JPH0781725B2 - Ventilation air conditioner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation air conditioner for ventilation and cooling / heating of a building.

2. Description of the Related Art As shown in FIG.
Air conditioner 101 consisting of fan 105 and heating and cooling radiator 106,
As shown in FIG. 6, it is set on the ceiling of the house, etc., and hot air or cold air is sent to each room through the air supply duct 102, and return air is returned to the air conditioner 101 through the return air duct 103. I have to. The air returned to the air conditioner 101 was sent by a fan 105 driven by a motor 104, heated or cooled by a heating / cooling radiator 106, and then sent again to each room through an air supply duct 102. .

(For example, for air conditioning,
Sanitary Engineering Society, "Knowledge of Practical Use of Air Conditioning Equipment" (Revision No. 2
Version) This is the air conditioning system shown on P.168. ) PROBLEMS TO BE SOLVED BY THE INVENTION In the above-described conventional cooling and heating apparatus, it is not possible to discharge contaminated air generated indoors, and it is necessary to provide another ventilation apparatus for ventilation. However, there is a problem in that simply ventilating leads to an increase in air-conditioning load, gives discomfort to people, and increases the amount of electricity usage.

The present invention is to solve the above-mentioned conventional problems, and can cool and heat while discharging polluted air generated indoors, prevent an increase in the heating and cooling load due to ventilation, and prevent the indoor air from being polluted without the need for manpower. Accordingly, it is an object of the present invention to provide a ventilation air conditioner that can automatically control the comfort state according to the present invention, thereby avoiding giving a discomfort to a person, and that requires less electricity usage.

Means for Solving the Problem In order to solve this problem, the present invention provides an indoor-side suction port that communicates with a room, an indoor-side discharge port, an outdoor-side suction port that communicates with the outside, and an outdoor-side discharge port. And an exhaust air passage that connects the indoor suction port and the outdoor discharge port to each other, and an air supply passage that communicates the outdoor suction port and the indoor discharge port inside the apparatus, An exhaust blade and an air supply blade driven by a motor are provided in the air passage and the air supply passage, and a heat exchanger is provided at a position where the air supply passage and the exhaust air passage intersect with each other. Inside, there is a heating / cooling portion having a fan motor for blowing and a heating / cooling radiator for heating / cooling, and an air supply port for guiding air to the fan motor for blowing, and contamination of air in the exhaust ventilation passage. A CO2 sensor that senses An exhaust port is provided for connecting the air supply ventilation passage and the exhaust air ventilation passage with a part of an opening, and a damper for opening and closing the opening and the air supply inlet and the exhaust outlet is provided. And a control unit for controlling the motor.

Action With this configuration, if indoor air is polluted, CO
The motor having the air supply blade and the air exhaust blade is operated by the signals from the two sensors, and the air supply port and the air exhaust port are formed by opening the damper. Then, the indoor air from each suction port enters from the indoor suction port, passes through the CO2 sensor, is guided to the exhaust vanes through the exhaust port, and after passing through the heat exchanger,
The air is discharged to the outside through the outdoor discharge port, and at the same time, outside air enters from the outdoor suction port, passes through the air supply blades and exchanges heat with the indoor air through the heat exchanger, and then blows through the air supply port. It is heated or cooled by a heating / cooling radiator through the fan motor for use, and is supplied to each room through the indoor discharge port. Also,
When the indoor air becomes clean and comfortable,
The motor having the air supply blade and the exhaust blade is stopped by the signal from the CO2 sensor, and the damper is closed to form the opening. Then, the indoor air from each suction port enters from the indoor suction port, passes through the CO2 sensor, passes through the fan motor for blowing through the opening, is heated or cooled by the heating and cooling radiator, and passes through the indoor discharge port. Is supplied to each room.

