JPH11237080A - Air conditioning equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit which is provided with a guard hole at an outside air intake port to secure the protection, for example, a finger is kept from touching a temperature sensor that is provided in the outdoor unit and detects the temperature of the outside air for the exchange of heat to control the operation, so that the heat exchanging capacity is adjusted by the control of the number of revolutions of an air fan thereof. SOLUTION: A part corresponding to a temperature sensor of a grill 21 covering an outside air intake port of an outdoor unit is guarded by a slit hole 24 with the opening area thereof smaller than that of a grill port, while the guard hole 24 is provided with a cover wall 25 to cover the frost thereof so that a finger, a bar or the like enters into the sensor directly to enhance the safety thereof. This also makes available the outdoor unit which can more accurately prevent damage to the temperature sensor as caused by tampering.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a structure for ensuring protection of a temperature sensor provided for appropriately controlling the heat exchange capacity of a heat exchanger.

[0002]

2. Description of the Related Art At present, an air conditioner is separated into an outdoor unit and an outdoor unit, and a separation type air conditioner in which these two units are connected by a refrigerant pipe is widely used. FIG. 4 shows an outdoor unit of the separation type air conditioner, and FIG. 5 is an exploded view of the outdoor unit. FIG. 6 is an enlarged view of a main part of the air intake port.

As can be understood from the drawings, the outdoor unit 1
Is equipped with a compressor 2, an outdoor heat exchanger 3 for exchanging heat with the outside air, a blower fan 4 and the like, and although not shown in both figures, the indoor unit has a heat exchange with the indoor air. The air conditioner is equipped with an indoor heat exchanger for replacement and a blower fan for blowing conditioned air into the room.

[0004] Further, an outdoor unit case 5 that forms the exterior of the outdoor unit.
The outside air intake 6 formed by opening the front and one side and a circular outside air discharged after the outside air taken in by the blower fan 4 from the intake 6 and exchanging heat with the outdoor heat exchanger 3. The outlet 7 is formed to face the front and rear. The outside air inlet 6 and the outside air outlet 7 are generally protected by grill surfaces 8, 9 formed by a large number of openings in the form of lattices, radials, and rings, that is, grill holes 8a, 9a.

[0005] Reference numeral 10 denotes a fan motor for driving the blower fan 4. 11 and 12 are service valves, 13 is a strainer, 14 is an accumulator, 15
Reference numerals a and 15b denote capillary tubes, which are not shown in the figure, but are provided with electric parts such as an electromagnetic valve, a check valve, an electromagnetic coil and an electrolytic capacitor for operating the same, and further, a fixing screw, a vibration-proof rubber and the like. The outdoor unit 1 is made up of many components such as mechanical parts.

In the separation type air conditioner having such a configuration, the flow direction of the refrigerant is switched between cooling and heating by a four-way valve (not shown) provided in the middle of the refrigerant pipe, and cool or warm air is supplied from the indoor heat exchanger. The room is to be cooled and heated.

Further, the operation control of the air conditioner is performed in accordance with the room temperature so that the air conditioner can exhibit its operating ability, that is, its cooling ability and heating ability. Therefore, in order to control the operation capacity, generally, a temperature sensor 17 for detecting the temperature of the outside air blown to the outdoor heat exchanger 3 is provided with a refrigerant pipe 3B of the outdoor heat exchanger 3 as shown in FIG. The air temperature detected immediately before being taken into the outdoor heat exchanger 3 by the temperature sensor 17 increases the rotational speed of the blower fan 4 as a basis for determining whether a large heat exchange capacity is required. The operation of the fan motor 10 of the blower fan 4 is controlled so as to be lowered or lowered, and the heat exchange capacity of the outdoor heat exchanger 3 is appropriately exhibited to perform air conditioning.

As described above, the outdoor heat exchanger 3 accommodates the outside air inlet 6 and the outside air outlet 7 in the outdoor unit case 5 guarded by the grill surfaces 8 and 9. The temperature sensor 17 provided in the heat exchanger 3
There is a risk that fingers, sticks, etc. may be inserted from outside through the grill holes 8a, 9a of the grill surfaces 8, 9. Temperature sensor 1
7 is an electric component, and there are various problems when the inserted finger touches it. For example, a problem arises in that normal operation and control are not performed due to disconnection of the wiring of the temperature sensor 17.

