Motor frequency converter
By designing the box structure and components in the inverter, including the water removal chamber and the dust removal chamber, using water absorbent and vacuum cleaner, combined with servo motor and exhaust fan, the problems of poor heat dissipation ability of the inverter and dust and water vapor entering are solved, and the problem of excessive heat dissipation of the inverter is extended. Service life.
Patent Information
- Application Number
- CN202420888262.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The existing inverters have poor internal air flow and a lot of dust accumulation, resulting in poor heat dissipation capabilities, short service life of components, and the ventilation and heat dissipation ports are prone to dust and water vapor entering, resulting in corrosion of components and affecting service life.
A motor frequency converter is designed, adopting a box structure, including a water removal chamber and a dust removal chamber, which are respectively equipped with water absorption agent and vacuum agent. The cleaning brush and exhaust fan driven by a servo motor are combined with a dustproof net and an isolation plate to achieve Effective heat dissipation and pollutant filtration to prevent dust and water vapor from entering.
It effectively improves the heat dissipation ability of the internal components of the inverter, reduces the contact between dust and water vapor with the components, and extends the service life.
Smart Images
Figure CN222215565U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of frequency converters, in particular to a motor frequency converter. Background Art
[0002] Variable-frequency Drive (VFD) is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. With the continuous improvement of industrial automation, frequency converters have also been widely used.
[0003] Inverters generally contain a large number of power devices, such as bus capacitors, rectifier bridges, filters, etc. Since they have circuit electronic components, the temperature inside the inverter should not be too high, otherwise it will easily affect the service life of the circuit electronic components and the stability of the working process. At present, inverters have poor internal airflow, a lot of dust accumulation, poor heat dissipation capacity, and large internal heat accumulation, which leads to a short service life of the components in the inverter; on the other hand, most existing inverters dissipate heat through ventilation and heat dissipation ports, but dust and water vapor can easily enter the inverter from the ventilation and heat dissipation ports, and dust accumulates in the components in the inverter. Due to the presence of water vapor, the components inside the inverter are easily corroded, which seriously affects the service life of the inverter. Summary of the invention
[0004] The utility model aims to provide a motor frequency converter, which can effectively dissipate heat for the internal components of the frequency converter, and can effectively reduce the contact between dust and water vapor in the air and the internal components of the frequency converter, which is beneficial to prolonging the service life of the frequency converter.
[0005] To achieve the above-mentioned purpose, the utility model provides a motor inverter, including an inverter case, on which a case door, a water removal bin door and a dust removal bin door are installed in sequence from top to bottom; the case door is inside an equipment installation bin, in which an inverter body is installed; the water removal bin door is inside a water removal bin, in which a water absorbent is provided; the dust removal bin door is inside a dust removal bin, in which a dust removal box is installed; an air inlet is provided on the side of the dust removal bin, a first dustproof net is provided at the air inlet, and a dust removal assembly located on the inverter case is provided on the outer side of the first dustproof net; an air outlet is provided on the upper side of the inverter case, a second dustproof net is provided at the air outlet, and a first exhaust fan is installed on the inner side of the second dustproof net.
[0006] Preferably, a temperature sensor and an alarm are installed in the equipment installation compartment.
[0007] Preferably, the dust removal assembly includes a mounting plate fixed on the side wall of the inverter case, a servo motor is mounted on the mounting plate, a screw rod is connected to the output end of the servo motor, and the bottom of the screw rod is connected to a bearing seat fixed on the side wall of the inverter case; a brush rod is sleeved on the screw rod, a cleaning brush is provided at the bottom of the brush rod and is in close contact with the first dustproof net, and guide rails located on both sides of the air inlet are connected to the two sides of the brush rod.
[0008] Preferably, the dust removal box is vertically filled with the dust removal bin, a dust absorber is provided in the dust removal box, and openings are provided on the sides and top of the dust removal box; a first isolation plate is provided between the dust removal bin and the water removal bin, and a third dust-proof net is installed on the first isolation plate and is located above the top opening of the dust removal box.
[0009] Preferably, a dust shield plate vertically mounted on the first isolation plate is provided between the dust removal box and the air inlet.
[0010] Preferably, an air path distributor is installed in the dewatering bin, and the air path distributor is spaced from the bottom of the dewatering bin; the water absorbent is arranged above the air path distributor, and a second isolation plate is provided between the dewatering bin and the equipment installation bin, and a left exhaust duct and a right exhaust duct are respectively provided on the left and right sides of the second isolation plate.
[0011] Preferably, a fourth dustproof net is provided at the bottom of the left exhaust duct and the bottom of the right exhaust duct.
[0012] Preferably, a second row of fans are installed in both the left exhaust duct and the right exhaust duct.
