JPH0444213Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a heat exhaust device for an engine room of a speed sprayer, and more specifically, an engine room for a speed sprayer that can efficiently exhaust heat in the engine room. The present invention relates to a heat exhaust device.

[Conventional technology]

Inside the engine room of the speed sprayer,
In addition to the high-temperature engine, it houses a reduction gear, a power sprayer, a water pump, etc. In a speed sprayer, a chemical tank that stores chemical liquid may be installed between the engine room and the blower in the front and back direction of the speed sprayer. In such a case, the engine room is With the engine room cover,
The rear side is sealed off by the front wall of the drug tank. Further, the engine cooling fan 34 is disposed on the front side of the engine, and is configured to flow air sucked in from the radiator 32 to the rear side of the engine. In order to exhaust the air flowed by the cooling fan 34 to the outside of the engine room, the engine room cover is formed with ventilation holes, but the chemical liquid sprayed around the speed sprayer flows into the engine room. In order to prevent this, ventilation holes cannot be formed on the top surface of the engine room cover, but are instead formed on the sides of the engine room cover, making it difficult to make large ventilation holes from the standpoint of strength and design. .

[Problem that the invention aims to solve] Therefore, in the conventional speed sprayer,
The structure is such that the air flowed to the sides and rear of the engine room by the cooling fan is difficult to escape to the outside of the engine room, and as a result, high-temperature air tends to stay in the engine room, adversely affecting the reduction gear etc. Furthermore, high-temperature air in the engine room flows around to the front of the radiator, reducing the cooling effect of the radiator.

The purpose of this invention is to provide a heat exhaust device for an engine room for a speed sprayer that can improve the heat exhaust effect in the engine room.

[Means to solve the problem]

This invention has an engine room 28, a chemical tank 2,
2. The jet head 24 and the blower 26 are arranged in order,
In a speed sprayer in which a drive shaft 40 that drives the blower 26 passes through the chemical tank 22, a tubular member 4 that communicates between the engine room 28 and an end surface of the chemical tank 22 on the jet head 24 side.
4 passes through the drug tank 22, and the drive shaft 4
0 is driven by the engine 30 via a clutch 36 so as to be connectable and disconnectable, and is provided with a partition plate 46 that passes through the inside of the tubular member 44 and partitions the jet head 24 side end of the tubular member 44 from the jet head 24. is,
The present invention proposes a heat exhaust device for an engine room for a speed sprayer, characterized in that a heat exhaust fan 52 for sending air in the engine room 28 into the tubular member 44 is integrally attached to the drive shaft 40. It is.

[Effect]

Since the heat exhaust fan is integrally attached to the drive shaft that drives the blower, it is in a driving state when the blower is operating, and is in a stopped state when the blower is stopped. Further, the load on the engine increases while the blower is operating, and a large amount of heat is generated. Therefore, the heat exhaust fan is driven in accordance with the operating period of the blower when the heat generated in the engine room increases, and sends high-temperature air in the engine room into the tubular member. This high-temperature air moves to the jet head side of the chemical tank via the tubular member, and is discharged around the speed sprayer from between the end surface of the chemical tank on the blower side and the partition plate.

[Example] This invention will be described below with reference to an example shown in the drawings.

FIG. 2 is a side view of the speed sprayer 10, and FIG. 3 is a schematic cross-sectional view of the speed sprayer 10 at the location of the chemical tank 22. The speed sprayer 10 is equipped with a truck 16 that is supported by front wheels 12 and rear wheels 14 so as to be self-propelled.The truck 16 includes, in order from the front, a driver's seat 18 into which a driver gets into the vehicle, and a seat in the engine room. An engine room cover 20 that covers the sides and top, a chemical tank 22 that stores a chemical solution, a spray head 24 that sprays atomized chemical solution around the surroundings, and a blower 26 that sends air sucked in from the rear to the spray head 24 are arranged or It is installed.

FIG. 1 is a structural diagram of the speed sprayer 10 in the front and back direction. Inside the engine room cover 20, a radiator 32 for cooling the coolant of the engine 30 is disposed on the front side of the engine 30. A cooling fan 34 is disposed between the engine 30 and the radiator 32, and a cooling fan 34 is disposed on the front side of the engine 30. is driven to flow air from the front to the rear of the radiator 32. The power of the engine 30 is taken out from the rear of the engine 30 and the clutch 3
6. Air blower 2 via reducer 38 and drive shaft 40
It is transmitted to the rotor blades 42 of No. 6. The power required to operate the blower 26 accounts for 50 to 60% of the total output of the engine 30, and the engine load when the blower 26 is stopped is less than half of the total load of the engine 30. A tubular member 44 having a cross-sectional area sufficient as a hot air discharge passage passes through the inside of the chemical tank 22 in the front-rear direction of the speed sprayer 10, communicates the rear part of the engine room 28 with the rear end of the chemical tank 22, and is penetrated by the drive shaft 40. has been done. The partition plate 46 is arranged at a position slightly away from the rear end face of the drug tank 22 toward the jet head 24 side, and partitions the rear end face of the medicine tank 22, including the opening on the jet head 24 side of the tubular member 44, from the jet head 24, and creates a heat exhaust gap. 48 is the rear end surface of the drug tank 22 and the partition plate 4
6. The heat exhaust fan 52 is disposed within the tubular member 44 on the blower 26 side, and is connected to the drive shaft 4.
It is integrally fixed at 0. A plurality of spray nozzles 50 are installed on the jet head 24 and eject a sprayed chemical solution.

