JP2013148275A - Air-cooling chiller system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-cooling chiller system blocking exhaust discharged from an exhaust port 61 from flowing into an intake space A formed between respective air-cooling chillers 10.SOLUTION: An air-cooling chiller system includes, in parallel, two groups or more of air-cooling chiller groups 1 with a plurality of air-cooling chillers 10 provided to be arrayed in series. The adjacent paired air-cooling chiller groups 1 are opposed to each other with a distance. Each air-cooling chiller 10 is provided with an exhaust port 61 on its upper face, and is provided with an intake port 62 on a face opposed to the other air-cooling chiller group 1. In the air-cooling chiller system, a blocking member 70 is provided to block the exhaust discharged from the exhaust port 61 of each air-cooling chiller 10 from flowing into an intake space A formed between the respective air-cooling chiller groups 1.

Description

  The present invention relates to an air-cooled chiller system including a plurality of air-cooled chillers.

  An air-cooled chiller is a device that cools water by heat exchange between a refrigerant and water. A conventional air-cooled chiller will be described with reference to FIG. FIG. 4 is a schematic perspective view showing an example of the configuration of a conventional air-cooled chiller, in which a part of the main body cover is omitted for easy understanding. FIG. 5 is a schematic perspective view showing an example of the configuration of a conventional air-cooled chiller system including a plurality of air-cooled chillers shown in FIG.

  The air-cooled chiller 110 shown in FIG. 4 includes an air-side heat exchange chamber 111 provided in the upper part, a machine room 112 provided in the lower part, and a body cover 113 that covers the air-side heat exchange room 111 and the machine room 112. It consists of.

  The air-side heat exchange chamber 111 is provided above the pair of air-side heat exchangers 120 and three pairs of air-side heat exchangers 120 formed in a V shape with their lower portions adjacent to each other and vertically upward. And an air blower 130. The air-side heat exchanger 120 is a condenser and dissipates heat of condensation to the air when the refrigerant condenses.

  The machine chamber 112 is decompressed by a compressor 140 that compresses the refrigerant and sends it to the air-side heat exchanger 120, an expansion valve (not shown) that decompresses the refrigerant sent from the air-side heat exchanger 120. A cold water heat exchanger 150 that performs heat exchange between the refrigerant and water. The cold water side heat exchanger 150 is an evaporator, and cools water by absorbing heat of evaporation from water when the refrigerant evaporates.

  The main body cover 113 is provided with six exhaust ports 161 for exhausting exhaust air sent from the blowers 130 on the upper surface thereof, and air intake ports composed of a plurality of holes on both side surfaces facing the air-side heat exchanger 120. 162 is provided.

  The refrigerant in a high temperature and high pressure gas state compressed by the compressor 140 is sent to the air-side heat exchanger 120. In the air-side heat exchanger 120, the refrigerant in the high-temperature and high-pressure gas state is condensed to become a refrigerant in the high-temperature and high-pressure liquid state by exchanging heat with the air sucked from the intake port 162, and also radiates the heat of condensation to the air. . The high-temperature air that has received this heat of condensation is discharged from the exhaust port 161 to the atmosphere by the blower 130.

  On the other hand, the refrigerant that has been condensed into a high-temperature and high-pressure liquid state is depressurized by an expansion valve (not shown) and sent to the cold water side heat exchanger 150. In the cold water side heat exchanger 150, the refrigerant in the low temperature and low pressure liquid state is evaporated to become a refrigerant in the low temperature and low pressure gas state, and cools the water by absorbing the heat of evaporation from the water. The refrigerant that has been evaporated into a low-temperature and low-pressure gas state is sent to the compressor 140. On the other hand, the cooled water is used for cooling the heat source.

  As shown in FIG. 5, in order to cool a large-scale heat source such as equipment in a factory, an air-cooled chiller group 100 in which a plurality of air-cooled chillers 110 are arranged in series is provided to ensure cooling capacity. An air-cooled chiller system provided in parallel with two or more groups is used. In this case, in order to arrange the large air-cooled chiller 110 in a limited installation space in a factory, it is usual to arrange a pair of adjacent air-cooled chillers 100 so as to be opposed to each other.

JP 2010-276231 A JP 2005-16863 A

  However, when the air-cooled chiller 110 is arranged as shown in FIG. 5, each air-cooled type is different from the “intake space A” formed between the air-cooled chillers 110 through which the air inlet 162 sucks air. The exhaust discharged from the chiller exhaust port 161 may flow in. Therefore, in the air-side heat exchanger 120, the intake air becomes high temperature, and heat exchange between the refrigerant in the high-temperature and high-pressure gas state and the air is not sufficiently performed. As a result, the cooling efficiency of each air-cooled chiller decreases. There was a problem that.

  On the other hand, devices that control the direction and air volume of the exhaust discharged from the exhaust port have been conventionally known (Patent Document 1 and Patent Document 2).

  However, it is not preferable to provide a mechanism for controlling the direction and the amount of air discharged from the exhaust port because the air-cooled chiller system becomes complicated and expensive.

