Integrated frequency converter
By combining the control module unit and the transformer unit into a compact structure, the existing frequency converter cabinet size and complex cooling system are solved, and cost reduction and heat dissipation performance are improved.
Patent Information
- Application Number
- CN202421647659.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing frequency converter cabinet consists of three independent cabinets, resulting in huge volume, increasing production and transportation costs, and the cooling system is complex and costly.
The control module unit and the transformer unit are integrated into one, integrated into the same sub-cabinet, and through the design of partition and mounting plate, a compact structure is formed, and only one fan is used for heat dissipation.
It reduces the lateral floor size of the inverter, reduces production and transportation costs, improves heat dissipation performance, and reduces the design cost of cooling system.
Smart Images
Figure CN223156955U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of frequency converters, and particularly to a compact integrated frequency converter. Background Art
[0002] A frequency converter is a power control device that applies frequency conversion technology and microelectronics technology to control an AC motor by changing the frequency of the motor's working power supply. With the development of frequency converter technology, various frequency conversion cabinets have emerged in the market. However, the frequency converter market is facing increasingly severe challenges.
[0003] Traditional frequency conversion cabinets usually consist of three separate cabinet bodies: a transformer unit, a power module unit, and a control module unit (or an incoming and outgoing line unit). Their volume is relatively large, resulting in a very large space occupation during production and assembly, transportation, and customer use, and the production and transportation costs are relatively high. Therefore, the application of this type of frequency conversion cabinet is greatly restricted. In addition, since the three component units in the known frequency conversion cabinets in the prior art are arranged independently of each other, corresponding cooling fans need to be separately provided for each cabinet body, which thus increases the design cost of the cooling system of the frequency converter. Therefore, it is necessary to develop a more cost-effective and more compact frequency converter product. Summary of the Utility Model
[0004] The purpose of the utility model is to solve at least one of the above problems and / or other problems existing in the prior art.
[0005] To achieve the above purpose, the utility model provides an integrated frequency converter, which includes a base and a frequency converter main body arranged above the base. The frequency converter main body includes a cabinet body and a transformer unit, a control module unit, and a power module unit arranged in the cabinet body. The cabinet body includes a first sub-cabinet body and a second sub-cabinet body that are spatially independent of each other. Among them, the control module unit and the transformer unit are arranged in a front-back relationship in the first sub-cabinet body, and the power module unit is arranged in the second sub-cabinet body on one side close to the wiring terminal of the transformer unit.
[0006] As an implementation manner, a first vertical partition for separating the first sub-cabinet body into a front area and a rear area is provided in the first sub-cabinet body. Among them, the control module unit is arranged in the front area for easy operation by the user, and the transformer unit is arranged in the rear area.
[0007] As an implementation manner, the first vertical partition only extends over a part of the width of the first sub-cabinet body so that the wiring terminal of the transformer unit located in the rear area is exposed and accessible from the front area.
[0008] As an implementation manner, a second vertical partition for partitioning the first sub-cabinet into a left region and a right region is further provided in the first sub-cabinet; the control module unit includes a first control component, a second control component, and an incoming and outgoing line structure electrically connected between the transformer unit and the power module unit, wherein the first control component and the incoming and outgoing line structure are arranged in a vertical relationship in the left region, and the second control component is located in the upper part of the right region, so that the wiring terminals of the transformer unit are exposed and accessible from the lower part of the right region.
[0009] As an implementation manner, a first horizontal partition is provided between the first control component and the incoming and outgoing line structure; and / or a second horizontal partition is provided between the second control component and the wiring terminals of the transformer unit.
[0010] As an implementation manner, a first insulating mounting plate and a second insulating mounting plate are provided on the first vertical partition, wherein the first insulating mounting plate is used for mounting the incoming line part in the incoming and outgoing line structure, and the second insulating mounting plate is used for mounting the outgoing line part in the incoming and outgoing line structure.
[0011] As an implementation manner, the first control component and the second control component are respectively mounted on corresponding mounting plates, and the mounting plates are detachable and movable mounting plates.
