JP5894816B2 - Built-in air conditioner - Google Patents

Description

  The embodiment of the present invention relates to a built-in type air conditioner that is installed on the back of a ceiling of a building, sucks air, exchanges heat, and blows out into a room through a blowout duct.

  Built-in type air conditioners (ceiling-embedded air conditioners) installed behind the ceiling of buildings are often used. An indoor heat exchanger and a blower are accommodated in the unit main body, a suction port is provided on one side, and an outlet duct is connected to the other side. The blower is driven, and air is sucked from the suction port to exchange heat with the indoor heat exchanger, and blown out into the room through the blowout duct.

  In such a unit main body, for example, as shown in [Patent Document 1], the blowing duct is connected to one side portion of the unit main body (main body casing). On the other hand, the unit main body is formed in advance so that the suction port may select either the lower surface portion or the back surface portion of the other side portion of the main body.

Japanese Patent No. 3365135

  Not only [Patent Document 1] but a built-in type air conditioner having a conventional structure attaches an air filter to a selected suction port on the lower surface or the rear surface, and captures and filters dust from the air sucked into the unit body. To do. Specifically, the air filter is detachably attached to the peripheral portion of the suction port with a set screw or the like, and the assembly is completed.

  However, maintenance work is required for long-term use. In particular, since the trapped dust is usually thick and clogged in the air filter, it must be removed to remove the attached dust.

  However, the inspection opening provided on the ceiling decorative board is not necessarily provided directly opposite to the lower portion of the air filter, and is often misaligned to some extent. In order for an operator to get out of the inspection port and remove and install the air filter directly attached to the unit body, an unreasonable posture is forced and workability is extremely poor.

  Under such circumstances, a built-in type air conditioner that improves the maintenance workability for the air filter that covers the suction port provided in the lower surface portion or the rear surface portion of the unit main body has been desired.

As for the built-in type air conditioner of this embodiment, a unit main body is installed in the ceiling back of a building, and accommodates an indoor heat exchanger and an air blower inside. A suction port is provided in the lower surface or the rear surface of the unit main body, and air is sucked into the unit main body through the suction port by driving the blower, and is guided to the indoor heat exchanger.
A pair of support rails are detachably attached to the sides facing each other at the peripheral edge of the suction port.
A hooking claw portion constituted by a first hooking claw that is hooked to the end of the peripheral edge of the suction port and a second hooking claw that is inserted into a hooking hole provided in the peripheral edge of the suction port is supported. A plurality of rails are provided at predetermined intervals.
The air filter is removably fitted into the pair of support rails from the side of the unit main body, and captures dust from the air sucked into the unit main body through the suction port.

The side view of the built-in type air conditioner based on 1st Embodiment. The external appearance perspective view which looked up the built-in type air conditioner based on the embodiment from the downward direction. The side view of the built-in type air conditioner based on 2nd Embodiment. The external appearance perspective view which looked up the built-in type air conditioner based on the embodiment from the downward direction. The perspective view which decomposed | disassembled some built-in type air conditioners for demonstrating schematically the attachment structure of the air filter based on the embodiment. The partial longitudinal cross-sectional view of the built-in type air conditioner for demonstrating schematically the attachment structure of the air filter based on the embodiment. The figure which expanded a part of FIG. 6 based on the embodiment. The figure which shows the back surface of the built-in type air conditioner based on 3rd Embodiment. The partial cross-sectional top view of the built-in type air conditioner based on the embodiment, and the figure which expanded the part. The external appearance perspective view of the air filter based on 4th Embodiment. The partial top view of the built-in type air conditioner based on the embodiment. The partial longitudinal cross-sectional view of the built-in type air conditioner based on the embodiment, and the figure which expanded the part.

Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 is a side view of the built-in type air conditioner AC according to the first embodiment. FIG. 2 is an external perspective view of the built-in type air conditioner AC according to the embodiment as viewed from below.

The built-in type air conditioner AC is installed in the ceiling U of the building S having a relatively large indoor (air-conditioned room) R area.
Specifically, a suspension fitting 2 protrudes from the side of the unit main body 1 </ b> A, and a suspension bolt F suspended from the ceiling T of the building S is inserted into a hole provided in the suspension fitting 2. Further, a nut is screwed into the suspension bolt F, and the unit main body 1A is suspended along with the suspension fitting 2.

