Cold storage household air conditioner

Abstract

The present invention belongs to the field of heating, ventilating and air conditioning technology. The cold accumulating household air conditioner includes compressor, condensator, condensator blower, liquid storage, expanding valve, cold accumulating evaporator and evaporator blower. The compressor has its high pressure gas outlet is connected via copper tube to the inlet of the condensator; the condensator has its outlet connected to the inlet of the liquid storage; the refrigerant outlet pipe of the liquid storage, the expanding valve, the cold accumulating evaporator and the low pressure gas suction inlet of the compressor are connected successively. The present invention has the features of both conventional air conditioner refrigeration and medium cold accumulation. Cold is prepared with electric power at power utilizing valley, accumulated in cold accumulating medium and utilized when needed, and this can save electricity cost and balance city power consumption.

Description

Technical field [0001] The invention relates to an air conditioner that utilizes a phase change working medium for cold storage, in particular to a cold storage domestic air conditioner, belonging to the field of heating, ventilation, air conditioning and refrigeration. Background technique [0002] With the improvement of people's living standards, the popularity of air conditioners in commercial, residential and other fields is getting higher and higher, but at present, most household air conditioners use electric energy to drive compressors to perform work for cooling. This has led to: (1) On hot summer nights, the use of a large number of household air conditioners will increase the demand for electricity at night in the city, which will even be far greater than the actual power supply of the city grid. This will cause the overload operation of the city grid and force the power supply bureau under dangerous conditions. Power cut off. (2) Since there are inevitably peaks and v...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of people's living standards, the popularity of air conditioners in commercial and residential areas is getting higher and higher, but most of the current household air conditioners use electric energy to drive compressors to do work for refrigeration, which leads to: (1) On hot summer nights, the use of a large number of household air conditioners will cause a sharp increase in the city's nighttime electricity demand, which will even be far greater than the actual power supply of the city's power grid, resulting in overloading of the city's power grid. In dangerous situations, the power supply bureau has to Blackout

(2) Due to the unavoidable phenomenon of power supply peaks and troughs in the city's power supply during the day, in order to make the power grid run more smoothly and cut peaks and fill valleys, power supply bureaus usually use peak-valley time-of-use charging to encourage valley section use Electricity, so that the operation of air conditioning during peak hours will make users pay more

However, the ice storage mode uses the latent heat of phase change and solidification of water to store cold energy. Its latent heat of phase change is large (334kJ / kg), but its freezing point of phase change is low (0°C). Supercooling degree (4~6℃)

In order to store cooling capacity, the air conditioning unit must operate in a lower operating temperature range (-10 to -8°C), which will inevitably result in a decrease in the efficiency of the air conditioning unit. 70% of cases

Although there is no problem with ice storage in eutectic salt storage, no matter whether ice storage or eutectic salt storage is used, the storage medium is stored in a special container, which requires a brine and corresponding control components such as pipes and valves to complete the process. cooling process, which greatly increases the volume and price of household air conditioning equipment

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