JP2018054249A - Refrigeration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide refrigeration device capable of simplifying a refrigerant pipe or a peripheral structure thereof.SOLUTION: A refrigeration device includes: a plurality of refrigerant circuits where a compressor (12), an air heat exchanger and a receiver (15) are connected; electric component boxes (81) for a plurality of systems having electric components (81a) each corresponding to a plurality of compressors (12); and a support frame having a plurality of frame parts (70A, 70B, 70C, 70D) aligned in a row. In the frame parts (70A, 70B, 70C, 70D) aligned in a row, the compressor (12), the air heat exchanger, the receiver (15) and the electric component box (81) for system, which correspond to each other, are installed as a single unit.SELECTED DRAWING: Figure 8

Description

    The present invention relates to a refrigeration apparatus.

    Conventionally, a refrigeration apparatus such as an air conditioner is known.

    For example, the refrigeration apparatus disclosed in Patent Document 1 includes a plurality of refrigerant circuits to which a compressor, an air heat exchanger, and the like are connected, and a horizontally long support frame on which these devices are installed. The plurality of air heat exchangers are arranged in a line in the longitudinal direction of the support frame. On the other hand, the plurality of compressors are arranged, for example, near the front side of the support frame (see, for example, FIG. 9 of the same document).

JP 2013-079735 A

    As described in Patent Document 1, when a plurality of compressors and other devices are gathered and arranged near one side of the support frame, each compressor and other devices (for example, air heat) corresponding to these compressors are arranged. The relative position with respect to the exchanger is different for each such unit. In other words, in the refrigeration apparatus, the layout of refrigerant pipes and the like that connect each compressor and other devices is different for each unit. Therefore, the refrigerant pipe and the attachment structure associated with the refrigerant pipe become complicated, which leads to an increase in the cost of the refrigeration apparatus.

    This invention is made paying attention to such a subject, and is providing the refrigerating apparatus which can aim at simplification of refrigerant | coolant piping and its peripheral structure.

    1st invention respond | corresponds to the several refrigerant circuit (10) to which a compressor (12), an air heat exchanger (50,60), and a receiver (15) are connected, and the said several compressor (12). A plurality of electrical component boxes (81) each having an electrical component (81a) and a support frame (70) having a plurality of frame portions (70A, 70B, 70C, 70D) arranged in a row, In each pedestal part (70A, 70B, 70C, 70D), the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the electrical component box (81) for the system corresponding to each other are provided. It is characterized by being installed as one unit.

    In the first invention, the support frame (70) is configured by arranging a plurality of frame parts (70A, 70B, 70C, 70D) in a line. And the compressor (12) connected to a common refrigerant circuit (10), the air heat exchanger (50, 60), the receiver (15), and the electrical component box for systems corresponding to this compressor (12) (81) is installed on each pedestal (70A, 70B, 70C, 70D) as one unit.

    In this way, the relative positions of the corresponding compressor (12), air heat exchanger (50, 60), and receiver (15) are made similar among the plurality of gantry parts (70A, 70B, 70C, 70D). Or the same. Thereby, in each mount part (70A, 70B, 70C, 70D), refrigerant | coolant piping can be arrange | positioned similarly. As a result, in each pedestal part (70A, 70B, 70C, 70D), the refrigerant piping, the surrounding mounting structure, and the like can be shared, and the refrigeration apparatus can be simplified.

    Further, in the present invention, the relative positions of the compressor (12) and the electrical component box (81) for the system corresponding to the compressor (12) are made similar in the plurality of mount parts (70A, 70B, 70C, 70D). Or the same. As a result, in each pedestal (70A, 70B, 70C, 70D), the electrical wiring between the compressor (12) and the system electrical component box (81), the surrounding mounting structure, etc. can be shared, The apparatus can be simplified.