  The present invention has been devised to pay attention to the above problems and to effectively solve them. An object of the present invention is to provide an air-cooled chiller system that has a simple and inexpensive structure that shields exhaust air discharged from an exhaust port from flowing into an intake space formed between each air-cooled chiller group. Is to provide.

  The present invention comprises two or more air-cooled chiller groups provided in parallel so that a plurality of air-cooled chillers are arranged in series, and a pair of adjacent air-cooled chiller groups are spaced apart from each other. Each air-cooled chiller has an exhaust port on the top surface and an air intake port on the surface facing the other air-cooled chiller groups, and intake air formed between the air-cooled chiller groups. The air-cooled chiller system is characterized in that a shielding member is provided to shield the exhaust gas discharged from the exhaust port of each air-cooled chiller from flowing into the space.

  According to the present invention, the shielding member shields the intake air formed between the air-cooled chiller groups so that the high-temperature exhaust discharged from the exhaust port of each air-cooled chiller does not flow in. The exhaust can be prevented from flowing into the intake port. Therefore, it is possible to prevent the cooling efficiency of each air-cooled chiller from being lowered due to the exhaust gas flowing into the intake port.

  Preferably, the shielding member is provided so as to bridge a pair of adjacent air-cooled chillers. With such a configuration, it is possible to prevent the exhaust gas discharged from the exhaust port from flowing into the intake ports provided on the mutually opposing surfaces of a pair of adjacent air-cooled chiller groups with a single shielding member. it can.

  For example, the shielding member is a flat plate. In this case, the exhaust discharged from the exhaust port can be prevented from flowing into the intake port with a simple and inexpensive configuration.

  Alternatively, the shielding member is a plate curved in an arch shape. In this case, a wide intake space can be secured and intake can be performed efficiently.

  Preferably, two air-cooled chiller groups are provided.

  According to the present invention, the shielding member shields the intake air formed between the air-cooled chiller groups so that the high-temperature exhaust discharged from the exhaust port of each air-cooled chiller does not flow in. The exhaust can be prevented from flowing into the intake port. Therefore, it is possible to prevent the cooling efficiency of each air-cooled chiller from being lowered due to the exhaust gas flowing into the intake port.

1 is a schematic perspective view of an air-cooled chiller system according to an embodiment of the present invention. It is the schematic which shows an example of a structure of the air-cooled chiller of FIG. In order to facilitate understanding, a part of the main body cover is omitted. It is a schematic perspective view which shows the other structural example of the shielding member of FIG. It is a schematic perspective view which shows an example of a structure of the conventional air cooling type chiller. In order to facilitate understanding, a part of the main body cover is omitted. It is a schematic perspective view which shows an example of a structure of the conventional air cooling type chiller system provided with two or more air cooling type chillers shown in FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of an air-cooled chiller system according to an embodiment of the present invention. FIG. 2 is a schematic diagram illustrating an example of the configuration of the air-cooled chiller in FIG. 1, and a part of the main body cover is omitted for easy understanding.

  As shown in FIG. 1, the cooling system of the present embodiment includes two groups of air-cooled chiller groups 1 provided so that three air-cooled chillers 10 are arranged in series.

  First, the air-cooled chiller 10 will be described with reference to FIG. An air-cooled chiller 10 shown in FIG. 2 includes an air-side heat exchange chamber 11 provided in the upper part, a machine room 12 provided in the lower part, and a body cover 13 that covers the air-side heat exchange room 11 and the machine room 12. It consists of.

  The air-side heat exchange chamber 11 is provided above three pairs of air-side heat exchangers 20 formed in a V shape with their lower portions adjacent to each other and vertically upward, and above each pair of air-side heat exchangers 20. The blower 30 is provided. The air side heat exchanger 20 is a condenser, and dissipates heat of condensation to the air when the refrigerant condenses.

  The machine room 12 is decompressed by a compressor 40 that compresses the refrigerant and sends it to the air-side heat exchanger 20, an expansion valve (not shown) that decompresses the refrigerant sent from the air-side heat exchanger 20. And a cold water side heat exchanger 50 that performs heat exchange between the refrigerant and water. The cold water side heat exchanger 50 is an evaporator, and cools water by absorbing heat of evaporation from water when the refrigerant evaporates.

  The main body cover 13 is provided with six exhaust ports 61 for discharging exhaust gas sent from each blower 30 on the upper surface thereof, and air intake ports composed of a plurality of holes on both side surfaces facing the air-side heat exchanger 20. 62 is provided.

  Returning to FIG. 1, the air-cooled chiller group 1 provided so that the above-described three air-cooled chillers 10 are arranged in series is arranged so as to be opposed to each other. Each air-cooled chiller 10 is arranged so that the exhaust port 61 faces vertically upward and the intake port 62 faces the surface facing the other air-cooled chiller group 1.

