JPH0735372A - Air conditioner - Google Patents

Abstract

PURPOSE:To reduce the amount of outside air taken in considerably while maintaining the oxygen concentration in the room air at a preliminarily set value so as not to waste energy and through resultant great improvement in heat efficiency to enable stepping up energy saving. CONSTITUTION:An oxygen sensor 6 measures the oxygen concentration in a room 8. When this concentration declines below a preliminarily set value, an oxygen concentration regulator 21 in an oxygen feeder 7 detects the decline and by controlling a solenoid valve 22 discharges oxygen stored in an oxygen bomb 20 into a box 24 and raises the oxygen concentration in the room 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for controlling an indoor air environment, and more particularly to an air conditioner capable of supplying oxygen to the room by an oxygen supply device.

[0002]

2. Description of the Related Art In a building or the like, an air conditioner is used to maintain a constant temperature and humidity in each room in the building, and
Purifying the air.

FIG. 2 is a block diagram showing an example of such an air conditioner.

The air conditioner 101 shown in this figure comprises a circulating air amount adjusting device 102, a temperature / humidity device 103, a sensor device 104, and a control device 105. The indoor unit 10 obtained by the control unit 105 by the sensor unit 104 while adjusting the amount of air, the amount of outside air introduced, and the amount of air exhausted to adjust the quality of the air that circulates in the room 106 via the temperature and humidity unit 103.
The temperature / humidity device 103 is controlled based on the temperature and the humidity of No. 6, and the temperature and the humidity of the air supplied into the room 106 are set to preset values.

The circulating air amount adjusting device 102 takes in outside air in accordance with the set intake amount, and controls the temperature and humidity device 103.
A motor damper 107 that guides the air to the room, a motor damper 108 that takes in air from the room 106 according to a set exhaust amount, and discharges the air to the outside, and takes in air from the room 106 according to a set circulation amount to the temperature / humidity device. The temperature / humidity device 103 is provided with a motor damper 109 that leads to 103 and takes in outside air according to a set intake amount.
In addition, the air is taken in from the room 106 according to the set exhaust amount and is exhausted to the outside, and the air is taken from the room 106 according to the set circulation amount to obtain the temperature and humidity. Supply to the device 103.

The temperature / humidity device 103 is an electromagnetic valve 110 for adjusting the intake amount of cold / hot water based on a temperature control signal output from the control device 105, and this electromagnetic valve 110.
The temperature of the air supplied from the circulating air amount adjusting device 102 is increased by the cold / hot water supplied via
The cold / hot water coil 111 that is lowered or the like, the water jet pipe 112 that gives humidity to the air supplied from the circulating air amount adjusting device 102 based on the humidity control signal output from the control device 105, and these water jet pipes 112,
A fan 1 that takes in air whose temperature and humidity are adjusted by a cold / hot water coil 111 and supplies the air to the room 106.
And adjusting the temperature and humidity of the air supplied from the circulating air amount adjusting device 102 based on the temperature control signal and the humidity control signal output from the control device 105, and then adjusting the temperature and humidity of the air. To 106.

The sensor device 104 is installed in the room 106.
Temperature sensor 114 for detecting the temperature of the
And a humidity sensor 115 for detecting the humidity of the room 106, and detects the temperature and humidity of the room 106 and supplies the respective detection results to the controller 105.

The control device 105 generates a temperature control signal of a value required to bring the temperature of the room 106 to a preset temperature based on the temperature detection signal output from the temperature sensor 114 of the sensor device 104. Temperature controller 1
16 and a humidity controller that generates a humidity control signal of a value necessary to bring the humidity in the room 106 to a preset humidity based on the humidity detection signal output from the humidity sensor 115 of the sensor device 104. 117 and
Generates a temperature control signal and a humidity control signal necessary to bring the temperature and humidity in the room 106 to preset values based on the temperature detection signal and the humidity detection signal output from the sensor device 104. The temperature and humidity device 10
Control 3

[0009]

By the way, in such an air conditioner 101, if only the heat load is taken into consideration, it is sufficient to provide the cold / hot water coil 111 with an amount of heat commensurate with the indoor load, but only the internal circulation. If the above is repeated, the oxygen concentration contained in the indoor air will decrease, so that the motor dampers 107 to 10 of the circulating air amount adjusting device 102 will be reduced.
9 must be adjusted so that the outside air is taken in and introduced into the room 106, and part of the air in the room 106 must be exhausted to the outside.

Therefore, the amount of cold / hot water supplied to the cold / hot water coil 111 must be increased by the amount of the outside air taken in.

In this case, the increase amount of the heat load due to the intake of the outside air has the following value.

