840 results about "Thermostat" patented technology

The invention relates to a paraffin type thermostat. The paraffin type thermostat comprises a main valve 1, a cover and seal gasket assembly 2, an upper support 3, a rubber pipe 4, a valve seat 5, a vent hole 6, a lower support 7, paraffin 8, an inductor 9, a bypass valve 10, a central rod 11 and a spring 12. The upper support, the lower support and the valve seat of the thermostat are riveted into a whole. The upper end of the central rod is fixed to the center of the upper support. The lower portion of the central rod is inserted into a central hole of the rubber pipe. The lower end of the central rod is conical. A cavity between the rubber pipe and a shell of the inductor contains the paraffin. The upper portion and the lower portion of the shell of the inductor are provided with the main valve and the bypass valve which are in linkage. The vent hole is formed in the main valve. The paraffin type thermostat is high in heat conductivity and guarantees that an engine cannot be excessively cold.

The application discloses a multi-model adaptive low-temperature valve sealing performance testing device and method, and belongs to the technical field of valve detection. The device comprises: a first upper end cover of a low-temperature thermostat, wherein a to-be-tested low-temperature valve is installed on the first upper end cover through a valve support device; the valve support device is in flexible sealing cooperation with a bellows through an adjusting screw, so that the installation height and centering of the to-be-tested low-temperature valve are controlled, and low-temperature valves of different specifications are adapted; the low-temperature thermostat surrounds a first cold screen and a second cold screen; the bottom of the to-be-tested low-temperature valve is connected with one end of a cold-lead bridge through a pipe clamp and is surrounded by the first cold screen; a GM refrigerating machine comprises two-stage cold heads arranged in the low-temperature thermostat; the second cold screen surrounds the two-stage cold heads; the other end of the cold-lead bridge is connected with the two-stage cold heads; three helium supply devices are connected with the inlet and outlet of the to-be-tested low-temperature valve and the low-temperature thermostat respectively; and a vacuum pump unit is connected with the low-temperature thermostat. The application realizes rapid adaptation and accurate testing of low-temperature valves of multiple models.

The invention provides a water-cooled magnet magnetic field ripple shielding system, which belongs to the technical field of water-cooled magnets and comprises a thermostat and a superconducting block, the superconducting block is positioned in a constant-temperature cavity of the thermostat and is coaxial with a room-temperature hollow cavity in the center of the thermostat, liquid nitrogen is injected into the constant-temperature cavity, and when the superconducting block enters a superconducting state, the superconducting block is separated from the constant-temperature cavity. The sum of the induced magnetic flux variation of the water-cooled magnet power supply in the annular cavity of the superconducting block and the magnetic flux variation generated by the induced current of the superconducting block is zero, and the magnetic flux in the room temperature hollow cavity is in a steady state; the invention further provides a using method of the water-cooled magnet magnetic field ripple shielding system. Magnetic field ripples in an experiment sample space during a water-cooled magnet field stabilization experiment are shielded, the magnetic field stability of a water-cooled magnet magnetic field in the sample experiment space is ensured, the quality of the water-cooled magnet magnetic field is improved, and the signal-to-noise ratio of an experiment measurement signal is improved.

The invention relates to the technical field of real-time control software, and discloses a multi-sensor-based oven constant temperature control system and method, and the system comprises a multi-sensor detection module, a temperature control module connected with the multi-sensor detection module through a CNA bus, and an air circulation module connected with the multi-sensor detection module and the temperature control module. And the safety protection module is connected with the multi-sensor detection module and related control devices of the oven. The method corresponds to the system. According to the oven constant temperature control system and method based on the multiple sensors, through cooperation of all the modules and steps, the temperature detection accuracy and comprehensiveness are improved, the oven environment and actual food heating are both considered, meanwhile, dynamic intelligent temperature control is achieved, environment interference is reduced, temperature overshoot and lag are avoided, different food materials are adapted, in addition, airflow distribution is optimized, and the energy consumption is reduced. The temperature uniformity is improved, the safety and the reliability are enhanced, all-directional protection is formed, and stable operation of the system is guaranteed.

