Outdoor frequency converter structure with independent air duct

Abstract

The utility model relates to the technical field of frequency converters, in particular to an outdoor frequency converter structure with an independent air duct, which comprises a cabinet body with an accommodating cavity, the lower part of the rear side wall of the cabinet body and the bottom of the cabinet body are respectively provided with an air inlet and an air outlet, an air duct partition plate is vertically arranged in the accommodating cavity in a partition manner, and the air duct partition plate is provided with a through hole. A fan is mounted at the through hole; hot air on one side of the air inlet is sucked through the fan and then discharged downwards from the air outlet, air cooling and heat dissipation of electrical components installed in the cabinet body are achieved, in the suction process of the fan, external air is sucked from the air inlet to be supplemented into the cabinet body, then flows along the air channel under the action of the fan and finally is discharged from the air outlet, and heat dissipation of the electrical components is achieved. Due to the fact that the electric appliance elements are installed in the air channel, when the air flows and circulates in the air channel, most of heat generated by working of the electric appliance elements can be taken away, and a better heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, and particularly relates to an outdoor frequency converter structure with an independent air duct. 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 working power frequency of the motor, and is widely used in various fields.

[0003] In order to meet the protection level, the existing outdoor frequency converters usually adopt a more enclosed structural design. Usually, heat dissipation holes are reserved on the side of the outdoor frequency converter, and a fan is installed on the other side of the frequency converter to dissipate heat by blowing air. However, when the fan blows air from the side, it can only take away the hot air at the air-receiving part in the cabinet, and the remaining hot air stays in the cabinet and cannot be discharged well, resulting in poor heat dissipation effect. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide an outdoor frequency converter structure with an independent air duct to solve the technical problem that when the existing frequency converter dissipates heat through the side fan, the fan can only take away the hot air at the air-receiving part in the cabinet, and the remaining hot air stays in the cabinet and cannot be discharged well, resulting in poor heat dissipation effect.

[0005] The utility model is realized through the following technical solutions:

[0006] An outdoor frequency converter structure with an independent air duct includes a cabinet with an accommodation cavity. A duct partition is vertically partitioned in the accommodation cavity. An air inlet and an air outlet communicating with the accommodation cavity are respectively opened at the lower part of the side wall of the cabinet and the bottom of the cabinet, and the air inlet and the air outlet are respectively arranged on both sides of the duct partition.

[0007] A through hole is opened on the top side of the duct partition, and the through hole communicates the air inlet and the air outlet to form a tortuously extending air duct on both sides of the duct partition, and a fan is installed in the air duct.

[0008] Further, an installation plate for vertically partitioning the space between the duct partition and the front side wall of the cabinet is also installed in the accommodation cavity. The air outlet is located between the duct partition and the installation plate, and a radiator is fixedly arranged between the installation plate and the duct partition.

[0009] Further, the duct partition includes a first plate body, a second plate body and a third plate body that are sequentially connected end to end;

[0010] The first plate body is in a stepped shape, and the fan is installed above the corner of the first plate body and is located between the first plate body and the installation plate.

[0011] Furthermore, the second plate body includes a first vertical portion connected to the first plate body and a transverse portion connected to the third plate body. The transverse portion is used for installing electrical components, and the transverse portion is fixedly connected or integrally formed with the first vertical portion.

[0012] Furthermore, the third plate body includes a bent portion fixedly connected to the transverse portion. The bent portion faces the air inlet, and a second vertical portion fixedly connected to the bottom wall of the cabinet body. The second vertical portion is integrally formed with the bent portion.

[0013] Furthermore, an installation rack for installing electrical components is fixedly connected to the bottom wall of the cabinet body, and the installation rack is located above the air outlet.

[0014] Furthermore, support plates are respectively installed on the opposite surfaces of the rear side wall of the cabinet body and the air duct partition. The installation height of the support plates is greater than the position height of the air inlet, and both ends of the support plates are respectively attached to the left and right side walls of the cabinet body;

[0015] Along the depth direction of the support plates, side plates are respectively vertically and fixedly connected to the two support plates, and both ends of the two side plates are respectively commonly connected to end frames;

[0016] Along the depth direction of the side plates, a plurality of intermediate plates are installed between the two end frames, and a plurality of heat dissipation aluminum tubes are commonly penetrated through the plurality of intermediate plates.

[0017] Furthermore, a louver is installed in the air inlet.

[0018] Furthermore, a dust-proof net is installed in the air outlet.

[0019] Furthermore, a base is provided at the bottom of the cabinet body, and the base is a rectangular frame structure formed by sequentially connecting the ends of a plurality of U-shaped steel bodies end to end.

