JPH0533984A - Ventilation system for air conditioner - Google Patents

Abstract

PURPOSE:To hold a temperature in a room a state near a set temperature and to simultaneously realize a ventilation by digitizing degree of a difference of temperature difference calculating means and degree of contamination by contaminant detecting means by using a membership function of a previously specified fuzzy control, and deciding a speed of a fan. CONSTITUTION:An indoor unit for an air conditioner contains room temperature detecting means 2 and contaminant detecting means 3. A value of contaminant from the means 3 is detected. Then, a temperature difference between the value from the means 2 and a value from room temperature setting means 4 is calculated by temperature difference calculating means 8. Degrees of the above cases are digitized from the values according to a fuzzy control membership function, and a conclusion is selected based on a control rule. A selecting degree of the conclusion is calculated from the degrees of the conclusion and the above cases. The entire conclusions are combined, a center of gravity is obtained from the combined value, and a speed of a ventilation fan of a final control value is decided. Both a temperature control and a ventilation control are controlled in balance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to ventilation during air conditioning.

[0002]

2. Description of the Related Art FIGS.
18 relates to the conventional ventilation, and in FIG. 18, 15 is a human detection body, 16 is a human detection unit, 17 is a control unit, 18 is an indoor humidity detection unit, 19 is an indoor humidity processing unit, 20 is a temperature detector, 21 is a temperature processing unit, 2
Reference numeral 2 denotes a blower. FIG. 19 is a flowchart showing the driving contents. FIG. 20 shows an example in which the fuzzy control disclosed in Japanese Patent Laid-Open No. 63-13142 is applied to an air conditioner. 26 is a detection means, 27 is a temperature / humidity calculation device,
Reference numeral 8 is a fuzzy inference processor, 29 is a compressor control device, and 30 is a control rule memory device.

Next, the operation will be described. When the presence of a person is detected by the person detecting unit 16 in FIG. 18, the humidity detected by the indoor humidity detecting body 18 is equal to or higher than the set humidity, and the temperature detected by the temperature detecting body 20 is equal to or higher than the set temperature, the blower unit 2
Drive 2 Further, in FIG. 20, based on the information from the detecting means 26 and the control rule from the memory device 30 of the control rule, the fuzzy inference processor 28 performs a fuzzy logic operation to give an operation amount to the controller 29 of the compressor. .

[0004]

SUMMARY OF THE INVENTION In conventional air conditioning,
The ventilation function is to ventilate regardless of the room temperature or to operate at a room temperature above a certain temperature as shown in FIG. 18 of the conventional example. In the former case, the room temperature changes when air conditioning is performed. The latter does not work unless the room temperature is above a certain temperature, and there is a problem that ventilation cannot be performed. Further, as shown in the example of FIG. 20, fuzzy control is applied to an air conditioner, and there is no control of ventilation function.

The present invention has been made to solve the above problems, and combines an air conditioner and a ventilation function to keep the temperature of an air-conditioned room close to a set temperature, and at the same time perform ventilation. The purpose is to make it happen.

[0006]

[Means for Solving the Problems] Claim 1 according to the present invention
This air conditioner ventilation system includes a room temperature detecting means for detecting a room temperature, a dirt detecting means for detecting dirt in the room air, a room temperature setting means for setting a room temperature target temperature, and a fan ventilation by a fan. Means, temperature difference calculating means for calculating the difference between the room temperature data from the room temperature detecting means and the data from the room temperature setting means, and the temperature difference calculating means using a membership function of fuzzy control defined in advance. Means for quantifying the degree of difference of the difference and the degree of dirt by the dirt detecting means, and means for selecting the conclusion part thereof based on the control rule of the ventilation fan speed defined in advance,
Means for calculating the degree of selection of the conclusion portion from the conclusion portion and the degree, means for synthesizing all the conclusion portions from the degree of selection, and means for determining the final fan speed of the fan ventilation means from the synthesized value. , By changing the fan speed,
A ventilation system for an air conditioner, comprising: a ventilation fan speed varying means for driving the fan.

