Totally-closed water cooling and heating circulating fan

Abstract

An impeller is sleeved on the extending outer end of a main shaft of a motor, a front end cover is covered on the end face, close to the impeller, of a motor shell, a rear end cover is covered on the other end face of the motor shell, and a first cold water cavity is arranged in the side wall of the front end cover around the circumference. A first water inlet is formed in one side of the first cold water cavity, a first water outlet is formed in the other side of the first cold water cavity, a second cold water cavity is formed in the side wall of the motor shell around the circumference, a second water inlet is formed in one end, close to the front end cover, of the second cold water cavity, and a second water outlet is formed in one end, close to the rear end cover, of the second cold water cavity. The cooling structure of the motor is a fully-closed water cooling structure, the structure is compact, the cooling effect is good after cooling water is introduced, and compared with a traditional air cooling motor, water has high heat conduction performance and can rapidly take away heat generated in the motor, so that the temperature of the motor is effectively reduced, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal circulation fan technology, specifically to a fully enclosed water-cooled thermal circulation fan. Background Technology

[0002] In the heat treatment industry, such as annealing furnaces, hot air circulating fans are used to effectively improve the uniformity of the furnace temperature and thus improve the heat treatment quality of products. Due to the proximity to the high-temperature working environment, ventilation and cooling are achieved by the aluminum impeller inside the fan motor, which can only meet the general requirements for hot air stirring. The internal working temperature of the annealing furnace is below 800℃, and the internal components of the motor are easily damaged by heat, resulting in a short service life and unstable operation of general hot air circulating fans, leading to low heat treatment quality of products. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fully enclosed water-cooled hot air circulation fan to solve the problem that the motor of the hot air circulation fan has poor cooling effect at high operating temperatures, which affects the service life of the hot air circulation fan.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A fully enclosed water-cooled hot air circulating fan includes a motor, a main shaft extending from a motor housing, an impeller fitted onto the extended end of the main shaft, a stator connected to the inner wall of the motor housing, a rotor fitted onto the main shaft within the stator cavity, a front cover covering the end face of the motor housing near the impeller, and a rear cover covering the other end face of the motor housing, the middle part of the main shaft being mounted inside the front cover via a front bearing, and the other end of the main shaft being mounted inside the rear cover via a rear bearing, a first cold water chamber being circumferentially arranged within the side wall of the front cover, a first water inlet being provided on one side of the first cold water chamber, and a first water outlet being provided on the other side of the first cold water chamber, a second cold water chamber being circumferentially arranged within the side wall of the motor housing, a second water inlet being provided at the end of the second cold water chamber near the front cover, and a second water outlet being provided at the end of the second cold water chamber near the rear cover.

[0006] In a preferred embodiment, the first cold water chamber is connected to the second cold water chamber.

[0007] As a preferred embodiment, the first outlet is connected to the second inlet via an outer water pipe.

[0008] As a preferred embodiment, the side of the impeller closest to the motor is a base plate, and blades are evenly distributed on the end face of the base plate away from the motor near the circumference. The side of the blades away from the base plate is connected to the side of the annular front plate. An annular middle plate is also provided between the base plate and the front plate. The middle plate is located in the middle of the blades, and the side of the impeller away from the base plate is the air inlet along the axial direction.

[0009] As a preferred embodiment, a motor junction box connected to the interior is provided on the outer wall of the motor housing.

[0010] As a preferred embodiment, the end face of the front cover facing the impeller is covered with a dust cover.

[0011] The beneficial effects of this utility model are as follows: The motor's cooling structure adopts a fully enclosed water-cooled structure. Surrounding cavities are respectively set in the front cover and the side wall of the motor housing, serving as the first and second cold water chambers. The first and second cold water chambers are connected by a water pipe, resulting in a compact structure and excellent cooling effect after the cooling water is introduced. Compared with traditional air-cooled motors, water has higher thermal conductivity, which can quickly remove the heat generated inside the motor, thereby effectively reducing the motor temperature and improving heat dissipation efficiency. A dust cover is added to the end of the water-cooled motor near the impeller to prevent external impurities from entering the rotor and bearings on the motor's main shaft. The fully enclosed structure of the motor reduces internal contamination and better meets the requirements for furnace temperature uniformity under various conditions. Moreover, the water-cooling system helps maintain a stable internal temperature of the motor, avoiding performance degradation or damage due to overheating, thus extending the motor's service life. The water-cooled motor has high efficiency and low starting current when running at low speeds, saving energy. Simultaneously, the cooling water can be recycled, reducing resource waste and production energy consumption. Attached Figure Description

