JP2004053154A - Air conditioner with air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner with an air cleaner reducing the ventilating air resistance in a dust collecting part, reducing the load on a blower, mounting a high-tension power source part as an independent one to be detachable, easily demounting the dust collecting part and a counter electrode, and improving the safety and maintenance. <P>SOLUTION: In this air conditioner with the electric dust collection-type air cleaner having a heat exchanger and the blower mounted on an air passage connecting a suction port formed on a front upper part of a main body and a blowout port formed on a front lower part, and comprising an air filter detachably mounted on a rear side of the suction port, a corona discharging part 13 mounted at a rear part of the air filter and having the counter electrode 16 facing a discharging electrode 15 at an upstream side of the air current, and the dust collecting part 14 having a dust collecting electrode at its downstream side, the dust collecting part 14 is configurated by an electrically conductive netted member as the dust collecting electrode, and detachably mounted on a rear face of the counter electrode 16 to have the polarity same as that of the counter electrode. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner provided with an air precipitator of an electric precipitating type, and more specifically, to reduce the airflow resistance of a precipitator, reduce the load on a blower, and improve safety and maintenance. The present invention relates to a configuration of an air cleaning device.
[0002]
[Prior art]
BACKGROUND ART A conventional air conditioner with an air purifier includes, for example, one shown in FIG. In the figure, an air passage 5 connecting an inlet 3 provided with opening / closing panels 2a and 2b on a front surface 1a and an upper surface 1b of a main body 1 and an outlet 4 provided on a lower part of the front surface is attached to and detached from the back surface of the inlet 3. A freely mounted net-shaped air filter 12, an upper heat exchanger 6 formed to be divided into front and rear parts and bent into an inverted V-shape, and a lower heat exchanger 7 connected to a lower portion of the upper heat exchanger 6; , An air purifying device 30 attached to the frame 9 and arranged on the windward side of the front upper heat exchanger 6, and a blower 11. The front opening / closing panel 2a does not block the suction port 3a facing the air cleaning device 30.
During the normal operation, the open / close panels 2a and 2b are opened, and the air sucked from the suction port 3a4 and passing through the air purifying device 30 and the air not passing through are harmonized through the indoor heat exchanger 8 to tune. The Japanese air is blown by the blower 11 and blown out from the outlet 4 into the room.
[0003]
Further, as described in Japanese Patent Application Laid-Open No. 6-154651 shown in FIG. 4, the conventional air cleaning device includes a corona discharge section 38 on the upstream side of the air flow and a collector on the downstream side. A dust part 41 is provided, and a corona discharge part 38 is provided with a linear discharge electrode 36 and a plate-like counter electrode 37. The linear discharge electrode 36 is on the minus side of the power supply 34, and the counter electrode 37 is on the plus side of the power supply 34. And to the ground 35.
Although the corona discharge unit 38 of the present example gives a negative charge to the particles by generating a negative corona discharge, it is not always necessary to be bound by this shape, and applies a charge to the particles entering the corona discharge unit 38. Anything should do.
The dust collecting section 41 has guard electrodes 39a and 39b made of mesh on the upstream and downstream sides of the air flow, and a non-woven fabric of dielectric fiber as a filter 40 between the upstream guard electrode 39a and the downstream guard electrode 39b. Is sandwiched. The guard electrodes 39a and 39b are connected to the positive side of the power supply 34 and to the ground 35.
Here, the guard electrodes 39a and 39b may be any material having air permeability and conductivity such as punched metal. Further, the filter 40 may be made of a dielectric sponge, a porous ceramic, a conductor sponge, or the like, as long as it has air permeability.
