JPH0313751A - Air conditioning device - Google Patents

Abstract

PURPOSE:To maintain air conditioning environment in which a person in a room feels comfortable by a method wherein various environment conditions in a room are detected, and by fuzzy inference using the detecting value, an output from an air conditioner is regulated so that the feeling temperature of a person in a room is kept at a given value. CONSTITUTION:An input device 2 collects information on various environment conditions in a room, e.g. a room temperature, an atmospheric temperature, the magnitude of the sunlight, weather, humidity, a time zone, the area of a room, the presence of a man, an active mass of a man, and the position of a man, by which an influence is exercised on a feeling temperature. The input device outputs the information to a fuzzy inference device 3. From the inputted information, the fuzzy inference device 3 effects inference, and an output amount of each mechanism part of an air conditioner is calculated so that the feeling temperature of a person in a room is kept at a specified value to send a result to an output device 4. A blast temperature, an airflow, an air direction, humidity, and an open air ratio are listed as an air amount being regulatable by the output mechanism of the air conditioner. Based on an inputted output amount, the output device 4 regulates and varies the output mechanism of an air conditioner 1. This constitution enables realization of comfortable air conditioning through which the feeling temperature of a person in a room is kept at a specified value.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to an air conditioner, and more particularly to a highly functional air conditioner that can maintain the sensible temperature of occupants at a predetermined value.

(Summary of the Invention) This invention detects various indoor environmental conditions and uses the detected values to adjust the output of an air conditioner to maintain the sensible temperature of the occupants at a predetermined value. be.

(Prior art and its problems) -a. The sensation of hot and cold on the surface of the body, which is called sensible temperature, is mainly determined by the temperature, but various other factors are also involved. 9 For example, even if a room is regulated to the same temperature, it will feel hotter if it is illuminated by sunlight from a window, and it will feel colder if the air inside the room moves and there is a wind. I can feel it.

Also, the way you feel cold and warm similarly changes depending on the humidity level.

However, conventional air conditioners do not take sensible temperature into consideration, and simply maintain the room temperature at a set temperature. In other words, in conventional air conditioners, a preset temperature is compared with the temperature detected by a room temperature sensor such as a thermistor installed in the return section of the air conditioner.
The air sent indoors was heated or cooled to reduce the difference.

Therefore, even if the room temperature is maintained at the same level, the occupants may feel hot or cold, a problem that cannot be solved simply by changing the set temperature.

(Purpose of the Invention) This invention was made to solve the above problems, and its purpose is to create an air-conditioned environment that actually feels comfortable to the occupants, taking into account various indoor environmental conditions. Our goal is to provide an air conditioner that can maintain

(Structure and Effects of the Invention) In order to achieve the above object, the present invention uses a plurality of sensors that detect various indoor environmental conditions and fuzzy inference using membership functions from the outputs of these sensors.
The present invention includes means for calculating various output amounts of the air conditioner to bring the sensible temperature of the occupants to a predetermined value, and means for changing the various outputs of the air conditioner based on the calculated output amounts. Features.

This invention thus detects various indoor environmental conditions,
Using fuzzy inference using this value, the output of the air conditioner is adjusted to maintain the sensible temperature of the occupants at a predetermined value, so even if the indoor environmental conditions change, the occupants are always at their optimum temperature. You can be in an air-conditioned environment.

Further, by using fuzzy inference in the arithmetic unit, the configuration of the arithmetic unit is simplified, and output value settings according to various conditions can be relatively easily input using fuzzy rules.

(Explanation of Examples) Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing an outline of an air conditioner according to the present invention.

In the figure, an air conditioner 1 includes an input device 2, a fuzzy inference device 3, and an output device 4.

The input device 2 inputs various indoor environmental conditions that affect the perceived temperature, such as room temperature, outside temperature, intensity of sunlight, weather, humidity, time of day, room size, presence or absence of people, amount of human activity, and people. Collects information regarding the location, etc., and sends it to the fuzzy inference device 3.

The fuzzy inference device 3 performs fuzzy inference from various input information, calculates the output amount of each mechanical part of the air conditioner, and sends it to the output device 4 in order to keep the sensible temperature of the occupants constant.

The amount of air conditioning that can be adjusted by the output mechanism of the air conditioner is as follows:
There are the air temperature, air volume, wind direction, humidity, outside air ratio, etc.

The output device 4 adjusts and changes each output mechanism of the air conditioner 1 based on each input output amount, thereby realizing air conditioning that keeps the sensible temperature of the occupants constant.

FIG. 2 is a block diagram specifically showing an example of the air conditioner l.

In the figure, a room temperature sensor 21 is installed in the return section of the air conditioner 1, and sends a measured room temperature S1 to a sample-and-hold circuit 22.

