JP3163732B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner such as a ceiling-mounted type, and more particularly to an improvement in a structure for suppressing adhesion of dirt to a heat exchanger.

[0002]

2. Description of the Related Art Generally, for example, Japanese Patent Application Laid-Open No. Sho 62-1662
A ceiling-embedded air conditioner as disclosed in Japanese Patent Publication No. 37 is known. As shown in FIGS. 8 and 9, the ceiling-embedded air conditioner is such that a casing (a) having a downward opening is embedded and mounted in a ceiling plate (b), and is mounted in the casing (a). A heat exchanger (c), a turbo fan (d) and the like are housed therein, and a front panel (e) is detachably attached to a lower opening of the casing (a). Then, by driving the turbo fan (d), the room air is sucked into the casing (a) from the central suction port (f) of the front panel (e) and then toward the heat exchanger (c). By flowing heat and exchanging heat with the heat exchanger (c), cold air or the like is blown into the room from the side outlet (g) of the front panel (e).

In this type of air conditioner, although the filter (h) is provided at the suction port (f), the heat exchanger (c) is clogged depending on the use conditions,
The heat exchange efficiency may decrease. In other words, tobacco smoke,
Factors of fine air stains such as sand dust, oil smoke, fiber dust and the like cannot be collected by the filter (h), and the factors of the air stains that could not be collected are fins (i) of the heat exchanger (c). And the clogging of the heat exchanger (c) occurs.

[0004] The state of adhesion of the factor of air contamination will be described. The air flowing toward the heat exchanger (c) by the turbo fan (d) is shown in Figs.
As shown by an arrow A in FIG. 0, since the air is blown obliquely with respect to the extension direction of the fins (i) of the heat exchanger (c), this air flow is caused by the fins (i) and (i). ,... Will change rapidly (see arrow B in FIG. 10). The factor (j) of the air contamination is
It is not possible to cope with this rapid change in the air flow, and it will collide with the end face of the fin (i) from an oblique direction, and adheres to the periphery of the end face of the fin (i) as shown in FIG. Will be deposited. Then, the heat exchanger (c) is clogged by the accumulation of the factor (j) of the air contamination.

When clogging occurs in the heat exchanger (c) in this way, the amount of air passing through the heat exchanger (c) is reduced, and the performance of the air conditioner is reduced.
Due to the turbulence of the passing wind and the local rise of the passing speed, water splashes from the fin (i) into the room may occur,
Furthermore, when air-conditioning wind is blown into a room, there is a problem that an unpleasant odor is emitted.

[0006] In view of this point, it is now practiced to periodically clean the heat exchanger to eliminate clogging of the heat exchanger. In other words, after removing the entire air conditioner from the ceiling and cleaning the heat exchanger, install the air conditioner on the ceiling again, or remove the front panel or turbo fan from the air conditioner and exchange heat inside the casing. After only the vessel is attached, the washing water is sprayed toward the heat exchanger by the washing water nozzle to wash the heat exchanger.

[0007]

However, the cleaning of the heat exchanger as described above has the following disadvantages. First, the former method has a problem that a great deal of labor is required for the work of removing the air conditioner from the ceiling or re-installing the air conditioner on the ceiling.
On the other hand, in the latter method, the cleaning operation is complicated and requires a lot of operation time. Therefore, elimination of clogging of the heat exchanger by washing the heat exchanger as described above has a great problem in practicality.

Therefore, the inventor of the present invention focused on avoiding clogging of the heat exchanger by suppressing the adhesion of the dirt to the heat exchanger, and focused on air contamination that could not be collected by the filter. Means for collecting the factors of the above were discussed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to suppress the adhesion of dirt to fins of a heat exchanger and to easily remove a factor of air dirt that could not be collected by a filter. The aim is to obtain a configuration that can be performed.

