阅读说明：本技术 一种水冷散热系统以及投影机 (Water-cooling heat dissipation system and projector ) 是由 邢哲 于 2017-09-19 设计创作，主要内容包括：本发明涉及激光投影技术领域,公开一种水冷散热系统以及投影机,水箱包括箱体,箱体上设置有进液口和出液口,还包括用于减少冷却液内气泡的消泡层,消泡层设置在箱体内部,进液口和出液口分别设置在消泡层的两侧,消泡层的至少一部分与冷却液形成的液面有交叉,回流的冷却液需要经过消泡层才能到达出液口,故消泡层能够减缓冷却液在水箱内的冲击作用,进而减少冷却液中由于水流的冲击力而产成的气泡；冷却液在经过水箱时,冷却液从进液口流向出液口的过程中需要经过消泡层,由于消泡层能够减少气泡,故冷却液中的气泡经过消泡层的作用而大大减少,进而从出液口排出的冷却液中的气泡较少,从而能够减少气蚀现象的发生。(The invention relates to the technical field of laser projection, and discloses a water-cooling heat dissipation system and a projector.A water tank comprises a tank body, wherein a liquid inlet and a liquid outlet are arranged on the tank body, the water tank also comprises a defoaming layer for reducing bubbles in cooling liquid, the defoaming layer is arranged in the tank body, the liquid inlet and the liquid outlet are respectively arranged at two sides of the defoaming layer, at least one part of the defoaming layer is crossed with the liquid level formed by the cooling liquid, and the reflowing cooling liquid can reach the liquid outlet through the defoaming layer, so that the defoaming layer can slow down the impact action of the cooling liquid in the water tank, and further bubbles generated in the cooling liquid due to the impact force of water flow are reduced; when the coolant liquid is through the water tank, the in-process that the coolant liquid flowed to the liquid outlet from the inlet need pass through the defoaming layer, because the defoaming layer can reduce the bubble, the bubble in the event coolant liquid greatly reduced through the effect on defoaming layer, and then less from the bubble in the liquid outlet exhaust coolant liquid to can reduce the emergence of cavitation phenomenon.)

1. A water-cooling heat dissipation system comprises a heat exchanger, a circulating pump and a heat absorption device, and is characterized by also comprising a water tank for storing cooling liquid, wherein the water tank, the heat exchanger, the circulating pump and the heat absorption device are connected through water pipes to form a circulating system;

the water tank comprises a tank body, wherein a liquid inlet and a liquid outlet are formed in the tank body, the defoaming layer is used for reducing bubbles in the cooling liquid, the defoaming layer is arranged inside the tank body, the liquid inlet and the liquid outlet are respectively arranged on two sides of the defoaming layer, and at least one part of the defoaming layer is crossed with the liquid level formed by the cooling liquid.

2. The water-cooled heat dissipation system as recited in claim 1, wherein the defoaming layer is horizontally disposed along a bottom parallel to the tank body, and the liquid inlet is disposed above the defoaming layer.

3. The water-cooled heat dissipation system as recited in claim 2, wherein the projection of the defoaming layer on the bottom of the tank covers the bottom of the tank.

4. The water-cooled heat dissipation system as recited in claim 1, wherein the defoaming layer is provided with a microporous structure.

5. The water-cooled heat dissipation system of claim 4, wherein the defoaming layer is made of an open-cell foam material.

6. The water-cooled heat dissipation system as recited in claim 5, wherein the open-cell foam material is metal.

7. The water-cooled heat dissipation system as recited in claim 6, wherein the defoaming layer is fixedly disposed on an inner wall of the case.

8. The water-cooled heat dissipation system of claim 4, wherein the defoaming layer is foam.

9. The water-cooled heat dissipation system of claim 2, wherein the defoaming layer is a fabric.

10. A projector comprising the water-cooled heat dissipation system as recited in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of laser projection, in particular to a water tank, a water-cooling heat dissipation system and a projector.

Background

The liquid cooling heat radiation system firstly absorbs heat by liquid and then transmits the heat to the radiator, and then radiates the heat from the radiator by an air cooling or passive heat radiation mode, wherein the water cooling heat radiation system is widely applied to high-end projectors by the advantages of good heat absorption and heat conduction performance, large total heat radiation area, easy material taking, no pollution and the like.

