A swirl air chamber and swirl hot air coating oven

Abstract

The present invention provides a swirl air chamber and a swirl hot air coating oven, wherein the swirl air chamber comprises: a cyclone shell, an air outlet cover and a hot air branch pipe for passing hot air into the interior of the cyclone shell; the hot air branch pipe is arranged on one side of the cyclone shell, the interior of the cyclone shell has a spiral cyclone cavity, the spiral cyclone cavity has a spirally ascending spiral inclined surface, the air outlet cover seals the spiral cyclone cavity, the air outlet cover is provided with a plurality of air outlets along the circumference, and the air outlets are connected to the spiral cyclone cavity. Through the multiple jets and the disturbing effect of each jet on the surrounding air, each jet forms an annular rotating turbulent flow, thereby making the airflow on the top surface of the cyclone shell reach a turbulent state. When the annular rotating turbulent flow contacts the pole piece, due to the intense mixing of the fluid particles, it can be approximately considered that there is no heat transfer resistance, that is, there is basically no temperature difference in the turbulent state, which makes the heat transfer effect better.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of coating ovens, and in particular to a swirl air chamber and a swirl hot air coating oven. Background Art

[0002] Currently, most industrial lithium battery coating ovens use air knife nozzles. This means that hot air is ejected through a narrow slit, forming a linear jet that exchanges heat with the coating, heating it and achieving a drying effect. However, this method results in a largely laminar flow over the coating. In this laminar flow, the hot air molecules move in a roughly uniform direction, and only those near the coating surface participate in the heat exchange, resulting in poor convective heat transfer. Summary of the Invention

[0003] In order to overcome the problem of poor convective heat transfer effect during heat exchange described in the above background technology, the present invention provides a cyclone air chamber and a cyclone hot air coating oven.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A cyclone air chamber comprises: a cyclone shell, an air outlet cover and a hot air branch pipe for passing hot air into the cyclone shell;

[0006] The hot air branch pipe is arranged on one side of the cyclone shell. The interior of the cyclone shell is provided with a spiral cyclone chamber. The spiral cyclone chamber has a spirally ascending spiral inclined surface. The air outlet cover seals the spiral cyclone chamber. The air outlet cover is provided with multiple air outlets along the circumference, and the air outlets are communicated with the spiral cyclone chamber.

[0007] In one embodiment, an inclined buffer guide piece is connected to a side of the air outlet opposite to the airflow direction, and a slit is formed between the buffer guide piece and the air outlet cover.

[0008] In one embodiment, the inclination angle of the buffer guide piece is the same as the inclination angle of the spiral slope.

[0009] In one embodiment, the spiral angle of the spiral slope increases from the bottom to the top.

[0010] In one embodiment, the plurality of air outlets opened along the circumference of the air outlet cover constitute an air outlet group, the number of the air outlet group is set to at least one, and the air outlet groups are spaced apart from each other.

[0011] In one embodiment, a central column is provided in the spiral cyclone chamber, and the spiral inclined surface is provided around the outer circumferential surface of the central column.

[0012] In one embodiment, the central column is hollow.

[0013] In one embodiment, the cyclone shell is configured as a concentric cylinder, one side outer wall of the hot air branch tube is tangent to the outer wall of the cyclone shell, and the other side outer wall of the hot air branch tube is tangent to the outer wall of the center column, so that the hot air in the hot air branch tube enters the bottom end of the spiral slope along the tangential direction.

[0014] 8. The ventilator of claim 7, wherein the at least one air intake duct is connected to the at least one air intake duct of the box body, the at least one air intake duct extending along the length of the box body and the at least one air intake duct extending along the length of the box body.

[0015] Each of the bellows is provided with a plurality of cyclone air chambers, and the cyclone air chambers are all facing the electrode drying channel to dry the electrode, the hot air branch pipes are respectively arranged toward the ventilation direction of the hot air main channel, and the bellows are provided with a plurality of return air holes.

[0016] In one embodiment, a heat insulation layer is provided on the inner wall of the box body, and there is a distance between the heat insulation layer and the wind box.

