JPS608641A - Heat-exchanging ventilation device - Google Patents

Abstract

PURPOSE:To make compact the titled device, by providing a single device with a combined function of heat exchanger and a fan. CONSTITUTION:A blade 10 is erected at the edge of air passage outlet defined in the outer periphery of cylinder. The rotation of heat exchanger 12 about a rotation axis 13 serves to withdraw two air streams 14 and 15 into a heat exchanger 12 through respective axial edges. These two air streams have their heat exchanged by respective counter flows and are then exhausted ouside the heat exchanger through outlets 11 defined at the right and left side of outer periphery of cylinder. The heat exchanger of this structure provides the function of sensible heat exchanger, when a water impermeable plastic partition plate is used for segregating two air counterflows inside the heat exchanger. The function of total heat exchanger is also available, when the partition plate is made of water permeable material such as a paper.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a heat exchange ventilation system that reduces heat loss during ventilation.

Conventional configurations and their problems Conventionally, there are two types of heat exchangers used in air conditioning ventilation fans to reduce heat loss due to ventilation: plate type and heat storage rotating type. They are used as total heat exchangers and sensible heat exchangers depending on whether they are moisture permeable or non-permeable. In either case, in order to perform its function as a heat exchange device, two devices are required in addition to the heat exchanger.
Two blower 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 heat exchanger.

In FIG. 1, 1 and 2 are an air supply fan and an exhaust fan, respectively. 3 is a plate heat exchanger, 4 is a fan motor, 5 is a separator that separates both supply and exhaust air flows, 6
is the rotating shaft of the fan, 7 is the casing of the ventilation fan, 8 is the wall surface, 9 is the front louver, and 1o is the separator. motor 4
Accordingly, the air supply fan 1 and the exhaust fan 2 are rotated. The airflow from the air supply fan 1 is exhausted to the outside by the exhaust fan 2 via the heat 1 exchanger 3.

OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the drawbacks of the above-mentioned conventional examples and to provide a small and inexpensive heat exchange ventilation system in which a heat exchanger has an air blowing function.

Structure of the Invention Different air flows enter the heat exchanger from two axially opposing end surfaces of the cylinder, exchange heat with each other in counterflow, and then exit the heat exchanger in the circumferential direction from the outlet on the outer periphery. A cylindrical counterflow heat exchanger having an air passage, or the structure of the cylindrical counterflow heat exchanger is a hollow cylinder, and the air passage is an axially opposing end surface of the hollow cylindrical heat exchanger. Seven pallets are provided to prevent the different airflows entering the inner cylinder from mixing in the hollow part, and the mountain airflows entering the heat exchanger from the inner cylinder in the axial direction and in the intersecting direction. In a cylindrical counterflow heat exchanger having an air passage that exits outside the heat exchanger from an outlet on the outer circumference after heat exchange is performed in counterflow inside the heat exchanger, both or one of the mountain air flows on the outer circumference By setting blades at the outlet of the air passage and rotating the heat exchanger with the central axis of the cylinder as the rotation axis, airflow is drawn into the heat exchanger from the two end faces of the heat exchanger, and the mountain After the airflow exchanges heat in countercurrents, it is discharged to the outside of the heat exchanger from the circumferential outlet.

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

FIG. 2 is a schematic external view of a conventional cylindrical counterflow heat exchanger, which is also a component of the heat exchange ventilation system of the present invention. Third
The figure is a schematic external view of a heat exchanger in an embodiment of the heat exchange ventilation system of the present invention. FIG. 4 is a schematic view of the cylinder shown in FIG. 3 as seen from the end surface in the axial direction, and 1o is a blade set up on the heel of the air passage outlet 11 on the outer periphery of the cylinder shown in FIG. 1
3 is a rotating shaft, and as the heat exchanger 12 rotates around this shaft, two air flows 14 and 16 are sucked into the heat exchanger 12 from each end face in the axial direction, and are drawn into the heat exchanger 12 from each end face in the axial direction. After exchanging heat in the counterflow, they are discharged to the outside of the heat exchanger from the outlets 11 (right side in FIG. 3) and 11 (left side in FIG. 3) located on the outer periphery of the cylinder, respectively. FIG. 5 is a schematic cross-sectional view of the heat exchanger showing the flow paths of these air flows.