As shown in fig. 1 and 2, the water-cooled heat dissipation system of the projector includes a water pump 03, a heat exchanger 01, a liquid storage tank 04, a coolant, a heat sink 02, a pipeline 05, and the like. Wherein, the heat absorbing device 02 is a closed cavity formed by the bulb rack of the projector, the cooling water flows through the whole closed cavity under the push of the water pump 03, takes away most heat and enters the heat exchanger 01, the heat is discharged outside the machine through the heat exchanger 01, and the temperature of the cooling water is reduced and then returns to the water storage tank. Because coolant liquid is reserved in each part of the whole system, the pipeline interface and the liquid storage tank 04, absolute air tightness cannot be achieved, small gaps possibly exist at the connecting interface to allow air circulation, and small-molecule coolant liquid can slowly diffuse and volatilize into the air through parts such as water pipes and connectors, so that the coolant liquid in a cold system can be reduced along with the application of a liquid cooling heat dissipation system, the air in a water tank and the system can be gradually increased, and larger bubbles are accumulated. Meanwhile, in order to improve the cooling effect, the cooling liquid needs to flow in a circulating mode in the system, the cooling liquid in the system evaporates or volatilizes to cause the liquid level of the water tank to be reduced, a large amount of bubbles are generated after the backflow liquid impacts the liquid level of the water tank, the bubbles are difficult to dissolve in the cooling liquid at one time, and the cooling liquid in the water tank is quickly pumped away to perform cooling circulation.

Air bubbles contained in the cooling liquid can cause failure to occur: 1. when the bubbles collapse, liquid particles collide with each other and also collide with the metal surface, noise with various frequencies is generated, and when the noise is serious, the explosion sound of 'crack' in the pump can be heard, and meanwhile, the unit vibrates; 2. cavitation occurs and the performance of the pump is reduced. Cavitation is the phenomenon of cavitation corrosion damage on the metal surface contacted with fluid under the conditions of high-speed flow and pressure change of the fluid. A large amount of bubbles are generated in the liquid cooling system to block a flow channel, so that the continuous flow of liquid in the pump is damaged, and the flow, the lift and the efficiency of the pump are obviously reduced; 3. the overflowing part is damaged, because of the action of mechanical ablation, the part damaged by cavitation is mostly near the outlet of the impeller, and the surface of the impeller presents the marks of sponge, groove, honeycomb, fish scale and the like; in severe cases, the blades or the front and rear cover plates may be perforated, and even the impeller of the circulation pump may be damaged.

Disclosure of Invention

The invention provides a water tank, a water-cooling heat dissipation system and a projector, wherein the water tank can reduce bubbles in cooling liquid, so that cavitation is reduced, and the water-cooling heat dissipation system with the water tank and the projector have the advantages of good product performance and long service life.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a water tank for save coolant liquid, includes the box, be provided with inlet and liquid outlet on the box, still including being used for reducing the defoaming layer of bubble in the coolant liquid, the defoaming layer sets up inside the box, inlet and liquid outlet set up respectively the both sides on defoaming layer, at least partly on defoaming layer with the liquid level that the coolant liquid formed has alternately.

In the water tank, the defoaming layer is arranged in the water tank, and the returned cooling liquid enters the water tank and can reach the liquid outlet only through the defoaming layer, so that the defoaming layer can slow down the impact of the cooling liquid in the water tank, and further reduce bubbles generated by the impact of water flow in the cooling liquid; because inlet and liquid outlet set up respectively in the both sides of defoaming layer, the coolant liquid is when the water tank, and the in-process that the coolant liquid flowed to the liquid outlet from the inlet need be through the defoaming layer, because the defoaming layer can reduce the bubble, so bubble in the coolant liquid through the effect on defoaming layer and significantly reduce, and then less from the bubble in the liquid outlet exhaust coolant liquid to can reduce the emergence of cavitation phenomenon.

Preferably, the defoaming layer is horizontally arranged along the bottom parallel to the box body, and the liquid inlet is arranged above the defoaming layer.

Further, the projection of the defoaming layer on the bottom of the box body covers the bottom of the box body.

Preferably, a micropore structure is arranged in the defoaming layer.

