KR100411627B1 - Heat exchanger - Google Patents

Abstract

The present invention integrally forms a heat exchange fin having an air flow path between a plurality of heat exchange tubes, and a plurality of heat dissipation protrusions are formed in the air flow path to increase the heat exchange area, and at the same time improve the heat exchange performance, manufacturing cost and working time The heat exchange device 10 is to reduce the heat, the heat exchange device 10 is a plurality of heat exchange tubes (12, 12 ') through which the refrigerant flowing through the header (18, 18') and the heat exchange tube (12) (12 ') is integrally formed on the outer circumference of the heat exchanger tube (12, 12') is integrally connected to the heat exchange fin (14a) is provided with an air flow passage (14a) through which the surrounding air passes, this air flow passage (14a) It is composed of a plurality of heat dissipation means (16) arranged at regular intervals.

Description

Heat exchanger {HEAT EXCHANGER}

The present invention relates to a heat exchanger, and more particularly, a heat exchange fin having an air passage located between heat exchange tubes connects a plurality of heat exchange tubes integrally, and forms a plurality of heat radiating protrusions in the air passage to improve heat exchange performance. It is related with the improved heat exchanger.

In general, a refrigerator or freezer uses a heat exchanger for condensation and evaporation of a refrigerant. The heat exchanger for condensation serves to cool the refrigerant compressed to high temperature and high pressure in the compressor by heat exchange with the surrounding air. Cooling the ambient air allows for cooling and freezing.

In such a heat exchanger, the structure and shape of the heat exchange fins through which the refrigerant passing through the heat exchange tube passes through the heat exchange with the surrounding air is of great importance in determining the heat exchange efficiency.

As an example, Japanese Patent Laid-Open No. 5-1865 published on January 8, 1993 discloses an aluminum condenser for an air conditioner that can reduce pressure loss of a refrigerant and improve pressure resistance and heat exchange efficiency. This has a structure in which a plurality of flat cross-sectional porous tubes are arranged in parallel and horizontally between a pair of left and right pairs of circular cross-sectional headers, and pins are disposed between adjacent tubes. In the header, an aluminum pipe in which a wax material layer is laminated is used, and both ends of the header are inserted in a state of protruding into the header, and both are bonded and fixed. However, such an aluminum condenser for air conditioners is expensive and has a structure in which bent plate-like cooling fins are formed on both sides of the tube, resulting in an increase in manufacturing cost and manufacturing time.

On the other hand, Japanese Patent Laid-Open No. 10-267506, published on October 9, 1998, discloses a cooling device in which cooling fins on an air intake side are inclined at a predetermined angle, and Shigeru on September 19, 2000. U.S. Patent No. 6,009,767, issued to Denso, Japan, discloses a heat exchanger having a separator plate for separating a low temperature fluid from a high temperature fluid.

The heat exchanger disclosed in these patents also uses plate-shaped cooling fins or wire cooling fins, which requires a lot of manufacturing time and manufacturing cost because additional processes such as welding are required to be combined with the cooling fins and the heat dissipation tube. It has a disadvantage of low heat transfer efficiency per unit area.

In order to solve the above problems, the present invention forms a heat exchange fin integrally with the heat exchange tube without an additional process such as welding, so that a plurality of heat exchange tubes are integrally connected, thereby reducing manufacturing costs and improving heat exchange performance. The purpose is to provide a heat exchanger.

Another object of the present invention is to form an air flow path through which air can pass through a heat exchange fin integrally formed in a heat exchange tube, and the air flow path forms a heat dissipation means for increasing a contact area with surrounding air. It is to provide a heat exchanger that can improve the heat exchange efficiency per area.

1 is a perspective view showing the configuration of a heat exchanger according to a first embodiment of the present invention.

Figure 2 is a perspective view showing the configuration of a heat exchanger according to a second embodiment of the present invention.

3 is a cross-sectional view showing the internal configuration of the heat exchanger shown in FIG.

