WO2017092664A1

WO2017092664A1 - Heat sink, projector, and projector system

Info

Publication number: WO2017092664A1
Application number: PCT/CN2016/107921
Authority: WO
Inventors: 林伟; 谢涛; 李屹
Original assignee: 深圳市光峰光电技术有限公司
Priority date: 2015-11-30
Filing date: 2016-11-30
Publication date: 2017-06-08
Also published as: TW201719268A; TWI595305B; TW201734626A; CN106814525A

Abstract

A heat sink, projector, and projector system. The projector comprises a heat source group including a first heat source (101') to an Nth heat source (10n'), and N is an integer not less than 2. The projector further comprises a heat sink, and the heat sink comprises: a first liquid cooling plate (101) to an Nth liquid cooling plate (10n), a pump (200), and a heat exchanger (300). The first liquid cooling plate (101) to the Nth liquid cooling plate (10n) are disposed to be respectively in contact with the first heat source (101') to the Nth heat source (10n'). The pump (200) is connected between the first liquid cooling plate (101) to the Nth liquid cooling plate (10n) and the heat exchanger (300). The present invention uses the heat sink to perform cooling on the heat sources in the projector to prevent excessive amount of heat generated by the heat sources from accumulating due to poor heat dissipation, and the heat sink occupies little space.

Description

Heat sink, projector and projection system

Technical field

The present invention relates to a projector technology neighborhood, and more particularly to a heat sink, a projector, and a projection system.

Background technique

With the development of science and technology, projectors are becoming more and more widely used in life and work. A projector is a high-power device that converts electrical energy into light energy. Its composition includes a plurality of heat sources that generate a large amount of heat during operation, such as a light source module, a color wheel, and a processing chip.

technical problem

In order to achieve better dustproof effect, the structure of the projector is generally so tight that the heat generated by the heat source cannot be dissipated in time to cause heat to accumulate. Once the heat buildup is too high, it will seriously affect the performance and life of the optics and electronics inside the projector.

Technical solution

In view of the above, the present invention provides a heat dissipating device, a projector and a projection system, which heat-dissipate and heat the heat source in the projector through the heat dissipating device, thereby avoiding a situation in which a large amount of heat generated by the heat source cannot be dissipated by heat, and each liquid The water-cooled liquid in the cold plate is uniformly radiated through the heat exchanger to ensure the small volume of the heat sink.

To achieve the above object, the technical solution provided by the present invention is as follows:

A heat dissipating device is applied to a projector, comprising: a first liquid cooling plate to a Nth liquid cooling plate, a pump and a heat exchanger, wherein N is an integer not less than 2;

The first liquid cooling plate to the Nth liquid cooling plate are in communication with the heat exchanger, and the pump is connected to the first liquid cooling plate to the Nth liquid cooling plate and the heat exchanger between.

Preferably, the heat exchanger comprises:

a heat exchange plate, wherein the heat exchange plate is in communication with the first liquid cooling plate to the Nth liquid cooling plate;

And at least one heat dissipation fan fixed to the heat exchange plate.

Preferably, the water inlet of the pump is in communication with the water outlet of the heat exchanger;

The water outlet of the pump is in communication with the water inlet of the first liquid cooling plate to the Nth liquid cooling plate;

And the water outlets of the first liquid cooling plate to the Nth liquid cooling plate are all connected to the water inlet of the heat exchanger.

The water outlet of the pump is in communication with the water inlet of the first liquid cooling plate;

And the water outlet of the first liquid cooling plate of the first liquid cooling plate to the Nth liquid cooling plate is connected to the water inlet of the i+1th liquid cooling plate, and the water outlet of the Nth liquid cooling plate is The water inlets of the heat exchanger are connected, and i is a positive integer not greater than N.

Preferably, the water outlet of the pump is in communication with the water inlet of the heat exchanger;

The water inlet of the pump is in communication with the water outlet of the first liquid cooling plate;

And the water inlet of the ith liquid cooling plate of the first liquid cooling plate to the Nth liquid cooling plate is connected to the water outlet of the i+1th liquid cooling plate, and the water inlet of the Nth liquid cooling plate is The water outlets of the heat exchanger are connected, and i is a positive integer not greater than N.