    According to a second invention, in the first invention, a water circuit (40) in which a water heat exchanger (35, 36) for exchanging heat between the refrigerant and water and a water pump (44) for conveying water are connected. And an operation electrical component box (82) including an operation portion (82a), and the plurality of mount portions (70A, 70B, 70C, 70D) include a first end mount portion (70A) and a second And an operation electrical component box (82) including an operation unit (82a) is installed on the first end support unit (70A), and the second end support unit is provided on the first end support unit (70A). The water pump (44) is installed in the section (70D).

    In the second aspect of the invention, the operation electrical component box (82) is installed on the first end frame (70A) and the water pump (44) is installed on the second end frame (70D). The distance between the electrical component box (82) and the water pump (44) can be increased. For this reason, even if water leaks around the water pump (44), this water can be prevented from reaching the electrical component box for operation (82).

    In a third aspect based on the second aspect, the plurality of pedestal portions (70A, 70B, 70C, 70D) are formed of the first end side pedestal portion (70A) and the second end side pedestal portion (70D). It includes at least one intermediate mount (70B, 70C) in between.

    In the third aspect of the invention, the support frame (70) is configured by the first end frame (70A), the intermediate frame (70B, 70C), and the second frame (70D) arranged in a line. Between the electrical component box for operation (82) installed on the first end side frame (70A) and the water pump (44) installed on the second end side frame (70D), there is an intermediate frame Since (70B, 70C) is arranged, the distance between the electrical component box for operation (82) and the water pump (44) can be increased. For this reason, even if water leaks around the water pump (44), this water can be reliably prevented from reaching the electrical component box for operation (82).

    Further, the electrical component box for operation (82) and the water pump (44) are installed on the most pedestal portion (70A, 70D) among the plurality of pedestal portions (70A, 70B, 70C, 70D). For this reason, access to the electrical component box for operation (82) and the water pump (44) is facilitated, and maintenance thereof can be easily performed.

    According to a fourth aspect of the present invention, in the second or third aspect of the invention, the second end-side gantry (70D) is directed from the first end-side gantry (70A) to the second end-side gantry (70D). In this order, the electrical component box for system (81), the compressor (12), and the water pump (44) are arranged.

    In 4th invention, a compressor (12) is arrange | positioned between the electrical component box for systems (81) and the water pump (44) in the 2nd end side mount part (70D). For this reason, the distance between the electrical component box for system (81) and the water pump (44) can be increased. As a result, even if water leaks around the water pump (44), this water can be prevented from reaching the system electrical component box (81).

    In a fifth aspect based on the third aspect, at least one of the intermediate frame portions (70B, 70C) is directed from the first end side frame portion (70A) toward the second end side frame portion (70D). The system electrical component box (81), the compressor (12), and the water heat exchanger (35, 36) are arranged in this order.

    In the fifth aspect of the invention, the compressor (12) is disposed between the system electrical component box (81) and the water heat exchanger (35, 36) in the intermediate mount (70B, 70C). For this reason, the distance between the electrical component box for system (81) and the water heat exchanger (35, 36) can be increased. As a result, even if water leaks around the water heat exchanger (35, 36), the water can be prevented from reaching the electrical component box for system (81).

    According to a sixth invention, in any one of the first to fifth inventions, the support frame (70) has at least one side surface along the arrangement direction of the frame parts (70A, 70B, 70C, 70D). A maintenance port (86) is formed, and in at least one of the plurality of mounts (70A, 70B, 70C, 70D), the compressor (12) is closer to the maintenance port (86) than the receiver (15). It is characterized by being arranged.

    In the sixth invention, since the compressor (12) is disposed closer to the maintenance port (86) than the receiver (15), the compressor is passed through the maintenance port (86) from the side surface in the width direction of the support base (70). The maintenance of (12) can be performed easily. Since the receiver (15) has a lower maintenance frequency than the compressor (12), even if the receiver (15) is arranged on the back side of the compressor (12), there is no major problem.

