JP2007064120A - Packaged compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve compression performance and heat resistance by preventing cooling air which cooled a compressor main body, a drive source, a tank and the like from circulating near a suction silencer. <P>SOLUTION: An apparatus storage part 31 storing the compressor main body 4, a motor 22 and the tank 26 and a silencer storage part 32 storing the suction silencer 17 are demarcated by partition plates 27, 29, 30 in a sound insulation box 1. The sound insulation box 1 is provided with a silencer suction port 34 sucking outer air into the silencer storage part 32, an intake port 35 sucking cooling air from an intake duct 36 to the apparatus storage part 31, and discharge ports discharging cooling air in the apparatus storage part 31 to outside. Consequently, the compressor main body 4 can suck low temperature air from the suction silencer 17 and efficiently compresses the same without being influenced by cooling conditions of other apparatuses. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a package type compressor configured to accommodate, for example, a compressor body, a drive source, a tank and the like in a soundproof box.

  In general, as a package type compressor, an air compressor configured to reduce noise during compression operation by housing various devices including a compressor body in a soundproof box is known (for example, a patent) Reference 1).

JP 2004-84648 A

  This type of conventional package type air compressor has a soundproof box made of a closed box. In the soundproof box, for example, a compressor main body that sucks and compresses air from a suction silencer or the like, discharges compressed air, a motor as a drive source that drives the compressor main body, and a tank that stores compressed air. Contained. The soundproof box is provided with an intake port and an exhaust port.

  During operation of the compressor, the fan disposed in the soundproof box is driven to rotate, whereby air is sucked into the soundproof box from the air inlet. The air is discharged from the exhaust port to the outside of the soundproof box after cooling the equipment such as the compressor body, the motor, and the tank. Further, a part of the air sucked into the soundproof box is sucked into the compressor body from the suction silencer and is discharged into the tank as compressed air.

  By the way, in the above-mentioned prior art, as a configuration in which a part of the air is sucked into the compressor body and compressed while cooling the equipment such as the compressor body, the motor, and the tank using the air sucked into the soundproof box. Yes.

  However, the temperature in the soundproof box often rises due to the release of heat from each device or the retention of warm cooling air after cooling these devices. For this reason, in the prior art, even if the cooling air in the soundproof box is efficiently exhausted, warm air is more likely to be sucked into the compressor body than the outside air, and the compression efficiency decreases due to such an increase in the intake air temperature. There is a problem.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to stably supply low-temperature air to the suction portion while cooling devices such as a compressor body, a motor, and a tank. Therefore, it is an object of the present invention to provide a package type compressor capable of improving the compression efficiency.

  In order to solve the above-described problems, the present invention provides a soundproof box composed of a closed box, a compressor body that is provided in the soundproof box, sucks air from a suction portion, compresses the compressed air, and discharges the compressed air. The present invention is applied to a package type compressor provided with a drive source provided in a soundproof box for driving the compressor main body and a tank for storing the compressed air provided in the soundproof box.

  A feature of the configuration adopted by the invention of claim 1 is that, in the soundproof box, the suction chamber is provided separately from a device housing portion for housing a device including the compressor body, a drive source, and a tank, and the device housing portion. A suction portion accommodating portion that accommodates the portion.

  According to a second aspect of the present invention, the suction part is constituted by a suction silencer.

  According to a third aspect of the present invention, the soundproof box is provided with a suction port for sucking outside air into the suction portion accommodating portion.

  According to a fourth aspect of the present invention, the soundproof box is provided with a cooling air guide that is located in the device accommodating portion and guides the cooling air to the compressor body.

  According to invention of Claim 1, a suction part can be accommodated in a suction part accommodating part, and apparatuses, such as a compressor main body, a drive source, and a tank, are accommodated in an apparatus accommodating part outside a suction part accommodating part. Can do. For this reason, during the operation of the compressor, warm air after cooling each device can be blocked from the periphery of the suction portion, and the intake air temperature of the compressor body can be reliably prevented from rising.

  And, for example, external low-temperature air can be stably supplied to the suction portion from, for example, a dedicated suction port provided in the soundproof box, and the low-temperature air can be efficiently compressed, thereby improving the compression performance. be able to. Moreover, since the temperature of the compressed air can be lowered by lowering the intake air temperature, the temperature inside the soundproof box including each device can be suppressed as a whole, and thermal deterioration of each component can be prevented. Can extend the service life.

