JPH10227490A - Sensor fastening means for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately detect the temperature of intake outdoor air avoiding any thermal influence from a heat exchanger even when a temperature sensor held by sensor fastening means is disposed adjacent to the heat exchanger. SOLUTION: Sensor fastening means comprises a mounting portion 8 which is mounted on an outdoor heat exchanger 1 and a protective cover 7 which is connected to the mounting portion 8 such that the protective cover 7 is positioned at the outdoor-air-intake side of the heat exchanger 1 when the mounting portion 8 is mounted on the outdoor heat exchanger 1. The protective cover 7 can accommodate and hold a temperature sensor 4 while at least assuring a space 9 between the wall 7a of the heat exchanger 1 and the temperature sensor 4 so that the temperature sensor 4 is protected from an unexpected outer force. Furthermore, the space 9 restricts the influence of the heat radiated from the heat exchanger 1 onto the temperature sensor 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor stop for an air conditioner, and more particularly to a sensor stop for a temperature sensor provided on an outside air suction side of an outdoor heat exchanger for detecting the temperature of outside air. It is.

[0002]

2. Description of the Related Art A temperature sensor of this type is provided immediately inside an outside air inlet of an outdoor unit of an air conditioner, and is located at a position where it can be easily touched by a hand or the like from the outside. For this reason, as shown in FIG. 3, the temperature sensor a is covered with a metal case b so as to protect it from careless external force. This temperature sensor a is connected to an outdoor heat exchanger c shown in FIGS.
The sensor stopper g as shown in FIGS. 4A and 4B is used to hold the outside air suction side d. This sensor stopper g is a fin c1 of the heat exchanger c.
And a sensor holder f provided at a tip of an arm e extending from the mounting portion d to the outside air suction side to be fitted into the heat exchange pipe c2 of the heat exchanger c to be inserted therefrom.

The temperature sensor a has a good thermal conductivity even if it is covered by a metal case b, so that it is easy to detect the outside air temperature. However, at the same time, the temperature of the outside air is difficult to accurately detect because the heat of the heat exchanger c is also easily affected. In order to cope with this, conventionally, a plate h for shielding between the temperature sensor a and the heat exchanger c is provided on the arm e, but this is not enough, and the length of the arm e is increased to increase the temperature. The sensor a is largely separated to a position where there is no thermal influence from the heat exchanger c.

[0004]

However, in the above-mentioned conventional structure, the installation position of the temperature sensor a is far away from the heat exchanger c, so that the distance between the heat exchanger c and the outside air suction port becomes large. The cabinet of the outdoor unit accommodating the heat exchanger c becomes large. Increasing the size of the cabinet causes various problems such as an increase in cost, a decrease in handleability due to an increase in weight, an increase in transportation cost, and an increase in installation space.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sensor for an air conditioner which can be installed so that a temperature sensor can accurately detect the temperature of the outside air taken in without being affected by heat from the heat exchanger near the heat exchanger. It is to provide a stop.

[0006]

In order to achieve the above object, the sensor stop of the air conditioner according to the present invention is mounted on an outdoor heat exchanger of an air conditioner, and the outdoor heat exchanger is mounted on the outdoor heat exchanger. To hold a temperature sensor for detecting the temperature of the outside air on the outside air suction side of the exchanger, a mounting portion to the heat exchanger, and when the mounting portion is mounted to the heat exchanger, the heat exchanger A protection cover connected to the mounting portion so as to be positioned on the outside air suction side, the protection cover providing a space between at least the heat exchanger side wall and accommodating and holding the temperature sensor. It is characterized by having done.

In this configuration, the mounting portion is mounted on the outdoor heat exchanger, and the temperature sensor is housed and held on the outside air suction side of the heat exchanger by the protective cover. The temperature sensor can be protected from inadvertent external force by the cover being covered, and the protective cover is provided by the space provided between the wall on the heat exchanger side and the temperature sensor. Since the influence of the heat on the temperature sensor is suppressed, even if the temperature sensor is located near the heat exchanger, it is possible to accurately detect the temperature of the outside air sucked into the heat exchanger, and The cabinet of the air conditioner accommodating the outer heat exchanger can be made smaller than before.

