JPS6217548A - Sound insulation type air circulating device - Google Patents

Abstract

PURPOSE:To insulate sound wave without obstructing the flow of air as much as possible by a method wherein a multitude of sound insulating plates is provided in a ventilating port along the direction of thickness of a partitioning wall in parallel to the surface of the wall while respective sound insulating plates are provided with air passing slits. CONSTITUTION:The ventilating ports H are provided at the upper and the lower end of the partitioning wall G and a multitude of sound insulating plates J is provided in the ventilating port H along the direction of thickness of the partitioning wall G in parallel to the surface of the wall while respective sound insulating plates J are formed with air passing slits K. According to this method, most of the sound waves are diffracted by the slits and are attenuated in spaces between the insulating plates while resistance is not caused substantially by the insulating plates with respect to the airflow moving slowly and, therefore, the flow amount of air will never be deteriorated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to an air circulation device in a house.

[Background technology] Recently, heat harvesting wall structures or heat storage floor structures have been developed that effectively capture solar heat to provide indoor natural heating.
Accordingly, as shown in Fig. 5, attempts have been made to use natural convection to circulate the air in the rooms on the south side, where the room temperature tends to rise too much even in winter, to the rooms on the north side. In the same figure (,) or (b), A is a sunroom, B
is a room on the south side, C is a room on the north side, D is a double-glazed window, E is an attic, F is a horizontal duct, L is a heat extraction wall, and M is a heat storage floor, which separates the north and south parts IB and C. The upper end of the partition wall G,
Alternatively, vent holes H are provided at the upper and lower ends to circulate air as shown by the arrows. However, while this method can effectively utilize solar heat, it has the problem that sounds from audio equipment in adjacent rooms tend to leak through the vents H, resulting in poor sound insulation between rooms.

[Object of the Invention] The present invention has been made in view of the above problems, and its purpose is to provide air circulation *ra that can block sound waves without impeding air circulation as much as possible. There is something to do.

[Disclosure of the Invention] According to the air circulation device according to the present invention, a ventilation hole is provided at one of the upper and lower ends of a partition wall that partitions two rooms, and a ventilation hole is provided in the ventilation hole along the thickness direction of the partition wall. It is constructed by installing a large number of shielding plates parallel to the wall surface, and forming ventilation slits in each shielding plate. Most of the energy of the sound waves is absorbed by the gaps between the shielding plates, and the flow rate is low. The natural circulation air flow is characterized in that the flow velocity is only slightly increased when passing through the slits of each shielding plate, and the flow is hardly hindered.

FIG. 1 shows an embodiment of the apparatus of the present invention. In the same figure, B is the room on the south side, C is the room on the north side,
Ventilation holes H are provided at the upper and lower ends of the partition wall G that partitions both chambers B and C, and a large number of flat bamboo shielding plates J are installed in the ventilation holes H along the thickness direction of the partition wall G. In addition to providing
Each shielding plate J is provided with a ventilation slit (K).

The number of pickpockets 7) K may be one for each shielding plate J, or may be plural as shown in the embodiment of FIG.
By forming K at different levels on the edge of the embodiment shown in the figure, the light-shielding property can be improved.

In either case, the air flow rate hardly decreases compared to the case where the shielding plate J is not provided.

Graphs (a) and (b) in the fpJ4 diagram are obtained by measuring the amount of attenuation of sound waves using the device shown in (c). For example, according to the configuration shown in (a), the amount of attenuation of sound waves is about 18 dB. It can be seen that a sound wave blocking effect can be obtained. The frequency of sound waves that can easily pass through varies depending on the width and spacing of the slits, so by combining shielding plates with different values,
The sound insulation effect can be further enhanced.

[Effect 1 of the Invention As described above, in the present invention, a large number of shielding plates parallel to the wall surface are provided along the thickness direction of the partition wall in the lower end of the partition wall or in the vent provided at the lower end, and each Since ventilation slits are formed in the plate, most of the sound waves are diffracted by the slits and attenuated by the gap between the shielding plates, and the shielding plates provide almost no resistance to the slowly moving airflow. This has the advantage that the flow rate does not decrease, and the sound insulation of an air circulation device that effectively utilizes solar heat can be significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is a sectional view showing another embodiment, Fig. 3 is a sectional view of essential parts showing still another embodiment, and Fig. 4(a). (b) is a graph showing the characteristics of the above, (c) is a schematic perspective view of the device used for the measurement of the above,
FIGS. 5(a) and 5(b) are schematic sectional views of a conventional example. B is the room on the south side, C is the room on the north side, G is the partition wall, H is the vent, J is the shielding plate, and K is the slit. Agent Patent attorney Mr. Ishi 1) Figure 7, Figure 1, Figure 5 (G) (b) Procedural amendment (voluntary) 1.1! Display of 1985 Patent H No. 154747 2, Name of the invention Sound insulation type air circulation device 3, Relationship with the case of the person making the amendment Patent applicant address Address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (58
3) Matsushita Electric Works Co., Ltd. Representative Meo Fujii 4 Agent postal code 530 Address 1-12-17-5 Umeda, Kita-ku, Osaka City Date of amendment order 6 Number of inventions increased by amendment None 1 ) Specification No. 1
In line 17 of the page, "Figure 5" is corrected to "Figure 4." 2) ``Absorption'' in the third line of page 3 above is corrected to ``reflection''. 3) In lines 15 to 17 of the same page as above, delete ``I can do it again in Figure 3''. 4) On the same page, line 20, "Figure 4" is corrected to "Figure 3." 5) Delete "Diffraction with a slit" in page 4, line 13 of the same page. 4) Correct "attenuation" in the 14th line of the same upward VX to "reflection". 5) Same page 5 lol! Delete lines 11-2, ``Furthermore...Figure 4''. 6) On the same page, line 4, ``Figure 5'' is corrected to ``FM4 Figure''. 7) In the drawings, tjS3 and Figure 4 are corrected, and Figure 5 is deleted. Agent Patent Attorney Ishi 1) Chief 7th 4th IXJ (G) (b)

Claims (1)

[Claims] (1) A ventilation hole is provided in at least one of the upper end and the lower end of the partition wall that separates the two rooms, and a large number of shielding plates are provided in the ventilation hole parallel to the wall surface along the thickness direction of the partition wall,
A sound-insulating air circulation device consisting of ventilation slits formed in each shielding plate.