  In addition, since the compressor body, drive source, tank, and other devices can be cooled in the device housing portion where the suction portion is not arranged, the restriction on the cooling structure considering the intake air temperature of the suction portion and the like can be eliminated. it can. For this reason, the structure suitable for cooling of each apparatus can be implement | achieved easily, and cooling efficiency and heat resistance can be improved.

  Moreover, according to invention of Claim 2, a suction part can be comprised by a suction silencer. The suction silencer can prevent noise from leaking to the outside from the suction side of the compressor body while removing dust and the like contained in the air when sucking air toward the compressor body. .

  According to the invention of claim 3, the suction portion accommodating portion can suck low temperature outside air from the suction port of the soundproof box, and the vicinity of the suction portion without circulating this air around each device. Can lead directly to. Thereby, for example, even when the temperature of the compressor body, the drive source, the tank, or the like rises, low-temperature air can be stably supplied to the suction portion.

  According to the invention of claim 4, the cooling air guide can guide the cooling air flowing in the soundproof box to the periphery of the compressor main body, for example, the compressor main body whose temperature is likely to rise among the devices. It can be cooled efficiently. In addition, for example, a partition member for partitioning between the suction portion accommodating portion and the device accommodating portion can be used as a mounting portion of the cooling air guide, for example, a cooling air guide having a complicated shape, It can be easily installed in the soundproof box by being attached to the partition member or the like.

  Hereinafter, a package type compressor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  Here, FIG. 1 to FIG. 10 show a first embodiment, and in this embodiment, a reciprocating air compressor will be described as an example.

  In the figure, reference numeral 1 denotes a soundproof box constituting the outer shell of a package type compressor. As shown in FIGS. 1 to 6, the soundproof box 1 is formed as a substantially rectangular box surrounded by a plurality of steel plates, for example. The front plate 1A, the rear plate 1B, the left side plate 1C, and the right side plate 1D extending in the upward and downward directions, and the bottom plate 1E and the top plate 1F that close the lower end side and the upper end side thereof.

  Here, as shown in FIGS. 3 and 5, the left side plate 1 </ b> C and the right side plate 1 </ b> D are provided with support portions 1 </ b> G that support a partition plate 27 described later. These support portions 1G extend forward and rearward between the front plate 1A and the rear plate 1B while projecting inward from the left and right side plates 1C and 1D.

  Further, a base 2 is provided on the bottom plate 1E using a plurality of anti-vibration rubbers 2A and the like, and a support base 3 having, for example, a rectangular frame shape or a table shape is provided on the base 2. . A compressor body 4 described later is mounted on the support base 3, and a motor 22, a tank 26, and the like described below are mounted on the pedestal 2 so as to be positioned inside the support base 3. The compressor body 4, the motor 22, and the tank 26 constitute a device housed in a device housing portion 31 described later.

  Reference numeral 4 denotes a compressor main body provided in the soundproof box 1, and the compressor main body 4 is constituted by, for example, a horizontally opposed four-cylinder reciprocating compressor. The compressor body 4 sucks and compresses air from a suction silencer 17 described later, and discharges the compressed air toward the tank 26.

  Here, the structure of the compressor body 4 will be described in detail with reference to FIGS. 9 and 10.

  First, reference numeral 5 denotes a crankcase that forms an outer shell of the compressor body 4, and the crankcase 5 is formed, for example, as a hollow box-like body, and a crank chamber 5A is provided therein. Further, for example, two inflow ports 5B through which air flows into the crank chamber 5A from the suction silencer 17 are provided on the upper surface of the crankcase 5. Further, the side surface of the crankcase 5 is provided with, for example, four outlets 5C (only a part of which is shown) for allowing the air in the crankcase 5 to flow out toward four cylinders 7, 14, 15, 16 described later. It has been.

  A crankshaft 6 is rotatably provided on the crankcase 5, and the crankshaft 6 is rotationally driven by a motor 22. Here, as shown in FIG. 10, an eccentric portion 6 </ b> A that is located in the crankcase 5 and eccentric in the radial direction is provided at an intermediate portion in the axial direction of the crankshaft 6. As shown in FIG. 4, one end side of the crankshaft 6 protrudes from the crankcase 5 toward the rear plate 1B of the soundproof box 1, and a driven pulley 20 described later is provided on the protruding end side.

