JPH0519725Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) This invention relates to an air conditioner that performs air conditioning such as indoor heating and cooling, and in particular, it is related to the heat exchanger housed in the air conditioner. Related to improvements in sensor mounting structure.

(Conventional technology) This type of air conditioner that cools and heats a room is
The air conditioner is configured as shown in FIG. 9, and an indoor heat exchanger 2 and an indoor blower 3 are housed in a main body casing 1. It is attached by the mounting screw 5.

On the other hand, in the indoor heat exchanger 2, a return bend 7 for reversing the flow of the refrigerant is provided in the U pipe 6 as a heat exchange pipe, as shown in FIG.
A sensor holder 8 is provided at a predetermined return bend 7, and various sensors 8a such as a temperature sensor are accommodated in this sensor holder 8. In addition, an inspection lid 9 is installed on the side surface of the main body casing 1 so as to face the return bend 7 of the indoor heat exchanger 2 .

(Problems to be Solved by the Invention) In the conventional sensor mounting structure for the heat exchanger in an air conditioner, when the sensor 8a is inserted and mounted in the sensor holder 8 of the return bend 7,
Due to assembly problems of the heat exchanger 2, the set position of the sensor holder 8 is far from the inspection lid 9, and the size and shape of the inspection lid 9 are restricted and cannot be made large. Attachment and detachment work was time consuming and extremely difficult.

This idea was devised in consideration of the above-mentioned circumstances, and it has a simple structure that only improves the specified return bend, and allows the sensor to be attached and detached easily and quickly during maintenance and inspection. The purpose is to provide a harmonizing machine.

[Structure of the idea]

(Means for solving the problem) The air conditioner according to this invention houses a heat exchanger in the main body casing, and a sensor is attached to the return bend of the heat exchanger, while an inspection lid is attached to the return bend side. In an air conditioner installed so as to face the heat exchanger, a predetermined return bend of the heat exchanger is extended toward the inspection lid, the extended portion is bent at a predetermined angle, and a sensor is supported on this bent portion. It is equipped with a sensor holder.

(Function) This air conditioner extends a predetermined return bend of the heat exchanger housed in the main casing toward the inspection lid side, bends the extended portion at a predetermined angle, and then attaches the sensor to the bent portion. Since a holder is provided and the sensor is housed and supported in this sensor holder, the sensor holder is provided inclined near the inspection lid, and the work of attaching and detaching the sensor housed in this sensor holder can be easily and easily performed. I can do it.

(Embodiment) Hereinafter, an embodiment of the air conditioner according to the invention will be described with reference to the accompanying drawings.

1 and 2 show, for example, a ceiling-suspended air conditioner, in which an indoor heat exchanger 11 and an indoor blower (not shown) are housed in a main casing 10 of the air conditioner. An air suction port 12 is formed on the bottom surface, and an air filter 13 is provided to cover the air suction port 12.

3, the air filter 13 is slidably supported by first and second filter guides 15, 16 disposed opposite to each other. The first filter guide 15 has, for example, a U-shaped cross section, and the second filter guide 16 has, for example, a Z-shaped cross section. They are fixed to the lower mounting surface 10a of the main casing 10 by mounting screws 17 or the like.

At that time, a tongue-shaped filter holding piece 18 is attached to the end of the second filter guide 16 on the lower mounting surface 10a.
It is bent to the side and functions as a stopper to keep the filter 13 from sliding. Further, the filter holding piece 18 strengthens the free end side of the second filter guide 16 and prevents its deformation. Therefore, even if the main body casing 10 is temporarily placed on the floor and the air filter 13 is placed in contact with the floor during installation of the air conditioner, the filter holding piece 18 will not touch the lower mounting surface of the main body casing 10. 10a and is strengthened to prevent deformation of the filter guide 16, and the air filter 1
3. Damage can be prevented. The filter holding piece 18 may be provided only on the first filter guide 15 side, or may be provided on both sides. Note that the filter 13 is detachably inserted in the direction of arrow X in FIG.

In addition, the indoor heat exchanger 11 housed in the main casing 10 has a return bend 21 attached to one side of the U-pipe 20 to form a zigzag flow path for guiding the refrigerant. An inspection cover 22 is detachably attached to the side of the main casing 10 opposite the return bend 21 of the indoor heat exchanger 11.

Among the plurality of return bends 21 provided in the indoor heat exchanger 11, a predetermined return bend 23
is extended toward the inspection lid 22 side, and the extended portion is formed at a predetermined angle (acute angle) θ upward with respect to the horizontal direction.
4 and 5 to form an inclined bent portion 23a (see FIGS. 4 and 5). The bent portion 23a of a predetermined return bend 23 is positioned so as to protrude toward the inspection lid 22 side than the other return bends 21, and the sensor holder 25 is attached to the bent portion 23a of the return bend 23.

The sensor holder 25 has a cylindrical shape as shown in FIG. 6, and houses a leaf spring 26 therein as a spring member, and the sensor 27 is elastically held by the leaf spring 26 in a detachable manner. The shape and structure of the leaf spring 26 is not limited to a waveform, and a plurality of shapes are possible. The sensor 27 is a variety of sensors, such as a thermostat for temperature control or antifreeze.

In this case, since the predetermined return bend 23 can have a sufficient length in the axial direction of the bent portion 23a, a binding band 28 is provided on this bent portion 23a,
The return bend 23 and the connecting pipes 29 (refrigerant inlet pipe and refrigerant outlet pipe) 29 to the heat exchanger 11 are bundled and fixed with the binding band 28, and the connecting pipes 29 can be prevented from breaking or being damaged due to an earthquake or the like.

Next, the operation of this air conditioner will be explained.

