CN117490303A

CN117490303A - Water cooling plate

Info

Publication number: CN117490303A
Application number: CN202311591986.XA
Authority: CN
Inventors: 王盛
Original assignee: Guangdong Yingweike Technology Co ltd
Current assignee: Guangdong Yingweike Technology Co ltd
Priority date: 2023-11-24
Filing date: 2023-11-24
Publication date: 2024-02-02

Abstract

The invention provides a water cooling plate, which relates to the technical field of heat dissipation, and comprises a cooling plate main body and a jet plate, wherein one side of a first bulge is provided with a plurality of liquid inlets, and the other side of the first bulge is provided with a plurality of liquid outlets; the liquid outlet and the liquid inlet enable the upper cooling cavity to be communicated with the lower cooling cavity. According to the water cooling plate, the first protrusions are arranged on one end face of the jet flow plate, the second protrusions are arranged on the other end face of the jet flow plate, the second protrusions are located between the two first protrusions, fluid in the upper cooling cavity enters the lower cooling cavity from the liquid inlet, fluid in the lower cooling cavity enters the upper cooling cavity from the liquid outlet, the first protrusions and the second protrusions are matched to enable the fluid to flow back and forth between the upper cooling cavity and the lower cooling cavity, so that interference of backflow on jet flow can be avoided, and the heat exchange effect is guaranteed.

Description

Water cooling plate

Technical Field

The invention relates to the technical field of heat dissipation, in particular to a water cooling plate.

Background

The basic principle of jet impact heat exchange is that fluid is sprayed to a cooled surface vertically or at a certain inclination angle through a circular or narrow slit nozzle under the action of pressure difference, so that a strong heat exchange effect is generated in a region directly impacted.

In the prior art, when jet impact heat dissipation, jet is sprayed onto a cooled surface, fluid and the cooled surface reflect and form backflow, if the backflow and the jet expand, contact between the jet and the cooled surface is affected, namely, the backflow can interfere the jet, and the jet heat exchange effect is affected.

Disclosure of Invention

The invention aims to provide a water cooling plate to relieve the technical problem that the backflow produces interference on jet flow so as to influence the jet flow heat exchange effect.

The invention provides a water cooling plate, which comprises a cooling plate main body and a jet flow plate, wherein a cooling cavity is arranged in the cooling plate main body;

at least two first bulges are arranged on one end face of the jet flow plate, at least one second bulge is arranged on the end face, far away from the first bulges, of the jet flow plate, and the second bulge is positioned between two adjacent first bulges;

at least one first bulge is arranged on one end face of the jet flow plate, a plurality of liquid inlets are formed in one side of the first bulge, and a plurality of liquid outlets are formed in the other side of the first bulge;

a plurality of liquid inlets are formed in one side of the first bulge, and a plurality of liquid outlets are formed in the other side of the first bulge;

and the liquid outlet and the liquid inlet penetrate through the jet plate, and the liquid outlet and the liquid inlet enable the upper cooling cavity and the lower cooling cavity to be communicated.

In an alternative embodiment, the first protrusion divides the upper cooling cavity into a plurality of upper exchange cavities arranged in sequence along the first direction; the second bulge divides the lower cooling cavity into a plurality of lower exchange cavities;

the liquid inlet and the liquid outlet adjacent to the same first bulge are communicated with the same lower exchange cavity;

the first direction is the length direction of the jet plate.

In an alternative embodiment, the cooling plate main body is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the upper exchange cavity only provided with a liquid inlet, and the liquid outlet is communicated with the upper exchange cavity only provided with a liquid outlet;

the direction from the liquid inlet hole to the liquid outlet hole is the same as the first direction.

In an alternative embodiment, each liquid inlet is provided with two liquid outlets, and the liquid inlets are located between two adjacent liquid outlets.

