JP2001074265A - Indoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit efficient air purification and negative ion supplying by a method wherein a heat exchanger, an air purifier and a negative ion generating device are provided while the position of arrangement of respective machines is limited. SOLUTION: An indoor unit is provided with an indoor heat exchanger 5 and an indoor fan 7, which are received in a unit main body 1, to suck indoor air into the unit main body 1 and effect heat exchange with the indoor heat exchanger 5, then, send out the air into a room through the indoor fan 7. In this case, the indoor unit is equipped with an air purifier 13 or an electric dust collector 13A, arranged at the air suction side of the indoor heat exchanger 5 to purify indoor air, sucked into the unit main body 1, by removing impurities, such as dirt, dust, water vapor and the like, from the indoor air, and a negative ion generating device 17, arranged in the outlet air sending passage 8 of the indoor fan to generate negative ion and supply the same into the room.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit in an air conditioner comprising an outdoor unit and an indoor unit.

[0002]

2. Description of the Related Art An indoor unit of an air conditioner accommodates a heat exchanger and a blower in a unit main body, sucks room air into the unit main body by the operation of the blower, and passes heat through the heat exchanger to exchange heat. , And blows out indoors through a blower.

[0003] In addition to such a heat exchange effect on the indoor air, an indoor unit for removing impurities such as dust, dust and water vapor contained in the indoor air in recent years as an added value has been provided.

[0004] That is, very fine dust
Dust is floating and is not harmful to the human body even if it is sucked, but if the resistance is weak, there is no guarantee that the dust will not affect the human body. In addition, water vapor contained in the air adheres to fixtures and walls and causes mold, so that removal of these dusts, dirt and water vapor is an extremely effective condition.

On the other hand, Japanese Unexamined Utility Model Publication No. 62-124421 and Japanese Unexamined Patent Application Publication No. 11-72240 disclose an air conditioner incorporating a negative ion generator. Supply with. It is known that this negative ion activates cell tissues by being absorbed by the human body, promotes the discharge of waste products, and improves metabolism.

[0006]

However, the above-mentioned publication only discloses that the electrode portion of the negative ion generator is disposed near or in the air passage, and details thereof are unknown.

[0007] Simply generating negative ions and supplying them indoors is susceptible to dust, dirt and water vapor contained in the air. Is bad.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a heat exchanger and a blower, as well as an air purifying means and a negative ion generating means. An object of the present invention is to provide an indoor unit of an air conditioner capable of performing efficient air cleaning and negative ion supply by limiting the arrangement position of each means.

[0009]

According to the present invention, a heat exchanger and a blower are housed in a unit main body, and indoor air is sucked into the unit main body. In the indoor unit of the air conditioner, which blows heat into the room through the blower, dust, dust, water vapor and the like are extracted from room air that is disposed on the air suction side of the heat exchanger and is sucked into the unit body. It is characterized by comprising air purifying means for removing impurities and purifying them, and negative ion generating means arranged in the blower air passage of the blower to generate negative ions and supply them to the room.

According to a second aspect, in the indoor unit of the air conditioner according to the first aspect, the air purifying means includes a charging electrode for charging dust contained in the room air to a positive potential, and a positively charged electrode. Equipped with an electric precipitator that adsorbs dust to the dust collection electrode charged to negative potential and collects dust.
The negative ion generating means is a negative ion generating electrode which emits negative ions to the purified air and supplies the negative ions to the room.

According to a third aspect of the present invention, in the indoor unit of the air conditioner according to the first aspect, control is performed such that the air purifying operation by the air purifying means and the negative ion generating operation by the negative ion generating means are performed in conjunction with each other. Means are provided.

According to a fourth aspect, in the indoor unit of the air conditioner according to the first aspect, a heat exchange action by the heat exchanger, an air cleaning action by the air purification means, and a negative ion generation action by the negative ion generation means. Control means for performing the control in an interlocked manner.

According to a fifth aspect, in the indoor unit of the air conditioner according to the first aspect, when the air purifying means falls into an abnormal state, the air purifying means and the negative ion generating means are controlled to be stopped. A control means is provided.

According to a sixth aspect, in the indoor unit of the air conditioner according to the first aspect, the unit main body is provided with a suction grill which can be opened and closed on a suction side of the room air,
A control means is provided for controlling the air purifying means and the negative ion generating means to stop their operations with the suction grille opened.

