An air-conditioning indoor unit with functions of supplying fresh air and inducing wind screen

Abstract

The invention discloses an air conditioning indoor unit with fresh air supplying and air-curtain inducing functions. The air conditioning indoor unit is characterized in that an upper air opening is formed in a top plate of the body of the indoor unit; a lower air opening is formed in the lower part of the front vertical surface of the body; a long and narrow air-curtain air outlet is formed in the upper part of the front vertical surface of the body in the horizontal direction; a heat exchanger is placed in the body in an inclining way; a bidirectional air-supply cross-flow fan is arranged in the body and located below the upper air opening and at the top of the heat exchanger; a heat exchange panel is arranged on the front vertical surface of the body and located between the lower air opening and the air-curtain air outlet; and the air-curtain air outlet communicates with an air pump at the bottom of the body. An external fresh air pipeline is arranged; when the air conditioning indoor unit supplies heat, fresh air is introduced by the air pump, is mixed with a proper amount of return air heated by the heat exchanger and then gets out from the air-curtain air outlet via an air-curtain air-supply pipeline; and when the air conditioning indoor unit supplies cold, fresh air is taken in by the cross-flow fan, and the air pump doesn't operate. The air conditioning indoor unit adopts a humanized air-supply way of upper cooling, lower heating and fresh air supplying, the heat exchange panel assists heat supply, and the air conditioning indoor unit is silent, comfortable and efficient and saves energy.

Description

technical field [0001] The invention relates to an air-conditioning system terminal device, more specifically to an indoor terminal device of a heating and cooling air conditioner with energy saving, environmental protection and comfort. Background technique [0002] At present, coal-fired or oil-fired heating methods are widely used in northern my country and some southern regions in winter. Combustion of fossil fuels, especially non-centralized combustion, easily produces a large amount of pollutant emissions, and the efficiency of combustion and heating is low, resulting in waste of resources and serious environmental pollution. [0003] In order to solve the above problems, the Chinese government is vigorously promoting heat pump heating, a clean and efficient heating method. However, due to the low ambient temperature in winter in northern my country, the temperature of hot water produced by the ordinary single-stage compression heat pump system is not high enough, and ...

AI Technical Summary

Problems solved by technology

However, due to the low ambient temperature in winter in northern my country, the temperature of hot water produced by the ordinary single-stage compression heat pump system is not high enough, and the efficiency of the two-stage compression system is relatively low, which has a great impact on the indoor unit of the air conditioner with small temperature difference heat transfer. needs

[0004] In the current heat pump heating scheme, fan coil units are generally used as the end of the air conditioner. The fan coil units are installed on the ceiling and supply air upwards. In order to meet the heat exchange requirements, the air volume is designed to be large and the wind speed is high. The low temperature gradient cannot meet the comfort requirements of the human body for "cold head and hot feet" in winter and summer at the same time

[0005] In recent years, heat pump radiant heating technology has been proposed and applied, including floor, ceiling, wall or vertical radiant heat transfer, etc. The radiant heat transfer scheme has better comfort in winter heating, but the disadvantage is that it cannot take into account both heating and heating. Cold difference and comfort, and need to set a larger radiation heat transfer area

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