Variable frequency motor all-in-one machine

Abstract

The utility model discloses a variable frequency motor all-in-one machine, which comprises a substrate, a motor, a transformer, a cabinet body and a cooling fan, and is characterized in that the motor is mounted on the substrate; the transformer is mounted on the substrate and adjacent to the motor, and the transformer comprises an air duct and a coil arranged in the air duct; the cabinet body comprises a voltage transformation cabinet and a power cabinet, the voltage transformation cabinet is installed on the substrate and internally provided with a first cavity to accommodate a transformer, the power cabinet is located above the motor and provided with a second cavity communicated with the first cavity, and the cabinet body is provided with a first air opening communicated with the first cavity and a second air opening communicated with the second cavity; the cooling fan is located in the first cavity and corresponds to the first air opening, and the power cabinet is located above the motor, so that the size of the whole machine is greatly reduced compared with the size of a traditional motor and a frequency converter, the cooling fan located in the first cavity and corresponds to the first air opening drives air to circulate for heat dissipation, and the transformer cabinet and the power cabinet use air channels connected in series. Forced air cooling heat dissipation is achieved, and high integration is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable frequency motor cabinets, in particular to a variable frequency motor all-in-one machine. Background Art

[0002] The existing combination of traditional motors and general-purpose inverters is large in size and has low power density. The inverter requires a separate installation space, and cables must be laid and wiring trenches must be set between the motor and the inverter, which is costly and occupies a large area. In addition, the existing variable-frequency high-voltage integrated machine usually requires additional water cooling equipment to facilitate the heat dissipation of the inverter, which takes up a large space. At the same time, the shell of the integrated machine is cast and welded, and is formed in one piece, which has low versatility.

[0003] Therefore, how to provide a variable frequency motor integrated machine to at least partially solve the above-mentioned drawbacks is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0004] The purpose of this utility model is to provide an all-in-one variable frequency motor machine, which can greatly reduce the size of the whole machine compared with the volume of a traditional motor plus inverter. The transformer cabinet and the power cabinet use series air ducts, forced air cooling and heat dissipation, and are highly integrated. There is no need to equip derivative equipment such as a water-cooled external unit, thus avoiding the water-cooling equipment from occupying a large space.

[0005] To achieve the above-mentioned purpose, the present invention provides a variable frequency motor integrated machine, comprising:

[0006] substrate;

[0007] The motor is mounted on the base plate;

[0008] A transformer is mounted on the base plate and adjacent to the motor, the transformer comprising an air duct and a coil disposed inside the air duct;

[0009] The cabinet includes a transformer cabinet and a power cabinet. The transformer cabinet is mounted on the base plate and has a first chamber inside to accommodate the transformer. The power cabinet is located above the motor and has a second chamber connected to the first chamber. The cabinet has a first air vent connected to the first chamber and a second air vent connected to the second chamber.

[0010] The cooling fan is located in the first chamber and corresponds to the first air outlet.

[0011] Preferably, a sealing plate is provided inside the transformer cabinet to divide the first chamber into an upper first air duct chamber and a lower second air duct chamber. The sealing plate is provided with a first ventilation hole connected to the first air duct chamber and the second air duct chamber. The cooling fan is arranged on the sealing plate and is located in the first air duct chamber. The cooling fan is used to create a negative pressure environment to guide the air in the second air duct chamber to flow to the first air duct chamber and then be discharged along the first air outlet.

[0012] Preferably, a mounting plate is provided inside the second chamber to divide the second chamber into an upper mounting chamber and a lower third air duct chamber, the mounting plate is provided with a through hole, and the second chamber includes a core connected to the mounting plate and located in the mounting chamber, and a radiator connected to the core and extending into the third air duct chamber through the through hole.

[0013] Preferably, the second air outlet is connected to the third air duct cavity, the power cabinet is provided with a second ventilation hole, and the second ventilation hole is connected to the third air duct cavity and the second air duct cavity, so that the air entering the third air duct cavity through the second air outlet flows to the second air duct cavity.

[0014] Preferably, the second ventilation hole is located at a height higher than the top of the air guide cylinder.

