JP5817775B2 - Chiller device - Google Patents

Description

  The present invention relates to a chiller device, and more particularly to measures for improving its assemblability.

  In general, the chiller device forms a heat medium circulation system with the compressor, the heat source side heat exchanger, the expansion valve, and the use side heat exchanger, and includes the use side heat exchanger and the pump. The heat medium is circulated between the high-temperature or low-temperature heat medium obtained in the circulation system and the heat medium of the other circulation system in the use side heat exchanger, for example, air conditioning. It is the structure which heats or cools the indoor etc. of object.

  Conventionally, as such a chiller device, for example, in the one shown in Patent Document 1, a heat exchange chamber is provided above and a machine room is provided below, and a plurality of heat source heat exchangers are arranged in the heat exchange chamber. In the chamber, a plurality of compressors and a water heat exchanger (use side heat exchanger) are arranged corresponding to the plurality of heat source heat exchangers.

JP 2008-202857 A

  By the way, when the chiller device is enlarged, it is desirable to divide the whole into a plurality of parts and assemble them at the installation site in consideration of their transportability when they are installed on the roof of a building.

  Therefore, in the conventional chiller apparatus, for example, it is conceivable to separate the heat exchange chamber and the machine room and further separate the separated heat exchange chamber and machine room into a plurality of parts.

  However, in this idea, a heat exchanger for a heat source is disposed in each separated heat exchange chamber, a compressor is disposed in each separated machine room, and further, a plurality of separated machine chambers are separated. One of them has a water heat exchanger (use side heat exchanger), and the heat source heat exchanger, the compressor, and the water heat exchanger (use side heat exchanger) are different from each other. It becomes the structure arrange | positioned in a chamber. Therefore, at the installation site, piping connection between the compressor and the heat source heat exchanger, piping connection between the heat source heat exchanger and the water heat exchanger (use side heat exchanger), and water heat exchange. There are many places where piping connection is required, such as the need for piping connection between the compressor (use side heat exchanger) and the compressor, and there is a drawback that the assemblability is poor.

  In view of the above-mentioned drawbacks, the present invention aims to improve the assembling performance by limiting the number of necessary places for piping connection at the installation site even when separating the chiller device into a plurality of parts to improve the transportability. There is to plan.

In order to achieve the above object, the chiller device of the first invention is a chiller device that is separated into at least two types of units and connected by piping between the two types of units. It is a use side unit (5) having a heat medium system including a side heat exchanger (20, 21) and a pump (45) for sending the heat medium to the use side heat exchanger (20, 21), and one other type The unit of the compressor (30) and the heat source side heat exchanger (2) so as to supply a low temperature or high temperature heat medium to the usage side heat exchanger (20, 21) in the usage side unit (5). A plurality of heat source side units (1LF to 1RR) having a heat medium system including the plurality of heat source side units (1LF to 1RR) arranged side by side in the left and right and front and rear directions, and the use side unit ( 5) is disposed at a position below the plurality of heat source side units (1LF to 1RR), and further, a stand (5) on which the use side unit (5) is placed. 0), and the gantry (50) can be divided into a plurality of blocks (50LF) to (50RR) whose units are the sizes of the heat source side units (1LF) to (1RR). To do.

In the first invention, since the chiller device is separated into the plurality of heat source side units and the use side unit, it is easy to transport these units to the installation site. Furthermore, since the compressor and the heat source side heat exchanger are built into each heat source side unit in a pipe connection state, the compressor and the heat source side heat exchanger of each heat source side unit are used in the use side unit. If connected to the side heat exchanger, it is possible to form a circulation system in which the heat source side low-temperature or high-temperature heat medium is heat-exchanged by the use side heat exchanger. Therefore, when connecting the plurality of heat source side units and the use side unit at the installation site, it is only necessary to connect the pipes between the plurality of heat source side units and the use side unit. Compared with fewer pipe connections, assembly is easier.

In addition, since it is a vertical chiller device in which a use side unit is arranged below a plurality of heat source side units arranged side by side in the left and right and front and rear directions, from the use side unit to a plurality of heat source side units above it The difference in length between the refrigerant pipes can be shortened .

Furthermore, even if the platform on which the usage-side unit is placed is large, this platform can be divided into a plurality of blocks in units of the size of the heat-source-side unit, so when transporting to the installation site, the heat-source-side unit It can be transported in the same size as, and is highly transportable.

According to a second aspect of the present invention, in the chiller apparatus, the use side unit (5) and the plurality of heat source side units (1LF to 1RR) are connected by piping via the shut-off valves (36, 37). Features.

