377 results about "Thermoelectric refrigeration" patented technology

A chair or sofa including a seat, an enclosed armrest adjacent to the seat, and a thermoelectric refrigeration compartment, mounted within the armrest is provided. The armrest includes an upper portion connected to a main portion of the armrest by a hinge along an outer surface thereof, movable away from a home position against the main portion of the armrest, the compartment preferably being mounted in the main portion such that moving the upper portion away from the home position exposes the upper surface of the compartment. The compartment may have an upwardly opening lid which opens to a thermoelectrically cooled or heated cavity which may be sized to accept several beverage containers or in an alternate embodiment it may be sized to accept one upright beverage container.

The invention discloses a cold end and hot end remotely-separated type thermoelectric refrigeration semiconductor or thermoelectric power generation semiconductor and a product applying the semiconductor. Two PN junctions are connected through a lead wire in a back-to-back mode to form a PN-NP junction or an NP-PN junction, and cold ends and hot ends are separated through the lead wire. By means of the method, multiple cold ends and multiple hot ends can be collected and distributed, can coiled to form an electric refrigeration blanket, a plurality of computer chips or circuit devices can be cooled, forced cooling can be achieved by gathering the hot ends, and natural cooling can be achieved by dispersing the hot ends.

The invention discloses a high vacuum exhaustion laser sealing device and a process of a micro-infrared detector. The device mainly comprises an outer shell, a sample platform, a heating ring and a temperature and vacuum keeping system. The process comprises the following steps: fixing a sample on the sample platform; connecting the heating ring below the sample platform with a fixed groove through a bolt; connecting the sample platform through three support posts fixed at the bottom of the outer shell; closing a reinforced glass sealing door; pumping high vacuum in a cavity by a vacuum exhaustion dolly through an exhaust port, and opening the power supply of a heater in exhaustion; baking devices to exhausting air completely; sealing the sample by a laser technology through a laser transmission port after finishing preparing vacuum. With the advantages of simple structure and convenient use, the invention establishes a process foundation for a detector encapsulation technology tending to integration and micromation, and provides a reliable execution space for a non-refrigeration type or thermoelectric refrigeration type micro-infrared detector for exhaustion by high vacuum baking and laser sealing after removing an exhaust pipe.

The invention discloses a dehumidification and anti-condensation intelligent control system and method for a ring main unit. The system is based on the thermoelectric refrigeration technology and the wireless sensor network technology, a fuzzy fractional order PID controller is adopted, the temperature and the humidity of the working environment are monitored in real time, and intelligent control dehumidification is achieved. In combination with a wireless sensor network platform with the complete function, a user can achieve the purposes of holding a device for polling in a field and remotely and online monitoring the state of equipment in real time. The condensation dehumidification device can effectively reduce the humidity of space air, the condensation phenomenon is avoided, and the condensation dehumidification device has the advantages of being small in size, low in operation cost, long in service life and high in reliability, and is widely applied to dehumidifying various closed cabinets such as a switch cabinet, a power distribution cabinet and a terminal box.

The invention provides a cooling and heating system of a power battery of an electric automobile. The cooling and heating system comprises a working medium pump, a battery heat exchanger, an auxiliary electric heater, a liquid storage device, a plurality of heat exchangers and a plurality of three-way valves; a working medium which has a gas-liquid two-phase or liquid state in a utilization temperature range is adopted; the parts and structural parts are connected from an outlet of the working medium pump according to a designed route; heat exchange is carried out between the working medium pump and an external cold source or an external heat source by utilizing the first heat exchanger and heat exchange is carried out between the working medium pump and environment air by utilizing the second heat exchanger; the external cold source is a cold quantity provided by a steam compression type refrigerating system or a cold quantity provided by thermoelectric refrigeration equipment or a cold quantity provided by other cold sources; the external heat source is a heat quantity provided by a steam compression type heat pump or a hot quantity provided by thermoelectric equipment or a heat quantity provided by other heat sources. By adopting the cooling and heating system of the power battery of the electric automobile, provided by the invention, the power battery can be kept in a relatively good working temperature region all the year and electric energy consumed by cooling or heating is reduced; the utilization efficiency of the power battery is improved and the cruising ability of the electric automobile can be prolonged.

The present invention discloses a numerical control driving method and an apparatus for a superradiance light emitting diode. A step response method is used. At the beginning of starting the apparatus, a PID parameter which effectively controls a thermoelectric refrigerator is acquired and is used for a PID control algorithm. The deviation of a thermistor temperature signal and a stated temperature signal is compared. The signal is outputted to the thermoelectric refrigerator through the control of the PID. The thermoelectric refrigerator is controlled to generate a corresponding cooling capacity, so the work environment temperature of a SLD is improved and the temperature stability of the SLD is improved. The present invention is capable of being applicable for the superradiance light emitting diodes produced by various manufacturers and has strong applicability. In addition, the present invention is capable of adjusting a control parameter according to different work environments, so the problem that the control of the fixed parameter is not capable of adapting the environment temperature change is effectively overcome. The control accuracy is improved and the output power of SLD and the stability of a central wavelength are effectively improved.