[0015] Preferably, a horizontally extending extension section is provided around the bottom of the transformer cabinet, a plurality of first mounting holes are provided on the extension section, a plurality of second mounting holes corresponding to the first mounting holes are provided on the base plate, and fixing parts are passed through the first mounting holes and the second mounting holes for detachable connection between the transformer cabinet and the base plate.

[0016] Preferably, a first flange is provided on the top of the motor, a second flange is provided on the bottom of the power cabinet, and a connecting piece is passed through the first flange and the second flange to fix the power cabinet to the top of the motor.

[0017] Preferably, a third flange is provided at the bottom of the motor, and the third flange is used to be locked with the base plate.

[0018] Preferably, a support member is provided between the motor and the substrate, and the support member is used to adjust the distance between the rotating shaft of the motor and the substrate.

[0019] Preferably, the bottom of the transformer is provided with a ground foot, which is detachably connected to the base plate.

[0020] Compared with the above-mentioned background technology, the variable frequency motor integrated machine provided by the present invention includes a substrate, a motor, a transformer, a cabinet and a cooling fan, the motor is installed on the substrate; the transformer is installed on the substrate and is adjacent to the motor, the transformer includes an air duct and a coil arranged inside the air duct; the cabinet includes a transformer cabinet and a power cabinet, the transformer cabinet is installed on the substrate and is provided with a first chamber inside to accommodate the transformer, the power cabinet is located above the motor, and the power cabinet is provided with a second chamber connected to the first chamber, the cabinet is provided with a first air outlet connected to the first chamber and a second air outlet connected to the second chamber; the cooling fan is located in the first chamber and corresponds to the first air outlet.

[0021] Specifically, the motor and transformer are arranged adjacent to each other on the substrate, and then a cabinet containing a transformer cabinet and a power cabinet is inserted from the top. The transformer cabinet accommodates the transformer, and the power cabinet is located above the motor, so that the size of the whole machine is greatly reduced compared with the volume of a traditional motor plus inverter. The first chamber and the second chamber are connected, the first chamber is provided with a first air outlet, and the second chamber is provided with a second air outlet. The cooling fan located in the first chamber and corresponding to the first air outlet drives air circulation for heat dissipation. The transformer cabinet and the power cabinet use series air ducts, forced air cooling and high integration, without the need for derivative equipment such as water-cooled external units. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 An exploded view of the variable frequency motor integrated machine provided by an embodiment of the present utility model;

[0024] Figure 2 This is a front view of the variable frequency motor integrated machine provided by an embodiment of the utility model;

[0025] Figure 3 A cross-sectional view of a variable frequency motor integrated machine provided by an embodiment of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of a substrate provided in an embodiment of the present utility model.

[0027] in:

[0028] 1-motor, 2-power cabinet, 3-radiator, 4-core, 5-cooling fan, 6-transformer cabinet, 7-transformer, 8-base plate, 9-third air duct cavity, 10-sealing plate, 11-first air outlet, 12-second air outlet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In order to make the technical personnel in the technical field better understand the utility model scheme, the utility model is further described in detail below in combination with the drawings and specific embodiments.

[0031] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "top", "bottom", "inner" and "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, constitute and operate in a specific orientation, therefore, it cannot be understood as the limitation of the utility model.

[0032] The utility model aims at providing a kind of frequency conversion motor integrated machine, can make the whole machine size compared with the volume of traditional motor plus frequency converter greatly reduce, and power cabinet 2 uses the air duct of series connection in transformer cabinet 6, forced air cooling heat dissipation and high integration, without being equipped with water-cooled external machine and derivative equipment, avoid the water-cooled equipment to occupy larger space.

[0033] Please refer to Figure 1 And Figure 4 To achieve the above object, the utility model provides a kind of frequency conversion motor 1 integrated machine, including base plate 8, motor 1, transformer 7, cabinet and cooling fan 5.

[0034] Motor 1 is installed on base plate 8, wherein base plate 8 is square plate structure, first opening and second opening are adjacent and are located below motor 1 on base plate 8, increase the contact area of air and motor 1 shell, for the heat transfer in the operation process of motor 1, better heat dissipation is carried out, while the material consumption of base plate 8 is saved, the weight of entire base plate 8 is reduced, subsequent transportation and installation are facilitated.