4 is a cross-sectional view showing a two-row arrangement of the heat exchanger shown in FIG.

5 is a perspective view showing the configuration of a heat exchanger according to a third embodiment of the present invention.

6 is a cross-sectional view showing a three-row arrangement of the heat exchanger shown in FIG.

7 is a perspective view showing the configuration of a heat exchanger according to a fourth embodiment of the present invention.

♣ Explanation of symbols for main parts of drawing ♣

10, 20, 30, 40: heat exchanger 12, 22, 32, 42: heat exchanger tube

14, 24, 34, 44: Heat exchange pins 14a, 24a, 34a, 44a: Air flow path

16, 26, 36, 46: heat radiating protrusions 18, 18 ': header

The heat exchange apparatus of the present invention for achieving the above object is formed integrally with the plurality of heat exchange tubes through which the refrigerant introduced through the header passes, and the heat exchange tube integrally connects the plurality of heat exchange tubes, Each of the heat exchange fins is provided with an air passage through which the ambient air passes, and a plurality of heat dissipation means disposed at intervals in the air passage is characterized in that it comprises.

In the heat exchanger of the present invention for achieving the above object, the heat dissipation means is characterized in that the heat dissipation projection of a rectangular shape disposed in the transverse direction in the air flow path.

In addition, the heat exchange apparatus of the present invention can be easily arranged in a plurality of vertical and horizontal units of a plurality of heat exchange tube and the heat exchange fin connecting the same.

Hereinafter, a heat exchanger according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a configuration of a heat exchanger according to a first embodiment of the present invention, Figure 2 is a perspective view showing a configuration of a heat exchanger according to a second embodiment of the present invention, Figure 3 is shown in Figure 1 4 is a cross-sectional view showing the internal structure of the heat exchanger, and FIG. 4 is a cross-sectional view showing a two-row arrangement of the heat exchanger shown in FIG.

First, as shown in Figure 1, in the first embodiment of the present invention to improve the heat exchange efficiency and manufacturability of the heat exchanger in the heat exchange tube (12, 12 ') and the heat exchange fin (14) The structure formed integrally on both sides of 12 ') is illustrated. That is, the outer circumferential portions of the plurality of heat exchange tubes 12 and 12 'through which the refrigerant passes through the inner spaces 12a and 12a' have heat exchange fins 14 extending in parallel in the horizontal direction on both sides of the heat exchange tube 12 '. It is formed integrally. Therefore, the heat exchange tubes 12 and 12 'are integrally connected by the heat exchange fins 14. In addition, the heat exchange fin 14 has an air passage 14a having a predetermined depth along the longitudinal direction of the heat exchange fin 14, and the air passage 14a has a plurality of heat radiating protrusions 16 having a rectangular shape. ) Is provided.

In this embodiment, the air flow passage 14a serves as a passage through which air flowing along the heat exchange fins 14 passes, and is provided with a plurality of heat dissipation protrusions 16 having a rectangular cross-sectional shape so that the moving air dissipates heat. The heat exchanged with the hot heat conducted from the refrigerant passing through the heat exchange tubes 12 and 12 'while being in contact with the protrusion 16 is cooled. The spacing and height of the heat dissipation protrusion 16 may be appropriately adjusted according to the cooling performance and the purpose of use.

In addition, the mounting positions of the heat exchange tubes 12 and 12 'and the heat exchange fins 14 can be varied according to the purpose of use of the heat exchanger and the required cooling performance. In this embodiment, the air flow passage 14a is provided. The configuration in which the heat exchange fins 14 are integrally formed on both sides of the center of the outer peripheral portion of the heat exchange tubes 12 and 12 'is illustrated. At the time of manufacture, the heat exchange fins 16 are preferably formed integrally by extrusion or the like using the same material as the heat exchange tubes 12 and 12 '.