    According to a seventh invention, in the sixth invention, the electrical component box for system (81) is more maintained than the receiver (15) in at least one of the plurality of mount parts (70A, 70B, 70C, 70D). It is arranged near the mouth (86).

    In the seventh invention, since the electrical component box (81) for the system is disposed closer to the maintenance port (86) than the receiver (15), the maintenance port (86) is formed from the side surface in the width direction of the support frame (70). Through this, maintenance of the electrical component box (81) for the system can be easily performed. Since the receiver (15) has a lower maintenance frequency than the system electrical component box (81), even if the receiver (15) is arranged on the back side of the system electrical component box (81), there is no major problem.

    In an eighth aspect based on the sixth or seventh aspect, the compressor (12) is installed at the bottom of the plurality of mounts (70A, 70B, 70C, 70D) and the maintenance port (86 ) Is provided with a draw-out bottom plate (83) that can be drawn out.

    In the eighth invention, the compressor (12) can be pulled out to the outside of the maintenance port (86) by pulling the drawer bottom plate (83) toward the maintenance port (86).

According to a ninth invention, in any one of the first to eighth inventions, the one unit installed on each of the mount parts (70A, 70B, 70C, 70D) is connected to each of the refrigerant circuits (10). According to the ninth aspect of the present invention, the apparatus includes a refrigerant cooling unit (25) that is connected and cools the electric component (81a) of the corresponding electric component box for the system (81) with a refrigerant. Refrigerant cooling units (25) are installed in the sections (70A, 70B, 70C, 70D), respectively. Each refrigerant cooling unit (25) cools the electrical component (81a) of the corresponding system electrical component box (81) by the refrigerant flowing through the refrigerant circuit (10). The refrigerant cooling unit (25) is installed on the same base (70A, 70B, 70C, 70D) together with the corresponding compressor (12) and system electrical component box (81). For this reason, in each pedestal part (70A, 70B, 70C, 70D), the distance between the refrigerant cooling unit (25), the compressor (12), and the system electrical component box (81) is relatively short. The layout can be shared by each pedestal (70A, 70B, 70C, 70D). As a result, the refrigerant pipes around the refrigerant cooling unit (25) can be shortened, and the refrigerant pipes and their peripheral structures in the gantry portions (70A, 70B, 70C, 70D) can be shared.

    According to the first aspect of the present invention, each pedestal unit includes a compressor (12), an air heat exchanger (50, 60), a receiver (15), and a system electrical component box (81) corresponding to each other as an integral unit. Since it is installed at (70A, 70B, 70C, 70D), the refrigerant piping, the electrical wiring, the surrounding mounting structure, etc. can be made common among the plurality of mount parts (70A, 70B, 70C, 70D). As a result, it is possible to improve the assembly of the refrigeration apparatus and reduce the cost.

    In addition, by configuring the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the system electrical component box (81) as one unit in this way, a new refrigeration system is provided. You can add more units or omit units that are no longer needed.

    Moreover, even if a plurality of pedestals (70A, 70B, 70C, 70D) are arranged in a row, for example, the refrigerant pipe connecting the compressor (12), the receiver (15), and the air heat exchanger (50, 60) is not much. It won't be long. Therefore, the layout of the refrigerant piping can be configured simply.

    According to the second aspect of the invention, the distance between the electrical component box for operation (82) most important for the operation of the refrigeration apparatus and the water pump (44) can be increased, and water leakage from the water pump (44) can be prevented. The malfunction of the electrical component box for operation (82) caused by this can be avoided.

    In particular, according to the third aspect of the invention, the distance between the operation electrical component box (82) and the water pump (44) can be sufficiently increased, and the operation electrical component caused by water leakage of the water pump (44). The malfunction of the product box (82) can be avoided reliably. In addition, maintenance of the electrical component box for operation (82) and the water pump (44) is facilitated.