[0035] It needs to be explained that first opening and second opening can adopt square opening, to increase the cross-sectional dimension of first opening and second opening, preferably the length of second opening in the length direction of plate body is twice the length of first opening in the length direction of plate body, and first opening is located between second opening and the following supporting leg, motor 1 can adopt permanent magnet motor 1, the type of motor 1, the shape and size of first opening and second opening can be selected according to actual needs, can realize the above object.

[0036] Transformer 7 is installed on base plate 8 and adjacent to motor 1, and transformer 7 includes air duct and coil arranged in the inside of air duct;Wherein, the bottom of transformer 7 is provided with footing, and footing is detachably connected to base plate 8.

[0037] Furthermore, the foot includes a horizontal plate parallel to the base plate 8 and two vertical plates arranged on the horizontal plate. The two vertical plates are arranged parallel to and perpendicular to the horizontal plate to support the bottom of the coil. Fixing holes are provided at both ends of the horizontal plate for mounting and positioning the horizontal plate on the base plate 8. The installation method can be threaded connection, etc. The number of foots corresponds to the number of coils.

[0038] A small square hole is provided on the top of the air duct for subsequent connection of the wiring terminal of the transformer 7 with the cable.

[0039] See also Figure 2 The cabinet includes a transformer cabinet 6 and a power cabinet 2. The transformer cabinet 6 is installed on a base plate 8 and is provided with a first cavity inside to accommodate a transformer 7. The power cabinet 2 is located above the motor 1 and is provided with a second cavity connected to the first cavity. The cabinet is provided with a first air outlet 11 connected to the first cavity and a second air outlet 12 connected to the second cavity.

[0040] The overall structure of the cabinet is an "L" rotated 90° clockwise. Through the "I"-shaped power cabinet 2 and the "I"-shaped transformer cabinet 6 contained in the "L"-shaped cabinet, the installed cabinet and the motor 1 as a whole can be a square structure to form a high-performance, compact high-voltage integrated machine.

[0041] The cooling fan 5 is located in the first chamber and corresponds to the first air outlet 11 .

[0042] The motor 1 and the transformer 7 are arranged adjacent to each other on the base plate 8, and then a cabinet containing a transformer cabinet 6 and a power cabinet 2 is inserted from above. The transformer cabinet 6 accommodates the transformer 7, and the power cabinet 2 is located above the motor 1, so that the size of the whole machine is greatly reduced compared with the volume of the traditional motor 1 plus the inverter. The first chamber and the second chamber are connected. The first chamber is provided with a first air outlet 11, and the second chamber is provided with a second air outlet 12. The cooling fan 5 located in the first chamber and corresponding to the first air outlet 11 drives air circulation for heat dissipation. The transformer cabinet 6 and the power cabinet 2 use series air ducts, forced air cooling and high integration, without the need for derivative equipment such as a water-cooled external unit.

[0043] See also Figure 3 In this embodiment, a sealing plate 10 is provided inside the transformer cabinet 6 to divide the first chamber into an upper first air duct chamber and a lower second air duct chamber. The sealing plate 10 is provided with a first ventilation hole connected to the first air duct chamber and the second air duct chamber. The cooling fan 5 is arranged on the sealing plate 10 and is located in the first air duct chamber. The cooling fan 5 is used to generate a negative pressure environment to guide the air in the second air duct chamber to circulate to the first air duct chamber and then be discharged along the first air outlet 11.

[0044] The number of cooling fans 5 and first ventilation holes corresponds one to one, and the central axes of the corresponding cooling fans 5 and first ventilation holes are consistent, so that the first ventilation holes serve as the air inlet of the cooling fans 5. When the cooling fans 5 are started, a negative pressure environment is formed at the first ventilation holes, so that the air inside the cabinet flows to the first ventilation holes and is enriched at the first ventilation holes, so as to improve the exhaust efficiency of the cooling fans 5 and facilitate new air to enter the cabinet for subsequent air cooling process. The use of forced air cooling can avoid the installation space of on-site water cooling equipment, and there is no need to consider the on-site installation environment. It can be flexibly applied to various usage sites.

