JPH11199188A - Ventilation device for cooling electrical equipment in industrial vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation device effective for enhancing a cooling effect for electrical equipment in a type of an industrial vehicle in which the electrical equipment is housed in a place between the upper surface of a tank and the lower surface of a cabin. SOLUTION: In an industrial vehicle in which a battery 15 and a capacitor 16 for an air conditioner. are housed in a space 13 formed between the upper surface of a tab 7 provided for the lower part at the side surface of a car body 1 and the overhang lower surface of a cabin mounted to the upper part of the car body. the almost all part at the side of the housing space 13 is covered with a side cover 18 having a suction inlet 18a for a cooling air intake. Besides, an auxiliary cover 19 is provided for the forward side of the housing space 13, which is swelled out far from the side surface of the side cover 18, and it is so designed that the provision of an exhaust outlet 19b for the upper surface and side surface of the auxiliary cover 19 thereby prevents exhaust air from being sucked in the suction inlet 18a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery and cooling (air conditioning) mounted on an industrial vehicle such as a forklift.
The present invention relates to an electric component cooling ventilation device for cooling electric components such as a condenser.

[0002]

2. Description of the Related Art Generally, in a forklift, electric components such as a battery and a condenser for cooling (air conditioning) are mounted on a side surface of a vehicle body. 8 to 10 show a case of a large forklift, and as shown in FIG.
An electric device is provided between an upper surface of a fuel or hydraulic oil tank 32 provided at a lower portion of a side surface of the vehicle body 31 and a projecting lower surface of a cabin (operating cab) 33 mounted at an upper portion of the vehicle body so that the side portion projects above the tank. A storage space 34 for storing items is set, and electrical components such as a battery 35 and a condenser 36 are stored in the storage space 34 and covered with a detachable side cover 37. And the storage space 34
Side cover 3 to cool the inside by natural ventilation
7, a cooling air intake port 38 is provided, and the condenser 36 which generates particularly high heat is intensively cooled by the outside air introduced from the intake port 38. On the other hand, the hot air that has passed through the condenser 36 is
After hitting the rear side frame 39, it flows forward or rearward along the frame, and further hits the front and rear fenders 40, 41 to change direction and is discharged outside through the front and rear exhaust ports 42 provided on the side cover 37. It has a configuration.

[0003]

However, in the conventional ventilation device as described above, as shown in FIG. 9, for example, when a condenser 36 is disposed on the front side and a battery 35 is disposed on the rear side, the ventilation unit is close to the intake port 38. There is a problem that the air (hot air) discharged from the front exhaust port 42 is sucked again from the intake port 38 immediately after the discharge, and the cooling efficiency of the condenser 36 is reduced. That is, the storage space 34
Under the restriction that the intake port 38 and the exhaust port 42 must be arranged close to each other due to the space relationship described above, a problem such as re-intake of exhaust air occurs.

As means for solving such a problem of re-intake of exhaust gas, for example, the front exhaust port 42 is abolished and exhaust is performed using only the rear exhaust port 42 remote from the intake port 38, or It is conceivable to provide a partition between the intake port 38 and the exhaust port 42. However, in the former case, the air exhausted from the rear exhaust port 42 may contact the battery 35 in the middle of the flow to cause an adverse effect or reduce the exhaust gas flow. In such a case, another problem such as a high possibility of impairing the getting on and off the cabin 33 occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to improve the cooling performance of an electric component in an industrial vehicle in which the electric component is stored in a side portion of a vehicle body. An object of the present invention is to provide an effective ventilation device.

[0006]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. That is, the invention of claim 1 is a ventilation device for cooling electrical components in an industrial vehicle having a configuration in which a storage space whose side is opened is provided on a side surface of a vehicle body and electrical components are stored in the storage space. In order to cover the side surface of the storage space, a side cover and a box-shaped auxiliary cover that bulges laterally from the side cover are provided, and the side cover has an intake port or an exhaust port for taking in outside air. Either one is provided, and the auxiliary cover is provided with the other of the intake port and the exhaust port in a portion other than the portion adjacent to the intake port or the exhaust port of the side cover.

