WO2018185842A1

WO2018185842A1 - Indoor unit for air conditioner

Info

Publication number: WO2018185842A1
Application number: PCT/JP2017/014111
Authority: WO
Inventors: 久典池田; 將太須貝
Original assignee: 三菱電機株式会社
Priority date: 2017-04-04
Filing date: 2017-04-04
Publication date: 2018-10-11
Also published as: JP6727411B2; CN208846713U; JPWO2018185842A1

Abstract

An indoor unit for an air conditioner comprises an installation plate secured to a wall surface, and a casing that has a rear surface casing attached to the installation plate and a side surface casing attached to the rear surface casing. A rear surface flange part that protrudes toward the installation plate and engages with the installation plate is provided to one end of the rear surface casing. The side surface casing has a bottom surface part that covers the rear surface flange part. A rod insertion hole comprising a space that communicates with the exterior of the casing is formed, from the side-surface side toward the rear-surface side, between the rear surface flange part and the bottom surface part of the side surface casing. Provided to the rod insertion hole is a disengagement projection that protrudes from the rear surface flange part toward the bottom surface part of the side surface casing. A rod that is inserted into the rod insertion hole from the exterior of the casing is thrust toward the disengagement projection and pushes the rear surface flange part upward, which results in disengagement.

Description

Air conditioner indoor unit

The present invention relates to an indoor unit of an air conditioner.

Conventionally, in an indoor unit of an air conditioner, a configuration in which a casing in which a heat exchanger, a blower fan, an electrical component box, and the like are housed is attached to an installation plate fixed to an indoor wall surface is known.

For example, the air conditioner of Patent Document 1 discloses a structure in which the rear surface of the casing of an indoor unit is attached to an installation plate. Specifically, the casing is provided in the upper part on the back side, and an engaging part to be engaged with the installation plate and a plate part provided in the lower part are integrally formed. On the upper surface of the plate portion, a locking claw for locking in a hole formed in the installation plate is provided. The casing is attached to the installation plate by engaging the engaging portion with the upper end of the installation plate and locking the locking claw in the hole of the installation plate. The casing is removed from the installation plate by releasing the locking state of the locking claw locked to the hole of the installation plate with the tip of a driver inserted obliquely from the hole formed on the front side of the casing.

JP-A-61-70328

The air conditioner disclosed in Patent Document 1 has a configuration in which a locking claw is provided on the upper surface of a plate portion constituting the lower surface of the casing. In order to increase the bonding strength between the locking claw and the installation plate, it is necessary to form the locking claw thick. However, there is a possibility that sink marks may occur on the lower surface of the plate portion by forming the locking claws thick. When this sink mark is seen from the outside, it looks bad, and there is a problem that the design property is impaired as a whole. Also, when removing the casing from the installation plate, with the inside of the casing not visible, insert the screwdriver's shaft diagonally and remove the locking claws that have been securely locked from the holes in the installation plate, while moving the casing upward It is necessary to lift it up to release the locked state. Therefore, it is extremely difficult to remove the casing from the installation plate.

The present invention has been made in order to solve the above-described problems, and there is no sink mark generated by increasing the bonding strength with the mounting plate from the outside, and the appearance is excellent in design. An object of the present invention is to provide an indoor unit of an air conditioner that can be presented and the casing can be easily detached from the installation plate.

An indoor unit of an air conditioner according to the present invention includes an installation plate fixed to a wall surface, a rear casing attached to the installation plate, and a casing having a front casing attached to the rear casing. On one end side, there is provided a rear flange portion that protrudes toward the installation plate and engages with the installation plate, and the front casing has a bottom surface portion that covers the rear flange portion, and the rear flange portion Between the front casing and the bottom portion of the front casing, a bar insertion hole comprising a space communicating with the outside of the casing is formed from the front side toward the back side, and the bar insertion is inserted into the rear flange portion A disengagement projection that protrudes toward the bottom surface of the front casing is provided at a location where a hole is formed. Wherein the bar inserted inserted rod into the hole by pushing up the rear flange portion abutted against the engaging releasing projections, in which the engagement state is released.

