JP2003074888A - Indoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the indoor unit of an air conditioner which has a minus ion generator capable of preventing the occurrence of ozone caused by abnormal discharge and capable of performing efficient generation of minus ions and being excellent in safety. SOLUTION: This indoor unit is equipped with a container 120 for protection whose surface is subjected to antistatic treatment, a slit 130 which is opened in the direction of the blast of a draft air duct, besides being in a position opposed to the tip of a generator electrode 112, a grounding screw boss part 123 which is provided integrally with the surface of the container 120 for protection in a position spaced apart from the tip extension of the generator electrode 112, at which position arc discharge does not occur, and into the head of which boss part the bottom tip of an earth screw 125 for connecting a grounding wire is inserted from above, and a grounding part E where the bottom tip of the grounding screw 125 is inserted into the grounding screw boss part 123 and the grounding wire is connected to the head.

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, and more particularly to a negative ion generator incorporated inside.

[0002]

2. Description of the Related Art An indoor unit of an air conditioner has a heat exchanger and a blower housed in the unit body, and sucks indoor air into the unit body by the operation of the blower to pass heat through the heat exchanger. Furthermore, it has the function of blowing out indoors via a blower.

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

Such a negative ion generator is composed of an electrode for generating negative ions and a protective container for covering the electrode, and the protective container has an opening for sending the generated negative ions to the air passage. Section is provided. Further, the negative ion generator may be provided at the air outlet.

[0005]

The indoor unit of the air conditioner having the above-mentioned negative ion generator has the following problems. In other words, it is conceivable to ground the protective container to make the potential difference with the electrode part large, but discharge occurs from the ground boss screw used to hold the ground terminal to the protective container, the edge part of the protective container, etc. There may be a case where an abnormal discharge such as a discharge from the battery occurs. In such a case, while the amount of negative ions generated increases, ozone harmful to the human body is generated.

Further, when an operator puts his / her hand into the air outlet for maintenance or the like, if the opening of the negative ion generator is large, the finger may touch the electrode and receive an electric shock. On the contrary, if the opening is narrow, there is a problem that the ions generated in the electrode are not sufficiently distributed in the air passage and the efficiency is lowered.

Therefore, the present invention provides an air conditioner having a negative ion generator which can prevent generation of ozone due to abnormal discharge and can efficiently generate negative ions, and which is also excellent in safety. It is intended to provide an indoor unit.

[0008]

In order to solve the above problems and achieve the object, the indoor unit of the air conditioner of the present invention is constructed as follows.

(1) A heat exchanger and a blower are housed in the unit main body, room air is sucked into the unit main body to exchange heat with the heat exchanger, and blown out into the room from the blower outlet through the blower. In an indoor unit of an air conditioner, attached to an upper surface wall in the vicinity of a blowout port of the blower of the blower, parallel to the blowing direction of the blower, and project in parallel with each other so that the tips thereof face the downstream side of the blower. A plurality of needle-shaped generating electrodes provided, a protective container containing the generating electrodes, the surface of which is subjected to antistatic treatment, a portion facing the tip of the generating electrodes, and the air blown through the air passage. A slit provided along the direction, and integrally provided on the surface of the protective container at a spaced position where arc discharge does not occur, which deviates from the tip extension line on the downstream side of the blowing electrode with respect to the generating electrode, from above. Head A boss into which the lower end of the ground screw is inserted with the ground terminal for connecting the ground wire to the boss, and the lower end of the ground screw is inserted into this boss, and connect the ground wire to the head. It is characterized by having a grounding part formed by.

(2) In the indoor unit of the air conditioner described in (1) above, the boss portion is provided with an opening hole for exposing a part of the ground screw, and the ground screw is provided. Is characterized in that a male screw is not formed at a portion corresponding to the opening hole.

(3) In the indoor unit for an air conditioner described in (1) above, a flange portion extending outward is formed at an edge portion of the slit. Characterize.

(4) The indoor unit of the air conditioner described in (1) above, which is mounted on the upper wall near the blower outlet of the blower and adjacent to the downstream side of the slit in the blowing direction. A guard body is provided, and the guard body is
A plurality of plate-like bodies arranged in parallel at intervals of 3 mm or less and arranged so that a gap is located at least at a position facing the slit, and having a direction orthogonal to the air blowing direction of the air passage of the slit. The opening width is formed to be 3 mm or more.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, an indoor unit of an air conditioner is constructed. The unit main body 1 includes a front panel 2, an upper panel 3, and a rear plate 4 integrally including both side portions, a rear portion, and a bottom portion, and is formed in a horizontally long box shape.

