High-temperature fan bearing cooling structure

Abstract

The utility model relates to the technical field of high-temperature fan cooling, and particularly discloses a high-temperature fan bearing cooling structure which comprises a bearing machine base shell, bases are arranged at the bottom of the bearing machine base shell, a filtering bin assembly used for filtering lubricating oil is installed between the two bases, a connecting shaft is installed in the bearing machine base shell, and the connecting shaft is connected with the bearing machine base shell. An oil outlet pipe used for discharging oil is arranged above the filtering bin assembly, a connecting opening is formed in the connecting position of the top of the oil outlet pipe and the bearing machine base shell, an oil inlet assembly used for cooling is arranged on the bearing machine base shell, and a connector is arranged between the oil inlet assembly and the bearing machine base shell; and the oil inlet assembly communicates with the bottom of the filtering bin assembly, and sealing sleeves used for sealing the bearing and the connecting shaft are installed at the left end and the right end of the bearing machine base shell correspondingly. According to the utility model, the bearing base can be directly cooled through the circularly flowing lubricating oil without worrying that the normal use is influenced by the generation of condensed water.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature fan cooling, in particular to a bearing cooling structure for a high-temperature fan. Background Art

[0002] A high-temperature fan mainly consists of parts such as a fan main body, a motor, a transmission system, and a sealing system. The main components of a high-temperature fan, such as the motor, bearings, impellers, etc., have certain working temperature limits. When the fan operates in a high-temperature environment for a long time, the temperatures of these components will continuously rise. If it exceeds their tolerance range, it may lead to a decline in material properties, lubrication failure, increased component wear, and even cause failures or damages. The temperature of these components can be effectively controlled through a cooling structure to protect the equipment from high-temperature damage.

[0003] As in the existing publicly disclosed technical solution, the patent number CN218522853U discloses a bearing cooling structure for a high-temperature fan, which includes a bearing box. A cooling water tank is arranged on the top of the bearing box. The cooling water tank is connected to the bearing box through a support rod. Heat dissipation fins and cooling pipes are arranged inside the bearing box. The water inlet and outlet of the cooling pipe both pass through the top of the bearing box. A water pump is arranged on the top of the bearing box. The water suction port of the water pump is connected to the water outlet of the cooling pipe through a water pipe. The water outlet of the water pump is connected to the water inlet of the cooling water tank through a water pipe. The water inlet of the cooling pipe is connected to the flowing water port of the cooling water tank through a communicating pipe. A refrigerating sheet is arranged inside the cooling water tank. A controller is arranged on one side of the cooling water tank. The internal part of the bearing box is dissipated by water cooling, improving the heat dissipation effect.

[0004] When the above technical solution is actually implemented, since the cooling pipe is spirally arranged inside the bearing box, when the temperature difference between the inside and outside of the cooling pipe is relatively large, there will be a certain amount of condensed water on the cooling pipe wall. This part of the condensed water exists inside the bearing box and will affect the normal use of the bearing box. Summary of the Invention

[0005] The purpose of the utility model is to provide a bearing cooling structure for a high-temperature fan, which can directly cool and lower the temperature of the bearing seat through circulating lubricating oil, without worrying about the generation of condensed water affecting normal use, so as to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical solutions: A high-temperature fan bearing cooling structure, including a bearing housing shell, a base is provided at the bottom of the bearing housing shell, and a filter chamber assembly for filtering lubricating oil is installed between two groups of bases. A connecting shaft is installed inside the bearing housing shell. An oil outlet pipe for oil outlet is provided above the filter chamber assembly, and an interface is provided at the connection between the top of the oil outlet pipe and the bearing housing shell. An oil inlet assembly for cooling is provided on the bearing housing shell, and a connection head is provided between the oil inlet assembly and the bearing housing shell. The oil inlet assembly is in communication with the bottom of the filter chamber assembly. Sealing sleeves for sealing the bearing and the connecting shaft are installed at both the left and right ends of the bearing housing shell.

[0007] Preferably, heat dissipation copper rings sleeved outside the bearing housing shell are provided on both the front and back sides of the connection head, and the heat dissipation copper rings are welded on the surface of the bearing housing shell.

[0008] Preferably, the filter chamber assembly includes a filter chamber main body fixed on the base. A first filter layer is provided inside the filter chamber main body, and a second filter layer is provided below the first filter layer.

[0009] Preferably, the first filter layer is a metal filter net, and the second filter layer is a cellulose filter net.

[0010] Preferably, the oil inlet assembly includes an oil inlet pipe, and an oil pump is provided on the oil inlet pipe. The oil inlet pipe penetrates through the inside of the bearing housing shell and is connected to an annular pipe, and a connecting pipe is installed between the annular pipes.

[0011] Preferably, the annular pipe is fixed to the inner wall of the bearing housing shell through a bracket, and a plurality of oil outlet openings evenly distributed at equal intervals are provided on the inner wall of the annular pipe.

