TWI409423B - Heat exchange device - Google Patents

Abstract

The present invention relates to a heat exchange device, comprising a first chamber, a second chamber, and at least one pipe piece. The first chamber has a first space and at least one first through-hole. The second chamber has a second space and at least a second through-hole. The at least one pipe piece connects between a corresponding first through-hole and a second through-hole. the at least one pipe piece functions to conduct a heat exchange media to pass therethrough. In a radial cross-section of the at least one pipe piece, at least one of inner wall and outer wall exhibits a wavy shape. In this way, heat exchange efficiency can be increased, and the weight, volume and production costs of the heat exchange device can be reduced.

Description

Heat exchange device

The present invention relates to an energy exchange device, and more particularly to a heat exchange device.

In Japanese Patent Publication No. 2001-74388 (Denso Application), it is disclosed that an adjustment plate is applied, and by designing an opening area ratio of the adjustment plate, the air temperature distribution at the outlet is relatively uniform. The advantage of this patent is that the air temperature through the evaporator is relatively uniform, which makes the human body feel more comfortable. However, it has the disadvantage that the adjustment plate is added to greatly increase the flow resistance of the refrigerant.

The refrigerant of the evaporator absorbs heat from the air and turns from the liquid phase to the gas phase. In U.S. Patent No. 7,367,388, B2 (Application of Calsonic Kansei Co., Ltd.), it discloses an evaporator design of a carbon dioxide refrigerant. After the refrigerant enters the round tubes from the inlet, the refrigerant enters the refrigerant tube through the barrier of the partition plate, and passes through the fins. The surface is heat exchanged with the air. A lubricating oil circulation hole is opened in some partition plates to prevent the lubricating oil residue from adhering to the refrigerant pipe.

By the barrier of the partition plate, the evaporator is divided into six sections, and the number of refrigerant tubes is along the flow direction, and there are 3, 3, 4, 5, 5, and 5 branches respectively to avoid After the refrigerant evaporates into the gas phase, the flow rate increases, and the liquid phase refrigerant is dried out. The advantage of this U.S. patent is to prevent the residual oil from sticking to the refrigerant pipe, thereby avoiding the heat transfer efficiency caused by the decrease; bringing the lubricating oil into the compressor to help the heat dissipation and lubrication of the compressor. However, this U.S. patent has the following disadvantages: after the refrigerant flows to the round pipes on both sides, the flow resistance is large due to the barrier of the partition plate and the turning into the refrigerant pipe.

U.S. Patent No. 6,827,139, B2 (Denso Application) discloses a heat exchanger which can be applied to an evaporator of an automobile air conditioner, wherein the refrigerant enters the two sides of the circular tube from the inlet, and is deflected into the refrigerant tube by the guide of the intermediate plate and the flow hole. Heat exchange with air through the surface of the fins. With a suitable intermediate plate and flow hole design, the flow flows in the comb shape upstream and downstream along the flow direction of the refrigerant. The advantage of this U.S. patent is that it flows in a comb shape upstream and downstream along the flow direction of the refrigerant to enhance the heat transfer effect. However, the shortcoming of this U.S. patent is that due to the complicated design, there are many welding points, thus increasing the cost.

Therefore, it is necessary to provide an innovative and progressive heat exchange device to solve the above problems.

The invention provides a heat exchange device comprising: a first cavity, a second cavity and at least one pipe. The first cavity has a first space and at least one first through hole. The second cavity has a second space and at least one second through hole. The at least one pipe member communicates with the corresponding first through hole and the second through hole, the at least one pipe member is configured to pass a heat exchange medium, wherein one of the at least one pipe member has a radial cross section, and the inner pipe wall and the outer pipe wall At least one of them is wavy.

The present invention has the following advantages.

1. The heat exchange device of the present invention can be applied to an evaporator or/and a cooler, which not only increases heat exchange efficiency, but also reduces the weight, volume, and manufacturing cost of the heat exchange device.

2. The pipe fittings of the heat exchange device of the present invention can be directly formed by extrusion, and an excellent heat dissipation effect can be achieved without adding fins.

3. The heat exchange device of the present invention can reduce the flow resistance of the heat exchange medium through the design of the spiral pipe member, and the internal eddy current formed in the pipe member can increase the heat transfer effect.

4. The heat exchange device of the present invention can be used as an evaporator or a cooler, which can be applied to an air conditioning system, through the design of introducing the condensed water of the evaporator into the cooler, utilizing the water in the cooler to enhance the overall heat exchange device performance.

