JP2002295876A - Air cleaner and air conditioner equipped with ion generating function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner and an air conditioner which can be made compact in size and whose production cost can be suppressed, and which are equipped with ion generating functions. SOLUTION: This air cleaner, equipped with a ion generating circuit, is one such that the main oscillation circuit of an ion generator and that of the air cleaner are made common, and the main oscillating circuit is composed of a transformer and switching elements.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier for collecting dust using a high-voltage power supply, and more particularly to an air purifier having an ion generating function, and further having the air purifier and the ion generating function. Related to air conditioners.

[0002]

2. Description of the Related Art Conventionally, an air purifier has been proposed which uses a high-voltage function generated from a high-voltage power supply to adsorb dust and dust in a room to an electrode. To briefly explain the configuration in this case, a commercial power supply of 100 V is boosted by a high-voltage power supply generator composed of a switching device such as a transformer or a transistor, and a voltage of about 5 KV generated here is applied to an electrode called a dust collecting electrode. The dust is collected using the electrostatic attraction force at this time.

In ion generators, it has recently been known that negative ions have a favorable effect on the human body. This configuration is similar to the above-mentioned air purifier, but differs from the air purifier in that a negative high voltage is applied to the electrodes particularly when negative ions are generated.

Heretofore, some devices have been proposed which have both the air purifier and the ion generator, that is, an air purifier having an ion generating function. It has the following configuration. FIG. 3 is a block diagram showing a schematic configuration diagram of a conventional air purifier having an ion generating function. As shown in FIG. 3, the conventional technology includes an external control circuit 10 configured to control an air cleaning function and a negative ion generation function configured by a microcomputer or the like, and the external control circuit 10 operates according to a signal from the circuit. High pressure power supply oscillation circuit for air purifiers 20
And the negative ion high voltage power supply oscillation circuit 30 are connected,
A dust collecting electrode 42 and an ion generating electrode 52 are connected to the two oscillation circuits, respectively.

[0005] The two high-voltage power supply oscillation circuits are provided together with main oscillation circuits 28 and 34 each composed of a boosting component such as a transformer and a switching component such as a transistor.
An output detecting circuit 24, an output limiting circuit 26, and an internal control circuit 32 for determining a driving state based on information from each electrode and the like are provided. A high-voltage output circuit 40 for dust collection and a high-voltage output circuit 50 for negative ions are provided between the two oscillation circuits and the dust collection electrode 42 and the ion generation electrode 52, respectively.

[0006]

In the conventional configuration as described above, a configuration in which a negative ion generator is added to an air purifier at the time of designing an apparatus is generally adopted. High-voltage power supply oscillation circuit for purifier 20
And the high voltage power supply oscillation circuit 30 for negative ions are provided separately. Therefore, providing two oscillation circuits in this way increases the number of components to be configured, and not only can not be reduced in size, but also raises problems such as an increase in production costs and a complicated assembly process.

Similarly, an air purifying function is often added to recent air conditioners, and in such a case, further miniaturization is desired.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an air purifier and an air conditioner which can be reduced in size, reduce production cost, have good productivity, and have an efficient ion generating function. And

[0009]

In order to solve the above-mentioned problems, the present invention has the following configuration. That is, in the first aspect, the main oscillation circuit of the ion generator and the air purifier is a common main oscillation circuit, and the main oscillation circuit includes a transformer and a switching element. An air purifier equipped with According to claim 2, in an air purifier having an ion generating function, the ion generator generates negative ions by an ion generating electrode, and the air purifier performs a dust collecting action by a dust collecting electrode. A negative high voltage is generated in the ion generating electrode, a positive high voltage is generated in the air purifier, and the generation of both high voltages is performed by a common main oscillation circuit. Air purifier. According to a third aspect, there is provided an air conditioner wherein the air purifier according to the first or second aspect is mounted on an air conditioner.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a schematic circuit diagram of an air purifier having an ion generating function according to an embodiment of the present invention. In FIG. 1, an external control circuit 10 constituted by a microcomputer or the like controls an air purifying function and a negative ion generating function.
The external control circuit 10 is connected to a high-voltage power supply oscillation circuit 100 operated by a signal from the circuit, and the oscillation circuit is connected to a dust collection electrode 42 and an ion generation electrode 52. . The high-voltage power supply oscillation circuit 100 includes, together with a main oscillation circuit 150 including a boosting component such as a transformer and a switching component such as a transistor, an output detection circuit 120 and an output limiting circuit that determine a driving state based on information from each electrode and the like. 130, an internal control circuit 110 is provided. A high-voltage output circuit for dust collection 40 and a high-voltage output circuit for negative ions 50 are provided between the high-voltage power supply oscillation circuit 100 and the dust collection electrode 42 and the ion generation electrode 52, respectively.