In the second invention, in a factory or the like, for example, the heat medium is sealed in a plurality of heat source side units by a shutoff valve, and after connecting to the user side unit by piping at the installation site, the shutoff valve is opened. Operation of the chiller device can be started .

  According to the chiller device of the first aspect of the invention, since the heat source side unit and the use side unit are separated, the chiller device can be easily transported to the installation site, and the piping connection location at the installation site is reduced. Because it requires less, it is easy to assemble.

In addition, since the vertical chiller device has the utilization side unit arranged below the plurality of heat source side units, it is possible to reduce the difference in the length of the refrigerant pipe from the utilization side unit to the heat source side unit above it. is there.

Furthermore, the use side unit can be transported as the same size unit as the heat source side unit, and the transportability can be improved.

According to the second invention, the heat medium can be sealed in advance in, for example, the heat source side unit in a factory or the like, so that the assembling property at the installation site can be improved .

FIG. 1 is a perspective view showing the overall configuration of the chiller device according to the embodiment. FIG. 2 is a view showing a refrigerant piping system of the chiller device. FIG. 3 is a perspective view showing the arrangement position of the internal device and the piping position of the refrigerant pipe in a state where the use side unit provided in the chiller device is placed on the gantry. It is a top view which shows the arrangement position of the internal apparatus of the same use side unit, and the piping position of refrigerant | coolant piping.

(Embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

  FIG. 1 is a perspective view showing the overall configuration of the chiller apparatus. In the chiller shown in the figure, (1LF), (1RF), (1LR), and (1RR) are multiple (4 units) heat source side units, two in the left-right direction and two in the front-rear direction. Are arranged at a predetermined interval. These heat source side units (1LF) to (1RR) have the same configuration, and inside the air cooling type heat source side heat exchanger (2), its air cooling fan (2a), and its fan driving motor (Not shown) is accommodated, and in the same figure, a compressor, a four-way switching valve, an electronic expansion valve, an accumulator, and the like (not shown) are accommodated. The arrangement positions of these devices are the same in the horizontal direction in the two front heat source units (1LF) and (1RF), and in the rear two heat source units (1RF) and (1RR) The two front heat source units (1LF) and (1RF) and the position of the point object.

  Further, (5) is a use side unit, inside which two water heat exchangers are arranged as use side heat exchangers (not shown in FIG. 1). The two water heat exchangers are connected in series, and a water pipe (10) for circulating water as a heat medium is connected to the upstream water heat exchanger, and the water (heat) from the downstream water heat exchanger is connected. A water pipe (11) from which the medium flows out is connected.

  The four heat source side units (1LF) to (1RR) are located at a predetermined distance from each other, and are placed on a quadrangular pedestal (12) that is large enough to accommodate these four units. On the other hand, the use side unit (5) is mounted on a quadrangular pedestal (50) which is the same size as the four heat source side unit pedestals (12) and is integrally formed with the pedestal (12). . The gantry (12) can be divided into four blocks (12LF) to (12RR) located on the left and right and front and rear, with a size that allows a single heat source unit to be placed with a margin. The heat source side units (1LF) to (1RR) are placed on the four blocks (12LF) to (12RR) of the gantry (12). On the other hand, the gantry (50) can also be divided into four blocks (50LF) to (50RR) located on the left and right and front and rear, like the gantry (12). The use side unit (5) is arranged in the block (50RF) on the right front side of the gantry (50), and the use side unit (5) is located below the heat source side unit (1RF) located on the right front side. In addition, a control unit (60) for controlling the entire chiller apparatus is disposed in the right rear block (50RR) of the gantry (50).

<Refrigerant circulation system>
FIG. 2 shows a refrigerant circulation system of the chiller apparatus. In this chiller device, four heat source side units (1LF) to (1RR) are provided for two water heat exchangers (use side heat exchangers) (20) and (21) provided in the use side unit (5). In this configuration, two heat source units (1RF, 1RR) and (1LF, 1LR) are connected per water heat exchanger (20, 21).

  Specifically, the two water heat exchangers (20) and (21) of the usage side unit (5) in FIG. 2 have first heat transfer sections (20a) and (21a), and the first The second heat transfer section (20b) and (21b) that exchange heat with the heat transfer sections (20a) and (21a), and the first heat transfer sections (20a) and (21a) as well. It has 3rd heat-transfer part (20c) and (21c). In one of the water heat exchangers (20), the second heat transfer section (20b) is connected to the right rear heat source side unit (FIG. 1) via the liquid refrigerant pipe (25) and the gas refrigerant pipe (26). 1RR), and the third heat transfer section (20c) is connected to the right heat source side unit (1RF) in FIG. 1 via the liquid refrigerant pipe (25) and the gas refrigerant pipe (26). Similarly, in the other water heat exchanger (21) of the use side unit (5), the second heat transfer section (21b) is connected to the liquid refrigerant pipe (25) and the gas refrigerant pipe (26) in FIG. It is connected to the left rear heat source side heat exchanger (1LR), and the third heat transfer section (21c) is connected to the left front heat source side of FIG. 1 via the liquid refrigerant pipe (25) and the gas refrigerant pipe (26). Connected to heat exchanger (1LF).