According to the indoor unit of the air conditioner according to the present invention, the back flange portion is covered with the bottom surface portion of the front casing even if sink marks occur in the back flange portion due to the increased bonding strength with the installation plate. In addition, sink marks are not visually recognized from the outside, and an appearance with excellent design can be exhibited. Further, in the indoor unit of the air conditioner according to the present invention, for example, by inserting a bar material such as a driver into the bar insertion hole and abutting the engagement release protrusion, the engagement between the rear flange part and the installation plate Since the state can be easily released, the workability of the removal work can be improved.

It is a perspective view of the indoor unit of the air conditioner concerning an embodiment of the invention. It is sectional drawing which showed the internal structure of the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the indoor unit of the air conditioner which concerns on embodiment of this invention, Comprising: It is the principal part expanded sectional view which showed the joining state of the front casing and the back casing. It is the A section enlarged view of FIG. It is the B section enlarged view of FIG. It is the C section enlarged view of FIG. 1 which showed the state which removed the cover material from the front casing. It is the indoor unit of the air conditioner which concerns on embodiment of this invention, Comprising: It is the B section enlarged view of FIG. 2 which showed the different form of the engagement cancellation | release protrusion part. It is an indoor unit of the air conditioner which concerns on embodiment of this invention, Comprising: It is explanatory drawing which showed the point which removes a casing from an installation board. It is an indoor unit of the air conditioner which concerns on embodiment of this invention, Comprising: It is explanatory drawing which showed the point which removes a casing from an installation board.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof is omitted or simplified as appropriate. Moreover, about the structure as described in each figure, the shape, a magnitude | size, arrangement | positioning, etc. can be suitably changed within the scope of the present invention.

Embodiment.
FIG. 1 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing the internal structure of the indoor unit of the air conditioner according to the embodiment of the present invention. FIG. 3 shows an indoor unit of the air conditioner according to the embodiment of the present invention, and is an enlarged cross-sectional view of a main part showing a joined state of the front casing and the rear casing.

The indoor unit 100 of the air conditioner according to the present embodiment is attached to, for example, a wall of a room and performs indoor air conditioning. As shown in FIGS. 1 and 2, the indoor unit 100 has a substantially box shape having an installation plate 4 fixed to the wall surface 15, a rear casing 2 attached to the installation plate 4, and a front casing 3 attached to the rear casing 2. And a casing 1 configured as described above.

As shown in FIG. 3, the front casing 3 and the rear casing 2 are formed at positions where

joint holes

50 and 51 made of screw holes are common, and the joint member 14 made of a screw member screwed into the screw hole is used. It is joined. The joint hole 50 is formed in a recess 33 in which the front casing 3 is recessed inward. For example, the joint holes 50 are formed in two at intervals in the longitudinal direction of the indoor unit 100. Further, the joint hole 50 is covered with a design cover material 5 fitted in the recess 33 so as not to be seen from the outside. The positions and the number of the

joining holes

50 and 51 are appropriately changed according to the size and shape of the casing 1.

As shown in FIG. 2, a suction port 10 serving as an entrance for room air is formed on the upper surface of the front casing 3. Moreover, the blower outlet 11 extended in the left-right direction is provided in the lower part of the front casing 3, as shown in FIG. As shown in FIGS. 1 and 2, the air outlet 11 is provided with a wind improving lower change plate 13 that controls the vertical direction of the blown air. Note that a design panel 12 that can be opened and closed is attached to the front casing 3.

As shown in FIG. 2, a heat exchanger 6, a blower fan 7, and an electrical component box (not shown) are accommodated in the casing 1. The indoor unit 100 is connected to an outdoor unit (not shown) through a refrigerant pipe to constitute a refrigeration cycle.

The heat exchanger 6 functions as an evaporator during cooling operation to cool the air, and functions as a condenser (heat radiator) during heating operation to heat the air. The heat exchanger 6 is attached to the rear casing 2, is an air path from the suction port 10 to the air outlet 11, and is disposed on the upstream side of the blower fan 7. The illustrated heat exchanger 6 includes a first heat exchanger 60 disposed on the front side closer to the lower portion, and a second heat exchanger 61 disposed from the upper portion on the front side to the top surface. However, the configuration and arrangement of the heat exchanger 6 are not limited to the illustrated forms. In addition, the heat exchanger 6 is good to comprise, for example with the plate fin and tube type heat exchanger which can exchange heat between the refrigerant | coolant which flows through refrigerant | coolant piping, and the air which passes a fin.

