JP2013204994A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a built-in type air conditioner that enables a fan motor to be easily attached and detached and improves maintainability.SOLUTION: In a built-in type air conditioner including a blower and a heat exchanger, the blower has a fan motor 17 supported and fixed by a fan motor base 21 and a motor band 31, the fan motor base 21 has a temporary hooking claw 27, and the motor band 31 has a temporary hooked hole 33a in which the temporary hooking claw 27 engages to be freely inserted.

Description

  Embodiments described herein relate generally to a built-in air conditioner.

A so-called built-in type in which the air conditioner body is installed behind the ceiling of the air-conditioned room, and the air exchanged by the heat exchanger housed in the air conditioner body is supplied to the air-conditioned room through the blowout duct There is an air conditioner.
This type of air conditioner includes a blower for sucking air into the main body and supplying the heat-exchanged air to the air-conditioned room.
This blower includes a fan motor that is a so-called two-axis motor with projecting rotary shafts on both sides, a multiblade fan that is attached to both rotary shafts of the fan motor, and a fan casing that houses the multiblade fan. Is used.
This multiblade fan tends to adhere dust to the blades, and it is necessary to perform maintenance periodically. In the case of a built-in type air conditioner, since the main body is installed behind the ceiling, it is not easy to remove the main body from the back of the ceiling for maintenance, and maintenance is usually performed with the main body installed on the back of the ceiling.
To maintain the blower, it is necessary to attach and detach the fan motor from the motor base. At this time, an operator who supports the fan motor so that it does not fall and a fixture for fixing the fan motor to the motor base are attached and detached. It is necessary for at least two of the workers to get out of the body from the inspection port provided on the ceiling near the air conditioner main body, and the workability is extremely poor.
Under such circumstances, a built-in type air conditioner that improves the maintainability for attaching and detaching the fan motor has been desired.

JP-A-2005-164073

  The problem to be solved by the present invention is to provide a built-in type air conditioner in which the fan motor can be easily attached and detached and the maintainability is improved.

  In order to achieve the above object, the built-in type air conditioner of the embodiment includes a blower and a heat exchanger. The blower includes a fan motor fixed by a fan motor base and a motor band, the fan motor base includes a temporary hook, and the motor band includes a temporary hook hole through which the temporary hook is inserted. Prepare.

The side view which shows the installation state of the built-in type air conditioner which concerns on embodiment of this invention Vertical section of the built-in air conditioner External perspective view of the built-in air conditioner looking up from below The perspective view which shows the motor base assembly of the built-in type air conditioner The figure explaining the attachment or detachment process of the fan motor of the built-in type air conditioner The perspective view which expands and shows a part of motor base assembly of the built-in type air conditioner

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the invention will be described with reference to FIGS.
FIG. 1A is a side view showing an installed state of the built-in air conditioner 100 when the air in the ceiling T is sucked from the back surface of the main body 1, and FIG. It is a side view which shows the installation state of the built-in air conditioning apparatus 100 when inhaling the air of the ceiling back T. FIG.

  The main body 1 of the built-in type air conditioner 100 is fixed to the hanging bolts F suspended from the beam material on the ceiling T of the air-conditioned room R with a nut or the like. By doing so, it is installed in the ceiling T.

  An air outlet 12 is provided in the front portion 1 f of the main body 1, and at least one outlet duct 15 is connected to the air outlet 12. The blowout duct 15 communicates with one or more ceiling blowout openings (not shown) provided on the ceiling surface of the air-conditioned room R. That is, the heat exchange air led out from the main body 1 passes through the blowout duct 15 and is blown out from the ceiling blowout opening into the air-conditioned room R so that the air-conditioned room R can be air-conditioned. In addition, when the air-conditioned room R is wide, the ceiling outlets are provided in a distributed manner, and uniform air conditioning in the room is achieved.

FIG. 2 is a cross-sectional view of the built-in type air conditioner shown in FIG.
The main body 1 has a thin rectangular box shape in which the height dimension is shorter than the dimension in the width direction (front and back direction of the paper surface) and the dimension in the depth direction (left and right direction of the paper surface). In the main body 1, a partition plate 4 that partitions the main body 1 into a blower chamber 2 and a heat exchange chamber 3 is provided across the width direction of the main body 1.
In the main body 1, the lower surface portion of the heat exchange chamber 3 is the lower surface plate 1a, the lower surface portion of the blower chamber 2 is the wind shield plate 1e, the upper surface portion is the top plate 1b, the front side surface portion is the side surface plate 1c, The side portions on the side are each composed of a side plate 1d, and each of the plates 1a to 1e is formed by sheet metal processing of a metal thin plate.
The air blowing port 12 described above is provided in the front portion 1 f of the main body 1, and a dust collection filter 13 is attached to the back surface portion of the main body 1 so as to cover the air suction port 11 b.

