CN217073365U

CN217073365U - Heat abstractor and 3D printer

Info

Publication number: CN217073365U
Application number: CN202122966266.XU
Authority: CN
Inventors: 唐京科; 王显达; 吴大江; 李鹏健
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-07-29
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to a 3D printer structure field aims at solving 3D and prints forced air cooling noise and the great problem of vibration, provides heat abstractor and 3D printer. The heat sink includes an outer wall. The outer wall body is enclosed into a discharge channel for printing materials to pass through; the discharge passage has a feed inlet and a discharge outlet extending to the outer surface of the outer wall body. A cooling flow channel is arranged in the outer wall body and used for cooling liquid to pass through; the cooling flow channel passes through the periphery of the discharge channel and is provided with a liquid inlet and a liquid outlet. The beneficial effects of the utility model are that can conveniently realize the liquid cooling repacking of 3D printer, can realize the cooling of 3D printer heat dissipation more effectively.

Description

Heat abstractor and 3D printer

Technical Field

The utility model relates to a 3D printer structure field particularly, relates to heat abstractor and 3D printer.

Background

The existing 3D printer mainly adopts an air cooling heat dissipation mode. Under the same temperature target needs to be reached, the air-cooled heat dissipation must have a large effective air volume, and this can lead to noise and vibration to be large, and then influences product printing effect and user experience.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing heat abstractor and 3D printer to solve 3D and print forced air cooling noise and vibrate great problem.

The embodiment of the utility model is realized like this:

a heat dissipation device comprises an outer wall body, wherein the outer wall body comprises an outer frame wall and an inner wall connected to the inner part of the outer frame wall; the inner side of the inner wall defines a discharge channel, the discharge channel is used for printing materials to pass through and is provided with a feed inlet and a discharge outlet; the outer frame wall surrounds the periphery of the inner surrounding wall, the cooling flow channel is limited between the outer frame wall and the inner surrounding wall, and the cooling flow channel is used for cooling liquid to pass through and is provided with a liquid inlet and a liquid outlet.

The heat abstractor in this scheme can be used to repack current adoption forced air cooling radiating printer, during the use, with printer choke connection in this feed inlet, will print the shower nozzle and be connected to the discharge gate and can realize the repacking.

To the printer that the repacking was accomplished, when printing, can lead to the coolant liquid at cooling channel, the in-process that the printing material passes through discharging channel, its heat will conduct to outer wall body, and then is taken away in the coolant liquid of cooling channel by the through-flow to realize the liquid cooling.

From this, heat abstractor in this scheme has the liquid cooling repacking that can conveniently realize the 3D printer, can realize the refrigerated beneficial effect of 3D printer heat dissipation more effectively.

In a possible implementation manner, the liquid inlet and the liquid outlet are arranged on the outer frame wall.

In one possible implementation:

the outer frame wall comprises a body and a cover part, and the body and the inner wall are of an integral structure; the cover piece detachably covers the opening and can close or open the cooling flow channel; the liquid inlet and the liquid outlet are arranged on the body.

In one possible implementation:

the body comprises a top wall, a bottom wall, a first side wall, a second side wall and a third side wall; the top wall and the bottom wall are opposite at intervals along the axial direction of the inner surrounding wall and are respectively and vertically intersected and connected with the inner surrounding wall into a whole; the first, second and third side walls being connected between the top and bottom walls, respectively, to form a body having the opening, the cover being removably connected to the body opposite the third side wall; one side of the inner wall close to the third side wall is integrally connected with the third side wall;

the first side wall and the inner wall define a first chamber therebetween, and the second side wall and the inner wall define a second chamber therebetween;

the outer wall body is also provided with a partition wall connected between the second side wall and the inner peripheral wall, and the partition wall is positioned between the top wall and the bottom wall and is attached to the inner side surface of the cover part so as to divide the second cavity into a liquid inlet chamber and a liquid outlet chamber; the liquid inlet is formed in the second side wall and communicated with the liquid inlet chamber, and the liquid outlet is formed in the second side wall and communicated with the liquid outlet chamber;

the cover piece is opposite to the inner wall at intervals and is in sealing fit with the partition wall so as to limit a liquid inlet flow channel communicated with the liquid inlet chamber and the first chamber and a liquid outlet flow channel communicated with the first chamber and the liquid outlet chamber;

the liquid inlet, the liquid inlet chamber, the liquid inlet runner, the first cavity, the liquid outlet runner, the liquid outlet chamber and the liquid outlet are communicated in sequence to form the cooling runner.

