JP4259956B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including an electrical box having a main board and a sub board.

Generally, in this type of air conditioner, an electrical equipment box containing a heat exchanger, a blower, and a control board such as a printed circuit board is provided inside the housing as the air conditioner body, and the electrical equipment box is An electrical box body having a main board disposed therein, and a lid so as to cover an opening provided on the front surface of the electrical box body, and the lid has a board surface on an outer edge of the main board. A configuration is known that includes an opposing sub-board and an operation unit connected to the sub-board (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 7-12368

  However, in the above-described prior art, the lid having the sub-board and the operation unit connected to the sub-board is fixed to the opening of the electric box main body by screwing or a one-touch clip. There is a concern that an excessive external force acts on the main substrate or the sub-substrate of the lid and the substrates are deformed.

  Accordingly, an object of the present invention is to provide an air conditioner capable of preventing an excessive external force from acting on the main board of the electrical equipment box body or the sub board of the lid when the electrical equipment box is assembled. .

The present invention relates to a built-in type air conditioner in which the casing itself is embedded in a mounting wall surface, and the air conditioner includes a heat exchanger, a blower, and an electrical box inside the casing. The box has an opening on one side and an electric box main body in which the main board is disposed inside, and is provided so as to cover the opening of the electric box main body, and the board surface faces the outer edge of the main board A sub-board and a lid having an operation unit connected to the sub-board, and a unit cover having a window for covering the operation unit of the lid while covering the electrical box main body and being fixed to the housing ,
The electrical box body is provided with positioning pins,
The lid body is configured by superposing an upper lid plate having a packing and a lower lid plate having the sub-board, and each lid body is provided with a ventilation portion for heat dissipation and is associated with the positioning pin. A pin hole is provided, the positioning pin and the pin hole are engaged and provided in contact with the opening of the electrical box body, and the unit cover is fixed to the housing, The lid is pressed against the electrical box main body by the packing interposed between the unit cover and the unit cover.

  In the present invention, in an air conditioner including a heat exchanger, a blower, and an electrical box inside a housing, the electrical box has an opening on one side and an electrical box body having a main board disposed therein. A lid that is provided so as to cover the opening of the electrical box body, and that has a substrate surface facing the outer edge of the main substrate, and an operation unit connected to the sub substrate, and an operation unit of the lid And a unit cover provided with a window that faces the cover, and a packing is interposed between the unit cover and the lid body, so that the opening of the electrical box body is covered with the lid body, Since the packing is compressed and the lid is pressed toward the electrical box body when the unit cover is fixed to the unit cover, excessive external force acts on the main board in the electrical box body and the sub-board of the lid. Can prevent the deformation of the substrate That.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In FIG. 1, reference numeral 1 denotes an indoor wall plate, and a mounting opening 2 is formed at a predetermined position of the wall plate 1. An air conditioner 3 according to an embodiment of the present invention is attached to the inner portion of the attachment opening 2.

  As shown in FIG. 1, the air conditioner 3 includes a housing 3A serving as an outer frame. Inside the housing 3A, a heat exchanger 4 bent in a substantially square shape is disposed. The heat exchanger 4 is supplied with refrigerant from an outdoor unit (not shown) in which a refrigerant compressor, a four-way valve, an outdoor heat exchanger, and a decompression device are incorporated. A blower 6 made of, for example, a cross flow fan or the like is disposed in the vicinity of the outflow side.

  A suction grill 7 is disposed on the front surface of the housing 3 </ b> A, and a filter 8 is disposed inside the suction grill 7. The air in the chamber to be conditioned sucked from the suction port 7A of the suction grille 7 is removed by the filter 8 and then reaches the heat exchanger 4 where the air is conditioned and sucked through the blower 6. The air is blown into the room to be conditioned from the air outlet 7B formed at the lower part of the grill 7.

  A drain pan 11 is disposed below the heat exchanger 4, and drain generated on the surface of the heat exchanger 4 is dropped into the drain pan 11.

  FIG. 2 is a front view of the air conditioner 3. The heat exchanger 4 is exposed on the front surface of the air conditioner 3, and an electrical box 20 is disposed on the right side of the heat exchanger 4 in the figure so as to extend almost fully in the longitudinal direction of the housing 3A. Yes.

  A control board (not shown) is disposed in the electrical box 20, and a motor control line of the blower 6 and a control line of an electromagnetic valve attached to the heat exchanger 4 are connected to the control board. . 21 is a unit cover.

  FIG. 3 is a vertical cross-sectional view of the electrical box 20, and the electrical box 20 is fixed to the inside of the housing 3A via a stopper (not shown). A box-shaped electrical box body 22 provided with an opening 22C, and a lid 23 that covers the opening 22C of the electrical box body 22 from the front are configured.

  A pair of main boards 24 constituting a control board are fixed inside the electrical box main body 22 by being inserted into the electrical box main body 22 so as to face each other. The lid body 23 is configured to be addressed to and cover the opening portion 22C of the electrical box main body 22.

  In the above-described stage, the upper end portion 23A and the lower end portion 23B of the lid body 23 are in light contact with the receiving portions 22A and 22B of the electrical box main body 22.