Next, Figure 2 is a perspective view showing the configuration of a heat exchanger according to a second embodiment of the present invention, the heat exchanger shown in this embodiment is provided in the air passage as compared with the embodiment shown in FIG. The shape of the heat dissipation protrusion is formed differently.

That is, in the heat exchanger 20 according to this embodiment, an air passage 24a is formed in the heat exchange fins 24 formed between the two heat exchange tubes 22 and 22 ', and the air passage 24a is provided. There are formed a plurality of heat radiating projections 26 having a trapezoidal cross section. Thus, the trapezoidal heat radiating protrusion 26 is provided in the air flow path 24a, and since the area which contacts air through trapezoidal hypotenuse increases, compared with the rectangular heat radiating protrusion 16 shown in FIG. The heat dissipation area with air is further increased.

3 and 4 are cross-sectional views showing the internal structure in which the heat exchangers shown in FIGS. 1 and 2 are arranged in one row and two rows, respectively.

3, the headers 18 and 18 'are attached to both ends of the plurality of heat exchange tubes 12 and 12' by welding or the like, and the header 18 has a refrigerant inlet port 19 through which the refrigerant is introduced. A coolant outlet 19 'is provided. Moreover, many partitions 18a-18c are formed in the inside of both headers 18 and 18 '. Therefore, the refrigerant introduced into the header 18 through the refrigerant inlet 19 in the arrow direction P can no longer be moved downward by the partition 18a and the internal space portion of the heat exchange tube 12 of the upper portion ( 12a).

In this process, cooling is performed while the heat exchange with the outside air is made by the heat exchange fins 14 and 24 described with reference to FIGS. 1 and 2. The refrigerant cooled while passing through the upper heat exchange tube 12 flows into the header 18 'on the right side, and then cannot be moved downward by the partition 18b, and the space portion 12a in the next heat exchange tube 12' The second heat exchange with the outside air takes place through the heat exchange fins 14, 24 while passing through '). In this way the refrigerant passes through the headers 18, 18 ′ on both sides and the plurality of heat exchange tubes 12, 12 ′ disposed between the headers 18, 18 ′, and in turn, the heat exchange tubes 12, 12 ′. Is sufficiently cooled through thermal contact with the heat exchange fins 14, 24 integrally formed in the < RTI ID = 0.0 >) < / RTI > and the plurality of heat radiating protrusions 16, 26 provided in the air passages 14a, 24a 'of the heat exchange fins 14, 24. Next, it is discharged along the direction of arrow Q through the refrigerant outlet 19 'and sent to the expansion valve or the compressor.

Next, FIG. 4 illustrates a structure in which the two heat exchangers described with reference to FIG. 3 are vertically arranged side by side. In this embodiment, the refrigerant introduced into the heat exchanger at the upper and lower portions through the two refrigerant inlets 19 and 19 'is cooled while moving in the order as described in FIG. 3 and then to the refrigerant outlets 19 and 19'. It is discharged and flows into the refrigerant pipe 19 ". Therefore, the improvement of the cooling performance about 2 times compared with the one-row structure shown in FIG. 3 can be expected.

In addition, the present invention may be arranged in a horizontal stack of two heat exchangers, which will be described later in detail.

Next, Figure 5 is a perspective view showing the configuration of a heat exchanger according to a third embodiment of the present invention, Figure 6 is a cross-sectional view showing a three-row arrangement of the heat exchanger shown in Figure 5, Figure 7 is a third embodiment of the present invention 4 is a perspective view showing the configuration of a heat exchanger according to the fourth embodiment.

