CN214757592U

CN214757592U - Floating heat dissipation unit

Info

Publication number: CN214757592U
Application number: CN202120992878.3U
Authority: CN
Inventors: 刘汉敏; 周小祥
Original assignee: Asia Vital Components Shenzhen Co Ltd
Current assignee: Asia Vital Components Shenzhen Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-11-16
Anticipated expiration: 2031-05-10

Abstract

The utility model provides a heat dissipation unit floats, including an upper plate and a hypoplastron, this hypoplastron covers with this upper plate and closes and delimits a cavity jointly, the intussuseption of this cavity is filled with a working fluid, this upper plate respectively has an anterior segment with this hypoplastron, a back end and one are located the middle section between this anterior segment and this back end, the plate thickness of this anterior segment and this back end of this upper plate wherein arbitrary or both of this upper plate and this hypoplastron is greater than the plate thickness in this middle section, make this middle section form one and float the flexure section and can float the adjustment, can have the efficiency of the height drop of the adjustment of floating when providing this heat dissipation unit connection that floats.

Description

Floating heat dissipation unit

Technical Field

The present invention relates to a floating heat dissipation unit, and more particularly to a floating heat dissipation unit capable of adjusting height drop and avoiding structural deformation when connected.

Background

The heat pipe is a hollow metal pipe body, and a proper amount of working fluid is filled in a cavity of the pipe body. The heat pipe has the heat dissipating principle that two-phase change of working fluid is adopted, that is, the working fluid absorbs heat to form vaporization on a heat source corresponding to an evaporation section at one end of the pipe body, the liquid phase is changed into gas phase, and the heat is diffused and transferred in the pipe body and passes through an insulating section to a condensation section at the other end of the pipe body, so that the purpose of remote heat transfer is achieved.

Generally, a conventional heat pipe is usually combined with a heat dissipation unit (such as a fastening fin set or an aluminum extruded fin set or a heat sink) to form a heat dissipation module, so as to be assembled in an electronic device (such as a computer, a server or a communication case, a mobile phone or a handheld device) to dissipate heat generated by a heat source on a board.

However, the packaging structure of each heat source on the board of the electronic device has a height difference (with different heights), so that a height difference is formed between each heat source, and the heat dissipation module is in contact with the evaporation section of each heat pipe on the heat source and is overlapped or combined with the heat sink to form a height difference, but the combination of the height difference can cause the heat transfer efficiency of the heat pipe to be reduced or disabled; the reason is that the tube body of the heat pipe is made of metal plates with the same thickness, so that the thicknesses of the evaporation section, the heat insulation section and the condensation section of the heat pipe are consistent; when the height difference between the evaporation section and the condensation section is required to be adjusted according to the height difference, if the heat insulation section is adjusted by pulling and bending or bending due to the characteristics of the metal material and the uniform thickness of the plate so as to meet the requirement of the height difference, the bridge force that the two sides of the evaporation section and the condensation section of the heat pipe are mutually pulled can cause inward extrusion or outward pulling deformation of the heat insulation section (transmission section), and further the problems of poor heat transfer and radiation efficiency and even failure of the heat pipe are caused.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a floating heat dissipation unit that can have the effect of floating height difference adjustment when a floating heat dissipation unit is connected, and can avoid the structural deformation or the incapability of the floating heat dissipation unit caused by the bridge connection force generated by the height difference connection.

Another objective of the present invention is to provide a floating heat dissipation unit, which is thinner than the middle section of the upper plate and/or the lower plate, and has a floating deflection section for floating adjustment, so that the floating heat dissipation unit can be assembled and aligned with each type of heat dissipation unit and adjusted for height difference.

To achieve the above object, the present invention provides a floating heat dissipation unit, which comprises an upper plate and a lower plate, wherein the lower plate covers the upper plate and defines a chamber together with the upper plate, the chamber is filled with a working fluid, the upper plate and the lower plate respectively have a front section, a rear section and a middle section located between the front section and the rear section, the thickness of the front section and the rear section of any or both of the upper plate and the lower plate is greater than that of the middle section, and the middle section forms a floating bending section for floating adjustment.