[0017] Compared with the existing technology, the beneficial effect is that after the hot air is blown into the hot air branch pipe, the hot air enters the spiral cyclone cavity until it is ejected from each air outlet. Because the hot air spirals up in the spiral cyclone cavity, the hot air is ejected from each air outlet in an inclined direction, that is, the direction of the ejected hot air is always along the tangent direction of the circumference. Because the air outlets are distributed in an annular shape, the airflow formed by the hot air continuously changes along the annular direction. In this way, through the multiple jets and the disturbance of the surrounding air by each jet, each jet forms an annular rotating turbulent flow, which in turn makes the airflow on the top surface of the cyclone shell reach a turbulent state, thereby improving the heat transfer effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the swirl air chamber;

[0019] Figure 2 It is a cross-sectional view of the slit opening of the swirl air chamber;

[0020] Figure 3 Schematic diagram of the internal structure of the swirl air chamber;

[0021] Figure 4 This is a top view of the box body in the swirl hot air coating oven;

[0022] Figure 5 This is a front cross-sectional view of a swirl hot air coating oven;

[0023] Figure 6 It is a side cross-sectional view of a swirl hot air coating oven;

[0024] Figure 7 This is a structural diagram of a swirl air chamber with multiple air outlet groups.

[0025] 10. Cyclone air chamber; 20. Cyclone hot air coating oven; 100. Cyclone shell; 110. Spiral cyclone chamber; 111. Spiral slope; 112. Center column; 120. Baffle ring; 121. Return air hole; 200. Air outlet cover; 210. Air outlet; 220. Buffer guide plate; 230. Slit opening; 300. Hot air branch pipe; 400. Box body; 410. Pole drying channel; 420. Main air inlet channel; 430. Main hot air channel; 440. Main return air channel; 450. Return air channel; 460. Insulation layer; 500. Bellows; 510. Return air hole. DETAILED DESCRIPTION

[0026] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0027] The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating an orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0028] It should also be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, the specific relationship represented can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0030] Example 1:

[0031] like Figures 1 to 3 As shown, in this embodiment, a cyclone air chamber 10 includes: a cyclone shell 100, an air outlet cover 200 and a hot air branch pipe 300 for passing hot air into the interior of the cyclone shell 100; the hot air branch pipe 300 is arranged on one side of the cyclone shell 100, and the interior of the cyclone shell 100 has a spiral cyclone cavity 110, and the spiral cyclone cavity 110 has a spirally ascending spiral inclined surface 111, the air outlet cover 200 is arranged to seal the spiral cyclone cavity 110, and the air outlet cover 200 is provided with multiple air outlets 210 along the circumference, and the air outlets 210 are connected to the spiral cyclone cavity 110.

[0032] Specifically, the air outlet cover 200 is mounted on the cyclone housing 100. The hot air branch duct 300 has a hot air branch channel. The hot air branch duct 300 is interconnected with the spiral cyclone chamber 110. The bottom end of the spiral slope 111 is located at the bottom of the spiral cyclone chamber 110, and the bottom end of the spiral slope 111 is located corresponding to the hot air branch duct 300, so that the hot air in the hot air branch duct 300 can flow into the bottom end of the spiral slope 111. The top end of the spiral slope 111 is located adjacent to the air outlet cover 200. An opening is formed on the outer wall of the cyclone housing 100. One end of the hot air branch duct 300 is connected to the side wall of the opening, and the other end of the hot air branch duct 300 protrudes from the cyclone housing 100. A plurality of air outlets 210 are arranged in a circular array on the top surface of the air outlet cover 200. In this way, the hot air flows from the hot air branch pipe 300 into the bottom end of the spiral slope 111, and then flows along the bottom end of the spiral slope 111 to the top end of the spiral slope 111, so that the airflow formed by the hot air is concentrated into a beam on the spiral slope 111. The hot air forms a rotating flow in the spiral cyclone chamber 110, and its temperature and flow rate are more uniform, and is scattered from each air outlet 210 at the top end of the spiral slope 111.

