JPH02152564A - Collecting device - Google Patents

Abstract

PURPOSE:To exactly detect the timing for exchanging a filter medium for removing powder dust provided in a casing and to maintain collecting capacity by providing sensors which are respectively changed in output voltage by the concn. of powder dust particles and an alarming device for the degradation of the dust collection effect, before and behind the filter medium. CONSTITUTION:The collecting member (filter medium) 4 which is passed with powder dust fluid 10 to collect and remove the powder dust is provided in the casing 1 and the sensor 8, 9 for detecting the concn. of the powder dust which are changed in the output value according to the variation in the amt. of the powder dust in the fluid are respectively disposed on the upstream and downstream sides of the filter medium 4. The amt. of the powder dust in the fluid on the upstream of the filter medium 4 and the amt. of the powder dust in the fluid after the passage through the filter medium 4 are compared and computed at this time. Judgement is made that the function of the filter medium 4 is degraded when the difference between both attains a prescribed value. A means (alarm lamp) 11 for announcing the timing for exchanging the filter medium 4 or the like is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a collection device such as an air dust collector.

[Conventional technology]

In recent years, electrostatic precipitators have been used that charge and remove airborne substances such as dust, microorganisms, and smoke contained in indoor air to keep the indoor air clean.
It is disclosed in Japanese Patent No.-24551.

This will be explained using diagram 1g5. In the same figure, a fan (3) connected to a motor (2) is provided in the ventilation path inside the casing (1), and the rotation of this fan (3) causes contaminated air from outside to be sucked into the intake port ( 7), and this contaminated air is charged in the process of passing between the opposite pole (5) and the discharge wire (6). The charged contaminated air is further adsorbed by the r material (41) provided at the rear. At this time, the F material (41) changes color due to the contaminated air as time passes, and the r material (41) becomes discolored due to the contaminated air. The material (41) becomes saturated and its adsorption capacity decreases.

[Line order to be solved by the invention]

Since conventional collection devices such as electrostatic precipitators are configured in one or more ways, there is no way to easily know the relationship between the usage time and life of the P material itself.

Even if the capacity of the r material, that is, the collecting member, decreased, the chopsticks could continue to be used in that state.

This invention was made in order to solve the above-mentioned problems, and it is possible to easily check the lifespan of the collecting member and to check its IiR.
The purpose of the present invention is to obtain a collection device that can always make full use of its collection ability.

[Means to solve the problem]

The collection device according to the invention allows fluid to pass through.

It has a collecting member that collects objects in the fluid, and sensors that output signals according to the amount of objects in the fluid are disposed upstream and downstream of the collecting member, respectively.

The apparatus is equipped with means for executing a predetermined process based on the difference between the output values of the respective sensors.

[Effect]

The collecting device according to the present invention compares the amount of objects in the fluid upstream of the collecting member and the amount of objects in the fluid after passing through the collecting member, and when the difference falls within a predetermined range,
It is determined that the function of the collection member has deteriorated. Based on this, predetermined processing such as notifying the replacement time is executed.

〔Example〕

Hereinafter, each part of a dust collector will be explained with reference to a complete diagram VC of an embodiment of the present invention. (81, (91 is a dust concentration detection sensor that has a light transmitting part and a light receiving part, and detects the dust concentration by utilizing the change in the amount of received light when the light is blocked when dust αG passes between them. So, the sensor (8I is r
A sensor (9) is arranged upstream of the material and downstream. αD
JtIj warning light when replacing r material, UX5 is sensor f81
．． (Arithmetic processing unit 1 that compares and calculates the voltage output from 91
3, and a control section I that determines whether to output to the warning light an based on the calculation result.

FIG. 2 is a diagram showing that as the dust particle concentration increases, the output of the sensor increases.

Figure wJa is a circuit block diagram of an embodiment according to the present invention,
FIG. 4 is a flowchart showing the operation.

Next, the operation will be explained. When the fan (3) is driven by the motor (2), powder m (l [l] flows into the casing (1) through the intake port (7). Powder 11uG
is charged in the electric field generated by the counter electrode (5) and the radiation line (6), is attracted to the r material (4) which is the collection member, and is discharged as dust-removed air.

Moreover, sensors f81. arranged upstream and downstream of P material (4). (As shown in Figure 2, 91 has the characteristic that the output value changes depending on the dust particle concentration, so
If there is a dust collection effect of Δ
V) becomes O.

ΔV=V(81-V(91-Mountain) When the dust collection effect decreases, the difference in concentration between upstream and downstream becomes smaller, so ΔV approaches O, and when the dust collection effect disappears, the r material becomes dusty. is re-emitted, and Δ■ becomes 0 or negative. This operation is performed in the arithmetic processing unit a3, and ΔV
When 0 becomes negative, a signal is sent from the control unit α so that a warning light is turned on.

In addition, in the above embodiment, the warning light is turned on when ΔV becomes O or negative, but if you want to turn on the warning light when the dust collection ability deteriorates to a certain extent, ΔV≦α (α is positive). You can.

Further, in the above embodiment, the concentration is detected using an optical sensor, but the sensor is not limited to the concentration and may be used as long as it can measure the amount of an object in the fluid, and other types of sensor may also be used.

Further, in the above embodiment, an example is shown in which a warning light is turned on, but other processes such as stopping the device, generating a warning sound, and automatically replacing a collection member may be used.

Further, in the above embodiment, an example was shown in which dust in gas is collected using P material, but any fluid such as gas or liquid may be used. Further, the material does not have to be R material, and any substance in the fluid can be collected, such as wire mesh, stubs, electrodes, and amorphous stones.

In addition, in the above embodiment, an example of an electrostatic precipitator was shown, but
It is not necessarily necessary to use electricity.

Furthermore, the device is not limited to one that collects unnecessary objects such as dust, but may also be one that collects necessary objects.

〔Effect of the invention〕

As described above, according to the present invention, a collection device is configured by a collection member, sensors for measuring the amount of substances in a fluid disposed upstream and downstream of the collection member, and means for comparing signals from each sensor. With this structure, it is possible to accurately detect the time to replace the collection member and to obtain a device that can always exhibit its collection ability.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an electrostatic precipitator according to an embodiment of the present invention. FIG. 2 is a diagram showing the relationship between dust particle a degree and sensor output. FIG. 3 is a circuit block diagram of an embodiment according to the present invention. FIG. 4 is a flowchart of an embodiment according to the present invention. FIG. 5 is a sectional view showing a conventional electrostatic precipitator. In the figure, (11 is the casing, (2) is the motor,
(8) and (9) are sensors, αυ is a warning light, and +12 is a control device. Note that the same reference numerals in each figure indicate the same or corresponding parts. Figure 17-2] 7 3 Futen 4, Structural material 5 Su-1 interval'' and 6 Bunlock record 7 Item νh.

Claims (1)

[Scope of Claims] A collection device having the following elements: (a) a collection member for passing a fluid and collecting objects in the fluid; (b) a collection member provided on both sides of the collection member and responsive to the amount of objects in the fluid; (c) means for performing a predetermined process depending on the difference between the output signals of the sensors;