Low-voltage frequency conversion cabinet with adjustable heat dissipation mode

Abstract

The utility model relates to the technical field of low-voltage frequency conversion cabinets, in particular to a low-voltage frequency conversion cabinet with an adjustable heat dissipation mode. According to the technical scheme, the cabinet comprises a cabinet body and a cabinet door rotationally installed on the cabinet body, and further comprises a lifting mechanism installed in the cabinet body, a fan set is installed on the lifting mechanism, the lifting mechanism drives the fan set to ascend and descend in the cabinet body, a connecting rod is installed on the fan set, an interval temperature measuring assembly is installed on the connecting rod, and the interval temperature measuring assembly is connected with the cabinet body. The interval temperature measuring assembly is used for measuring the temperature of different height intervals in the cabinet body, and the driving mechanism drives the fan set to rotate and adjusts the rotating speed of the fan set according to the temperature detected by the interval temperature measuring assembly. According to the utility model, through the lifting mechanism, the plurality of fan blades are driven to perform lifting motion, heat dissipation can be performed on electronic components with different heights, mutual shielding of multiple layers of electronic components is prevented, and uniform and rapid heat dissipation can be performed on the internal electronic components.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage frequency conversion cabinets, in particular to a low-voltage frequency conversion cabinet with adjustable heat dissipation mode. Background Art

[0002] Low-voltage frequency converter cabinet is a power control system device, which is mainly used to adjust the speed of AC motor. It converts the input AC power into an AC power output with controllable frequency to achieve precise control of the motor speed. Low-voltage frequency converter cabinet usually contains components such as frequency converter, control panel, protection device, etc., and is widely used in industrial production, transportation, building automation and other fields.

[0003] Low-voltage frequency converter cabinets generate heat during operation, mainly because the electronic components inside the frequency converter generate a certain amount of heat when converting electrical energy. If effective heat dissipation is not performed, long-term accumulation may cause the frequency converter to overheat, affecting its performance and life, and may even cause failures or safety accidents. Therefore, low-voltage frequency converter cabinets usually require heat dissipation design. Heat dissipation methods include fan heat dissipation, installing fans inside or outside the frequency converter cabinet, and improving heat dissipation efficiency by forcing air flow.

[0004] However, there are many electronic components inside the cabinet, and the airflow generated by the fan cannot pass through all the electronic components, resulting in reduced heat dissipation efficiency. In addition, there are multiple groups of electronic components installed inside the cabinet, and the heat generated by the multiple electronic components is not the same, resulting in uneven heat inside the cabinet. Therefore, it is impossible to accurately cool down different areas inside the cabinet, and the fan always maintains a constant speed when the temperature is low and when the temperature is high, which is not conducive to reducing energy consumption. Summary of the invention

[0005] The utility model aims to solve the problems existing in the background technology and proposes a low-voltage frequency conversion cabinet with an adjustable heat dissipation mode for accurately cooling different areas inside the cabinet.

[0006] The technical solution of the utility model is: a low-voltage frequency conversion cabinet with adjustable heat dissipation mode, comprising a cabinet body, a cabinet door rotatably mounted on the cabinet body, and also comprising:

[0007] A lifting mechanism is installed in the cabinet, a fan unit is installed on the lifting mechanism, and the lifting mechanism drives the fan unit to perform lifting movement in the cabinet;

[0008] A connecting rod is installed on the fan unit, and an interval temperature measurement component is installed on the connecting rod. The interval temperature measurement component measures the temperature of different height intervals in the cabinet;

[0009] A driving mechanism drives the fan unit to rotate, and the driving mechanism adjusts the rotation speed of the fan unit according to the temperature detected by the interval temperature measurement component.

[0010] Optionally, the lifting mechanism includes support plates fixedly mounted on the upper and lower sides of the cabinet, a first motor fixedly mounted on one of the support plates, two bidirectional screw rods rotatably mounted between the two support plates, two guide rods fixedly mounted on the support plates, and a connecting block threadedly connected to the bidirectional screw rods and slidably connected to the guide rods, and the two bidirectional screw rods are transmission connected.

[0011] Optionally, the two bidirectional screw rods are fixedly mounted with a first transmission belt, and the first transmission belt enables the two bidirectional screw rods to rotate synchronously.