[0033] It is worth noting that after the hot air is blown into the hot air branch pipe 300, the hot air enters the spiral cyclone chamber 110 until it is ejected from each air outlet 210. Because the hot air spirally rises in the spiral cyclone chamber 110, the ejection direction of the hot air is inclined when it is ejected from each air outlet 210, that is, the ejected hot air direction is always along the tangential direction of the circumference. Because each air outlet 210 is distributed in an annular shape, the airflow formed by the hot air continuously changes along the annular direction. In this way, through the multiple jets and the disturbance of the surrounding air by each jet, each jet forms an annular rotating turbulent flow, and then the airflow on the top surface of the cyclone shell 100 reaches a turbulent state. This makes the heat transfer effect better. And because the diffusion rate in the turbulent state is larger, most of the heat molecules participate in the convective heat exchange. The convective heat transfer coefficient in the turbulent state is larger than that in the laminar state, so that the convective heat transfer effect of the fluid is enhanced, which is manifested as high efficiency and more energy saving on a macro scale.

[0034] In order to facilitate the formation of annular rotating turbulence of hot air, such as Figure 1 and Figure 2 As shown, in this embodiment, an inclined buffer guide piece 220 is connected to the side of the air outlet 210 opposite to the air flow direction, and a slit opening 230 is formed between the buffer guide piece 220 and the air outlet cover 200 .

[0035] Specifically, the slit openings 230 are configured in the form of louvers. When hot air is ejected from the spiral cyclone chamber 110, it can flow out through the slit openings 230 and out along the direction of the buffer guide blades 220. By adjusting the inclination angle of each buffer guide blade 220, the formation of corresponding annular rotating turbulent flows can be adjusted for each jet.

[0036] Furthermore, the inclination angle of the buffer guide piece 220 is the same as the inclination angle of the spiral slope 111 .

[0037] Specifically, by setting the inclination angle of the buffer guide piece 220 to correspond to the inclination angle of the spiral bevel 111, the inclination angle of the buffer guide piece 220 and the ejection direction of the airflow are more unified, and the hot air can be ejected directly from each slit opening 230 from the top of the spiral bevel 111, thereby facilitating the formation of annular rotating turbulence while allowing the airflow to be ejected more evenly and with a larger jet volume, thereby effectively increasing the thermal molecular weight of the contact between the swirl air chamber 10 and the pole piece, and making the heat exchange effect better. It is effectively avoided that the jet volume is reduced due to the inclination angle of the buffer guide piece 220 being too small, and the loss of heat is effectively avoided. It can be understood that the inclination angle of the buffer guide piece 220 is approximately the same as the inclination angle of the spiral bevel 111.

[0038] In order to facilitate the airflow in the hot air branch pipe 200 to be ejected from the cyclone chamber 110 more evenly, as shown in FIG. Figures 1 to 3 As shown, in this embodiment, the spiral angle of the spiral slope 111 increases from the bottom to the top.

[0039] Specifically, by increasing the spiral angle, the spiral angle at the bottom of the spiral slope 111 is smaller than that at the top. Thus, the slope angle at the bottom of the spiral slope 111 is smaller, allowing the airflow from the hot air branch pipe 200 to better enter the bottom of the spiral slope 111. The slope angle at the top of the spiral slope 111 is larger, resulting in a smaller volume occupied by the airflow at the top of the spiral slope 111. The airflow at the top of the spiral slope 111 can be better concentrated into a beam and ejected from each slit opening 121. This facilitates the entry and exit of airflow.

[0040] In order to improve the drying effect of the cyclone air chamber 10, in this embodiment, the multiple air outlets 210 opened along the circumference of the air outlet cover 200 are an air outlet group. The number of air outlet groups is set to at least one, and the air outlet groups are arranged at intervals from each other.

[0041] Specifically, by providing multiple air outlet groups, air flow can be ejected from more air outlets 210 at the same time, thereby effectively increasing the jet flow rate and forming multiple annular rotating turbulences on the air outlet cover 200. In this way, the air flow exchange rate on the air outlet cover 200 is faster and the heat transfer effect is better.

[0042] like Figure 7 As shown, further, the number of air outlet groups is set to 2, the jet directions of the two air outlet groups are both clockwise, and the surface where the two air outlet groups are located is set as the air outlet surface, the cross-sectional shape of the air outlet surface is conical, and the two air outlet groups are respectively arranged on the inner cone wall and the outer cone wall of the air outlet surface.