Inside the unit body 1, an indoor heat exchanger 5 formed in a substantially inverted V shape in a side view is arranged. The indoor heat exchanger 5 includes a front heat exchanger portion 5a located on the front side.
And a rear side heat exchanger part 5b located on the back side, and in particular, an auxiliary heat exchanger 5c is arranged along the upper surface of the rear side heat exchanger part 5b, and these have a pipe (not shown). Connected in series.

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

An indoor blower 7 having a cross-flow fan is arranged between the front heat exchanger portion 5a and the rear heat exchanger portion 5b, which are internal positions of the indoor heat exchanger 5. The 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 surface thereof, and an air passage 8 is formed between the lower surface of the front drain pan 6a and its extension.

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

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

An air cleaner 13, which is an air cleaner, is arranged at a position close to the front side upper portion 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 the space space between the front heat exchanger portion 5a and the front panel 2. An electric dust collector is incorporated in the air purifier 13.

Furthermore, the handle portion 13a of the air purifier 13
And the lower front surface and front panel 2 of the front heat exchanger portion 5a
A filter 16 is detachably attached to a space surrounded by and, so that maintenance for removing adhered dust can be performed.

On the other hand, a negative ion generator 100, which is a negative ion generating means, is arranged in the air passage 8.
The negative ion generator 100 is used in the air cleaner 13
The portion of the air passage 8 through which the air passing through passes through the outlet 9 side of the lower surface of the front drain pan 6a, and the outlet 9
It is provided on one side.

2 to 5 show a negative ion generator 1
It is a figure which shows the concrete structure of 00. That is, as shown in FIGS. 2A and 2B, the basic configuration of the negative ion generator 100 is the electrode plate 110 to which a high voltage is applied.
And a negative ion generating electrode 112 which is integrally formed on the side surface of the electrode plate 110 so as to project negative ions from the tip, and a negative ion generating electrode 112, and the generating electrode 11
It comprises a protective container 120 that houses and protects the two.

In order to emit a larger amount of negative ions in the negative ion generator 100, it is necessary to make a large potential difference between the tip of the needle electrode 111 and the periphery of the tip. Therefore, a ground portion E is provided near the tip of the needle-shaped electrode 111 of the protection container 120 as described later, and the protection container 120 is grounded via the ground screw 125 and the ground wire 127, and the tip of the needle-shaped electrode 111 is grounded. The potential difference between is secured.

The protective container 120 is shown in FIGS. 2 (a) and 2 (b).
The upper surface is open, and the flange 121 is integrally provided along the opening edge to form a substantially rectangular box shape, and the entire surface is subjected to a predetermined antistatic treatment. Mitsube 12
The hooking claws 122 are integrally provided on both sides of the air blower 1, so that the hooking claws 122 can be attached / detached to / from the attachment portion in the air passage 8 with one touch.

The grounding portion E is provided at the center of the front side of the protective container 120. That is, at the center of the flange 121, the ground screw boss 123 is integrally provided from the upper surface to the middle of the side wall of the container. Ground screw boss 1
An opening 123a is formed at the center of 23, and a pilot hole 124 described later is exposed. The periphery of the opening 123a is covered with an insulator 123b.

A lower hole 124 is provided so as to extend from the upper end to the lower end of the ground screw boss 123. Female screws are formed only in the upper portion 124a and the lower portion 124c of the lower hole 124, and no female screw is formed in the central portion 124b. From the upper part of this pilot hole 124, the ground screw 125
Is inserted. As shown in FIG. 4, the ground screw 125 has male threads formed only on the upper portion 125a and the lower portion 125c, and has no male thread formed on the central portion 125b corresponding to the opening 123a. That is, the male screw is not exposed from the opening 123a. Further, an insulating portion 123b coated with an insulating material is formed around the opening 123a.

The total length of the ground screw 125 is selected to be shorter than the total length of the ground screw boss portion 123. Therefore, the lower end of the ground screw 125 has a lower end.
3 Does not protrude from the bottom edge. A ground terminal 126 is interposed and fixed between the head of the ground screw 125 and the upper end surface of the protective container 120, and a ground wire 127 is connected to the ground terminal 126.

The protective container 120 has a pair of slits 13
0, 130 are opened. These slits 130 are located on the left and right of the boss 123 of the protective container 120, and are provided over the entire lower surface, a part of the rear surface, and the vicinity of the flange 121 on the front surface, and are parallel to each other. Further, the opening width α of the slit 130 in the direction orthogonal to the blowing direction is at least 3 mm or more. Slits 130,1
At the opening edge portion of the collar 30, a flange portion 13 extending outward is provided.
0a and 130a are formed.