[0010]

In order to achieve the above-mentioned object, a means taken by the present invention is to collect a factor of air fouling in a primary space of a heat exchanger and to perform heat exchange. The air introduced into the heat exchanger is rectified to suppress the adhesion of dirt to the fin end surfaces of the heat exchanger. Specifically, as shown in FIG. 1, the means adopted by the first aspect of the present invention is a heat exchanger (3) having a large number of fins (3a) in an air conditioner casing (2). ) And a blower fan (4) disposed in the primary space of the heat exchanger (3) and supplying air to the heat exchanger (3). And Then, in a space between the heat exchanger (3) and the blower fan (4), the heat exchanger (3) is opposed to a position close to the heat exchanger (3) over the entirety of the heat exchanger (3). A dirt collecting member (10) is provided. Then, the heat exchanger (3) is attached to the dirt collecting member (10).
And a plurality of collecting fins (10) that are arranged along the extension direction of the fins (3a) and rectify the air supplied from the blower fan (4) to flow into the heat exchanger (3).
a) and each collecting fin (10a) is
Each one faces the fins (3a) of the heat exchanger (3)
Thus, the distance equal to the fins (3a) of the heat exchanger (3)
It is arranged with.

According to a second aspect of the present invention, in the air conditioner of the first aspect, the dirt collecting member (10) is provided with a plurality of dirt collecting portions (10d), (10).
e) and (10f).
d), (10e), and (10f) can be independently taken out of the air conditioner casing (2).

According to a third aspect of the present invention, in the air conditioner according to the first or second aspect, the surface of the collecting fin (10a) of the dirt collecting member (10) is water-repellent or oil-repellent. The surface treatment is performed so as to have the following.

According to a fourth aspect of the present invention, in the air conditioner according to the first or second aspect, the surface of the collecting fin (10a) of the dirt collecting member (10) is electrostatically treated. It is configured to be formed of a resin material.

[0014]

According to the above construction, the following effects can be obtained in the present invention. First, in the invention according to claim 1,
The indoor air flows into the air conditioner casing (2) as the blower fan (4) is driven . The air that has flowed into the air conditioner casing (2) is sent from the blower fan (4) to the heat exchanger (3), and after heat exchange with the heat exchanger (3), It is blown out into the room. In the space between the heat exchanger (3) and the blower fan (4), a plurality of collecting fins (10a) for rectifying air and flowing into the heat exchanger (3) are provided. Dirt collecting member (1
0) is provided, a factor of air contamination contained in the air flowing into the heat exchanger (3) is collected by the collecting fins (10a), (10a),. That is, the factor of air contamination flowing into the heat exchanger (3) is greatly reduced . In addition, this collection fin (10
a), (10a), ..., the flow of air is rectified along the extension direction of the fins (3a) of the heat exchanger (3). Is prevented from being sprayed obliquely to the end face of the fin (3a) and adhering to the end face to cause clogging of the heat exchanger (3).

According to the second aspect of the present invention, when the dirt collecting member (10) is to be cleaned, the dirt collecting portion (10) is cleaned.
d), (10e) and (10f) are taken out of the air conditioner casing (2) one by one. For this reason, the opening for removing the dirt collecting member (10) is relatively small, so that the dirt collecting member (10) can be easily removed, and the removed dirt collecting part ( 10d),
Since each of (10e) and (10f) is small, it is easy to handle and the washing operation can be easily performed.

According to the third aspect of the present invention, since the surface of the collecting fin (10a) of the dirt collecting member (10) is subjected to a water-repellent or oil-repellent surface treatment, the air dirt is prevented. The dirt collection member (1
When washing 0), for example, just perform a simple water wash,
The factor of air contamination attached to the collecting fin (10a) is separated from the collecting fin (10a).

According to the fourth aspect of the present invention, since the collecting fins (10a) of the dirt collecting member (10) are made of a resin material whose surface is electrostatically treated, the factor of air dirt is reduced. Forcibly adsorbed to the collecting fins (10a).

[0018]

Next, a first embodiment according to the first aspect of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2,
(1) is a ceiling embedded type air conditioner, in which an air conditioner casing (2) penetrates an opening of a ceiling plate (R) and is hung on a concrete slab (not shown) as a ceiling.
The air conditioner casing (2) is formed in a substantially rectangular body and has an opening on the lower side, and is attached to the concrete slab by a hanging metal fitting (not shown). The air conditioner casing (2) contains a heat exchanger (3), a turbo fan (4) as a blower fan, and the like. In this air conditioner casing (2),
Front panel (5) as the lower surface member is detachably attached
Have been.