In an alternative embodiment, a plurality of groups of first diversion components are arranged on the end surface of the jet plate, which is far away from the first bulge; the plurality of groups of first diversion assemblies are sequentially arranged along the first direction;

each group of the first flow guiding components comprises a plurality of first flow guiding components arranged along the length direction of the first bulge;

each first flow guide assembly is arranged corresponding to one liquid inlet, each first flow guide assembly comprises two first flow guide plates, the two first flow guide plates are arranged on two sides of the liquid inlet, and the two first flow guide plates are located between two liquid outlets corresponding to the liquid inlet.

In an alternative embodiment, the cooling plate body includes a lower cover plate and the upper cover plate, the upper cover plate being disposed on the lower cover plate; the liquid inlet hole and the liquid outlet hole are arranged on the upper cover plate;

the end face of the jet plate with the first bulge faces the upper cover plate, and the end face of the jet plate with the second bulge faces the lower cover plate.

In an alternative embodiment, the end face of the lower cover plate facing the jet plate is provided with second diversion components which are in one-to-one correspondence with the first diversion components;

the second flow guide assembly comprises two second flow guide plates, and the two first flow guide plates are arranged between the two second flow guide plates; the liquid outlet is positioned between the first guide plate and the second guide plate; the two first guide plates and the two second guide plates form a heat exchange channel for liquid to flow from the liquid inlet to the liquid outlet.

In an alternative embodiment, a plurality of metal powder layers are arranged on the lower cover plate, and the metal powder layers are arranged between two second guide plates.

In alternative embodiments, the metal powder layer is formed using high temperature sintering or spraying.

In an alternative embodiment, both ends of the jet plate in the first direction are provided with notches;

the upper cover plate is provided with a positioning protrusion matched with the notch, and the positioning protrusion is matched with the notch to accurately install the upper cover plate and the jet flow plate.

In an alternative embodiment, the water cooling plate is made of copper or aluminum.

In an alternative embodiment, the plurality of liquid inlets and the plurality of liquid outlets taper in the first direction.

According to the water cooling plate, the first protrusions are arranged on one end face of the jet flow plate, the second protrusions are arranged on the other end face of the jet flow plate, the second protrusions are located between the two first protrusions, fluid in the upper cooling cavity enters the lower cooling cavity from the liquid inlet, fluid in the lower cooling cavity enters the upper cooling cavity from the liquid outlet, the first protrusions and the second protrusions are matched to enable the fluid to flow back and forth between the upper cooling cavity and the lower cooling cavity, so that interference of backflow on jet flow can be avoided, and the heat exchange effect is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a water cooling plate according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cross-sectional A-A structure of the water-cooled plate shown in FIG. 1;

FIG. 3 is a schematic view of a cross-sectional B-B structure of the water-cooled plate shown in FIG. 1;

FIG. 4 is an enlarged view of part of section C of the schematic view of section B-B of the water-cooled plate shown in FIG. 3;

FIG. 5 is a schematic view of the jet plate of the water-cooled plate shown in FIG. 1;

FIG. 6 is a schematic view of another angle of the jet plate of the water-cooled plate shown in FIG. 5;

FIG. 7 is a schematic view of the upper cover plate of the water-cooled plate shown in FIG. 1;

fig. 8 is a schematic view of the structure of the lower cover plate of the water cooling plate shown in fig. 1.

Icon: 100-jet plate; 200-liquid inlet; 300-first protrusions; 400-liquid outlet; 500-notch; 600-positioning protrusions; 700-liquid inlet holes; 800-liquid discharge holes; 900-upper cover plate; 110-a lower cover plate; 120-upper exchange chamber; 130-a second bump; 140-lower exchange chamber; 150-a first deflector; 160-a second baffle; 170-metal powder layer.