The chamber is provided with a capillary structure formed on the inner side of the lower plate or the upper and lower plates. The plate thickness of the front section and the rear section is more than or equal to 0.5mm, and the plate thickness of one of the upper plate and the lower plate at the middle section is equal to 0.08mm and less than 0.5 mm.

The middle section is provided with a reinforcing rib, the reinforcing rib is respectively connected with the front section and the middle section or connected with the middle section and the rear section or connected with the front section and the rear section through the middle section in an extending way, and the plate thicknesses of the front section and the rear section are the same or different. In addition, the upper plate can be formed by splicing a front section plate body, a middle section plate body, a rear section plate body and the like, and the plate thickness of the front section plate body and the plate thickness of the rear section plate body are larger than that of the middle section plate body.

The lower plate is formed by splicing a front section plate body, a middle section plate body and a rear section plate body, and the plate thickness of the front section plate body and the plate thickness of the rear section plate body of the lower plate are larger than that of the middle section plate body of the lower plate.

The upper plate and the lower plate are made of metal, and the metal is made of aluminum, stainless steel, copper, titanium or alloy.

The floating heat dissipation unit can be a temperature equalization plate, a hot plate or a flat heat pipe or a device with two-phase flow.

Therefore, through the utility model discloses the design of heat dissipation unit floats for can have the efficiency of the adjustment height drop of floating when providing this heat dissipation unit connection that floats, and can avoid this heat dissipation unit that floats to cause the problem of structural deformation because of the bridging force of connecting the production when the highland drop. In addition, the utility model discloses can also be suitable for the source that generates heat of the difference of different heights on the mainboard in various electronic device (such as server, computer or communication machine case) to effectively let the effect that the both ends of heat dissipation unit that floats can meet with corresponding heating element and different or the same type heat dissipation unit respectively.

Drawings

Fig. 1A is a perspective view of an embodiment of the present invention.

Fig. 1B is a perspective view of the present invention in some other embodiments.

Fig. 2 is a schematic combined cross-sectional view of an embodiment of the present invention.

Description of reference numerals: a floating heat dissipation unit 1; an upper plate 11; an upper plate body 111; a lower plate 12; a lower plate body 121; a chamber 13; an evaporation zone 131; a transmission area 132; a condensation zone 133; a working fluid 14; a front section 151; a rear section 152; a middle section 153; reinforcing ribs 1531; a gap 1532; a capillary structure 18.

Detailed Description

The above objects, together with the structure and functional characteristics of the invention, will be best understood from the following description of the preferred embodiments when read in connection with the accompanying drawings.

Referring to fig. 1A and 2, in the present embodiment, the floating heat dissipation unit 1 is a flat heat pipe, but not limited thereto. In practical implementation, the floating heat dissipation unit 1 can also be a temperature equalization plate or a hot plate. The floating heat dissipation unit 1 includes an upper plate 11 and a lower plate 12 covering the upper cover, the upper plate 11 and the lower plate 12 are made of metal or nonmetal, the metal is aluminum, stainless steel, copper, titanium or alloy, and the nonmetal is plastic, ceramic or stone.

The upper plate 11 and the lower plate 12 each have a front section 151, a rear section 152, and a middle section 153 located between the front section 151 and the rear section 152, two sides of the middle section 153 are respectively connected to the front section 151 and the rear section 152, the plate thicknesses of the front section 151 and the rear section 152 are greater than or equal to 0.5mm, the plate thickness of the middle section 153 is equal to or equal to 0.08mm and less than 0.5mm, in this embodiment, the floating heat dissipation unit 1 is a flat heat pipe, the plate thicknesses of the upper plate 11 and the lower plate 12 are preferably selected such that the plate thicknesses of the front section 151 and the rear section 152 are 0.2mm, and the plate thickness of the middle section 153 is selected such that 0.08mm, but not limited thereto. In practical implementation, the plate thicknesses of the upper plate 11 and the lower plate 12 of the floating heat dissipation unit 1, which is a uniform temperature plate or a hot plate, are preferably selected to be 0.5mm for the front section 151 and the rear section 152 and 0.08mm for the middle section 153.

