CN209929330U - Cooling device and annealing furnace - Google Patents

Abstract

The application discloses cooling device and annealing stove belongs to battery piece production technical field. This cooling device includes at least one condenser, interior casing and the axial fan that is used for convulsions, wherein: the condenser is arranged at the upper end opening of the inner shell and is butted with the upper end opening of the inner shell; the axial flow fan is arranged below the inner shell and communicated with the lower end opening of the inner shell; the condenser is arranged below the furnace body and forms a furnace chamber with the side wall and the upper wall of the furnace body, and after the axial flow fan operates, hot air in the furnace chamber is downwards pumped through the inner shell. This application forms the water-cooling circulation structure of furnace body through set up the condenser at the furnace body lower extreme to set up axial fan below the condenser, realize the stable cooling of airtight cavity, avoid the temperature sharply to rise or reduce and treat the machined part and cause the damage.

Description

Cooling device and annealing furnace

Technical Field

The invention belongs to the technical field of battery piece production, and relates to a cooling device and an annealing furnace.

Background

In the production process of the battery piece, the battery piece needs to be placed into an annealing furnace for annealing treatment, and the annealing process involves the process requirement of temperature reduction in the furnace body.

When the temperature in the furnace body is regulated and controlled conventionally, the temperature in the furnace body is usually controlled by controlling the power of the infrared lamp tube. However, it is relatively easy to control the temperature of the infrared lamp tube to raise the temperature of the furnace body, it is difficult to reduce the temperature of the furnace body by reducing the power of the infrared lamp tube, and it is difficult to accurately control the temperature of the furnace body.

Disclosure of Invention

In order to solve the problem that the temperature of the furnace body is difficult to reduce and the temperature of the furnace body is difficult to accurately control through reducing the power of the infrared lamp tube in the related technology, the application provides a cooling device and an annealing furnace, and the specific technical scheme is as follows:

in a first aspect, there is provided a cooling device comprising at least one condenser, an inner casing and an axial fan for air extraction, wherein: the condenser is arranged at the upper end opening of the inner shell and is butted with the upper end opening of the inner shell; the axial flow fan is arranged below the inner shell and communicated with the lower end opening of the inner shell; the condenser is arranged below the furnace body and forms a furnace chamber with the side wall and the upper wall of the furnace body, and after the axial flow fan operates, hot air in the furnace chamber is downwards pumped through the inner shell. The condenser is arranged at the lower end of the furnace body to form a water-cooling circulation structure of the furnace body, and the axial flow fan is arranged below the condenser, so that stable cooling of the closed cavity is realized, and the phenomenon that the temperature rises sharply or is reduced to damage the workpiece to be processed is avoided.

Optionally, the cooling device that this application provided still includes the shell body, and the shell body is wrapped in interior casing outward, and has the gap between the upper end opening of shell body and the upper end opening of interior casing, and the gap supplies the air between shell body and the interior casing to flow into to the condenser top. Through setting up the shell body, there is the gap between the upper end opening that makes the shell body and the upper end opening of interior casing, and then can flow in the condenser top through the gap with the air between two casings, make the gaseous recycling of low temperature in the furnace body again, realize the stable reduction of furnace body.

Optionally, the cooling device that this application provided still includes the impeller, and the impeller is installed in axial fan's output, and the impeller is located the space in the shell body and the shell body is external. The impeller is utilized to accelerate the air flow of the cavity between the two shells, and the cooling efficiency is improved.

Optionally, the cooling device that this application provided still includes the otter board, and the otter board is installed between interior casing and condenser, has evenly seted up the mesh on the net. Through set up the otter board between condenser and interior casing, can take out down to the gas of interior casing more even from the condenser top, the scope of taking out is wider to realize balanced and cool down fast.

Optionally, the inner shell is provided with a vent which can be connected with an external blowing device, and the vent guides the low-temperature gas provided by the external blowing device into the inner shell. The inner shell is communicated with the external blowing device, so that low-temperature gas can be blown into the inner shell, and the temperature of the condenser and the air above the condenser can be reduced in an auxiliary mode.

Optionally, the lower end opening of the inner shell is smaller than the upper end opening of the inner shell to form a cavity with a wide upper part and a narrow lower part, so that pumped fluid air is smoothly pumped out when air is pumped out.

