Packaged compressed air generator

Abstract

To provide a compressed air generation device that is packaged in a housing, and in which a control board is disposed on a front surface of the housing.SOLUTION: A compressed air generation device comprises at least a compressor, an air tank, and an electromagnetic drain trap in a single housing, and employs means in which a control board of the compressor is disposed at a predetermined location on a front surface of the housing, and a control board of the electromagnetic drain trap is disposed at a predetermined location on the front surface of the housing.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a compressed air generating device, and more particularly to a compressed air generating device in which a compressor, an air tank, and an electromagnetic drain trap are casing-mounted within a single housing. [Background technology]

[0002] Compressed air generated by a compressor contains large amounts of atmospheric water vapor, along with foreign matter such as dust and oil mist. Conventionally, devices such as air tanks and air dryers that separate water vapor from compressed air and remove it as drain have been installed in compressed air circuits, and drain traps have been connected to these devices to mechanically discharge the water vapor to the outside. Another approach has been to package various devices in a housing to shorten the length of piping required to send compressed air to downstream stages.

[0003] However, in conventional compressed air circuit configurations, when an electromagnetic drain trap is used for drain discharge, a control panel for manually operating the drain during maintenance, operation checks, etc. is often installed adjacent to the solenoid valve, i.e., the control panel is also located below the device in which the electromagnetic drain trap is installed, which poses the problem that the worker must lower his or her body to perform the work manually.Furthermore, when the work target is a compressed air generating device packaged in a housing, the door of the housing must be opened, the necessary work must be performed at the work location, and then the door must be closed again, which is an extremely cumbersome process. Therefore, there has been a demand for a compressed air generating device that allows workers to easily perform work on devices packaged in a housing, particularly electromagnetic drain traps, without having to significantly change their posture.

[0004] In order to solve the above problem, the applicant developed a technology to reduce the height of the bottom of the drain tank connected to the compressed air pressure circuit to 180 cm or less, and proposed the technology described in Patent Publication No. 2016-53411 (Patent Document 1).

[0005] However, while the technical proposal in Patent Document 1 has the effect of enabling work on a drain trap connected to a compressed air circuit installed at a high altitude to be done while standing up, rather than at a high altitude using a stepladder or the like, it is difficult to adapt this technology to a drain trap packaged in a housing installed on the floor, and the above-mentioned problem has not been solved.

[0006] The applicant focused on the location of the control panel that operates the solenoid valve of the electromagnetic drain trap in the above-mentioned conventional compressed air pressure circuit, and came up with the idea that it might be possible to operate the solenoid valve from outside the housing, just like the control panel of the compressor that is installed as a compressed air generating device.Based on this idea, the applicant developed a compressed air generating device in which the compressor, air tank, and electromagnetic drain trap are each installed within a single housing, and the control panel for the solenoid valve is installed on the front side of the housing, and has come to propose the ``package-type compressed air generating device'' of the present invention. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-53411 Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the above problems, the present invention provides a compressed air generating device packaged in a housing, in which the control panel of the electromagnetic drain trap is mounted on the front surface of the housing. At a height of 1m or more Arranged in , which allows workers to operate it without changing their posture significantly. The object is to provide a compressed air generating device. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides a compressed air generating device that includes at least a compressor, an air tank, and an electromagnetic drain trap in a single housing, in which the compressor operation panel is disposed at a predetermined position on the front of the housing, and the electromagnetic drain trap operation panel is disposed at a predetermined position on the front of the housing. Height of 1m or more The device is provided at a predetermined location.

[0010] The present invention also employs a means in which the operation panels for the compressor and the electromagnetic drain trap are disposed in the same location on the front of the housing.

[0011] Furthermore, the present invention employs a means in which the air tank and the drain tank are connected by a straight drain introduction pipe disposed substantially vertically.

[0012] Furthermore, the present invention employs a means in which the inlet pipe arranged between the drain tank and the electromagnetic drain trap and the outlet pipe arranged from the electromagnetic drain trap toward the outside are arranged approximately horizontally. [Effects of the Invention]

[0013] In the package type compressed air generating device according to the present invention, the control panel of the electromagnetic drain trap is located on the front of the housing. Height of 1m or more By disposing the solenoid valve at a predetermined position, an excellent effect is achieved in that an operator can manually operate the solenoid valve without changing his / her posture significantly.

[0014] Furthermore, according to the package-type compressed air generating device of the present invention, by adopting an arrangement in which the control panels for the compressor and electromagnetic drain trap are arranged in the same location on the front of the housing, it is possible to operate the compressor and electromagnetic drain trap in one place.

[0015] Furthermore, in the packaged compressed air generating device of the present invention, the air tank and the drain tank are connected by a straight drain inlet pipe arranged approximately vertically, so that the drain that has turned into water droplets when water vapor condenses in the air tank can smoothly flow into the drain tank.

[0016] Furthermore, in the package-type compressed air generating device of the present invention, the inlet pipe connecting the drain tank and the solenoid valve and the outlet pipe that can discharge the drain from the solenoid valve to the outside are arranged approximately horizontally, which makes the flow of drain caused by the operation of the solenoid valve smooth and makes it easy to discharge the drain to the outside. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an explanatory diagram showing an embodiment of a package-type compressed air generating device according to the present invention. FIG. [Figure 2] FIG. 10 is an explanatory diagram showing another embodiment of a packaged compressed air generating device according to the present invention. [Figure 3] 1 is an explanatory view showing a main part of an embodiment of a package-type compressed air generating device according to the present invention. [Figure 4] 1 is an explanatory view showing a main part of an embodiment of a package-type compressed air generating device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] The greatest feature of the packaged compressed air generating device 1 of the present invention is that it employs a means for housing the various devices that make up the compressed air pressure circuit, namely a compressor 3, an air tank 4, and an electromagnetic drain trap 10, in a housing 2, and for disposing a compressor operation panel 5 and an electromagnetic drain trap operation panel 6 at predetermined locations on the front of the housing 2. Hereinafter, an embodiment of a package-type compressed air generator 1 according to the present invention will be described with reference to the drawings.

[0019] The packaged compressed air generating device 1 according to the present invention is not limited to the embodiments described below, but can be modified as appropriate within the scope of the technical concept of the present invention, i.e., within the scope of the shape, dimensions, materials, etc. that can achieve the same functional effects.

[0020] Fig. 1 is an explanatory diagram showing an embodiment of a packaged compressed air generator 1 according to the present invention. Fig. 2 is an explanatory diagram showing another embodiment of a packaged compressed air generator 1 according to the present invention, in which a compressor operation panel 5 and an electromagnetic drain trap operation panel 6 are disposed in the same location. Fig. 3 is an explanatory diagram showing the essential parts of an embodiment of a packaged compressed air generator 1 according to the present invention, in more detail, an explanatory diagram showing the connection between an air tank 4 and a drain tank 11. Fig. 4 is an explanatory diagram showing the essential parts of an embodiment of a packaged compressed air generator 1 according to the present invention, in more detail, an explanatory diagram of an electromagnetic drain trap 10. The packaged compressed air generation device 1 according to the present invention is a device in which a compressor 3, an air tank 4, and an electromagnetic drain trap 10 (hereinafter sometimes referred to as "various devices") are housed in a single housing 2, and the compressed air generated by the compressor 3 is sent to the compressed air-utilizing device via air piping 23 after the moisture contained therein is separated as drain in the air tank 4. The drain separated from the air tank 4 flows into and is stored in the drain tank 11, and is then discharged to the outside by the operation of the solenoid valve 12.

[0021] The compressor 3 and the air tank 4, and the air tank 4 and the equipment using compressed air, are connected by air piping 23 made of hollow tubes, which form a flow path for sending compressed air from the compressor 3 to the equipment using compressed air. There is no particular limitation on the diameter of the air pipe 23 connecting them, but it is possible to reduce pressure loss of the compressed air by making the diameter of the air pipe 23 the same as the diameter of the discharge port of the compressor 3. In addition, there is no particular limitation on the length of the air pipe 23, but by shortening the length of the air pipe 23 and reducing the area in contact with the outside air, it is possible to prevent a drop in the temperature of the compressed air sent into the air pipe 23 and to achieve the effect of suppressing the generation of drain in the air pipe 23.

