TWI663371B - Evaporator structure - Google Patents

Abstract

An evaporator structure includes a heat exchange element, a heat conductive shell, and an upper cover, wherein the heat exchange element is disposed in the heat conductive shell, and the upper cover covers the heat conductive shell to close the heat exchange element, and the heat exchange The element has a plurality of lateral channels, and a first longitudinal cooling fluid channel is opened on each of the lower sides. A plurality of second longitudinal cooling fluid channels with a shorter length are provided near the central area. When the heat-conducting shell receives a heat source, The cooling fluid flows through the lateral channel toward the first longitudinal cooling fluid channel on both sides, and is guided through the longitudinal first cooling fluid channel and the lateral channel, so that the cooling fluid can flow toward the second longitudinal cooling fluid channel and uniform the cooling fluid. Bring it into the heat source area, to achieve the purpose of full area heat dissipation.

Description

Evaporator structure

The invention relates to an evaporator structure, which is to allow the cooling fluid to perform liquid-gas conversion inside, and to achieve the purpose of comprehensive heat dissipation through a special water channel design.

In recent years, the heat generation of the heat source generating device has been increasing rapidly with the refinement of the semiconductor process; how to improve the heat dissipation capacity of the heat source generating device and maintain the normal operation of the components has become a very important engineering issue. At present, the direct air cooling technology that is widely used has been unable to meet the demand for heat dissipation of many heat generating devices with high heat flux, and other solutions must be sought.

In the existing technology, in addition to the air cooling technology, the liquid and gas conversion of the cooling fluid is used to achieve the heat dissipation effect. This technology provides two sets of heat equalizers and two sets of connected pipe bodies. One set of heat equalizers is used to Evaporation to take away the absorbed heat, another set of heat equalizers is used to condense to reduce the temperature to return the output cooling cooling fluid for the heat dissipation cycle. The pressure in the two sets of heat equalizers is different, so the cooling fluid can automatically go back and forth. Conveying, but most of the homogenizers are simply fins or channels designed for cooling fluid to circulate in the homogenizer, which easily causes the heat source to be concentrated in a specific location, so the excessive evaporation water level at a specific location will be too low. The high temperature in the local location not only causes the heat dissipation effect to be unstable and uneven, but also reduces the service life more quickly.

An evaporator structure includes at least: a heat exchange element, the heat exchange element can be divided into a steam area and a water inlet area, and a barrier wall is provided between the steam area and the water inlet area. A plurality of horizontal channels running parallel to each other and penetrating vertically are formed inside the heat exchange element, and a longitudinal water inlet channel is set near the center above the water inlet area, and a plurality of vertical steam channels are set near the center above the steam area. The barrier wall is arranged so that the longitudinal water inlet channel and the longitudinal steam channel are not connected with each other, and the longitudinal water inlet channel and the longitudinal steam channel are arranged perpendicular to the lateral channel, and the heat exchange element is close to the bottom. A first longitudinal cooling fluid channel is opened on each side edge, and the first longitudinal cooling fluid channel runs through the vapor region, the water inlet region and under the barrier wall, so that the first longitudinal cooling fluid channel passes through the heat exchange element. Two end edges, and a plurality of second longitudinal cooling fluid channels are arranged near the center below the vapor zone, and the length of the second longitudinal cooling fluid channels is from one side to the barrier wall, so that the length of the second longitudinal cooling fluid channels is equal to the The longitudinal steam channel is the same, and the longitudinal water inlet channel is also blocked by the barrier wall, and it is not the same as the water inlet area. The second longitudinal cooling fluid channel is shorter than the first longitudinal cooling fluid channel, and the second longitudinal cooling fluid channel is staggered from the setting position of the longitudinal vapor channel; a heat conducting shell, the inside of the heat conducting shell is used for placing the A heat exchange element; an upper cover is used to cover the heat conductive shell, and a steam outlet and a water inlet are respectively provided on the upper cover, and the steam outlet corresponds to the position of the steam channel, and the water inlet corresponds to One of the longitudinal inlet channels is above the position.

In a preferred embodiment, the heat exchange element is integrally formed.

In a preferred embodiment, the area of the steam area is larger than that of the water inlet area, the length of the longitudinal water inlet channel is from one side to the barrier wall, and the length of the vertical steam channel is from one side to the barrier wall, so that the longitudinal steam The length of the channel is longer than the longitudinal inlet channel

As in a preferred embodiment, the length of the longitudinal vapor passage of the heat exchange element and the second longitudinal cooling fluid passage are the same.