Optionally, the cooling device provided by the present application further includes at least one heating pipe, and the heating pipe is located at a side of the condenser. The heating pipe is arranged to realize the heating in the furnace body.

Optionally, the number of the condensers is at least two, at least two condensers are arranged side by side, and at least one heating pipe is located between two adjacent condensers. Through setting up a plurality of condensers side by side to with the heating pipe setting between the condenser, be convenient for to the balanced cooling of each heating pipe.

Optionally, the cooling device provided by the application further comprises two air duct baffles, and the two air duct baffles are vertically installed and are respectively located at two ends of the condenser. The two ends of the condenser are provided with the upward air duct baffles, so that the air with reduced temperature circulating from the gap into the furnace body can reach the middle part of the furnace body, and the condition that the temperature at the bottom of the furnace body is low and the temperature at the upper part of the furnace body is high, and further the temperature in the furnace body is unbalanced is avoided.

Optionally, for each condenser, the condenser includes a water inlet pipe, a water outlet pipe and a condensation plate, the water inlet pipe is communicated with a water inlet of the pipeline in the condensation plate, and the water outlet pipe is communicated with a water outlet of the pipeline in the condensation plate. The pipeline is designed in the condensation plate to communicate with the external condensed liquid, so that the circulation of the condensed liquid in the condensation plate is realized, and the continuous temperature reduction of the furnace body temperature is realized.

Optionally, one pipeline is arranged in the condensation plate, and the pipeline is wound in the condensation plate according to a preset mode; or at least two pipelines in the condensation plate are provided, the water inlet pipe is respectively communicated with the water inlet of each pipeline in the condensation plate, and the water outlet pipe is respectively communicated with the water outlet of each pipeline in the condensation plate.

In a second aspect, there is provided an annealing furnace, which includes a cell conveying device, a heating device, a heat preservation device and a cooling device, wherein: the battery piece conveying device penetrates through the heating device, the heat preservation device and the cooling part, the heating device is used for heating the battery pieces on the battery piece conveying device, the heat preservation device is used for preserving heat of the battery pieces on the battery piece conveying device, and the cooling part is used for cooling the battery pieces on the battery piece conveying device; the furnace body bottom of the heating device and/or the furnace body bottom of the heat preservation device are provided with at least one cooling device as provided in the first aspect and the various alternatives of the first aspect.

The heating device, the heat preservation device and the cooling device are combined, so that the annealing treatment of the battery piece on the battery piece conveying device is realized, and the service life of the battery piece is prolonged; the heating device and/or the heat preservation device are/is provided with the cooling device, so that the furnace body of the heating device and/or the heat preservation device is constantly cooled.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of a cooling device provided in one embodiment of the present application;

FIG. 2 is a cross-sectional view of a cooling device provided in an embodiment of the present application;

FIG. 3 is a schematic illustration of a gas cycle provided in one embodiment of the present application.

Wherein the reference numbers are as follows:

10. a condenser; 11. a water inlet pipe; 12. a water outlet pipe; 13. a condensing plate; 20. an inner housing; 30. an axial flow fan; 40. an outer housing; 50. an impeller; 60. heating a tube; 70. an air duct baffle.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Fig. 1 is a schematic structural view of a cooling device provided in an embodiment of the present application, and fig. 2 is a sectional view of the cooling device provided in an embodiment of the present application, which includes at least one condenser 10, an inner case 20, and an axial fan 30 for draft, wherein: the condenser 10 is installed at an upper end opening of the inner case 20 to be butted with the upper end opening of the inner case 20; the axial flow fan 30 is installed below the inner housing 20 and communicated with the lower end opening of the inner housing 20; the condenser 10 is located under the furnace body, and forms a furnace chamber with the side wall and the upper wall of the furnace body, and after the axial flow fan 30 operates, hot air in the furnace chamber is drawn downwards through the inner shell 20.

Generally, the cooling device is installed at the lower end of the furnace or other chamber requiring cooling. The condenser 10 may form a sealed furnace chamber with both side surfaces and the top surface of the furnace body or chamber. However, it should be noted that the sealed cavity described herein may not be a strictly sealed cavity, and may also have a gap or a through hole that can be vented to the outside.