The utility model provides a low-temperature heat exchanger and a low-temperature thermostat. The low-temperature heat exchanger comprises a heat exchanger core, a heat exchanger shell and a cold head. The heat exchanger core is arranged in the heat exchanger shell, and the cold head is connected with the heat exchanger shell. The heat exchanger core internally comprises a first flow channel composed of a plurality of holes extending in the axial direction, and an inlet of the first flow channel is used for guiding in cooling fluid. The surface of the heat exchanger core comprises a plurality of protruding structures, the surface of the heat exchanger core and the inner surface of the heat exchanger shell form a second flow channel, and an outlet of the second flow channel is used for guiding out cooling fluid. The heat exchanger core comprises a through hole, and the through hole communicates with an outlet of the first flow channel and an inlet of the second flow channel. According to the structure of the first flow channel and the second flow channel in the low-temperature heat exchanger, the heat exchange area between the refrigerating fluid and the low-temperature heat exchanger can be increased, the heat exchange temperature difference between the refrigerating fluid and the low-temperature heat exchanger can be reduced, and the heat exchange efficiency of the low-temperature heat exchanger is improved.

Smart home devices may use a technique known as “power stealing” in order to steal power from an external environmental system. For example, thermostats may steal power from an HVAC system. Different algorithms and techniques may be used for efficiently stealing power from the HVAC system, each of which may provide different levels of power to the thermostat at different times. The smart home device may test an external system to determine which power stealing methods are compatible and calibrate various power stealing parameters. A calibration routine may sample at a plurality of discrete intervals while increasing a test load to determine a maximum current limit and an optimal power stealing method.

The invention relates to the technical field of automatic control and constant temperature metering testing, and provides a thermostat PID control method, device and equipment and a medium, and the method comprises the steps: obtaining the current collection moment temperature of a thermostat, and the first number of historical collection moment temperatures; determining temperature deviation information according to the current acquisition moment temperature and a first number of historical acquisition moment temperatures; determining gain information at the current acquisition moment according to the temperature deviation information; and determining a control amount of heating power of a heater inside the thermostat according to the gain information and the temperature deviation information. According to the invention, on the premise of ensuring the stability of the system, rapid convergence and high-precision steady-state maintenance of the thermostat are realized through a variable gain strategy.

The invention relates to the technical field of engine heat management, and discloses a thermostat stroke self-adaptive control method. According to the method, multi-source working condition signals such as engine coolant temperature time sequence data, a load change rate and cylinder vibration spectrum characteristics are collected, and working condition intention vectors representing target temperature adjustment requirements and thermal management constraint conditions are generated through working condition intention analysis; and a thermostat dynamic response model containing a valve element displacement field equation, a cooling medium flow resistance characteristic function and a thermal inertia delay parameter is constructed, a target stroke control instruction is calculated and executed in combination with the working condition intention vector, and meanwhile the actual displacement track of the valve element and the cooling medium flow change rate are monitored. And generating a response efficiency evaluation index based on the displacement deviation value and the flow change rate, correcting a thermal inertia delay parameter of the model according to the response efficiency evaluation index, updating a control instruction, and forming a closed-loop self-adaptive adjustment mechanism to adapt to the complex working condition of the engine and optimize the thermal management effect.

The invention discloses a long-time emergency hydrogen-lithium hybrid power generation platform, which comprises a fuel cell stack for generating electric energy through electrochemical reaction of hydrogen and air; the air supply subsystem provides stable airflow through an air compressor and an electric control valve, and the hydrogen supply subsystem realizes hydrogen circulation through a hydrogen storage tank and a reflux pump; the thermal management system is used for controlling the temperature of the fuel cell stack through a water pump and a radiator based on liquid water circulation and dynamically adjusting water flow through a thermostat and a main radiator; the power electronic system activates the fuel cell stack and the lithium battery to work cooperatively through the FCU, monitors the state of the fuel cell stack in real time, and adjusts the cooling efficiency; the control and data monitoring system collects temperature, pressure and voltage parameters in real time through multiple sensors. According to the invention, through collaborative optimization of hydrogen energy and lithium batteries and key equipment innovation, an efficient, reliable and zero-carbon distributed energy system is constructed, and technical support is provided for research of long-time emergency supply insurance power generation vehicles.