In a preferred embodiment, the longitudinal vapor channel is located near the center of the vapor region. And the length from one side edge to the barrier wall, and the length of the longitudinal water inlet channel from the side edge to the barrier wall, so that the longitudinal vapor channel and the second longitudinal cooling fluid channel of the heat exchange element are blocked by the barrier wall , Are not connected to each other.

In a preferred embodiment, the second longitudinal cooling fluid channel is located near the center of the vapor zone and has a length from one side edge to the barrier wall, and the length of the longitudinal water inlet channel from one side edge to the barrier wall, so that The vapor channel of the heat exchange element and the second longitudinal cooling fluid channel are not connected to each other by the blocking wall.

1‧‧‧ heat exchange element

11‧‧‧Steam Zone

12‧‧‧Water intake area

13‧‧‧ barrier wall

14‧‧‧ horizontal passage

15‧‧‧ Longitudinal waterway

16‧‧‧longitudinal vapor channel

17‧‧‧ the first longitudinal cooling fluid channel

18‧‧‧ second longitudinal cooling fluid channel

2‧‧‧ Thermally conductive housing

3‧‧‧ Upper cover

31‧‧‧Steam Outlet

32‧‧‧ Inlet

4‧‧‧ heat source generator

5‧‧‧Heat fins

6‧‧‧Steam tube

7‧‧‧Cooling fluid pipe

8‧‧‧ condenser

A‧‧‧ cooling fluid

B‧‧‧Steam

[FIG. 1] It is a three-dimensional schematic diagram of the exploded structure of the evaporator structure of the present invention.

[Figure 2] A perspective view of the heat exchange element of the evaporator structure of the present invention from another perspective.

[Figure 3] Schematic sectional view of the structure of the evaporator of the present invention

[Fig. 4] It is a schematic sectional view showing the gaseous flow of the cooling fluid during the implementation of the evaporator structure of the present invention.

[Fig. 5] It is a schematic diagram of the three-dimensional appearance of the evaporator structure combined with the condenser of the present invention.

[Fig. 6] A schematic sectional view of the liquid flow of the cooling fluid during the implementation of the evaporator structure of the present invention.

[FIG. 7] It is a schematic plan view of the liquid flow of the cooling fluid in the evaporator structure of the present invention.

Regarding other technical contents, features and effects of the present invention, they will be clearly presented in the following detailed description of the preferred embodiments with reference to the drawings.

Please refer to FIGS. 1 to 3, which are schematic diagrams of an exploded structure of the evaporator structure of the present invention and a perspective view from another perspective. The evaporator structure includes a heat exchange element 1, a thermally conductive housing 2, and an upper cover 3. The heat exchange element 1 can be integrally formed or assembled. The heat exchange element 1 can be divided into a steam area 11 and a water inlet area 12. The area of the steam area 11 is larger than the water inlet area 12 and the steam area 11. There is a blocking wall 13 between the water inlet area 12 and the heat exchange element 1. A plurality of horizontal channels 14 parallel to each other and penetrating up and down are formed in the heat exchange element 1. A vertical inlet is provided near the center above the water inlet area 12. Water channel 15, the length of the longitudinal water channel 15 from one side to the barrier wall 13, a plurality of vertical steam channels 16 are opened above the steam area 11 near the center (in this embodiment, one channel is provided for the longitudinal water channel 15). There are three longitudinal steam channels 16), and the length of the longitudinal steam channel 16 is from one side to the barrier wall 13 so that the length of the longitudinal steam channel 16 is longer than the longitudinal water inlet channel 15 by the arrangement of the barrier wall 13 So that the longitudinal water inlet channel 15 and the longitudinal steam channel 16 are not connected with each other, and the longitudinal water inlet channel 15 and the longitudinal steam channel 16 are arranged perpendicular to the lateral channel 14; below the heat exchange element 1 A first longitudinal cooling fluid channel 17 is respectively opened near the edges of both sides, and the first longitudinal cooling fluid channel 17 runs through the vapor region 11, the water inlet region 12, and the barrier wall 13 to make the first longitudinal cooling fluid channel 17 17 runs through the two end edges of the heat exchange element 1, and a plurality of second longitudinal cooling fluid passages 18 are provided near the center below the vapor zone 11, and the length of the second longitudinal cooling fluid passages 18 is from one side to the barrier wall 13 So that the length of the second vertical cooling fluid channel 18 is the same as the length of the vertical vapor channel 16 and the vertical water inlet channel 15 is also blocked by the barrier wall 13 and is not connected to the water inlet area 12 (in this embodiment) The second longitudinal cooling fluid channel 18 is provided with four channels, and the first longitudinal cooling fluid channel 17 is provided with two channels), and the second longitudinal cooling fluid channel 18 and the longitudinal vapor channel 16 are disposed staggered; The heat-conducting shell 2 is used for placing the heat-exchange element 1 inside; the upper cover 3 is used to cover the heat-conducting shell 2, and the upper covers 3 are respectively opened. There is a steam outlet 31 and a water inlet 32, and the steam outlet 31 corresponds to a position above one of the longitudinal steam channels 16, and the water inlet 32 corresponds to a position above the longitudinal water inlet channel 15.

