JP5260426B2 - Package type compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact package type compressor that can be operated in outside environment while preventing intrusion of rain water into the compressor. <P>SOLUTION: To solve the above problem, in the package type compressor, an intake unit is constructed including: an intake box 19 provided with a fixed space 20 in the inlet of an intake opening 5a provided in a machine chamber 5; a louver 21 preventing intrusion of rain water obliquely falling into the machine chamber 5; and a duct 22 collecting the rain water intruded into a lower part of the space 20 overflowing the louver 21. An exhaust unit is constructed including: a fixed space 24 defined at an upper part of a cooling chamber 7 by a soundproof cover 23a covering a side face and by a soundproof cover 23b provided with an exhaust opening 30 and covering a ceiling; a shielding plate 26 intercepting the rain water falling into from the exhaust opening 30 in the space 24; a duct 25 provided for receiving the rain water; a mat 28 preventing splash of the rain water collided with the duct 25; a duct 27 collecting the rain water fallen in; and a hose 29 for discharging the rain water accumulated in the duct 27 outside the compressor. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a packaged air compressor.

  In general, a packaged air compressor is composed of a compressor body that generates compressed air, a motor that drives the compressor body, an electric box that houses electrical components, and the like, ventilation and compressed air in the machine room, A cooling chamber for cooling the lubricating oil is provided.

  As an example of the layout of such a packaged compressor, there is a structure in which a cooling chamber is arranged in the upper part of a machine room in order to reduce the installation space of the compressor (for example, see Patent Document 1).

  The cooling system of this structure has a cooling fan on the cooling chamber side and a cooler that performs heat exchange. The cooling fan takes in cooling air from an intake port provided on the side surface of the machine room, sends it to the heat exchanger, and supplies compressed air. And cooling the lubricating oil. Then, the exhaust is discharged upward to the atmosphere so as not to enter the intake port from the exhaust port provided in the ceiling cover of the compressor unit.

  As a feature of this structure, since the cooling air once passes through the machine room and becomes a flow for cooling the heat exchanger, there is a merit that the temperature rise in the machine room can be suppressed low.

  In addition, configurations shown in Patent Documents 2 and 3 are also known as examples in which cooling air is taken in from a side air inlet and an exhaust port is provided in a ceiling cover.

JP 2007-332788 A Japanese Unexamined Patent Publication No. 9-126172 Japanese Unexamined Patent Publication No. 9-126175

  When installed outdoors with the above-mentioned background technology structure, rainwater may enter the exhaust holes of the ceiling cover, and rainwater may reach the electrical components inside the electrical box via the cooling room or machine room. Moreover, there is a high possibility that rainwater that falls obliquely into the cooling air inlet of the machine room will enter the machine room as described above.

  For this reason, unless a part that is particularly waterproof or water-resistant is used, it may cause rusting of the part or malfunction of the electrical part, so it is desirable to install it indoors in this structure.

  Therefore, as a problem for enabling outdoor installation, it is necessary to make the structure further waterproofed while inheriting the above-described layout in order to share parts.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a compact package compressor that can be installed outdoors.

  In order to achieve the above object, a package type compressor of the present invention includes a compressor main body that compresses air, a motor that drives the compressor main body, an electric box that houses electrical components, and the compressor main body. An air cooler that cools the discharged compressed air, a cooling fan that blows cooling air to the air cooler, and the compressor body, the motor, the electric box, the air cooler, and the cooling fan that cover and communicate with the outside air And a waterproof structure that is provided outside the housing and covers at least a surface of the housing having the opening. The housing communicates with outside air and takes in outside air. One opening is provided on the side surface of the casing, and a second opening is provided on the top surface that communicates with the outside air and exhausts the air that has passed through the air cooler to the outside air, and the waterproof structure includes the first opening. And a surface covering the second opening, respectively, and an intake port and an exhaust port, the exhaust port being provided outside the upper projection surface of the second opening, The air inlet is partitioned by a partition member, and a drainage channel extending from the air inlet is provided below the air outlet.

