JPH11141947A - Ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the thermal environment of a room from deteriorating even when the outer air temperature is high or low by regulating the supply air volume through an air volume regulating means. SOLUTION: The air containing hot indoor air is taken through an exhaust air intake port 1 by means of an exhaust fan 8 and passed through a heat exchanging element 10 where heat is stored before the air is discharged outdoors. On the other hand, outer air is taken through a vent 6 by means of an air supply fan 9 and passed through the heat exchanging element 10 in order to recover the stored heat before fresh air is supplied to each room. When the outer air temperature is high or low, the circuit area of an air supply channel is decreased by an air volume regulating means 11. Since the supply air volume is decreased through the heat exchanging element 10, the supply air volume for recovering heat stored in the heat exchanging element 10 is reduced and more heat can be recovered from a fixed supply air flow. In other words, temperature of the supply air flow is increased by varying balance of air supply and exhaust.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilating apparatus equipped with a heat exchange element for recovering exhaust heat, enabling ventilation of a plurality of rooms and not deteriorating the environment of the room where the ventilation is performed. .

[0002]

2. Description of the Related Art In recent years, ventilators applied to a multi-room, which collects exhaust heat and simultaneously ventilates a plurality of rooms, are becoming widespread. Even when used in a cold region, the thermal environment of the room does not deteriorate. The demand for ventilation equipment is increasing.

Conventionally, as an example of this type of ventilation device, FIG.
And the one shown in FIG. Hereinafter, the configuration will be described with reference to FIGS. 8 and 9.

As shown in the figure, a plurality of air supply units are connected to a lower frame 102 having an exhaust air intake 101 and an upper frame 103 provided above, and an air supply duct 104 communicating with a plurality of rooms on the side surface. The main body side plate 109 formed by projecting the opening 105 and the ventilation duct 108 connected to the outside to the exhaust duct 106 and the outside air intake duct 107 which are connected to the outside is projected to the outside.
03 to form a main body 110. Inside the main body 110, the motor 1
An air supply fan 113 and an exhaust fan 114 driven by the air supply unit 12 are provided, and the room air containing the hot air is taken in from the exhaust air intake 101 and the supply air taken in through the outside air intake duct 107. A heat exchange element 115 is provided so that exhaust heat can be recovered between the
The urethane sheet 116 was stuck on the surface of.

The air supply port 105 and the ventilation port 108
The ducts 104, 106, and 107 are connected to each other, and are insulated by wrapping a heat insulating tape 118 around the connection portion. The ducts 104, 106, and 107 are provided in a ceiling space 119. The louver 122 was provided.

[0006]

In the structure of such a conventional ventilating apparatus, since the amount of air supplied to outside air and the amount of exhaust of room air are always constant, even when the outside air temperature is low, it is difficult to operate even when the outside air temperature is low. Since a certain amount of low-temperature outside air is supplied, even when the heat is recovered by the heat exchange element 115, the temperature is low, so low-temperature air is supplied into the room, and the thermal environment of the room is reduced. There was a problem of getting worse.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a ventilator capable of preventing deterioration of the thermal environment of a room even when the outside air temperature is high or low.

[0008]

In the ventilating apparatus according to the present invention, an exhaust air intake is provided on a lower surface, and a plurality of air inlets connected to a plurality of rooms and an air supply duct are provided on a side surface of the ventilating apparatus. A main body having a ventilation port connected to an exhaust duct and an outside air intake duct communicating with the main body, an exhaust fan and an air supply fan provided inside the main body, exhaust air taken in from the exhaust air intake and the outside air; A heat exchange element provided to recover exhaust heat with supply air taken in through the intake duct, and the supply air volume supplied to the plurality of rooms is adjusted by air volume adjustment means. It is configured.