Detailed Description

The terms "first," "second," "third," and the like are used merely for distinguishing between descriptions and not for indicating a sequence number, nor are they to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "left", "right", "upper", "lower", etc. are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use for the product of the application, are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 to 8, the present invention provides a water cooling plate including a cooling plate body in which a cooling cavity is provided and a jet plate 100 (100), the jet plate 100 (100) being disposed in the cooling cavity and dividing the cooling cavity into an upper cooling cavity and a lower cooling cavity;

at least two first protrusions 300 are disposed on one end surface of the fluidic plate 100, at least one second protrusion 130 is disposed on an end surface of the fluidic plate 100 away from the first protrusions 300, and the second protrusions 130 are located between two adjacent first protrusions 300;

at least one first protrusion 300 is disposed on one end surface of the jet plate 100, a plurality of liquid inlets 200 are disposed on one side of the first protrusion 300, and a plurality of liquid outlets 400 are disposed on the other side of the first protrusion 300;

a plurality of liquid inlets 200 (200) are formed on one side of the first protrusion 300 (300), and a plurality of liquid outlets 400 (400) are formed on the other side of the first protrusion 300 (300);

and the liquid outlet 400 and the liquid inlet 200 penetrate through the jet plate 100, and the liquid outlet 400 and the liquid inlet 200 enable the upper cooling cavity and the lower cooling cavity to be communicated.

In some embodiments, the fluidic plate 100 divides the cooling cavity into an upper cooling cavity and a lower cooling cavity, and the liquid inlet 200 and the liquid outlet 400 on the fluidic plate 100 communicate the upper cooling cavity and the lower cooling cavity.

The fluid in the upper cooling cavity enters the lower cooling cavity from the liquid inlet 200, the fluid entering the lower cooling cavity cannot continue to flow due to the blocking of the second protrusion 130, the fluid enters the upper cooling cavity from the liquid outlet 400, the fluid continues to flow for a certain distance in the upper cooling cavity, the fluid is blocked by the first protrusion 300, and enters the lower cooling cavity again from the liquid inlet 200, namely, the fluid flows back and forth in the upper cooling cavity and the lower cooling cavity, so that the fluid can be sufficiently cooled down, the interference of backflow on jet flow is avoided, and the cooling effect of the water cooling plate is ensured.

In an alternative embodiment, the first protrusion 300 divides the upper cooling chamber into a plurality of upper exchange chambers 120 arranged in sequence along the first direction; the second protrusion 130 divides the lower cooling chamber into a plurality of lower exchange chambers 140; the liquid inlet 200 and the liquid outlet 400 adjacent to the same first protrusion are both communicated with the same lower exchange cavity 140; the first direction is a length direction of the jet plate 100.

In some embodiments, fluid, typically water, can enter the cooling plate body from the inlet holes 700 and exit the drain holes 800.

The first protrusion 300 divides the upper cooling chamber into a plurality of upper exchange chambers 120, and the second protrusion 130 divides the lower cooling chamber into a plurality of lower cooling chambers; the same lower exchange chamber 140 is communicated with two adjacent upper exchange chambers 120, fluid in the upper exchange chambers 120 enters the lower exchange chamber 140 through the liquid inlet 200, and fluid in the lower exchange chamber 140 enters the adjacent upper exchange chambers 120 through the liquid outlet 400.

That is, fluid enters the upper exchange chamber 120 from the inlet port 700, then enters the lower exchange chamber 140 from the inlet port 200, enters the other lower exchange chamber 140 from the outlet port 400, then enters the upper exchange chamber 120 and the upper exchange chamber 120 of the lower exchange chamber 140 … in sequence, and then is discharged from the drain hole 800.

Because the upper exchange cavities 120 are not directly communicated, the lower exchange cavities 140 are not directly communicated, interference between jet flow entering the lower exchange cavities 140 and backflow of the lower exchange cavities 140 can be effectively avoided, and the heat exchange effect is improved; the same also avoids interference between the jet flow in the upper exchange chamber 120 and the return flow of the upper exchange chamber 120.

Referring to fig. 5, in an alternative embodiment, each of the liquid inlets 200 is provided with two liquid outlets 400, and the liquid inlet 200 is located between two adjacent liquid outlets 400.

