JP2003294276A - Minus ion generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a minus ion generator which stably generates minus ion even when humidity is low. <P>SOLUTION: An electrode 7 is provided in a air passage 2 near an air blow- out port 4 of a frame 1 from which air of a air blower fan 5 is blown out, and a conductive member 8 mounted in the state insulated from a member in contact within the frame 1 separated from the electrode 7 is arranged. In the frame 1, high-voltage terminals 6b and 6c putting out a direct-current high voltage by a high-voltage transformer 6 and a rectification circuit 6a is provided, the minus high-voltage terminal 6b is connected to the electrode 7, the plus high-voltage terminal 6c is connected to the conductive member 8, and minus ion is generated by applying a direct-current high voltage between the electrode 7 and the conductive member 8. A humidification chamber 9 is provided surrounding a wall of the pair passage 2 outside the air passage 2, a lower part of the humidification chamber 9 is provided with a humidification water tank 10 for reserving water for humidification and a humidification means for evaporating the water in the humidification water tank 10, and by filling inside the humidification chamber 9 with steam generated by the humidification means 11, electric charge of the frame 1 is prevented. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a negative ion generating device incorporated in an air purifier or the like to generate a large amount of negative ions.

[0002]

2. Description of the Related Art It has been noted that negative ions existing in the air have a function of keeping a person's healthy condition and feeling refreshed. It is preferred that a negative ion generator is incorporated in the frame of the air conditioner so that negative ions can be released indoors together.

That is, an air flow passage is arranged in a frame in which air-conditioned air flows, and an air blowing fan for producing an air flow in the air flow passage and an air blowing outlet provided at an end of the air flow passage are provided. A needle-shaped electrode is installed in the air flow path near the air outlet, and a plate-shaped electrode having a certain length is installed in the air flow path spaced about 10 mm from the electrode. It is provided. A rectifier circuit is installed at both ends of the step-up coil of the high-voltage transformer to obtain a high DC voltage.The negative high-voltage terminal of the high-voltage transformer is connected to the needle-shaped electrode, and the positive high-voltage terminal is connected to the plate electrode. Connected.

Since the electrode and the plate-like electrode mounted in the air flow path face each other in the state where a high DC voltage is applied, the air passing through the air flow path is ionized to generate negative ions. Can be made.

In order to increase the amount of negative ions generated, it is necessary to increase the DC voltage applied between the electrode and the plate electrode. However, as the number of negative ions increases, the current flowing through the high voltage circuit increases and the electrodes deteriorate. There is a problem that the durability becomes faster and the durability is lost. Also, when the voltage applied between both electrodes is high like this, corona discharge is likely to occur and the amount of ozone generated which has a high possibility of adversely affecting the human body increases. There is a point.

Therefore, the applicant provided a conductive member, which is in an insulating state with a contact member instead of the plate-like electrode, inside the frame body, and the conductive member inside the frame body was insulated from the electrode in the air flow path by the insulator body. We have proposed that a high DC voltage be applied between the member and the insulator itself facing the electrode while being positively charged, so that the electrons that fly out of the electrode go to the frame body and directly Since no current flows in the form of discharge, air can be efficiently negatively ionized, and a large amount of negative ions can be generated. In addition, since there is no plate electrode facing the electrode at all, corona discharge such as generation of ozone and discharge phenomenon in which the electrode directly goes into the air toward the plate electrode do not occur.
(See JP 2001-338744 A)

[0007]

By the way, the generation amount of negative ions is greatly influenced by the indoor humidity.
It is generally said that the environment in which the indoor humidity is about 40 to 60% produces the most negative ions. Also, some of the generated negative ions are adsorbed to the frame, but when there is indoor humidity, the negative charges are released into the air by the action of water molecules in the air, so the frame is not charged. Is.

However, when the indoor humidity is low and the amount of water molecules in the air is reduced, it becomes difficult to release the charges from the frame, so that the frame is easily charged due to adsorption of negative ions or friction, and the frame is easily charged. If was negatively charged, the discharge was weakened and the amount of negative ions generated was drastically reduced or stopped.

Further, the dust contained in the air is positively or negatively charged and disappears when the negative ions emitted from the air outlet are adsorbed to the dust in the air. As the number of negative ions increases, the number of negative ions that disappear immediately after being discharged from the air outlet also increases, and the number of negative ions discharged into the room decreases.

