JP2006132812A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein a suction air temperature of high accuracy may not be detected in some cases only by suppressing heat conduction on a printed board low in the case of detecting the temperature of air sucked into an indoor heat exchanger, by an indoor air temperature sensor provided on the printed board. <P>SOLUTION: Parts mounted on the printed board with a temperature detecting means arranged for environment to be air-conditioned, are arranged to ensure a ventilation flue, and the temperature detecting means for a space to be air-conditioned is located almost on an extension line of the ventilation flue to allow inexpensive, accurate temperature detection. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner having temperature detecting means for an air-conditioned space.

  Conventionally, as for the temperature of the air-conditioned space, the temperature of the air-conditioned space is detected by detecting the temperature of the air to be sucked into the heat exchanger by a temperature detecting means of the air-conditioned space installed near the heat exchanger, for example, a temperature sensor. (For example, refer to Patent Document 1). In addition, there is one that detects an air temperature by a temperature sensor provided on a printed circuit board (see, for example, Patent Document 2).

FIG. 4 shows a temperature sensor provided on a conventional printed circuit board described in Patent Document 2. In FIG. As shown in FIG. 4, a slit 56 is provided around the temperature sensor 60. By providing the slit 56, a partition portion in which heat conduction from the control circuit 55 side to the temperature sensor 60 side is suppressed to be small. 57 is formed. Therefore, the heat generated while the control circuit 55 on the printed circuit board 51 is energized is not easily transmitted to the temperature sensor 60 by the partition 57, and the effect on the temperature detection accuracy of the temperature sensor 60 is minimized. Yes.
JP-A-6-26690 JP 2001-221486 A

  However, the conventional configuration has the following problems. In other words, when the temperature of the air-conditioned space is detected by a temperature sensor provided on the printed circuit board, the air-conditioned space with high accuracy can be obtained simply by reducing the heat conduction on the printed circuit board, such as when the amount of radiant heat from the printed circuit board is large. In some cases, the temperature could not be detected. In addition, in a structure in which the printed circuit board and the temperature sensor are included in a housing such as an air conditioner where the printed circuit board is not directly exposed to the air-conditioned space, the accuracy becomes lower.

  On the other hand, as shown in Patent Document 1, it is possible to measure the temperature of the air-conditioned space with higher accuracy by arranging the temperature detecting means on the outside of the printed circuit board, not near the air-conditioned space. The farther from the printed circuit board, the higher the cost.

  The present invention solves the above-described conventional problems, and an object thereof is to provide an air conditioner having temperature detecting means for an air-conditioned space that enables more accurate temperature measurement without increasing costs. .

  In order to solve the above-described conventional problems, the air conditioner of the present invention is arranged such that the mounting parts on the printed circuit board on which the temperature detection means of the air-conditioned space is arranged are arranged so as to secure a ventilation path, and the temperature of the air-conditioned space The detection means is characterized by being located on a substantially extended line of the ventilation path.

  As a result, the influence of radiant heat from the printed circuit board is reduced, and the temperature of the air-conditioned space can be detected more accurately at a low cost.

  The air conditioner of the present invention can detect the temperature of the air-conditioned space, which is an important element for the air-conditioning control, at a low cost and more accurately without increasing the number of parts and assembly man-hours.

  1st invention arrange | positions the mounting components on the printed circuit board which arrange | positions the temperature detection means of an air-conditioned space so that a ventilation path may be ensured, and arrange | positions the temperature detection means of an air-conditioned space on the substantially extension line of the ventilation path. By disposing, the influence of the radiant heat from the printed circuit board can be reduced, and the temperature of the air-conditioned space passing through the ventilation path can be detected more accurately.

  In the second aspect of the invention, the ventilation path is substantially straight, and is arranged downstream of the air intake hole of the air-conditioned space provided in the wall portion of the casing including the temperature detection means of the air-conditioned space and the printed circuit board. By being provided, the air in the air-conditioned space can easily flow through the ventilation path, so that the temperature of the air-conditioned space can be detected more accurately.

  In the third invention, the temperature detection means of the air-conditioned space can be detected more accurately by providing the temperature detection means on the printed circuit board and at a location closest to the housing wall.

  According to a fourth aspect of the present invention, the temperature of the air-conditioned space is more accurately determined by arranging the printed circuit board on which the temperature detecting means for the air-conditioned space is disposed in the gap between the heat exchanger and the outer wall of the air conditioner main body casing. Can be detected.

  According to a fifth aspect of the present invention, the ventilation path provided in the printed circuit board is provided in a straight line in a substantially horizontal direction, and is disposed between the air intake hole provided in the outer wall of the air conditioner body housing and the heat exchanger. The air sucked from the air intake hole is not easily affected by the air exchanged by the heat exchanger, and the temperature of the air-conditioned space can be detected more accurately.

  According to a sixth aspect of the present invention, the air sucked in from the air intake hole is a heat exchanger by arranging the air intake hole in the wall portion of the air conditioner main body casing outside the wind circuit heat-exchanged by the heat exchanger. It is difficult to be affected by the exchanged air, and the air temperature can be detected more accurately.

  In the seventh invention, since the printed circuit board on which the air detecting means is arranged can be used as a display unit, the number of parts and assembly man-hours can be reduced, so that the cost can be reduced, and the air sucked from the air intake hole is replaced by a heat exchanger. The air temperature can be detected more accurately without being affected by the air.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiment.