1 is a combination view showing a first embodiment of the heat exchange device of the present invention; FIG. 2 is an exploded view showing a first embodiment of the heat exchange device of the present invention; and FIG. 3 is a view showing a first embodiment of the heat exchange device of the present invention. Schematic diagram of the first cavity and the second cavity. Referring to FIGS. 1, 2 and 3, in the present embodiment, the heat exchange device 100 includes a first cavity 1, a second cavity 2, at least one tube member 3, a housing 4, and a base 5. The first cavity 1 has a first space 11 and at least one first through hole 12 . The second cavity 2 has a second space 21 and at least one second through hole 22 . In this embodiment, the second space 21 is larger than the first space 11 .

In this embodiment, the first cavity 1 includes a first base portion 13 and a first cover portion 14. The first base portion 13 and the first cover portion 14 are fixedly coupled by a coupling member 6 such as a screw. The first space 11 is formed inside, and the at least one first through hole 12 is formed in the first base portion 13. The second cavity 2 includes a second base portion 23 and a second cover portion 24. The second base portion 23 and the second cover portion 24 are fixedly coupled by a coupling member 6 such as a screw to form the second space. 21 . The at least one second through hole 22 is formed in the second base portion 23 and faces the at least one first through hole 12 . Preferably, a sealing member 7 (for example, an O-ring) is provided between the first base portion 13 and the first cover portion 14 and between the second base portion 23 and the second cover portion 24 to increase the sealing property. And prevent leakage.

The at least one pipe member 3 communicates with the corresponding first through hole 12 and the second through hole 22, and the at least one pipe member 3 passes a heat exchange medium 8 (for example, lubricating oil of a refrigerant and a compressor). The at least one tube member 3 can be a spiral tube or a straight tube. In a radial section of the at least one tubular member 3, the inner tube wall 31 of the at least one tubular member 3 is wavy (as shown in FIG. 4a); or, in one of the radial sections of the at least one tubular member 3, the The outer tube wall 32 of at least one tube member 3 is wavy (as shown in FIG. 4b); or, in one of the radial portions of the at least one tube member 3, the inner tube wall 31 and the outer tube wall 32 of the at least one tube member 3 It is wavy (as shown in Figure 4c).

In the present embodiment, the heat exchange device 100 includes a plurality of spiral tubes 3, and in one of the radial sections of each of the tubes 3, the inner tube wall and the outer tube wall of each tube member 3 are wavy. The first cavity 1 has a plurality of first through holes 12 , and the second cavity 2 has a plurality of second through holes 22 facing the second through holes 22 .

The heat exchange medium 8 produces radial agitation within the tubes 3 by the appropriate diameter and radius of the spiral tube 3, the viscosity of the heat exchange medium 8, and the flow rate design. Thus, the flow resistance of the heat exchange medium 8 is low, which increases the temperature uniformity of the heat exchange medium 8 itself and indirectly increases the overall heat transfer efficiency. The design of the spiral tube 3 also greatly shortens the overall length of the heat exchange device 100, and the heat exchange surface area per unit volume is also greatly increased. The inner sides of the radial sections of the tubes 3 are wavy, which can increase the contact area of the heat exchange medium 8 and the tubes 3; the outer sides of the tubes 3 have a wavy outer side, which can increase the external heat exchange fluid 8 (for example) Air) and the contact area of the tubes 3.

In the present embodiment, the two ends of the tubes 3 are respectively connected to the first through holes 12 and the second through holes 22 facing each other (that is, the tubes 3 are disposed in the first cavity 1) The tube 3 causes the heat exchange medium 8 to flow from the first cavity 1 to the second cavity 2 between the opposite sides of the second cavity 2 . The tubular members 3 are disposed between the facing sides of the first cavity 1 and the second cavity 2, and the two ends of each of the tubular members 3 are preferably disposed at a peripheral position of the spiral range thereof (in the present embodiment) In the example, the two ends of the tubular members 3 are integrally disposed as close as possible to the center of the first cavity 1 and the second cavity 2, as shown in FIG. 2), so that the two ends of the tubular members 3 can be The distance is the shortest and the integrated structure diameter can be minimized to reduce the overall volume and weight of the heat exchange device 100.