For example, in order to improve the heat exchange effect of the lower exchange chamber 140, after the fluid enters the lower exchange chamber 140 from the liquid inlet 200, the fluid is prevented from directly flowing out of the liquid outlet 400, so that the fluid performs certain heat exchange in the lower exchange chamber 140, the liquid inlet 200 and the liquid outlet 400 are arranged in a staggered manner, and generally one liquid inlet 200 corresponds to two liquid outlets 400, namely, after the fluid entering from the liquid inlet 200 enters the lower exchange chamber 140, the fluid needs a longer path to enter the liquid outlet 400, so that the heat exchange effect is effectively improved; the fluid entering from the liquid inlet 200 is jet flow, the jet flow flows towards the cover plate 110, and the jet flow is reflected by the lower cover plate 110 to form backflow to flow towards the liquid outlet 400, so that the interference of the backflow to the jet flow is reduced, and one liquid inlet 200 corresponds to two liquid outlets 400, namely, one jet flow forms two backflow flows, the strength of the backflow is reduced, and the interference of the backflow to the jet flow is reduced.

Referring to fig. 6, in an alternative embodiment, a plurality of sets of first flow guiding components are disposed on an end surface of the fluidic plate 100 away from the first protrusion 300; the plurality of groups of first diversion assemblies are sequentially arranged along the first direction;

each group of the first diversion assemblies comprises a plurality of first diversion assemblies arranged along the length direction of the first protrusion 300;

each first flow guiding assembly is disposed corresponding to one liquid inlet 200, each first flow guiding assembly includes two first flow guiding plates 150, two first flow guiding plates 150 are disposed on two sides of the liquid inlet 200, and two first flow guiding plates 150 are disposed between two liquid outlets 400 corresponding to the liquid inlet 200.

Referring to fig. 1, 7 and 8, in an alternative embodiment, the cooling plate body includes a lower cover plate 110 and the upper cover plate 900, the upper cover plate 900 being disposed on the lower cover plate 110; the liquid inlet 700 and the liquid outlet 800 are arranged on the upper cover plate 900;

the end surface of the jet plate 100 having the first protrusion 300 faces the upper cover plate 900, and the end surface of the jet plate 100 having the second protrusion 130 faces the lower cover plate 110.

The liquid inlet 200 and the liquid outlet 400 on two sides of the first protrusion 300 correspond to the first diversion component; two first guide plates 150 are arranged on two sides of each liquid inlet 200; the first baffle 150 allows the fluid entering from the inlet 200 to flow toward the lower cover plate 110, so that the fluid exchanges heat with the lower cover plate 110 effectively.

In order to enable the fluid to flow toward the liquid outlet 400, the first baffle 150 is disposed on the jet plate 100 and extends toward the lower cover plate 110 with a certain gap between the first baffle 150 and the lower cover plate 110, so that the fluid can flow from the gap on both sides of the first baffle 150.

Referring to fig. 4 and 8, in an alternative embodiment, the end surface of the lower cover plate 110 facing the jet plate 100 is provided with second diversion assemblies corresponding to the first diversion assemblies one by one;

the second flow guiding assembly comprises two second flow guiding plates 160, and the two first flow guiding plates 150 are arranged between the two second flow guiding plates 160; the liquid outlet 400 is located between the first baffle 150 and the second baffle 160; the two first deflectors 150 and the two second deflectors 160 form heat exchange channels for the liquid flowing from the liquid inlet 200 to the liquid outlet.

The lower cover plate 110 is provided with a second flow guiding assembly, two first flow guiding plates 150 are arranged between two second flow guiding plates 160 of the second flow guiding assembly, and the first flow guiding plates 150 and the second flow guiding plates 160 form a channel for guiding fluid to the liquid outlet 400.

And the liquid outlet 400 is located between the first baffle 150 and the second baffle 160; fluid entering the lower exchange chamber 140 from the inlet 200 flows along the channel formed by the two first baffles 150 toward the lower cover plate 110, and then two flows are formed along the channel formed by the first and second baffles 150 and 160 toward the outlet 400.