[0013] Preferably, an observation window is provided on the box door, and a handle is installed on one side of the observation window.
[0014] Preferably, a base is installed at the bottom of the inverter housing.
[0015] Therefore, the utility model adopts the above-mentioned motor inverter, which can effectively dissipate the heat of the internal components of the inverter, and at the same time effectively reduce the contact between dust and water vapor in the air and the internal components of the inverter, which is beneficial to improving the service life of the inverter.
[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a motor frequency converter of the utility model;
[0018] Figure 2 The utility model is a schematic diagram of the internal structure of a motor frequency converter embodiment.
[0019] Reference numerals
[0020] 1. Inverter box; 2. Box door; 21. Observation window; 22. Handle; 23. Equipment installation compartment; 3. Water removal compartment door; 31. Water removal compartment; 32. Air path distributor; 33. Water absorbent; 34. Second isolation board; 35. Left exhaust duct; 36. Right exhaust duct; 37. Fourth dust screen; 38. Second exhaust fan; 4. Dust removal compartment door; 41. Dust shield; 42. Dust removal box; 43. Dust absorbent; 44. First isolation Plate; 45, third dust screen; 46, dust removal bin; 5, base; 6, air inlet; 61, first dust screen; 7, air outlet; 71, second dust screen; 72, first exhaust fan; 73, protective cover; 81, mounting plate; 82, servo motor; 83, brush rod; 84, guide rail; 85, screw rod; 86, bearing seat; 9, temperature sensor; 10, alarm; 11, inverter body; 12, equipment fixing plate. DETAILED DESCRIPTION
[0021] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.
[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0023] Example
[0024] like Figure 1 As shown, the utility model provides a motor inverter, including an inverter case 1, on which a case door 2, a water removal chamber door 3 and a dust removal chamber door 4 are installed in sequence from top to bottom, and a base 5 is installed at the bottom of the inverter case 1.
[0025] Inside the box door 2 is an equipment installation compartment 23, in which an equipment fixing plate 12 is provided, and an inverter body 11 is installed on the equipment fixing plate 12. A temperature sensor 9 and an alarm 10 are installed on the inner wall of the equipment installation compartment 23. The temperature sensor 9 can monitor the temperature value inside the equipment installation compartment 23 in real time. When the monitored temperature value exceeds the safe temperature value, the alarm 10 sounds an alarm to remind the operator to handle it in time.
[0026] The box door 2 is provided with an observation window 21, which is convenient for observing the operation of the inverter body 11 inside the equipment installation compartment 23. A handle 22 is installed on one side of the observation window 21, which is convenient for opening the box door 2.
[0027] The dust removal bin 46 is inside the dust removal bin door 3 , an air inlet 6 is provided on the side of the dust removal bin 46 , a first dustproof net 61 is provided at the air inlet 6 , and a dust removal component located on the inverter housing 1 is provided outside the first dustproof net 61 .
[0028] The dust removal assembly includes a mounting plate 81 fixed on the side wall of the inverter housing 1, a servo motor 82 is mounted on the mounting plate 81, a screw rod 85 is connected to the output end of the servo motor 82, and the bottom of the screw rod 85 is connected to a bearing seat 86 fixed on the side wall of the inverter housing 1. A brush rod 83 is sleeved on the screw rod 85, and the servo motor 82 drives the screw rod 85 to rotate forward and reversely, so that the brush rod 83 can move up and down on the screw rod 85. A cleaning brush is provided at the bottom of the brush rod 83 and is in close contact with the first dustproof net 61. During the up and down movement of the brush rod 83, the first dustproof net 61 can be cleaned and the dust adhering to the first dustproof net 61 can be brushed off. The two sides of the brush rod 83 are connected to guide rails 84 located on both sides of the air inlet 6, which are used to ensure that the brush rod 83 can move smoothly in parallel and prevent the brush rod 83 from tilting during the movement.
[0029] A dust box 42 is installed in the dust bin 46, and the dust box 42 vertically fills the dust bin 46. A dust absorber 43 is provided in the dust box 42, which can effectively absorb dust in the airflow. A dust shield 41 vertically installed on the first isolation plate 44 is provided between the dust box 46 and the air inlet 6, and a channel is left between the dust shield 41 and the bottom of the dust bin 46 for airflow to pass through. The dust shield 41 can block larger dust particles entering the dust bin 46 and make them fall to the bottom of the dust bin 46, which can increase the service life of the dust absorber 43 to a certain extent.