[0012] As an implementation manner, on the front outer side of the cabinet, a first cabinet door that can be independently operated is provided at a position corresponding to the second control component; a second cabinet door and a third cabinet door that can be independently operated are respectively provided at positions corresponding to the wiring terminals of the transformer unit and corresponding to the power module unit, wherein ventilation windows are provided on both the second cabinet door and the third cabinet door.
[0013] As an implementation manner, the integrated frequency converter further includes two or only one fan arranged on the top of the cabinet.
[0014] As an implementation manner, a third vertical partition is provided between the transformer unit and the power module unit, so that the air entering through the ventilation windows on the second cabinet door and the third cabinet door is discharged from the upper discharge port through the fan from bottom to top.
[0015] Compared with the prior art, the integrated frequency converter according to the present utility model can achieve at least one of the following technical effects: by integrating the control module unit and the transformer unit into one and arranging them in a front-back relationship in the same sub-cabinet, the lateral footprint of the entire frequency converter is reduced, making the structure more compact, greatly reducing the production and manufacturing costs as well as the transportation costs; due to the more compact structural design of the integrated frequency converter, using two or only one fan can provide satisfactory heat dissipation performance, which not only improves the heat dissipation performance of the frequency converter but also reduces the design cost of the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The features and advantages of the present utility model will be clearly understood from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus should not be considered as limiting the present utility model, where:
[0017] Figure 1 shows a schematic structural diagram of a known frequency converter in the prior art;
[0018] Figure 2 shows a front view of a frequency converter according to an embodiment of the present utility model, with two fans provided at the top of the cabinet of the frequency converter;
[0019] Figure 3 shows a front view of a frequency converter according to another embodiment of the present utility model, with only one fan provided at the top of the cabinet of the frequency converter;
[0020] Figure 4 shows Figure 3 a front view of the frequency converter in
[0021] Figure 5 shows Figure 3 a side view of the frequency converter in
[0022] Figure 6 shows Figure 3 a rear view of the frequency converter in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Embodiments of the present utility model will be described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a more thorough understanding and implementation of the present utility model by those skilled in the art. However, it will be apparent to those skilled in the art that some of these specific details may not be required for the implementation of the present utility model. In addition, it should be understood that the present utility model is not limited to the specific embodiments described below. On the contrary, the present utility model can be implemented by any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the aspects, features, embodiments, and advantages described below are for illustrative purposes only and should not be regarded as elements or limitations of the claims, unless expressly recited in the claims.
[0024] In the following text, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish each element and not to limit the nature, order, or number of these elements. The terms "comprising" and "having" are used to indicate an open inclusion meaning and mean that there may be additional elements / components in addition to the listed elements / components.
[0025] In addition, in the following text, directional terms such as "front", "rear", "left", "right", "upper", "lower", etc. are used. It should be understood as the orientation of the product (such as a frequency converter cabinet) relative to the operator in the normal use and placement state. For example, the front side of the product refers to the side facing the operator and that can be directly accessed and manipulated by the operator (usually, a safety protection cabinet door is provided on the front side of the product, and the operator can directly manipulate the control components located on the front side through the opened cabinet door), and the rear side of the product is the side opposite to the front side; the left side of the product refers to the left side of the product itself relative to the operator, and the right side of the product is the side opposite to the left side; and the upper side of the product refers to the upper side of the product itself relative to the operator, and the lower side of the product is the side opposite to the upper side.
[0026] As mentioned in the background art section, in the known frequency converter cabinet designs in the prior art, the transformer unit, the power module unit, and the control module unit are respectively composed of three separate cabinets. For example, as Figure 1 shown, it shows a schematic structural diagram of a frequency converter known in the prior art. In this frequency converter, it includes a control module unit 1', a power module unit 2', and a transformer unit 3' that are independent of each other and arranged in parallel. The lateral footprint size of the entire frequency converter (i.e., the width size corresponding to the entire frequency converter) is as long as 4m, which makes it occupy a large amount of space during production and assembly, transportation, and during customer use, resulting in high production and transportation costs. In addition, in terms of the design of the cooling system, usually two or more (three as shown in the figure) cooling fans 4' need to be provided, which increases the design cost of the frequency converter on the other hand.