    According to the fourth aspect of the invention, the distance between the water pump (44) and the system electrical component box (81) can also be sufficiently increased, and the electrical system components for the system due to water leakage from the water pump (44). The malfunction of the box (81) can also be avoided. Furthermore, according to the fifth aspect of the invention, the distance between the electrical component box for the system (81) and the water heat exchanger (35, 36) can also be sufficiently separated, resulting from water leakage from the water pump (44). The malfunction of the electrical component box (81) for the system can also be avoided.

    According to the sixth aspect, maintenance of the compressor (12) can be easily performed through the maintenance port (86). According to the seventh aspect, maintenance of the electrical component box for system (81) can be easily performed through the maintenance port (86). According to the eighth aspect of the present invention, the compressor (12) can be easily maintained by pulling out the drawer bottom plate (83) even in a situation where the space for maintenance is relatively narrow.

    According to the ninth aspect, it is possible to simplify the refrigerant piping and the mounting structure around the refrigerant cooling unit (25) for cooling the electric component (81a) of the system electric component box (81).

FIG. 1 is an overall perspective view showing the front side and the right side of the chiller device. FIG. 2 is an overall perspective view showing the front side and the left side of the chiller device. FIG. 3 is a piping system diagram of the chiller device. FIG. 4 is a front view of the chiller device. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a schematic configuration diagram in which a part of the side of the first air heat exchanger is enlarged. FIG. 7 is a schematic configuration diagram enlarging a part of the side of the second air heat exchanger. FIG. 8 is a plan view showing the arrangement of main equipment inside the machine room. FIG. 9 is a front view in which a plurality of chiller devices are arranged on the left and right.

    Hereinafter, embodiments of the present invention will be described 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.

<< Embodiment of the Invention >>
The refrigeration apparatus of the present invention is a cold / hot water chiller apparatus (1) that cools and heats water using a refrigerant. As shown in FIGS. 1 and 2, the chiller device (1) is configured, for example, by arranging four heat source units (5A, 5B, 5C, 5D) in a line.

-Piping system of chiller device-
The piping system of the chiller device (1) will be described with reference to FIG. The chiller device (1) includes four refrigerant circuits (10), one water circuit (40), and two water heat exchangers (35, 40) connected to each refrigerant circuit (10) and the water circuit (40). 36). In each refrigerant circuit (10), a refrigerant is circulated to perform a vapor compression refrigeration cycle. Inflow water is supplied to the water circuit (40) from a predetermined water supply source. The effluent water that has been heated or cooled in the water circuit (40) is supplied to a target for temperature regulation. In addition, the quantity of a refrigerant circuit (10), a water heat exchanger (35, 36), and a water circuit (40) is a mere illustration, and another quantity may be sufficient as it.

<Refrigerant circuit>
Each refrigerant circuit (10) is configured by connecting a heat source circuit (11) and a utilization circuit (30). The four heat source circuits (11) correspond to the four heat source units (5A, 5B, 5C, 5D) one by one. Since the configurations of the heat source circuit (11) and the utilization circuit (30) are basically the same, FIG. 3 shows the detailed structure of the heat source circuit (11) of the first heat source unit (5A), and other heat source units. The detailed structure of the heat source circuit (11) (5B, 5C, 5D) is not shown.

[Heat source circuit]
The heat source circuit (11) is provided in each corresponding heat source unit (5A, 5B, 5C, 5D). The heat source circuit (11) includes a compressor (12), a first air heat exchanger (50), a second air heat exchanger (60), a first expansion valve (13), a second expansion valve (14), A receiver (15) and a four-way selector valve (16) are connected.

    The compressor (12) sucks and compresses the refrigerant, and then discharges the compressed refrigerant. The first air heat exchanger (50) and the second air heat exchanger (60) are fin-and-tube heat exchangers. In each air heat exchanger (50, 60), the air conveyed by the fan (17) and the refrigerant exchange heat. Each of the first expansion valve (13) and the second expansion valve (14) is an electric valve having a variable opening degree. The first air heat exchanger (50) and the second air heat exchanger (60) adjacent to each other constitute a heat exchanging section (48) for exchanging heat between the refrigerant and the air.