[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 This is a front view of the present invention;

[0014] Figure 2 for Figure 1 A sectional view;

[0015] Figures 1-2 Explanation of reference numerals in the attached diagram: 1. Motor; 2. First water inlet; 3. Dust cover; 4. Main shaft; 5. Impeller; 6. First water outlet; 7. Second water inlet; 8. Water pipe; 9. Second water outlet; 10. Motor junction box; 11. Second cold water chamber; 12. First cold water chamber; 13. Front bearing; 14. Rear bearing; 15. Stator; 16. Rotor; 17. Motor housing; 18. Front end cover; 19. Rear end cover; 51. Base plate; 52. Middle plate; 53. Front plate; 54. Blade; 55. Air inlet. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0017] This utility model describes a fully enclosed water-cooled hot air circulation fan. (See also...) Figures 1-2 As shown, the device includes a motor 1, a main shaft 4 extending from a motor housing 17, an impeller 5 mounted on the extended outer end of the main shaft 4, a stator 15 connected to the inner wall of the motor housing 17, a rotor 16 mounted on the main shaft 4 within the inner cavity of the stator 15, a front end cover 18 covering the end face of the motor housing 17 near the impeller 5, and a rear end cover 19 covering the other end face of the motor housing 17. The middle part of the main shaft 4 is located inside the front end cover 18 via a front bearing 13, and the other end of the main shaft 4 is located away from the impeller 5. The end is set inside the rear end cover 19 via the rear bearing 14. The front end cover 18 has a first cold water chamber 12 arranged circumferentially on the side wall. The first cold water chamber 12 has a first water inlet 2 on one side and a first water outlet 6 on the other side. The motor housing 17 has a second cold water chamber 11 arranged circumferentially on the side wall. The second cold water chamber 11 has a second water inlet 7 at the end near the front end cover 18 and a second water outlet 9 at the end near the rear end cover 19.

[0018] Specifically, the front cover 18 and the motor housing 17 have a jacketed structure, with the first cold water chamber 12 and the second cold water chamber 11 set in the inner wall as a cooling structure for introducing cooling water. The structure is compact and the overall volume does not change significantly. The cooling water passes through the inner cavity of the motor housing 17 and the front cover 18, with a large contact area and good cooling effect. The front bearing 13 is close to the impeller 5 and is close to the annealing furnace, so the temperature is high and it is easy to be damaged, which will affect the operation of the motor 1. By setting the first cold water chamber 12 inside the front cover 18 that fixes the front bearing 13, the steel front cover 18 conducts heat quickly and has a good cooling effect on the front bearing 13. The second cold water chamber 11 is set on the motor housing 17 to cool the working stator 15 and the motor 1 assembly inside the motor housing 17, ensuring the operating effect.

[0019] In this embodiment, the first cold water chamber 12 is connected to the second cold water chamber 11. This makes the overall structure compact, and the cooling water circulation between the two chambers of the first cold water chamber 12 and the second cold water chamber 11 can be realized by connecting them to a set of inlet and outlet water pipes.

[0020] In this embodiment, the first outlet 6 is connected to the second inlet 7 via an outer water pipe 8. For ease of connection, disassembly, and maintenance, the sides of the first cold water chamber 12 and the second cold water chamber 11 are respectively provided with inlet and outlet ports, which can communicate with external cooling water. Alternatively, the first cold water chamber 12 and the second cold water chamber 11 can be connected via the water pipe 8, allowing them to communicate. The first inlet 2 of the first cold water chamber 12 is connected to the inlet of the cooling water, and the second outlet 9 of the second cold water chamber 11 is connected to the return end of the cooling water, thus realizing the flow of cooling water in the first cold water chamber 12 and the second cold water chamber 11.