  The unit main body 1A has a thin rectangular box shape in which the height dimension is shorter than the dimension in the width direction (front and back direction on the paper surface) and the dimension in the depth direction (left and right direction on the paper surface). The lower part from the ceiling decorative board K is a room R which is a space part in which heat is exchanged by the built-in type air conditioner AC.

The blowout duct 3 is connected to the front part a of the unit main body 1A. This blowout duct 3 extends from the unit main body 1A between the ceiling decorative plate K, which is the ceiling back U of the building S, and the ceiling T, and is connected to a blowout grill (not shown) provided at a predetermined position of the ceiling decorative plate K. Is done.
An air filter 4 is attached to the lower surface portion b of the unit main body 1A. The air filter 4 covers a suction port 5A provided in the unit main body 1A as will be described later, and is detachable from the suction port 5A.

Further, the suction port 5B is also provided in the back surface portion c of the unit main body 1A, but is closed by the wind shielding plate 6 here. That is, the unit body 1A is provided with suction ports 5A and 5B in the lower surface portion b and the back surface portion c in advance, and either one of the suction ports 5 or 5B is selected according to the circumstances of the installation site. .
An indoor heat exchanger and a blower (not shown) are accommodated in the unit main body 1A. In particular, the indoor heat exchanger uses a refrigerant pipe (gas pipe) connected to the refrigerant pipe connection port 7a and a refrigerant pipe (liquid pipe) connected to the refrigerant pipe connection port 7b shown in FIG. Connected to the machine. Further, an electrical component box 9 is accommodated in the unit main body 1A as shown in FIG.

A suction guide grill G is provided at a portion of the ceiling decorative plate K facing the air filter 4 attached to the unit main body 1.
Note that an inspection port (not shown) is provided in a part of the ceiling decorative board K, and is closed by a closing decorative board that can be opened and closed. The position of the inspection port is often provided in the vicinity of the electrical component box 9 having a high maintenance frequency.

The built-in type air conditioner AC configured as described above circulates refrigerant from the outdoor unit to the indoor heat exchanger by driving the compressor accommodated in the outdoor unit. Evaporate or condense.
On the other hand, the room R air is guided into the unit main body 1 </ b> A through the suction guide grill G through the suction port 5 covered with the air filter 4. And it distribute | circulates an indoor heat exchanger and heat-exchanges with the refrigerant | coolant which circulates inside.

The air sucked into the unit main body 1A is changed into cold air or warm air by the action of the indoor heat exchanger. These cold air or warm air is blown out to the blowout duct 3 and further led into the room R from the blowout grill. Accordingly, the room R performs a cooling action or a heating action.
A pipe connection port 8a extending from a drain pump (not shown) and a drain discharge port 8b extending from a drain pan (not shown) are provided on the same side surface as the refrigerant pipe connection ports 7a and 7b. .

FIG. 3 is a side view of the built-in type air conditioner AC according to the second embodiment. FIG. 4 is an external perspective view of the built-in type air conditioner AC according to the embodiment as viewed from below.
The unit main body 1B constituting the built-in type air conditioner AC has a rectangular box shape designed to have the same height direction dimensions, width direction dimensions, and depth direction dimensions as those described in the first embodiment. There is no change in being suspended from the ceiling U via the suspension bolt F and the blowout duct 3 being connected to the one side portion a in the left-right width direction.

  Similarly, a pair of refrigerant pipe connection ports 7a and 7b, a drain pipe connection port 8a, and a drain discharge port 8b are provided on one side d of the unit main body 1B. Showing. That is, the electrical component box 9 is attached so that necessary maintenance can be performed.

  A suction port 5B is provided in the other side of the unit body 1 opposite to the connection part of the blowout duct 3, that is, the back surface c, and this is covered by an air filter 4 which is detachably attached by means described later. In the first embodiment, the suction port 5A of the lower surface portion b to which the air filter 4 is attached is removed by the air filter 4 and is closed by the wind shielding plate 6 instead.