According to a second aspect of the present invention, there is provided a ventilation system for an air conditioner, comprising: room temperature detecting means for detecting room temperature;
Contamination detection means for detecting contamination of the air in the room, room temperature setting means for setting a target temperature of room temperature, fan ventilation by a fan, room temperature data from the room temperature detection means, and data from the room temperature setting means A temperature difference calculating means for calculating the difference between the temperature difference calculating means and a fuzzy control membership function defined in advance, means for digitizing the degree of difference of the temperature difference calculating means and the degree of dirt by the dirt detecting means, and Fan ON / OF at specified time
Means for selecting the conclusion part based on the control rule of the F time ratio, means for calculating the selection degree of the conclusion part from the conclusion part and the degree, means for synthesizing all conclusion parts from the selection degree, A final ON / OFF time ratio of the fan ventilation unit based on a combined value; and a ON / OFF time ratio changing unit that drives the fan by changing the ON / OFF time ratio of the fan. .

[0008]

The ventilation system for an air conditioner according to claim 1 of the present invention is such that "the ventilation fan speed is reduced when the temperature difference between the room temperature setting temperature and the room temperature is large and the degree of air pollution is small", "room temperature". If the temperature difference between the set temperature and the room temperature is large and the degree of air contamination is large, set the ventilation fan speed to a medium level. "" Room temperature The temperature difference between the set temperature and the room temperature is small, and the degree of air contamination is small. If it is large, increase the ventilation fan speed, and calculate and infer based on a fuzzy control rule to control the ventilation volume to keep the air-conditioned room temperature close to the set temperature and to clean the room air. It is possible to take.

According to a second aspect of the present invention, there is provided the ventilation system for an air conditioner, "when the temperature difference between the room temperature setting temperature and the room temperature is large and the degree of air pollution is small, the ON time ratio of the ventilation fan is reduced." , "When the temperature difference between the room temperature set temperature and the room temperature is large, and the degree of air pollution is large, the ventilation fan ON time ratio is set to the middle level", "The temperature difference between the room temperature set temperature and the room temperature is small, In addition, if the degree of air pollution is large, increase the ON time ratio of the ventilation fan. "This is calculated and inferred based on a fuzzy control rule, and the ventilation volume is controlled so that the air-conditioned room temperature is close to the set temperature. It is possible to keep the inside of the room to be clean and clean the indoor air.

[0010]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 shows an overall configuration diagram of a ventilation system for an air conditioner according to a first embodiment of the present invention. Reference numeral 1 is an indoor unit of an air conditioner, which has a room temperature detecting means 2 and a dirt detecting means 3 built therein. Four
Is a wireless remote control transmitter with room temperature setting means, etc.
An outdoor unit 5 of the air conditioner has a compressor 6 and the like built therein. 7 is a fan ventilation means. FIG. 2 is a block diagram of a ventilation system of an air conditioner. 2 is room temperature detecting means, 4 is room temperature setting means, 3 is air room dirt detecting means, 8 is temperature difference calculating means, and 9 is fuzzy calculation. Means, 10 is a temperature control unit, 11 is a ventilation fan speed control unit, 12 is a fan motor unit, 6 is a compressor, and 13 is actuators such as other fans of an air conditioner.

In FIG. 2, the room temperature is detected by the room temperature detecting means 2 including a temperature sensor such as a thermistor and a detection circuit. Further, the operator sets the set temperature value by the room temperature setting means 4 such as a wireless remote controller. As the temperature control, the temperature difference calculation means 8 calculates the temperature difference from the room temperature set temperature value and the room temperature, and the compressor 6 is operated / stopped. The temperature control is performed by the temperature control unit 10. In an air conditioner capable of inverter-controlling a compressor motor, generally, the rotational speed variable speed control of the compressor motor is performed based on the temperature difference.

For ventilation control, the fuzzy calculation means 9 calculates the calculation result from the temperature difference calculation means 8 and the dirt amount from the dirt detection means 3 including a dirt sensor and a detection circuit such as a smoke sensor or a CO (carbon monoxide) sensor. Is input to the ventilation fan speed controller 11, and the result is given to the ventilation fan speed controller 11 as a fan speed command. As a result, the rotation speed of the motor 12 is controlled at a variable speed to control the ventilation amount.

