JPS648251B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air conditioning ventilation fan, and its purpose is to perform heat exchange ventilation through a heat exchange element during air conditioning and heating, and to perform heat exchange ventilation during periods when air conditioning and heating are not being performed. To provide an air conditioning ventilation fan capable of increasing the volume of ventilation air by performing forced simultaneous supply and exhaust, and using it as a circulator to equalize indoor temperature during heating and cooling, thereby improving the heating and cooling effect.

Conventionally, as shown in FIG. 1, an air conditioning ventilation fan has a heat exchange element 101 at the intersection of an exhaust ventilation path and a supply air ventilation path.
are fixed, and the exhaust vane 102 and the air supply vane 1 are fixed.
03 is rotated by a motor 104, and heat is exchanged by a heat exchange element 101, and it performs its function during cooling and heating, but in the intermediate seasons of spring and autumn, heat exchange is not necessary for exhaust air and supply air. Since the air passes through the element 101, the amount of air originally provided by the blower provided inside the air conditioning ventilation fan cannot be effectively utilized. Additionally, when heating and cooling, there is a considerable temperature difference between the ceiling and the floor, so it is desirable to install a circulator, but it is not possible due to cost, space, etc. to install an air conditioner, air conditioning ventilation fan, and circulator in the same room. It was hot.

The present invention eliminates such conventional drawbacks, and embodiments thereof will be described below with reference to FIGS. 2 to 10.

2 to 4, 1 is a main body having an outdoor suction port 2, an outdoor discharge port 3, and a partition plate 4; 5 is a louver having an indoor suction port 6 and an indoor discharge port 7; It is fitted. 8 is a heat exchange element, as shown in FIG. 4, in which heat exchanger plates 9 and spacer plates 10 having moisture permeability and heat conductivity are alternately laminated. 11a, 11b, 11c are the main body 1
The partition plates 12 are formed on the louver 5, and the ends thereof are in contact with the ridges of the heat exchange element 8 to partition the heat exchange element 8 into upper, lower, left and right chambers. 13 is an exhaust vane, 14 is an exhaust casing, 15 is an air supply vane, 16 is an air supply casing, and 17 is a motor for rotating the exhaust vane 13 and the air supply vane 15.

In the above configuration, A→A' indicates an exhaust ventilation path, and indoor air enters the heat exchange element 8 from the indoor side suction port 6 of the louver 5, passes through the exhaust casing 14,
The exhaust vane 13 rotated by the motor 17 exhausts the air from the outdoor outlet 3 of the main body 1 to the outside. In addition, B → B' indicates the air supply ventilation path, and the outside air is passed from the outdoor side suction port 2 of the main body 1 to the air supply casing 1.
6, enters the heat exchange element 8 by the air supply vanes 15 rotated by the motor 17, and is supplied into the room from the indoor side discharge port 7 of the louver 5.

In this way, the indoor air flows along the exhaust ventilation path A → A', and the outside air flows along the supply air ventilation path B → B', and the heat exchange element 8 exchanges sensible heat and latent heat (moisture). This will be described in detail below.

During cooling, the indoor air, which is lower in temperature and humidity than the outside air, enters the heat exchange element 8 along the exhaust ventilation path A→A', passes through the heat transfer plate 9 of the heat exchange element 8, and
Sensible heat is removed from the outside air supplied into the room along the air supply ventilation path B→B', and moisture is transmitted through the heat exchanger plate 9, becoming high temperature and high humidity and being exhausted to the outside.

On the other hand, the outside air, which is hotter and more humid than the indoor air and enters the heat exchange element 8 along the supply air passage B→B', passes through the heat exchanger plate 9 of the heat exchange element 8 to the exhaust air passage A. → Gives sensible heat and moisture to the indoor air exhausted outside along A', making it low temperature and low humidity before being supplied indoors.

Note that the same effect occurs during heating.

Next, the operation during forced simultaneous suction and exhaust ventilation will be explained using FIGS. 5 and 6. In the figure, 18 is an opening provided in the partition plate 11a for communicating between the indoor side suction port 6 and the outdoor side suction port 2 of the exhaust ventilation path, and 19 is an opening provided between the indoor side discharge port 7 and the outdoor side of the supply air ventilation path. An opening 20 provided in the partition plate 11b for communicating with the discharge port 3
2 is a damper for arbitrarily opening and closing the opening 18;
1 is a damper for arbitrarily opening and closing the opening 19.

In the above configuration, when the motor 17 is operated with the damper open as shown in FIGS. 5 and 6, indoor air is sucked in from the indoor outlet 7 of the louver 5, and the opening 19 is drawn in as shown by the arrow X→X'. After that, the air is exhausted from the exhaust casing 14 to the outside through the outdoor discharge port 3 by the exhaust vanes 13. On the other hand, outside air is supplied from the outdoor side suction port 2 through the air supply casing 16 and into the room from the indoor side suction port 6 of the louver 5 through the opening 18 by the air supply vane 15 as shown by the arrow Y→Y'. It bothers me.

Therefore, the exhaust ventilation path A→A′ and the supply air ventilation path B→
Since indoor air and outdoor air can be forced to be simultaneously supplied and ventilated without passing through the heat exchange element 8, which is a considerable resistance in B', the air volume inherent in the blower can be effectively used during the spring and autumn seasons. Especially before and after the cooling season, cooling with outside air is also possible.

