JP6847250B2 - Indoor unit of air conditioner - Google Patents

Description

The present invention relates to an indoor unit of an air conditioner provided with a pipe hole forming portion for forming a pipe passage port in a housing forming an outer shell.

Conventionally, it is known that an indoor unit of an air conditioner is provided with a pipe hole forming portion for forming a pipe passage port in a housing forming an outer shell. A plurality of pipe hole forming portions are formed in the lower right corner portion and the lower left corner portion of the housing, and when the pipe connected to the outdoor unit is pulled out, it is appropriately selected and cut according to the installation location. For example, the indoor unit of an air conditioner disclosed in Patent Document 1 has a configuration in which a piping hole forming portion is provided on the inner surface side of the housing. This pipe hole forming portion is composed of an arc-shaped notch groove portion that matches the shape of the pipe, and is cut along the notch groove portion using a cutting tool such as nippers.

JP-A-2002-349894

When the piping hole forming portion is configured as a notch groove portion as in the indoor unit of the air conditioner disclosed in Patent Document 1, local stress is concentrated on the notch groove portion due to the load when installing the indoor unit. There is a risk that the housing will crack.

The present invention has been made to solve the above problems, and provides an indoor unit of an air conditioner capable of preventing a situation in which local stress is concentrated on a pipe hole forming portion. With the goal.

The indoor unit of the air conditioner according to the present invention is an indoor unit of an air conditioner provided with a piping hole forming portion for forming a pipe passage port in a housing forming an outer shell, and the housing is a housing. It has an L-shaped cover molded from a single resin material, and the piping hole forming portion is made thinner than the surrounding plate thickness on each surface of the L-shaped cover with the bent portion as a boundary. It is composed of a formed range, and at least one of the pipe hole forming portions is formed in the range adjacent to the first piping hole forming portion and the outside of the first piping hole forming portion. It has a second pipe hole forming portion, and the plate thickness of the first piping hole forming portion is different from the plate thickness of the second piping hole forming portion .

According to the indoor unit of the air conditioner according to the present invention, since the pipe hole forming portion is formed in a range formed to be thinner than the surrounding plate thickness, stress can be dispersed on the thin surface, and the stress can be dispersed locally. It is possible to prevent the situation where stress is concentrated on the air conditioner.

It is a perspective view which showed the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is a perspective view which showed the L-shaped cover of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention from the outer surface side. It is a perspective view which showed the L-shaped cover of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention from the inner surface side. It is a perspective view which showed the state which passed the pipe through the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is the L-shaped cover of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention, and is the perspective view which showed the state which formed the pipe passage opening from the outer surface side. It is the L-shaped cover of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention, and is the perspective view which showed the state which formed the pipe passage opening from the inner surface side. It is a perspective view which shows the structure which is the L-shaped cover of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention, and has the structure which the pipe hole forming part has the surface texture different from the surroundings. It is explanatory drawing which showed the molding procedure of the L-shaped cover in Embodiment 1 of this invention. It is explanatory drawing which showed the molding procedure of the L-shaped cover in Embodiment 1 of this invention. It is explanatory drawing which showed the molding procedure of the L-shaped cover in Embodiment 1 of this invention. It is explanatory drawing which showed the problem in molding the conventional L-shaped cover. It is a perspective view which showed the L-shaped cover of the indoor unit of the air conditioner which concerns on Embodiment 2 of this invention from the inner surface side. FIG. 5 is a perspective view showing a state in which a piping passage port is formed on an L-shaped cover of an indoor unit of an air conditioner according to a second embodiment of the present invention from the inner surface side. FIG. 5 is a perspective view showing a state in which a piping passage port is formed on an L-shaped cover of an indoor unit of an air conditioner according to a second embodiment of the present invention from the inner surface side.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and the description thereof will be omitted or simplified as appropriate. In addition, the shape, size, arrangement, etc. of the configurations shown in each figure can be appropriately changed within the scope of the present invention.

Embodiment 1.
FIG. 1 is a perspective view showing an indoor unit of the air conditioner according to the first embodiment of the present invention. The indoor unit 100 shown in FIG. 1 is attached to, for example, a wall of a room to air-condition the room. The indoor unit 100 includes a housing 1 that forms an outer shell of the indoor unit 100, a heat exchanger (not shown), a blower fan, an electric component box, and the like housed inside the housing 1.