Next, the operation contents of the fuzzy calculation means 9 will be described with reference to FIG. First, the dirt value from the dirt detecting means 3 is detected (Step 31). Next, room temperature detection means 2
From the room temperature setting means 4 such as a wireless remote control transmitter is calculated by the temperature difference calculating means 8 (Step 32). With this value, the “degree” of each antecedent part is quantified from the fuzzy control membership functions shown in FIGS.
3). The conclusion part is selected based on the control rules shown in FIGS. 6 and 7 (Step 34). The consequent part of the control rule, which is the conclusion part, is shown in FIG. The horizontal axis of FIG. 8 indicates the rotation speed (rp
m).

Next, the "degree" of this conclusion part and the antecedent part
9 calculates the degree of selection of the conclusion section shown in FIG.
p35). From this, all conclusions are synthesized in Step 36. The synthesized image is shown in FIG. From this combined value
The center of gravity is obtained as indicated by the arrow (Step 37), and the ventilation fan speed which is the final control value is determined (Step 3).
8). This fuzzy inference method is based on MIN- by Mamdani.
The MAX-CG method has been described as an example.

As an example of the contents of fuzzy calculation, as shown in FIG. 7, on the temperature control control side, when the temperature difference between the room temperature set temperature and the room temperature is large, the ventilation volume is decreased, and on the ventilation control side, it becomes dirty. When the degree is large, it operates to increase the ventilation volume. Both the temperature control surface and the ventilation control surface are well balanced and controlled. Further, the temperature difference calculation means 8, the fuzzy calculation means 9, and the temperature control section 10 shown by the broken lines in FIG. 2 can be realized by a microcomputer or the like.

FIG. 10 shows an AC motor phase control system as an example of the ventilation fan speed varying means. In the figure, 23 is an AC power supply, 24 is an AC motor, and 25 is a semiconductor relay, and the ventilation fan speed is varied by controlling the roll angle from the zero cross point of the power supply voltage.

Example 2. Next, a second embodiment will be described with reference to the drawings. The overall configuration diagram of the ventilation system for the air conditioner according to the second embodiment is the same as FIG. 1, and a block configuration diagram of the ventilation system for the air conditioner is shown in FIG. 2 is a room temperature detecting means, 4 is a room temperature setting means, 3 is a room air contamination detecting means, 8 is a temperature difference calculating means, 9 is a fuzzy calculating means, 10
Is a temperature control unit, 14 is a ventilation fan ON / OFF time ratio variable control unit, 12 is a fan motor unit, 6 is a compressor, and 13 is a compressor.
Indicates actuators such as air conditioners and other fans.
In FIG. 11, the room temperature is detected by the room temperature detecting means 2 including a temperature sensor such as a thermistor and a detection circuit. Further, the operator sets the set temperature value by the room temperature setting means 4 such as a wireless remote controller. As the temperature control, the temperature difference calculation means 8 calculates the temperature difference from the room temperature set temperature value and the room temperature, and the compressor 6 is operated / stopped. The temperature control is performed by the temperature control unit 10. In an air conditioner capable of inverter-controlling a compressor motor, generally, the rotational speed variable speed control of the compressor motor is performed based on the temperature difference.

Further, as ventilation control, the calculation result from the temperature difference calculating means 8 and the dirt detecting means 3 comprising a dirt sensor such as a smoke sensor or a CO (carbon monoxide) sensor and a detecting circuit.
The amount of dirt from is input to the fuzzy calculation means 9, fuzzy calculation is performed, and the result is given to the ventilation fan ON / OFF time ratio variable control unit 14 as a command of the ventilation fan ON time within a specified time, and the result is obtained. Motor 12 is ON / OF
F control, ventilation volume is controlled.

Next, referring to FIG. 12, fuzzy operation means 9
The operation content of will be described. First, the dirt value is detected from the dirt detecting means 3 (Step 91). Next, the temperature difference calculating means 8 calculates the temperature difference between the value from the room temperature detecting means 2 and the value from the room temperature setting means 4 such as a wireless remote controller transmitter (Step 92). With this value, the “degree” of each antecedent part is quantified from the fuzzy control membership functions shown in FIGS.
3), the conclusion part is selected based on the control rules shown in FIGS. 13 and 14 (Step 94). The consequent part of the control rule, which is the conclusion part, is shown in FIG. The horizontal axis of FIG. 15 is represented by the ON ratio of the ventilation fan within the specified time.