Preferably, each of the two ends of each of the tubular members 3 has a movable screwing member (not shown), and the tubular members 3 are respectively screwed to the corresponding first through holes 12 and the first through the movable screwing members. Two through holes 22. Thereby, the disassembly and assembly of the tubes 3 can be facilitated, and the concentration of the tubes 3 in a fixed space can be increased.

In this embodiment, the housing 4 connects the first cavity 1 and the second cavity 2 and encloses the tubes 3 . It can be understood that the housing 4 can be connected to the first cavity 1 and the second cavity 2 by soldering, and the first cavity 1 and the second cavity 2 can also be connected by screwing, but Not limited to the above.

The housing 4 has a first passage 51, a second passage 52 and a third passage 53. The first channel 51 and the second channel 52 are respectively disposed adjacent to the first cavity 1 and the second cavity 2 , and the third channel 53 is disposed adjacent to the second cavity 2 . Preferably, the first passage 51 and the second passage 52 are radially tangential to the housing 4. In this embodiment, the housing 4 and the second cavity 2 are separate units. It can be understood that the housing 4 and the second cavity 2 can be integrated.

Preferably, the second passage 52 causes a heat exchange fluid 9 to enter the housing 4 in a tangential direction, and the heat exchange fluid 9 is led out through the first passage 51 (in the present embodiment, the heat exchange fluid The housing is 4) in a tangential direction of the 9 series. The net flow direction of the heat exchange medium 8 is opposite to the net flow direction of the heat exchange fluid 9, as exemplified in Fig. 1, the net flow direction of the heat exchange medium 8 is from top right to bottom left, and the net flow of the heat exchange fluid 9 The direction is from bottom left to top right. The heat exchange medium 8 is moved in and out, and there is no dead angle of the flow, so that the lubricating oil flowing in the heat exchange medium 8 (to lubricate the compressor) is less likely to remain in the heat exchange device 100, and the heat exchange device is added. The heat transfer effect of 100 and the lubrication effect of the compressor.

In the present embodiment, the heat exchange device 100 is applied as an evaporator, and the casing 4 of the heat exchange device 100 has a hollow cylindrical shape, and the heat exchange fluid 9 flows into the casing 4 from the lower edge tangential direction, resulting in The swirling flow and heat exchange with the heat exchange medium 8. Since the net flow direction of the heat exchange medium 8 is opposite to the net flow direction of the heat exchange fluid 9, the overall temperature difference (temperature gradient) is large, and thus high heat exchange efficiency is generated.

In this embodiment, the heat exchange fluid 9 is air, the third passage 53 of the lower edge of the casing 4 is radially tangential to the casing 4, and the third passage 53 can condense the air after cooling. The water 10 is led to the heat exchange device 100. It can be understood that the third passage 53 can also be disposed to be in axial communication with the housing 4 (as shown in FIG. 5).

The third passage 53 which is also at the same end of the casing 4 as the second passage 52 (air inlet) has the advantage that the condensed water 10 on the outer surface of the tubular members 3 can be collected by its own gravity. The third passage 53 (condensed water outlet) has the same horizontal plane, and the condensed water 10 can obtain the driving force of the inlet air to derive the heat exchange device 100. Preferably, the diameter of the third passage 53 is substantially smaller than the diameter of the second passage 52 and the first passage 51, that is, the diameter of the outlet of the condensed water 10 is substantially smaller than the diameter of the air inlet and the air outlet to avoid air. The third passage 53 is taken in and out by the outlet of the condensed water 10.

In the present embodiment, the inner side of the radial section of the tubular members 3 has a wave shape, which can reduce the degree of high-speed flow of the gas-phase refrigerant entraining the low-speed liquid refrigerant. Preferably, the second space 22 of the second cavity 2 is larger than the first space 12 of the first cavity 1 , which can reduce the pressure rise caused by the volume expansion of the liquid phase refrigerant after gasification to reduce the refrigerant. Flow resistance.

The susceptor 5 is disposed at one end of the heat exchange device 100. Preferably, the pedestal 5 is disposed at the outlet end of the heat exchange medium 8 of the heat exchange device 100. In this embodiment, the housing 4, the base 5, the first cavity 1 and the second cavity 2 are individually independent units (which can be coupled through a coupling element), it being understood that the housing The body 4 and the base 5 and the first cavity 1 or the second cavity 2 may be integrally formed. The heat exchange device 100 can be conveniently or stably installed through the base 5.