According to the present invention, it is possible to provide a ventilation device that can prevent deterioration of the thermal environment of a room even when the temperature of the outside air is high or low.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has an exhaust air intake port on a lower surface, and a plurality of air supply ports communicating with a plurality of rooms and an air supply duct on a side surface. A main body having a ventilation opening connected to an exhaust duct and an outside air intake duct communicating with the outside, an exhaust fan and an air supply fan provided inside the main body, and exhaust air taken in from the exhaust air intake. A heat exchange element provided to recover exhaust heat between the supply air taken in through the outside air intake duct and the supply air supplied to the plurality of rooms. When the outside air temperature is high or low, by adjusting the air supply volume, the balance between air supply and exhaust changes, the air supply temperature is adjusted, and Of the thermal environment in the room Has the effect of intense change can be prevented.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
This will be described with reference to the drawings. (Embodiment 1) As shown in FIG. 1 and FIG. 2, a plurality of air inlets 3 having an exhaust air inlet 1 on the lower surface and communicating with a plurality of rooms via an air supply duct 2 on a side surface. An exhaust fan 8 and an air supply fan 9 are provided inside a main body 7 provided with a ventilation port 6 connected to an exhaust duct 4 and an outside air intake duct 5 communicating with the outside. A heat exchange element 10 is provided so as to recover exhaust heat between air and supply air taken in through the outside air intake duct 5. A filter 10a for removing air is provided, and in the air supply passage of the heat exchange element 10 and the air supply fan 9, air flow adjusting means 11 for adjusting the air supply air volume by adjusting the opening degree of the damper is provided. Corresponding ceiling opening 1
3 is provided with a louver 14.

In the above configuration, when the exhaust fan 8 and the air supply fan 9 are operated, when the exhaust fan 8 takes in the air including the room hot air from the exhaust air inlet 1 and passes through the heat exchange element 10. The heat is stored and exhausted outside through the exhaust duct 4 provided in the ventilation port 6, while the outside air is taken into the ventilation port 6 through the outside air intake duct 5 by the air supply fan 9, and heat exchange is performed. The heat stored in the heat exchange element 10 when passing through the element 10 is recovered, and fresh air is supplied to each room from the air supply port 3 through the air supply duct 2.

When the outside air temperature is high in the summer or low in the winter, the air volume is adjusted by the air volume adjusting means 11 so as to reduce the circuit area of the air supply passage. Since the amount of air is reduced, the amount of air supplied to recover heat stored in the heat exchange element 10 is reduced by a certain amount of exhaust air, so that the degree of heat recovered to a certain amount of air is increased. That is, by changing the balance between the air supply and the exhaust, the temperature of the air supply flow rises.

As described above, according to the ventilating apparatus of the first embodiment of the present invention, the amount of air supplied to a plurality of rooms is adjusted by the air volume adjusting means 11, so that the air is supplied when the outside air temperature is high or low. By reducing the air volume, the amount of heat recovered in the supply air for the heat stored in the heat exchange element 10 increases, the temperature difference between the room and the room decreases, and the temperature of the room changes depending on the temperature of the supply air. The deterioration of the temperature environment can be prevented.

(Embodiment 2) As shown in FIGS. 3 and 4, an outside air temperature detecting means 12 comprising a temperature detecting sensor is provided in a ventilation opening 6A which communicates with the outside and takes in outside air. A temperature comparing means 13 for comparing a temperature signal from the temperature controller with a preset temperature, and a rotational speed varying means 14 for varying the rotational frequency of the air supply fan 9A from strong to weak by a signal from the temperature comparing means 13. Is provided.

In the above configuration, when the operation is performed when the outside air temperature is low as in winter, the temperature signal detected by the outside air temperature detection means 12 provided in the ventilation port 6A is compared with the set temperature by the temperature comparison means 13. When it is determined that the temperature is low, the rotation speed of the air supply fan 9A is changed from the high rotation to the low rotation by the rotation speed variable unit 14 according to the signal from the temperature comparison unit 13, and the exhaust air 8 stores the hot air in the room. The heat component of the heat exchange element 10 is recovered at a low airflow rate, and the temperature of the airflow increases, so that the room is supplied with a low airflow.