The blower chamber 2 is provided with an air suction port 11 for sucking the air behind the ceiling T into the main body 1. The air suction port 11 includes an air suction port 11a provided on the lower surface portion and an air suction port 11b provided on the back surface portion. That is, the main body 1 is provided with air suction ports 11a and 11b on the lower surface portion and the rear surface portion in advance, and either one of the air suction ports 11a or 11b is selected according to the circumstances of the installation site, The air suction port 11a or 11b is closed by the shielding plate 1e.
In the case of back surface suction shown in FIG. 1A, the dust collection filter 13 is attached to the air suction port 11b on the back surface, and the air suction port 11a on the bottom surface is blocked by the shielding plate 1e. On the other hand, in the case of the lower surface suction shown in FIG. 1B, the dust collection filter 13 is attached to the air suction port 11a on the lower surface, and the air suction port 11b on the rear surface is blocked with the shielding plate 1e.

FIG. 3 is an external perspective view of the built-in type air conditioner as viewed from below, and shows the inside of the main body 1 with the lower surface plate 1a, the drain pan 7 and the wind shield plate 1e removed.
A blower 5 and an electrical component box 10 are disposed in the blower chamber 2, and a heat exchanger 6, a drain pan 7 (FIG. 2), and a drain pump 8 are disposed in the heat exchange chamber 3.

First, the heat exchange chamber 3 will be described. As shown in FIG. 2, the heat exchanger 6 disposed here has end plates (not shown) arranged on both side end portions thereof, and a plurality of aluminum fins 6a are arranged in parallel with a predetermined gap between the end plates. It is a finned tube type heat exchanger in which a plurality of heat transfer tubes 6b are penetrated through the both end plates and the aluminum fins 6a.
The heat exchanger 6 is placed on the drain pan 7 in a posture in which the vertical direction is inclined obliquely. Thereby, a necessary heat exchange area can be secured while being accommodated in the thin main body 1.
Further, a heat insulating material is provided around the heat exchanger 6 in the heat exchange chamber 3 and on the air outlet 12 side of the heat exchanger 6.

The drain pan 7 receives drain water generated by the heat exchange action of the heat exchanger 6 during the cooling operation and accumulates it in the drain receiving portion 7a. A drain pump 8 (FIG. 3) is provided above the drain receiving portion 7 a, and the drain water accumulated in the drain receiving portion 7 a is drained to the outside of the main body 1 by the drain pump 8.
The lower surface of the drain pan 7 is substantially entirely covered with a lower surface plate 1 a constituting the lower surface portion of the main body 1.

Next, the blower 5 arranged in the blower chamber 2 will be described. As shown in FIG. 3, the blower 5 includes a fan motor 17 that is fixed to a motor base assembly 20 described later. The fan motor 17 is a biaxial motor whose rotating shaft projects from both sides. Each rotating shaft is connected to a fan (so-called multi-blade type fan) 18 that sucks air from the axial direction and blows it out in the circumferential direction as it rotates, and each fan 18 is housed in a fan casing 19. .
Suction ports 19a for sucking air are opened on both side surfaces of the fan casing 19, and blow-off nozzles 19b are formed at the end of the partition plate 4 as shown in FIG. The blowing nozzle 19b protrudes toward the heat exchange chamber 3 through a communication port 21 opened in the partition plate 4. By the blower 5 configured as described above, the wind sucked into the blower chamber 2 is blown to the heat exchange chamber 3 side.

Next, the motor base assembly 20 will be described.
4A is a perspective view in which the motor base assembly 20 is disassembled as viewed from below, and FIG. 4B is a perspective view in which the fan motor 17 is attached to the motor base assembly 20 as viewed from below. FIG. FIGS. 5A to 5D are side views for explaining a process of attaching / detaching the fan motor 17 to / from the motor base assembly 20, and FIGS. 6A to 6C are temporary hooking claws of the motor base 21. FIG. 3 is a perspective view showing a part of the motor base assembly 20 in an enlarged manner in order to show a state where the motor 27 is engaged with the temporary hooking hole 33a of the motor band 31.

  As described above, the motor base assembly 20 includes the motor base 21 that is attached to the blower chamber 2 and supports the fan motor 17, and the motor band 31 that presses and fixes the fan motor 17 to the motor base 21.