[0022] The casing of the present invention is a structure that covers the various devices that make up a compressed air pressure circuit capable of generating compressed air to be sent to compressed air-using equipment, with a housing 2, and is capable of blocking at least the sides and top from the outside world. There are no particular limitations on the casing method, and possible methods include completely covering the various devices in their entirety with a metal box, or constructing part of the side surface from glass or reinforced plastic, etc., so that some or all of the various devices can be seen from outside the housing 2. 1, the housing 2 is provided with an air pipe 23b that sends compressed air that has passed through various devices to downstream devices that use the compressed air. In addition, although not shown, an air intake port that allows the compressor 3 to take in outside air, a vent port used to control the temperature inside the housing 2, and the like may be provided as needed. There are no particular limitations on the locations where the various devices are installed, and for example, the compressor 3 and the air tank 4 may be installed in a substantially straight line in a plan view. By adopting such an arrangement, it is possible to reduce the number of bends in the air piping 23 that occur when connecting devices, and it is possible to reduce pressure loss and drainage caused by collisions of compressed air at the bends.

[0023] The compressor 3 is a device that compresses air to a predetermined pressure (for example, 0.7 MPa) and generates compressed air. There are various types of compressors 3, such as reciprocating, rotary, and centrifugal types, depending on the structure for generating compressed air. There are no particular limitations on the type of compressor 3 used in the present invention, and any type or structure can be used. In addition, an air pipe 23a is connected to the compressor 3 for sending the generated compressed air to the air tank 4.

[0024] The compressor 3, which is encased in the housing 2, has a compressor control panel 5, which allows the compressor 3 to be operated, disposed in a predetermined location on the front of the housing 2. The compressor control panel 5 allows the compressor 3 to be operated without opening the housing 2. The functions of the compressor control panel 5 are not particularly limited, and various functions may be provided as needed, such as a function to turn the compressor 3 power on and off, a function to start and stop compressed air generation, a function to increase or decrease the amount of compressed air generated, and a function to determine the compression ratio. The installation location of the compressor control panel 5 is also not particularly limited as long as it is in front of the housing 2, but it is preferable to install it in a location that is easily visible to operators, for example, at a height of 1 meter or more.

[0025] The air tank 4 is a container for temporarily storing the compressed air generated by the compressor 3, and is disposed downstream of the compressor 3 via air piping 23a. After storing the incoming compressed air, the air tank 4 delivers the air at a constant pressure via air piping 23b to downstream equipment. The provision of this air tank 4 helps to suppress the water hammer effect of the fluid (compressed air) when the compressor 3 starts or stops, thereby reducing the load on downstream equipment. A socket 24 is provided below the air tank 4, and drain generated in the air tank 4 flows from the socket 24 through a drain inlet pipe 20 into the drain tank 11.

[0026] The drain introduction pipe 20 is a pipe that allows drain generated in the air tank 4 to flow into the electromagnetic drain trap 10. Regarding the length and shape of the drain introduction pipe 20 hand,A preferred embodiment is one in which the drain introduction pipe 20 is a straight pipe extending vertically so as to provide the shortest distance for connection to the drain tank 11 disposed below the air tank 4. There are also no particular restrictions on the diameter of the drain introduction pipe 20, but it is desirable that the diameter be equal to or greater than the diameter of the socket 24. By adopting such an embodiment, drain can flow smoothly into the electromagnetic drain trap 10 and the occurrence of air binding can be suppressed. 3, a preferred embodiment is one in which the drain inlet pipe 20 is provided with a valve 25, a union 26, and a check valve 27. By adopting this embodiment, even if an apparatus abnormality occurs due to malfunction of the electromagnetic drain trap 10, the check valve 27 prevents backflow of drain from the drain tank 11, while the valve 25 stops the inflow of drain, and the union 26 can be removed, making it easy to replace or maintain the drain tank 11. Note that the valve 25 used in this embodiment is preferably a ball valve with a full bore diameter (same diameter) so as not to provide resistance to the inflow of drain.