  Further, in the air-cooled chiller system, as a feature of the present invention, the “intake space A” formed between the two air-cooled chiller groups 1 is discharged from the exhaust port 61 of each air-cooled chiller 10. A shielding member 70 that shields the exhaust gas from flowing in is provided. Here, the “intake space A” is a region where the intake port 62 sucks air and is a space formed between the air-cooled chillers 10. Specifically, the shielding member 70 is a flat plate provided to bridge a pair of adjacent air-cooled chiller groups 1. However, in FIG. 1, the shielding member 70 is composed of a single flat plate, but the shielding member 70 is composed of three flat plates adjacent to each other, and each pair of air-cooled chillers 10 in the pair of air-cooled chiller groups 1 is provided. It may be provided so as to crosslink one by one.

  Next, the operation of the present embodiment configured as described above will be described with reference to FIGS.

  The refrigerant in the high-temperature and high-pressure gas state compressed by the compressor 40 of each air-cooled chiller 10 is sent to the air-side heat exchanger 20. In the air-side heat exchanger 20, the refrigerant in the high-temperature and high-pressure gas state is condensed to become a refrigerant in the high-temperature and high-pressure liquid state by exchanging heat with the air sucked from the intake port 62, and releases the heat of condensation to the air. . The high-temperature air that has received this heat of condensation is discharged from the exhaust port 61 by the blower 30. The air discharged from the exhaust port 61 is shielded by the shielding member 70 so as not to flow into the “intake space A” formed between the two air-cooled chiller groups 1.

  On the other hand, the refrigerant that has been condensed into a high-temperature and high-pressure liquid state is depressurized by an expansion valve (not shown) and sent to the cold water side heat exchanger 50. In the cold water side heat exchanger 50, the refrigerant in the low temperature and low pressure liquid state is evaporated to become a refrigerant in the low temperature and low pressure gas state, and the water is cooled by absorbing heat of evaporation from the water. The refrigerant that has been evaporated into a low-temperature and low-pressure gas state is sent to the compressor 40. On the other hand, the cooled water is used for cooling the heat source.

  According to the present invention, the shielding member 70 prevents hot exhaust gas discharged from the exhaust port 61 of each air-cooled chiller 10 from flowing into the intake space A formed between the air-cooled chiller groups 1. Therefore, the exhaust gas can be prevented from flowing into the intake port 62. Therefore, it is possible to prevent the cooling efficiency of each air-cooled chiller 10 from being lowered due to the exhaust gas flowing into the intake port 62.

  Further, since the shielding member 70 is provided so as to bridge the pair of adjacent air-cooled chiller groups 1, the exhaust discharged from the exhaust port 61 faces the pair of adjacent air-cooled chiller groups 1. The single shielding member 70 can prevent the air from flowing into the air inlets 62 provided on the surface.

  Furthermore, since the shielding member 70 is a flat plate, the exhaust discharged from the exhaust port 61 can be prevented from flowing into the intake port 62 in a simple and inexpensive manner.

  In the present embodiment, two air-cooled chiller groups 1 are provided. However, the present invention is not limited to such an example, and three or more air-cooled chiller groups 1 may be provided.

  In the above embodiment, as shown in FIG. 1, the example in which the shielding member 70 is formed of a flat plate provided so as to bridge a pair of adjacent air-cooled chiller groups 1 is shown. It is not limited to a specific example. FIG. 3 shows another configuration example of the shielding member 70. In the example illustrated in FIG. 3, the shielding member 70 is configured by a plate that is curved vertically upward in an arch shape. In this case, a wide intake space A can be secured and intake can be performed efficiently.

  The configuration of the air-cooled chiller 10 is not limited to the type shown in FIG. 2 and, at the very least, an exhaust port is provided on the upper surface and faces other air-cooled chiller groups. It suffices if an intake port is provided on the surface.

DESCRIPTION OF SYMBOLS 1 Air-cooled chiller group 10 Air-cooled chiller 11 Air side heat exchange chamber 12 Machine room 13 Main body cover 20 Air side heat exchanger 30 Blower 40 Compressor 50 Chilled water side heat exchanger 61 Exhaust port 62 Inlet port 70 Shield member 100 Air-cooled type Chiller group 110 Air-cooled chiller 111 Air side heat exchange chamber 112 Machine room 113 Main body cover 120 Air side heat exchanger 130 Blower 140 Compressor 150 Cold water side heat exchanger 161 Exhaust port 162 Inlet port A Intake space

Claims (5)

Two or more air-cooled chiller groups provided so that a plurality of air-cooled chillers are arranged in series are provided in parallel, and a pair of adjacent air-cooled chiller groups face each other apart from each other,
Each air-cooled chiller has an exhaust port on its upper surface and an air intake port on the surface facing the other air-cooled chiller group,
An air-cooling type characterized in that a shielding member is provided to shield the exhaust air discharged from the exhaust port of each air-cooling chiller from flowing into the intake space formed between each air-cooling chiller group. Chiller system.   The air-cooled chiller system according to claim 1, wherein the shielding member is provided so as to bridge a pair of adjacent air-cooled chillers.   The air-cooled chiller system according to claim 2, wherein the shielding member is a flat plate.   The air-cooled chiller system according to claim 2, wherein the shielding member is a plate curved in an arch shape.   The air-cooled chiller system according to any one of claims 1 to 4, wherein each of the air-cooled chiller groups is provided in two.

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