The invention discloses a nano-liquid electrostatic atomization and thermoelectric heat pipe integrated trace lubrication grinding device which comprises a grinding wheel with heat pipes and an electrostatic atomization combined spray nozzle in thermoelectric refrigeration and magnetic enhancement electric fields. Thermoelectric film materials cover the surfaces of two sides of the grinding wheel with the heat pipes, and extra electric fields are applied to the outsides of the thermoelectric film materials; a high-voltage direct-current electrostatic generator and a magnetic field forming device are arranged on the outside of the electrostatic atomization combined spray nozzle; the electrostatic atomization combined spray nozzle is connected with a nano-particle liquid supply system and a gas supply system; nano-liquid is subjected to electrostatic atomization and is sprayed to grinding zones by the electrostatic atomization combined spray nozzle, and heat in the grinding zones can be absorbed; the heat can be absorbed by the thermoelectric film materials in the grinding zones under thermoelectric effects, and absorbed heat can be dissipated by the grinding wheel with the heat pipes after the thermoelectric film materials are separated from the grinding zones, so that a Carnot cycle can be formed. The nano-liquid electrostatic atomization and thermoelectric heat pipe integrated trace lubrication grinding device has the advantages that nano-liquid electrostatic atomization and thermoelectric refrigeration and heat pipe refrigeration technologies are integrated with one another, accordingly, a large quantity of grinding heat can be absorbed after the nano-liquid electrostatic atomization and thermoelectric heat pipe integrated trace lubrication grinding device reaches the grinding zones, the grinding temperatures can be reduced, and obvious refrigeration effects can be realized for the grinding zones.

The invention provides a method for preparing bismuth telluride quantum dots by ultrasonic technology, which comprises the steps of: 1) taking a certain amount of solid bismuth telluride powder and fully grinding it in an agate mortar. 2) Add an appropriate amount of nitrogen-methylpyrrolidone (NMP) solution to the ground powder and mix, and place the above-mentioned mixture in an ultrasonic instrument for ultrasonication for a cumulative time of 4 hours. 3) Centrifuge the suspension system after ultrasonication, and collect the supernatant liquid to obtain the bismuth telluride quantum dot solution. The present invention adopts a very simple and low-cost preparation process to successfully obtain bismuth telluride quantum dots. The obtained quantum dots have good dispersion and can fluoresce under the irradiation of ultraviolet lamps. They are expected to be used in thermoelectric power generation, thermoelectric refrigeration and sensors, etc. fields are applied.

The invention discloses a thermoelectric refrigerating/heating system. The thermoelectric refrigerating/heating system is characterized in that at least a part of multiple thermoelectric modules are connected into a switch matrix, so that the access thermoelectric modules can be variably electrically connected with one another under on and off actions of various controllable switches in the switch matrix, and direct-current electricity can be provided for each thermoelectric module; on or off of each controllable switch is controlled by a central controller; temperature sensors are used for measuring surface temperatures of cooled/heated objects at the corresponding thermoelectric modules and transmitting measured temperature data to the central controller connected with the temperature sensors; the central controller performs computation according to stored target temperatures and the received surface temperature data of the cooled/heated targets to obtain on or off instructions for the various controllable switches in the switch matrix, so that the surface temperatures of the cooled/heated objects can reach the target temperatures, and power of a power source is minimized; on or off states of the various controllable switches are controlled by the central controller according to the on or off instructions for the various controllable switches in the switch matrix.

A thermoelectric refrigerator apparatus (20) comprising a thermoelectric device (1) having an upper face (1a) and a lower face (1b), a sealed cavity (22) for containment of a heat transfer liquid (8) in direct thermal contact with the upper face (1a) of the thermoelectric device (1)5 the cavity (22) being configured to allow convective flow (21) of the heat transfer liquid (8) from the upper face (1a) of the thermoelectric device (1) to an upper surface (12) of the cavity comprising a heat dissipation area (12) so as to transport heat from the lower face (1b) to an external environment via the heat dissipation area (12), wherein the thermoelectric device (1) is at least partially encapsulated by an encapsulating medium (2) providing a fluid seal around a perimeter edge (7) of the thermoelectric device (1) between the upper and lower faces (1a, 1b).