[0027] The electromagnetic drain trap 10 is a device that discharges the drainage of the air tank 4 to the outside, and is composed of a drain tank 11, an electromagnetic valve 12, and a valve unit 13. The electromagnetic drain trap 10 opens and closes a valve portion 13 by controlling the opening and closing operation of a solenoid valve 12, and mechanically discharges the drain stored in a drain tank 11 to the outside. The detailed structure of the electromagnetic drain trap 10 used in the present invention is not particularly limited and may be any conventionally known technology. The electromagnetic drain trap 10 is basically automatically controlled by a water level sensor. When manually controlling the electromagnetic drain trap 10, such as during maintenance or when checking operation, this is done by operating the electromagnetic drain trap operation panel 6. As shown in Figure 1, the electromagnetic drain trap operation panel 6 is disposed in a predetermined location on the front of the housing 2. The functions of the electromagnetic drain trap operation panel 6 are not particularly limited, and possible functions include, for example, a power ON / OFF function for the electromagnetic drain trap 10, a forced drain discharge / discharge stop function, and a discharge amount increase / decrease function. Regarding the installation location of the electromagnetic drain trap operation panel 6 teeth , in front of the housing 2 That , in a position that is easily visible to workers is Installation at a height of 1m or more Adopt do. 2, it is also preferable to arrange the compressor operation panel 5 and the electromagnetic drain trap operation panel 6 in the same location on the front of the housing 2, forming a single operation panel. By adopting such an embodiment, manual operations by an operator can be performed in one location, for example, to increase the amount of compressed air produced by the compressor 3 while increasing the discharge volume of the electromagnetic drain trap 10, which contributes to improving work efficiency.

[0028] The drain tank 11 is a tank that stores drain that flows in from the air tank 4 via a drain inlet pipe 20. When the solenoid valve 12 is opened, the drain stored in the drain tank 11 is discharged to the outside. The detailed structure of drain tank 11 is not particularly limited as long as it is based on conventionally known technology. For example, as shown in Figure 4, a configuration is conceivable in which a partition wall is provided inside drain tank 11 to form storage chamber 16 and sensor chamber 17. By adopting such a configuration, the drain discharged from air tank 4 is temporarily stored in storage chamber 16, and foreign matter such as dust contained in the drain is separated by settling or floating at the bottom or near the water surface of the drain. After that, only clean drain flows into sensor chamber 17 through drain inlet pipe 18 provided through partition wall 15, and is discharged to the outside by solenoid valve 12.

[0029] A water level sensor connected to an electromagnetic valve 12 is provided on the inner surface of the drain tank 11. The water level sensors provided on the inner surface of the drain tank 11 are used as conditions for controlling the opening and closing of the solenoid valve 12, and at least an upper limit sensor 8 and a lower limit sensor 9 are provided. Any water level sensor using conventionally known technology may be used, and a resistance-type water level sensor is suitable, for example. As shown in Fig. 4, when a sensor chamber 17 is provided, the upper limit sensor 8 is provided above the drain inlet pipe 18, and the lower limit sensor 9 is provided below the drain inlet pipe 18 and above the drain outlet 19. Although not shown, by providing a full water sensor above the upper limit sensor 8 and near the top, and a low water sensor below the lower limit sensor 9 and near the bottom, it is also possible to detect abnormalities in the drain water level in the drain tank 11. It is to be noted that the upper limit sensor 8 and the lower limit sensor 9 may be activated by fluctuations in the water surface, so it is desirable to install them at a location away from the drain inlet and the drain inlet pipe 18.

[0030] The solenoid valve 12 controls the opening and closing operation of the valve portion 13 and performs automatic control based on a detection signal from a water level sensor provided in a sensor chamber 17 . The solenoid valve 12 determines whether the valve unit 13 is open or closed based on the presence or absence of detection signals transmitted from the upper limit sensor 8 and the lower limit sensor 9 provided in the sensor chamber 17, and mechanically controls the opening and closing of the valve unit 13. Specifically, when detection signals are received from both the upper limit sensor 8 and the lower limit sensor 9, the solenoid valve 12 controls the valve unit 13 to open, thereby discharging the condensate to the outside, and when the detection signals from both the upper limit sensor 8 and the lower limit sensor 9 are cut off, the solenoid valve 12 controls the valve unit 13 to close, thereby stopping the discharge of the condensate to the outside and storing the condensate. The specific structure of the solenoid valve 12 may be any known one as long as it is possible to control the valve unit 13 using a water level sensor. The solenoid valve 12 is connected to the solenoid drain trap operation panel 6, and when an operator operates the solenoid drain trap operation panel 6, the mechanical control by the solenoid valve 12 stops. In addition to the discharge operation using a water level sensor, it is also possible to provide a timer or the like in the solenoid valve 12, although this is not shown, to perform a periodic discharge operation.