By adopting the means for solving the above-mentioned problems, the arrangement positions of the air cleaning means and the negative ion generating means are determined, and efficient air cleaning and negative ion supply can be performed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an indoor unit of the air conditioner is configured. The unit body 1
It comprises a front panel 2, an upper panel 3, and a rear plate 4 integrally provided with both sides, a back and a bottom, and is formed in a horizontally long box shape.

Inside the unit body 1, there is disposed an indoor heat exchanger 5 which is formed in a substantially inverted V-shape when viewed from the side. The indoor heat exchanger 5 includes a front heat exchanger section 5a located on the front side.
And a rear heat exchanger section 5b located on the back side. In particular, an auxiliary heat exchanger 5c is arranged along the upper surface of the rear heat exchanger section 5b, and these are connected in series via pipes. Connected.

A front drain pan 6a is arranged below the front heat exchanger section 5a, and a rear drain pan 6b is arranged below the rear heat exchanger section 5b. Before and after these drain pan 6
a, 6b are provided integrally with the rear plate 4.

An indoor blower 7 having a cross flow fan is disposed between the front heat exchanger 5a and the rear heat exchanger 5b, which are inside the indoor heat exchanger 5. Rear plate 4
Is bent from the rear side of the indoor blower 7, which is the lower part of the rear drain pan 6b, to the bottom part, and an air passage 8 is formed between the lower part of the front drain pan 6a and an extended part thereof.

An outlet 9 is provided in the lower part of the front panel 2 which forms the tip of the air passage 8 and along the width direction.
Each of the outlets 9 includes a combination of a plurality of vertical and horizontal louvers, and is provided with a wind direction guide unit 10 that automatically changes a wind direction from the outlet 9.

On the other hand, a frame-shaped crosspiece is fitted into the upper panel 3, and this space is formed as an upper suction port 11. The front panel 2 has a front suction port 12 having a different structure in two stages of an upper side and a lower side.
a and 12b are provided, and have a hinge structure (not shown) along the upper end edge to form a suction grill which can be opened and closed with respect to the unit main body 1. The front panel 2 has an R-shaped cross section so as to have a predetermined gap with the front heat exchanger 5a of the indoor heat exchanger 5.

An air purifier 13 is disposed at a position close to the upper front side of the front heat exchanger section 5a facing the front suction port 12a of the front panel 2. That is, the air purifier 13 is located in a space between the front heat exchanger section 5a and the front panel 2.

The air purifier 13 includes an electric dust collector 13A for removing dust, dust and water vapor in the room, and a high-performance deodorizing filter having a honeycomb activated carbon structure (not shown) for removing odor in the room. Then, they are arranged side by side on the above-mentioned parts.

The electric precipitator 13A will be described in detail. As shown in FIG. 2A, the electric precipitator 13A comprises a positive potential charging electrode (ionizer) 14 and a negative potential dust collecting electrode (collector) 15. I have.

The charging electrode 14 applies a high DC voltage between the discharge electrode 14a and the counter electrode 14b, which is called an ionizing line, to cause corona discharge and ionize dust particles. The dust collecting electrode 15 is formed by laminating sheets 15a each having a conductive electrode on one surface side, alternately giving + and-charges and sucking ionized dust generated by Coulomb force generated between the sheets. Corrugated electrode.

In addition, due to the dust collecting action, there is a certain amount of heat radiation from the electrodes 14 and 15, and the water vapor contained in the air together with the dust evaporates when passing through the electric dust collector 13A. .

As shown in FIG. 1 again, the electric dust collector 1
A handle portion a is integrally provided on the lower side of 3A, and can be freely attached to and detached from the unit body 1 by opening the front panel 2 which is a suction grill on the user side. Maintenance to remove dust and dirt can be performed.

Further, the handle a of the electric dust collector 13A
The filter 16 is detachably mounted in a space surrounded by the lower front surface of the front heat exchanger section 5a and the front panel 2, so that maintenance for removing adhering dust can be performed. ing.

On the other hand, a negative ion generator 17 as negative ion generating means is arranged in the air passage 8. In addition, if it explains, this negative ion generator 17
Is attached to the lower surface of the front drain pan 6a of the air passage 8 through which the air passing through the electric dust collector 13A passes.

As shown in FIG. 3, when the unit main body 1 is viewed from the lower side of the outlet 9, a part of the negative ion generator 17 is provided from one side of the outlet 9 via the wind direction guide 10. appear. In addition, a control device, which is control means to be described later, and an electrical component box 18 for housing various electrical components are attached to the side of the unit body 1.