    The first air heat exchanger (61) and the first expansion valve (13) are connected to the first parallel circuit (18), and the second air heat exchanger (60) and the second expansion valve (14) Two parallel circuits (19) are connected. The first parallel circuit (18) and the second parallel circuit (19) constitute a refrigerant parallel circuit that is in a parallel relationship with each other.

    The receiver (15) is a vertically long hollow sealed container and constitutes a refrigerant regulator. Excess refrigerant is stored in the receiver (15).

    The four-way selector valve (16) has first to fourth ports. In the four-way switching valve (16), the first port is connected to the discharge part of the compressor (12), the second port is connected to the suction part of the compressor (12), and the third port is connected to each air heat exchanger ( 50, 60) and the fourth port is connected to the gas line (31) of the utilization circuit (30). The four-way switching valve (16) includes a state in which the first port and the third port communicate with each other, and a state in which the second port and the fourth port communicate with each other (first state indicated by a solid line in FIG. 3), The state is switched to the state in which the 4 ports communicate and the second port and the third port communicate (second state indicated by a broken line in FIG. 3).

    A supercooling unit (20) and a refrigerant cooling unit (25) are connected to the heat source circuit (11).

    The supercooling unit (20) includes a supercooling heat exchanger (21), an injection circuit (22), and a first motor operated valve (23). The supercooling heat exchanger (21) has a first channel (21a) communicating with the receiver (15) and a second channel (21b) connected to the injection circuit (22). The injection circuit (22) has an inflow end connected between the receiver (15) and the supercooling unit (20), and an outflow end communicating with the suction portion of the compressor (12). The first motor operated valve (23) is connected to the upstream side of the second flow path (21b) in the injection circuit (22). The first motor operated valve (23) is an electronic expansion valve having a variable opening. In the supercooling heat exchanger (21), the liquid refrigerant flowing through the first flow path (21a) and the refrigerant flowing through the second flow path (21b) exchange heat. Thereby, in a supercooling heat exchanger (21), the liquid refrigerant which flows through the 1st channel (21a) is cooled.

    The refrigerant cooling unit (25) includes a cooling circuit (26) and a heat transfer member (27). One end of the cooling circuit (26) branches into two hands. One of the two branches of the cooling circuit (26) is connected between the first air heat exchanger (50) and the first expansion valve (13) in the first parallel circuit (18). The other of the two branches of the cooling circuit (26) is connected between the second air heat exchanger (60) and the second expansion valve (14) in the second parallel circuit (19). The other end of the cooling circuit (26) is connected between the receiver (15) and the two expansion valves (13, 14). For example, a second motor-operated valve (28), which is an electronic expansion valve, is connected to the cooling circuit (26).

    The heat transfer member (27) is made of a material having high thermal conductivity such as flat aluminum. A heat transfer tube constituting the cooling circuit (26) is in thermal contact with one surface of the heat transfer member (27). The electrical component (81a) (for example, an inverter board having a switching element) is in thermal contact with the other surface of the heat transfer member (27). Thereby, the refrigerant of the refrigerant cooling unit (25) is used for cooling the electrical component (81a).

    Various sensors are provided in the heat source circuit (11). Specifically, the first refrigerant temperature sensor (29a) is connected to the gas end of the first air heat exchanger (50). A second refrigerant temperature sensor (29b) is connected to the gas end of the second air heat exchanger (60). A suction pressure sensor (29c) is connected to the suction portion of the compressor (12). A 1st refrigerant | coolant temperature sensor (29a) detects the temperature of the refrigerant | coolant which flowed out the 1st air heat exchanger (50) used as an evaporator. A 2nd refrigerant | coolant temperature sensor (29b) detects the temperature of the refrigerant | coolant which flowed out the 2nd air heat exchanger (60) used as an evaporator. The suction pressure sensor (29c) detects the pressure of the suction refrigerant (low pressure refrigerant) sucked into the compressor (12).