The radiant heat sensor 23 detects the amount of radiant heat S2 obtained from sunlight etc. indoors, and the sample/hold circuit 24
send to

The biological activity amount sensor 25 measures the biological activity amount S of the person in the room.
3 is detected and sent to the sample and hold circuit 26.

The sample/hold circuits 22, 24.26 hold the input room temperature S1, radiant heat amount S2, and biological activity amount s3 at predetermined intervals, and output signals xl, x2 . It is sent to the fuzzy inference device 27 as x3.

The fuzzy inference device 27 calculates the optimal output value based on the fuzzy rule of the block 28 by fuzzy inference according to the degree of fitness (membership value) of the membership function of the input signals xi, x2°x3. Output signal obtained by defuzzifying the result)'1. )'2 to amplifiers 29 and 30, respectively.

The fuzzy rules stored in block 2 are manually operated room temperature 5l (xi), radiant heat fils2 (x2
), the value of the amount of biological activity s3 (x3) is the antecedent, and the values of the air blowing temperature el (yl) and the air blowing amount e2 (y2) are the consequent. s2
(x2) and biological activity IS3 (x3), a blowing temperature e1 (yl) and a blowing amount e2 (y2) are respectively defined.

The amplifier 29 amplifies the signal y1 and then sends it to the air temperature setting device 31 as the air temperature e1.

The air temperature setting device 31 holds the input air temperature e1 and uses it as a reference value when the air conditioner main body heats or cools the air sent into the room.

In other words, the air temperature setting device 31 corresponds to a room temperature setting section that is manually adjusted by a person in the room in a conventional air conditioner.

The amplifier 30 amplifies the signal y2 and then sends it to the air volume regulator 32 as the air volume e2.

The air volume regulator 32 adjusts the number of rotations of the fan, the opening degree of the damper, etc. based on the input air volume e2 to adjust the amount of air sent into the room from the air conditioner main body.

FIG. 3 shows the input xi input to the fuzzy inference device 27.
, x2. It is a graph showing a membership function used when fuzzifying x3 and further defuzzifying the calculation result into specific outputs Y1 and 12.

Figure a shows a membership function representing the degree of compatibility between the input x1 indicating the room temperature s1 and each fuzzy label.

The figure shows a membership function representing the degree of compatibility between the input χ2 representing the amount of radiant heat S2 and each fuzzy label.

Figure C is a membership function representing the degree of compatibility between each fuzzy label and the input x3 representing the amount of biological activity s3. The horizontal axis of each of these figures represents specific detected values.

Further, FIG. d shows a membership function regarding the output yl indicating the air blowing temperature el.

Figure e shows the membership function regarding the output y2, which indicates the air flow rate e2.

These membership functions are optimally set depending on the specific installation conditions of the air conditioner, such as the size of the room and the capacity of the air conditioner.

In this air conditioner configured in this way, for example, the room temperature is zero degrees (xlmZR) and there is no radiant heat (x2
-ZR), and there is no activity of the person in the room (χ3-ZR),
A high temperature of 30 degrees (71-PL) is output as the air blowing temperature, and a strong air blowing amount (312''PL) is output, making it possible to raise the room temperature in a short time.

In addition to this, when an environmental value that increases the sensible temperature is detected from the radiant heat sensor 23 or the biological activity sensor 25, a blowing temperature e1 that sets the room temperature lower by that amount is output.

In addition, various set values for keeping the sensible temperature in a comfortable state are output and the output of the air conditioner is adjusted according to various indoor conditions.

As a result, it is possible to realize air conditioning that takes into account the perceived temperature, which was not possible with conventional air conditioners that only had the function of setting the room temperature. Optimum air conditioning can be implemented for gyms and other places where people can relax.

In this example, the number of input sensors was three and the number of outputs was two, but it is also possible to use more types of sensors and increase the number of outputs, thereby achieving even more accurate and comfortable air conditioning. can be realized.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an outline of an air conditioner according to the present invention, Fig. 2 is a block diagram showing a specific example of the air conditioner, and Fig. 3 is a block diagram showing a specific example of the air conditioner.
The figure is a graph showing membership functions set in the fuzzy inference device. 1...Air conditioner 2...Input device 3...Fuzzy inference device 4...Output device l...Room temperature sensor 2...Sample/hold circuit 3...Radiant heat sensor 4... Sample/hold circuit 5...Biological activity sensor 6...Sample/hold circuit 7...Fuzzy inference device 9...Amplifier O...Ampto...Blow temperature setting device 2...Air volume regulator 1... Air blowing temperature 2... Air blowing amount 1... Room temperature 2... Radiant heat amount 3... Biological activity amount

Claims (1)

[Claims] 1. To set the sensible temperature of the person in the room to a predetermined value by using a plurality of sensors that detect various indoor environmental conditions and fuzzy inference using a membership function from the outputs of these sensors. An air conditioner comprising: means for calculating various output amounts of the air conditioner; and means for changing various outputs of the air conditioner based on the calculated output amounts.