That is, the fluid flows into the lower exchange chamber 140 through the liquid inlet 200 to form jet impact, and flows into the upper exchange chamber 120 through the liquid outlet 400 after flowing one end of the lower exchange chamber 140 for a distance; because the number of inlets 200 is smaller than the number of outlets 400, the flow rate of fluid entering lower exchange chamber 140 from inlets 200 is greater than the flow rate of fluid entering upper exchange chamber 120 from outlets 400, such that fluid entering lower exchange chamber 140 from inlets 200 forms a jet.

In an alternative embodiment, a plurality of metal powder layers 170 are disposed on the lower cover plate 110, and the metal powder layers 170 are disposed between two second deflectors 160.

In alternative embodiments, the metal powder layer 170 is formed using high temperature sintering or spraying.

A metal powder layer 170 formed of metal powder is provided on the lower cover plate 110, and the metal powder layer 170 is generally formed by high temperature sintering or spraying; the surface roughness of the metal powder layer 170 can strengthen disturbance to the fluid and increase the convective heat transfer capability; and the pore structure exists in the metal powder layer 170, so that fluid can enter the pore structure to further exchange heat after impacting the surface, which is equivalent to increasing the surface area of jet impact heat exchange.

In an alternative embodiment, both ends of the jet plate 100 in the first direction are provided with notches 500;

a positioning protrusion 600 matched with the notch 500 is arranged on the upper cover plate 900, and the positioning protrusion 600 is matched with the notch 500 to accurately mount the upper cover plate 900 and the jet plate 100.

The upper cover plate 900 is generally fixed on the lower cover plate 110 by adopting a welding mode, in order to accurately weld the upper cover plate 900 and the lower cover plate 110, a fixing groove is formed in the lower cover plate 110, and the edge of the upper cover plate 900 can be accurately clamped in the fixing groove, so that the upper cover plate 900 and the lower cover plate 110 can be accurately assembled.

In order to accurately assemble the upper cover plate 900 with the jet plate 100, a positioning protrusion 600 is provided on the upper cover plate 900, a notch 500 is provided on the jet plate 100, and the positioning protrusion 600 is matched with the notch 500, so that the upper cover plate 900 and the jet plate 100 are accurately assembled.

In an alternative embodiment, the plurality of liquid inlets 200 and the plurality of liquid outlets 400 taper in the first direction.

The metal powder is copper powder or aluminum powder, and the water-cooling plate is copper or aluminum; the metal powder and the water cooling plate are made of the same material.

In some embodiments, the liquid inlet 200 and the liquid outlet 400 are gradually smaller along the first direction, so that when the temperature rise of the fluid is larger, the temperature difference of the cooling plate main body is larger, and the sizes of the liquid inlet 200 and the liquid outlet 400 are gradually smaller along the first direction; therefore, the convection heat exchange capacity can be continuously improved along the flow direction, and the influence caused by the temperature rise of the fluid is eliminated or weakened.

According to the water cooling plate provided by the invention, the first bulge 300 is arranged on one end face of the jet flow plate 100, the second bulge 130 is arranged on the other end face of the jet flow plate 100, the second bulge 130 is positioned between the two first bulges 300, fluid in the upper cooling cavity enters the lower cooling cavity from the liquid inlet 200, fluid in the lower cooling cavity enters the upper cooling cavity from the liquid outlet 400, and the first bulge 300 and the second bulge 130 cooperate to enable the fluid to flow back and forth between the upper cooling cavity and the lower cooling cavity, so that the interference of backflow on jet flow can be avoided, and the heat exchange effect is ensured.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The water cooling plate is characterized by comprising a cooling plate main body and a jet plate (100), wherein a cooling cavity is arranged in the cooling plate main body, and the jet plate (100) is arranged in the cooling cavity and divides the cooling cavity into an upper cooling cavity and a lower cooling cavity;

at least two first bulges (300) are arranged on one end surface of the jet plate (100), at least one second bulge (130) is arranged on the end surface of the jet plate (100) far away from the first bulges (300), and the second bulge (130) is positioned between two adjacent first bulges (300);

at least one first bulge (300) is arranged on one end face of the jet flow plate (100), a plurality of liquid inlets (200) are formed in one side of the first bulge (300), and a plurality of liquid outlets (400) are formed in the other side of the first bulge;

a plurality of liquid inlets (200) are formed in one side of the first protrusion (300), and a plurality of liquid outlets (400) are formed in the other side of the first protrusion (300);

and the liquid outlet (400) and the liquid inlet (200) penetrate through the jet plate (100), and the liquid outlet (400) and the liquid inlet (200) enable the upper cooling cavity and the lower cooling cavity to be communicated.

