Refrigerating and heating pump type frostless air conditioner outdoor unit

Abstract

The invention discloses a refrigerating and heating pump type frostless air conditioner outdoor unit. The refrigerating and heating pump type frostless air conditioner outdoor unit comprises an outdoor unit shell, an evaporator, a draught fan, a middle partition plate, a compressor and frequency conversion electric control module space, a frequency conversion electric control box and a compressor. The refrigerating and heating pump type frostless air conditioner outdoor unit is characterized in that an induced air flue is arranged at an air outlet of the draught fan, and the induced air flue penetrates the middle partition plate and communicates with the compressor and frequency conversion electric control module space; a wind collecting hood is arranged at the position, corresponding to the compressor and frequency conversion electric control module space, of the outdoor unit shelland connected with a heating air supply air pipe; outflow air of the draught fan enters the compressor and frequency conversion electric control module space through the induced air flue, flows through the compressor and the frequency conversion electric control box, and then enters the wind collecting hood to be conveyed by the heating air supply air pipe to the evaporator to flow out from the air inlet side. The refrigerating and heating pump type frostless air conditioner outdoor unit has the beneficial effects that frostless heating is achieved, heat dissipation and cooling are conducted on a compressor frequency conversion electric control module, the evaporation heating amount is large, and the energy efficiency of an air conditioner is large.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and only relates to a refrigeration heat pump type frost-free air conditioner outdoor unit. Background technique [0002] Existing refrigeration heat pump type air conditioners include an indoor unit and an outdoor unit. When cooling, the indoor unit is an evaporator, the indoor unit evaporates and absorbs heat, and the outdoor unit is a condenser, which condenses and releases heat; on the contrary, the indoor unit is a condenser, which condenses and releases heat. Heat release, the outdoor unit is an evaporator, which absorbs heat through evaporation. Condensers and evaporators are collectively referred to as heat exchangers. The outdoor unit of the air conditioner is usually divided into two spaces by a middle partition, and a space located on one side of the middle partition is provided with a fan and a heat exchanger, which is called the fan and heat exchanger space in the present i...

AI Technical Summary

Problems solved by technology

The defrosting of the four-way reversing valve needs to interrupt the heating, and the hot gas bypass defrosting will reduce the heat supply to the room. When the outdoor temperature is low, it will cause the compressor to appear liquid hammer phenomenon, reduce the performance of the compressor, and even damage the compressor. The defrosting effect of the electric heating element is good, and there will be no interruption or reduction of heating supply in the first two cases, but the defrosting of the electric heating element consumes a lot of power and the cost of defrosting is relatively high

In addition, when to start defrosting is also a problem that is difficult to control accurately. If defrosting is too late, the frost layer on the evaporator will be too thick, the air duct between the fins will be blocked, the air volume will decrease, the heating efficiency of the system will decrease, and the energy consumption will increase; Early, if there is no frost or a small amount of frost on the evaporator, the frequency of defrosting will increase, and the heating efficiency of the system will also decrease, increasing energy consumption.

Images