CN101776007B - Heat dissipation structure of box type diesel generator set - Google Patents

Abstract

The invention relates to a block construction of a diesel generator set, in particular to a heat dissipation structure of a box type diesel generator set. The structure comprises a box body, an inner chamber of which is internally provided with a power generator, a diesel engine and an air inlet duct; the front end of the power generator is provided with an air blower coaxial with the power generator; the air blower is provided with two coaxial impellers which are respectively in a front working chamber and a rear working chamber; the air inlet duct arranged on the front working chamber is arranged at the front end of the air blower and is communicated with the inner chamber of box body; the air inlet duct arranged on the rear working chamber is arranged at the rear end of the air blower and is communicated with the front end of the inner chamber of a power generator shell; the two working chambers share a fan outlet located at the top of the air blower and an air exhausting duct communicated with an air exhausting port at the top of the box body is arranged above the fan outlet. The invention features reasonable heat dissipation path, good heat dissipation effect, simplified inner structure and wiring of the equipment, improved operation reliability and reduced costs.

Description

Heat dissipation structure of box type diesel generator set

technical field

The invention relates to a component structure of a diesel generator set, in particular to a heat dissipation structure of a box-type diesel generator set.

Background technique

Silent air-cooled diesel generator sets are generally installed in a box-shaped structure. It is not only necessary to do sound insulation, noise reduction, and vibration reduction, but also to ensure that the unit has good ventilation and heat dissipation in the box, and can be reliable in the required high temperature environment. Due to the turbulent air flow of the heat source in the unit, generally a number of cooling fans driven by 220V motors are installed in the silent box. Considering the installation of cooling fans, it is necessary to select a suitable location, air path direction, and line laying and control. At the same time High requirements are also placed on the high temperature performance of the fan motor, which brings complexity to the design of the silent box, increases the failure rate of the unit, reduces the overall reliability of the unit, and increases the manufacturing cost.

Contents of the invention

The technical problem to be solved by the present invention is to provide a heat dissipation structure of a box-type diesel generating set with simple structure, low cost, high operation reliability and good heat dissipation effect.

The heat dissipation structure of the box-type diesel generator set of the present invention includes a box body, a generator is placed at the front of the box cavity, a diesel engine is placed at the rear of the box cavity, and an inlet connecting the inside and outside of the box cavity is placed at the rear end of the box cavity. Air duct; the front end of the generator is provided with a fan coaxial with the generator; the fan has two coaxial impellers, the two impellers are located in the front and rear working chambers respectively, and the working chamber in the front The air inlet of the fan is located at the front end of the fan and communicates with the inner cavity of the box. The air inlet of the working chamber at the rear is located at the rear end of the fan and communicates with the front end of the inner cavity of the generator housing. The two working chambers share a fan outlet located at the top of the fan. An exhaust duct communicating with the air exhaust opening on the top of the box body is arranged above the air outlet of the fan.

There are two outlets of the air inlet channel leading to the inner cavity of the box, and these two outlets are respectively located on both sides of the rear end of the inner cavity of the box.

The invention utilizes the generator rotating shaft to drive the two-way fan as the heat dissipation power, and the heat dissipation air flows in two ways from the outside of the equipment in the box body and the inner part of the generator housing, and can simultaneously heat the inside and outside of the equipment, with reasonable heat dissipation routes and good heat dissipation effects; at the same time Compared with the traditional heat dissipation structure, it reduces the number of heat dissipation fans, simplifies the internal structure and wiring of the equipment, improves the reliability of operation, and reduces the cost.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of the fan of the present invention.

Detailed ways

As shown in the figure, the heat dissipation structure of the box-type diesel generator set includes a box body 1, a generator 2 is placed at the front of the box cavity, a diesel engine 3 is placed at the rear of the box cavity, and a box body is placed at the rear end of the box cavity. Connect the air inlet duct 4 inside and outside the box; the front end of the generator is provided with a fan 5 coaxial with the generator; the fan has two coaxial impellers 51, and the two impellers are located in the front and rear working chambers respectively. The air inlet 52 of the working chamber at the front is located at the front end of the fan and communicates with the inner cavity of the box body 1. The air inlet 53 of the working chamber at the rear is located at the rear end of the fan and communicates with the front end of the inner cavity of the generator 2. The two working chambers A fan air outlet 54 located at the top of the fan is shared, and an exhaust duct 6 communicating with the air outlet on the top of the box is arranged above the fan outlet. There are two outlets 41 leading to the inner cavity of the box from the air inlet duct 4, and these two outlets are respectively located on both sides of the rear end of the inner cavity of the box.

During the working process of the present invention, the air outside the box enters the inner cavity of the box from both sides through the air inlet channel 4, and the air flow passes through the outside of the engine 3 and is divided into two paths: one air flow enters the power generation through the cooling hole on the generator 2 shell In the machine housing, heat is dissipated inside the generator, and then enter the working chamber at the rear of the fan 5 from the air inlet 53 of the working chamber at the rear, and then be discharged upwards by the impeller at the rear of the fan; another airflow passes through the outside of the generator, After dissipating heat from the external cavity, it enters the working cavity at the front of the fan from the air inlet 52 of the working cavity at the front, and is discharged upwards by the impeller at the front of the fan.

Claims (2)

1. A heat dissipation structure of a box-type diesel generator set, including a box body (1), a generator (2) is placed at the front of the box cavity, and a diesel engine (3) is placed at the rear of the box cavity. The rear end of the cavity is provided with an air inlet duct (4) connecting the inside and outside of the box; the front end of the generator is provided with a fan (5) coaxial with the generator; its feature is that the fan has two coaxial impellers (51 ), the two impellers are respectively located in the front and rear working chambers, the air inlet (52) of the working chamber at the front is located at the front end of the fan and communicates with the inner cavity of the box (1), and the inlet of the working chamber at the rear The air outlet (53) is located at the rear end of the fan and communicates with the front end of the inner cavity of the generator (2). The exhaust duct (6) that the mouth communicates with. 2. The heat dissipation structure of the box-type diesel generator set according to claim 1, characterized in that: there are two outlets (41) leading to the inner cavity of the box of the air inlet channel (4), and these two outlets are respectively located in the box Both sides of the rear end of the cavity.

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