A drain pan 8 is provided below the heat exchanger 6 to receive water droplets that have dewed on the surface of the heat exchanger 6. The dew condensation water collected in the drain pan 8 is guided to the outside by a drainage mechanism (not shown).

The blower fan 7 sucks room air from the suction port 10 and blows out conditioned air from the blowout port 11. The blower fan 7 is attached to the rear casing 2, is an air path from the suction port 10 to the blowout port 11, and is disposed on the downstream side of the heat exchanger 6. In addition, it is good to comprise the ventilation fan 7 with a crossflow fan, for example.

The electrical box contains a control device for controlling the indoor unit 100 and is mounted on the rear casing 2. The control device is composed of, for example, a microprocessor unit.

Next, the structure for attaching the casing 1 to the mounting plate 4 fixed to the wall surface 15 will be described in detail with reference to FIGS. 1 to 3 with reference to FIGS. FIG. 4 is an enlarged view of part A in FIG. FIG. 5 is an enlarged view of a portion B in FIG. FIG. 6 is an enlarged view of part C of FIG. 1 showing a state in which the cover material is removed from the front casing. FIG. 7 is an indoor unit of the air conditioner according to the embodiment of the present invention, and is an enlarged view of part B of FIG. 2 showing a different form of the disengagement protrusion. Hereinafter, the structure of the right side portion of the indoor unit 100 will be described as an example, but the left side portion has the same structure.

The installation plate 4 is composed of a substantially rectangular metal plate, and is fixed to a wall surface 15 of the room with a fixing member such as a screw, a bolt, or a nail. As shown in FIG. 4, a locking portion 41 bent in an L shape toward the rear casing 2 is provided at the upper edge of the installation plate 4 along the longitudinal direction of the indoor unit 100. Further, as shown in FIG. 5, an installation plate flange portion 40 bent toward the rear casing 2 is provided at the lower edge of the installation plate 4. The mounting plate flange portion 40 is formed with a hole as the engaging portion 42. As an example, two engaging portions 42 are formed at intervals in the longitudinal direction of the indoor unit 100. In addition, the engaging part 42 is not limited to a hole, For example, groove shape may be sufficient. Moreover, the engagement part 42 should just be formed 1 or more.

As shown in FIG. 4, a hook portion 21 is formed at the upper end edge of the rear casing 2 so as to be hooked to a locking portion 41 provided on the upper end edge of the installation plate 4. Further, as shown in FIG. 5, a rear flange portion 20 that protrudes toward the installation plate 4 and engages with the installation plate 4 is provided at the lower end edge of the rear casing 2. On the lower surface of the rear flange portion 20, two engagement protrusions 22 fitted into the engagement portion 42 are provided with an interval in the longitudinal direction of the indoor unit 100 as an example. The rear flange portion 20 is engaged with the installation plate 4 by fitting the engagement protrusion 22 into the engagement portion 42. The engagement protrusions 22 are provided corresponding to the number of the engagement portions 42.

The operation of attaching the rear casing 2 to the installation plate 4 is performed by inclining the casing 1 at an angle and hooking the hook portion 21 to the engagement portion 41 of the installation plate 4 and using the engagement portion 41 as a fulcrum. While rotating, the rear flange portion 20 is disposed on the upper surface of the installation plate flange portion 40, and the engaging protrusion 22 is fitted into the engaging portion 42.

Although illustration in detail is omitted, the engaging protrusion 22 may be provided on the upper surface of the rear flange portion 20. In this case, the rear casing 2 is disposed on the lower surface of the installation plate flange 40 and the rear casing 2 is attached to the installation plate 4 by fitting the engagement protrusion 22 into the engagement unit 42.

