JP2585558Y2 - Radiant 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 radiant heat exchanger used for, for example, an air conditioner for cooling and heating.

[0002] In this specification, the term "aluminum" shall include aluminum alloys in addition to pure aluminum.

[0003]

2. Description of the Related Art Conventionally, as this type of radiant heat exchanger,
A radiator plate made of extruded aluminum with a pipe mounting part with a circular cross section and a radiator unit consisting of several aluminum water pipes are combined, and the entrance and exit are combined by a header, and an aluminum plate There is already known a so-called pipe-on-sheet joining of meandering aluminum pipes.

[0004]

However, in such conventional radiant heat exchangers, there is a problem that the branching of the refrigerant is not smooth, so that the pressure loss is large and the temperature distribution tends to be uneven. In particular, in the case of cooling, there is a problem that local dew condensation easily occurs. Also, for example, adjustment of the flow rate by inverter control, etc.
Depending on the increase or decrease in the flow rate of the refrigerant, a larger difference occurs in the surface portion of the radiant heat exchanger, resulting in a problem that the temperature distribution becomes non-uniform.

It is an object of the present invention to solve the above-mentioned problems of the prior art, and to make the distribution of the refrigerant uniform, so that the temperature distribution is uniform, there is no local condensation, and the fluctuation of the refrigerant flow rate. It has a uniform flow of refrigerant, has low pressure loss, has excellent heat transfer performance, has very high strength , has a simple structure , and has a small number of parts. Another object of the present invention is to provide a radiant heat exchanger capable of reducing manufacturing costs.

[0006]

According to the present invention, in order to achieve the above object, two metal plates are superimposed on each other and a peripheral bulging portion for refrigerant circulation is provided near a peripheral portion thereof. A large number of metal plate joints are provided in a staggered arrangement on an inner portion surrounded by the refrigerant circulating peripheral bulging portion, and the same inner portion is connected to the peripheral bulging portion and has a triangular intersection as viewed from the front. central bulged portion a refrigerant flow having a net-like pattern having a portion provided with a central bulge for refrigerant flow
A circular auxiliary joint is provided at each triangular intersection of the
A radiant heat exchange is provided at a required portion of the periphery of both metal plates, a refrigerant inlet and a refrigerant outlet each having one end communicating with the peripheral bulging portion for refrigerant circulation and the other end being opened at a side edge of both metal plates. The vessel is the gist.

As the radiant heat exchanger, for example, a press-fitting prevention material is printed in a predetermined shape on one of two aluminum plates, and the other plate is pressed on this surface. A fluid pressure is introduced into the pressure-bonding portion to cause it to swell, and a swelling portion for cooling medium distribution is formed.

Alternatively, a groove having a predetermined shape is formed on one of the two aluminum plates by pressing, and the other plate is joined to this surface and brazed, so that the refrigerant flow swells. What formed the part by what is called a press method may be used.

Since the radiant heat exchanger is used in, for example, an air conditioner for cooling and heating, a refrigerant having a large latent heat of vaporization, such as Freon, flows into the refrigerant flowing through the bulging portion for flowing the refrigerant. Is preferred.

[0010]

The radiant heat exchanger has a peripheral swelling portion for refrigerant circulation and a triangular crossing portion as viewed from the front of an inner portion thereof.
And a central bulging portion for refrigerant distribution having a net-like pattern having a net-like pattern, so that the refrigerant introduced into the radiant heat exchanger is a net-like pattern on the inner side of the peripheral bulging portion. Flows smoothly into the central swelling portion for refrigerant distribution having the following, and therefore, the refrigerant is uniformly diverted, so that the temperature distribution is uniform and no local condensation occurs. In addition, there is little effect on fluctuations in the refrigerant flow rate, and a uniform refrigerant flow can be achieved. In addition, since the flow of the refrigerant is smooth, the pressure loss is small, and since the two metal plates are superimposed on each other and the required parts are joined, the radiant heat exchanger has excellent heat transfer performance. Is what you are doing. In addition, each triangle of the central bulge for refrigerant distribution
A circular auxiliary joint is provided at the intersection of
The strength of the entire heat exchanger has been increased and
Of the central bulge for refrigerant flow
The flow of the refrigerant at each triangular intersection
Divided into two parts, the refrigerant flow is smooth,
The auxiliary joint realizes a higher heat transfer effect,
Exchanger performance is improved.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings.

In the drawings, a radiant heat exchanger (10) according to the present invention is used for, for example, an air conditioner for cooling and heating, and is made by a so-called roll bonding method. That is, in the radiant heat exchanger (10), two aluminum plates (1) and (2), which are rectangular when viewed from the front, are superimposed on each other, and a frame-shaped peripheral joint (3A) is provided on the periphery thereof. Along with the peripheral joint (3A), a substantially rectangular refrigerant circulating peripheral bulge (4A) is provided as viewed from the front, and an inner portion surrounded by the refrigerant circulating peripheral bulge (4A) as viewed from the front. A large number of substantially hexagonal aluminum plate joints (3B) are provided in a staggered arrangement, and a net having a triangular crossing portion connected to the peripheral bulging portion (4A) on the same inner portion and viewed from the front < A central bulging portion (4B) for refrigerant distribution having a br /> pattern is provided.

