JP2009156559A - Indoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner capable of simplifying a structure and work during manufacture of the indoor unit. <P>SOLUTION: The indoor unit 10 for an air conditioner is characterized by including an indoor heat exchanger 21 having indoor air suction openings 14, 15 and a blowout opening 16 and arranged with a ventilation passage in a casing 11 composed of a front face panel 12 and a rear plate body 13, an indoor fan 22 driven by a fan motor 26, a main electrical component box 24 housed in a side part of the casing and housing a main board and a power source terminal, a display case 32 arranged in a main electrical component box neighborhood and equipped with lamps 35 displaying an operated state, a horizontal louver 23 arranged on the blowout opening 16 and adjusting a vertical direction, and a louver motor 28 arranged on one end of the horizontal louver 23 and turning the horizontal louver 23. The louver motor 28 is housed in the display case 32. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to a structure of the indoor unit and a simplified work during manufacturing.

  In an air conditioner comprising an indoor unit arranged in an air-conditioned room and an outdoor unit arranged outdoors, and these units are connected to each other by a refrigerant pipe and electrical wiring, The exchanger and the indoor crossflow fan are arranged to face each other, and an electrical component box is arranged on the side of these. In such a wiring space, for example, an electrical component such as a louver drive motor that changes the blowing direction at the blowing port is attached (for example, see Patent Document 1).

In such an indoor unit of an air conditioner, for example, the main board or the like can be made into an enclosure structure by components such as an electric component box, but the louver motor or the like is often attached to the main body alone, and the enclosure It was difficult to take the structure.
JP-A-10-110970

  However, the above technique has the following problems. That is, when the louver motor is attached to the main body alone, the screw must be tightened from the side. Therefore, the line workability at the time of manufacture is poor. Moreover, the screw which stops a louver motor needs to use the screw from which a dimension differs from the screw for stopping other parts by the restrictions of the external dimension of a louver motor. Therefore, the number of parts is large and the structure is complicated, and the manufacturing work becomes complicated.

  An indoor unit of an air conditioner according to an aspect of the present invention includes an indoor heat exchanger disposed in a ventilation path in a housing having an indoor air inlet and an outlet and configured by a front panel and a rear plate body, An indoor fan driven by a fan motor, a main electrical component box housed in a side part of the housing and housing a main board and a power supply terminal, and a display unit arranged near the main electrical component box to display an operation state A display case, a horizontal louver arranged at the air outlet for adjusting the vertical wind direction, and a louver motor arranged at one end of the horizontal louver for rotating the horizontal louver, wherein the louver motor is attached to the display case. It is stored.

  An indoor unit of an air conditioner according to an aspect of the present invention includes an indoor heat exchanger disposed in a ventilation path in a housing having an indoor air inlet and an outlet and configured by a front panel and a rear plate body, An indoor fan driven by a fan motor, a main electrical component box housed in a side part of the housing and housing a main board and a power supply terminal, and a display unit arranged near the main electrical component box to display an operation state A display case, a horizontal louver disposed at the air outlet for adjusting the vertical wind direction, and a louver motor disposed at one end of the horizontal louver to rotate the horizontal louver, and the louver motor and the display substrate The accommodated display case is attached to the main electrical component box body.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to simplify the structure of an indoor unit, and the operation | work at the time of manufacture.

[First Embodiment]
Hereinafter, an indoor unit 10 of an air conditioner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10. In each figure, the configuration is appropriately omitted and schematically shown. FIG. 1 is a perspective view of an indoor unit 10 of an air conditioner, FIG. 2 is an exploded perspective view of the indoor unit 10, and FIG. 3 is an explanatory diagram showing an internal structure of the indoor unit 10 with a front panel 12 removed. FIG. 4 is a front view showing the internal structure, and FIG. 5 is a bottom view showing the internal structure.

  As shown in FIGS. 1 and 2, the indoor unit 10 has a horizontally long shape that has a longer width dimension in the left-right direction than the vertical dimension, and includes a casing 11 that forms an outer shell. The housing 11 includes a front panel 12 and a rear plate body 13.

