JP5707280B2 - Package type compressor. - Google Patents

Description

The present invention relates to a package type compressor including a plurality of compressors that compress and discharge sucked air, for example.

  The package type fluid machine disclosed in Patent Document 1 has a plurality of fluid machine units arranged inside a casing.

JP 2005-98147 A

  In the package type fluid machine of Patent Document 1, a plurality of fluid machines stacked vertically are arranged in two rows. A plurality of fluid machines arranged in two rows are cooled by supplying cooling air from an intake passage provided therebetween, but are supplied to a plurality of fluid machines provided in each row. Since the direction of the cooling air is opposite, the cooling air is not supplied efficiently. Here, if cooling air in the same direction is supplied to a plurality of fluid machines arranged in two rows, it becomes a shadow of the fluid machine arranged on the upstream side of the cooling air, and the fluid machine arranged on the downstream side Cooling air is hard to be supplied, and cold air is hard to be supplied to a fluid machine arranged downstream.

  An object of this invention is to provide the package type compressor which improved the cooling efficiency by arrange | positioning so that the cold air may be easily supplied to several compressors.

In order to solve the above-described problems, the present invention provides a package provided with an intake port for sucking cooling air inside and an exhaust port for discharging the cooling air to the outside, and sucks and compresses air provided in the package A plurality of compressor main bodies, and a plurality of the plurality of compressor main bodies are arranged from the intake port toward the exhaust port, and a lower gap through which cooling air flows is provided below the compressor main body , the dimensions of the upper gap between the compressor main body and the upper surface of the package to provide a package-type compressor characterized that you arranged to be larger than the size of the lower gap.

  ADVANTAGE OF THE INVENTION According to this invention, the package type compressor which improved cooling efficiency can be provided by arrange | positioning so that the cold air may be easily supplied to several compressors.

It is a whole block diagram which shows the package type compressor which has arrange | positioned several compressor main bodies. BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram which shows the package type compressor by Example 1 of this invention. It is a whole block diagram which shows the package type compressor by Example 2 of this invention. It is a whole block diagram which shows the package type compressor by Example 3 of this invention. It is a whole block diagram which shows the package type compressor by Example 4 of this invention. It is a whole block diagram which shows the package type compressor by Example 5 of this invention.

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

  The overall configuration of the package type compressor in each embodiment of the present invention will be described with reference to FIG.

  The package 1 covers the entire package type compressor such as the frame 2, the compressor main bodies 3a, 3b, 3c, and the tank 5, which will be described later, from six directions, and shields noise generated from the compressor main bodies 3a, 3b, 3c. An intake port 6 for sucking cooling air into the interior and an exhaust port 7 for discharging cooling air to the outside are provided.

  The frame 2 supports compressor main bodies 3a, 3b, 3c provided on a tank 5 described later.

  The compressor main bodies 3a, 3b, 3c each sucks and compresses air and discharges the compressed air to a tank 5 described later, and is configured as, for example, a scroll compressor or a reciprocating compressor. If the reciprocating compressor is described as an example, the compressor bodies 3a, 3b, 3c are constituted by, for example, a motor, a compression unit (piston, cylinder, cylinder head), and the piston driven by the motor is a cylinder. By reciprocating the inside, the air sucked from the suction port is compressed, and the compressed air is discharged from the discharge port to the tank 5 described later. The compressor main bodies 3a, 3b, 3c are arranged in the package 1 in the order of 3a, 3b, 3c from the side closer to the intake port from the intake port 6 to the exhaust port 7 described later. By arrange | positioning in such an order, several compressor main body 3a, 3b, 3c can be cooled only by flowing cooling air to one direction. Further, if the compressor main bodies 3a, 3b, 3c are cooled from the side surfaces, the cooling efficiency is improved, but a large number of cooling fans 4, intake ports 6 and exhaust ports 7 are arranged to increase the respective areas. In addition, it is necessary to provide a duct having a complicated shape inside, which increases the cost and noise. Therefore, in order to realize low cost and low noise, in this embodiment, the compressor main bodies are arranged in the order of 3a, 3b, and 3c from the side closer to the intake port from the intake port 6 toward the exhaust port 7.

