JP3302984B2 - Easy-to-clean air conditioner 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 for an air conditioner (hereinafter, referred to as an air conditioner), and provides a heat exchanger that is easy to clean.

[0002]

2. Description of the Related Art A conventional heat exchanger for an air conditioner is formed by vertically stacking a number of flat plates on a pipe through which a vaporized refrigerant flows. This heat exchanger had the following problems. If used for a long time, dust is clogged between the plates, and the cooling efficiency is reduced. Therefore, special equipment and special chemicals are required for cleaning. Difficulty in cleaning results in foul odors and shortens the life of the air conditioner itself.

[0003]

The problem to be solved is to provide a heat exchanger for an air conditioner that is easy to clean.

[0004]

Means for Solving the Problems The present invention is capable of attaching / detaching or opening / closing to / from a flat heat sink without vertically stacking a number of flat plates on a pipe through which a vaporized refrigerant flows. The most important feature is to include the airflow control plate. Another feature is the use of a perforated secondary plate to provide a cheaper heat exchanger.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a heat exchanger for an air conditioner, which is easy to clean, using a flat heat sink and a detachable or openable / closable air flow adjusting plate. The first embodiment uses an example in which only a planar heat sink and a detachable or openable / closable airflow control plate are used, and the second embodiment uses a detachable or openable / closable airflow control plate or a secondary plate (hereinafter, a secondary plate). An example will be described. The embodiment is not limited to the following example.

[0006]

Embodiment 1 As an example, an example using only a flat heat sink and a detachable or openable / closable airflow adjusting plate will be described.

FIG. 1 schematically shows a state in which a flat heat radiating plate through which a pipe 4 through which a refrigerant flows passes and an air flow adjusting plate 1 that can be attached or detached or opened are removed. It is. This flat heat sink is made of a known material having excellent heat conductivity. The air flow control plate 1 that can be attached to and detached from the fixed heat sink is attached in the direction of arrow 5.

In the conventional air conditioner, since the heat radiation plates are arranged in a comb-like shape, dust tends to be clogged therebetween, and the clogged dust is difficult to remove. According to the present invention, the heat sink is made flat so that it can be easily cleaned with a rag. However, this alone does not allow the air before air conditioning sent from the fan to sufficiently contact the flat heat radiating plate, thereby deteriorating the heat exchange efficiency. Therefore, a detachable or openable / closable air flow control plate 1 for forcibly applying air before air conditioning sent from a fan to a flat heat sink.
Was used. A detachable or openable / closable airflow adjusting plate 1 for contacting a flat heat sink is attached in the direction of arrow 5. Both are brought into close contact with connection packings 2 and 3 made of a known heat-resistant rubber or the like, and fixed by an appropriate method. The door may be opened and closed using a hinge or the like. At the time of cleaning, water can be washed or wiped after removing or opening the air conditioner 1 from the air conditioner body.

[0009] However, this alone may not provide sufficient heat exchange. In that case, it is necessary to increase the surface area of the heat sink. For this purpose, a projection is provided on the heat sink. The protrusions cause turbulence in the air and agitate the air so that the air is in uniform contact with the heat radiating plate, which also has the effect of increasing the heat exchange rate. If necessary, the airflow adjusting plate 1 can also be provided with a projection.

FIG. 2 shows an example in which a protrusion 6 is provided on the airflow adjusting plate 1. FIG. 3 is a diagram viewed from the side. In the embodiment, the shape of the projection is such that the rugby ball is cut along the long axis. FIG. 4 is a perspective view thereof. FIG. 5 shows an example in which protrusions are arranged on a heat sink. FIG. 6 is a diagram viewed from the side.
Each of them has a shape that can be wiped. FIG.
Is a schematic representation of how these were assembled. The air sent from the fan passes in the directions of arrows 7 and 8 between the flat heat radiating plate and the detachable or openable / closable air flow adjusting plate 1. FIG. 8 shows this as viewed from the direction of arrow 7.

Here, a comparison will be made of the surface area of the heat radiating plate with which a cubic mass of air having a side of 1 cm contacts. Conventional air conditioner heat exchanger is 30cm long and 12cm wide
If the thickness is 0 cm and the thickness is 10 cm, in order to obtain the same surface area, the heat exchanger of the present invention needs to be about 75 cm in length and about 75 cm in length when the thickness is the same. In order to reduce the vertical width, it can be solved by combining two as shown in FIG. FIG. 10 is a diagram viewed from the direction of arrow 7 in FIG.
Since the heat exchange rate is slightly increased by the stirring by the turbulent air flow, the length can be set to 30 to 35 cm in order to obtain the same heat exchange rate when the two sets are combined.

If the outside of the air flow control plate 1 that can be detached or opened and closed with the flat heat sink is covered with a known heat insulating material, the heat exchange rate is further increased.

Next, an example using a secondary plate as a second embodiment will be described. Removable or openable / closable air flow control plate 1
Then, make a groove for attaching the secondary plate. (10 in FIG. 11) The secondary plate has holes 11 in a flat plate as shown in FIG.
Use the one that has been opened. FIG. 13 is a perspective view in which this is attached to a detachable or openable / closable airflow control plate 1. FIG.
13 shows the state of FIG. 13 as viewed from the direction in which air is supplied.

Here, by devising the shape of the hole, a certain degree of agitation due to turbulence of air can be caused, but this is often insufficient. In order to increase the heat exchange rate, the secondary plate of the present invention is characterized in that the secondary plate of FIG. FIG. 15 is a schematic view of the secondary plate. On both sides of the plate, there are flat portions 14 that fit into the grooves 10 of the air flow control plate 1 that can be attached or detached or opened and closed. This portion may have any form as long as it can be attached or detached or opened / closed from the planar heat exchanger or the detachable / openable / closable airflow control plate 1.