[0021] In this embodiment, the impeller 5 has a base plate 51 on the side closest to the motor 1. Blades 54 are evenly distributed on the end face of the base plate 51 away from the motor 1, near the circumference. The side of the blades 54 away from the base plate 51 is connected to the side of the annular front disc 53. An annular middle disc 52 is also provided between the base plate 51 and the front disc 53, located in the middle of the blades 54. The side of the impeller 5 away from the base plate 51 has an air inlet 55 along the axial direction. The addition of the middle disc 52 between the base plate 51 and the front disc 53 increases the overall strength of the impeller 5.

[0022] In this embodiment, a motor junction box 10 connected to the interior is provided on the outer side wall of the motor housing 17.

[0023] In this embodiment, a dust cover 3 is provided on the end face of the front cover 18 facing the impeller 5. A dust cover 3 is added to the outer end of the front cover 18 of the motor 1 to prevent external liquids and impurities from entering the interior of the motor 1 and contaminating the rotor 16 on the main shaft 4. It can also protect and extend the life of the front bearing 13.

[0024] The working process of this utility model is as follows:

[0025] As shown in Figure 1-2, firstly, the flange edge of the circumferential end face of the front cover 18 of the motor 1 is fixed to the outer wall of the annealing furnace. The impeller 5 is inserted into the annealing furnace. The internal working temperature of the annealing furnace is below 800℃. Then, the first water inlet 2 is connected to the water inlet of the cooling water, and the second water outlet 9 is connected to the water return of the cooling water. Finally, the motor 1 is started, driving the impeller 5 to rotate, so that the air inside the annealing furnace flows.

[0026] The above embodiments are merely illustrative of the principles and effects of this utility model, as well as some of its applications, and are not intended to limit this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A fully enclosed water-cooled hot air circulation fan, comprising: The motor (1) has a main shaft (4) extending from the motor housing (17). An impeller (5) is fitted onto the extended outer end of the main shaft (4). A stator (15) is connected to the inner wall of the motor housing (17). A rotor (16) is fitted onto the main shaft (4) inside the stator (15). The motor housing (17) is characterized by having a front end cover (18) covering the end face of the motor housing (17) near the impeller (5), and a rear end cover (19) covering the other end face of the motor housing (17). The middle part of the main shaft (4) is located inside the front end cover (18) via a front bearing (13). The main shaft (4) is located away from the impeller (5). 5) The other end is set inside the rear end cover (19) via the rear bearing (14). The side wall of the front end cover (18) is provided with a first cold water chamber (12) around the circumference. The first cold water chamber (12) is provided with a first water inlet (2) on one side and a first water outlet (6) on the other side. The side wall of the motor housing (17) is provided with a second cold water chamber (11) around the circumference. The second cold water chamber (11) is provided with a second water inlet (7) at one end near the front end cover (18) and a second water outlet (9) at one end near the rear end cover (19).

2. The fully enclosed water-cooled hot air circulating fan according to claim 1, characterized in that, The first cold water chamber (12) is connected to the second cold water chamber (11).

3. The fully enclosed water-cooled hot air circulating fan according to claim 2, characterized in that, The first outlet (6) is connected to the second inlet (7) through the outer water pipe (8).

4. The fully enclosed water-cooled hot air circulating fan according to claim 1, 2, or 3, characterized in that, The impeller (5) has a base plate (51) on the side closest to the motor (1). Blades (54) are evenly distributed on the end face of the base plate (51) away from the motor (1) near the circumference. The side of the blades (54) away from the base plate (51) is connected to the side of the annular front plate (53). An annular middle plate (52) is also provided between the base plate (51) and the front plate (53). The middle plate (52) is located in the middle of the blades (54). The side of the impeller (5) away from the base plate (51) is an air inlet (55) along the axial direction.

5. The fully enclosed water-cooled hot air circulating fan according to claim 1, 2, or 3, characterized in that, A motor junction box (10) connected to the interior is provided on the outer wall of the motor housing (17).

6. The fully enclosed water-cooled hot air circulating fan according to claim 1, 2, or 3, characterized in that, The end face of the front cover (18) facing the impeller (5) is covered with a dust cover (3).

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