluid and for conveying it downhole to the subsurface formation. The wellbore also has an expansion valve in fluid communication with the tubular member through which the cooling fluid flows. The method then includes the steps of injecting a cooling fluid under pressure into the wellbore, and expanding the cooling fluid across the first expansion valve. In this way, the temperature of the cooling fluid is reduced. The temperature of the surrounding formation is likewise reduced through thermal conduction and convection. In another embodiment, a partially frozen slurry is used as the cooling fluid.

An arrangement for supplying heat to a motor vehicle when the vehicle engine is not running. At least one component is operated by electrical energy from a battery in the motor vehicle during the heat supplying to the vehicle and particularly for heating an interior space in the vehicle. An alarm which is activated when the voltage of the battery reaches a lowest acceptable level informs a drive to be able to prevent further lowering of the voltage level of the battery. The heat supply component may be a burner or may be the circulating engine coolant system and may include a fan.

A system for fiber optic packaging includes a first substrate and a first deformable pad coupled to the first substrate. The first deformable pad is characterized by a thermal conductivity greater than 1 W / mK. The system also includes a fiber coil having at least a portion embedded in the first deformable pad to provide physical contact between the at least a portion of the fiber coil and the first deformable pad. The system further includes a second substrate coupled to the fiber coil and at least a portion of the first deformable pad.

The invention discloses an outdoor return air preprocessing method of a central air-conditioning system. The method comprises the steps as follows: temperature and humidity sensors arranged at all points of a return air section of the central air-conditioning system are used for collecting temperatures and humidity of the points respectively; the temperatures and the humidity which are collected by the return air temperature and humidity sensor, the fresh air temperature and humidity sensor, the mixed return air and fresh air temperature and humidity sensor and the air supply temperature and humidity sensor are judged, and then five zones are divided; and an exhaust valve, a fresh air valve, a return air valve and a cooling air valve are controlled correspondingly in the five zones to satisfy temperature and humidity requirements in an air-conditioned room. According to the method, the certain relative humidity of the air-conditioned room is guaranteed while the outdoor low-temperature air is effectively used for cooling the room, that is, the cooling purpose is achieved on the premise that the moisture of the air-conditioned room is not lost, and meanwhile, the humidification amount is reduced, so that the energy conservation purpose is achieved.

The invention discloses a mushroom house environment machine. The real-time temperature, humidity and carbon dioxide concentration in a mushroom house are sensed through a temperature sensor, a humidity sensor, a carbon dioxide concentration sensor and the like which are arranged in the edible mushroom house and then analyzed and processed through a programmable logic controller (PLC), and a compressor, a centrifugal fan, an electric heating tube group, a humidifier, an electric fresh air device, a ventilation fan and the like are automatically controlled to realize the automatic adjustment and control of the ambient temperature, humidity and carbon dioxide concentration in the edible mushroom house and ensure constant temperature and constant humidity in the mushroom house. When the carbon dioxide concentration in the edible mushroom house is increased, the electric fresh air device and the ventilation fan are automatically turned on to control the carbon dioxide concentration withinan appropriate range so that the edible mushroom house has a good edible mushroom growth environment. The mushroom house environment machine is reasonable and compact in structure, reasonable in cost, simple and convenient to operate and good in control effect, thus being helpful for large-scale factorization of edible mushroom growing and production, and worth generalizing and applying.

The invention discloses an alternating current (AC) impedance spectroscopy automatic testing device of positive temperature coefficient (PTC) thermistor. The device comprises an electric heating oven for holding a sample, a temperature control and protection circuit for maintaining the electric heating oven at a constant temperature and preventing overcurrent, an impedance measuring circuit for measuring the sample impedance, and a master control machine connected with two circuits via a CAN bus respectively and used for receiving a user instruction and controlling the two circuits to accomplish measurement. The impedance measuring circuit in the invention is based on high-speed synchronous data acquisition and digital signal processing technology, satisfies the measurement requirements for high precision, wide measurement range and wide frequency band, and has features of small volume, low cost and convenient operation. Data communication among the temperature control and protection circuit, the impedance measuring circuit and the master control machine is realized via CAN buses, to achieve good real-time property and high reliability. The invention can ensure constant-temperature testing environment, carries out multi-frequency point scanning measurement to the AC impedance of the tested sample, and realizes full automatic testing of impedance-temperature characteristics of the PTC thermistor under different frequencies.

