JP2601095B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger mounted on an air conditioner or the like and performing heat exchange.

[0002]

2. Description of the Related Art FIGS.
No. 91 is a conventional heat exchanger, FIG. 13 is a perspective view, FIG. 14 is a side view, and FIG. 15 is a partially enlarged view of FIG. 14, and a spacer inserted into a bent portion of the heat exchanger. A part of the heat exchange pipe is omitted so as to show the condition.
In the figure, reference numeral 1 denotes a heat exchanger body of a heat exchanger mounted on an air conditioner, which is cut into a small size so as to fit in the air conditioner compactly, and the cut is widened and folded into two. 2 is a notch formed in the bent portion of the heat exchanger body 1, 3 is a spacer for holding the notch 2 and preventing a decrease in the heat exchange rate of the heat exchanger body 1, and 3b is a spacer. Front piece of spacer 3, 3c
Is a rear piece and 3d is a front piece 3b and a rear piece 3c of the spacer 3.
And 3e are hanging pieces extending downward from the horizontal piece 3d. Numeral 4 denotes a fin.
Are arranged in parallel to promote heat exchange. 4a is an upper fin of the upper and lower fins divided into two by bending the heat exchanger body 1 into two, and 4b is provided at a substantially central portion of a portion of the upper fin 4a facing the cut portion 2. The locking portion 4c is a notch provided at the end of the portion of the upper fin 4a facing the cut 2 and the projection 4d is a projection formed between the locking portion 4b and the notch 4c. Reference numeral 5 denotes a heat exchange pipe, and reference numeral 6 denotes a vent pipe of the heat exchange pipe 5.

Next, the operation will be described. The heat exchanger is folded in two as shown in FIG. 13 so as to fit in the air conditioner compactly. At this time, a cut portion 2 is formed in a portion where the heat exchanger body 1 is bent. In this state, the notch 2 allows the outside air to escape without passing through the heat exchanger main body 1 and causes a decrease in the heat exchange rate.
Usually, a spacer 3 made of plastic or metal is inserted into the cutout 2. The spacer 3 holds the cut portion 2 and also serves to keep the bent angle of the heat exchanger body 1 constant. In order to attach the spacer 3 to such a heat exchanger body 1, as shown in FIG.
The rear piece 3c and the front piece 3b of the spacer 3 are in contact with the locking part 4b and the notch part 4c of the spacer 3, respectively, so that the convex part 4d of the fin 4 is sandwiched between the spacer 3 and the side of the heat exchanger body 1. Insert by sliding more and fix. Moreover, since the rear piece 3c of the spacer 3 is engaged with the locking portion 4b of the fin 4 by adopting such a shape, the spacer 3 is prevented from dropping from the notch 2. Note that a vent pipe 6 is provided on the right side of the heat exchanger body 1 so as to straddle the cut portion 2, and the spacer 3 cannot be inserted from the right side or the front side of the heat exchanger body 1. The spacer 3 can be inserted only from the left side of the heat exchanger body 1.
However, FIG. 13 shows a state in which the spacer 3 is inserted from the right side of the heat exchanger body 1 for convenience of explanation.

[0004] When the air conditioner equipped with the heat exchanger constructed as described above is operated, dust and dust are accumulated between the fins and accumulate on the spacer 3. Also,
Drain is generated and flows along the fins 4 to the drain receiver provided below the heat exchanger. However, when the drain generated in the upper fins 4a flows downward, the drain is generated on the spacer on the way. Then, it flows on the spacer, flows again through the lower fin, and flows to the drain receiver.

As a heat exchanger of another air conditioner, those disclosed in Japanese Patent Application Laid-Open Nos. 3-55591 and 3-5637 have been proposed.

[0006]

Since the conventional heat exchanger is constructed as described above, when attaching the spacer to the heat exchanger body, the spacer is slid from the left side of the heat exchanger body. The fins have to be inserted, so that there is a problem that the assemblability is poor in the manufacturing process, and the fins are deformed or damaged. Further, since dust and dust easily accumulate on the upper portion of the spacer and cannot be removed, there is a problem in that an odor is generated when the air conditioner is operated.

