Abstract: A camera assembly coupled to a door of a refrigerator so as to have an unimpeded view of all goods in the refrigerator for the information of a user includes a locking base, a securing base, and a camera. The locking base is coupled to the door. The securing base is coupled to the locking base. The camera is received in the securing base. A refrigerator employing the camera assembly is also provided.

Abstract: A filter cleaning mechanism includes a sliding rail, a filter, a dust box, a cleaning device, and a driver. The filter is mounted to the sliding rail. The dust box is mounted to a bottom of the sliding rail. The cleaning device is mounted in front of the filter and above the dust box. The cleaning device includes a cleaning brush and a screen. The driver is mounted to a side of the sliding rail and is electrically coupled to the cleaning device. The driver moves up and down along the sliding rail. The cleaning brush and the screen move along with the driver up and down the sliding rail. The driver drives the cleaning brush to brush the filter. The screen blocks the front of the filter while the cleaning brush brushes the filter.

Abstract: A noise reduction device for reducing noise in refrigeration equipment includes at least one transition tube having a diameter gradually increasing from a capillary of the refrigeration equipment to an evaporator of the refrigeration equipment. The refrigerant liquid is circulated through the noise reduction device.

Abstract: A refrigerator includes a refrigeration system and a heating chamber powered by a part of the refrigeration process. The refrigeration system is a closed and recycling system which comprises a compressor, a first condenser, a three-way magnetic valve, a second condenser, at least one capillary pipeline, and an evaporator. The heating chamber is located around the first condenser, and the first condenser emits to the heating chamber heat which is emitted by the refrigeration system.

Abstract: A camera assembly coupled to a door of a refrigerator so as to have an unimpeded view of all goods in the refrigerator for the information of a user includes a locking base, a securing base, and a camera. The locking base is coupled to the door. The securing base is coupled to the locking base. The camera is received in the securing base. A refrigerator employing the camera assembly is also provided.