CN217603027U

CN217603027U - Housing structure and vacuum generator assembly

Info

Publication number: CN217603027U
Application number: CN202123392382.1U
Authority: CN
Inventors: 王伟良; 李亮亮; 钱忠刚; 魏玉明; 王凯; 韩亚军; 王会智; 惠琳强
Original assignee: Tonghe New Energy Jintang Co ltd
Current assignee: Tonghe New Energy Jintang Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-10-18
Anticipated expiration: 2031-12-29

Abstract

The application provides a dustcoat structure, vacuum generator subassembly relates to solar cell production field. The outer cover structure comprises a cover body and a pneumatic pipe connected with the exhaust device, wherein an installation cavity used for accommodating the body is arranged in the cover body, an exhaust port is formed in one end of the cover body, the pneumatic pipe is installed at the exhaust port and is connected with the cover body in a sealing mode, and the pneumatic pipe is communicated with the installation cavity; the side wall of the cover body is provided with a first through hole for clamping the air suction pipe and a second through hole for clamping the air suction pipe, the first through hole and the second through hole are communicated with the mounting cavity, the side wall of the cover body is provided with a gap penetrating along the thickness direction of the side wall, the vacuum generator can be installed in the mounting cavity through the gap, and two ends of the gap extend to the first through hole and the second through hole. The probability of dust emission caused by the working of the vacuum generator can be reduced, so that the probability of silicon wafer pollution can be reduced.

Description

Housing structure and vacuum generator assembly

Technical Field

The application relates to the field of solar cell production, in particular to an outer cover structure and a vacuum generator assembly.

Background

Dust particles are generated in the battery production process, and after a period of time, the dust particles can be deposited on the surface of an automatic machine table to form a dust layer. The dust layer can generate dust when encountering external impact and air flow, and pockmark black spots EL are poor.

When the automatic coating equipment loads and unloads the sheet in the production process of the battery, the sheet is broken, dropped, warped and leaked due to the problems of abnormal mechanical arm, abnormal carrier graphite boat, hidden cracking of raw material sheet and the like. In order to improve the problem, the patch is generally adjusted by an auxiliary equipment suction pen, one end of the auxiliary equipment suction pen is connected with a vacuum generator, and the vacuum generator generates negative pressure to suck the silicon wafer out.

The vacuum generator has the working principle that compressed air is sprayed at high speed by using the spraying pipeline, and jet flow is formed at the outlet of the spraying pipeline to generate entrainment flow. Under the action of entrainment, air around the outlet of the injection pipeline is continuously sucked away, so that the pressure in the adsorption cavity is reduced to be lower than the atmospheric pressure, and a certain vacuum degree is formed. The vacuum generator is easy to impact dust accumulated on the surface of an automatic machine table to generate raise dust by jet flow sprayed from a spraying pipeline during working, the raise dust falls onto a carrier graphite boat to be in direct contact with a silicon wafer to form compounding, and the problems of pockmarks, poor black spot EL and the like are caused.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an outer cover structure and a vacuum generator assembly, which can reduce the probability of dust raising caused by the working of the vacuum generator, thereby reducing the probability of silicon wafer pollution.

The embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides an outer cover structure, which is used for a vacuum generator of a suction pen, where the vacuum generator includes a body, an air inlet pipe, and an air suction pipe, the body has an air inlet cavity, an injection pipeline, and an adsorption cavity, which are communicated with each other, the air inlet pipe is communicated with the air inlet cavity, the air suction pipe is communicated with the adsorption cavity, and the air suction pipe is used for being connected with the suction pen;

the outer cover structure comprises a cover body and a pneumatic pipe connected with the exhaust device, wherein an installation cavity used for accommodating the body is arranged in the cover body, an exhaust port is formed in one end of the cover body, the pneumatic pipe is installed at the exhaust port and is connected with the cover body in a sealing mode, and the pneumatic pipe is communicated with the installation cavity;

the side wall of the cover body is provided with a first through hole for clamping the air suction pipe and a second through hole for clamping the air suction pipe, the first through hole and the second through hole are communicated with the mounting cavity, the side wall of the cover body is provided with a gap penetrating along the thickness direction of the side wall, the body of the vacuum generator can be installed in the mounting cavity through the gap, and two ends of the gap extend to the first through hole and the second through hole.

