compressor

Abstract

To provide a compressor that can be remotely monitored and remotely operated.SOLUTION: A compressor 100 according to the present invention comprises: a compressor body 105 in which a compression mechanism 101 for discharging compressed gas, and a power mechanism 102 for driving the compression mechanism 101 are arranged adjacently to a tank 104 for storing the gas compressed by the compression mechanism 101; and a board unit 106. The board unit 106 comprises a fitting plate 107 in contact with the compressor body 105, a board case 108 in contact with the fitting plate 107, and a control board 109 arranged in the board case 108. The fitting plate 107 comprises a connection part 110, a waterproof / dustproof part 111, and a board fitting part 112. The connection part 110 is in contact with the compressor body 105. The board case 108 is fitted to the board fitting part 112 on the side of the compressor body 105.SELECTED DRAWING: Figure 1B

Description

Technical Field

[0001] The present invention relates to a compressor.

Background Art

[0002] Conventionally, air compressors have been widely used for the purpose of supplying compressed fluid to consumers, both inside and outside buildings, such as in factories and construction sites. Air compressors are not only used to convey air through pipes, but also as a prime mover for tools and brakes operated by air pressure. When an air compressor is used as a prime mover for a tool, the start and stop of the tool can often be operated by a valve in the tool itself. [[ID= sixteen]]

[0003] On the other hand, the stop of air supply and the control of air pressure need to be operated by a switch on the compressor body. Therefore, when an operator checks the state of the air compressor or changes the air pressure, it is necessary to move from the place where the tool is used to the place where the air compressor is located for operation. In order to improve work efficiency and simple convenience, a function to monitor and operate the air compressor remotely is desired.

[0004] When mounting the monitoring / operation function on a compressor that is operated only by an induction machine and an electromagnetic switch, it is necessary to consider services such as component replacement as in Patent Document 1, and the case for housing control equipment and the like should be easily detachable.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Patent Document 1 describes a mounting structure that facilitates the attachment and detachment of a case (3) for housing control equipment, but it does not take into consideration attachment to older models. Because compressors have a long lifespan between purchase and replacement, it is necessary to be able to retrofit older models with a function to remotely monitor and operate the air compressor. Furthermore, since the control equipment housed within the case includes electronic circuits and other components, vibration, heat, water, and dust are potential causes of failure. Therefore, the case needs to be highly airtight and designed to minimize the transmission of vibration and heat.

[0007] This invention was conceived in view of the above circumstances, and aims to provide a compressor that can be remotely monitored and remotely operated. [Means for solving the problem]

[0008] To solve the aforementioned problems, the compressor of the present invention comprises a compressor body and a circuit board unit, the compressor body being positioned adjacent to a tank for storing the compressed gas, the compressor body being positioned adjacent to a tank for storing the compressed gas, the circuit board unit being positioned adjacent to a mounting plate in contact with the compressor body, a circuit board case in contact with the mounting plate, and a control board being positioned inside the circuit board case, the mounting plate being positioned Extending vertically Connection part and Extends horizontally Waterproof and dustproof section Extending vertically It has a circuit board mounting portion, and the connection portion is in contact with the compressor body. and fixed The circuit board case is attached to the compressor body side of the circuit board mounting portion. The circuit board case is positioned between the compressor body and the circuit board mounting portion, and when viewed from the side opposite the compressor body, the circuit board case is covered by the circuit board mounting portion, and when viewed from above the compressor body, the circuit board case is covered by the waterproof and dustproof portion. It is characterized by having this feature. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a compressor that can be remotely monitored and remotely operated. [Brief explanation of the drawing]

