AC and photovoltaic DC dual-purpose refrigerator

Abstract

Disclosed is a dual-purpose refrigerator for alternating current and photovoltaic direct current. It is composed of three parts: the basic device of the refrigerator, the AC and DC dual-purpose power device, and the AC and DC dual-purpose power conversion control device. The basic device of a refrigerator is composed of six major parts: a car air-conditioning compressor, a condenser, an evaporator, a liquid storage dryer, a capillary tube, and a defrosting device. The AC and DC dual-purpose power device is composed of a series motor, a pulley, a belt, a tension pulley and an electromagnetic clutch on the compressor. The AC and DC dual-purpose power conversion control device is composed of an AC and DC dual-purpose output 12V switching power supply, an AC-DC power conversion switch knife, and a DC arc suppression switch knife. The AC and DC dual-purpose power conversion control device is divided into two parts: high voltage 220V and low voltage 12V. This kind of refrigerator uses the air-conditioning compressor on the car, which is small in size and high in efficiency and is not afraid of vibration. It uses photovoltaic direct current without arcing. It can also use ordinary alternating current, which is energy-saving and convenient. It is especially suitable for households that have built "direct-use photovoltaic power generation".

Description

technical field [0001] The invention relates to a household appliance, in particular to an AC and DC dual-purpose refrigerator. Background technique [0002] At present, known household refrigerators are all powered by alternating current, which is not safe and cannot be used in areas without electricity. With the system "ZL201220245052.1 is now referred to as "direct-use photovoltaic power generation" DC voltage 220V, at present, there is no AC-DC dual-purpose refrigerator on the market, and the development of AC-DC dual-purpose refrigerator is the need of the development of the situation. The air conditioner compressor on the car is driven by the engine. The air conditioner compressor on the car is small in size and high in efficiency, and it is not afraid of vibration. If the air conditioner compressor in the car is powered by 220V photovoltaic DC power to the DC motor, the DC motor To drive the compressor on the car, but in the test, it was found that the air-conditioni...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of contact burnout and adhesion caused by the arcing of the switch when using a high-power DC motor in the current automotive air-conditioning compressor, this problem was solved with a switch knife. In order to find an AC and DC dual-purpose motor, after many research tests It is found that in the existing AC motor, the rotor is a coil, and the stator is a permanent magnet and an excitation. When using 220V DC, although some parts are available, it is more troublesome. Finally, a single-phase series motor using AC is determined. Single-phase The series excitation motor is an AC and DC dual-purpose motor with different power sizes, suitable for large and small refrigerators

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