CN201780546U

CN201780546U - Heat radiating device

Info

Publication number: CN201780546U
Application number: CN2010205363475U
Authority: CN
Inventors: 孙英; 那志刚
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2010-09-17
Filing date: 2010-09-17
Publication date: 2011-03-30
Anticipated expiration: 2020-09-17

Abstract

The utility model discloses a heat radiating device which is positioned inside a chassis and comprises a heat pipe, a base plate and a heat radiating sheet group, wherein the base plate is connected with the heat radiating sheet group through the heat pipe, the base plate is fixed on a heating element, the heat radiating sheet group is positioned above the heating element, a bottom plate of the chassis is provided with an air inlet, a top plate of the chassis is provided with an air outlet, the air inlet and the air outlet correspond to the heat radiating sheet group and form air ventilation for carrying out heat exchange on the heat radiating sheet group. The heat pipe is in contact with the heat radiating sheet group inside the chassis for heat radiation, thus the step of better laminating the heat pipe to the inner surface of the chassis is avoided, and the assembling procedure of the whole computer is greatly simplified.

Description

A kind of heat abstractor

Technical field

The utility model relates to field of computer technology, particularly relates to a kind of heat abstractor.

Background technology

Along with constantly the popularizing and go deep into popular life of computing machine, it is used to be calculated by initial specialty and develops rapidly to polynary directions such as work, life, amusements.And being accompanied by the raising of computing power, the power of computing machine, need in time dispel the heat to computing machine in order to guarantee the operate as normal of computing machine also in continuous increase.

Be to adopt fan that computing machine is dispelled the heat at present.But fan can produce very big noise, has had a strong impact on the comfort level when people use a computer.

Existing no fan desktop computer, normally with cabinet surface double as heat-delivery surface, the heat that chip produces carries out exchange heat by the cabinet surface with air and solves heat dissipation problem.In the cabinet of described no fan desktop computer, all heater members all need to transmit heat by heat pipe or hot weld dish and the intact applying of cabinet inside surface.

But in order to reach the purpose of timely heat radiation, heat pipe or hot weld dish in the above-mentioned no fan desktop computer need carry out good fit with the cabinet inside surface, and the assemble flow more complicated is unfavorable for producing in enormous quantities.

The utility model content

The purpose of this utility model provides a kind of heat abstractor, to simplify the assemble flow of no fan desktop computer.

The utility model provides a kind of heat abstractor, and described heat abstractor is positioned at cabinet inside, and described heat abstractor comprises heat pipe, substrate and groups of fins;

Described substrate is connected by heat pipe with groups of fins, and substrate is fixed on the heater members, and described groups of fins is positioned at the top of described heater members;

Offer air intake vent on the base plate of described cabinet, the top board of cabinet offers air outlet, and described air intake vent is all corresponding with groups of fins with air outlet, and described air intake vent and air outlet form cross-ventilation described groups of fins is carried out heat interchange.

Heat abstractor of the present utility model contacts heat radiation with groups of fins at cabinet inside by heat pipe, has avoided heat pipe and cabinet inside surface are carried out the step of good fit, makes that the assemble flow of whole computing machine is significantly simplified.

Description of drawings

Fig. 1 is the synoptic diagram of heat abstractor of the present utility model;

Fig. 2 is the synoptic diagram along A-A line among Fig. 1;

Fig. 3 is the schematic cross-section of an embodiment of substrate of the present utility model;

Fig. 4 is the structural representation of heat abstractor of the present utility model under first application scenarios;

Fig. 5 is the structural representation of heat abstractor of the present utility model under second application scenarios;

Fig. 6 is the structural representation of heat abstractor of the present utility model under the 3rd application scenarios.

Embodiment

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model embodiment is described in further detail below in conjunction with the drawings and specific embodiments.

The utility model provides a kind of heat abstractor, and as shown in Figure 1, described heat abstractor 1 is positioned at computer cabinet 3 inside, and the mainboard 2 of computing machine is fixed on the sidewall of cabinet 3, and hard disk 21, heater members 22 etc. are installed on the mainboard 2.

Described heat abstractor 1 comprises: substrate 11, heat pipe 12 and groups of fins 13.

Heater members 22 mainly is a chip, as cpu chip; For the mainboard 2 that independent video card is installed, heater members 22 also comprises independent video card chip; The power supply of most of desktop computer is installed in cabinet 3 inside, and to this, heater members 22 also comprises power supply.

Described substrate 11 is connected by heat pipe 12 with groups of fins 13, and substrate 11 is fixed on the heater members 22.The fixed form of substrate 11 and heater members 22 can be for being spirally connected or buckle is connected.