  The front panel 12 is bent in a gentle circular arc shape on the front side, and includes upper and lower surface portions and left and right side surface portions that protrude in the back direction on the peripheral surface portion, and is open to the back side. A front suction port 14 is provided in the front portion of the front panel 12. Moreover, the upper surface part of the front panel 12 is a horizontal piece part, and the upper inlet 15 is provided. Further, an air outlet 16 is formed in the lower part of the front panel 12.

  The rear plate body 13 includes a rear surface portion, left and right side surface portions 13a. 13b and upper and lower surface portions 13c and 13d. The left and right side surfaces 13a. The left and right side surface portions 12a and 12b and the upper and lower surface portions 12c and 12d of the front panel 12 are detachably fitted to the 13b and the upper and lower surface portions 13c and 13d.

  Accordingly, the front side of the rear plate body 13 is open, and the front panel 12 having the back side opened is fitted into the box-shaped casing 11 in which a space chamber is formed.

  As shown in FIG. 3, an indoor heat exchanger 21 formed in an inverted V shape in a side view is disposed in the housing 11. The indoor heat exchanger 21 includes a front indoor heat exchanger 21 a that faces the suction port 14 and a rear indoor heat exchanger 21 b that faces the upper suction port 15. The front indoor heat exchanger 21a is formed in an arc shape in a side view, like the front side shape of the front panel 12. A cross flow fan 22 is interposed in the space between the front indoor heat exchanger 21a and the rear indoor heat exchanger 21b.

  Further, a horizontal louver 23 for setting the wind direction of the blown air is provided at a portion corresponding to the air outlet 16 at the lower part on the front side. The horizontal louver 23 is fitted into the outlet 16.

  As shown in FIGS. 4 to 6, the main electrical component box 24 is attached to the rear plate body 13 by an appropriate means at a side portion of the indoor heat exchanger 21.

  As shown in FIG. 9, in the main electrical component box 24, a power transformer or a capacitor that is electrically connected to the main board storage portion 24a on one side, though not specifically shown, via a commercial power source and a power cord. The electronic parts such as the display case 32, the louver motor 28, and the fan motor 26, which will be described later, and the electronic parts that are electrically connected via the low-electric-component lead wires 25, and the main board are accommodated.

  A power cord is extended from the power cord connecting terminal portion 24 b of the main electrical component box 24. Further, lead wires 25 (shown in FIG. 4 and FIG. 5) connected to weak electric components such as the fan motor 26 and louver motor 28 of the cross flow fan 22 are extended from the lower side of the main electric component box 24.

  A power cord, a lead wire 25, and the like extending from the main electrical component box 24 are bundled and attached and fixed to a predetermined portion in the middle using a cord clamp as a fixture. The power cord is extended from the housing 11.

  Further, as shown in FIG. 6, a fan motor 26 that drives the cross-flow fan 22 is attached to the side surface of the main electrical component box 24 on the indoor heat exchanger 21 side via a fan motor cover 27 that covers the outer periphery. It is done. A rotation shaft 26 a of the fan motor 26 protrudes toward the indoor heat exchanger 21 and is connected to the cross flow fan 22.

  Further, a display accommodating portion 13 f for accommodating the display case 32 is provided on the front lower surface side of the lower surface portion 13 d of the rear plate body 13. The display accommodating portion 13f is integrally formed with a mounting piece 13g to which the locking piece 32f of the display case 32 is screwed and a protrusion engaging portion 13h into which the fixing protrusion 32e of the display case 32 is inserted and fitted.

  That is, the rear plate lower surface portion 13d has two plate-like members that integrally extend toward the front to form side surfaces, and the bearing portions 13e that receive the connecting shafts 28a of the louver motor 28 respectively on the two plate-like members. Further, a protrusion engaging portion 13h into which the fixing protrusion 32e of the display case 32 is inserted and fitted is formed. The fixing protrusion 32e is inserted and fixed in the width direction of the main body, and the screw member in the locking piece is inserted and fixed in the thickness direction.

  In other words, the display case 32 is electrically connected to the electrical box 24 by lead wires, and is attached by engagement and screw fixing via various members integrally formed at the lower portion of the main body 13.