In the technical scheme, the side wall of the cover body is provided with the gap penetrating along the thickness direction, the body of the vacuum generator can be arranged in the mounting cavity through the gap, two ends of the gap extend to the first through hole and the second through hole, when the vacuum generator is used, the body of the vacuum generator is arranged in the mounting cavity from the gap, the air inlet pipe is inserted in the second through hole and fixed through the second through hole, the air suction pipe of the vacuum generator is fixed through the first through hole, the air suction pipe is sealed with the hole wall of the first through hole, the air inlet pipe is sealed with the hole wall of the second through hole, and the gap is sealed. When the vacuum generator works, compressed gas is introduced through the air inlet pipe, the compressed air is sprayed out from the injection pipeline, a rolling suction effect is formed at the outlet of the injection pipeline, the pressure of the adsorption cavity is reduced to be lower than the atmospheric pressure to form a certain vacuum degree, and the patch can be adjusted after the air suction pipe is connected with the suction pen. The pneumatic pipe is installed in the exhaust port and is connected with the cover body in a sealing mode, the pneumatic pipe is communicated with the installation cavity, the pneumatic pipe can be entered into the pneumatic pipe through the installation cavity through the pneumatic pipe ejected from the ejection pipeline of the body and is then exhausted through the exhaust device, the probability of dust raising caused by the working of the vacuum generator can be reduced, the probability of silicon wafer pollution can be reduced, and the problems that a silicon wafer is badly pitted, black spots EL are generated and the like are solved.

In one possible embodiment, the first through hole and the second through hole are both round holes.

The intake pipe and the breathing pipe of vacuum generator generally are the pipe, and in above-mentioned technical scheme, first through-hole and second through-hole all set to the round hole, can make intake pipe and second through-hole, breathing pipe and first through-hole cooperate better, connect more stably, and more be difficult to the gas leakage.

Illustratively, the first and second through holes have a diameter of 7 to 10mm.

In a possible embodiment, the slit opening extends in a straight line.

The outer surface of vacuum generator's body generally is the plane or is the arc surface, and among the above-mentioned technical scheme, the gap mouth is for following sharp extension, then when putting into the installation intracavity with the body from gap mouth department, can be more convenient, and the edge of gap mouth is difficult to cause the body to block.

Illustratively, the length of the slot opening is 10-14 cm.

In one possible embodiment, the cover is a polymeric material.

In the technical scheme, compared with a cover body made of metal, the cover body made of polymer is not easy to corrode, and metal pollution is avoided.

In a possible embodiment, the thickness of the cover is 0.5 to 2mm.

In a second aspect, an embodiment of the present application provides a vacuum generator assembly, including a vacuum generator and an outer cover mechanism, where the vacuum generator includes a body, an air inlet pipe and an air suction pipe, the body has an air inlet cavity, an injection pipeline and an adsorption cavity which are communicated with each other, the air inlet pipe is communicated with the air inlet cavity, the air suction pipe is communicated with the adsorption cavity, and the air suction pipe is used for being connected with a suction pen;

the outer cover mechanism comprises a cover body and a pneumatic pipe used for being connected with the exhaust device, an installation cavity used for accommodating a body of the vacuum generator is arranged in the cover body, an exhaust port is formed in one end of the cover body, the pneumatic pipe is installed at the exhaust port and is connected with the cover body in a sealing mode, and the pneumatic pipe is communicated with the installation cavity;

the side wall of the cover body is provided with a first through hole and a second through hole, the first through hole and the second through hole are both communicated with the mounting cavity, the side wall of the cover body is provided with a gap opening used for installing a vacuum generator, and the gap opening is sealed;

the body is arranged in the mounting cavity, the air inlet pipe is inserted in the first through hole and is in sealing connection with the cover body, and the air suction pipe is inserted in the second through hole and is in sealing connection with the cover body.

In the technical scheme, the body is arranged in the mounting cavity, the gap opening is sealed, the air suction pipe is inserted in the second through hole and is in sealing connection with the cover body, the air inlet pipe is inserted in the first through hole and is in sealing connection with the cover body, and then air flow in the mounting cavity can only be discharged through the air outlet. When the vacuum generator works, compressed gas is introduced through the air inlet pipe, the compressed air is sprayed out from the injection pipeline to form a rolling suction effect at the outlet of the injection pipeline, the pressure of the suction cavity is reduced to be lower than the atmospheric pressure to form a certain vacuum degree, and the suction pen can work normally through the connection of the air suction pipe and the suction pen. The pneumatic pipe is installed in the gas vent and is connected with the cover body in a sealing mode, the pneumatic pipe is communicated with the installation cavity, the gas flow sprayed out of the gas inlet pipe can enter the pneumatic pipe through the installation cavity and is then discharged through the exhaust device, the probability of dust raising caused by the working process of the vacuum generator can be reduced, the probability of silicon wafer pollution can be reduced, and the problems that a silicon wafer is prone to pockmark generation, black spots EL are bad and the like are solved.