According to the first aspect of the present invention, the portion of the box-shaped auxiliary cover that protrudes toward the side of the vehicle body other than the portion adjacent to the intake port or the exhaust port provided on the side cover. For example, by providing the exhaust port or the intake port on the upper surface or the side surface, the exhaust air from the exhaust port is exhausted away from the intake port, and is not sucked into the intake port immediately after the exhaust. That is, the re-inhalation of the exhaust air can be prevented, and the cooling efficiency of the electrical components can be increased.

According to a second aspect of the present invention, in the ventilation device for cooling electrical components in an industrial vehicle according to the first aspect, the storage space includes an upper surface of a tank provided at a lower portion of a side surface of the vehicle body and a side portion at an upper portion of the vehicle body. And a lower surface of a cabin mounted so as to protrude above the tank. When such a configuration is adopted, it can be easily applied to an existing large forklift.

According to a third aspect of the present invention, in the ventilation device for cooling electrical components in an industrial vehicle according to the first or second aspect, the side cover is detachably provided, and the auxiliary cover is fixed. I do. If such a configuration is employed, maintenance work for electrical components can be easily performed by attaching and detaching only the side cover.

According to a fourth aspect of the present invention, in the ventilation device for cooling electrical components in an industrial vehicle according to the second or third aspect, the auxiliary cover is provided on a rear surface of the front fender and at a lower side portion of the cabin. And When such a configuration is adopted, the upper surface of the auxiliary cover can be used as a step for getting on and off the cabin.

[0011]

Embodiments of the present invention will be specifically described below with reference to the drawings. First, a first embodiment will be described with reference to FIGS. FIGS. 1 to 3 are drawings for explaining a storage structure of electrical components in a side portion of a vehicle body of a large forklift and a ventilation device for cooling the electrical components, particularly a cooling (air conditioning) condenser. FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a perspective view. FIG. 4 is a sectional view taken along line BB of FIG. 2, and FIG. 5 is an explanatory view showing a mounting structure of the side cover.

As shown in FIG. 1, a forklift body 1 is provided with two front wheels 2 and two rear wheels 3 on the left and right sides, and a cargo handling device (not shown) is provided on the front side of the body 1. A cabin 4 is mounted on the upper side of the vehicle body 1, an engine hood 5 is mounted on the center, and a counterweight 6 is mounted on the rear side.

In the above-described forklift, a box-shaped tank 7 long in the front-rear direction for storing hydraulic oil or fuel is provided at the lower part of the left and right sides of the vehicle body 1. The tank 7 is fixed (welded) to a side frame 8 constituting a strength member of the vehicle body 1 as shown in FIG.
Is fixed, and a rear fender 10 is fixed to a rear portion. Further, a first step 11 extending integrally from the front fender 9 is provided on a front lower outer surface of the tank 7.

The left and right portions of the cabin 4 and the left and right portions of the deck board 12 disposed on the upper surface of the vehicle body behind the cabin 4 are respectively overhanged above the tank 7, whereby the upper surface of the tank is Inside (rear side), side frame 8, front and rear fenders 9,
A storage space 13 for storing electrical components is formed which is surrounded by the projecting portion of the cabin 4, the cabin 4 and the deck board 12, and the upper surface of the tank outside the storage space 13 constitutes a second step 14.

In the storage space 13, electric components such as a battery 15 and a condenser 16 for cooling (air conditioning) are arranged, and the condenser 16 is fixed to a bracket 17 provided on the upper surface of the tank 7 with bolts. . Further, a side cover 18 and an auxiliary cover 19 for covering the side surface of the storage space 13 are arranged on the side of the storage space 13,
The battery 15 and the condenser 16 are covered.