A regenerative braking system for a vehicle utilizing diversion of energy for efficient use or maintaining consistent vehicle performance. The regenerative braking system includes a generator for producing regenerative energy during slowing and includes switches connected to a battery and a plurality of devices. A processor is connected with the battery and the switches for controlling the configuration of the switches based on a characteristic of the battery. If the battery has a state of charge exceeding a predetermined threshold, the processor controls the switches to route the regenerative energy to the other devices. The processor also controls the switches to provide regenerative energy to specific devices where it may most desirably be utilized. Heating and cooling units of the vehicle may be alternatively or simultaneously connected to receive the regenerative energy for providing consistent vehicle slowing performance when the battery state of charge exceeds the predetermined threshold.

Disclosed are a medicament for the treatment of burns and sore and ulcer diseases, and a wound plaster made of the same. The invention belongs to the technical field of traditional Chinese medicine, and specifically relates to a medicament for the treatment of burns and sore and ulcer diseases. The medicament mainly comprises, by weight, 35 to 65 parts of rosin, 20 to 40 parts of borneol, 30 to 90 parts of beeswax and 500 to 1000 parts of sesame oil. All the components in the invention are in reasonable allocation and complement each other. The utilization of the invention enables effective treatment of burns and scalds and skin ulcer, alleviating pains of patients.

There is provided a bed device comprising: a support plate; a spring mattress provided on the support plate; a mat provided on the spring mattress; and a hot-air supply device for supplying hot air into the spring mattress, wherein the hot-air supply device is received in the spring mattress, wherein the hot-air supply device includes: a hot-air generation unit for generating hot-air; a hot-air discharge tube protruding from the hot-air generation unit by a predetermined length to discharge the hot-air generated in the hot-air generation unit into the spring mattress; and two hot-air guide members symmetrically disposed about the hot-air discharge tube, wherein the two air guide members are configured to guide the hot-air such that the hot air discharged from the hot-air discharge tube is distributed uniformly over an entire area of the spring mattress.

The invention discloses a full-automatic laminated glass production system and a process thereof. According to the full-automatic laminated glass production system, a sheet assembly table, a cleaning machine, an air drying machine, a positioning film paving sheet closing table, a rolling machine and a sheet disassembly table are connected sequentially; an integrated air purification device, a glue film frame, a first motor and a second motor are arranged on a base; the base is connected with a positioning platform by a support; a transmission shaft, a positioning plate, a glue film clamp, a third motor and a third guide rail are arranged on the positioning platform; an inclined transmission wheel and a horizontal transmission wheel are arranged on the transmission shaft; a positioning pulley is arranged on the positioning plate; a sucker frame is arranged on the positioning platform; two air cylinders are hung on the sucker frame; a sucker plate is arranged at the lower ends of the two air cylinders; vacuum suckers, a transverse film cutting mechanism, a longitudinal film cutting mechanism, a first guide rail and a second guide rail are arranged on the sucker plate; and a glue film spreading machine and a glue outlet are formed on the glue film frame. The full-automatic laminated glass production system is high in automated degree, and manual operation is replaced, so that the production efficiency, product quality and safety are improved greatly, and the field cost and labor cost are saved greatly.

Traditional temperature-control products have the problem that the temperature of the working surface reaches the setting temperature too slowly when heating up or recovering from a temperature drop. A traditional temperature control circuit and temperature-settings selector components are modified to solve this problem. When heating begins, the modified circuit increases the initial setting temperature to be above the target setting temperature. The modified circuit then adjusts the setting temperature by measuring the heating power consumption. Once the working surface of the temperature control product reaches the initial setting temperature, the heating power consumption drops and the modified circuit reduces the temperature setting to the target setting temperature. The temperature control product can rapidly achieve the target temperature. A positive-temperature-coefficient heating component is used in the temperature control product.

The invention discloses a fully-automatic relay terminal welding wire machine, which comprises a frame, a workbench arranged on the frame and a control box arranged on the workbench, wherein the workbench is sequentially provided with a cutting and stripping wire feeding and welding device and a cutting and feeding material comb wire welding device; the wire feeding end of the cutting and stripping wire feeding and welding device is provided with a setting-out unit; the terminal feeding direction of the cutting and feeding material comb wire welding device is provided with a terminal placing unit; the cutting and stripping wire feeding and welding device and the cutting and feeding material comb wire welding device are connected through a conveying and recycling device; and one side of the conveying and recycling device is also provided with a blanking unit. Automation of the welding work of the relay is realized, the wire and the terminal welding position are accurately positioned, the processing precision of each station is improved, the consumed time between the stations is greatly reduced, the stations are effectively connected, the product welding quality is ensured, the yield of the product is improved, time and labor are saved, the production efficiency is greatly improved, and the automatic degree is high.

