Air conditioning controlling device and method
First Claim
1. An air conditioning controlling device in an air conditioning system comprising a plurality of variable air volume units for controlling, depending on a load status of a controlled area, a plurality of air volumes of supply air provided to a plurality of controlled areas from an air conditioner, the air conditioning controlling device comprising:
- a supply air temperature controller controlling a temperature of supply air provided by the air conditioner so that a supply air temperature measurement value will match a supply air temperature setting value;
an air volume insufficiency evaluator evaluating whether or not an air volume is insufficient relative to a required air volume based on either a total air volume value, which is a sum of the air volumes supplied to the respective variable air volume units, or a CO2 concentration of a controlled area; and
a supply air temperature setting device changing the supply air temperature setting value in a direction wherein the variable air volume unit increases the air volume, when the air volume insufficiency evaluator has evaluated the air volume to be insufficient, wherein;
when the air conditioner is blowing cold air with a temperature lower than a room temperature of the controlled area, the direction in which the variable air volume unit increases the air volume is a direction in which the supply air temperature setting value increases; and
when the air conditioner is blowing hot air with a temperature higher than the room temperature of the controlled area, the direction in which the variable air volume unit increases the air volume is a direction in which the supply air temperature setting value decreases.
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Accused Products
Abstract
An air conditioning controller includes a supply air temperature controller controlling a temperature of supply air provided to an air conditioner so a supply air temperature measurement value matches a supply air temperature setting value; a total air volume device measuring/calculating a total supply air volume value that is the total of the air volumes to each individual variable air volume unit; a supply air volume controller controlling an air volume of supply air to the air conditioner, depending on the total air volume value; an air volume insufficiency evaluator evaluating if the air volume is insufficient by comparing the total air volume value to a total air volume lower limit value; and a supply air temperature setter changing the supply air temperature setting value in a direction that the variable air volume unit increase the air volume, when there is an evaluation that the air volume is insufficient.
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Citations
10 Claims
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1. An air conditioning controlling device in an air conditioning system comprising a plurality of variable air volume units for controlling, depending on a load status of a controlled area, a plurality of air volumes of supply air provided to a plurality of controlled areas from an air conditioner, the air conditioning controlling device comprising:
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a supply air temperature controller controlling a temperature of supply air provided by the air conditioner so that a supply air temperature measurement value will match a supply air temperature setting value; an air volume insufficiency evaluator evaluating whether or not an air volume is insufficient relative to a required air volume based on either a total air volume value, which is a sum of the air volumes supplied to the respective variable air volume units, or a CO2 concentration of a controlled area; and a supply air temperature setting device changing the supply air temperature setting value in a direction wherein the variable air volume unit increases the air volume, when the air volume insufficiency evaluator has evaluated the air volume to be insufficient, wherein; when the air conditioner is blowing cold air with a temperature lower than a room temperature of the controlled area, the direction in which the variable air volume unit increases the air volume is a direction in which the supply air temperature setting value increases; and when the air conditioner is blowing hot air with a temperature higher than the room temperature of the controlled area, the direction in which the variable air volume unit increases the air volume is a direction in which the supply air temperature setting value decreases. - View Dependent Claims (2, 3, 4, 9)
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5. An air conditioning controlling method in an air conditioning system comprising a plurality of variable air volume units for controlling, depending on a load status of a controlled area, a plurality of air volumes of supply air provided to a plurality of controlled areas from an air conditioner, the air conditioning controlling method comprising:
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a supply air temperature controlling step controlling, by a supply air temperature controller, a temperature of supply air provided by the air conditioner so that a supply air temperature measurement value matches a supply air temperature setting value; an air volume insufficiency evaluating step evaluating, an air volume insufficiency evaluator, whether an air volume is insufficient relative to a required air volume based on either a total air volume value, which is a sum of the air volumes supplied to the respective variable air volume units, or a CO2 concentration of a controlled area; and a supply air temperature setting step changing the supply air temperature setting value in a direction wherein the variable air volume unit increases the air volume, when the air volume is evaluated to be insufficient, wherein; when the air-conditioner is blowing cold air with a temperature lower than a room temperature of the controlled area, the direction in which the variable air volume unit increases the air volume is a direction in which the supply air temperature setting value increases; and when the air-conditioner is blowing hot air with a temperature higher than the room temperature of the controlled area, the direction in which the variable air volume unit increases the air volume is a direction in which the supply air temperature setting value decreases. - View Dependent Claims (6, 7, 8, 10)
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Specification