JP3230934B2 - Air conditioner - Google Patents

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 folding type heat exchanger and constituting, for example, an indoor unit.

[0002]

2. Description of the Related Art An air conditioner generally used comprises an indoor unit arranged in a room to be air-conditioned and an outdoor unit arranged outdoors, and these units are connected to each other by a refrigerant pipe and electric wiring. .

[0003] From the user's side, there is a great demand for downsizing these units and reducing the installation space, and it is necessary for each manufacturer to increase the heat exchange capacity while satisfying such conditions.

[0004] As one of the solutions, especially in an indoor unit, a structure in which a heat exchanger is bent in multiple stages has been proposed, and a height dimension of the heat exchanger itself is suppressed while securing a heat exchange area. The height of the unit body has been reduced.

[0005]

By the way, in the heat exchanger, heat radiation fins having a substantially rectangular shape whose longitudinal direction is extremely long compared to the width direction are arranged side by side with a narrow gap. An end plate is provided at the end.

A heat exchange pipe penetrates the end plate and the radiating fin, and is bent along the longitudinal direction of the radiating fin. Needless to say, the longitudinal direction of the radiation fins is arranged along the vertical direction.

When a cooling operation is performed in such an air conditioner, drain water is generated in the heat exchanger of the indoor unit, and the drain water flows down when the water droplet becomes large. Then, the drain water flows down and collects in a drain pan arranged below the heat exchanger, and is discharged to the outside from here.

If the heat exchanger is of a simple flat plate as in the prior art, the radiating fins constituting the heat exchanger are generated here since the fins are arranged with their longitudinal directions substantially vertical. The drain water flows down relatively smoothly.

However, in the above-mentioned bending type heat exchanger, if the bent shape is not taken into consideration, the generated drain water stays in the bent portion and does not flow down smoothly. If the drain water stays in the middle of the heat exchanger, on the contrary, the flow of the heat exchange air is hindered, and the heat exchange efficiency is reduced.

[0010] The end plate is supported by a heat exchange base plate provided on the unit main body, and the heat exchanger is disposed on the unit main body via the base plate. The end plate is also bent in accordance with the radiating fins. At this bent portion, drain water may enter the gap between the end plate and the heat exchange base plate, and smooth drainage may be impaired.

Further, for example, the applicant has provided a heat exchanger which is bent in an inverted V-shape to be constituted by a front heat exchanger and a rear heat exchanger. In constructing such a heat exchanger, a notch is provided in advance from the one side edge to the vicinity of the other side edge of the heat radiation fin, and this notch is bent to form an inverted V-shape. Thus, a front heat exchanger and a rear heat exchanger are obtained. Therefore, the notch portion is changed to a notch space portion which is expanded in a substantially V shape.

If such a notched space portion is left as it is, so-called raw air that does not pass through the heat exchanger from the space portion, enters the ventilation passage, and forms dew in the ventilation passage. At the same time, a vortex is generated in this space, which increases the blowing noise.

For this reason, a sealing member has conventionally been inserted into this space to prevent air from entering the space. However, since the sealing member is in contact with the heat exchanger, a temperature difference from the suction air causes a difference. In addition, dew condensation occurs on the seal member itself.

There is a possibility that the condensed water falls directly from the seal member to the blower fan and is blown out together with the heat exchange air into the room to be air-conditioned. The present invention has been made in view of the above circumstances, and an object thereof is to provide a heat exchanger of a bending type, assuming that the heat exchanger is provided with an end plate, and a heat exchanger. An object of the present invention is to provide an air conditioner in which drainage of drain water in a heat exchange base plate to be supported, particularly in a bent portion, is smoothly performed to improve drainage performance and heat exchange efficiency.

