JPH03156226A - Ventilating air conditioner - Google Patents

Abstract

PURPOSE:To achieve stable ventilation at a constant air volume, by providing a switching damper for leading the outside air to a heating/cooling part or a bypass passage part, and controlling the starting and stopping of a fan motor and the opening and closing of the damper in conjunction by use of a room temperature sensor. CONSTITUTION:Room air taken in through a suction grille 22 and introduced to a ventilation part of a ventilating air conditioner 1 through a suction port 21 is passed through an all purpose heat exchanger 8, before being discharged. The outside air is taken in through an external hood 24, exchanges heat with the room air at the heat exchanger 8, and is led to an inlet part 11 of a bypass passage part 9. When it is judged by a room temperature sensor 12 that cooling or heating is necessary, a fan motor 2 is automatically operated, and a damper 10 closed, so that the outside air is led to a heating/cooling part. The room air returned from each room is taken in through suction grilles 19a19d, is led through a suction port 18 to the heating/cooling part, where it is mixed with the outside air, and the mixed air is heated or cooled by a coil 4, before being discharged into each room. When it is judged by the sensor 12 that only ventilation is to be conducted, the fan motor 2 is automatically stopped, and the damper 10 opened, whereby stable ventilation at a constant air volume is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a ventilation air conditioning system for ventilation and heating and cooling of buildings.

2. Description of the Related Art The conventional method of heating and cooling is to install an air conditioner 101 as shown in FIG. 4, and as shown in FIG. The sent and return air was returned to the air conditioner 101 via a return air duct (return air duct) 103. The air that has returned to the air conditioner 101 is accelerated by a fan 105 driven by a motor 104, and the air is heated and cooled/l/10
After being heated or cooled by S, it passes through the air supply duct 102 again and is sent to each room.

(For example, regarding heating and cooling methods, please refer to the ``Practical Knowledge of Air Conditioning Equipment'' edited by the Japan Society of Air Conditioning and Sanitary Engineers (revised 2nd edition).
(edition) page 168) Problems to be Solved by the Invention With the conventional heating and cooling methods described above, it was not possible to exhaust the contaminated air generated indoors, and it was necessary to install a separate ventilation device for ventilation. . However, simply providing ventilation will lead to an increase in the heating and cooling load. Also, there is-
Cigarette smoke and odors generated in the rooms often spread throughout the rooms, causing discomfort. Moreover, these odors permeated into the air supply ducts and became increasingly unpleasant over the years.

Furthermore, when a ventilation device is installed, if outside air is introduced for ventilation through the heating and cooling device regardless of whether the heating or cooling device is stopped, an extra pressure loss will occur when the heating or cooling device is stopped, and the ventilation air volume will be reduced. In addition, if the blower of the air conditioner/heater is constantly operated in order to prevent a decrease in the amount of ventilation air, there are problems such as high running costs.

The present invention solves the above-mentioned conventional problems. It performs ventilation while suppressing the increase in heating and cooling load due to ventilation, prevents contaminated air and pollutants generated indoors from spreading to each room, and also prevents pollutants from spreading into each room. It also prevents odors from penetrating into the air supply duct, automatically turns on and off the air conditioning system without the need for human intervention, and switches the ventilation air path to provide a constant and stable amount of ventilation air. The object of the present invention is 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, the ventilation air conditioning system of the present invention has the following features:
Inside the device, there is a heating and cooling section that has a fan motor for blowing air and a coil for heating and cooling, and a ventilation section that has a fan motor for ventilation and a total heat exchanger for exchanging heat between the exhaust air and the introduced outside air. and a bypass passage section for directing the introduced outside air after passing through the total heat exchanger mJ to the outside of the device without passing through the heating and cooling section, and the inlet of the bypass passage section is provided with a built-in bypass passage section for guiding the introduced outside air after passing through the total heat exchanger. It has a damper that switches between guiding the air to the heating and cooling section or to the bypass passage section, and has a configuration in which starting/stopping of the fan motor for blowing air and opening/closing of the damper are controlled in conjunction with a sensor that detects room temperature. It is.

