Dustproof air guide shell of frequency converter

Abstract

The utility model provides a dustproof air guide housing of a frequency converter. The dustproof air guide housing comprises a hollow cavity formed by peripheral side walls of an electric cabinet; the frequency converter shell is arranged at the left side or right side vertex angle of the top of the electric cabinet and is arranged in the cavity through bolt connection; the exhaust module is arranged on one side, close to the inner wall of the bottom of the cavity, of the top of the frequency converter shell through bolt connection; the air inlet module is arranged on one side, far away from the bottom inner wall of the cavity, of the top of the frequency converter shell through bolt connection; the bottom of the air guide shell is arranged in the cavity through bolt connection, and one side of the air guide shell is connected with one side, close to the exhaust module, of the frequency converter shell through bolts; the reverse-blade fan rotates to dissipate heat of a frequency converter component on one side of the frequency converter shell; air flow subjected to heat exchange is mixed with air injected into the cavity through the first air inlet key groove type through hole and the second air inlet key groove type through hole to form mixed flow, and the mixed flow dissipates heat of frequency converter components on the other side in the frequency converter shell through heat exchange and then is discharged out of the cavity through the air outlet groove.

Description

Technical Field

[0001] The utility model relates to the field of electric cabinets, in particular to the technical field of heat dissipation of frequency converters, and specifically is a dustproof and air-guiding shell of a frequency converter. Background Art

[0002] The inverter is generally installed vertically. Due to the structure of the inverter, its cooling fan is generally at the top, and the heat is blown directly into the electrical cabinet. The fan is generally exposed to the outside without any filter protection. The area near the fan is also directly hollowed out. A large amount of dust will accumulate on the fan and around the inverter cabinet when it works for a long time, and even a large amount of dust will accumulate inside the inverter. At the same time, there is a risk of small parts such as screws falling into the inverter from the hollow part on the top, affecting the working efficiency of the inverter and increasing safety hazards. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a dust-proof and air-guiding housing for a frequency converter, so as to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a frequency converter dust-proof and air-guiding housing, comprising:

[0005] An electric cabinet 1, wherein the electric cabinet 1 is composed of four side walls forming a hollow cavity 11;

[0006] A frequency converter housing 2, wherein the frequency converter housing 2 is arranged at a left or right corner of the top of the electric cabinet 1, and the frequency converter housing 2 is arranged in the cavity 11 by bolt connection;

[0007] An exhaust module 3, which is arranged on the top of the inverter housing 2 and close to the bottom inner wall of the cavity 11 by bolt connection;

[0008] An air inlet module 4, which is arranged on the top of the inverter housing 2 at a side away from the bottom inner wall of the cavity 11 through bolt connection;

[0009] The air guide housing 5 has its bottom connected in the cavity 11 by bolts, and one side of the air guide housing 5 is connected to the side of the inverter housing 2 close to the exhaust module 3 by bolts.

[0010] According to the preferred embodiment, the inverter housing 2 is a hollow quadrilateral box, and a No. 1 air inlet key slot type through hole 21 is arranged in an array with equal spacing on one side of the bottom inner wall of the cavity 11 near the bottom end of the inverter housing 2, and a preset slot 22 for the inverter connection port is preset on one side of the bottom end of the inverter housing 2 away from the No. 1 air inlet key slot type through hole 21, and a No. 2 air inlet key slot type through hole 23 is arranged in an array with equal spacing on the left and right sides of the bottom of the inverter housing 2.

[0011] According to the preferred embodiment, the exhaust module 3 includes:

[0012] A square groove 31 is provided on the top of the inverter housing 2 and close to the bottom inner wall of the cavity 11;

[0013] Exhaust holes 32, the exhaust holes 32 are arranged at equal intervals at the bottom of the square groove 31;

[0014] The positive blade fans 33 are connected by bolts and are arranged at equal intervals at the bottom of the square groove 31 and outside the exhaust hole 32.

[0015] According to the preferred solution, the air inlet module 4 includes:

[0016] An air inlet slot 41, wherein the air inlet slot 41 is symmetrically opened on one side of the top of the inverter housing 2 away from the square slot 31;

[0017] A reverse blade fan 42, wherein the bottom of the reverse blade fan 42 is clamped in the air inlet slot 41, and the top of the reverse blade fan 42 is connected to the top side wall of the inverter housing 2 by bolts;

[0018] The trapezoidal cover 43 is connected with the cover by bolts and is arranged on the top of the inverter housing 2 and outside the air inlet slot 41. The trapezoidal cover 43 has three air inlet key slot-shaped through holes 44 at equal intervals on the left and right sides.