The operation of the above configuration will be described. The particles charged by passing the airflow through the upstream corona discharge section 38 travel downstream while being mainly controlled by the vector force in the air flow direction, and eventually reach the vicinity of the dust collection section 41. Here, since the dust collecting portion 41 is composed of the guide electrodes 39a and 39b and the filter 40 having different aperture surfaces, the air flow generates a turbulent flow field at this boundary surface, and particles are generated on the upstream guide electrode. The probability of passing near the conductor 39a is increased as compared with the case of rectification. Since the force received by the charges is inversely proportional to the square of the distance, the Coulomb force received by the charged particles increases as the charged particles pass near the conductor near the upstream guide electrode 39a, and the particles are trapped by the guard electrode 39a. Become.
[0006]
Next, the particles that have passed through the upstream guide electrode 39a enter the inside of the filter 40 and are trapped by the filter 40. Furthermore, at the boundary between the most downstream side of the filter and the downstream guard electrode 39b, the guide electrode 39b and the filter 40 are formed with different aperture surfaces, so that at this boundary, the air flow creates a turbulent flow field. The probability that the particles pass through the vicinity of the conductor of the downstream guide electrode 39b is increased as compared with the case of rectification, and the dust collection is performed by the same process that has occurred at the interface between the upstream guide electrode and the filter 40.
[0007]
FIG. 5 shows an example of an assembly configuration diagram of a conventional air cleaning device. The discharge electrode 36 is stretched in a meandering manner on an insulating block provided in a frame portion of the main frame 51. The counter electrode 37 is detachably attached to an upper frame 53 in which a plurality of through holes 52 are provided at predetermined intervals in a state where the counter electrode 37 is located between the discharge electrodes 36 on the plate surface. Is detachably attached to the main frame 51.
The opposing electrode 37 is formed by bending a metal plate into a U-shaped cross section, and has a plurality of electrode portions 37a that penetrate into the through holes 52 of the upper frame 53 formed on the plate surface. In other words, the discharge electrodes 36 are opposed to each other between the electrode portions 37a.
The dust collecting portion 41 has a large number of belt-like synthetic resin sheets 55 stacked and held at predetermined intervals on a rectangular frame 54 which is detachably attached to the main frame 51. A handle 54a is integrally formed on one side of the frame 54.
In the above configuration, the user must appropriately remove dust adhering to each period. The dust collecting portion 41 can be easily detached from the main frame 51 by one-touch attachment / detachment by pulling down and pulling down the handle 54a.
[0008]
However, in the case of the configuration of the above-described conventional air cleaning device 30, as shown in FIG. 4, the dust collecting portion 41 has a three-layer structure in which the filter 40 is sandwiched between guard electrodes 39a and 39b. The load of the blower 11 to be generated increases, which consumes a large amount of electric power. In addition, since the thickness is large, there is a disadvantage that a large space is required.
Further, in the case of the assembly structure as shown in FIG. 5, the dust collecting portion 41 can be easily removed and cleaned. However, when dust attached to the counter electrode 37 is removed, the electrode portion 37a of the counter electrode 37 has an upper portion. Since it is inserted into the through hole 52 of the frame 53, one-touch attachment / detachment like the dust collecting portion 41 cannot be performed, and the removal and attachment work is extremely troublesome for the user. In addition, safety and maintainability when a spark or the like occurs in the corona discharge section 38 are insufficient.
[0009]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and reduces the airflow resistance of the dust collector, reduces the load on the blower, makes the high-voltage power supply unit independent and makes it freely detachable, and provides the dust collector with the counter electrode. It is an object of the present invention to provide an air conditioner with an air purifying device that can be easily removed and has improved safety and maintenance.
[0010]
[Means for Solving the Problems]
The present invention has been made in order to solve the above-mentioned problem, and a heat exchanger and a blower are provided in an air passage connecting an intake port provided on an upper front portion of a main body and an outlet provided on a lower front portion of the main body. A mesh-shaped air filter detachably mounted on the back side of the air filter, a corona discharge section provided at the rear of the air filter and having a counter electrode facing the discharge electrode on the upstream side of the air flow, and a collector section on the downstream side. In an air conditioner with an air purifying device provided with an air purifying device of an electrostatic precipitating system comprising a dust collecting portion provided with a dust electrode,
The dust collecting portion is formed of a conductive mesh member serving as a dust collecting electrode, and is detachably provided on a rear surface of the counter electrode so as to have the same polarity as the counter electrode.