[0015]

[0016]

In order to satisfy the above object, an air conditioner according to the present invention is characterized in that, in the first aspect, an air conditioner main body, and an air conditioner disposed inside the air conditioner main body and having a cross section at both end portions. L-shaped and formed outside the heat exchanger end face
With end plates extending , a number of radiating fins are arranged side by side with a narrow gap between these end plates, and a heat exchange pipe is penetrated through these end plates and the radiating fins ,
The upper part is bent to form an inverted V shape in side view,
Heat exchanger consisting of heat exchanger and rear heat exchanger
And inside the heat exchanger so that it is covered by the heat exchanger
In the air conditioner having an indoor blower is constructed by the above front heat exchanger, causes along the longitudinal direction of the heat radiation fins in the vertical direction, the inner halfway along the vertical direction
Consists connecting bodies of three or more heat exchangers small portion that is bent in multiple stages by a predetermined angle to the side, corresponding to the heat exchanger subsection
End plate small part extending outward from the heat exchanger end face of the end plate
Each of the end plate small portions corresponding to the upper heat exchanger small portion has its lower end protruding forward from the upper end of the end plate small portion corresponding to the lower heat exchanger small portion. It is characterized by.

[0017] As claimed in claim 2, the air conditioner of claim 1, wherein
The end plate small part corresponding to each heat exchanger small part in the machine ,
The heat exchange base plate is supported by a support portion of the heat exchange base plate provided in the air conditioner main body. The end protruding forward from the upper end of the lower support part supporting the part
It is characterized in that it is formed in the same shape as the small plate portion .

[0018]

[0019]

In the present invention , the lower end of the upper end plate small portion is projected forward from the upper end portion of the lower end plate small portion, and drain water is surely transferred from the upper end plate small portion to the lower side end plate small portion. To be dropped.

[0020]

[0021]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an indoor unit of the air conditioner is configured. Unit body 1, which is the air conditioner body
Is composed of a front panel 2 and a rear plate 3. Suction ports 2a and 2b are opened on the front side and the upper side of the front panel 2, and grills 4a and 4b are fitted into the respective openings.

In the unit body 1, each of the suction ports 2a, 2
An air filter 5 which is bent in a gentle arc shape so as to face each other over b, and a heat exchanger 6 which is formed in an inverted V-shape as described later are arranged.

The lower part on the rear side of the heat exchanger 6 is inserted into a rear drain pan 7a integrally formed with the rear plate 3, and the lower part on the front side is inserted into a front drain pan 7b. Thereafter, the front drain pans 7a and 7b communicate with each other via a communication passage (not shown). Below the front drain pan 7b, an outlet 8 is formed which opens to the lower part on the front side of the unit body 1.

An internal position of the heat exchanger 6 formed in an inverted V-shape, that is, a cross flow fan 9 as a blower fan constituting an indoor blower is arranged so as to be covered by the heat exchanger.

The upper end of the rear plate 3 is connected to the rear end of the upper inlet 2b of the front panel 2, and the rear drain pan 7
a, the lowermost end portion extends from the side of the cross flow fan 9 so as to extend to the outlet 8. And the rear drain pan 7a
The outer bottom surface also serves as a nose for the cross flow fan 9.

Next, the heat exchanger 6 will be described in detail. As shown in FIG. 2, the heat exchanger 6 includes a plurality of radiating fins 10 arranged side by side with a small gap therebetween.
End plates 11 formed at both ends of the radiating fins 10 and bent into an L-shaped cross section, and heat exchange pipes 12 penetrating the end plates 11 and the radiating fins 10 and fitted by expanding means. Consists of

The radiating fin 10 is previously formed into a straight shape by press punching, and a notch 13 is provided in the upper portion of the fin from one side edge to a side slightly short of the other side edge. A plurality of notches 14 are provided at predetermined intervals from the other side edge to a side slightly closer to one side edge.
Are provided at predetermined intervals.

From the state in which the heat exchange pipe 12 is fitted through the heat radiation fin 10 and the end plate 11, the notch 1
3 is urged in a clockwise direction, and each of the cutouts 14... Below this are bent inward at predetermined angles in multiple stages to form a heat exchanger 6 having a shape as shown in the figure, that is, an inverted V-shape. obtain.

