JPH02164465A - Air purifying device - Google Patents

Abstract

PURPOSE:To make the operation inoperative when a dust collecting section is not mounted and inform an abnormal state to a user by installing a mechanism for sensing whether the dust collecting section is mounted or not to an electric dust collector. CONSTITUTION:A dust collecting section 3 is incorporated in a dust collector main body independently and removably to bring a high voltage terminal 9 and a ground terminal 10 disposed on the dust collector main body side in contact with respectively and anode contactor 11 and a ground pole contactor 12 disposed on the frame of the dust collector section 3 in the given mounting position. A spring-shaped contactor 13 for bringing the high voltage terminal 9 and the ground terminal 10 in short circuit when the dust collecting section 3 is not mounted and releasing the short circuit state when the dust collecting section 3 is mounted is disposed between the high voltage terminal 9 and the ground terminal 10. As a result, operation is made inoperative when the dust collecting section is not mounted to inform an abnormal state to a user.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an air purifying device comprising an electrostatic precipitator in which an ionization part and a dust collection part are independent, and the dust collection part can be stored and taken out independently. It is.

(Prior art) An air cleaning device consisting of an electrostatic type electrostatic precipitator that has an ionization part and a dust collection electrode part, charges the dust floating in the air, and then collects the dust by electrostatic electrodeposition. Since the dust section must be cleaned or replaced, the structure is such that the ionization section (2) and the dust collection section (3) are removed from the dust collector body (1) as one body, as shown in Figure 6, and the As shown in Figure 7, there is a structure in which the ionization part (2) and the dust collection part (3) are made independent, and only the dust collection part (3) is taken out independently (for example, see Japanese Patent Application Laid-Open No. 153159/1983). In particular, the latter structure has been increasingly used from the viewpoint of workability.

Figures 9 and 1O are based on the trends of the times,
This shows an example of the electrostatic precipitator proposed earlier by the present applicant. An ionization section (2) and a dust collection section (3) are housed in a front-to-back arrangement from the mouth side, and the dust collection section (3) is located at the arrow lines (A), (B),
(C) It can be inserted and removed by sliding in either direction.

The ionization section (2) is made up of counter-polar plates (4), (41...) and counter-polar plates (41, (parallel to the center line between 41 It consists of ionizing wires (5), (5), etc., which are stretched across the air, and serves as a place where fine dust contained in the circulating air is charged with ions.

On the other hand, the dust collection part (3) has an anode (6) and a dust collection ground electrode (7).
It has a structure in which a laminate is formed by stacking the laminates alternately with voids that allow air circulation, and is housed in a frame body (8) that is a short square tube. A long anode (6) made of a long electrode plate made of a band-shaped metal foil and molded around it with insulating synthetic resin, and a long anode (6) made of a wave band-like metal foil with continuous waves in the longitudinal direction. Dust ground electrode (7)
After superimposing them in contact with each other, the laminated body is formed by winding them into a flat elliptical coil shape, and the anode (6) and the dust collection ground electrode (7) are shaped like corrugated cardboard rolled into a flat circle. There are many voids separated between them.

Then, this laminate is housed in a frame (8), and at the outermost end of the winding, the two poles f61. (7) are separated and electrically and mechanically connected to the anode contact αυ and the ground electrode contact side, respectively, as shown in Figure 10. In the pushed-in state, both contacts αυ and @ come into elastic contact with the high voltage terminal (9) and the ground terminal aφ provided on the main body side, respectively.

(Problem to be Solved by the Invention) However, in the case of a method in which only the dust collecting section such as a ridge is taken out independently, if operation is started without the dust collecting section installed, dirt and dust ionized in the ionization section will be removed. The dust is not collected and is re-released into the rear stage of the device or into the room, as shown in FIG. Needless to say, these ionized dust particles are positively or negatively charged, and therefore tend to adhere to the rear stages of the device and indoor walls that have a potential difference with the ionized dust particles, and are highly likely to contaminate the device and the indoor walls. Nevertheless, up to now, no device has appeared that pays attention to this point.

The present invention deals with the above-mentioned situation by installing a mechanism that can detect whether or not the dust collector is attached, thereby making it impossible to operate when the dust collector is not attached, thereby notifying the user of an abnormality. The purpose is to

(Means for Solving the Problems) That is, the present invention, which meets the above object, has an ionization section and a dust collection section (3), each of which is independent, and the dust collection section (3) is independent. In an air purifying device consisting of an electric precipitator that is removable from the dust collector body (1), the dust collector (3)
) A mechanism is attached to the dust collector to detect whether or not it is attached.

Therefore, the invention according to claims 2 to 4 indicates the specific contents of the detection mechanism, and the invention according to claim 2 is such that when the dust collecting part (3) is not installed in the air purifying device, the high pressure side and the ground are connected to each other. A spring-like short circuit a is provided between the high-voltage side and the ground side of the power supply circuit on the side of the dust collector body (1), which short-circuits the side and releases the short-circuit when the dust collector (3) is attached.