In general, each of the heat-conducting shells 2 has a predetermined amount of cooling fluid A and vapor body B, as shown in Figs. 4 and 5, and when used, the bottom surface of the heat-conducting shell 2 is fixed to a heat source generating device. 4, the heat source generating device 4 will correspond to the vapor region of the heat exchange element 1, and a heat dissipation fin 5, a vapor duct 6 and a cooling fluid duct 7 can be installed on the upper cover 3 together. The steam pipe 6 and a cooling fluid pipe are connected to a condenser 8. When the heat source generating device 4 generates a heat source, the heat energy generated by the heat source generating device 4 can be introduced into the heat conducting housing 2 to generate a heat source region to the heat source area. In the vapor zone 11 of the heat exchange element 1, when the heat source received by the thermally conductive housing 2 reaches a predetermined evaporation temperature, the cooling fluid A located in the lateral passage 14 and the second longitudinal cooling fluid passage 18 of the heat exchange element 1 is It will evaporate into the vapor body B due to the high temperature. The vapor body B will be guided through the lateral channel 14 and rise and converge to the plurality of longitudinal vapor channels 16, and release the pressure through the plurality of longitudinal vapor channels 16 to avoid the inside of the thermally conductive housing 2. Stress is too concentrated The vapor body B will be transmitted to the condenser 8 through the vapor outlet 31 and the vapor vent pipe 6. After the temperature of the condenser 8 is reduced, the vapor body B will be converted into the cooling fluid A, and because the cooling fluid After A evaporates into a gaseous state and enters the condenser 8, the pressure in the heat exchange element 1 becomes smaller, so that the cooling fluid A entering the condenser 8 becomes a heat exchange that must be returned to the evaporator via the cooling fluid passage pipe 7 Element 1; afterwards, as shown in FIGS. 4, 6, and 7, the return flow of the cooling fluid A will sequentially pass through the water inlet 32, the longitudinal water inlet channel 15 and enter each of the lateral channels 14, because the second longitudinal cooling fluid channel 18 It is not in communication with the longitudinal water inlet channel 15. Therefore, when the cooling fluid A flows in through the longitudinal water inlet channel 15, the cooling fluid A flows to both sides through the lateral channel 14 and then through the first longitudinal cooling fluid. The channel 17 is guided for longitudinal flow, and then flows through the lateral channel 14 to the second longitudinal cooling fluid channel 18, and the cooling fluid A can be directed toward The heat source area generated by the heat source generating device 4 flows in a horizontal position and a vertical position to transfer a large amount of cooling fluid A to the heat source area, to prevent the cooling fluid A from being cooled too much due to the inflow of too little, resulting in a significant increase in temperature and pressure. Therefore, with the arrangement of the first longitudinal cooling fluid passage 17 and the second longitudinal cooling fluid passage 18, the cooling fluid A can be brought into the central heat source region from the outermost side, so that each position of the heat exchange element will be related to the The cooling fluid A comes into contact to achieve the purpose of heat dissipation, and when the cooling fluid A enters the heat source area, it will be heated and evaporated again into the vapor body B, and it must pass through the vapor passage 13 and the vapor outlet 31 to enter the through pipe 6 to the condenser 8 in sequence. This keeps circulating to achieve the purpose of circulating heat; after this, it can be seen that the cooling fluid A is heated to evaporate into the vapor body B in the vapor zone 11 of the heat exchange element 1, and then the tropical heat is transferred to the condenser 8 and formed through condensation. The cooling fluid A flows back to the water inlet area 12 of the heat exchange element 1. Since a barrier wall 13 is provided between the water inlet area 12 and the vapor area 11, the cooling fluid A and the steam The gas B plays a respective role in the heat exchange element 1 to achieve the effects of gas-liquid separation, cold-heat alternation and automatic circulation.