The heat exchanger 6 is bent at the notch 13 at the uppermost portion as a boundary, and is folded at a rear heat exchanger 6A located at the rear side of the unit body 1 and at a multi-stage located at the front side. And the front heat exchanger 6B.

In particular, the front heat exchanger 6B, which is bent in multiple stages, has a plurality of (here, five sets) small heat exchangers along the vertical direction, which is the bending direction, and with the cut portion 14 as a boundary. It consists of a continuous body of parts 16a to 16e. Further, the end plate 11 corresponding to these heat exchanger small parts 16a to 16e is located outside the end face of the heat exchanger 6B.
End plate small portions 11a to 11e are provided , respectively .

Still referring to the front heat exchanger 6B, the upper heat exchanger small part is bent while being displaced forward from the heat exchanger small part adjacent to the lower part of the heat exchanger small part.

For example, the lower end of the uppermost heat exchanger small portion 16a projects forward from the upper end of the second-stage heat exchanger small portion 16b. And the second stage heat exchanger small part 1
The lower end of 6b protrudes forward from the upper end of the third heat exchanger small part 16c.

Similarly, the relation between the lower end and the upper end of the heat exchanger small part adjacent to the upper and lower parts is set. Therefore, in each of the end plate small portions 11a to 11e provided corresponding to each of the heat exchanger small portions 16a to 16e, the configuration of the end plate small portions adjacent to the upper and lower portions is the same as the configuration of the heat exchanger small portion. become.

That is, the lower end of the uppermost end plate small portion 11a projects forward from the upper end of the lower second end plate small portion 11b. The lower end of the second end plate 11b projects forward from the upper end of the third end plate small portion 11c. The same applies hereinafter.

The heat exchanger 6 has the unit body 1
Are supported by a pair of heat exchange base plates 17, 17 arranged opposite to the rear plate 3. To explain,
The end plate small portion 11f constituting the rear heat exchanger 6A is supported by the support portion 17f of the heat exchange base plate 17, and the front heat exchanger 6B
Are supported by the support portions 17a to 17e of the heat exchange base plate 17.

Therefore, the support portions 17a to 17a
f is formed in exactly the same plane as the end plates 11a to 11f described above. In other words, the rear surface side is a support portion 17f having a flat inclined surface for supporting the rear heat exchanger 6A, with the uppermost portion formed as an acute angle as a boundary.

From the top to the front, the front side supports the front heat exchanger 6B, and from the top to the lower support 17.
A plurality of inclined surfaces having different inclination angles are formed over a to 17e.

Therefore, the lower end portion of the uppermost support portion 17a projects forward from the upper end portion of the second-stage support portion 17b, ie, a so-called overhang state. Hereinafter, similarly, the positional relationship between the vertically adjacent supporting portions is set.

As described above, the heat exchange base plate 17 supports the left and right end plates 11 on the left and right sides of the heat exchanger 6, but this also includes a bearing for supporting the blower fan 9. The base plate is also used. Therefore, a hole 18 for mounting the bearing is provided.

As shown in FIGS. 1 and 3, an insertion member 20 is provided along a notch space 13 which is a bent portion between the rear heat exchanger 6A and the front heat exchanger 6B. As shown in FIG. 4, the insertion member 20 includes a hard synthetic resin material 20 a formed in a substantially T-shaped cross section and a bag having a rectangular cross section integrally provided at one vertical end of the hard synthetic resin material 20 a. And a soft synthetic resin material 20b.

One vertical end of the soft synthetic resin material 20b and the hard synthetic resin material 20a integrally provided with the soft synthetic resin material 20b constitute a seal portion 21 forcibly inserted into the cutout space 13. I do.