[0012] Optionally, the fan unit includes a mounting frame fixedly mounted between the two connecting blocks, and a plurality of fan blades rotatably mounted on the mounting frame.

[0013] Optionally, the driving mechanism includes a second motor fixedly mounted on the mounting frame, and a second transmission belt is installed between the plurality of fan blades and the second motor, and the second transmission belt enables the plurality of fan blades to rotate synchronously.

[0014] Optionally, the interval temperature measurement component includes a plurality of first temperature sensors fixedly mounted on a connecting rod, a plurality of conical guide plates fixedly mounted on the connecting rod, and a micro fan fixedly mounted in the conical guide plates, and the plurality of conical guide plates correspond one-to-one to the plurality of first temperature sensors.

[0015] Optionally, the end of the conical guide plate with a larger diameter is far away from the first temperature sensor, and the end of the conical guide plate with a larger diameter points to the electronic components inside the cabinet.

[0016] Optionally, a second temperature sensor is fixedly mounted on the top plate inside the cabinet, and the second temperature sensor detects the temperature of the top of the cabinet.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model drives multiple fan blades to perform lifting and lowering movements through a lifting mechanism. After the fan blades move to different heights, they can dissipate heat for electronic components at different heights, preventing multiple layers of electronic components from blocking each other, resulting in a large amount of wind being blocked, thereby enabling uniform and rapid heat dissipation for internal electronic components.

[0019] Furthermore, the interval temperature measurement component is lifted and lowered along with the lifting mechanism, driving the multiple first temperature sensors to move to different heights in the cabinet, and the gas on the side of the conical guide plate close to the electronic component is sucked in by the micro-fan and directed to the first temperature sensor, so that the first temperature sensor can quickly detect the temperature near the electronic component, thereby preventing the electronic component from burning out when the temperature of a single electronic component is too high and cannot affect the overall temperature inside the cabinet, and can perform targeted detection of the temperature inside the cabinet, thereby improving the safety of use;

[0020] Furthermore, the controller receives the data transmitted by the first temperature sensor and analyzes it. The controller then starts the second motor and controls the speed of the second motor according to the data detected by the first temperature sensor. When the detected temperature is high, the controller increases the speed of the second motor. When the detected temperature is low, the controller reduces the speed of the second motor. This allows the controller to specifically control the power of the second output and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural schematic diagram of an embodiment of the utility model is given;

[0022] Figure 2 Provide an internal cross-sectional view of the utility model;

[0023] Figure 3 An exploded diagram of the drive mechanism of the utility model is provided;

[0024] Figure 4 A position distribution diagram of the conical guide plate of the utility model is given;

[0025] Figure 5 Provide the utility model Figure 1 A partial enlarged view of the middle A;

[0026] Figure 6 Provide the utility model Figure 2 A partial enlarged view of point B in the middle;

[0027] Figure 7 Provide the utility model Figure 4 A partial enlarged view of point C in the middle.

[0028] Figure numerals: 1, cabinet body; 101, cabinet door; 2, second temperature sensor; 3, support plate; 301, bidirectional screw rod; 302, guide rod; 303, first motor; 304, first transmission belt; 305, connecting block; 4, mounting frame; 401, fan blade; 402, second motor; 403, second transmission belt; 5, connecting rod; 6, first temperature sensor; 601, conical guide plate; 602, micro fan. DETAILED DESCRIPTION

[0029] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Example

[0031] like Figure 1-2 As shown, the utility model proposes a low-voltage frequency conversion cabinet with adjustable heat dissipation mode, including a cabinet body 1, a cabinet door 101 rotatably mounted on the cabinet body 1, and a second temperature sensor 2 is fixedly mounted on the top plate inside the cabinet body 1, and the second temperature sensor 2 detects the temperature of the top of the cabinet body 1. Because the gas inside the cavity rises after being heated, the temperature of the top of the cabinet body 1 is relatively high. By monitoring the temperature of the top of the cabinet body 1, it can be accurately reflected whether active heat dissipation is required in the cabinet body 1.