In addition, as shown in FIG. 5, since the installation positions of the second longitudinal cooling fluid passage 18 and the vapor passage 13 are staggered, the area through which the cooling fluid A flows in each of the transverse passages 14 can be increased, thereby improving the heat dissipation. benefit.

The evaporator structure provided by the present invention particularly improves the configuration of the cooling fluid channel in the heat exchange element, thereby improving the path of the cooling fluid flowing in the interior, so as to improve the overall heat dissipation benefit. The advantages are as follows:

1. The heat exchange element provided by the present invention is specially divided into a water inlet area and a steam area, and only the first longitudinal cooling fluid channel can communicate with the water inlet area and the steam area. Therefore, after the cooling fluid enters the longitudinal water inlet upper channel, it must be It is forced to flow in both directions, and then the cooling fluid is guided to the second longitudinal cooling fluid channel through the lateral channel to return to the vapor region of the heat exchange element to cool The fluid will evenly flow through the water inlet area and steam area of the entire heat exchange element, allowing the cooling fluid to circulate in the heat exchange element with the largest contact area, so it has a full area heat dissipation that improves the overall heat dissipation efficiency.

2. The heat exchange element provided by the present invention is particularly provided with a plurality of second longitudinal cooling fluid channels at a position below the vapor zone, and the distance between the channels is shortened due to an increase in the number, so that the cooling fluid can be balanced in The water level between each of the second longitudinal cooling fluid channels avoids a situation where the water level in a specific position is too low and causes a high temperature in a local position. In addition, the pressure in the heat exchange element can be averaged.

The present invention has been disclosed as above through the above-mentioned embodiments, but it is not intended to limit the present invention. Anyone with ordinary knowledge in this technical field will understand the aforementioned technical features and embodiments of the present invention without departing from the scope of the present invention. Within the spirit and scope, minor changes and retouching are not allowed. Therefore, the scope of patent protection of the present invention shall be subject to the definition in the claims attached to this specification.

Claims (6)

An evaporator structure includes at least: a heat exchange element, the heat exchange element can be divided into a steam area and a water inlet area, and a barrier wall is provided between the steam area and the water inlet area, and the heat exchange element A plurality of horizontal channels running parallel to each other and penetrating up and down are formed inside, and a longitudinal water inlet channel is opened near the center above the water inlet area, and a plurality of vertical steam channels are opened near the center above the vapor area, through the barrier wall The vertical inlet channel and the vertical steam channel are not connected with each other, and the vertical inlet channel and the vertical steam channel are perpendicular to the horizontal channel. The heat exchange element is located close to the edges of both sides. A first longitudinal cooling fluid channel is respectively opened, the first longitudinal cooling fluid channel runs through the vapor region, the water inlet region and below the barrier wall, and a plurality of second longitudinal cooling fluids are arranged near the center below the vapor region. Channel, the length of the second longitudinal cooling fluid channel is shorter than the length of the first longitudinal cooling fluid channel, and the second longitudinal cooling fluid channel The longitudinal steam passages are staggered in position; a thermally conductive housing inside which the heat exchange element is placed; an upper cover for covering the thermally conductive housing, and a steam outlet and an inlet are respectively provided on the upper cover. A water outlet, and the steam outlet corresponds to the position above the steam passage, and the water inlet corresponds to one of the positions of the longitudinal water inlet passage. The evaporator structure according to claim 1, wherein the heat exchange element is integrally formed. The evaporator structure according to claim 1, wherein the length of the longitudinal vapor passage of the heat exchange element is the same as that of the second cold longitudinal fluid passage. The evaporator structure according to claim 1, wherein the area of the vapor area is larger than the water inlet area. The evaporator structure according to claim 1, wherein the longitudinal vapor passage is located near the center of the vapor zone, and the length is from one side edge to the barrier wall, and the length of the longitudinal water inlet passage is from one side edge to the barrier wall. So that the longitudinal vapor passage and the second longitudinal cooling fluid passage of the heat exchange element are not connected to each other by a blocking wall. The evaporator structure according to claim 1, wherein the second longitudinal cooling fluid channel is located near the center of the vapor zone, and the length is from one side edge to the barrier wall, and the length of the longitudinal water inlet channel is from one side edge to The barrier wall makes the longitudinal vapor channel and the second longitudinal cooling fluid channel of the heat exchange element not communicate with each other by the barrier wall.