Heat pipe 12 is preferably heat conductivility good metal or nonmetallic materials, as copper, aluminium etc.One end of the heat pipe 12 that is connected with substrate 11 is parallel to substrate 11.Heat pipe 12 can be fixed by welding in substrate 11.Heat pipe 12 can be positioned at the one side of substrate 11 back to heater members 22, is absorbed the heat of heater members 22 generations and is passed to heat pipe 12 by substrate 11, and heat pipe 12 dispels the heat these heat transferred groups of fins 13 again.Preferably, heat pipe 12 is between substrate 11 and heater members 22, because the thermocontact area between heat pipe 12 and substrate 11 parallel connections can increase heat pipe 12 and the heater members 22, heat pipe 12 can the faster absorption heater members 22 heats that produce, and heat transferred dispelled the heat to groups of fins 13.

Groups of fins 13 is positioned at the top of heater members 22, and like this, the heat that can avoid groups of fins 13 to shed carries out post bake to heater members 22.

Described heat pipe 12 is at least one, as shown in Figure 2, and the part that heat pipe 12 is connected with substrate 11 and the surperficial parallel applying of heater members 22, and be fixed on heater members 22 surfaces by substrate 11.

Preferably, substrate 11 has groove towards the one side of heater members 22, heat pipe 12 can be embedded in the described groove, is fitted on the heater members 22 towards heat pipe 12 tube walls of heater members 22, and heat pipe 12 and substrate 11 are undertaken affixed by welding (as soldering etc.) or interference fit.Because the groove opposite heat tube 12 on the substrate 11 has position-limiting action, make the affixed more firm of heat pipe 12 and substrate 11, so that more stable with the thermo-contact of heater members 22.Thus, heat pipe 12 is equal substantially towards the one side of heater members 22 with substrate 11 with heater members 22 bonding surfaces, and substrate 11 is more firm with being connected of heater members 22.

Groups of fins 13 is made of a large amount of heat radiator, is preferably fin, and fin is more frivolous, can be materials such as carbon steel, galvanized sheet, stainless steel, aluminium alloy.One end of the heat pipe 12 that is connected with groups of fins 13 can penetrate groups of fins 13, to reach the good thermo-contact with groups of fins 13.Heat pipe 12 can be welding or interference fit with the mode of fixedlying connected of groups of fins 13.

Because all leave the space between adjacent two heat radiator in the groups of fins 13, heat pipe 12 can penetrate from the diverse location of groups of fins 13.For the situation that many heat pipes 12 are arranged, heat pipe 12 can penetrate groups of fins 13 from different positions, and fixes with groups of

fins

13, and 12 pairs of groups of fins 13 of heat pipe can play the effect of support fixation; For the situation of having only a heat pipe 12, can make described heat pipe 12 extend through the other end from an end of groups of fins 13, realize the support fixation of 12 pairs of groups of fins 13 of a heat pipe.

The base plate 31 of cabinet 3 offers air intake vent, and the top board 32 of cabinet 3 offers air outlet, and described air intake vent is all corresponding with groups of fins 13 with air outlet, and described air intake vent and air outlet form cross-ventilation described groups of fins 13 is carried out heat interchange.Described air intake vent can comprise the inlet air hole of a plurality of spaces, and described air outlet can comprise the air outlet opening of a plurality of spaces respectively, and described inlet air hole and air outlet opening can be circle, polygon etc.In addition, two side plates of cabinet 3 can also be offered the ventilating opening corresponding with groups of fins 13 respectively, to adapt to the desktop computer of horizontal-vertical double-purpose.

In addition, substrate 11 can also be processed into aluminium extruded type surface (referring to Fig. 3) back to the one side of heater members, and heater members 22 is carried out auxiliary heat dissipation.Though most of heat that heater members 22 produces all is delivered to groups of fins 13 by heat pipe 12, but the heat that small part is also arranged can be stayed in the substrate 11, therefore, the air at room temperature that air intake vent enters can tentatively dispel the heat to substrate 11, air continues upwards to flow, and carries out main heat interchange in the position of groups of fins 13, afterwards, heated air is discharged cabinet 3 from air outlet, and so circulation realizes the heat radiation to heater members 22.

Introduce three kinds of application scenarioss below:

One, for small-size computer, power supply can adopt AC power source adapter, and heater members 22 has only the cpu chip on the mainboard, and heat abstractor 1 comprises a substrate 11, two above heat pipes 12 and groups of fins 13 (referring to Fig. 4).

Heat pipe 12 penetrates groups of fins 13 from different directions, and extends in groups of fins 13, increases the contact area of heat pipe 12 and groups of fins 13.