  Furthermore, by arranging the suction ports of the compressor main bodies 3a, 3b, 3c closer to the intake port 6 of the package 1 than the discharge port, the rise in the temperature of the air sucked from the suction port can be reduced. In addition, the temperature of the air compressed by the compressor main bodies 3a, 3b, 3c and discharged to the tank 5 can be reduced. As a result, the temperature rise in the entire package 1 can be reduced. Further, the rise in the temperature of the air sucked from the suction port can be reduced by arranging the suction ports of the compressor bodies 3a, 3b, 3c closer to the suction port 6 of the package 1 than the motor and the compression unit. Can do.

  The cooling fan 4 is disposed inside the package 1 and circulates cooling air from the intake port 6 toward the exhaust port 7. In the present embodiment, the exhaust fan is disposed at the exhaust port 7, but may be configured as an intake fan, or both an intake fan and an exhaust fan may be provided.

  The tank 5 is disposed below the frame 2 and stores compressed air compressed by the compressor main bodies 3a, 3b, 3c, and is formed as a cylindrical sealed container with both ends closed.

  Here, since the compressor main bodies 3a, 3b, 3c generate a large amount of heat due to the heat generated by driving the motor or the generation of compression heat, the cooling efficiency is improved and the reliability and life of the compressor main bodies 3a, 3b, 3c are improved. It is necessary to plan. In the package type compressor of FIG. 1, the compressor main bodies 3a, 3b, 3c are arranged at the same height on the frame 2, and the cooling air flows into the space of the plurality of compressor main bodies 3a, 3b, 3c. It has become difficult. When three or more compressor main bodies are arranged, the cooling air is particularly difficult to be supplied to the compressor main bodies 3b arranged therebetween. Further, since the compressor main bodies 3a, 3b, 3c are directly arranged on the tank 5 via a frame, the cooling air does not flow below the compressor main bodies 3a, 3b, 3c, and the cooling efficiency is improved. Not planned. The compressor bodies 3a, 3b, and 3c each have a suction port that sucks in air for compression. If the cooled air is not supplied to the suction ports, the compressor bodies 3a, 3b, 3c, 3c, the tank 5 becomes even hotter.

  In each embodiment of the present invention, in view of the above problems, the plurality of compressor bodies 3a, 3b, 3c are arranged so as to be easily supplied with cold air. Each embodiment of the present invention will be described with reference to FIGS.

  A first embodiment of the present invention will be described with reference to FIG. In the present embodiment, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, upper gaps A, B, and C through which cooling air flows are provided between the compressor bodies 3a, 3b, and 3c and the package 1, and are located below the compressor bodies 3a, 3b, and 3c (compressor). Lower gaps A ′, B ′, C ′ through which cooling air flows are provided between the main bodies 3a, 3b, 3c and the frame 2). Thereby, cooling air can be supplied to the upper and lower sides of the compressor bodies 3a, 3b, 3c, and the compressor bodies 3a, 3b, 3c can be efficiently cooled from above and below. In this embodiment, the lower gaps A ′, B ′, C ′ are provided between the compressor bodies 3 a, 3 b, 3 c and the frame 2. However, the compressor bodies 3 a, 3 b, 3 c are cooled from the lower side. If the structure is possible, for example, the compressor main bodies 3a, 3b, 3c and the frame 2 may be integrally formed, and the lower gaps A ′, B ′, C ′ may be provided between the frame 2 and the tank 5. .

