JPS6018874Y2 - Heat dissipation device for sealed control equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heat dissipation device for a sealed control device such as a sealed inverter device.

Traditionally, inverter devices suck outside air into the device to cool heat-generating elements such as resistance elements, reactors, and semiconductor elements installed inside the device. Otherwise, if outside air is sucked in, the inside of the device will be contaminated and cause a malfunction.
The device itself has a sealed structure, and the air inside the device is forced to circulate through the flow path of the radiator attached to the back of the device.
The outer surface of this radiator is brought into contact with external air for cooling.

Therefore, the purpose of this invention is to standardize heat radiating devices used in sealed control equipment and improve economic efficiency by applying panel cooler type radiators such as those used in transformers. The radiator, which is attached to the side of the sealed control equipment body, consists of upper and lower pipes, and multiple heat radiating panels fixed through the upper and lower pipes in a skewer shape. Rust preventive treatment is applied to the air flow path communicating with the main body of the container, and a rust preventive extraction hole is provided at the periphery of the heat radiator panel to remove excess rust preventive agent remaining inside the heat radiator during this treatment. The circulating medium of the radiator is air rather than oil as in transformers, and there is no risk of rust, and the excess rust preventive agent can be easily removed from the inside of the radiator. This is what I did.

This invention will be explained below with reference to illustrated embodiments.

In the figure, reference numeral 1 denotes a control equipment body such as a sealed inverter device, in which a blower 2 is provided along with heat generating elements such as semiconductor elements, resistance elements, and reactors.

3 and 4 are mounting brackets 5 and 4 on the back side of the control device main body 1, respectively.
The upper and lower heat radiators are attached to upper and lower heat radiators by 5, and each of these radiators is composed of a vibro, 7, and 5 heat radiating panels 8, which are fixed through the upper and lower pipes in a skewered manner. The upper and lower vibrators 7 communicate with each other via five heat dissipation panels 8 arranged in parallel.

Reference numeral 9 indicates a lid that closes the upper and lower vibrators and the opening 10 on the non-installation side of 7, and this difference is removed during the rust prevention treatment described later, and when the rust prevention treatment is completed and the radiator 3.4 is assembled. , which can be attached with screws 11.

Reference numeral 12 denotes rust preventive extraction holes provided at the four corners of the heat dissipation panel 8. These holes need to be closed by pasting a blocking plate with adhesive when the rust preventive agent extraction is completed and the radiators 3 and 4 are assembled. There is.

The installation side openings 13 of the upper and lower vibros 7 communicate with the inside of the control device main body 1, and the installation side openings 13 of the upper vibros of the upper heat radiator 3 are connected to the blower 2. The lower pipe 7 of the device 3 and the upper vibro of the lower radiator 4 are connected within the control device main body 1 by a connecting pipe 14.

Next, a procedure for assembling the heat dissipation device of this invention will be explained.

First, the radiator 3゜4 with M9 removed was subjected to ribbon detreatment by pickling in a pot to improve the coating, and then an undercoat was applied to the radiator 3.
Apply anti-rust treatment to the inner and outer surfaces of 4.

In each of these treatments, all excess rust preventive agent remaining inside the heat radiators 3 and 4 is removed from the extraction holes 12 at the four corners of the heat radiating panel 8.

Usually, the outer surfaces of the heat sinks 3 and 4 are coated with a top coat.

Next, the openings 10 on the side opposite to the installation of the upper and lower vibrators 7 of the radiators 3 and 4 are closed with lids 9, and the extraction holes 12 of the heat radiating panels 8 are closed with closing plates, etc., and then the radiators 3, 4 is mounted and fixed on the back side of the control device main body 1 using a mounting bracket 5.5.

In the heat dissipation device assembled in this way, by operating the blower 2, the air inside the control device 1 is
2 and sent to the upper vibro of the upper radiator 3,
From here, it is distributed to each heat dissipation panel 8 and collected by the lower pipe 7.

Then, it is blown out from the lower pipe 7 into the control device 1 through the connecting pipe 14 and through the lower radiator 4 through a similar route.

On the other hand, external air comes into contact with the outer surfaces of the radiators 3 and 4 and is heated, forming an upward current and rising, and the air inside the radiators 3 and 4 is cooled by this natural convection. .

Normally, as the flow rate of air flowing inside the radiators 3 and 4 increases, rust tends to occur on the inner surfaces of the radiators 3 and 4, but rust prevention treatment is applied as in this invention. If you keep it,
There is no need to worry about rust forming.

In addition, although the above-mentioned embodiment showed rust prevention treatment by bonding treatment and undercoating, the radiators 3 and 4 may be immersed in a hot-dip galvanizing solution to perform rust prevention treatment.

As described above, this idea consists of a radiator that is attached to the side of a sealed control equipment body, consisting of upper and lower pipes, and multiple heat radiating panels that are skewered and fixed through the upper and lower pipes. Furthermore, the air flow passage in this radiator that communicates with the main body is subjected to rust-preventing treatment, and during this treatment, the excess rust-preventive agent remaining inside the radiator is removed by removing the rust-preventing agent by drilling holes in the heat radiating panel. The holes make it easy to remove, so
Standardization of the radiator and efficiency of assembly work can be achieved, which significantly improves economic efficiency.It also has the advantage that rust will not form on the inner surface of the radiator even if the flow rate of air flowing inside the radiator is increased. be.

Further, since a standard panel cooler used in a transformer can be used as a radiator, it has the advantage of being inexpensive and easily available.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of a heat radiator for a sealed type control device according to this invention. Figure 1 is a side view showing the heat radiator for a sealed inverter device, and Figure 2 is a side view of the radiator. , FIG. 3 is a rear view of the radiator with the lid removed. In the figure, 1 is the closed type control equipment body, 2 is the blower 13, 4
is a radiator, 5 is a mounting bracket to the main body, 6 is an upper pipe, 7
8 is a lower pipe, 8 is a heat radiation panel, 9 is a lid, and 12 is a rust preventive extraction hole.

Claims (3)

[Scope of utility model registration request] (1) A closed type control equipment main body having a blower and a control device installed therein, a radiator attached to the side surface of this main body, and having an air flow passage inside the main body communicating with the main body; The radiator consists of upper and lower pipes and a plurality of heat radiating panels fixed through the upper and lower pipes in a skewer shape, and this radiator is subjected to rust prevention treatment and the periphery of the radiator panel is A heat dissipation device for a closed type control device, characterized in that a plurality of rust-proof extraction holes are bored in the part. (2) A heat radiator for a closed type control device according to claim 1, which uses a radiator equipped with a lid that closes openings on the side opposite to the installation of the upper and lower pipes. (3) A heat dissipation device for a closed type control device according to claim 1, which is obtained by subjecting the heat dissipator to rust prevention treatment by soaking it in a rust preventive material.