The housing 1 is, for example, a back case 2 and a front case 3 attached to the back case 2, and is substantially formed in a rectangular parallelepiped box shape. The front case 3 is formed with an air outlet 30 in which a wind direction adjusting member for adjusting the wind direction is arranged. In the indoor unit 100, when the blower fan operates, the indoor air is taken into the indoor unit 100, the taken-in air is heat-exchanged by the heat exchanger, and the heat-exchanged air-conditioned air enters the room from the outlet 30. Blow out.

The back case 2 is provided with a first side surface panel 4 and a first lower surface panel 5 that form a part of a lower right corner of the housing 1 so as to be detachable. Further, the back case 2 is provided with a second side surface panel 6 and a second lower surface panel 7 that form a part of a lower left corner portion of the housing 1 so as to be detachable. The first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7 may be provided on the front case 3.

Next, the specific configurations of the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7 will be described with reference to FIGS. 2 to 6 with reference to FIG. FIG. 2 is a perspective view showing the L-shaped cover of the indoor unit of the air conditioner according to the first embodiment of the present invention from the outer surface side. FIG. 3 is a perspective view showing the L-shaped cover of the indoor unit of the air conditioner according to the first embodiment of the present invention from the inner surface side. FIG. 4 is a perspective view showing a state in which a pipe is passed through the indoor unit of the air conditioner according to the first embodiment of the present invention. FIG. 5 is an L-shaped cover of the indoor unit of the air conditioner according to the first embodiment of the present invention, and is a perspective view showing a state in which a pipe passage port is formed from the outer surface side. FIG. 6 is a perspective view of an L-shaped cover of the indoor unit of the air conditioner according to the first embodiment of the present invention, showing a state in which a pipe passage port is formed from the inner surface side. The second side surface panel 6 is symmetrical with the first side surface panel 4. Further, the second lower surface panel 7 is symmetrical with the first lower surface panel 5. Therefore, the configurations of the second side surface panel 6 and the second lower surface panel 7 are shown in parentheses in FIGS. 2, 3, 5, and 6, and are common to the first side surface panel 4 and the first lower surface panel 5. Will be described with reference to.

As shown in FIGS. 1 and 2, the first side surface panel 4 forms the lower end portion of the right side surface of the housing 1. The first lower surface panel 5 forms the right end portion of the lower surface of the housing 1. The first side surface panel 4 and the first lower surface panel 5 are integrally molded as an L-shaped cover 8, and form a lower right corner portion of the housing 1.

As shown in FIG. 3, a mounting portion 8a for mounting on the back case 2 is provided at an end portion of the first side surface panel 4 and an end portion of the first lower surface panel 5. The L-shaped cover 8 is attached to the back case 2 by engaging the mounting portion 8a with an engaging portion (not shown) provided on the back case 2. The inner surface of the L-shaped cover 8 is provided with reinforcing ribs 8b along the side edges.

Further, as shown in FIGS. 1 and 2, the second side surface panel 6 forms the lower end portion of the left side surface of the housing 1. The second lower surface panel 7 forms the left end portion of the lower surface of the housing 1. The second side surface panel 6 and the second lower surface panel 7 are integrally molded as an L-shaped cover 9, and form a lower left corner portion of the housing 1.

As shown in FIG. 3, a mounting portion 9a for mounting on the back case 2 is provided at an end portion of the second side surface panel 6 and an end portion of the second lower surface panel 7. The L-shaped cover 9 is attached to the back case 2 by engaging the attachment portion 9a with an engaging portion (not shown) provided on the back case 2. The inner surface of the L-shaped cover 9 is provided with reinforcing ribs 9b along the side edges.

