JPH0236249B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lees retention type juicer having a cooling fan configuration with low noise.

A conventional example will be explained based on FIG.
Reference numeral 1 denotes a motor, which is elastically supported by a main body 2 via a vibration-proof rubber 3. The driving force of the motor 1 is decelerated and transmitted to the driven side connector 6 via the speed reduction mechanism 4 and the driving side connector 5, and the centrifugal separation cage 7 with the driven side connector 6 fixed to the bottom is rotated by the motor 1. Drive at approximately 1/4 of the number. Inside the centrifugal separation cage 7, a cylindrical comb-shaped filter 8 and a cutter 9 are installed. A cooling fan 10 is fixed to the non-drive side of the motor 1. Reference numeral 11 denotes a use receptor, on which a lid 13 is placed. A charging hole 14 is installed in the lid 13. 15 is a material pushing rod, and 16 is a receptacle tip.

Next, we will discuss the effect of extracting juices. The motor 1 is driven to rotate the centrifuge cage 7. Input materials such as fruits through the input hole 14, and press the push rod 1.
5 leads to cutter 9. Here the material is cutter 9
is crushed and separated into lees and juice by a cylindrical comb-shaped filter 8. The dregs are accumulated inside the cylindrical comb-shaped filter 8, and only the waste is blown to the outside of the centrifugal basket 7 and guided to the waste receiver 11 through the waste receiver 16.

During juice extraction, cooling air is flowed from the intake hole 18 to the exhaust hole 19 by the cooling fan 10 as shown by an arrow 17 in order to cool the motor 1 .

One of the drawbacks of this type of pump is that the cooling fan 10 makes a lot of noise. That is, when the cooling fan 10 directly connected to the motor 1 rotates at a high speed (approximately 15,000 rpm), turbulence is generated and noise having a wide range of frequency components is generated. This noise propagates to the outside through the intake hole 18 and the exhaust hole 19, causing discomfort to the user. As a result of various studies regarding the noise of the cooling fan 10,
The following can be said to be the cause of large noise.

1 The rotation speed of the cooling fan 10 is too high.

2 Due to its configuration, it uses an axial flow fan which is very noisy.

3. The exhaust hole 19 is located near the cooling fan 10 which is the source of the sound.

4. The distance between the exhaust hole 19 and the floor surface 20 is small.

The present invention eliminates the above-mentioned drawbacks and realizes a pumper with low cooling fan noise.

Hereinafter, one embodiment will be described in detail based on FIGS. 2 and 3. The main configuration and use extraction function are the same as those of the conventional example, so a description thereof will be omitted. To explain only the characteristic points, a plurality of convex portions 21 are provided radially on the outer periphery of the lower part of the centrifugal separation cage 7 to constitute a centrifugal fan. There is no cooling fan conventionally attached to the non-drive side of the motor 1, and there is no intake hole on the side of the main body. Next, the flow of cooling air will be explained. When the motor 1 is driven and the centrifugal separation cage 7 rotates, the protrusion 21 acts as a centrifugal fan and pushes air in the centrifugal direction. Therefore, the pressure near the bottom surface 22 of the centrifugal cage 7 becomes low, and the air inside the main body is sucked up. That is, an air flow as shown by the dotted line 23 flows from the intake hole 24 to the exhaust hole 25 which also serves as a fuel outlet hole, thereby cooling the motor 1.

Cooling air noise is greatly improved compared to conventional products for the following reasons.

1 The rotational speed of the centrifugal cage 7 is approximately 1/4 of the rotational speed of the motor 1, and even though the outer diameter of the centrifugal separation cage 7 is approximately twice that of a conventional fan, the fan air velocity is approximately 1/2 that of a conventional fan. To be /2.

2 Centrifugal fans generally have lower noise than axial fans.

3. The intake and exhaust vents are far away from the fan, which is the source of the sound.

4. There is no exhaust hole near the floor surface 20.

FIG. 4 shows another embodiment of the present invention, in which a plurality of convex portions 26 are provided on the outer bottom of the centrifugal separation cage 7 to constitute a centrifugal fan. In this embodiment as well, the same effects as in the previous example can be expected.

As is clear from the description of the above embodiments, the juicer of the present invention has a plurality of convex portions installed radially on the outer bottom or outer periphery of the centrifugal cage, and the action of the centrifugal fan on the convex portions allows the motor to be cooled by air. is drawn in through an intake hole provided at the bottom of the main body, and is exhausted through an exhaust hole that also serves as a youth extraction hole after passing around the motor. As a result, the centrifugal cage with this driven connector attached to the bottom is decelerated and rotates a centrifugal fan consisting of a large diameter convex portion at a relatively low speed. Since a large amount of cooling air can be secured, the noise of the cooling air can be reduced, and the motor can also be effectively cooled.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing a conventional jusa, Fig. 2 is a vertical cross-sectional view showing a conventional
3 is a perspective view of a centrifugal separation cage, and FIG. 4 is a perspective view of a centrifugal separation cage showing another embodiment of the invention. 1...Motor, 2...Main body, 7...Centrifuge cage, 8...Filter, 9...Cutter, 21,
26...Protrusion.

Claims (1)

[Claims] 1. A main body with a built-in motor, a youth receiver placed on the main body, a lid removably attached to the youth receiver, and a battery enclosed between the youth receiver and the lid, and a driven-side connector that receives the driving force of the motor via a reducer and a drive-side connector is fixed to the bottom, and a centrifugal separation cage having a cylindrical comb-shaped filter and a cutter therein is attached to the bottom of the main body. A plurality of convex portions are installed radially on the outer bottom or outer periphery of the centrifugal separation cage, and the centrifugal separation cage has an air intake hole provided therein, and an exhaust hole provided at the bottom of the waste receptacle and also serves as a youth extraction hole. A pumper configured to suck motor cooling air through the intake hole, pass around the motor, and exhaust it through an exhaust hole that also serves as a juice takeout hole by the action of a centrifugal fan on the convex portion.