Energy-saving air conditioner

Abstract

The invention provides an energy-saving air conditioner. The overall performance of the air conditioner is enhanced by controlling the supercooling degree / superheating degree of the air-conditioning system, and simultaneously, the reliability of the air conditioner is improved. The air conditioner comprises a control system, an outdoor air-conditioning unit, an indoor air-conditioning unit and a plurality of refrigerant tubes connected between the outdoor air-conditioning unit and the indoor air-conditioning unit; the outdoor air-conditioning unit comprises a compressor, an outdoor unit heat exchanger and a throttling device, which are connected through a plurality of refrigerant tubes; the indoor air-conditioning unit comprises an indoor unit heat exchanger; the outdoor air-conditioning unit is provided with a supercooling degree increaser, which comprises a throttling mechanism and a heat exchanger mechanism; the supercooling degree increaser is connected with one of the refrigeranttubes of the outdoor air-conditioning unit, and the refrigerant tube connected with the supercooling degree increaser is branched into an auxiliary branch and a main flow passage; the throttling mechanism is arranged on the auxiliary branch, the auxiliary branch and the main flow passage are jointed at the position of the heat exchange mechanism and carry out heat exchange; and the auxiliary branch is connected with the low-pressure side of the compressor.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a novel energy-saving air conditioning device capable of increasing the degree of supercooling / superheating. Background technique [0002] According to the pressure-enthalpy diagram of the air-conditioning system, it can be seen that the greater the degree of subcooling, the greater the cooling capacity of the air-conditioning system. There are two main types of devices used in air-conditioning to increase the degree of supercooling. One is to use cold water from the outside. Realization, in practical application, due to the addition of a water circuit, it is inconvenient for users to use and install, so it is rarely used in ordinary air-conditioning systems. The second is to control the subcooling and superheating of the whole system through the temperature difference between the high-pressure pipe and the low-pressure pipe of the system, the pressure sensor...

AI Technical Summary

Problems solved by technology

[0002] According to the pressure-enthalpy diagram of the air-conditioning system, it can be seen that the greater the degree of subcooling, the greater the cooling capacity of the air-conditioning system. There are two main types of devices used in air-conditioning to increase the degree of supercooling. One is to use cold water from the outside. Realization, in practical application, due to the addition of an additional water circuit, it is inconvenient for users to use and install, and it is rarely used in ordinary air conditioning systems

The second is to control the subcooling and superheating of the whole system through the temperature difference between the high-pressure pipe and the low-pressure pipe of the system, the pressure sensor, the temperature sensor and the control unit. Used on models, ordinary air conditioners are rarely used

[0003] Because high-efficiency products are being promoted in various fields at present, the air-conditioning industry is also planning to implement the minimum energy-efficiency threshold. Simply increasing the heat exchange area of ​​the two air-conditioning units to increase the degree of supercooling and superheating, so as to achieve the method of improving energy efficiency will not only increase the cost greatly , and the size of the whole machine also increases

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