(Embodiment 1)
FIG. 1 is a perspective view of a front grille according to a first embodiment of the present invention, FIG. 2 is a perspective view of a display unit, and FIG. 3 is a side view of (a) perspective view (b) of the display unit on the front grille. A sectional view is shown. In the figure, a display unit 2 and an indoor heat exchanger 3 are arranged inside a front grill 1 which is a part of an indoor unit 8 of the air conditioner.

  Here, the display unit 2 is composed of a printed circuit board on which a light emitting diode, a liquid crystal, and the like are mounted to display the operating condition of the air conditioner body, the room temperature, the operating time, and the like, and its mounting portion. This unit performs display and control for informing the user of the information.

  The display unit 2 is disposed between the indoor heat exchanger 3 and the outer wall 7 of the front grill 1 that is a part of the indoor unit 8 and closer to the outer wall 7 for the purpose of improving visibility.

  The mounted parts on the display unit 2 are arranged so as to secure the ventilation path 6. On the other hand, the indoor air temperature sensor 4 is provided on the display unit 2, and at the same time is located on a substantially extended line of the ventilation path 6.

  At this time, since the intake air to the indoor unit 8 flows on the ventilation path 6, when the indoor air temperature sensor 4 detects the indoor air temperature, it becomes possible to detect the intake air temperature more accurately.

  The ventilation path 6 provided on the display unit 2 is linearly provided in a substantially horizontal direction. Further, the display unit 2 is a suction provided on the outer wall 7 of the front grill 1 which is a part of the indoor unit 8. Since it is disposed between the air slit 5 and the indoor heat exchanger 3, the air sucked into the indoor unit 8 is heat-exchanged by the indoor heat exchanger 3, and the influence of the air blown out from the front of the indoor unit 8 is affected. It is difficult to receive air, and it is possible to detect an accurate suction temperature reflecting the room temperature.

  In addition, the indoor air temperature sensor 4 is located on the display unit 2 and at the same time is provided at a location closest to the outer wall 7 of the front grill 1 that is a part of the indoor unit 8. It is possible to detect an accurate suction temperature that reflects room temperature and is not easily affected by heat generated in the interior.

  In addition, by providing the indoor air temperature sensor 4 on the display unit 2, the signal line to the temperature heat sensitive part and the printed circuit board is less than the case where the temperature heat sensitive part is fixed near the conventional indoor heat exchanger 3. It becomes unnecessary, and cost reduction can be realized.

  In the present embodiment, the location of the display unit 2 has been described with the example provided on the right side of the indoor heat exchanger 3, but the left side, the upper side, the lower side, the near side, or the rear side of the indoor heat exchanger 3 are described. It may be a case and is not limited to the said place.

  Further, in the present embodiment, the suction air slit 5 has been described as the indoor air intake hole, but it is also possible to make a large hole, to provide a large number of small holes, or to provide a lattice-like hole, Other shapes may be used and the shape is not limited to the above.

  Further, in the present embodiment, the indoor air temperature sensor 4 is provided on the display unit 2, but it is not necessary to be directly above the indoor unit 8, and the display unit 2 is protruded by the sensor lead wire. A temperature and heat sensitive part may be provided at a position close to the outer wall 7 and is not limited to the above place.

  As described above, the air conditioner according to the present invention is disposed so as to secure a ventilation path for the mounted components on the printed circuit board, and the temperature detection means disposed on the printed circuit board is substantially on the extension line of the ventilation path. Since it is provided so that it can be accurately detected at low cost, it can be used for indoor units of air conditioners, outdoor units, remote controllers, other heaters, and cooling devices for various devices. It can also be applied to.

The perspective view of the front grille in Embodiment 1 of the present invention The perspective view of the display unit in Embodiment 1 of this invention (A) Perspective view (b) Side sectional view of display unit on front grill in embodiment 1 of the present invention Conventional indoor air temperature sensor plan view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front grill 2 Display unit 3 Indoor heat exchanger 4 Indoor air temperature sensor 5 Suction air slit 6 Ventilation path 7 Front grill outer wall 8 Indoor unit

Claims (7)

A mounting component on a printed circuit board on which a temperature detection means for an air-conditioned space is arranged is arranged so as to secure a ventilation path, and the temperature detection means is arranged on a substantially extended line of the ventilation path. Harmony machine. The ventilation path is provided in a substantially straight line, and is disposed in the downstream portion of the air intake hole of the air-conditioned space provided in the wall portion of the casing including the temperature detection means and the printed board. The air conditioner according to claim 1. The air conditioner according to claim 1 or 2, wherein the temperature detection means is provided on a printed circuit board and at a location closest to the housing wall. The air conditioner according to any one of claims 1 to 3, wherein the printed circuit board on which the temperature detecting means is disposed is disposed in a gap between the heat exchanger and the outer wall of the air conditioner main body casing. The ventilation path provided in the printed circuit board is provided in a straight line in a substantially horizontal direction, and is provided between the air intake hole of the air-conditioned space provided in the outer wall of the air conditioner body housing and the heat exchanger. The air conditioner according to any one of claims 1 to 4, wherein The air intake hole of the air-conditioned space provided in the outer wall of the air conditioner main body casing is disposed in the casing wall portion outside the wind circuit heat-exchanged by the heat exchanger. 5. The air conditioner according to 5. The air conditioner according to claim 1, wherein the printed circuit board is a display unit.