JP4279091B2 - Air compressor for vehicle - Google Patents

Description

  The present invention relates to a vehicle air compressor.

Conventional vehicle air compressors are equipped with one large-capacity air compressor under the floor of the vehicle, and air filters, oil separators, oil filters, oil coolers, which are peripheral devices constituting the air compressor together with the air compressor In addition, a dehumidifying device including an aftercooler and a dehumidifier is attached to the air compressor, and the whole is covered with a box-shaped cover. (For example, refer to Patent Document 1).
Further, depending on the air compressor, there are cases where a dehumidifying device including an aftercooler and a dehumidifier is separated and divided into two parts, an air compressor and a dehumidifying device, and mounted under the floor of the vehicle.

Japanese Patent No. 3223406 (paragraphs 0010-0011, FIG. 2)

  Conventional vehicle air compressors are configured as described above, and a large-capacity single air compressor has a large volume of the compressor unit and the motor unit that drives the compressor. Therefore, it is not easy to deal with dimensional constraints for vehicles because the entire air compressor cannot be configured with a size less than the height of the air compressor. In addition, air compressors are usually mounted under the vehicle floor via anti-vibration rubber, so that if there is a problem and the air compressor needs to be replaced, air compression including peripheral equipment is required. There is a problem that it is necessary to suspend the entire apparatus, which requires a great deal of work time and labor.

  In addition, in the method in which the air compressor and the dehumidifying device are separated and mounted under the floor of the vehicle, each device occupies a certain amount of arrangement space, and a piping space for connecting them is also necessary. There was a problem that a very large arrangement space was required.

  The present invention has been made to cope with the above-described problems, and can reduce the volume of a single air compressor and increase the degree of freedom of arrangement of peripheral devices so that the entire apparatus can be configured compactly. In addition, an object of the present invention is to provide a vehicle air compressor that can be easily adapted to the equipment space and can improve maintainability.

An air compressor for a vehicle according to the present invention is provided in common to an air compressor in which a plurality of compressors sharing a discharge air capacity for one unit are connected in parallel and an air suction portion of each of the air compressors. An air filter, an oil separator that is provided in common to each of the air compressors and separates the lubricating oil, an oil cooler that cools the separated lubricating oil and returns it to the air compressor, and discharge air from the oil separator A dehumidifying device to be dehumidified is attached to a single storage unit, and the storage unit is attached to the under floor of the vehicle. The storage unit is a main service surface on one side surface of the vehicle by a partition structure. An oil separator section that is open to the left and a remaining space, and an oil separator that is vertically installed on the anti-main service surface side of the oil separator section, and the main service surface An oil filter provided in the vicinity for purifying oil separated by the oil separator, and a cover attached to the main service surface of the oil separator portion and having an inspection window for the oil filter are provided in the remaining space. Is provided with a plurality of pairs of U-shaped guide devices extending in a direction orthogonal to the traveling direction of the vehicle and provided at a predetermined interval, and each support portion of the plurality of air compressors Is mounted so as to be slidable along each pair of guide devices.