[0020] The beneficial effects of the present utility model are as follows:

[0021] When the outdoor type frequency converter structure with an independent air duct of the present utility model is in use, the hot air located on the side of the air duct partition close to the air inlet is sucked to the air inlet of the fan by the fan, and the gas is discharged downward from the air outlet of the cabinet body after being accelerated by the high-speed rotation of the impeller of the fan, realizing air-cooled heat dissipation for the electrical components installed inside the cabinet body;

[0022] Secondly, when the fan sucks and discharges the hot air inside the cabinet downward, the outside air is drawn in from the air inlet and supplemented into the cabinet, and then flows along the air duct under the action of the fan and finally discharges from the air outlet, so that the gas flows from the air inlet to the air outlet in a cycle. Since the electrical components are installed in the air duct, most of the heat generated by the operation of the electrical components can be taken away when the gas flows in the air duct in a cycle, so as to achieve a better heat dissipation effect, enable the frequency converter to operate stably, and at the same time increase the service life of each component of the equipment. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the outdoor type frequency converter structure with an independent air duct of the present invention.

[0024] Figure 2 It is a schematic connection diagram of the mounting rack and the cabinet of the outdoor type frequency converter structure with an independent air duct of the present invention.

[0025] Figure 3 It is a schematic connection diagram of the air duct partition and the cabinet of the outdoor type frequency converter structure with an independent air duct of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the air duct partition of the outdoor type frequency converter structure with an independent air duct of the present invention.

[0027] In the figure: 1 - cabinet, 2 - accommodation cavity, 3 - air inlet, 4 - air outlet, 5 - air duct partition;

[0028] 51 - first plate body, 52 - second plate body, 521 - first vertical part, 522 - transverse part, 53 - third plate body, 531 - bending part, 532 - second vertical part;

[0029] 6 - through hole, 7 - fan, 8 - mounting plate, 9 - radiator, 10 - mounting rack, 11 - support plate, 12 - side plate, 13 - end frame, 14 - intermediate plate, 15 - heat dissipation aluminum tube, 16 - shutter, 17 - dust filter, 18 - base, 19 - air duct. Detailed Embodiments

[0030] Typical embodiments embodying the features and advantages of the present invention will be specifically described in the following description. It should be understood that the present invention can have various changes in different embodiments, all of which do not depart from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present invention.

[0031] In the description of the present application, the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0032] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: an outdoor type frequency converter structure with an independent air duct, including a cabinet 1 having a receiving cavity 2. An air inlet 3 and an air outlet 4 communicating with the receiving cavity 2 are respectively provided at the lower part of the rear side wall and the bottom of the cabinet 1; a louver 16 and a dust-proof net 17 are respectively installed in the air inlet 3 and the air outlet 4. By partially opening the louver 16, it can block larger external impurities, such as leaves or paper sheets, from entering the cabinet 1 while ensuring the heat dissipation and ventilation inside the cabinet 1, so that the cabinet 1 has a certain dust-proof ability. The specific structure and working principle of the louver 16 are prior art and will not be elaborated here. The dust-proof net 17 has a similar function to the louver 16 and can both play a role in dust-proof and heat dissipation;

[0033] A base 18 is provided at the bottom of the cabinet 1. The base 18 is a rectangular frame structure formed by sequentially connecting the ends of multiple U-shaped steel bodies. By raising the cabinet 1 through the base 18, it is beneficial to the installation of the cabinet 1 and the heat dissipation and ventilation of the cabinet 1;

[0034] An air duct partition 5 is vertically partitioned in the receiving cavity 2, and the air inlet 3 and the air outlet 4 are respectively arranged on both sides of the air duct partition 5. A through hole 6 is provided on the top side of the air duct partition 5, and the through hole 6 communicates the air inlet 3 and the air outlet 4 to form a tortuously extending air duct 19 on both sides of the air duct partition 5. A fan 7 is installed in the air duct 19. When the fan 7 operates, the hot air located on the side of the air duct partition 5 close to the air inlet 3 is sucked to the air inlet of the fan 7, and the air is discharged downward from the air outlet 4 out of the cabinet 1 after being accelerated by the high-speed rotation of the impeller of the fan 7, realizing the air-cooled heat dissipation of the electrical components installed inside the cabinet 1;

[0035] Secondly, when the fan 7 sucks and discharges the hot air inside the cabinet 1 downward, the outside air is drawn in from the air inlet 3 and supplemented into the cabinet 1, and then flows along the air duct 19 under the action of the fan 7, and finally discharges from the air outlet 4, so that the gas flows and circulates from the air inlet 3 to the air outlet 4. Since the electrical components are installed in the air duct 19, most of the heat generated by the operation of the electrical components can be taken away when the gas flows and circulates in the air duct 19, so as to achieve a better heat dissipation effect, enable the frequency converter to operate stably, and at the same time increase the service life of each part of the equipment;

[0036] The fan 7 can adopt a centrifugal fan in the prior art or other fans that can achieve the same effect.