Further, the invention of claim 3 is turned on by installing the dust collecting part (3).
Or turn off the switch (the same IG (the dust collector body)
1) Interposed in the side power supply circuit.

Furthermore, the invention according to claim 4 focuses on the electrical load of the dust collector (3), and a control device (10) capable of detecting this is attached to the power supply circuit of the dust collector body (11 examples).

(Function) By providing a mechanism to detect the presence or absence of the dust collecting section (3) as described above, a high voltage power supply generally has a drooping characteristic as shown in Figure 2, so when the load becomes the heaviest due to a short circuit, the voltage will drop. The voltage of the ionization section becomes lower than the corona generation limit, which kills the function of the ionization section.
Claim 3 detects a voltage drop in the dust collecting section and stops the operation, and according to claim 3, the switch a is released and the power supply circuit opens and the operation is stopped.
Eliminates concerns about re-emission of ionized dust.

The same is true when installing two control devices; when the electrostatic precipitator deviates from its normal output characteristics and detects no load, the voltage increases or the current decreases compared to the normal range. 3) to prevent contamination of the equipment and room due to operation without the dust collector installed.

(Example) The present invention will be described in detail below with further reference to the accompanying drawings.

FIG. 1 shows an example of the structure of the contact part of the dust collection part which forms the main part of the air purifying device according to the present invention, and although it is shown schematically,
As shown in Figures 8 and 9, the dust collection section (3) consists of a molded anode (6) and a dust collection ground electrode (7) made of a thin metal plate, which are alternately stacked with gaps in between that allow air to circulate. The laminated body consisting of the above is housed in the frame (8), and the thin metal plate of the anode (6) is connected to the anode contact αυ, and the dust collecting ground electrode (7) is connected to the ground electrode contact. and when it is attached to the predetermined position on the dust collector body, both contacts αD, (
2) is in elastic contact with a high voltage terminal (9) and a ground terminal αφ provided on the main body side, respectively.

In the above configuration, in the present invention, when the dust collecting section is not installed, the high voltage side and the ground side of the power supply circuit including the high voltage terminal (9) and the ground terminal αl are short-circuited, and the dust collecting section is closed. A spring-like shorting element α whose short circuit is released when attached is provided interposed between the high voltage terminal (9) and the ground terminal 0ω.

Therefore, according to such a configuration, the high voltage power supply generally has the voltage-current relationship shown in the drooping characteristic shown in Fig. 2.
When expressed as l, the voltage increases in a region where the load is small, and conversely, the voltage decreases in a region where the load is large. Therefore, as mentioned above, when the load becomes the heaviest due to a short circuit, the voltage decreases, and the voltage of the ionization section shown by the arrow becomes lower than the corona generation limit, and the function of the ionization section is destroyed. In other words, operation is virtually impossible, and ionized dust is prevented from being re-released into the room.

Such a short-circuit mechanism is extremely useful when the voltages of the ionization section and the dust collection section are equal, but as shown in Figure 1 (c), the voltage between the ionization section and the dust collection section is divided and the voltage If they are different, even if the dust collection section is short-circuited, it will be difficult to reduce the voltage of the ionization section to below the corona generation limit because of the partial voltage resistance of the ionization section.

For this purpose, as shown in Fig. 1 (c), a comparator is connected to the voltage dividing resistor on the dust collector side to reduce the voltage of the voltage dividing resistor.
Alternatively, the high voltage power source may be stopped by detecting an increase in current.

This system is a useful device because it can be used even if the ionization section and dust collection section are powered by separate power sources.

Incidentally, there is an invention previously proposed by the present applicant as a device for detecting a drop in the output voltage of a high-voltage power supply, but adding the above-mentioned short circuit mechanism to such a device is a practically preferable means. be.

FIG. 3 shows a main part of the invention as claimed in claim 3 as another embodiment of the present invention, in which case a dust collection section ( A switch αa is provided which is turned ON or OFF when the part 3) is attached, and the circuit is opened when the dust collector part 3 is not attached. Therefore, in this case as well, the function of the ionization section is lost when the dust collection section is not attached, and re-emission of ionized dust into the room or the like is prevented.

Further, FIG. 4 shows the essential parts of the invention described in claim 4 as yet another embodiment of the present invention, and although the dust collecting section is omitted, the inside of the dust collecting section is as shown in FIG. 10. As shown in FIG. 2, a self-discharge resistor Q19 is incorporated to force a constant current to flow during operation, and the power supply includes a high voltage terminal (9) and a ground terminal (10). A no-load detection function is added to a part of the circuit to detect the load, especially no-load (Vo), and the required load (Vo) is compared with the appropriate standard load (Vs).
A control device α is attached to the Vc).

In this case, detection may be performed by detecting an increase in voltage due to a decrease in load, or by detecting a decrease in current.

These can be easily done using known comparators.

As described above, in the present invention, in any case, the function of the ionization part is automatically killed by detecting the presence or absence of the dust collection part and displaying a message to inform the user of the abnormality.
This prevents ionized dust from being re-released into the dust collection section at the rear stage of the device or into the room.

