CN205407561U - Elevator frequency converter shell structure - Google Patents

Abstract

The utility model discloses a casing structure of an elevator frequency converter, which comprises a main casing, the main casing includes an upper casing cover and a lower casing with an upper end opening, a vertical partition and an air guide pipe are arranged inside the main casing, and the vertical partition connects the The inside of the main shell is divided into a circuit cavity and an air intake cavity. The lower shell is provided with a shell air intake hole, the main shell is provided with a shell exhaust hole, and the air intake cavity is provided with a cyclone cone. The upper end of the cyclone cone is open. Larger than the opening at the lower end, the cyclone cone is provided with a tangential air intake pipe, which is connected to the air intake hole of the shell, one end of the air guide tube is in the circuit cavity, the other end of the air guide tube is connected with the inside of the air intake cavity, and the air guide tube is at the inlet One end in the air cavity is connected with the upper opening of the cyclone cone, and the air guiding impeller is arranged in the air guiding tube. The beneficial effect of the utility model is that it can effectively conduct internal air guide and heat dissipation, has a strong heat dissipation capability, can ensure the cleanliness of the heat dissipation airflow, reduces dust accumulation of circuit electronic components, and is beneficial to improving the overall service life of the elevator frequency converter and its working process. stability.

Description

A shell structure of an elevator frequency converter

technical field

The utility model belongs to the technical field of elevator frequency converters, in particular to an elevator frequency converter shell structure.

Background technique

Elevator frequency converter is a common frequency converter, which has an external shell, internal circuit board, controller and other structures. Due to the presence of circuit electronic components, the temperature inside the elevator frequency converter 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, and poor airflow and excessive dust accumulation will result in poor heat dissipation and internal The large accumulated heat is an important factor that causes the internal temperature of the elevator inverter to be high. In the current outer shell structure of the elevator inverter, there are still some deficiencies in terms of effective heat dissipation, control of airflow cleanliness, reduction of dust accumulation, and protection of the external environment of circuit electronic components.

Utility model content

The utility model aims to overcome the deficiencies in the prior art, and provides a frequency conversion elevator with reasonable structure, effective internal air guide and heat dissipation, strong heat dissipation capability, cleanliness of heat dissipation airflow, and reduction of dust accumulation of circuit electronic components. device shell structure.

In order to achieve the above object, the utility model adopts the following technical solutions:

A shell structure for an elevator frequency converter, comprising a main shell, the main shell includes an upper shell cover and a lower shell with an upper end opening, the upper shell cover seals the upper end opening of the lower shell and is detachably connected to the lower shell , the main housing is provided with a vertical partition and an air duct, the vertical partition divides the interior of the main housing into a circuit chamber and an air intake chamber, the lower housing is provided with a shell air intake hole, and the main housing is provided with at least A shell exhaust hole connected with the circuit chamber, the air intake chamber is provided with a cyclone cone, the upper and lower ends of the cyclone cone are open and the upper opening is larger than the lower opening, the cyclone cone is provided with a tangential air inlet pipe, and the tangential inlet One end of the air pipe is connected to the cyclone cone, and the other end of the tangential air pipe is connected to the air intake hole of the shell. One end in the air chamber is connected to the upper opening of the cyclone cone, and the air guide pipe is provided with a wind guide impeller driven by a motor.

Preferably, the cyclone cone is provided with a filter mesh tube, which separates the tangential air intake pipe from the upper opening of the cyclone cone tube, and the filter mesh tube is provided with a plurality of filter holes.

Preferably, the bottom plate of the lower housing includes a bottom plate body and a cover plate, the bottom plate body is provided with a cover plate hole corresponding to the cover plate, and the cover plate is located in the cover plate hole and is clamped with the bottom plate body , the cover plate completely seals the lower end opening of the cyclone cone.

As a preference, the cyclone cone is provided with an inner ash tube with both upper and lower ends open, the lower end of the filter screen tube is provided with an ash drop port, the upper end opening of the inner ash tube is docked with the ash drop port, and the lower end of the inner ash tube is provided with a sealing The bottom cover of the lower end opening of the inner ash tube is held, and the bottom cover is threadedly connected with the lower end opening of the inner ash tube.

Preferably, the upper case cover and the lower case are engaged with each other or fixed by screws.

The beneficial effect of the utility model is that the structure is reasonable, the internal wind guide and heat dissipation can be effectively carried out, the heat dissipation ability is strong, and the cleanliness of the heat dissipation airflow can be guaranteed, the dust accumulation of electronic components in the circuit can be reduced, and the overall service life of the elevator frequency converter can be improved. Stability of the working process.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is an enlarged view of A in Fig. 1 .

In the figure: main casing 1, upper casing cover 11, lower casing 12, cover plate 121, circuit chamber 1a, air intake chamber 1b, casing air inlet 1c, casing exhaust hole 1d, vertical partition 2, guide Trachea 3, wind guiding impeller 31, cyclone cone tube 4, tangential air intake pipe 41, filter screen tube 42, inner ash tube 43, bottom cover 44.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

