JP2001116348A - Indoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems that it is difficult to pull about a construction and pipes because the distance between pipes becomes large as an angle between the crossing axes of two heat exchangers in a front side and a back side is smaller than 90 deg. and frost is generated in an air supply duct, because a wide clearnace between the pipes is not completely dehumidified. SOLUTION: When an angle between the crossing axes of heat exchangers in a front side and a back side is smaller than 90 deg. in a lee side and the number of holes of all pipes of the heat exchangers is even, the uppermost part of the pipe in the lee side of the heat exchanger of the front side is arranged on a substantially extended part of the pipe in the lee side of the heat exchanger of the back side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger used for an indoor unit of an air conditioner for cooling or heating a room.

[0002]

2. Description of the Related Art A conventional air conditioner is disclosed in Japanese Unexamined Patent Publication No.
As described in Japanese Patent Publication No. 85, the shape is as shown in FIG. This will be described below with reference to the drawings.

[0003] In the drawing, an air passage is formed between a suction port 1 and a blow-out port 2, and a suction grille 3, an air filter 4, and the like are formed in the air path in a substantially inverted V-shape. As described above, a plate fin coil type heat exchanger composed of two pieces 5A and 5B and a cross flow fan 6 are arranged below the heat exchanger, and the heat exchanged air is sent to the outlet 2 by the cross flow fan 6. It is supposed to be. Reference numeral 7 denotes a drain pan for receiving dehumidified water falling from each of the heat exchangers 5A and 5B, and also a wall constituting a part of the air passage.

Further, the two heat exchangers 5A and 5B, which have a substantially inverted V shape, are independent heat exchangers, respectively.
It is not a one-piece heat exchanger connected by a thin connection. In addition, each independent heat exchanger 5A, 5B
However, in order to assemble them at the zenith without any gaps, the joint surfaces are fin-cut obliquely and assembled.

[0005]

However, as described above, if the front and rear heat exchangers are obliquely fin-cut at each joint surface and combined without any gap at the zenith, As the angle of intersection of the two heat exchangers becomes acute, the distance between the tubes on the windward side at the zenith increases, and the configuration and the routing of the tubes become difficult.

Further, since the interval between the tubes in the heat exchanger at the zenith becomes large, the air passing through this portion during the cooling operation and going to the cross flow fan is not sufficiently dehumidified, and The problem of dew condensation on the flow fan occurs.

Further, if the total number of holes for the heat exchanger is an odd number, there is a pipe through which the refrigerant does not flow, so that the heat exchanger is not sufficiently exchanged with heat and enters the air duct to generate dew.

The present invention solves such a conventional problem, and makes it easy to route pipes, eliminates the possibility of increasing the distance between the pipes, and avoids the danger of dew. .

[0009]

According to a first aspect of the present invention, there is provided an indoor unit of an air conditioner according to the present invention, wherein the front-side heat exchanger is a plate-fin-coil type heat exchanger having independent front and rear sides. The uppermost part of the tubes on the leeward side of the heat exchanger is arranged on a substantially extension of the arrangement of the tubes on the leeward side of the rear heat exchanger, so that the total number of holes for the heat exchanger is even. It is characterized by.

According to a second aspect of the present invention, there is provided an indoor unit for an air conditioner according to the present invention, wherein a plate fin coil type heat exchanger on a front side and a rear side are independent of each other. The heat exchanger is characterized in that the uppermost portion of the heat exchanger is arranged on a substantially extension of the line of tubes on the leeward side of the heat exchanger on the front side, so that the total number of holes for the heat exchanger is an even number.

According to a third aspect of the present invention, there is provided an indoor unit of an air conditioner according to the present invention, wherein a plate fin coil type heat exchanger on a front side and a rear side are independent of each other. Is arranged so as to fall within a range of ± 5 ° around the center of the lowermost tube with reference to an extension line of the leeward tube arrangement of the rear heat exchanger. .

According to a fourth aspect of the present invention, there is provided an indoor unit for an air conditioner according to the present invention, wherein a plate fin coil type heat exchanger on a front side and a rear side are independent, and a pipe on a leeward side of the rear side heat exchanger. Is arranged so as to fall within a range of ± 5 ° around the center of the lowermost tube with reference to an extension line of the leeward tube arrangement of the front heat exchanger. .

According to a fifth aspect of the present invention, the indoor unit of the air conditioner according to the present invention is configured such that an elastic material is sandwiched between the heat exchangers on the front side and the rear side at the zenith. Features.