[0010]

SUMMARY OF THE INVENTION The present invention solves the above problems by forming an air flow path 2 in a frame 1 and at the end of the air flow path 2 an air suction port 3 and an air The air outlet 4 is provided, the air passage 2 from the air inlet 3 to the air outlet 4 is provided with an air blower fan 5 that creates an air flow, and the frame 1 is provided with a high-voltage transformer including a booster coil. 6 is built in, and a rectifier circuit 6 is provided on the output side of the high-voltage transformer 6.
High-voltage terminals 6b and 6c for direct current are provided via a, an electrode 7 is arranged in the air flow path 2 near the air outlet 4, and a member that comes into contact with the inside of the frame 1 separated from the electrode 7 And a conductive member 8 in an insulating state are arranged, the negative high voltage terminal 6b of the high voltage transformer 6 is connected to the electrode 7, and the positive high voltage terminal 6c of the high voltage transformer 6 is connected to the conductive member 8 in the frame body 1. In the negative ion generator that applies a high DC voltage between the electrode 7 and the conductive member 8, the humidification is provided adjacent to the outside of the air flow path 2 so as to surround the wall of the air flow path 2 A chamber 9, a humidifying water tank 10 located below the humidifying chamber 9 for storing humidifying water, and a humidifying device 11 for vaporizing the water in the humidifying water tank 10 are provided, and the steam generated by the humidifying means 11 is humidified. By filling the inside of the chamber 9, the air flow path 2
This is to prevent the wall from being charged.

The humidifying means 11 is a vaporization filter 1
The vaporization filter 11a has a simple structure and can perform efficient humidification because the amount of water vapor generated changes depending on the indoor humidity.

Further, the humidifying chamber 9 through which the air passage 2 penetrates
An opening 9a is provided on the upper surface of the air conditioner, and the humidified air in the humidifying chamber 9 is sent from the opening 9a to the periphery of the air outlet 4, so that the amount of dust in the vicinity of the air outlet 4 decreases and disappears even when the indoor humidity is low. Since the number of ions is reduced, more negative ions can be released indoors.

[0013]

The electrode 7 is provided in the air passage 2 in the vicinity of the air outlet 4 where the air is blown by the air blowing fan 5, and the conductive member 8 which is in an insulating state with the contacting member is provided in the frame 1. When a high DC voltage is applied between the electrode 7 in the air flow path and the conductive member 8 in the frame 1 so that the negative high voltage terminal 6b is applied to the electrode 7 side, the insulator itself is positively charged. On the other hand, it is facing the electrode 7, and the electrons jumping out of the electrode 7 are directed to the frame body 1 to neutralize neutral air molecules into negative ions. Therefore, since no current flows in the form of direct discharge, air can be efficiently negatively ionized, and a large amount of negative ions are generated.

The air flow path 2 is provided around the air flow path 2.
The humidifying chamber 9 is provided so as to surround the outer wall of the humidifying chamber 9. The water stored in the humidifying water tank 10 located under the humidifying chamber 9 is vaporized by the humidifying means 11, and the generated steam fills the humidifying chamber 9. Therefore, the electric charge adsorbed on the wall of the air passage 2 is released into the humidified air in the humidifying chamber 9, so that the air passage 2 is not charged.

The humidifying means 11 is replaced with a vaporization filter 11a.
With this configuration, the vaporization amount decreases when the indoor humidity is high and the charging is difficult to occur, and the vaporization amount increases when the humidity is low and the charging is likely to occur.

Further, an opening 9a is provided on the upper surface of the humidifying chamber 9 through which the air flow passage 2 penetrates, and the humidified air in the humidifying chamber 9 is sent from the opening 9a to the periphery of the air outlet 4 and the frame 1 is opened. Since the dust contained in the air flowing from the surroundings to the air outlet 4 absorbs the moisture in the humidified air and does not reach the air outlet 4, it is possible to increase the amount of negative ions released into the room.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in the drawings. 1 is a frame of an air conditioner composed of an air cleaner, 2 is an air passage formed in the frame 1, and 12 is an air passage 2 Is a partition plate that divides the room into an upper chamber A and a lower chamber B, and 12a is a partition plate 1
Partition plate 12 that connects the upper chamber A and the lower chamber B sandwiching 2
The opening 3 provided in the center of the frame is a frame 1 below the partition plate 12.
Air inlets 4 formed by slit-shaped openings provided in the side wall of the air outlet 4 are air outlets provided in the upper part of the frame 1 at the end of the upper chamber A of the air flow path 2.