The plate thickness of the front section 151 and the rear section 152 of either or both of the upper plate 11 and the lower plate 12 is greater than that of the middle section 153, so that the middle section 153 can form a floating flexible section to float and adjust the height difference, that is, the floating flexible section can be flexed or bent, and the position of the section can float according to the height difference between the front section 151 and the rear section 152 to pull and adjust the height difference; in the present embodiment, the plate thickness of each of the front section 151 and the rear section 152 of the upper plate 11 and the lower plate 12 is the same, the plate thickness of each of the front section 151 and the rear section 152 of the upper plate 11 and the lower plate 12 is greater than the plate thickness of the middle section 153, that is, the plate thickness (e.g. 0.2mm) of each of the front section 151 and the rear section 152 of the upper plate 11 and the lower plate 12 is the same as the plate thickness (e.g. 0.2mm) of each of the rear section 152, and the plate thickness (e.g. 0.08mm) of each of the middle sections 153 of the upper plate 11 and the lower plate 12 is less than the plate thickness of each of the front section 151 and the rear section 152, so that the floating bending section formed by each of the middle sections 153 of the upper plate 11 and the lower plate 12 can provide the function of adjusting the height difference between the two ends by the floating bending section when the two ends of the floating heat dissipating unit 1 are connected through the floating bending section capable of bending (bending) bending (bending) up, down, left, right, or left) to adjust the two ends in a floating way, and is suitable for the effect of floating adjustment up and down and/or left and right by height difference between two elements (such as an electronic element and a heat dissipation unit). Wherein the utility model discloses this heat dissipation unit 1 that floats quantity (if heat dissipation unit 1 floats more than two) can be in advance as required radiating generate heat the quantity of source (if generate heat the source more than two) and match mutually and paste and establish.

In an embodiment, the plate thicknesses of the front section 151 and the rear section 152 of the upper plate 11 are different, and the plate thicknesses (e.g., 0.15mm) of the front section 151 and the rear section 152 of the upper plate 11 (or the lower plate 12) are greater than the plate thickness (e.g., 0.09mm) of the middle section 153, and the plate thicknesses of the front section 151, the rear section 152 and the middle section 153 of the lower plate 12 (or the upper plate 11) are all the same, so that the floating bending section is not formed in the middle section 153 of the lower plate 12, and the floating bending section is formed only by the plate thickness of the middle section 153 of the upper plate 11 being thinner than the respective front section 151 and rear section 152, so that the floating heat dissipation unit 1 can achieve the effect of single-side micro-floating adjustment.

In other embodiments, referring to fig. 1B, the middle section 153 of the upper plate 11 (or the lower plate 12) is provided with a reinforcing rib 1531, the reinforcing rib 1531 connects the front section 151 and the middle section 153 or connects the middle section 153 and the rear section 152 respectively or connects the front section 151 to the rear section 152 through the middle section 153 extending, the reinforcing rib 1531 is used to enhance the structural strength of the middle section 153 position and also has a supporting function, instead of implementing a free end of the reinforcing rib 1531 and the rear section 152 being unconnected and defining a gap 1532 therebetween, the gap 1532 is used as a space for the middle section 153 to be able to adjust the height difference in a micro-floating manner.

In addition, the lower plate 12 and the upper plate 11 define a chamber 13 for vapor-liquid phase change, the chamber 13 is filled with a working fluid (such as pure water), a capillary structure 18 is disposed in the chamber 13, the capillary structure 18 can be sintered powder, grooves, meshes, fibers, strips, or any combination thereof, the capillary structure 18 can be selectively formed on the inner side of the lower plate 12 or the upper and

lower plates

11, 12, and the outer side of the front section 151 of the lower plate 12 is in contact with a heat source. The floating heat dissipation unit 1 is a flat heat pipe, and the chamber 13 is sequentially divided into an evaporation area 131, a transmission area 132 and a condensation area 133, the evaporation area 131 and the condensation area 133 are respectively located at the front section 151 and the rear section 152 of the floating heat dissipation unit 1, and the transmission area 132 is located at the middle section 153 of the floating heat dissipation unit 1 and also located between the evaporation area 131 and the condensation area 133.