This air conditioner heat-exchanges indoor air sucked into the main body casing 10 from an air suction port 12 with an indoor heat exchanger 11 to turn it into cooling air or warm air.
The room is cooled and heated by blowing this cooling air or warm air into the room using an indoor blower (not shown).

The indoor heat exchanger 11 housed in the main body casing 10 of this air conditioner is constructed by extending a predetermined return bend 23 toward the inspection lid 22 side and bending the extended portion by a predetermined angle θ. The portion 23a is positioned so as to protrude toward the inspection lid 22 side from the other return bends 21. Moreover, the sensor holder 2 is attached to the inclined bent portion 23a of the predetermined return bend 23.
A sensor 27 is provided in the sensor holder 25.
Since the inspection lid 22 is elastically supported by a spring member such as a leaf spring 26 in a detachable manner, the inspection lid 22 can be attached with a screw 30 during maintenance inspection.
Once removed, the inclined sensor holder 25 is located close to the inspection lid 22, making it extremely easy to attach and detach the sensor 27. Therefore, even if the connection piping for other heat exchangers is arranged in a complicated manner on the inspection lid 22 side of the indoor heat exchanger 11, and the piping is in such a state that it is difficult for a worker's fingers or the like to reach the sensor holder 25, The sensor holder 25 can be easily attached and detached.

Next, a modification of the air conditioner according to this invention will be described.

The air conditioner shown in this modification has an improved mounting structure for the indoor heat exchanger 11 housed in the main body casing 10, and the sensor mounting structure for the indoor heat exchanger 11 is the first one. Since it is not different from what is shown in the figure, the explanation will be omitted.

The air conditioner shown in FIGS. 7 and 8 houses an indoor heat exchanger 11A and an indoor blower 32 driven by a fan motor 31 in a main body casing 10A, and
An air inlet 33 is formed on one side, and an air outlet 34 is formed on the opposite side.

The end plate 35 of the indoor heat exchanger 11A housed in the main body casing 10A is fixed to the partition plate 36 with mounting screws 37 or the like. In this case, the end plate 35 of the indoor heat exchanger 11A has attachment portions 35a at both ends.
is formed, and this mounting portion 35a is bent so as to expand toward the outside of the indoor heat exchanger 11A, and the bent mounting portion 35a engages with the inclined opposing mounting portion of the partition plate 36. I am forced to do it. By mounting the mounting screws 37 with the driver 38 in this engaged state, the indoor heat exchanger 11A is mounted and fixed to the partition plate 36 provided within the main body casing 10A. Note that the reference numeral 40 is an electrical component storage chamber.

In this air conditioner, since the end plate 35 of the indoor heat exchanger 11A is bent to open outward, when tightening the mounting screw 37 for attaching the indoor heat exchanger 11A to the partition plate 36, the driver 38 becomes easier to operate, and its screw tightening workability can be improved.

Therefore, the hand of the worker holding the driver 38 can be prevented from coming into contact with the heat exchange fins of the indoor heat exchanger 11A, so damage to the hands and fingers can be prevented and the mounting screws 37 can be reliably tightened. Also,
The end plate 35 of the indoor heat exchanger 11A has a mounting portion 35a.
Since it is bent to open outward, the attachment part 3 of the end plate 35
Since 5a also serves as a blower guide and guides the blower,
Air can also be efficiently guided to the end portion of the indoor heat exchanger 11A where air distribution is poor.

Although the embodiment of this invention has been described with respect to an indoor unit of an air conditioner, it can be similarly applied to an outdoor unit.

[Effect of idea]

As described above, in the air conditioner according to this invention, a predetermined return bend of the heat exchanger is extended toward the inspection lid side, the extended portion is bent at a predetermined angle, and a sensor is attached to this bent portion. Since a sensor holder is provided to support the sensor, it is possible to move the sensor holder mounting position closer to the inspection lid side and install the sensor holder at an angle, and by removing the inspection lid, the sensor can be easily attached and removed. can. Even if the sensor attachment/detachment operation is simplified, the sensor attachment structure does not become complicated, and a simple sensor attachment structure can be maintained.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the air conditioner according to this invention, Fig. 2 is an external perspective view of the air conditioner, and Fig. 3 is a mounting structure for a filter provided in the air conditioner. A partial perspective view, FIG. 4 is a diagram showing the sensor mounting structure to the heat exchanger incorporated in the air conditioner, FIG. 5 is a diagram showing the return bend that constitutes the sensor mounting structure, and FIG. FIG. 7 is a sectional view showing an example of the sensor mounting structure, FIG. 7 is a sectional view showing a modification of the air conditioner according to the invention, and FIG. 8 is an indoor heat exchanger incorporated in the air conditioner according to the modification. 9 and 10 are diagrams showing a conventional air conditioner, respectively. 10,10A...Main casing, 11,11
A...Indoor heat exchanger, 12...Air suction port, 1
3...Air filter, 15, 16...Filter guide, 18...Filter holding piece, 20...U pipe, 21, 23...Return bend, 22...Inspection lid, 23a...Bend portion, 25... Sensor holder, 26... leaf spring, 27... sensor, 31...
Fan motor, 32... Indoor blower, 33... Air inlet, 34... Air outlet, 35... End plate,
35a...Mounting part, 36...Partition plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An air conditioner that houses a heat exchanger in a main body casing, a sensor is attached to the return bend of the heat exchanger, and is provided with an inspection lid facing the return bend side. A predetermined return bend of the heat exchanger is extended toward the inspection lid, the extended portion is bent at a predetermined angle, and a sensor holder for supporting the sensor is provided at this bent portion. air conditioner. 2. The extension part of the return bend is bent at an acute angle with respect to the horizontal direction, and the sensor holder has a leaf spring housed inside, and the leaf spring holds the sensor detachably.Claim 1 of Utility Model Registration Air conditioner as described in section.