An improved temperature control device for maintaining the temperature of the contents of a beverage receptacle. The device is designed to keep a contained two-liter bottle cold for long periods of time. The device includes an annular column formed from insulating material encased within a durable sheath. The annular column defines a cylindrical container for placement of the two-liter bottle. A cover is included enclosing the two-liter bottle within the container. The cover is also formed from an insulating material and enclosed within a durable sheath. An outer wrap surrounds the cover and container, hingedly attaching the cover to the container so that the cover is removably securable. The outer wrap additionally includes a zipper, enabling the nylon wrap to be opened or closed, fastening the cover to the cylindrical container. The device also includes a variety of carrying straps that are removable from the outer wrap for ease and convenience.

The invention provides an electrothermal heating maintenance device inside concrete, wherein a heating resistance wire is bundled on the structural reinforcing steel bar inside concrete of buildings in construction, the heating resistance wire is connected with a power supply via a low-voltage power supply cable outside the concrete, a lifting protective frame comprises a frame body and a safety net attached to the frame body, the frame body is formed by cross connection of a vertical main keel with transverse sub-keels, the left side and the right side of the frame body are connected with vertical edge steel tubes, the vertical main keel is connected with the floor of building via a wall-attached hanging part, the frame body is a steel-wood structure, the top of the vertical main keel is provided with H-shaped steel provided with lifting holes, and the vertical main keel is also used as vertical guide rail. By using the manner of internal heating, the device has high heat efficiency and low thermal loss, and can save a great deal of energy; the heating speed of concrete can be reliably guaranteed, and the temperature is easily controlled; the maintenance conditions of concrete are good, and the construction quality can be guaranteed; the early strength of concrete is high, thereby creating favorable conditions for continuous upper construction and shortening the construction period.

The invention discloses an intelligent control plastic tent, which comprises a plastic tent body; the periphery of the plastic tent body is provided with a rainwater collector; a water reservoir is arranged in soil under the rainwater collector, and is communicated with a water tower through an irrigation pump; the water tower is connected with a driptube network for irrigating crops in the plastic tent; a heat exchanger is arranged in the water reservoir; a liquid outlet pipe of the heat exchanger is connected with a heat exchange pump of which the liquid outlet pipe is connected with a liquid outlet pipe arranged on the top of the plastic tent body; the top of the plastic tent adopts a two-layer hollow pipe film, two sides of the top of the plastic tent are provided with liquid inlet pipes which are connected with a liquid inlet pipe of the heat exchanger, and two ends of a hollow pipe in the two-layer hollow pipe film are communicated with the liquid outlet pipe and the liquid inlet pipe respectively; and a heat sink is arranged in the plastic tent and is communicated with the water reservoir through a hot water circulating pump. The intelligent control plastic tent has a reasonable structure, and saves energy, water and manpower.

Traditional temperature-control products have the problem that the temperature of the working surface reaches the setting temperature too slowly when heating up or recovering from a temperature drop. A traditional temperature control circuit and temperature-settings selector components are modified to solve this problem. When heating begins, the modified circuit increases the initial setting temperature to be above the target setting temperature. The modified circuit then adjusts the setting temperature by measuring the heating power consumption. Once the working surface of the temperature control product reaches the initial setting temperature, the heating power consumption drops and the modified circuit reduces the temperature setting to the target setting temperature. The temperature control product can rapidly achieve the target temperature. A positive-temperature-coefficient heating component is used in the temperature control product.

The invention discloses an automatic pulse cold compressing system, including an air refrigerating unit in which an evaporator is arranged in a large water tank, and also including a circulating path composed of a small water tank, a membrane pump, an ice bag and the large water tank; a central processing unit, which is electrically connected with the compressor of the air refrigerating unit and a first temperature sensor respectively. The central processing unit collects the value of the first temperature sensor, and controls the compressor according to the collected temperature value; meanwhile, the central processing unit outputs PWM waves to a pulse control circuit which outputs adjustable voltage to the membrane pump according to the PWM waves, so that the rotation speed of the membrane pump changes and outputs water with different pressure into the ice bag. The cold compressing method includes the steps that: the compressor refrigerates and cools water in the large water tank, the membrane pump pumps the water into the ice bag, and thereby cold compress therapy to an infected part is achieved. Meanwhile, the membrane pump of the invention also can output the water with different pressures into the ice bag, thus also achieving massage to the infected part, and further increasing the cold compressing effect.

The invention discloses a chromatographic column, comprising a column body and sealed ends at the two ends of the column body; the column body consists of an external pipe and an internal pipe which are mutually embedded; a sealing part is arranged between the internal wall of the two ends of the external pipe and the external wall of the internal pipe; the two ends of the internal pipe are respectively provided with a movable sleeve which is provided with an internal thread; the sealed end comprises a column connecting pipe which is internally provided with an axial through hole and a pressing cap which is fixedly connected on the external wall of the column connecting pipe and provided with an external thread; the through hole of the column connecting pipe close to the column body end is internally provided with a filter plate; the pressing cap on the seal and the movable sleeve on the column body are connected with each other by the thread; the column connecting pipe is inserted into the internal pipe. The chromatographic column of the invention has the advantages of simple structure, being easy for removal and replacement, low cost, good sealing and being recyclable and reused repeatedly.

