KR20050037655A - Heat exchange device - Google Patents

Abstract

The heat exchange device 3 includes a tubular outer body 5 having an outer wall 55 defining a receiving space 551, and an inner wall 61 disposed in the receiving space 551 and having an inner wall surface 64. A tubular inner body 6 provided, a liquid chamber 7 containing a heat transfer liquid 110, a ventilation space 66 defined in the inner wall 61, and an inner wall surface of the inner body 6 ( A plurality of inner fins 65 protruding from 64 into the vent space 66.

Description

Heat Exchanger {HEAT EXCHANGE DEVICE}

The present invention relates to a heat exchanger, and more particularly to a heat exchanger capable of dissipating heat quickly.

Referring to FIG. 1, the conventional heat exchanger 1 includes a main body 11 having an inner chamber 111, an upper cover (not shown) and a flat lower seat that seal the inner chamber 111, respectively. (Not shown), a filling tube (not shown) located in the center of the top cover and in fluid communication with the inner chamber 111, and a heat transfer fluid (not shown) disposed within the inner chamber 111. do. The plurality of fins 112 extend from the outer periphery of the main body 11 and the extension 114 extending in all directions from the main body 11. In use, the bottom sheet is seated on a heat source such as a central processing unit (CPU) or integrated circuit (IC). Heat from the heat source is transferred toward the body 11 through the bottom sheet.

Because the fluid absorbs heat, the fluid vaporizes to carry heat away from the heat source. Fin 112 functions to dissipate heat from fluid, body 11 and extension 114.

Although the heat exchange device 1 described above can achieve its intended purpose, it is necessary to provide a heat exchange device having a more reliable structure.

Accordingly, it is an object of the present invention to provide a heat exchanger device capable of dissipating heat quickly and having a more reliable structure.

According to the present invention, a heat exchange device includes a tubular outer body having an outer wall defining a receiving space, a tubular inner body disposed in the receiving space and having an inner wall, and defined between the outer wall and the inner wall and containing heat transfer liquid. It includes a liquid chamber, a ventilation space defined in the inner wall of the inner body, and a plurality of inner fins. The inner wall includes an outer wall surface that faces away from the outer wall and faces the outer wall, and an inner wall surface that faces the outer wall surface. The vent space is open at two opposite ends in the axial direction of the inner wall. The inner pin projects from the inner wall surface of the inner body into the ventilation space.

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings.

Before the present invention is described in more detail, it should be noted that like elements are denoted by the same reference numerals throughout the specification.

2 to 5, a first preferred embodiment of the heat exchanger device 3 according to the invention is a tubular outer body 5, a tubular inner body 6, first and second sealing rings 8, 9. ), Fill tube 100, heat transfer fluid 110, and fan unit 120.

The tubular outer body 5 is suitable for mounting on the heat source 4 (see FIG. 5) and is made of a good thermally conductive material such as aluminum, copper or metal alloy. The outer body 5 has an outer wall 55 defining a receiving space 551. The outer wall 55 includes a flat contact surface 51 suitable for being mounted on the heat source 4, a serrated surface 53 (see FIG. 4) formed to face the contact surface 51, and an outer wall 55. It has a plurality of outer pins 57 protruding outward.

The tubular inner body 6 is disposed in the receiving space 55 and is made of a good thermally conductive material such as aluminum, copper or metal alloy. The inner body 6 has an inner wall 61 spaced apart from the outer wall 55. The inner wall 61 includes an outer wall surface 63 facing the outer wall 55 of the outer body 5, an inner wall surface 64 facing the outer wall surface 63, and a ventilation space defined in the inner wall 61. 66 and a plurality of inner fins 65 protruding from the inner wall face 64 into the ventilation space 66. The outer wall surface 63 and the inner wall surface 64 are each formed with a plurality of capillary grooves 631 extending in the axial direction of the inner body 6. In this embodiment, each capillary groove 631 of the outer wall surface 63 has a triangular cross section. The vent space 66 is open at two axially opposed ends of the inner wall 61. The inner fin 65 protrudes radially from the inner wall face 64 and has an innermost end 652 which collectively defines an axial hole in the vent space 66. Each inner fin 65 is formed with a number of capillary grooves 651 in its surface extending in the axial direction of the inner body 6 to enhance the heat transfer effect. The contact surface 51 of the outer wall 55 extends along the axial direction of the ventilation space 66.