In one possible implementation:

the one side of interior surrounding wall orientation cover piece has along the sand grip of extending from first cavity orientation second cavity direction, the sand grip conflicts the cover piece, in order to separate the feed liquor runner and/or go out the liquid flow path.

In one possible implementation:

the convex strips positioned in the liquid inlet flow channel are spaced from each other, the convex strips and the adjacent partition walls are spaced from each other, and the convex strips and the adjacent top walls are spaced from each other;

the convex strips positioned in the liquid outlet flow channel are multiple and spaced from each other, the convex strips and the adjacent partition walls are spaced from each other, and the convex strips and the adjacent bottom walls are spaced from each other.

In one possible implementation:

the opening periphery of body is the concave annular that is equipped with of opening periphery, the annular is built-in to be equipped with the sealing washer, the sealed pressfitting of cover piece the sealing washer.

In one possible implementation:

said outer wall body including a box-like peripheral wall defining a cavity therein having an annular wall integrally connected to a side wall of said peripheral wall, said annular wall dividing said cavity into a third chamber located within said annular wall and a fourth chamber located outside said annular wall;

the third chamber is used as the discharge passage, and two ends of the third chamber are respectively communicated to a feed inlet and a discharge outlet which are arranged on the peripheral wall;

a partition wall is arranged in the fourth cavity and divides the fourth cavity into U-shaped channels serving as the cooling flow channels; the peripheral wall is provided with a liquid inlet and a liquid outlet which are respectively communicated with two ends of the U-shaped channel.

In one possible implementation:

and a shunting lug is arranged in the U-shaped channel and arranged along the flow direction of the cooling flow channel.

The application also provides a 3D printer, it includes choke, heat abstractor and prints the shower nozzle. The throat pipe is communicated with the heat dissipation device and communicated to the feeding hole; the printing nozzle is connected to the heat dissipation device and communicated to the discharge hole.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive efforts.

FIG. 1 is a three-dimensional view of a heat dissipation device in an embodiment of the present application;

FIG. 2 is a cross-sectional view of the heat sink of FIG. 1;

FIG. 3 is an expanded view of the heat sink of FIG. 1;

FIG. 4 is a three-dimensional view of the body and inner wall of the heat sink in FIG. 1;

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a three-dimensional view of a portion of the structure of a 3D printer including the heat sink of FIG. 1;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is a three-dimensional view of a heat dissipation device in another embodiment of the present application;

fig. 9 is a three-dimensional cross-sectional view of the heat sink of fig. 8.

Description of the main element symbols:

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application are described in detail. In the following embodiments and features of the embodiments may be combined with each other without conflict.

Example one

Referring to fig. 1 to 5, the present embodiment provides a heat dissipation device 10a, which includes an outer wall 11. The outer wall body 11 encloses a discharge channel 12 for the passage of printing material; the outlet channel 12 has an inlet opening 13 and an outlet opening 14 extending to the outer surface of the outer wall 11. A cooling flow passage 15 is formed in the outer wall body 11 and used for cooling liquid to pass through; the cooling flow channel 15 passes through the periphery of the discharge channel 12 and has a liquid inlet 16 and a liquid outlet 17.

The heat dissipation device 10a in this embodiment may be used to modify an existing 3D printer (see fig. 6 and 7 in a matching manner) that uses air cooling for heat dissipation, and when in use, modification may be implemented by connecting the throat 38 of the printer to the feeding port 13 and connecting the print head 39 to the discharging port 14.

To the 3D printer that the repacking was accomplished, when printing, can lead to the coolant liquid at cooling channel 15, the in-process of printing material through discharging channel 12, its heat will conduct to outer wall 11, and then is taken away by the coolant liquid of through-flow in cooling channel 15 to realize the liquid cooling.

From this, heat abstractor 10a in this scheme has the liquid cooling repacking that can conveniently realize 3D printer 37, can realize the refrigerated beneficial effect of 3D printer 37 heat dissipation more effectively.