[0019] According to a preferred embodiment, the air inlet slot 41 is a square slot.

[0020] According to a preferred embodiment, an air outlet slot 12 is provided on the top of the electric cabinet 1 near the positive blade fan 33 .

[0021] According to the preferred embodiment, the bottom of the air guide shell 5 is communicated with the air inlet slot 41, and the top of the air guide shell 5 is communicated with the air outlet slot 12. The air guide shell 5 includes: an L-shaped side panel 51 and an arc-shaped cover plate 52. The L-shaped side panel 51 is arranged on the left and right sides of the top of the air guide shell 5 close to the direction of the main blade fan 33. One side of the L-shaped side panel 51 is connected to the inner wall of the electric cabinet 1 by bolts. The arc-shaped cover plate 52 is covered on the side of the L-shaped side panel 51 away from the air inlet slot 41. The top of the arc-shaped cover plate 52 is connected to the inner wall of the electric cabinet 1 by bolts. The center and bottom of the arc-shaped cover plate 52 are connected to the side of the L-shaped side panel 51 away from the air inlet slot 41 by bolts.

[0022] The utility model adopts an electric cabinet, a frequency converter housing, an exhaust module, an air inlet module and an air guide housing. The reverse blade fan in the air inlet module rotates, and the air in the cavity is injected into the frequency converter housing through the No. 3 air inlet key slot through hole to form an air flow, and the frequency converter components on one side of the frequency converter housing are cooled by heat exchange. The positive blade fan in the exhaust module rotates, and the air flow mixed with the air in the cavity injected by the No. 1 air inlet key slot through hole and the No. 2 air inlet key slot through hole through heat exchange forms a mixed air flow, which cools the frequency converter components on the other side of the frequency converter housing by heat exchange, and then is discharged from the cavity through the air outlet slot, and the hot air is discharged to the outside of the electric cabinet; the following beneficial effects are achieved:

[0023] (1) The trapezoidal cover and air guide housing prevent dust or foreign matter from entering the inverter from above;

[0024] (2) Reducing the heat dissipation pressure inside the electrical cabinet can reduce the number of cooling fans in the electrical cabinet, reduce energy consumption, reduce the noise when the fans are running, and improve the quietness of the equipment.

[0025] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The display is a three-dimensional structural schematic diagram of the utility model, wherein the electric cabinet is a partial schematic diagram of one side where the inverter is installed;

[0027] Figure 2 Shown is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0028] Figure 3 Shown is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0029] Figure 4 The display is an enlarged schematic diagram of the three-dimensional structure of the inverter housing in the utility model;

[0030] Figure 5 It shows an enlarged schematic diagram of the three-dimensional structure of the exhaust module and the air inlet module in the utility model;

[0031] Description of symbols

[0032] 1. Electric cabinet; 11. Cavity; 12. Air outlet slot;

[0033] 2. Inverter housing; 21. No. 1 air inlet key slot through hole; 22. Inverter connection port preset slot; 23. No. 2 air inlet key slot through hole;

[0034] 3. Exhaust module; 31. Square slot for making way; 32. Exhaust hole; 33. Positive blade fan;

[0035] 4. Air inlet module; 41. Air inlet slot; 42. Reverse blade fan; 43. Trapezoidal cover; 44. No. 3 air inlet key slot through hole;

[0036] 5. air guide housing; 51. L-shaped side panel; 52. arc-shaped cover plate; DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0039] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" 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" 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.

[0040] The utility model proposes a frequency converter dustproof and air-guiding casing, which is used in the frequency converter dust-proof and heat-dissipating process. The utility model does not limit the specifications and types of the frequency converter, but the structure of the electric cabinet 1, the frequency converter casing 2, the exhaust module 3, the air inlet module 4 and the air-guiding casing 5 is particularly suitable for improving the heat dissipation efficiency of the frequency converter, preventing dust from accumulating in the electric cabinet or loose reinforcement bolts in the electric cabinet body from falling into the frequency converter, affecting the working efficiency of the frequency converter, and even causing the frequency converter to short-circuit or burn out.