A supporting leg 131 is integrally erected from, for example, the bottom of the protective container 120, and a mounting screw 134 for mounting and fixing the high-voltage circuit connecting terminal 133 to the supporting leg 131 is screwed from the upper end.

A high-voltage lead wire 132 extends from the high-voltage circuit connecting terminal 133, which is the unit main body 1.
Is electrically connected to a high voltage circuit in an electrical component box (not shown) provided on one side of the. Further, the high voltage circuit connecting terminal 133 is extended to the left and right, and the above-mentioned electrode plates 110 are integrally provided at both left and right ends thereof.

Each of the electrode plates 110 has a needle electrode 111.
, The needle electrodes 111 are paired on the left and right,
The tip faces the pair of slits 130. Therefore, two sets of electrode plates 110, 110 and needle electrodes 111, 1
The negative ion generation electrode 112 made of 11 is housed in the protective container 120.

By mounting the protective container 120 accommodating the negative ion generating electrode 112 at a predetermined position of the air outlet 9, the slit 130 of the protective container 120 extends along the air blowing direction, and the pair of needle-shaped electrodes 111 blows air. The direction is parallel to the direction, and the tip end faces the indoor space through the outlet 9 on the downstream side. The electrode plate 110 on which the needle-shaped electrode 111 is provided is located on the upstream side of the needle-shaped electrode 111 in terms of blowing air.

Grounding portion E provided on the protective container 120
Are located apart from the negative ion generating electrode 112. The earth portion E is the negative ion generating electrode 1
12 is a distance at which arc discharge does not occur (for example, −
They are separated by about 5 mm at 5000V). Moreover, the ground portion E is located off the extension line of the tip of the negative ion generating electrode 112, and is provided on the downwind side of the blast.

Further, since the protective container 120 is formed in a curved surface as a whole and has no edge portion, abnormal discharge due to the surface of the protective container 120 and the needle-shaped electrode 111 can be prevented, and proper ion can be prevented. Discharge becomes possible.

As shown in FIGS. 1 and 5, at the end of the upper surface wall of the blower port 9 to which the negative ion generator 100 is attached, at a portion facing the generator 100, a guard portion composed of a plurality of ridges is provided. 200 are provided. The interval β of the guard pieces 201 of the guide portion 200 is less than 3 mm,
In addition, since the opening width α of the slit 130 of the protective container 120 is 3 mm or more, it is possible to sufficiently release negative ions, and at the time of work, a fingertip touches the needle-shaped electrode 111, etc. Or protective container 12
It is possible to prevent foreign matter from entering the 0.

The indoor unit of the air conditioner configured as described above operates as follows. That is, when the operation start button of the remote controller (not shown) is pressed, the refrigeration cycle operation for the indoor heat exchanger 5 and the driving of the indoor blower 7 are started. Indoor air is sucked into the unit body 1 through the front panel (suction grille) 2 of the unit body 1 and the suction ports 12a, 12b, 11 of the top panel 3. In particular, the room air sucked from the front suction port 12a directly passes through the air purifier 13, 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 further, the indoor air blower 7 is used to blow air.
And is blown into the indoor space from the outlet 9. At the same time, a negative ion generator 10 provided at the outlet 9
0 acts and negative ions are emitted and supplied to the indoor space.

Since there is no dust, dust, or water vapor that attenuates negative ions in the clean air that has been heat-exchanged and blown out from the air outlet 9, the negative ions emitted from the generator 100 are not attenuated, It is supplied to the room as it is.

In this way, the indoor air circulates through the above paths, and is guided to the air purifier 13, the indoor heat exchanger 5, and the negative ion generator 100 in the indoor unit to clean the air. Both desired air conditioning and supply of negative ions that have a favorable effect on the human body are efficiently performed.

In the indoor unit of the air conditioner as described above, the following effects can be obtained. That is, the negative ion generator 100 includes the ground screw boss portion 1
23 is provided and the negative ion generating electrode 112 is provided.
Ground screw 1 located at approximately the same height as the needle electrode 111 of
The lower part 125c of 25 will be covered. Therefore, abnormal discharge between the needle electrode 111 and the ground screw 125 can be prevented, and proper ion discharge can be performed.

Further, since the opening hole 123a is provided on the front surface side, the ground is arranged at a predetermined interval in front of the needle electrode 111 of the negative ion generating electrode 112, which promotes the generation of ions in the front. Is possible. Since the male screw is not formed in the central portion 125b of the ground screw 125, abnormal discharge due to the needle electrode 111 can be prevented and proper ion discharge can be performed.

