Integrated explosion-proof variable frequency motor

Abstract

The utility model belongs to motor technical field, concretely relates to an integrated anti -explosion frequency conversion motor, including motor main part, and motor main part includes the casing, is equipped with stator structure and rotor structure in the casing, the top of casing is provided with the explosion -proof chamber, is provided with frequency conversion chamber in the explosion -proof chamber, is provided with frequency conversion module in the frequency conversion chamber, the explosion -proof chamber is enclosed by a piece of top plate, a piece of bottom plate and four side plates and is closed to form, the lower part of frequency conversion module is provided with water -cooling groove, water -cooling groove is connected with two water -cooling pipelines, the inside of casing is provided with cooling cavity, cooling cavity is linked with cooling water tank through water -cooling pipeline. The casing is cylindrical, including cooling part and mounting part, the cooling part includes inner casing and outer casing, the cooling cavity is clamped between the inner casing and the outer casing, the outer surface of the inner casing is provided with a plurality of first water channel plates and second water channel plates along the circumferential direction.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to an integrated explosion-proof variable frequency motor. Background Technology

[0002] Explosion-proof motors are special motors designed for flammable and explosive environments (such as underground coal mines, petrochemical workshops, dusty workshops, etc.). Their core function is to prevent sparks, arcs, or high temperatures generated during operation from igniting the surrounding explosive gases / dust, thereby ensuring production safety.

[0003] Currently, traditional methods typically rely on heat radiation from the motor casing and natural air convection for cooling, or on active cooling by adding a fan. However, natural cooling is extremely inefficient and only suitable for low-power, low-load applications. When the ambient temperature is too high or the air circulation is poor, the motor is prone to overheating. Fan cooling methods are prone to dust accumulation on the fan (especially in open air ducts), and the airflow decreases after long-term operation. The "sealing requirements" of explosion-proof enclosures limit the air duct design, resulting in uneven cooling. Utility Model Content

[0004] This utility model discloses an integrated explosion-proof variable frequency motor, which mainly solves the problem of poor heat dissipation effect of current traditional motors.

[0005] To achieve the aforementioned objective, this utility model provides an integrated explosion-proof variable frequency motor, comprising a motor body, which includes a housing. The housing contains a stator structure and a rotor structure. An explosion-proof chamber is located at the top of the housing, and a variable frequency cavity is located within the explosion-proof chamber. A variable frequency module is located within the variable frequency cavity. The explosion-proof chamber is enclosed by a top plate, a bottom plate, and four side plates. A water-cooling tank is located below the variable frequency module, and the water-cooling tank is connected to two water-cooling pipes. A cooling chamber is located inside the housing, and the cooling chamber is connected to the water-cooling tank via water-cooling pipes.

[0006] Preferably, the shell is cylindrical and includes a cooling section and a mounting section. The cooling section includes an inner shell and an outer shell. The cooling cavity is sandwiched between the inner shell and the outer shell. The outer surface of the inner shell is provided with a plurality of first water channel plates and second water channel plates at intervals along the circumferential direction of the cylinder, wherein adjacent first water channel plates and second water channel plates form a water cooling channel.

[0007] Preferably, the cooling cavity is further provided with a first water-cooling blocking plate and a second water-cooling blocking plate. The first water-cooling blocking plate is located between the two water-cooling pipes. Two water nozzle connectors are provided on one side of the outer shell. The water nozzle connectors are connected to the cooling cavity. The second water-cooling blocking plate is provided between the two water nozzle connectors.

[0008] Preferably, the frequency conversion module includes a power unit, a DSP control chip, a capacitor, and an optical fiber communication module, and the top of the water-cooling tank is provided with a sealing plate for sealing the water-cooling tank.

[0009] Preferably, the rotor structure includes a rotating shaft rotatably disposed within the housing, with an upper bearing and a lower bearing respectively disposed at both ends of the rotating shaft.