As described above, according to the ventilating apparatus of the second embodiment of the present invention, when the outside air temperature is lower or higher than the set temperature, the number of rotations of the air supply fan 9A is changed from strong rotation to weak rotation. Since it is variable, the amount of heat recovered by the heat exchange element 10 is increased, and the air is supplied to the room with a low air flow, thereby alleviating the deterioration of the temperature environment when the room is being heated or cooled. .

In the second embodiment, the case where the outside air is low has been described. However, it is needless to say that the present invention can be applied to the case where the outside air temperature is high such as in summer.

(Embodiment 3) As shown in FIG. 5, the longitudinal surface on the leeward side of the heat exchange element 10A is divided into two parts on the left and right sides, and each of the two divided air supply channels is closed. Opening / closing means 1 that alternately opens and closes a first damper 15 and a second damper 16 so that when one is closed, the other is opened.
7 is provided.

In the above configuration, when the exhaust fan 8 and the air supply fan 9 are operated, the exhaust fan 8 stores heat while the air including the hot air in the room passes through the heat exchange element 10A. The heat stored in the heat exchange element 10A by the use fan 9 is recovered.

At this time, the first damper 15 is closed,
Since the second damper 16 is open, the air is supplied through the heat exchange element 10A on the side corresponding to the open second damper 16, and the first damper is opened after a certain time by the opening / closing means 17. 15 opens and the second damper 1
6 closes. In such a state, even when the outside air temperature becomes low and the heat exchange element 10A may be frozen, when the first damper 15 is closed, the heat exchange element 10A closed by the first damper 15 has a portion. Since low-temperature outside air does not pass, the air is heated by the heat stored by the exhaust fan 8.

After a certain period of time, the first damper 15 is opened by the opening / closing means 17 and the second damper 16 is closed, so that the heat exchange element 10A corresponding to the second damper 16 is provided with an exhaust fan. 8 is brought into a state of being warmed by the heat stored.

As described above, according to the ventilating apparatus of the third embodiment of the present invention, the opening / closing means 17 composed of the damper that divides the air supply passage of the heat exchange element 10A into two and alternately opens and closes the two divided air supply passages. In the state where the air supply passage is closed, the heat exchange element 10A receives the heat stored by the exhaust fan 8 to prevent the heat exchange element 10A from freezing, and this operation is alternately performed. In addition, freezing of the entire heat exchange element 10A can be prevented.

(Embodiment 4) As shown in FIGS. 6 and 7, an air flow detecting means 18 is provided at a discharge port (not shown) of an exhaust duct connected to the ventilation port 6B.
The air flow rate comparing means 19 for comparing the air flow rate signal with a preset air flow rate is provided, and the rotation speed control means 20 for controlling the rotation speed of the exhaust fan 8A based on the signal from the air flow rate comparing means 19 is provided. .

In the above configuration, when the main body 7A of the ventilator is installed behind the ceiling of the corridor 21 or the like, and the exhaust air intake 1 faces the corridor 21 or the like, the operation is performed with the set exhaust air volume. However, when the doors, windows, and the like communicating with the corridor are opened, the air pressure of the corridor 21 sucked from the exhaust air inlet 1 changes, and the exhaust fan 8A increases the exhaust air volume more than necessary. At this time, as a result of comparing the exhaust air volume detected by the air volume detection unit 18 with the air volume comparison unit 19, if the exhaust air volume is larger than the set air volume, the rotation speed control unit 20 uses the signal from the air volume comparison unit 19 to rotate the exhaust fan 8A. The number is controlled to a low speed.

When the doors, windows and the like are closed and a normal state is reached, the exhaust air volume becomes equal to the set air volume. The rotation speed of the fan 8A is controlled to the normal rotation speed.

As described above, according to the ventilator of the fourth embodiment of the present invention, when the doors and windows communicating with the corridor 21 in which the main body 7A of the ventilator is installed are opened, the pressure changes and the exhaust air volume increases. In this case, since the exhaust fan 8A is automatically controlled to the low rotation speed, wasteful power consumption due to high-speed operation is reduced.