The application relates to an combined heating power and cooling apparatus with energy storage for an active distribution network and its operating method. The apparatus is comprised of a generation apparatus, a generator, a waste heat recovering and absorbing heat pump, a high temperature flue gas-water heat exchanger, a medium temperature flue gas-water heat exchanger, a low temperature flue gas-water heat exchanger, a energy storing electric heat pump, a high temperature energy storing canister, a low temperature energy storing canister, a cooling tower a number of circulating water pumps and a number of valves. The operating method changes the traditional operation modes of the system “determining electricity based on heat” and “determining electricity based on cooling”, causes the system to regulate power of the generated electricity on grid, participate in the regulation of grid load, solve the problem of a limited ability of generation peak regulation due to the inter-coupling of power generation, heat supply and cooling supply.

The invention discloses a thermoelectric refrigeration imaging system having isolation and heat-radiation structures and application thereof. The thermoelectric refrigeration imaging system comprises a front cavity group and a rear cavity group, wherein the front cavity group and the rear cavity group are sealed independently. The front cavity group is characterized in that a connecting seat (10) is fixedly connected to a lens seat (6); a probe (25) and a lens (7) are arranged on the lens seat (6); and the probe (25) is arranged at the rear side of the lens (7). The rear cavity group is characterized in that a power panel (3) is connected to the upper end surface of a support (1); a main processing circuit board (13) is arranged at the lower end surface of the support (1); a pretreatment circuit board (12) is arranged at the lower end of a main processing circuit (13); a protection cover (4) is arranged at the upper end of the thermoelectric refrigeration imaging system; an air-out groove is formed in one side of the protection cover (4) and an air-in groove is formed in a rear cover (16); and waveguide ventilating windows (17) are arranged in the air-in groove of the rear cover (16) and the air-out groove of the protection cover (4). The thermoelectric refrigeration imaging system have advantages of simple structure, reliable heat-radiation performance, and convenient target searching and is capable of realizing forced air-cooling heat radiation with the power larger than or equal to 35W.

The invention discloses a quick constant-temperature water preparation device which comprises a water pump, wherein an outlet of the water pump is connected with an inlet of a filter through a water inlet manifold; an outlet of the filter is respectively communicated with the head ends of a first branch and a second branch; the first branch is a heating branch which is provided with a hot-type electrothermal module; the second branch is a refrigeration branch which is provided with a thermoelectric refrigeration module; the tail ends of the heating branch and refrigeration branch converge to form a water outlet manifold; the water outlet manifold is connected with an automatic control system; the automatic control system judges whether the water body needs to be refrigerated or heated according to the water temperature of the water outlet manifold and the set water temperature, thereby controlling the water body to enter the refrigeration branch or heating branch; and the water body is refrigerated or heated to obtain the water body with the set water temperature. The quick constant-temperature water preparation device can be used for quickly preparing continuous constant-temperature water flows in different temperature states (low temperature, normal temperature, high temperature and the like). When the water body is refrigerated, the thermoelectric refrigeration module adjusts and distributes the water quantities of the two branches by an electric three-way adjuster, and a by-pass mode is utilized to control the outlet water temperature.

The invention relates to a low-dark count single-photon detection device for irradiation environment and a method using the low-dark count single-photon detection device to perform single-photon detection. The device includes an avalanche photodiode, a first-stage refrigeration structure, a temperature acquisition module, a temperature control algorithm module, a temperature control circuit and athermoelectric refrigeration module; the avalanche photodiode is used for detecting inputted single-photon-order optical signals under a Geiger mode; the first-stage refrigeration structure is used for controlling the installation ambient temperature of the avalanche photodiode device according to control signals; the temperature acquisition module is used for acquiring the temperature signals ofthe avalanche photodiode; the temperature control algorithm module is used for receiving the temperature signals of the avalanche photodiode and performing analysis according to the temperature of theavalanche photodiode and the current target temperature of the avalanche photodiode so as to obtain required temperature control signals; the temperature control circuit is used for generating driving control signals according to the temperature control signals given by the temperature control algorithm module; and the thermoelectric refrigeration module is used for adjusting the temperature of the avalanche photodiode. With the device adopted, the increase of the speed of dark count which is caused by irradiation can be effectively suppressed, and the difficulty of applying a low-dark countsingle-photon detector to the irradiation environment can be eliminated.

The invention discloses a thermoelectric refrigeration grinding wheel and a self-condensation minimal quantity water lubrication precision grinding system with the same. The thermoelectric refrigeration grinding wheel comprises an annular grinding wheel grinding layer, a refrigeration device and a circulation heat dissipation device. Workpieces can be ground by the grinding wheel grinding layer togenerate heat during work. The thermoelectric refrigeration grinding wheel and the self-condensation minimal quantity water lubrication precision grinding system have the advantages that a thermoelectric refrigeration sheet is used as a refrigeration portion, the heat generated during grinding can be transferred to a hot surface by the electrified thermoelectric refrigeration sheet by the aid ofheat pump principles, and heat gathered on the hot surface can be taken away by a circulation heat dissipation system; trace condensed water can be carried to grinding zones under low-temperature condensation effects of the surfaces of the thermoelectric refrigeration grinding wheel, accordingly, minimal quantity lubrication effects can be realized, and self-condensation minimal quantity water lubrication grinding can be implemented; the thermoelectric refrigeration grinding wheel and the self-condensation minimal quantity water lubrication precision grinding system can be mounted on differenttypes of grinding machines including surface grinding machines, cylindrical grinding machines, curved surface grinding machines and the like and can be applied to the different types of grinding machines.