[0010] Preferably, a warning sign and safety markings are provided on the top of the housing, and a handle is provided on one side of the top of the top plate.

[0011] Preferably, the bottom of the explosion-proof chamber is further provided with a horn assembly, which includes a horn assembly A and a horn assembly B.

[0012] Preferably, a wiring cavity is also provided on the side of the frequency conversion cavity, and a communication device is provided between the wiring cavity and the frequency conversion cavity. Through holes are opened in the horn mouth A component and the horn mouth B component, and the through holes are connected to the wiring cavity.

[0013] Preferably, the top plate, bottom plate, and side plate are explosion-proof plates, and the side plate is connected to the top plate by bolts.

[0014] Preferably, one side of the top plate is hinged to the side plate, and a sealing ring is also provided between the top plate and the side plate.

[0015] The technical solution provided by this utility model has at least the following technical effects: During use, this invention uses circulating coolant to flow through the circulation channel inside the housing, directly removing heat from the housing and frequency converter cavity. The heat is then carried out of the housing through the water nozzle interface, thereby reducing the motor temperature. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the present utility model; Figure 2 This is a structural schematic diagram from another angle of an embodiment of the present utility model; Figure 3 This is a structural schematic diagram from another angle of an embodiment of the present utility model; Figure 4This is a schematic diagram of the internal structure of the shell after removing the outer shell in an embodiment of the present invention; Figure 5 This is a schematic diagram of the shell structure of this utility model embodiment, excluding the outer shell and side plates; Key reference numerals in the attached drawings: 10. Housing; 11. Shaft; 110. Upper bearing; 111. Lower bearing; 12. Cooling section; 121. Inner housing; 1211. First water channel plate; 1212. Second water channel plate; 1213. Water nozzle connector; 1214. First water-cooling blocking plate; 1215. Second water-cooling blocking plate; 13. Mounting section; 20. Explosion-proof chamber; 21. Frequency conversion chamber; 210. Frequency conversion module; 211. Capacitor; 22. Wiring chamber; 23. Handle; 24. Top plate; 241. Bottom plate; 2411. Water-cooling tank; 242. Water-cooling pipe; 25. Horn mouth A assembly; 26. Horn mouth B assembly; 27. Connecting device; Detailed Implementation The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0018] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] Please refer to Figures 1-5This utility model provides an integrated explosion-proof variable frequency motor, including a motor body, which includes a housing. The housing contains a stator structure and a rotor structure. An explosion-proof chamber 20 is provided on the top of the housing. A variable frequency chamber 21 is provided inside the explosion-proof chamber 20. A variable frequency module 210 is provided inside the variable frequency chamber 21. The explosion-proof chamber 20 is formed by a top plate 24, a bottom plate 241, and four side plates. A water-cooling tank 2411 is provided below the variable frequency module 210. The water-cooling tank 2411 is connected to two water-cooling pipes 242. A cooling chamber is provided inside the housing. The cooling chamber is connected to a cold water tank through the water-cooling pipes 242.

[0021] The shell is cylindrical and includes a cooling section 12 and a mounting section 13. The cooling section 12 includes an inner shell 121 and an outer shell. The cooling cavity is sandwiched between the inner shell 121 and the outer shell. The outer surface of the inner shell 121 is provided with a plurality of first water channel plates 1211 and second water channel plates 1212 at intervals along the circumferential direction, wherein adjacent first water channel plates 1211 and second water channel plates 1212 form a water cooling channel.

[0022] In this embodiment, both the first water channel plate 1211 and the second water channel plate 1212 are connected to the inner shell 121 by welding.

[0023] The cooling chamber is also provided with a first water-cooling blocking plate 1214 and a second water-cooling blocking plate 1215. The first water-cooling blocking plate 1214 is located between the two water-cooling pipes 242. Two water nozzle connectors 1213 are provided on one side of the outer shell. The water nozzle connectors 1213 are connected to the cooling chamber. The second water-cooling blocking plate 1215 is provided between the two water nozzle connectors 1213. In use, the water nozzle connectors 1213 are connected to the circulation device by welding, so that the coolant inside the shell can circulate.

