10 results about "Thermoelectric effect" patented technology

The invention relates to a graphene-based energy source used in heat meters located in independently heated or cooled spaces, where a graphene-based nano-composite is utilized instead of a battery. It generates electrical energy by leveraging the temperature difference between the heating water flowing through the meter and the ambient temperature, using the Seebeck effect of thermoelectricity. This innovation eliminates the need for batteries in heat meters by transforming the meter itself into a source of energy.

The present application relates to the technical field of gutta-percha cutters, and discloses a gutta-percha cutting control circuit, a method and a gutta-percha cutting device. In the control circuit, the working tip comprises a first conductor and a second conductor which are in contact with each other and form a thermocouple structure; a driving circuit is used to drive the working tip to heat based on a PWM driving signal; a main controller is used to acquire a current signal of the working tip and a thermoelectric electromotive force signal between the first conductor and the second conductor, to operate the current signal and the thermoelectric electromotive force signal, and to adjust and output the PWM driving signal to control the temperature of the working tip. The heat generating component is directly reused as a temperature sensing element by using the thermoelectric effect, without the need to additionally install a temperature control probe in the limited space of the working tip, and the temperature electrical signal is directly acquired from the heat source, thus fundamentally solving the problem of inaccurate temperature control caused by the fact that sensors cannot be installed at the front end of small medical devices due to insufficient space, and greatly improving the safety of clinical operations.

This invention discloses a synchronous testing device and method for heat exchange temperature field and structural deformation, belonging to the technical field of heat-fluid-structure interaction testing equipment for air valves. It includes a temperature rise section, a test chamber, a temperature drop section, and a tracer delivery device. The front end of the temperature rise section is connected to the test chamber, and a laser scanner is installed at the top of the test chamber to display tracer particles. An axial flow fan is installed inside the temperature drop section to drive airflow in circulation within the device. A heat transfer fluid is located within the temperature drop section, and the axial flow fan is immersed in the heat transfer fluid. The heat transfer fluid absorbs heat from the temperature rise section, increasing its temperature. The temperature rise section is used to raise the temperature of the flow field within the device, thereby simulating the actual working conditions of the air valve. In use, the axial flow fan converts heat into electricity through the thermoelectric effect to drive its operation. Since the speed increaser is connected to the axial flow fan, after being heated in the temperature rise section, the tracer particles flow through the heat exchanger air valve to display the specific state of the flow field.

This invention provides a heat dissipation device and electronic device with heat recovery, comprising: an assembly and an energy storage module. The assembly includes: a semiconductor cooling chip that forms a first low-temperature surface and a first high-temperature surface when current flows through it; a heat sink attached to the first low-temperature surface to reduce the local temperature near the heat sink; a fan mounted on the heat sink; a semiconductor thermoelectric module having a second low-temperature surface and a second high-temperature surface, used to convert the heat energy generated by the temperature difference between the second low-temperature surface and the second high-temperature surface into electrical energy based on the thermoelectric effect; a cooling block that maintains a low temperature and is attached to the second low-temperature surface; a first heat-conducting block attached to the first high-temperature surface and the second high-temperature surface, used to absorb heat from the first high-temperature surface and transfer it to the second high-temperature surface; and a charging port of the energy storage module connected to the output terminal of the semiconductor thermoelectric module for storing the electrical energy generated by the semiconductor thermoelectric module. This invention can improve energy efficiency.

The utility model relates to a waste heat recovery technical field, proposes a kind of spiral heat exchanger waste heat recovery device, comprising: cabinet;Arranged in the inner box of cabinet and the partition for supporting the inner box;The inside of the inner box is provided with heat conduction fin, for the inner box is divided into high-temperature warehouse and conduction warehouse;The inside of the high-temperature warehouse is provided with heat dissipation component, and the bottom of the conduction warehouse is provided with recovery component.The setting of spiral pipe and heat conduction fin, the heat of spiral pipe can be quickly conducted to conduction warehouse, improve heat exchange efficiency, and is divided into two areas, can avoid spiral pipe when damage and leakage appear, bottom conduction layer is not affected, through the setting of recovery component, the temperature inside conduction warehouse can be conducted to thermoelectric piece by conduction plate, under the action of thermoelectric effect, generate electric energy, then store electric energy, so that equipment can carry out waste heat recovery at any time, and the electric energy of the final product of waste heat, can be more freely used.

The embodiment of the present application relates to a kind of X-ray tube heat sink and the X-ray tube with the heat sink, the heat sink includes first heat dissipation module and second heat dissipation module;First heat dissipation module is set to the both ends of anode target surface, the first heat dissipation module is formed by the rotation of the anode target surface rotation magnetic field;Second heat dissipation module is set to the outside of the tube shell of the X-ray tube, the second heat dissipation module is inducted by cutting the magnetic force line of the rotation magnetic field to generate current to dissipate heat.The technical scheme of the embodiment of the present application, for the low efficiency problem existing in the heat transfer of the heat radiation or heat conduction mode in the prior art, heat is transferred to the outside of tube shell by thermoelectric effect and electromagnetic induction effect, which greatly improves the heat dissipation efficiency.Using thermoelectric effect and electromagnetic induction effect to realize the transfer of heat is not limited by radiation area and material, and the dissipation of heat and efficiency are improved.

This invention belongs to the field of polarization detection and information encryption technology, specifically a method for polarization detection and information encryption using thermoelectric thin films. The method includes: inducing a regular micro / nano stripe structure on the surface of a thermoelectric thin film using a femtosecond laser to obtain a polarization-sensitive detector unit or array; establishing a correspondence table between polarization angle and information symbol; the sender selecting a target polarization angle to illuminate the detector and recording the voltage signal, transmitting the voltage signal through a first channel, and physically delivering the detector through a second channel; the receiver calibrating the detector to fit a voltage-angle function relationship, deducing the polarization angle from the voltage value, and decoding to reconstruct the information. This invention operates based on the photothermoelectric effect, requires no external bias voltage, and features self-driving and wide-spectrum response characteristics; it achieves dual encryption of information through dual-channel distribution, and has broad application prospects in the fields of polarization detection and information security.