The front casing 3 has a bottom surface portion 30 that covers the back flange portion 20 as shown in FIGS. 2 and 5. In other words, the indoor unit 100 of the air conditioner is formed with a thick engagement protrusion 22 in order to increase the bonding strength with the installation plate 4, and even if the back flange 20 has a sink mark, the front casing 3. Since the back surface flange portion 20 is covered with the bottom surface portion 30, sink marks are not visually recognized from the outside, and an appearance with excellent design can be exhibited.

Between the back flange part 20 and the bottom face part 30 of the front casing 3, a rod insertion hole 31 consisting of a space communicating with the outside of the casing 1 is formed from the front side toward the back side. The hole diameter of the rod material insertion hole 31 is a dimension that allows a shaft portion such as a driver to pass through, for example, and is about 5 mm to 10 mm.

As shown in FIG. 6, the front casing 3 is formed with an insertion opening 32 serving as an inlet of the bar insertion hole 31. The insertion opening 32 is formed adjacent to the joint hole 50 in a recess 33 in which the front side of the front casing 3 is recessed inward. The distance between the insertion opening 32 and the bonding hole 50 is such a dimension that the screw boss of the screw member that is the bonding member 14 does not hit the insertion opening 32, and is, for example, about 12 mm. The insertion opening 32 has substantially the same diameter as that of the rod insertion hole 31.

The cover member 5 that covers the insertion opening 32 and the joint hole 50 in common is detachably attached to the front casing 3. The cover material 5 is the same material as the front casing 3 and is made of, for example, a synthetic resin. That is, the design property can be improved by covering the insertion opening 32 and the joint hole 50 with the cover material 5 so that they cannot be seen from the outside. Further, by covering the insertion opening 32 and the joint hole 50 in common with one cover material 5, the number of members can be reduced, and the manufacturing cost can be reduced. The cover material 5 is removed from the front casing 3 when the bar 9 is inserted into the bar insertion hole 31.

Note that the insertion opening 32 and the joint hole 50 are not necessarily provided adjacent to each other, and may be formed at positions separated from each other. In this case, it is desirable to provide a cover material in each of the insertion opening 32 and the joint hole 50 so that the insertion opening 32 and the joint hole 50 cannot be seen from the outside.

Further, the rear flange portion 20 is provided with an engagement release protrusion 23 protruding toward the bottom surface portion 30 of the front casing 3 at a position where the bar insertion hole 31 is formed. The disengagement protrusion 23 is provided on the front side of the engagement protrusion 22 provided at the position where the bar insertion hole 31 is formed and so as to protrude from the bottom surface 30 of the engagement protrusion 22. It has been.

As shown in FIG. 5, the disengagement projection 23 is formed in a shape having an inclined surface that is inclined downward from the front side of the casing 1 toward the back side. In addition, as shown in FIG. 7, the structure which made the shape which has a curved surface toward the back side from the front side of the casing 1 may be sufficient as the engagement cancellation | release protrusion part 23. As shown in FIG. The engagement release protrusion 23 shown in FIG. 7 has a shape with a curved surface as a whole, but may have a shape with a curved surface only on the front side of the casing 1.

Next, the procedure for removing the casing 1 from the installation plate 4 will be described with reference to FIGS. 8 and 9 with reference to FIG. FIG.8 and FIG.9 is the indoor unit of the air conditioner which concerns on embodiment of this invention, Comprising: It is explanatory drawing which showed the point which removes a casing from an installation board.

First, as shown in FIG. 6, the cover material 5 is removed from the front casing 3 to expose the insertion opening 32. Then, as shown in FIG. 8, a shaft portion such as a screwdriver that is the bar 9 is inserted from the insertion opening 32 into the bar insertion hole 31 in a substantially horizontal direction. Then, as shown in FIG. 9, the tip of the bar 9 abuts on the engagement release projection 23 and is guided below the engagement release projection 23 along the inclined surface of the engagement release projection 23. When the bar 9 is pushed in as it is, the force pushed in the horizontal direction is distributed upward and obliquely downward, and the disengagement protrusion 23 is pushed upward. Since the engagement protrusion 22 is provided on the rear flange portion 20 together with the engagement release protrusion 23, the engagement protrusion 22 is also pushed upward in conjunction with the upward push of the engagement release protrusion 23. Is released from the engaging portion 42 and the engaged state is released. Note that the disengagement protrusion 23 is preferably provided as close to the engagement protrusion 22 as possible. The engaging protrusion 22 can be easily detached from the engaging portion 42, and workability can be improved.

