CN205901571U - Converter casing - Google Patents

Abstract

The utility model provides a converter casing, includes detachably matched's upper cover, lower cover, protecgulum, hou gai, zuogai, right side lid and inside baffle, protecgulum upper end is equipped with the wiring window, and the protecgulum lower extreme is equipped with main orifice, and the back lid is equipped with the air outlet, and the baffle has two, is baffle and baffle down respectively, goes up the baffle and arranges in proper order and divide into three cavity with the casing with baffle down, goes up the relative binding post of the cavity installation position other end and installs for the circuit board, the cavity is equipped with heating panel installation position down, for electric capacity installation position between heating panel installation position and the main orifice, the air outlet height is greater than heating panel installation position height, and the second baffle has oblique ascending water conservancy diversion portion, and the water conservancy diversion position is between heating panel installation position and air outlet. This scheme provides a converter casing, and it is more reasonable that the baffle is divided the casing inner space, and the casing radiating effect is better.

Description

Inverter housing

technical field

The utility model relates to the field of frequency converters, in particular to a frequency converter housing.

Background technique

Inverter 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 operating power supply. Usually, the inverter is installed in the inverter housing. The inverter housing includes the upper cover, The lower cover, front cover, rear cover, left cover, right cover and internal partitions, the inverter shell is generally detachable connection because the inverter needs to be repaired or replaced frequently, and the detachable connection method is usually the Each cover plate is screwed together.

The space divided by the partition inside the existing frequency converter housing is unreasonable, which is not conducive to gas flow, resulting in poor heat dissipation effect of the frequency converter housing.

Utility model content

The purpose of the utility model is to provide a frequency converter housing, the space inside the housing is more reasonably divided by the partition plate, and the cooling effect of the housing is better.

The above purpose of the utility model is achieved through the following technical solutions: a frequency converter housing, including a detachable upper cover, a lower cover, a front cover, a rear cover, a left cover, a right cover and an internal partition; The surface of the upper cover is provided with a control window, the upper end of the front cover is provided with a wiring window, the lower end of the front cover is provided with a main air vent, the left cover and the right cover are symmetrically distributed, and the rear cover is provided with an air outlet. The upper partition and the lower partition, the upper partition and the lower partition are arranged in sequence and the housing is divided into three chambers, and the three chambers are the upper chamber, the middle chamber and the lower chamber from top to bottom room;

The place where the upper chamber is close to the wiring window is the first wiring terminal installation position, and the other end of the upper chamber opposite to the wiring terminal installation position is the circuit board installation position;

The middle chamber is provided with a second connection terminal installation position, and the first connection terminal and the second connection terminal are connected through the connection gap provided on the upper partition;

The lower chamber is provided with a cooling plate mounting position below the second wiring terminal mounting position, and a capacitor mounting position is between the cooling plate mounting position and the main air vent; the height of the air outlet is greater than the height of the cooling plate mounting position, and the second partition has The obliquely upward air guiding part is located between the installation position of the cooling plate and the air outlet.

By adopting the above technical scheme, the heat generated by the terminals and the capacitor is mainly dissipated by the ventilation structure of the lower chamber; the cooling air enters from the main vent, passes through the capacitor installation position and the cooling plate installation position in turn, and then flows out from the air outlet; Design the deflector between the installation position of the cooling plate and the air outlet to be inclined upward, so that when the wind flows out from the installation position of the cooling plate, the cross section of the flow becomes larger gradually. In other words, the wind speed is faster when passing through the installation position of the cooling plate and the capacitor installation position, which improves the heat exchange efficiency and makes the heat dissipation effect of the shell better; at the same time, this design ensures a large space in the middle chamber, which is convenient for the corresponding components. arranged.

Preferably, the left cover and the right cover are provided with auxiliary vents, and the auxiliary vents communicate with the capacitor installation position of the lower chamber.

By adopting the above-mentioned technical scheme, the auxiliary vents cooperate with the main vents to allow air to enter from multiple directions, which has a good cooling effect and reduces air intake resistance.

Preferably, the second separator is provided with several capacitor fixing holes at the capacitor installation position.