In the above embodiments, the case where the dust collecting section (3) is made of a coiled laminate has been described, but the present invention is not limited to a separate structure of the dust collecting section made of such a coiled laminate. Needless to say, the present invention is applicable to all air purifying apparatuses consisting of electrostatic precipitators with removable dust collectors.

(Effects of the Invention) As described above, the present invention has an ionization section and a dust collection section, each of which is independent, and in particular, the dust collection section is independently removable. This is a cleaning device with a mechanism that detects whether or not the dust collector is installed.The detection mechanism detects whether the dust collector is not installed and displays a message to notify the user, ensuring that the dust collector is installed. As a result, the situation in which the dust collector is not installed can be completely avoided, and the re-release of ionized dust caused by operation without the dust collector installed into the rear stage of the equipment or into the room can be completely prevented. It also has a remarkable effect of preventing environmental pollution indoors and the like.

Furthermore, since abnormalities in the device can be known through the above detection, accidents caused by operation without the dust collector installed can be eliminated, and damage to the device can also be avoided.

Claims 2 to 4 further embody the above-mentioned detection mechanism to detect whether or not the dust collector is attached by current detection or voltage detection, respectively. When the system is not working, the high voltage side and the ground side are short-circuited, and a short circuit is installed to release the short circuit by installing the dust collector, which causes the voltage drop to kill the function of the ionization unit or stop operation. It is easy to modify existing dust collectors.

In addition, the invention according to claim 3 can be turned on by installing the dust collecting section.
Alternatively, the mechanism is extremely simple, as it can be detected using a switch that turns off.

Furthermore, the invention according to claim 4 is equipped with a control device capable of detecting the electrical load of the dust collector, which not only detects whether the dust collector is attached but also maintains the output characteristics of the dust collector within an appropriate range to improve operational efficiency. It has the effect of tightening.

[Brief explanation of the drawing]

Figure 1 ((), (u), (++) is a schematic diagram showing one example of the detection mechanism of the air purifier of the present invention, (a) is when the dust collector is attached, (u) is when it is removed, ( c) shows an example of detecting a voltage drop in the dust collecting section. Fig. 2 is an explanatory diagram of the operation of the detection mechanism in Fig. 1, and Fig. 3 (() and (Kl) show other embodiments of the detection mechanism. In the schematic diagram shown, (a) shows when the dust collector is installed.
(0) is the time of withdrawal. FIG. 4 is a schematic diagram showing another embodiment of the detection mechanism, FIG. 5 is an explanatory diagram of its operation, and FIGS. 6 and 7 are schematic diagrams showing each side of a conventional air purifying device. Fig. 8 is an explanatory diagram of the drawbacks of the conventional device, and Fig. 9 is an illustration of the air purifying device used in the present invention.
FIG. 10 is a schematic diagram of the structure of the contact portion of the dust collecting section of the apparatus shown in FIG. 9. (1)...Dust collector body, (3)...Dust collection section, (6
)...Anode, (7)...Dust collecting ground electrode, (8)...
・Frame body, (9)...High voltage terminal, a[...Grounding terminal, αυ...Anode contact, (2)...Grounding electrode contact, αturbidity...Short switch, 041・...Switch, α order...Control device. Figure 10

Claims (4)

[Claims] 1. In an air purifying device comprising an electric precipitator having an ionization part and a dust collecting part (3), each of which is independent, and the dust collecting part (3) being independently removable from the dust collector main body (1), An air purifying device characterized in that the dust collector is provided with a mechanism for detecting whether or not a dust collector is attached. 2. The dust collector body (1) allows the dust collection part (3) to be taken out independently.
), and then attach the dust collector body (
The high voltage terminal (9) and the ground terminal (10) provided on the side 1) can be contacted with the anode contact (11) and the ground electrode contact (12) provided on the frame of the dust collecting section (3), respectively. In an air purifying device consisting of an electric precipitator, when the dust collector is not installed,
Short-circuit the high voltage terminal (9) and the ground terminal (10), and
A spring-like short circuit (1) that releases the short circuit by attaching 3).
3) is installed between the high voltage terminal (9) and the ground terminal (10). 3. The dust collecting part (3) is removably assembled into the dust collector main body (1), and in the predetermined mounting position, the dust collector main body (1)
An electrostatic precipitator in which a high voltage terminal (9) and a ground terminal (10) provided on the sides can be contacted respectively with an anode contact (11) and a ground electrode contact (12) provided on the dust collecting section frame. An air purifying device characterized in that a switch (14) that is turned on or off when a dust collector (3) is attached is provided in the power circuit of the dust collector main body (1). 4. The dust collecting part (3) is removably incorporated into the dust collector main body (1), and in the predetermined mounting position, the dust collector main body (1)
The high voltage terminal (9) and ground terminal (10) provided on the side can contact the anode contact (11) and ground electrode contact (12) provided on the frame of the dust collecting section (3), respectively. An air purifying device consisting of an electric precipitator, characterized in that a control device (15) capable of detecting the electrical load of the dust collecting part (3) is attached to the power supply circuit on the side of the dust collector main body (1). Air purification device.