The horizontal piece portion of the hard synthetic resin material 20a is bridged over the upper ends of the front heat exchanger 6B and the rear heat exchanger 6A, and a drain receiving portion 22 for receiving drain water generated therefrom is provided. Constitute.

Then, based on a horizontal line orthogonal to the vertical piece of the hard synthetic resin material 20a, the angle α ° of the front drain receiving part 22 from the upper end of the vertical piece and the drain receiving part 22 from the upper end of the vertical piece to the rear. Each of the angles β ° of the portion 22 is inclined downward from the front side toward the rear side.

Again, as shown in FIGS. 1 and 3, at least both end portions of the insertion member 20 are connected to the rear heat exchanger 6.
A and a wire-like clip 23 that is laid over the uppermost heat exchange pipes 12 of the front heat exchanger 6B.
As a result, it is forcibly pressed and supported by the notch space 13.

Actually, the clip 23 comes into contact with the drain receiving portion 22 of the insertion member 20, and the sealing portion 21 is inserted into the cutout space portion 13 to fill the space. In this state, the drain receiving portion 22 is inclined such that the connection portion with the front heat exchanger 6B is upper and the connection portion with the rear heat exchanger 6A is lower.

The heat exchanger 6 is attached to the heat exchange base plate 17 by fixing the fixing holes 24a provided in the right end plate small portions 11b and 11d of the heat exchanger 6 to the heat exchange base plate 1.
7 is inserted into a fixing projection 24 a that is integrally formed with the projection 7, and the left end plate is locked and fixed to a locking claw 25 formed on the heat exchange base plate 17. The upper left portion is screwed and fixed to a screw hole 24c provided in the support portion 17b.

Thus, for example, a cooling operation is performed. The compressor of the outdoor unit (not shown) is driven to perform a refrigeration cycle operation, and the cross flow fan 9 of the indoor unit is driven. The high-temperature and high-pressure refrigerant discharged from the compressor is supplied to the heat exchanger 6
It is led to.

The heat exchange air is introduced from the suction ports 2a and 2b, and guided to the heat exchanger 6 via the air filter 5,
The heat radiation fins 10 are led out after conducting through the gaps between the heat radiation fins 10 and contacting the heat radiation fins 10 and the heat exchange pipes 12.

The refrigerant is guided to the heat exchanger 6 and evaporates while passing through the heat exchange pipe 12. These heat exchange pipes 1
The heat exchange air flowing between the heat radiating fins 2 and the heat radiating fins 10 is deprived of latent heat of evaporation and the temperature thereof is reduced, and is changed to cool air in a state of being led out of the heat exchanger 6. Then, the air is blown from the air outlet 8 to the room to be air-conditioned through the cross flow fan 9 to perform a cooling operation.

With the cooling operation, the heat exchange air is cooled below the dew point, and the moisture contained in the air is condensed and changed into drain water, and adheres to the heat exchanger 6. When the water droplets of the drain water are enlarged, they finally flow down and drain pan 7
a, 7b.

Particularly, on both sides of the front heat exchanger 6B,
Drain water generated in the pipe or the end plate small portions 11a to 11e flows down along the end plate small portions 11a to 11e. Here, the side surfaces of the heat exchanger small portions 16a to 16e and the end plate small portions 11a to 11e have a lower end on the upper side projecting forward than an upper end on the lower side, so that the drain is drained from the upper side to the lower side. Water flows smoothly without interruption.

Also, the support portions 7a to 17e of the heat exchange base plate 17 supporting the end plate small portions 11a to 11e have the same inclined surface configuration as the heat exchanger small portion and the end plate small portion. Water is applied to the end plate small portions 11a to 11e and the support portion 1.
A reliable drain water treatment can be obtained without entering the gaps between 7a to 17e.

Then, temporarily, the end plate small portions 11a to 11a
Even if drain water is generated between the e and the supporting portions 17a to 17e, it is possible that the drain water smoothly flows from the upper side to the lower side and directly drops to the lowermost portion of the heat exchange base plate 17. Absent.