  Inside the use side unit (5), the heat transfer sections (20a) and (21a) of the two water heat exchangers (20) and (21) are connected in series by a water pipe (40). It has a water pump (45). The water pump (45) is connected to the cold / hot water inlet (46) from the load, and the water discharged from the water pump (45) is transferred to the two water heat exchangers (20) connected in series. They are connected by water pipes (41) and (42) so as to flow through the hot parts (20a) and (21a) to the cold / hot water outlet (47) to the load.

  Next, the internal configuration of the four heat source side units (1LF) to (1RR) will be described. These heat source side units (1LF) to (1RR) have the same configuration. Hereinafter, the internal configuration of the left front heat source unit (1LF) in FIG. 1 will be described as an example. In the heat source side unit (1LF), (30) is a compressor, (31) is a four-way switching valve, (2) is the air-cooling heat source side heat exchanger, and the air-cooling fan (2a) and the fan And a driving motor (2b). Further, (32) is an electronic expansion valve, and (34) is an accumulator. These devices are connected by a refrigerant pipe (35), and the end of the refrigerant pipe (35) from the electronic expansion valve (32) to the water heat exchanger (21) of the use side unit (5) Is provided with a shut-off valve (36), and is also provided at the end of the refrigerant pipe (35) from the four-way selector valve (31) to the water heat exchanger (21) of the use side unit (5). ) Is placed. The closing valve (36) on the electronic expansion valve (32) side is connected to a third heat transfer section (one of the water heat exchangers (21) of the utilization side unit (5) via the liquid refrigerant pipe (25) ( 21c) is connected to one end of the four-way switching valve (31) side closing valve (37) through the gas refrigerant pipe (26) one of the use side unit (5) one of the water heat exchanger (21) Connected to the other end of the third heat transfer section (21c).

  Therefore, during the cooling operation of the chiller device, in the heat source side units (1LF) to (1RR), the four-way switching valve (31) is switched as shown by the solid line, and the refrigerant from the compressor (30) is sequentially switched to the four-way. Valve (31), heat source side heat exchanger (2), electronic expansion valve (32), water heat exchanger (20, 21) of use side unit (5), four-way switching valve (31), accumulator (34 ) And repeatedly returning to the compressor (30), the heat absorbed by the water heat exchanger (20, 21) of the user side unit (5) is dissipated to the air by the heat source side heat exchanger (2). To do. On the other hand, during the heating operation of the chiller device, in the heat source side units (1LF) to (1RR), the four-way switching valve (31) is switched as indicated by the broken line, and the refrigerant from the compressor (30) is sequentially switched to the four-way switching. Valve (31), water heat exchanger (20, 21) of user side unit (5), electronic expansion valve (32), heat source side heat exchanger (2), four-way selector valve (31), accumulator (34 ) And returning to the compressor (30), the heat quantity obtained from the air at the heat source side heat exchanger (2) is dissipated by the water heat exchanger (20, 21) of the user side unit (5). To do.

<Internal configuration of user side unit>
Next, the layout configuration of equipment and piping in the use side unit (5) will be described. FIG. 3 shows a perspective view of equipment and piping in the use side unit (5) placed on the gantry (50), and FIG. 4 shows a plan view thereof. In these figures, the gantry (50) corresponds to the four heat source side units (1LF) to (1RR) as described above, and the size of each of the heat source side units (1LF) to (1RR) is the unit. Can be separated into a total of four blocks (50LF), (50RF), (50LR), and (50RR).

  In the right front block (50RF), internal devices of the use side unit (5) are arranged. In the right front block (50RF), two water heat exchangers (20), (21) of the use side unit (5) are arranged side by side in the left-right direction on the left rear side in the block. The lower part of the water heat exchanger (20) on the right side in the figure and the upper part of the water heat exchanger (21) on the left side in the figure are the first heat transfer of these water heat exchangers (20) and (21). The parts (20a) and (21a) are connected by a water pipe (40) connecting the parts. Further, the water pump (45) is arranged on the right front side of the right front block (50RF) in the drawing. The water pump (45) is connected to a water pipe (53) connected from the front end of the block (50RF) to the cold / hot water inlet (46), and the water discharged from the pump (45) A water pipe (10) is connected from the upper center position of the heat exchanger (20) to the first heat transfer section (20a). Furthermore, at the lower part of the left-side water heat exchanger (21), there is a water pipe (11) from the first heat transfer section (21a) inside thereof toward the cold / hot water outlet (47) through the front end of the block (50RF). ) Is connected.