Now, as indoor conditions, summer: 26 ° C DB, 50% RH winter: 20 ° C DB, 50% RH outdoor air conditions: summer: 33.2 ° C DB, 27.6 ° C WB winter: 1.0 ° C DB, -3.5 ° C WB Intake outside air amount is 25 m ³ / h · person When the number of people in the room is 35, the enthalpy of indoor and outside air from the psychrometric chart is indoor 106, summer: 12.6 kcal / kg Winter: 9.2 kcal / kg Outdoor: Summer: 20.3 kcal / kg Winter: 1.0 kcal / kg, and the intake of outside air is 35 people × 25.0 m ³ / h ・ people = 875 m ³ / h Become. The heat load due to the outside air is: q = γ · Q · Δh, where q: outside air load γ: specific gravity of air [1.2 kgf (DA) / m ³ ] Q: outside air amount [m ³ / h] Δh: enthalpy Since it is given by the difference, the heat load due to the outside air in summer and winter is

[Equation 1] Becomes In other words, in the summer, 8
There has been a problem that energy of 100 kcal / h is wasted, and energy of 8600 kcal / h is wasted in winter.

In view of the above circumstances, the present invention greatly reduces the amount of intake of the outside air and eliminates the waste of energy while keeping the oxygen concentration contained in the room air at a preset value, thereby improving the thermal efficiency. It is an object of the present invention to provide an air conditioner capable of achieving a significant improvement in energy saving.

[0014]

In order to achieve the above-mentioned object, the present invention circulates the air which is adjusted in the amount of the internal circulation air, the amount of the outside air introduced, and the amount of the exhausted air while circulating the air. In an air conditioner that adjusts the temperature and humidity of the circulating air by a temperature and humidity device inserted in the road,
An oxygen sensor for detecting the oxygen concentration in the room, and an oxygen storage unit filled with oxygen, oxygen stored in the oxygen storage unit based on the detection result of the oxygen sensor in the air circulation path. An oxygen supply unit for supplying and adjusting the oxygen concentration in the chamber is provided.

[0015]

In the above structure, the oxygen sensor arranged in the room to be air-conditioned detects the oxygen concentration in the room, and the oxygen supply unit detects the oxygen concentration based on the detection result of the oxygen sensor. The oxygen stored in the chamber is supplied to the air circulation path to adjust the oxygen concentration in the room.

[0016]

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

The air conditioner 1 shown in this figure comprises a circulating air amount adjusting device 2, a temperature / humidity device 3, a sensor device 4, a control device 5, an oxygen sensor 6, and an oxygen supply device 7. The internal circulating air amount by the circulating air amount adjusting device 2,
While adjusting the amount of outside air introduced and the amount of air discharged to adjust the quality of the air that circulates in the room 8 through the temperature / humidity device 3, the controller 5 adjusts the temperature and humidity in the room obtained by the sensor device 4. Based on the control of the temperature / humidity device 3, the temperature and humidity of the air supplied to the room 8 are set to preset values, and oxygen is supplied into the room 8 by the oxygen supply device 7. Make sure that the oxygen concentration in the room 8 does not drop below a certain level.

The circulating air amount adjusting device 2 takes in the outside air according to the set intake amount and guides it to the temperature / humidity device 3, and the room 8 according to the set exhaust amount.
A motor damper 10 that takes in air from the air and discharges it outside
And a motor damper 11 that takes in air from the room 8 according to a set circulation amount and guides it to the temperature / humidity device 3, and takes in outside air according to the set intake amount to bring the temperature / humidity device 3 into consideration. In addition, the air is taken in from the room 8 according to the set exhaust amount and is exhausted to the outside, and the air is taken from the room 8 according to the set circulation amount, and the air is taken into the temperature and humidity. Supply to the device 3.

The temperature / humidity device 3 uses an electromagnetic valve 12 for adjusting the intake amount of cold / hot water based on a temperature control signal output from the control device 5, and the circulation by the cold / hot water supplied via the electromagnetic valve 12. Supply from the circulating air amount adjusting device 2 on the basis of a cold / hot water coil 13 for increasing or decreasing the temperature of the air supplied from the air amount adjusting device 2 and a humidity control signal output from the controller 5. And a fan 15 for taking in the air whose temperature and humidity have been adjusted by the water jet pipe 14 and the cold / hot water coil 13 and supplying the air to the room 8. The temperature and humidity of the air supplied from the circulating air amount adjusting device 2 are adjusted based on the temperature control signal and the humidity control signal output from the control device 5. After, it supplies it to the chamber 8.

The sensor device 4 is equipped with a temperature sensor 16 for detecting the temperature of the room 8 and a humidity sensor 17 for detecting the humidity of the room 8. The respective detection results of 1 are supplied to the control device 5.

The control device 5 generates a temperature control signal of a value necessary to bring the temperature of the room 8 to a preset temperature based on the temperature detection signal output from the temperature sensor 16 of the sensor device 4. And a humidity control signal having a value required to bring the humidity in the room 8 to a preset humidity based on the humidity detection signal output from the temperature controller 18 and the humidity sensor 17 of the sensor device 4. And a humidity controller 19 for adjusting the temperature and humidity necessary to bring the temperature and humidity of the room 8 to preset values based on the temperature detection signal and the humidity detection signal output from the sensor device 4. The temperature and humidity device 3 is controlled by generating a control signal and a humidity control signal.