Function: With this configuration, indoor return air introduced into the ventilation section is pressurized by the exhaust fan of the ventilation fan motor, and is discharged outdoors through the total heat exchanger. At the same time, outside air is sucked in by the air supply fan of the ventilation fan motor, exchanges heat with indoor return air in the total heat exchanger, and then is guided to the inlet of the bypass passage section.

If a sensor that detects the room temperature determines that heating and cooling is necessary, that is, if ventilation and heating and cooling are to be performed at the same time, the sensor's signal causes the fan motor for ventilation to operate, and the The provided damper is closed, the bypass passage is closed, and the outside air guided to the inlet of the bypass passage section is guided to the heating and cooling section, where it mixes with the indoor return air that is directly guided to the heating and cooling section.
It is pressurized by a blowing fan, heated or cooled by a coil,
It will be supplied to each room and perform ventilation and heating or ventilation and cooling.

In addition, if a sensor that detects room temperature determines that heating and cooling is not necessary, that is, if only ventilation is performed, the sensor's signal will stop the fan motor for blowing air, and the damper installed at the entrance of the bypass passage will is opened, the bypass passage is opened, and the outside air introduced to the inlet of the bypass passage portion passes through the bypass passage portion without passing through the heating/cooling portion, and is supplied to each room for ventilation.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 to 3.

In the figure, reference numeral 1 denotes a ventilation air conditioner, which includes a heating and cooling part that includes an air blower 77 driven by an air blower motor 2 and a coil lv4 for heating or cooling the air discharged from the air blower fan 3. , the exhaust fan 6 and the air supply fan 7 driven by the ventilation motor 6, and the air discharged outdoors by the exhaust fan 6 and the outside air supplied from outdoors by the air supply fan 7. a ventilation section having a total heat exchanger 8 for performing heat exchange between the ventilation section and a bypass section for guiding the introduced outside air after passing through the total heat exchanger 8 directly to the outside of the ventilation air conditioner 1 without passing through the heating and cooling section. It has a built-in passage section 9. 1
o is a damper provided at the inlet portion 11 of the bypass passage section 9, and is used to switch whether the introduced outside air is guided to the heating/cooling section or to the bypass passage section 9. 12
is a sensor that detects room temperature, and 13 is sensor 12
This is an interlock control part that interlocks and controls the start/stop of the blower motor 2 and the opening/closing of the damper 10 based on the signals.

In addition, 14 is an air supply duct, one end of which is a ventilation air conditioning system @1.
It is connected to the discharge port 15 of the air outlet 15 to send hot or cold air to each room, and there is a discharge outlet at the tip of each room. J/l'
16a to 16e are attachments.

17 is a return air duct, one end of which is connected to the suction port 18 of the heating and cooling section of the ventilation air conditioner 1, and is for guiding return air from each room to the heating and cooling section of the ventilation air conditioner 1;
Suction grilles j9a to t9d are attached to the tip of each chamber.

2Q is a return air duct for ventilation, one end of which is connected to the suction port 21 of the ventilation section of the ventilation air conditioner 1, and serves to guide contaminated air from the room to the ventilation section of the ventilation air conditioner 1;
A suction grill 22 is attached to the end on the room side. 2
3 and 24 are outdoor hoods for taking outdoor exhaust air and outdoor air supply from the ventilation part of the ventilation air conditioner 1.