  In addition, two refrigerant pipes (70), (71) are connected to the upper and lower parts of the right end of the right side of the water heat exchanger (20) in the figure, and these refrigerant pipes (70), (71) are connected. The right rear block (50RR) extends to the upper right rear end in the figure, and the heat source side heat exchanger (2) in the heat source side unit (1RR) arranged above the block (50) and the four-way Connected to the switching valve (31). Similarly, two refrigerant pipes (70), (71) extending to the upper left front end of the right front block (50RF) are also provided at the upper left and lower ends of the right side of the water heat exchanger (20) in the drawing. Connected to the heat source side heat exchanger (2) in the heat source side unit (1RF) arranged above the block (50RF) via these refrigerant pipes (70), (71) and four-way Connected to the switching valve (31). Furthermore, on the upper and lower portions of the right end of the left side of the water heat exchanger (21) in the figure, and on the upper and lower portions of the left end of the figure, the upper left and right upper blocks of the left rear block (50LR) ( A pair of refrigerant pipes (70), (71) each extending to the upper left front end of (50LF) are connected to each other, and the heat source side units disposed above the blocks (50LR), (50LF), respectively. Connected to the heat source side heat exchanger (2) and the four-way selector valve (31) in (1RR).

  3 and 4, a control unit (60) for controlling the chiller device is disposed at the rear end of the right rear block (50RR). The control unit (60) is connected to a water pump (45) in the right front block (50RF) via a control cable (61) extending forward.

<Effect of this embodiment>
With the above configuration, in this embodiment, when the chiller device is transported to the installation site, the four heat source side units (1LF) to (1RR) and the gantry (12LF) to (12RR) are transported individually. In addition, the user side unit (5) placed on the gantry (50RF) and the three gantry units (50LF), (50LR), (50RR) can be transported individually, so that the entire chiller device is transported as a unit Compared with, transportability is much better.

  Further, in the four heat source side units (1LF) to (1RR), a compressor (30), a four-way switching valve (31), a heat source side heat exchanger (2), an electronic expansion valve (32 ), An accumulator (34) is disposed, and these devices are sequentially connected by a refrigerant pipe (35). On the other hand, two water heat exchangers (use side heat exchangers) (20) and (21) are arranged in the use side unit (5). Therefore, when assembling the chiller device at the installation site, the four blocks (50LF) to (50RR) from the two water heat exchangers (20), (21) to the gantry (50) of the user side unit (15) 4 heat source side units (1LF) to (1RR) closing valves (36) shown in FIG. 2 through a total of eight refrigerant pipes (70) and (71) (see FIGS. 3 and 4). , (37), the refrigerant circulation system on the heat source side is configured in a closed circuit. Therefore, for example, when the chiller device is separated into three types of units, a unit in which the heat source side heat exchanger is arranged, a unit in which the compressor is arranged, and a unit in which the use side heat exchanger is arranged. In comparison, it is possible to reduce the number of necessary piping connections required when assembling the chiller device at the installation site, and the assembly is good.

  In addition, this chiller device is a vertical chiller device in which a use side unit (5) is arranged below a total of four heat source side units (1LF) to (1RR) arranged on the left and right and front and rear sides. 5) Since the two water heat exchangers (20) and (21) are placed in the center of the gantry (50), the two water heat exchangers (20 ), (21) and the four heat source side units (1LF) to (1RR) above the four sets of refrigerant pipes (70), (71) can be shortened.

  Moreover, in the four heat source side units (1LF) to (1RR), the water heat exchanger (20) of the use side unit (5), the second and third heat transfer sections (20b) of (21), ( 21b), (20c), and (21c) are connected to the refrigerant pipes (25) and (26) at the locations where the shut-off valves (36) and (37) are respectively arranged. In (1LF) to (1RR), it is possible to seal the refrigerant in advance at a factory or the like. Therefore, it is possible to eliminate the work of sealing the refrigerant at the installation site and to improve the work efficiency.

  Furthermore, the base (50) on which the use side unit (5) is placed can be divided into four blocks (50LF) to (50RR) in units of the size on which the heat source side unit (1LF to 1RR) can be placed. Therefore, when transporting to the installation site, it can be easily transported in the same size as the heat source side unit (1LF to 1RR), and transportability is high.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  In the above embodiment, two water heat exchangers (20) and (21) are arranged in the use side unit (5) and four heat source side units (1LF) to (1RR) are provided. The configuration of connecting two refrigerant systems of two heat source units (1LF, 1LR) and (1RF, 1RR) per water heat exchanger (20), (21) was illustrated, but the present invention is not limited to this Not. In the present invention, for example, two water heat exchangers (20) and (21) are each provided with a fourth heat transfer section, and further two heat source side units are separately provided. A configuration may be adopted in which the separately provided heat source side unit is connected to the unit, and each refrigerant system of the three heat source side units is connected to one hydrothermal exchanger. Further, the number of water heat exchangers is not limited to two, and three or more water heat exchangers may be arranged, and each of the water heat exchangers may be connected to each refrigerant system of a plurality of heat source side units.

  In the above embodiment, the refrigerant circulation system of the chiller device shown in FIG. 2 is shown. However, for example, the four-way switching valve (31) is not provided, and the chiller device is limited to only the cooling operation or the heating operation. May be.

  Furthermore, in the said embodiment, although the heat source side unit (1LF)-(1RR) in total 4 units | sets were arrange | positioned on the right and left and front and back, the vertical chiller apparatus which has arrange | positioned the utilization side unit (5) below was illustrated. It is good also as a horizontal chiller apparatus which arrange | positions a utilization side unit to the side of a plurality of heat source side units. However, in the case of the vertical type described in the present embodiment, there is an effect that the difference between the lengths of the refrigerant pipes connecting the heat source side units and the use side units can be shortened.

  In addition, in the above embodiment, the control unit (60) is arranged in the right rear block (50RR) of the gantry (50), but is arranged in the other left front or left rear block (50LF), (50LR). Alternatively, when the chiller device is a horizontal type, it may be disposed on the side of the heat source side unit or on the side of the use side unit.

  Moreover, in the said embodiment, as shown in FIG. 2, the closing valve (36), (37) was arrange | positioned to each heat-source side unit (1LF)-(1RR), However, A closing valve is also used for the utilization side unit (5). May be provided.

  Furthermore, in the above embodiment, the water pump (45) is arranged in the use side unit (5), but the water pump (45) may be separately arranged at a predetermined location on the installation site, and the use side unit (5 ) Is not necessarily placed in the parenthesis.

  In addition, in the refrigerant circulation system of FIG. 2, the accumulator (34) is arranged in each heat source side unit (1LF), (1RF), (1LR), (1RR). It is.

  As described above, the present invention is separated into a plurality of heat source side units and utilization side units, so that it can be easily transported to the installation site, and there are few connection points for the refrigerant piping when assembling at the installation site. Since it is easy to assemble, it is useful as a chiller device.

1LF to 1RR Heat source side unit 2 Heat source side heat exchanger 2a Blower fan 2b Drive motor 5 User side unit 10, 11 Water piping 12 Base 12LF to 12RR block 20, 21 Water heat exchanger (user side heat exchange) vessel)
20a, 21a First heat transfer section 20b, 21b Second heat transfer section 20c, 21c Third heat transfer section 25, 26 Refrigerant pipe 30 Compressor 31 Four-way switching valve 32 Electronic expansion valve 34 Accumulator 35 Refrigerant pipe 36, 37 Shut-off valve 40 Water pipe 50 Base 50LF to 50RR for use side unit Block 60 Control unit 70, 71 Refrigerant pipe

Claims (2)

A chiller device that is separated into at least two types of units and is connected by piping between the two types of units,
One type of unit is a utilization side unit (5) having a heat medium system including a utilization side heat exchanger (20, 21) and a pump (45) for sending the heat medium to the utilization side heat exchanger (20, 21). And
Another type of unit exchanges heat between the compressor (30) and the heat source so as to supply a low-temperature or high-temperature heat medium to the use-side heat exchanger (20, 21) in the use-side unit (5). A plurality of heat source side units (1LF to 1RR) having a heat medium system including a heater (2) ,
The plurality of heat source side units (1LF to 1RR) are arranged side by side in the left-right and front-rear directions,
The use side unit (5) is disposed at a position below the plurality of heat source side units (1LF to 1RR),
Furthermore, it has a gantry (50) on which the use side unit (5) is placed,
The chiller apparatus characterized in that the gantry (50) can be divided into a plurality of blocks (50LF) to (50RR) whose units are the sizes of the heat source side units (1LF) to (1RR) . The chiller device according to claim 1 , wherein
The chiller device, wherein the use side unit (5) and the plurality of heat source side units (1LF to 1RR) are connected to each other through shutoff valves (36, 37).

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