As shown in FIG. 2A again, the basic structure of the negative ion generator 17 includes an electrode plate 20 to which a high voltage circuit connection terminal is connected and a high voltage is applied, and a side surface of the electrode plate 20. It comprises a negative ion generating electrode 22 composed of a needle electrode 21 projecting integrally and emitting negative ions from the tip, and a protective container 23 (shown by a dashed line) for accommodating and protecting this generating electrode 22. .

The negative ion generator 17, the electric precipitator 13 A described above, and a compressor (not shown) and an indoor blower 7 for performing the heat exchange action of the indoor heat exchanger 5 are all electrically connected to the control device 30. Connected
The control described below is performed.

In order to emit a larger amount of negative ions in the negative ion generator 17,
It is necessary to increase the potential difference between the tip of the needle electrode 21 and the vicinity of the tip. Therefore, a ground terminal 24 is attached to the vicinity of the tip of the needle-shaped electrode 21 of the protection container 23, and the protection container 23 is grounded via the ground wire 25 to secure a potential difference from the tip of the needle-shaped electrode 21.

For example, the negative ion generator 1
When the air blower 7 is disposed in the vicinity of the indoor blower 7 described above, the released negative ions are absorbed by the nose and the casing forming the air blow path 8, and the amount of the air discharged into the indoor space is greatly reduced. For this reason, the generator 17 is arranged at a position near the outlet 9 and radiates through the vertical and horizontal louvers of the wind direction guide unit 10.

The needle-like electrode 2 protruding from the electrode plate 20
1 is arranged with its tip directed from the upstream side to the downstream side of the ventilation path 8, and the ground terminal 24 is attached to the downstream side of the needle electrode 21.

For example, as shown in FIG. 2 (B), when the tip of the needle electrode 21 is reversed and the ground terminal 24 is mounted on the upstream side of the air blow in opposition to this, the radiation from the needle electrode 21 is emitted. This configuration is not adopted because the negative ions are almost completely absorbed by the electrode plate 20 in the air flow and the amount of emission into the indoor space is reduced.

When the operation start button of the remote controller (not shown) is pressed in the indoor unit of the air conditioner configured as described above, the control device 30 operates the refrigeration cycle for the indoor heat exchanger 5 and the operation of the indoor blower 7. Perform operation control.

The room air is supplied to the front panel (suction grill) 2 of the unit main body 1 and the suction ports 12a of the top panel 3,
It is sucked into the unit main body 1 from 12b, 11. In particular, the room air sucked from the front suction port 12a directly passes through the electric dust collector 13A, and the dust, dust, and water vapor contained in the room air are captured and cleaned.

The purified air is guided to the indoor heat exchanger 5 to perform heat exchange, and is further passed through the indoor blower 7 to the air passage 8.
And is blown out from the outlet 9 into the indoor space. In the vicinity of the outlet 9, a negative ion generator 17 is provided.
, Negative ions are emitted and supplied to the indoor space.

Since the heat-exchanged clean air blown out from the outlet 9 has no dust, dust, or water vapor that attenuates the negative ions, the negative ions emitted from the generator 17 are not attenuated. It is supplied to the room as it is.

In this way, the indoor air circulates in the above-mentioned path, and the indoor dust collector 13A
By being guided to the indoor heat exchanger 5 and the negative ion generator 17, air purification, desired air conditioning, and supply of negative ions that have a favorable effect on the human body are both efficiently performed.

In addition, the air purifier 13A disposed on the air suction side of the indoor heat exchanger 5 includes an electric precipitator 13A comprising a positive potential charging electrode 14 and a negative potential dust collecting electrode 15. The negative ion generator 17 was disposed in the downstream air passage 8.

Accordingly, dust and dust in the air passing through the electric dust collector 13A are positively charged by the charging electrode 14, and are surely adsorbed and neutralized by the negatively charged dust collecting electrode 15, and the outlet 9 is discharged. Released into the room via

At this time, even if a small amount of positively charged air remains as active oxygen, it is neutralized by a part of the negative ions emitted from the negative ion generator 17 on the downstream side of the air blower. 1
A high air purifying effect by 3A and a synergistic effect of efficiently generating negative ions can be obtained.

Further, the control device 30 controls the air purifying operation of the air purifier 13 (that is, the electric dust collector 13).
A) and the negative ion generator 1 described above.
7 is controlled so as to perform the negative ion generating action in conjunction with the negative ion generating action.

Negative ions are easily absorbed by dust, dirt and water vapor, and greatly affect the presence thereof. However, during operation of the negative ion generator 17, the operation of the air purifier 13 is always performed simultaneously, so that impurities in the air can be eliminated. Is removed, and the efficiency of negative ion generation can be improved.