[0011]
Further, the dust collecting portion and the counter electrode are connected by a magnet or a conductive spring.
[0012]
An air purifying unit main body comprising the corona discharge unit and the dust collecting unit; a high voltage power supply unit for supplying a high voltage to the discharge electrode, the counter electrode and the dust collecting electrode; It is composed of a power supply circuit for supplying power to the unit and a main board unit provided with a control unit, and at least the air cleaning unit main body and the high-voltage power supply unit are removably connected by a connector.
[0013]
Further, the high-voltage power supply unit and the main board unit are connected by a power supply line via a protection switch, and the protection switch is turned off when the air filter is removed and turned on when the air filter is mounted. I have.
[0014]
Further, an overcurrent breaker is provided in each of the high-voltage power supply unit and the main board unit, and when a spark occurs in the air cleaning unit main body, the supply of the high voltage and the power is stopped. .
[0015]
In addition, a protective cover is provided so that the front surface of the corona discharge unit is not touched by an external hand.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of an air conditioner with an air purifying device according to the present invention (the same applies to the conventional example), FIG. 2 is a configuration diagram of the air purifying device according to the present invention, and FIG. (A) is a method using a magnet, and (B) is a method using a spring.
[0017]
In the figure, an air passage 5 connecting an inlet 3 provided with opening / closing panels 2a and 2b on a front surface 1a and an upper surface 1b of a main body 1 and an outlet 4 provided on a lower part of the front surface is attached to and detached from the back surface of the inlet 3. A net-shaped air filter 12 that is freely mounted, an upper heat exchanger 6 that is formed by being divided into front and rear parts and bent in an inverted V-shape, and a lower heat exchanger 7 that is connected to a lower portion of the upper heat exchanger 6. And an air purifier 10 attached to the frame 9 and detachably mounted on the windward side of the front upper heat exchanger 6, and a blower 11. The front opening / closing panel 2a does not block the suction port 3a facing the air cleaning device 10.
During normal operation, the open / close panels 2a and 2b are opened, and the air sucked from the suction port 3a and passed through the air cleaning device 10 and the air not passed through are harmonized through the indoor heat exchanger 8, The conditioned air is blown by the blower 11 and blown into the room from the outlet 4.
[0018]
As shown in FIG. 2, the air cleaning device 10 includes an air cleaning unit main body 10a, a high-voltage power supply unit 10b, and a main board unit 10c.
The air cleaning unit main body 10a has a corona discharge section 13 on the upstream side of the air flow and a dust collection section 14 on the downstream side, and the corona discharge section 13 has a flat discharge electrode 15 and a flat discharge surface. An electrode 16 is provided, and a high voltage is applied between the linear discharge electrode 15 and the counter electrode 16 by the high voltage power supply unit 10b. The corona discharge unit 13 gives a charge to the entering particles by generating a positive or negative corona discharge depending on the polarity of the applied voltage.
[0019]
The dust collecting portion 14 is formed of a single conductive and breathable mesh member serving as a dust collecting electrode, and the dust collecting portion 14 and the counter electrode 16 are connected so as to have the same polarity. A dust collector 14 is detachably mounted on the rear surface of the counter electrode 16.
Thereby, the airflow resistance of the dust collecting section 14 is reduced, the load on the blower 11 is reduced, the power consumption is reduced, and the dust collecting section 14 is thinned, so that the size can be reduced.
[0020]
In the above configuration, the particles charged by passing through the corona discharge section 13 on the upstream side of the air flow advance downstream while being mainly controlled by the vector force in the flow direction of the air, and eventually the dust collection section 14 is reached. Since the force received by the charges is inversely proportional to the square of the distance, the Coulomb force received by the charged particles increases as the charged particles pass through the vicinity of the conductor of the dust collecting unit 14, and the particles are captured by the dust collecting unit 14. Become.