FIG. 2 is a circuit diagram of an air purifier having a negative ion generating function obtained in this manner. FIG.
, The external control circuit 10 is connected to the internal control circuit 110, the output limiting circuit 130, and the main oscillation circuit 150, and the internal control circuit 110 is connected to the output limiting circuit 130,
Is the output detection circuit 120, the output detection circuit 120 is the main oscillation circuit 150, the main oscillation circuit 150 is through the dust collection high voltage output circuit 40 and the negative ion high voltage output circuit 50, Electrode 42 for dust collection and electrode 52 for ion generation
Connected to each other.

More specifically, the internal control circuit 110 is composed of a constant voltage element, a diode, a capacitor, and a resistor. The output limiting circuit 130 mainly includes a switching element such as a transistor, a resistor, a capacitor, and a constant voltage element, and uses the signal from the output detection circuit 120 as a judgment material to generate a drive signal to the main oscillation circuit 150 at the subsequent stage. The detection circuit 120 is a main oscillation circuit 1 in a subsequent stage.
It detects the status of 50 transformers and detects the current drive status of the transformer. The main oscillation circuit 15
Numeral 0 mainly includes a transformer 150, a switching element including a transistor for causing the transformer 150 to oscillate, and a fuse resistor. Oscillation circuit 10
0, which are arranged on the primary side of the transformer 150. By oscillating from the above configuration on the secondary side of the transformer 150, a high voltage of about 5 KV is obtained on the plus output side and about 7 KV on the minus output side.

On the secondary side of the transformer 152, a high voltage output circuit 40 for dust collection is connected to the positive voltage output portion, and a high voltage output circuit 50 for the negative ion is connected to the negative voltage output portion. The dust collecting high voltage output circuit 40
Is a positive voltage doubler rectifier circuit composed of a capacitor, a constant voltage element, and a resistor, while the negative ion high voltage output circuit 50 is a negative voltage doubler rectifier circuit composed of a constant voltage element and a capacitor. It is composed of The voltage doubler rectifier circuit is a triple voltage rectifier circuit in the embodiment shown in FIG. Further, the high-voltage power supply oscillation circuit 100, the high-voltage output circuit 40 for dust collection, and the high-voltage output circuit 50 for negative ions form a high-voltage power supply.

Here, the above configuration may satisfy at least the following configuration. That is, the main oscillation circuit of the ion generator and the air purifier is a common main oscillation circuit, and the main oscillation circuit includes a transformer and a switching element. The ion generator outputs negative ions by an ion generating electrode, the air purifier performs a dust collecting action by a dust collecting electrode, and a negative high pressure is generated in the ion generating electrode, and the air A positive high voltage is generated in the purifier, and the generation of both high voltages is performed by a common main oscillation circuit. The “common main oscillation circuit” only needs to share at least the transformer 152.

The operation of the above configuration will be described. A commercial power supply (not shown) is connected to the primary side of the transformer 152,
This voltage is boosted by the transformer 152 and several KV is applied to the secondary side.
Voltage appears. Further, the voltage thus obtained is converted and rectified by a high voltage output circuit 40 for dust collection and a high voltage output circuit 50 for negative ions, and a plus and minus voltage of about 7 KV is collected. It is supplied to the dust electrode 42 and the ion generation electrode 52. The transformer 152 constantly outputs a high voltage plus and minus voltage alternately. Here, in the present invention, only the positive high voltage is supplied to the dust collecting electrode 42 for the air purifier, and only the negative high voltage is supplied to the ion generating electrode 52 for the negative ion generator.