  Reference numeral 7 denotes, for example, a first cylinder provided on the left side surface of the crankcase 5. The first cylinder 7 includes a cylinder 8 having a base end attached to the crankcase 5, and a valve plate 9 at the distal end side of the cylinder 8. The cylinder head 10 having a suction port 10A and a discharge port 10B is inserted into the cylinder 8 so as to be able to reciprocate, and is rotatably connected to the eccentric portion 6A of the crankshaft 6 by a connecting rod 11A or the like. The piston 11 is generally constituted by a suction valve 12 and a discharge valve 13 provided on the valve plate 9 so as to be openable and closable.

  When the crankshaft 6 is rotationally driven, the suction stroke and the discharge stroke are repeatedly performed as the piston 11 reciprocates in the cylinder 8. In the suction stroke, air is sucked into the cylinder 8 from the suction port 10 </ b> A of the cylinder head 10 by opening the suction valve 12 and closing the discharge valve 13. Further, in the discharge stroke, the suction valve 12 is closed and the discharge valve 13 is opened, so that the compressed air compressed in the cylinder 8 is discharged to the outside from the discharge port 10B, and this compressed air is not shown. It is stored in the tank 26 via a discharge pipe or the like.

  Reference numeral 14 denotes a second cylinder provided on the right side surface of the crankcase 5, and the second cylinder 14 is similar to the first cylinder 7, and includes a cylinder 8, a valve plate 9, a cylinder head 10, a piston 11, and a suction valve 12. The discharge valve 13 and the like are opposed to the first cylinder 7 in the horizontal direction. In FIG. 9, reference numeral 15 denotes a third cylinder provided on the left side surface of the crankcase 5 along with the first cylinder 7, and 16 denotes a right side surface portion of the crankcase 5 at a position facing the third cylinder 15. The provided fourth cylinder is shown.

  The third cylinder 15 and the fourth cylinder 16 are configured in substantially the same manner as the first cylinder 7. During the operation of the compressor, the pistons 11 of the first cylinder 7 and the second cylinder 14 reciprocate in opposite phases, and the pistons 11 of the third cylinder 15 and the fourth cylinder 16 reciprocate in opposite phases.

  Reference numeral 17 denotes a suction silencer, for example, as two suction portions provided in the compressor body 4, and these suction silencers 17 are supplied to the cylinders 7, 14, 15, 16 via the inside of the crankcase 5. When air is sucked in, it removes dust and the like contained in the air, cleans the air, and prevents noise from leaking from the suction side of the compressor body 4.

  Here, as shown in FIGS. 1 and 7, the suction silencer 17 is disposed on the upper side of the apparatus including the compressor body 4, the motor 22, and the tank 26, and is accommodated in a silencer accommodating portion 32 described later. It is connected to the inlet 5 </ b> B of the crankcase 5 via an L-shaped connection pipe 18. These connection pipes 18 are inserted into pipe insertion holes 27C and 29A of partition plates 27 and 29 described later.

  During operation of the compressor, air is sucked into the crankcase 5 from the suction silencer 17 through the connection pipe 18 as indicated by arrows P, Q, and R in FIGS. This air cools various parts (for example, bearings) accommodated in the crank chamber 5A, and then flows into the cylinders 8 of the cylinders 7, 14, 15, 16 through the suction pipes 19 described later. The cylinder 8 is compressed.

  Reference numeral 19 denotes, for example, four suction pipes provided between the crankcase 5 and the cylinder heads 10 of the cylinders 7, 14, 15, 16. As shown in FIG. 9, one end side of these suction pipes 19 is connected to each outlet 5 </ b> C of the crankcase 5, and the other end side is connected to a suction port 10 </ b> A of each cylinder head 10.

  A driven pulley 20 is located outside the crankcase 5 and is attached to the crankshaft 6. The driven pulley 20 is rotationally driven by a motor 22, which will be described later, via a drive pulley 23 and a belt 24. Rotation is transmitted.

  Reference numeral 21 denotes an intake fan provided on the inner peripheral side of the driven pulley 20. The intake fan 21 is formed by, for example, an axial fan or the like and is driven together with the compressor body 4 by a motor 22. Then, as shown in FIG. 4, the intake fan 21 sucks outside air in the direction indicated by an arrow A from an intake port 35 described later, and flows in the directions indicated by arrows B and C toward the compressor body 4, the motor 22, and the tank 26. The cooling air is generated to cool these parts.

  Next, reference numeral 22 denotes a motor as a drive source provided in the equipment accommodating portion 31 of the soundproof box 1, and the motor 22 is energized from a power supply circuit or the like as shown in FIGS. The compressor main body 4 is driven.

  Here, the motor 22 is located on the lower side of the compressor body 4 and is mounted on the base 2 together with the tank 26. A drive pulley 23 is provided on the output shaft 22 </ b> A of the motor 22, and the drive pulley 23 is connected to the driven pulley 20 on the compressor body 4 side by a belt 24.

  Reference numeral 25 denotes an exhaust fan provided on the inner peripheral side of the drive pulley 23. The exhaust fan 25 is formed by, for example, an axial fan or the like, and is rotationally driven by the motor 22. The exhaust fan 25 discharges a part of the cooling air that has cooled the compressor body 4, the motor 22, the tank 26, and the like from a rear exhaust port 37, which will be described later, as indicated by an arrow D in FIG. 4. is there.

  Reference numeral 26 denotes a tank provided in the equipment accommodating portion 31 of the soundproof box 1, and this tank 26 is disposed on the pedestal 2 in a horizontally placed state, and is connected to each cylinder 7, 14, 15, 16 (cylinder head) by a discharge pipe or the like. 10) and the discharge port 10B. The tank 26 stores the compressed air discharged from the compressor body 4 and supplies the compressed air to the outside through a supply pipe or the like.

  Reference numeral 27 denotes a partition plate provided in the soundproof box 1, and the partition plate 27 cooperates with other partition plates 29 and 30 to be described later, as shown in FIGS. 2 to 4. Thus, the suction silencer 17 arranged on the upper side and the equipment composed of the compressor main body 4, the motor 22 and the tank 26 arranged on the lower side are partitioned.

  Here, the partition plate 27 is formed in a rectangular flat plate shape using, for example, a metal material, a resin material, and the like, and is attached to each support portion 1G of the soundproof box 1 and horizontally between the suction silencer 17 and each device. It extends to.

  Further, as shown in FIG. 7, the partition plate 27 is formed as a substantially rectangular partition plate portion 27 </ b> A at a portion surrounded by the partition plates 29 and 30, and the partition plate portion 27 </ b> A together with the partition plates 29 and 30. A silencer accommodating portion 32 described later is defined. In addition, a portion of the partition plate 27 other than the partition plate portion 27A serves as a guide plate portion 27B that constitutes a part of a cooling air guide 33 described later. The guide plate portion 27B has, for example, two pipe insertion holes 27C. Is provided.

  The partition plate 27 also has a role of a cooling air guide that distributes the cooling air to a desired position in the soundproof box 1. In this case, for example, the partition plate 27 is configured to guide the outside air so that the outside air taken into the soundproof box 1 does not immediately flow out from the upper exhaust port 39 of the top plate 1F.

  Further, three of the four sides of the partition plate 27 are arranged along the rear plate 1B, the left side plate 1C, and the right side plate 1D of the soundproof box 1, and between the remaining one side and the front plate 1A in FIG. As shown by arrow E, a ventilation passage 28 is formed through which a part of the cooling air flowing in the soundproof box 1 is circulated toward an upper exhaust port 39 described later.

  Reference numerals 29 and 30 denote, for example, two partition plates standing on the upper surface side of the partition plate 27 at a position surrounding the suction silencer 17 in an L shape, and these partition plates 29 and 30 are partition plates of the partition plate 27. By cooperating with the portion 27 </ b> A, a device housing portion 31 and a silencer housing portion 32 described later are defined in the soundproof box 1. In addition, as shown in FIG. 7, for example, two pipe insertion holes 29 </ b> A are provided in the partition plate 29.

  Reference numeral 31 denotes a device housing portion defined as a space excluding the silencer housing portion 32 in the soundproof box 1, and this device housing portion 31 is mainly disposed below the partition plate 27, and inside the compressor body 4. A device such as a motor 22 and a tank 26 is accommodated. The device accommodating portion 31 is blocked from the silencer accommodating portion 32 by the partition plates 27, 29, and 30.

  Reference numeral 32 denotes a silencer accommodating portion serving as a suction portion accommodating portion which is located above the partition plate 27 and defined in the soundproof box 1. As shown in FIG. 1, the silencer accommodating portion 32 accommodates the suction silencer 17 separately from the devices including the compressor body 4, the motor 22, and the tank 26, and warm air after cooling these devices absorbs the suction silencer 17. It is prevented from circulating to the position.

  And the silencer accommodating part 32 is the substantially square shape enclosed by the rear surface board 1B of the soundproof box 1, the left side surface board 1C, the top surface board 1F, the partition plate part 27A of the partition plate 27, and the other partition plates 29 and 30. It is formed as a space.

  Reference numeral 33 denotes a cooling air guide provided in the device accommodating portion 31 using, for example, a partition plate 27, and this cooling air guide 33 guides the cooling air sucked from the intake port 35 toward the compressor body 4. 7 and 8, for example, it is formed of a plurality of plates and the like, and extends downward from the partition plate 27 toward the compressor body 4.

  Here, the cooling air guide 33 includes a plurality of front plates 33A that cover the cylinders 7, 14, 15, and 16 from the front side, left and right side plates 33B and 33C that cover the cylinder head 10 of each cylinder from the side, For example, two inclined plates 33D extending obliquely downward from the lower surface of the partition plate 27 toward the compressor body 4, and a guide for the partition plate 27 to which these front plates 33A, side plates 33B and 33C, and the inclined plates 33D are attached. It is formed with the board part 27B.

  Further, the front plate 33A and the side plates 33B and 33C form a substantially U-shaped frame that surrounds the compressor body 4 from three directions. And the cooling air guide 33 distribute | circulates cooling air around the compressor main body 4 intensively, and raises the cooling efficiency.

  On the other hand, 34 indicates a silencer suction port as a suction port provided on the upper side of the left side plate 1C of the soundproof box 1, for example. As shown in FIG. 5, the silencer suction port 34 opens to the silencer housing portion 32 at a position facing each suction silencer 17, and when the compressor is in operation, as shown by an arrow P, low-temperature outside air is contained in the silencer housing. The part 32 is configured to be sucked.

  Reference numeral 35 denotes, for example, an air inlet provided in the rear plate 1B of the soundproof box 1, and this air inlet 35 is connected to the inside of the equipment housing 31 from the air intake duct 36 described later, as indicated by an arrow A in FIGS. Cooling air is sucked into each device. Here, as shown in FIG. 5 and FIG. 6, the intake port 35 opens to the rear plate 1 </ b> B at a position facing the intake fan 21 of the compressor body 4, and communicates the device accommodating portion 31 and the intake duct 36. Yes.

  Reference numeral 36 denotes an intake duct provided on the rear plate 1B of the soundproof box 1 at a position covering the intake opening 35. A cooling air inlet 36A through which outside air flows toward the intake opening 35 is provided on the left side surface of the intake duct 36. It has been.

  Reference numeral 37 denotes a rear exhaust port provided in the rear plate 1B of the soundproof box 1 at a position different from the intake port 35. The rear exhaust port 37 accommodates equipment as shown by an arrow D in FIGS. Cooling air in the portion 31 is discharged to the outside from an exhaust duct 38 described later. In this case, the rear exhaust port 37 opens to the rear plate 1 </ b> B at a position facing the exhaust fan 25 of the motor 22, and communicates the device accommodating portion 31 and the exhaust duct 38.

  38 is an exhaust duct provided on the rear plate 1B of the soundproof box 1 at a position covering the rear exhaust port 37. The exhaust duct 38 uses, for example, the wall surface of the intake duct 36 as shown in FIGS. Thus, an exhaust passage extending upward from the rear exhaust port 37 is formed. A cooling air outlet 38A is provided at the upper end of the exhaust duct 38 to allow the cooling air to flow out.

  39 is, for example, an upper exhaust port provided in the top plate 1F of the soundproof box 1, and the upper exhaust port 39 opens to the top plate 1F at a position different from the silencer housing 32 as shown in FIG. 31 communicates with the outside. Then, as shown by arrow E, the upper exhaust port 39 discharges the cooling air to the outside when the cooling air warmed and lightened by cooling each device reaches the position of the top plate 1F. The warm air is prevented from staying on the upper side of the soundproof box 1.

  The package type compressor according to the present embodiment has the above-described configuration, and the operation thereof will be described next.

  First, during the operation of the compressor, when the motor 22 is activated, the rotation is transmitted to the crankshaft 6 of the compressor body 4 via the pulleys 20, 23, the belt 24, etc., and the cylinders 7, 14, 15, 16 As the piston 11 reciprocates in the cylinder 8, the suction stroke and the discharge stroke are repeatedly executed in each cylinder.

  In the suction stroke, negative pressure is generated in the cylinder 8 of each cylinder, so that outside air (air) flows from the silencer suction port 34 of the soundproof box 1 to the suction silencer 17 as indicated by an arrow P in FIG. Sucked. As shown by an arrow Q in FIG. 10, this air flows into the crankcase 5 through the connection pipe 18 and becomes cooling air for cooling components such as bearings in the crank chamber 5A. Further, as shown by an arrow R, this air is sucked into the cylinder 8 of each cylinder through the suction pipe 19.

  Next, in the discharge stroke, the air sucked into the cylinder 8 is compressed by the piston 11 to become compressed air, and this compressed air is discharged from each cylinder 8 and stored in the tank 26. As described above, the compressor body 4 can directly suck and compress the external low-temperature air that does not circulate through the device housing portion 31 into the suction silencer 17.

  On the other hand, when the motor 22 is operated, the intake fan 21 on the compressor body 4 side and the exhaust fan 25 on the motor 22 side are rotationally driven, and in the soundproof box 1, these two fans 21 and 25 move in a fixed direction. Flowing cooling air is forcibly generated.

  In this case, first, when the intake fan 21 rotates, air flows from the cooling air inlet 36A of the intake duct 36 toward the intake port 35, and this air is, as shown by an arrow A in FIG. The air is sucked into the soundproof box 1 from the air inlet 35 and becomes cooling air. And this cooling air is guided to the vicinity of the compressor main body 4 by the cooling air guide 33 as shown by the arrow B, so that the cylinder 8, the cylinder head 10, the suction of each cylinder 7, 14, 15, 16 The pipe line 19 and the like can be efficiently cooled.

  Further, most of the cooling air that has cooled the compressor body 4 is guided downward, for example, along the front plate 33A of the cooling air guide 33, as indicated by an arrow C, so that it is located near the motor 22 and the tank 26. Distribute and cool these devices. Further, as indicated by an arrow D, the cooling air is sucked by the exhaust fan 25 and is discharged to the outside through the exhaust duct 38 from the rear exhaust port 37.

  On the other hand, as shown by an arrow E, a part of the cooling air that has cooled the compressor body 4 becomes lighter as the temperature rises, and the upper side of the soundproof box 1 passes through the air passage 28 on the side of the partition plate 27. To reach. And this cooling wind is discharged | emitted from the upper side exhaust port 39 outside as shown by arrow F. FIG.

  Thus, according to the present embodiment, since the device housing portion 31 and the silencer housing portion 32 are defined in the soundproof box 1, the suction silencer 17 can be housed in the silencer housing portion 32 and compressed. Devices such as the machine body 4, the motor 22, and the tank 26 can be accommodated in the device accommodating portion 31 outside the silencer accommodating portion 32.

  For this reason, during the operation of the compressor, the warm air after cooling each device can be retained in the device housing 31, and this warm air can be blocked from the periphery of the suction silencer 17. Thereby, it can prevent reliably that the temperature (intake | emission temperature) of the air inhaled by the compressor main body 4 rises.

  And since the external low-temperature air can be stably supplied to the suction silencer 17 from the silencer suction port 34 and this low-temperature air can be efficiently compressed, the compression performance can be improved. Further, since the temperature of the compressed air can be lowered by lowering the intake air temperature, the temperature inside the soundproof box 1 including the compressor body 4, the motor 22, the tank 26, etc. can be suppressed as a whole. In addition, it is possible to extend the service life by preventing thermal degradation of each component.

  In addition, since the devices such as the compressor main body 4, the motor 22, and the tank 26 can be cooled in the device accommodating portion 31 where the suction silencer 17 is not disposed, restrictions on the cooling structure in consideration of the intake temperature of the silencer and the like Can be eliminated. For this reason, the structure suitable for cooling of each apparatus can be implement | achieved easily, and cooling efficiency and heat resistance can be improved.

  Furthermore, by using the partition plates 27, 29, and 30, the device housing portion 31 and the silencer housing portion 32 can be easily defined in the soundproof box 1. Since the rigidity of the entire soundproof box 1 can be increased by the partition plate 27 and the like, the vibration of the soundproof box 1 can be suppressed during the compression operation, and a low noise type compressor can be realized.

  On the other hand, the soundproof box 1 is provided with the silencer suction port 34 that opens to the silencer housing portion 32. Therefore, during compression operation, low-temperature outside air can be sucked into the silencer housing portion 32 from the silencer suction port 34. The air can be directly guided to the vicinity of the suction silencer 17 without circulating the air around each device. Thereby, for example, even when the temperatures of the compressor body 4, the motor 22, the tank 26, and the like rise, low-temperature air can be stably supplied to the suction silencer 17.

  In addition, since the soundproof box 1 is provided with the intake port 35 and the exhaust ports 37 and 39 that open to the device accommodating portion 31, the cooling air can be sucked from the intake port 35 during the compression operation. Each device can be cooled stably. And the air after cooling can be rapidly discharged | emitted from the exhaust ports 37 and 39 to the exterior, the temperature rise in the soundproof box 1 can be suppressed, and heat resistance can be improved.

  Further, since the partition plate 27 is provided with the cooling air guide 33, the front plate 33A, the side plates 33B and 33C, the inclined plate 33D, etc. of the cooling air guide 33 are directed downward from the upper side of the compressor body 4 toward the side position. For example, a frame-shaped cooling air guide 33 surrounding the compressor main body 4 can be easily realized.

  Accordingly, the partition plate 27 can be used as an attachment site for the cooling wind guide 33. For example, since there is no need to provide an installation site for the guide on the inner wall of the soundproof box 1, the structure of the soundproof box 1 and the cooling wind guide are provided. The mounting structure 33 can be simplified. For example, even the cooling air guide 33 having a complicated shape including the front plate 33A, the side plates 33B and 33C, the inclined plate 33D, and the like can be easily disposed in the soundproof box 1 while being attached to the partition plate 27. it can.

  And at the time of a compression operation, the cooling air which flows through the soundproof box 1 can be guide | induced to the circumference | surroundings of the compressor main body 4, For example, the compressor main body 4 in which temperature rises easily among each apparatus can be cooled efficiently. .

  For example, when the partition plate 27 and the cooling air guide 33 are attached to and detached from the soundproof box 1 for maintenance of the compressor, these can be easily handled as one part. Since it is not necessary to separately attach and detach the cooling air guide 33, maintenance can be improved.

  Next, FIGS. 11 and 12 show a second embodiment according to the present invention, and the feature of this embodiment is that it is applied to a reciprocating compressor of the type that directly sucks air into the cylinder from the suction portion. is there. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  41 is a soundproof box of a package type compressor, and as shown in FIGS. 11 and 12, the soundproof box 41 has a front plate 41A, a rear plate 41B, a left side plate 41C, and a right side, as in the first embodiment. A face plate 41D, a bottom plate 41E, a top plate 41F, a support portion 41G, and the like are included.

  In the soundproof box 41, a device accommodating portion 45 that accommodates devices including the compressor body 4 ', the motor 22 and the tank 26, and a silencer accommodating portion 46 described later that accommodates the suction silencer 42 are defined. Yes.

  However, the suction silencer 42 is provided above each cylinder 7, 14, 15, 16 constituting the compressor body 4 ′, and these suction silencers 42 are connected to the cylinders of each cylinder via individual connection pipes 43. The suction port 10 </ b> A of the head 10 is connected. Thereby, each cylinder 7, 14, 15, 16 of the compressor body 4 'is configured to directly suck air into the cylinder 8 from the suction silencer 42.

  Reference numeral 44 denotes a partition plate provided in the soundproof box 41. The partition plate 44 is formed in a rectangular flat plate shape, for example, in the same manner as in the first embodiment. The suction silencer 42 arranged is partitioned from each device arranged on the lower side.

  In this case, the four sides of the partition plate 44 are disposed along the front plate 41A, the rear plate 41B, the left side plate 41C, and the right side plate 41D of the soundproof box 41, for example. In the soundproof box 41, a lower device housing part 45 and an upper silencer housing part 46 are defined by a partition plate 44.

  47 is a silencer suction port as a suction port provided on the top surface plate 41F of the soundproof box 41, for example. This silencer suction port 47 is located at a position facing each suction silencer 42 as shown in FIG. 46 is configured to suck low temperature outside air into the silencer housing 46.

  Thus, in the present embodiment configured as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment. In particular, in the present embodiment, a compressor of a type that directly intakes air from the suction silencer 42 to each cylinder 7, 14, 15, 16 (that is, a compressor that does not perform intake via the inside of the crankcase 5). ).

  In each of the above embodiments, the horizontal partition plates 27 and 44 are used to define the device accommodating portions 31 and 45 and the silencer accommodating portions 32 and 46. However, the present invention is not limited to this. For example, a box-shaped partition member surrounding the suction silencer may be used as in a modification shown in FIG. In this case, the partition member 51 is formed as a box-like body in which the partition plate portion 27A of the partition plate 27 according to the first embodiment and the partition plates 29 and 30 are combined. A silencer accommodating portion 52 that accommodates the suction silencer 17 is defined between the partition member 51 and the inner wall of the soundproof box 1. The cooling air guide 53 is mounted in the soundproof box 1 in a state of being separated from the partition member 51.

  In the embodiment, the cooling air guide 33 is attached to the partition plates 27 and 44. However, the present invention is not limited to this, and the cooling air guide 33 may be provided at an arbitrary part as long as vibrations generated from the compressor body 4 and the motor 22 are not transmitted. For example, the soundproof box 1 It is good also as a structure which attaches the cooling wind guide 33 to the inner wall.

  In the embodiment, the flat partition plates 27 and 44 are used. However, the partition plate of the present invention is not limited to a flat plate, and any partition part having an arbitrary shape and structure may be used as long as it partitions between the device housing portion and the silencer housing portion. .

  In the embodiment, the suction silencers 17 and 42 are provided in the silencer housing portions 32 and 46 of the soundproof boxes 1 and 41. However, the present invention is not limited to the suction silencer, and for example, various components that are preferably kept at a low temperature may be arranged in the silencer housing together with the suction silencer.

  Furthermore, in the embodiment, the description has been given by taking the air compressor having the reciprocating compressor main body 4 as the package type compressor as an example. However, the present invention is not limited to this, and for example, two scrolls face each other. The present invention may be applied to a scroll type compressor that performs a compression operation by making a swivel motion in the above state.

It is a perspective view showing a package type compressor by a 1st embodiment of the present invention. It is a perspective view which shows a package type compressor in the state which removed the front plate, the left side plate, and the top plate. It is a front view which shows a package type compressor in the state which removed the front plate. It is sectional drawing which fractured | ruptured the soundproof box, the partition plate, the cooling wind guide, etc. from the arrow IV-IV direction in FIG. It is the perspective view which looked at the package type compressor from the back side. It is a disassembled perspective view which shows the state which removed the intake duct and the exhaust duct from the package type compressor in FIG. It is a disassembled perspective view which shows the state which removed the suction silencer, the partition plate, etc. from the soundproof box in FIG. It is a disassembled perspective view which expands and shows the state before a partition plate and a cooling wind guide are assembled. It is a perspective view which expands and shows the compressor main body and suction silencer in FIG. It is sectional drawing which expanded the compressor main body from the arrow XX direction in FIG. It is a front view which shows the package type compressor by the 2nd Embodiment of this invention. It is sectional drawing which fractured | ruptured the soundproof box, the partition plate, the cooling wind guide, etc. from the arrow XII-XII direction in FIG. It is a perspective view which shows the package type compressor by the modification of this invention in the state similar to FIG.

Explanation of symbols

1,41 Soundproof box 4, 4 'Compressor body 5 Crankcase 6 Crankshaft 7, 14, 15, 16 Cylinder 17, 42 Suction silencer (suction part)
18, 43 Connection pipe 19 Suction line 20, 23 Pulley 21 Intake fan 22 Motor (drive source)
25 Exhaust fan 26 Tank 27, 29, 30, 44 Partition plate 28 Ventilation path 31, 45 Equipment accommodating part 32, 46, 52 Silencer accommodating part (suction part accommodating part)
33, 53 Cooling air guide 34, 47 Silencer suction port (suction port)
35 Intake port 36 Intake duct 36A Cooling air inlet 37 Rear exhaust port 38 Exhaust duct 38A Cooling air outlet 39 Upper exhaust port

Claims (4)

A soundproof box composed of a closed box, a compressor body that is provided in the soundproof box, sucks air from a suction portion and compresses and discharges compressed air, and is provided in the soundproof box and drives the compressor body A package-type compressor comprising: a drive source for driving; and a tank provided in the soundproof box for storing the compressed air.
The soundproof box is configured to include a device housing portion that houses the compressor body, a drive source, and a tank, and a suction portion housing portion that houses the suction portion separately from the device housing portion. Package type compressor.   The package type compressor according to claim 1, wherein the suction portion is a suction silencer.   The package type compressor according to claim 1 or 2, wherein the soundproof box is provided with a suction port for sucking outside air into the suction portion accommodating portion.   4. The package type compressor according to claim 1, wherein the soundproof box is provided with a cooling air guide that is located in the device accommodating portion and guides cooling air to the compressor body. 5.

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