[0030] The dust box 2 is provided with openings on the side and top, so that external air can flow in from the side of the dust box 2 and flow out from the top of the dust box 2, ensuring that the dust box 2 effectively filters dust particles in the air. A first isolation plate 44 is provided between the dust removal bin 46 and the water removal bin 31, and a third dustproof net 45 located above the top opening of the dust box 42 is installed on the first isolation plate 44, which can further filter dust particles in the air.
[0031] The dewatering chamber door 3 contains a dewatering chamber 31, and an air path distributor 32 is installed in the dewatering chamber 31. The air path distributor 32 is spaced apart from the bottom of the dewatering chamber 31, so that air can pass through the air path distributor 32 more evenly. A water absorbent 33 is provided above the air path distributor 32, and air passes through the water absorbent 33, which can effectively filter out water vapor carried in the air.
[0032] A second isolation plate 34 is provided between the dewatering chamber 31 and the equipment installation chamber 23. A left exhaust duct 35 and a right exhaust duct 36 are provided on the left and right sides of the second isolation plate 34, respectively. A fourth dustproof net 37 is provided at the bottom of the left exhaust duct 35 and the right exhaust duct 36 to filter dust in the air again. A second exhaust fan 38 is installed in the left exhaust duct 35 and the right exhaust duct 36 to effectively improve the air intake efficiency.
[0033] An air outlet 7 is provided on the upper side of the inverter housing 1, and a second dustproof net 71 is provided at the air outlet 7, which can effectively prevent external dust from entering the inverter housing 1 through the air outlet 7. A first exhaust fan 72 is installed inside the second dustproof net 71, which can accelerate the discharge of high-temperature gas inside the equipment installation compartment 23, which is beneficial to improving the heat dissipation efficiency.
[0034] Therefore, the utility model adopts the above-mentioned motor inverter, which can effectively dissipate the heat of the internal components of the inverter, and at the same time effectively reduce the contact between dust and water vapor in the air and the internal components of the inverter, which is beneficial to improving the service life of the inverter.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.
Claims
1. A motor frequency converter, characterized in that: It includes a frequency converter case, on which a case door, a water removal bin door and a dust removal bin door are sequentially installed from top to bottom; the case door is inside an equipment installation bin, in which a frequency converter body is installed; the water removal bin door is inside a water removal bin, in which a water absorbent is provided; the dust removal bin door is inside a dust removal bin, in which a dust removal box is installed; an air inlet is provided on the side of the dust removal bin, a first dustproof net is provided at the air inlet, a dust removal assembly located on the frequency converter case is provided on the outer side of the first dustproof net; an air outlet is provided on the upper side of the frequency converter case, a second dustproof net is provided at the air outlet, and a first exhaust fan is installed on the inner side of the second dustproof net.
2. A motor frequency converter according to claim 1, characterized in that: A temperature sensor and an alarm are installed in the equipment installation compartment.
3. The motor frequency converter according to claim 1, characterized in that: The dust removal assembly includes a mounting plate fixed on the side wall of the inverter case, a servo motor is mounted on the mounting plate, a screw rod is connected to the output end of the servo motor, and the bottom of the screw rod is connected to a bearing seat fixed on the side wall of the inverter case; a brush rod is sleeved on the screw rod, a cleaning brush is provided at the bottom of the brush rod and is in close contact with the first dustproof net, and guide rails located on both sides of the air inlet are connected to both sides of the brush rod.
4. The motor frequency converter according to claim 1, characterized in that: The dust removal box is vertically filled with the dust removal bin, a dust absorber is provided in the dust removal box, and openings are provided on the sides and top of the dust removal box; a first isolation plate is provided between the dust removal bin and the water removal bin, and a third dust-proof net is installed on the first isolation plate and is located above the top opening of the dust removal box.
5. A motor frequency converter according to claim 4, characterized in that: A dust shield plate vertically mounted on the first isolation plate is provided between the dust removal box and the air inlet.
6. The motor frequency converter according to claim 1, characterized in that: An air path distributor is installed in the dewatering bin, and there is a gap between the air path distributor and the bottom of the dewatering bin; the water absorbent is arranged above the air path distributor, and a second isolation plate is provided between the dewatering bin and the equipment installation bin, and a left exhaust duct and a right exhaust duct are respectively provided on the left and right sides of the second isolation plate.
7. The motor frequency converter according to claim 6, characterized in that: The bottoms of the left exhaust duct and the right exhaust duct are both provided with a fourth dustproof net.
8. The motor frequency converter according to claim 6, characterized in that: A second row of fans is installed in both the left exhaust duct and the right exhaust duct.
9. The motor frequency converter according to claim 1, characterized in that: An observation window is provided on the box door, and a handle is installed on one side of the observation window.
10. The motor frequency converter according to claim 1, characterized in that: A base is installed at the bottom of the frequency converter box.