Next, the circulator will be explained using FIGS. 7 and 8. In the figure, 22 is a circulation opening provided in the partition plate 4, which communicates the exhaust air passage A→A' with the supply air air passage B→B'. A shutter 23 is formed by an external shutter 25 fixed parallel to the shutter rotation axis 24 and an internal shutter 26 fixed perpendicular to the shutter rotation axis 24, and which opens and closes around the shutter rotation axis 24. It is. The inner and outer shutters 25 and 26 have a rotation angle of 90 degrees, and the sixth
As shown in the figure, when the external shutter 25 is opened, the internal shutter 26 closes the circulation opening 22, and when used as a circulator as shown in Figures 7 and 8, the external shutter 25 is closed. shall be. Then, the internal shutter 26 rotates 90 degrees from the closed position, so the circulation opening 2
2 is in the open state. That is, external shutter 2
5 closes the outdoor side suction port 2 and the outdoor side discharge port 3 and isolates them from outside air, and the internal shutter 26 opens the circulation opening 22.

In the above configuration, when the shutter 23 is closed, the outdoor side suction port 2 and the outdoor side discharge port 3 are closed.
The circulation opening 22 is opened and the exhaust ventilation passage A→
A' and the air supply ventilation path B→B' communicate with each other, and the indoor air is sucked in from the indoor outlet 7 as shown by the arrow Z→Z', passes through the opening 19 from the exhaust casing 14 to the exhaust vane 13 After being fed into the circulation opening 22 by the air supply casing 16, the air is discharged into the room from the indoor suction port 6 through the opening 18 by the air supply vane 15. Therefore, it has the function of a circulator, and for example, during heating, warm air accumulated near the ceiling can be blown downward, eliminating discomfort caused by uneven temperature distribution and improving the heating effect. be able to.

In addition, in the first embodiment of the present invention, the heat exchange element 8
If the heat exchanger plate 9 is made of a moisture-impermeable and non-hygroscopic material, only sensible heat will be exchanged through the heat exchanger plate 9, and no moisture will be exchanged. For example, like a bathroom, it drains moisture and protects the bathroom from moisture damage.
Moreover, it is extremely effective in cases where it is necessary to recover the sensible heat discharged outside by exhaust air and to keep the bathroom warm.

As described above, according to the present invention, by forming the heat exchanger plate of the heat exchange element with a material having moisture permeability and heat conductivity, sensible heat and moisture can be exchanged via the heat exchanger plate,
In addition, during the intermediate period when heating and cooling is not performed, forced simultaneous supply and exhaust ventilation can be performed without passing through a heat exchange element, increasing the ventilation air volume.Furthermore, the shutter can also be used as a circulator during heating and cooling. If the heat transfer plate of the heat exchange element is made of a moisture-impermeable and non-hygroscopic material, it will be possible to provide an air conditioning ventilation fan that can be used in high humidity places such as bathrooms, and has many excellent functions. The effect is extremely large.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a conventional air conditioning ventilation fan, Fig. 2 is a plan sectional view of an embodiment of the present invention during heat exchange ventilation, Fig. 3 is a sectional view of the same side, and Fig. 4 is a heat exchange element. FIG. 5 is a plan sectional view when the same simultaneous air supply and exhaust ventilation is performed, FIG. 6 is a side sectional view, FIG. 7 is a plane sectional view when the same circulator is used, and FIG. 8 is a same side sectional view. 1... Main body, 2... Outdoor side suction port, 3... Outdoor side discharge port, 4... Partition plate, 5... Louver, 6...
Indoor suction port, 7...Indoor discharge port, 8...Heat exchange element, 9...Heat transfer plate, 10...Spacer plate, 11...
...Dividing plate, 12... Partitioning plate, 13... Exhaust vane, 14... Exhaust casing, 15... Air supply vane, 16... Air supply casing, 17... Motor, 18... Opening , 19... opening, 20...
Damper, 21...Damper, 22...Circulation opening, 23...Shutter, 24...Shutter rotation shaft, 25...External shutter, 26...Internal shutter.

Claims (1)

[Scope of Claims] 1. An air supply ventilation path that communicates with the indoor side discharge port and the outdoor side suction port, an air supply ventilation path that communicates with the indoor side suction port and the outdoor side discharge port, and an intersection between the two ventilation paths. a heat exchange element arranged on the outdoor side suction port side in the air supply air passage; an exhaust air blower arranged on the outdoor side outlet side in the exhaust air passage; a first opening that communicates with the indoor side discharge port and the exhaust air passage; a second opening that communicates with the indoor side suction port and the air supply air passage; a damper that opens and closes both the openings; A shutter that opens and closes an opening that communicates a supply air passage on the suction side of the air supply blower and an exhaust air passage on the discharge side of the exhaust air blower, and an external shutter that opens and closes the outdoor side suction port and the discharge port. , closing the damper and shutter and opening the external shutter during heat exchange ventilation, opening the damper and external shutter during forced simultaneous supply and exhaust ventilation,
and an air conditioning ventilation fan which closes the shutter, opens the damper and shutter when the circulator is in use, and closes the external shutter. 2. The air conditioning ventilation fan according to claim 1, wherein the heat transfer plate of the heat exchange element has moisture permeability. 3. The air conditioning ventilation fan according to claim 1, wherein the heat transfer plate of the heat exchange element has no hygroscopicity and is moisture impermeable.