In another conventional heat exchanger of an air conditioner disclosed in Japanese Patent Application Laid-Open No. 3-55491, the contact portions between the spacers and the plate fins of the heat exchanger are both metal,
When the air conditioner is operated for cooling or heating to change the temperature, the spacer and the heat exchanger have different linear expansion coefficients, so that there is a problem that a squeaky sound is generated when the air conditioner contracts or expands.

Further, the spacer of the heat exchanger of the other conventional air conditioner disclosed in Japanese Patent Application Laid-Open No. 3-5637 has low adhesion to the heat exchanger and is relatively close to the gap between the spacer and the heat exchanger. There is a problem in that air having a humidity of less than 100% enters and heat exchange efficiency is deteriorated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heat exchanger in which a spacer can be easily mounted. To obtain the heat exchanger of the air conditioner, which can prevent the generation of the squeaking noise generated from the part of the heat exchanger of the spacer that comes into contact with the plate fin, improve the efficiency by heat exchange, and reduce the power consumption. The purpose is to:

[0010]

According to the first aspect of the present invention, there is provided a heat exchanger.
The notch is cut, the notch is expanded and bent, and the heat exchanger body composed of a plurality of fins through which the heat exchange pipe is penetrated, and the heat exchanger body is inserted into the bent and opened notch portion of the heat exchanger body to contact the fin. And a spacer that covers the cut portion, and a stopper that locks the spacer to the heat exchange pipe or the heat exchanger body and holds the spacer to the heat exchanger body.

According to a second aspect of the present invention, in the heat exchanger of the first aspect, the stopper is made of a spring material.

The heat exchanger according to claim 3 is provided with a notch,
The notch is expanded and folded into two, and a heat exchanger body composed of a plurality of fins through which a heat exchange pipe is penetrated, and inserted into the bent and opened notch portion of the heat exchanger body to contact the fin. A spacer that covers the notch portion, a spacer support portion provided on both sides in the longitudinal direction of the spacer, and a retaining portion that holds down the spacer support portion and that is provided on a locking portion provided on both sides of the heat exchange pipe or the heat exchanger body. And a stopper that locks and holds the spacer to the heat exchanger body.

According to a fourth aspect of the present invention, a plurality of plate fins each having a heat exchange pipe penetrated therein are provided with cuts, and the cuts are expanded to bend the plate fins, and a spacer is provided in the expanded space. In the heat exchanger to be mounted, the spacer is provided with a soft resin on the outside, and a portion supporting the soft resin is formed of a hard resin.

According to a fifth aspect of the present invention, the portion where the spacer contacts the plate fillet is formed of a soft resin having a substantially V-shaped cross section, and a central portion of the substantially V-shaped cross section is formed by integral extrusion of a substantially I-shaped hard resin. It was done.

According to a sixth aspect of the present invention, in the heat exchanger, the hard resin portion of the spacer is substantially T-shaped, and the tip of the substantially T-shaped portion extends to the vicinity of the substantially V-shaped soft resin.

[0016]

In the heat exchanger according to the first aspect, the spacer is mounted on the cut portion without deforming or damaging the fin end face by the spacer.

In the heat exchanger of the second aspect, the stopper made of a spring material is securely pressed down and attached.

According to a third aspect of the present invention, in the heat exchanger, the spacer is provided on the spacer by the spacer supporting portion provided on the spacer and a stopper for holding the spacer supporting portion and locking the spacer and the heat exchanger body. It is easily inserted from the front or side, and prevents the spacer from slipping or coming off after the spacer is inserted.

According to a fourth aspect of the present invention, the portion of the heat exchanger that contacts the plate fins is a soft resin portion of the spacer, so that even if the air conditioner is operated for cooling or heating to change the temperature, the space of the spacer is reduced. It is possible to prevent the occurrence of creaking noise in the soft resin portion.

According to the heat exchanger of the fifth aspect, there is no contact surface between the metals, and even if there is a temperature change, there is no noise due to creaking and the rigidity of the spacer is improved. it can.