[0032] like Figure 2 and Figure 5-6 As shown, the low-voltage frequency conversion cabinet also includes: a lifting mechanism is installed in the cabinet 1, a fan unit is installed on the lifting mechanism, and the lifting mechanism drives the fan unit to perform lifting movement in the cabinet. The fan unit includes a mounting frame 4 fixedly installed between two connecting blocks 305, and a plurality of fan blades 401 rotatably installed on the mounting frame 4. The lifting mechanism includes support plates 3 fixedly installed on the upper and lower sides of the cabinet 1, a first motor 303 fixedly installed on one of the support plates 3, two bidirectional screw rods 301 rotatably installed between the two support plates 3, two guide rods 302 fixedly installed on the support plate 3, and a connecting block 305 threadedly connected to the bidirectional screw rod 301 and slidably connected to the guide rod 302, and the two bidirectional screw rods 301 are transmission-connected. The two bidirectional screw rods 301 are fixedly installed with a first transmission belt 304, and the first transmission belt 304 enables the two bidirectional screw rods 301 to rotate synchronously. Start the first motor 303 to drive a bidirectional screw rod 301 fixedly connected thereto to rotate, and make the two bidirectional screw rods 301 rotate synchronously through the first transmission belt 304, thereby driving the connecting block 305 to perform lifting movement and then driving the multiple fan blades 401 to perform lifting movement. After the fan blades 401 move to different heights, they can dissipate heat for electronic components at different heights, preventing multiple layers of electronic components from blocking each other, resulting in a large amount of wind being blocked, thereby enabling uniform and rapid heat dissipation of the internal electronic components.

[0033] like Figure 2 and Figure 4 as well as Figure 6As shown, a connecting rod 5 is installed on the fan unit, and an interval temperature measurement component is installed on the connecting rod 5. The interval temperature measurement component measures the temperature of different height intervals in the cabinet 1. The interval temperature measurement component includes a plurality of first temperature sensors 6 fixedly installed on the connecting rod 5, a plurality of conical guide plates 601 fixedly installed on the connecting rod 5, and a micro-blower 602 fixedly installed in the conical guide plate 601. The plurality of conical guide plates 601 correspond one-to-one to the plurality of first temperature sensors 6. The end of the conical guide plate 601 with a larger diameter is away from the first temperature sensor 6, and the end of the conical guide plate 601 with a larger diameter points to the electronic components inside the cabinet 1. When the lifting mechanism drives the installation frame 4 to perform lifting and lowering movements, it can also drive the connecting rod 5 to perform lifting and lowering movements at the same time, thereby driving the plurality of first temperature sensors 6 to move to different heights in the cabinet 1, and starting the micro-blower 602, such as Figure 7 , so that the gas on the side of the conical guide plate 601 close to the electronic component is sucked in and guided to the first temperature sensor 6, so that the first temperature sensor 6 can quickly detect the temperature near the electronic component, thereby preventing the electronic component from burning out when the temperature of a single electronic component is too high and cannot affect the overall temperature inside the cabinet 1. The temperature inside the cabinet 1 can be detected in a targeted manner, thereby improving the safety of use.

[0034] like Figure 3 As shown, the driving mechanism drives the fan unit to rotate, and the driving mechanism adjusts the speed of the fan unit according to the temperature detected by the interval temperature measuring component. The driving mechanism includes a second motor 402 fixedly mounted on the mounting frame 4, and a second transmission belt 403 is installed between the plurality of blades 401 and the second motor 402, and the second transmission belt 403 enables the plurality of blades to rotate synchronously. A controller is installed in the cabinet 1, and after receiving the data transmitted by the first temperature sensor 6, the controller analyzes it, and then the controller starts the second motor 402, and controls the speed of the second motor 402 according to the data detected by the first temperature sensor 6. When the detected temperature is high, the controller increases the speed of the second motor 402, and when the detected temperature is low, the controller reduces the speed of the second motor 402, and the second motor 402 drives the plurality of blades 401 to rotate through the second transmission belt 403, so that the blades 401 dissipate heat for the internal electronic components.