The invention discloses an optical thermostat with comprehensive vibration reduction and low-temperature in-situ displacement functions, which adopts upper and lower opposite vibration absorbers and a large-mass base to realize first-order to second-order inertial vibration absorption, and further realizes thorough decoupling with an optical platform in a suspension type non-contact manner, and the vibration transmissibility can be reduced to be less than 10%. Resonant frequencies of two systems (a sample table system and a cold head system) are designed to achieve vibration decoupling. The technical problems that in the prior art, the high-grade vibration isolation capacity is insufficient, refrigerator noise is easily coupled to a measuring light path, the low-temperature in-situ precision displacement capacity is lacked, and the contradiction between heat isolation, convenience and cost is difficult to balance can be solved. Under the support of a conventional GM refrigerator, the comprehensive requirements of ultralow basic vibration, strong decoupling of a measurement light path, low-temperature in-situ micron-sized displacement, convenient sample replacement and efficient refrigeration / thermal control are met at the same time.

The invention provides a fuel cell cooling system, and relates to the technical field of fuel cells. The fuel cell cooling system comprises the following modules: a cooling cycle control module, a heat dissipation management module, a hydrogen pretreatment module, a hydrogen cycle regulation and control module, a gas-liquid treatment module and a heat recycling module, and the cooling cycle control module is used for dynamically adjusting the rotating speed of a cooling water pump by adopting a proportional integral differential algorithm on the basis of the pile temperature monitoring data, realizing closed-loop control of the temperature of cooling liquid through a PTC heater, establishing a three-loop cooperative control mechanism in combination with opening adjustment of a thermostat, and generating optimized flow parameters. A three-loop flow matching mechanism is established by dynamically adjusting the rotating speed of a cooling water pump and cooperatively controlling a PTC heater, the pile temperature control precision is remarkably improved, the radiator structure is optimized by adopting computational fluid mechanics, and the rotating speed of a fan is dynamically adjusted in combination with fuzzy control, so that the energy consumption is reduced while the heat dissipation efficiency is improved; and constructing a pressure-temperature coupling model to optimize a hydrogen heating curve.

A telecommunications cabinet can include a base cabinet structure, a front door, an air intake assembly, an exhaust damper, a series of batteries, a telecommunications unit, and a battery dehumidification system, with the front door, the air intake assembly, the exhaust damper, the batteries, the telecommunications unit, and the battery dehumidification system all carried on or in the base cabinet structure, as the case may be. The battery dehumidification system can include at least one fan and at least one of a thermostat and at least one environmental (temperature and / or humidity) sensor. The thermostat and / or one or more environmental sensors can generate a corresponding operational signal, the one or more corresponding operational signal configured to selectively control the operation of the one or more fans to selectively force at least a portion of the waste heat from the telecommunications unit towards the battery.

The invention relates to a modularized and anti-noise variable-temperature electrical characterization test system and method, and the system comprises a vacuum pump, a cryostat, a refrigerator, a temperature controller, an electrical characterization system, and a computer. A sample table, a cold head, a heater and a temperature sensor are arranged in the cryostat; the vacuum pump is connected with the low-temperature thermostat through a vacuum pipeline and is used for adjusting the air pressure in the low-temperature thermostat; the refrigerating machine is connected with the cold head and is used for cooling the sample table; the temperature controller is used for collecting the temperature detected by the temperature sensor and controlling the heater; the computer is used for collecting data acquired by the temperature controller and the electrical characterization system and sending a control instruction to the temperature controller and the electrical characterization system; and the electrical characterization system is connected with the test sample on the sample table and is used for carrying out electrical characterization test on the test sample under modular configuration. According to the invention, the anti-noise capability in the data acquisition process can be improved.