The heat exchanger according to claim 6 can maintain the shape of the soft resin in the shrinking direction after molding, and can withstand thermal deformation.

[0022]

[Embodiment 1] Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1, 2, and 3. FIG. 1 is an enlarged side view of a bent portion of the heat exchanger, FIG. 2 is an enlarged side view of FIG. 1, and a side view of a spacer inserted in the heat exchanger for easy viewing, and FIG. 3 is a bent side of the heat exchanger. It is the perspective view which expanded the part which was done. 1 and 2, reference numeral 1 denotes a heat exchanger body of a heat exchanger mounted on the air conditioner, which is folded in two so as to fit in the air conditioner compactly. Reference numeral 2 denotes a notch formed in the bent portion of the heat exchanger main body 1, and 3 is formed in a V-shape to hold the cut 2 and prevent a decrease in the heat exchange rate of the heat exchanger main body 1. A spacer made of plastic or metal. Reference numeral 3a denotes a spacer supporting portion provided at both ends in the longitudinal direction of the spacer. Reference numeral 3f denotes a positioning provided on the spacer 3. When the spacer is inserted, the positioning 3f hits a fin so that the spacer does not go deeper. ing. Numerals 4 denote fins which are arranged in multiple layers in parallel to promote heat exchange of the heat exchanger body 1.
Reference numeral 4a denotes an upper fin, and 4e denotes a lower fin of the upper and lower fins 4 divided by folding the heat exchanger body 1 into two. 5 is a heat exchange pipe, and 6 is a vent pipe of the heat exchange pipe 5. Reference numeral 7 denotes a stopper made of a heat conductive spring steel, as shown in FIG.
And straddle the heat exchange pipe 5,
The spacer 3 and the fin 4 are locked. 8
Is a gap provided between the upper fin 4a and the upper portion of the spacer 3, and 9 is a sheet metal having a thickness of about 1 mm for increasing the strength of the fin 4 and fixing the heat exchanger 1, usually 0.1 mm.
The fin 4 having a thickness of about mm is protected and attached to both side surfaces of the heat exchanger body 1.

Next, the operation will be described. Since the heat exchanger mounted on the air conditioner is limited by the thickness and volume of the air conditioner, a cut is made in the fin 4 as shown in FIG.
This cut is expanded and folded in two. A cut portion 2 is formed in the bent portion where the cut is widened, and when the air conditioner is operated when the space is left as it is, the outside air sucked into the heat exchanger becomes the cut portion of the heat exchanger body 1. 2, which leads to a decrease in the heat exchange rate. Therefore, a spacer 3 is inserted into the cutout 2 to prevent outside air from entering. Further, a heat exchange pipe 5 passes through the heat exchanger main body 1 through the fins 4, and is folded back using a vent pipe 6 on a side surface of the heat exchanger main body 1. Although the fin 4 is divided into two by bending the heat exchanger main body 1, the vent pipe 6 also passes through the right side surface between the upper fin 4a and the lower fin 4e, so that the spacer 3 is moved from the right side. Cannot be inserted. It is desirable that the spacers 3 can be inserted from all directions. However, in the heat exchanger configured as described above, in the manufacturing process, the V-shaped spacers 3 are attached to the front and left sides of the heat exchanger body 1. It can be easily inserted by pushing it in from below. Also, since the upper and lower surfaces of the spacer 3 are flat without protrusions such as locking portions, the fins 4 are not deformed or damaged when the spacer 3 is inserted. After the spacer 3 is inserted, the spacer 3 is held down by straddling the spacer supporting portions 3a provided at both ends in the longitudinal direction of the spacer 3, and C
The spacers 3 and the fins 4 are locked by sandwiching the vent pipes 6 in the upper fins 4a and the lower fins 4e by the stoppers 8 having a U-shape. Spacer support 3a
Since the width is different from that of the spacer 3, there is no fear of being disengaged or laterally displaced by locking by the stopper 7.