The front panel (5) has a suction port (5a) at the center and a plurality of outlets (5b), (5) on the side.
b),... are established . The front panel
(5) is attached to the lower surface opening of the air conditioner casing (2) so as to cover the opening of the ceiling plate (R).
A filter (5c) is disposed behind the suction port (5a) in the front panel (5), and causes a factor of air contamination contained in room air sucked into the air conditioner casing (2). Relatively large objects (dust) are collected by the filter (5c).

The heat exchanger (3) is disposed in the air conditioner casing (2), and is attached to the upper plate (2a) of the air conditioner casing (2). And
Below the heat exchanger (3), an internal member (2b) also serving as a drain pan is detachably attached to the air conditioner casing (2). Further, the turbo fan (4) is disposed at a central portion in the air conditioner casing (2),
The air conditioner casing (2) is connected to a motor (4a) mounted on a top plate (2a).

Accordingly, when the turbo fan (4) rotates with the driving of the motor (4a), the room air is drawn into the air conditioner casing (2) from the suction port (5a), and the turbo fan (4) Heat exchanger (3)
In this case, the refrigerant exchanges heat with the refrigerant to be cooled or heated to be conditioned air. Thereafter, the conditioned air is supplied to the outlets (5b) and (5b).
b),... are blown into the room, and air conditioning in the room is performed. In addition, (6) in FIG. 1 is the turbo fan (4).
And (7) in FIG. 2 is a refrigerant pipe (header, branch pipe, etc.) storage section.

Next, a configuration which is a feature of this embodiment will be described. In the air conditioner casing (2) of the air conditioner (1) in this example, a dirt collecting member (10) is disposed. The dirt collecting member (10) is disposed on the outer peripheral side of the turbo fan (4) and on the inner peripheral side of the heat exchanger (3). That is, in the primary space of the heat exchanger (3), the heat exchanger (3) is close to the heat exchanger (3) and
Are arranged so as to face each other.

The structure of the dirt collecting member (10) will be described. The dirt collecting member (10) is composed of a plurality of collecting fins (10a) (10a). This collecting fin (10a) is, as shown in FIG.
The thickness dimension (dimension t1 in FIG. 3) is substantially the same as the thickness dimension of the fin (3a) of the heat exchanger (3),
The length (dimension t2 in FIG. 3) is set smaller than the length of the fin (3a) of the heat exchanger (3). The height of the collecting fin (10a) is the same as the height of the fin (3a) of the heat exchanger (3).

Then, each of the collecting fins (10a),
As shown in FIG. 3, (10a),... Have the same distance as the fins (3a) of the heat exchanger (3) so that they face the fins (3a) of the heat exchanger (3). Frame bodies (10b) which are arranged, each indicated by a virtual line in FIG.
And are integrally configured. To this end, the air blown out toward the heat exchanger (3) by the turbo fan (4) is supplied to each of the collecting fins (10).
a), (10a),... (FIG. 3
Arrow C), and each collection fin (10a), (10
a), after being rectified along the extension direction of the fins (3a) of the heat exchanger (3) (FIG. 3).
(See arrow D in FIG. 3), and is introduced into the heat exchanger (3) (see arrow E in FIG. 3). Further, as shown in FIG. 4, a plurality of (three in this example) U-shaped members are attached to the air conditioner casing (2) to attach the dirt collecting member (10) to the air conditioner casing (2). Mounting bracket (10c),
(10c), dirt collecting member (10) by (10c )
Is suspended from the top plate (2a) of the air conditioner casing (2) .