The embodiment of the invention discloses a thermal management system of an engine and a calibration method and a thermal management method of the thermal management system. An electronic thermostat is arranged, a first valve is arranged at a large circulation inlet of the electronic thermostat, a second valve is arranged at a small circulation outlet of the electronic thermostat, and a third valve is arranged at a large circulation outlet; the control module controls the circulation state of the heat management system at least according to the engine water temperature and controls the first valve, the second valve and the third valve to be closed in the microcirculation state. In the small circulation state, the first valve and the third valve are controlled to be closed, and the second valve is controlled to be opened; in the large circulation state, the first valve and the third valve are controlled to be opened, and the second valve is controlled to be closed. And through the use of the electronic thermostat, the opening or closing speed of the valve is increased, heat energy waste is reduced, and the heating efficiency is improved. Moreover, the heat management system can be controlled to work in a microcirculation state or a small circulation state, so that the circulation path is shortened, and the heating efficiency is further improved.

An embodiment of a method of controlling a climate control system includes receiving an analog conditioning call from a thermostat. In addition, the method includes selecting a target discharge temperature for an airflow output by the climate control system to the interior space based on the analog conditioning call received from the thermostat. Further, the method includes adjusting a speed of a compressor of the climate control system among to a plurality of different compressor speeds based on the target discharge temperature.

The invention relates to the technical field of industrial automation control, in particular to an automation control device based on a neural network algorithm model, which comprises a signal acquisition module, a neural network control module, a driving output module and an online learning module, one end of the signal acquisition module is detachably connected with an industrial field sensor, the other end of the signal acquisition module is electrically connected with the neural network control module and the online learning module respectively, and the signal acquisition module is used for acquiring a process variable PV of a controlled object and a set value SP set by a user in real time; according to the method, a nonlinear time-varying system can be effectively adapted without establishing an accurate mathematical model of a controlled object through the nonlinear mapping characteristic of the multi-layer feedforward neural network. Experiments prove that in a thermostat temperature control scene, compared with a traditional PID controller, the control precision of the device is improved by 35%, the steady-state error is smaller than or equal to + / -0.2 DEG C, the overshoot is smaller than or equal to 3%, and the steady-state error of + / -0.5 DEG C and the overshoot of 8% of the PID controller are far better.

The invention belongs to the technical field of mechanical test devices, and provides a multifunctional rock joint full-shear-seepage coupling test system comprising a heating module, the multifunctional rock joint full-shear-seepage coupling test system comprises a constant-temperature box, the constant-temperature box is internally provided with a confining pressure generating mechanism for injecting water into the constant-temperature box; the shearing assembly comprises an upper shearing box and a lower shearing box which are arranged in the constant-temperature box, the top and the bottom of the sample are clamped in the upper shearing box and the lower shearing box respectively, loading mechanisms are arranged between the upper shearing box and the constant-temperature box and between the lower shearing box and the constant-temperature box, and the loading mechanisms are used for enabling the upper shearing box and the lower shearing box to longitudinally clamp and transversely shear the sample; the high-temperature loading assembly is arranged in the constant-temperature box and is used for heating water in the constant-temperature box; a crack is formed in the middle of the sample, and the seepage assembly is used for enabling seepage water to flow through the crack of the sample to form crack seepage. According to the invention, comprehensive simulation of a'heat-force-water 'multi-field coupling environment where underground deep rock joints are located is realized in one system.

The utility model relates to the technical field of color paste cooling, and particularly discloses a color paste cooling constant temperature device which comprises a box body, a feeding port is formed in the upper end of the box body and fixedly connected with the box body, and a material guide pipe is arranged below the feeding port and located in the box body; the bracket is positioned below the box body and is fixedly connected with the box body; the controller is located on the right side of the box body; the cold water circulation mechanism is located on the left side of the box body, and the cold water circulation mechanism can reduce the temperature of the color paste in the box body; the liquid nitrogen cooling mechanism is located on the right side of the box body, the liquid nitrogen cooling mechanism can achieve a remarkable compensation cooling effect, efficient cooling of color paste is achieved under the combined action of the cold water circulation mechanism and the liquid nitrogen cooling mechanism, the color paste can be evenly acted, and the cooling efficiency is improved by combining the two modes of cold water circulation and liquid nitrogen cooling. The cooling intensity can be flexibly adjusted according to production requirements, and the cooling requirements of different color pastes are met.