[0024] The frequency conversion module 210 includes a power unit, a DSP control chip, a capacitor 211, and an optical fiber communication module. The top of the water cooling tank 2411 is provided with a sealing plate for sealing the water cooling tank 2411.

[0025] The rotor structure includes a rotating shaft 11 rotatably disposed within the housing, with an upper bearing 110 and a lower bearing 111 respectively disposed at both ends of the rotating shaft 11.

[0026] The top of the housing is provided with a warning sign and safety markings, and a handle 23 is also provided on one side of the top of the top plate 24.

[0027] The bottom of the explosion-proof chamber 20 is also provided with a horn assembly, which includes a horn A assembly and a horn B assembly.

[0028] The side of the frequency conversion cavity 21 is also provided with a wiring cavity 22. A communication device 28 is provided between the wiring cavity 22 and the frequency conversion cavity 21. The horn mouth A component and the horn mouth B component are provided with through holes, which are connected to the wiring cavity 22.

[0029] The top plate 24, bottom plate 241, and side plate are explosion-proof plates, and the side plate and the top plate 24 are connected by bolts.

[0030] One side of the top plate 24 is hinged to the side plate, and a sealing ring is also provided between the top plate 24 and the side plate.

[0031] Please refer to Figure 4 as well as Figure 5 In use, the present invention provides water kinetic energy through the circulation device connected by the water nozzle connector 1213. The coolant flows from the upper water cooling tank 2411 through the water cooling pipe 242 located in the first water cooling blocking plate 1214 into the cooling chamber inside the shell, and flows through the Z-shaped water channel formed by the first water channel plate 1211 and the second water channel plate 1212. This allows the coolant to continuously circulate between the cooling chamber inside the shell, the water cooling pipe 242, the circulation device, and the water cooling tank 2411 at the bottom of the base plate 241, thereby achieving the cooling effect.

[0032] This utility model has at least the following advantages: 1. High-level explosion-proof performance, suitable for hazardous scenarios. The explosion-proof chamber 20 is composed of explosion-proof panels (top plate 24, bottom plate 241, and side plates). The side plates and top plate 24 adopt a combination structure of "bolted connection + hinge + sealing ring". This design can effectively prevent the leakage of flames or high-temperature gases generated by internal explosions, meets explosion-proof standards, and can be safely used in flammable and explosive environments such as chemical plants and mines.

[0033] 2. High heat exchange efficiency and more thorough heat dissipation: The cooling chamber is sandwiched between the inner shell 121 and the outer shell, and the first and second water channel plates 1212 form a Z-shaped water cooling channel. This structure can extend the flow path of the coolant, maximize the contact area between the coolant and the shell, and quickly remove the heat generated by the motor operation, with a cooling efficiency far higher than that of traditional air cooling.

[0034] 3. A single system covers the cooling of dual core components, while also taking into account both the "motor body" and the "inverter module 210": the coolant flows in the cooling chamber, directly cooling the motor stator and rotor; The bottom of the base plate 241 of the explosion-proof chamber 20 is equipped with a water-cooling tank 2411, which can conduct heat through the base plate 241 to cool the inverter module 210 (power unit, DSP control chip, etc.) in the inverter chamber 21 above. There is no need to design two separate cooling systems, which simplifies the structure and reduces costs.

[0035] 4. Stable circulation, precise temperature control, and extended lifespan: The coolant forms a closed loop through "water cooling tank 2411 → water cooling pipe 242 → cooling chamber → circulation device," and with the guidance of the first and second water cooling blocking plates 1215 (to prevent coolant short circuits), it can continuously and evenly remove heat, keeping the temperature of the motor and inverter module 210 within a safe range. This effectively avoids insulation aging and electronic component damage caused by localized overheating, significantly extending the overall service life of the motor.

