JPS6342169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioning ventilation fan, and an object of the present invention is to enable a heat exchange element to be moved by reliably dividing a supply air passage and an exhaust air passage at predetermined time intervals;
We aim to improve heat exchange efficiency, improve the durability of heat exchange elements, and increase ventilation air volume by performing forced simultaneous supply and exhaust without heat exchange during periods when heating and cooling are not performed.
The objective is to use it as a circulator during heating and cooling to improve the effectiveness of heating and cooling.

Conventionally, as shown in FIG. 1, an air conditioning ventilation fan has a heat exchange element 101 disposed at the intersection of an exhaust ventilation path and an air supply ventilation path, and exhaust vanes 102 and supply air vanes 10.
The heat exchange element 1 is rotated by the motor 104.
01 was used for heat exchange. The heat exchange element 10
The heat transfer plate No. 1 is generally made of moisture-permeable paper, etc., but the thermal conductivity of paper is originally low, and
Since humidity was being exchanged through the paper, the heat exchange rate was not high enough, and dust in the exhaust air and air supply adhered to the surface of the paper, reducing the thermal conductivity and humidity exchange rate. Ta. Therefore, the heat exchange element 101
A filter 105 was installed at the inlet of the exhaust air and supply air to remove dust, but minute particles passed through the filter 105, resulting in a decrease in the heat exchange rate as described above, and the filter 105 itself This was not desirable because it would create resistance. The air conditioning ventilation fan performs its function during cooling and heating, but in the intermediate seasons of spring and autumn, even though there is no need for heat exchange, exhaust air and supply air pass through the heat exchange element 101, so the original air conditioning ventilation fan is not used. The air volume of the blower cannot be used effectively, and conventional air conditioning ventilation fans can only perform total heat exchange ventilation or sensible heat exchange ventilation. For example, in basements, etc., total heat exchange ventilation is usually sufficient, but humidity increases in the summer and sensible heat exchange ventilation is necessary.
It had the disadvantage of not being able to do that. Also, 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 one embodiment thereof will be described below with reference to FIGS. 2 to 6.

In FIGS. 2 to 4, 1 is a main body, which has an outdoor side suction port 2 and an outdoor side discharge port 3 at the rear, and an internal partition plate 4 provided with the outdoor side suction port 2 and the outdoor side discharge port. It separates the passage leading to 3. A louver 5 having an indoor lower opening 6 and an indoor upper opening 7 is fitted into the front part of the main body 1. Inside the main body 1, there is an indoor lower opening 6 and an outdoor outlet 3.
and an air supply passage communicating between the indoor upper opening 7 and the outdoor suction port 2, and a heat exchange element 8 is provided at the intersection of the exhaust passage and the intake passage.
has been set up. The heat exchange element 8 has a rotating shaft 9 and is rotated by a motor 10 and held at a predetermined position. The heat exchange element 8 is constructed by alternately laminating heat transfer plates 11 having moisture absorbing material on both sides of a moisture-impermeable material and spacing plates 12 having moisture absorption properties. In the main body 1, partition plates 13a, 13b, 13d, and 14 are provided that are in contact with each of the four ridges of the cubic heat exchange element 8,
These partition plates constitute a crossing passage.
The partition plate 13d is movable in the angle direction relative to the rotation axis 9 of the heat exchange element 8 while being in contact with the partition plate 13c by being biased by a spring (not shown) or the like. Further, a motor 19 is provided within the main body 1, and an exhaust vane 15 and an air supply vane 17 coupled to the motor 19 are located in an exhaust passage and an intake passage. In the figure, 16 is an exhaust casing, and 18 is an air supply casing.

FIG. 3 shows a state in which the heat exchange element 8 having the above structure is supported in the first position, A→A' indicates the exhaust ventilation path, and indoor air is supplied to the lower indoor opening of the louver 5.
from the heat exchange element 8 to the exhaust casing 16
Exhaust vane 15 rotated by motor 19 through
As a result, the air is exhausted to the outside from the outdoor discharge port 3 of the main body 1.

In addition, B...>B' indicates the air supply ventilation path, and outside air is passed from the outdoor side suction port 2 of the main body 1 to the air supply casing 1.
Air supply vane 1 rotated by motor 19 via 8
7, the air enters the heat exchange element 8 and is supplied into the room from the upper opening 7 on the indoor side of the louver 5.

