JPH0111318Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an atomizer spray disc.

(Prior Art and Purpose and Structure of the Present Invention) As shown in FIG. 1, the spray plate 1 of a conventional atomizer has a lower plate 6 and an upper plate 7 having the same diameter. However, inside the drying chamber 3, the hot air sent from the hot air supply pipe 4 is blown through the opening 4a and descends in a spiral toward the periphery of the drying chamber 3. At this time, the periphery of the atomizer casing 2 becomes an air pocket for this spiral hot air, and the cold air supply pipe 11 flows from the periphery of the atomizer casing 2.
When cold air is introduced through the pipe, a cold air low speed zone C is also generated.

On the other hand, a hot air high speed zone H is naturally formed around the cold air low speed zone C. Generally hot air high speed zone H
The wind speed is 5 to 30 m/s, whereas in the cold wind low speed zone C, the wind speed is as low as 0 to 1.5 m/s. As a result, the cold air low speed zone C relatively forms a negative pressure zone within the drying chamber 3.

Therefore, the spray plate 1 rotates on the rotating shaft 5, and the liquid l
is radiated around it, this radiated liquid l
A part of the air is sucked into the cold air low speed zone C, which is a negative pressure zone. In this way, the liquid supply casing 2
Particles s of liquid 1 will adhere to the outer peripheral surface of . When the attached particles s dry, they fall as impurities and are mixed into the product, degrading the quality of the product.

The present invention aims to solve the problems of the conventional atomizer spray plate 2. That is, as described below, in the present invention, the diameters of the upper plates 7a, 7b, 7c of the atomizer casing 1 are made larger than the diameter of the lower plate 6a of the atomizer casing 2, and the upper plate 7
The outer peripheral edges of a, 7b, and 7c extend beyond the low-speed cold air zone C and reach the high-speed hot air zone H. The present invention attempts to prevent the particles s of the liquid l from adhering to the outer peripheral surface of the atomizer casing 2 by adopting such a configuration.

(Description of Embodiments) Embodiments of the present invention shown in the drawings will be described below.

FIG. 2 shows a case where the present invention is applied to a vane type spray plate 2a.

In FIG. 2, 2a is a vane type sprayer, 6
a is a lower plate, 7a is an upper plate, 8 is a locking nut for the rotating shaft 5, 9a is a spray port drilled in the upper part of the lower plate 6a, 10 is a liquid supply pipe, and 11 is a cold air supply pipe.

In FIG. 2, the upper plate 7a is larger in diameter than the lower plate 6a of the vane type spray plate 2a, and extends beyond the cold air low speed zone C until it reaches the hot air high speed zone H. In reality, the diameter of the lower plate 6a is 60 to 440 m/m.
Then, the diameter of the upper plate 7a is +20~100m/m
It is.

FIG. 3 shows the case where the present invention is applied to a pin type spray disc 2b.

In Fig. 3, 6b is the lower plate, 7b is the upper plate,
9b is a pin installed between the lower plate 6b and the upper plate 7b. Its working structure is the same as that shown in FIG.

FIG. 4 shows the case where the present invention is applied to a nozzle type spray plate 2c.

In Fig. 4, 6c is the lower plate, 7c is the upper plate,
9c is a nozzle bored in the upper part of the lower plate 6c.
Its operational structure is the same as that in FIGS. 2 and 3.

(Effects of the present invention) Since the particles s of the liquid 1 do not adhere to the outer peripheral surface of the atomizer casing 2, the quality of the product does not deteriorate.

[Brief explanation of the drawing]

Fig. 1... A cross-sectional view of a drying chamber using a conventional spray disc, Fig. 2... A partially missing sectional view of the first embodiment of the present invention, Fig. 3... A partially missing sectional view of the second embodiment of the present invention. Cross-sectional view, FIG. 4: A partially cut-out cross-sectional view of the third embodiment of the present invention. Fig. 1, 1... spray plate, 2... atomizer casing, 2a... bottom, 3... drying chamber, 4...
Hot air supply pipe, 5...rotating shaft, 6...lower plate, 7...
Upper plate, 8... Fixing nut, 9... (missing number), 10
...Liquid supply pipe, 11...Cold air supply pipe, l...Liquid, s
...Particles (deposits). Fig. 2, 2a... spray plate, 6a... lower plate, 7a
...Top plate, 9a...Spray hole. Figure 3, 2b...spray plate, 6b...lower plate, 7b
...Top plate, 9b...pin. Fig. 4, 2c...spray plate, 6c...lower plate, 7c
...Top plate, 9c...Nozzle.

Claims (1)

[Claims for Utility Model Registration] A spray plate is provided on the lower surface of the atomizer casing 2 in the drying chamber 3 and rotates around a rotating shaft 5 and has a spray port formed between an upper plate and a lower plate; Hot air is blown from the high hot air supply pipe 4 on the outside of the atomizer casing 2 to form a hot air high speed zone H around the atomizer casing 2, and inside this hot air high speed zone H there is an air pocket or a cold air supply tube centered around the atomizer casing 2. In an atomizer in which a cold air low speed zone C is formed by the cold air supplied from the pipe 11, the outer circumferential edge of the upper plate exceeds the outer circumferential edge of the lower plate, and also crosses the air pocket or cold air low speed zone C to reach the hot air high speed zone H. A spray disc characterized by extending.