JPH04190861A - Electric precipitator - Google Patents

Abstract

PURPOSE:To reduce the number of parts and to enhance assembling workability by directly supporting the end part of a discharge electrode by a support member having elasticity. CONSTITUTION:An electrode terminal 11 itself is equipped with a spring function part 11a and one end of a discharge electrode 2 composed of a fine metal wire is directly connected to the spring function part 11a of the electrode terminal 1. The discharge electrode 2 composed of the fine metal wire is pulled so as to become parallel to an opposed electrode without requiring a coil spring. Therefore, the number of the parts of a charging part is reduced and assembling workability is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an electrostatic precipitator, and more particularly to an improvement in the supporting part of the discharge electrode of the charging part.

(Prior Art) The main function of an electrostatic precipitator is to generate corona discharge between a discharge electrode and a counter electrode.
It has two functions: a charging function that charges dust in the air, and a dust collection function that collects the charged dust. The dust collection characteristics of such an electrostatic precipitator are approximately proportional to the discharge current characteristics of the charging section (ionizer). In the charging section, it is important from a design standpoint, such as safety, to flow as much discharge current as possible at the lowest possible voltage. Therefore, the discharge electrode of the charging section needs to have a sufficiently smaller surface area and volume than the counter electrode, be held parallel to the counter electrode surface, and minimize the contact area with the support member. For this purpose, a thin metal wire or the like stretched by a spring body or the like is used as the discharge electrode.

FIGS. 4 and 5 show a charging section in such a conventional electrostatic precipitator. An electrostatic precipitator is provided with a charging section on the upstream side of the flow of air to be purified, and a dust collecting section (not shown) on the downstream side. In Figure 4,
Reference numeral 1 denotes an ionizer frame, and in the ionizer frame 1, discharge electrodes 2 and counter electrodes 3 made of thin metal wires having a diameter of about 100 μm are alternately arranged at appropriate intervals. 4 is a power lead wire, 5 is a lead wire faston terminal, 6 is an electrode terminal, 7 is a terminal fixing member for fixing the electrode terminal 6 to the frame 1, 8 is a latch terminal, and the discharge electrode 2 is made of a thin metal wire. One end is connected to the electrode terminal 6 via the coil spring 9, and the other end is latched to the latch terminal 8 and pulled so as to be parallel to the surface of the opposing electrode 3. In this example, a (+) high voltage is applied to the discharge electrode 2 to generate corona discharge, and the dust 10 in the air is charged. On the other hand, the dust collecting section (not shown) is composed of a dust collecting electrode and a counter electrode that are arranged opposite to each other with an appropriate interval. A voltage is applied between these two electrodes, and the dust 10 charged in the charging section is collected.

(Problems to be Solved by the Invention) In a conventional electrostatic precipitator, one end of a discharge electrode 2 made of a thin metal wire is connected to an electrode terminal 6 via a coil spring 9. However, by using the coil spring 9,
There were the following problems.

■To connect one end of the discharge electrode to the power source, there were two parts, an electrode terminal and a coil spring. ■When assembling the charging section, two delicate tasks were required: hooking the discharge electrode made of thin metal wire onto the coil spring, and then hooking the other end of the coil spring onto the electrode terminal, resulting in poor assembly workability.

■As shown in Figure 6, when an electrostatic precipitator is used as a built-in type in the wall-mounted air conditioner body 14, etc., if the discharge electrode made of thin metal wire breaks, for example at the part marked with an x in the figure. There was a risk that the coil spring 9 would come off the electrode terminal and come into contact with a live electrical part 15 of an air conditioner controller or the like, or be caught in a functional operating part, thereby damaging the performance of the air conditioner. ■When the discharge electrode was disconnected, there was a risk that it would come off from the coil spring or electrode terminal and be lost.

Therefore, the present invention provides an electrostatic precipitator that can reduce the number of parts and improve assembly workability, and that does not affect the performance of other live parts even if a disconnection occurs in the discharge electrode. The purpose is to provide.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention generates corona discharge between a linear discharge electrode and a counter electrode arranged oppositely,
The present invention is an electrostatic precipitator that charges and collects dust in the air using this corona discharge, and the gist is that the end of the discharge electrode is directly supported by an elastic support member.

(Function) By directly supporting the end of the linear discharge electrode with an elastic support member, the discharge electrode can be pulled parallel to the counter electrode without requiring a coil spring. Therefore, the number of parts of the charging section is reduced and the assembly work efficiency is improved.

Furthermore, even if a disconnection occurs in the discharge electrode, the detached coil spring will not affect the performance of other live parts.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 and FIG. 2 are diagrams showing one embodiment of the present invention.

In addition, in FIG. 1 and FIG. 3 showing other embodiments described later, the same or equivalent parts as those in FIG. .

In this embodiment, the spring function part 11a is attached to the electrode terminal 11 itself.
is provided, and one end of a discharge electrode 2 made of a thin metal wire is directly connected to a spring function part 11H in the electrode terminal 1]. That is, the electrode terminal 1 having the spring function part 11a
1 directly supports the end of the discharge electrode 2 and supports the discharge electrode 2.
It functions as a support member with elasticity to set it in a tensile state.

In the electrostatic precipitator of the second embodiment, since the charging part is configured as described above, the discharge electrode 2 made of a thin metal wire can be pulled parallel to the counter electrode without the need for a coil spring. . Therefore, the number of parts of the charging section is reduced and assembly work efficiency is improved. In addition, the discharge electrode 2
Even if a disconnection occurs in the coil spring, the detached coil spring will not affect the performance of other live parts.

Next, FIG. 3 shows another embodiment of the present invention. In this embodiment, one end of the discharge electrode 2 made of a thin metal wire is latched to the terminal fixing member 7, and the spring function part 12a of the electrode terminal 12 is elastically in contact with the discharge electrode 2, so that the discharge electrode 2 is facing It is pulled parallel to the electrode.

The operation and effect are almost the same as those of the above embodiment.

[Effects of the Invention] As explained above, according to the present invention, the ends of the linear discharge electrodes are directly supported by the elastic support members, so the discharge electrodes can be moved without the need for coil springs. Since it can be pulled parallel to the counter electrode, the number of parts can be reduced and assembly work efficiency can be improved. Furthermore, even if a disconnection occurs in the discharge electrode, the detached coil spring will not affect the performance of other live parts.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of an electrostatic precipitator according to the present invention, in which Figure 1 is a configuration diagram of main parts, Figure 2 is a diagram showing electrode terminals, and Figure 3 is a diagram showing an embodiment of an electrostatic precipitator according to the present invention. Fig. 4 is a block diagram of the charging section in a conventional electrostatic precipitator, Fig. 5 is a cross-sectional view of the discharge electrode and counter electrode portion in Fig. The figure shows the main body of a wall-mounted air conditioner with a built-in dust collector. 2: Discharge electrode, 3: Counter electrode, 11.120 Electrode terminal functioning as a support member having elasticity, 11a, 1.2a・Spring function part.

Claims (1)

[Scope of Claims] An electrostatic precipitator that generates a corona discharge between a linear discharge electrode and a counter electrode arranged opposite each other, and charges and collects dust in the air by the corona discharge, the electric precipitator comprising: An electrostatic precipitator characterized in that an end of an electrode is directly supported by an elastic support member.