An air compressor for a vehicle according to the present invention includes an air compressor in which a plurality of units are connected in parallel, an air filter provided in common to an air suction portion of each air compressor, and a common to each air compressor. An oil separator that separates the lubricating oil, an oil cooler that cools the separated lubricating oil and returns it to the air compressor, and a dehumidifying device that dehumidifies the air discharged from the oil separator in a single storage unit. It is installed and the storage part is attached under the floor of the vehicle. Since the discharge air capacity for one unit is shared by a plurality of air compressors, the capacity of one air compressor is reduced, The degree of freedom of arrangement of devices, parts, etc. constituting the air compression device is increased, and it is easy to adapt the vehicle to the outfitting space.
In addition, since the mounting structure of each air compressor to the storage part can be slid in a direction perpendicular to the traveling direction of the vehicle, the air compressor can be attached and detached while the storage part is attached to the vehicle. In addition, workability such as air compressor replacement and overhaul can be remarkably improved.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the vehicle air compressor according to the first embodiment.
As shown in this figure, a vehicle air compressor 10 includes an air compressor device 1 in which a plurality of air compressors 1A, 1B, and 1C are connected in parallel as main components, and the air of each of the above air compressors. The air filter 2 provided in common to the suction portion (not shown), the oil separator 3 provided in common to each of the air compressors described above, and the lubricating oil separated by the oil separator 3 are purified. Oil filter 4, the oil cooler 5 that cools the lubricating oil purified by the oil filter 4 and returns it to the air compressors 1 A, 1 B, and 1 C, and the temperature of the discharge air from the oil separator 3 is the outside air temperature + 10 ° C. An aftercooler 6 that cools to the extent, and a dehumidifier 7 that constitutes a dehumidifying device together with the aftercooler 6 and dehumidifies air cooled by the aftercooler 6 are provided. The air compressor shares the discharge air capacity for one unit with a plurality of air compressors, and FIG. 1 shows a case of sharing with three units.

FIG. 2 shows a box that constitutes a storage section for storing and fixing each of the above-described devices and the devices described below that are provided in association with them, and shows a two-stage structure. (A) is a plan view, (b) is a side view, and (c) is a front cover of the oil separator. FIG. 3 is a perspective view showing a state in which one air compressor is pulled out of the box from the box.
The box 20 forms an oil separator 22 which is a vertically long chamber by a partition structure 21 at the left end in the figure, and the remaining space on the right side in the figure is partitioned into two upper and lower stages by a partition structure 23, and an upper stage 24. And the lower portion 25 is configured.
Reference numeral 26 denotes attachment portions provided before and after the upper end portion of the box body 20 for attaching the box body 20 under the floor of the vehicle using an appropriate member such as a bolt. It is attached so that it may become the advancing direction.

Three air compressors 1 </ b> A, 1 </ b> B, and 1 </ b> C are attached to the upper structure 24 on the partition structure 23 in a horizontal state. For example, as shown in FIG. 3, the air compressor 1 </ b> A has a mounting structure in which guide devices 31 and 32 having a U-shaped cross section and extending in a direction orthogonal to the traveling direction of the vehicle are fixed to the partition structure 23 at appropriate intervals. In addition, a pair of slide members 33 and 34 that are similarly formed in a U-shaped cross section and are slidable in the guide device are provided, and air is passed through the vibration isolation member 35 to the slide members 33 and 34. The compressor 1A is supported and fixed. When the air compressor 1A is slid from the state of FIG. 3 toward the inside of the upper stage portion 24 while being fixed to the slide members 33 and 34, and is housed in the upper stage portion 24, the slide members 33 and 34 are illustrated. It fixes to the partition structure 23 with the screw etc. which do not.
The other air compressors 1B and 1C are also attached with the same structure.

  The lower stage 25 is provided with an air filter 2, a dehumidifier 7, an oil cooler 5, and an aftercooler 6. Reference numerals 5A and 6A denote fans for cooling the oil cooler 5 and the aftercooler 6, respectively. Of the side surfaces of the box 20, one side surface of the vehicle, that is, the side surface positioned below in FIG. 2A is a main service surface, and the air filter 2 is provided in the vicinity of the main service surface. Further, the oil separator 3 is attached to the oil separator portion 22 in a vertically long state as shown in the figure, and an oil supply port 40, an oil discharge port 41, and an oil discharge valve 42 are provided. Furthermore, an oil filter 4 for purifying oil separated by the oil separator 3, an oil mist filter 43 for collecting mist-like oil that could not be collected by the oil separator 3, and an oil level gauge 44 are provided. Furthermore, a drain filter 45 that captures drain water when the air is cooled by the aftercooler 6 is provided. Further, the oil separator portion 22 is provided with a front cover 50 (a part of which is shown in FIG. 2) as shown in FIG. 3 on the main service surface, and an oil mist filter inspection window is provided on the front cover 50. 51, an oil filter inspection window 52, a drain filter inspection window 53, and an oil level gauge inspection window 54 are provided.