In a possible implementation manner, the cooling device provided by the present application may further include an outer shell 40, the outer shell 40 is wrapped around the inner shell 20, and a gap exists between an upper end opening of the outer shell 40 and an upper end opening of the inner shell 20, and the gap allows air between the outer shell 40 and the inner shell 20 to flow into the space above the condenser 10.

The volume of the outer casing 40 is generally larger than that of the inner casing 20, that is, the outer casing 40 can be wrapped around the inner casing 20, so that a space is formed between the inner casing 20 and the outer casing 40, so that when the axial flow fan 30 is operated, hot air in the oven cavity is drawn downwards through the inner casing 20, air drawn out from the oven cavity is present in the space formed between the inner casing 20 and the outer casing 40, but the air is cooled after being retained in the space, so that the temperature of the air in the space formed between the inner casing 20 and the outer casing 40 is lower than that of the air of the oven body.

In order to avoid excessive temperature reduction in the furnace body, air with a slightly lower temperature in the space formed between the inner shell 20 and the outer shell 40 can be circulated into the furnace body, so as to realize stable circulation temperature reduction in the furnace body.

This application is through setting up shell body 40, makes to have the gap between the upper end opening of shell body 40 and the upper end opening of interior casing 20, and then can flow in the air between two casings to condenser 10 top through the gap, makes the gaseous recirculation of low temperature in the furnace body, realizes the stable reduction of furnace body.

The axial flow fan 30 draws the air above the condenser 10 downward, and the air between the two casings flows into the upper part of the condenser 10 through the gap, thereby realizing the flowing circulation of the air.

In order to accelerate the fluidity of the air in the space between the outer shell 40 and the inner shell 20 and further accelerate the air in the space to circularly flow into the furnace body, the cooling device provided by the present application may further include an impeller 50, the impeller 50 is installed at the output end of the axial flow fan 30, and the impeller 50 is located in the space inside the outer shell 40 and outside the inner shell 20. Thus, the impeller 50 can be used for accelerating the air flow of the cavity between the two shells, accelerating the low-temperature air flow in the cavity between the two shells to the furnace body above the condenser 10, and further improving the cooling efficiency in the furnace body.

Optionally, the lower opening of the inner housing 20 is smaller than the upper opening of the inner housing 20 to form a cavity with a wide top and a narrow bottom, so that the pumped fluid air can be smoothly pumped out during air pumping.

In annealing furnaces or other types of furnaces, there is often a need to heat the furnace chamber, and for this purpose, the cooling device provided by the present application may further comprise at least one heating pipe 60, the heating pipe 60 being located at the side of the condenser 10. Through setting up heating pipe 60, realize the heating to the furnace body in addition, through setting up condenser 10 at the side of heating pipe 60, avoid heating pipe 60 overheated, prolong heating pipe 60's life.

The heating pipe 60 may be an infrared heating pipe, an ultrasonic heating pipe, etc., and the kind of the heating pipe 60 is not limited in this application.

In a possible implementation, the length of the furnace chamber to be cooled may be relatively long, in order to facilitate the disassembly of the cooling device, and the furnace chambers with different lengths may be satisfied, so as to improve the adaptability of the cooling device, the condensers 10 provided in the present application may be at least two, at least two condensers 10 are arranged side by side, and at least one heating pipe 60 is located between two adjacent condensers 10.

Further, at least one condenser 10 may be provided detachably, or the condenser 10 at the edge may be provided detachably.

In this way, the cooling device provided by the application is provided with a plurality of condensers 10 arranged side by side, and the heating pipes 60 are arranged among the condensers 10, so that the uniform cooling of the heating pipes 60 is facilitated; the removal and replacement of the condenser 10 will be facilitated by providing a plurality of condensers 10.

Since the air between the two shells can flow into the furnace chamber above the condenser 10 through the gap between the upper ends of the two shells, if the low-temperature air is collected at the bottom of the furnace chamber, the air temperature in the furnace chamber is unbalanced, and the unbalanced air temperature may affect the quality of the materials (such as silicon wafers or battery plates) to be heated in the furnace chamber. In order to avoid the low-temperature air between the two shells flowing into the oven cavity and then gathering at the bottom of the oven cavity, the cooling device provided by the present application may further include two air duct baffles 70, wherein the two air duct baffles 70 are vertically installed and located at two ends of the condenser 10, respectively. The two ends of the condenser are provided with the upward air duct baffles 70, so that the air with reduced temperature circulating from the gap into the furnace body can reach the middle part of the furnace body, and the condition that the temperature at the bottom of the furnace body is low and the temperature at the upper part of the furnace body is high, and further the temperature in the furnace body is unbalanced is avoided.