  Note that an inspection port (not shown) is provided in a part of the ceiling decorative board K, and is closed by a closing decorative board that can be opened and closed. The position of the inspection port is often provided in the vicinity of the electrical component box 9 having a high maintenance frequency.

Since the mounting position of the air filter 4 is different, the flow of air flowing through the inside of the unit body 1B becomes linear. That is, the suction port 5B covered with the air filter 4 is provided in the back surface part c of the unit main body 1B, and the blowing duct 3 is connected to one side part a of the unit main body 1B.
In terms of operation, the cooling or heating operation of the room R is performed without changing from the first embodiment.

Next, the mounting structure of the air filter 4 will be described in detail.
FIG. 5 is an exploded perspective view of a part of the built-in type air conditioner AC for explaining the mounting structure of the air filter 4 according to the second embodiment. FIG. 6 is a partial longitudinal sectional view of the built-in type air conditioner AC according to the embodiment. FIG. 7 is an enlarged view of part A and part B of FIG. 6 according to the embodiment.

  The back part c of the unit main body 1B is opened all over and forms a rectangular suction port 5B. The blower 10 described above is arranged inside the unit main body 1B facing the suction port 5B. The blower 10 includes a biaxial drive motor and a pair of sirocco fans which are surrounded by a casing and suck air from the axial direction and blown out from a blowing outlet body which is a peripheral surface.

  The suction port 5B is formed by bending each side portion along the periphery of the opening, and the upper side portion 50a and the lower side portion 50b are provided with hooking holes 11 at predetermined intervals. A support rail 12 including an upper side support rail 12a and a lower side support rail 12b, which will be described later, is detachably attached to the upper side portion 50a and the lower side portion 50b of the suction port 5B.

  In other words, the hooking claw portions 13 are provided on the support rail 12 with a predetermined interval therebetween. Each of the hooking claws 13 has a first hooking claw 13a that is bent inward from the edge of the support rail 12, and the edge is separated in the vicinity of the first hooking claw 13a. And a second hooking claw 13b that is bent inward from the portion.

  Further, the support rail 12 is provided with a rail portion 14 along the longitudinal direction. A rail portion 14 having an inverted U-shaped cross section is formed on the upper side support rail 12a attached to the upper side portion of the suction port 5B, and a U-shaped cross section is formed on the lower side support rail 12b attached to the lower side portion of the suction port 5B. A rail-shaped portion 14 is formed.

  The first hooking claw 13a provided on the upper side support rail 12a is hooked to the edge of the upper side part 50a forming the suction port 5B, and the second hooking claw 13b is attached to the upper side part 50a. It inserts in the provided hook hole 11.

  The upper side support rail 12a is hooked to the upper side portion 50a of the suction port 5B by a first hooking claw 13a and a second hooking claw 13b having a height difference. Moreover, since a plurality of the hooking claws 13 including the first and second hooking claws 13a and 13b are provided on the upper side support rail 12a with a predetermined interval, the hooking part 5B is surely connected to the upper side 50a of the suction port 5B. Mounted.

In addition, when attaching the lower side support rail 12b to the lower side portion 50b of the suction port 5B, similarly to the upper side support rail 12a, the first hooking claw 13a provided on the lower side support rail 12b is connected to the suction port 5B. While hooking on the edge of the lower side part 50b to be formed, the second hooking claw 13b is inserted into the hooking hole 11 provided in the lower side part 50b.
A pair of support rails 12 are detachably attached along the upper side portion 50a and the lower side portion 50b of the suction port 5B formed in a rectangular shape.

  On the other hand, the air filter 4 includes a filter frame 40 that forms a peripheral edge portion, and a filter portion 41 that is provided in the entire interior of the filter frame 40. The filter frame 40 is formed of, for example, a synthetic resin rigid body having an L-shaped cross section. The filter unit 41 covers the suction port 5B and captures dust contained in the suction air. It is formed in a bellows shape, increasing the dust capture area.

In the filter frame 40 in the air filter 4, the vertical piece 400 that forms the upper side filter frame 40 a and the lower side filter frame 40 b is inserted into the rail portion 14 of the support rail 12.
In other words, the vertical piece 400 of the upper and lower side filter frames 40a and 40b in the air filter 4 is attached to the rail part 14 of the pair of upper and lower support rails 12 attached to the upper side part 50a and the lower side part 50b of the suction port 5. Insert at the same time. As shown in FIG. 4, the suction port 5 </ b> B is completed with the two air filters 4, 4 covered.