The side cover 18 is formed in the shape of a rectangular flat plate having a size that covers most of the storage space 13.
An air inlet 18a for taking in the outside air for cooling, which is provided with a protection net, is formed at a portion facing the protection net, and an exhaust port for heat radiation, which is provided with the protection net, is provided at a portion facing the battery 15. 18b are formed.

On the other hand, the auxiliary cover 19 has an upper surface, a rear surface, and a wall on one side surface, and the other surface is formed in a box shape of a substantially right triangle in an open side view. The tank 7 is disposed at the front of the upper surface of the tank 7 and at the upper portion of the rear of the front fender 9 so as to be substantially flush with the side surface of the tank 7, and is fixed by welding or bolts. That is, the box-shaped auxiliary cover 19 is arranged so as to protrude toward the vehicle body side than the side cover 18, and a portion excluding a rear surface adjacent to the intake port 18 a of the side cover 18, that is, In the embodiment, exhaust ports 19a and 19b are formed on the top and side surfaces, respectively, on which a protective net is stretched.
In addition, the auxiliary cover 19 arranged as described above is located at the lower side of the cabin 4, so that the upper surface thereof can be used as a third step for getting on and off the cabin 4.

A substantially U-shaped catch 20 made of an elastic material such as spring steel is provided at both front and rear ends of the side cover 18 as shown in FIG.
Is elastically detachable with respect to a rear surface of the auxiliary cover 19 and a pin 21 provided on the rear fender 10. As a result, the side cover 18 is easily detachable.

This embodiment is configured as described above. Therefore, as shown in FIG. 2, the outside air is sucked from the intake port 18a of the side cover 18 and the condenser 1
Cool 6 The cooled air that has passed through the condenser 16 collides with the side frame 8 behind the condenser 16, changes direction, and flows in the front-back direction. The air flowing rearward is exhausted from the exhaust port 18b of the side cover 18, and the air flowing forward is exhausted from the exhaust ports 19a and 19b on the upper and side surfaces of the auxiliary cover 19.

In this case, the exhaust port 18 of the side cover 18
b is originally located at a position distant from the intake port 18a, while the exhaust port 19b on the side of the auxiliary cover 19 is connected to the intake port 18a.
a, and the exhaust port 19a on the upper surface is exhausted in a direction away from the intake direction.
Neither of the air discharged from a and 19b is sucked into the intake port 18a immediately after the discharge.

For this reason, the condenser 16 is cooled by cold outside air, so that the cooling efficiency is improved and stable performance can be exhibited. in this case,
In the auxiliary cover 19, for example, an appropriate number of rectifying plates for controlling the flow direction of air may be provided so that the direction of discharge of air discharged from the exhaust port 19b on the side surface is directed upward, downward, or forward. It is. Further, since the upper surface of the auxiliary cover 19 can be used as a third step when getting on and off the cabin 4, it is possible to enhance the getting on and off properties.

Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, in addition to disposing an auxiliary cover 19 similar to that of the first embodiment on the front side of the storage space 13, a similar auxiliary cover 22 is also provided on the rear side of the storage space 13. It is installed so as to bulge outward. The rear auxiliary cover 22 has a wall on the upper surface, the rear surface, and one side surface, and is formed in a box shape with the other surface opened, and the side surface of the tank 7 is substantially flush with the side surface of the tank 7. Rear part and rear fender 10
And fixed by welding or bolts. The auxiliary cover 22 has a suction port 18a.
Exhaust ports 22a and 22b with a protective net are formed on the upper surface and side surfaces other than the portion adjacent to the above, so that air after passing through the condenser 16 is discharged.

According to the second embodiment configured as described above, the exhaust port 22 of the rear auxiliary cover 22 is provided.
The a and 22 can be made farther from the intake port 18a of the side cover 18, and the upper surface thereof can be used as a step when getting on and off the upper surface of the vehicle body, for example, during engine service work.