Next, the "degree" of this conclusion part and the antecedent part
The degree of selection shown in FIG. 16 of the conclusion part is calculated from (St
ep95). From this, all conclusions are synthesized in Step 96. The synthesized image is shown in FIG. The center of gravity is obtained from this combined value as indicated by the arrow in FIG. 16 (Step 97), and the ON / OFF time ratio of the ventilation fan, which is the final control value, is determined (Step 98). The fuzzy inference method has been described by taking the MIN-MAX-GC method of Mamdani as an example.

As an example of fuzzy calculation contents, as shown in FIG. 14, when the temperature difference between the room temperature set temperature and the room temperature is large, the ventilation volume decreases and the ventilation control surface becomes dirty. When the degree is large, it operates to increase the ventilation volume. Both the temperature control surface and the ventilation control surface are well balanced and controlled. Further, the temperature difference calculating means 8, the fuzzy calculating means 9, and the temperature control section 10 shown by the broken line in FIG. 11 can be realized by a microcomputer or the like.

FIG. 17 shows an example of a fan ON / OFF time ratio varying means for turning on / off the AC motor at a constant time.
An example of the FF control method will be shown. In the figure, 23 is an AC power supply, 24 is an AC motor, and 25 is a semiconductor relay, and the semiconductor relay 25 is called for the ON time at a prescribed fixed time.

Example 3. Further, in the above-described first and second embodiments, an example of a control system using an AC motor has been shown as a means for varying the ventilation amount, but a DC motor is also possible and the same effect is achieved. Whether the ventilation means by the fan is built in the air conditioner itself or separated, the same effect can be obtained as long as it can be systematically controlled by wired or wireless signals.

[0024]

The present invention has the following effects.
The ventilation system for an air conditioner according to claim 1, wherein a room temperature detecting means for detecting a room temperature, a dirt detecting means for detecting a dirt of the air in the room, a room temperature setting means for setting a target temperature of the room, and a fan. By using a fan ventilation means, a temperature difference calculating means for calculating the difference between the room temperature data from the room temperature detecting means and the data from the room temperature setting means, and a membership function for fuzzy control defined in advance. A means for digitizing the degree of difference of the difference calculating means and the degree of dirt by the dirt detecting means, a means for selecting the conclusion part based on a control rule of the ventilation fan speed defined in advance, the conclusion part and the degree Means for calculating the degree of selection of the conclusion part, means for synthesizing all the conclusion parts from this degree of selection, and the final fan speed of the fan ventilation means from this combined value. Means for constant, the varying the fan speed, since the configuration of a ventilation fan speed varying means for driving the fan, ventilation control in conjunction with temperature control,
It is possible to maintain a good balance between the room temperature and the degree of dirt in the air, and eliminate the discomfort of temperature changes in the room due to ventilation.

A ventilation system for an air conditioner according to claim 2 is
Room temperature detecting means for detecting the temperature of the room, dirt detecting means for detecting the dirt of the air in the room, room temperature setting means for setting the target temperature of the room, fan ventilation by a fan, and the room temperature detecting means Temperature difference calculating means for calculating the difference between the room temperature data and the data from the room temperature setting means,
Means for digitizing the degree of difference of the temperature difference calculating means and the degree of dirt by the dirt detecting means by using a predefined fuzzy control membership function, and fan ON / OFF time at a predetermined time. Means for selecting the conclusion part based on the control rule of the ratio, means for calculating the selection degree of the conclusion part from the conclusion part and the degree, means for synthesizing all the conclusion parts from the selection degree, and the combined value To a means for determining a final fan ON / OFF time ratio of the fan ventilation means, and a fan ON / OFF time ratio varying means for driving the fan by varying the fan ON / OFF time ratio. As a result, the ventilation control works in conjunction with the temperature control, and it becomes possible to maintain a good balance between the room temperature and the degree of air pollution. To eliminate the discomfort of.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a ventilation system for an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a ventilation system for an air conditioner according to the first embodiment of the present invention.