Two, for small-size computer, heater members 22 has only the cpu chip on the mainboard, and heat abstractor 1 comprises a substrate 11, a heat pipe 12 and a groups of fins 13 (referring to Fig. 5).

After heat pipe 12 penetrates groups of fins 13 from an end of groups of fins 13, extend to the other end of groups of fins 13 always.Certainly, heat pipe 12 also can penetrate groups of fins 13 from the position near groups of fins 13 1 ends and extend to the other end.

Three, for common desktop computer, heater members 22 comprises cpu chip and power supply, and then the heat abstractor 1 of cabinet inside comprises two substrates 11, many heat pipes 12 and a groups of fins 13 (referring to Fig. 6).

Each heater members 22 corresponding substrate 11 is fixedly connected with an above heat pipe 12 on each substrate 11, all heat pipes 12 are connected to groups of fins 13 at last.

The quantity of substrate 11 can be decided according to the concrete quantity of heater members 22, and each heater members 22 needs at least one heat pipe 12 to be connected to groups of fins 13, and the whole heater members 22 in the cabinet 3 can a shared groups of fins 13.

Have two above heater members 22, heat pipe 12 quantity in the situation more than three for shown in Figure 6, because heat pipe 12 all can penetrate groups of fins 13 at last, can avoid the layout between the heat pipe 12 to conflict mutually by adjusting the length that heat pipe 12 penetrates groups of fins 13 in advance; When the heat radiator area of groups of fins 13 is enough big, also can take mode parallel between the heat pipe 12 to avoid the conflict of heat pipe layout.

Heat abstractor of the present utility model can save fan, mainly be the heat that heater members produces to be delivered to groups of fins fast by heat pipe, adopt the natural air convection current that groups of fins is dispelled the heat, groups of fins can be gone out heat release by a large amount of heat radiator that have big heat-delivery surface, and then reach the purpose of no fan heat radiation.

Heat abstractor of the present utility model contacts heat radiation with groups of fins at cabinet inside by heat pipe, has avoided heat pipe and cabinet inside surface are carried out the step of good fit, makes that the assemble flow of whole computing machine is significantly simplified, and is suitable for producing in enormous quantities.

More existing no fan desktop computers also can be processed into aluminium extruded type to the cabinet outside surface, and with the increase heat-delivery surface, but the weight of cabinet and cost all can increase thereupon, and, dispel the heat by the cabinet surface, can cause the temperature on cabinet surface too high, the hidden danger that exists personnel to scald.Heat abstractor of the present utility model contacts heat radiation with groups of fins at cabinet inside by heat pipe, does not rely on the shape of cabinet outside surface, has reduced the processed complex degree and the cabinet cost of cabinet outside surface; In addition, groups of fins will far be lighter than the weight that complicated cabinet surface is brought, and it is lighter that whole computing machine can become, and is fit to the development trend of computing machine to miniaturization.Because the heat that cabinet inside produces is not to discharge by the cabinet surface, thus the temperature on cabinet surface can control lower, can not scald causing personnel.

Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.

The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all be included in the protection domain of the present utility model.

Claims

1. a heat abstractor is characterized in that, described heat abstractor is positioned at cabinet inside, and described heat abstractor comprises heat pipe, substrate and groups of fins;

Described substrate is connected by described heat pipe with described groups of fins, and described substrate is fixed on the heater members, and described groups of fins is positioned at the top of described heater members;

The base plate of described cabinet is provided with air intake vent, and the top board of described cabinet is provided with air outlet, and described air intake vent is all corresponding with described groups of fins with described air outlet, and described air intake vent and described air outlet form cross-ventilation described groups of fins is carried out heat interchange.

2. heat abstractor as claimed in claim 1 is characterized in that described heat pipe is between substrate and heater members.

3. heat abstractor as claimed in claim 2 is characterized in that described real estate has groove to the one side of heater members, and described heat pipe is embedded in the described groove, is fitted on the heater members towards the described thermotube wall of heater members.

4. heat abstractor as claimed in claim 1 is characterized in that described heat pipe penetrates described groups of fins.

5. heat abstractor as claimed in claim 1 is characterized in that, two side plates of described cabinet also offer the ventilating opening corresponding with described groups of fins respectively.

6. heat abstractor as claimed in claim 1 is characterized in that, described air intake vent comprises the inlet air hole of a plurality of spaces, and described air outlet comprises the air outlet opening of a plurality of spaces.

7. as each described heat abstractor of claim 1-6, it is characterized in that described substrate is the aluminium extruded type surface back to the one side of heater members.