  A display case 32 connected to a lead wire 25 extending under the main electrical component box 24 is disposed in the display housing portion 13f. The display case 32 shown in FIGS. 10 and 11 includes a display case 32 including a case main body 32a and a front cover 32b that covers the front side of the display case 32, and a display substrate is provided inside the display case 32. 33 and various electronic components 34 mounted on the display substrate 33 and lamps 35 (display unit) such as LEDs indicating an operation state.

  Furthermore, a louver motor 28 that drives the horizontal louver 23 is housed in one end of the display case 32 that is disposed on the horizontal louver 23 side when attached to the indoor unit 10. The louver motor 28 is disposed in a recess 32c formed on one end side of the case body 32a, and is disposed between the front cover 32b. The output shaft of the louver motor 28 is led out of the display case 32 through the hole 32 d of the display case 32 and is connected to the horizontal louver 23. The connecting shaft 28a of the horizontal louver 23 is pivotally supported by a bearing portion 13e formed integrally with the rear plate lower side surface portion 13b.

  The lead wire 25 for the louver motor 28 is bundled together with the lead wire 25 for the display case 32 and guided into the display case 32.

  On one end side of the case main body 32a and the display case 32 front cover 32b, a fixing protrusion 32e for fixing to the display accommodating portion 13f is provided. A locking piece 32f having a screw hole for fixing the case is provided on the other end side.

  As shown in FIG. *, The front cover 32b covers the front surface with each part built in the display case main body 32a, and the main body side and the cover-side fixing protrusions are fitted and integrated. The display case 32 is fixed to the display accommodating portion 13f by fitting the fixing protrusion 32e to the protrusion engaging portion 13h and screwing the locking piece 32f.

  When the front cover 32b is fixed to the case main body 32a, a recess 32c having a shape along the outer shape of the louver motor 28 is formed and a hole 32d through which the connecting shaft 28a is inserted is formed in the recess 32c. The louver motor 28 is disposed, the connecting shaft 28a is led out of the display case 32, and the louver motor 28 is sandwiched between the case body 32a and the front cover 32b, so that the louver motor 28 is fixed to a predetermined portion of the display case 32. . Therefore, a fixing member such as a screw for fixing the louver motor 28 to the display case 32 is not used here.

  That is, in the line work at the time of manufacture, as shown in FIG. 6, the fan motor 26 is electrically and mechanically connected and fixed to the side portion of the main electrical component box 24 in advance, and the louver motor 28 is connected to the lower lead wire 25. A state in which the indoor heat exchanger 21, the fan, and the horizontal louver 23 are fixed to the electrical component set 36 in a state where the display case 32 in which the electronic component 34, the lamps 35, and the like are accommodated is electrically connected by the lead wire 25. By being attached to one end side of the rear plate body 13, the fan motor 26 and the louver motor 28 are connected to the fan and the horizontal louver 23, respectively, and the display case 32 is disposed on the lower front surface near the louver motor 28. .

  In addition, as shown in FIG. 2, the operation of installing the indoor unit 10 at a predetermined position on the wall surface of the air-conditioned room is performed by first attaching an attached installation plate (not shown) on the wall surface of the air-conditioned room. Then, the rear plate body 13 is attached to the installation plate. At this time, the front panel 12 is removed from the rear plate body 13. When the rear plate main body 13 is attached, the front panel 12 is attached so that the front panel 12 covers the rear plate main body 13 by fitting the upper lower surface portion and both side surface portions of the front panel 12 into the upper lower surface portion and the upper side surface portion of the rear plate main body 13.

  In the indoor unit 10 configured as described above, the refrigeration cycle operation with respect to the indoor heat exchanger 21 is performed, and the cross-flow fan 22 is rotationally driven by the fan motor 26, whereby the air to be air-conditioned indoors flows into the front inlet 14 and the upper part. It is sucked into the housing 11 from the suction port 15 and passes through the indoor heat exchanger 21 to exchange heat. The heat exchange air after the heat exchange is blown out from the blowout port 16 into the air-conditioned room in a predetermined direction corresponding to the angle of the horizontal louver 23.

  According to the indoor unit 10 according to the present embodiment, the following effects can be obtained.