In the above-described package type compressor of the present invention, more preferable specific embodiments are as follows.
(1) A water receiving portion that is located below the exhaust port and into which water that has entered from the exhaust port falls, and a shielding plate that partitions a part between the exhaust port and the second opening, An inclined member disposed below the shielding plate and inclined toward the water receiving portion; and the water receiving portion and the drainage channel are connected to each other.
(2) It arrange | positions so that the said shielding board may cross between the straight line which connects the edge part on the opposite side to said 2nd opening part of the said exhaust port, and the upper end part of the said inclination member.
(3) A mat having a thickness obtained by twisting plastic fibers is disposed on the upper surface of the inclined member.
(4) It is divided into a machine room in which the compressor body and the motor are arranged and a cooling room in which the air cooler and the cooling fan are arranged, and the first opening is provided in the machine room. The second opening is provided in the cooling chamber, communicates between the machine chamber and the cooling chamber, and has a cooling chamber opening through which air flows from the machine chamber to the cooling chamber by the cooling fan. Having.
(5) A space is provided between the air inlet and the first opening, and a water receiving portion for receiving water entering from the air inlet is provided at the bottom of the space.
(6) A louver that is inclined inwardly at the intake port is provided.
(7) Provided with an oil separator that supplies lubricating oil to the compressor body and separates compressed air and lubricating oil, and an oil cooler that cools the lubricating oil separated by the oil separator.

  According to the present invention, a compact package compressor that can be installed outdoors can be provided.

It is a figure which shows the whole structure which abbreviate | omitted and showed the waterproof unit about the package type compressor which concerns on a present Example. It is a figure which shows the whole structure of the state which mounted the waterproof unit about the package type compressor which concerns on a present Example. It is a figure which shows the detail of the waterproof structure of an exhaust side about the package type compressor which concerns on a present Example.

  Embodiments of the present invention will be described below with reference to the drawings.

  A package compressor according to a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a flow diagram of a packaged compressor before mounting a waterproof unit. FIG. 2 is a view in which a waterproof unit is mounted on the package type compressor of FIG. First, a basic cooling system for a package compressor will be described with reference to FIG.

  The packaged air compressor 1 includes a compressor body 3 that generates compressed air on a base 2 that serves as a base, a motor 4 that drives the compressor body 3, an electric box 6 that houses electrical components, and the like. And a cooling chamber composed of a cooling fan 9 for sucking cooling air for cooling the compressed air by an air cooler 10a and lubricating oil for cooling by an oil cooler 10b. It is covered with soundproof covers 8a and 8b for suppressing propagation.

  The soundproof covers 8a and 8b constitute a casing that covers the compressor body 3, the motor 4, the air cooler 10a, the oil cooler 10b, and the cooling fan 9, and a soundproof action is obtained by covering the structure that can be a noise source. ing.

  The cooling fan 9 takes in outside air from the air inlet 5a provided in the machine room 5, temporarily passes through the machine room 5 and takes in cooling air from the cooling chamber opening 7a, so that the temperature rise in the machine room 5 is kept low. There is a merit that can be.

  The compressor body 3 is transmitted with the driving force of the motor 4 via the belt 11 and pulleys 12a and 12b, whereby the compressor body 3 is driven to compress the air sucked from inside the machine chamber 5. .

  The compressor main body 3 has a pair of male and female rotors 3a and 3b, and the air sucked from the inside of the machine chamber 5 through the filter 13 and the suction throttle valve 14 is compressed by the rotors 3a and 3b. At this time, lubricating oil is sprayed into the compressor body 3 for cooling the rotors 3a and 3b and sealing between the rotors 3a and 3b, and the compressed air mixed with the lubricating oil is then oil. It is introduced into the tank 15. The compressed air separated from the lubricating oil in the oil tank 15 is then further separated from the lubricating oil by the oil separator 16, cooled by the air cooler 10 a via the pipe 17, and supplied to the user. Yes. On the other hand, the lubricating oil in the oil tank 15 is sent to the oil cooler 10b through the pipe 18a using the pressure difference between the primary and secondary sides of the rotors 3a and 3b and cooled. The cooled lubricating oil is sent to the compressor main body 3 through the pipe 18b and sprayed again on the rotors 3a and 3b.

  Here, the compressed air is cooled by the air cooler 10a, and the lubricating oil is cooled by the oil cooler 10b. The cooling fan 9 allows the outside air from the intake port 5a provided in the machine room 5 to pass through the machine room 5 at one end. After ventilating, the cooling air taken in from the cooling chamber opening 7a is passed through each cooler for heat exchange.