As shown in FIGS. 4A and 4B, the motor base 21 is installed between a pair of left and right motor support plate portions 22 and the motor support plate portions 22 so that the motor support plate portions 22 are integrated with each other. It is provided with a connecting plate portion 23 to be connected, and is bent into a substantially U shape.
The distance between the motor support plate portions 22 is formed to be somewhat larger than the axial length of the motor main body 17a constituting the fan motor 17, and the boss portions 17b projecting integrally on both side surfaces of the motor main body 17a. It is formed smaller than the mutual end face dimension.

  A substantially semicircular motor receiving portion 24 is cut out at the lower end edge of each motor support plate portion 22. The radius of curvature of the motor receiving portion 24 is substantially the same as the radius of curvature of the boss portions 17 b on both sides of the fan motor 17. Note that when the fan motor 17 is actually fixedly supported on the motor base assembly 20, a vibration isolating rubber member is attached along the peripheral surface of the boss portion 17b, so that the radius of curvature of the motor receiving portion 24 is the boss portion 17b. The curvature radius is a value considering the thickness of the rubber member for vibration isolation.

  A portion of each motor support plate portion 22 between the motor receiving portion 24 and the connecting plate portion 23 is formed to be inclined, and a fixed portion protruding from the edge of the motor support plate portion 22 is fixed to the inclined portion. The claw 25 is protruded integrally.

  The upper portion of the connecting plate portion 23 extends upward from the upper end edge of the motor support plate portion 22, and the top plate fixing piece 28 is integrally bent from the upper end edge to the outside. The top plate fixing piece 28 is provided with two fixing holes 28a.

  At the lower end edge of the motor support plate portion 22 and on the opposite side of the fixing claw 25 via the motor receiving portion 24, a mounting piece 26 is integrally bent outward and horizontally. Each attachment piece 26 is provided with an attachment hole 26a formed of a screw hole. Temporary hooking claws 27 are integrally projected on the outer edge of the mounting piece 26 in the vicinity of the mounting holes 26a. As shown in FIGS. 6A to 6C, the temporary hooking claw 27 includes a base portion 27 a that protrudes from the mounting piece 26, and a protruding portion 27 b that protrudes on both sides from the distal end portion of the base portion 27 a. It is formed in a T shape in plan view. This temporary hook 27 engages with a temporary hole 33a of a motor band 31 described later.

A partition plate fixing piece 29 is integrally bent at the end of each motor support plate 22 opposite to the connecting plate 23 toward the inside. Each of the partition plate fixing pieces 29 is provided with two fixing hole portions 29a on the upper and lower sides. A partition plate claw portion 29 b is integrally projected at the upper edge of each partition plate fixing piece 29.
In addition, a reinforcing piece 30 is integrally bent at the upper end edge of each motor support plate portion 22 inward.

  As shown in FIG. 4A, the motor band 31 has a strip shape in which the dimension in the width direction is smaller than the dimension in the longitudinal direction. One end portion of the motor band 31 is provided with an attachment portion 32 having substantially the same width as the attachment piece 26 of the motor support plate portion 22. The mounting portion 32 is provided with a mounting hole 32 a at a position facing the mounting hole 26 a of the mounting piece 26. A temporary hanging piece 33 is integrally bent upward at the outer edge of the mounting portion 32, and a positioning piece 34 is formed at the inner edge of the mounting portion 32 facing the temporary hanging piece 33. Are bent together upward.

  The temporary hooking piece 33 of the motor band 31 is provided with a temporary hooking hole 33a through which the aforementioned temporary hooking pawl 27 is detachably hooked. As shown in FIGS. 6A to 6C, the temporary hooking hole 33a includes an insertion portion 33a2 formed to have a width dimension through which the protruding portion 27b of the temporary hooking claw 27 can be inserted, and the insertion portion 33a2. The width dimension gradually decreases from the upper side to the upper side, and the projecting portion 27b of the temporary hooking claw 27 is formed at the upper end portion of the temporary hooking hole 33a so as to have a width dimension that cannot be inserted.

  The motor band 31 is provided continuously with the attachment portion 32 and has a bent portion 35 formed in a semicircular shape and a straight portion 36 formed in an oblique straight shape on the tip side of the bent portion 35. doing. The radius of curvature of the bent portion 35 is substantially the same as the radius of curvature of the boss portion 17b constituting the fan motor 17, and the actual radius of curvature is equal to the radius of curvature of the boss portion 17b. Is a value that takes into account.

  The inclination angle of the straight portion 36 of the motor band 31 is formed substantially the same as the inclination angle of the edge of the motor support plate portion 22 where the fixing claws 25 are provided. A slit 37 is provided at the tip of the straight portion 36. The slit 37 is formed in a width dimension and a length dimension in which the fixing claw 25 of the motor support plate portion 22 is detachably engaged.