Correspondingly, the present invention also provides a projector including a heat source group including a first heat source to an Nth heat source, N For an integer not less than 2, the projector further includes a heat sink, and the heat sink includes:

First liquid cold plate to Nth liquid cold plate, pump and heat exchanger,

Wherein, the first liquid cooling plate to the Nth liquid cooling plate are respectively disposed in contact with the first heat source to the Nth heat source, and the first liquid cooling plate to the Nth liquid cooling plate and the heat exchanger The intermediate phase is connected, and the pump is connected between the first liquid cooling plate to the Nth liquid cooling plate and the heat exchanger.

Preferably, the heat exchanger comprises:

And at least one heat dissipation fan fixed to the heat exchange plate.

Preferably, the heat source corresponding to the liquid-cooled plate adjacent to the water inlet of the heat exchanger generates heat greater than that generated by the remaining heat sources.

Accordingly, the present invention also provides a projection system including the projector described above.

Beneficial effect

Compared with the prior art, the technical solution provided by the present invention has at least the following advantages:

The invention provides a heat dissipating device, a projector and a projection system, comprising a heat source group, the heat source group comprising a first heat source to a Nth heat source, N The projector further includes a heat dissipating device, and the heat dissipating device includes: a first liquid cooling plate to a Nth liquid cooling plate, a pump, and a heat exchanger, wherein the first liquid cooling plate is The first liquid cooling plate is respectively disposed in contact with the first heat source to the Nth heat source, and the first liquid cooling plate to the Nth liquid cooling plate are in communication with the heat exchanger, and the pump is connected to The first liquid cooling plate to the Nth liquid cooling plate and the heat exchanger.

It can be seen from the above that during the operation of the heat sink, the water-cooled liquid flows from the heat exchanger into the liquid-cooled plate, and after the liquid-cooled plate absorbs the heat generated by the heat source in contact with it, the water-cooled liquid is returned to the heat exchanger for heat dissipation. The purpose of heat source heat dissipation. The technical solution provided by the invention cools and heats the heat source in the projector through the heat dissipating device, avoids the situation that a large amount of heat generated by the heat source cannot be dissipated by heat, and the water-cooled liquid in each liquid-cooled plate is uniformly passed through the heat exchanger. The heat dissipation ensures that the heat sink has a small footprint.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can obtain other drawings according to the provided drawings without any creative work.

1 is a schematic structural diagram of a heat dissipation device according to an embodiment of the present application;

2 is a schematic structural diagram of another heat dissipation device according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of still another heat dissipation device according to an embodiment of the present application; FIG.

FIG. 4 is a schematic structural diagram of a projector according to an embodiment of the present application.

BEST MODE FOR CARRYING OUT THE INVENTION

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As described in the background art, a projector is a high-power device that converts electrical energy into light energy, and its composition includes a plurality of heat sources that generate a large amount of heat during operation, such as a light source module, a color wheel, and a processing chip. . In order to achieve better dustproof effect, the structure of the projector is generally so tight that the heat generated by the heat source cannot be dissipated in time to cause heat to accumulate. Once the heat buildup is too high, it will seriously affect the performance and life of the optics and electronics inside the projector.

Based on this, the embodiment of the present application provides a heat dissipating device, a projector, and a projection system. The heat dissipating device heats and cools the heat source in the projector to avoid accumulation of a large amount of heat generated by the heat source, and each of them is accumulated. The water-cooled liquid in the liquid-cooled plate is uniformly radiated through the heat exchanger to ensure the small volume occupied by the heat-dissipating device. The technical solutions provided by the embodiments of the present application are as follows. The technical solutions provided by the embodiments of the present application are described in detail in conjunction with FIG. 1 to FIG.