Therefore, in order to prevent the temperature sensor 17 from touching and sometimes causing a failure, conventionally, the portion of the grill surfaces 8 and 9 corresponding to the temperature sensor 17 has a smaller grill hole. The guard is strengthened as a guard hole 18 which is made up of, for example, a large number of small round holes, narrow narrow slit holes, or the like.

[0010]

However, as shown in the sectional view of FIG. 6, the conventional guard hole 18 has a horizontally elongated slit hole formed by simply punching out the plate surface of the outdoor unit case 5 or the like. Therefore, the temperature sensor 17 can be seen through the slit hole, and a finger or a stick can be inserted horizontally (at a right angle) from the slit hole. The potential for mischief remained, and the structure was not sufficient to protect the temperature sensor.

Further, if the slit hole is made small so that the finger is not inserted, the opening area becomes small, and a problem arises that sufficient outside air does not pass through the temperature sensor, and the temperature detection becomes unstable. Also happens.

The present invention has been made in view of the above points, and has as its object to provide an air conditioner having a guard structure that more reliably protects a temperature sensor related to proper control of air conditioning capacity. And

[0013]

In order to solve the above-mentioned problems, the present invention is divided into an indoor unit and an outdoor unit, and the outdoor unit has a compressor, an outdoor heat exchanger, and a heat exchanger connected to the outdoor heat exchanger. While installing a blower fan or the like for taking in and blowing the exchange air, it is arranged near the heat exchanger, detects the outside air temperature before passing through the heat exchanger, and based on the detected temperature, In an air conditioner having a temperature sensor for appropriately controlling a heat exchanger capacity by changing a rotation speed, an outside air intake provided in an outdoor unit case forming an exterior of an outdoor unit is provided to a plurality of grill holes. A plurality of guard holes having an opening area smaller than the grill hole are formed in a region corresponding to the temperature sensor, and a front wall of the guard hole is covered with a covering wall.

Further, the guard hole has a slit shape.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a main part of a case surface of the outdoor unit case 5 on the side of the outside air intake 6, and FIG. 2 is a guard hole formed in the case surface to protect the temperature sensor 17. FIG.

In both figures, reference numeral 20 denotes an outdoor unit case forming an exterior of the outdoor unit, and reference numeral 21 denotes an outside air intake of the outdoor unit case, which is covered with a grill surface 23 formed from a grid-like grill hole 22a. Have been done. Reference numeral 24 denotes guard holes formed in a portion of the grill surface 23 corresponding to the temperature sensor 17 in the outdoor unit case 20, and these guard holes 24 have an opening area smaller than that of the lattice-shaped grill holes 22a. Holes, here 6 elongated slit holes 2
4 are arranged one above the other to form a body, which forms a guard for the temperature sensor 17.

Then, six slit holes (guard holes) 2
4, the upper three slit holes 24 substantially facing the temperature sensor 17 cover the entire area including the front area and the left and right side areas of the slit hole 24 as shown in FIG. A cover wall 25 is formed to protrude like an eave to prevent a finger or the like from easily entering.

A space S is secured between the lower end 26 of the covering wall 25 and the wall surface 20b of the outdoor unit case 20,
Since the ventilation opening communicating with the slit hole 24 is formed, the ventilation of the outside air for heat exchange is performed without any trouble.

A cover wall 25 formed in such a part to secure a ventilation opening is provided in a guard hole 24 at a location corresponding to the temperature sensor 17 so as to further enhance the guard. If you try to insert it into the guard hole 24,
The covering wall 25 is in the way and cannot be performed. If a finger is forcibly inserted, the finger is inserted obliquely from below through the space S.