Further, the defoaming layer is made of an open-cell foaming material.

Further, the open-cell foam material is metal.

Furthermore, the defoaming layer is fixedly arranged on the inner wall of the box body.

Further, the defoaming layer is foam.

Further, the defoaming layer is a fabric.

In addition, the invention also provides a water-cooling heat dissipation system which comprises a heat exchanger, a circulating pump, a heat absorption device and the water tank in any one of the technical schemes, wherein the water tank, the heat exchanger, the circulating pump and the heat absorption device are connected through water pipes to form a circulating system.

In above-mentioned water-cooling system, the water tank, the heat exchanger, it forms circulation system to link to each other through the water pipe between circulating pump and the heat sink, under the effect of circulating pump, most heat is taken away when the cooling water flows through the heat sink and is entered into the heat exchanger, and outside the heat exchanger discharger, after the cooling liquid temperature reduces, get back to in the water tank again, when the cooling liquid flows through the water tank, because the bubble in the cooling liquid greatly reduced through the effect on the defoaming layer in the water tank, and then bubble in the cooling liquid from the liquid outlet discharge is less, this bubble in the cooling water that enters into in the circulation system is less, the production of vibration and noise has been reduced, the cavitation to each part in the circulation system has been reduced simultaneously, the influence on the circulating pump performance has been avoided, the life of each part in the circulation system.

Preferably, the water tank is located between the heat exchanger and the heat sink.

In addition, the invention also provides a projector which comprises the water-cooling heat dissipation system according to any one of the technical schemes.

In the projector, the water-cooling heat dissipation system reduces the generation of vibration and noise, reduces the cavitation erosion of all parts in the circulating system, avoids influencing the performance of the circulating pump, and ensures the service life of all parts in the circulating system, so that the projector with the water-cooling heat dissipation system has good product performance and long service life.

Drawings

Fig. 1 is a schematic structural diagram of a water-cooling heat dissipation system according to the background art of the present invention;

fig. 2 is a schematic view illustrating a flowing direction of a cooling liquid in a water-cooling heat dissipation system according to the background art of the present invention;

FIG. 3 is a schematic structural view of a water tank according to the present invention;

fig. 4 is a schematic structural diagram of a water-cooling heat dissipation system provided in the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 3, a water tank 1 for storing cooling liquid 15 includes a tank 11, the tank 11 is provided with a liquid inlet 12 and a liquid outlet 13, and further includes a defoaming layer 14 for reducing bubbles 16 in the cooling liquid 15, the defoaming layer 14 is disposed inside the tank 11, the liquid inlet 12 and the liquid outlet 13 are respectively disposed on two sides of the defoaming layer 14, and at least a part of the defoaming layer 14 intersects with a liquid level formed by the cooling liquid 15.

In the water tank 1, as the defoaming layer 14 is arranged in the water tank 1, the backflow cooling liquid 15 enters the water tank 1 and can reach the liquid outlet 13 only through the defoaming layer 14, the defoaming layer 14 can relieve the impact of the cooling liquid 15 in the water tank 1, and further reduce bubbles 16 generated by the impact of water flow in the cooling liquid 15; because inlet 12 and liquid outlet 13 set up respectively in the both sides of defoaming layer 14, coolant liquid 15 is when through water tank 1, and coolant liquid 15 need pass through defoaming layer 14 from inlet 12 flow direction liquid outlet 13's in-process, because defoaming layer 14 can reduce bubble 16, so bubble 16 in the coolant liquid 15 passes through the effect of defoaming layer 14 and significantly reduces, and then 16 bubbles in the coolant liquid 15 of following the liquid outlet 13 exhaust are less to can reduce the emergence of cavitation phenomenon.

In addition to the above-mentioned water tank 1, in order to facilitate the arrangement of the defoaming layer 14, as shown in fig. 3, in a preferred embodiment, the defoaming layer 14 is horizontally arranged along the bottom parallel to the tank body 11, and the liquid inlet 12 is arranged above the defoaming layer 14.

