Refrigeration heat pump type frostless air conditioning outdoor unit

Abstract

The invention discloses a refrigeration heat pump type frostless air conditioning outdoor unit. The refrigeration heat pump type frostless air conditioning outdoor unit includes an outdoor unit housing, an evaporator, a fan, an intermediate partition plate, a compressor and frequency conversion electrical control module space, a frequency conversion electrical control box, and a compressor. An air induction channel air inlet is arranged in a fan air outlet, a plane formed by the fan air outlet is used as a projection plane, projections of a plane formed by the air induction channel air inlet and the plane formed by the fan air outlet on the projection plane form an overlapped plane, an air induction channel passes through the intermediate partition plate and communicates with the compressor and frequency conversion electrical control module space; an air collection cover is arranged on the outdoor unit housing of the compressor and frequency conversion electrical control module space; the air collection cover is connected to a heating air supplying duct; air outflowing from the fan enters the compressor and frequency conversion electrical control module space through the air induction air channel, flows through the compressor and the frequency conversion electrical control box, and then enters the air collection cover to be conveyed to an evaporator air inlet side by the heating air supplying duct, and flows out. The refrigeration heat pump type frostless air conditioning outdoor unit can achieve frostless heating, can cool the compressor frequency electrical control module, is large in evaporation capacity and heating capacity, and is high in air conditioning energy efficiency.

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