In a possible embodiment, the air inlet pipe and the cover body are connected in a sealing manner through sealing glue.

In one possible embodiment, the suction pipe is connected to the hood body by a sealing compound.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application 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 effort.

FIG. 1 is a schematic view of the structure of a housing according to embodiment 1 of the present application;

fig. 2 is a schematic structural diagram of a vacuum generator assembly according to an embodiment of the present application.

Icon: 10-a housing structure; 11-a housing; 111-vent; 112-a first via; 113-a second via; 114-a slit opening; 115-a mounting cavity; 12-a pneumatic tube; 20-a vacuum generator; 21-body; 211-an air intake chamber; 212-an injection conduit; 213-an adsorption chamber; 22-an air inlet pipe; 23-suction pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly and can include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

Example 1

The present embodiment provides a housing structure 10, please refer to fig. 1 and 2, which is used for a vacuum generator 20 of a suction pen. Generally, the vacuum generator 20 includes a body 21, and an air suction pipe 23 and an air inlet pipe 22 (refer to fig. 2) mounted on the body 21, the body 21 having an air inlet chamber 211, an injection pipe 212, and an adsorption chamber 213 communicating with each other, the air suction pipe 23 communicating with the adsorption chamber 213, the air suction pipe 23 being for connection with a suction pen, and the air inlet pipe 22 communicating with the air inlet chamber 211. When the suction pipe 23 and the vacuum generator 20 work, compressed gas is introduced through the air inlet pipe 22, the injection pipeline 212 injects compressed air and forms jet flow, entrainment flow is generated at the opening of the injection pipeline 212, the air around the opening of the injection pipeline 212 is continuously sucked under the entrainment effect, the pressure of the adsorption cavity 213 inside the body 21 is reduced to be lower than the atmospheric pressure, a certain vacuum degree is formed, and therefore the suction pipe 23 can act on a suction pen, and a patch is adjusted through the suction pen.

Referring to fig. 1, the external housing structure 10 includes a housing 11 and a pneumatic tube 12 connected to the air exhausting device, the housing 11 has an installation cavity 115 for accommodating the body 21 therein, one end of the housing 11 has an air outlet 111, the pneumatic tube 12 is installed at the air outlet 111 and hermetically connected to the housing 11, and the pneumatic tube 12 is communicated with the installation cavity 115.

The side wall of the cover body 11 is provided with a first through hole 112 for clamping the air suction pipe 23 and a second through hole 113 for clamping the air inlet pipe 22, the first through hole 112 and the second through hole 113 are both communicated with the mounting cavity 115, the side wall of the cover body 11 is provided with a slit opening 114 penetrating along the thickness direction, the vacuum generator 20 can be installed in the mounting cavity 115 through the slit opening 114, and two ends of the slit opening 114 extend to the first through hole 112 and the second through hole 113.

When the vacuum generator is used, the body 21 of the vacuum generator 20 is installed into the installation cavity 115 from the gap opening 114, the air inlet pipe 22 of the vacuum generator 20 is inserted into the second through hole 113 and fixed through the second through hole 113, the air suction pipe 23 of the vacuum generator 20 is fixed through the first through hole 112, the air suction pipe 23 is connected with the suction pen, and then the air suction pipe 23 is sealed with the hole wall of the first through hole 112, the air inlet pipe 22 is sealed with the hole wall of the second through hole 113, and the gap opening 114 is sealed.

The cover 11 is illustratively made of a polymer material, such as a plastic material. The cover 11 made of a polymer material is less likely to be corroded and does not cause metal contamination than the cover 11 made of a metal material.

Optionally, the cover 11 has a thickness of 0.5 to 2mm, for example 0.5mm, 1mm, 1.5mm or 2mm. The cover 11 having such a thickness range is suitable in thickness, and the body 21 of the vacuum generator 20 can be relatively easily fitted into the mounting cavity 115 through the slit opening 114.