In the above water tank 1, when the cooling liquid 15 passes through the water tank 1, the cooling liquid 15 enters the inside of the tank body 11 from the liquid inlet 12, the cooling liquid 15 moves downward from the upper side of the defoaming layer 14, the impact of the cooling liquid 15 in the water tank 1 is relieved through the defoaming layer 14, and then bubbles 16 generated in the cooling liquid 15 due to the impact force of water flow are reduced, and the bubbles 16 can be reduced due to the defoaming layer 14, so that the bubbles 16 in the cooling liquid 15 are greatly reduced through the effect of the defoaming layer 14, and then the bubbles 16 in the cooling liquid 15 discharged from the liquid outlet 13 are fewer, thereby reducing the occurrence of cavitation.

The defoaming layer 14 can be horizontally arranged at any position in the height direction of the box body 11 in parallel to the bottom of the box body 11, optionally, the defoaming layer 14 is arranged at the middle position in the height direction of the box body 11, the top of the box body 11, and the liquid outlet 13 is arranged at the bottom of the box body 11; the defoaming layer 14 is also arranged at any position of the tank body 11 in the length direction or the width direction, and at the moment, in order to realize the function of the water tank 1, the positions of the liquid inlet 12 and the liquid outlet 13 are correspondingly adjusted; in addition, the positions of the defoaming layer 14, the liquid inlet 12 and the liquid outlet 13 are set according to the specific practical conditions of the water tank 1.

On the basis of the water tank 1, in order to further reduce the bubbles 16 in the cooling liquid 15 discharged from the liquid outlet 13 of the water tank 1, specifically, as shown in fig. 3, the projection of the defoaming layer 14 on the bottom of the tank 11 may cover the bottom of the tank 11.

In the water tank 1, when the cooling liquid 15 impacts the defoaming layer 14 as the projected area of the defoaming layer 14 on the bottom of the tank 11 increases, the more the defoaming layer 14 can buffer the impact force of the water flow, and the more the bubbles 16 formed by the impact force of the water flow can be reduced; meanwhile, the cooling liquid 15 needs to pass through the defoaming layer 14 in the process of flowing from the liquid inlet 12 to the liquid outlet 13, bubbles 16 in the cooling liquid 15 can be greatly reduced under the action of the defoaming layer 14, and then the bubbles 16 in the cooling liquid 15 discharged from the liquid outlet 13 are fewer, so that the occurrence of cavitation can be reduced.

In addition, the projected area of the defoaming layer 14 on the bottom of the tank 11 can be one third, one half or two thirds of the area of the bottom of the tank 11, and the projected area of the defoaming layer 14 on the bottom of the tank 11 can be selected according to the specific practical situation of the water tank 1.

In a preferred embodiment, the defoaming layer 14 is provided with a microporous structure.

In the above water tank 1, the microporous structure forms many gas-liquid exchange channels, and when the cooling liquid 15 passes through the microporous structure, the bubbles 16 are broken, so that the bubbles 16 dissolved in the cooling liquid 15 are reduced, and therefore, the bubbles 16 in the cooling liquid 15 passing through the defoaming layer 14 are greatly reduced, so that the bubbles 16 in the cooling liquid 15 are greatly reduced under the action of the defoaming layer 14, and further, the bubbles 16 in the cooling liquid 15 discharged from the liquid outlet 13 are fewer, thereby reducing the occurrence of cavitation.

In addition, the defoaming layer 14 may be provided with a microporous structure, and may also be provided with other structures capable of reducing the bubbles 16, and the structural form inside the defoaming layer 14 may be selected according to the specific practical situation of the water tank 1.

In a preferred embodiment, the defoaming layer 14 may be made of an open cell foam material.

In above-mentioned water tank 1, intercommunication each other between trompil expanded material cell and the cell, or complete intercommunication, gas or liquid can both be passed through to one-dimensional or three-dimensional, and the defoaming layer 14 inside of trompil expanded material preparation is formed with the cellular structure, and the cellular structure can form many gas-liquid exchange's passageway for 16 bubbles in the coolant liquid 15 through the effect on defoaming layer 14 and significantly reduce, and then 16 bubbles in the coolant liquid 15 of following the liquid outlet 13 exhaust are less, thereby can reduce the emergence of cavitation phenomenon.

Specifically, the open-cell foam material is a metal.

In the water tank 1, the defoaming layer 14 may be made of an open-cell foam material, wherein the open-cell foam material may be made of a metal such as copper, aluminum, or the like, or may be made of other materials capable of forming internal pores.