Further, since the insulating portion 123b covered with the insulating material is provided around the opening 123a, abnormal discharge due to the needle electrode 111 can be further prevented, and proper ion discharge can be performed.

Further, since the slits 130, 130 are provided with the brim portions 130a, 130a, it is possible to increase the distance between the needle-shaped electrode 111 and the room, thereby improving safety.

On the other hand, the interval β between the guard pieces 201 of the guide portion 200 is less than 3 mm, and the opening width α of each slit 130, 130 of the protective container 120 in the direction orthogonal to the air blowing direction is 3 mm or more. Therefore, negative ions can be sufficiently released to the outside of the protective container 120, and at the time of work, an electric shock can be caused by touching the needle electrode 111 with a fingertip, or the needle electrode 111 can be broken. Etc. can be prevented.

Further, since the protective container 120 is formed into a curved surface as a whole and has no edge, the edge and the needle electrode 1
It is possible to prevent abnormal discharge due to 11 and enable proper ion discharge.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0047]

According to the present invention, it is possible to prevent ozone from being generated due to abnormal discharge, to efficiently generate negative ions, and to improve safety.

[Brief description of drawings]

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

2A and 2B are views showing a negative ion generator incorporated in the indoor unit, wherein FIG. 2A is a perspective view and FIG.

FIG. 3 is a view showing the same negative ion generator,
(A) is a front view, (b) is a side view, (c) is A in (a).
-A sectional view taken along line A and viewed in the direction of the arrow.

FIG. 4 is an explanatory view showing a relationship between a boss screw and a boss hole in the negative ion generator.

FIG. 5 is an explanatory diagram showing a relationship between the negative ion generator and a guard unit.

[Explanation of symbols]

1 ... Unit body 5 ... Indoor heat exchanger 7 ... Indoor blower 13 ... Air purifier 100 ... Negative ion generator 110 ... Electrode plate 111 ... Needle-shaped electrode 112 ... Generation electrode 120 ... Protective container 123 ... Ground screw boss 125 ... Ground screw 130 ... slit 200 ... Guard E ... Ground part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuru Ishikawa             336 Tatehara, Fuji City, Shizuoka Prefecture Toshiba Carrier             Within the corporation (72) Inventor Hideto Suzuki             336 Tatehara, Fuji City, Shizuoka Prefecture Toshiba Carrier             Engineering Co., Ltd. F-term (reference) 3L051 BC10

Claims (4)

[Claims] 1. An air blower, which houses a heat exchanger and a blower in a unit main body, sucks indoor air into the unit main body to exchange heat with the heat exchanger, and blows out indoors from a blower outlet through the blower. In the indoor unit of the air conditioner, mounted on the upper wall near the outlet of the blower of the blower, parallel to the blowing direction of the blower, and protruding in parallel with each other so that the tips thereof are directed to the downstream side of the blower. A plurality of needle-shaped generating electrodes, a protective container containing the generating electrodes, the surface of which is subjected to antistatic treatment, a portion facing the tip of the generating electrodes, and a blowing direction of the blowing path. And a slit provided along with the above-mentioned generating electrode, which is integrally provided on the surface of the above-mentioned protective container at a position apart from the above-mentioned generating electrode on the downstream side of the blast, where arc discharge does not occur, which deviates from the tip extension line, To the department A boss portion into which the lower end tip portion of the ground screw, in which the ground terminal for connecting the ground wire is interposed, is inserted, and a lower end tip portion of the ground screw is inserted into the boss portion,
An indoor unit for an air conditioner, characterized in that it is provided with a ground portion formed by connecting a ground wire to its head. 2. An opening hole for exposing a part of the ground screw is provided in the boss portion, and a male screw is not formed in a portion of the ground screw corresponding to the opening hole. The indoor unit for an air conditioner according to claim 1, wherein the indoor unit is an air conditioner. 3. The indoor unit of an air conditioner according to claim 1, wherein a flange portion extending outward is formed at an edge portion of the slit. 4. A guard body is attached to an upper wall near the blower outlet of the blower, and a guard body is provided adjacent to a downstream side of the slit in the blowing direction, and the guard bodies are arranged in parallel at intervals of 3 mm or less. ,And,
At least a plurality of plate-shaped members disposed so as to have a gap in a position facing the slit, and the opening width of the slit in a direction orthogonal to the air blowing direction of the air passage is formed to be 3 mm or more. The indoor unit for an air conditioner according to claim 1, wherein: