JP6419301B2 - Indoor unit and refrigeration cycle equipment - Google Patents

Description

  The present invention relates to an indoor unit of a refrigeration cycle apparatus such as an air conditioner.

  In a refrigeration cycle apparatus such as an air conditioner, for example, there is a ceiling cassette type indoor unit in which a suction port for sucking air from a room and a blower port for blowing air into the room are exposed in the room and the main body portion is embedded in the ceiling. .

  The conventional ceiling cassette type indoor unit is fixed to the board which is the bottom surface of the box having an opening in the direction of the ceiling with a screw on the outer box side plate which is the side of the box having an opening in the direction of the ceiling, It constitutes a box (housing) that becomes a main unit. Conventionally, in the main unit, the outer box side plate is generally arranged and assembled on the inner side (inner peripheral surface side) of the substrate (see, for example, Patent Document 1).

Registered Utility Model No. 2532504

  For example, when the outer box side face is placed inside the board as in the case of the main unit of a conventional indoor unit, positioning is performed when the board and outer box side face are screwed and fixed during assembly. It was difficult to do.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an indoor unit that can be easily positioned.

An indoor unit according to the present invention includes a main unit that is a housing that houses at least a fan and opens on a lower surface side when installed, and the main unit is a plate that becomes an upper surface of the main unit when installed. There is a board that is formed along the periphery with a rising portion extending in the direction that becomes the indoor side when installed vertically on the upper surface, and a plate that is one or more side surfaces of the main unit, between the side surfaces A latching portion sandwiching the rising portion is formed, and the side surface has an outer box side plate positioned outside the rising portion, and the height of the locking portion from the branch portion between the locking portion and the side surface is length, rather short than the length in the height direction of the side surface, the outer box side plate has a threaded hole for fixing, latching portion is formed on both sides of the threaded hole with the outer box side plate, screw holes And the distance d between the engagement portion and the engagement portion is a distance c between the screw hole and the end of the side surface of 1. Te, in which a position satisfying the d / c ≧ 0.5.

  Moreover, the refrigeration cycle apparatus according to the present invention includes the indoor unit described above and an outdoor unit that supplies heat to the indoor unit side.

  According to the present invention, the outer box side plate has the locking portion and is assembled and positioned from the outside of the rising portion of the substrate, so that the outer box side plate can be easily positioned. In addition, the outer box side plate can be prevented from falling down. It is possible to facilitate the assembly work. Further, by covering the outside of the substrate with the outer box side plate, the side surface of the main unit becomes substantially flat, so that the appearance can be improved.

It is a figure which shows the external appearance of the indoor unit 100 which concerns on Embodiment 1 of this invention. It is a perspective view which shows the installation state of the indoor unit 100 which concerns on Embodiment 1 of this invention. It is a figure explaining the structure of the outer case of the main body unit 1 which concerns on Embodiment 1 of this invention. It is an inclination figure which shows the state before attaching the outer box side board 20 to the board | substrate 10 which concerns on Embodiment 1 of this invention. It is an inclination figure which shows the state after attaching the outer case side board 20 to the board | substrate 10 which concerns on Embodiment 1 of this invention. It is a figure (the 1) which shows the relationship between the raising part 11 of the board | substrate 10 which concerns on Embodiment 1 of this invention, and the latching | locking part 22 of the outer case side plate 20. FIG. It is FIG. (2) which shows the relationship between the raising part 11 of the board | substrate 10 which concerns on Embodiment 1 of this invention, and the latching | locking part 22 of the outer case side plate 20. FIG. It is a figure showing the structural example of the air conditioner which concerns on Embodiment 3 of this invention.

  Hereinafter, an indoor unit according to an embodiment of the invention will be described with reference to the drawings. In the following drawings, the same reference numerals denote the same or corresponding parts, and are common to the whole text of the embodiments described below. And the form of the component represented by the whole specification is an illustration to the last, Comprising: It does not limit to the form described in the specification. In particular, the combination of the components is not limited to the combination in each embodiment, and the components described in the other embodiments can be applied to another embodiment. In addition, the upper side in the figure will be described as “upper side” and the lower side will be described as “lower side”. In addition, the vertical direction in the installed state is the height direction, and the horizontal direction is the width direction. In the drawings, the relationship between the sizes of the constituent members may be different from the actual one.

Embodiment 1 FIG.
FIG. 1 is a view showing an appearance of an indoor unit 100 according to Embodiment 1 of the present invention. In the present embodiment, as a typical example of an indoor unit, a four-way cassette type indoor unit 100 having blowout ports 3 in four directions in a format that can be embedded in a ceiling in the room will be described. The indoor unit 100 is connected to an outdoor unit 200, which will be described later, and constitutes a refrigerant circuit that circulates refrigerant and performs refrigeration, air conditioning, and the like. Here, the indoor unit 100 of an air conditioner will be described.

  As will be described later, the box-shaped main unit 1 constituting the indoor unit 100 includes, for example, a fan, a motor, an indoor heat exchanger 110 described later, and the like in an outer box (housing, outer shell) configuring the main unit 1. Built in. Further, the main unit 1 of the present embodiment is chamfered at the four corners. Due to chamfering or the like, the side surface of the main unit 1 of the present embodiment becomes ten. However, the present invention is not limited to this.

  Further, when the indoor unit 100 is attached to the ceiling, a decorative panel 2 that faces the indoor space side and serves as an exterior panel of the indoor unit 100 is attached to the lower surface of the main unit 1. A suction grill 5 that constitutes a suction port for sucking indoor air into the main body unit 1 is installed in the central portion of the decorative panel 2. Moreover, in the part used as each edge | side of the outer side, there exists the blower outlet 3 provided with the wind direction adjustment vane, respectively.

  FIG. 2 is a perspective view showing an installed state of the indoor unit 100 according to Embodiment 1 of the present invention. In the main unit 1 of the indoor unit 100 of the present embodiment, mounting bolt mounting brackets (hanging brackets) 30 are mounted on side surfaces such as inclined surfaces formed on the four corners by chamfering. Also, four installation bolts 40 are suspended from the ceiling. When the main unit 1 is installed behind the ceiling, the installation bolt mounting bracket 30 and the installation bolt 40 are fastened at arbitrary positions to fix the main unit 1. The decorative panel 2 can be attached to the main unit 1 from the indoor space side, and the indoor unit 100 can be installed on the ceiling.

  FIG. 3 is a view for explaining the configuration of the outer box of the main unit 1 according to Embodiment 1 of the present invention. As shown in FIG. 3, in the present embodiment, the substrate 10 and the outer box side plate 20 constitute an outer box. The board | substrate 10 is a board used as the upper surface (top | upper surface) of the main body unit 1 when the indoor unit 100 is installed in the ceiling side, for example. A motor or the like that rotates the fan is attached to the surface of the substrate 10 that is inside the box. A rising portion (rib) 11 is formed on the periphery of the substrate 10. The rising portion 11 is a portion that overlaps the outer box side plate 20 in order to fix the substrate 10 and the outer box side plate 20 with screws 31. In the substrate 10 of the present embodiment, one screw hole 12 is formed in the rising portion 11 corresponding to each side surface. Here, although not particularly limited, the height b of the rising portion 11 may satisfy b / a ≧ 0.1 (10%) with respect to the height a of the outer box side plate 20. However, the effect is limited even if it is too long. In particular, when the raised portion 11 is formed together with the substrate 10 by processing or the like from a single plate, the height of the raised portion 11 that can be formed is also limited.

  On the other hand, the outer box side plate 20 is a plate serving as a side surface of the main unit 1. In this embodiment, two outer box side plates 20 constituting the four side surfaces and one outer box side plate 20 constituting the two side surfaces constitute the side surface of the outer box (in FIG. Two plates constituting four side surfaces are shown). However, the number of the outer box side plates 20 constituting the side surface is not particularly limited. In the present embodiment, the outer box side plate 20 is disposed on the outer side (substrate outer peripheral side) of the rising portion 11 of the substrate 10. Therefore, the outer box side plate 20 covers the rising portion 11 of the substrate 10 from the outside.

  FIG. 4 is an inclined view showing a state before the outer box side plate 20 is assembled to the substrate 10 according to the first embodiment of the present invention. FIG. 5 is an inclined view showing a state after the outer box side plate 20 is assembled to the substrate 10 according to the first embodiment of the present invention. The outer box side plate 20 of the present embodiment has one screw hole 21 for each side surface. In the present embodiment, the outer box side plate 20 has a locking portion 22. When the outer box side plate 20 is assembled to the substrate 10, the locking portion 22 is inserted with the rising portion 11 of the substrate 10 between the flat portion (side surface portion) which is the side surface of the outer box side plate 20, etc. The outer box side plate 20 is locked in a self-supporting manner. Accordingly, the rising portion 11 is sandwiched between the locking portion 22 and the side surface portion. Here, in the main unit 1, the locking portion 22 is formed on the main side surface. The main side surfaces are four side surfaces having a long width direction different from the side surfaces formed by chamfering. In the present embodiment, the main side surface has the locking portions 22 at two locations on both sides of the screw hole 21. Although not particularly limited, the distance d between the screw hole 21 and the locking portion 22 is d / c ≧ 0.5 (50%) with respect to the distance c between the screw hole 21 and the end of the main side surface. ), The self-supporting effect can be further enhanced. Further, if the outer box side plate 20 can stand on its own, the locking portion 22 may be provided at one place or at three or more places. For example, you may make it have the latching | locking part 22 in two places with respect to the sheet | seat 20 of the outer box side. Furthermore, you may make it form the latching | locking part 22 also in side surfaces other than the main side surface.

  6 and 7 are views showing the relationship between the rising portion 11 of the substrate 10 and the locking portion 22 of the outer box side plate 20 according to the first embodiment of the present invention. In this embodiment, when the outer box side plate 20 is assembled to the substrate 10, the locking portion 22 is formed on the outer box side plate 20 so that the locking portion 22 sandwiches the rising portion 11 from the inside of the substrate 10. Yes. Further, the side surface portion of the outer box side plate 20 is sandwiched from the outside of the substrate 10 (substrate outer peripheral side). Since the locking portion 22 is located inside the substrate 10, the side portion of the outer box side plate 20 is not disposed outside the rising portion 11 of the substrate 10. For this reason, the side part of the main unit 1 can be configured with a flat surface with almost no step, and the appearance of the main unit 1 can be improved.

  Moreover, in this Embodiment, the bending part 23 bent in order to expand the edge part of the latching | locking part 22 is formed. By forming the bent portion 23 so that the end portion of the locking portion 22 is expanded, the insertion port into which the rising portion 11 is inserted between the side surface portion and the locking portion 22 is expanded. In FIG. 6 and FIG. By expanding the insertion slot, it is possible to easily insert the rising portion 11 between the side surface portion and the locking portion 22 when assembling. The folding angle and the position at which the locking portion 22 begins to be folded are not particularly limited, but depending on the folding angle and the position at which folding starts, the insertion slot may not expand or may not be effective. There is a need to.

  Furthermore, as shown in FIGS. 6 and 7, the position of the end portion of the locking portion 22 in the height direction is the position of the end portion of the locking portion 22 in the present embodiment. It is made to become higher and the latching | locking part 22 is made short. In FIG. 6 and FIG. 7, the difference is h. When the outer box side plate 20 is assembled to the substrate 10 because the locking portion 22 is short, the assembly operator performs positioning by applying the outer box side plate 20 (side surface) to the rising portion 11 of the substrate 10 from the side surface direction. Therefore, the rising portion 11 can be inserted between the side surface portion of the outer box side plate 20 and the locking portion 22. For this reason, it becomes easy for an assembly worker to perform the assembly work.

  In addition, as shown in FIG. 4, in the present embodiment, the end of the side surface portion is located at the end of the side surface portion in the height direction and the bottom surface of the substrate 10 (the bottom portion of the main unit 1). The position should be higher than the bottom. For example, an assembly worker sometimes lifts the bottom of the main unit 1 by hand during assembly. At this time, if the end portion of the side surface portion and the bottom portion of the main unit 1 are at the same or lower position, the hand may be damaged by a burr formed at the end portion of the side surface portion during processing. In order to prevent this, the end of the side surface portion is positioned higher than the bottom surface of the substrate 10 so that the end of the side surface portion does not touch the hand.

  As described above, according to the indoor unit 100 of the first embodiment, the outer box side plate 20 has the locking portion 22, and the outer box side plate 20 from the outside (board outer peripheral side) of the rising portion 11 of the substrate 10. Since the main body unit 1 is configured by assembling, the outer box side plate 20 can be easily positioned. In addition, the outer box side plate 20 can be prevented from falling. For this reason, it is possible to facilitate assembly work such as assembly. Further, by covering the outside of the substrate 10 with the outer box side plate 20, the side surface of the main unit 1 can be made substantially flat, and the appearance can be improved in design.

  Furthermore, the indoor unit 100 (main unit 1) is suspended from the ceiling by inserting the rising portion 11 of the substrate 10 between the side surface portion of the outer box side plate 20 and the locking portion 22 so as to be able to stand on its own. In this state, the substrate 10 can be supported from the lower side by the outer box side plate 20 (locking portion 22). For this reason, for example, even if the screws 31 for fixing the substrate 10 and the outer box side plate 20 are removed, the substrate 10 that has become heavy by attaching a motor or the like does not fall off.

  Further, according to the indoor unit 100 of the first embodiment, the locking portion 22 of the outer box side plate 20 is positioned inside the substrate 10, so that the locking portion 22 protrudes outside the side surface of the main unit 1. do not do. Further, since the side surface portion of the outer box side plate 20 is outside the rising portion 11 of the substrate 10, the side surface portion of the main body unit 1 can be configured with a flat surface with almost no step, and the appearance of the main body unit 1 is improved. be able to.

  Moreover, the end part of the latching | locking part 22 can be expanded by forming the bending part 23 in the latching | locking part 22, and an insertion port can be expanded. For this reason, when the assembly worker performs the assembly, the rising portion 11 can be easily inserted between the side surface portion and the locking portion 22.

Embodiment 2. FIG.
In the first embodiment described above, the latching portion 22 is formed on the outer box side plate 20 by punching a sheet metal to be the outer box side plate 20 and performing pressing or the like. However, the present invention is not limited to this. You may make it attach to a side surface. At this time, the side surface can also be a flat surface for the portion locked by the locking portion 22.

Embodiment 3 FIG.
FIG. 7 is a diagram illustrating a configuration example of an air conditioner according to Embodiment 3 of the present invention. In this embodiment, an air conditioner is shown as an example of a refrigeration cycle apparatus. In FIG. 7, the same operations as those described in FIG. 1 and the like are performed. The air conditioner in FIG. 7 connects an outdoor unit (outdoor unit) 200 and the indoor unit (indoor unit) 100 described in Embodiment 1 through a gas refrigerant pipe 300 and a liquid refrigerant pipe 400. The outdoor unit 200 includes a compressor 210, a four-way valve 220, an outdoor heat exchanger 230, and an expansion valve 240.

  The compressor 210 compresses and discharges the sucked refrigerant. Here, although not particularly limited, the compressor 210 changes the capacity of the compressor 210 (the amount of refrigerant sent out per unit time) by arbitrarily changing the operating frequency by, for example, an inverter circuit. It may be a thing. The four-way valve 220 is a valve that switches the flow of the refrigerant between, for example, a cooling operation and a heating operation.

  Outdoor heat exchanger 230 in the present embodiment performs heat exchange between the refrigerant and air (outdoor air). For example, it functions as an evaporator during heating operation, evaporating and evaporating the refrigerant. Moreover, it functions as a condenser during the cooling operation, and condenses and liquefies the refrigerant.

  An expansion valve 240 such as a throttle device (flow rate control means) decompresses the refrigerant to expand it. For example, when an electronic expansion valve is used, the opening degree is adjusted based on an instruction from a control device (not shown). The indoor heat exchanger 110 performs heat exchange between air to be air-conditioned and a refrigerant, for example. During heating operation, it functions as a condenser and condenses and liquefies the refrigerant. Moreover, it functions as an evaporator during cooling operation, evaporating and evaporating the refrigerant.

  As described above, by configuring the air conditioner, the refrigerant operation is switched by the four-way valve 220 of the outdoor unit 200, whereby the heating operation and the cooling operation can be realized.

  In the above-described embodiment, the indoor unit 100 has been described as a four-way cassette type indoor unit that blows air in four directions from the four outlets 3, but is not limited thereto. For example, the present invention can also be applied to other ceiling-embedded indoor units corresponding to two-way and three-way air flows. Further, the present invention can be applied not only to the ceiling-embedded indoor unit but also to other types of indoor units.

  In the above-described embodiment, the air conditioner has been described as an example of the refrigeration cycle apparatus. However, the present invention is not limited to this. For example, the present invention can be applied to other refrigeration cycle apparatuses such as a refrigeration apparatus and a refrigeration apparatus. Moreover, it can be applied not only to the refrigeration cycle apparatus but also to a blower, a ventilator, or the like.

  DESCRIPTION OF SYMBOLS 1 Main body unit, 2 Cosmetic panel, 3 Outlet, 5 Suction grill, 10 Substrate, 11 Standing part, 12 Screw hole, 20 Outer box side plate, 21 Screw hole, 22 Locking part, 23 Bending part, 30 Installation bolt installation Metal fitting, 31 screw, 40 installation bolt, 100, indoor unit, 110 indoor heat exchanger, 200 outdoor unit, 210 compressor, 220 four-way valve, 230 outdoor heat exchanger, 240 expansion valve, 300 gas refrigerant piping, 400 liquid refrigerant Plumbing.

Claims (5)

It has a main unit that is a housing that houses at least a fan and opens on the side that becomes the lower surface when installed.
The main unit is
A board that is an upper surface of the main unit when installed, and a substrate that is formed along the periphery with a rising portion extending in a direction perpendicular to the upper surface and extending to the indoor side when installed.
An outer box side plate that is a plate that forms one or a plurality of side surfaces of the main body unit, a locking portion that sandwiches the rising portion between the side surfaces, and the side surface is positioned outside the rising portion; Have
The length in the height direction of the locking portion from the branch portion between the side surface and the locking portion is rather shorter than the length in the height direction of the side,
The outer box side plate has a screw hole for fixing,
The locking portion is formed on both sides of the screw hole of the outer box side plate, and a distance d between the screw hole and the locking portion is a distance c between the screw hole and the end portion of the side surface of 1. On the other hand, an indoor unit in a position satisfying d / c ≧ 0.5 .   The indoor unit according to claim 1, wherein the locking portion is formed so as to support the side surface and the rising portion from the inner side of the main body unit. The indoor unit according to claim 1 or 2 , wherein a tip end portion of the locking portion is bent outward. The indoor unit according to any one of claims 1 to 3 , wherein the indoor unit is a four-way cassette type that can be embedded in a ceiling of a room and has a suction port and an outlet in four directions facing the room. The indoor unit according to any one of claims 1 to 4 ,
A refrigeration cycle apparatus comprising: an outdoor unit that supplies heat to the indoor unit side.

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