The invention discloses a micro-channel temperature control device and method for a nucleic acid detection amplification reaction, and relates to a micro-channel temperature control device and method.The device comprises a nucleic acid amplification reaction module, a heating/cooling module, a micro-channel cooling module and a microcontroller module, wherein the nucleic acid amplification reaction module and the micro-channel cooling module are respectively mounted on the upper surface and the lower surface of the heating/cooling module; the nucleic acid amplification reaction module comprises a reaction plate, reaction columns and reaction tubes; the heating/cooling module is attached to the bottom of the reaction plate, and heating/cooling and temperature control of the reaction moduleare achieved through the microcontroller module; the micro-channel cooling module comprises a micro-channel plate, a micro-channel cover plate, a liquid tube, a cooling fan, a condenser, a liquid storage device and a water pump; and thermocouples are arranged at outlets of the reaction columns, a thermoelectric refrigeration sheet and the condenser and used for collecting temperature signals. Anouter-layer thermal insulation material is not used, so that the temperature distribution uniformity is improved, the cost is reduced, and the production operation convenience is improved. The power of the thermoelectric refrigeration sheet is improved and the heating/cooling rate of the reaction module is improved.

The invention provides a layered high-entropy MAX phase ceramic thermoelectric material and a preparation method thereof. A molecular formula of the layered high-entropy MAX phase ceramic thermoelectric material is Mn+1AXn, M is at least three elements selected from IIIB, IVB, VB and VIB group elements, A is at least one element selected from IIIA, IVA, VA and VIA group elements, X is a carbon element, and n is 1, 2 or 3. The layered high-entropy MAX phase ceramic thermoelectric material is advantaged in that an element ratio in the same position can be regulated and controlled according to actual requirements, the material has a hexagonal crystal system structure, the space group is P63/mmc, a crystal cell is formed by alternately stacking Mn+1Xn units and A-layer atoms in the c direction, and the high-entropy alloy is formed through the design of the combination of more than three M elements so that the high-entropy MAX-phase ceramic thermoelectric material has very wide applicationprospects in the fields of manned spaceflight, national defense war industry, automobile manufacturing, micro-nano electronics and the like, particularly in the fields of thermoelectric power generation, thermoelectric refrigeration and the like.

The invention provides a locomotive electrical cabinet cooling device and a locomotive electrical cabinet. The device comprises a central control unit and at least one refrigeration unit. The refrigeration unit comprises a heat conduction plate, a thermoelectric refrigeration element, a heat radiator, and a blower fan. The heat conduction plate and the heat radiator are respectively provided with a first temperature sensor and a second temperature sensor. The central control unit comprises a microcontroller and a measurement and control module. The microcontroller outputs a first control signal according to the first temperature sensor, and the measurement and control module receives the first control signal and controls the thermoelectric refrigeration element to operate at certain refrigerating power. The microcontroller outputs a second control signal according to the second temperature sensor, and the measurement and control module receives the second control signal and controls the blower fan in the refrigeration unit to operate at a certain speed. The device is better in cooling effect, reduces the size of the electrical cabinet, improves the maintainability, can quickly enable the internal temperature of the electrical cabinet to be reduced to be lower than the environment temperature, and greatly improves the cooling efficiency and speed.

The invention discloses a performance testing system and method for a thermoelectric refrigeration device. The system comprises a testing cabin, a pressure stabilizing layer, a testing layer and an air return layer are arranged in the testing cabin and communicated with one another, the thermoelectric refrigeration device to be tested is arranged in the testing layer, one side of the pressure stabilizing layer is connected with a vacuum air extractor, an air supply opening is formed in the other side, an air return opening is formed in the air return layer, and a temperature and humidity control device is arranged between the air return opening and the air supply opening; a hot end heat measuring module used for conducting heat exchange on the hot end of the thermoelectric refrigeration device to be tested and a cold end heat measuring module used for conducting heat exchange on the cold end of the thermoelectric refrigeration device to be tested are arranged in the testing layer. The performance testing system has the advantages that any temperature and humidity environment working condition can be simulated, the practical working performance of the to-be-tested thermoelectric refrigeration device used on any occasion can be measured, and the system has a high simulation reappearing ability; the system can further provide a vacuum testing environment and measure theoretical work parameters of the thermoelectric refrigeration device to be tested in the vacuum environment.