JPS608640A - Heat-exchanging and ventilating device - Google Patents

Abstract

PURPOSE:To make compact and simplify the titled device, by providing a combined function of fan and sensible heat exchanger by means of a disc-like impeller made of impervious corrugated partition plates. CONSTITUTION:An outer and an inner supporting plates 17 and 18 which serve to support a blade 19 also blind plates segregating two different air streams passing along opposite sides of impeller 10. The rotation of impeller 10 produces two different air streams A and B respectively in grooves 21 and 22 formed in opposite sides thereof. These two air streams are withdrawn into a casing 14 through their respective air suction ports defined in the central portion of casing 14. These air streams then enter into a cylindrical counter flow heat exchanger 13 through opposite sides of rotary axial direction of heat exchanger for their subsequential sensible heat exchange. Then, the air streams exits from the outer periphery of counter flow heat exchanger 13 and have their temperatures exchanged during passage through the blade 19 of impeller 10. Finally, the airs are exhausted outside the casing 8 through respective outlets difined in the outer periphery of casing 14.

Description

[Detailed description of the invention] Industrial applications The present invention relates to improvements in heat exchange ventilation equipment.

Conventional configurations and their problems Conventionally, there are two types of sensible heat exchangers used in air conditioning ventilation fans to reduce heat loss due to ventilation: plate type and heat storage rotary type. In order to perform this function, in addition to the sensible heat exchanger, two blowing fans are required at the same time. Therefore, the device becomes large and expensive. FIG. 1 is an example of a schematic configuration diagram of a conventional air conditioning ventilation fan using such a sensible heat exchanger. In FIG. 1, 1 and 2 are an air supply fan and an exhaust fan, respectively. 3 is a plate type sensible heat exchanger, 4 is a fan motor,
5 is a separator that separates the supply and exhaust solid air flow, 6 is the rotating shaft of the fan, 7 is the casing of the ventilation fan, 8 is the wall surface, and 9 is the front louver. The air supply fan 1 and the exhaust fan 2 are rotated by the motor 4 . The airflow from the air supply fan 1 is discharged indoors via the sensible heat exchanger 3, and the indoor air is discharged outdoors via the sensible heat exchanger 3 by the exhaust fan 2.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned drawbacks of the prior art and provides a compact and inexpensive heat exchange ventilation system.

Structure of the Invention A plurality of ridges and grooves extending radially outward from the rotation center side are arranged alternately in the circumferential direction, and on both sides, the ridges and grooves are on one side and the other side is arranged. The component is a disc-shaped impeller consisting of moisture-impermeable wave-shaped partition plates each having grooves and peaks, and as this impeller rotates around its rotation axis, the above-mentioned areas on both sides of the impeller are A non-transparent heat exchanger is installed on the rotation center side of a heat exchanger with a double-blade blower function, which is configured to generate two different air flows in the groove portion and to exchange temperature between the two air flows through the partition plate of the impeller. A cylindrical counterflow sensible heat exchanger consisting of a wet partition plate is arranged such that the center axis of the cylinder is aligned with the rotation axis of the double-blade ventilation sensible heat exchanger, and the axial direction of the cylindrical counterflow sensible heat exchanger is By incorporating the two air flows sucked into the heat exchanger from each opening, exchanging heat in counterflow, and then being sent to the impeller, the functions of conventional blowers and heat exchangers can be improved. Not only can it be used independently, but it also simplifies the air path, contributing to the downsizing and cost reduction of equipment.

Description of examples Embodiments of the present invention will be described below with reference to the drawings.

Fig. 2 is a schematic perspective view of an impeller constituting a Yamakasa air blower sensible heat exchanger used in an embodiment of the present invention, and Fig. 3 is a trajectory of a cylindrical counterflow sensible heat exchanger. Fig. 4 is a partially cutaway perspective view of a heat exchange ventilation system according to an embodiment of the present invention. It shows
Both rotate around the same axis of rotation. FIG. 5 is a schematic diagram of this configuration. In the figure, reference numeral 19 denotes a wave-shaped blade, which has a plurality of grooves extending radially outward from the rotation center side, and is held between the counterflow heat exchanger 13 and the outer circumferential plate 2o. The material of this blade 19 has a thickness of 0.2 M.
It is made of plastic plates with a total of 100 blades and the height of each blade is 50 mm. Impeller (
The impeller 10 has an outer diameter of φ300 am and is mainly composed of a counterflow heat exchanger 13, blades 19, and an outer peripheral plate 20.

In addition to holding the blade 10 portion between the outer peripheral plate 20 and the counterflow heat exchanger 13, the outer peripheral plate 20 also has the role of separating two different air currents on both sides of the impeller 1o.

The material of the partition plate of the counterflow heat exchanger 13 is also 0.2 in thickness.
It's a plastic plate on the side. 14 is a casing surrounding the impeller 10. Airflow inlet 1 in the center, similar to normal sirocco fans and turbo fans.
5 and a part of the outer circumferential direction thereof has an airflow outlet 16. Reference numeral 11 denotes a separator (partition plate) which is a part of the casing 14 and, together with the outer circumferential plate 20, serves to prevent mixing between the two air streams on both sides of the impeller 100. In the case of the present invention, the suction port and the discharge port of the casing regarding the same airflow are located on opposite sides of the separator 11. This is because there is a counterflow heat exchanger 13 in the center. Casing 14 and separator 11
Although metal is used as the material in this embodiment, any material may be used as long as it is strong and easy to process.

