Air-conditioning system, and power estimation method, power estimation device and power consumption calculation method of PTC heater in air-conditioning system

Abstract

The invention discloses an air-conditioning system, and a power estimation method, a power estimation device and a power consumption calculation method of a PTC (Positive Temperature Coefficient) heater in the air-conditioning system. The power estimation method comprises the steps that a voltage effective value of an outdoor unit is acquired; an indoor environment temperature and a temperature of an indoor heat exchanger are acquired, and a surrounding environment temperature of the PTC heater is calculated by establishing a PTC surrounding environment temperature model function; power and a rotating speed of an indoor fan in an indoor unit are acquired, an angle of an air guide strip of the indoor unit is acquired, and volume of air passing through the PTC heater is calculated by establishing an air volume pattern function; and the voltage effective value of the outdoor unit, the surrounding environment temperature of the PTC heater and the volume of the air passing through the PTC heater act as first input variables, and running power of the PTC heater is estimated by performing modeling on the running power of the PTC heater according to the first input variables. According to the power estimation method, the running power of the PTC heater can be accurately obtained without increasing any hardware cost, so that the cost is saved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method and device for estimating the power of a PTC heater in an air conditioning system, a method for calculating power consumption, and an air conditioning system. Background technique [0002] Intelligent power consumption and power consumption management is an important function in smart air conditioners. The premise of intelligent power consumption and power consumption management is to detect the operating power and electricity of household appliances. At present, the power detection of air conditioners uses the electric meter module, which is expensive and only used in high-end air conditioners, and cannot be popularized and used in ordinary air conditioners, making it impossible to fully apply smart power consumption and power consumption management . An important reason hindering the detection of air conditioner power and electric quantity is that the power o...

AI Technical Summary

Problems solved by technology

PTC is a device that consumes a lot of power in the air conditioner. If the real-time operating power of the PTC cannot be accurately known, the power consumption of the air conditioner in the heating mode cannot be obtained unless the current sampling link is added, but this will increase The cost of air conditioners is not allowed in the highly competitive home appliance industry. Therefore, how to accurately calculate the operating power of PTC through the existing hardware platform is still a technical problem that has not been well resolved.

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