[0037] Please refer to Figure 2 and Figure 3 , an installation plate 8 for vertically partitioning the space between the air duct partition 5 and the front side wall of the cabinet 1 is also installed in the accommodation cavity 2. The air outlet 4 is located between the air duct partition 5 and the installation plate 8. By separating the space between the air duct partition 5 and the front side wall of the cabinet 1 through the installation plate 8, the electrical components can be classified and installed. The electrical components that generate more heat during operation are installed in the air duct 19. In this way, when the air flows in the air duct 19, it is beneficial to take out most of the heat in the cabinet 1 to achieve heat dissipation, while other electrical components with lower heat dissipation or electrical components for easy maintenance can be installed on the installation plate 8. When the panel on the front side of the cabinet 1 is opened, maintenance work can be carried out;

[0038] A radiator 9 is fixedly installed between the installation plate 8 and the air duct partition 5. The installation plate 8 is made of a material with good thermal conductivity, and installing the radiator 9 between the installation plate 8 and the air duct partition 5 can conduct the heat dissipated by the electrical components installed on the installation plate 8, ensuring the normal operation of the electrical components installed on the installation plate 8. The specific structure and working principle of the radiator 9 are prior art and will not be elaborated here. At the same time, the radiator 9 is located in the air duct 19. When the air flows and circulates on both sides of the air duct partition 5 under the action of the fan 7, the heat of the radiator 9 and the installation plate 8 can be taken away to avoid heat accumulation and further improve the heat dissipation effect.

[0039] Please refer to Figure 4 , the air duct partition 5 includes a first plate body 51, a second plate body 52 and a third plate body 53 that are sequentially connected end to end;

[0040] The first plate body 51 is in a stepped shape. By designing the first plate body 51 in a stepped shape, it is beneficial to provide an installation space for the fan 7. The fan 7 is installed above the corner of the first plate body 51 and is located between the first plate body 51 and the mounting plate 8, which can align the air inlet of the fan 7 with the through hole 6, facilitating the suction of hot air located on the side of the air duct partition 5 close to the air inlet 3. Moreover, the gas accelerated by the fan 7 can directly flow downward along the air duct partition 5 and be discharged from the cabinet body 1;

[0041] The second plate body 52 includes a first vertical portion 521 connected to the first plate body 51 and a transverse portion 522 connected to the third plate body 53. The transverse portion 522 is used for installing electrical components, so that the air entering the cabinet body 1 through the air inlet 3 can directly blow towards these electrical components for heat dissipation. The transverse portion 522 is fixedly connected or integrally formed with the first vertical portion 521;

[0042] The third plate body 53 includes a bent portion 531 fixedly connected to the transverse portion 522. The bent portion 531 faces the air inlet 3. Through the bent portion 531, the air entering the cabinet body 1 can be guided so that the air flows to the electrical components of the transverse portion 522 for heat dissipation; and a second vertical portion 532 fixedly connected to the bottom wall of the cabinet body 1. The second vertical portion 532 is integrally formed with the bent portion 531.

[0043] Please refer to Figure 2 , a mounting rack 10 for installing electrical components is fixedly connected to the bottom wall of the cabinet body 1. The mounting rack 10 is located above the air outlet 4. By installing electrical components such as reactors on the mounting rack 10 and being located in the air duct 19, the heat generated by the reactors can be taken away when the gas flows and be discharged downward from the air outlet 4;

[0044] Secondly, the structure similar to a "factory" shape formed by the connection of the second plate body 52 and the third plate body 53 can provide an installation space for the installation of reactors and make the electrical components installed inside the cabinet body 1 more reasonable and compact, optimizing the space utilization rate of the accommodation cavity 2.

[0045] Please refer to Figure 2 and Figure 3 , support plates 11 are respectively installed on the opposite surfaces of the rear side wall of the cabinet body 1 and the air duct partition 5. The installation height of the support plates 11 is greater than the position height of the air inlet 3, and both ends of the support plates 11 are respectively attached to the left and right side walls of the cabinet body 1;

[0046] Along the longitudinal direction of the support plate 11, side plates 12 are vertically and fixedly connected to the two support plates 11 respectively. The two ends of the two side plates 12 are jointly connected with end frames 13 respectively. The two end frames 13 and the two side plates 12 cooperate and are spliced to form a frame structure. This frame structure is located in the air duct 19 and above the air inlet 3. While the support plate 11 is used for installing this frame structure, it can partially block the bottom of this frame structure, so that when air flows in the air duct 19, it passes through this frame structure and then circulates;

