JPS61280335A - Supersonic humidifying unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used in an ultrasonic humidifier, and relates to an ultrasonic humidifying unit using a piezoelectric ceramic vibrator.

Conventional technology Conventionally, this type of ultrasonic humidification unit
466, and the water cooling method as a heat dissipation means for power transistors was disclosed in Japanese Patent Publication No. 35-5927.
There is something indicated in the number.

A conventional embodiment will be explained with reference to FIG.

In FIG. 2, 1 is a piezoelectric ceramic vibrator, and a horn part 2a
The piezoelectric ceramic vibrator 1 is attached to the horn portion 2a of the chamber base 2 which has a protruding portion 2b for fixing the power transistor 6 via the rubber seal 3, and the pressure bonding plate 4 is aligned with the horn opening. Fix the screw to the The piezoelectric ceramic vibrator 1 is crimped and fixed by a crimping plate 4.

A power transistor 6 is fixed to a protrusion 2b of the chamber base 2 which has a heat dissipation function, and the circuit section 6 is connected to a printed circuit board 7 by fixing it to the chamber base 2 with screws. 8 is a QIJ ring, and the bottom opening 98 of the storage tank 9
This is to bring the chamber base 2 installed in L into close contact with the opening 9a. 1o is a liquid, and 11 is a mist generated by the action of ultrasonic waves.

Problems to be Solved by the Invention In such a conventional configuration, when the piezoelectric ceramic vibrator is caused to oscillate by the drive circuit, the power transistor of the drive circuit generates heat, the temperature of the chamber base rises, and the piezoelectric ceramic vibrator oscillates. There was a problem that the ultrasonic conversion efficiency decreased and at the same time, the resin fixing part of the humidifier body was dissolved. The present invention solves these problems by suppressing the heat generation of the power transistor, preventing damage to the power transistor due to self-heating, lowering the temperature of the chamber base, and preventing the resin of the humidifier body from being damaged by the heat of the fixed substrate. The purpose is to prevent destruction.

Means for Solving the Problem In order to solve this problem, the present invention is attached to the bottom opening of the storage tank, has a radiation part and a mounting part inside the cylindrical member, and has a radiating part and a mounting part inside the cylindrical member. an annular collar portion, a chamber base comprising a plurality of grooves extending in the height direction on the outside of the cylindrical member, and a hole portion into which the chamber base is inserted;
a fixing substrate having a space formed by the outer surface of the chamber base and a flat part for closely fixing the annular collar of the chamber base; and a piezoelectric vibrating piezoelectric ceramic for generating ultrasonic waves arranged at the attachment part of the chamber base. a vibrator holder for fixing the piezoelectric ceramic vibrator and the piezoelectric vibrator by pressure bonding, and a circuit section that fixes a power transistor for driving the piezoelectric ceramic vibrator to the fixed substrate and is connected to the fixed substrate via a printed circuit board. It is composed of

Effect: With this configuration, the liquid in the storage tank infiltrates the groove of the chamber base and the storage area formed between the fixed substrate and the chamber base, thereby reducing the heat generated by the power transistor.
This will significantly increase the heat dissipation effect.

Embodiment 6 Beno FIG. 1 is a sectional view of an ultrasonic humidifying unit according to an embodiment of the present invention. In FIG.
and a mounting portion 12b for fixing the piezoelectric ceramic vibrator 1, and a groove portion 120 for guiding the liquid 1o in the storage tank e on the outside. A fixed substrate 13 has a hole 13iL into which the chamber base 12 is inserted and fixed. Chamber base 1
The second collar portion 12d is tightly fixed to the flat portion 13b of the fixed substrate 13 via a rubber ring 14.

A storage section 15 was configured between the fixed substrate 13 and the chamber base 12. Reference numeral 16 denotes a vibrator holder having a crimp portion 161L for crimp-fixing the piezoelectric ceramic vibrator 1 and positioning it on the chamber base mounting portion 12b. The vibrator holder 16 is fixed to the chamber base 12 or the fixed substrate 13 with screws. 6 is a circuit section that drives a piezoelectric ceramic vibrator;
It is fixed to a fixed board 13 via a printed circuit board 7 with screws. Reference numeral 3 denotes a rubber gasket that elastically supports the piezoelectric ceramic vibrator 1.

6 b.

Reference numeral 8 denotes an O-ring for bringing the bottom of the storage tank 9 and the fixed substrate 13 into close contact.

Effects of the Invention As described above, according to the present invention, the liquid in the reservoir of the humidifier body is sucked into the humidifying unit and retained in the reservoir between the fixed substrate and the chamber base, thereby increasing the heat dissipation effect of the fixed substrate. effective. Compared to conventional water cooling systems, the unit is smaller, simpler in structure, and less expensive because it uses the water in the storage tank and uses the space between the fixed substrate and the chamber base. , it is possible to provide a unit with high heat dissipation effect. ! f. Since heating of the power transistor can be prevented and the temperature of the fixed substrate can be kept within a predetermined temperature, the attachment part of the humidifier main body can be prevented from being destroyed. When the liquid in the storage tank runs out, the piezoelectric ceramic vibrator generates heat and self-destructs due to the dry heating phenomenon, but according to the present invention, the self-destruction durability is significantly improved by the liquid in the storage area around the chamber base. It has the effect of

7 heh 7

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an ultrasonic humidifying unit according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional ultrasonic humidifying unit.

Claims (1)

[Claims] It is attached to the bottom opening of the storage tank, has a radiating part and a mounting part on the inside of a cylindrical member, an annular collar part is provided around the opening end of the cylindrical member, and a plurality of parts in the height direction are provided on the outside of the cylindrical member. It has a chamber base configured as a groove of a book, a hole into which the chamber base is inserted, and a reservoir formed by an outer surface of the chamber base, and the annular collar of the chamber base is tightly fixed. a fixed substrate having a flat surface, a piezoelectric ceramic vibrator for generating ultrasonic waves disposed on a mounting portion of the chamber base, a vibrator holder for crimping and fixing the piezoelectric ceramic vibrator; An ultrasonic humidification unit comprising a power transistor to be driven fixed to the fixed substrate, and a circuit section connected to the fixed substrate via a printed circuit board.