JP2834232B2 - Ventilation air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation and air-conditioning apparatus for performing ventilation and cooling / heating of a building.

2. Description of the Related Art A conventional cooling / heating method is provided with an air conditioner 101 as shown in FIG. 4, and as shown in FIG. 5, hot air or cold air is supplied to each room through an air supply duct 102. The return air was returned to the air-conditioning air 101 via the return air duct 103. The air returned to the air conditioner 101 is supplied to a fan 10 driven by a motor 104.
After being accelerated by 5 and heated or cooled by the cold / hot water coil 106, it was sent again to each room through the air supply duct 102.

(For example, regarding the method of cooling and heating, see “Knowledge of Practical Air Conditioning Equipment” edited by
Version) p. 168) Problems to be Solved by the Invention In the conventional cooling and heating method, contaminated air generated in the room cannot be discharged, and it is necessary to provide another ventilation device for ventilation. . However, mere ventilation leads to an increase in the cooling and heating load. In addition, the smoke and smell of tobacco generated in one room diffused into each room,
It was sometimes uncomfortable. In addition, these odors permeated into the air supply duct, increasing discomfort over the years.

In addition, when a ventilation device is provided, if outside air for ventilation is introduced through the cooling and heating device regardless of the operation of the cooling and heating device, an extra pressure loss is applied when the cooling and heating device is stopped, and the ventilation air volume is reduced. In addition, in order to prevent a decrease in the amount of ventilation air, there is a problem that running the blower of the cooling / heating device at all times would increase the running cost.

The present invention solves the above-mentioned conventional problems by performing ventilation while suppressing an increase in the cooling and heating load due to ventilation, preventing contaminated air and substances generated in the room from diffusing into each room, and supplying the air to each room. Prevents the smell from adhering to the air duct and automatically starts and stops the cooling and heating device without any need for human intervention, and switches the ventilation air path to obtain a certain amount of stable ventilation air volume, and It is another object of the present invention to provide a ventilation air conditioner that does not require extra running costs.

Means for Solving the Problems In order to achieve the above object, a ventilation air conditioner of the present invention includes a heating / cooling portion having a fan motor for blowing air and a coil for heating / cooling, a fan motor for ventilation, and exhaust air. A ventilation portion having a total heat exchanger for heat exchange with the introduced outside air, and directing the introduced outside air after passing through the total heat exchanger to the outside of the ventilation and air conditioning device without passing through the heating and cooling portion. In the air-conditioning ventilator incorporating the bypass passage portion, the inlet portion of the bypass passage portion has a damper for guiding the introduced outside air to the heating / cooling portion, and for switching whether to guide the outside air to the bypass passage portion, and for controlling the room temperature. The blower fan motor is stopped by a sensor that senses it, and the bypass passage is fully opened by the damper.

Operation With this configuration, the indoor return air introduced into the ventilation section is pressurized by the exhaust fan of the ventilation fan motor, and discharged outside through the total heat exchanger. At the same time, the outside air is sucked in by the air supply fan of the fan motor for ventilation, heat-exchanged with the indoor return air by the total heat exchanger, and then led to the inlet of the bypass passage. When it is determined that air conditioning is required by a sensor that senses room temperature, that is, when ventilation and air conditioning are performed at the same time, the fan motor for blowing air is operated by the signal of the sensor and installed at the entrance of the bypass passage part. Outside damper is closed, the bypass passage is closed, and the outside air is guided to the heating and cooling part of the bypass passage part, and is mixed with the indoor return air directly led to the heating and cooling part, and the air is blown by the blower fan. It is pressurized, heated or cooled by a coil, and supplied to each room to perform ventilation and heating or ventilation and cooling.

When it is determined that cooling and heating is unnecessary by a sensor that senses room temperature, that is, when only ventilation is performed, the fan motor for blowing is stopped by a signal from the sensor and a damper provided at the entrance of the bypass passage. Is opened, the bypass passage is opened, and the outside air guided to the inlet of the bypass passage portion is supplied to each room through the bypass passage portion without passing through the heating / cooling portion, and is ventilated.

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

In the figure, reference numeral 1 denotes a ventilating air-conditioning unit, which is a heating / cooling unit having a blowing fan 3 driven by a fan motor 2 for blowing and a coil 4 for heating or cooling the air discharged from the blowing fan 3. And ventilation fan motor 5
For exchanging heat between the exhaust fan 6 and the air supply fan 7 driven by the air, and the air discharged outside by the exhaust fan 6 and the outside air supplied from outside by the air supply fan 7 Ventilation section having a total heat exchanger 8 of
A bypass passage portion 9 for guiding the introduced outside air after passing through the heating / cooling portion directly to the outside of the ventilation / air-conditioning device 1 is incorporated. Reference numeral 10 denotes a damper provided at the entrance 11 of the bypass passage portion 9 for guiding introduced outside air to the heating / cooling portion,
This is for switching between guiding to the bypass passage portion 9. 12 is a sensor that senses room temperature, 13 is a sensor
An interlocking control portion for interlockingly controlling the start / stop of the fan motor 2 for blowing and the opening / closing of the damper 10 by the signal 12. Reference numeral 14 denotes an air supply duct, one end of which is connected to the discharge outlet 15 of the ventilating air conditioner 1 for sending warm air or cool air to each room.
~ 16e is attached. Reference numeral 17 denotes a return air duct, one end of which is connected to a heating / cooling portion of the ventilation air-conditioning device 1 through an inlet 18 to guide return air from each room to a heating / cooling portion of the ventilation air-conditioning device 1. At the front end of the room is a suction grille 19
a to 19d are attached. Reference numeral 20 denotes a return air duct for ventilation, one end of which is connected to a suction port 21 of a ventilation part of the ventilation air conditioner 1 for guiding contaminated air in the room to the ventilation part of the ventilation air conditioner 1; The suction grille 22 is attached to the tip of. Reference numerals 23 and 24 denote outdoor hoods for taking outdoor exhaust air and outdoor air supply from the ventilation portion of the ventilation air conditioner 1.

