43results about How to "Rapid cooling and heating" patented technology

The invention provides an air conditioning compressor frequency control method. The method comprises that an air conditioning detects the indoor temperature T [indoor], wherein Pn= T [set]-T [indoor]; Pn is compared with a preset temperature difference, the air conditioning runs at the highest frequency when the temperature difference is large, and the work frequency of the compressor is corrected through an increment PID algorithm when the temperature difference is small, accordingly, rapid refrigeration and heating can be achieved. By the aid of the method, the frequency is controlled to be reduced stably through the PID algorithm, the temperature is kept at a 0.5-degree static difference and is kept at the set temperature finally, the problems of stopping caused by temperature over-regulation can be solved, the air conditioning runs stably, and the user experience is good; when the set temperature and the air speed are changed, the compressor running frequency can respond to changes of the temperature timely, and the frequency is improved and reduced effectively; moreover, the frequency can be adjusted according to the environment temperature, so that the air conditioning stable running can be guaranteed, and the temperature can be adjusted rapidly.

The invention discloses a hot pressing device for plastic bags. The hot pressing device is characterized in that a first heating module, a second heating module and a cooling module are sequentially mounted on the lower surface of a hot pressing rack along the axial direction of a production line, a circulating air pipe is arranged in the first heating module, one end of the circulating air pipe is connected with a connecting pipe, the other end of the circulating air pipe is connected with an air outlet pipe, the circulating air pipe is fixed in a heat exchanging block, a resistance heating plate is mounted on the lower surface of the second heating module and connected with a resistance heating power line, a row of axially-arranged semiconductor cold and hot plates is mounted in the cooling module, the cold ends of the semiconductor cold and hot plates face downwardly and contact with a heat transfer plate, the hot ends of the semiconductor cold and hot plates face upwardly and extend into an air cavity in the upper portion in the cooling module, one end of the air cavity is connected with an air inlet pipe, and the other end of the air cavity is connected with the connecting pipe.

The invention relates to a multifunctional thermal container. The multifunctional thermal container comprises a container body and a cover body, wherein a horizontal division plate is formed in the container body and divides the container body into an upper cavity and a lower cavity, and a metal container and heating elements are arranged on the upper side of the horizontal division plate, namely the upper cavity; a thermoelectric cooler is arranged on the middle portion of the lower cavity, and the thermoelectric cooler contacts the bottom of the metal container. The multifunctional thermal container not only has functions of heating, heat preserving and stewing, but also has functions of refrigerating and freshness retaining, the heat preservation sealing effect is excellent, and compared with the prior art, great improvement is achieved. The speed of heating and refrigerating is fast, and the response is agile. The multifunctional thermal container is convenient to carry and can be applicable to households, vehicles and the like, long-distance intelligent control can be achieved, and the practicability of the thermal container is greatly improved.

The invention provides an intelligent controller used for a direct current (DC) frequency-conversion air conditioner compressor and a technical proposal of the control method thereof; the hardware proposal comprises a rectifier filter circuit and a power module which are electrically connected sequentially; the rectifier filter circuit (220) is also electrically connected with a single DSP controller used as a core processing unit by a switch power supply (240); the single DSP controller is also respectively and electrically connected with the power module, a communication isolation circuit which is used for communicating with the indoor machine of the air conditioner, a fan driving circuit (280), and a temperature sampling circuit (270); the control method comprises the steps as follows: the control software is embedded in the DSP controller; by a control type of dual close-ring FOC no-sensor magnetic field vector, the current ring at the internal ring realizes the decoupling control to the driving current of the permanent magnetic synchronous motor of a compressor and indirectly controls the output torque of the motor; the speed ring at the external ring is used for controlling the working frequency of the compressor, thus not only meeting the stable requirement during fixed frequency but also meeting the dynamic response during the frequency conversion; and the control software comprises a primitive recursive function and a main interrupt function.

The invention discloses a heat exchange device and an energy-saving net used in the heat exchange device. The heat exchange device comprises an air suction opening and an air exhaust opening. Net-shaped energy-saving nets / a net-shaped energy-saving net are / is arranged in the position of the air suction opening and / or the position of the air exhaust opening. Each energy-saving net is made of ceramic powder and a base material, wherein the ceramic powder comprises a blank and glaze, and the base material is resin or rubber. Due to the fact that the energy-saving nets are arranged on one side or the two sides of the air suction opening and one side or the two sides of the air exhaust opening, the heat exchange efficiency of the heat exchange device can be improved, the power consumption of the heat exchange device is reduced, and the purpose of reducing energy consumption is achieved.

The invention discloses an air conditioner, comprising an outdoor heat exchanger, a compressor, a four-way valve, an indoor heat exchanger, and a throttling device. Flow devices are sequentially connected by pipelines to form a circulation path; the throttling device includes throttling passages matching different flow rates, and one of the throttling passages is a rapid cooling and heating passage; the air conditioner also includes an indoor ambient temperature sensor and a The temperature sensor is electrically connected to the controller; the controller gates the corresponding throttling channel according to the temperature change detected by the indoor temperature sensor. The invention also discloses a control method of the air conditioner. The invention not only satisfies the requirement of APF, but also satisfies the requirement of fast cooling and heating.

The present invention provides an air conditioner control method and an air conditioner for controlling the position of a moving part of the air conditioner that moves around a fan, and the moving part has a cooling position corresponding to the cooling state of the air conditioner and a heating state of the air conditioner Corresponding to the heating position, the air conditioning control method includes: detecting the indoor ambient temperature T 内 and outdoor ambient temperature T 外 ; When the air conditioner changes from power-off state to power-on state, or when the air conditioner is in standby state, according to the outdoor ambient temperature T 外 and indoor ambient temperature T 内 , control the moving parts to move to the cooling position or the heating position. The invention solves the problem that the reset time of the moving parts in the air conditioner in the prior art is relatively long.