12 is a total heat exchanger with double-blade blowing function, that is, an impeller 10
This is a rotation axis common to the cylindrical counterflow sensible heat exchanger 13.

In principle, the heat exchanger 13 does not rotate and the impeller 1
A configuration in which only 0 rotates may be used. 17 and 18
are an outer support plate and an inner support plate that support the blades 19, respectively;
It is also a blind plate that airtightly separates two different airflows. Note that these outer peripheral plates 20. Although resin is used as the material for the outer support plate 17 and the inner support plate 18 in this embodiment, any strong material such as metal may be used.

In a sensible heat exchanger with a blower function that has the structure described above,
As the impeller 1o rotates, different air currents flow in the grooves 21 and 22 on both sides thereof. A and B in FIG. 4 show the flow of both air currents, respectively. Both air flows sucked into the casing 14 from the respective suction ports in the center of the casing 14 enter the cylindrical counterflow heat exchanger 13 from both sides in the rotational axis direction, and after exchanging sensible heat with each other, After exiting from the outer periphery of the counterflow heat exchanger 13 and exchanging temperatures again with each other through the blades 19 of the impeller 1o, the heat is discharged from the respective discharge ports on the outer periphery of the casing 14 to the outside of the casing 8. Ru.

In addition, when using the airflow at 33°C and the airflow at 26°C as the airflows mentioned above, and the air volume is set to 2 to 71"/m, the efficiency obtained by using the sensible heat exchanger with air blowing function of this example is as follows. The measured value was 60% in terms of sensible heat exchange efficiency. Figure 6 shows a perspective view of another example of the impeller. This is because the plurality of grooves are located radially in a straight line from the rotation center side. This is an example of a wave-shaped partition plate.

FIG. 7 shows the sensible heat exchanger shown in FIGS. 4 and 6, and when the motor 23 rotates, the impeller 1o rotates via the shaft 27, and air is sucked in from the outdoor side and enters the counterflow heat exchanger 5. At the same time, air from the indoor side is taken into the counterflow heat exchanger 13, and heat is exchanged between the airflows from inside and outside the room in the counterflow. Thereafter, the airflow coming out of the counterflow heat exchanger 13 is transferred to the impeller 10.
Sensible heat is exchanged via In addition, 24 is a front louver, 11
25 is a separator that separates the supply and exhaust airflow, and 25 is a ventilation fan louver in contact with the wall 26.

In this case, since the conventional air supply fan, exhaust fan, and sensible heat exchanger are integrated, the device is small, simple, and inexpensive.

In addition, in the above embodiment, both the corrugated plate of the impeller 1o and the partition plate of the counterflow heat exchanger 13 were non-permeable, but in a configuration in which the counterflow heat exchanger and the impeller are combined, the counterflow heat exchanger The corrugated plates of the impeller may be moisture permeable, since they contribute to the majority of the heat exchange.

Effects of the Invention As described above, the heat exchange ventilation system of the present invention does not require a separate blower and functions as both a blower and a sensible heat exchanger. Small, simple and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a conventional air conditioning ventilation fan using a plate-type sensible heat exchanger, and FIG. 2 is a schematic perspective view of an impeller, which is a component of a heat exchange ventilation system according to an embodiment of the present invention.
FIG. 3 is a schematic external view of a cylindrical counterflow sensible heat exchanger that is the same component, FIG. 4 is a partially cutaway perspective view of a heat exchanger of a heat exchange ventilation system according to an embodiment of the present invention, and FIG. FIG. 6 is a perspective view of another embodiment of the impeller, and FIG. 7 is a schematic diagram of a heat exchange ventilation system according to an embodiment of the present invention. 10... Impeller, 12... Rotating shaft,
13... Counterflow heat exchanger, 15... Inlet, 16... Outlet 810 Name of agent Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 8 Figure 3 Figure 4! ? Figure 5 Figure 6

Claims (1)

[Scope of Claims] (1) A plurality of ridges and grooves extending radially outward from the rotation center side are arranged alternately in the circumferential direction, and on both sides thereof, a ridge and groove portion on one side. However, on the other side, there is a disc-shaped impeller consisting of a moisture-impermeable wave-shaped partition plate with grooves and peaks, respectively.
A cylindrical counterflow sensible heat exchanger having a moisture-impermeable partition plate passing through the medium heat section of the impeller is provided, and both end surfaces of the sensible heat exchanger have respective intake ports, and the impeller is rotated. By doing so, the airflow entering from the intake port at one end is guided to one side of the corrugated plate of the impeller, and the airflow entering from the intake port at the other end of AiJ is guided to the other side of the corrugated plate of the impeller,
A heat exchange ventilation device characterized in that airflows entering from both intake ports of the sensible heat exchanger are subjected to sensible heat exchange in counterflow without being directly liquidized, and further heat exchanged via the corrugated plate of the impeller. 0(2) The heat exchange ventilation system according to claim 1, wherein the impeller and the cylindrical counterflow sensible heat exchanger rotate on the same rotation axis. (3) The heat exchange ventilation system according to claim 1, wherein the cylindrical counterflow sensible heat exchanger does not rotate, and only the impeller rotates.