[0043] In this way, annular rotating turbulence is generated by the two air outlet groups, and the jet direction of both air outlet groups is clockwise, thereby improving the airflow exchange rate. In addition, by setting the cross-sectional shape of the air outlet surface to an annular cone with an inner cone and an outer cone, the range of contact between the jet and the electrode is expanded, thereby expanding the drying range.

[0044] In order to increase the practicality of the cyclone housing 100, as Figures 1 to 3 As shown, in this embodiment, a central column 112 is provided in the spiral cyclone chamber 110 , and a spiral inclined surface 111 is provided around the outer circumferential surface of the central column 112 .

[0045] Specifically, a central column 112 is provided at the center of the spiral cyclone chamber 110. The inner wall of the spiral bevel 111 surrounds the outer circumferential surface of the central column 112, and the outer wall of the spiral bevel 111 is connected to the inner wall of the cyclone housing 100. When fluid enters the spiral cyclone chamber 110, the central column 112 is provided to reduce the volume of the spiral cyclone chamber 110, thereby effectively preventing the hot air fluid from being retained in the spiral cyclone chamber 110 for too long.

[0046] Furthermore, the central column 112 is hollow.

[0047] Furthermore, the cyclone shell 100 is configured as a concentric cylinder, and the outer wall of one side of the hot air branch pipe 300 is tangent to the outer wall of the cyclone shell 100, and the outer wall of the other side of the hot air branch pipe 300 is tangent to the outer wall of the center column 112, so that the hot air in the hot air branch pipe 300 enters the bottom end of the spiral slope 111 along the tangential direction.

[0048] Specifically, by configuring the cyclone housing 100 as a concentric cylinder, the shape of the cyclone housing 100 is more compatible with the distribution of the air outlets 210, and the fluid ejected from the air outlets 210 is more uniform, effectively ensuring that the flow rate and heat of the fluid ejected from the air outlets 210 are roughly the same. The spiral bevel 111 is arranged around the outer circumferential surface of the central column 112. By configuring the outer wall of one side of the hot air branch pipe 300 to be tangential to the outer circumferential surface of the cyclone housing 100, and the outer wall of the other side of the hot air branch pipe 300 to be tangential to the outer circumferential surface of the central column 112, the hot air can flow directly into the spiral cyclone chamber 110, and the path it needs to flow through to enter the spiral cyclone chamber 110 is shorter, that is, the hot air can better enter the spiral cyclone chamber 110. In this way, it is convenient for the hot air to pass into the interior of the cyclone housing 100, effectively increasing the practicality of the cyclone air chamber 10.

[0049] Furthermore, a baffle ring 120 is connected to the inner wall of the central column 112 , and a plurality of return air holes 121 are formed around the baffle ring 120 .

[0050] Specifically, by providing a retaining ring 120 on the inner circumferential surface of the center column 112, the overall strength of the center column 112 is increased, and when the bottom of the cyclone shell 100 faces the return air channel 450, part of the hot air can flow into the return air channel 450 at the bottom through the return air holes 121, thereby effectively increasing the practicality of the cyclone air chamber 10.

[0051] Example 2:

[0052] like Figures 4 to 6 As shown, in this embodiment, a swirl hot air coating oven 20 includes multiple swirl air chambers 10 in embodiment 1, and also includes: a box body 400, with openings respectively provided on the outer walls at both ends of the box body 400, and a pole piece drying channel 410 is formed between the openings at both ends. The interior of the box body 400 is symmetrically provided with air boxes 500 on opposite sides of the pole piece drying channel 410, and one end of each air box 500 is connected to a side wall of the box body 400, and a hot air main channel 430 for ventilation is formed between the peripheral outer wall of each air box 500 and the inner wall of the box body 400, and the top outer wall and the bottom outer wall of the box body 400 are respectively provided with inlets corresponding to the other ends of the two air boxes 500. The main air channel 420 is configured so that the air flow ejected from each main air inlet channel 420 can flow into the hot air main channel 430 from the other end of a bellows 500. The outer wall of each bellows 500 facing away from the electrode drying channel 410 and the inner wall of the box body 400 form a return air channel 450, and the top outer wall and the bottom outer wall of the box body 400 are respectively provided with a return air main channel 440 connected to the return air channel 450; each bellows 500 is provided with a plurality of swirl air chambers 10, and the swirl air chambers 10 are all facing the electrode drying channel 410 to dry the electrode, and the hot air branch pipes 300 are respectively arranged in the ventilation direction of the hot air main channel 430, and a plurality of return air holes 510 are provided on the bellows 500.