The invention discloses a lifting type health caring hip bath device, comprising a basin body above an integrated seat body composed of an upper seat body and a lower seat body, a pedestal arranged at the bottom of the seat body, a heating device arranged at the bottom of the basin body, a temperature controller connected with the heating device, and a lifting device arranged on the upper seat body. The lifting device comprises a lifting mechanism and a supporting element; and the lifting mechanism can be electromechanical, pneumatic or hydraulic lifting mechanism. The lifting mechanism is provided with a limit switch. A backrest is arranged at the lateral upper side of the basin body, the shape of the lateral side of the backrest is in accordance with the back contour of the human body, the angle of the backrest can be forwardly and backwardly adjusted, and bulges made of far infrared physical therapy stones or trace element physical therapy stones are arranged on the contact surface of the backrest and human body and provided therein with heating bodies. The basin body is separated from or fixedly connected with the upper seat body.

The invention discloses a valve element injection mold. The valve element injection mold comprises a cover plate (1), an upper mold fixing plate (2), an upper mold plate (3), a lower mold plate (4), a mold leg (5), a spout (17) fixed to the cover plate (1), and a valve element (7), wherein a runner is arranged below the spout (17); the upper mold fixing plate (2) is fixed to the lower surface of the cover plate (1); the lower mold plate (4) is fixed to the upper surface of the mold leg (5); the upper mold plate (3) is located between the upper mold fixing plate (2) and the lower mold plate (4); a first protrusion (9), a second protrusion (10) and a third protrusion (11) are arranged on the outer side face of the valve element (7) in the axis direction of the valve element (7) in sequence from top to bottom; and annular grooves are formed in the outer side faces of the first protrusion (9), the second protrusion (10) and the third protrusion (11). The valve element injection mold is low in cost, high in precision, high in production speed, capable of achieving batch production and good in quality.

Provided are a device and an experimental method for researching the insulating property of micro water containing SF6 gas. The device is mainly composed of a stainless steel tank, a micro sampling mechanism, ball valves, a micro water on-line monitoring system, and a constant-temperature heating unit. According to the method, the temperature and humidity of SF6 gas in the tank are adjusted by the device, so that the insulating property of micro water containing SF6 gas at different temperatures can be researched. The temperature and humidity of SF6 gas can be controlled accurately, and the reliability and accuracy are high. The device is simple in structure and convenient to operate, and can be widely promoted.

The invention discloses an IGBT device testing device and testing method. The device comprises: a variable temperature and humidity test box, which is used for controlling the temperature and humidityof a test environment, wherein each test station is arranged in the variable temperature and humidity test box, and each test station is used for fixing one IGBT and dissipating heat of the IGBT; a test and control module, which is used for carrying out a period test on the IGBT and carrying out a high-voltage test and a static parameter test on the IGBT in sequence in each period test; a test power supply, which is connected with the grid electrode of the IGBT and used for outputting a test pulse signal, which is used for controlling the on-off state of the IGBT; and a plurality of power supply leads, which are used for connecting an external power supply with the IGBT and acquiring the leakage current of the IGBT. According to the invention, the variable temperature and humidity test box is used for keeping the test temperature in a high-temperature and high-humidity environment state, and after the IGBT is subjected to high-voltage test, the measurement power supply is used for carrying out static parameter test on the IGBT, so that the problem that the degradation process of a failure device and other parameter change rules cannot be understood is solved.

The invention provides a portable digital display electric heating constant-temperature semen collection cup for foxes. The portable digital display electric heating constant-temperature semen collection cup comprises a semen collection cup body, a heating device and a power source controller. The outer surface of the lower end of the semen collection cup body is provided with a displayer, a temperature adjusting button, a power switch and a charging jack; the upper end of the semen collection cup body is provided with a gland which can be connected with the semen collection cup body and a sealing cover connected with the gland; the bottom end of the inside of the semen collection cup body is provided with a spring; the inner wall of the semen collection cup body is provided with a groove, in which a temperature sensor is arranged; the upper end of a semen collection tube is conical in shape (shaped as a reversed cone frustum) and a protruding edge extends outward horizontally from the top end; an opening o the inner side of the upper end of the semen collection cup body is an inclined surface (similar to a side wall of a hopper body) matching the upper end of the semen collection tube; the upper end of the semen collection cup body is provided with a sunken groove matching the protruding edge. The portable digital display electric heating constant-temperature semen collection cup is convenient to carry and enables semen to be kept in a proper constant-temperature state in semen collection and fresh semen transport processes.