In the embodiment, the unevenness is formed in the direction perpendicular to the plane to which the hole 11 originally belongs, or in the direction perpendicular to the plane heat exchanger or the detachable or openable / closable air flow control plate 1. . Specifically, it was pressed into a sine wave shape. However, it is only necessary that the surface be roughened, and the wave shape can be a rectangular wave, a sawtooth waveform, or a spiral wave, and can be formed as a single wave. You can also make irregularities in the shape of animals that please.

The flow of air is in the direction of the black arrow. When viewed from this direction, the holes and the irregularities are arranged so that the perforated holes appear alternately. By doing so, the flowing air is more efficiently stirred. FIG. 16 corresponds to 15 in FIG.
Part is enlarged.

FIG. 17 is a diagram when the secondary plate is used and cut along XY in FIG. Air flows in the direction of the black arrow. As shown in FIG. 17, the secondary plate of the present application is formed on both a planar heat sink and a heat-insulating detachable or openable / closable airflow control plate 1, and more preferably, the secondary plate is made of a material having a known heat conductivity. Adjust the width of the unevenness and the mounting method so that it contacts only the flat heat sink. In this case, the secondary plate not only stirs the air but also functions as a heat sink. Therefore, the heat exchange rate is significantly improved.

The detachable or openable / closable secondary plate can be used not only in air conditioners but also in heat exchangers for various fluids. For example, if it is used for a car radiator, the inside of the radiator can be cleaned,
Since the life of parts is extended, the radiator itself can be recycled.

[0019]

As described above, the following effects can be obtained by the heat exchanger and the secondary plate of the present invention. Since a flat heat sink and a detachable or openable / closable airflow adjusting plate are used, cleaning is easy. Since the detachable or openable / closable airflow control plate is used, the air sent from the fan can be forcibly brought into contact with the flat radiator plate. Since the projections are arranged on the surface of the flat heat radiating plate or the detachable or openable / closable air flow adjusting plate, the heat exchange rate is improved. Since the removable secondary plate is used, cleaning is easy. The secondary plate has holes, which are perpendicular to the plane to which the holes belong, or, in other words, perpendicular to the planar heat exchanger or to the removable or openable / closable airflow regulating plate 1.
The holes are arranged in a staggered manner when viewed from the direction in which the air flows, so that the air can be efficiently stirred. By bringing the secondary plate into contact with the heat sink, the heat exchange rate can be further improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram schematically showing a state in which a detachable or openable / closable airflow adjusting plate is detached from a planar heat sink.

FIG. 2 is an explanatory view schematically showing a detachable or openable / closable airflow control plate having a projection.

FIG. 3 is an explanatory diagram schematically showing a state in which FIG. 2 is viewed from above.

FIG. 4 is an explanatory view schematically showing a projection.

FIG. 5 is an explanatory view schematically showing a planar heat sink having protrusions.

FIG. 6 is an explanatory diagram schematically showing a state in which FIG. 5 is viewed from above.

FIG. 7 is an explanatory view schematically showing a state in which a detachable or openable / closable airflow adjusting plate and a planar heat sink are assembled.

FIG. 8 is an explanatory diagram schematically showing a state in which FIG. 7 is viewed from above.

FIG. 9 is an explanatory diagram schematically showing a state in which two sets of FIG. 7 are combined.

FIG. 10 is an explanatory diagram schematically showing a state of FIG. 10 viewed from above.

FIG. 11 is an explanatory view schematically showing a detachable or openable / closable airflow adjusting plate having a groove for attaching a secondary plate.

FIG. 12 is an explanatory diagram schematically showing a perforated, flat, detachable or openable / closable airflow adjusting plate.

FIG. 13 is an explanatory diagram schematically showing a state in which FIG. 11 is attached to FIG. 12;

FIG. 14 is an explanatory diagram schematically showing a state of FIG. 13 viewed from above.

FIG. 15 is an explanatory view schematically showing a detachable or openable / closable airflow control plate having a perforated surface with unevenness.

FIG. 16 is a partially enlarged view of FIG.

FIG. 17 is an explanatory view schematically showing a cut surface of an embodiment using a secondary plate.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 391 F28F 3/02 F28F 3/08 F28F 3/12 F28F 3/14 F24D 19/00

Claims (4)

(57) [Claims] 1. A heat exchanger for an air conditioner, which includes all of the following. 1. Flat heat sink 2. Airflow control plate that satisfies all of the following. B. Attached to a flat heat sink B. installed so that the air sent from the fan passes between the flat heat radiating plate and the airflow regulating plate. Attached to the heat sink so that it can be removed 2. A heat exchanger for an air conditioner according to claim 1, wherein the heat exchanger satisfies or includes at least one of the following. 1. It includes a flat heat sink having a surface on which an airflow adjusting projection is provided. 2. An airflow adjusting plate according to claim 1, wherein an airflow adjusting projection is provided on the surface. 3. It includes an air flow control plate (secondary plate) that is detachably attached to a flat heat sink or an air flow control plate. 3. A heat exchanger for an air conditioner according to claim 1, further comprising an air flow regulating plate (secondary plate) satisfying all of the following. 1. 1. It is attached so as to be detachable from a flat heat dissipation plate or airflow adjustment plate. The uneven portion of the airflow control plate (secondary plate) is in contact with the planar heat sink. 4. An airflow regulating plate (secondary plate) for a heat exchanger which satisfies all of the following. 1. There is a hole. 2.1. Is unevenly formed in the vertical direction with respect to the plane to which the holes belong, or the heat sink or the airflow regulating plate. 3. For the fluid flowing into the heat exchanger The irregularities are arranged such that the irregularities alternately hit each other. 4. Attached so that it can be detached from the heat sink or airflow control plate