Referring to FIG. 1 , a schematic structural diagram of a heat dissipation device according to an embodiment of the present disclosure, wherein the heat dissipation device is applied to a projector, including:

The first liquid cooling plate 101 to the Nth liquid cooling plate 10n, the pump 200, and the heat exchanger 300, N is an integer not less than 2;

The first liquid cooling plate 101 to the Nth liquid cooling plate 10n are in communication with the heat exchanger 300, and the pump 200 is connected to the first liquid cooling plate 101 to the Nth liquid cooling plate 10n and Between the heat exchangers 300.

Specifically, between the first liquid cooling plate to the different liquid cooling plates of the Nth liquid cooling plate, and between the liquid cooling plate and the heat exchanger are connected through the transmission pipe, and the pump is connected to the transmission pipe, the liquid is ensured The circulation of water-cooled liquid is achieved between the cold plate and the heat exchanger. It should be noted that, in the embodiment of the present application, the refrigerant flowing in the liquid cooling plate, the pump, and the heat exchanger in the heat dissipating device may be water, or may be liquid nitrogen, etc., which is not specifically limited in this embodiment; The embodiment of the present application does not specifically limit the materials of the liquid-cooled plate and the heat exchange plate and the transmission pipe of the heat exchanger, and needs to be specifically designed according to actual needs.

Referring to FIG. 1 , the heat exchanger provided by the embodiment of the present application may be an air-cooled heat exchanger, and the heat exchanger may include:

a heat exchange plate 301, wherein the heat exchange plate 301 is in communication with the first liquid cooling plate 101 to the Nth liquid cooling plate 10n;

And at least one heat dissipation fan 302 fixed to the heat exchange plate 301.

Wherein, the water-cooled liquid is returned to the heat exchange plate by the traction of the pump, and then the air volume generated by the rotation of the heat-dissipating fan and the heat exchange plate are forced to convect to take away the heat to cool the water-cooled liquid, and then flow again through the traction of the pump. The heat source is cooled in the liquid cooling plate.

It can be seen from the above that the liquid-cooled plate is placed in contact with the heat source, and during the operation of the heat-dissipating device, the pump draws the water-cooled liquid to start flowing, so that the water-cooled liquid flows from the heat exchanger into the liquid-cooled plate, and is absorbed by the liquid-cooled plate. After the heat generated by the heat source, the water-cooled liquid is returned to the heat exchanger for heat dissipation to achieve the purpose of dissipating heat to the heat source, and the water-cooled liquid in each liquid-cooled plate is uniformly radiated through the heat exchanger to ensure the occupied volume of the heat-dissipating device. small. In addition, the water-cooled liquid in each liquid-cooled plate is uniformly dissipated through the heat exchanger, and only a fan is required to be disposed in one heat exchanger, thereby avoiding excessive noise generation due to a large number of fans, and also reducing power. Consumption.

In the heat dissipating device provided by the embodiment of the present application, all the liquid cooling plates may be connected in parallel with each other and communicate with the heat exchanger, that is, as shown in FIG. 1 , the water inlet of the pump 200 and the heat exchanger 300 The outlet is connected;

The water outlet of the pump 200 is in communication with the water inlets of the first liquid cooling plate 101 to the Nth liquid cooling plate 10n;

And the water outlets of the first liquid cooling plate 101 to the Nth liquid cooling plate 10n are all in communication with the water inlet of the heat exchanger 300.

It should be noted that, when the liquid-cooling plates in the heat sink are connected in parallel with each other (ie, the connecting structure shown in FIG. 1), the traction direction of the pump can be compared with that of the pump shown in FIG. The traction direction shown by the pump in Figure 1 is reversed.

Wherein, the pump draws the water-cooled liquid from the heat exchanger to each liquid-cooled plate, absorbs the heat radiated by the corresponding heat source through the liquid-cooled plate, and then transmits it to the heat exchanger according to the traction direction of the pump, the heat exchanger pair The water-cooled liquid is cooled by heat dissipation, and then pulled again to the liquid-cooled plate to absorb heat, thus repeating the purpose of dissipating heat to the heat source.