In this way, indoor air flows along exhaust passage A→A', outside air flows along supply air passage B...>B', and sensible heat and latent heat (moisture) are exchanged in heat exchange element 8. However, the details will be described 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', and passes through the heat exchange plate 11 of the heat exchange element 8.
Sensible heat is taken away from the outside air supplied into the room along the air supply ventilation path B...>B', and moisture is desorbed from the moisture absorption material of the heat exchanger plate 11 and the spacer plate 12, resulting in high temperature and high humidity. Exhausted outdoors. In this case, desorption heat (negative due to an endothermic reaction) is generated, which exchanges heat with the outside air and lowers the temperature of the high-temperature indoor air. Sensible heat is taken away from the exposed outside air and used effectively. On the other hand, the outside air, which is hotter and more humid than the indoor air that entered the heat exchange element 8 along the supply air passage B...>B', passes through the heat exchanger plate 11 of the heat exchange element 8 to the exhaust air passage A. Sensible heat is imparted to the indoor air exhausted outside along →A', and moisture is adsorbed by the moisture absorbing material of the heat exchanger plate 11 and the spacing plate 12, and the air is supplied into the room at a low temperature and low humidity. In this case, adsorption heat is generated, which exchanges heat with the indoor air and raises the temperature of the low-temperature outside air, but this adverse effect is imparted as sensible heat to the indoor air exhausted through the heat exchanger plate 11. This will be resolved.

Next, when the adsorption and desorption of moisture in the moisture absorbing material of the heat transfer plate 11 and the spacer plate 12 reaches near saturation, the heat exchange element 8 is moved by the motor 10 around the rotating shaft 9.
When rotated 90 degrees and held, the outside air will pass through the layer of the heat exchange element 8 through which indoor air had passed before rotation, and the heat exchanger plate 11 in this layer, which is low temperature and low humidity due to the indoor air, will Sensible heat of the outside air is taken away by the spacer plate 12, moisture is adsorbed, and the air is supplied into the room at a lower temperature and lower humidity than the outside air. The sensible heat soon accumulates in the heat transfer plate 11 and the spacer plate 12, becomes saturated, and is transferred to the indoor air exhausted outside by the heat transfer plate 11.
It will be stolen through. In addition, heat of adsorption of moisture is generated, which is given to the indoor air exhausted through the heat exchanger plate 11 in the same manner as described above.

On the other hand, indoor air will pass through the layer of the heat exchange element 8 through which the outside air has passed, and the indoor air will pass through the heat exchanger plate 11 and spacing plate 12 of this layer, which has become high temperature and high humidity due to the outside air. Sensible heat is applied to the air, moisture is desorbed, and the air becomes hotter and more humid than indoor air and is discharged outdoors. Then, the sensible heat stored in the heat transfer plate 11 and the spacer plate 12 is soon radiated, and the sensible heat is taken away from the outside air supplied into the room via the heat transfer plate 11. Further, heat of desorption of moisture (negative due to endothermic reaction) is generated, but this is used effectively as sensible heat is taken away from the outside air supplied via the heat exchanger plate 11 as described above.

This operation is repeated to perform total heat exchange ventilation between indoor air and outdoor air, but sensible heat can be exchanged not only through the heat transfer plate 11 but also through heat storage and heat radiation. Moisture exchange is performed by adsorption and desorption between the moisture absorbing material of the heat transfer plate 11 and the spacing plate 12, and the heat of adsorption and desorption can also be used effectively through the heat transfer plate 11, eliminating its harmful effects. Compared to exchanging sensible heat and moisture through a heat transfer plate that has moisture permeability, the total heat exchange rate is considerably improved. Note that during heating, the total heat exchange rate is improved by the same effect.

In addition, in the exhaust ventilation path and the supply air ventilation path,
Even if dust adheres to the end face of the heat exchange element 8 which used to be the inlet, the rotation of the heat exchange element 8 acts as the outlet and blows off the dust. By rotating the element 8, the direction of the air on the heat exchanger plate 11 is reversed, so that even minute dust does not adhere and accumulate, which can occur due to clogging of the end face of the heat exchange element 8 and the heat exchanger plate due to dust. This has the advantage that it is possible to prevent a decrease in air volume and heat exchange rate, eliminates the need for a filter, and requires almost no cleaning.