The invention discloses a semi-physical thermal management development and test system based on a fuel cell stack model, which comprises a cooling loop module, a stack simulation module and a controller module, adopts a hybrid architecture of a virtual stack and a real thermal loop, simulates and calculates the net heating power of the stack by a heat source net heating power model, and transmits the net heating power to a controllable heat source; the controllable heat source spontaneously generates heat and rises temperature according to net heating power, galvanic pile heating is simulated, meanwhile, the cooling loop module is added to one side of the controllable heat source, the controllable heat source and the cooling device conduct heat exchange, and through cooling liquid in the cooling loop module and by adjusting the opening degree proportion of the two outlet ends of the thermostat, the temperature of the galvanic pile can be adjusted. The flow and temperature of the cooling liquid are controlled by controlling the flow of the cooling liquid flowing through the radiator and the heater respectively and controlling the operating power of the radiator and the circulating water pump, and the opening degree of the flow resistance valve is adjusted according to the inlet cooling liquid flow of the cooling device so as to control the flow resistance of the cooling liquid and simulate the operation of a thermal management system of the whole fuel cell stack.

The utility model relates to a radiator constant temperature control valve which comprises a valve body which is in a vertical tubular shape, and a medium outlet is formed in the side wall of the lower portion of the valve body. The valve element is coaxially arranged in the valve body and is in rotary sealing fit with the valve body, a valve element cavity is formed in the bottom of the valve element, a valve element outlet used for communicating the valve element cavity with the medium outlet is formed in the cavity wall of the valve element cavity, and the vertical width of the valve element outlet gradually changes in the circumferential direction of the valve element; the flow adjusting piece is fixedly connected to the top end of the valve element and is in running fit with the inner wall of the valve body, and the top of the flow adjusting piece is located outside the valve body; the protective cap is in an inverted cup shape, and a matched detachable fixed connection structure is arranged between the inner wall of the protective cap and the outer wall of the upper part of the valve body; and a matched insertion positioning structure is arranged between the bottom of the hand wheel and the top of the flow adjusting part. The opening degree and the flow Kv value of the valve are controlled respectively, the accuracy of valve flow adjustment can be effectively improved, the opening degree of the valve can be automatically adjusted according to the environment temperature, and it is guaranteed that the environment temperature is basically constant.

Radiator thermostat (1) for a radiator valve (2) of a heating system, comprising: an actuator (6) movable in a primary direction (10) for temperature-dependent actuation of the radiator valve (2) with an actuating force, an actuator element (11) movable in a secondary direction (14), a mechanism (38) for mechanically coupling the actuator (6) with the actuator element (11) and for transmitting the actuating force from the actuator element (11) to the actuator (6), such that the movement in the secondary direction (14) of the actuator element (11) causes the movement in the primary direction (10) of the actuator (6) and the secondary direction (14) of the movement of the movable actuator element (11) is oriented at an angle between 30° and 150° to the primary direction (10) of the movement of the movable actuator (6), an actuator (15) for the indirect or direct movement of the actuator element (11),a housing (28), a fastening device (35) for fastening to a counter-fastening device (5) of the radiator valve (2), wherein the mechanism (38) comprises a pull and / or push rod (39) for transmitting the actuating force essentially as a pulling force and / or pushing force in the pull and / or push rod (39).

This invention discloses a downconversion fluorescence thermometry method based on bilinear mode, implemented using a hardware system. The hardware system includes a 280nm light-emitting diode, two convex lenses, and a Tb... 3+ :Cs2Na 0.9 Ag 0.1 The system comprises InCl6 temperature-sensing material, a grating spectrometer, an oscilloscope, a signal generator, a computer, and a thermostat. The specific implementation steps are: signal excitation and acquisition; temperature calibration; actual temperature measurement; and high measurement accuracy: VPR mode linear correlation coefficient R² ≥ 0.998, FL mode linear correlation coefficient R² ≥ 0.992, avoiding measurement errors introduced by the exponential bias or correction term of traditional FIR technology, thus fundamentally improving temperature measurement accuracy.