In addition, in the heat dissipating device provided by the embodiment of the present application, all the liquid cooling plates may be connected to each other in series and in communication with the heat exchanger, that is, as shown in FIG. 2 , another heat dissipating device provided by the embodiment of the present application is provided. Schematic diagram of the structure, wherein the water inlet of the pump 200 is in communication with the water outlet of the heat exchanger 300;

The water outlet of the pump 200 is in communication with the water inlet of the first liquid cooling plate 101;

And the water outlet of the i-th liquid cooling plate of the first liquid cooling plate 101 to the Nth liquid cooling plate 10n is in communication with the water inlet of the i+1th liquid cooling plate, and the Nth liquid cooling plate 10n The water outlet is in communication with the water inlet of the heat exchanger 300, and i is a positive integer not greater than N.

Alternatively, the traction direction of the pump provided by the embodiment of the present application may be opposite to that of the pump provided in FIG. 2, that is, as shown in FIG. 3, which is provided by the embodiment of the present application. A schematic structural view of a heat dissipating device, wherein a water outlet of the pump 200 is in communication with a water inlet of the heat exchanger 300;

The water inlet of the pump 200 is in communication with the water outlet of the first liquid cooling plate 101;

And the water inlet of the i-th liquid cooling plate of the first liquid cooling plate 101 to the Nth liquid cooling plate 10n is in communication with the water outlet of the i+1th liquid cooling plate, and the Nth liquid cooling plate 10n The water inlet is in communication with the water outlet of the heat exchanger 300, and i is a positive integer not greater than N.

In the heat dissipating device provided in FIG. 2 and FIG. 3 of the embodiment of the present application, the water-cooled liquid in the heat exchanger passes through the pump to pass through each liquid-cooling plate, and absorbs the heat radiated by the heat source corresponding to each liquid-cooled plate. Finally, it flows into the heat exchanger for heat dissipation, and then is again drawn to each liquid-cooled plate to absorb heat one by one, thus repeating the purpose of dissipating heat to the heat source.

Correspondingly, the embodiment of the present application further provides a projector. Referring to FIG. 4, it is a schematic structural diagram of a projector according to an embodiment of the present application. A heat source is taken as an example, that is, N is 3.

Wherein the projector comprises a heat source group comprising a first heat source to an Nth heat source (ie, referring to the first heat source 101', the second heat source 102' and the third heat source 103' in FIG. 4), N For an integer not less than 2, the projector further includes a heat sink, and the heat sink includes:

The first liquid cooling plate 101 to the Nth liquid cooling plate 103, the pump 200, and the heat exchanger 300,

Wherein, the first liquid cooling plate to the Nth liquid cooling plate are respectively disposed in contact with the first heat source to the Nth heat source ' (ie, referring to the first liquid cooling plate 101 and the first heat source 101' in FIG. 4; The second liquid cooling plate 102 is disposed in contact with the second heat source 102', the third liquid cooling plate 103 and the third heat source 103' are disposed in contact with each other, and the first liquid cooling plate 101 to the Nth liquid cooling plate 103 are The heat exchangers 300 are in communication with each other, and the pump 200 is connected between the first liquid cooling plate 101 to the Nth liquid cooling plate 103 and the heat exchanger 300.

Referring to FIG. 4, in the projector provided by the embodiment of the present application, the heat exchanger may be an air-cooled heat exchanger, wherein the heat exchanger 300 includes:

a heat exchange plate 301, wherein the heat exchange plate 301 is in communication with the first liquid cooling plate 101 to the Nth liquid cooling plate 103;

And at least one heat dissipation fan 302 fixed to the heat exchange plate 301.

In the projector provided by the embodiment of the present application, all the liquid cooling plates of the heat dissipating device may be connected in parallel with each other and communicate with the heat exchanger, that is, the water inlet of the pump is connected to the water outlet of the heat exchanger. ;

It should be noted that when all the liquid-cooled plates in the heat sink are connected in parallel with each other, the pulling direction of the pump may be opposite to the pulling direction of the pump.