[Use circuit]
The utilization circuit (30) is connected between each heat source unit (5A, 5B, 5C, 5D) and the water heat exchanger (35, 36). Specifically, the utilization circuit (30) corresponding to the first heat source unit (5A) is connected to the first refrigerant side flow path (35a) of the first water heat exchanger (35). The utilization circuit (30) corresponding to the second heat source unit (5B) is connected to the second refrigerant side flow path (35b) of the first water heat exchanger (35). The utilization circuit (30) corresponding to the third heat source unit (5C) is connected to the third refrigerant side flow path (36a) of the second water heat exchanger (36). The utilization circuit (30) corresponding to the fourth heat source unit (5D) is connected to the fourth refrigerant side flow path (36b) of the second water heat exchanger (36).

    Each utilization circuit (30) has a gas line (31) and a liquid line (32), respectively. The gas line (31) is connected between the gas end of the water heat exchanger (35, 36) and the fourth port of the four-way switching valve (16). The liquid line (32) is connected between the liquid end of the water heat exchanger (35, 36) and the supercooling heat exchanger (21). For example, a third expansion valve (33), which is an electronic expansion valve, is connected to the liquid line (32).

<Water circuit>
The water circuit (40) has an inflow pipe (41), a relay pipe (42), and an outflow pipe (43) in order from the upstream side toward the downstream side. The inflow pipe (41) is connected to the inflow end of the first water flow path (35c) of the first water heat exchanger (35). The relay pipe (42) is connected between the first water flow path (35c) of the first water heat exchanger (35) and the second water flow path (36c) of the second water heat exchanger (36). The outflow pipe (43) is connected to the outflow end of the second water flow path (36c) of the second water heat exchanger (36). Connected to the inflow pipe (41) is a water pump (44) for transporting water from the water circuit (40).

<Control part>
The chiller device (1) includes a control unit (81b) that controls each device of the refrigerant circuit (10). The control unit (81b) includes, for example, a microcomputer and a memory, and controls the opening degrees of the first expansion valve (13) and the second expansion valve (14). Specifically, in the heating operation described later, the control unit (81b) controls the first expansion valve (13) so that the index indicating the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) approaches the target value. ) Is controlled. In addition, in the heating operation, the controller (81b) opens the opening of the second expansion valve (14) so that the index indicating the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) approaches the target value. To control.

-Operation of chiller device-
The basic operation of the chiller device (1) will be described with reference to FIG. In the chiller device (1), a cooling operation for cooling water and a heating operation for heating water are switched.

<Cooling operation>
In the cooling operation, the four-way switching valve (16) is in the first state, each air heat exchanger (50, 60) becomes a radiator or condenser, and the water heat exchanger (35, 36) becomes an evaporator. Is done. Specifically, the refrigerant compressed by the compressor (12) is divided into the first air heat exchanger (50) and the second air heat exchanger (60). In each air heat exchanger (50, 60), the refrigerant dissipates heat to the outdoor air and condenses. The refrigerant radiated by the first air heat exchanger (50) passes through the fully opened first expansion valve (13). The refrigerant radiated by the second air heat exchanger (60) passes through the fully opened second expansion valve (14). The refrigerant merged at the receiver (15) passes through the supercooling heat exchanger (21), is decompressed by the third expansion valve (33), and then flows through the water heat exchanger (35, 36). In the water heat exchanger (35, 36), the refrigerant absorbs heat from the water in the water circuit (40) and evaporates, and the water is cooled. The refrigerant evaporated in the water heat exchanger (35, 36) is sucked into the compressor (12) and compressed.