[0012] Preferably, the annular pipe is in communication with the filter chamber main body through a connecting pipe, an oil inlet pipe, and an oil pump, and the bearing housing shell is in communication with the filter chamber main body through an interface and an oil outlet pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By arranging the filtered lubricating oil stored in the filter chamber assembly, the lubricating oil can enter the inside of the bearing housing shell through the oil inlet assembly. After the lubricating oil enters the inside of the bearing housing shell, it cools the inside of the bearing housing shell and cleans the inside of the bearing housing shell, maintaining the normal rotation of the internal bearing, and there is no need to worry about the condensate water generated by using cooling water to cool damaging the normal use of the bearing inside the bearing housing shell;

[0015] 2. The secondary filtration of the lubricating oil is achieved through the metal filter screen of the first filter layer and the cellulose filter screen of the second filter layer. After filtration, the lubricating oil reaches below the second filter layer and can flow back into the annular pipe through the oil inlet pipe at the bottom of the filter chamber main body to realize the circulating flow of the lubricating oil. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is the overall structure view of the present invention;

[0018] Figure 2 It is the structural schematic diagram of the oil inlet assembly of the present invention;

[0019] Figure 3 It is the half-sectional structural schematic diagram of the bearing housing of the present invention;

[0020] Figure 4 It is the half-sectional structural schematic diagram of the filter chamber assembly of the present invention.

[0021] Description of the Reference Numerals:

[0022] 1. Bearing housing; 2. Filter chamber assembly; 201. Filter chamber main body; 202. First filter layer; 203. Second filter layer; 3. Oil outlet pipe; 4. Oil inlet assembly; 401. Oil inlet pipe; 402. Connecting pipe; 403. Annular pipe; 5. Connector; 6. Heat dissipation copper ring; 7. Sealing sleeve; 8. Interface. Specific Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] The present invention provides a technical solution:

[0025] Please refer to Figure 1 and Figure 3, A high-temperature fan bearing cooling structure, including a bearing housing shell 1. A base is provided at the bottom of the bearing housing shell 1, and a filter chamber assembly 2 for filtering lubricating oil is installed between the two groups of bases. A connecting shaft is installed inside the bearing housing shell 1. An oil outlet pipe 3 for oil outlet is provided above the filter chamber assembly 2, and an interface 8 is provided at the connection between the top of the oil outlet pipe 3 and the bearing housing shell 1. An oil inlet assembly 4 for cooling is provided on the bearing housing shell 1, and a connector 5 is provided between the oil inlet assembly 4 and the bearing housing shell 1. The oil inlet assembly 4 is in communication with the bottom of the filter chamber assembly 2. Sealing sleeves 7 for sealing the bearing and the connecting shaft are installed at both the left and right ends of the bearing housing shell 1. Heat dissipation copper rings 6 sleeved outside the bearing housing shell 1 are provided on both the front and back sides of the connector 5, and the heat dissipation copper rings 6 are welded on the surface of the bearing housing shell 1.

[0026] By adopting the above technical solution, the filtered lubricating oil is stored in the filter chamber assembly 2. The lubricating oil can enter the inside of the bearing housing shell 1 through the oil inlet assembly 4. Both ends of the bearing housing shell 1 are sealed by the sealing sleeves 7 to prevent the lubricating oil from leaking through the sealing sleeves 7. After the lubricating oil enters the inside of the bearing housing shell 1, it can cool the inside of the bearing housing shell 1 and clean the inside of the bearing housing shell 1 to keep the internal bearing rotating normally. The middle of the bottom of the bearing housing shell 1 is lower. Under the action of gravity, the lubricating oil can re-enter the oil outlet pipe 3 through the interface 8 and enter the filter chamber assembly 2 through the oil outlet pipe 3 for filtration. Thus, the bearing housing shell 1 is cooled and cooled by the circulating flow of the lubricating oil. At the same time, the heat of the bearing housing shell 1 can also be quickly conducted to the outside through the heat dissipation copper rings 6, realizing double cooling of the bearing housing shell 1, and there is no need to worry about the condensate generated by using cooling water to cool damaging the normal use of the bearing inside the bearing housing shell 1.

[0027] Specifically, as Figures 2 to 4 shown, the filter chamber assembly 2 includes a filter chamber main body 201 fixed on the base. A first filter layer 202 is provided inside the filter chamber main body 201, and a second filter layer 203 is provided below the first filter layer 202. The first filter layer 202 is a metal filter screen, and the second filter layer 203 is a cellulose filter screen;

[0028] The oil inlet assembly 4 includes an oil inlet pipe 401, and an oil pump is arranged on the oil inlet pipe 401. The oil inlet pipe 401 penetrates through the inside of the bearing housing 1 and is connected with an annular pipe 403. A connecting pipe 402 is installed between the annular pipes 403. The annular pipe 403 is fixed to the inner wall of the bearing housing 1 through a bracket, and a number of equally spaced and uniformly distributed oil outlets are provided on the inner wall of the annular pipe 403. The annular pipe 403 is interconnected with the filter chamber main body 201 through the connecting pipe 402, the oil inlet pipe 401, and the oil pump, and the bearing housing 1 is interconnected with the filter chamber main body 201 through the interface 8 and the oil outlet pipe 3.