Referring to FIG. 5, in the heat exchanger 30 according to the third embodiment of the present invention, the heat exchange fins 34 formed on the heat exchange tubes 32 and 32 ′ are compared to the heat exchanger devices 10 and 20 described with reference to FIGS. 1 and 2. The structure where the position of) is different was illustrated. That is, the heat exchange fins 34 formed with the air flow passages 34a provided with the plurality of heat radiating protrusions 36 are integrally formed at both sides of the bottom of the outer circumferential portion of the heat exchange tubes 32 and 32 '. Therefore, the heat exchange tubes 32 and 32 'are integrally connected by the heat exchange fins 34. In addition, a header 38 having a communication path 38 'is attached to both ends of the heat exchange tubes 32 and 32' by welding or the like. At this time, the header 38 is formed with a protrusion 39 inserted into and fixed to the internal spaces 32a and 32a 'of the heat exchange tubes 32 and 32'.

FIG. 6 shows a state in which heat exchangers having the structure shown in FIG. 5 are arranged in three rows. The heat exchanger fins 34 and 34-1 of the upper and middle heat exchangers 30 and 30-1 for the three-row arrangement, respectively, have extensions 35 and 35-1 extending in opposite directions. Is formed, and these extensions 35 and 35-1 are joined and fixed by welding or the like during assembly. In addition, the lower heat exchanger (30-2) is fixed to the intermediate heat exchanger (30-1) through the junction portion 37. In the case of employing such a three-row heat exchanger, an improvement in heat exchange performance of about three times can be expected as compared with using only one heat exchanger.

Next, Fig. 7 shows a heat exchanger according to a fourth embodiment of the present invention. In this embodiment, a structure in which the heat exchanger shown in Fig. 5 is arranged in two rows is used. That is, the two heat exchangers 40 are arranged vertically with the insulator 48 interposed therebetween, and the heat exchange fins 44 are bonded to both surfaces of the insulator 48, respectively.

Therefore, a large amount of heat from the refrigerant passing through the inner spaces 42a and 42a 'of the heat exchange tubes 42 and 42' is formed in the heat exchange fin 44 and the air flow path 44a of the heat exchange fin 44. It is cooled through heat exchange with the air passing through the heat radiating projections 46 of. At this time, the insulator 48 is disposed between the both heat exchange fins 44, so that the heat movement between the upper and lower heat exchangers 40 is blocked. In addition, it is also possible to change to the vertical parallel arrangement of the heat exchanger 40 together with the two-row horizontal arrangement of the heat exchanger 40 shown in this embodiment.

In the embodiment according to the present invention described above has been described with respect to a heat exchanger having an air flow path provided with heat-radiating projections of the rectangular and trapezoidal cross-sectional shape, those skilled in the art depart from the technical spirit of the present invention. It will be understood that various modifications, changes, additions, and the like can be made without this. For example, the cross section of the heat dissipation protrusion formed in the air passage may have a polygonal cross-sectional shape such as a circle, a triangle, or a pentagon. The heat dissipation protrusion may be formed to increase the thermal contact area with the surrounding air passing through the air passage. It is also possible to make the structure inclined to one side or alternately to both sides.

According to the present invention described above, since a heat exchange fin having an air flow path is formed between the plurality of heat exchange tubes, the heat exchange tubes are integrally connected, and the air flow path is formed with a plurality of heat radiating protrusions to increase the heat exchange area. It can improve performance. In addition, since the heat exchange fins are integrally formed at the center or the bottom of the outer periphery of the heat exchange tube, manufacturing costs can be reduced and work time can be shortened.

Claims (6)

In the heat exchanger device to install a plurality of heat exchange tubes between a pair of header to circulate the refrigerant, A plurality of heat exchange tubes are integrally connected to each other to form a single body, and a heat exchange fin is formed between the heat exchange tubes provided with an air flow path for passing the surrounding air, and the heat exchange fins have air and air at the interface between the air flow paths. Heat exchanging means is formed to widen the contact surface of the heat exchanger, except for the air flow path is further formed to extend outwardly protruding, the heat exchanger to form one or more groups of heat exchange tubes are mutually coupled. delete delete delete delete The method of claim 1, And the heat exchange fins are disposed to face each other via an insulator so as to be a horizontal and vertical arrangement of the heat exchanger.