FIG. 3 is a flowchart of fuzzy operation means of the ventilation system for an air conditioner according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a fuzzy control rule and a membership function of the antecedent part of the ventilation system for an air conditioner according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a fuzzy control rule and a membership function of the antecedent part of the ventilation system for an air conditioner according to the first embodiment of the present invention.

FIG. 6 is a diagram showing a fuzzy control rule of the ventilation system for the air conditioner according to the first embodiment of the present invention.

FIG. 7 is a diagram showing a fuzzy control rule of the ventilation system for the air conditioner according to the first embodiment of the present invention.

FIG. 8 is a diagram showing a membership function of the consequent part of the fuzzy control rule of the ventilation system for an air conditioner according to the first embodiment of the present invention.

FIG. 9 is a diagram showing a fuzzy inference unit of the ventilation system for an air conditioner according to the first embodiment of the present invention, and is a diagram for obtaining a center of gravity from a combined value.

FIG. 10 is a diagram showing a phase control method of an AC motor.

FIG. 11 is a block diagram of a ventilation system for an air conditioner according to a second embodiment of the present invention.

FIG. 12 is a flowchart of fuzzy operation means of the ventilation system for an air conditioner according to the second embodiment of the present invention.

FIG. 13 is a diagram showing fuzzy control rules for a ventilation system for an air conditioner according to a second embodiment of the present invention.

FIG. 14 is a diagram showing fuzzy control rules for a ventilation system for an air conditioner according to a second embodiment of the present invention.

FIG. 15 is a diagram showing a membership function of the consequent part of the control rule of the ventilation system of the air conditioner according to the first embodiment of the present invention.

FIG. 16 is a diagram showing a fuzzy reasoning unit of a ventilation system for an air conditioner according to a second embodiment of the present invention, in which a center of gravity is obtained from a combined value.

FIG. 17 is a diagram showing an ON / OFF control system for an AC motor at a constant time.

FIG. 18 is a configuration diagram relating to ventilation of a conventional air conditioner.

FIG. 19 is a flowchart regarding ventilation of a conventional air conditioner.

FIG. 20 is a control block diagram for ventilation of another conventional air conditioner.

[Explanation of symbols]

2 Room temperature detection means 3 dirt detection means 4 Room temperature setting means 7 Fan ventilation means 8 Temperature difference calculation means 9 Fuzzy operation means 11 Ventilation fan speed controller 12 Fan motor section

Claims (2)

[Claims] 1. Room temperature detecting means for detecting the temperature of a room,
Contamination detection means for detecting contamination of the air in the room, room temperature setting means for setting a target temperature of room temperature, fan ventilation by a fan, room temperature data from the room temperature detection means, and data from the room temperature setting means A temperature difference calculating means for calculating the difference between the temperature difference calculating means and a fuzzy control membership function defined in advance, means for digitizing the degree of difference of the temperature difference calculating means and the degree of dirt by the dirt detecting means, and Means for selecting the conclusion part based on the specified control rule of the ventilation fan speed, means for calculating the selection degree of the conclusion part from the conclusion part and the degree, and means for synthesizing all the conclusion parts from the selection degree And a means for determining the final fan speed of the fan ventilation means from the combined value, and a ventilation fan speed that drives the fan by varying the fan speed. Ventilation system for an air conditioner and means. 2. Room temperature detection means for detecting the temperature of a room,
Contamination detection means for detecting contamination of the air in the room, room temperature setting means for setting a target temperature of room temperature, fan ventilation by a fan, room temperature data from the room temperature detection means, and data from the room temperature setting means A temperature difference calculating means for calculating the difference between the temperature difference calculating means and a fuzzy control membership function defined in advance, means for digitizing the degree of difference of the temperature difference calculating means and the degree of dirt by the dirt detecting means, and Fan ON / OF at specified time
Means for selecting the conclusion part based on the control rule of the F time ratio, means for calculating the selection degree of the conclusion part from the conclusion part and the degree, means for synthesizing all conclusion parts from the selection degree, A means for determining a final fan ON / OFF time ratio of the fan ventilation means from a combined value, and a fan ON / OFF time ratio variable means for varying the fan ON / OFF time ratio to drive the fan. Air conditioner ventilation system.