[0053] Specifically, the box body 400 is hollow, and the electrode drying channel 410 is used to dry the electrode; on the inner wall of the left end of the box body 400, there are air boxes 500 on both sides of the electrode drying channel 410. The air boxes 500 are in the shape of a cube. The air boxes 500 are connected to the inner wall of the left end of the box body 400. There is a distance between each air box 500 and the inner wall of the right end, the front end and the rear end of the box body 400. The main hot air channel 430 is located on the peripheral side of the air box 500, that is, the outer wall of each air box 500 is connected to the inner wall of the right end of the box body 400. The wall, the front inner wall and the rear inner wall form a main hot air channel 430, and the two main air inlet channels 420 are respectively connected to the external blowing device. The two main air inlet channels 420 are respectively arranged through the top outer wall and the bottom outer wall of the box body 400, and the two main air inlet channels 420 are opened at the right end of the box body 400, so that the hot air in the main air inlet channel 420 can be directly blown into the right end of the bellows 500, that is, directly into the hot air main channel 430, and flow evenly into the front and back sides of the bellows 500 from the right end of the bellows 500. Two main return air channels 440 are respectively arranged through the top outer wall and the bottom outer wall of the box body 400, and the two main return air channels 440 are both located in the middle of the box body 400. The return air channel 450 is located at the end of the bellows 500 away from the electrode drying channel 410, and the return air channel 450 is used to flow hot air into the main return air channel 440; each bellows 500 is provided with a plurality of mounting grooves on the side facing the electrode drying channel 410, and the shape of the mounting groove is adapted to the shape of the swirl air chamber 10, and each swirl air chamber 10 is installed in each mounting groove, and the top surface of each swirl air chamber 10 is arranged toward the electrode drying channel 410, and the return air holes 510 are correspondingly connected to the main return air channels 440, and the return air holes 510 are used to return part of the hot air in the hot air main channel 430 to the return air main channel 440.

[0054] It is worth noting that the air is blown into the two main air inlet channels 420 respectively, so that the hot air flows into the right end of the box 400 from the two main air inlet channels 420, and then enters the hot air main channels 430 respectively, and flows to the left end of the box 400 in the hot air main channels 430 respectively. During this period, the hot air in the two main hot air channels 430 flows into each hot air branch pipe 300 respectively, and then passes through each hot air branch pipe 300 to allow the hot air to pass into each spiral cyclone cavity 110, and flows from each hot air branch pipe 300 to the corresponding slit mouth 230 to be ejected, so that each swirl air chamber 10 forms a rotating turbulent flow. When the electrode enters the electrode drying channel 410, each swirl air chamber 10 on the two bellows 500 can dry the upper and lower surfaces of the electrode, and because each swirl air chamber 10 forms an annular rotating turbulent flow close to the electrode, the convective heat transfer effect between the electrode and the hot air is enhanced. During drying, hot air flows from the two main hot air channels 430 into the corresponding return air channels 450, and the remaining hot air flows into the return air channels 450 from the corresponding return air holes 510 and return air holes 121. In this way, the hot air can be combined from the corresponding return air channels 450 to the corresponding main return air channels 440 before being discharged, thus completing the drying step of the electrode. In this way, the turbulent flow created by the upper and lower air boxes 500 dries the electrode, making the drying effect of the swirl hot air coating oven 20 better.

[0055] Furthermore, a heat insulating layer 460 is provided on the inner wall of the box body 400 , and there is a distance between the heat insulating layer 460 and the bellows 500 .

[0056] Specifically, the heat insulation layer 460 is used to prevent the hot air from losing heat when flowing in the box body 400 .

[0057] Example 3:

[0058] This embodiment is similar to embodiment 1, except that: in this embodiment, the number of air outlet groups is set to 3, the jet directions of the two air outlet groups are both counterclockwise, and the surface where the two air outlet groups are located is set as the air outlet surface, and the cross-sectional shape of the air outlet surface is a plane.