In the case of a heat exchanger with such a structure, if a non-moisture-permeable plastic plate is used as the partition plate that separates the mountain air flow in the opposite flow in the heat exchanger, as in the case of this example, It functions as a heat exchanger, and if the partition plate is made of a moisture-permeable material such as paper, it functions as a total heat exchanger.

Note that the blades 1o do not have to be independent as in the embodiment, but may be connected to each other by a ring 16 as shown in FIG. 6 in order to provide strength.

FIG. 7 shows a case where the cylindrical counterflow heat exchanger according to the embodiment of the present invention is made into a hollow cylinder, and FIG. 8 is a schematic cross-sectional view showing the air flow path in this case.

Note that the same components as in FIGS. 3 and 4 are given the same numbers. In the figure, 17 is a hollow part of the cylinder, and 11' is an air inlet in the hollow part. Reference numeral 18 is a separator provided in the heat exchanger to prevent the mountain air flows 14 and 15 from mixing.

FIG. 9 is a configuration diagram of a heat exchange ventilation system according to an embodiment of the present invention;
In the figure, 22 is a wall, 23 is a cylindrical counterflow claw heat exchanger, 2
4 is a casing, 18, 21.21' is a separator,
2o is a motor that rotates the heat exchanger 23, 1o is a blade, and 13 is a rotating shaft of the heat exchanger. Rotation speed 210o
When set to revolutions/min, approximately 2 i1'l'/rn
An air volume of ln was obtained. Also, the indoor condition is 25℃.
An enthalpy exchange efficiency of 40% was obtained when the temperature outside the room was 33°C and 60°C.

As described above, by using a single heat exchanger to perform the functions of a heat exchanger and a blower, a small and inexpensive heat exchange ventilation system can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a conventional air conditioning ventilation fan, Fig. 2 is a schematic external view of a cylindrical counterflow heat exchanger, and Fig. 3 is a component of a heat exchange ventilation system according to an embodiment of the present invention. 4 is a schematic diagram of the heat exchanger shown in FIG. 3 viewed from the end surface in the cylindrical axial direction; FIG. 6 is an explanatory diagram showing the flow of air within the heat exchanger; Fig. 6 is a schematic diagram of a heat exchanger of a different embodiment as seen from the end side, Fig. 7 is a schematic diagram of the external appearance of a heat exchanger of another embodiment, and Fig. 8 is a schematic diagram of a heat exchanger of a different embodiment. FIG. 9 is an explanatory diagram showing the air flow path in the case where the heat exchanger device is a heat exchanger according to an embodiment of the present invention. 10...Blade, 11.11'...
Outlet, 12... Heat exchanger, 13... Rotating shaft, 14, 15... Air flow, 17... Hollow part. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 6
Figure 70

Claims (3)

[Claims] (1) Entry from two opposite end faces in the axial direction of the cylinder 3
A cylindrical opposed air flow path is formed in which the different air flows exit in the circumferential direction from an outlet on the outer periphery of the cylinder after exchanging heat with each other in counterflow, and a blade is provided at the outlet on the outer periphery of the cylinder. 1. A heat exchange ventilation device comprising a flow heat exchanger as a component and generating airflows passing through the heat exchanger in opposite directions by rotating the heat exchanger. (2) The heat exchanger has a hollow cylindrical structure, and a separator is provided in the hollow part to prevent different air flows entering the hollow from axially opposing end surfaces of the heat exchanger from mixing; An air path in which both air flows entering the heat exchanger from inside the hollow part in directions intersecting in the axial direction exchange heat in counterflow, and exit from the heat exchanger from an outlet on the outer periphery of the heat exchanger. A heat exchange ventilation device according to claim 1, characterized in that it has: (3) Claim 1 or 2, characterized in that the material of the partition plate of the heat exchanger is moisture permeable or moisture impermeable.
Heat exchange ventilation equipment as described in Section 1.