To describe the operation of the embodiment, the heat exhaust fan 5
2 is integrally attached to the drive shaft 40 that drives the blower 26, so it is in a driving state when the blower 26 is operating, and is in a stopped state when the blower 26 is stopped. The engine 30 also includes a blower 26
During operation, the load increases and a large amount of heat is generated. Therefore, the exhaust heat fan 52 is driven in accordance with the operating period of the blower 26 in which the heat generated in the engine room 28 increases, and the exhaust heat fan 52 is driven to
8 is sent into the tubular member 44. This high-temperature air moves to the jet head 24 side of the chemical tank 22 via the tubular member 44 and is discharged around the speed sprayer 10 from the heat exhaust gap 48 .

[Effect of idea]

As described above, according to this invention, a tubular member having a sufficient cross-sectional area passes through the drug tank through the drive shaft, a heat exhaust fan is disposed inside the tubular member, and a jet head of the tubular member is disposed inside the tubular member. The side end portion is partitioned from the jet head by a partition plate, and the space between the jet head side end of the tubular member and the partition plate serves as an outlet for exhaust heat. In this way, by driving the heat exhaust fan, high-temperature air in the engine room is discharged from the tubular member and the outlet between the jet head side end of the tubular member and the partition plate, thereby efficiently controlling the temperature rise in the engine room. be able to.

Further, in this invention, the heat exhaust fan is integrally attached to the drive shaft that drives the blower, and is driven in accordance with the operation of the blower. The load on the engine due to the operation of the blower accounts for most of the engine's total output, and when the blower is operating, the heat generated in the engine room increases. With this idea, the exhaust heat fan is driven when the blower is operating, where temperature rise in the engine room is a problem, and when the blower is stopped, the exhaust heat fan is also stopped, resulting in the following effects: arise.

(1) When the blower is stopped, the noise of the exhaust heat fan can be avoided, and the drive loss of the exhaust heat fan can be suppressed, reducing engine fuel consumption.

(2) When starting the engine in cold weather and during subsequent warm-up, the heat exhaust fan is in a stopped state, so the high temperature air in the engine room is not exhausted by the heat exhaust fan, and the warm-up time of the engine is shortened. can be shortened.

(3) When the blower is operated in cold weather, hot air passes through the tubular member, which warms the chemical liquid in the chemical tank and improves the mixing state of the chemical liquid.

(4) When the blower is in operation, the spray part, which is the blower's air outlet, is adjacent to the gap behind the chemical tank for exhausting heat, with the partition plate as the border.
The ejector effect of the air blown by the blower promotes heat exhaustion.

(5) By increasing the size of the heat exhaust fan, the amount of discharge from the heat exhaust gap can be increased, and an air curtain can be created to prevent the mist from the jet head from falling on the driver at the front of the speed sprayer.

[Brief explanation of the drawing]

The drawings relate to an embodiment of this invention, and Fig. 1 is a structural view of the speed sprayer in the front and rear direction, Fig. 2 is a side view of the speed sprayer, and Fig. 3 is a schematic cross-sectional view of the speed sprayer at the location of the chemical tank. It is. 10...Speed sprayer, 22...Medical tank, 24...Full head, 26...Blower, 28...
Engine room, 40... Drive shaft, 44... Tubular member, 46... Partition plate, 52... Exhaust heat fan.

Claims (1)

[Scope of claims for utility model registration] (1) Regarding the front and back direction of the speed sprayer 10, the engine room 28, the chemical tank 22, and the jet head 2
4 and a blower 26 are arranged in this order, and a drive shaft 40 for driving the blower 26 passes through the chemical tank 22. Communicating tubular member 4
4 passes through the drug tank 22, and the drive shaft 40 is driven by the engine 30 via a clutch 36 so as to be connectable and disconnectable, and the tubular member 4
4 and the jet head 2 of the tubular member 44.
A partition plate 46 is provided to partition the four side ends and the jet head 24, and a heat exhaust fan 52 for sending air from the engine room 28 into the tubular member 44 is integrally attached to the drive shaft 40. A heat exhaust device for the engine room of a speed sprayer featuring the following. (2) The heat exhaust device for an engine room for a speed sprayer according to claim 1, wherein the heat exhaust fan 52 is disposed within the tubular member 44.