JPS6038620B2 - heat exchange ventilation fan - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a heat exchange type ventilation fan.

2. Description of the Related Art Conventionally, a simultaneous supply and exhaust type ventilation fan such as a heat exchange type ventilation fan has an exhaust passage 101 and an air supply passage 1, as shown in FIG.
02 are provided independently, and in order to ventilate each passage, the motor 103 is made into a double-shaft type, and exhaust vanes 1 are installed at both ends of the motor 103.
04 and air supply vanes 105 are attached.

Problems to be Solved by the Invention This configuration has the disadvantage that there is a gap between the two blades (equivalent to the length of the motor), and the main body of the device becomes larger by that amount.

On the other hand, since the resistances of the exhaust passage 101 and the air supply passage 102 are not necessarily the same, in order to set the ratio of the exhaust air volume and the supply air volume to an arbitrary ratio, the exhaust air blade 104 and the air supply air blade 1
I had to adjust the air volume by changing the diameter or thickness of the 05. For this reason, blades of the same size cannot be used, two molds are required, and processing costs increase. The present invention takes into consideration the above-mentioned conventional problems, and can be manufactured at low cost with one mold without increasing the size of the blade structure, and when assembled, prevents leakage from gaps against the partition wall of the flow path. It is an object of the present invention to provide a heat exchange type ventilation fan that prevents the occurrence of heat exchange.

Means for Solving the Problems In order to achieve the above object, the heat exchange type ventilation fan of the present invention includes:
A partition wall separating the exhaust passage and the air supply passage, a heat exchange element provided at the intersection of the exhaust passage and the air supply passage, an exhaust vane for blowing air into the exhaust passage, and a fan for blowing air into the air supply passage. It has air supply vanes integrally molded with resin on both sides of a partition plate, and a motor for rotating them, and either the exhaust vane or the air supply vane has a diameter larger than the other. The partition plate has a diameter equal to or larger than the maximum outer diameter of each of the blades, and the partition wall is provided to overlap the partition plate.

Function The heat exchange type ventilation fan with the above configuration has two blades whose diameters have been changed in advance to suit the air volume and passage resistance, and which are integrated, making it compact and can be formed with one mold. Since the partition plate in the stepped portion can be combined so as to overlap the partition walls of the two channels, no leakage occurs in the blade portions of the two channels.

EXAMPLES Examples of the present invention will be described below with reference to FIGS. 2 to 6.

In FIGS. 2 and 3, reference numeral 1 denotes a main body that partitions an exhaust passage 2 and an air supply passage 3, and a heat exchange element 4 is provided at the intersection of the exhaust passage 2 and the air supply passage 3. The exhaust passage 2 is provided with exhaust vanes 5 for blowing air,
Further, the air supply passage 3 is provided with air supply vanes 6 for blowing air. The exhaust vanes 5 and the air supply vanes 6 have different diameters, are separated by a partition plate, and are integrally molded from synthetic resin. This integrally molded blade is Moyu 8
It can be rotated with Near the partition plate 7, an exhaust passage 2 and an air supply passage 3 are arranged so as to overlap with the partition plate 7.
A partition wall 9 is provided to partition the area. In the figure, 1 indicates the indoor suction port of the exhaust passage 2, 11 indicates the indoor discharge port of the air supply passage 3, 12 indicates the outdoor discharge port of the exhaust passage 2, and 13 indicates the outdoor suction port of the air supply passage. be. In the above configuration, when the motor 8 rotates the exhaust vane 6 and the striped air vane 7, the indoor air sucked from the indoor suction row 0 of the exhaust passage 2 flows through the exhaust passage 2 from A to A'. The outside air passes through the heat exchange element 4, is discharged to the outside from the outdoor side discharge port 12, and is sucked in from the outdoor side suction row 3 of the air supply passage 3.
As shown in B', the air passes through the air supply passage 3, passes through the heat exchange element 4, and is discharged to the outside from the indoor discharge port 11.

At this time, heat exchange is continuously performed inside the heat exchange element 4. In this case, even if the resistance of the exhaust passage 2 and the resistance of the air supply passage 3 are not the same, the diameter of one of the blades is changed accordingly, so that air can be conveniently blown. In addition, there is a partition plate in the step between the two blades, and it is provided so that the partition plate overlaps with the partition wall that partitions the exhaust passage and the air supply passage, so that the air in the exhaust passage and the air supply passage mix. This allows for stable ventilation. FIG. 4 shows another embodiment of the present invention, in which the diameter of the air supply vane 6 is made larger than that of the exhaust vane 5, and a step is provided on the partition plate 7 at the outer circumference of the air supply vane. Since the partition wall 9 is arranged to face the partition wall 9 and overlap the partition plate 7, wind pressure is not applied to the partition wall portion, and separation of exhaust air and supply air is more reliable.

FIG. 5 shows yet another embodiment, in which the diameter of the exhaust vane 5 is made smaller than that of the air supply vane 6, a step is provided on the partition plate 7 at the outer circumference of the exhaust vane, and a partition wall is formed on the step. Since the partition walls 9 are arranged to face each other and overlap with the partition plate 7, wind pressure is not applied to the partition wall portion, and separation of exhaust air and supply air is more reliable.

FIG. 6 shows yet another embodiment, in which the diameter of the air supply vane 6 is made larger than that of the exhaust vane 5, and the exhaust vane 5 is made larger in diameter than the exhaust vane 5.
A groove of the same diameter as the blade is provided in the partition plate 7 between the outer periphery of the air supply blade 6 and the outer periphery of the air supply blade 6, and the partition wall is placed in the groove to face the partition plate 7 and overlap with the partition plate 7. Separation of exhaust air and supply air is ensured.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, only one blade is required for a simultaneous supply scarlet type ventilation fan such as a heat exchange type ventilation fan, the manufacturing cost is low, and the diameter can be reduced. By providing the partition plates between different blades and the partition walls that partition the exhaust passage and the air supply passage so as to overlap, it is possible to prevent the exhaust passage and the air supply passage from mixing.

[Brief explanation of the drawing]

1 is a plan sectional view of a conventional example, FIG. 2 is a plan sectional view of an embodiment of the present invention, FIG. 3 is a sectional view taken along line CC' in FIG. 2, and FIGS. FIG. 7 is a plan sectional view of a blade and a partition wall according to another embodiment of the invention. 1...Main body, 2...Exhaust passage, 3...Air supply passage, 4...Heat exchange element, 5...Exhaust vane,
6... Air supply vane, 7... Partition plate, 8...
...Motor, 9...Bulkhead. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A partition wall that partitions the exhaust passage and the air supply passage, a heat exchange element provided at the intersection of the exhaust passage and the air supply passage, an exhaust vane for blowing air into the exhaust passage, and air blowing to the air supply passage. It has synthetic resin air supply blades integrally formed on both sides of the partition plate, and a motor for rotating the blades. The heat exchange ventilation fan is large in size, the partition plate has a diameter equal to or larger than the maximum outer diameter of each blade, and the partition wall is provided so as to overlap the partition plate.