Next, attachment of the motor base assembly 20 configured as described above to the main body 1 of the built-in type air conditioner 100 will be described.
When the body 1 is assembled, the work is performed with the body 1 upside down from the actual installation state. That is, the top plate 1b is on the bottom side, and the motor base 21 constituting the motor base assembly 20 is attached to this predetermined portion. Specifically, the top plate fixing piece 28 formed at the upper end of the connecting plate portion 23 is disposed on the top plate 1 b of the main body 1. Then, the partition plate claw portion 29 b at the upper end of the partition plate fixing piece 29 is inserted into a latching hole (not shown) provided in the partition plate 4. At the same time, the partition plate fixing piece 29 is brought into contact with the plate surface of the partition plate 4 to set the position of the motor base 21.

  In this state, the fixing hole 28a of the top plate fixing piece 28 opposes a mounting hole (not shown) provided in the top plate 1b. In addition, since the fixing hole 29a of the partition plate fixing piece 29 faces mounting holes (not shown) provided in the partition plate 4, an attachment is inserted into these holes to be fastened and fixed. Therefore, the motor base 21 is attached and fixed to the top plate 1 b and the partition plate 4 of the main body 1.

  After the motor base 21 is attached to the main body 1, the motor main body 17 a of the fan motor 17 is inserted between the motor support plate portions 22. Inevitably, the boss portions 17b projecting from both side surfaces of the motor main body 17a fit on the motor receiving portions 24 in the respective motor support plate portions 22.

  Next, the slit portion 37 provided at the tip of the straight portion 36 of the motor band 31 is engaged with the fixing claw 25 of the motor support plate portion 22. The mounting portion 32 at the end of the motor band 31 is opposed to the mounting piece 26 of the motor support plate 22 while the bent portion 35 of the motor band 31 is along the fan motor boss portion 17b. At this time, the temporary hooking claw 27 of the motor support plate portion 22 is inserted into the temporary hooking hole 33 a of the motor band 31, and a mounting piece is provided between the temporary hooking piece 33 and the positioning piece 34 of the motor band 31. The attachment portions 32 of the motor band 31 are positioned by engaging both side edges of the motor 26. Thereby, the mounting hole 32a of the mounting portion 32 and the mounting hole 26a of the mounting piece 26 face each other. As shown in FIG. 4B, the motor band 31 is fixed to the motor base 21 and the fan motor 17 is fixed to the motor base assembly 20 by inserting and fixing the fixtures 38 into these holes. .

  Next, in the built-in type air conditioner 100 configured as described above, a description will be given of an attaching / detaching operation of the fan motor 17 during maintenance such as cleaning of the fan 19 or replacement of the fan motor 17. As described above, the attachment / detachment work of the fan motor 17 is performed with the main body 1 attached to the installation location.

First, the operation of removing the fan motor 17 during maintenance will be described.
As shown in FIG. 5A, the mounting portion 32 of the motor band 31 and the mounting piece 26 of the motor base 21 are fastened and fixed by a mounting tool 38. The attachment tool 38 is removed from this state. By removing the attachment 38, the attachment portion 32 of the motor base 31 moves downward so as to be separated from the attachment piece 26 of the motor base 21 due to the weight of the fan motor 17. Here, the engagement state between the slit 37 of the motor band 31 and the fixing claw 25 of the fan base 21 is maintained, and the motor band 31 rotates downward about this engagement portion.
6A, the base 27a of the temporary hooking pawl 27 of the motor base 21 comes into contact with the edge of the temporary hooking hole 33a of the motor band 31, and the motor band 31 rotates. Movement is regulated. That is, the engaging portion 33a2 of the temporary hooking hole 33a of the motor band 31 is engaged with the protruding portion 37b of the temporary hooking claw 27 of the motor base 21, and as shown in FIG. 21 is temporarily suspended. Although the fan motor 17 is also lowered by the rotation of the motor band 31, the fan motor 17 is temporarily fixed to the fan base 21 by the temporarily hooked motor band 31. In the temporarily hooked state of the motor band 31, the hook portion 33a2 of the temporary hook hole 33a of the motor band 31 and the protrusion portion 37b of the temporary hook 27 of the motor base 21 are hooked. The motor 17 is not displaced in the axial direction, and the fan motor 17 can be prevented from being accidentally dropped in the temporarily hooked state.