Next, the operation of the air conditioner (1) configured as described above will be described. First, when the turbo fan (4) is driven, the room air is sucked into the air conditioner casing (2) from the suction port (5a) of the front panel (5), and is sucked from the suction port (5a). At the time of removal, a relatively large one (dust) among the factors of air contamination is collected by the filter (5c). afterwards,
The room air sucked from the suction port (5a) flows out of the turbo fan (4) toward the heat exchanger (3) ,
Collecting fins (10a) of the dirt collecting member (10),
(10a), ... and reach the heat exchanger (3). The air that has reached the heat exchanger (3) is exchanged with the heat exchanger (3) to become cold air or the like by being exchanged with the heat exchanger (3). The air is blown out to perform indoor air conditioning.

The operation characteristic of this embodiment is performed when the room air passes through the dirt collecting member (10) and the heat exchanger (3). That is, the turbo fan (4)
The outflow direction of the air flowing out of the dirt collecting member (10) is, as shown by an arrow C in FIGS. 2 and 3, with respect to the extension direction of the collecting fin (10a) of the dirt collecting member (10). The air flow changes abruptly when passing between the collecting fins (10a), (10a),... (See arrow D in FIG. 3).
The fine air contamination factor (11), which could not be collected by the filter (5c), cannot respond to the rapid change of the air flow, so that the fine air contamination factor (11) may not be in contact with the end face of the collection fin (10a). As a result, they collide in an oblique direction, adhere to the periphery of the end face of the collecting fin (10a) and accumulate in an oblique direction as shown in FIG. Thereby, the filter (5)
Factors of fine air contamination that could not be collected in c) (1)
In 1), most of the factors of air contamination that have conventionally adhered to the heat exchanger fins are caused by the collection fins (10a),
(10a),... Also,
The flow of air passing between the collecting fins (10a), (10a),... Is rectified along the extension direction of the fins (3a) of the heat exchanger (3) as shown by the arrow E in FIG. As a result, air is blown obliquely to the extension direction of the fins (3a) of the heat exchanger (3) as in the conventional case, and the air contamination factor (11) is removed from the fins (3a). )
To prevent the heat exchanger (3) from being clogged by adhering to the end face and accumulating in an oblique direction.

As described above, according to the configuration of this embodiment, a large number of collecting fins (10) are provided in the primary space of the heat exchanger (3).
a), (10a),... a dirt collecting member (1
0), and each collecting fin (10a), (10a),.
The fine fins (11), which could not be collected by the filter (5c), were collected by the filter (5c), and the collecting fins (10a), (10a),. By rectifying the flow of incoming air,
Since the air is prevented from being blown obliquely to the extension direction of the fins (3a) of the heat exchanger (3), the adhesion of dirt to the fins (3a) of the heat exchanger (3) is reduced. It can greatly suppress the heat exchanger (3) and prevent the heat exchanger (3) from being clogged, thereby improving the performance of the air conditioner, preventing water from splashing from the fins (3a), and preventing generation of an unpleasant odor in the room. be able to. In addition, the filter (5
Factors of fine air contamination that could not be collected in c) (1)
1) adheres to the dirt collecting member (10), and by removing the dirt collecting member (10) from the air conditioner casing (2) , the dirt collecting member (10) can be cleaned.
As before, remove the entire air conditioner from the ceiling,
It is necessary to perform work such as cleaning the heat exchanger (3) while leaving only the heat exchanger (3) in the air conditioner casing (2).
And workability can be greatly improved.

Second Embodiment Next, a second embodiment according to the second aspect of the present invention will be described. This example is a modification of the dirt collecting member (10), and the other configuration is the same as that of the first embodiment described above. Therefore, only the dirt collecting member (10) will be described.

As shown in FIG. 5, dirt collecting member of the present example (10) is divided into three soils collecting portion (10d), (1
0e) and (10f), and are attached to the upper surface plate (2a) of the air conditioner casing (2) such that their respective end faces abut each other. That is, at the abutting portion of each of the dirt collecting units (10d), (10e), and (10f), as shown in FIG.
d), (10e), both frames (10b) of (10f),
A mounting bracket ( 10g ) having an L-shaped cross section is screwed over both of (10b), and the mounting bracket ( 1
0g ) is the upper surface plate (2) of the air conditioner casing (2).
a) is attached by bolting . On the other hand, as shown in FIG.
b) is screwed to the same mounting bracket ( 10g ) as described above, and the upper surface of the mounting bracket ( 10g ) is mounted to the upper surface plate (2a) of the air conditioner casing (2) by bolting. Thereby, each dirt collecting part (1)
0d), (10e), and (10f) can be independently taken out of the air conditioner casing (2).

