JP2011075158A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner which receives a remote controller operation signal over a wide range from the front side of an indoor unit to a lower side without degrading its design. <P>SOLUTION: This air conditioner has the indoor unit 1 in which a blower fan 4 and a heat exchanger 5 are disposed between a base 2 and a housing 3, a filter 8 is disposed at an upstream side of the heat exchanger 5, and a receiving element 53 for receiving the remote controller operation signal is disposed on the base 2. The housing 3 is provided with a receiving section 20 at a position corresponding to the receiving element 53, the receiving section 20 is provided with a recessed section 23 having a roughly-triangular cross-section, and a base face 23a of the recessed section 23 is positioned at a front part of the receiving element 53. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly to the structure of a remote control receiver in an indoor unit of an air conditioner.

The indoor unit of the air conditioner is provided with a receiver including an infrared receiving element for receiving a signal transmitted from the remote controller so that the operation can be performed by the remote controller.
In consideration of the fact that indoor occupants usually operate the remote control from a position obliquely below the front of the indoor unit, this receiver is designed to ensure a reception distance when operated by the remote control. It is arranged to face the front of the unit.

  In addition, for example, when a front panel that can be opened and closed is provided, depending on the shape of the indoor unit and other device arrangement restrictions, the receiver may have to be placed on the bottom surface of the indoor unit or in the vicinity thereof, In such a case, there is an air conditioner that ensures reception performance by changing the shape of the first casing (display panel) provided on the front side of the receiver (see, for example, Patent Document 1).

JP 2006-132872 (page 9-10, FIG. 10)

  In the air conditioner of Patent Document 1, when the bottom surface of the indoor unit is horizontal or a surface close to the wall on which the indoor unit is installed due to restrictions such as design and other arrangement of the product, The receiver placed on the bottom of the unit increases the distance of the resin display panel that must transmit infrared rays transmitted from the remote control, attenuates the signal, and narrows the vertical reception range. There was a problem.

  The present invention has been made to solve the above-described problems, and provides an air conditioner that can receive a remote control operation signal over a wide range from the front side to the lower side of an indoor unit without impairing the design. It is intended to provide.

  In the air conditioner according to the present invention, a blower fan and a heat exchanger are installed between a base and a casing, a filter is installed on the upstream side of the heat exchanger, and a remote control operation signal is sent to the base. A receiving unit is provided at a position corresponding to the receiving element of the housing, and a recess having a substantially triangular cross section is provided in the receiving unit, and the bottom of the recess The surface is positioned in front of the receiving element.

  According to the present invention, the receiving unit provided in the resin casing (or another part) of the indoor unit is provided with the concave portion having a substantially triangular cross section, and the bottom side surface thereof is positioned in front of the receiving element. Since the transmission distance is shortened, the receiving element can receive the remote control operation signal over a wide range from the lower front side to the lower side of the indoor unit without attenuating, so the remote control operation range can be greatly expanded. And an easy-to-use air conditioner can be obtained.

1 is an external perspective view of an air conditioner according to Embodiment 1 of the present invention. It is a longitudinal cross-sectional view of FIG. FIG. 2 is an exploded perspective view of FIG. 1. It is an enlarged view of the principal part of the housing | casing of FIG. FIG. 3 is an exploded perspective view of the electrical component box of FIG. 2. It is explanatory drawing of the procedure which attaches an electrical component box to a base. It is explanatory drawing of the procedure which attaches an electrical component box to a base. It is explanatory drawing of the procedure which attaches a receiver to the power wire guide component of an electrical component box. It is a disassembled perspective view of the receiver of FIG. It is a side view which shows the state which assembled the receiving board of FIG. 9, a transmitting board, and board | substrate coupling | bond part. It is a perspective view of FIG. It is a side view which shows the assembly state of FIG. It is explanatory drawing which shows the state which built the electrical equipment box in the base and removed the housing | casing. It is explanatory drawing which shows the positional relationship of a receiving part cover and a receiving element. It is explanatory drawing which shows the state of the remote control operation signal which permeate | transmits the receiving part cover of FIG. It is explanatory drawing of the principal part of the indoor unit of the air conditioner which concerns on Embodiment 2 of this invention.

[Embodiment 1]
As shown in FIGS. 1 to 4, the indoor unit 1 of an air conditioner according to Embodiment 1 of the present invention includes a base 2 and a housing 3 that covers the front surface from the upper surface of the base 2. Yes. A blower fan 4 rotatably supported by the base 2 is disposed between the two, and, for example, a fin tube type heat exchange is provided on the upstream side of the blower fan 4 so as to surround the blower fan 4. A vessel 5 is arranged, and a drain pan unit 6 having a flap is installed at the lower end thereof.