When the vacuum generator 20 works, the airflow ejected from the ejection pipeline 212 enters the installation cavity 115, because the pneumatic pipe 12 is installed at the exhaust port 111 and is hermetically connected with the cover body 11, and the pneumatic pipe 12 is communicated with the installation cavity 115, the airflow ejected from the air inlet pipe 22 can enter the pneumatic pipe 12 through the installation cavity 115 and then is exhausted through the exhaust device, which can reduce the probability of dust raising caused by the work of the vacuum generator 20, thereby reducing the probability of silicon wafer pollution, and improving the problems of pitted silicon wafers, poor black spots EL and the like.

Generally, the air inlet pipe 22 and the air inlet pipe 23 of the vacuum generator 20 are both round pipes, and in order to better fix the air inlet pipe 23 and the air inlet pipe 22, for example, the first through hole 112 and the second through hole 113 are both round holes, so that the air inlet pipe 22 can be better matched with the second through hole 113 and the air inlet pipe 23 can be better matched with the first through hole 112, the connection is more stable, and air leakage is less prone to occurring.

Optionally, the diameter of the first and second through

holes

112, 113 is 7-10 mm, such as 7mm, 8mm, 9mm or 10mm.

In addition, the outer surface of the body 21 of the vacuum generator 20 is generally a plane or an arc surface, so that in order to facilitate placing the body 21 of the vacuum generator into the mounting cavity 115, exemplarily, the slit opening 114 extends along a straight line, and when the body 21 is placed into the mounting cavity 115 from the slit opening 114, it is more convenient, and the edge of the slit opening 114 is not easy to block the body 21.

Optionally, the length of the slit aperture 114 is 10-14 cm, such as 10cm, 11cm, 12cm, 13cm or 14cm.

In some embodiments, the cover 11 may be a plastic bottle, a first through hole 112 and a second through hole 113 are formed in a side wall of the plastic bottle, and a slit 114 is defined to extend to the first through hole 112 and the second through hole 113, and a mouth of the plastic bottle serves as the vent 111. The plastic bottle adopting the structure is used as the cover body 11 structure, the material is convenient to obtain, and the cost can be saved.

Example 2

The present embodiment provides a vacuum generator 20 assembly that includes a vacuum generator 20 and a housing mechanism.

The vacuum generator 20 comprises a body 21, an air inlet pipe 22 and an air suction pipe 23, the body 21 is provided with an air inlet cavity 211, an injection pipeline 212 and an adsorption cavity 213 which are communicated, the air inlet pipe 22 is communicated with the air inlet cavity 211, the air suction pipe 23 is communicated with the adsorption cavity 213, and the air suction pipe 23 is used for being connected with a suction pen. The operation principle of the vacuum generator 20 is described in detail in embodiment 1, and thus, will not be described in detail.

The cover mechanism comprises a cover body 11 and a pneumatic pipe 12 connected with the air exhaust device, wherein an installation cavity 115 used for accommodating the body 21 of the vacuum generator 20 is arranged in the cover body 11, an exhaust port 111 is arranged at one end of the cover body 11, the pneumatic pipe 12 is installed at the exhaust port 111 and hermetically connected with the cover body 11, and the pneumatic pipe 12 is communicated with the installation cavity 115.

The side wall of the cover body 11 is provided with a first through hole 112 and a second through hole 113, the first through hole 112 and the second through hole 113 are both communicated with the mounting cavity 115, the side wall of the cover body 11 is provided with a slit opening 114 for installing the vacuum generator 20, and the slit opening 114 is sealed. Illustratively, the slit aperture 114 may be selectively sealed with hot melt adhesive. In a specific use process, after the body 21 is placed into the mounting cavity 115 through the slit opening 114, the slit opening 114 is sealed by hot melt adhesive.

The body 21 is arranged in the mounting cavity 115, the air inlet pipe 22 is inserted into the first through hole 112 and is connected with the cover 11 in a sealing manner, and the air inlet pipe 22 is inserted into the second through hole 113 and is connected with the cover 11 in a sealing manner.

Illustratively, the air inlet pipe 22 is connected with the cover body 11 in a sealing manner by a sealant, the air inlet pipe 23 is connected with the cover body 11 in a sealing manner by a sealant, and the pneumatic pipe 12 is connected with the cover body 11 in a sealing manner by a sealant, wherein the sealant can be selected from hot melt adhesives. It is understood that the sealing connection may also be achieved by winding the raw material tape around the outer wall of the air inlet pipe 22, the air suction pipe 23 or the pneumatic pipe 12, and connecting the raw material tape to a position corresponding to the cover 11.