Therefore, according to such a configuration, when removing the dirt collecting member (10) from the air conditioner casing (2), the dirt collecting portions (10d), (10e),
By taking out (10f) one by one, the opening for taking out the dirt collecting member (10) can be made relatively small. For example, the dirt can be obtained only by removing the filter (5c) and the bell mouth (6). Since the collecting member (10) can be taken out from the air conditioner casing (2), the dirt collecting member (10) can be easily taken out, and the dirt collecting part (10d) ), (1
Since each of 0e) and (10f) is small, it is easy to handle, and the workability of the cleaning operation can be improved.

(Third Embodiment) Next, a third embodiment of the present invention will be described. In this example, two modified examples relating to the collecting fin (10a) are shown.

First, a modification according to the third aspect of the present invention will be described. The collection fin (10a) of this modification example
The surface is subjected to a water-repellent or oil-repellent treatment by, for example, applying a water-repellent or oil-repellent paint to the surface. Thereby, the adhesion of the air contamination factor (11) to the collection fin (10a) is reduced, and the dirt collection member (10) to which the air contamination factor (11) has adhered is cleaned. For example, only by performing simple washing with water, the factor (11) of air dirt attached to the collecting fin (10a) is detached from the collecting fin (10a), thereby simplifying and shortening the cleaning operation. Can be planned.

Next, a modification according to the fourth aspect of the present invention will be described. The collection fin (10a) of this modification example
It is made of a flat plate made of a resin material, and its surface is subjected to, for example, negative electrostatic treatment. In general, the air pollution factor (11) is positively charged, and therefore, during operation of the air conditioner (1),
The fine air contamination factor (11) that could not be collected by the filter (5c) is forcibly adsorbed to the collection fin (10a), and thus the fin (3a) of the heat exchanger (3) is removed. ) Can be almost eliminated.

In each of the embodiments described above, the air conditioner (1) embedded in the ceiling is described. However, the present invention is not limited to this, and various types of air conditioner such as a suspended type air conditioner can be used. It can be used in air conditioners. Also,
In each of the above-described embodiments, the collecting fins (10a), (10
a) are arranged at regular intervals with the fins (3a) of the heat exchanger (3). However, the present invention is not limited to this, and the collecting fins (10a), (10a), Are arranged at intervals of an integral multiple of the arrangement interval of the fins (3a) of the heat exchanger (3), for example, so as to face every other fin (3a) of the heat exchanger (3). It may be arranged.

[0035]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, in the space between the heat exchanger (3) and the blower fan (4), the heat exchanger (3) is located at a position close to the heat exchanger (3). And a dirt collecting member (10) disposed to face the entirety of the dirt collecting member.
0), the heat exchanger (3) is arranged along the extension direction of the fins (3a) of the heat exchanger (3), rectifies the air supplied from the blower fan (4), and rectifies the air. As a configuration in which a plurality of collecting fins (10a) are provided to flow into the heat exchanger (3), a factor of air contamination contained in air flowing into the heat exchanger (3) is removed by the collecting fin (10a). ,
(10a), ... and the air flow passing between the collecting fins (10a), (10a), ... is taken along the extension direction of the fin (3a) of the heat exchanger (3). Because of the rectification, as in the prior art, a factor of air contamination is sprayed obliquely to the end face of the fin (3a) of the heat exchanger (3) and adheres to the end face to adhere to the heat exchanger. (3) that clogging is avoided,
It is possible to improve the performance of the air conditioner, prevent splashing of water from the fins (3a), and prevent generation of an odor in the room. In addition, the factor of air dirt is attached to the dirt collecting member (10), and the dirt collecting member (10)
By removing the air conditioner from the air conditioner casing, it is possible to clean the air conditioner. Therefore, the entire air conditioner can be removed from the ceiling or only the heat exchanger (3) can be removed from the air conditioner casing (2). Therefore, there is no need to perform an operation of cleaning the heat exchanger (3), and the workability can be greatly improved.

