Air conditioner

Abstract

An air conditioner has a housing having an air inlet opening and an air outlet opening, a heat exchanger placed in the housing, a fan sucking air in a room from the air inlet opening and discharging the air from the air outlet opening after causing the air to pass through the heat exchanger, horizontal louver plates placed in an outlet air flow path of the fan, vertical louver plates, and infrared detection device having at least first and second infrared sensors and estimating the presence of a person in the room by dividing the inside of the room into multiple regions. The first and second infrared sensors are arranged so that portions of the detection ranges thereof overlap each other, and depending on outputs from the first and second infrared sensors, the air conditioner determines whether the region in which the detection ranges overlap alone is a region where a person is present. Thus, the region where the person is present is distinguished without an increase in the number of human detection sensors, and the air conditioner can automatically perform comfortable operation and energy saving operation according to conditions of the person in the room.

Description

technical field [0001] The invention relates to an air conditioner equipped with an infrared sensor, in particular to the improvement of human body detection function. Background technique [0002] The air conditioner air-conditions the room by circulating the room air in a heat exchanger to be adjusted by heating, cooling, dehumidification functions, etc., and then blowing it into the room. At this time, if the conditioned air can be blown to the position where the indoor occupants are, the indoor occupants do not need to perform cumbersome operations one by one, the satisfaction of the indoor occupants is improved, and the surroundings of the indoor occupants become comfortable. Realize energy saving of air conditioners. [0003] As one of them, a method was conceived of: installing an infrared sensor on the air conditioner to detect the position of people in the room, and increasing or decreasing the wind direction, air volume, cooling and heating capacity, etc. accordin...

AI Technical Summary

Problems solved by technology

In this document, it is not clearly stated what kind of signal phase difference is, but taking a step back, even based on human actions, there is no record of how to process the signals generated intermittently in time series to control the air conditioner. lack of practical effect

In addition, there is no mention of the amount of activity of indoor people

[0013] In Patent Document 3, it is necessary to set the area characteristic for each detection area in advance, and this function cannot be confirmed in the test operation immediately after installation, which will cause anxiety to the user

In addition, since the determination condition of presence or absence must also be set as an area characteristic, the development burden of the control software is heavy, and the development cost will increase

Also, there is no reference to the amount of activity of the people in the room

Furthermore, when a plurality of sensors detects, there is no description on how to distinguish between the case where a person is located in an overlapping area and the case where a person is located in a non-overlapping area.

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