[0010] [Figure 1A] Front view of a compressor according to Embodiment 1 of the present invention. [Figure 1B]Left side view of the compressor according to Embodiment 1 of the present invention. [Figure 2A] Front view of another example of the compressor according to Embodiment 1. [Figure 2B] Left side view of another example of the compressor according to Embodiment 1. [Figure 3A] Front view of the compressor according to the modified example of Embodiment 1. [Figure 3B] Right side view of the compressor according to the modified example of Embodiment 1 of the present invention. [Figure 4A] Front view of an example of the mounting structure of the board unit of the compressor according to Embodiment 2. [Figure 4B] Left side view of an example of the mounting structure of the board unit of the compressor according to Embodiment 2. [Figure 5] Exploded perspective view of the board unit to be mounted on the compressor according to Embodiment 2. [Figure 6] Schematic front view of the board mounting portion and the control board of Modified Example 1. [Figure 7] Schematic front view of the board mounting portion and the control board of Modified Example 2. [Figure 8] Schematic front view of the board mounting portion and the control board of Modified Example 3. [Figure 9] Schematic front view of the board mounting portion and the control board of Modified Example 4. [Figure 10] Schematic front view of the board mounting portion and the control board of Modified Example 5. [Figure 11] Schematic front view of the board mounting portion and the control board of Modified Example 6. [Figure 12A] Front view of the mounting structure of the board unit of the compressor according to Embodiment 3. [Figure 12B] Left side view of an example of the mounting structure of the board unit of the compressor according to Embodiment 3. [Figure 13] Exploded perspective view of the opening / closing device and the board unit of Embodiment 3. [Figure 14A] Front view of the mounting structure of the board unit of the compressor according to the modified example of Embodiment 3 of the present invention. [Figure 14B] Left side view of an example of the mounting structure of the board unit of the compressor according to the modified example of Embodiment 3. [Figure 14C]A right side view of an example of a mounting structure for a compressor substrate unit according to a modified embodiment of Embodiment 3. [Modes for carrying out the invention]

[0011] Hereinafter, embodiments of the compressor of the present invention will be described in detail with reference to the drawings as appropriate. Specifically, an embodiment of the substrate unit mounting structure for the compressor of the present invention will be described. <<Embodiment 1>>

[0012] Figure 1A shows a front view of the compressor 100 according to Embodiment 1 of the present invention, and Figure 1B shows a left side view of the compressor 100 according to Embodiment 1 of the present invention. The overall configuration of the compressor 100 of Embodiment 1 will now be described. The compressor 100 comprises a compression mechanism 101 and an electric motor 102 that drives it. The compression mechanism 101 has the function of compressing fluids such as gases.

[0013] Furthermore, the compressor 100 includes a tank 104 for storing the gas compressed by the compression mechanism 101, and a compressor body 105 positioned adjacent to the tank 104. The compressor body 105 is a structural component of the compressor 100.

[0014] The compressor 100 includes, as part of its control system, a switching mechanism 103 that opens and closes the power supply path to the electric motor 102 of the power machine, and a circuit board unit 106 (see Figure 1B). The circuit board unit 106 is a component for remotely or nearbyly monitoring and operating the compressor 100.

[0015] As shown in Figure 1B, the substrate unit 106 includes a roughly L-shaped flat mounting plate 107, a box-shaped substrate case 108, and a control board 109 provided inside the substrate case 108. The mounting plate 107 is a component for attaching the circuit board unit 106 to the compressor body 105. The circuit board unit 106 is installed on the compressor 100 by fixing the connection portion 110 of the mounting plate 107 to the compressor body 105. The circuit board case 108 is attached to the mounting plate 107. The control board 109 is located inside the circuit board case 108.

[0016] The mounting plate 107 shown in Figure 1A is configured to have a connecting portion 110, a waterproof and dustproof portion 111, and a substrate mounting portion 112. The connection portion 110 and the substrate mounting portion 112 are formed in a continuous manner by a vertical flat plate. As shown in Figure 1B, the waterproof and dustproof portion 111 is formed horizontally, curved toward the compression mechanism 101 side, relative to the connection portion 110 and the substrate mounting portion 112. The mounting plate 107 may be formed by bending a single plate to create the connection portion 110, the substrate mounting portion 112, and the waterproof and dustproof portion 111, or it may be formed by connecting two or more members. For example, the mounting plate 107 is made of a rust-proofed iron plate. If the mounting plate 107 is made of metal, it can be made from sheet metal and is easy to process. Alternatively, the mounting plate 107 may be made of resin.

[0017] The compression mechanism 101 is rotationally driven by the electric motor 102 to generate compressed air. The reciprocating motion of the compression mechanism 101 during the compression process and the operation of the electric motor 102 generate vibration and heat. Therefore, it is desirable to attach the circuit board unit 106 to the compressor body 105, where vibrations and heat from the compression mechanism 101 and electric motor 102 are less likely to be transmitted. Furthermore, it is preferable to attach the circuit board unit 106 to the electric motor 102 side of the compressor body 105, which is away from the compression mechanism 101, where vibrations are relatively small.

[0018] <Circuit board unit 106> The mounting structure of the circuit board unit 106 will be described below. As shown in Figures 1A and 1B, the mounting plate 107 is fastened with screws n to the mounting plate connection part 110 and the compressor body 105, and is a plate that extends straight upward. In this case, the connection between the compressor body 105 and the mounting plate 107 may be fixed by welding the connection portion 110 of the mounting plate 107 to the compressor body 105, as shown in Figures 2A and 2B. Figure 2A shows a front view of another example of the compressor 100 according to Embodiment 1, and Figure 2B shows a left side view of another example of the compressor 100 according to Embodiment 1 of the present invention.

[0019] A circuit board case 108 is attached to the side surface of the compressor body 105 at the circuit board mounting portion 112 of the mounting plate 107. A control board 109 is attached to the circuit board case 108.

[0020] By attaching a circuit board case 108, on which the control board 109 is mounted, to the surface of the extended mounting plate 107 on the compressor body 105 side of the circuit board mounting portion 112, it is possible to make the mounting surface of the control board 109 one-sided, thereby reducing costs. Furthermore, by providing a waterproof and dustproof section 111 above the circuit board case 108, the control board 109 can be protected from rainwater and dust by the waterproof and dustproof section 111.

[0021] Furthermore, by making either the board case 108 covering the control board 109 or the board mounting portion 112 covering the control board 109 from a material that allows radio waves to pass through, it becomes possible to mount the control board 109 that can perform wireless communication via a wireless communication unit. For example, the board case 108 and the board mounting portion 112 can be formed from a resin that allows radio waves to pass through. Although metal can be used if holes are made in the board case 108 and the board mounting portion 112, aluminum has the property of absorbing radio waves, so a metal other than aluminum should be used. In other words, it is preferable to use a metal or resin other than aluminum for both the board case 108 and the board mounting portion 112. At least, it is preferable to use a metal or resin other than aluminum for the board case 108.

[0022] According to Embodiment 1, the waterproof and dustproof portion 111 of the mounting plate 107 has the effect of improving the rigidity of the plate and also serves two purposes: waterproofing and dustproofing. By making the only part of the mounting plate 107 that comes into contact with the compressor 100 the connection part 110, and keeping the other parts in contact with the compressor 100, the transmission of vibrations and heat from the compressor 100 to the control board 109 can be reduced.

[0023] As shown in Figures 1B and 2B, the compression mechanism 101 and tank 104 are not in contact with the substrate unit 106 on which the control board 109 is installed. This has the advantage that heat from the compression mechanism 101 and tank 104 is not easily transferred to the substrate unit 106. Furthermore, by joining the compressor body 105 and the circuit board unit 106 (mounting plate 107) with screws n as shown in Figure 1A or by welding y as shown in Figure 2A, it is also possible to attach the circuit board unit 106 (see Figures 1B and 2B) to an older model compressor 100.

[0024] <Variation> Figure 3A shows a front view of a modified compressor 100 according to Embodiment 1, and Figure 3B shows a right side view of a modified compressor 100 according to Embodiment 1 of the present invention. The mounting plate 107h of the modified substrate unit 106h has the same configuration as the mounting plate 107 of Embodiment 1. The modified mounting plate 107h is configured to have a connecting portion 110h, a waterproof and dustproof portion 111h, and a substrate mounting portion 112h.

[0025] As shown in Figure 3B, a circuit board case 108h is attached to the side surface of the compressor body 105 at the circuit board mounting portion 112h of the mounting plate 107h. A control board 109h is attached to the circuit board case 108h.

