42results about How to "To achieve the purpose of defrosting" patented technology

The invention discloses a bypass defrosting device with four-port valves, which comprises a compressor, a gas-liquid separator, a high-pressure reservoir, at least two four-port valves, at least two groups of heat exchanging components in a condensing side, and at least two groups of heat exchanging components at an air side. The first port of each four-port valve is connected with the vent of the compressor, and the second port of each four-port valve is connected with one end of each heat exchanging component at the condensing side, the other end of the heat exchanging component is connected with the high-pressure reservoir; one end of each heat exchanging component at the air side is connected with the high-pressure reservoir, the other end of each heat exchanging component at the air side is respectively connected with the third port of the corresponding four-port valve, the input end of the gas-liquid separator is connected with the fourth port of each four-port valve, and the output end of the gas-liquid separator is connected with the intakeport of the compressor. The bypass defrosting device with the four-port valves has small system pressure fluctuation during defrosting,higher reliability and stability, good defrosting effect, short defrosting time and simple structure, and can implement heating and defrosting at the same time.

The invention discloses a camera module and a defrosting method, which uses the existing focus coil in the voice coil motor to heat the lens to achieve the purpose of defrosting, not only does not need to change the existing mechanical structure of the camera module, but also It can avoid the electromagnetic interference generated during defrosting to the voice coil motor, so that the existing camera module can adapt to some harsh and humid natural environments.

The invention provides a high-temperature heat pump water heater, comprising a compressor, a four-way reversing valve, a water tank, a condenser arranged in the water tank, a throttling device and an evaporator, wherein the compressor, the condenser, the throttling device and the evaporator The throttling device includes an electronic expansion valve and a capillary arranged in parallel, and a real-time flow control device is provided at the liquid inlet end of the capillary. The real-time flow control device includes a solenoid valve and a controller, and the controller controls the solenoid valve. The opening frequency of the solenoid valve is used to adjust the refrigerant flow through the solenoid valve. Furthermore, the high-temperature heat pump water heater can adjust the refrigerant flow through the throttling device in real time by controlling the opening and closing of the electronic expansion valve and the solenoid valve. The control accuracy of the circulation flow and the operating efficiency of the compressor.

The invention relates to a rotary electromagnetic heat pump system which belongs to the electromechanical field and aims to solve the problem that a heat pump system in prior art has low heating efficiency in a low-temperature condition or a condition lacking of a low-temperature thermal source. The rotary electromagnetic heat pump system comprises a rotary electromagnetic generator, a solution heat exchanger, two throttling valves, a solution pump, an absorber, a four-way valve and two heat exchangers, wherein an outside gas inlet, an outside gas outlet, an outside medium inlet, an outside medium outlet, two working medium inlets and one working medium outlet are formed in the rotary electromagnetic generator; the rotary electromagnetic generator generates heat through rotation, so as to heat a working medium; the working medium enters the heat exchanger for heat exchange with an outside medium after being gasified and separated out, and enters the other heat exchanger for heat absorption from the outside medium after heat transmission to the outside medium; after the outside medium is cooled, a refrigerant is heated and enters the rotary electromagnetic generator after passing through the absorber and the solution heat exchanger, so as to be heated again. Moreover, the rotary electromagnetic generator also can be used for directly heating the outside medium. The rotary electromagnetic heat pump system provided by the invention is applicable to fields in need of heating and cooling of the outside medium.