By adopting the above technical solution, the capacitor fixing hole connects the middle chamber and the lower chamber, and the capacitor can be installed through the two chambers, making full use of the space of the two chambers and facilitating the fixing of the capacitor.

Preferably, the wiring notch is located between the first wiring terminal and the installation position of the circuit board.

By adopting the above technical solution, the copper sheet of the first connection terminal can reach the second connection terminal by the shortest path, which saves the material of the copper sheet and has higher space utilization.

Preferably, the rear cover is provided with an inner groove, the air outlet is arranged at the bottom of the inner groove, and fan installation holes are arranged around the air outlet.

By adopting the above technical solution, the fan as the source of flowing wind energy does not need to protrude from the casing, which reduces the probability of dust accumulation and collision damage.

Preferably, there are two air outlets arranged horizontally.

By adopting the above-mentioned technical scheme, the general frequency converter housing is square, and the width direction is longer. The installation of two fans not only makes full use of the space, but also can increase the wind energy and improve the heat dissipation effect.

Preferably, the upper baffle is provided with a sub-baffle at the installation position of the circuit board, the sub-baffle is higher than the upper surface of the upper baffle and its orthographic projection area falls within the installation position of the circuit board.

By adopting the above technical scheme, the sub-baffles provide installation space for some circuit boards with smaller sizes, avoiding the same arrangement on the surface of the upper partition, occupying a large surface area of the upper partition, and the layered design makes the space utilization of the upper chamber more efficient. higher.

Preferably, the upper cover is provided with lower flanges around, and the lower flanges respectively wrap the top side walls of the front cover, the rear cover, the left cover and the right cover.

By adopting the above technical solution, the lower flanging avoids exposure of the top of the cover plate on the other side which is relatively sharp, reduces the probability of injury to the maintenance personnel, and makes the use and handling safer.

In summary, compared with the prior art, the utility model has the following advantages:

1. Compact structure and high space utilization;

2. Better cooling effect;

3. Maintenance is safer.

Description of drawings

Fig. 1 is the overall structural diagram of housing;

Figure 2 is an exploded view of the housing;

Fig. 3 is a schematic diagram showing the internal structure of the housing by hiding the left cover and the right cover;

Fig. 4 is the front view of hiding the left cover;

Figure 5 is an exploded view of the internal structure of the housing;

FIG. 6 is an enlarged view of A in FIG. 1 .

Reference signs: 1, upper cover; 1a, control window; 1b, lower flange; 2, front cover; 2a, wiring window; 2b, main air vent; 3, left cover; 3a, auxiliary air vent; 4, rear Cover; 5. Lower cover; 6. Right cover; 7. Upper partition; 7a. Circuit board installation position; 8. Lower partition; 9. Sub-partition; 10. First terminal installation position; 11. Wiring gap ;12, Capacitor installation position; 12a, Capacitor fixing hole; 13, Second wiring terminal installation position; 14, Heat dissipation plate installation position; 15, Inner groove; 16, Air outlet; 17, Fan installation hole; 18, Air diversion Part; a, upper chamber; b, middle chamber; c, lower chamber.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A frequency converter housing, combined with Figure 1 and Figure 2, it can be seen that its overall shape is square, and the housing mainly includes an upper cover 1, a lower cover 5, a left cover 3, a right cover 6, a front cover 2 and a rear cover 4, and the Removable fit via screws. A square control window 1a is provided on the surface of the upper cover 1; a wiring window 2a and a main vent 2b are provided on the front cover 2, and the two are spaced up and down; the left cover 3 and the right cover 6 are symmetrically distributed, and are respectively provided with The rear cover 4 is provided with a rectangular inner groove 15, and the bottom of the inner groove 15 is provided with two lateral air outlets 16 side by side, and the air outlet 16 has fan installation holes 17 distributed in the circumferential direction.

With reference to Fig. 2, Fig. 3 and Fig. 4, an upper partition 7 and a lower partition 8 are distributed inside the housing, and the inner space of the housing is divided into an upper chamber a, a middle chamber b and a lower chamber c; the upper chamber Room a is provided with a first wiring terminal installation position 10 and a circuit board installation position 7a, the first connection terminal installation position 10 is close to the wiring window 2a, and the upper partition 7 is between the first connection terminal installation position 10 and the circuit board installation position 7a A square wiring gap 11 is arranged between them; a sub-baffle 9 with an area smaller than the circuit board installation position 7a is also provided above the circuit board installation position 7a, for fixing some smaller auxiliary circuit boards.