  Further, in this embodiment, the dimensions of the upper gap and the lower gap are set so that the dimensions of the upper gap are larger (A> A ′, B> B ′, C> C ′). As a result, a large amount of cooling air is supplied to the upper gaps of the compressor bodies 3a, 3b, and 3c, and the flow of the upper gaps A, B, and C becomes the main flow of the cooling air. Can be distributed efficiently. In addition, the cooling air passing through the lower parts of the compressor bodies 3a and 3b is generated from the space on both sides of the compressor 3b to the upper side where the pressure is low, and the cooling air is efficiently sent around the compressors 3a, 3b and 3c. It can flow.

  Furthermore, the compressor body close to the intake port is higher than the compressor body far from the intake port so that the relationship between the dimensions of the upper gap and the lower gap is A <B <C, A '> B'> C '. Thus, the compressor main bodies 3a, 3b, and 3c are arranged. As a result, first, the flow after passing through the upper part of the compressor body 3a is such that the upper gaps A and B of the compressor bodies 3a and 3b are A <B, so that the cooling air flowing through the upper gap A is compressed by the compressor. The flow between the main bodies 3a and 3b can be reduced, and the cooling air can be efficiently supplied to the upper gap B side. With respect to the compressor main body 3c, by setting B <C, the cooling air flowing between the compressor main bodies 3b and 3c can be reduced. Cooling air can be efficiently supplied to the upper gap C side and the exhaust port 7 side.

  As described above, according to the present embodiment, the stagnation around the compressor main bodies 3a, 3b, and 3c and the shortage of the cooling air that are difficult for the cooling air to flow are eliminated, the temperature of the compressor main bodies 3a, 3b, and 3c is reduced, and the intake overheat is reduced It is possible to improve performance.

  A second embodiment of the present invention will be described with reference to FIG. 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.

  In the present embodiment, in addition to the configuration of the first embodiment, L-shaped cooling air guides 8a and 8b are disposed between the compressor main bodies 3a and 3b and between the compressor main bodies 3b and 3c, respectively. is there. The cooling air guides 8a and 8b are brought close to the compressor main body on the side close to the intake port 6, and a part of the space between the compressor main bodies 3a, 3b and 3c and the upper gaps A, B and C is blocked. By installing in this way, the flow on the upper gaps A, B, C side can reduce the flow flowing between the compressor bodies 3a, 3b, 3c, and the space between the compressor bodies 3a, 3b, 3c And the cooling air between the upper gaps A, B and C can flow efficiently.

  A third embodiment of the present invention will be described with reference to FIG. 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.

  In the present embodiment, the flow at the package inlet 6 is guided in order to efficiently distribute the cooling air to the upper gaps A, B, C side and the lower gaps A ′, B ′, C of the compressor bodies 3a, 3b, 3c. Divide by 9. This reduces the turbulent flow that hits the compressor body 3a on the inlet side, and efficiently cools the upper and lower gaps A, B, C and lower gaps A ', B', C of the compressor bodies 3a, 3b, 3c up and down. Wind can flow.

  Embodiment 4 of the present invention will be described with reference to FIG. 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.

  In this embodiment, the duct 10 is installed in order to flow the flows on the upper gaps A, B, and C side more efficiently. Thereby, the flow on the side of the upper gaps A, B, C can reduce the flow flowing between the compressor bodies 3a, 3b, 3c, and the space between the compressor bodies 3a, 3b, 3c and the upper gap A , B, C can efficiently flow cooling air. Further, an opening is provided in the bottom surface of the duct 10 at the compression portions (cylinder heads) of the compressor main bodies 3a, 3b, 3c and at the portions between the compressor main bodies 3a, 3b, 3c. By allowing the compression part (cylinder head) to enter the duct 10, the cooling efficiency of the compression part (cylinder head) that becomes hot during operation can be increased. Also, an opening is provided between the compressor bodies 3a, 3b, 3c, and a flow from the lower gaps A ′, B ′ to the compressor bodies 3a, 3b, 3c is ensured as in the first embodiment. can do.

  Embodiment 5 of the present invention will be described with reference to FIG. 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.

  In this embodiment, the duct 10 is structured to match the height of the compressor body (duct 11), so that only the necessary part of the cylinder head is cooled. The duct 11 is adjusted to the height of the compressor bodies 3a, 3b, 3c, and the vertical dimension increases as the flow path in the duct 11 moves from the top of the compressor body 3a toward the compressor body 3b, the compressor body 3c. By adopting a simple structure, even without the cooling air guides 8a and 8b of the second embodiment, the cooling air flowing between the upper gaps A, B and C and the compressor main bodies 3a, 3b and 3c can be used. Can prevent the cooling air from flowing efficiently. In addition, by providing an opening in the bottom surface of the duct in the same manner as in the fourth embodiment, the flow between the lower gaps A ′ and B ′ to the compressor main bodies 3a, 3b, and 3c is performed as in the first embodiment. Can be secured.

  According to the embodiments described so far, the cooling of the plurality of compressor bodies 3a, 3b, 3c is improved, and the performance is improved. In addition, the cooling fan 4 can be reduced in size and number by efficiently flowing cooling air.

  In the embodiments described so far, the number of compressor main bodies is not limited to three. For example, even if there are two or four compressor bodies, the same effect can be obtained by using the same installation method as in Embodiment 1-5. be able to. Moreover, the same effect is acquired also about the cooling wind guides 8 and 9 and the ducts 10 and 11 by combining Example 1-5, for example. For example, the cooling efficiency can be further increased by the combination of the second and third embodiments and the combination of the third and fourth embodiments.

  In this description, the tank 5 is included in the package 1, but the presence or absence of the tank is not particularly limited.

  The embodiments described so far are merely examples of implementation in carrying out the present invention, and the technical scope of the present invention is not limitedly interpreted by these. That is, the present invention can be implemented in various forms without departing from the technical idea or the main features thereof.

  As a simple modification, the same effect can be obtained even when unit control is used as a compressor capable of capacity control.

1: Package 2: Frame 3a to c: Compressor body 4: Fan 5: Tank 6: Package inlet 7: Package outlet 8a, b: Cooling air guide 1
9: Cooling air guide 2
10: Internal duct 1
11: Internal duct 2

Claims (9)

Comprising an internal in the cooling air sucked air inlet, a package and an exhaust port is provided for discharging the cooling air to the outside, a plurality of the compressor body for compressing sucking air is provided in the package, and
A plurality of the compressor main bodies are arranged from the intake port toward the exhaust port, and a lower gap through which cooling air flows is provided below the compressor main body ,
Package type compressor characterized that you arranged such dimensions of the upper gap is larger than the size of the lower gap between the upper surface and the compressor body of the package. Package type compressor according to claim 1, towards the compressor body closer to the intake port, characterized in Rukoto disposed above the distant compressor body than the air inlet. 2. The package type compressor according to claim 1 , wherein a cooling air guide that blocks a part of a space between the upper gap and the compressor body is disposed between the plurality of compressor bodies . Among the plurality of compressor main bodies, the cooling air is divided into the cooling air toward the upper gap and the cooling air toward the lower gap between the compressor main body located closest to the air inlet and the air inlet. The package type compressor according to claim 3 , wherein a cooling air guide is provided . The package type compressor according to claim 1 , wherein a duct for circulating cooling air is provided in the upper gap . The package type compressor according to claim 5 , wherein the duct is provided with an opening through which cooling air flows between the plurality of compressor bodies . Among the plurality of compressor main bodies, the compressor main body is disposed at a position farther from the intake port than the vertical dimension of the flow path in the duct above the compressor main body disposed at a position close to the intake port. The package type compressor according to claim 5 , wherein a vertical dimension of the flow path in the duct is increased . 6. The package compressor according to claim 5 , wherein an opening is provided so that a part of the compression portion of the compressor main body enters the duct . The compressor main body includes a suction port for sucking air and a discharge port for discharging compressed air, and the suction port is disposed closer to the suction port in the package than the discharge port. The package type compressor according to claim 1 .

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