4results about How to "Raise the suction temperature" patented technology

The invention discloses an electric vehicle thermal management system which comprises a refrigerant management module, a passenger compartment thermal management module, a battery pack thermal management module, an electric drive thermal management module and a low-temperature radiator module, wherein the passenger compartment thermal management module, the battery pack thermal management module, the electric drive thermal management module and the low-temperature radiator module are communicated with a twelve-way valve. The refrigerant management module is provided with a hot gas bypass branch, the hot gas bypass branch is provided with an electromagnetic valve with the opening degree capable of being controlled, and connection or disconnection between the refrigerant module and the passenger compartment heat management module, the battery pack heat management module, the electric drive heat management module and the low-temperature radiator module and the working mode of the refrigerant management module are completed by combining a twelve-way valve. High integration of an electric automobile heat management system can be achieved, normal work of a heat pump under the extremely low temperature working condition is guaranteed, the heating capacity is improved, and the problem that a compressor is frequently started and stopped during refrigeration is solved. The invention further provides a control method of the electric vehicle thermal management system.

The application relates to a liquid return prevention distillation system, belonging to the technical field of waste liquid treatment, which is characterized in that a phase change energy storage tank is arranged between an evaporation kettle and a condenser, the first electromagnetic valve and the third electromagnetic valve are opened, and the second electromagnetic valve is closed before the compressor is started, the phase change energy storage tank is in an evaporation section, the suction temperature is improved, and the liquid return phenomenon is avoided, the second electromagnetic valve is opened, the first electromagnetic valve and the third electromagnetic valve are closed after the evaporation kettle boils, the phase change energy storage tank is in a condensation section, the phase change energy storage tank absorbs heat, energy storage for the next start after discharge is facilitated, and quick start is realized.

A large temperature span precise cold and hot circulation system and its control method, the system comprises a compressor, a condenser, a gas-liquid separator, a semiconductor refrigerator, a liquid storage tank, a gas storage tank, an ejector, an evaporator, etc. Through the coordinated control of the semiconductor refrigerator, the solenoid valve, the gas storage tank, the liquid storage tank, and the one-way valve, the separation, storage and reorganization of the mixed working fluid are realized, and the large temperature span operation is realized. The heat pipe heat exchanger is used to transfer the cold capacity at the evaporator outlet to the gas storage tank, thereby improving the liquefaction rate of the low-boiling-point working fluid and improving the energy utilization rate. The second gas-liquid separator and the third semiconductor refrigerator are coupled, and the proportion of the liquid phase components in the second gas-liquid separation is controlled by controlling the current of the semiconductor refrigerator, and the evaporation temperature of the system is accurately adjusted to achieve precise temperature control. The introduction of the ejector can reduce the irreversible loss of the system, increase the suction pressure, and reduce energy consumption. The present invention can realize precise temperature control over a large temperature span from high temperature to deep low temperature, and solve the problems of poor stability, low precision, and high energy consumption of the traditional temperature control system.

The invention provides a control method and device, a medium, electronic equipment, an outdoor unit and an air conditioning system.The control method comprises the following steps that when the outdoor unit runs in a heating mode and receives an operation command that a user turns off part of indoor units or turns down the air gear, the outdoor environment temperature T < outer ring > is obtained; when the obtained outdoor environment temperature Touter ring is larger than or equal to the preset heating pressure relief outer ring temperature T1, it is judged that pressure relief judgment control needs to be conducted; otherwise, judging that the system does not need pressure relief treatment and runs normally; when the outdoor unit operates in the refrigeration mode, the outdoor environment temperature Touter ring is obtained; when the obtained outdoor environment temperature Touter ring is smaller than or equal to the preset low-temperature starting environment temperature T2, it is judged that the outdoor temperature is low, and low-temperature starting preheating is conducted; otherwise, judging that the outdoor temperature is relatively high, and performing normal operation. The method is used for air supply control or pressure relief control under the refrigerating and heating conditions, stable and reliable operation of the system is ensured, and the low-temperature operation reliability is improved.