In the above configuration, the air is sucked by the suction grill 22,
The indoor return air guided through the return air duct 20 for ventilation to the ventilation part of the ventilation air conditioner 1 through the inlet 21 is pressurized by the exhaust fan 6 driven by the fan motor 5 for ventilation, and the total heat exchange is performed. After passing through the vessel 8, it is discharged outside from the outdoor hood 23. At the same time, the outside air is sucked from the outdoor hood 24 by the air supply fan 7 driven by the ventilation motor 5 and heat exchanges with the indoor return air by the total heat exchanger 8, and then the entrance of the bypass passage 9.
Guided to 11. When it is determined that air conditioning is required by the sensor 12 that senses room temperature, that is, when ventilation and air conditioning are performed at the same time, the signal of the sensor 12 is received, and the fan motor 2 for blowing is automatically activated by the interlocking control unit 13 During operation, the damper 10 provided at the entrance 11 of the bypass passage portion 9 closes, closing the bypass passage, and the outside air led to the entrance 11 of the bypass passage portion 9 is led to the heating / cooling portion. On the other hand, the return air from each room is
The air is sucked in by 19 a to 19 d, passes through the return air duct 17, and is guided to the heating and cooling part of the ventilation air conditioner 1 from the suction port 18. Then, after being mixed with the outside air after the heat exchange, it is pressurized by a blower fan 3 driven by a blower fan motor 2, heated or cooled by a coil 4, and the air supply duct 14 is discharged from a discharge port 15. Then, the air is discharged into each room by the discharge grids 16a to 16e of each room, and ventilation and heating or ventilation and cooling are performed.

Also, when it is determined that air conditioning is unnecessary by the sensor 12 that senses room temperature, that is, when only ventilation is performed,
Upon receiving a signal from the sensor 12, the interlocking control unit 13 automatically stops the fan motor 2 for blowing air, opens the damper 10 provided at the entrance 11 of the bypass passage portion 9, opens the bypass passage, and opens the bypass passage. The outside air led to the inlet 11 of the part 9 is led to the bypass passage part 9 and the discharge port 15
Further, the air is discharged into each room through the air supply duct 14 by the discharge grills 16a to 16e in each room, and a constant amount of stable ventilation is performed.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, ventilation is performed while suppressing an increase in the cooling / heating load due to ventilation, and contaminated air and contaminants generated in the room diffuse into each room. Ventilation, to prevent odors from adhering to the air supply ducts to each room, and to automatically switch off the air conditioning and cooling system without the need for manual intervention by sensors that sense room temperature. If you just do
Because it passes through the bypass passage, there is no decrease in air volume due to the pressure loss of the fan motor and coil in the heating and cooling part, and a constant amount of stable ventilation is possible.It is necessary to compensate for the above pressure loss when passing through the heating and cooling part Since the operation of the fan motor for air blowing is not required, the effect that the running cost can be reduced is exhibited.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a case where a damper of a ventilation air-conditioning apparatus according to an embodiment of the present invention closes a bypass passage. FIG. 2 is a cross-sectional view illustrating a case where a damper of the ventilation air-conditioning apparatus opens a bypass passage. FIG. 3 is a sectional view showing the construction of the ventilation air conditioner, FIG. 4 is a sectional view showing a conventional air conditioner, and FIG. 5 is a sectional view showing the construction of the air conditioner. 1 ... Ventilation air conditioner, 2 ... Fan motor for blowing air, 3
…… Blower fan, 4 …… Coil, 5 …… Ventilation fan motor, 6 …… Exhaust fan, 7 …… Air supply fan,
8: Total heat exchanger, 9: Bypass passage part, 10: Damper, 11: Inlet part, 12: Sensor, 13: Interlocking control part.

Claims (1)

(57) [Claims] 1. A heating / cooling section having a fan motor for blowing air and a coil for heating / cooling, and a ventilation having a fan motor for ventilation and a total heat exchanger for exchanging heat between exhaust air and introduced outside air. Part, and a bypass passage portion for directly introducing outside air after passing through the total heat exchanger to the outside of the ventilation air conditioning device without passing through the heating / cooling portion, wherein the bypass passage portion includes The inlet has a damper for switching between introducing the introduced outside air to the heating / cooling portion and guiding to the bypass passage portion, and stopping the fan motor for blowing by a sensor that senses room temperature, and by the damper. A ventilation air conditioner, wherein the bypass passage is fully opened.