In the above configuration, suction! The indoor return air that is sucked in by J/l/22, passes through the ventilation return air duct 20, and is led to the ventilation part of the ventilation air conditioner 1 through the suction port 21 is sent to the exhaust fan driven by the ventilation motor 6. It is pressurized at 6, passes through a total heat exchanger 8, and is discharged outdoors from an outdoor hood 23. At the same time, outside air is sucked in from the outdoor hood 24 by the air supply fan 7 driven by the ventilation motor 6, and after exchanging heat with indoor return air in the total heat exchanger 8, it is passed through the bypass passage section 9.
is guided to the entrance section 11 of the. When the sensor 12 that detects the room temperature determines that heating and cooling is necessary, that is, when ventilation and heating and cooling are performed at the same time, the interlock control section 13 automatically operates the blower motor 2 in response to a signal from the sensor 12. At the same time, the damper 10 provided at the inlet portion 11 of the bypass passage portion 9 closes, closing the bypass passage, and the outside air introduced to the inlet portion 11 of the bypass passage portion 9 is introduced to the heating and cooling portion. On the other hand, return air from each room is sucked in by the suction holes z+/19a to 19d of each room, passes through the return air duct 17, and is led to the heating and cooling portion of the ventilation air conditioner 1 through the suction port 18. After being mixed with the outside air after the heat exchange, it is pressurized by a blowing fan 3 driven by a blowing motor 2, heated or cooled by a carp/I/4, and then passed through a discharge port 16 into an air supply duct 14. After that, the air is discharged to each room by the discharge gas IJ/v16a to 16e of each room, and ventilation and heating or ventilation and cooling are performed.

In addition, if the sensor 12 that detects the room temperature determines that heating and cooling is not necessary, that is, if only ventilation is performed,
Upon receiving the signal from the sensor 12, the interlocking control section 13 automatically stops the blower motor 2, and the damper 10 provided at the inlet 11 of the bypass passage section 9 opens to open the bypass passage. entrance section 11
The outside air introduced into the air is guided to the bypass passage section 9, passes through the air supply duct 14 from the discharge port 15, and is then delivered to the discharge grip p16 of each chamber.
A to 16e discharge air into each room, providing a constant amount of stable ventilation.

Effects of the Invention As is clear from the above explanation of the embodiments, according to the present invention, ventilation is performed while suppressing an increase in the cooling and heating load due to ventilation, and polluted air and pollutants generated indoors are diffused into each room. It also prevents odors from penetrating into the air supply ducts to each room, and automatically stops heating and cooling operations without the need for human intervention and switches the air path, making it ideal for ventilation only. Since it passes through a bypass passage, there is no decrease in air volume due to pressure loss in the fan motor or coil in the heating and cooling section, and a constant amount of stable ventilation is possible. Also,
When the air is passed through the heating and cooling section, there is no need to operate the blower motor that is necessary to compensate for the pressure loss, resulting in effects such as reduction in running costs.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a case where a damper of a ventilation air conditioner according to an embodiment of the present invention closes a bypass passage, and FIG. 2 is a sectional view showing a case where a damper of the ventilation air conditioner opens a bypass passage. FIG. 3 is a cross-sectional view of the ventilation air conditioner, FIG. 4 is a cross-sectional view of a conventional air conditioner, and FIG. 6 is a cross-sectional view of the air conditioner. 1...Ventilation air conditioner, 2...Blower motor, 3...Blower fan, 4...Carp μ, 6... Ventilation motor, 6...Exhaust fan, 7...Air supply fan, 8...
...Total heat exchanger, 9...Bypass passage part, 1
0...Damper, 11...Population section, 12.
...Sensor, 13...Interlocked control part.

Claims (1)

[Claims] Inside the device, there is a heating and cooling section that has a fan motor for blowing air and a coil for heating and cooling, and a ventilation section that has a fan motor for ventilation and a total heat exchanger for exchanging heat between the exhaust air and the introduced outside air. and a bypass passage section for directly guiding the introduced outside air after passing through the total heat exchanger to the outside of the apparatus without passing through the heating and cooling section, and the inlet of the bypass passage section has a built-in part that heats the introduced outside air. The ventilation air conditioner has a damper for switching between guiding the air to a cooling section or a bypass passage section, and has a configuration in which starting/stopping of the fan motor for blowing air and opening/closing of the damper are controlled in conjunction with a sensor that detects room temperature. Device.