Two spacer elements 56, 56 ′ are arranged between the outer wall 55 of the outer body 5 and the inner wall 61 of the inner body 6. In this embodiment, each spacer element 56, 56 ′ projects from the outer wall 55 to the inner wall 61. The spacer element 56 is tapered and serrated and formed integrally with the serrated surface 53 of the outer wall 55. The spacer element 56 ′ is semicircular in cross section as best shown in FIG. 4 and is disposed opposite to the tapered spacer element 56. The inner wall 61 is further formed with two recesses 62, 62 ′ for respectively engaging the spacer elements 56, 56 ′ such that the inner body 6 is positioned relative to the outer body 5. One recess 62 is formed with a toothed portion to engage the toothed portion of the tapered spacer element 56. As such, the liquid chamber 7 (see FIG. 4) is defined between the outer wall 55 of the outer body 5 and the inner wall 61 of the inner body 6. The liquid chamber 7 is formed with a liquid accumulating portion 73 proximate to the contact surface 51 of the outer wall 55 of the outer body 5.

The first and second sealing rings 8, 9 seal respectively two axially opposed ends of the liquid chamber 7. Each of the first and second sealing rings 8, 9 has a "T" shaped cross section.

The filling tube 100 is connected to the first sealing ring 8 and has a first end section 101 extending into the liquid chamber 7 and a second end section projecting out of the first sealing ring 8. 102 is provided.

The heat transfer fluid 110 is a conventional fluid that vaporizes on heating and condenses on cooling. The fluid 110 is introduced into the liquid chamber 7 through the filling tube 100 and accumulated in the liquid accumulating portion 73 of the liquid chamber 7, after which a filling hole in the filling tube 100 (not shown) Is sealed by spot welding.

The fan unit 120 is fixedly connected to one end of the outer body 5 by a plurality of screws 150, and is coupled to the ventilation space 66. Retention holes 121 are formed in the frame 122 of the fan unit 120 for engaging with and limiting the second end section 102 of the fill tube 100.

The heat exchange device 3 further includes a semicircular guide block 130 that engages with the innermost end 652 of the inner fin 65 and covers the axial aperture in the vent space 66. The guide block 130 directs the air flow from the fan unit 120 to blow toward the inner fin 65, thereby transporting heat away from the inner fin 65.

When the heat source 4 generates heat, the heat transfer fluid 110 in the fluid accumulator 73 rapidly changes from a phase, i.e., liquid to high pressure steam, as shown by the up arrow in FIG. . Next, by the capillary action of the capillary groove 631 in the outer wall surface 63 of the inner wall 61 of the inner body 6, the vaporized fluid is shown by the arrow pointing to the capillary groove 631 in FIG. Likewise it flows into the capillary groove 631, exchanges heat with the surrounding space by convection, and then flows downward to the liquid accumulator 73 due to gravity as shown by the down arrow in FIG. 5.

In addition, the presence of the capillary groove 631 in the outer wall surface 63 of the inner body 6 not only promotes cooling of the vaporized fluid, but also improves the heat transfer effect. Furthermore, due to the outer fins 57 which are capable of heat exchange with the ambient air to dissipate heat outwards, the air is also directed towards the inner fins 65 to dissipate heat in the inner body 6 of the heat exchange device 3. Due to the fan unit 120 for blowing air, heat from the heat source 4 is quickly dissipated from the heat exchanger device 3 of the present invention, whereby a good heat exchange effect can be achieved.

6, the second preferred embodiment of the heat exchanger device according to the invention is shown to be substantially similar to the first preferred embodiment. However, in this embodiment, the outer wall surface 63 'of the inner body 6' is serrated, and the outer wall surface 63 'has a plurality of capillary grooves 631' as shown in FIG. Formed.

Referring to Fig. 7, a third preferred embodiment of the heat exchanger device according to the present invention is shown to be substantially similar to the first preferred embodiment. Unlike the first preferred embodiment, each capillary groove 631 "in the outer wall surface 63" of the inner body 6 "has a trapezoidal cross section.