The utility model discloses a wall control constant temperature controller which comprises an adjuster and a temperature sensing bulb which are integrally designed, a connecting pipe communicated with the interior of the temperature sensing bulb is arranged on the lower side of the temperature sensing bulb in a penetrating mode, the other end of the connecting pipe is connected with a controller, and the controller comprises a control pipe communicated with the connecting pipe. A movably telescopic first corrugated pipe is arranged in the control pipe, a first pressing rod is arranged in the first corrugated pipe, and the adjuster comprises an overpressure rod located in the temperature sensing bulb. The utility model has the advantages that the controller is additionally arranged, and the temperature wrap and the regulator are simultaneously far away from a heat source.

1. The name of the design product: thermostat timer switch. 2. The use of the design product: switch for controlling the working time, temperature and gear of electric heater. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view 1.

This utility model discloses an Internet of Things (IoT) constant temperature device, relating to the field of constant temperature technology, comprising: a temperature sensor, a heating / cooling module, a main control unit, and a wireless communication module; the temperature sensor is used to monitor the ambient temperature in real time; the heating / cooling module is used to regulate the ambient temperature; the main control unit is electrically connected to the temperature sensor and the heating / cooling module, and is used to control the operating status of the heating / cooling module based on temperature feedback data; the wireless communication module is connected to the main control unit, and is used to transmit data with a cloud server or user terminal. This invention solves the technical problems of existing technologies that lack awareness of environmental usage status and cannot adjust as needed, leading to energy waste.

A heat exchanger for a fuel cell power plant system may include a first loop and a second loop. For the first loop, a first coolant may be passed through a fuel cell stack, a thermostat, a first portion of a first plate of the heat exchanger, and a fuel cell pump. For the second loop, a second coolant may be passed through a second portion of the first plate of the heat exchanger.

A thermostat with voltage and current sensing capability is coupled directly to an HVAC unit and provides low latency failure detection and control using an on-board CPU. The thermostat can be configured to detect failure modes using current and voltage sensing and to make autonomous decisions to control the HVAC in response to such measurements.

The invention discloses a multi-channel constant temperature box and a temperature control system thereof, and relates to the field of software control, and the multi-channel constant temperature box comprises an isolation storage end which is used as an article placement carrier, forms a plurality of article placement areas which operate independently through physical separation, and obtains power supply and networking permissions; the attribute reading module is used for automatically identifying and reading attribute information of article types, storage requirements and initial states of the placed articles; the parameter analysis module is used for automatically analyzing and generating corresponding optimal temperature storage parameters based on the article attribute information; the temperature regulation and control module is used for carrying out independent temperature control on each article placement area according to the temperature storage parameters generated by the parameter analysis module; a reinforcement learning algorithm is adopted to construct an anomaly recognition model, independent regulation and control of multiple channels are ensured, the storage precision and efficiency are remarkably improved, and in a storage scene, the temperature can be adjusted in real time, human errors are reduced, and high-value articles are protected from being affected by degradation.

The present application provides a thermostat and a manufacturing method thereof, which can easily assemble shell members constituting a shell and reduce manufacturing cost. The thermostat comprises a shell (1), a thermoelectric element (17) moving in an axial direction in response to the temperature of a cooling liquid, a valve body (15) opening and closing a communication part of a first flow passage (21) and a second flow passage (7) by moving away from and approaching a valve seat (20b) provided inside the shell in response to the movement of the thermoelectric element, and a force applying member (16) applying force to the valve body to the valve seat side. The shell comprises a first shell member (2) having a main body (20), the first flow passage and the second flow passage, and a second shell member (3) fastened to the first shell member by rotating in a circumferential direction of the first shell member and having a third flow passage (22).

The invention relates to a heating / cooling device for offices, in particular for offices having multiple workstations, wherein the heating / cooling device has at least one first heating / cooling element (1) per room, which can be connected to a central heating / cooling circuit in the building and is provided with a respective associated control unit (2) with a thermostat. A first heating / cooling element (1) which can be associated with a workstation is provided for each workstation in the room, wherein the first heating / cooling element (1) comprises two heating / cooling registers (3, 4) which can be connected to the central heating / cooling circuit and which are arranged parallel to one another, wherein a heating / cooling register (3) is arranged horizontally in the floor region below a desktop (5) and the second heating / cooling register (4) is arranged at a parallel distance from same directly below the desktop (5) or within the desktop (5).