FIG. 7 shows a third embodiment of the present invention. In this embodiment, the side cover 18 is used.
Part is bulged to the side of the car body to make it approximately 3 in plan view.
A rectangular box-shaped auxiliary cover portion 23 is integrally provided, and an intake port 24 is set on the inclined side surface on the rear side of the auxiliary cover portion 23, while an exhaust port 25 is provided on the front side of the cover body with respect to the auxiliary cover portion 23. Is set. Therefore, in this case, the exhaust air is discharged in a direction away from the intake port 24 and is not sucked into the intake port 24.

It should be noted that the present invention is not limited to the illustrated embodiment, and can be appropriately changed without departing from the spirit of the present invention. For example, in the first and second embodiments, the auxiliary covers 19 and 22 may be configured to be detachable, and in that case, the auxiliary covers 19 and 22 may be formed integrally with the side cover 18. . The side cover 12 has an exhaust port, and the auxiliary covers 19, 2
2 may be provided with an air inlet. Further, in the third embodiment, the auxiliary cover portion 23 may be formed separately from the side cover 18 and may be configured to be detachable. The storage space 13 for the condenser 16 is formed by the upper surface of the tank 7, the projecting lower surface of the cabin 4, and the saddle frame 8. In short, the storage space 13 for the condenser 16 is formed on the side surface of the vehicle body 1. As long as the vehicle is located in the vehicle, and may be applied to vehicles other than forklifts. Further, the box shapes of the auxiliary covers 19, 22, and 23 may be shapes other than those illustrated, and a plurality of exhaust ports or intake ports formed in the auxiliary covers 19, 22, and 23 are not required.

[0026]

As described in detail above, according to the present invention,
In an industrial vehicle of a type having a storage space for electrical components on a side surface of a vehicle body, it is possible to prevent air exhausted from an exhaust port from being re-inhaled into an intake port, thereby improving cooling efficiency of the electrical components.

[Brief description of the drawings]

FIG. 1 is a side view of a forklift provided with a ventilation device for cooling electrical components according to a first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a ventilation device for cooling electrical components.

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is an explanatory diagram showing a mounting structure of a side cover.

FIG. 6 is a perspective view showing a ventilation device for cooling electrical components according to a second embodiment.

FIG. 7 is a perspective view showing a ventilation device for cooling electrical components according to a third embodiment.

FIG. 8 is a side view of a forklift provided with a conventional ventilation device for cooling electrical components.

FIG. 9 is a sectional view taken along the line CC of FIG. 8;

FIG. 10 is a sectional view taken along line DD of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Body 4 ... Cabin 7 ... Tank 8 ... Side frame 9 ... Front fender 10 ... Rear fender 13 ... Storage space 16 ... Condenser 18 ... Side cover 18a ... Intake port 19 ... Auxiliary cover 19a, 19b ... Exhaust port

Claims (4)

[Claims] 1. A ventilation device for cooling electrical components in an industrial vehicle having a storage space with a laterally open side in a side portion of a vehicle body and storing an electrical component in the storage space, wherein a side surface of the storage space is provided. In order to cover the side cover, a side cover and a box-shaped auxiliary cover that protrudes sideward from the side cover are provided, and the side cover has one of an intake port and an exhaust port for taking in outside air. The ventilation device for cooling electrical components in an industrial vehicle, wherein the auxiliary cover is provided with either the intake port or the exhaust port at a portion other than the portion adjacent to the intake port or the exhaust port of the side cover. 2. The storage space is formed by an upper surface of a tank provided at a lower portion of a side surface of the vehicle body and a projecting lower surface of a cabin mounted on an upper portion of the vehicle body so that the side surface portion extends above the tank. The ventilation device for cooling electrical components in an industrial vehicle according to claim 1, wherein: 3. The ventilation device for cooling electrical components in an industrial vehicle according to claim 1, wherein the side cover is detachably provided, and the auxiliary cover is fixed. 4. The ventilation device for cooling electrical components in an industrial vehicle according to claim 2, wherein the auxiliary cover is provided on a rear surface of the front fender and on a lower side portion of the cabin.