[0035] Working principle: The second temperature sensor 2 detects the temperature at the top of the cabinet 1. When the temperature at the top of the cabinet 1 is high, the first motor 303 is started to drive the bidirectional screw 301 to rotate, thereby driving the connecting block 305 to move up and down, and then driving the multiple fan blades 401 to move up and down, and at the same time driving the connecting rod 5 to move up and down, thereby driving the multiple first temperature sensors 6 to move to different heights in the cabinet 1, and starting the micro fan 602 to inhale the gas on the side of the conical guide plate 601 close to the electronic component and guide it to the first temperature sensor 6, so that the first temperature sensor 6 can quickly detect the temperature near the electronic component. After the controller receives the data transmitted by the first temperature sensor 6, it analyzes , then the controller starts the second motor 402, and controls the speed of the second motor 402 according to the data detected by the first temperature sensor 6. When the detected temperature is high, the controller increases the speed of the second motor 402. When the detected temperature is low, the controller reduces the speed of the second motor 402. The second motor 402 drives the plurality of fan blades 401 to rotate through the second transmission belt 403, so that the fan blades 401 can dissipate heat for electronic components at different heights, preventing multiple layers of electronic components from blocking each other, resulting in a large amount of wind being blocked, thereby enabling uniform and rapid heat dissipation of the internal electronic components, and being able to adjust the speed of the fan blades 401 according to temperatures at different heights, thereby reducing energy consumption.

[0036] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A low-voltage frequency conversion cabinet with adjustable heat dissipation mode, comprising a cabinet body (1), and a cabinet door (101) rotatably mounted on the cabinet body (1), characterized in that: Also includes: A lifting mechanism is installed in the cabinet (1), a fan unit is installed on the lifting mechanism, and the lifting mechanism drives the fan unit to perform lifting movement in the cabinet; A connecting rod (5) is installed on the fan unit, and an interval temperature measurement component is installed on the connecting rod (5), and the interval temperature measurement component measures the temperature of different height intervals in the cabinet (1); A driving mechanism drives the fan unit to rotate, and the driving mechanism adjusts the rotation speed of the fan unit according to the temperature detected by the interval temperature measurement component.

2. A low-voltage frequency conversion cabinet with adjustable heat dissipation method according to claim 1, characterized in that: The lifting mechanism comprises support plates (3) fixedly mounted on the upper and lower sides of the cabinet (1), a first motor (303) fixedly mounted on one of the support plates (3), two bidirectional screw rods (301) rotatably mounted between the two support plates (3), two guide rods (302) fixedly mounted on the support plates (3), and a connecting block (305) threadedly connected to the bidirectional screw rod (301) and slidably connected to the guide rod (302), wherein the two bidirectional screw rods (301) are transmission-connected.

3. A low-voltage frequency conversion cabinet with adjustable heat dissipation method according to claim 2, characterized in that: The two bidirectional screw rods (301) are fixedly mounted with a first transmission belt (304), and the first transmission belt (304) enables the two bidirectional screw rods (301) to rotate synchronously.

4. The low-voltage frequency conversion cabinet with adjustable heat dissipation method according to claim 2, characterized in that: The fan unit comprises a mounting frame (4) fixedly mounted between the two connecting blocks (305), and a plurality of fan blades (401) rotatably mounted on the mounting frame (4).

5. The low-voltage frequency conversion cabinet with adjustable heat dissipation method according to claim 4, characterized in that: The driving mechanism comprises a second motor (402) fixedly mounted on the mounting frame (4); a second transmission belt (403) is installed between the plurality of fan blades (401) and the second motor (402); the second transmission belt (403) enables the plurality of fan blades to rotate synchronously.

6. The low-voltage frequency conversion cabinet with adjustable heat dissipation method according to claim 1, characterized in that: The interval temperature measurement component comprises a plurality of first temperature sensors (6) fixedly mounted on the connecting rod (5), a plurality of conical guide plates (601) fixedly mounted on the connecting rod (5), and a micro fan (602) fixedly mounted inside the conical guide plates (601), wherein the plurality of conical guide plates (601) correspond one-to-one to the plurality of first temperature sensors (6).

7. The low-voltage frequency conversion cabinet with adjustable heat dissipation method according to claim 6, characterized in that: The end of the conical guide plate (601) with a larger diameter is far away from the first temperature sensor (6), and the end of the conical guide plate (601) with a larger diameter points to the electronic components inside the cabinet (1).

8. The low-voltage frequency conversion cabinet with adjustable heat dissipation method according to claim 1, characterized in that: A second temperature sensor (2) is fixedly mounted on the top plate inside the cabinet (1), and the second temperature sensor (2) detects the temperature of the top of the cabinet (1).

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