The upper surface of the spacer 3 stopped at a predetermined position by the positioning 3b and the cut portion 2 of the upper fin 4a
A gap portion 8 is formed between the lower end surface facing the bottom surface. The drain generated in the heat exchanger by the operation of the air conditioner flows downward along the upper fins 3 a in the upper fins 3 a and reaches the upper part of the spacer 3. Dust and dust accumulate on the upper part of the spacer 3 due to the operation of the air conditioner. However, the presence of the gap 8 allows the drain to wash away the dust and dust. Since the upper part of the spacer 3 is always kept clean, it is possible to prevent the generation of offensive odor caused by dust and dust when the air conditioner is operated. The drain that has flowed to the upper part of the spacer 3 and washed away dust and dust is removed by the lower fin 4e.
, And is collected in a drain receiver provided below the heat exchanger.

Embodiment 2 FIG. In the first embodiment, the spacer supporting portions are provided at both ends in the longitudinal direction of the spacer, and the spacers are engaged with the fins by the stoppers.
g is integrally formed, and a spacer 3 itself is provided with a stopper 3g, and is a perspective view of FIG.

In the heat exchanger configured as described above, the spacer 3 can be easily inserted into the cut portion 2 from the front of the heat exchanger body 1, and the mounting is completed at the same time as the insertion of the spacer 3. Efficiency, labor saving, and cost reduction.

Embodiment 3 FIG. In the first embodiment, the positioning 3f for stopping the spacer 3 at a predetermined position is configured as shown in FIG. 1, but the positioning 4f may be provided at a portion of the lower fin 4e facing the cutout 2 as shown in FIG. it can.

Embodiment 4 FIG. In the first embodiment, the positioning 3f for stopping the spacer 3 at a predetermined position is configured as shown in FIG. 1, but it may be provided on the upper surface of the spacer 3 as shown in FIG.

Embodiment 5 FIG. Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings. FIG.
FIG. 8 is an enlarged side view of a main part of the heat exchanger, and FIG. 8 is an exploded perspective view of the heat exchanger. In the figure, reference numeral 3 denotes a spacer, a portion in contact with the plate fin 4 is a substantially V-shaped soft resin 3h, and a substantially I-shaped hard resin 3i is provided at the center of the substantially V-shaped resin.
And are integrally extruded. 12 is a plate fin 4
It is a cut surface formed by cutting to bend
Reference numeral 7 denotes a stopper for attaching the spacer 3 to the heat exchanger 1, and is formed of a spring material.

Next, the operation will be described. 7 and 8, the procedure of mounting the spacer of the heat exchanger of the air conditioner is as follows. After folding the heat exchanger 1 into a square shape, press the spacer 3 from the front of the heat exchanger 1. Put in. At this time, the spacer 3 is stabilized where the substantially V-shaped soft resin 3h of the spacer 3 hits the cut surface 12 formed on the plate fin 4. Next, by attaching the stopper 7 to the pipe of the heat exchanger 1 while sandwiching both ends of the spacer 3, the attachment of the spacer 3 to the heat exchanger 1 is completed. At this time, a substantially I-shaped hard resin 3
By providing i, the rigidity of the entire spacer 3 is increased, and the spacer 3 can be stably attached without fixing at only both ends of the spacer 3 and without lifting near the center. In this embodiment, the substantially V-shaped soft resin 3h and the substantially I-shaped hard resin 3i
Was an integral extrusion molding, but it goes without saying that they may be separated.

Embodiment 6 FIG. In the fifth embodiment, the hard resin portion of the spacer 3 is formed in a substantially I-shape. However, as shown in FIG.
j, and the tip of the substantially T-shaped portion is set to the vicinity of the substantially V-shaped soft resin, so that the shape of the substantially V-shaped soft resin 3h in the shrinking direction after molding is maintained, and the air conditioner is operated for cooling or heating. And the same effects as those of the fifth embodiment can be obtained.

Embodiment 7 FIG. Hereinafter, a seventh embodiment of the present invention will be described with reference to the drawings. FIG.
Is a longitudinal sectional view of the air conditioner main body with the spacer attached, and FIG. 11 is an enlarged view of a bent portion of the heat exchanger.

In FIGS. 10 and 11, reference numeral 1 denotes a heat exchanger, which comprises an upper heat exchanger 1a and a lower heat exchanger 1b. 4 is a fin, 5 is a heat transfer tube, 22 is a fan, 23
Is a front panel of the air conditioner, and 24 is a filter.
Reference numeral 3 denotes a spacer, and the spacer 3 includes a hard plastic portion 3k and a soft plastic portion 3m. This spacer 3 is used to close a gap generated in a bent portion of the upper heat exchanger 1a and the lower heat exchanger 1b.
The soft plastic part 3 m is arranged in close contact with the heat exchanger 1.

Next, the operation will be described. When the air with a relative humidity of less than 100% is sucked from the front panel 23 of the air conditioner, dust and the like in the air are removed when passing through the filter 24, the upper heat exchanger 1a and the lower heat exchanger 1b. It is sucked into. At this time, the relative humidity is 100
% Of the air is converted into air having a relative humidity of 100%, and is sent from the air conditioner to the room by the fan 22 rotating to perform air conditioning of the room. In the spacer 3, since the soft plastic portion 3m is in close contact with the heat exchanger 1 side, air having a relative humidity of less than 100% is not sent to the fan 22 side, and only air having a relative humidity of 100% is sent. At the same time, the angle between the upper heat exchanger 1a and the lower heat exchanger 1b is kept constant due to the hard plastic part 3k.

Embodiment 8 FIG. In the above-described embodiment 7, the spacer 3 was used.
By using the second spacer 3, air having a relative humidity of less than 100% flowing into the portion covered by the spacer 3 flows into the hole 18, thereby enabling efficient heat exchange to be performed, similar to the seventh embodiment. Has the effect of

[0036]

According to the heat exchanger of the present invention, a notch is formed, the notch is widened and bent, and a heat exchanger body comprising a plurality of fins through which a heat exchange pipe is penetrated; A spacer which is inserted into the bent notch and is in contact with the fin to cover the notch, and a stopper which locks the spacer to a heat exchange pipe or a heat exchanger body and holds the spacer to the heat exchanger body With this configuration, the fin end face is not deformed or damaged by the spacer when the fin is mounted on the cut portion, and the spacer can be securely held.

In the heat exchanger of the second aspect, since the stopper is made of a spring material, even if there is a variation in the dimensions of the spacer, the heat exchanger can be securely pressed down and mounted.

The heat exchanger according to claim 3 is provided with a notch,
The notch is expanded and folded into two, and a heat exchanger body composed of a plurality of fins through which a heat exchange pipe is penetrated, and inserted into the bent and opened notch portion of the heat exchanger body to contact the fin. A spacer that covers the notch portion, a spacer support portion provided on both sides in the longitudinal direction of the spacer, and a retaining portion that holds down the spacer support portion and that is provided on a locking portion provided on both sides of the heat exchange pipe or the heat exchanger body. Since the structure is provided with a stopper that locks and holds the spacer to the heat exchanger main body, there are effects that the spacer can be easily attached to the heat exchanger main body and there is no fear of shifting in the lateral direction. Things.

In the heat exchanger according to the fourth aspect, the spacer is formed by molding a soft resin on the outer side to which a force is applied and a soft resin on a portion supporting the hard resin. This has an effect of improving noise reduction such as suppressing generated noise.

According to the heat exchanger of the fifth aspect, the contact surface between the metals is eliminated, and even if the temperature is changed during the cooling or heating operation of the air conditioner, the generation of the squeaking noise and the rigidity of the entire spacer are prevented. It is possible to mount the same as the conventional metal.

The heat exchanger according to the sixth aspect has the effect of maintaining the shape of the substantially V-shaped soft resin in the shrinkage direction after molding and resisting thermal deformation.

[Brief description of the drawings]

FIG. 1 is a partial side view showing a heat exchanger according to Embodiment 1 of the present invention.

FIG. 2 shows a heat exchanger according to Embodiment 1 of the present invention;
FIG. 2 is a partially enlarged side view of FIG. 1.

FIG. 3 is a partial perspective view showing the heat exchanger according to the first embodiment of the present invention.

FIG. 4 is a partial perspective view showing a heat exchanger according to Embodiment 2 of the present invention.

FIG. 5 is a partial side view showing a heat exchanger according to Embodiment 3 of the present invention.

FIG. 6 is a partial side view showing a heat exchanger according to Embodiment 4 of the present invention.

FIG. 7 is an enlarged side view of a main part of a heat exchanger according to Embodiment 5 of the present invention.

FIG. 8 is an exploded perspective view of a heat exchanger according to Embodiment 5 of the present invention.

FIG. 9 is an enlarged side view of a main part of a heat exchanger according to Embodiment 6 of the present invention.

FIG. 10 is a longitudinal sectional view of an air conditioner body using a heat exchanger according to Embodiment 7 of the present invention.

FIG. 11 is an enlarged view of a bent portion of the heat exchanger according to Embodiment 7 of the present invention.

FIG. 12 is an enlarged view of a spacer of a heat exchanger according to Embodiment 8 of the present invention.

FIG. 13 is a partial perspective view showing a conventional heat exchanger.

FIG. 14 is a partial side view showing a conventional heat exchanger.

FIG. 15 is a partial perspective view showing a conventional heat exchanger and further enlarging FIG. 8;

[Explanation of symbols]

1 heat exchanger body, 1a upper heat exchanger, 1b lower heat exchanger, 2 notch, 3 spacer, 3a spacer support, 3b front piece, 3c rear piece, 3d horizontal piece,
3e hanging piece, 3f positioning, 3g stopper, 3
h Substantially V type soft resin, 3i Substantially I type hard resin, 3j
Approximately T-shaped hard resin, 3k spacer hard plastic part, 3m spacer soft plastic part, 4
Fin, 4a Upper fin, 4b Lock, 4c Notch, 4d Convex, 4e Lower fin, 4f Positioning, 5 Heat exchange pipe, 6 Vent pipe, 7 Stopper, 8 Gap, 9 Sheet metal, 12 Cut surface, 18 Spacer holes, 22 fans, 23 front panel, 24
filter.

Claims (6)

(57) [Claims] 1. A cut is made, the cut is widened and bent, and a heat exchanger body comprising a plurality of fins penetrated by a heat exchange pipe, and inserted into a bent and opened cut portion of the heat exchanger body. And a spacer that is in contact with the fin and covers the cut portion, and a stopper that locks the spacer to a heat exchange pipe or a heat exchanger body and holds the spacer to the heat exchanger body. Heat exchanger. 2. The heat exchanger according to claim 1, wherein the stopper is made of a spring material. 3. A notch is made, the notch is widened and bent into two, and a heat exchanger body comprising a plurality of fins through which a heat exchange pipe is penetrated, and a bent and opened heat exchanger body. A spacer that is inserted into the notch and covers the notch in contact with the fin, a spacer support provided on both sides in the longitudinal direction of the spacer, and a spacer that holds down the spacer support, and a heat exchange pipe or a heat exchanger body. A heat exchanger comprising: a stopper that is locked to locking portions provided on both sides and holds the spacer to the heat exchanger body. 4. A heat exchanger in which a plurality of plate fins through which a heat exchanger pipe is penetrated are provided with cuts, and the cuts are widened to bend the plate fins, and a spacer is attached to the expanded space. A heat exchanger, wherein the spacer is provided with a soft resin outside, and a portion supporting the soft resin is formed of a hard resin. 5. The heat exchange according to claim 4, wherein a portion of the spacer in contact with the plate fillet is integrally extruded with a substantially V-shaped soft resin and a substantially I-shaped hard resin at a central portion of the substantially V-shaped cross section. vessel. 6. The heat exchanger according to claim 4, wherein the hard resin portion of the spacer is substantially T-shaped, and the tip of the substantially T-shaped portion is close to a substantially V-shaped soft resin.