In addition, unless the heat exchange element 8 is rotated, moisture will not be exchanged and only sensible heat will be exchanged. This makes it possible to provide ventilation that lowers humidity while maintaining the basement's low temperature, which is highly effective.

5 and 6 show another state of this embodiment, in which the heat exchange element 8 is stopped and held at a position rotated approximately 45 degrees from the first position and supported at the second position. It is in good condition and the movable partition plate 13
d moves at right angles to the rotation axis 9 of the heat exchange element 8 while contacting the partition plate 13c, contacts the end face of the heat exchange element 8, and connects the exhaust ventilation path X→X' and the supply air ventilation path Y...>
Partition Y′. As a result, an exhaust opening 20 is formed by the end surface of the heat exchange element 8 and the partition plate 13b, and an air supply opening 21 is formed by the end surface of the heat exchange element 8 and the partition plate 13a.

In the above state, indoor air flows from the indoor upper opening 7 of the louver 5, without passing through the heat exchange element 8, through the exhaust opening 20, and from the exhaust casing 16 through the exhaust vane 15 to the outdoor outlet. 3
It is exhausted from outside. On the other hand, the outside air is arrow Y-
As shown in Y', the heat exchange element 8 is connected to the air supply vane 17 from the outdoor suction port 2 through the air supply casing 18.
Air is supplied into the room from the indoor lower opening 6 of the louver 5 through the air supply opening 21 without passing through the air.

For this reason, indoor air can be forced to be simultaneously supplied and ventilated without passing through the heat exchange element 8, which is a considerable resistance in the exhaust ventilation path and the air supply ventilation path, so the air volume that the blower originally has can be used effectively during the spring and autumn seasons. Especially before and after the cooling season, it is also possible to use outside air for cooling.

7 to 11 show other embodiments, and the same numbers indicate the same parts as in the first embodiment. Figure 7~
In FIG. 11, reference numeral 22 denotes a circulation opening provided in the partition plate 4, which communicates the exhaust ventilation path X→X' with the supply air ventilation path Y...>Y'. 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. As shown in FIGS. 7 and 8, when the shutter 23 is opened, the outdoor side suction port 2 and the outdoor side discharge port 3 are opened to the outside air by the external shutter 25, and the circulation opening 22 is closed by the internal shutter 26. . As shown in FIGS. 9 and 10, when the shutter 23 is closed, the outdoor side suction port 2 and the outdoor side discharge port 3 are closed by the external shutter 25 and are isolated from the outside air, and the internal shutter 26 closes the outdoor side suction port 2 and the outdoor side discharge port 3, and the circulation opening 22 is closed by the internal shutter 26. will be released.

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 path X→
X' and the supply air passage Y...>Y' are in communication, and the indoor air is sent from the indoor upper opening 7 through the exhaust opening 20 and from the exhaust casing 16 to the circulation opening 22 by the exhaust vane 15. After that, the air supply opening 21 is opened from the air supply casing 18 by the air supply blade 17.
It is then discharged into the room from the lower opening 6 on the indoor side.

Therefore, it has the function of a circulator, and for example, during heating, warm air that has accumulated near the ceiling can be blown downward.
Discomfort caused by uneven temperature distribution can be eliminated, and the heating effect can be improved.

Note that in the first embodiment of the present invention, the heat exchange element 8
The heat exchanger plate 11 is made of a moisture-impermeable material with moisture absorbing material on both sides. However, if it is made of a moisture-permeable material, sensible heat and moisture can be exchanged through the heat exchanger plate 11, and the first The heat exchange efficiency is improved compared to exchanging only sensible heat through a heat exchanger plate as in the embodiment. If the heat exchange element 8 is stationary as in the past, sensible heat and moisture are exchanged only through the heat exchanger plate, but according to the present invention, the heat exchange element 8 rotates and the heat exchanger plate 11 and the spacer plate 12, exchange is performed by heat storage and radiation and adsorption and desorption of moisture, resulting in an advantage of improved efficiency.