[0013] or a central bulged portion a refrigerant flow having a net-like pattern at the intersection of each triangle (4B), a circular auxiliary junction (3C) is provided, radiation heat exchanger (10) total Strength is improved.

One end of the radiant heat exchanger (10) communicates with the peripheral bulging portion (4A) and the other end of the radiant heat exchanger (10) communicates with the peripheral bulging portion (4A). A refrigerant inlet (5) and a refrigerant outlet (6) are provided at the edges, respectively.

The radiant heat exchanger (10) prints a crimp-preventing material (not shown) on one of the two aluminum plates (1) and (2) in a predetermined shape. After press-bonding the plates, fluid pressure is introduced into the non-press-bonded portion between the two plates (1) and (2) to cause them to swell, thereby forming the swelling portions (4A) and (4B) for refrigerant flow. It is made by the so-called roll bonding method.

In the above embodiment, an aluminum plate is used as the two metal plates constituting the radiant heat exchanger, but this may be another metal plate.

Further, a large number of aluminum plate joints (3B) provided in a staggered arrangement on the inner portion surrounded by the peripheral bulging portion (4A) for refrigerant circulation have a substantially hexagonal shape when viewed from the front. However, the shape may be other shapes such as a substantially triangle, a square, a pentagon, a circle, an ellipse, a rhombus, and an irregular shape when viewed from the front.

[0018]

According to the radiant heat exchanger of the present invention, as described above, the two metal plates are overlapped with each other, and the peripheral bulging portion for refrigerant circulation is provided near the periphery thereof.
A large number of metal plate joints are provided in a staggered arrangement on the inner part surrounded by the refrigerant circulating peripheral bulging part, and the same inner part is connected to the peripheral bulging part and has a triangular intersection as viewed from the front.
A central bulging portion for refrigerant distribution having a net-like pattern with a difference portion is provided, and each triangular shape of the central bulging portion for refrigerant distribution is provided .
At the intersection, a circular auxiliary joining portion is provided, and at a required position on the periphery of both metal plates, one end communicates with the peripheral bulging portion for refrigerant distribution and the other end opens at the side edge of both metal plates with a refrigerant inlet. The refrigerant outlet is provided respectively, the radiant heat exchanger,
Since it has a peripheral bulging portion for refrigerant circulation and a central bulging portion for refrigerant distribution in a net-like pattern as viewed from the front connected to the inner part of the refrigerant, the refrigerant introduced from the refrigerant inlet into the radiant heat exchanger is , From the peripheral bulging portion to the refrigerant circulating central bulging portion having a net-like pattern, flowing very smoothly,
Therefore, the refrigerant flow is uniform, the temperature distribution is uniform, and there is no local condensation. In addition, there is little influence on fluctuations in the flow rate of the refrigerant, and the refrigerant can be uniformly distributed. Moreover, since the flow of the refrigerant is smooth, the pressure loss is small. In addition, the radiant heat exchanger has excellent heat transfer performance because the two metal plates are superimposed on each other and their required parts are joined. Central bulge for refrigerant distribution
A circular auxiliary joint is provided at each triangular intersection of the
Because that has been, is significantly up the overall strength of the radiation heat exchanger
And the presence of the circular auxiliary joint
Refrigerant at each triangular intersection of the central bulge for distribution
Is quickly split into two parts, and the refrigerant flow is smooth.
As well as higher heat transfer effect due to the auxiliary joint
Is realized, and the heat exchanger performance is increased. Further, the radiant heat exchanger of the present invention has an effect that the structure is simple and the number of parts is small, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially enlarged front view of a radiant heat exchanger according to the present invention.

FIG. 2 is an enlarged sectional view taken along the line II-II in FIG.

FIG. 3 is a schematic perspective view of a radiant heat exchanger according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aluminum plate (metal plate) 2 Aluminum plate (metal plate) 3A Peripheral joining part 3B Aluminum plate joining part 3C Auxiliary joining part 4A Peripheral bulging part for refrigerant circulation 4B Central bulging part for refrigerant circulation having a mesh pattern 5 Refrigerant inlet 6 Refrigerant outlet 10 Radiant heat exchanger

Claims (1)

(57) [Scope of request for utility model registration] 1. A peripheral bulge portion for refrigerant circulation (4A) is provided near a peripheral edge of two metal plates (1) and (2), and the peripheral bulge for refrigerant circulation is provided. A large number of metal plate joints (3B) are provided in a staggered arrangement on the inner part surrounded by the part (4A), and the inner part is connected to the peripheral bulge (4A) and has a triangular shape when viewed from the front . A refrigerant distribution center bulging portion (4B) having a net-like pattern with crossing portions is provided, and each triangular crossing portion of the refrigerant circulation center bulging portion (4B) is provided.
In addition, a circular auxiliary joint (3C) is provided, and both metal plates (1) (2)
At a required portion of the peripheral edge, one end communicates with the peripheral bulging portion (4A) for refrigerant circulation and the other end opens at the side edge of both metal plates (1) and (2). ), Each of which is provided with a radiant heat exchanger.