  The built-in type air conditioner AC is carried into the installation site and is suspended by the suspension bolt F as shown in the figure. Next, the air-conditioning operation can be performed by connecting the blowout duct 3 and the outdoor unit. With operation, the air filter 4 captures dust contained in the intake air. The air filter 4 is likely to be clogged over a long period of use.

  Therefore, regular maintenance work is performed. The ceiling decorative board K is provided with an inspection port and is normally closed by the decorative board. When performing maintenance work, remove the decorative panel and open the inspection port. The operator gets out of the body from the inspection port into the ceiling U and puts his hand on the air filter 4 from the unit main body 1B.

  In most cases, there is no inspection port immediately below the air filter 4, and the position is shifted. If the air filter 4 is screwed to the unit main body 1B as in the prior art, it is extremely difficult to work, but if the air filter 4 is shifted along the support rail 12 as in the present embodiment, It can be easily removed from the unit main body 1B, and it does not take time.

The removed air filter 4 is carried to a designated place, and dust adhering to the filter part 41 is removed here. The cleaned air filter 4 is carried again to the unit main body 1B and fitted into the support rail 12.
Also at this time, the vertical piece 400 of the upper and lower side filter frames 40a and 40b of the air filter 4 may be inserted into the rail portion 14 of the upper and lower support rails 12 at the same time, which is relatively troublesome. Workability is improved.

In the above, as the built-in type air conditioner AC described in the second embodiment, the suction port 5B is provided in the back surface c of the unit main body 1B, and the air filter 4 is supported via the support rail 12. However, the present invention is not limited to this.
As the built-in type air conditioner AC described in the first embodiment, the same structure can be applied to the case where the suction port 5A is provided in the lower surface portion b of the unit main body 1A and covered with the air filter 4.

Next, the handleability of the air filter 4 when the air filter 4 is divided into a plurality of sheets, for example, two sheets, will be described.
FIG. 8 is a view showing a back surface of the built-in air conditioner AC according to the third embodiment. FIG. 9 is a partial cross-sectional plan view of the built-in type air conditioner AC according to the embodiment, and an enlarged view of a part thereof.

The unit body 1B having a large driving capability has an extremely long width direction dimension as compared with the height direction dimension. The suction port 5B provided in the back surface portion c has the same dimensions, and the air filter 4 covering the suction port 5B also has an extremely long dimension in the longitudinal direction.
This situation is the same in the first embodiment, but will be described in detail below by applying the second embodiment.

In the case of the air filter 4 having the above configuration, the handleability after being removed from the unit main body 1B becomes extremely troublesome. Therefore, by dividing the air filter 4 into a plurality of, for example, two in the longitudinal direction, it is possible to facilitate handling after the air filter 4 is detached from the unit main body 1B.
However, if the air filter 4 is simply divided, there is a problem in removing the air filter 4 from the unit main body 1B during maintenance work.

  That is, even if the first divided air filter (hereinafter referred to as “first divided air filter”) 4A is moved along the support rail 12 (in the direction of the arrow indicated by the solid line in FIG. 8) and removed, The remaining divided air filter (hereinafter referred to as “second divided air filter”) 4 </ b> B still remains at the set position of the support rail 12.

  At this time, even if the first divided air filter 4A is located relatively close to the inspection port and can be removed relatively easily, the second divided air filter 4B remaining on the support rail 12 is Since the position is farther than the filter 4A, the worker has to reach far.

  In this state, the worker needs to move the second split air filter 4B along the support rail 12 and remove it from the support rail 12 through the position where the first split air filter 4A is located. The nature is bad. The above is exactly the same in the first embodiment.

  Therefore, a hooking hole (hooking part) 45 is provided in advance in the side part 40c facing the second split air filter 4B in the filter frame 40 constituting the first split air filter 4A, and the second split air filter 4B is A coupling latching claw (coupling latching portion) 46 is provided on the side 40d facing the first divided air filter 4A in the filter frame 40 to be configured.