  From this state, as shown in FIG. 5 (c), the mounting portion 32 side of the motor band 31 is pushed upward, and as shown in FIG. 6 (b), the engagement portion 33a2 of the temporary engagement hole 33a and the temporary engagement The engagement with the protrusion 27b of the claw 27 is released. In this state, as shown in FIG. 6C, the attachment portion 32 side of the motor band 31 is moved outward. The temporary hooking claw 27 is removed from the temporary hooking hole 33a, and the temporary hooking state of the motor band 31 is released. Thereby, as shown in FIG.5 (d), the motor band 31 rotates more largely than the time of a temporary hooking state. The fan motor 17 is temporarily fixed to the motor base 21 by the motor band 31 and can be detached from the motor base 21.

  In the removal operation of the fan motor 17, even if the attachment tool 38 is removed, the motor band 31 is temporarily hooked on the motor base 21, and the fan motor 17 is supported by the motor band 31. There is nothing to do. At this time, the fan motor 17 can be removed from the motor base 21 by supporting the fan motor 17 with one hand and releasing the temporary hooking of the motor band 31 with the other hand. That is, a worker who supports the conventional fan motor 17 is not required, and the removal work of the fan motor 17 which has been conventionally performed by two persons can be performed by one person.

Next, attachment of the fan motor 17 during maintenance will be described.
The fan motor 17 is prepared, the motor main body 17a is inserted between the motor support plate portions 22 of the motor base 21, and the boss portions 17b projecting on both side surfaces of the motor main body 17a are motor receiving portions of the motor support plate portion 22. 24.
While supporting the fan motor 17 with one hand, the motor band 31 is prepared with the other hand. As shown in FIG. 5 (d), the slit 37 provided at the front end of the straight portion 36 of the motor band 31 is provided with a motor. Engage with the fixing claws 25 of the support plate 22. The motor band 31 is rotated upward about this hooking portion, and the mounting portion 32 at the end of the motor band 31 is moved to the motor support plate portion 22 while the bent portion 35 of the motor band 31 is placed along the fan motor boss portion 17b. It is made to oppose the attachment piece 26 of this. At this time, as shown in FIG. 6B, the temporary hooking claw 27 of the motor support plate portion 22 is inserted into the temporary hooking hole 33 a of the attachment portion 32 at the end of the motor band 31.
When the hand is released from the motor band 31 in this state, the motor band 31 rotates downward about the engaging portion of the slit 37 and the fixing claw 25 due to its own weight and the weight of the fan motor 17, and FIG. As shown in FIG. 3, the motor base 21 is temporarily hooked. That is, as shown in FIG. 6A, the engaging portion 33 a 2 of the temporary hooking hole 33 a of the motor band 31 is engaged with the protruding portion 37 b of the temporary hooking claw 27 of the motor base 21. At this time, the mounting hole 32a of the motor band 31 and the mounting hole 26a of the motor base 21 are opposed to each other, and the mounting tool 38 is inserted into these holes to be fastened and fixed. By fastening the mounting tool 38, the motor base 31 rotates upward about the engaging portion of the slit 37 and the fixing claw 25, and finally, as shown in FIG. 17 is fixed to the motor base 21 by a motor band 31. During the fastening of the fixture 38, the engagement between the engagement portion 33a2 of the temporary engagement hole 33a of the motor band 31 and the projection 27b of the temporary engagement claw 27 of the motor base 21 is released. Since both side edges of the mounting piece 26 are engaged between the temporary hooking piece 33 and the positioning piece 34, the motor band 31 is not displaced in the axial direction of the fan motor 17, and the fastener 38 is fastened. Inadvertent dropping of the fan motor 17 in the middle can be prevented.

  Also in the mounting operation of the fan motor 17, the fan motor 17 does not fall in a state where the motor band 31 is temporarily hooked on the motor base 21 as in the fan motor removing operation. That is, the worker who only supports the conventional fan motor 17 becomes unnecessary, and the removal work of the fan motor 17 which has been conventionally performed by two persons can be performed by one person.

  As described above, according to the built-in type air conditioner 100 of the present embodiment, the fan motor 17 can be easily attached and detached, and the maintainability is improved.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, 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.

  DESCRIPTION OF SYMBOLS 1 ... Main body, 2 ... Blower chamber, 3 ... Heat exchanger chamber, 4 ... Partition plate, 5 ... Blower, 6 ... Heat exchanger, 17 ... Fan motor, 20 ... Fan motor base assembly, 21 ... Motor base, 22 ... Motor band 27 ... Temporary hook nail 33a ... Temporary hook hole

Claims (1)

In a built-in type air conditioner equipped with a blower and a heat exchanger,
The blower includes a fan motor fixed by a fan motor base and a motor band,
The fan motor base includes temporary pawls,
The motor band is provided with a built-in type air conditioner having a temporary hooking hole through which the temporary hooking hook engages.

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