In addition, the heat exchanger plate 11 and the spacing plate 12 of the heat exchange element 8
If it is made of a moisture-impermeable material, only sensible heat is exchanged via the heat exchanger plate 11, and when the heat exchange element 8 is rotated, the heat is stored and released by the heat exchanger plate 11 and the spacer plate 12 as described above. The heat exchange rate is improved and there is no exchange of moisture, so for example, it can discharge moisture like a bathroom and protect it from moisture damage, and it can also recover the sensible heat released outside by exhaust air. This is extremely effective when it is necessary to keep the bathroom warm.

As explained in the above embodiments, according to the present invention, the heat exchange element can be moved between the first position and the second position at predetermined time intervals, so it can function as a normal ventilation fan. In addition to having the function of an air conditioning ventilation fan, the heat exchange element can also be rotated, making it possible to replace the exhaust ventilation path and the supply air ventilation path within the heat exchange element, improving the heat exchange efficiency and increasing heat exchange efficiency. It is possible to prevent dust from accumulating on the exchange element, eliminate the need for a filter, prevent a decrease in heat exchange efficiency and air volume due to accumulation of dust, and improve the durability of the heat exchange element. At any position of the heat exchange element, the movable partition plate contacts the heat exchange element to reliably partition the supply air passage and the exhaust air passage, so each of the above functions is fully performed. It will be demonstrated.

[Brief explanation of the drawing]

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, FIG. 3 is a side sectional view, and FIG. 4 is a perspective view of the heat exchange element. FIG. 5 is a plan sectional view showing another state of the same embodiment of the present invention, FIG. 6 is a side sectional view of the same, and FIG. 7 is a second embodiment of the present invention.
8 is a side sectional view, FIG. 9 is a plan sectional view when the shutter is closed, FIG. 10 is a side sectional view, and FIG. 11 is a perspective view of the same shutter. It is. DESCRIPTION OF SYMBOLS 1... Main body, 2... Outdoor side suction port, 3... Outdoor side discharge port, 6... Indoor side lower opening, 7... Indoor side upper opening, 8... Heat exchange element, 10... Motor,
11... Heat transfer plate, 12... Spacing plate, 15... Exhaust vane, 17... Air supply vane, 20... Motor,
23... Shutter.

Claims (1)

[Scope of Claims] 1. A main body 1 having an exhaust ventilation passage that communicates between the indoor lower opening 6 and the outdoor outlet 3, and a supply air passage that communicates the indoor upper opening 7 and the outdoor suction port 2; It is constructed by arranging a plurality of blades 15 for blowing air to the exhaust ventilation path, blades 17 for blowing air to the supply air ventilation path, a motor 10 for rotating them, and a plurality of heat transfer plates 11 at predetermined intervals. A heat exchange element 8 provided at the intersection of the exhaust air passage and the air supply air passage, and a movable element biased by a spring or the like so as to come into contact with the heat exchange element 8 and partition the air supply air passage and the exhaust air air passage. partition plate 13d, and the heat exchange element 8
constitutes at least two independent and adjacent air passages partitioned by the heat exchanger plate 11, one of which forms part of the exhaust ventilation passage, and the other passage forms part of the supply air ventilation passage. The heat exchange element 8 rotates around the rotation axis 9 of the heat exchange element 8, communicates the indoor side lower opening 6 with the outdoor side suction port 2, and connects the indoor side upper opening 7 with the indoor side suction port 2. An air conditioning ventilation fan movably supported at a second position communicating with the outer discharge port 3. 2. A main body 1 having an exhaust ventilation passage that communicates between the indoor lower opening 6 and the outdoor outlet 3 and a supply air passage that communicates the indoor upper opening 7 and the outdoor suction port 2; It is configured by providing a plurality of blades 15 for blowing air to the exhaust ventilation path, blades 17 for blowing air to the air supply ventilation path, a motor for rotating them, and a plurality of heat transfer plates 11 at predetermined intervals, and A heat exchange element 8 rotatably provided at a portion where the ventilation paths intersect and can be stopped at any position;
It has a movable partition plate 13d that is urged by a spring or the like to come into contact with the heat exchange element 8 and partitions the supply air ventilation path and the exhaust air ventilation path, and the heat exchange element 8 is attached to the heat transfer plate 11. at least two adjacent and independent air passages partitioned by the air passages, and at least a position where one of the passages becomes a part of the exhaust ventilation passage and the other passage forms a part of the supply air ventilation passage. Air conditioning ventilation fan supported so that it can be removed.