Reference numeral 13 denotes a filter mechanism provided in the lower chamber B of the air flow path 2 inside the air suction port 3, reference numeral 13a denotes a filter frame which constitutes the filter mechanism 13 and accommodates a filter therein.
Reference numeral 14 is a guide for holding the filter frame body 13a provided in the lower chamber B, and is a filter frame body 13a of the filter mechanism 13.
Is detachably stored along the guide 14.

Reference numeral 5 denotes an air blowing fan provided in the upper chamber A of the air passage 2. When the air blowing fan 5 is operated, the room air sucked into the lower chamber B from the air suction port 3 is opened.
Toward 2a, the filter mechanism 13 turns the air into clean air, which is sucked into the upper chamber A, and is blown out from the air outlet 4 that opens at the top of the frame 1.

Reference numeral 15 is an operation switch of the air conditioner, 16 is an operation panel equipped with various switch groups of the air conditioner, 1
Reference numeral 7 is a microcomputer board for controlling the air conditioner, 18 is a relay device for controlling energization of the high voltage generating circuit, and 19 is the interior of the microcomputer board 17 for controlling the air blowing fan 5 and the relay device 18 of the high voltage generating circuit. This is a control device, and when the operator instructs each operation mode through the operation panel 16, the specified operation can be executed.

Reference numeral 6 denotes a high-voltage transformer composed of a booster coil arranged at a proper position in the frame body 1 away from the air flow path 2, 6a denotes a rectifying circuit connected to an output side terminal of the high-voltage transformer 6, and 6a.
b is a negative high voltage terminal of the rectifier circuit 6a, 6c is a positive high voltage terminal of the rectifier circuit 6a, and both high voltage terminals 6b.
A high voltage of about 6 KV is output between 6c.

Reference numeral 7 denotes a needle-shaped electrode projecting from the wall surface of the air passage 2 near the air outlet 4 into the air passage 2, and the electrode 7 is an output of the high-voltage transformer 6 and a negative high voltage terminal. 6b is connected. Reference numeral 8 denotes a conductive member arranged at an appropriate position in the frame body 1, and the conductive member 8 is connected to the plus high voltage terminal 6c.

The member that comes into contact with the conductive member 8 is made of an insulating material such as synthetic resin, and the conductive member 8 is electrically independent and made of metal having a certain volume and area. In the example, the conductive member 8 is formed by screwing a plate-shaped wiring mounting plate 8a mounted on the tip of the positive high-voltage terminal 6c to the frame body 1 of synthetic resin.

Reference numeral 20 denotes a power supply transformer which constitutes a power supply circuit of the control device 19. Since the power supply transformer 20 is installed in the frame body 1 completely isolated from the air flow path 2 and is in an insulating state, it is a conductive member. When the power transformer 20 is installed near the air flow path 2, the positive high voltage terminal 6c of the high voltage transformer 6 may be connected to the outer surface of the power transformer 20.

When the negative ion generation mode is selected by the operation panel 16, a high DC voltage is applied between the electrode 7 and the conductive member 8 in the air flow path 2, and the conductive member 8 is insulated and becomes positive. When the walls of the charged air flow path 2 face the electrode 7, electrons ejected from the electrode 7 head toward the frame 1 and hit neutral air molecules on the way,
The air molecules are negatively ionized.

At this time, a weak current is applied to both high voltage electrodes 6b.
6c, but the conductive member 8 is insulated from the contacting member and is isolated from the electrode 7 to which the negative high voltage terminal 6b in the air flow path 2 of the frame 1 is connected.
No discharge phenomenon occurs between the high voltage terminals 6b and 6c, and the weak current flowing does not cause loss due to discharge and is used for generation of negative ions. Therefore, in such a structure, when the current flowing between the high voltage electrodes 6b and 6c is increased, the amount of negative ions generated is increased. Therefore, the positive high voltage terminal 6c is connected to the plate electrode in the air flow path 2. A lot more negative ions are generated than when.

By the way, it is considered that negative ions are attached to water droplets in the air, and the amount of negative ions generated is related to indoor humidity. Even with the above structure, the amount of negative ions generated decreases if the indoor humidity is out of a certain range.

In particular, when the indoor humidity is low, not only the amount of negative ions generated decreases, but also the decrease in the number of water molecules in the air makes it difficult for the charges of the frame 1 to be released into the air, and the frame 1 is easily charged. As a result, the frame body 1 is negatively charged by the adsorption and friction of the generated negative ions,
It has been found that the electrode 7 and the air flow path 2 may be close to the same potential and the discharge itself may be weakened, and the amount of negative ions generated may be drastically reduced or may not be generated.

