JPS6032509Y2 - Mounting structure of heat exchanger filter - Google Patents

Description

[Detailed description of the invention] The present invention is a device for attaching a filter to a heat exchanger in a ventilation fan that is equipped with a heat exchanger that performs heat exchange between outside air taken into a room and exhaust air discharged from the room to the outside. To prevent clogging of the heat exchanger due to dust contained in the outside air and exhaust gas, and to prevent a decrease in heat exchanger efficiency, a filter is installed closely to the edge of the outside air and exhaust inlet of the heat exchanger. The purpose is to

As shown in FIG. 4, the conventional filter mounting device is provided with a holding frame 24 having an F-shaped cross section integrally formed with a supporting part 22 that joins to the ridge 21 of the heat exchanger 20 and a groove 23 parallel to the supporting part 22. The filter 25 was installed by being inserted into the groove 23.

However, in such a mounting device, a gap A is created between the edge of the heat exchanger 20 and the filter 25.

Therefore, the outside air and exhaust gas are directly sucked into the heat exchanger 20 through this gap A, and the heat exchanger 20 is clogged with dust contained in the outside air and exhaust gas, resulting in a reduction in heat exchange efficiency. there were.

The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to FIGS. 1 to 3.

In the figure, 1 is a frame with one set of suction ports 2, 2' and one set of discharge ports 3, 3' on the indoor side and one set on the outdoor side, 4 is a partition plate, which has a space from the inner surface of one side, and has a frame body. The interior of the room is divided into an indoor side and an outdoor side.

5゜5' is a partition plate that further divides the indoor side and the outdoor side of the frame 1 into suction ports 2, 2' and discharge ports 3, 3', and one end of the partition plates 5, 5' is placed opposite to each other. , and are provided at predetermined intervals.

6 and 6' are air blowers, and 7 is a heat exchange element 10 composed of a heat permeable membrane 8 made of paper or the like with a corrugated reinforcing agent 9 interposed therebetween so as to form an air flow path. 10
This is a rectangular heat exchanger in which a shielding plate 11 is provided between the end faces of adjacent heat exchange elements 10, facing the opening face at one end.

In the heat exchanger 7, the air shown by the solid arrow that has flowed in from one end of the corrugated reinforcing agent 9 is discharged by the shielding plate 11 in a perpendicular direction.

Further, the air shown by the dotted arrow that has flowed in from one end of the corrugated reinforcing material 9 is discharged in the right angle direction by the shielding plate 11.

In other words, it is a heat exchanger that combines a counterflow type and an alternating current type.

Reference numeral 12 denotes a holding frame, which is constructed by connecting supporting pieces 13 each having a cross-sectional shape that is joined to each edge portion of the heat exchanger 7.

Reference numeral 14 denotes a cross-sectional hook formed by bending one end inward, and is integrally provided on the support piece 13 that is joined to the outer periphery of the air inflow side edge of the heat exchanger 7.

Reference numeral 15 denotes a protrusion with one end curved inward and a bulging portion 16 formed thereon, which is integrally attached to the support piece 13 joined to the outer periphery of the air inflow side edge of the heat exchanger 7 and facing the hook portion 14. It is provided.

Reference numeral 17 denotes a filter frame, which is formed to have approximately the same size as the air suction side surface of the heat exchanger 7, and has a notched recess 18 in the center of a pair of opposing frame pieces, in which the hook 14 and the protrusion 15 engage. It is provided.

In the above configuration, the filter frame 1 for the heat exchanger 7
7 is attached by first engaging the hook part 14 with the notch recess 18 of the filter frame 17, and in this state, when the filter frame 17 is pressed against the end face of the heat exchanger 7, the bulging part 16 is pushed outward by the filter frame 17. Pushed.

On the other hand, when the filter frame 17 comes into close contact with the end face of the heat exchanger 7, the force acting on the bulge 16 of the filter frame 17 is released, and the bulge 16 engages with the notch recess 18 of the filter frame 17.

Therefore, the filter frame 17 can be attached closely to the holding frame 12 formed by connecting the supporting pieces 13 that are joined to the ridge of the heat exchanger 7, and the outside air and exhaust gas can be directly sucked into the heat exchanger 7. You will no longer be caught.

Therefore, dust contained in the outside air and exhaust gas is removed by the filter.

As described above, according to the present invention, the filter provided on the air suction surface side of the heat exchanger is attached to the heat exchanger in a detachable manner, so that there is no need to pass through the filter between the heat exchanger and the filter. This eliminates the formation of an air flow path that directly flows into the heat exchanger, thereby eliminating the drawbacks of the conventional example in which the heat exchanger is clogged with dust and the heat exchange efficiency is reduced.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a ventilation fan with a heat exchanger, Fig. 2 is a perspective view of a heat exchanger and filter frame in an embodiment of the present invention, and Fig. 3 is an explanatory diagram of a ventilation fan with a heat exchanger.
This figure is a perspective view of a heat exchange element, and FIG. 4 is a perspective view showing a conventional heat exchanger filter mounting device. 7... Heat exchanger, 12... Holding frame, 1
3...Support piece, 17...Filter frame.

Claims (1)

[Scope of utility model registration request] a heat exchanger that performs heat exchange between outside air taken into the room and exhaust air discharged from the room to the outside; a holding frame configured by connecting support pieces provided at the ridge of the heat exchanger; A mounting structure for a filter for a heat exchanger, comprising a filter frame having substantially the same shape as the end face on the air inflow side of the heat exchanger, and a cross-sectional protrusion provided in a portion of the support piece corresponding to the recess of the filter frame. .