In this way, ventilation and cooling or heating are performed while automatically controlling the on / off of the motor having the air supply blade and the exhaust blade and the opening / closing of the damper according to the degree of contamination in the room.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In the figure, reference numeral 1 denotes a ventilation air conditioner, which is provided with an indoor-side suction port 2 and an indoor-side discharge port 3 which communicate with the room outside, and an outdoor-side suction port 4 and an outdoor-side discharge port 5 which communicate with the outdoors.
An exhaust air passage 6 reaching the indoor suction port 2 and the outdoor discharge port 5, and an air supply ventilation passage 7 reaching the outdoor suction port 4 and the indoor discharge port 3 are formed inside. ing.
Further, the exhaust ventilation passage 6 and the supply air ventilation passage 7 intersect with each other in the heat exchanger 8. Further, the exhaust ventilation passage 6 and the supply air ventilation passage 7 are driven by a motor 9. An exhaust blade 10 and an air supply blade 11 are provided. A CO2 sensor 12 for sensing the degree of contamination of indoor air and an exhaust port 13 for guiding air to the exhaust blades 10 are provided in the exhaust ventilation passage 6, and the CO2 sensor 12 is provided in the supply ventilation passage 7. Is provided with a blower fan motor 14 for air conditioning, a cold / hot water coil 15 for heating and cooling air, and an air supply port 16 for introducing air to the blower fan motor 14. Further, the exhaust ventilation path 6 and the supply air ventilation path 7 communicate with each other through an opening 17, and the exhaust opening 13 and the supply opening 16 and the opening 17 are opened and closed by dampers 18a and 18b. Then, according to a signal from the CO2 sensor 12, the dampers 18a and 18b are opened and closed and the motor 9 is supplied to the outside of the ventilation air conditioner 1.
A control unit 19 is provided for controlling the on / off of. One end of the air supply duct 20 is connected to the ventilation air conditioner 1 to send warm air or cold air to each room, and discharge grills 21a to 12f are attached to the tips on the side of each room.
The exhaust duct 22 has one end connected to the ventilation air conditioner 1, and is for guiding the return air from each room to the ventilation air conditioner 1, and suction grills 23a to 23f are provided at the tips on the side of each room. It is attached. Reference numerals 24 and 25 in the figure denote outdoor hoods for taking outdoor exhaust air and outdoor air supply of the ventilation air conditioner 1.

In the above structure, as shown in FIGS. 1 and 2, when the indoor air is contaminated, the control unit 19 controls the air supply blade 11 and the exhaust blade 10 based on the signal from the sensor 12. The motor 9 which it has is driven, and the dampers 18a, 18b
By opening, the air supply port 16 and the exhaust port 13 are formed in an open state. Then, the indoor air sucked from the suction grilles 23a to 23f in each room passes through the exhaust duct 22 and the ventilation air conditioner 1
It enters from the indoor side intake port 2 of, passes through the CO2 sensor 12, is guided to the exhaust blade 10 through the exhaust port 13, passes through the heat exchanger 8, and then passes through the outdoor outlet port 5, and the outdoor hood 24. More discharged outdoors. At the same time, the outside air enters from the outdoor hood 25, passes through the outdoor suction port 4 of the ventilation air conditioner 1 and passes through the air supply blades 11, exchanges heat with the indoor air by the heat exchanger 8, and then the air supply port 16 Through the blower fan motor 14, heated or cooled by the heating / cooling radiator 15, passed through the indoor discharge port 3, passed through the air supply duct 20, and supplied to each room by the discharge grilles 21a to 21f, Contaminated air in the room is discharged and fresh outside air is introduced to heat or cool the room.

If the indoor air becomes clean and comfortable, as shown in Figs. 3 and 4, CO2 sensor 1
Controlled by the control unit 19 based on the signal from 2, the motor 9 having the air supply blade 11 and the exhaust air blade 10 is stopped, and the dampers 18a and 18b close the exhaust port 13 and the air supply port 16 to form an opening. 17 is formed. And the suction grille 23 in each room
The indoor air sucked from a to 23f passes through the exhaust duct 22,
It enters through the indoor air inlet 2 of the ventilation air conditioner 1, passes through the CO2 sensor 12, passes through the fan motor 14 for blowing through the opening 17, and is heated or cooled by the heating / cooling radiator 15, and the indoor outlet 3 is opened. Street, through the air supply duct 20 and discharge grills 21a-2
Air is supplied to each room by 1f, and heating or cooling is performed while circulating air.