[0041] In general, the inverter dustproof and wind-guiding housing proposed in the utility model mainly includes: an electric cabinet 1, an inverter housing 2, an exhaust module 3, an air inlet module 4 and an air-guiding housing 5, which can be seen in Figure 1 , which shows the arrangement relationship of the electric cabinet 1, the inverter housing 2, the exhaust module 3, the air inlet module 4 and the air guide housing 5.

[0042] When the inverter dust-proof and air-guiding housing proposed by the utility model is actually used, the reverse-blade fan 42 in the air inlet module 4 rotates, and the air in the cavity 11 is injected into the inverter housing 2 through the No. 3 air inlet key slot type through hole 44 to form an airflow, and the inverter components on the side of the inverter housing 2 away from the air outlet slot 12 are cooled by heat exchange, and the positive-blade fan 33 in the exhaust module 3 rotates, and the airflow that has undergone heat exchange is mixed with the air in the cavity 11 injected by the No. 1 air inlet key slot type through hole 21 and the No. 2 air inlet key slot type through hole 23 to form a mixed airflow, which dissipates the heat of the inverter components on the other side of the inverter housing 2 through heat exchange, and then is discharged from the cavity 11 through the air outlet slot 12, and the hot air is discharged to the outside of the electric cabinet 1.

[0043] The above-mentioned inverter housing 2 is arranged at the left or right top corner of the top of the electric cabinet 1. The inverter housing 2 is arranged in the cavity 11 by bolt connection. The inverter housing 2 is a hollow quadrilateral box. A No. 1 air inlet key slot type through hole 21 is arranged in an array with equal spacing on one side of the bottom inner wall of the cavity 11 near the bottom end of the inverter housing 2. A preset slot 22 for the inverter connection port is preset on the side of the bottom end of the inverter housing 2 away from the No. 1 air inlet key slot type through hole 21. A No. 2 air inlet key slot type through hole 23 is arranged in an array with equal spacing on the left and right sides of the bottom of the inverter housing 2.

[0044] The exhaust module 3 is bolted to the top of the inverter housing 2 on one side of the bottom inner wall of the cavity 11, and the exhaust module 3 includes a square groove 31, exhaust holes 32 and a positive-blade fan 33, wherein the square groove 31 is opened on the top of the inverter housing 2 on one side of the bottom inner wall of the cavity 11, exhaust holes 32 are evenly spaced at the bottom of the square groove 31, and positive-blade fans 33 are evenly spaced at the bottom of the square groove 31 near the outside of the exhaust holes 32 through bolt connections.

[0045] The above-mentioned air inlet module 4 is arranged on the side of the top of the inverter housing 2 away from the bottom inner wall of the cavity 11 through bolt connection, and the air inlet module 4 includes: an air inlet slot 41, a reverse blade fan 42 and a trapezoidal cover 43, wherein the air inlet slot 41 is symmetrically opened on the side of the top of the inverter housing 2 away from the yielding square slot 31, the bottom of the reverse blade fan 42 is stuck in the air inlet slot 41, and the top of the reverse blade fan 42 is connected to the top side wall of the inverter housing 2 by bolts to inject air into the inverter housing 2, and a trapezoidal cover 43 is covered by bolts on the outside of the air inlet slot 41 at the top of the inverter housing 2, and three air inlet key slot-type through holes 44 are opened at equal intervals on the left and right sides of the trapezoidal cover 43 to prevent dust or foreign matter on the top of the cavity from falling into the inverter.

[0046] An air outlet slot 12 is provided on the top of the electric cabinet 1 near the positive blade fan 33 , and an exhaust port is provided separately for the inverter in the electric cabinet 1 , so as to separate the overall heat dissipation module inside the electric cabinet 1 from the heat dissipation module of the inverter, thereby reducing the heat dissipation pressure inside the electric cabinet 1 .