Figure 6 shows a combination of a second embodiment of the heat exchange device of the present invention. The same portions as those of the heat exchange device 100 shown in Figs. 1 and 2 are denoted by the same reference numerals and will not be described again. Referring to Figures 1, 2 and 6, the heat exchange device 200 is applied as a cooler.

In the embodiment in which the heat exchange device 200 is applied as a cooler, the tubes 3 of the heat exchange device 200 are such that the heat exchange medium 8 is circulated from the second chamber 2 (the cavity in the upper right of FIG. 6) to The first cavity 1 (the cavity at the lower left of FIG. 6). The first passage 51 causes the heat exchange fluid 9 to enter the housing 4 in a tangential direction, and the heat exchange fluid 9 is led out of the housing 4 via the second passage 52. In this embodiment, the volume of the heat exchange medium 8 is reduced after the heat is released. Preferably, the first space 11 of the first cavity 1 is smaller than the second space 21 of the second cavity 2, so that The flow resistance of the heat exchange medium 8 is reduced.

Taking air as the heat exchange fluid 9 as an example, air flows into the casing 4 in a tangential direction from the first passage 51 (air inlet of the cooler) of the lower edge of the heat exchange device 200, and generates a swirling flow and heat exchange. After the medium 8 is subjected to heat exchange, the second passage 52 (the air outlet of the cooler) of the upper edge of the heat exchange device 200 flows out in a tangential direction. The net flow direction of the heat exchange medium 8 is opposite to the net flow direction of the heat exchange fluid 9, and in Fig. 6, the net flow direction of the heat exchange medium 8 is from top right to bottom left, and the net flow direction of the heat exchange fluid 9 From bottom left to top right. The net flow direction of the heat exchange medium 8 is opposite to the net flow direction of the heat exchange fluid 9, so that the overall temperature difference (temperature gradient) is large, thus resulting in high heat exchange efficiency.

Preferably, the condensed water 10 from the heat exchange device 100 (evaporator) as shown in FIGS. 1 and 2 can also be passed through the upper edge of the casing 4 of the heat exchange device 200 (close to the second cavity 2). This third passage 53 (condensed water inflow pipe) is introduced into the casing 4. The condensed water 10 flows down along the inner surface of the casing 4, and exchanges heat with the heat exchange medium 8 and the air (heat exchange fluid 9), and the condensed water 10 absorbs the heat of the heat exchange medium 8 and the air. The housing 4 is led out of the second passage 52 from the upper edge by air. The diameter of the third passage 53 is substantially smaller than the diameter of the second passage 52 and the first passage 51, that is, the diameter of the condensate inflow pipe is substantially smaller than the diameter of the air inlet and the air outlet to prevent air from flowing in through the condensed water 10 In and out.

In this embodiment, the third passage 53 is disposed on the upper edge of the casing 4 (near the second cavity 2), but not limited thereto, the third passage 53 may also be disposed at the lower edge of the casing 4. (adjacent to the first cavity 1), the condensed water 10 is introduced into the casing 4 from the lower edge of the casing 4, and can still be exchanged by the air enthalpy and the heat exchange medium 8 and the air (heat exchange fluid 9), condensed water After absorbing the heat of the heat exchange medium 8 and the air, the casing 4 is taken out from the second passage 52 of the upper edge by air.

In an embodiment where the heat exchange device 200 is applied as a chiller, the chiller is a heat exchanger between three fluids (eg, heat exchange medium 8, air, and condensed water 10), wherein the heat exchange medium 8 is When the inside of the pipe member 3 flows, heat exchange is performed with the air and water flowing outside the pipe members 3. The temperature of the heat exchange medium 8 is higher than that of air and water, so heat is released to the air and water. Through the design of the tube diameter and bend radius of the appropriate spiral tube 3, the viscosity of the heat exchange medium 8, and the flow rate design, the heat exchange medium 8 generates radial agitation within the tubes 3, so that the heat exchange medium 8 is in a low flow. In the case of resistance, it increases its own temperature uniformity and indirectly increases the overall heat transfer efficiency. The design of the spiral tube 3 also greatly shortens the overall length of the cooler, and the heat exchange surface area per unit volume is also greatly increased.

The inner side of the radial section of the tube 3 of the cooler is wavy, which increases the contact area of the heat exchange medium 8 with the tubes 3, and the outer side of the radial section of the tubes 3 is wavy, which can be increased. The contact area of air and water with the tubes 3 can increase the overall heat transfer efficiency.

In summary, the present invention has the following advantages.