In the embodiment shown in Fig. 1, Fig. 2, a kind of elevator frequency converter casing structure, comprises main casing 1, and main casing comprises upper casing cover 11, the lower casing 12 of upper end opening, and upper casing cover seals The upper end of the lower housing is open and detachably connected with the lower housing. The main housing is provided with a vertical partition 2 and an air duct 3. The vertical partition divides the interior of the main housing into a circuit chamber 1a and an air intake chamber. 1b, the lower casing is provided with a casing air inlet 1c, the main casing is provided with at least one casing exhaust hole 1d communicating with the circuit chamber, and the air inlet chamber is provided with a cyclone cone 4 in the shape of a circular frustum, and the cyclone cone The upper and lower ends of the barrel are open and the opening at the upper end is larger than the opening at the lower end. The cyclone cone is provided with a tangential air intake pipe 41 for tangential air intake into the cyclone cone. One end of the tangential air intake pipe is connected to the cyclone cone. The other end is connected to the air inlet of the shell, one end of the air guide tube is in the circuit cavity, the other end of the air guide tube passes through the vertical partition and communicates with the inside of the air intake cavity, and the end of the air guide tube in the air intake cavity is open to the upper end of the cyclone cone Docking, the air guiding impeller 31 driven by the motor is arranged in the air guiding pipe, and the air guiding direction of the air guiding impeller is from the air guiding pipe to the circuit chamber. A filter screen tube 42 is arranged inside the cyclone cone tube, and the filter screen tube separates the tangential air intake pipe from the upper opening of the cyclone cone tube, and the filter screen tube is provided with a plurality of filter holes. The circuit cavity is used to install and fix various circuit electronic components.

There will inevitably be dust and impurities in the external air. Under the action of the wind guide impeller, the external air enters the cyclone cone in a tangential or approximately tangential way from the shell air inlet and the tangential air intake pipe, and is discharged in the cyclone. A swirling flow is formed in the cone, relatively heavy (bigger) dust and impurities adhere to the wall, and then gradually fall due to gravity, and the air flow enters the dust cup through the filter holes (if there is no filter mesh structure, the air flow will flow from Back pressure in the middle, upward to the upper opening of the cyclone cone), and upward to the upper opening of the cyclone cone, and then to the circuit cavity through the air duct, cooling and heat dissipation of the circuit electronic components in the circuit cavity, and finally through the exhaust hole of the shell discharge. In this way, the wind guide impeller can be used to conduct strong and effective air guide and heat dissipation, and the heat dissipation airflow is physically purified, which can greatly reduce the dust accumulation of electronic components in the circuit, and prevent poor heat dissipation caused by excessive dust accumulation.

The bottom plate of the lower housing includes a bottom plate body and a cover plate 121. The base plate body is provided with a cover plate hole corresponding to the cover plate, and the cover plate is located in the cover plate hole and is clamped with the base plate body. The cover plate completely seals the opening at the lower end of the cyclone cone. After working for a period of time, there is no need to disassemble the internal structure, and the dust and impurities can be dumped and cleaned by directly removing the cover plate.

The cyclone cone tube is provided with an inner ash tube 43 with both upper and lower ends open. The lower end of the filter screen tube is provided with an ash drop port. The bottom cover 44 of the lower end opening of the ash tube is threadedly connected between the bottom cover and the lower end opening of the inner ash tube. The outside of the inner ash tank is equivalent to a large ash bin, and the inside is generally "coarse ash" (large particle dust impurities), and the inside of the inner ash tank is "fine ash" (small particle dust impurities). When it is necessary to dump and clean the dust and impurities inside the inner ash tank, the bottom cover can be directly unscrewed for processing, which is convenient and quick. Moreover, the separation of "coarse ash" and "fine ash" is beneficial to recycling and post-processing.

The upper case cover and the lower case are engaged with each other or fixed by screws. It is convenient for disassembly, replacement, cleaning and maintenance.

Claims (5)

1. A kind of elevator frequency converter shell structure, comprises main shell, and main shell comprises the lower shell of upper shell cover, upper end opening, and upper shell cover seals the upper end opening of lower shell and can be connected with the lower shell The disassembly connection is characterized in that the main housing is provided with a vertical partition and an air duct, the vertical partition divides the interior of the main housing into a circuit chamber and an air intake chamber, and the lower housing is provided with a shell air intake hole, the main housing The casing is provided with at least one shell exhaust hole connected with the circuit chamber, and the air intake chamber is provided with a cyclone cone, the upper and lower ends of the cyclone cone are open and the opening at the upper end is larger than the opening at the lower end, and the cyclone cone is provided with a tangential Air intake pipe, one end of the tangential air intake pipe is connected to the cyclone cone, the other end of the tangential air intake pipe is connected to the air intake hole of the shell, one end of the air guide pipe is in the circuit cavity, and the other end of the air guide pipe passes through the vertical partition and communicates with the inside of the air intake chamber , one end of the air guide pipe in the air intake cavity is docked with the upper opening of the cyclone cone, and the air guide pipe is provided with a wind guide impeller driven by a motor. 2. The shell structure of a frequency converter for an elevator according to claim 1, wherein a filter screen tube is arranged inside the cyclone cone tube, and the filter screen tube separates the tangential air intake pipe from the upper opening of the cyclone cone tube. Open, there are many filter holes on the filter cylinder. 3. The shell structure of an elevator frequency converter according to claim 1 or 2, wherein the bottom plate of the lower housing includes a bottom plate body and a cover plate, and the bottom plate body is provided with a corresponding cover plate. The sealing plate hole is located in the sealing plate hole and clamped with the base plate body, and the sealing plate completely seals the lower end opening of the cyclone cone. 4. The shell structure of a frequency converter for an elevator according to claim 2, characterized in that, the cyclone cone is provided with an inner ash cylinder with both upper and lower ends open, and the lower end of the filter cylinder is provided with an ash drop port, The upper opening of the inner ash tube is docked with the ash drop opening, and the lower end of the inner ash tube is provided with a bottom cover for sealing the lower opening of the inner ash tube, and the bottom cover is threadedly connected with the lower opening of the inner ash tube. 5. The shell structure of an elevator frequency converter according to claim 1, wherein the upper shell cover and the lower shell are engaged with each other or fixed by screws.