In the above configuration, the output limiting circuit 13
In the region where 0 works, the output current is stabilized by the load fluctuation of each output, but the output voltage fluctuates, as generally referred to as a square-shaped characteristic. When the high voltage power supply enters this operation area, that is, the area where the restriction works, the output voltage decreases,
The output voltage from the negative ion high voltage output circuit 50 decreases. This voltage drop is lower than the output voltage required for generating negative ions by corona discharge. In this high-voltage power supply, a triple voltage rectifier circuit is provided as the negative ion high-voltage output circuit 50 in order to compensate for the decrease in the output voltage.

Further, in the above-mentioned high-voltage power supply, the output limiting circuit 130 prevents the operation of the high-voltage power supply oscillation circuit 100 for a safe operation when the load of the high-voltage power supply is short-circuited due to an abnormality or the like. By making the counter electrode from the high voltage output circuit 50 for negative ions common to the ground line connected to the output limiting circuit 100, even if the electrode 52 for ion generation is short-circuited, an abnormality is detected and the high-voltage power supply oscillation circuit 100 Can be prevented. That is, by making the ground line of the high voltage power supply and the ground line of the ion generating electrode 52 common,
Even if any output is short-circuited due to abnormality or the like, the protection operation of the device can be activated. Here, the limitation of the output current is determined based on the potential difference between the secondary signal line of the transformer 152 and the ground line.

In the above description, a device as an air purifier having a negative ion generating function is shown, but such a device may be mounted on an air conditioner. Recently, air conditioners equipped with an air purifying function on their own, and air conditioners equipped with a negative ion generator have been commercialized. An air purifier having a negative ion generating function as in the invention may be added. In this case, the device can be designed with a size similar to that of an air conditioner equipped with a conventional air purifier or a negative ion generator, and it is possible to prevent the device from becoming larger due to additional components.

[0019]

According to the above configuration, the main oscillation circuit which has been provided separately in the past can be integrated into one, and the transformer and other electronic parts constituting the main oscillation circuit can be shared. The size can be reduced, and the production cost can be reduced at the same time. As is well known, the transformer has a larger outer size than other electronic components, and this can be reduced, so that a remarkable effect of miniaturization can be obtained.

In addition, in the conventional manufacturing process, the inspection of the main oscillation circuit is performed. However, by reducing the number of the main oscillation circuit as in the present invention, the inspection process can be reduced and the manufacturing process can be simplified. Further, in the present invention, in order to improve the output efficiency, by using a negative high voltage, which has not been used conventionally, for the negative ion high voltage power supply, an efficient device can be realized and the size can be reduced, and the production cost can be reduced. Thus, an air purifier and an air conditioner having an ion generating function with high productivity can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of an air purifier having a negative ion generating function of the present invention.

FIG. 2 shows the circuit diagram of FIG.

FIG. 3 shows a block diagram of a conventional air purifier having a negative ion generating function.

[Explanation of symbols]

 In the drawings, the same reference numerals indicate the same or corresponding parts. REFERENCE SIGNS LIST 10 external control circuit 20 high-voltage power supply oscillation circuit for air purifier 30 high-voltage power supply oscillation circuit for negative ions 28, 34, 150 main oscillation circuit 40 high-voltage output circuit for dust collection 42 electrode for dust collection 50 high-voltage output circuit for negative ions 52 Ion generation electrode 100 High voltage power supply oscillation circuit 110 Internal control circuit 120 Output detection circuit 130 Output limiting circuit 152 Transformer

Claims (3)

[Claims] An ion generating function characterized in that a main oscillating circuit of an ion generator and an air purifier is a common main oscillating circuit, and the main oscillating circuit comprises a transformer and a switching element. Air cleaner. 2. An air purifier having an ion generating function, wherein the ion generator generates negative ions with an ion generating electrode, and the air purifier performs a dust collecting action with a dust collecting electrode. A negative high voltage is generated in the generating electrode, a positive high voltage is generated in the air purifier, and the generation of both high voltages is performed by a common main oscillation circuit. Air cleaner. 3. An air conditioner comprising the air purifier according to claim 1 mounted on the air conditioner.