If a stopper for preventing the temperature sensor housed and held in the protective cover from approaching the heat exchanger side wall by a predetermined distance or more is provided separately from the heat exchanger side wall, the protective cover is provided. The space between the wall on the heat exchanger side and the temperature sensor is always secured by a stopper, and the stopper is away from the wall and it is difficult to transmit the heat of the heat exchanger to the temperature sensor. Accurate detection of the temperature of the outside air without the heat influence from the heat exchanger can be assured.

A protective cover accommodates the temperature sensor with a space provided around the temperature sensor. The protective cover has an outside air inlet on a surface facing the outside air facing the heat exchanger. When the outside air outlet is provided at an appropriate position on the surface except the surface, the space between the protective cover and the temperature sensor allows the heat of the heat exchanger to reach the temperature sensor via the protective cover. Further suppressing and, after the intake outside air facing the heat exchanger naturally flows into the protection cover from the outside air inlet provided on the opposite surface of the protection cover facing the heat exchanger,
The temperature reaches the outside air outlet on the surface except for the facing surface and the surface on the heat exchanger side of the protective cover, smoothly flows out of the protective cover, and changes the position of the temperature sensor stored and held in the protective cover to the outside air. Always passes through, the temperature sensor uses the space between the temperature sensor and the protective cover to contact the outside air to directly detect the temperature, and the outside air inlet and the outside air outlet are The protective cover is not on the surface of the heat exchanger, and the outside air outlet is slightly closer to the heat exchanger, but outside air always flows out and flows to the heat exchanger, and the heat of the heat exchanger is protected through the outside air outlet. By preventing the inside of the cover from moving, the accuracy of detecting the outside air temperature of the temperature sensor is further improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to FIGS.

(Embodiment 1) As shown in FIGS. 1 (a) and 1 (b), a first embodiment of the present invention is directed to an outdoor heat exchanger 1 of an air conditioner, and to the heat exchanger 1. An example of a sensor stopper 5 of a temperature sensor 4 for detecting the temperature of the outside air sucked from the suction port 2 in an outdoor unit 3 having a suction port 2 for sucking outside air is shown. However, the present invention is not limited to this. In an integrated air conditioner in which a suction port for sucking outside air toward an outdoor heat exchanger faces outside, the temperature of outside air sucked from the suction port is detected. The invention applies analogously to temperature sensors.

The outside air temperature information detected by the temperature sensor 4 is used, for example, by the air conditioner to control the indoor temperature to a set temperature or to perform control corresponding to an abnormal air temperature. It is desired to detect accurately.

In order to satisfy this, the sensor stopper 5 of the first embodiment has a mounting portion 8 to the heat exchanger 1 and a mounting portion 8 as shown in FIGS. 1 (a) and 1 (b). When the heat exchanger 8 is mounted on the heat exchanger 1, the heat exchanger 1 is provided with a protective cover 7 connected to the mounting portion 8 so as to be positioned on the outside air suction side. A space 9 is provided between the container 1 and the wall 7a, and is accommodated and held.

Therefore, the mounting portion 8 is formed as shown in FIG.
As shown in (b), when the protective cover 7 is attached to the outdoor heat exchanger 1, the protective cover 7 can house and hold the temperature sensor 4 on the outside air suction side of the heat exchanger 1, and the temperature sensor 4 Although it is easy to receive an external force by hand or the like close to the suction port 2 via the filter 11 or by removing the filter, the protective cover 7 covers the temperature sensor 4 so that the temperature sensor 4 , And can be prevented from being displaced.

The protective cover 7 also suppresses the influence of the heat of the heat exchanger 1 on the temperature sensor 4 by the space 9 provided between the wall 7a on the heat exchanger 1 side and the temperature sensor 4. Even if the temperature sensor 4 is located near the heat exchanger 1, the temperature of the outside air drawn into the heat exchanger 1 can be accurately detected, and the air conditioner that houses the outdoor heat exchanger 1 The cabinet 3a and the like of the outdoor unit 3 according to the first embodiment can be made smaller than before.