  Since the louver motor 28 is accommodated in the display case 32, the screws for fixing the louver motor 28 are reduced, and the assemblability is improved. Therefore, the cost can be reduced by reducing the number of parts, and the assembly work can be simplified to reduce the number of man-hours.

  Further, since the louver motor 28 can be bundled together with the other lead wires 25 by accommodating the louver motor 28 in the display case 32, the lead wires 25 can be easily processed and the disconnection of the lead wires 25 can be prevented. it can. That is, when the louver motor 28 is attached alone, the lead wire 25 of the louver motor 28 must be processed in the main assembly, so the process of handling the thin lead wire 25 becomes complicated. Since it can be bundled together, the main installation work can be simplified.

  By using a flame retardant material for the display case 32, it is possible to prevent the spread of fire even if ignition is generated from the louver motor 28.

  By storing the louver motor 28 in the display case 32, outside air can be shut off and condensation can be prevented.

  Furthermore, by attaching the display case 32 to the main main electrical component box 24 main body, electrical related parts can be concentrated in one place, assembly work can be performed in a lump and stored in the indoor unit 10 main body, thereby improving productivity. To do. It is easy to perform electrical inspections.

  Furthermore, the fan motor 26 that drives the fan housed in the ventilation path of the indoor unit 10 that is arranged to extend from the end of the indoor heat exchanger 21 is electrically connected to the fan motor cover 27 that covers the outer periphery thereof. By attaching to the side of the bookcase box, all the electrical related main parts can be attached to the electrical department bookcase, and the assemblability at the time of manufacture can be improved.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions may be formed by appropriately combining a plurality of components of the above-described embodiment. For example, the constituent elements of the embodiments may be deleted as appropriate, and the constituent elements over different embodiments may be combined.

The perspective view which shows the external appearance of the indoor unit concerning one Embodiment of this invention. The exploded perspective view of the indoor unit. Explanatory drawing which shows the internal structure in the state which removed the front panel of the indoor unit. The front view which shows the state which removed the front panel of the indoor unit. The bottom view which shows the state which removed the front panel of the indoor unit. The perspective view which shows the state in the assembly process of the indoor unit. The perspective view which shows the attachment state of the display case of the indoor unit. The perspective view which shows the attachment state of the display case. The perspective view which shows the electrical component box concerning the embodiment. The perspective view which shows the display case concerning the embodiment. The perspective view which shows the state which removed the front cover of the display case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Indoor unit, 11 ... Housing | casing, 12 ... Front panel, 13 ... Rear plate main body, 14, 15 ... Suction inlet, 13f ... Display accommodating part, 16 ... Air outlet, 21 ... Indoor heat exchanger, 22 ... Cross-flow fan (Indoor fan), 23 ... horizontal louver, 24 ... main electrical component box, 25 ... weak electrical component lead wire,
25 ... Lead wire, 26 ... Fan motor, 28 ... Louver motor, 32 ... Display case,
35 ... lamps, 36 ... a set of electrical components.

Claims (2)

An indoor heat exchanger disposed in a ventilation path in a housing having an indoor air inlet and a blowout outlet and configured by a front panel and a rear plate body, an indoor fan driven by a fan motor, and the side of the housing A main electrical component box that houses the main board and the power supply terminal, a display case that is disposed near the main electrical component box and displays an operating state, and a vertical wind direction that is disposed at the outlet. A horizontal louver that adjusts the louver, and a louver motor that is disposed at one end of the horizontal louver and rotates the horizontal louver,
The indoor unit of an air conditioner, wherein the louver motor is housed in the display case. An indoor heat exchanger disposed in a ventilation path in a housing having an indoor air inlet and a blowout outlet and configured by a front panel and a rear plate body, an indoor fan driven by a fan motor, and the side of the housing A main electrical component box that houses the main board and the power supply terminal, a display case that is disposed near the main electrical component box and displays an operating state, and a vertical wind direction that is disposed at the outlet. A horizontal louver that adjusts the louver, and a louver motor that is disposed at one end of the horizontal louver and rotates the horizontal louver,
An indoor unit of an air conditioner, wherein the display case containing the louver motor and the display substrate is attached to the main electrical component box body.

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