  Further, air that has exchanged heat with the cooler goes above the air inlet 5a provided in the machine room 5 and is not sucked again, so that it is above the air outlet 7b above the cooling chamber 7 provided in the soundproof cover 8b on the ceiling side. Exhausted.

  That is, on the side surface (soundproof cover 8a) of the casing, outside air is taken into the machine room 5 with an opening communicating with the inside and outside of the casing as an intake port 5a, and an opening on the ceiling surface (soundproof cover 8b) of the casing is formed. As the exhaust port 7b, the inside of the casing is cooled by exhausting air from above the casing.

  When the packaged compressor 1 is installed outdoors, rainwater enters the exhaust port 7b provided in the ceiling-side soundproof cover 8b, and the rainwater passes through the cooling chamber 7 and the machine room 5 and further to the electrical box 6 There is a possibility that it will reach the internal electrical components, and rainwater that falls obliquely into the intake port 5a provided in the machine room 5 is likely to enter the machine room 5 as described above.

  For this reason, unless the part which considered waterproofing and water resistance especially is used, since it may cause the rusting of a part and the malfunction of an electrical component, it is desirable to install this packaged compressor 1 indoors.

  In order to solve the above problems, a waterproof structure is attached to the packaged compressor 1 of FIG. FIG. 2 shows a flowchart of FIG. 2 in which a waterproof unit is mounted.

  FIG. 2 shows that the intrusion of rainwater entering the exhaust port 7b in the upper part of the cooling chamber 7 provided in the intake port 5a and the soundproof cover 8b provided in the machine room 5 of the package compressor 1 is prevented, collected, and taken out of the machine. A waterproof unit for discharging is attached.

  The air inlet side waterproof structure includes an air intake box 19 provided with a constant space 20 at an inlet of an air inlet 5a provided in the machine room 5, a louver 21 that prevents rainwater entering obliquely from entering the machine room 5, and The air intake unit is provided with a duct 22 that collects rainwater that has entered the louver 21 and has entered. This intake unit extends the base 2 and is mounted on it.

  As described above, the louver 21 has the effect of reducing the noise around the package by blocking the propagation of the mechanical sound generated in the machine room 5 from the intake port 5a in addition to the effect of preventing the intrusion of rainwater from the suction side. .

  Here, depending on the momentum of the rainwater, it may be possible that some rainwater collides with the louver 21 and scatters, so that the rainwater can get over the louver 21 and enter the intake port 5a. A certain space 20 is provided between the air inlet 5a and the louver 21 so as not to cause a problem. Moreover, although the rainwater which got over falls in this space 20, the duct 22 is provided in the lower part of this space 20, and this rainwater is collect | recovered.

  Further, the duct 22 is provided with a discharge hole 22a, while the base 2 is also provided with a hole 2a for discharging. By connecting the discharge hole, rainwater is dropped into the base 2 and discharged outside the machine.

  The space 20 can also be provided with a filter that prevents dust and insects in the intake air from entering the machine room.

  In this way, in the waterproof unit, the rainwater that has passed over the surface covering the opening (intake port 5a) of the housing is provided between the soundproof cover 8a and the waterproof unit without allowing rainwater to enter the housing through the intake port 5a. The duct 22 to be operated functions as a water receiving portion and can discharge rainwater to the outside.

  The waterproof structure on the exhaust port side has a fixed space 24 composed of a soundproof cover 23 a covering the side surface at the top of the cooling chamber 7 and a soundproof cover 23 b covering the ceiling provided with the exhaust port 30, and the exhaust port 30 in this space 24 A shielding plate 26 that blocks rainwater that falls from, a duct 25 that is provided to catch rainwater, a mat 28 that prevents scattering of rainwater that collides with the duct 25, and a duct 27 that collects rainwater that has fallen down The exhaust unit includes a hose 29 for discharging rainwater collected in the duct 27 to the outside of the machine.

  Cooling air from the cooling fan 9 in the cooling chamber 7 takes in outside air from a louver 21 installed in the intake unit, and once passes through the machine chamber 5 through an intake port 5 a provided in the machine chamber 5. After ventilating, heat is exchanged by taking it from the cooling chamber opening 7a and passing it through each cooler. This exhaust heat passes through the space 24 and is discharged from the exhaust port 30 provided in the cover 23b. Is done.

  Here, the exhaust port 30 is provided at a position at a certain distance so as not to overlap the exhaust port 7 b above the cooling chamber 7 in the horizontal direction. That is, the exhaust port 30 is provided outside the upper projection surface of the exhaust port 7b on the ceiling surface (soundproof cover 8b) of the housing. Further, a wall by the shielding plate 26 is provided between the exhaust port 7b and the exhaust port 30, and the exhaust path has a maze structure. The shielding plate 26 is provided at a position where rainwater does not enter the cooling chamber 7 directly when rainwater descends obliquely toward the cooling chamber 7 from the exhaust port 30.

  Therefore, the heat exhausted from the cooling chamber 7 is bent by the wall of the cover 23b that covers the ceiling, passes through a maze formed by the shielding plate 26, and is discharged from the exhaust port 30 provided at a fixed distance. Thus, although the passage resistance is larger than the conventional one, it is possible to prevent rainwater from entering the cooling chamber 7.

  Rainwater falling from the exhaust port 30 is received by the duct 25. Here, a mat 28 for preventing the rainwater from scattering is installed at the portion of the duct 25 where the rainwater collides, and the rainwater enters the cooling chamber 7 by the scattering. To prevent.

  The duct 28 has an inclined shape so as to guide the received rainwater to the duct 27. The duct 27 is provided with a groove 27a for storing a certain amount of rainwater, and a hose 29 for draining outside the machine is connected to this portion, and the other end of the hose 29 is connected to a discharge hole 2b provided in the base 2. . As a result, rainwater that has fallen from the exhaust port 30 is dropped into the base 2 so that it can be discharged outside the apparatus. The hose 29 is a drainage channel that is partitioned from the intake port and extends to the discharge hole 2b.

  By installing the intake unit and the exhaust unit in the package compressor 1, rainwater can be prevented from entering the compressor and can be installed outdoors. However, the external dimensions of the package are the space of the intake unit. It becomes larger to the side by the amount, and it becomes larger in the height direction by the space of the exhaust unit.

  Here, since the exhaust port 30 exists in the upper part of the intake unit and it is necessary to partition the intake unit and the exhaust unit, a partition member for partitioning the exhaust port 30 and the intake port is provided. In the present embodiment, the duct 27 is arranged so as to be used as a partition member.

As described above, it is important to provide the exhaust port 30 at a certain distance so as not to overlap with the exhaust port 7b in the upper part of the cooling chamber 7 in the horizontal direction. By providing the exhaust port 30 in the upper portion, a certain distance from the exhaust port 7b can be secured, and a compact waterproof unit can be configured without wasted space.
Rainwater that falls from the exhaust port 30 is blocked by a shielding plate 26 that blocks rainwater provided in the exhaust unit, a water receiving portion that receives rainwater and a duct 25 as a drainage function, and a mat 28 that prevents the rainwater that has been received from scattering. Although the penetration | invasion to the cooling chamber 7 is prevented, the positional relationship of these components is demonstrated using FIG. 3 here.

  In order not to affect the passage resistance of the cooling air, the end 25a of the duct 25 (the end closer to the cooling chamber 7) is installed at a position where it does not overlap as much as possible with respect to the exhaust port 7b. The shield plate 26 is attached to the soundproof cover 23b. Here, the tip 26a of the shield plate 26 connects the end 30a of the exhaust port 30 (the end far from the cooling chamber 7) and the end 25a of the duct 25. A shape that secures a length that intersects straight lines. Further, by attaching the shielding plate 26 as close to the exhaust port 30 as possible, the passage area of the cooling air can be secured and the shape of the shielding plate 26 can be reduced.

  Accordingly, even when the rainwater intrusion angle α1 descending from the exhaust port 30 is 90 °, the rainwater can be prevented from entering the cooling chamber 7 by being blocked by the shielding plate 26 or received by the duct 25.

  As described above, the present embodiment includes a compressor body 3 that compresses air, a motor 4 that drives the compressor body 3, a machine room 5 that includes an electrical component box 6 that houses electrical components, and the like. In the package type compressor provided with a cooling chamber 7 for cooling the ventilation and compressed air and lubricating oil in the machine room 5, intrusion of rainwater into the compressor is prevented, and the collected rainwater is discharged outside the machine. It is equipped with a waterproof unit.

  By incorporating the waterproof unit shown in this embodiment, it is possible to prevent rainwater from entering the machine in an outdoor environment, and to operate without compromising the basic layout of the compressor. Machine can be realized.

  DESCRIPTION OF SYMBOLS 1 ... Package type compressor, 2 ... Base, 2a, 2b ... Discharge hole, 3 ... Compressor main body, 3a, 3b ... Rotor, 4 ... Motor, 5 ... Machine room, 6 ... Electric box, 7 ... Cooling chamber, 7a ... Opening, 7b ... Exhaust port, 8a, 8b ... Soundproof cover, 9 ... Cooling fan, 10a ... -Air cooler, 10b ... Oil cooler, 11 ... Belt, 12a, 12b ... Pulley, 13 ... Filter, 14 ... Suction throttle valve, 15 ... Oil tank, 16 ... Oil separator, 17 ... piping, 18a, 18b ... piping, 19 ... intake box, 20 ... space, 21 ... louver, 22 ... duct, 22a ... discharge hole, 23a 23b ... soundproof cover, 24 ... space, 25. .. Duct, 25a ... end of duct 25, 26 ... shielding plate, 26a ... tip of shielding plate 26, 27 ... duct, 27a ... groove 28 ... anti-scattering mat, 29 ... Drain hose, 30 ... Exhaust port, 30a ... End of exhaust port.

Claims (8)

  A compressor body that compresses air, a motor that drives the compressor body, an electric box that houses electrical components, an air cooler that cools the compressed air discharged from the compressor body, and a cooling to the air cooler A cooling fan that blows air; a casing that covers the compressor body, the motor, the electric box, the air cooler, and the cooling fan; and an opening that communicates with outside air; and is provided outside the casing. A waterproof structure that covers at least a surface of the housing having an opening, and the housing includes a first opening on the side of the housing that communicates with outside air and takes in outside air, and communicates with the outside air. A second opening for discharging the air that has passed through the air cooler to the outside is provided on the upper surface, and the waterproof structure has a surface that covers the first opening and a surface that covers the second opening. Each suck And an exhaust port, and the exhaust port is provided outside the upper projection surface of the second opening, and is partitioned from the intake port by a partition member. A package-type compressor having a drainage channel that extends and is partitioned from the intake port below.   2. The package-type compressor according to claim 1, which is located below the exhaust port and between a water receiving portion where water that has entered from the exhaust port falls, and between the exhaust port and the second opening portion. A package comprising: a shielding plate that divides a portion; and an inclined member that is disposed below the shielding plate and is inclined toward the water receiving portion, wherein the water receiving portion and the drainage channel are connected to each other. Shape compressor.   3. The package compressor according to claim 2, wherein the shielding plate crosses a straight line connecting an end portion of the exhaust port opposite to the second opening portion and an upper end portion of the inclined member. A packaged compressor characterized by being arranged.   4. The package type compressor according to claim 3, wherein a mat having a thickness obtained by twisting plastic fibers is disposed on an upper surface of the inclined member.   The package type compressor according to any one of claims 1 to 4, wherein the compressor is partitioned into a machine room in which the compressor body and the motor are arranged and a cooling room in which the air cooler and the cooling fan are arranged. The first opening is provided in the machine chamber, the second opening is provided in the cooling chamber, communicates between the machine chamber and the cooling chamber, and the machine chamber is provided by the cooling fan. A packaged compressor having a cooling chamber opening through which air flows from the cooling chamber to the cooling chamber.   The package compressor according to any one of claims 1 to 5, wherein a space is provided between the air inlet and the first opening, and water that enters from the air inlet is received at the bottom of the space. A package type compressor having a water receiving portion.   The package type compressor according to any one of claims 1 to 6, wherein the intake port is provided with a louver inclined upward inward.   The package type compressor according to any one of claims 1 to 7, further comprising an oil separator that supplies lubricating oil to the compressor body and separates compressed air and lubricating oil, and is separated by the oil separator. A package type compressor having an oil cooler for cooling the lubricating oil.

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