[0045] The first ventilation hole can be set as a circular hole, and the first ventilation hole can be set as a flared structure to increase the cross-sectional size of the first ventilation hole at one end close to the second air duct cavity, so as to facilitate air to enter the heat dissipation fan 5.

[0046] In addition, a mounting plate is provided inside the second chamber to divide the second chamber into an upper mounting chamber and a lower third air duct chamber 9. The mounting plate is provided with a through hole. The second chamber includes a core 4 connected to the mounting plate and located in the mounting chamber, and a radiator 3 connected to the core 4 and extending into the third air duct chamber 9 through the through hole.

[0047] The second air outlet 12 is connected to the third air duct cavity 9. The power cabinet 2 is provided with a second ventilation hole. The second ventilation hole is connected to the third air duct cavity 9 and the second air duct cavity, so that the air entering the third air duct cavity 9 through the second air outlet 12 flows to the second air duct cavity.

[0048] The radiator 3 absorbs the heat of the core 4 and dissipates the heat of the radiator 3 by circulating air along the second air outlet 12 into the third air duct cavity 9. The negative pressure environment formed by the first ventilation hole can guide the air to circulate to the first ventilation hole, and then be discharged to the outside of the cabinet through the cooling fan 5 and the first air outlet 11.

[0049] The bottom of the radiator 3 is opposite to the second air outlet 12 to improve the heat dissipation effect of the radiator 3. Both the first air outlet 11 and the second air outlet 12 can adopt shutters, and dust filters can be installed in the shutters to prevent external dust from being sucked into the cabinet.

[0050] A controller can be provided to control the operation of the cooling fan 5. When the temperature in the third air duct cavity 9 and the second air duct cavity is higher than a preset value (for example, 38°), the controller controls the cooling fan 5 to operate for air cooling and heat dissipation. When the temperature in the third air duct cavity 9 and the second air duct cavity is lower than a preset value (for example, 30°), the controller controls the cooling fan 5 to suspend operation to save energy consumption.

[0051] It should be noted that the height of the second ventilation hole is higher than the height of the top of the air guide tube, so that the air entering the third air duct cavity 9 through the second ventilation hole moves to the top of the coil, which facilitates the timely discharge of hot air.

[0052] In some embodiments, the bottom of the transformer cabinet 6 is provided with horizontally extending extension sections, and a plurality of first mounting holes are arranged on the extension sections. The base plate 8 is provided with a plurality of second mounting holes corresponding to the first mounting holes. The fixing member is arranged in the first mounting hole and the second mounting hole, and is used for detachable connection of the transformer cabinet 6 and the base plate 8.

[0053] The connection mode of the transformer cabinet 6 and the base plate 8 can also be welding, etc., which can achieve the above-mentioned purpose.

[0054] It should be noted that the transformer cabinet 6 is also provided with a rectangular opening, which is located below the first air inlet 11. The rectangular opening includes an upper rectangular opening and a lower rectangular opening arranged in a top-down manner. The upper rectangular opening corresponds to the small square hole at the top of the air duct. The upper rectangular opening and the lower rectangular opening are provided with sealing members, which are detachably sealed to the rectangular opening by screws.

[0055] The upper rectangular opening can be used for wiring of the transformer 7. When wiring of the transformer 7 is needed, the sealing member is removed. When the wiring of the transformer 7 is completed, the sealing member is installed. The lower rectangular opening facilitates the inspection of whether the foot is loose or not by the operator.

[0056] The top of the motor 1 is provided with a first flange plate, and the bottom of the power cabinet 2 is provided with a second flange plate. The connecting member is arranged in the first flange plate and the second flange plate, so as to fix the power cabinet 2 on the top of the motor 1.

[0057] The power cabinet 2 is directly installed on the top flange of the motor 1, which saves the installation space of the conventional frequency converter alone. Moreover, the motor 1 cable can be directly inserted into the wire inlet hole at the bottom of the power cabinet 2 from the top of the motor 1, which reduces the cable length and can not use special treated cable, greatly reducing the site construction cost.

[0058] The bottom of the motor 1 is provided with a third flange plate, which is used for locking with the base plate 8 and fixing the motor 1 to the preset position of the base plate 8.