In the indoor unit 100 of the air conditioner according to the first embodiment, as shown in FIGS. 3 and 4, the inner surfaces of the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7. A pipe hole forming portion 10 for forming the pipe passage port 11 is provided on the side. In the indoor unit 100, as shown in FIGS. 1 and 2, since the piping hole forming portion 10 is provided on the inner surface side of the panel, the outer surface side becomes a flat surface, and the design of the appearance can be improved. However, the pipe hole forming portion 10 may be provided on the outer surface side of the panel. As shown in FIGS. 4 to 6, when the pipe 20 for connecting the indoor unit 100 and the outdoor unit is passed through the pipe hole forming portion 10, any one of the four is used with a cutting tool such as a nipper. It is cut off and becomes the pipe passage port 11.

The pipe hole forming portion 10 is formed in a range formed to be thinner than the surrounding plate thickness which is another part of the panel. Since the pipe hole forming portion 10 is formed to be thinner than the other parts of the panel, it can be easily cut by a cutting tool. As shown in FIG. 3, the pipe hole forming portion 10 is formed so that one side of the outer edge portion 12 becomes the edge of the L-shaped cover 8 or 9 in order to serve as the entrance of the blade of the cutting tool.

As shown in FIG. 3, the pipe hole forming portion 10 has a shape in which a part of a substantially quadrangular shape is arcuate, and has a configuration that matches the outer shape of the pipe 20. The size of the pipe hole forming portion 10 is, for example, about 4 cm × 5.5 cm as a dimension through which the pipe 20 can pass. The plate thickness of the pipe hole forming portion 10 is, for example, as thin as about 1 mm to 1.5 mm, which is easy to cut with a cutting tool. The pipe hole forming portion 10 may have a size and shape that allows the pipe 20 to pass through, and may be appropriately modified and formed according to the implementation situation.

FIG. 7 is a perspective view showing an L-shaped cover of the indoor unit of the air conditioner according to the first embodiment of the present invention, in which the pipe hole forming portion has a surface texture different from that of the surroundings. .. As shown in FIG. 7, the pipe hole forming portion 10 may have a surface texture 13 different from that of the surrounding surface. This is to improve the workability of the cutting work by allowing the operator to visually recognize the portion of the pipe hole forming portion 10. The different surface texture 13 means that, for example, the surface of the pipe hole forming portion 10 is roughened, painted or printed to make the surface different from the surroundings.

Next, a procedure for cutting out the pipe hole forming portion 10 to form the pipe passage port 11 will be briefly described. First, the operator has an L-shape including a panel of the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7 which needs to form the pipe passage port 11. The cover 8 is removed from the back case 2. In the case of FIGS. 4 to 6, as an example, the pipe passage port 11 is formed in the first side surface panel 4, and the pipe 20 connected to the outdoor unit is pulled out from the lower end of the right side surface. Next, the operator picks up the removed L-shaped cover 8, inserts the blade of the cutting tool from the edge of the panel on which the piping hole forming portion 10 is formed, cuts along the outer edge portion 12, and cuts the pipe passage port. After forming 11, the L-shaped cover 8 is attached to the back case 2 again.

Next, the molding method of the L-shaped cover 8 will be briefly described with reference to FIG. 8A to 8C are explanatory views showing a procedure for forming an L-shaped cover according to the first embodiment of the present invention. The L-shaped cover 8 is formed by the mold structure 200. As shown in FIG. 8A, the mold structure 200 has an outer slide mold 203, an angular pin 204, and an inner slide mold 205 in addition to the cabin tea 201 and the core 202.

First, as shown in FIG. 8A, the cabin tail 201, the core 202, the outer slide mold 203, the angular pin 204, and the inner slide mold 205 are combined, and the inside of the mold is filled with a liquid resin. When the filled resin is solidified to complete the L-shaped cover 8, the L-shaped cover 8 is removed from the cabin tee 201 together with the core 202 as shown in FIG. 8B. At this time, the angular pin 204 is pulled out, and the outer slide mold 203 is also removed from the L-shaped cover 8. Then, as shown in FIG. 8C, the core 202 and the L-shaped cover 8 are separated by the protrusion pin 202a protruding from the core 202. Finally, the inner slide mold 205 slid using the pipe hole forming portion 10 is removed from the L-shaped cover 8.