  An operation panel 25 that protrudes in a substantially rectangular shape is formed in the approximate center of the lid body 23, and a sub-board 26 that is connected to the main board 24 using a connector or the like inside the operation panel 25. In addition, an operation unit 27 such as various switches connected to the sub-board 26 by a control line is disposed. The sub-board 26 has a board surface 26 </ b> A facing the outer edge 24 </ b> A of the main board 24.

  The unit cover 21 has a window 21A facing the operation panel 25, and a packing 30 is interposed between the unit cover 21 and the lid 23. The packing 30 is pushed slightly by the unit cover 21. It is compressed. The unit cover 21 is firmly fixed to the housing 3A via screws 28.

  As shown in FIGS. 4A and 4B, the lid body 23 includes an upper lid plate 31 and a lower lid plate 32, and after overlapping them, the claw 33 is bent to superimpose the lid plates 31 and 32. It is configured.

  The lower cover plate 32 is formed with two ventilation holes (venting portions) 32A, a through hole 32B through which the operation panel 25 passes, and a pin hole 32C.

  The upper cover plate 31 is formed with a vent group (vent) 31A composed of a number of circular holes aligned with the vent holes 32A, a through hole 31B through which the operation panel 25 passes, and a pin hole 31C. Positioning pins (not shown) provided on the electrical box main body 22 are engaged with the pin holes 31C and the pin holes 32C.

A packing 30 is affixed to an intermediate portion of the vent hole group 31A. As described above, the packing 30 is pressed by the unit cover 21 and slightly compressed, and the lid 23 is fixed by this compression force. Yes.

  When the lid 23 having the above-described configuration is used, heat generated from the substrate is diffused and exhausted by the air hole group 31A. Since the packing 30 exists in the middle part of the vent hole group 31A, the packing 30 serves as a partition wall, and the exhaust heat from both the vent hole groups 31A is not mixed and is smoothly exhausted. Further, since the packing 30 is present in the middle portion of the air hole group 31A, the distance between the unit cover 21 and the lid body 23 is kept almost constant by the packing 30, so that the above-described exhaust heat is reduced. It becomes smoother.

  As shown in FIG. 4B, the operation unit 27 includes various LED lamps such as an operation lamp 27A, a timer lamp 27B, a service failure diagnosis lamp 27C, a tag switch 27D, a remote control address switch 27E, an operation stop switch 27F, a slide switch. It is configured with various switches such as 27G.

  In the present embodiment, the electrical box main body 22 is fixed to the housing 3A of the air conditioner 3, the lid body 23 is directed to the opening 22C of the electrical box main body 22, and the unit cover 21 is placed thereon. The cover 21 is fixed to the housing 3A with a screw 28. When the unit cover 21 is fixed, the packing 30 is compressed and the lid 23 is pressed toward the electrical box body 22 side.

  Conventionally, when the lid 23 is firmly fixed to the opening 22C of the electrical box main body 22 with a screw, an excessive external force may be applied to the main board 24 of the electrical box main body 22, the sub board 26 of the lid 23, or the like. There is.

  However, in the present embodiment, the lid body 23 is gently pressed via the packing 30 and is set on the electrical box body 22, so that the main board 24 of the electrical box body 22, the sub board 26 of the lid body 23, etc. No excessive external force acts on the main substrate 24 and the deformation of the main substrate 24 and the sub substrate 26 is suppressed.

  As mentioned above, although this invention was demonstrated based on one Example, this invention is not limited to this, A various change is possible.

It is a longitudinal cross-sectional view which shows one Example of the air conditioner which concerns on this invention. It is a front view of the air conditioner of the state which removed the unit cover. It is sectional drawing of an electrical equipment box. A shows an upper cover plate, and B shows a lower cover plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Air conditioner 3A Case 4 Heat exchanger 6 Blower 20 Electrical box 21 Unit cover 21A Window 22 Electrical box body 22C Opening part of electrical box body 23 Cover body 24 Main board 25 Operation panel 26 Sub board 27 Operation part 30 Packing 31 Upper cover plate 31A Vent group (vent)
32 Lower lid plate 32A Ventilation hole (ventilation part)

Claims (1)

In a built-in type air conditioner in which the casing itself is embedded in its mounting wall, in the air conditioner having a heat exchanger, a blower, and an electrical box inside the casing,
The electrical box has an opening on one side and an electrical box body in which a main board is disposed inside,
A cover body that is provided so as to cover the opening of the electrical box body, and that has a sub-board with the substrate surface facing the outer edge of the main board, and an operating portion connected to the sub-board,
A window having a window for facing the operation portion of the lid while covering the electrical box body, and a unit cover fixed to the housing;
The electrical box body is provided with positioning pins,
The lid body is configured by superposing an upper lid plate having packing and a lower lid plate having the sub-board, and each lid body is provided with a heat-dissipating ventilation portion and is associated with the positioning pin. A pin hole is provided, the positioning pin and the pin hole are engaged and provided in contact with the opening of the electrical box body, and the unit cover is fixed to the housing, An air conditioner characterized in that the lid is pressed against the electrical box body by the packing interposed between the unit cover and the unit cover .

Images