[0027] To this end, the present utility model proposes an improved integrated frequency converter, which has the advantages of small floor area, compact structure, convenient installation, etc., greatly saves the layout space, and reduces the manufacturing cost and transportation cost of the product.
[0028] Figure 2 and Figure 3 respectively show the front views of frequency converters according to two different embodiments of the present utility model, wherein Figure 2 the shown frequency converter is provided with two fans, while Figure 3 the shown frequency converter is provided with only one fan, which further reduces the design cost of the frequency converter in terms of the cooling system compared with the embodiment in Figure 2 . Due to the compact structure design of the frequency converter according to the present utility model, using only a single fan can also provide satisfactory heat dissipation performance. In the following, the frequency converter of the present utility model will be described in detail with an embodiment provided with only one fan.
[0029] As Figure 3 shown, it shows an integrated frequency converter with a more compact structure compared to the frequency converter in the prior art. Different from the traditional frequency converter in Figure 1 , in the frequency converter shown in Figure 3 , the control module unit and the transformer unit are combined into one and integrated in the same sub-cabinet, so that the lateral floor area or the width dimension of the entire frequency converter is reduced to 2.4 m, which thus greatly reduces the floor space of the entire frequency converter and correspondingly also reduces the number of modules per phase (for example, from the original 9 to 8), thus greatly reducing the manufacturing cost and transportation cost. For example, its cost can be saved by about 25%.
[0030] Specifically, referring to Figure 3 , the frequency converter may include a base 1 and a frequency converter main body disposed above the base 1. The frequency converter main body includes a cabinet 2 in the form of a frame, a control module unit 3 disposed in the cabinet 2, a power module unit 4, a transformer unit 5 (see Figure 4-5 ), and a plurality of cabinet doors disposed outside the cabinet 2. Specifically, continuing to refer to Figure 4 , the cabinet doors disposed outside the cabinet are omitted in order to clearly show the structural arrangement inside the cabinet 2 of the frequency converter. It can be seen from Figure 4 that the cabinet 2 includes a first sub-cabinet 2a and a second sub-cabinet 2b that are spatially independent of each other.
[0031] Combined with referring to Figure 4 and Figure 5 , in the first sub-cabinet 2a, a first vertical partition 21 for partitioning the first sub-cabinet 2a into a front region and a rear region is provided (see Figure 5) The control module unit 3 is arranged in the front area for the user to operate each control component, while the transformer unit 5 is arranged in the rear area. In this way, the control module unit 3 and the transformer unit 5 are distributed in a front-rear relationship with each other or integrated within the first sub-cabinet 2a, which achieves a relatively more compact structural layout. In the first sub-cabinet 2a, due to its large volume, the transformer unit 5 occupies most of the rear space of the first sub-cabinet 2a, while the control module unit 3 is mainly distributed in the front part of the first sub-cabinet, for example, within a depth range of about 275 mm.
[0032] Although in this embodiment, the transformer unit 5 and the control module unit 3 are integrated in the same sub-cabinet, since the two are separated by the first vertical partition 21, sufficient electrical safety protection is provided, and at the same time, a corresponding heat dissipation channel is provided. This enables the reduction of the overall cabinet volume without affecting the normal use function of the frequency converter. Additionally, advantageously, as Figure 4 shown, the first vertical partition 21 extends only over a partial width (rather than the entire width) of the first sub-cabinet 2a, which allows the connection terminals 51 of the transformer unit 5 located in the rear area to be exposed and accessible from the front area, facilitating the connection of cables.
[0033] It should be understood that the above-mentioned control module unit 3 mainly includes user connection terminals (collectively referred to as "first control components 31" hereinafter), internal cabinet connection terminals (collectively referred to as "second control components 32" hereinafter), and an incoming and outgoing line structure 33 for electrical connection between the transformer unit 5 and the power module unit 4 (which includes an incoming line part 331 and an outgoing line part 332, and adopts the structural form of input and output copper bars). In the cabinet of the frequency converter according to the present utility model, there is provided a channel space 22 (see Figure 4 ) for the user cable to extend upward through, facilitating the routing and connection of the user cable.