Here, a problem in molding the conventional L-shaped cover 14 with the mold structure 200 will be described with reference to FIG. FIG. 9 is an explanatory diagram showing problems in molding a conventional L-shaped cover. The conventional L-shaped cover 14 has a configuration in which a notch groove portion 14a is provided to form a pipe passage port. As shown in FIG. 9, the mold structure 200 for molding the conventional L-shaped cover 14 also includes the outer slide mold 203, the angular pin 204, and the inner slide mold in addition to the cabin tail 201 and the core 202. It has a mold 205 and. The procedure for removing the cabin tee 201 and the outer slide mold 203 is the same as the contents described with reference to FIGS. 8A and 8B.

As shown in FIG. 9, in the conventional L-shaped cover 14, after the core 202 and the L-shaped cover 14 are separated by the protruding pin 202a protruding from the core 202, the notch groove portion 14a slides inward due to an obstacle. The mold 205 cannot be slid (see part X). Therefore, in the conventional L-shaped cover 14, it is necessary to take measures such as forming a notch groove portion 14a at a position that does not interfere with the removal of the inner slide mold 205. Further, in order to form the notch groove portion 14a, it is necessary to use the core 202 and the inner slide mold 205 having a complicated uneven shape, which increases the manufacturing cost.

As described above, in the indoor unit 100 of the air conditioner of the first embodiment, the pipe hole forming portion 10 is formed in a range formed to be thinner than the surrounding plate thickness, so that the stress is dispersed on the thin surface. be able to. Therefore, unlike the conventional indoor unit in which the pipe hole forming portion is formed as the cutout groove portion 14a, the stress is not locally concentrated due to the load when the indoor unit is installed. Therefore, the indoor unit 100 of the air conditioner of the first embodiment can prevent the situation where stress is locally concentrated, and can prevent the housing 1 from being whitened or damaged. Further, the indoor unit 100 of this air conditioner has a simple shape in which the pipe hole forming portion 10 is made thinner than the surrounding plate thickness, so that it is easy to manufacture and is a mold at the time of molding. Productivity can be increased because it is not subject to the restrictions of.

Further, in the configuration in which the piping hole forming portion is formed as the notch groove portion 14a as in the conventional outdoor unit, dust or the like containing oil in the room tends to collect in the notch groove portion 14a after the indoor unit is installed. Therefore, there is a risk that the resin component attacked by the concentrated oil may cause crazing failure due to stress generated during installation. On the other hand, in the indoor unit 100 of the air conditioner of the first embodiment, since the pipe hole forming portion 10 is formed in a range formed to be thinner than the surrounding plate thickness, the oil content in the room is reduced as compared with the notch groove portion 14a. The contained dust and the like are unlikely to accumulate, and the resin component does not cause crazing failure.

Further, the piping hole forming portion 10 is formed on the inner surface of the housing 1. Therefore, in the indoor unit 100 of the air conditioner, the design surface (outer surface) of the housing 1 can be a flat surface, and the design of the appearance can be improved.

Further, the pipe hole forming portion 10 has a surface texture 13 different from that of the surrounding surface. Therefore, in the indoor unit 100 of the air conditioner, the portion of the pipe hole forming portion 10 can be visually recognized by the operator, so that the workability of the cutting work of the piping hole forming portion 10 can be improved.

Further, since the pipe hole forming portion 10 is formed in at least one of the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7, the pipe passage port 11 is provided. When forming, the necessary panel can be removed from the back case 2 or the like and the cutting work can be performed at hand, so that the burden of the cutting work can be reduced.

Embodiment 2.
Next, the indoor unit of the air conditioner according to the second embodiment will be described with reference to FIGS. 10 to 12. FIG. 10 is a perspective view showing the L-shaped cover of the indoor unit of the air conditioner according to the second embodiment of the present invention from the inner surface side. 11 and 12 are perspective views showing a state in which a pipe passage port is formed on the L-shaped cover of the indoor unit of the air conditioner according to the second embodiment of the present invention from the inner surface side. The same configuration as the indoor unit 100 of the air conditioner described in the first embodiment is designated by the same reference numerals, and the description thereof will be omitted as appropriate.