After the engagement state between the rear flange portion 20 and the installation plate 4 is released, the casing 1 is rotated to the front side with the locking portion 41 as a fulcrum, and the hook portion 21 is removed from the locking portion 41 to thereby remove the casing. 1 can be removed from the mounting plate 4. If the hook portion 21 is detached from the locking portion 41 at the same time as the engagement state is released, the casing 1 is detached from the installation plate 4 and it is very dangerous. For this reason, the hook portion 21 needs to be locked to the locking portion 41 even when the engaged state is released.

In the indoor unit 100 of the air conditioner according to the present embodiment, the engagement state between the rear flange portion 20 and the installation plate 4 can be easily achieved by simply inserting the bar 9 into the bar insertion hole 31 in a substantially horizontal direction. For example, even if there is a curtain rail or a long press or the like below the indoor unit 100, the engaged state can be released regardless of the presence of the curtain rail or the long press or the like.

As described above, according to the indoor unit 100 of the air conditioner of the present embodiment, the installation plate 4 fixed to the wall surface 15, the rear casing 2 attached to the installation plate 4, and the front casing attached to the rear casing 2. A casing 1 having three. A rear flange portion 20 that protrudes toward the installation plate 4 and engages with the installation plate 4 is provided on one end side of the rear casing 2. The front casing 3 has a bottom surface 30 that covers the back flange 20. Therefore, the indoor unit 100 of this air conditioner covers the back flange portion 20 with the bottom surface portion 30 of the front casing 3, so that the back flange portion 20 is sinked by increasing the bonding strength with the installation plate 4. Even so, sink marks are not visually recognized from the outside, and an appearance with excellent design can be exhibited. Moreover, since the dividing line which arises by abutting the bottom face part 30 of the front casing 3 and the back surface flange part 20 of the back casing 2 is not formed, the designability can be improved.

Also, a bar insertion hole 31 formed of a space communicating with the outside of the casing 1 is formed from the front side to the back side between the rear flange part 20 and the bottom part 30 of the front casing 3. The rear flange portion 20 is provided with an engagement release projection portion 23 that protrudes toward the bottom surface portion 30 of the front casing 3 at a position where the bar insertion hole 31 is formed. That is, the engagement state is released by pushing the bar 9 inserted into the bar insertion hole 31 from the outside of the casing 1 against the engagement release projection 23 and pushing up the rear flange 20. Therefore, the indoor unit 100 of the air conditioner can be engaged with the rear flange portion 20 and the installation plate 4 simply by inserting a shaft portion of a driver or the like into the bar insertion hole 31 and abutting against the engagement release projection portion 23. Since the state can be easily released, anyone can easily remove the casing 1 from the installation plate 4, and the workability of the removal work can be improved. That is, work efficiency at the time of relocation, disposal, and maintenance of the indoor unit 100 can be increased.

Further, the rear flange portion 20 is provided with an engaging projection portion 22 that protrudes toward the bottom surface portion 30 of the front casing 3 at a place where the bar insertion hole 31 is formed. On one end side of the mounting plate 4, a mounting plate flange portion 40 having an engaging portion 42 into which the engaging protrusion 22 is fitted is provided. That is, the indoor unit 100 of the air conditioner has a simple and simple configuration in which the engagement protrusion 22 is fitted into the engagement portion 42 and the rear flange portion 20 is engaged with the installation plate 4. The workability of the work to attach to 4 and the work to remove can be improved.

Further, the engagement release protrusion 23 is provided on the front side of the engagement protrusion 22. Therefore, the tip of the bar 9 inserted into the bar insertion hole 31 can be reliably abutted against the disengagement protrusion 23.