  Reference numeral 7 denotes an indoor air suction port provided on the upper surface of the housing 3, and a filter 8 having an automatic filter cleaning unit 9 from the downstream side (upstream side of the heat exchanger 5) to the upper front side inside of the housing 3. Is provided. Reference numeral 10 denotes a dust box installed at the lower end of the filter 8. Reference numeral 11 denotes a display device unit which is disposed on the front surface side of the housing 3 and is fixed to the drain pan unit 6 and the automatic filter cleaning unit 9. The front surface side of the housing 3 including the display device unit 11 can be opened and closed and removed. A front design panel 12 is provided.

  Reference numeral 13 denotes an air passage provided on the downstream side of the blower fan 4, and reference numeral 14 denotes an air outlet that communicates with the air passage 13 and blows out cold air or hot air that is conditioned air into the room. Reference numeral 30 denotes an electrical component box on which a receiving element to be described later is mounted and fixed to the base 2.

  Reference numeral 20 denotes a receiving unit that receives a remote control operation signal. The receiving unit is provided on one side of the lower part of the front side of the housing 3 and includes an opening 21 in which a receiving element mounted on the receiver of the electrical component box 30 is positioned, and infrared rays. The receiving portion cover 22 is made of a transparent resin and closes the opening portion 21, and the receiving portion cover 22 has a recess portion 23 through which a remote control operation signal is transmitted, and locking claws 22 a and 22 b provided on the back surface are the opening portion 21. It is attached to the attachment holes 21a and 21b provided at the top and bottom of the detachable attachment.

In the air conditioner provided with the indoor unit 1 as described above, when the remote controller is operated, the operation signal is received by the receiving element of the receiving unit 20, and the air conditioner starts operation. Then, the room air is sucked from the suction port 7 by the rotation of the blower fan 4, and the air from which dust and the like are removed by passing through the filter 8 is air-conditioned to cold air or warm air by passing through the heat exchanger 5, The air is blown into the room through the air outlet 13 through the air outlet 14.
Then, dust or the like adhering to the filter 8 is removed by the filter automatic cleaning unit 9 and dropped and accumulated in the dust box 10.

  Next, the receiver and its arrangement will be described with reference to FIGS. As shown in FIG. 5, the electrical component box 30 is integrally fixed to the board holding component assembly 31 including an electronic board for controlling the operation of the air conditioner, and the board holding component assembly 31 by screws 60. Power line guide component 41.

  As shown in FIGS. 6 and 7, the electrical box 30 has a locking portion 32 provided in the board holding component assembly 31 locked in a locking hole 15 provided in the base 2. The fitting piece 42 provided on the guide component 41 is fitted and locked in the fitting groove 16 of the base 2. Further, the fixing portion 43 provided in the power line guide component 41 is fixed by screws in the screw holes 18 provided in the fan motor holding portion 17 fixed to the base 2 by screws, and the electrical component box 30 has these three points. It is fixed to the base 2.

Further, as shown in FIG. 8, the locking claw 51 of the receiver 50 is locked and attached to the locking hole 44 provided in the power line guide portion 41 of the electrical component box 30.
As shown in FIG. 9, the receiver 50 includes a receiving substrate 52 on which a receiving element 53 is mounted, a transmitting substrate 54, a substrate coupling component 55, a body portion 56a, and a lid portion 56b that is folded back via a hinge portion 56c. The board holding component 56 is made of.

  As shown in FIGS. 10 and 11, the board coupling component 55 is fixed with the latching claws 55 a being latched in the latching holes 54 a of the transmission board 54, and the board coupling component 55 is provided with a latch. The receiving board 52 is temporarily fixed to the board coupling component 55 by the piece 55b engaging with the surface of the receiving board 52 and the protrusion 55c fitting into the notch 52a of the receiving board 52.

  As shown in FIG. 12, the reception board 52, the transmission board 54, and the board coupling component 55 integrated in this way are installed on the main body part 56a of the board holding part 56, and the lid part 56b is attached by the hinge part 56c. It turns around and surrounds them, and is held between holding parts 56d and 56e provided on the main body part 56a and the lid part 56b. At this time, the receiving claw 56g provided on the lid portion 56b is engaged with the engaging portion 56f provided on the main body portion 56a, so that the receiving substrate 52, the transmitting substrate 54, and the substrate coupling component 55 are connected to the substrate holding component 56. It is securely held and fixed.

  The electrical component box 30 in which the board holding component assembly 31 and the power line guide component 41 are integrally coupled as described above is fixed to one side of the base 2 as shown in FIGS. On top (front side), the housing 3 is mounted. At this time, the receiving element 53 provided on the power line guide component 41 of the electrical component box 30 is connected to the back side of the recess 23 (described later) of the receiver cover 22 via the opening 21 in the receiving unit 20 of the housing 3 ( Located behind).

  FIG. 14 is a schematic diagram showing the positional relationship between the receiving unit cover 22 and the receiving element 53. A part of the receiver cover 22 is provided with a concave portion 23 having a substantially triangular cross section with the front side (upper portion) as the apex angle and the rear side (lower portion) serving as a base (hereinafter referred to as a base surface 23a). The receiving element 53 is located behind (inner side) the bottom surface 23a of 23.

