Frost-free outdoor unit of refrigerating heat pump type air conditioner

Abstract

The invention discloses a frost-free outdoor unit of a refrigerating heat pump type air conditioner. The frost-free outdoor unit of the refrigerating heat pump type air conditioner comprises an outdoor unit housing, an evaporator, a blower, an intermediate separating plate, a compressor and variable-frequency electrical control module space, a variable-frequency electric control box and a compressor. The frost-free outdoor unit of the refrigerating heat pump type air conditioner is characterized in that an induced air channel air inlet is formed in an air outlet of the blower; the plane formed by the air outlet of the blower is treated as a projecting surface, and the projections, on the projecting surface, of the plane formed by the induced air channel air inlet and the plane formed by the air outlet of the blower, can form an overlapped surface; an induced air channel passes through the intermediate separating plate to communicate with the compressor and variable-frequency electric control module space; an air collecting cover which is connected with a heating air supplying pipe is arranged on the outdoor unit housing section in the compressor and variable-frequency electric control module space; air from the blower can enter the compressor and variable-frequency electric control module space through the induced air channel; the air sequentially flows through the compressor and the variable-frequency electric control box and then enters the air collecting cover to be conveyed to an air feeding side of the evaporator through the heating air supplying pipe so as to be exhausted. The frost-free outdoor unit of the refrigerating heat pump type air conditioner has the characteristics of frost-free heating, dispersing heat of a variable-frequency electric control module and the compressor, and being high in evaporating heating capacity, and 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.

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