The control device 30 controls the heat exchange operation by the indoor heat exchanger 5, the air cleaning operation by the air purifier 13 and the negative ion generation operation by the negative ion generator 17 in an interlocked manner. I do.

It is known that the generation amount of negative ions is greatly affected by the presence of dust, dust and water vapor, and that the lower the humidity of the air, the larger the amount of negative ions generated. Therefore, by further performing the air-conditioning operation to lower the humidity in the air, it is possible to further improve the efficiency of generating negative ions.

Further, the control device 30 controls the air purifier 1
When the abnormality of the electric dust collector 13A, which is 3, is detected,
Control is performed to stop the operations of the electric dust collector 13A and the negative ion generator 17.

Since the amount of generated negative ions is greatly affected by the presence of dust, dust and water vapor, the electric dust collector 13
If A breaks down, the amount of negative ions generated by the negative ion generator 17 is extremely reduced, resulting in useless operation. Therefore, when the abnormality of the electric dust collector 13A is detected and stopped, the negative ion generator 17 is also stopped in conjunction therewith to prevent inefficient operation continuation.

The unit body 1 is used for maintenance and the like.
When the front panel (suction grill) 2 is opened, the control device 30 controls to immediately stop the operation of the electric dust collector 13A and the negative ion generator 17 forcibly.

That is, when the suction grill 2 is opened, the electric dust collector 13A is exposed. Since a high-voltage power supply is sent here, it is necessary to cut off the power supply for safety.
On the other hand, the high voltage power supply is also sent to the negative ion generator 17, but it is arranged in the air passage 8 and
Has nothing to do with the opening and closing of the car. Therefore, although there is no danger of contact with the negative ion generator 17, the energization is cut off when the energization of the electrostatic precipitator 13A is stopped, and the inefficient operation continuation is prevented.

[0053]

As described above, according to the present invention, both the air purifying means and the negative ion generating means are provided, and by limiting the arrangement positions of these means, efficient air cleaning and negative ion supply are achieved. The effect that it can perform is produced.

[Brief description of the drawings]

FIG. 1 is a sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating components housed inside an indoor unit of the air conditioner according to the embodiment and a diagram illustrating an operation of the components, and a diagram illustrating a configuration that is not adopted.

FIG. 3 is a partial perspective view of the indoor unit of the air conditioner according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Unit main body, 5 ... Indoor heat exchanger, 7 ... Indoor blower, 13 ... Air purifier, 17 ... Negative ion generator, 13A ... Electric dust collector, 14 ... Charged electrode, 15 ... Dust collecting electrode, 30 ... Control device 2, Front panel (suction grill).

Claims (6)

[Claims] An indoor unit of an air conditioner in which a heat exchanger and a blower are housed in a unit main body, air is sucked into the unit main body to exchange heat with the heat exchanger, and is blown into the room through the blower. An air purifying means disposed on the air suction side of the heat exchanger for removing impurities such as dust, dirt and water vapor from room air sucked into the unit main body, and blowing air from the blower; An indoor unit for an air conditioner, comprising: a negative ion generating means disposed in a road to generate negative ions and supply the generated negative ions to a room. 2. The air purifying means according to claim 1, wherein said charging means comprises a charging electrode for charging dust and dust contained in the room air to a positive potential, and adsorbs said positively charged dust and dust to said dust collecting electrode charged to a negative potential. The air conditioner according to claim 1, further comprising an electric dust collector for collecting dust, wherein the negative ion generating means is an electrode for generating negative ions that emits negative ions to the purified air and supplies the air indoors. Indoor unit of the machine. 3. The air according to claim 1, further comprising control means for controlling the air purifying action of said air purifying means and the negative ion generating action of said negative ion generating means in conjunction with each other. The indoor unit of the harmonizer. 4. A control means for controlling the heat exchange action by the heat exchanger, the air cleaning action by the air cleaning means, and the negative ion generation action by the negative ion generation means in conjunction with each other. The indoor unit of an air conditioner according to claim 1, wherein: 5. The apparatus according to claim 1, further comprising control means for controlling operation of said air purifying means and said negative ion generating means to be stopped when said air purifying means is in an abnormal state. Indoor unit of air conditioner. 6. The unit main body includes a suction grill which can be opened and closed on the suction side of room air, and controls the air purifying means and the negative ion generating means to stop operating with the suction grill opened. The indoor unit of an air conditioner according to claim 1, further comprising a control unit that performs the control.