On the other hand, the interposition member 20 inserted in the notch space 13 between the front heat exchanger 6B and the rear heat exchanger 6A.
Prevents the heat exchange air from being guided to the notch space, and smoothly guides the heat exchange air to the rear heat exchanger 6A side, thereby eliminating the generation of noise.

Even if drain water is generated in the insertion member 20, the drain receiving portion 22 is inclined downward from the front heat exchanger 6B toward the rear heat exchanger 6A. In addition to the smooth flow of the heat exchange air to the side heat exchanger 6A, the heat exchange air has a so-called rectifying function to promote a smooth flow of the heat exchange air.

[0056]

As described above, according to the present invention , in claim 1, the lower end of the small end plate corresponding to the small part of the upper heat exchanger corresponds to the small part of the lower heat exchanger. Since it protrudes forward from the upper end of the small end plate, it is a bent type heat exchanger, but drain water is reliably and smoothly drained at the end plate that constitutes the heat exchanger, improving drainage. And heat exchange efficiency can be improved.

In the second aspect, the lower end of the upper support portion of the heat exchange base plate for supporting the heat exchanger projects forward from the upper end portion of the lower support portion. Even if drain water is generated during this time, the drain water drops from the upper support portion to the lower end plate small portion, and can be prevented from directly dropping to the lowermost portion. Therefore, drainage treatment is performed reliably and smoothly in the heat exchange base plate, thereby improving drainage.

[0058] Further, since to form bent heat exchanger in three or more multiple stages, on which attained miniaturization of shortened to the apparatus body the height of the heat exchanger, it reliable drain water treatment
You.

[0059]

[0060]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an indoor unit of an air conditioner, showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view of a heat exchanger and a heat exchange base plate of the embodiment.

FIG. 3 is a side view, partially omitted, for explaining an assembling configuration of the heat exchanger and the heat exchange base plate of the embodiment.

FIG. 4 is a longitudinal sectional view of the interposition member of the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Air conditioner main body (unit main body), 11 ... End plate, 1
0: radiation fins, 12: heat exchange pipe, 6: heat exchanger,
16a to 16e: heat exchanger small part, 11a to 11e: end plate small part, 17: heat exchange base plate, 17a to 17e: support part,
6B: Front heat exchanger, 6A: Rear heat exchanger, 13: Notch space portion, 21: Seal portion, 22: Drain receiving portion, 20
… Interposed member.

Claims (2)

(57) [Claims] 1. An air conditioner main body, and an L-shaped cross section disposed in both ends of the air conditioner main body.
End plates extending outward from the end surfaces of the heat exchanger, and a number of radiating fins are arranged between the end plates with a small gap therebetween. with the heat exchange pipe is penetrating into, folding the upper
Bent to form an inverted V shape in side view, the front heat exchanger and
A heat exchanger consisting of a rear heat exchanger and this heat exchange
The room that is configured to be covered by the heat exchanger at the inside position of the vessel
In the air conditioner provided with a blower , the front heat exchanger extends the longitudinal direction of the radiation fins in the vertical direction, and inward along the vertical direction.
It consists of a series of three or more heat exchanger small parts that are bent in multiple stages by a predetermined angle, and corresponds to the heat exchanger end face of the end plate corresponding to this heat exchanger small part.
End plate small portions extending outwardly, and the lower end plate portion corresponding to the upper heat exchanger small portion has a lower end portion corresponding to the lower heat exchanger small portion. An air conditioner characterized by protruding forward from an upper end of a section. 2. An end plate small portion corresponding to each of said heat exchanger small portions is supported by a support portion of a heat exchange base plate provided in said air conditioner main body. An end plate small portion in which a lower end of an upper support portion supporting the upper end plate small portion projects forward from an upper end portion of a lower support portion supporting the lower end plate small portion;
The air conditioner according to claim 1, wherein the air conditioner is formed in the same shape .