Gas separation: apparatus – Electric field separation apparatus – Electrode cleaner – apparatus part flusher – discharger – or...
Reexamination Certificate
1998-12-22
2001-06-26
Chiesa, Richard L. (Department: 1724)
Gas separation: apparatus
Electric field separation apparatus
Electrode cleaner, apparatus part flusher, discharger, or...
C055S282300, C055SDIG001, C095S073000, C095S074000, C096S090000, C096S096000
Reexamination Certificate
active
06251170
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electronic dust collector and an air conditioner equipped with electronic dust collector, and more particularly, to a technique for preventing abnormal discharge between the electrodes of an electronic dust collector.
2. Description of the Prior Art
Hitherto, as a device for cleaning air by collecting dust, fine particles, etc. contained in air using a discharge effect, there has been known an electronic dust collector, sometimes known as a precipitation air cleaner.
Referring to
FIG. 11
, an essential part of conventional electronic dust collector
101
includes a discharge electrode
10
and a dust collection electrode
120
. A high voltage applied between electrodes
110
and
120
ionizes the dust and fine particles in the surrounding air as it passes the discharge electrode
110
. Electrode
110
is positive with respect to electrode
120
. Thus, the dust and fine particles are given a positive charge which attracts them to the negatively charged dust collection electrode
120
. The dust and other particles are adsorbed on the dust collection electrode
120
, whereby air is purified. A discharge line
111
of the discharge electrode
110
has connected at each of its ends
111
a
an extension spring
112
. Tension of the extension springs
111
a
hold the discharge line in its set position by the tension of the extension spring
112
. The dust collection electrode
120
has a linear shape. The dust collection electrode
120
is positioned a predetermined distance from, and parallel to, the discharge electrode
110
.
However, in the electronic dust collector
101
described above, the distance d′ between the extension spring
112
and the dust collection electrode
120
is smaller than the distance d between the discharge line
111
and the dust collection electrode
120
. As a result of this smaller distance, there is a high probability that an abnormal discharge will occur between the extension spring
112
and the dust collection electrode
120
. The abnormal discharge lowers the dust collection rate and generates unpleasant snapping noises.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of the invention to provide an electronic dust collector which overcomes the drawbacks of the prior art.
It is a further object of the present invention to provide an electronic dust collector and an air conditioner equipped with the electronic dust collector in which abnormal discharge and reduced dust collection efficience is prevented. These objects are secured by providing a maintaining predetermined distance between the discharge line fixing part and the dust collection electrode.
In order to attain the above object, the present invention provides an electronic dust collector comprising a discharge electrode and a dust collection electrode in parallel at a predetermined distance from each other with a high voltage applicable between them. The dust collector collects dust contained in air onto the dust collection electrode by way of the discharge effect. A discharge line, which constitutes the discharge electrode, is fixed to a power supply part through the discharge line fixing part. A position of the dust collection electrode opposed to the discharge line fixing part is bent in the direction away from the discharge line fixing part.
In this constitution, during the dust collection operation of the electronic dust collector, a high voltage is applied between the discharge electrode and the dust collection electrode. The dust contained in the air introduced in the dust collector is ionized by the discharge electrode and adsorbed to the dust collection electrode, by which the introduced air is cleaned. Here, the position opposed to the discharge line fixing part of the dust collection electrode is bent in the direction away from the discharge electrode, so that the distance between the discharge line fixing part and the dust collection electrode is not shorter than that from other discharge parts.
Accordingly, the generation of abnormal discharge from the discharge line fixing part, and the lowering of production efficiency and generation of unpleasant abnormal sounds are all avoided.
The present invention provides an electronic dust collector comprising a discharge electrode and a dust collection electrode in parallel at a predetermined distance with a high voltage applicable between them. The dust collector collects dust contained in air onto the dust collection electrode by way of the discharge effect. A discharge line, which constitutes the discharge electrode, is fixed to a power supply part through the discharge line fixing part. Both ends of the discharge line are bent so that the discharge line fixing part of the discharge electrode is held away from the dust collection electrode.
The distance between the discharge line fixing part and the dust collection electrode does not become nearer than that of other discharge part, and the same action as that described above is obtained.
Also, it is desirable for the above dust collection electrode to contain a heater for self-cleaning the dust collection electrode. In this constitution, by controlling the application of electricity to the heater, the dust collection electrode is subjected to temperature elevation to remove dust and fine particles deposited on the electrode.
The present invention also provides an air conditioner with electronic dust collector for conditioning the interior air and purifying air by collecting dust in air by using an electric discharge effect, comprising: a casing having an air suction port and an air outlet port, a heat exchanger in the casing facing to the suction port, a fan for circulating air into the suction port through air passages in the heat exchanger and the casing and out through the air outlet port; and an electronic dust collector arrayed in the air passages for collecting dust in air which passes through the air passages by using the discharge effect. The dust collector comprising a discharge electrode and a dust collection electrode arrayed in parallel at a predetermined distance and between which a high voltage is to be applied; a discharge line constituting the discharge electrode being fixed at both ends thereof to the power supply part through the discharge line fixing part; and the position opposed to the discharge line fixing part of the dust collection electrode being bent in the direction of alienation from the discharge line fixing part.
In this constitution, during the air conditioning operation the heat exchanger and the fan are driven to introduce air through the suction port of the casing, and the thus introduced air is cooled or heated by the heat exchanger, after which it is circulated in the air passage. At this time, because a high voltage is applied between the discharge electrode of the electronic dust collector and the dust collection electrode provided on the air passage, the dust contained in air which flows through the air passage is ionized by the discharge electrode and deposited on the dust collection electrode. By this step, the air is cleaned and blown from the air outlet port. Further, since the distance between the discharge line fixing part and the dust collection electrode is closer than to other discharge parts, the same action as that described above is obtainable.
Also, the present invention provides an air conditioner with electronic dust collector for conditioning the interior air and purifying air by collecting dust in air by using an electric discharge effect, comprising: a casing having an air suction port and an air outlet port; a heat exchanger in the casing facing the suction port; a fan for circulating air into the suction port through the heat exchanger and air passages in the casing and out the air outlet port; and an electronic dust collector arrayed in the air passages for collecting dust in air which passes through the air passages by using the discharge effect; the dust collector comprising a discharge electrode and a dust collection elec
Hironaka Yasumasa
Tanaka Hisanobu
Yoshida Shinji
Chiesa Richard L.
Funai Electric Co. Ltd.
Morrison Law Firm
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