JPS6077059A - Air supply device - Google Patents

Abstract

PURPOSE:To aim at miniaturizing an air supply device to enhance the silencing effect of a muffler for silencing the sound of discharge air from a blower, by integrally incorporating the muffler with a pulley cover therewithin which covers the pulley section of a drive system. CONSTITUTION:By utilizing a space in a pulley cover 18 covering pulleys coupled to a pump, a blower and a motor which are mounted on the base 9 of an air supply device, on the side that is not shown, a muffler 21 for silencing the sound of discharge air from a blower 7 is integrally formed with the pulley cover therewithin, and further, the discharge port 22 of the blower is connected with the muffler 21 by means of a connecting elbow so that the air is discharged directly from the blower into the muffler 21. With this arrangement, it is possible to save the attaching space of the muffler, and therefore, it is possible to aim at miniaturizing the air supply device, thereby the leakage of discharge air sound from the blower and pressure loss may be eliminated to enhance the silencing effect.

Description

Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to a muffler for muffling the exhaust air of a blower of an air supply device having both mechanisms of a pump for supplying air and a blower for discharging air. Drive (b) Prior Art and Problems A magnetic tape device has a file reel (hereinafter referred to as reel) 1 and a machine reel (hereinafter referred to as take-up reel) 2, as shown in FIG. 1, for example. In order to read and write on the tape 3 with the magnetic disk 4, the tape 3 is run in the forward direction (arrow) and rewound onto the reel 1 while running in the opposite direction.

The above-mentioned tape running starts with a fast start-up rotation of the capstan motor 5 according to a command for forward or reverse running, but since the reel 1 and the take-up reel 2 have large inertia, the tape running starts as quickly as the capstan motor 5. 0 Therefore, in order to give a constant tension to the tape 3 in the column 6, the air in the column 6 is exhausted from the X mark part with a blower (not shown) and the tape 3 is sucked in. Also, a pump ( (1 not shown) supplies air, and the tape 3 is floated above the surface of the guide 7 by the air.

The air supply device (hereinafter referred to as the air supply device) consisting of the pump and blower is located at the rear A of the magnetic tape unit 8 as shown in Figure 2. In the internal view, the air supply device includes a pump 10° blower 111 motor'712 mounted on the base 9, and boozes 113, 14, and 15 for driving them mounted on the outside (bottom in the figure) of the base 9, respectively. , belt L
6. Connected by 17 (constitutes a 7 drive system and covered with a pulley cover 180) Conventionally, a muffler (hereinafter referred to as muffler) 19 for muffling the exhaust of the blower 11 of an air supply device is an air sub-light device. Because they were separate.

The magnetic tape device 8 has an air sub 2 device and a muffler 19.
was taking up a lot of space. Therefore.

In small devices, the muffler 19 is installed externally, but only small ones can be installed.
Since the port 20 is connected at 0, there are problems such as sound leakage and pressure loss due to the port 20, and small mufflers have problems such as low muffling, so the muffler's muffler's muffling effect is small.

(c) Purpose of the Invention An object of the present invention is to reduce the space occupied by the air supply device and the muffler by utilizing the space between the pulley and the cover of the air supply device, by incorporating the muffler inside the pulley cover, and by silencing the air. 〇(d) Structure of the Invention The object of the present invention is to provide an air supply device with improved effectiveness.According to the present invention, a pump for supplying air, a blower for exhausting air, and a pump for driving the pump and blower are provided. In the air supply device, the air supply device is composed of a drive system that operates and a pulley cover that covers the pulley portion of the drive system, and a silencer that silences the exhaust gas of the blower is installed inside the pulley cover.
This is achieved by providing an air supply device that is characterized in that it is integrated into a body.

(e) Embodiments of the Invention Below, embodiments of the present invention will be described in detail with reference to the drawings. ) is an internal view of the pulley part seen from the top with the pulley cover closed in Figure 4, and Figure 5 @) is an internal view of the pulley part seen from the side with the pulley cover closed in Figure 4. In the figure shown, the air sub-2 device of the present invention is arranged at the rear A of the 6J1 air tape device 8 in the same way as the conventional air supply device shown in FIG. 3 (see FIG. 2). Pump 10 mounted on the base 9 of the Air the Bly equipment bay
．． Blower 11. Pulley 1 connected to each shaft of motor 12
3, 14, 15 and the pulley cover 18 (upper right corner of the figure), a muffler 21 for muffling the exhaust air of the blower 11 is integrated inside the pulley cover 18, and furthermore, a muffler 21 for muffling the exhaust air of the blower 11 is integrated. Elbow 2 connecting the outlet 22 and the muffler 21
3 to directly exhaust air from the blower 11 into the striped straw 21. Furthermore, the boo 1j13 connected to the pump [50] and the boo 1114 connected to the blower 11
A belt 16 is connected to a pulley 15 connected to a motor 12, respectively.
．． 17, and each is driven by a motor 12.

As mentioned above, by making the muffler 21 L-shaped and incorporating it into the space at the upper right corner of the pulley cover 18, the muffler 21 is integrated with the pulley cover 18, and the installation location of the muffler 19, which is installed externally, is reduced. Since the muffler 21 is built into the zero or pulley cover 18 which is economical and compact, it can be directly connected to the discharge port 22 of the blower 11 through the connecting elbow 23, so there is no need to use the hose 20 as in the conventional case.

Sound leakage and pressure loss due to the hose 20 are eliminated, and the cooking sound effect is improved. .

By incorporating the muffler into the pulley cover, the muffler is not installed outside the equipment as in the past, making it more compact.Furthermore, by connecting the muffler and blower with a gauze elbow, the muffler and blower can be connected with a long hose as in the past. This has the effect of preventing sound leakage and pressure loss due to the hose, and improving the muffler's muffling effect.

[Brief explanation of the drawing]

Fig. 1 is a diagram for explaining the outline of a magnetic tape device, Fig. 2 is a perspective view showing the installation position of an air supply device, and Fig. 3 is a final diagram for explaining a conventional air supply device.
1. FIG. 1 is a side view showing an open state of the pulley cover of one embodiment of the air supply device of the present invention, and FIG. 5 (a) is a side view of the pulley cover of FIG. Fig. 5(o) shows an internal view of the pulley part as seen from the side with the pulley cover in Fig. 4 closed. 17 is a belt, tsVi pulley cover, 21 is a muffler, 22 is a discharge port, and 23 is a connecting elbow. Fig. 1 #2 Fig. 3

Claims (1)

[Claims] An air supply device comprising a pump that supplies air, a blower that exhausts air, a drive system that drives the pump and the blower, and a pulley cover that covers a pulley part of the drive system, wherein the An air supply device 0 characterized in that a muffler for muffling the exhaust air of a blower is integrated and provided.