[0031] The valve unit 13 is a valve controlled by the electromagnetic valve 12, and controls the discharge of drainage from the drain tank 11 by opening and closing the valve. The valve section 13 is disposed midway between the inlet pipe 21, which is a pipe connected to the drain discharge port 19, and the outlet pipe 22, which is a pipe that discharges the drain that has flowed into the inlet pipe 21 to the outside, and the valve is opened and closed under the control of the solenoid valve 12, thereby connecting and disconnecting the inlet pipe 21 and the outlet pipe 22. The structure of the valve section 13 may use conventionally known technology, but in addition to controlling the opening and closing of the valve by the solenoid valve 12 using the water level sensor mentioned above, a structure will be used that allows an operator to manually control the opening and closing of the valve section 13 by operating the electromagnetic drain trap control panel 6, and to directly operate the power supply to the electromagnetic drain trap 10.

[0032] The drain outlet 19 is provided in a lower region of the drain tank 11 and is an outlet for drain stored in the drain tank 11. The inlet pipe 21 connected to the drain outlet 19 is connected to the valve unit 13, thereby controlling the discharge of the drain in the drain tank 11. There is no particular limitation on the location where drain outlet 19 is installed, but if it is installed at the very bottom of drain tank 11, settled foreign matter will also be discharged along with the drain and may enter the moving parts of valve unit 13 and cause malfunctions, so it is preferable to install it in an upper position slightly away from the bottom, as shown in Figure 4. There is also no limitation on the diameter of drain outlet 19, but by making it the same diameter as or larger than inlet piping 21 connected to drain outlet 19, it becomes possible to discharge the drain without applying excessive pressure when it is discharged. In addition, when the aforementioned storage chamber 16 is disposed in the drain tank 11 and the storage chamber 16 and the sensor chamber 17 are formed within the drain tank 11, the drain outlet 19 will naturally be provided in the sensor chamber 17.

[0033] The inlet pipe 21 is a pipe that sends the drain discharged from the drain outlet 19 to the valve unit 13, and is arranged so that both ends are connected to the drain outlet 19 and the valve unit 13, respectively. The outlet pipe 22 is a pipe that discharges the drain sent from the inlet pipe 21 to the outside when the valve unit 13 is opened, and has one end connected to the valve unit 13 and the other end directed to the outside. There are no particular limitations on the diameters of the inlet pipe 21 and the outlet pipe 22, but by making them approximately the same diameter as the open diameter of the valve unit 13, it becomes possible to make constant the pressure applied when the condensate is discharged and reduce the burden on the valve unit 13. Furthermore, by arranging the inlet pipe 21 and the outlet pipe 22 substantially horizontally or with a downward incline toward the outside, it becomes possible to prevent the condensate from accumulating or flowing back inside the pipes when the condensate discharge stops due to the closing of the valve unit 13.

[0034] The main operations and actions of the compressed air generating device 1 comprising the above components will be described with reference to FIG. The packaged compressed air generating device 1 has a compressor 3 and an air tank 4 arranged via air pipes 23a and 23b, and an electromagnetic drain trap 10 arranged at the bottom of the air tank 4, with the entire device encased in a housing 2. First, compressed air generated by compressor 3 is sent through air piping 23a and flows into air tank 4. At this time, the compressed air contains water vapor and dust from the atmosphere. The compressed air that has flowed into air tank 4 is separated into water vapor and foreign matter as drainage due to collisions with the inner wall of air tank 4, adhesion to dust, and cooling by outside air, and is then sent through air piping 23b to downstream equipment that uses compressed air.

[0035] Next, the operation of discharging the drainage separated in the air tank 4 will be described with reference to FIGS. The drain separated from the compressed air in the air tank 4 hangs down the inner wall of the air tank 4 due to gravity, or falls downward from the air tank 4 due to gravity, and flows into the drain inlet pipe 20 via the socket 24. The drain that flows into the drain inlet pipe 20 flows into the storage chamber 16 of the drain tank 11, and is temporarily stored in the storage chamber 16, causing foreign matter such as dust contained in the drain to float or settle. The drain from which the foreign matter has been separated then flows into the sensor chamber 17 via the drain inlet pipe 18, and is either discharged to the outside or stored in the sensor chamber 17 depending on the opening and closing operation of the valve unit 13.