Referring to Fig. 8, the fourth preferred embodiment of the heat exchanger device according to the present invention is shown to be substantially similar to the first preferred embodiment. However, in this embodiment, the capillary groove 631a in the outer wall surface 63a of the inner body 6a extends in the spiral direction of the outer wall surface 63a.

9, the fifth preferred embodiment of the heat exchanger device according to the present invention is shown to be substantially similar to the first preferred embodiment. However, in this embodiment, the capillary groove 631b in the outer wall surface 63b of the inner body 6b extends in the circumferential direction of the outer wall surface 63b.

10, the sixth preferred embodiment of the heat exchanger device 3 according to the invention is shown to be substantially similar to the first preferred embodiment. However, in this embodiment, the first sealing ring 8 has a hole 81 and a cover member 140 for sealing the hole 81. The cover member 140 includes an inner side face 142 facing the liquid chamber 7, an outer side face 141 facing the inner side face 142, and a filling hole 143 formed in the cover member 140. The filling hole 143 is in fluid communication with the liquid chamber 7 and extends through the outer side 141. The filling hole 143 is formed as a blind hole 144 having an open end 145 at the outer side 141 and a closed end 145 adjacent the inner side 142. The cover member 140 further includes a seat portion 146 at the inner side 142 to limit the blocked end 145. The seat portion 146 has a first needle hole 147 extending through the inner side 142 and communicating with the blind hole 44.

In this embodiment, the heat exchange device 3 is not provided with a filling tube 100, but the heat exchange device 3 has an elastic sealing member 150 fitted in the filling hole 143 and an outer surface 161 thereof. It further includes a fixing member 160 fitted in the blind hole 144 so as to be flush with the outer side 141 of the cover member 140 and disposed outward of the sealing member 150. The fixing member 160 has a shape coincident with the shape of the blind hole 144, and seals in the second needle hole 162 and the second needle hole 162 to align with the first needle hole 147. It includes an insertion member 180 disposed.

In order to fill the heat exchange device 3 with the heat transfer fluid 110, the needle 170 passes through the second needle hole 162, the sealing member 150, and the first needle hole 147 to form the liquid chamber 7. E) and subsequently exhaust air from within the liquid chamber 7 and introduce a predetermined amount of heat transfer fluid 110 into the liquid chamber 7. When the needle 170 is withdrawn from the sealing member 150, the sealing member 150 contracts to seal the passage of the needle 170 in the sealing member 150 because of its elasticity. Thereafter, the fixing member 160 is sealedly fitted into the blind hole 144 to seal the first needle hole 147 and prevent air from entering the liquid chamber 7 in the heat exchange device 3. At this time, the second needle hole 162 is sealed by the insertion member 180 to improve the hermetic sealing. Insertion member 180 may be a welding spot formed by a spot welder (not shown).

Referring to FIG. 11, the seventh preferred embodiment of the heat exchanger device 3 according to the invention is shown to be substantially similar to the first preferred embodiment. However, in this embodiment, the heat exchanger device 3 has two ends connected respectively to the water inlet pipe 190 and the water outlet pipe 200. Heat generated by the heat source 4 is quickly transferred to the water (not shown) entering the inner body 6 (see FIG. 2) through the inlet pipe 190, whereby warm water is discharged to the outlet pipe 200. Is discharged from the heat exchange device (3). Such a structure can be used in a water heater.

Although the present invention has been described in connection with what is considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments and is intended to cover various devices and equivalent devices falling within the spirit and scope of the broadest understanding. Will be.

According to the present invention, it is possible to provide a heat exchanger device capable of dissipating heat quickly and having a more reliable structure.

1 is a perspective view showing a main body of a conventional heat exchanger;

2 is an exploded perspective view showing a first preferred embodiment of the heat exchanger according to the present invention;

3 is a perspective view showing a first preferred embodiment of the assembled state;

4 is a partial cross-sectional view of the first preferred embodiment taken along line 4-4 of FIG. 3;

FIG. 5 shows how the heat transfer fluid changes phase after being stimulated by a heat source, FIG.