The first embodiment is configured as described above, and since the discharge air capacity for one unit is shared by a plurality of air compressors, the capacity of one air compressor is reduced, and the air compression of mass-produced models The machine can be used.
Moreover, the freedom degree of arrangement | positioning of the apparatus containing an air compressor in the box 20 becomes large, and the adaptation to the mounting space of a vehicle becomes easy.
Furthermore, since it has a two-stage structure, the size of the box 20 in the planar direction can be reduced, and the overall structure can be made compact. In the illustrated example, three air compressors 1A, 1B, and 1C are arranged in the upper stage 24, and the air filter 2, the after cooler 6, the dehumidifier 7, the oil cooler 5 and the like are arranged in the lower stage 25. However, the present invention is not limited to such an arrangement, and it goes without saying that the arrangement equipment for the upper and lower stages may be appropriately changed.

  In addition, since the degree of freedom of arrangement of devices and parts is high, filter elements (air filter 2, oil filter 4, oil mist filter 43, drain filter 45) with high maintenance frequency are gathered in the vicinity of the main service surface, thereby providing a filter element. Workability such as replacement can be improved. In addition, the front cover 50 is provided with an oil mist filter inspection window 51, an oil filter inspection window 52, and a drain filter inspection window 53, so that each filter is provided with an indicator that can be checked for clogging due to a color change or the like. As a result, it is possible to check the color change from each inspection window without opening the front cover 50. As a result, the maintainability can be further improved. Furthermore, since the oil level gauge 44 and the oil supply port 40 are arranged on the main service surface side and the oil level gauge inspection window 54 is provided on the front cover 50, the oil level can be adjusted from the outside without opening the front cover 50. It can be inspected and the workability during refueling can be improved.

Further, since the oil discharge valve 42 and the oil discharge port 41 are arranged on the main service surface side, workability at the time of replacing the lubricating oil can be improved.
Furthermore, since the mounting structure of the air compressors 1A, 1B, and 1C with respect to the box body 20 can be slid in the direction orthogonal to the traveling direction of the vehicle and pulled out from the box body 20, the storage portion is attached to the vehicle. In this state, the air compressor can be attached and detached, and workability such as replacement of the air compressor and overhaul can be remarkably improved.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to the drawings. FIGS. 4A and 4B show a box body in which the devices and parts constituting the vehicle air compressor according to the second embodiment are arranged and stored in a plane. FIG. 4A is a plan view, and FIG. 4B is a side view. (C) is a figure which shows the front cover of an oil separator part, (d) is a figure which shows the front cover of the air filter part mentioned later.
In these drawings, the same parts as those in FIGS. 2 and 3 are denoted by the same reference numerals. That is, in this embodiment, the box body 20 is not a two-stage structure, and the devices, parts, and the like constituting the air compression device are arranged and mounted in a substantially planar manner within the box body 20. The difference from FIG. 2 is that a partition structure 27 is provided to form an air filter portion 28 at the right end portion of the box 20, an air compressor portion 29 is formed at the center portion, and an air filter is formed at the air filter portion 28. 2, the oil filter 4, and the oil cooler 5 are arranged, and in particular, the air filter 2 and the oil filter 4 are provided on the main service surface side.

  Further, a front cover 55 is provided on the main service surface of the air filter portion 28, and an oil filter inspection window 52 for checking a color change of the oil filter 4 is provided on the front cover. In the central air compressor section 29, three air compressors 1A, 1B, and 1C are attached to the main service surface side in the same manner as in the first embodiment, and a dehumidifier 7 is disposed. ing. The oil separator 22 is provided with the oil separator 3, the oil supply port 40, the oil discharge port 41, the oil discharge valve 42, the oil mist filter 43, the oil level gauge 44, and the drain filter 45 in the same manner as in the first embodiment, A cooler 6 is provided. Further, an oil mist filter inspection window 51, a drain filter inspection window 53, and an oil level gauge inspection window 54 are provided on the front cover 50 provided on the main service surface of the oil separator 22 as in the first embodiment. Is provided.