[0036] 5. Adaptable to high-load scenarios and highly adaptable to various environments: Water cooling has a far superior heat dissipation capacity compared to air cooling. Even when high-power motors are running at full load or in high-temperature environments, it can still maintain a stable cooling effect. Compared to air cooling, it is less affected by environmental dust and humidity, making it suitable for long-term use in harsh industrial environments.

[0037] This is merely a preferred embodiment of the utility model and is not intended to limit the scope of the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. An integrated explosion-proof variable frequency motor, comprising a motor body, the motor body including a housing, and a stator structure and a rotor structure disposed within the housing, characterized in that: The top of the housing is provided with an explosion-proof chamber (20), and a frequency converter chamber (21) is provided inside the explosion-proof chamber (20). A frequency converter module (210) is provided inside the frequency converter chamber (21). The explosion-proof chamber (20) is formed by a top plate (24), a bottom plate (241), and four side plates. A water-cooling tank (2411) is provided below the frequency converter module (210). The water-cooling tank (2411) is connected to two water-cooling pipes (242). A cooling chamber is provided inside the housing. The cooling chamber is circulated by water. The cold pipe (242) is connected to the cold water tank. The shell is cylindrical and includes a cooling part (12) and an installation part (13). The cooling part (12) includes an inner shell (121) and an outer shell. The cooling cavity is sandwiched between the inner shell (121) and the outer shell. The outer surface of the inner shell (121) is provided with a plurality of first water channel plates (1211) and second water channel plates (1212) at intervals along the circumferential direction. The adjacent first water channel plates (1211) and second water channel plates (1212) form a water cooling channel.

2. The integrated explosion-proof variable frequency motor according to claim 1, characterized in that: The cooling chamber is also provided with a first water-cooling blocking plate (1214) and a second water-cooling blocking plate (1215). The first water-cooling blocking plate (1214) is located between the two water-cooling pipes (242) and the shell. Two water nozzle connectors (1213) are provided on one side of the shell. The water nozzle connectors (1213) are connected to the cooling chamber. The second water-cooling blocking plate (1215) is provided between the two water nozzle connectors (1213).

3. The integrated explosion-proof variable frequency motor according to claim 1, characterized in that: The frequency conversion module (210) includes a power unit, a DSP control chip, a capacitor (211), and an optical fiber communication module. The top of the water cooling tank (2411) is provided with a sealing plate for sealing the water cooling tank (2411).

4. The integrated explosion-proof variable frequency motor according to claim 1, characterized in that: The rotor structure includes a rotating shaft (11) rotatably disposed within the housing, with an upper bearing (110) and a lower bearing (111) respectively disposed at both ends of the rotating shaft (11).

5. The integrated explosion-proof variable frequency motor according to claim 1, characterized in that: The top of the housing is provided with a warning sign and safety markings, and a handle (23) is also provided on one side of the top of the top plate (24).

6. The integrated explosion-proof variable frequency motor according to claim 1, characterized in that: The bottom of the explosion-proof chamber (20) is also provided with a horn assembly, which includes a horn A assembly and a horn B assembly.

7. The integrated explosion-proof variable frequency motor according to claim 6, characterized in that: The side of the frequency converter cavity (21) is also provided with a wiring cavity (22). A communication device (28) is provided between the wiring cavity (22) and the frequency converter cavity (21). The horn mouth A component and the horn mouth B component are provided with through holes, which are connected to the wiring cavity (22).

8. The integrated explosion-proof variable frequency motor according to claim 1, characterized in that: The top plate (24), bottom plate (241) and side plate are explosion-proof plates, and the side plate and the top plate (24) are connected by bolts.

9. The integrated explosion-proof variable frequency motor according to claim 1, characterized in that: One side of the top plate (24) is hinged to the side plate, and a sealing ring is also provided between the top plate (24) and the side plate.

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