The body 21 is disposed in the mounting cavity 115, the slit 114 is sealed, the air suction pipe 23 is inserted into the second through hole 113 and is hermetically connected to the cover 11, the air inlet pipe 22 is inserted into the first through hole 112 and is hermetically connected to the cover 11, and thus, the air flow in the mounting cavity 115 can be discharged only through the air outlet 111. When the vacuum generator 20 works, the suction pen can normally work by being connected with the suction pen through the air suction pipe 23, the air flow sprayed out of the spraying pipeline 212 enters the installation cavity 115, because the pneumatic pipe 12 is installed at the air outlet 111 and is hermetically connected with the cover body 11, and the pneumatic pipe 12 is communicated with the installation cavity 115, the air flow sprayed out of the air inlet pipe 22 can enter the pneumatic pipe 12 through the installation cavity 115 and then is discharged through the exhaust device, the probability of dust raising caused by the working of the vacuum generator 20 can be reduced, the probability of silicon wafer pollution can be reduced, and the problems of pockmark generation, poor black spot EL generation and the like of the silicon wafer can be improved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cover structure is used for a vacuum generator of a suction pen, the vacuum generator comprises a body, an air inlet pipe and an air suction pipe, the body is provided with an air inlet cavity, an injection pipeline and an adsorption cavity which are communicated, the air inlet pipe is communicated with the air inlet cavity, the air suction pipe is communicated with the adsorption cavity, the air suction pipe is used for being connected with the suction pen, and the cover structure is characterized in that,

the outer cover structure comprises a cover body and a pneumatic pipe connected with an exhaust device, an installation cavity used for accommodating the body is arranged in the cover body, an exhaust port is formed in one end of the cover body, the pneumatic pipe is installed at the exhaust port and is connected with the cover body in a sealing mode, and the pneumatic pipe is communicated with the installation cavity;

the side wall of the cover body is provided with a first through hole used for clamping the air suction pipe and a second through hole used for clamping the air suction pipe, the first through hole and the second through hole are communicated with the installation cavity, the side wall of the cover body is provided with a gap which penetrates through the side wall along the thickness direction of the side wall, the body of the vacuum generator can be installed in the installation cavity through the gap, and two ends of the gap extend to the first through hole and the second through hole.

2. The cover structure according to claim 1, wherein the first and second through-holes are circular holes.

3. The housing structure according to claim 2, wherein the first through hole and the second through hole have a diameter of 7 to 10mm.

4. A cover structure according to any one of claims 1 to 3 wherein the slit aperture extends in a straight line.

5. The cover structure according to claim 4, wherein the length of the slit aperture is 10-14 cm.

6. A housing structure according to any one of claims 1 to 3, characterized in that the housing is of a polymeric material.

7. A cover structure according to claim 6, wherein the thickness of the cover is 0.5 to 2mm.

8. A vacuum generator assembly is characterized by comprising a vacuum generator and an outer cover mechanism, wherein the vacuum generator comprises a body, an air inlet pipe and an air suction pipe, the body is provided with an air inlet cavity, an injection pipeline and an adsorption cavity which are communicated, the air inlet pipe is communicated with the air inlet cavity, the air suction pipe is communicated with the adsorption cavity, and the air suction pipe is used for being connected with a suction pen;

the outer cover mechanism comprises a cover body and a pneumatic pipe connected with an exhaust device, an installation cavity used for accommodating the body of the vacuum generator is arranged in the cover body, an exhaust port is formed in one end of the cover body, the pneumatic pipe is installed at the exhaust port and is connected with the cover body in a sealing mode, and the pneumatic pipe is communicated with the installation cavity;

the side wall of the cover body is provided with a first through hole and a second through hole, the first through hole and the second through hole are both communicated with the mounting cavity, the side wall of the cover body is provided with a gap opening used for installing the vacuum generator, and the gap opening is sealed;

the body is arranged in the mounting cavity, the air inlet pipe is inserted into the first through hole and is in sealing connection with the cover body, and the air suction pipe is inserted into the second through hole and is in sealing connection with the cover body.

9. The vacuum generator assembly as recited in claim 8, wherein the inlet tube is sealingly connected to the housing by a sealant.

10. The vacuum generator assembly as claimed in claim 8, wherein the suction tube is connected to the housing by a sealing compound.