According to a sixth aspect of the present invention, the indoor unit of the air conditioner is characterized in that an intersection angle of the heat exchanger on the front side and the rear side is less than 90 ° on the leeward side.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 is a sectional view of an indoor unit of an air conditioner according to a first embodiment of the present invention. Suction port 1
And an air outlet 2 are formed between the suction grill 3 and the air filter and the like, and two pieces 5A and 5B are formed in a substantially inverted V-shape.
And a plate fin coil type heat exchanger composed of
A cross-flow fan 6 is arranged below the heat-exchanger.
To be sent to 7 is each heat exchanger 5
A is a drain pan which receives dehumidifying water falling from A and 5B, and is also a wall which constitutes a part of the air passage.

Further, the two heat exchangers 5A and 5B, which form a substantially inverted V shape, are independent heat exchangers, respectively.
It is not a one-piece heat exchanger connected by a thin connection.

Further, each of the independent heat exchangers 5A, 5B
Are assembled by diagonally cutting the fins and defeating the fins in order to combine them without gaps at the zenith.

When the intersection angle between the front and rear heat exchangers is less than 90 ° on the leeward side and the total number of holes for the heat exchanger is even, the leeward side of the front side heat exchanger is The uppermost part 5A-1 of the tube was arranged on a substantially extension of the tube arrangement on the leeward side of the rear heat exchanger.

For this reason, in the pipe routing, the pitch of the pipes is substantially the same, and the pipes can be connected by a conventional method. Further, since the pipe pitches are substantially the same, heat is sufficiently exchanged, and the risk of dew condensation inside the air conditioner can be avoided. (Embodiment 2) A second embodiment of the present invention will be described with reference to FIG. The same parts as those of the first embodiment are denoted by the same reference numerals.

When the intersection angle between the front and rear heat exchangers is less than 90 ° on the leeward side and the total number of holes for the heat exchanger is even, the leeward side of the rear side heat exchanger The uppermost part 5B-1 of the tube was arranged on a substantially extension of the tube arrangement on the leeward side of the heat exchanger on the front side. This configuration is such that the rear heat exchanger rides on the front heat exchanger. Such a configuration is effective when there is room in the size of the rear side, and the heat exchanger capacity of the rear side can be sufficiently brought out. Further, as in the case of the first embodiment, when the pipes are routed, the pitch of the pipes is substantially the same, and the pipes can be connected by a conventional method. Further, since the pipe pitches are substantially the same, heat is sufficiently exchanged, and the risk of dew condensation inside the air conditioner can be avoided. (Embodiment 3) A third embodiment of the present invention will be described with reference to FIG. The same parts as those of the first embodiment are denoted by the same reference numerals.

The uppermost portion 5A of the tube on the leeward side of the front heat exchanger
-1 is arranged so as to fall within a range of ± 5 ° with respect to the center of the lowermost tube 5B-2 with respect to the extension line of the tube array on the leeward side of the rear heat exchanger. Within this range of ± 5 °, it was experimentally confirmed that heat was sufficiently exchanged and no dew was formed inside the air conditioner. (Embodiment 4) A fourth embodiment of the present invention will be described with reference to FIG. The same parts as those of the first embodiment are denoted by the same reference numerals.

The uppermost part 5B of the tube on the leeward side of the rear side heat exchanger
-1 is arranged so as to fall within a range of ± 5 ° when viewed from the center of the lowermost tube 5A-2 with reference to the extension line of the tube arrangement on the leeward side of the heat exchanger on the front side. Within this range of ± 5 °, it was experimentally confirmed that heat was sufficiently exchanged and no dew was formed inside the air conditioner. (Embodiment 5) A fifth embodiment of the present invention will be described with reference to FIG. The same parts as those of the first embodiment are denoted by the same reference numerals. An elastic material 8 (EPT seal) is sandwiched between the contact portions between the front heat exchanger and the rear heat exchanger. Thereby, the gap between the front-side heat exchanger 5A and the rear-side heat exchanger 5B can be almost completely removed. For this reason,
Since the water passes through the heat exchanger after being sufficiently dehumidified, dew does not occur inside the air passage.

[0023]

As is clear from the above embodiment, the invention according to claim 1 has an even number of holes for the total pipe of the heat exchanger.
The uppermost part of the leeward side tubes of the front side heat exchanger is arranged on a general extension of the leeward side tube arrangement of the rear side heat exchanger.

For this reason, in the pipe routing, the pipe pitch is substantially the same, and the pipes can be connected by a conventional method, so that the productivity is excellent.

Further, since the pipe pitches are substantially the same, heat is sufficiently exchanged, and the risk of dew formation inside the air conditioner can be avoided.