However, in the case where such a finger is inserted obliquely from below, the fingertip cannot enter until it touches the temperature sensor 17. Also, when a rod is inserted, it can only be inserted diagonally as the rod 28 shown in FIG. 2, and such a rod 28 that enters diagonally does not reach the temperature sensor 17 and the temperature sensor 17 is damaged. There is no fear of mischief and the mischief is completely prevented. Further, if the guard hole 24 having such a covering wall 25 is used, the effect of preventing insertion can be obtained even if the guard hole 24 itself is not so small. It becomes easy and the ventilation is sufficient.

As shown in FIG. 3, the shape of the cover wall may be a cover wall 25b of a divergent shape in which the space S is slightly widened so as not to allow easy insertion of a finger or the like. Further, the length of the covering wall 25 may be such that the lower end 26 is shorter than the lower edge of the slit hole 23, or may be longer than the lower edge, and may be dimensioned so as to overlap the case wall surface 20b. Can be adopted.

Further, in the embodiment, the case where the guard hole is formed of a plurality of horizontal slit holes and a cover wall is provided has been described. However, the guard hole is formed of a plurality of vertical slit holes. The present invention can be applied even if it is configured. That is, a covering wall extending from one side of the vertically oriented slit hole to the lateral side and covering the front portion of the slit hole and the upper and lower edges may be formed. Further, even when the guard hole is composed of a large number of round holes, a circular or dome-shaped covering wall may be formed so as to cover each round hole as a whole.

[0024]

As described above, according to the present invention, the outside air temperature before the heat exchange with the outdoor heat exchanger is detected, the number of rotations of the blower fan is controlled in accordance with the detected temperature, and the air conditioning capacity is appropriately adjusted. In addition to protecting the temperature sensor for controlling the temperature with the grill surface covering the outside air intake, the front of the guard hole with an opening area smaller than the grill hole provided corresponding to the temperature sensor is further covered with a wall. In this case, even if a finger or the like is inserted through the guard hole, the risk of the finger touching the temperature sensor due to the covering wall and damage to the temperature sensor and its surrounding wiring are also prevented. It can increase safety.

Further, even if a finger or a stick is forcibly inserted into the guard hole by mischief, in such a case, the finger or the stick can be inserted only obliquely, not straight, into the guard hole. Fingers or sticks do not reach the temperature sensor, and even in such a case, damage to the temperature sensor can be prevented.

By providing a cover wall in the guard hole, a guard hole into which a finger cannot be inserted can be realized without making the opening area smaller than that of the conventional one. And the effect that the reliability of the temperature sensor can be maintained high can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing an outside air intake of an outdoor unit case.

FIG. 2 is a side sectional view of a main part of a guard hole provided with a wall for protecting the temperature sensor.

FIG. 3 is a side sectional view of a main part according to another embodiment of the guard hole.

FIG. 4 is a configuration diagram of an outdoor unit of the separation type air conditioner.

FIG. 5 is an exploded perspective view of components of the outdoor unit.

FIG. 6 is a sectional view taken along line A- in FIG.
It is A sectional drawing.

[Explanation of symbols]

 Reference Signs List 1 outdoor unit 2 compressor 3 outdoor heat exchanger 4 blower fan 5 outdoor unit case 6, 21 outside air intake 8, 23 grill surface 8a, 22a grill hole 18, 24 guard hole 25 covering wall

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Sadaharu Saito 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. An indoor unit and an outdoor unit which are separated from each other, and the outdoor unit is provided with a compressor, an outdoor heat exchanger, and a blower fan for taking in and exchanging heat exchange air with the outdoor heat exchanger. It is arranged near the heat exchanger and detects the outside air temperature before passing through the heat exchanger, and changes the rotation speed of the blower fan based on the detected temperature to appropriately control the heat exchanger capacity. In the air conditioner having a configuration having the temperature sensor, an outdoor air intake port provided in an outdoor unit case forming an exterior of the outdoor unit is constituted by a plurality of grill holes, and a region corresponding to the temperature sensor is formed by a grill hole. An air conditioner comprising a plurality of guard holes having a small opening area, and a front wall of the guard holes is covered with a wall. 2. The air conditioner according to claim 1, wherein the guard hole is a slit hole.