Referring to fig. 3, which is a top view of the cooling device provided in an embodiment of the present application, for each condenser 10, the condenser 10 includes a water inlet pipe 11, a water outlet pipe 12, and a condensation plate 13, the water inlet pipe 11 is communicated with a water inlet of a pipeline in the condensation plate 13, and the water outlet pipe 12 is communicated with a water outlet of a pipeline in the condensation plate 13. The pipeline is designed in the condensation plate 13 to communicate with the external condensation liquid, so that the circulation of the condensation liquid in the condensation plate 13 is realized, and further the continuous temperature reduction of the furnace body temperature is realized.

The condensed liquid may be water or other types of liquid having a condensing effect, and the type of the condensed liquid is not limited in the present application. Generally, the condensed liquid with a lower viscosity is usually selected to avoid the blockage of the pipeline in the condensing plate 13 by the condensed liquid with a higher viscosity, and the condensed liquid with a higher viscosity has a slower fluidity and may have a poorer cooling effect.

In practical applications, there are various implementations of the pipes in the condensation plate 13, and in one implementation, there may be one pipe in the condensation plate 13, and the pipe is wound in the condensation plate 13 according to a predetermined manner. In another implementation, the number of the pipelines in the condensation plate 13 may be at least two, the water inlet pipe 11 is respectively communicated with the water inlet of each pipeline in the condensation plate 13, and the water outlet pipe 12 is respectively communicated with the water outlet of each pipeline in the condensation plate 13.

In a possible implementation manner, the cooling device provided by the present application may further include a mesh plate, which may be installed between the inner shell 20 and the condenser 10, and mesh holes are uniformly opened on the mesh plate. Through set up the otter board between condenser 10 and interior casing 20, can take out down to the gas of interior casing 20 more even from condenser 10 top, the scope of taking out is wider to realize balanced and rapid cooling.

In practical applications, in order to further accelerate the flow of the gas above the condenser 10, thereby achieving rapid cooling, a vent capable of being connected with an external blowing device may be further disposed on the inner casing 20, and the vent guides the low-temperature gas provided by the external blowing device into the inner casing 20.

When the low-temperature gas needs to be input into the inner shell 20 in use, the vent on the inner shell 20 is communicated with the output port of the external blowing device, so that the low-temperature gas provided by the blowing device is introduced into the inner shell 20.

Since the inner shell 20 is filled with low-temperature gas, the temperature of the low-temperature gas is lower than the temperature above the condenser 10, namely the temperature in the furnace, and therefore the low-temperature gas rises above the condenser 10, and the circulating flow of the gas is realized.

In this way, by communicating the inner casing 20 with the external blowing device, it is possible to blow low-temperature gas into the inner casing 20, thereby assisting in lowering the temperature of the condenser 10 and the air above.

In a possible implementation manner, when the ventilation opening on the inner housing 20 is not required to be in butt joint with an external blowing device, the ventilation opening can be blocked by a plug to prevent external air from entering the inner housing 20, and when the ventilation opening is required to be in butt joint with the external blowing device, the plug can be removed to communicate the ventilation opening with an output port of the blowing device.

To sum up, the cooling device that this application provided forms the water-cooling circulation structure of furnace body through set up the condenser at the furnace body lower extreme to set up axial fan in the condenser below, realize the stable cooling of airtight cavity, avoid the temperature sharply to rise or reduce and treat the machined part and cause the damage.

In addition, this application still provides an annealing stove, and this annealing stove includes battery piece conveyor, heating device, heat preservation device and cooling device, wherein: the battery piece conveying device penetrates through the heating device, the heat preservation device and the cooling part, the heating device is used for heating the battery pieces on the battery piece conveying device, the heat preservation device is used for preserving heat of the battery pieces on the battery piece conveying device, and the cooling part is used for cooling the battery pieces on the battery piece conveying device; at least one cooling device provided in various alternatives in fig. 1 to 3 is mounted on the bottom of the furnace body of the heating device and/or the bottom of the furnace body of the heat preservation device.