[0034] In the specific arrangement as Figure 4 shown, a second vertical partition 23 for separating the first sub-cabinet 2a into a left area and a right area is further provided within the first sub-cabinet 2a. The first control components 31 and the incoming and outgoing line structure 33 are arranged in a vertical relationship and spaced apart from each other, for example, by a first horizontal partition 24 in the left area, and the second control components 32 are located in the upper part of the right area, for example, spaced apart from the connection terminals 51 of the transformer unit 5 by a second horizontal partition 25. In this way, Figure 4 it can be seen that the connection terminals 51 of the transformer unit 5 located in the rear area are not blocked by any components and can be exposed and accessible from the lower part of the right area, facilitating the connection of cables.
[0035] To achieve the cable connection between the power module unit 4 and the terminal 51 (such as the secondary side of the transformer) of the transformer unit 5, the power module unit 4 is arranged on the side close to the terminal 51 of the transformer unit 5 (i.e., the right side shown in Figure 3 ), within the second sub-cabinet 2b. In other words, the second sub-cabinet 2b is arranged on the side of the first sub-cabinet 2a where the terminal 51 of the transformer unit is provided.
[0036] Still referring to Figure 4 , for the convenience of installation and to achieve reliable electrical safety, in addition to serving as a separator between the transformer unit 5 and the control module unit 3, the first vertical partition 21 can also serve as a large mounting plate, on which a first insulating mounting plate 211 and a second insulating mounting plate 212 can be provided. The first insulating mounting plate 211 is used to mount the incoming line part 331 of the incoming and outgoing line structure 33, and the second insulating mounting plate 212 is used to mount the outgoing line part 332 of the incoming and outgoing line structure 33. In addition, corresponding mounting plates for mounting the first control component 31 and the second control component 32 are also provided within the cabinet 2, and these mounting plates can be designed as detachable movable mounting plates, which facilitates pre-assembly of wiring and saves assembly time.
[0037] The settings of the various partitions and mounting plates mentioned above are very advantageous. They not only ensure electrical safety between the various electrical components but also improve the heat dissipation performance of the entire frequency converter by effectively controlling the air flow direction.
[0038] As mentioned before, a plurality of cabinet doors can be provided on the front outer side of the cabinet 2. Specifically, as shown in Figure 2 and Figure 3 , these cabinet doors can include an independently operable first cabinet door 6 provided at the position corresponding to the second control component 32, and independently operable second cabinet door 7 and third cabinet door 8 provided at the positions corresponding to the terminal 51 of the transformer unit 5 and the power module unit 4 respectively. The second cabinet door 7 and the third cabinet door 8 are both provided with ventilation windows 71, 81. These ventilation windows, together with the fan 9 provided on the top of the cabinet 2, achieve ventilation and heat dissipation of the frequency converter.
[0039] As an advantageous structural design, for example, referring to Figure 6 , a third vertical partition 26 is advantageously provided between the transformer unit 5 and the power module unit 4, such that the air entering through the ventilation windows 71, 81 on the second cabinet door 7 and the third cabinet door 8 can only be discharged from the upper discharge port from bottom to top via the fan 9 (as shown in Figure 6The flow path of the heat dissipation air flow shown by the arrow in the figure), so as to ensure that the heat dissipation air flow can smoothly flow through the main heat generating components of the transformer without escaping from other paths, thus ensuring efficient heat dissipation.
[0040] It should be known that for the integrated frequency converter according to the present invention, by integrating the control module unit 3 and the transformer unit 5 into one and arranging them in a front-back relationship in the same sub-cabinet, the lateral footprint size of the entire frequency converter is reduced, thus greatly reducing the production and manufacturing costs as well as the transportation costs. In addition, through the setting of various partitions and mounting plates, the electrical safety between each electrical component is ensured and the normal function of the frequency converter can be reliably realized. In addition, due to the more compact structural design of the integrated frequency converter, only a single fan can provide satisfactory heat dissipation performance, which not only improves the heat dissipation performance but also further reduces the design cost of the frequency converter in the cooling system.