The protective cover 7 may be made of any material as long as the above function can be exhibited stably. In the first embodiment, a synthetic resin is used, and various necessary shapes and structures can be easily obtained by simple molding and assembling a plurality of parts.

The protective cover 7 includes, for example, a main body case 71 having an open rear end, and a lid 73 for closing the rear end of the main case 71 from behind. And the lid 73 is integrated by various appropriate coupling structures such as forced fitting or elastic fitting.
The temperature sensor 4 having the lead wire 6 held by a seal bush 74 as shown in FIG.
In a predetermined position. In addition, the covering material of the lead wire 6 and the cover 73 may be formed as an integrated product to satisfy the seal between them.

The mounting portion 8 of the protective cover 7 has a structure in which the heat exchanger 1 has a number of fins 1b fitted to a plurality of heat exchange pipes 1a in the longitudinal direction thereof, and FIG.
As shown in the figure, the C-shaped recessed portion 75 is inserted between the fins 1b and elastically engages with the two C-shaped concave portions 75.
3 or one as in the first embodiment.

However, the specific shape and configuration of the protective cover 7 are not limited to those shown in the first embodiment.
It can be designed in various ways, and the mounting type and mounting structure to the heat exchanger 1 can be freely designed. In some cases, the mounting structure may not be retrofitted. However, in this case, it is preferable that the protective cover 7 has an opening / closing structure or a disassembly structure in which the temperature sensor 4 can be replaced as needed.

The protective cover 7 of the first embodiment further includes
As shown in FIGS. 1 (a) and 1 (b), a space 9 is provided and accommodated in the entire area around the temperature sensor 4, and an outside air inlet 76 is provided on a facing surface 7b facing the suction outside air facing the heat exchanger 1. Have
In the first embodiment, outside air outlets 77 are provided at upper and lower surfaces 7d, 7d at appropriate places on the surface 7d excluding the facing surface 7b and the surface 7c on the heat exchanger 1 side.

Therefore, the protective cover 7 is
, The heat of the heat exchanger 1 can be further suppressed from reaching the temperature sensor 4 via the protective cover 7. In addition, after the intake outside air facing the heat exchanger 1 naturally flows into the protection cover 7 from the outside air inlet 76 provided on the opposite surface 7b of the protection cover 7 facing the suction air, the suction outside air and the heat from the opposite surface 7b of the protection cover 7 Exchanger 1 side 7
(c) because the air reaches the outside air outlet 77 on the surface 7d excluding (c) and smoothly flows out of the protection cover 7 so that the outside air always passes through the position of the temperature sensor 4 housed and held in the protection cover 7. Thus, the temperature sensor 4 can contact the outside air using the space 9 between the temperature sensor 4 and the protective cover 7 to directly detect the temperature.
Further, the above-mentioned outside air inlet 76 and outside air outlet 77 are not on the surface 7c of the protective cover 7 on the heat exchanger 1 side, and the outside air outlet 77 is slightly close to the heat exchanger 1, but the outside air always flows out and heat is generated. The heat flowing to the exchanger 1 can be prevented from moving into the protective cover 7 through the outside air outlet 77 due to the heat of the heat exchanger 1. Therefore, according to the protective cover 7 of the first embodiment that exhibits these functions, the outside air temperature detection accuracy of the temperature sensor 4 is further improved.

In the first embodiment, the protective cover 7
The portion of the opposed surface 7b where the outside air inlet 76 is provided is a chamfered portion 7b1 so that a portion of the outside air that is drawn in is allowed to pass through the protective cover 7 naturally and naturally while escaping slightly outside. is there. Thus, the detection of the temperature of the outside air by the temperature sensor 4 is achieved without the passage resistance of the outside air and without generating the wind noise.