Optionally, the cell conveying device includes a conveying belt and a driving mechanism for driving the conveying belt to convey, and the conveying belt may be a steel mesh belt to meet the conveying requirement in a high-temperature environment.

Optionally, the heating device may select a heating lamp tube to heat the battery plate on the battery plate conveying device. The heating lamp tube may be an infrared irradiation lamp tube or the like that can be used for temperature rise.

Optionally, the heat preservation device may select heating lamps to perform heat preservation treatment on the battery pieces on the battery piece conveying device, and generally, the number of the heating lamps in the heat preservation device is less than that of the heating lamps in the heating device, or the heating power of the heating lamps in the heat preservation device is lower than that of the heating lamps in the heating device.

Optionally, a fan or other cooling devices may be disposed in the cooling portion to cool the battery cells on the battery cell conveying device.

In summary, the annealing furnace provided by the application realizes the annealing treatment of the battery piece on the battery piece conveying device by combining the heating device, the heat preservation device and the cooling device, and prolongs the service life of the battery piece; the heating device and/or the heat preservation device are/is provided with the cooling device, so that the furnace body of the heating device and/or the heat preservation device is constantly cooled.

It should be noted that, in the present application, the term "at least one" means one, two or more than two unless otherwise specified.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (10)

1. A cooling device, characterized in that the cooling device comprises at least one condenser, an inner casing and an axial fan for air extraction, wherein:

the condenser is arranged at an opening at the upper end of the inner shell and is butted with the opening at the upper end of the inner shell;

the axial flow fan is arranged below the inner shell and communicated with the lower end opening of the inner shell;

the condenser is positioned below the furnace body and forms a furnace chamber with the side wall and the upper wall of the furnace body.

2. The cooling device according to claim 1, further comprising an outer casing, wherein the outer casing is wrapped around the inner casing, and a gap is formed between an upper end opening of the outer casing and an upper end opening of the inner casing, and the gap allows air between the outer casing and the inner casing to flow into a space above the condenser.

3. The cooling device as claimed in claim 2, further comprising an impeller mounted at an output end of the axial flow fan, and located in a space inside the outer housing and outside the inner housing.

4. The cooling device as claimed in claim 1, further comprising a mesh plate installed between the inner case and the condenser, wherein meshes are uniformly formed on the mesh plate.

5. The cooling device as claimed in claim 1, wherein the inner housing is provided with a vent connectable to an external blowing device, the vent directing cryogenic gas provided by the external blowing device into the inner housing.

6. The cooling apparatus of claim 1, further comprising at least one heating tube located laterally of the condenser;

the condenser is at least two, at least two condensers set up side by side, at least one the heating pipe is located between two adjacent condensers.

7. The cooling device according to claim 1, further comprising two air duct baffles vertically installed at both ends of the condenser, respectively.

8. A cooling arrangement according to any one of claims 1-7, wherein for each condenser, the condenser comprises a water inlet pipe, a water outlet pipe and a condensation plate, the water inlet pipe communicating with the water inlet of the tubes in the condensation plate, and the water outlet pipe communicating with the water outlet of the tubes in the condensation plate.

9. The cooling apparatus as claimed in claim 8, wherein the number of the pipes in the condensing plate is one, and the pipes are wound in the condensing plate in a predetermined manner; or,

the pipeline in the condensation plate is at least two, the inlet tube respectively with the water inlet intercommunication of each pipeline in the condensation plate, the outlet pipe respectively with the delivery port intercommunication of each pipeline in the condensation plate.

10. The annealing furnace is characterized by comprising a battery piece conveying device, a heating device, a heat preservation device and a cooling device, wherein:

the battery piece conveying device penetrates through the heating device, the heat preservation device and the cooling device, the heating device is used for heating the battery pieces on the battery piece conveying device, the heat preservation device is used for preserving heat of the battery pieces on the battery piece conveying device, and the cooling device is used for cooling the battery pieces on the battery piece conveying device;

at least one cooling device as claimed in any one of claims 1 to 9 is mounted on the bottom of the furnace body of the heating device and/or the bottom of the furnace body of the heat preservation device.

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