  First, the second divided air filter 4B is fitted into the support rail 12, and is slid and biased to a predetermined position. Next, the first divided air filter 4A is fitted into the support rail 12 and slid. The first divided air filter 4A is set until it comes into contact with the second divided air filter 4B.

  Therefore, as shown in FIG. 9A, the first divided air filter 4A and the second divided air filter 4B are integrated to form the air filter 4. More specifically, as shown in FIG. 9 (B), the engaging hooks 46 provided in the second divided air filter 4B are engaged with the engaging holes 45 provided in the first divided air filter 4A.

When the entire second divided air filter 4B is fitted into the support rail 12, the tip end portion of the first divided air filter 4A is fitted into the support rail 12, and the engagement hole 45 and the connecting hook 46 are connected. And may be connected to the second divided air filter 4B.
In this state, by moving and energizing only the first divided air filter 4A (in the direction of the arrow indicated by the broken line in FIG. 8), the second divided air filter 4B is caused to follow (in this case, “push in” ") And can move to a predetermined position relative to each other.

As shown in FIGS. 8 and 9, a stopper 50c is provided at the end of the suction portion 5B of the main body 1B so that the second divided air filter 4B does not protrude from the main body 1B.
In any case, the filter frame side surface portion 40c of the first divided air filter 4A and the filter frame side surface portion 40d of the second divided air filter 4B are in close contact with each other in the state where the first divided air filter 4B is set at a predetermined position. There is no gap between the filter 4A and the second divided air filter 4B. Air does not leak and dust contained in air is reliably captured.

  In the maintenance work, when the worker reaches the first divided air filter 4A and moves along the support rail 12 (in the direction of the arrow indicated by the solid line in FIG. 8), the second divided air The filter 4B also follows integrally. When the first divided air filter 4A is detached from the support rail 12, the connecting latching pawl 46 of the second divided air filter 4B is removed from the engagement hole 45 provided here.

  Therefore, only the first divided air filter 4A can be released from the support rail 12. Thereafter, the second divided air filter 4B remaining on the support rail 12 is put on the hand. Since the second divided air filter 4B has moved close to the worker, the second divided air filter 4B can be operated relatively easily and can be removed from the support rail 12.

  The separated divided air filters 4A and 4B are moved to a predetermined site, and the filter unit 41 is clogged and removed. After completion of the work, the second divided air filter 4B is again fitted into the support rail 12 and slidably biased to a predetermined position. Thereafter, the first divided air filter 4A is fitted into the support rail 12 and slidably biased to a predetermined position.

  Again, the engagement hole 45 of the first divided air filter 4A is engaged with the connection latching claw 46 of the second divided air filter 4B. The first divided air filter 4A and the second divided air filter 4B are integrated to capture and filter dust from the air sucked into the suction port 5B. The performance as the air filter 4 is not impaired at all, and the maintenance workability can be facilitated.

For all the divided air filters 4A and 4B, a hooking hole 45 may be provided in one side portion 40c of the air filter frame 40 and a connecting hooking claw 46 may be provided in the other side portion 40d. .
In this case, even if the order of fitting into the support rail 12 is not particularly concerned, it is inevitably caused by fitting and slidingly energizing one of the divided air filters 4A in an upside down state so as to inevitably connect. And the engagement hole 45 face each other and engage with each other. Since the divided air filters 4A and 4B are integrated, the workability can be further improved.

  As the first embodiment described above, the unit main body 1A is provided with the suction port 5A on the lower surface portion b, and even if the inspection port is provided with a misalignment, the side portion facing the suction port 5A is provided. It has been described that workability can be improved by attaching the support rail 12 and making the air filter 4 movable along the support rail 12.

  However, in some cases, the suction guide grill G provided at the ceiling decorative plate K portion facing the air filter 4 covering the suction port 5A is detachable, and the opening after the removal is used as an inspection port. That is, since an inspection port is present immediately below the air filter 4, it is not necessary to move the air filter 4 in this case.

Further, there is a case where the side space of the unit main body 1 has no room and the air filter 4 cannot be moved. Naturally, the inspection port cannot be provided in a position shifted from that of the unit main body 1A, and the inspection port is provided immediately below the air filter 4 covered with the suction port 5A.
The structure in this case will be described as a fourth embodiment.