1. The heat exchange device of the present invention can be applied to an evaporator or/and a cooler, which not only increases heat exchange efficiency, but also reduces the weight, volume, and manufacturing cost of the heat exchange device.

2. The pipe fittings of the heat exchange device of the present invention can be directly formed by extrusion, and an excellent heat dissipation effect can be achieved without adding fins.

3. The heat exchange device of the present invention can reduce the flow resistance of the heat exchange medium through the design of the spiral pipe member, and the internal eddy current formed in the pipe member can increase the heat transfer effect.

4. The heat exchange device of the present invention can be used as an evaporator or a cooler, which can be applied to an air conditioning system, through the design of introducing the condensed water of the evaporator into the cooler, utilizing the water in the cooler to enhance the overall heat exchange device performance.

5. In a radial section of the tubular member of the heat exchange device of the present invention, at least one of the inner tube wall and the outer tube wall is wavy, which increases the heat exchange area.

The above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims.

1. . . First cavity

2. . . Second cavity

3. . . Pipe fittings

4. . . case

5. . . Pedestal

6. . . Bonding component

7. . . Sealing element

8. . . Hot swap media

9. . . Heat exchange fluid

10. . . Condensate

11. . . First cavity

12. . . First through hole

13. . . First base

14. . . First cover

twenty one. . . Second space

twenty two. . . Second through hole

twenty three. . . Second base

twenty four. . . Second cover

31. . . Inner wall of pipe fitting

32. . . Tube side wall

51. . . The first channel

52. . . Second channel

53. . . Third channel

100. . . Heat exchange device of the first embodiment of the present invention

200. . . Heat exchange device of the second embodiment of the present invention

Figure 1 shows a combination of the first embodiment of the heat exchange device of the present invention;

Figure 2 is an exploded view showing a first embodiment of the heat exchange device of the present invention;

3 is a schematic view showing a first cavity and a second cavity of the heat exchange device according to the first embodiment of the present invention;

4a to 4c are views showing a tube member having different radial cross-sectional shapes of a heat exchange device according to a first embodiment of the present invention;

Figure 5 is a view showing another embodiment of the heat exchange device of the first embodiment of the present invention; and

Figure 6 is a combination diagram showing a heat exchange device of a second embodiment of the present invention.

1. . . First cavity

2. . . Second cavity

3. . . Pipe fittings

4. . . case

5. . . Pedestal

6. . . Bonding component

7. . . Sealing element

13. . . First base

14. . . First cover

twenty three. . . Second base

twenty four. . . Second cover

51. . . The first channel

52. . . Second channel

53. . . Third channel

100. . . Heat exchange device of the first embodiment of the present invention

Claims (10)

A heat exchange device includes: a first cavity having a first space and at least one first through hole; a second cavity having a second space and at least one second through hole; and at least one tube member, Connecting the corresponding first through hole and the second through hole, the at least one pipe member is configured to pass a heat exchange medium, wherein at least one of the inner pipe wall and the outer pipe wall is in a radial cross section of the at least one pipe member Wavy. The heat exchange device of claim 1, wherein the at least one tube is a spiral tube or a straight tube. The heat exchange device of claim 1, wherein the two ends of the at least one tubular member respectively have a movable screwing member, and the movable screwing members are respectively screwed to the corresponding first through hole and the second through hole. The heat exchange device of claim 1, further comprising a casing connecting the first cavity and the second cavity and enclosing the at least one pipe member, the casing having a first passage and a second The first channel and the second channel are respectively disposed adjacent to the first cavity and the second cavity. The heat exchange device of claim 4, wherein the at least one tube member is configured to circulate the heat exchange medium from the first cavity to the second cavity, the second passage causing a heat exchange fluid to enter the housing, The heat exchange fluid exits the housing through the first passage. The heat exchange device of claim 4, wherein the at least one tube member is configured to circulate the heat exchange medium from the second chamber to the first chamber, the first passage causing a heat exchange fluid to enter the housing, The heat exchange fluid exits the housing through the second passage. The heat exchange device of claim 5 or 6, wherein the heat exchange fluid flows into the casing from a tangential direction. The heat exchange device of claim 4, wherein the housing further comprises a third passage disposed adjacent to the first cavity or the second cavity. The heat exchange device of claim 1, further comprising a base disposed at one end of the heat exchange device. The heat exchange device of claim 4, further comprising a base, the housing and the base being integral with the first cavity or the second cavity system.