JP2834217B2 - Ventilation air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilating air conditioner for cooling and heating and ventilating 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 conditioner 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, performs ventilation while suppressing an increase in the cooling and heating load due to ventilation, and prevents contaminated air and contaminants generated in the room from being diffused into each room, and providing the air to each room. Prevents smell from adhering to the air supply duct, and automatically switches the air path without any need for manual operation according to the stoppage of the cooling and heating device, and provides a certain amount of stable ventilation air volume. 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 ventilation air conditioner incorporating the bypass passage portion, the inlet of the bypass passage portion has a damper for switching whether to guide the introduced outside air to the heating / cooling portion or to the bypass passage portion. The damper fully opens the bypass passage when the blower fan motor stops.

Operation With this configuration, the indoor return air introduced into the ventilation section is pressurized by the exhaust fan of the fan motor for ventilation, and is 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. And when performing ventilation and cooling and heating at the same time, that is, when the fan motor for blowing is operating, in conjunction with the operation of the fan motor for blowing, the damper provided at the entrance of the bypass passage is closed, The bypass passage is closed, the outside air led to the inlet of the bypass passage part is led to the heating / cooling part, mixed with the indoor return air led directly to the heating / cooling part, pressurized by the blower fan, and It is heated or cooled and supplied to each room to perform ventilation and heating or ventilation and cooling.

When only ventilation is performed, that is, when the fan motor for blowing is stopped, the damper provided at the entrance of the bypass passage is opened in conjunction with the stop of the fan motor for blowing, and the bypass passage is opened. Is opened, and the outside air guided to the entrance of the bypass passage portion is not passed through the heating / cooling portion, but is supplied to each room through the bypass passage portion to perform ventilation.

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 an exhaust fan 6 and an air supply fan 7 driven by a ventilation fan motor 5, air discharged outside by the exhaust fan 6, and outside air supplied from outside by the air supply fan 7. A ventilating portion having a total heat exchanger 8 for performing heat exchange between the air conditioner and a ventilating air-conditioning device 1 for directing outside air introduced after passing through the total heat exchanger 8 to the outside of the ventilating air-conditioning apparatus 1 without passing through a heating / cooling portion. A bypass passage portion 9 is incorporated. Reference numeral 10 denotes a damper provided at the entrance 11 of the bypass passage portion 9, which closes in conjunction with the operation of the fan motor 2 for blowing air, opens in conjunction with the stop, and guides the introduced outside air to the heating / cooling portion. This is for switching between guiding to the bypass passage portion 9. Reference numeral 12 denotes an interlocking control unit for interlocking the start / stop of the fan motor 2 for blowing and the opening and closing of the damper 10. Reference numeral 13 denotes an air supply duct, one end of which is connected to the discharge port 14 of the ventilating air conditioner 1 for sending warm air or cool air to each room. Discharge grills 15a to 15e are provided at the tip of each room. Is attached. 16 is a return air duct,
One end is connected to a suction port 17 of a heating / cooling portion of the ventilation air conditioner 1, and is for guiding return air from each room to a heating / cooling portion of the ventilation air conditioning device 1.
18a to 18d are attached. Reference numeral 19 denotes a return air duct for ventilation, one end of which is connected to a suction port 20 of a ventilation part of the ventilation air conditioner 1 for guiding contaminated air of the room to the ventilation part of the ventilation air conditioner 1; At the end of the suction grill 21
Is attached. Reference numerals 22 and 23 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 21,
The indoor return air guided through the return air duct 19 for ventilation to the ventilation portion of the ventilation air conditioner 1 through the suction port 20 is pressurized by the exhaust fan 6 driven by the fan motor 5 for ventilation, and After passing through the exchanger 8, the air is discharged from the outdoor hood 22 to the outside.
At the same time, the outside air is sucked from the outdoor hood 23 by the air supply fan 7 driven by the fan motor 5 for ventilation, and heat exchanges with the indoor return air by the total heat exchanger 8. It is led to. When ventilation and cooling / heating are performed at the same time, the damper 10 provided at the inlet 11 of the bypass passage portion 9 is interlocked with the fan motor 2 for air blowing through the interlocking control portion 12, so that the fan Motor 2
By the operation of, the outside air is automatically closed, the bypass passage is closed, and the outside air guided to the inlet 11 of the bypass passage portion 9 is guided to the heating / cooling portion. On the other hand, the return air from each room is sucked by the suction grills 18a to 18f of each room, and the return air duct 16
Through the air inlet 17 to the heating and cooling portion of the ventilation air conditioner 1. After being mixed with the outside air after the heat exchange, the air is pressurized by a blower fan 3 driven by a blower fan motor 2 and heated or cooled by a coil 4. After that, the discharge grills 15a-1 of each room
It is discharged to each room by 5e, and performs ventilation and heating or ventilation and cooling.

When only ventilation is performed, the damper 10 provided at the entrance 11 of the bypass passage portion 9 is automatically opened when the fan motor 2 for blowing air is stopped, and the bypass passage is opened. The outside air guided to the inlet 11 is guided to the bypass passage portion 9, and is supplied from the discharge port 14 to the air supply duct 13.
After that, the air is discharged into each room by the discharge grills 15a to 15e in each room, and a certain 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. In addition to preventing odors from adhering to the air supply ducts to each room and preventing the odors from adhering to the air supply ducts to each room and automatically switching the air path without the need for manual operation according to the stoppage of cooling and heating, when only ventilation is performed In order to compensate for the above-mentioned pressure loss when passing through the heating and cooling part, a constant amount of stable ventilation is possible without reducing the air volume due to the pressure loss of the fan motor and coil in the heating and cooling part because it passes through the bypass passage. In addition, since the movement of the fan motor for air blowing, which is indispensable, is required, the running cost can be reduced.

[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, 10: Damper, 11: Inlet, 12: Interlocking control.

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. A ventilation passage air-conditioning device incorporating a portion 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. The inlet portion has a damper for switching between introducing the introduced outside air to the heating / cooling portion and guiding to the bypass passage portion, and the damper switches the bypass passage portion when the fan motor for blowing is stopped. A fully ventilated air-conditioning system.