In the present embodiment, the outer wall body 11 includes an outer frame wall 18 and an inner peripheral wall 19; the inner wall 19 defines the outlet channel 12 on the inside. The outer peripheral wall 18 surrounds the outer periphery of the inner peripheral wall 19, and the outer peripheral wall 18 and the inner peripheral wall 19 define the cooling flow passage 15 therebetween. The liquid inlet 16 and the liquid outlet 17 are arranged on the outer frame wall 18. Optionally, the outer frame wall 18 comprises a body 20 and a cover 21, the body 20 and the inner wall 19 being of unitary construction; the body 20 is provided with an opening at one side, and the cover 21 can detachably cover the opening and can close or open the cooling flow passage 15; the liquid inlet 16 and the liquid outlet 17 are opened in the body 20. In this embodiment, the body 20 and the inner wall 19 are of an integral structure, a through hole is formed in a block blank as the discharge passage 12, a channel is formed in the side surface of the block blank and is not communicated with the discharge passage 12 as the cooling flow passage 15, and a cover member 21 is fastened to the processed block blank by a screw 40 and closes the cooling flow passage 15. Under the structural form, the shape of the flow channel can be set according to the requirement. In order to ensure the heat dissipation effect, the material of the block blank is selected from materials with good heat conduction performance, such as copper, iron and other metal materials.

In the present embodiment, optionally, the body 20 includes a top wall 22, a bottom wall 23, a first side wall 24, a second side wall 25 and a third side wall 26; the top wall 22 and the bottom wall 23 are opposite along the axial direction of the inner wall 19 at intervals and are respectively and vertically intersected and connected with the inner wall 19 into a whole; a first side wall 24, a second side wall 25 and a third side wall 26 are connected between the top wall 22 and the bottom wall 23, respectively, to form a body 20 having an opening, and a cover 21 is detachably connected to the body 20 and is opposite to the third side wall 26; the side of the inner wall 19 adjacent to the third side wall 26 is integrally connected to the third side wall 26. First chamber 27 is defined between first sidewall 24 and inner peripheral wall 19, and second chamber 28 is defined between second sidewall 25 and inner peripheral wall 19. The outer wall 11 further has a partition 29 connected between the second side wall 25 and the inner peripheral wall 19, the partition 29 being located between the top wall 22 and the bottom wall 23 and abutting against the inner side of the cover 21 to divide the second chamber 28 into an inlet chamber 30 and an outlet chamber 31; the liquid inlet 16 opens into the second side wall 25 and communicates with the liquid inlet chamber 30, and the liquid outlet 17 opens into the second side wall 25 and communicates with the liquid outlet chamber 31. The cover member 21 is spaced apart from and in sealing engagement with the partition wall 29 to define an inlet flow path 32 communicating between the inlet chamber 30 and the first chamber 27 and an outlet flow path 33 communicating between the first chamber 27 and the outlet chamber 31. The liquid inlet 16, the liquid inlet chamber 30, the liquid inlet flow passage 32, the first cavity 27, the liquid outlet flow passage 33, the liquid outlet chamber 31 and the liquid outlet 17 are sequentially communicated to form the cooling flow passage 15. In this structure, the length of the cooling flow channel 15 is extended by the partition of the partition 29, the heat dissipation effect is increased, and the cooling flow channel 15 is substantially U-shaped, and the liquid inlet 16 and the liquid outlet 17 of this structure can be arranged on the same side, which is connected with the cooling liquid circulation pipeline. The first and

second sidewalls

24 and 25 are spaced apart from the inner wall 19 to define first and

second chambers

27 and 28, respectively, so that both sides of the inner wall 19 can contact the cooling fluid, thereby improving heat dissipation. In general, the structure forms a liquid cooling heat dissipation structure which enables three sides of the inner wall 19 to contact with the cooling liquid, and the heat dissipation effect is good. Optionally, a face of the inner wall 19 facing the cover 21 has a protruding strip 34 extending in a direction from the first chamber 27 to the second chamber 28, and the protruding strip 34 abuts against the cover 21 to separate the liquid inlet flow passage 32 and/or the liquid outlet flow passage 33. By providing the convex strips 34, the coolant can be divided and guided to flow in order, and noise caused by the flowing of the coolant can be reduced. Alternatively, the rib 34 is provided in plural, the plural ribs 34 are spaced from each other, the rib 34 is spaced from the adjacent partition 29, and the rib 34 is spaced from the adjacent top wall 22. The protruding strip 34 located in the liquid outlet channel 33 has a plurality of protruding strips 34, the protruding strips 34 are spaced from each other, the protruding strips 34 are spaced from the adjacent partition wall 29, and the protruding strips 34 are spaced from the adjacent bottom wall 23.

In this embodiment, a ring groove 35 is concavely provided on the periphery of the opening of the body 20, a sealing ring 36 is provided in the ring groove 35, and the cover member 21 is pressed on the sealing ring 36. By sealing with the packing 36 in the ring groove 35, the coolant in the cooling flow passage 15 is prevented from leaking from the mating surfaces of the lid member 21 and the body 20.