  The remote control operation signal always passes through the resin receiving portion cover 22 before reaching the receiving element 53. In this case, the remote control operation signal is attenuated as the distance passing through the resin material (receiving unit cover 22) increases. Therefore, in order to expand the range in which the remote controller can be operated, it is necessary to shorten the distance that passes through the resin material.

FIG. 15 is an explanatory diagram showing a reception range of the reception element 53 as viewed from the right side of the reception unit 20. The distance through which the remote control operation signal S ₁ from the front of the indoor unit 1 passes through the receiver cover 22 (resin material) is A, and the distance through which the remote control operation signal from the lower part of the indoor unit 1 passes through the resin material is B, intermediate The distance through which the remote control operation signal from the position passes through the resin material is C.

  This is because the concave portion 23 having a substantially triangular cross section is provided on the front surface side of the receiving element 53 of the receiving portion cover 22, and the transmission distance A of the resin material when the remote control is operated from the front of the indoor unit 1. Accordingly, the remote control operable range can be expanded to the front of the indoor unit 1.

  Here, the range of D in FIG. 15 indicates a range in which the receiving element 53 receives a remote control operation signal from the front of the indoor unit 1, and the transmission distance of the resin material in this range is substantially equal to A. The range of E is a range in which the receiving element 53 receives a remote control operation signal from the lower part of the indoor unit 1, and in this range, the receiver cover 22 (resin material) is substantially vertical to the remote control operation signal. Since it is configured, the transmission distances B and C of the resin material become short.

  Thus, in the present invention, since the distance through which the remote control operation signal from the front or lower part of the indoor unit 1 passes through the resin material is short, the receiving element 53 reliably receives the remote control operation signal from any direction. be able to.

[Embodiment 2]
FIG. 16 is an explanatory diagram of a main part of the indoor unit 1 of the air conditioner according to Embodiment 2 of the present invention. In the present embodiment, the bottom surface 23a of the recess 23 provided in the receiver cover 22 is thinned by inclining θ ° (12 ° in the embodiment) forward with respect to the vertical surface.
With this configuration, the bottom surface 23a of the recess 23 is substantially perpendicular to the remote control operation signal from a distance corresponding to about 7 m ahead of the indoor unit 1 in the installed state, and transmits the resin material of the remote control operation signal. The distance to be performed can be further shortened. Other operations and effects are almost the same as those in the first embodiment.

In the above description, a case is shown in which the receiving unit 20 is provided with the receiving unit cover 22 made of an infrared transmitting resin and having the concave portion 23 having a substantially triangular cross section through which the remote control operation signal is transmitted. You may directly provide the recessed part with a substantially triangular cross-section which permeate | transmits.
However, if it does in this way, since the housing | casing 3 is a large sized molded product, resin may not be filled in the thin part of a recessed part, and there exists a possibility of causing a molding defect.

Further, in the case of such a configuration, the entire casing must be molded with an infrared transmitting resin that hardly attenuates the remote control operation signal. However, the infrared transmitting resin has a high material cost, which is not preferable because it greatly increases the cost.
In the present invention, since only the receiver cover 22 provided with the recess 23 through which the remote control operation signal is transmitted is formed as a separate part from the casing 3 by the infrared transmitting resin, there is no possibility that the above-described problem occurs. . Further, by using the receiver cover 22 as a separate component from the housing 3, it is easy to harmonize with the front design panel 12, and the design can be improved.

  DESCRIPTION OF SYMBOLS 1 Indoor unit, 2 bases, 3 housing | casing, 4 ventilation fan, 5 heat exchanger, 7 suction inlet, 8 filter, 9 filter automatic cleaning unit, 12 front design panel, 14 outlet, 20 receiving part, 22 receiving part Cover, 23 Triangular recess, 23a Bottom side surface, 30 Electrical box, 50 Receiver, 52 Receiver board, 53 Receiver element, 54 Transmitter board, 55 Substrate coupling part, 56 Substrate holding part

Claims (3)

A blower fan and a heat exchanger were installed between the base and the casing, a filter was installed on the upstream side of the heat exchanger, and a receiving element for receiving a remote control operation signal was installed on the base Has an indoor unit,
A receiving portion is provided at a position corresponding to the receiving element of the casing, a concave portion having a substantially triangular cross section is provided in the receiving portion, and a bottom surface of the concave portion is positioned in front of the receiving element. Air conditioner to do.   The receiving portion provided in the housing is provided with an opening at a position corresponding to the receiving element of the housing, and the opening is made of an infrared transmitting resin and provided with the concave portion having a substantially triangular cross section. The air conditioner according to claim 1, wherein the air conditioner is configured to be closed by a cover.   The air conditioner according to claim 1 or 2, wherein a bottom surface of a concave portion having a substantially triangular cross section provided in the receiving unit is inclined by θ ° forward with respect to a vertical surface.

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