The oxygen sensor 6 detects the oxygen concentration in the room 8 to generate an oxygen concentration detection signal, which is supplied to the oxygen supply device 7.

The oxygen supply device 7 sets the oxygen concentration in the chamber 8 to a preset value based on the oxygen cylinder 20 filled with oxygen and the oxygen concentration detection signal output from the oxygen sensor 6. An oxygen concentration controller 21 that generates a necessary oxygen control signal, and an electromagnetic valve 22 that regulates the amount of oxygen discharged from the oxygen cylinder 20 based on the oxygen control signal output from the oxygen concentration controller 21. The oxygen discharged from the electromagnetic valve 22 is supplied to the temperature / humidity device 3
An oxygen ejection pipe 23 for ejecting the oxygen into the casing 24 and supplying the oxygen to the chamber 8. The stored oxygen is ejected based on an oxygen concentration detection signal output from the oxygen sensor 6. It is jetted into the housing 24 of the temperature / humidity device 3 to increase the oxygen concentration in the room 8.

In this case, the oxygen supply device 7 discharges the amount of oxygen described in detail below to adjust the oxygen concentration in the room 8.

First, the breathing amount (oxygen amount) of the person in the room 8
Is for adult males: 5.8 to 10.3 liters / min. Adult females: 4.0 to 5.1 liters / min. Assuming that there are multiple persons in 8, for example 35 persons, the amount of oxygen to be taken in is 35 persons × 20 liters × 60 minutes = 42 m ³ / h, and the density of oxygen is 1.429 g / liter, The amount of oxygen consumed in the room 8 per hour is

[Equation 2] Becomes And the density of the amount of liquid oxygen is 1.118 g / c
Since it is m ³ , when converted to liquid oxygen amount,

[Equation 3] become.

The oxygen concentration controller 21 of the oxygen supply device 7 has a value (measured value) of the oxygen concentration detection signal output from the oxygen sensor 6 provided in the room 8 and a preset value (set value). ) Are compared with each other, and when the measured value is lower than the set value, the electromagnetic valve 22 is opened for a certain period of time to allow the oxygen in the oxygen cylinder 20 to pass therethrough, and the oxygen is introduced into the housing 24 of the temperature and humidity device 3, and the room 8 Increase the oxygen concentration.

After that, the oxygen concentration controller 21 of the oxygen supply device 7 waits for a preset time, and when the variation in oxygen concentration in the room 8 due to the above-described oxygen supply process has settled, the oxygen sensor 6 outputs. The value of the oxygen concentration detection signal (measured value) is compared with a preset value (set value), and when the measured value is lower than the set value, the electromagnetic valve 22 is opened for a certain period of time again to open the oxygen cylinder. The oxygen in 20 is passed to the inside of the enclosure 24 of the temperature and humidity device 3,
Increase the oxygen concentration in the room 8.

Hereinafter, the oxygen concentration controller 2 of the oxygen supply device 7
In No. 1, the above-described operation is periodically repeated so that the oxygen concentration in the room 8 does not become lower than the set value.

As described above, in this embodiment, the oxygen sensor 6 measures the oxygen concentration in the room 8 and
When the oxygen concentration in the room 8 becomes lower than a preset value, oxygen is discharged from the oxygen supply device 7 to increase the oxygen concentration in the room 8. While keeping the set value, it is possible to greatly reduce the amount of intake of outside air to eliminate waste of energy, thereby significantly improving thermal efficiency and achieving energy saving.

[0030]

As described above, according to the present invention, while keeping the oxygen concentration contained in the room air at a preset value, the intake amount of outside air is greatly reduced to eliminate energy waste, As a result, the thermal efficiency can be greatly improved and energy saving can be achieved.

[Brief description of drawings]

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

FIG. 2 is a configuration diagram showing an example of a conventionally known air conditioner.

[Explanation of symbols]

 1 Air conditioner 2 Circulating air amount adjusting device 3 Temperature / humidity device 4 Sensor device 5 Control device 6 Oxygen sensor 7 Oxygen supply device 8 Indoors 9-11 Motor damper 12 Electromagnetic valve 13 Cold / hot water coil 14 Water jet pipe 15 Fan 16 Temperature sensor 17 Humidity sensor 18 Temperature controller 19 Humidity controller 20 Oxygen cylinder (oxygen storage part) 21 Oxygen concentration controller (oxygen supply part) 22 Electromagnetic valve (oxygen supply part) 23 Oxygen ejection pipe 24 Case

Claims (1)

[Claims] 1. A temperature / humidity device inserted in this air circulation path is used to circulate the air whose internal circulation air quantity, outside air introduction quantity, and air discharge quantity are adjusted, while circulating the air. In an air conditioner that adjusts temperature and humidity, an oxygen sensor that detects the oxygen concentration in the room, and an oxygen storage unit that is filled with oxygen, and store in the oxygen storage unit based on the detection result of the oxygen sensor. An oxygen supply unit that adjusts the oxygen concentration in the room by supplying stored oxygen into the air circulation path.