2. The water cooling plate according to claim 1, wherein the first protrusion (300) divides the upper cooling chamber into a plurality of upper exchange chambers (120) arranged in sequence along the first direction; the second protrusion (130) divides the lower cooling cavity into a plurality of lower exchange cavities (140);

the liquid inlet (200) and the liquid outlet (400) adjacent to the same first bulge are communicated with the same lower exchange cavity (140);

the first direction is a length direction of the jet plate (100).

3. The water cooling plate according to claim 2, wherein the cooling plate body is provided with a liquid inlet hole (700) and a liquid outlet hole (800), the liquid inlet hole (700) is communicated with the upper exchange cavity (120) only provided with the liquid inlet (200), and the liquid outlet hole (800) is communicated with the upper exchange cavity (120) only provided with the liquid outlet hole;

the direction from the liquid inlet hole (700) to the liquid outlet hole (800) is the same as the first direction.

4. A water cooling plate according to claim 3, wherein each liquid inlet (200) is provided with two liquid outlets (400) respectively, and the liquid inlet (200) is located between two adjacent liquid outlets (400).

5. The water-cooled plate of claim 4, wherein a plurality of sets of first flow directing assemblies are provided on an end face of the jet plate (100) remote from the first protrusion (300); the plurality of groups of first diversion assemblies are sequentially arranged along the first direction;

each group of the first diversion components comprises a plurality of first diversion components arranged along the length direction of the first bulge (300);

each first flow guide assembly is arranged corresponding to one liquid inlet (200), each first flow guide assembly comprises two first flow guide plates (150), each first flow guide plate (150) is arranged on two sides of the liquid inlet (200), and each first flow guide plate (150) is located between two liquid outlets (400) corresponding to the liquid inlet (200).

6. The water cooling plate according to claim 5, wherein the cooling plate body comprises a lower cover plate (110) and an upper cover plate (900), the upper cover plate (900) being disposed on the lower cover plate (110); the liquid inlet hole (700) and the liquid outlet hole (800) are arranged on the upper cover plate (900);

the end face of the jet plate (100) with the first bulge (300) faces the upper cover plate (900), and the end face of the jet plate (100) with the second bulge (130) faces the lower cover plate (110).

7. The water cooling plate according to claim 6, wherein second diversion components which are in one-to-one correspondence with the first diversion components are arranged on the end face of the lower cover plate (110) facing the jet plate (100);

the second flow guiding assembly comprises two second flow guiding plates (160), and the two first flow guiding plates (150) are arranged between the two second flow guiding plates (160); the liquid outlet (400) is positioned between the first guide plate (150) and the second guide plate (160); the two first deflectors (150) and the two second deflectors (160) form a heat exchange channel for liquid to flow from the liquid inlet (200) to the liquid outlet.

8. The water cooling plate according to claim 6, wherein a plurality of metal powder layers (170) are provided on the lower cover plate (110), the metal powder layers (170) being provided between two second deflectors (160).

9. The water-cooled plate according to claim 6, characterized in that both ends of the jet plate (100) in the first direction are provided with notches (500);

and a positioning protrusion (600) matched with the notch (500) is arranged on the upper cover plate (900), and the positioning protrusion (600) is matched with the notch (500) to accurately install the upper cover plate (900) and the jet plate (100).

10. The water cooled plate of claim 1 wherein a plurality of said liquid inlets (200) and a plurality of said liquid outlets (400) taper in a first direction.