The disengagement protrusion 23 has a shape having an inclined surface that is inclined downward from the front side of the casing 1 toward the back side, or a shape having a curved surface from the front side of the casing 1 to the back side. . That is, the tip of the bar 9 inserted into the bar insertion hole 31 hits the engagement release projection 23 and is below the engagement release projection 23 along the inclined surface or the curved surface of the engagement release projection 23. The force that is guided and pushed in the horizontal direction is distributed upward and obliquely downward, and the disengagement protrusion 23 can be pushed upward. Therefore, since the indoor unit 100 of the air conditioner becomes difficult to push the bar 9 inserted into the bar insertion hole 31, the engagement state of the engagement protrusion 22 can be easily released even with a small force. The workability of the work of removing the casing 1 from the installation plate 4 can be improved.

Further, the front casing 3 is formed with an insertion opening 32 serving as an inlet of the rod insertion hole 31 adjacent to the joining hole 50 through which the joining member 14 for joining the front casing 3 and the rear casing 2 is passed. The cover member 5 that covers the insertion opening 32 and the joint hole 50 in common is detachably attached. Therefore, since the indoor unit 100 of the air conditioner is covered with the cover material 5 so that the insertion opening 32 and the joint hole 50 cannot be visually recognized from the outside, the design can be improved and one cover material can be provided. 5, since the insertion opening 32 and the joint hole 50 are commonly covered, the number of members can be reduced, and the manufacturing cost can be reduced.

Although the present invention has been described above based on the embodiment, the present invention is not limited to the configuration of the embodiment described above. For example, the illustrated internal configuration of the indoor unit 100 is an example, and is not limited to the above-described content, and an indoor unit including other components can be similarly implemented. In short, it should be noted that the scope of the present invention also includes the scope of various changes, applications, and uses made by those skilled in the art as needed.

1 casing, 2 back casing, 3 front casing, 4 mounting plate, 5 cover material, 6 heat exchanger, 7 blower fan, 8 drain pan, 9 bar, 10 suction port, 11 air outlet, 12 design panel, 13 wind improvement Change plate, 14 joining member, 15 wall surface, 20 rear flange part, 21 hook part, 22 engaging projection part, 23 disengaging projection part, 30 bottom part, 31 bar insertion hole, 32 insertion opening part, 33 concave part, 40 mounting plate flange part, 41 locking part, 42 engaging part, 50, 51 joint hole, 60 first heat exchanger, 61 second heat exchanger, 100 indoor unit.

Claims

An installation plate fixed to the wall;
A casing having a rear casing attached to the installation plate and a front casing attached to the rear casing;
One end of the rear casing is provided with a rear flange portion that protrudes toward the installation plate and engages with the installation plate.
The front casing has a bottom surface portion that covers the back flange portion,
Between the back flange portion and the bottom portion of the front casing, a rod insertion hole consisting of a space communicating with the outside of the casing is formed from the front side toward the back side,
The rear flange portion is provided with an engagement release protrusion that protrudes toward the bottom surface portion of the front casing at a location where the bar insertion hole is formed,
An air conditioner having a configuration in which an engagement state is released by pushing a bar inserted into the bar insertion hole from the outside of the casing against the engagement release protrusion and pushing up the rear flange. Indoor unit.
The rear flange portion is provided with an engagement protrusion that protrudes toward the bottom surface of the front casing at a location where the bar insertion hole is formed,
On one end side of the installation plate, an installation plate flange portion having an engagement portion into which the engagement projection portion is fitted is provided,
The indoor unit of an air conditioner according to claim 1, wherein the rear flange portion is engaged with the installation plate by fitting the engagement protrusion into the engagement portion.
The indoor unit of an air conditioner according to claim 2, wherein the engagement release protrusion is provided on the front side of the engagement protrusion.
The engagement release protrusion has a shape having an inclined surface inclined downward from the front side of the casing toward the back side, or a shape having a curved surface from the front side of the casing to the back side. Item 4. The indoor unit for an air conditioner according to any one of Items 1 to 3.
In the front casing, an insertion opening serving as an inlet of the bar insertion hole is formed adjacent to a joining hole through which a joining member for joining the front casing and the rear casing is passed,
The indoor unit for an air conditioner according to any one of claims 1 to 4, wherein a cover member that covers the insertion opening and the joint hole is detachably attached.