Furthermore, in practical implementation of the present invention, the floating heat dissipation unit 1 can be combined with different or the same types of heat dissipation units, for example, on a motherboard in an electronic device (not shown) having a plurality of heat sources (such as a central processing unit and a graphic display), and when there is a requirement for adjusting the height difference between the front section 151 and the rear section 152 of the floating heat dissipation unit 1, the height difference between the front section 151 and the rear section 152 can be adjusted in a floating manner by the floating flexing section (i.e. the middle section 153), so as to effectively reduce the bridge force between the front section 151 and the rear section 152 of each floating heat dissipation unit 1, which is pulled by the different heights, and further avoid the problem of structural deformation of the floating heat dissipation unit 1. Furthermore, rely on this the utility model discloses each heat dissipation unit 1 that floats has the flexible section of floating adjustment of function of floating, can be suitable for and combine on the heat dissipation unit of various types and not co-altitude hole site.

Therefore, through the utility model discloses this design of heat dissipation unit 1 floats for can have the efficiency of the height drop of adjustment that floats when providing this heat dissipation unit 1 that floats and connect, and avoid current heat pipe to take place inwards to extrude or outwards drag the bridging force that produces because of connecting when the height drop and cause structural deformation, and then cause the heat conduction radiating efficiency of heat pipe not good, the problem that became invalid even.

Furthermore, the utility model discloses can also be suitable for the heating element (for example single chip or other heating electronic component) of the different height drops on the mainboard in various electronic device (for example server, computer or communication machine case) to use, make this unsteady radiating element 1's both ends (being anterior segment 151 and back end 152) assemble the difference in height that produces on corresponding heating element and radiator, accessible the unsteady flexure section (being middle section 153) come the difference in height between adjustment anterior segment 151 and back end 152 to effectively let the effect that the both ends of unsteady radiating element 1 can meet with the source of generating heat and different or the same type radiating element that correspond respectively.

In an alternative embodiment, the upper plate 11 and the lower plate 12 of the floating heat dissipation unit 1 are respectively formed by splicing front-section 151, middle-section 153, and rear-section 152 plates (such as front-section plate, middle-section plate, and rear-section plate), the plate thickness of the front-section plate and the rear-section plate of the upper plate 11 is greater than that of the middle-section plate of the upper plate 11, and the plate thickness of the front-section plate and the rear-section plate of the lower plate 12 is greater than that of the middle-section plate of the lower plate 12.

Claims

1. A floating heat sink unit, comprising:

an upper plate; and

the upper plate and the lower plate are respectively provided with a front section, a rear section and a middle section positioned between the front section and the rear section, and the plate thickness of the front section and the rear section of the upper plate and/or the lower plate is larger than that of the middle section, so that the middle section forms a floating bending section which can be adjusted in a floating manner.

2. The floating heat sink unit of claim 1, wherein: the chamber is internally provided with a capillary structure which is formed on the inner sides of the lower plate or the upper plate and the lower plate.

3. The floating heat sink unit of claim 1, wherein: the plate thickness of the front section and the rear section is greater than or equal to 0.5mm, and the plate thickness of the upper plate or the lower plate at the middle section position is equal to 0.08mm and less than 0.5 mm.

4. The floating heat sink unit of claim 1, wherein: the middle section is provided with a reinforcing rib, the reinforcing rib is connected with the front section and the middle section, or the reinforcing rib is connected with the middle section and the rear section, or the reinforcing rib is connected with the front section and extends to the rear section through the middle section, and the plate thicknesses of the front section and the rear section are the same or different.

5. The floating heat sink unit of claim 1, wherein: the upper plate is formed by splicing a front section plate body, a middle section plate body and a rear section plate body, and the plate thickness of the front section plate body and the plate thickness of the rear section plate body are larger than that of the middle section plate body.

6. The floating heat sink unit of claim 5, wherein: the lower plate is formed by splicing a front section plate body, a middle section plate body and a rear section plate body, and the plate thickness of the front section plate body and the rear section plate body of the lower plate is larger than that of the middle section plate body of the lower plate.

7. The floating heat sink unit of claim 1, wherein: the upper plate and the lower plate are made of metal, and the metal is made of aluminum, stainless steel, copper, titanium or alloy.

8. The floating heat sink unit of claim 1, wherein: the floating heat dissipation unit is a temperature equalization plate, a hot plate or a flat heat pipe.