[0047] Along the longitudinal direction of the side plate 12, a plurality of intermediate plates 14 are installed between the two end frames 13. A plurality of heat dissipation aluminum tubes 15 are jointly penetrated through the plurality of intermediate plates 14. Since more electrical components are installed on the side of the air duct partition 5 close to the air inlet 3, the heat accumulated at the top of the cabinet body 1 can be absorbed by the heat dissipation aluminum tubes 15 and transferred to various parts of the tube body to achieve heat dissipation. And in the process of the fan 7 working to drive the gas to flow and circulate, the heat on the heat dissipation aluminum tubes 15 can be effectively taken away, so as to effectively control the temperature of the equipment and ensure the safety and performance of the equipment.

[0048] Finally, it should be noted that the above-mentioned implementation manners are only the preferred implementation manners of the present invention, and the protection scope of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the protection scope required by the present invention.

Claims

1. An outdoor inverter structure with an independent air duct, comprising a cabinet (1) with a receiving cavity (2), characterized in that: An air duct partition (5) is provided as a vertical partition in the accommodating cavity (2); an air inlet (3) and an air outlet (4) communicating with the accommodating cavity (2) are respectively provided at the lower part of the side wall of the cabinet (1) and the bottom of the cabinet (1); and the air inlet (3) and the air outlet (4) are respectively arranged on both sides of the air duct partition (5); A through hole (6) is provided on the top side of the air duct partition (5), and the through hole (6) is connected to the air inlet (3) and the air outlet (4) to form a zigzag extending air duct (19) on both sides of the air duct partition (5), and a fan (7) is installed in the air duct (19).

2. The outdoor inverter structure with independent air duct according to claim 1 is characterized in that: The accommodating cavity (2) is also provided with a mounting plate (8) for vertically partitioning the space between the air duct partition (5) and the front side wall of the cabinet (1); the air outlet (4) is located between the air duct partition (5) and the mounting plate (8); and a heat sink (9) is fixedly provided between the mounting plate (8) and the air duct partition (5).

3. The outdoor inverter structure with independent air duct according to claim 2 is characterized in that: The air duct partition plate (5) comprises a first plate body (51), a second plate body (52) and a third plate body (53) which are connected end to end in sequence; The first plate body (51) is in a stepped shape, and the fan (7) is installed above the corner of the first plate body (51) and is located between the first plate body (51) and the mounting plate (8).

4. The outdoor inverter structure with independent air duct according to claim 3 is characterized in that: The second plate body (52) comprises a first vertical portion (521) connected to the first plate body (51), and a transverse portion (522) connected to the third plate body (53), wherein the transverse portion (522) is used for mounting electrical components, and the transverse portion (522) is fixedly connected to or integrally formed with the first vertical portion (521).

5. The outdoor inverter structure with independent air duct according to claim 4 is characterized in that: The third plate body (53) comprises a bent portion (531) fixedly connected to the transverse portion (522), the bent portion (531) facing the air inlet (3), and a second vertical portion (532) fixedly connected to the bottom wall of the cabinet (1), the second vertical portion (532) and the bent portion (531) being integrally formed.

6. The outdoor inverter structure with independent air duct according to claim 1 or 4, characterized in that: A mounting frame (10) for mounting electrical components is fixedly connected to the bottom wall of the cabinet (1), and the mounting frame (10) is located above the air outlet (4).

7. The outdoor inverter structure with independent air duct according to claim 1 is characterized in that: Support plates (11) are respectively installed on the rear side wall of the cabinet (1) and the opposite surface of the air duct partition plate (5); the installation height of the support plate (11) is greater than the position height of the air inlet (3), and the two ends of the support plate (11) are respectively in contact with the left and right side walls of the cabinet (1); Along the depth direction of the support plate (11), side plates (12) are respectively and vertically fixedly connected to the two support plates (11), and the two ends of the two side plates (12) are respectively and commonly connected to end frames (13); Along the depth direction of the side plate (12), a plurality of intermediate plates (14) are installed between the two end frames (13), and a plurality of heat dissipation aluminum tubes (15) are commonly penetrated through the plurality of intermediate plates (14).

8. The outdoor inverter structure with independent air duct according to claim 1 is characterized in that: A shutter (16) is installed in the air inlet (3).

9. The outdoor inverter structure with independent air duct according to claim 1, characterized in that: A dustproof net (17) is installed in the air outlet (4).

10. The outdoor inverter structure with independent air duct according to any one of claims 1 to 9, characterized in that: A base (18) is provided at the bottom of the cabinet (1), and the base (18) is a rectangular frame structure formed by connecting a plurality of U-shaped steel bodies end to end in sequence.

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