[0047] The bottom of the air guide housing 5 is connected by bolts and arranged in the cavity 11, one side of the air guide housing 5 is connected to the side of the inverter housing 2 close to the exhaust module 3 by bolts, the bottom of the air guide housing 5 is communicated with the air inlet slot 41, and the top of the air guide housing 5 is communicated with the air outlet slot 12. The air guide housing 5 includes: an L-shaped side panel 51 and an arc-shaped cover plate 52. The L-shaped side panel 51 is arranged on the left and right sides of the top of the air guide housing 5 close to the positive blade fan 33. One side of the L-shaped side panel 51 is connected to the inner wall of the electric cabinet 1 by bolts, and the arc-shaped cover plate 52 is covered on the side of the L-shaped side panel 51 away from the air inlet slot 41. The top of the arc-shaped cover plate 52 is connected to the inner wall of the electric cabinet 1 by bolts, and the center and bottom of the arc-shaped cover plate 52 are connected to the side of the L-shaped side panel 51 away from the air inlet slot 41 by bolts to prevent dust or foreign matter on the top of the cavity from falling into the inverter.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A dust-proof and air-guiding housing for a frequency converter, characterized in that: include: An electric cabinet (1), wherein the electric cabinet (1) is composed of four side walls forming a hollow cavity (11); A frequency converter housing (2), the frequency converter housing (2) being arranged at a left or right top corner of the top of the electric cabinet (1), and the frequency converter housing (2) being arranged in the cavity (11) by bolt connection; An exhaust module (3), the exhaust module (3) being arranged on a side of the top of the inverter housing (2) close to the bottom inner wall of the cavity (11) by means of bolt connection; An air inlet module (4), the air inlet module (4) being arranged on a side of the top of the inverter housing (2) away from the bottom inner wall of the cavity (11) by means of bolt connection; An air guide housing (5), the bottom of which is arranged in the cavity (11) by means of bolt connection, and one side of the air guide housing (5) is connected to a side of the inverter housing (2) close to the exhaust module (3) by means of bolts.

2. The inverter dust-proof and air-guiding housing according to claim 1, characterized in that: The inverter housing (2) is in the form of a hollow quadrilateral box, and a first air inlet key slot-shaped through hole (21) is arranged in an array at equal intervals on a side of the bottom end of the inverter housing (2) close to the bottom inner wall of the cavity (11), a inverter connection port preset slot (22) is preset on a side of the bottom end of the inverter housing (2) away from the first air inlet key slot-shaped through hole (21), and a second air inlet key slot-shaped through hole (23) is arranged in an array at equal intervals on the left and right sides of the bottom of the inverter housing (2).

3. The inverter dust-proof and air-guiding housing according to claim 2, characterized in that: The exhaust module (3) comprises: A square groove (31) for making way, wherein the square groove (31) for making way is provided on one side of the top of the inverter housing (2) close to the bottom inner wall of the cavity (11); Exhaust holes (32), the exhaust holes (32) are arranged at equal intervals at the bottom of the square groove (31); The positive blade fan (33) is arranged at equal intervals at the bottom of the square groove (31) and outside the exhaust hole (32) through bolt connection.

4. The inverter dust-proof and air-guiding housing according to claim 3, characterized in that: The air inlet module (4) comprises: An air inlet slot (41), the air inlet slot (41) being symmetrically opened on a side of the top of the inverter housing (2) away from the square slot (31); A reverse blade fan (42), wherein the bottom of the reverse blade fan (42) is clamped in the air inlet slot (41), and the top of the reverse blade fan (42) is connected to the top side wall of the inverter housing (2) via bolts; A trapezoidal cover (43) is provided on the top of the inverter housing (2) and outside the air inlet slot (41) through a bolt connection cover, and three air inlet key slot-shaped through holes (44) are provided at equal intervals on the left and right sides of the trapezoidal cover (43).

5. The inverter dust-proof and air-guiding housing according to claim 4, characterized in that: An air outlet slot (12) is provided on one side of the top of the electric cabinet (1) close to the positive blade fan (33).

6. The inverter dust-proof and air-guiding housing according to claim 5, characterized in that: The bottom of the air guide housing (5) is in communication with the air inlet slot (41), and the top of the air guide housing (5) is in communication with the air outlet slot (12). The air guide housing (5) comprises: an L-shaped side panel (51) and an arc-shaped cover panel (52). The L-shaped side panel (51) is arranged on the left and right sides of the top of the air guide housing (5) close to the direction of the positive blade fan (33). One side of the L-shaped side panel (51) is connected to the inner wall of the electric cabinet (1) by bolts. The arc-shaped cover panel (52) is arranged on the side of the L-shaped side panel (51) away from the air inlet slot (41). The top of the arc-shaped cover panel (52) is connected to the inner wall of the electric cabinet (1) by bolts. The center and bottom of the arc-shaped cover panel (52) are connected to the side of the L-shaped side panel (51) away from the air inlet slot (41) by bolts.

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