In this embodiment, the heat sink 10a may optionally further have a connecting portion 41 for facilitating its connection with other parts of the 3D printer, such as for connecting with the throat 38 of the 3D printer, so that the throat 38 maintains a relative position with respect to the feed opening 13.

Referring to fig. 6 and 7 in combination, the embodiment of the present application further provides a 3D printer 37, where a printing end of the printer mainly includes a throat 38, a heat dissipation device 10a, and a printing nozzle 39. The throat pipe 38 is communicated with the heat dissipation device 10a and communicated to the feeding hole 13; the print head 39 is connected to the heat sink 10a and communicates with the discharge port 14.

The 3D printer 37 in this embodiment can conveniently realize water-cooling heat dissipation by using the heat dissipation device 10a, and the heat dissipation effect is good.

Example two

In conjunction with fig. 8 and 9, the present application also provides another heat dissipation device 10b, which includes an outer wall 11. The outer wall body 11 encloses a discharge channel 12 for the passage of printing material; the outlet channel 12 has an inlet opening 13 and an outlet opening 14 extending to the outer surface of the outer wall 11. A cooling flow passage 15 is formed in the outer wall body 11 and used for cooling liquid to pass through; the cooling flow channel 15 passes through the periphery of the discharge channel 12 and has an inlet 16 and an outlet 17. Wherein the outer wall body 11 includes a box-shaped peripheral wall 49, the inner side of the peripheral wall 49 defines a cavity 42, the cavity 42 has an annular wall 44 therein integrally connected to a side wall 43 of the peripheral wall 49, and the annular wall 44 divides the cavity 42 into a third chamber 45 located inside the annular wall 44 and a fourth chamber 46 located outside the annular wall 44. The third chamber 45 serves as a discharge passage 12, and both ends thereof penetrate to a feed port 13 and a discharge port 14 provided in the peripheral wall 49, respectively. A partition wall 47 is provided in the fourth chamber 46, and the partition wall 47 partitions the fourth chamber 46 into U-shaped passages as the cooling flow passages 15. The peripheral wall 49 is provided with a liquid inlet 16 and a liquid outlet 17, and the liquid inlet 16 and the liquid outlet 17 are respectively communicated with two ends of the U-shaped channel.

The application method of the heat dissipation device 10b in this embodiment is substantially the same as that in the embodiment, and the liquid cooling modification of the 3D printer 37 can be conveniently realized, and the beneficial effect of heat dissipation and cooling of the 3D printer 37 can be more effectively realized.

Optionally, a flow dividing protrusion 48 is disposed in the U-shaped channel, and the flow dividing protrusion 48 is disposed along the flow direction of the cooling flow channel 15. The flow dividing projection 48 can divide the coolant, reducing the noise of the coolant flow.

The cooling fluid in the embodiments of the present application may be water or other cooling medium.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.

Claims

1. A heat dissipation device, characterized in that:

the heat dissipation device comprises an outer wall body, wherein the outer wall body comprises an outer frame wall and an inner surrounding wall connected into the outer frame wall;

the inner side of the inner wall defines a discharge channel, the discharge channel is used for printing materials to pass through and is provided with a feed inlet and a discharge outlet;

the outer frame wall surrounds the periphery of the inner surrounding wall, a cooling flow channel is defined between the outer frame wall and the inner surrounding wall, and the cooling flow channel is used for cooling liquid to pass through and is provided with a liquid inlet and a liquid outlet.

2. The heat dissipating device of claim 1, wherein:

the liquid inlet and the liquid outlet are arranged on the outer frame wall.

3. The heat dissipating device of claim 2, wherein:

the outer frame wall comprises a body and a cover part, and the body and the inner wall are of an integral structure;

the cover piece detachably covers the opening and can close or open the cooling flow channel;

the liquid inlet and the liquid outlet are arranged on the body.

4. The heat dissipating device of claim 3, wherein:

5. The heat dissipating device of claim 4, wherein:

6. The heat dissipating device of claim 5, wherein:

7. The heat dissipating device of claim 3, wherein:

8. The heat dissipating device of claim 1, wherein:

9. The heat dissipating device of claim 8, wherein:

10. A3D printer, comprising:

a throat;

the heat dissipating device of any of claims 1-9;

printing a spray head;

the throat pipe is communicated with the heat dissipation device and communicated to the feeding hole; the printing nozzle is connected to the heat dissipation device and communicated to the discharge hole.