[0026] The mounting plate 107h is fixed above the opening / closing mechanism 103 of the compressor body 105 by screwing, welding, or the like at the connection portion 110h. In the modified configuration, the circuit board unit 106 is attached to the motor 102 side of the compressor body 105, away from the compression mechanism 101, which has relatively little vibration, thus reducing the effects of vibration. Furthermore, since the circuit board unit 106h is mounted on top of the compressor 100, it is easy for the user to visually inspect the circuit board unit 106h. This improves the workability when operating the compressor 100.

[0027] <<Embodiment 2>> Figure 4A shows a front view of an example of the mounting structure of the circuit board unit 106A of the compressor 100A in Embodiment 2. Figure 4B shows a left side view of an example of the mounting structure of the circuit board unit 106A of the compressor 100A in Embodiment 2.

[0028] The configuration of the substrate unit 106A in Embodiment 2 is the same as that of the substrate unit 106 in Embodiment 1, except as otherwise specified.

[0029] The compressor 100A of Embodiment 2 has substantially the same configuration as the compressor 100 shown in Embodiment 1. Figure 5 shows an exploded perspective view of the circuit board unit 106A to be attached to the compressor 100A of Embodiment 2. The mounting plate 107a of the substrate unit 106A in Embodiment 2 has a waterproof and dustproof portion 111a, a connecting portion 110a, and a substrate mounting portion 112a.

[0030] The connecting portion 110a is connected to one side of the waterproof and dustproof portion 111a, which extends approximately horizontally, and extends upward. The substrate mounting portion 112a is connected to one side of the substantially horizontal waterproof and dustproof portion 111a and to the other side opposite it, and extends downward.

[0031] Then, the connecting portion 110a extending upward from the mounting plate 107 is joined to the compressor body 105, and the circuit board unit 106A is attached to the compressor 100A. With this configuration, the circuit board unit 106A can be made waterproof and dustproof by the circuit board mounting portion 112a, the waterproof and dustproof portion 111a, and the compressor body 105.

[0032] As shown in Figure 5, a control board 109a capable of wireless communication by a wireless communication unit 109b0 is provided on the side surface of the compressor 100A of the substrate mounting section 112a. In this case, the substrate mounting portion 112a is provided with at least one through hole 112a1 and a cover 113 made of a radio wave-transmitting material that covers the through hole 112a1. For example, the cover 113 is made of resin. A control board 109a is mounted in a box-shaped circuit board case 108a. Holes 108k for passing wiring are provided in the bottom plate of the circuit board case 108a. Figure 5 shows three wireless communication units 109b0 as an example, but the number of wireless communication units 109b0 is arbitrary. The number of through holes 112a1 may be increased or decreased depending on the number of wireless communication units 109b0, or, as shown in Figure 5, a large number may be provided to accommodate various control boards 109a.

[0033] The mounting plate 107a is formed of sheet metal using a metal other than aluminum at each of its locations (111a, 110a, 112a), for example. The mounting plate 107a may be composed of multiple components, similar to the first embodiment.

[0034] <Board mounting section 112a and control board 109a> The configuration of the substrate mounting section 112a and the control board 109a will be explained using Figure 5. The control board 109a has a light-emitting section 109i that visually informs the user of the compressor 100A of maintenance timing, operation status, and other information. The cover 113 is provided with a transmissive section 113t that transmits the light from the light-emitting section 109i of the control board 109a. As a result, the user can visually inspect the light-emitting section 109i of the control board 109 through the transmissive section 113t of the cover 113 and understand the status of the compressor 100A.

[0035] Since the light from the light-emitting part 109i2 would be scattered if the lid 113 were made of a transparent material, an opaque or translucent material is used. The light-emitting unit 109i can have, for example, the following functions. Note that there may be one or more light-emitting units 109i.

[0036] Examples of notification by the illumination of the light-emitting unit 109i include the following: • During operation, one of the light-emitting units 109i will light up. If the electromagnetic switch of the switching mechanism 103 (see Figure 4A) opens due to an overcurrent (thermal trip), one of the light-emitting units 109i will light up to indicate an error. When maintenance is required, that is, when the operating time of the compressor 100 exceeds the predetermined N hours for maintenance, one of the light-emitting units 109i will light up. For example, the operating time of the compressor 100 is determined by accumulating the energizing time of the electric motor 102 using the microcomputer on the control board 109, and it is determined whether the operating time has exceeded the predetermined N hours. Then, if the operating time of the compressor 100 exceeds the predetermined N hours, one of the light-emitting units 109i will light up.