According to the present invention, the frame 1 is provided even when the indoor humidity is low.
Is to prevent the electrification of the air and to keep the amount of negative ions generated. 9 is a humidifying chamber provided adjacent to the outside of the air flow path 2 in the frame 1, and 10 is a lower portion of the humidifying chamber 9. The humidifying water tank 11 provided is a humidifying means for vaporizing the water stored in the humidifying water tank 10. The humidifying chamber 9 is formed so as to surround the entire circumference of the wall of the air flow passage 2, and the high pressure transformer 6 and the control device. It is separated from the storage part of the electric component in which 19 is arranged by the partition wall 1a.

Reference numeral 21 denotes a water tank which can be attached and detached from the upper portion of the frame body 1, reference numeral 22 denotes a detachable water supply lid of the water tank 21, and the water supply lid 22 is provided with an opening / closing valve 22a. Reference numeral 23 denotes a saucer having a protrusion 23a for pushing and opening the on-off valve 22a,
The saucer 23 is formed continuously with the humidifying water tank 10. When the water tank 21 is attached to the saucer 23 with the water supply lid 22 facing downward, the projection 23a pushes the on-off valve 22a to open the water in the water tank 21. Flowing through the humidifying water tank 1
Sent to 0. The water vaporized and consumed in the humidifying water tank 10 is constantly replenished from the water tank 21, so that a constant water surface can be maintained.

The water vapor generated by the humidifying means 11 fills the humidifying chamber 9 and adheres to the outer wall of the air passage 2 as water droplets, and the electric charge adsorbed on the wall of the air passage 2 is caused by the action of water molecules. Since it is released into the humidified air in the humidifying chamber 9, charging does not occur even if the indoor humidity is low, and the negative ion generation amount may slightly decrease due to the decrease in humidity, but the negative ion generation amount may be reduced. It no longer suddenly decreases or disappears, and it is fully functional as a negative ion generator. Further, at this time, the humidified air in the humidifying chamber 9 does not go into the air passage 2, so that the moisture in the humidifying chamber 9 does not combine with the negative ions in the air passage 2.

As a concrete example, 11a is a vaporization filter which constitutes the humidifying means 11, and the vaporization filter 11
a is for absorbing and vaporizing the water stored in the humidifying water tank 10, the humidified air is not used for the generation of negative ions, and the water vapor in the humidifying chamber 9 is such that the wall of the air passage 2 is not charged. The vaporization filter 11 can be generated.
A sufficient effect can be obtained even by the humidification method by a.

The humidification is required when the humidity is low and the frame 1 is easily charged, but the vaporization filter 11a has a small vaporization amount when the humidity is high, and a large vaporization amount when the humidity is low. Therefore, the humidification can be performed efficiently with a simple structure, and it was possible to realize the structure with excellent energy saving performance without adding an electric circuit.

Further, the dust contained in the air may be positively or negatively charged, and the negative ions emitted from the air outlet 4 may be adsorbed by the dust in the air and disappear, so that the indoor humidity is reduced. When the air is low and dry, the amount of dust in the vicinity of the air outlet 4 increases, so the number of negative ions that disappear immediately after being blown out from the air outlet 4 increases, and the number of negative ions released indoors decreases. It was something I would do.

Reference numeral 9a is an opening provided on the upper surface of the humidifying chamber 9 through which the air flow path 2 penetrates, and the opening 9a is arranged so as to surround the air outlet 4. The humidified air in the humidifying chamber 9 has an opening 9
Since the dust is sent from a to the periphery of the air outlet 4, and the dust that is going toward the air outlet 4 absorbs the moisture in the humidified air around the air outlet 4 and falls, the air outlet 4
It was possible to reduce the amount of dust in the vicinity, reduce the amount of negative ions that were lost by the dust, and increase the amount of negative ions that were emitted indoors.

The negative ions are also reduced when the amount of water contained in the air increases, but in the structure of the present invention, the amount of humidified air sent from the opening 9a is small, so the opening 9a is filled with air. If provided at a position slightly away from the air outlet 4, the negative ions blown out from the air outlet 4 and the humidified air sent from the opening 9a will not be mixed.

In the present invention, the negative ion generator is attached to the air purifier, but in the case of the air purifier, the filter mechanism 13 filters the dust and dirt contained in the air to clean the air. Since it is directed to the air outlet 4, there is no possibility that dust is charged and adheres to the electrode 7 and the wall of the air flow path 2 even when a high DC voltage is applied, and since a clean state can always be maintained, leakage of electricity due to dust does not occur. It can be said that the combination of the air purifier and the negative ion generator is a preferred embodiment because it is possible to suppress the decrease in the amount of negative ions generated.