As described above, according to this embodiment, the heat exchanger 8 and the CO
Control that includes two sensors 12 and dampers 18a and 18b, and controls the opening and closing of the dampers 18a and 18b and the on / off of the motor 9 having the air supply blade 11 and the exhaust blade 10 by a signal from the CO2 sensor 12 to the outside. By providing the portion 19, when the indoor air is contaminated, the contaminated air is automatically discharged, and at the same time, fresh outside air is introduced to perform heating or cooling while performing well-balanced ventilation. In addition, when the indoor air becomes comfortable, heating or cooling is performed while circulating the indoor air, and effective ventilation can be performed.

Although the CO2 sensor 12 is built in the ventilation air conditioner 1 in the embodiment, the CO2 sensor 12 may be installed anywhere in the room or in the middle of the exhaust duct 22 as long as it can detect the degree of contamination of the indoor air, and the difference in its action and effect. Does not occur. Further, although the CO2 sensor is used in the present embodiment, this may be another sensor such as a reducing gas sensor or an O2 sensor.
As long as the degree of air pollution can be detected, there is no difference in its action and effect.

EFFECTS OF THE INVENTION As is clear from the description of the embodiments, the present invention provides a heat exchanger at the intersection of the air supply ventilation passage and the exhaust ventilation passage, and detects the degree of pollution of indoor air in the exhaust ventilation passage. A control unit that has a sensor and a damper that opens and closes the opening, the air supply port, and the exhaust port, and controls the opening and closing of the damper by the signal of the CO2 sensor and the on / off of the motor having the air supply blade and the exhaust blade. By providing the air conditioner, it is possible to cool and heat while discharging the contaminated air generated in the room, prevent the increase of the cooling and heating load by ventilation, and automatically maintain a comfortable state according to the degree of pollution of the room air without the need for manpower. Since it can be controlled to a high level, it does not give any unpleasant feeling to humans, and since it requires less electricity usage, its practical effect is great.

[Brief description of drawings]

FIG. 1 is a sectional view showing the operation of the ventilation air conditioner of one embodiment of the present invention, FIG. 2 is a sectional view showing the construction of the ventilation air conditioner, and FIG. 3 is a sectional view showing the circulation operation of the ventilation air conditioner. FIG. 4 is a construction sectional view of the ventilation air conditioner, FIG. 5 is a sectional view showing an operation of the conventional air conditioner, and FIG. 6 is a construction sectional view of the conventional air conditioner. 1 ... Ventilation and air conditioner, 2 ... Indoor suction port, 3 ... Indoor discharge port, 4 ... Outdoor suction port, 5 ... Outdoor discharge port,
6 ... Exhaust air passage, 7 ... Supply air passage, 8 ... Heat exchanger, 9 ... Motor, 10 ... Exhaust blade, 11 ... Air supply blade, 12 ... CO2 sensor, 13 ... … Exhaust port, 14 …… Blower fan motor, 15 …… Heating / cooling radiator, 16 …… Air inlet,
17 …… Opening part, 18a, 18b …… Damper, 19 …… Control part.

Claims (1)

[Claims] 1. An apparatus includes an indoor suction port communicating with the room, an indoor discharge port, an outdoor suction port communicating with the outside, and an outdoor discharge port, and the indoor suction port inside the device. An exhaust ventilation passage communicating with the outdoor outlet, and an air supply ventilation passage communicating with the outdoor suction inlet and the indoor outlet are formed,
A motor-driven exhaust blade and an air supply blade are provided in the exhaust air passage and the air supply air passage, and a heat exchanger is provided at a position where the air supply air passage and the exhaust air passage intersect. In the ventilation passage, there is a heating / cooling portion having a blower fan motor and a heating / cooling radiator for heating / cooling, and an air supply port for guiding air to the blower fan motor. A CO2 sensor for detecting the pollution of the exhaust gas and an exhaust port for guiding air to the exhaust blades, the air supply ventilation passage and the exhaust ventilation passage are partially connected to each other, and the opening, the air supply inlet and the exhaust air are connected. A ventilation air conditioner comprising a damper that opens and closes a mouth, and a controller that controls the damper and the motor according to a signal from the CO2 sensor.