6 is a perspective view showing an inner body of a second preferred embodiment of a heat exchanger according to the invention,

7 is a perspective view showing the inner body of the third preferred embodiment of the heat exchanger according to the invention,

8 is a perspective view showing an inner body of a fourth preferred embodiment of a heat exchanger according to the present invention;

9 is a perspective view showing an inner body of a fifth preferred embodiment of a heat exchanger according to the present invention;

10 is a partial sectional view showing a first sealing ring of a sixth preferred embodiment of a heat exchanger device according to the present invention comprising a sealing member;

11 is a schematic view showing an inner body of a seventh preferred embodiment of a heat exchanger device according to the invention.

Explanation of symbols for the main parts of the drawings

3: heat exchanger 4: heat source

5: tubular outer body 6: tubular inner body

7: liquid chamber 8, 9: sealing ring

51: contact surface 55: outer wall

56, 56 ': spacer element 57: outer pin

61: inner wall 62, 62 ': recess

63: outer wall 64: inner wall

65: inner fin 66: ventilation space

100: filling tube 110: heat transfer fluid

120: fan unit 130: guide block

140: cover member 631, 641, 651: capillary groove

652: innermost end

Claims (15)

In the heat exchange device (3), A tubular outer body 5 having an outer wall 55 defining a receiving space 551, A tubular inner body 6 disposed in the accommodation space 551 and having an inner wall 61, wherein the inner wall 61 is spaced apart from the outer wall 55 and faces an outer wall 55 ( The tubular inner body 6, including an inner wall surface 64 facing the outer wall surface 63; A liquid chamber 7 defined between the outer wall 55 and the inner wall 61 and containing a heat transfer liquid 110; A ventilation space 66 defined in the inner wall 61 of the inner body 6 and open at two end portions opposed in the axial direction of the inner wall 61; A plurality of inner fins 65 protruding from the inner wall face 64 of the inner body 6 into the vent space 66. Heat exchanger device. The method of claim 1, Further comprising spacer elements 56, 56 ′ disposed between the outer wall 55 and the inner wall 61. Heat exchanger device. The method of claim 2, The spacer elements 56, 56 ′ protrude from the outer wall 55 to the inner wall 61, and the inner wall 61 recesses 62, 62 ′ to engage the spacer elements 56, 56 ′. With Heat exchanger device. The method of claim 1, It further comprises a plurality of outer pins 57 protruding outward from the outer wall 55 of the outer body 5 Heat exchanger device. The method of claim 1, The fan unit 120 further includes a fan unit disposed at one of both axial ends of the inner wall 61 and coupled to the ventilation space 66. Heat exchanger device. The method of claim 5, wherein The inner fin 65 protrudes radially from the inner wall surface 64 of the inner wall 61, and has an innermost end 652 that collectively defines an axial hole in the vent space 66, The heat exchange device 3 further comprises a guide block 130 covering the axial hole and engaging with the innermost end 652. Heat exchanger device. The method of claim 6, The outer wall 55 has a contact surface 51 suitable for mounting on the heat source 4 and extending along the axial direction of the vent space 66. Heat exchanger device. The method of claim 1, Further comprising first and second sealing rings 8, 9 to seal the two axially opposite ends of the liquid chamber 7, respectively. Heat exchanger device. The method of claim 8, And a filling tube 100 connected to the first sealing ring 8 and extending into the liquid chamber 7, wherein heat transfer liquid 110 passes through the filling tube 100 to the liquid chamber 7. Introduced into Heat exchanger device. The method of claim 1, It further comprises a plurality of capillary grooves (631, 631 ', 631 ", 631a, 631b formed in the outer wall surface 63 of the inner wall 61). Heat exchanger device. The method of claim 10, The capillary grooves 631, 631 ′, 631 ″ extend in the axial direction of the inner body 6. Heat exchanger device. The method of claim 10, The capillary groove 631a extends in the helical direction of the inner body 6. Heat exchanger device. The method of claim 10, The capillary groove 631b extends in the circumferential direction of the inner body 6. Heat exchanger device. The method of claim 1, It further comprises a plurality of capillary grooves 641, 651 formed in the inner wall surface 64 of the inner wall 61 and in the surface of each of the inner fins 65. Heat exchanger device. The method of claim 14, The capillary grooves 641, 651 extend in the axial direction of the inner body 6. Heat exchanger device.