(Embodiment 2) In Embodiment 2, as shown in FIG. 2, a temperature sensor 4 housed and held by a protective cover 7 is attached to a wall 7a of the protective cover 7 on the heat exchanger 1 side by a predetermined amount. The stopper 78 for preventing the distance from approaching more than the distance is provided on the wall 7a.
It is provided away from. According to this, the space 78 between the wall 7a of the protective cover 7 on the heat exchanger 1 side and the temperature sensor 4 is always secured by the stopper 78, and the stopper 78 is separated from the wall 7a and the heat exchanger 1 is difficult to transmit to the temperature sensor 4, so that the temperature sensor 4
It is possible to guarantee that the temperature of the outside air is accurately detected without the influence of heat from the outside.

In the second embodiment, the stopper 78 is
3, it may be integrally formed on the side of the main body case 71, or may be integrally formed on both the main body case 71 and the lid 73. In addition, a structure in which a separate object is attached to them may be adopted. Further, if the stopper 78 is a partition wall forming an independent space for heat insulation between the stopper 78 and the wall 7a, the heat of the heat exchanger 1 is less likely to spread to the temperature sensor 4.

Since other structures, functions and effects are the same as those of the first embodiment, the same members and portions are denoted by the same reference characters, and overlapping description will be omitted.

[0026]

According to the sensor stopper of the air conditioner of the present invention, the temperature sensor can be protected from an inadvertent external force, and the accuracy of detecting the temperature of the suctioned outside air due to the influence of heat from the heat exchanger can be reduced. The temperature sensor can be located near the heat exchanger without the heat exchanger, and the cabinet of the air conditioner accommodating the outdoor heat exchanger can be made smaller than before.

According to the second aspect of the present invention, it is particularly possible to guarantee that the temperature sensor accurately detects the temperature of the outside air as described above.

According to the third aspect of the present invention, in particular, the detection of the temperature of the outside air by the temperature sensor can be directly and accurately achieved by utilizing the space for preventing the influence of heat from the heat exchanger. .

[Brief description of the drawings]

FIG. 1 shows an outdoor unit of an air conditioner according to Embodiment 1 of the present invention, in which (a) is a cross-sectional plan view of a temperature sensor mounting portion,
(B) is a front view of a temperature sensor installation portion of the heat exchanger, and (c) is a cross-sectional view of the heat exchanger showing a mounting state of the temperature sensor.

FIG. 2 shows an outdoor unit of an air conditioner according to Embodiment 2 of the present invention, in which (a) is a plan view of a heat exchanger of a temperature sensor mounting portion, (b) is a cross-sectional view of the temperature sensor, (C)
Fig. 3 is a front view of a heat exchanger at a mounting portion of the temperature sensor.

FIG. 3 is a cross-sectional view of a conventionally used temperature sensor.

4A and 4B show a conventional outdoor unit using the temperature sensor of FIG. 3, wherein FIG. 4A is a plan view of a heat exchanger of a temperature sensor mounting portion, and FIG. Front view.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat exchanger 2 suction port 3 outdoor unit 4 temperature sensor 5 sensor stopper 7 protective cover 7 a wall on heat exchanger side 7 b opposing surface 7 c surface on heat exchanger side 7 d surface excluding opposing surface and surface on heat exchanger side 8 mounting part 9 space 76 outside air inlet 77 outside air outlet 78 stopper

Claims (3)

[Claims] 1. A sensor stopper mounted on an outdoor heat exchanger of an air conditioner and holding a temperature sensor for detecting a temperature of outside air on an outside air suction side of the outdoor heat exchanger, wherein the heat exchanger is And a protection cover connected to the mounting portion such that when the mounting portion is mounted on the heat exchanger, the mounting portion is located on the outside air suction side of the heat exchanger.
A sensor stopper for an air conditioner, wherein the protective cover is provided with a space between at least the heat exchanger side wall and a temperature sensor for housing and holding the temperature sensor. 2. An air conditioner provided with a stopper for preventing a temperature sensor housed and held in a protective cover from approaching the heat exchanger side wall by a predetermined distance or more, away from the heat exchanger side wall. Sensor stop of machine. 3. The protective cover has a space between around the temperature sensor, and has an outside air inlet on a facing surface facing the suction outside air facing the heat exchanger, wherein the facing surface and the heat exchanger are provided. The sensor stop of an air conditioner according to any one of claims 1 and 2, further comprising an outside air outlet at an appropriate position on a surface other than the side surface.