In addition, in the projector provided by the embodiment of the present application, all the liquid cooling plates of the heat dissipating device may be connected to each other in series and communicate with the heat exchanger, that is, the water inlet of the pump and the heat exchanger. The nozzles are connected;

Or the water outlet of the pump is in communication with the water inlet of the heat exchanger;

Further, when all the liquid-cooled plates are connected in series with each other, the heat source corresponding to the liquid-cooled plate near the water inlet of the heat exchanger generates more heat than the heat generated by the remaining heat sources. That is, the water-cooled liquid finally flows through the heat source that generates a large amount of heat, thereby avoiding the case where the water-cooled liquid absorbs enough heat when the heat source flows first, and the heat generated by the other heat sources cannot be absorbed again, thereby ensuring that the heat sink can be used for each heat source. Cooling down. Specifically, when the heat source group includes the light source module, the color wheel and the processing chip, the light source module with a larger heat quantity can be in contact with the liquid cooling plate near the water inlet of the heat exchanger, and the heat generation amount is smaller. The processing chip is placed in contact with the liquid cooling plate near the water outlet of the heat exchanger, and the color wheel is disposed between the two liquid cooling plates. The processing chip provided by the embodiment of the present application may be a DMD (Digital) Micromirror Device, digital micromirror device) chip.

Correspondingly, the embodiment of the present application further provides a projection system, which includes the projector provided by any of the above embodiments.

The embodiment of the present application provides a heat dissipating device, a projector, and a projection system, including a heat source group including a first heat source to an Nth heat source, N The projector further includes a heat dissipating device, and the heat dissipating device includes: a first liquid cooling plate to a Nth liquid cooling plate, a pump, and a heat exchanger, wherein the first liquid cooling plate is The first liquid cooling plate is respectively disposed in contact with the first heat source to the Nth heat source, and the first liquid cooling plate to the Nth liquid cooling plate are in communication with the heat exchanger, and the pump is connected to The first liquid cooling plate to the Nth liquid cooling plate and the heat exchanger.

It can be seen from the above that during the operation of the heat sink, the water-cooled liquid flows from the heat exchanger into the liquid-cooled plate, and after the liquid-cooled plate absorbs the heat generated by the heat source in contact with it, the water-cooled liquid is returned to the heat exchanger for heat dissipation. The purpose of heat source heat dissipation. The technical solution provided by the embodiment of the present application cools and heats the heat source in the projector through the heat dissipation device, so as to avoid the situation that a large amount of heat generated by the heat source cannot be dissipated by heat, and the water-cooled liquid in each liquid-cooled plate is uniformly exchanged through heat exchange. The heat is dissipated to ensure that the heat sink has a small footprint.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims

A heat dissipating device applied to a projector, comprising: a first liquid cooling plate to an Nth liquid cooling plate, a pump and a heat exchanger, wherein N is an integer not less than 2;

2. The heat sink according to claim 1, wherein the heat exchanger comprises:

And at least one heat dissipation fan fixed to the heat exchange plate.

3. The heat sink according to claim 1, wherein the water inlet of the pump is in communication with the water outlet of the heat exchanger;

The heat dissipating device according to claim 1, wherein the water inlet of the pump is in communication with the water outlet of the heat exchanger;

The heat dissipating device according to claim 1, wherein the water outlet of the pump is in communication with the water inlet of the heat exchanger;

6. A projector comprising a heat source group, the heat source group comprising a first heat source to a Nth heat source, N The integer is not less than 2, and the projector further includes a heat dissipating device, and the heat dissipating device includes:

First liquid cold plate to Nth liquid cold plate, pump and heat exchanger,

7. The projector of claim 6 wherein said heat exchanger comprises:

And at least one heat dissipation fan fixed to the heat exchange plate.

The projector according to claim 6, wherein the water inlet of the pump is in communication with the water outlet of the heat exchanger;

The projector according to claim 6, wherein a water outlet of the pump is in communication with a water inlet of the heat exchanger;

11. A projector according to claim 9 or 10, wherein the heat source corresponding to the liquid-cooled plate adjacent to the water inlet of the heat exchanger generates more heat than the heat generated by the remaining heat sources.

12. A projection system, characterized in that the projection system comprises the projector of any one of claims 6 to 11.