Specifically, the defoaming layer 14 may be fixedly disposed on the inner wall of the case 11.

In the above water tank 1, it may be fixedly disposed on the inner wall of the tank body 11, and a step is disposed on the inner wall of the tank body 11 for placing the defoaming layer 14 made of metal or having a large thickness.

In particular, the defoaming layer 14 may be foam.

In the above water tank 1, the defoaming layer 14 may include foam, and may further include sponge, wherein the foam or the sponge may be made of materials such as PU (polyurethane), EVA (ethylene vinyl acetate copolymer), etc., and a microporous structure is formed inside the foam or the sponge, and the microporous structure may form a plurality of gas-liquid exchange channels, so that bubbles 16 in the cooling liquid 15 are greatly reduced under the action of the defoaming layer 14, and further, the bubbles 16 in the cooling liquid 15 discharged from the liquid outlet 13 are less, thereby reducing the occurrence of cavitation. In addition, the defoaming layer 14 may also include other foam-like or sponge-like structures.

In particular, the defoaming layer 14 may be a fabric.

In the above water tank 1, the defoaming layer 14 may include a fabric, and the fabric may be suspended on the surface of the liquid formed by the cooling liquid 15, and since the cotton fibers in the fabric may transmit and adsorb the liquid by capillary effect, air may not be transmitted microscopically while adsorbing the liquid. The fabric can be made of materials such as PU (polyurethane), PA (polyamide), PP (polypropylene), PET (polyethylene terephthalate) and the like, the inside of the fabric greatly reduces bubbles 16 in the cooling liquid 15 under the action of the defoaming layer 14 through the capillary effect, and then the bubbles 16 in the cooling liquid 15 discharged from the liquid outlet 13 are less, so that the occurrence of cavitation can be reduced. In addition, the defoaming layer 14 may also include other fabric-like structures.

In addition, as shown in fig. 4, the present invention further provides a water-cooling heat dissipation system, which includes a heat exchanger 2, a circulation pump 4, a heat sink 3, and a water tank 1 according to any one of the above technical solutions, wherein the water tank 1, the heat exchanger 2, the circulation pump 4, and the heat sink 3 are connected through a water pipe 5 to form a circulation system.

In the water-cooling heat dissipation system, as the water tank 1, the heat exchanger 2, the circulating pump 4 and the heat absorbing device 3 are connected through the water pipe 5 to form a circulating system, under the action of the circulating pump 4, when cooling water flows through the heat absorption device 3, most of heat is carried away to enter the heat exchanger 2 and is discharged out of the machine through the heat exchanger 2, after the temperature of the cooling liquid 15 is reduced, the cooling liquid returns to the water tank 1, when the cooling liquid 15 flows through the water tank 1, since the bubbles 16 in the cooling liquid 15 are greatly reduced by the action of the defoaming layer 14 in the water tank 1, and thus less bubbles 16 are contained in the coolant 15 discharged from the liquid outlet 13, and less bubbles 16 are contained in the coolant entering the circulation system, reducing the generation of vibration and noise, meanwhile, the cavitation erosion of all parts in the circulating system is reduced, the performance of the circulating pump 4 is prevented from being influenced, and the service life of all parts in the circulating system is ensured.

In a preferred embodiment, the water tank 1 is located between the heat exchanger 2 and the heat sink 3.

In the water-cooling heat dissipation system, a circulating system can be formed according to a circulating pump 4-a heat absorption device 3-a heat exchanger 2 or a circulating pump 4-a heat exchanger 2-a heat absorption device 3, a water tank 1 is positioned between any two components of the heat absorption device 3, the heat exchanger 2 and the circulating pump 4, and the water tank 1, the heat exchanger 2, the heat absorption device 3 and the circulating pump 4 are connected by pipelines.

In addition, the invention also provides a projector which comprises the water-cooling heat dissipation system in any one of the technical schemes.

In the projector, the water-cooling heat dissipation system reduces the generation of vibration and noise, reduces the cavitation erosion of all parts in the circulating system, avoids influencing the performance of the circulating pump 4, and ensures the service life of all parts in the circulating system, so that the projector with the water-cooling heat dissipation system has good product performance and long service life.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.