[0028]

As is clear from the above embodiment,
According to the present invention, an exhaust air inlet is provided on the lower surface, and a plurality of air inlets communicated with the plurality of rooms and the air supply duct on the side surface are connected to an exhaust duct and an outside air intake duct which communicate with the outside. A main body provided with a ventilation opening, an exhaust fan and an air supply fan provided inside the main body, and exhaust air taken in from the exhaust air intake and supply air taken in through the outside air intake duct. A heat exchange element provided so as to recover exhaust heat between the plurality of rooms, and the amount of air supplied to the plurality of rooms is adjusted by adjusting the amount of air. It is possible to provide a ventilation device that can prevent the temperature environment from deteriorating.

Also, an outside air temperature detecting means for detecting an outside air temperature, a temperature comparing means for comparing a temperature signal of the outside air temperature detecting means with a set temperature, and a rotation speed of an air supply fan based on a signal from the temperature comparing means. Is provided, the deterioration of the temperature environment in the room can be mitigated even when the temperature of the outside air is high or low.

Further, since the air supply flow path of the heat exchange element is divided into two and the opening / closing means including a damper for alternately opening and closing the two divided air supply paths is provided, freezing of the heat exchange element can be prevented.

Further, an air flow detecting means for detecting an exhaust air flow, an air flow comparing means for comparing an air flow signal of the air flow detecting means with a set air flow, and a rotation speed of an exhaust fan is controlled by a signal from the air flow comparing means. Power consumption is reduced by providing the rotation speed control means

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a ventilation device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the ventilation device is installed in a building.

FIG. 3 is a cross-sectional view illustrating a configuration of a ventilation device according to a second embodiment of the present invention.

FIG. 4 is a block diagram showing control of the ventilation device.

FIG. 5 is a sectional view showing a configuration of a ventilation device according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating a configuration of a ventilation device according to a fourth embodiment of the present invention.

FIG. 7 is a block diagram showing control of the ventilation device.

FIG. 8 is a cross-sectional view showing a configuration of a conventional ventilation device.

FIG. 9 is a partially broken bottom view showing the configuration of the ventilation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exhaust air intake 2 Air supply duct 3 Air supply port 4 Exhaust duct 5 Outside air intake duct 6 Ventilation opening 7 Main body 8 Exhaust fan 8A Exhaust fan 9 Inlet fan 9A Inlet fan 10 Heat exchange element 10A Heat Replacement element 11 Air flow adjusting means 12 Outside air temperature detecting means 13 Temperature comparing means 14 Rotation speed varying means 15 First damper 16 Second damper 17 Opening / closing means 18 Air flow detecting means 19 Air flow comparing means 20 Rotation speed controlling means

Claims (4)

[Claims] An exhaust air intake port is provided on a lower surface, and a plurality of air supply ports communicating with a plurality of rooms through an air supply duct on a side surface are connected to an exhaust duct and an outside air intake duct communicating with the outside. A main body provided with a ventilation opening, an exhaust fan and an air supply fan provided inside the main body, exhaust air taken in from the exhaust air intake, and supply air taken in through the outside air intake duct. And a heat exchange element provided so as to recover exhaust heat between the plurality of rooms, and wherein the amount of air supplied to the plurality of rooms is adjusted by air volume adjusting means. 2. An outside air temperature detecting means for detecting an outside air temperature, a temperature comparing means for comparing a temperature signal of the outside air temperature detecting means with a set temperature, and a rotation speed of an air supply fan based on a signal from the temperature comparing means. The ventilation device according to claim 1, further comprising a rotation speed variable means for varying the rotation speed. 3. The ventilation device according to claim 1, further comprising an opening / closing means comprising a damper for alternately opening / closing the divided air supply flow path by dividing the air supply flow path of the heat exchange element into two. 4. An air flow detecting means for detecting an exhaust air flow, an air flow comparing means for comparing an air flow signal of the air flow detecting means with a set air flow, and a rotation speed of an exhaust fan controlled by a signal from the air flow comparing means. The ventilation device according to claim 1, further comprising: