JP2001263702A - Air conditioner and manufacturing method of heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner having a convenient fin-and-tube type heat exchanger, in which piping work is easily executed, and a manufacturing method of a fin-and-tube type heat exchanger, in which a quadrangular shape of the heat exchanger can be formed with rollers of the same size of benders. SOLUTION: The air conditioner comprises an indoor heat exchanger 11 and a distributor 62. In the air conditioner a plurality of heat exchange elements 60 are formed by thrusting a plurality of tubes 52 in rows into a number of fins 50 arranged parallel with each other, and the elements 60 are disposed parallel in a belt-like body. Each tube of one element 60 is connected to the distributor 62, and each tube of the other element 60 is connected to a header 54.

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 fin and tube heat exchanger and a method for manufacturing the fin and tube heat exchanger.

[0002]

2. Description of the Related Art Generally, a fin-and-tube type indoor heat exchanger bent in a substantially square shape and a flow divider connected to each tube at one corner of the substantially square shape of the indoor heat exchanger are provided. 2. Description of the Related Art A ceiling-mounted air conditioner is known.

[0003] In this type of heat exchanger, the end of each tube constituting each juxtaposed heat exchanging element of the heat exchanger in which the heat exchanging elements are juxtaposed to form a belt-like body is alternately connected to the flow divider in each row. It is generally connected to a header.

[0004] This type of heat exchanger is formed by changing the size of a bender roller in accordance with each bending angle when the shape is bent into a substantially rectangular shape and the angle is not constant. It is common to do.

[0005]

However, in the conventional structure, the ends of the tubes constituting the heat exchange element are alternately connected to the flow divider and the header, respectively. There is a problem that handling becomes difficult.

On the other hand, when the shape of the heat exchanger is bent into a substantially square shape, there is a problem that it is troublesome to change the size of the bender roller every time the bending angle is different.

An object of the present invention is to provide an air conditioner having a fin-and-tube type heat exchanger which can solve the above-mentioned problems of the prior art and which is easy and convenient to arrange pipes. It is an object of the present invention to provide a method of manufacturing a fin-and-tube heat exchanger that can form quadrangular shapes having different bending angles by rollers of the same size of a bender.

[0008]

According to a first aspect of the present invention, there is provided an air conditioner having an indoor heat exchanger and a flow diverter, wherein the indoor heat exchanger is provided with a plurality of fins in a row. A heat exchanger is formed by piercing a tube to form a heat exchange element, and a plurality of the heat exchange elements are juxtaposed to form a band.All the tubes of one heat exchange element are connected to the flow divider, and the other is provided. The tubes of the heat exchange element are all connected to the header.

The invention according to claim 2 has a fin-and-tube type indoor heat exchanger bent in a substantially rectangular shape and a flow divider connected to each tube at one corner of the indoor heat exchanger. In the air conditioner, the indoor heat exchanger forms a heat exchange element by penetrating a plurality of tubes in a row with respect to a large number of fins, and a plurality of the heat exchange elements are arranged side by side to form a band. A heat exchanger in which the heat exchange element is bent into a substantially square shape by a bender roller.Each tube of one heat exchange element is connected to the flow divider, and all tubes of the other heat exchange element are connected to the header. It is characterized by having been done.

According to the present invention, all the ends of each tube of one of the heat exchange elements of the heat exchanger in which the heat exchange elements are juxtaposed to form a strip are connected to the flow divider, and each of the tubes of the other heat exchange element is connected. Since all the ends are connected to the header, the piping can be easily arranged.

According to a third aspect of the present invention, in the first or second aspect, each tube of the other heat exchange element and the header are connected by a vent, and a central vent among the plurality of vents. Except that the vents at symmetrical positions have the same shape.

In the present invention, since the vents at the symmetrical positions have the same shape, the components of the vents can be shared.

According to a fourth aspect of the present invention, a heat exchange element is formed by penetrating a plurality of tubes in a row with respect to a large number of fins, and a plurality of the heat exchange elements are juxtaposed to form a band. In the method of manufacturing a heat exchanger in which the heat exchange element is bent by using a roller of a bender, when the bent state of the bent portion of the heat exchange element is different, all the bent portions are formed by bending using a roller having the same diameter. It is characterized in that a portion other than the bent portion has a linear shape.

In the present invention, even when the bent portions of the heat exchange element have different bending states, all the bent portions are formed by using the same bender and the same diameter rollers, so that it is necessary to change to a roller of another size. And the heat exchanger bending operation is simple and convenient.

[0015]

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

FIG. 1 shows an air conditioner embedded in a ceiling. The ceiling-embedded air conditioner has an air conditioner main body 1 made of sheet metal, and the air conditioner main body 1 is suspended from a ceiling by hanging bolts 2.

As shown in FIG. 2, the air conditioner body 1 is formed in a substantially rectangular box shape. In FIG. 2, the upper part of the air conditioner main body 1 is open, and when the air conditioner is buried in the ceiling, this opening side faces the conditioned room.

Inside the air conditioner main body 1, a thermal insulator 3 made of styrene foam is provided on a side plate 1A of the air conditioner main body 1.
Are disposed substantially in contact with the inner surface of the. This heat insulator 3
The height H1 of the air conditioner main body 1 is set to a height obtained by subtracting the height H3 of the drain pan 13 described later from the height H2 of the air conditioner main body 1.

A motor 5 is fixed to a top plate 1B of the air conditioner body 1, and an impeller 7 is attached to a shaft of the motor 5. These constitute the blower 9.

A heat exchanger 11 bent into a substantially rectangular shape so as to surround the blower 9 is disposed inside the heat insulator 3 made of styrene foam.

A drain pan 13 made of styrene foam is arranged so as to cover the lower surface 11A of the heat exchanger 11, and the drain pan 13 has its outer periphery 13A substantially in contact with the inner surface of the side plate 1A of the air conditioner main body 1. Are located.

The drain pan 13 has a reinforcing member 15,
Various components such as the nozzle 17 of the blower 9 and the electrical box 19 are screwed.

As shown in FIG. 1, a decorative panel 21 is attached to the lower surface of the air conditioner main body 1, and a suction port 22 and an air outlet 23 are formed in the decorative panel 21. Is equipped with a filter 25.

FIG. 3 shows a state in which the drain pan 13 is removed and the air conditioner body 1 is viewed from below. In the present embodiment, the heat exchanger 11 in the air conditioner main body 1 is bent into a substantially square shape so as to surround the blower 9, and end plates 11B and 11C at both ends thereof are separated by a corner A of a substantially square shape. 30 and this partition plate 30 is
It is bent in a substantially L shape so as to protrude in the direction in which the blower 9 is located. An electric expansion valve 32 connected to the refrigerant pipe 34 is disposed outside the partition plate 30. The refrigerant pipe 34 is connected to the heat exchanger 11 via the electric expansion valve 32, and after passing through the heat exchanger 11, It is connected to a refrigerant pipe 36.

A drain pump 36 is disposed outside the heat exchanger 11 and in the upper right part in the figure.
The drain collected by the drain pump 36 is discharged from the drain discharge pipe 38 by the drain pump 36.

The present embodiment is characterized in that the heat exchanger 11 has a pipe shape. In manufacturing the heat exchanger 11, first, as shown in FIGS. 4A to 4C, a plurality of tubes 5 are arranged in a row with respect to a plurality of strip-shaped fins 50.
2 to form two heat exchange elements 60A and 60B, each of which forms a strip, and arranges the heat exchange elements 60A and 60B side by side (FIG. 4b).

Then, the two heat exchange elements 60A and 60B, which are formed into a band, are integrated into
The heat exchanger 11 is bent by a bender to form a substantially rectangular heat exchanger 11 as shown in FIG.

As shown in FIGS. 4A and 4C, at one end 11A of the heat exchange elements 60A and 60B, the tubes 52 of the heat exchange elements 60A and 60B are connected by bends 52A, respectively.

At the other end 11B, a tube 7 is connected to the tube 52 of the heat exchange element 60A.
1 are connected, and all of these tubes 71
2 is connected. In addition, the ends of each tube 52 penetrating the heat exchange element 60B are all U-vents 56A-56.
It is connected to the header 54 via 56F. Of the plurality of U vents 56A to 56F, the central U vent 5
Except for 6A, U vents 56 are located at symmetrical positions.
The shapes of B to 56E are formed to have the same shape. That is, U vents 56B, U vents 56C, U
The vents 56D and the U vents 56E have the same shape.

In this embodiment, all the ends of the tubes 52 penetrating the heat exchange elements 60 in one row among the heat exchange elements 60 arranged side by side are all connected to the flow divider 62, and the heat exchange elements in the other row are connected. Since all ends of each tube 52 penetrating the element 60 are connected to the header 54 via the U vents 56A to 56E, the inlet piping and the outlet piping are arranged, and the piping can be easily handled.

The U vents 56B to 56E located at symmetrical positions except for the central U vent 56A among the U vents 56A to 56E connected to the header 54.
Are formed so as to have the same shape, so that the parts can be shared, the production of each U vent is easy, and the space around the U vent after installation is tidy, and the installation work is also simple. It is.

Next, a procedure for bending the two heat exchange elements 60A and 60B, which are formed into a band, integrally by a bender will be described.

In this embodiment, in FIGS. 2 and 3,
Although the heat exchanger 11 is shown, the heat exchange elements 60A and 60B which are strips constituting the heat exchanger 11 are
It is folded into a roughly square shape using a bender.

In this air conditioner, as shown in FIG.
Due to the arrangement of the drain pump 36 at the upper right in the figure, the heat exchanger 11 cannot be bent at a constant curvature only at the upper right in the figure. However, in this embodiment, the heat exchanger 11 is bent by using the same roller (not shown) of the same vendor.

That is, the first bent portion A of the heat exchanger 11
As shown by the dotted line in FIG. 3, the second bent portion B is formed by bending using the same roller 100 of the same bender.

The third bent portion C is also formed by bending the same roller 100 halfway using the same roller 100, and then the straight portion E is sandwiched between the third bent portion C and the fourth bent portion D. It is used to bend halfway to reach the final straight portion F.

In this embodiment, even if the bent state of the bent part of the heat exchange element 60 is different, the straight part E
, All the bent portions A to D can be bent using the same bender roller 100 of the same diameter, so that there is no need to change to a roller of another size, and the operation is simple and convenient.

[0038]

According to the present invention, the ends of the tubes of one of the heat exchanger elements of the heat exchanger in which the heat exchange elements are juxtaposed to form a strip are all connected to the flow divider, and the other heat exchange element has the same structure. Since all the ends of each tube are connected to the header, the piping can be easily and conveniently arranged.

Further, since the U-vents at the symmetrical positions have the same shape, the production of each U-vent is easy, the surrounding space of the U-vent after the attachment is neat, and the attachment work is simple.

Further, even when the bent portions of the heat exchange element have different bent states, all the bent portions are formed by using the same bender and the same diameter rollers, so that there is no need to change to another size roller. The effect is that the work is simple and convenient.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a ceiling-mounted air conditioner according to the present invention.

FIG. 2 is an exploded perspective view of the ceiling-mounted air conditioner.

FIG. 3 is a plan view of the air conditioner main body.

4A is a plan view showing an end of the heat exchanger, FIG. 4B is a perspective view, and FIG. 4C is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioner main body 11 Heat exchanger 13 Drain pan 21 Decorative panel 30 Partition plate 50 Fin 52 Tube 54 Header 56A-56E Vent 60 Heat exchange element 62 Divider 100 Roller

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Naoto Sakamoto, Inventor 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Seiichi Koga 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Kazuo Abe 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 3L051 BE05 BE07 BF01 3L103 AA01 AA03 BB42 CC23 DD06 DD33 DD43

Claims (4)

[Claims] 1. An air conditioner having an indoor heat exchanger and a flow divider, wherein the indoor heat exchanger forms a heat exchange element by penetrating a plurality of tubes in a row with respect to a large number of fins. A heat exchanger in which a plurality of heat exchange elements are juxtaposed to form a belt-like body, wherein all tubes of one heat exchange element are connected to the flow divider, and all tubes of the other heat exchange element are all connected to a header. An air conditioner, comprising: 2. An air conditioner having a fin-and-tube type indoor heat exchanger bent in a substantially square shape, and a flow divider connected to each tube at one corner of the substantially square shape of the indoor heat exchanger. In the apparatus, the indoor heat exchanger forms a heat exchange element by penetrating a plurality of tubes in a row with respect to a large number of fins, and a plurality of the heat exchange elements are juxtaposed to form a band, and the heat exchange of the band is performed. A heat exchanger formed by bending an element into a substantially square shape.All tubes of one heat exchange element are connected to the flow divider, and all tubes of the other heat exchange element are connected to a header. An air conditioner characterized by the following. 3. The tubes of the other heat exchange element and the header are connected by a vent, and among the plurality of vents, the shapes of the vents at symmetrical positions except for the central vent are the same. The air conditioner according to claim 1 or 2, wherein: 4. A heat exchange element is formed by penetrating a plurality of tubes in a row with respect to a large number of fins, and a plurality of heat exchange elements are juxtaposed to form a band, and the heat exchange element of the band is a roller of a bender. In the manufacturing method of the heat exchanger bent in the above, if the bent state of the bent part of the heat exchange element is different, all the bent parts are formed by bending using the same diameter roller, and the parts other than this bent part should be linear. A method for producing a heat exchanger.