JP-2026075838-A - Compressed air generator

Abstract

[Problem] To provide a compressed air generator that prevents a drop in the temperature of compressed air and the generation of condensate due to contact with outside air, while also contributing to improved workability for oil removal equipment. [Solution] A compressed air generating device comprising a compressed air pressure circuit, the compressed air pressure circuit comprising, in order from at least the front stage, an oil-lubricated compressor, an oil tank, an air dryer, various equipment, an oil removal device, and air piping connecting the various equipment and the various equipment to the oil removal device, the various equipment being cased in a single housing, the oil removal device being located outside the housing in the immediate vicinity of the air dryer and being detachable by a union. [Selection Diagram] Figure 1

Inventors

• 福原 廣

Assignees

• 株式会社フクハラ

Dates

Publication Date

20260511

Application Date

20241023

Claims (6)

1. A compressed air generating device comprising a compressed air pressure circuit, The compressed air circuit comprises, in order from the front, an oil-lubricated compressor, an oil tank, an air dryer, various other components, an oil removal device, and air piping connecting the various components and the various components to the oil removal device. The various devices are housed within a single enclosure. The oil removal device is located on the outside of the housing, in close proximity to the air dryer, and is characterized by being detachable by a union.
2. The compressed air generating apparatus according to claim 1, characterized in that the various devices, oil removal device, and air piping are arranged in a substantially straight line in plan view.
3. The compressed air generating apparatus according to claim 1, characterized in that the oil removal device is equipped with an oil mist detector, and the oil mist detector is detachable by a union.
4. The compressed air generating apparatus according to claim 1, characterized in that the oil removal device does not come into contact with the outer wall of the housing.
5. The compressed air generating apparatus according to claim 1, characterized in that a portion of the air piping connected to the oil removal device is in contact with the outer wall of the housing.
6. The compressed air generating apparatus according to any one of claims 1 to 5, characterized in that the air dryer is equipped with a sensor-type or timer-type drain trap, and the oil removal device is equipped with a sensor-type or float-type drain trap.

Description

This invention relates to a compressed air generating apparatus in which various components constituting a compressed air pressure circuit—a compressor, an oil tank, and an air dryer—are housed within a single enclosure, and an oil removal device is provided immediately adjacent to the enclosure. Compressed air generated by a compressor is used in a variety of applications, such as spray painting and automatic train door/window systems. Depending on the application of this compressed air, various devices such as air dryers, cyclone separators, and oil removal devices may be installed in the air pressure circuit between the compressor and the discharged compressed air. However, with conventional compressed air circuit configurations, when the air piping connecting various devices is extended according to the arrangement of the devices, the contact area with the outside air increases, leading to a decrease in the temperature and saturated water vapor content of the compressed air passing through, and a tendency for condensate to form in the air piping. In addition, when the compressed air circuit is housed in an enclosure, tasks such as checking the deterioration status of the oil removal device and replacing the device become complicated. Therefore, there was a need for technology that could prevent the temperature of compressed air from dropping due to the extension of air piping, and also simplify the work on the oil removal device. Therefore, the applicant has developed a technology in which an air dryer and an oil-water separator are integrated, and the condensate generated by drying the compressed air produced by the compressor in the air dryer is purified and discharged by passing it through the oil-water separator. This technology is proposed in Patent Document 1. Furthermore, the applicant has developed a technology in which a cyclone separator and an oil adsorption device are installed to separate and remove moisture and oil mist from the compressed air produced by the compressor, and the clean compressed air is supplied to the downstream stage. This technology is proposed in Patent Document 2. However, while the proposal in Patent Document 1 is useful for improving the efficiency of drain treatment by shortening the drain piping from the air dryer to the oil-water separator, the oil-water separator is also installed in the same box or on the same base as the air dryer, and therefore does not solve the above problem. Furthermore, while the proposal in Patent Document 2 is useful for separating and removing moisture and foreign matter using a cyclone separator, the compressed air being supplied remains at a high temperature. The temperature of the compressed air decreases due to the temperature difference with the inside of the oil adsorption device, which can cause condensate to form inside the device. Therefore, the above problem is still not solved. The applicant, focusing on the phenomenon of condensation occurring due to the extension of air piping in conventional compressed air circuits, conceived the idea of arranging the various components constituting the compressed air circuit in close proximity. This led to the development of a compressed air generator that, by arranging the compressor, oil tank, and air dryer within a single enclosure, shortening the air piping, and simultaneously arranging an oil removal device in close proximity to the enclosure, prevents temperature drop and condensation generation of the compressed air due to contact between the air piping and the outside air, while also simplifying the operation of the oil removal device. This resulted in the proposal of the "compressed air generator" described in the present invention. Patent No. 3368429Patent No. 6713596 This is an explanatory diagram showing an embodiment of the compressed air generating device according to the present invention. The most distinctive feature of the compressed air generating device 1 according to the present invention is that the various components constituting the compressed air pressure circuit—a compressor 2, an oil tank 21, and an air dryer 3—are housed in a housing 10, and an oil removal device 4 is provided immediately adjacent to the housing 10. Hereinafter, embodiments of the compressed air generating device 1 according to the present invention will be described with reference to the drawings. Furthermore, the compressed air generating device 1 according to the present invention is not limited to the embodiments described below, and can be appropriately modified within the scope of the technical idea of the present invention, that is, within the range of shapes, dimensions, materials, etc. that can exhibit the same effects and functions. Figure 1 is an explanatory diagram showing an embodiment of the compressed air generating device 1 according to the present invention. The compressed air generating apparatus 1 according to the present invention is a device in which a compressor 2, an oil t