The middle chamber b is provided with a second connection terminal installation position 13, which is connected to the first connection terminal through a bent copper sheet. The cooling plate installation position 14, the cooling plate installation position 14 is just below the second wiring terminal installation position 13, the lower partition 8 is provided with a capacitor fixing hole 12a at the capacitor installation position 12 (as shown in Figure 5), and the capacitor installation position 12 is close to the main vent 2b of the front cover 2; the lower partition 8 between the cooling plate installation position 14 and the air outlet 16 is inclined upward, forming a section of diversion whose diameter becomes larger from the end of the cooling plate to the end of the air outlet 16 Section 18.

1 and 6, the upper cover 1 is provided with a lower flange 1b around it, and the lower flange 1b wraps the top side walls of the front cover 2, the rear cover 4, the left cover 3 and the right cover 6 respectively. The lower flange 1b avoids exposure of the top of the other side of the relatively sharp cover plate, reduces the probability of injury to maintenance personnel, and makes use and handling safer.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (8)

1. a kind of frequency converter shell, including the upper lid (1) of detachable cooperation, lower cover (5), protecgulum (2), bonnet (4), left cover (3), Right cover (6) and the dividing plate of inside；Upper lid (1) surface is provided with control window (1a), and protecgulum (2) upper end is provided with wiring window (2a), Protecgulum (2) lower end is provided with main ventilation mouth (2b), and left cover (3) and right cover (6) are symmetrical, and bonnet (4) is provided with air outlet (16), its Feature is:

Described dividing plate has two pieces, respectively upper spacer (7) and lower clapboard (8), and upper spacer (7) and lower clapboard (8) are arranged successively And dividing housing 135 into three chambers, described three chambers are from top to bottom followed successively by upper chamber (a), middle chamber (b) and lower chambers (c)；

Upper chamber (a) is the first binding post installation position (10) near wiring window (2a) place, upper chamber (a) opposite terminals The installation position other end is wiring board installation position (7a)；

Middle chamber (b) is provided with the second binding post installation position (13), and the first binding post and the second binding post pass through to be arranged on Wiring breach (11) connection on upper spacer (7)；

Lower chambers (c) are provided with heat sink installation position (14), heat sink installation position below the second binding post installation position (13) (14) it is electric capacity installation position (12) and main ventilation mouth (2b) between；Described air outlet (16) is highly more than heat sink installation position (14) Highly, second partition has diversion division (18) obliquely, and diversion division (18) is located at heat sink installation position (14) and air outlet (16) between.

2. frequency converter shell according to claim 1, is characterized in that: described left cover (3) and right cover (6) are provided with secondary vent (3a), secondary vent (3a) connects the electric capacity installation position (12) of lower chambers (c).

3. frequency converter shell according to claim 2, is characterized in that: described second partition sets at electric capacity installation position (12) place There are some electric capacity fixing holes (12a).

4. frequency converter shell according to claim 3, is characterized in that: described wiring breach (11) is located at the first binding post And wiring board installation position (7a) between.

5. frequency converter shell according to claim 4, is characterized in that: described bonnet (4) is provided with inner groovy (15), described go out Air port (16) is arranged on inner groovy (15) bottom land, and air outlet (16) is circumferentially with fan mounting holes (17).

6. frequency converter shell according to claim 5, is characterized in that: described air outlet (16) is transversely arranged two.

7. frequency converter shell according to claim 6, is characterized in that: described upper spacer (7) assist side installation position (7a) Place is provided with sub-dividing plate (9), and sub-dividing plate (9) is higher than that upper spacer (7) upper surface and its frontal projected area fall assist side installation position (7a) in.

8. frequency converter shell according to claim 7, is characterized in that: described upper lid (1) is formed around lower flange (1b), under Flange (1b) wraps protecgulum (2), the top sidewall of bonnet (4), left cover (3) and right cover (6) respectively.