  FIG. 10 is an external perspective view of the air filter 4 according to the fourth embodiment. FIG. 11 is a partial top view of the built-in air conditioner AC according to the embodiment. FIG. 12 is a partial longitudinal cross-sectional view of the built-in type air conditioner AC according to the embodiment, and an enlarged view of a part thereof.

  In the fourth embodiment, the air filter 4 includes a filter frame 40 having a peripheral portion bent in a substantially L-shaped cross section, and a filter unit 41 stretched over the filter frame 40. A plurality (two each) of claw portions 50 are projected from the upper side portion 40a and the lower side portion 40b of the filter frame 40 with a predetermined interval therebetween.

  In other words, the air filter 4 uses the above-described air filter as it is to reduce the cost. When the filter 4 is fitted into the support rail 12, the front and rear surfaces of the filter 4 are reversed so that the claw portion 50 faces outward as shown in FIG. Does not get in the way.

  On the other hand, as shown in FIGS. 11 and 12, the claw portion 50 of the air filter 4 is inserted into and engaged with the peripheral edge portion 51 of the suction port 5A of the unit main body 1A. The suction port 5A is covered with the air filter 4, and dust can be removed from the air sucked from the suction port 5A.

  When the maintenance port (not shown) is opened during maintenance work, the air filter 4 is positioned in front of the eyes, so that the air filter 4 can be easily removed. After removing the dust adhering to the air filter 4, the work of covering the suction port 5A again can be easily performed.

In this type of structure, not only the suction port 5A is provided in the lower surface portion b of the unit body 1A, but also the suction port 5B is provided in the back surface portion c of the unit body 1 and is covered with the air filter 4. The present invention can also be applied to the structure of the embodiment.
Further, the peripheral portion 51 of the suction port 5A of the unit main body 1A is provided with a hooking hole 11 for detachably attaching the support rail 12 described in the first and second embodiments.

  Thus, at the installation site of the built-in type air conditioner AC, whether the air filter 4 is attached via the support rail 12 or whether the support rail 12 is removed and directly attached to the unit main body 1A depending on the situation. to decide. As described above, any case can be easily applied.

  As mentioned above, although this embodiment was described, the above-mentioned embodiment is shown as an example and does not intend limiting the range of embodiment. The novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  S: Building, U: Ceiling space, 1A, 1B: Unit main body, 5A, 5B ... Suction port, 12: Support rail, 4 ... Air filter, 4A ... First divided air filter, 4B ... Second divided air Filter, 40 ... Filter frame, 41 ... Filter part, 46 ... Connecting hook (hook for connection), 45 ... Hook (hook), 51 ... Hatch groove (hook), 50 ... Nail Department.

Claims (3)

A unit main body that is installed behind the ceiling of the building and accommodates an indoor heat exchanger and a blower inside,
Provided on the lower surface portion or the back surface portion of the unit main body, by driving the blower, the air behind the ceiling is sucked into the unit main body, and the suction port led to the indoor heat exchanger;
A pair of support rails that are detachably attached to opposite sides of the suction port;
A plurality of support rails are provided at predetermined intervals, and are inserted into a first hooking claw that is hooked on an end of the peripheral edge of the suction port and a hooking hole that is provided on the peripheral edge of the suction port. A hooking claw portion composed of two hooking claws;
An air filter that is detachably fitted to the pair of support rails from the side of the unit body, and that captures dust from the air sucked into the unit body through the suction port;
A built-in type air conditioner characterized by comprising: The air filter is divided into a plurality of sheets,
Each of the divided air filters includes a filter frame and a filter unit that captures dust from the air that is stretched between and circulates between the filter frames.
A hooking portion for connection is provided on the side surface portion of the filter frame in one of the divided air filters, and a hooking portion is provided on the other side surface portion of the filter frame in the other divided air filter,
With the plurality of divided air filters fitted into the support rails, the engagement of the filter frame in the other divided air filter is engaged with the connecting latching portion of the filter frame in one of the divided air filters. The built-in type air conditioner according to claim 1, wherein the portion is hooked. The built-in type air conditioner according to any one of claims 1 and 2, wherein the air filter is provided with a detachable claw portion at a peripheral portion of the suction port of the unit main body.

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