[0021]
FIG. 3 shows the connection between the dust collecting portion 14 and the counter electrode 16. FIG. 3A shows a method using a magnet, and the plurality of the counter electrodes 16 are connected at both left and right ends by band-shaped bars 16 a. A magnet 18a is provided on the back side of the upper end of the crosspiece 16a, and is fitted into the frame 17. On the other hand, the dust collecting portion 14 has strip-shaped bars 14a attached to both left and right ends, magnets 18b are provided on the upper surface side of the both bars 14a, and the frame 17 is inserted through an insertion hole 17a provided in the lower surface of the frame 17. It is configured to be inserted into. As a result, when the dust collecting part 14 is inserted, the magnets 18a and 18b are coupled by magnetic force, and the dust collecting part 14 and the counter electrode 16 are connected by the same electrode.
A handle 14b is provided at the lower end of the dust collecting section 14. By pulling down the handle 14b, the handle 14b can be easily detached from the frame 17, can be easily attached and detached, and can be easily cleaned.
[0022]
FIG. 3B shows a method using a conductive spring, in which conductive plate springs 20a protruding upward are provided at both the upper, lower, left and right ends of the bar 16a of the counter electrode 16, respectively. On the other hand, at the upper, lower, left and right ends of the crosspiece 14a of the dust collecting part 14, convex springs 20b projecting upward and bending inward are provided, respectively, so that the dust collecting part 14 is fitted into the frame body 19. I have. As a result, by fitting the opposing electrode 16 to the dust collecting portion 14 from above, the springs 20a and 20b are coupled by a spring force, and the dust collecting portion 14 and the opposing electrode 16 are connected by the same electrode. .
Further, by raising the counter electrode 16, the dust collecting portion 14 and the counter electrode 16 can be easily separated.
[0023]
As shown in FIG. 2, the air cleaning device 10 includes a high-pressure generating circuit 10b1 for supplying high pressure to the air cleaning unit main body 10a, the discharge electrode 15, the counter electrode 16, and the dust collecting portion 14. A high-voltage power supply unit 10b having a current breaker 10b2; and a main board unit 10c having a power supply circuit 10c1 for supplying power to the high-voltage power supply unit 10b, an overcurrent breaker 10c2, and a control unit 10c3. The air purifying unit main body 10a and the high-voltage power supply unit 10b are configured to be detachably connected to each other by the connector 20, so that each unit can be cleaned at the time of cleaning the air purifying unit main body 10 and at the time of maintenance and inspection of each unit. Can be easily removed, and maintainability can be improved.
[0024]
When a large current flows due to the generation of sparks due to the adhesion of dust or the like in the air purifying unit main body 10a, the overcurrent breaker 10b2 operates to stop supplying high pressure to the air purifying unit main body 10a. At the same time, the control signal from the high-voltage power supply unit 10b activates the overcurrent breaker 10c2 to stop the supply of power from the main board unit 10c to the high-voltage power supply unit 10b, thereby ensuring safety. be able to.
[0025]
Further, the high-voltage power supply unit 10b and the main board unit 10c are connected by a power supply line via a protection switch 21, and the protection switch 21 is turned off when the air filter 12 is removed and turned on when the air filter 12 is mounted. By doing so, danger due to electric shock or the like can be prevented, and safety can be ensured.
[0026]
Further, as shown in FIG. 2, a protective cover (not shown) made of a guard wire 22 or the like is provided on the front surface of the corona discharge portion 13 so that a hand cannot be touched from the outside. Similarly, danger due to electric shock or the like can be prevented, and safety can be ensured.
[0027]
As described above, the dust collecting portion 14 is formed of a single conductive and air-permeable mesh member serving as a dust collecting electrode, and the dust collecting portion 14 and the counter electrode 16 have the same polarity. The dust collector 14 is detachably attached to the rear surface of the counter electrode 16 to reduce the airflow resistance of the dust collector 14, reduce the load on the blower 11, and reduce power consumption. In addition, the dust collecting portion 14 can be easily removed and maintenance performance can be improved, and the dust collecting portion 14 can be reduced in size by making it thin.