[0037] The above are examples of functions; the system may be configured to have at least one of these functions, or it may be configured to have other functions not shown in the examples. Of the multiple through-holes 112o provided in the substrate mounting portion 112a, at least one is allowed to transmit light emitted from the light-emitting portion 109i of the control board 109. The light-emitting portion 109i of the control board 109 may be covered with a tube or the like to prevent light from leaking out of the other through-holes 112o. However, it is preferable to use a light source with directional properties for the light-emitting portion 109i to reduce costs.

[0038] The cover 113 that seals the through hole 112o may be a nameplate, and the portion of the nameplate located directly in line with the light-emitting part 109i of the control board 109 shall be made of a light-transmitting material.

[0039] By constructing the substrate unit 106A of Embodiment 2 from metal, it is possible to reduce initial costs such as resin molding. Furthermore, by using a nameplate for the cover 113 that seals the through hole 112o, it is possible to prevent rainwater and dust from entering the substrate case 108a without compromising the appearance of the product. The following shows a modified example of the through-hole 112o of the substrate mounting portion 112a (viewed from directly in front). The following modified example can be applied to Embodiments 1 and 2 described above, and Embodiment 3 and other modified examples described later.

[0040] Figures 6 to 11 show schematic front views of the substrate mounting sections 112b to 112g and the control boards 109b to 109g for each of the modified examples 1 to 6. Each of the modified examples 1 to 6 in Figures 6 to 11, the control boards 109b to 109g, are equipped with wireless communication units 109b1 to 109g1 that emit radio waves. In each of the control boards 109b to 109g in the modified examples 1 to 6, a board mounting section 112b to 112g is positioned in front of each board, similar to Figure 5.

[0041] <Example 1> In the modified example 1 shown in Figure 6, the substrate mounting portion 112b has a large hole 112b1 formed in one place, through which the wireless communication unit 109b1 of the control board 109b is exposed. Since the wireless communication unit 109b1 of the control board 109b is exposed through the large hole 112b1 of the board mounting portion 112b, the radio waves from the wireless communication unit 109b1 are widely transmitted into the outside space.

[0042] <Modification 2> In the modified example 2 shown in Figure 7, the substrate mounting portion 112c has multiple holes 112c1 formed therein, through which the wireless communication unit 109c1 of the control board 109c is exposed. One of the multiple holes 112c1 faces the position of the wireless communication unit 109c1 of the control board 109c.

[0043] Therefore, the radio waves from the wireless communication unit 109c1 of the control board 109c are smoothly transmitted to the outside space from any of the multiple holes 112c1 of the board mounting portion 112c.

[0044] <Variation 3> In the modified example 3 shown in Figure 8, the substrate mounting portion 112d has multiple holes 112d1 with a curvature that exposes the wireless communication unit 109d1 of the control board 109d. One of the multiple holes 112d1 faces the position of the wireless communication unit 109d1 of the control board 109d. In other words, the wireless communication unit 109d1 of the control board 109d is exposed to the outside space through one of the curvatured holes 112d1 of the substrate mounting portion 112d. Thus, the holes 112d1 of the substrate mounting portion 112d do not have to be rectangular.

[0045] The radio waves from the wireless communication unit 109d1 of the control board 109d are smoothly transmitted to the outside space from one of the holes 112d1 of the board mounting portion 112d, which have multiple curvatures.

[0046] Each of the control boards 109e to 109g in the modified examples 4 to 6 shown in Figures 9 to 11 below is equipped with a light-emitting unit 109i1 to 109i3 that blinks. <Modification 4>

[0047] In the modified example 4 shown in Figure 9, the substrate mounting portion 112e has a large hole 112e1 through which the wireless communication unit 109e1 and the light-emitting unit 109i1 of the control board 109e are exposed. In other words, the wireless communication unit 109e1 and the light-emitting unit 109i1 of the control board 109e are exposed to the outside space through the large hole 112e1 in the substrate mounting portion 112e. Thus, there may be only one light-emitting unit 109i1. The light-emitting unit 109i1 may emit a single color of light, or it may emit multiple colors that change depending on the type of error of the compressor 100, 100A.

[0048] The light-emitting section 109i1 of the control board 109e is visible to the user through the transparent section 113t1 of the cover 113. Radio waves from the wireless communication unit 109e1 are transmitted to the outside space through the hole 112e1 and the cover 113.

[0049] <Modification 5> In the modified example 5 shown in Figure 10, the substrate mounting portion 112f has multiple holes 112f1 formed therein, through which the wireless communication unit 109f1 and multiple light-emitting units 109i2 of the control board 109f are exposed. One of the multiple holes 112f1 faces the position of the wireless communication unit 109f1 of the control board 109c and the position of the multiple light-emitting units 109i2. In other words, the wireless communication unit 109f1 and the multiple light-emitting units 109i2 of the control board 109f are exposed to the outside space through one of the multiple holes 112f1 of the board mounting portion 112f.

[0050] Therefore, the radio waves from the wireless communication unit 109f1 are transmitted smoothly into the outside space, and the user can visually see the multiple light-emitting units 109i2 through the transparent portion 113t2 of the cover 113. Thus, there may be multiple light-emitting sections 109i2. In this case, it is sufficient for only the transmissive section 113t2 of the lid 113 corresponding to the lower hole 112f1 to transmit light. The transmissive section 113t2 of the lid 113 does not need to be rectangular and only needs to transmit light.

[0051] The cover 113 is not transparent and has a translucent portion 113t2 that transmits light from the light-emitting portion 109i2. Alternatively, the cover 113 may not be transparent and may simply be made of a material that transmits light from the light-emitting portion 109i2.

[0052] <Variation 6> In the modified example 6 shown in Figure 11, the substrate mounting portion 112g has multiple holes 112g1 formed in it, through which the wireless communication unit 109g1 and multiple light-emitting units 109i3 of the control board 109g are exposed. One of the multiple holes 112g1 is facing the position of the wireless communication unit 109f1 and the position of the multiple light-emitting units 109i2 of the control board 109c. Then, facing the multiple light-emitting units 109i3 of the control board 109g, multiple transparent portions 113t3 of the cover 113 are arranged.

[0053] Therefore, radio waves from the wireless communication unit 109g1 are smoothly transmitted to the outside space through any of the multiple holes 112g1, and the user can visually observe the multiple light-emitting units 109i3 through any of the multiple holes 112g1 or through the transparent section 113t3. As shown in Figure 11, the transparent section 113t3 can be single or multiple as long as it fulfills its function.

[0054] As described above, by drilling holes in the metal part of the board mounting section 112a, it becomes easier to transmit radio waves from the control board 109a. In addition, by providing a cover 113 on the board mounting section 112a and attaching the board case 108 to the back surface of the board mounting section 112a instead of the front surface, the waterproof and dustproof functions of the control board 109a can be improved.

[0055] <<Embodiment 3>> Figure 12A shows a front view of the mounting structure of the substrate unit 106B of the compressor 100B according to Embodiment 3 of the present invention. Figure 12B shows a left side view of an example of the mounting structure of the substrate unit 106B of the compressor 100B according to Embodiment 3. The substrate unit 106B of Embodiment 3 is configured to have an on / off device 114 attached to it that automatically discharges the water condensed in the tank 104. The water condensed in the tank 104 is discharged through a hose h0 connected to the tank 104 (see Figures 12A and 12B).

[0056] The configuration of the substrate unit 106B in Embodiment 3 is the same as that of the substrate unit 106A in Embodiment 2 (see Figure 5), except as otherwise noted. The compressor 100B of Embodiment 3 has substantially the same configuration as the compressor 100A of Embodiment 2 (Figures 4A and 4B).

[0057] Figure 13 shows an exploded perspective view of the opening / closing device 114 and the circuit board unit 106B of Embodiment 3. Embodiment 3 has a discharge device mounting portion 115 between the waterproof and dustproof portion 111 and the substrate mounting portion 112q of the mounting plate 107.

[0058] <Opening / closing device 114> The opening / closing device 114 is attached to the discharge device mounting section 115. The opening / closing device 114 is a device that removes moisture, etc., that has condensed in the tank 104 (see Figure 12A). Here, the discharge device mounting section 115 should have depth and height dimensions equal to or greater than those of the opening / closing device 114, so that water does not come into contact with the circuit board case 108 even if the piping h1 (see Figure 13) connected to the opening / closing device 114 is disconnected. As described above, the discharge device mounting section 115 is provided between the control board 109 and the opening / closing device 114, resulting in a high level of waterproofing. A hose h0 (see Figure 12A) connected to the tank 104 is connected to piping h1.

[0059] The switching device 114 shown in Figure 13 has a solenoid valve 114a that opens when condensed water in the tank 104 is discharged. The condensed water in the tank 104 is discharged to the outside due to the pressure difference between the inside and outside of the tank 104. The strainer 114b removes solid matter such as rust that is mixed in with the condensed water inside the tank 104. The opening / closing device 114 has a water absorption port 114c1, a water discharge port 114c2, and a strainer discharge port 114c3. A pipe h1 is connected to the water intake port 114c1, to which a hose h0, which is connected to the tank 104, is connected.

[0060] A hose (not shown) for draining condensation from the tank 104 is connected to the water outlet 114c2. Solid matter such as rust removed by the strainer 114b is discharged from the strainer outlet 114c3.

[0061] As shown in Figure 12A, a manually operated shut-off valve 116 is installed at the connection point between the tank 104 and the hose h0. The shut-off valve 116 is used when the shut-off device 114 malfunctions, etc. The valve 116 is opened by turning the handle 116h counterclockwise (as shown by arrow α11 in Figure 12A) and closed by turning it clockwise (as shown by arrow α12 in Figure 12A). To discharge the water condensed in the tank 104 using the above-described opening / closing device 114, the solenoid valve 114a is opened. Then, due to the pressure difference between the inside and outside of the tank 104, the water condensed in the tank 104 is discharged through the hose h0 (arrow α21 in Figure 12A), piping h1, and solenoid valve 114a, and out of the water outlet 114c2 (see Figure 13). Rust contained in the water condensed in the tank 104 is filtered by the strainer 114b and discharged from the strainer outlet 114c3 (see Figure 13).

[0062] Furthermore, if the solenoid valve 114a malfunctions, the user can open the valve 116 by turning the handle 116h of the on-off valve 116 counterclockwise (arrow α11 in Figure 12A), and the water condensed in the tank 104 will be discharged through the hose h0 (see Figures 12A and 12B). Furthermore, in Embodiment 3, in order to improve the visibility of the light-emitting part 109i of the control board 109, the mounting angle or bending angle of the board mounting part 112 plate should be changed to match the installation height of the board unit 106B, rather than being approximately parallel to the connection part 110. The waterproof and dustproof part 111 extending horizontally and the board mounting part 112q form an obtuse angle so that the board mounting part 112q faces upward. According to the above-described embodiment 3, by attaching the opening / closing device 114 to the circuit board unit 106B, it is possible to suppress rust formation on the inner surface of the tank 104 and reduce the effort required to drain the daily condensate.

[0063] Furthermore, by adding a discharge device mounting section 115 (see Figures 12B and 13) to the mounting plate 107, it is possible to improve the rigidity of the mounting plate 107 and reduce vibrations transmitted to the mounting plate 107. Furthermore, as shown in Figure 12B, by changing the mounting angle or bending angle of the circuit board mounting portion 112q, the user of the compressor 110B can visually check the status of the compressor 110B without having to bend down to the height of the circuit board unit 106B. As described above, if the waterproof and dustproof portion 111 and the circuit board mounting portion 112q form an obtuse angle, the user can easily visually check the status of the compressor 110B displayed on the circuit board unit 106B.

[0064] <Example 1> Figure 14A shows a front view of the mounting structure of the substrate unit 106C of the compressor 100C according to a modified example of Embodiment 3 of the present invention. Figure 14B shows a left side view of an example of the mounting structure of the substrate unit 106B of the compressor 100C according to a modified example of Embodiment 3. Figure 14C shows a right side view of an example of the mounting structure of the substrate unit 106C of the compressor 100C according to a modified example of Embodiment 3. The modified substrate unit 106C of Embodiment 3 has a discharge device mounting portion 115 between the waterproof and dustproof portion 111 and the substrate mounting portion 112r on the mounting plate 107c. The mounting angle or bending angle of the substrate mounting portion 112r is in the vertical direction. The waterproof and dustproof portion 111 and the substrate mounting portion 112r are at approximately a right angle.

[0065] <<Other Embodiments>> 1. The present invention is not limited to the embodiments and modified configurations described above, and various modified and specific forms are possible within the scope of the appended claims. [Explanation of symbols]

[0066] 100, 100A, 100B Compressors 101 Compression Mechanism 102 Electric motor (power mechanism) 103 Opening and closing mechanism 104 tanks 105 Compressor Unit 106, 106A, 106B, 106C circuit board unit 107 Mounting plate 108 PCB Case 108k hole 109 Control board 110 Connection part 111 Waterproof and dustproof section 112, 112a, 112b, 112c, 112f, 112g, 112q, 112r PCB mounting section 113 Cover to seal through holes 114 Switching device 115 Discharge device mounting section 116. On / off valve (manual discharge device)

Claims

1. A compressor body and a circuit board unit are provided, comprising a compression mechanism for discharging compressed gas and a power mechanism for driving the compression mechanism, and the compressor body and circuit board unit are arranged adjacent to a tank for storing the gas compressed by the compression mechanism. The aforementioned circuit board unit comprises a mounting plate that contacts the compressor body, a circuit board case that contacts the mounting plate, and a control board disposed within the circuit board case. The mounting plate has a connecting portion extending in the vertical direction, a waterproof and dustproof portion extending in the horizontal direction, and a substrate mounting portion extending in the vertical direction. The connecting portion is in contact with and fixed to the compressor body, the circuit board case is attached to the compressor body side of the circuit board mounting portion, and the circuit board case is positioned between the compressor body and the circuit board mounting portion. A compressor characterized in that, when viewed from the opposite side of the compressor body, the circuit board case is covered by the circuit board mounting portion, and when viewed from above the compressor body, the circuit board case is covered by the waterproof and dustproof portion.

2. The compressor according to claim 1, characterized in that the mounting plate is connected in the order of the connection portion, the substrate mounting portion, and the waterproof and dustproof portion, and the connection portion and the substrate mounting portion are formed in a flat plate shape.

3. The compressor according to claim 1, characterized in that the mounting plate is connected in the order of the connection portion, the waterproof and dustproof portion, and the substrate mounting portion, and each of its surfaces is parallel, perpendicular, and parallel to the mounting surface of the compressor body to which the connection portion is attached.

4. The control board has a wireless communication function, The substrate mounting portion comprises at least one through hole and a cover made of a material that allows radio waves to pass through, The compressor according to claim 1, characterized in that the mounting plate is made of metal.

5. A cover is provided in front of the substrate mounting portion. The control board has a light-emitting section, The substrate mounting portion has a plurality of through holes, The compressor according to claim 1, characterized in that the region of the cover facing the light-emitting portion is made of a material that transmits light from the control board.

6. The mounting plate has a discharge device mounting portion between the waterproof and dustproof portion and the substrate mounting portion. The compressor according to claim 1, characterized in that the discharge device mounting section is equipped with an opening / closing device for drain discharge.

7. The compressor according to claim 1, characterized in that the circuit board case has a hole in the lower part for passing wiring through.

8. The compressor according to claim 1, characterized in that the waterproof and dustproof portion and the substrate mounting portion form an obtuse angle.

9. The mounting plate has a discharge device mounting portion between the waterproof and dustproof portion and the substrate mounting portion. The aforementioned discharge device mounting section is equipped with an opening and closing device for drain discharge, The compressor according to claim 1, characterized in that it has a manual discharge device on the primary side of the switchgear that allows for manual discharge of drain.

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