[0059] Example 4:

[0060] This embodiment is similar to embodiment 1, except that: in this embodiment, the number of air outlet groups is set to 2, the jet directions of the two air outlet groups are clockwise and counterclockwise respectively, and the surfaces where the two air outlet groups are located are set as air outlet surfaces, the cross-sectional shape of the air outlet surface is conical, and the two air outlet groups are respectively arranged on the inner cone wall and the outer cone wall of the air outlet surface.

[0061] In this way, the different jet directions of the two air outlet groups make the turbulence effect better, thereby further improving the air flow exchange rate.

[0062] In the drawings of the above embodiments, the arrows point to the direction of hot air.

[0063] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A cyclone air chamber, characterized in that: include: A cyclone housing (100), an air outlet cover (200), and a hot air branch pipe (300) for passing hot air into the interior of the cyclone housing (100); The hot air branch pipe (300) is arranged on one side of the cyclone shell (100); the interior of the cyclone shell (100) is provided with a spiral cyclone chamber (110); the spiral cyclone chamber (110) is provided with a spirally ascending spiral inclined surface (111); the air outlet cover (200) is provided to seal the spiral cyclone chamber (110); the air outlet cover (200) is provided with a plurality of air outlets (210) along the circumferential direction; the air outlets (210) are communicated with the spiral cyclone chamber (110); an inclined buffer guide piece (220) is connected to the side of the air outlet (210) opposite to the air flow direction; a slit opening (230) is formed between the buffer guide piece (220) and the air outlet cover (200); The spiral angle of the spiral slope (111) increases from the bottom to the top; A central column (112) is provided in the spiral cyclone chamber (110), and the spiral inclined surface (111) is provided around the outer circumferential surface of the central column (112); The cyclone housing (100) is configured as a concentric cylinder, one side outer wall of the hot air branch pipe (300) is tangent to the outer wall of the cyclone housing (100), and the other side outer wall of the hot air branch pipe (300) is tangent to the outer wall of the central column (112), so that the hot air in the hot air branch pipe (300) enters the bottom end of the spiral inclined surface (111) along the tangential direction.

2. The cyclone chamber according to claim 1, characterized in that: The inclination angle of the buffer guide piece (220) is the same as the inclination angle of the spiral inclined surface (111).

3. The cyclone chamber according to claim 1, characterized in that: The plurality of air outlets (210) opened along the circumference of the air outlet cover (200) constitute an air outlet group, the number of the air outlet groups is set to at least one, and the air outlet groups are spaced apart from each other.

4. The cyclone chamber according to claim 1, characterized in that: The central column (112) is hollow.

5. A swirl hot air coating oven, comprising the swirl air chamber (10) according to any one of claims 1 to 4, characterized in that: Also includes: The box (400) is provided with openings on the outer walls at both ends of the box (400), and a pole piece drying channel (410) is formed between the openings at both ends. The interior of the box (400) is symmetrically provided with air boxes (500) on opposite sides of the pole piece drying channel (410), and one end of each of the air boxes (500) is connected to a side wall of the box (400), and a hot air main channel (430) for ventilation is formed between the outer wall of each of the air boxes (500) and the inner wall of the box (400). The top outer wall and the bottom outer wall of the box (400) are connected to the inner wall of the box (400). The wall is respectively provided with an air inlet main channel (420) corresponding to the other end of the two wind boxes (500), so that the air flow ejected from each of the air inlet main channels (420) can flow into the hot air main channel (430) from the other end of one of the wind boxes (500), and the outer wall of each of the wind boxes (500) facing away from the electrode drying channel (410) forms a return air channel (450) with the inner wall of the box body (400), and the top outer wall and the bottom outer wall of the box body (400) are respectively provided with a return air main channel (440) connected to the return air channel (450); Each of the wind boxes (500) is provided with a plurality of cyclone air chambers (10), and the cyclone air chambers (10) are all directly facing the electrode drying channel (410) to dry the electrode, the hot air branch pipes (300) are respectively arranged in the ventilation direction of the hot air main channel (430), and the wind box (500) is provided with a plurality of return air holes (510).

6. The swirl hot air coating oven according to claim 5, characterized in that: A heat insulating layer (460) is provided on the inner wall of the box body (400), and a distance exists between the heat insulating layer (460) and the wind box (500).

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