The indoor unit of the air conditioner according to the second embodiment is also provided with a piping hole forming portion 10 on the inner surface side of the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7. This is the same as that of the indoor unit 100 of the first embodiment. In the indoor unit of the air conditioner of the second embodiment, the pipe hole forming portion 10 is composed of a plurality of ranges having different thicknesses. The pipe hole forming portion 10 shown in FIG. 10 has two ranges of a small first piping hole forming portion 10a formed inside and a large second piping hole forming portion 10b formed outside in the first lower surface panel 5. It is composed of. That is, when the outer diameter of the pipe is small, as shown in FIG. 11, the first pipe hole forming portion 10a is cut with a cutting tool such as a nipper to form a pipe passage port 11. On the other hand, when the outer diameter of the pipe is large, as shown in FIG. 12, the first pipe hole forming portion 10a and the second piping hole forming portion 10b are cut with a cutting tool such as nippers to form the pipe passage port 11. To. The first pipe hole forming portion 10a and the second piping hole forming portion 10b may be formed not only on the first lower surface panel 5 but also on the first side surface panel 4.

Therefore, in the indoor unit of the air conditioner of the second embodiment, the pipe hole forming portion 10 having a size corresponding to the outer diameter of the pipe can be cut out to form the pipe passage port 11 having an optimum size. That is, since the indoor unit of the air conditioner of the second embodiment does not form an unnecessarily large pipe passage port 11 with respect to the outer diameter of the pipe, the design effect can be enhanced and the cutting work can be performed. Workability can also be improved.

The pipe hole forming portion 10 may be formed in a range of three or more having different thicknesses. Further, the pipe hole forming portion 10 may have a configuration having different surface textures for different ranges. This is to improve the workability of the cutting work by allowing the operator to visually recognize the portion of the pipe hole forming portion 10.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the configuration of the above-described embodiments. For example, in the first and second embodiments, the piping hole forming portion 10 is formed on the inner surface of the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7. However, the configuration may be formed in at least one of the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7. Further, the piping hole forming portion 10 is not limited to the configuration provided in the first side surface panel 4, the first lower surface panel 5, the second side surface panel 6, and the second lower surface panel 7. In short, it should be added that the gist (technical scope) of the present invention also includes various modifications, applications, and uses made by those skilled in the art as necessary.

1 housing, 2 back case, 3 front case, 4 first side panel, 5 first bottom panel, 6 second side panel, 7 second bottom panel, 8, 9 L-shaped cover, 8a, 9a mounting part, 8b, 9b ribs, 10 piping hole forming part, 10a first piping hole forming part, 10b second piping hole forming part, 11 piping passage, 12 outer edge part, 13 surface texture, 14 L-shaped cover, 14a notched groove part , 20 pipes, 30 outlets, 100 indoor units, 200 mold structures, 201 cabins, 202 cores, 202a protrusion pins, 203 outer slide molds, 204 angular pins, 205 inner slide molds.

Claims (4)

An indoor unit of an air conditioner having a piping hole forming portion for forming a piping passage in a housing forming an outer shell.
The housing has an L-shaped cover molded from a single resin material.
The pipe hole forming portion is formed in a range formed to be thinner than the surrounding plate thickness on each surface of the L-shaped cover with the bent portion as a boundary .
At least one of the piping hole forming portions includes a first piping hole forming portion, a second piping hole forming portion formed adjacent to the outside of the first piping hole forming portion, and a second piping hole forming portion formed within the range. Have and
An indoor unit of an air conditioner in which the plate thickness of the first piping hole forming portion is different from the plate thickness of the second piping hole forming portion. The indoor unit of the air conditioner according to claim 1, wherein the piping hole forming portion is formed on the inner surface side of the housing. The indoor unit of an air conditioner according to claim 1 or 2, wherein the pipe hole forming portion has a surface texture different from that of the surrounding surface. The housing has a box-shaped shape, and forms a first side surface panel forming a lower end portion of one side surface, a first lower surface panel forming one end portion of the lower surface, and a second lower end portion forming the other side surface. A side panel and a second lower surface panel forming the other end of the lower surface are provided.
The L-shaped cover is composed of a combination of the first side surface panel and the first lower surface panel, and a combination of the second side surface panel and the second lower surface panel.
Any one of claims 1 to 3 , wherein the pipe hole forming portion is formed on at least one of the first side surface panel and the first lower surface panel, and the second side surface panel and the second lower surface panel. The indoor unit of the air conditioner described in the section.

Images