[0036] Next, the opening and closing operation of the valve portion 13 by the solenoid valve 12 and the drainage operation in the sensor chamber 17 will be described with reference to FIG. When valve unit 13 is in a closed state, the drain water level in sensor chamber 17 continues to rise due to the drain flowing in from storage chamber 16 via drain inlet pipe 18, and when the water level in sensor chamber 17 reaches upper limit sensor 8 (water level A), a detection signal is sent from upper limit sensor 8 to solenoid valve 12. Solenoid valve 12 opens valve unit 13 in response to the detection signal from upper limit sensor 8, thereby connecting the flow paths of inlet pipe 21 and outlet pipe 22. Then, the drain that had been stored in sensor chamber 17 is discharged to the outside via drain discharge port 19, inlet pipe 21, valve unit 13, and outlet pipe 22, causing the drain water level in sensor chamber 17 to drop. Furthermore, when valve unit 13 is in an open state, the drain water level in sensor chamber 17 continues to drop as the drain water is discharged. Then, when the drain water level reaches below lower limit sensor 9 (water level B), the detection signal that had been sent from lower limit sensor 9 to solenoid valve 12 is cut off. When the detection signal from lower limit sensor 9 is cut off, solenoid valve 12 closes valve unit 13, stopping the discharge of drain water. When valve unit 13 is closed, the flow path connecting inlet pipe 21 and outlet pipe 22 is cut off, and the drain water level in sensor chamber 17 continues to rise.

[0037] The basic configuration, operation, and function of the packaged compressed air generator 1 according to the present invention have been described above. However, the present invention is not limited to the configuration shown in the above embodiment and the drawings. For example, an intercooler or aftercooler for lowering the temperature of the compressed air may be provided upstream or downstream of the air tank 4, and housed in the housing 2 along with the various other devices. This configuration allows water vapor contained in the compressed air generated by the compressor 3 to be separated and removed outside the air tank 4, enabling cleaner compressed air to be sent to downstream devices that use compressed air. Furthermore, by providing control panels for the intercooler and aftercooler on the front side of the housing 2, the various housed devices can be operated solely from the front side of the housing 2, providing other advantageous effects.

[0038] As described above, the packaged compressed air generating device 1 of the present invention can achieve space saving for the entire device by casing the compressor 3, air tank 4, and electromagnetic drain trap 10 in a single housing 2, and by arranging the compressor control panel 5 and electromagnetic drain trap control panel 6 in front of the housing 2, it contributes to improving work efficiency. [Industrial Applicability]

[0039] The present invention can be used as a space-saving, highly efficient compressed air generator in any field that requires compressed air, such as food processing, electronic component manufacturing, car body painting, etc. Therefore, it is believed that the "package-type compressed air generator" of the present invention has great industrial applicability. [Explanation of symbols]

[0040] 1 Packaged Compressed Air Generator 2. Case 3 Compressor 4. Air tank 5 Compressor control panel 6 Electromagnetic drain trap control panel 8 Upper limit sensor 9 Lower limit sensor 10 Electromagnetic drain trap 11 Drain tank 12 Solenoid valve 13 Valve section 15 Bulkhead 16 Storage chamber 17 Sensor Room 18 Drain inlet pipe 19 Drain outlet 20 Drain inlet pipe 21 Inlet piping 22 Outlet piping 23 Air piping 23a Air piping 23b Air piping 24 sockets 25 valves 26 Union 27 Check valve

Claims

1. A compressed air generating device comprising at least a compressor, an air tank, and an electromagnetic drain trap in a single housing, The compressor control panel is disposed at a predetermined location on the front of the housing, and the electromagnetic drain trap control panel is disposed at a predetermined location on the front of the housing at a height of 1 m or more, The air tank and the drain tank of the electromagnetic drain trap are connected by a straight drain introduction pipe arranged approximately vertically, The drain inlet pipe is equipped with a valve, union and check valve. A package-type compressed air generator characterized in that an inlet pipe arranged between a drain tank and an electromagnetic drain trap, and an outlet pipe arranged from the electromagnetic drain trap toward the outside, are arranged approximately horizontally.

2. 2. The package-type compressed air generating device according to claim 1, wherein the compressor and the electromagnetic drain trap operation panels are disposed in the same location on the front of the housing.

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