[0029] By adopting the above technical solution, the lubricating oil entering the filter chamber main body 201 is first preliminarily filtered by the metal filter screen of the first filter layer 202, and then secondary filtered by the cellulose filter screen of the second filter layer 203. The filtered lubricating oil reaches below the second filter layer 203 and can flow back into the annular pipe 403 through the oil inlet pipe 401 at the bottom of the filter chamber main body 201. When the oil pump works, the lubricating oil can flow into the annular pipe 403 from the oil inlet pipe 401 at the bottom of the filter chamber main body 201, and the oil circuit is connected through the connecting pipe 402 between the annular pipes 403. Finally, it enters the inside of the bearing housing 1 through the oil outlets on the inner wall of the annular pipe 403 to realize the heat dissipation of the bearing housing 1.

[0030] Working principle: Start the oil pump. The lubricating oil can flow into the annular pipe 403 from the oil inlet pipe 401 at the bottom of the filter chamber main body 201, and the oil circuit is connected through the connecting pipe 402 between the annular pipes 403. Finally, it enters the inside of the bearing housing 1 through the oil outlets on the inner wall of the annular pipe 403. The middle of the bottom of the bearing housing 1 is lower. Under the action of gravity, the lubricating oil can re-enter the oil outlet pipe 3 through the interface 8, enter the filter chamber assembly 2 through the oil outlet pipe 3, and is first preliminarily filtered by the metal filter screen of the first filter layer 202, and then secondary filtered by the cellulose filter screen of the second filter layer 203. The filtered lubricating oil reaches below the second filter layer 203, so as to cool down the bearing housing 1 through the circulating flow of the lubricating oil. At the same time, the heat of the bearing housing 1 can also be quickly conducted to the outside through the heat dissipation copper ring 6, realizing double cooling of the bearing housing 1, and there is no need to worry about the damage to the normal use of the bearings in the bearing housing 1 caused by the condensed water generated by using cooling water for cooling.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-temperature fan bearing cooling structure, comprising a bearing housing (1), characterized in that: A base is provided at the bottom of the bearing base housing (1), and a filter bin assembly (2) for filtering lubricating oil is installed between two groups of bases. A connecting shaft is installed inside the bearing base housing (1). An oil outlet pipe (3) for discharging oil is provided above the filter bin assembly (2), and a connection port (8) is provided at the connection between the top of the oil outlet pipe (3) and the bearing base housing (1). An oil inlet assembly (4) for cooling is provided on the bearing base housing (1), and a connector (5) is provided between the oil inlet assembly (4) and the bearing base housing (1), and the oil inlet assembly (4) and the bottom of the filter bin assembly (2) are connected to each other. Sealing sleeves (7) for sealing the bearing and the connecting shaft are installed at both left and right ends of the bearing base housing (1).

2. A high temperature fan bearing cooling structure according to claim 1, characterized in that: Both the front and rear sides of the connector (5) are provided with heat dissipation copper rings (6) sleeved on the outside of the bearing base housing (1), and the heat dissipation copper rings (6) are welded to the surface of the bearing base housing (1).

3. A high temperature fan bearing cooling structure according to claim 1, characterized in that: The filter bin assembly (2) comprises a filter bin main body (201) fixed on a base, a first filter layer (202) being arranged inside the filter bin main body (201), and a second filter layer (203) being arranged below the first filter layer (202).

4. A high temperature fan bearing cooling structure according to claim 3, characterized in that: The first filter layer (202) is a metal filter mesh, and the second filter layer (203) is a cellulose filter mesh.

5. A high temperature fan bearing cooling structure according to claim 3, characterized in that: The oil inlet assembly (4) comprises an oil inlet pipe (401), and an oil pump is arranged on the oil inlet pipe (401). The oil inlet pipe (401) runs through the interior of the bearing base housing (1) and is connected to an annular pipe (403), and a connecting pipe (402) is installed between the annular pipes (403).

6. A high temperature fan bearing cooling structure according to claim 5, characterized in that: The annular tube (403) is fixed to the inner wall of the bearing base housing (1) via a bracket, and the inner wall of the annular tube (403) is provided with a plurality of oil outlets that are evenly distributed at equal distances.

7. A high temperature fan bearing cooling structure according to claim 5, characterized in that: The annular tube (403) is interconnected with the filter bin body (201) via the connecting tube (402), the oil inlet pipe (401) and the oil pump, and the bearing base housing (1) is interconnected with the filter bin body (201) via the connecting port (8) and the oil outlet pipe (3).

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