Further, the high-voltage power supply unit 10b is made independent so that it can be freely attached and detached, and a protection circuit is provided, so that an air conditioner with an air purifier with improved safety and maintenance can be obtained.
[0028]
【The invention's effect】
As described above, in the present invention, the airflow resistance of the dust collection unit is reduced, the load on the blower is reduced, the high-voltage power supply unit is made independent and detachable, and the dust collection unit and the counter electrode can be easily removed. Thus, an air conditioner with an air purifier with improved safety and maintenance can be obtained.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an air conditioner with an air cleaning device of the present invention.
FIG. 2 is a diagram showing a cross section and a configuration of a main part of the air cleaning device of the present invention.
FIG. 3 is an enlarged view of a main part showing a connection between a dust collecting part and a counter electrode of the present invention, wherein (A) is a method using a magnet and (B) is a method using a spring.
FIG. 4 is a sectional view of a main part of a conventional air cleaning device.
FIG. 5 is an assembly configuration of a conventional air cleaning device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air conditioner main body 2a, 2b Opening / closing panel 3 Suction port 4 Outlet 5 Air passage 6 Upper heat exchanger 7 Lower heat exchanger 8 Indoor heat exchanger 9 Frame 10 Air purifier 10a Air purifier unit main body 10b High-voltage power supply unit 10b1 High voltage generating circuits 10b2, 10c2 Overcurrent circuit breaker 10c Main board unit 10c1 Power supply circuit 10c3 Control 11 Blower 12 Air filter 13 Corona discharge unit 14 Dust collection unit 14a, 16a Bar 14b Handle 15 Discharge electrode 16 Counter electrode 17, 19 Frame 17a Insertion holes 18a, 18b Magnet 20 Connectors 20a, 20b Spring 21 Protection switch 22 Guard wire

Claims (6)

A heat exchanger and a blower are disposed in an air passage connecting an intake port provided at an upper front portion of the main body and an outlet provided at a lower front portion, and a net-shaped air filter detachably mounted on the back side of the intake port. And a corona discharge unit provided at the rear of the air filter and having a counter electrode facing the discharge electrode on the upstream side of the air flow, and a dust collection unit provided with a dust collection electrode on the downstream side. In an air conditioner with an air purifier equipped with a dust collecting type air purifier,
The air is characterized in that the dust collecting portion is formed of a conductive mesh material serving as a dust collecting electrode, and is detachably disposed on a rear surface of the counter electrode so as to have the same polarity as the counter electrode. Air conditioner with cleaning device. The air conditioner with an air purifier according to claim 1, wherein the dust collecting part and the counter electrode are connected by a magnet or a conductive spring. The air cleaning device includes an air cleaning unit main body including the corona discharge unit and the dust collection unit, a high-voltage power supply unit that supplies a high voltage to the discharge electrode, the counter electrode, and the dust collection electrode, and a high-voltage power supply unit. 2. A power supply circuit for supplying electric power and a main board unit having a control unit, wherein at least the air cleaning unit main body and the high-voltage power supply unit are detachably connected by a connector. An air conditioner with an air purifying device as described in the above. The high-voltage power supply unit and the main board unit are connected by a power line via a protection switch, and the protection switch is turned off when the air filter is removed and turned on when the air filter is mounted. Item 4. An air conditioner with an air purifier according to item 1 or 3. An overcurrent breaker is provided in each of the high-voltage power supply unit and the main board unit, and when a spark occurs in the air cleaning unit main body, the supply of the high voltage and the power is stopped. 4. The air conditioner with an air purifier according to 1 or 3. The air conditioner with an air purifier according to claim 1, wherein a protective cover is provided on a front surface of the corona discharge unit so that a hand does not touch the outside from the outside.

Images