[0041] For those skilled in the art, various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the present invention. Based on the practice of the present invention disclosed in this specification, other embodiments of the present invention will be obvious to those skilled in the art. This specification and the examples disclosed therein should be considered merely illustrative, and the true scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An integrated frequency converter, which comprises a base (1) and a frequency converter main body arranged above the base (1). The frequency converter main body includes a cabinet (2), a transformer unit (5), a control module unit (3) and a power module unit (4) arranged in the cabinet (2), and is characterized in that, The cabinet body (2) includes a first sub-cabinet body (2a) and a second sub-cabinet body (2b) that are spatially independent of each other. Among them, the control module unit (3) and the transformer unit (5) are arranged in a front-back relationship within the first sub-cabinet body (2a), and the power module unit (4) is arranged within the second sub-cabinet body (2b) on one side close to the terminal (51) of the transformer unit (5).
2. The integrated frequency converter according to claim 1, characterized in that, A first vertical partition (21) for partitioning the first sub-cabinet body into a front region and a rear region is provided within the first sub-cabinet body (2a). Among them, the control module unit (3) is arranged in the front region for easy operation by the user, and the transformer unit (5) is arranged in the rear region.
3. The integrated frequency converter according to claim 2, wherein, The first vertical partition (21) extends only over a partial width of the first sub-cabinet body (2a) such that the terminal (51) of the transformer unit (5) located in the rear region is exposed and accessible from the front region.
4. The integrated frequency converter according to claim 3, wherein A second vertical partition (23) for partitioning the first sub-cabinet body (2a) into a left region and a right region is further provided within the first sub-cabinet body (2a); the control module unit (3) includes a first control component (31), a second control component (32), and an incoming and outgoing line structure (33) for electrically connecting between the transformer unit and the power module unit. Among them, the first control component (31) and the incoming and outgoing line structure (33) are arranged in an up-down relationship within the left region, and the second control component (32) is located in the upper part of the right region such that the terminal (51) of the transformer unit is exposed and accessible from the lower part of the right region.
5. The integrated frequency converter according to claim 4, wherein, A first horizontal partition (24) is provided between the first control component (31) and the incoming and outgoing line structure (33); and / or a second horizontal partition (25) is provided between the second control component (32) and the terminal (51) of the transformer unit (5).
6. The integrated frequency converter according to claim 4 or 5, characterized in that A first insulating mounting plate (211) and a second insulating mounting plate (212) are provided on the first vertical partition (21). Among them, the first insulating mounting plate (211) is used for mounting the incoming line part (331) in the incoming and outgoing line structure, and the second insulating mounting plate (212) is used for mounting the outgoing line part (332) in the incoming and outgoing line structure.
7. The integrated frequency converter according to claim 4 or 5, characterized in that The first control component (31) and the second control component (32) are respectively mounted on corresponding mounting plates, and the mounting plates are detachable and movable mounting plates.
8. The integrated frequency converter according to claim 4 or 5, characterized in that, On the front outer side of the cabinet body (2), a first cabinet door (6) that can be independently operated is provided at a position corresponding to the second control component (32); a second cabinet door (7) and a third cabinet door (8) that can be independently operated are respectively provided at positions corresponding to the terminal (51) of the transformer unit and corresponding to the power module unit (4). Among them, ventilation windows are provided on both the second cabinet door and the third cabinet door.
9. The integrated frequency converter according to claim 8, wherein The integrated frequency converter further includes two or only one fan (9) arranged on the top of the cabinet body (2).
10. The integrated frequency converter according to claim 9, wherein, A third vertical partition plate (26) is provided between the transformer unit (5) and the power module unit (4), so that the air entering through the ventilation windows on the second cabinet door (7) and the third cabinet door (8) is discharged from the upper discharge port upward through the fan (9).