The second embodiment is configured as described above, and since the devices and parts constituting the air compression device are arranged and fixed in a plane in the box 20, the dimension in the height direction can be reduced. Further, it is possible to easily cope with a vehicle having a particularly low equipment installation space under the floor such as a low-floor type vehicle.
In addition, filters, oil level gauges, oil supply ports, oil discharge ports, oil discharge valves, etc. are gathered on the main service surface side, and inspection windows such as filter clogging indicators are installed on the front cover and air compression Since the machine has the same structure as that of the first embodiment in that the machine can be slid to the main service surface side that is orthogonal to the traveling direction of the vehicle, the same effect as described in the first embodiment is obtained. Can be expected.

It is a block diagram which shows the structure of the vehicle air compressor by Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the schematic structure of the box body at the time of the storage part of Embodiment 1 having a two-stage structure, and the arrangement | positioning condition of an apparatus, components, etc., (a) is a top view, (b) is a side view, FIG. 4 is a view showing a front cover of an oil separator portion. It is a perspective view which shows the state which pulled out one air compressor from the box shown in FIG. 2 out of the box. 1 shows a schematic configuration of a box according to Embodiment 2 of the present invention, and shows a case where devices, parts, etc. are arranged and fixed in a plane in a box, (a) is a plan view, and (b) is a side view. (C) is a figure which shows the front cover of an oil-separator part, (d) is a figure which shows the front cover of an air filter part.

Explanation of symbols

1 Air compressor, 2 Air filter, 3 Oil separator,
4 Oil filter, 5 Oil cooler, 6 After cooler,
7 Dehumidifier, 10 Air compressor for vehicle.

Claims (6)

An air compressor in which a plurality of compressors that share the discharge air capacity for one unit are connected in parallel, an air filter that is provided in common in the air suction portion of each air compressor, and common to each air compressor An oil separator that separates the lubricating oil, an oil cooler that cools the separated lubricating oil and returns it to the air compressor, and a dehumidifying device that dehumidifies the air discharged from the oil separator. The storage part is attached to the under floor of the vehicle. The storage part includes an oil separator part that opens to a main service surface on one side surface of the vehicle by a partition structure, and a remaining space. The oil separator is vertically mounted on the anti-main service surface side of the oil separator, and the oil separator provided near the main service surface. An oil filter for purifying the separated oil I, is attached to the main service surface of the oil separator unit, the cover is provided with a sight glass of the oil filter, the traveling direction of the vehicle to the rest of the space A plurality of pairs of U-shaped guide devices extending in a direction orthogonal to the predetermined distance and provided at a predetermined interval are provided, and the support portions of the plurality of air compressors are provided as the guides of the pairs. An air compressor for a vehicle, which is mounted so as to be slidable along the device. The remaining space of the storage unit has an upper and lower two-stage structure, the plurality of pairs of guide devices are provided in the upper storage unit, the plurality of air compressors are mounted, and the air filter and the dehumidifying device are mounted in the lower storage unit. The vehicular air compressor according to claim 1. The remaining space of the storage unit has a structure having one mounting plane, the plurality of pairs of guide devices are provided on a part of the mounting plane, the plurality of air compressors are mounted, and the other mounting plane The vehicle air compressor according to claim 1, wherein an air filter, an oil separator, an oil cooler, and a dehumidifying device are respectively attached to the portion. The vehicle air compressor according to any one of claims 1 to 3 , wherein the oil filter or the air filter is provided with an indicator whose color changes in accordance with a clogging state. An oil supply port for lubricating oil of the air compressor and an oil level gauge for detecting the oil amount are provided in the vicinity of the main service surface of the oil separator, and an inspection window for the oil level gauge is provided in the cover. The vehicle air compressor according to any one of claims 1 to 4 . The oil discharge valve and oil discharge port of the lubricating oil in the air compressor, a vehicle of any one of claims 1 to 5, characterized in that provided in the main service the vicinity of the oil separator unit Air compressor.

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