[0038]

[Effects of the Invention] When there are many negative ions in a room where a person is present, it is said that these negative ions have a function of neutralizing active oxygen in the body, and by this action, a person maintains a healthy state and feels good. It is said that the work of refreshing will be born. For this reason, a product in which the function of increasing negative ions in the air-conditioned room is built into this air conditioner is sold, and an electrode in which the negative high voltage terminal 6b of the high-voltage transformer 6 is arranged in the air flow path 2 is sold. Connect to 7,
By connecting the positive high voltage terminal 6c to the conductive member 8 arranged in the frame 1, a structure for generating a large amount of negative ions is realized.

When the indoor humidity is low and the water content in the air is not small, the air flow passage 2 is likely to be negatively charged due to the adsorption and friction of the generated negative ions, but in the present invention, it is adjacent to the air flow passage 2. Since the humidifying chamber 9 provided as described above is filled with water vapor and the electric charge of the air flow passage 2 can be released into the humidified air of the humidifying chamber 9, the air flow passage 2 is not charged and the humidity Although the amount of negative ions generated may decrease a little due to the decrease, it does not decrease sharply or disappear.

Further, if the humidifying means 11 for generating water vapor in the humidifying chamber 9 is constituted by the vaporization filter 11a, efficient humidification can be performed with a simple structure without adding an electric circuit, and negative ions can be stabilized. The structure that can be generated is realized at low cost.

Furthermore, since the negative ions blown out from the air outlet 4 adhere to the dust contained in the air and disappear,
If the amount of dust near the air outlet 4 increases, the amount of negative ions released into the room will decrease. In the present invention, since the opening 9a is provided on the upper surface of the humidifying chamber 9 through which the air flow path 2 penetrates and the humidified air is sent to the periphery of the air outlet 4, the periphery of the frame 1 goes to the air outlet 4. Since the dust is adsorbed by the moisture of the humidified air and the amount of dust near the air outlet 4 decreases,
The negative ions released into the room could be increased.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an air cleaner showing an embodiment of the present invention.

FIG. 2 is an electric circuit diagram of a main part of a control device for an air cleaner showing an embodiment of the present invention.

[Explanation of symbols]

1 frame 2 Air flow path 3 Air inlet 4 Air outlet 5 Air supply fan 6 High voltage transformer 6a Rectifier circuit 6b Minus high voltage terminal 6c plus high voltage terminal 7 electrodes 8 Conductive member 9 Humidification chamber 9a opening 10 Humidification water tank 11 Humidification means 11a Vaporization filter

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H01T 23/00 H01T 23/00

Claims (3)

[Claims] 1. An air flow path 2 is formed in a frame body 1, and
An air inlet 3 and an air outlet 4 are provided at the end of the air passage 2, and the air passage 2 from the air inlet 3 to the air outlet 4 is provided.
Is provided with an air blower fan 5 for producing an air flow, and a high-voltage transformer 6 composed of a step-up coil is installed in the frame body 1. The output side of the high-voltage transformer 6 is rectified by a rectifier circuit 6a. The high voltage terminals 6b and 6c are provided, and the electrode 7 is arranged in the air flow path 2 near the air outlet 4 and the electrode 7
A conductive member 8 insulated from the contacting member is arranged in the frame body 1 apart from, and the negative high voltage terminal 6b of the high-voltage transformer 6 is connected to the electrode 7, and the conductive member 8 in the frame body 1 is connected.
In the negative ion generator in which the positive high voltage terminal 6c of the high voltage transformer 6 is connected to and a high DC voltage is applied between the electrode 7 and the conductive member 8, the air flow is adjacent to the outside of the air flow path 2. A humidifying chamber 9 surrounding the wall of the passage 2 is provided, a humidifying water tank 10 located under the humidifying chamber 9 for storing water for humidification, and a humidifying means 11 for vaporizing the water in the humidifying water tank 10 are provided. A negative ion generator characterized in that the steam generated by the means 11 is filled in the humidification chamber 9. 2. The humidifying means 11 is a vaporization filter 11a.
2. The negative ion generator according to claim 1, wherein 3. An opening 9a is provided on the upper surface of the humidifying chamber 9 through which the air flow path 2 penetrates, and the humidified air in the humidifying chamber 9 is opened through the opening 9a.
The negative ion generator according to claim 1, wherein the negative ion generator sends the air to the periphery of the air outlet 4.