According to the second aspect of the present invention, the total number of holes for the heat exchanger is even, and the uppermost portion of the leeward side pipe of the rear side heat exchanger is located on the leeward side of the front side heat exchanger. It was arranged on the general extension of the tube line. This configuration is such that the rear heat exchanger rides on the front heat exchanger.

Therefore, this is effective when the size on the back side has room, and the heat exchanger capacity on the back side can be sufficiently drawn out.

Further, in the same manner as in the first aspect of the present invention, when the pipes are routed, the pitch of the pipes becomes substantially the same,
Since the pipes can be connected by a conventional method, the productivity is excellent.

Further, since the pitch of the tubes is substantially the same, heat is sufficiently exchanged, and the danger of dew formation inside the air conditioner can be avoided.

According to a third aspect of the present invention, the uppermost part of the leeward side pipe of the front-side heat exchanger is the lowermost part of the pipe on the leeward side of the rear-side heat exchanger. ± 5 from the center
It is arranged to be within the range of °. Within the range of ± 5 °, it was confirmed that heat was sufficiently exchanged and no dew was formed inside the air conditioner.

According to a fourth aspect of the present invention, the uppermost part of the leeward side pipe of the rear side heat exchanger is the lowermost part of the pipe on the leeward side of the front side heat exchanger. ± 5 from center
It is arranged to be within the range of °. Within the range of ± 5 °, it was confirmed that heat was sufficiently exchanged and no dew was formed inside the air conditioner.

According to a fifth aspect of the present invention, an elastic material is sandwiched between the contact portions between the front heat exchanger and the rear heat exchanger.
Thereby, the gap between the front-side heat exchanger and the rear-side heat exchanger can be almost completely removed. For this reason, since it passes through the heat exchanger after being sufficiently dehumidified, dew does not occur inside the ventilation path.

According to the present invention, the crossing angle between the front-side heat exchanger and the rear-side heat exchanger is set to less than 90 °, so that the heat exchanger can be easily stored in the air conditioner, and the tube can be improved. Can be easily arranged. Even if dew occurs,
Since the dew falls through the heat exchanger, dew does not blow out from the outlet.

[Brief description of the drawings]

FIG. 1 is a sectional view of an indoor unit of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an indoor unit of an air conditioner according to a second embodiment of the present invention.

FIG. 3 is a sectional view of an indoor unit of an air conditioner according to a third embodiment of the present invention.

FIG. 4 is a sectional view of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.

FIG. 5 is a sectional view of an indoor unit of an air conditioner according to a fifth embodiment of the present invention.

FIG. 6 is a sectional view of an indoor unit of a conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inlet 2 Outlet 3 Inlet grill 4 Air filter 5 Heat exchanger 6 Cross flow fan 7 Drain pan 8 Elastic material

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shigeru Naruso 1006 Kadoma Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. F term (reference) 3L051 BE04 BE06

Claims (6)

[Claims] In a heat exchanger of a plate fin coil type having independent front and rear sides, a top portion of a leeward side pipe of the front side heat exchanger is leeward of the rear side heat exchanger. An indoor unit of an air conditioner, wherein the indoor unit is arranged on a general extension of the side tube arrangement, and the total number of holes for the tubes of the heat exchanger is an even number. 2. A plate-fin-coil type heat exchanger in which front and rear sides are independent of each other, the uppermost part of a leeward side pipe of the rear side heat exchanger is leeward of the front side heat exchanger. An indoor unit of an air conditioner, wherein the indoor unit is arranged on a general extension of the side tube arrangement, and the total number of holes for the tubes of the heat exchanger is an even number. 3. A heat exchanger of a plate fin coil type having independent front and rear sides, wherein the uppermost part of a leeward side pipe of the front side heat exchanger is leeward of the rear side heat exchanger. An indoor unit for an air conditioner, wherein the indoor unit is arranged so as to fall within a range of ± 5 ° around the center of the lowermost pipe with reference to an extension line of the side pipes. 4. A heat exchanger of a plate fin coil type in which a front side and a rear side are independent, wherein the uppermost part of a leeward side pipe of the rear side heat exchanger is leeward of the front side heat exchanger. An indoor unit for an air conditioner, wherein the indoor unit is arranged so as to fall within a range of ± 5 ° around the center of the lowermost pipe with reference to an extension line of the side pipes. 5. The air according to claim 1, wherein an elastic material is sandwiched between the heat exchangers on the front side and the rear side at the zenith portion. The indoor unit of the harmonizer. 6. The indoor unit for an air conditioner according to claim 1, wherein an intersection angle between the front side heat exchanger and the rear side heat exchanger is less than 90 ° on the leeward side.