According to the second aspect of the present invention, the dirt collecting member (10) is provided with a plurality of dirt collecting portions (10d), (10d).
e) and (10f).
Since d), (10e), and (10f) can be independently taken out of the air conditioner casing (2), the opening for taking out the dirt collecting member (10) is relatively small. It is small and easy to take out the dirt collecting member (10), and each of the dirt collecting parts (10d), (10e), and (10f) taken out is small and easy to handle. Thus, the workability of the cleaning operation can be improved.

According to the third aspect of the present invention, since the surface of the collecting fin (10a) of the dirt collecting member (10) is subjected to a water-repellent or oil-repellent surface treatment, When cleaning the dirt collecting member (10) to which the factor of air dirt is attached, for example, simple washing with water is performed, and the factor of air dirt attached to the collecting fin (10a) is removed. ), The washing operation can be simplified and shortened.

According to the fourth aspect of the present invention, since the collecting fins (10a) of the dirt collecting member (10) are formed of a resin material whose surface is electrostatically treated, air contamination can be prevented. Is forcibly adsorbed on the collecting fin (10a), and the fin (3) of the heat exchanger (3) is
Adhesion of dirt to a) can be almost eliminated.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an air conditioner according to a first embodiment.

FIG. 2 is a bottom view showing the inside of the air conditioner.

FIG. 3 is a diagram showing an air flow around a dirt collecting member.

FIG. 4 is a perspective view showing an operation of assembling a dirt collecting member to an air conditioner casing.

FIG. 5 is a diagram corresponding to FIG. 2 in a second embodiment.

FIG. 6 is a diagram showing an attached state at a butted portion of a dirt collecting portion.

FIG. 7 is a diagram showing an attached state of a non-butting portion of the dirt collecting unit.

FIG. 8 is a diagram corresponding to FIG. 1 in a conventional air conditioner.

FIG. 9 is a diagram corresponding to FIG. 2 in a conventional air conditioner.

FIG. 10 is a diagram corresponding to FIG. 3 in a conventional air conditioner.

[Explanation of symbols]

 (1) Air conditioner (2) Air conditioner casing (3) Heat exchanger (3a) Fin (4) Turbo fan (blower fan) (10) Dirt collecting member (10a) Collection fin (10d), ( 10e), (10f) dirt collecting part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 F24F 1/00 401

Claims (4)

(57) [Claims] 1. A heat exchanger (3) comprising a plurality of fins (3a) in an air conditioner casing (2), and said heat exchanger (3) is disposed in a primary space of the heat exchanger (3). An air conditioner in which a blower fan (4) for feeding air toward the heat exchanger (3) is housed, wherein a space between the heat exchanger (3) and the blower fan (4) is provided. At a position close to the heat exchanger (3), there is provided a dirt collecting member (10) disposed so as to face the entire heat exchanger (3). The member (10) is disposed along the direction in which the fins (3a) of the heat exchanger (3) extend, and rectifies the air supplied from the blower fan (4) to rectify the air. (3) large number of collecting fins to flow into the (10a) are provided, each collecting fins (10a), respectively said Exchanger (3)
Heat exchanger (3) so as to face the fin (3a) of the heat exchanger.
An air conditioner, wherein the air conditioners are arranged at equal intervals to the fins (3a) . 2. The air conditioner according to claim 1, wherein
The dirt collecting member (10) includes a plurality of dirt collecting units (10).
d), (10e) and (10f), and each of the dirt collecting sections (10d), (10e) and (10f) can be independently taken out of the air conditioner casing (2). An air conditioner characterized by the above-mentioned. 3. The air-conditioning apparatus according to claim 1, wherein the collecting fins (10a) of the dirt collecting member (10).
Is an air conditioner characterized by being subjected to a surface treatment having a water-repellent or oil-repellent surface. 4. The air-conditioning apparatus according to claim 1, wherein the collecting fin (10a) of the dirt collecting member (10).
Is an air conditioner whose surface is formed of a resin material subjected to electrostatic treatment.