[0059] In addition, the support member is arranged between the motor 1 and the base plate 8, which is used for adjusting the distance between the rotating shaft of the motor 1 and the base plate 8. According to the required height of the non-standard hole position shaft center of the original motor 1 on site, the installation hole position of the third flange plate and the setting height of the support member can be flexibly changed, so as to ensure that the frequency converter and the motor 1 do not need to be changed, and various non-standard load motors 1 can be seamlessly replaced.

[0060] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between the entities.

[0061] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. The same or similar reference numerals are used in the drawings and description to refer to the same or like parts, components and operations throughout.

[0062] The principles and implementation modes of the present application are described by using specific examples in the specification. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in many ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A variable frequency motor integrated machine, characterized in that: include: base(8); A motor (1) mounted on the substrate (8); A transformer (7) is mounted on the substrate (8) and is adjacent to the motor (1), the transformer (7) comprising an air duct and a coil disposed inside the air duct; A cabinet body, comprising a transformer cabinet (6) and a power cabinet (2), wherein the transformer cabinet (6) is mounted on the base plate (8) and is provided with a first chamber therein for accommodating the transformer (7), the power cabinet (2) is located above the motor (1), and the power cabinet (2) is provided with a second chamber connected to the first chamber, and the cabinet body is provided with a first air outlet (11) connected to the first chamber and a second air outlet (12) connected to the second chamber; A cooling fan (5) is located in the first chamber and corresponds to the first air outlet (11).

2. The variable frequency motor integrated machine according to claim 1, characterized in that: The transformer cabinet (6) is provided with a sealing plate (10) inside to divide the first chamber into an upper first air duct chamber and a lower second air duct chamber. The sealing plate (10) is provided with a first ventilation hole connected to the first air duct chamber and the second air duct chamber. The heat dissipation fan (5) is provided on the sealing plate (10) and is located in the first air duct chamber. The heat dissipation fan (5) is used to generate a negative pressure environment to guide the air in the second air duct chamber to circulate to the first air duct chamber and then be discharged along the first air outlet (11).

3. The variable frequency motor integrated machine according to claim 2, characterized in that: A mounting plate is provided inside the second chamber to divide the second chamber into an upper mounting chamber and a lower third air duct chamber (9); the mounting plate is provided with a through hole; the second chamber comprises a core (4) connected to the mounting plate and located in the mounting chamber, and a heat sink (3) connected to the core (4) and extending into the third air duct chamber (9) through the through hole.

4. The variable frequency motor integrated machine according to claim 3, characterized in that: The second air outlet (12) is connected to the third air duct cavity (9), and the power cabinet (2) is provided with a second ventilation hole, and the second ventilation hole is connected to the third air duct cavity (9) and the second air duct cavity, so that the air entering the third air duct cavity (9) through the second air outlet (12) flows into the second air duct cavity.

5. The variable frequency motor integrated machine according to claim 4, characterized in that: The second ventilation hole is located at a height higher than the top of the air guide cylinder.

6. The variable frequency motor integrated machine according to any one of claims 1 to 5, characterized in that: The bottom of the transformer cabinet (6) is provided with a horizontally extending extension section around its periphery, the extension section is provided with a plurality of first mounting holes, the base plate (8) is provided with a plurality of second mounting holes corresponding to the first mounting holes, and fixing members are passed through the first mounting holes and the second mounting holes for detachable connection between the transformer cabinet (6) and the base plate (8).

7. The variable frequency motor integrated machine according to claim 6, characterized in that: The top of the motor (1) is provided with a first flange, the bottom of the power cabinet (2) is provided with a second flange, and a connecting piece is passed through the first flange and the second flange to fix the power cabinet (2) to the top of the motor (1).

8. The variable frequency motor integrated machine according to claim 6, characterized in that: A third flange is provided at the bottom of the motor (1), and the third flange is used to be locked with the base plate (8).

9. The variable frequency motor integrated machine according to claim 6, characterized in that: A support member is provided between the motor (1) and the base plate (8), and the support member is used to adjust the distance between the rotating shaft of the motor (1) and the base plate (8).

10. The variable frequency motor integrated machine according to claim 6, characterized in that: The bottom of the transformer (7) is provided with a ground foot, and the ground foot is detachably connected to the base plate (8).

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