<Heating operation>
In the heating operation, the four-way switching valve (16) is in the second state, the water heat exchanger (35, 36) is a radiator or condenser, and each air heat exchanger (50, 60) is an evaporator. Is done. Specifically, the refrigerant compressed by the compressor (12) flows through the water heat exchanger (35, 36). In the water heat exchanger (35, 36), the refrigerant dissipates heat to the water in the water circuit (40) and condenses, and the water is heated. The refrigerant condensed in the water heat exchanger (35, 36) sequentially passes through the fully opened third expansion valve (33), the supercooling heat exchanger (21), and the receiver (15), and the first expansion valve ( 13) and the second expansion valve (14). The refrigerant decompressed by the first expansion valve (13) evaporates in the first air heat exchanger (50). The refrigerant decompressed by the second expansion valve (14) evaporates in the second air heat exchanger (60). The refrigerant evaporated in each air heat exchanger (50, 60) joins and is then sucked into the compressor (12) and compressed.

    In the heating operation, the openings of the first expansion valve (13) and the second expansion valve (14) are individually adjusted by the control unit (81b). Specifically, the opening degree of the first expansion valve (13) is adjusted so that the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) becomes a predetermined value. The opening degree of the second expansion valve (14) is adjusted so that the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) becomes a predetermined value. Here, the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) is, for example, the temperature of the refrigerant detected by the first refrigerant temperature sensor (29a) and the pressure of the refrigerant detected by the suction pressure sensor (29c). It is calculated | required from the difference with the saturation temperature equivalent to. Similarly, the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) is, for example, the temperature of the refrigerant detected by the second refrigerant temperature sensor (29b) and the pressure of the refrigerant detected by the suction pressure sensor (29c). It is calculated | required from the difference with the saturation temperature equivalent to. Instead of directly calculating the superheat degree in this way, the temperature and pressure of the refrigerant can be used as they are as an index indicating the superheat degree.

    In this way, in the heating operation, by controlling the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) and the second air heat exchanger (60) individually, each air heat exchanger (50, In 60), the refrigerant can be reliably evaporated to a predetermined degree of superheat. That is, it is possible to reliably prevent the refrigerant from flowing out in a wet state in each air heat exchanger (50, 60) or from flowing out in an excessively dry state. Thereby, the evaporation capability of each air heat exchanger (50, 60) can be sufficiently secured. Further, it is possible to reliably avoid the liquid refrigerant from being sucked into the compressor (12).

-Structure of chiller device-
Next, the detailed structure of the chiller device (1) will be described with reference to FIGS. In the following description, the description indicating the directions of “front”, “back”, “right”, “left”, “up” and “down” is based on the direction shown in FIG. 1 in principle. .

<Overall schematic configuration>
In the chiller device (1), four heat source units (5A, 5B, 5C, 5D) are arranged in the front-rear direction. The four heat source units (5A, 5B, 5C, 5D) are arranged in order from the front side to the rear side, the first heat source unit (5A), the second heat source unit (5B), the third heat source unit (5C), and the Consists of 4 heat source units (5D).

    Each heat source unit (5A, 5B, 5C, 5D) has one upper casing (46) and one pedestal (70A, 70B, 70C, 70D). These pedestal portions (70A, 70B, 70C, 70D) include a first pedestal portion (70A) corresponding to the first heat source unit (5A) and a second pedestal portion (70B corresponding to the second heat source unit (5B)). ), A third frame part (70C) corresponding to the third heat source unit (5C), and a fourth frame part (70D) corresponding to the fourth heat source unit (5D). These pedestal parts (70A, 70B, 70C, 70D) are connected in the front-rear direction to constitute an integral support pedestal (70). The first pedestal portion (70A) constitutes a first side end pedestal portion disposed on the foremost side. The fourth pedestal portion (70D) constitutes a second side end pedestal portion (70A, 70B, 70C, 70D) arranged on the rearmost side. The second frame part (70B) and the third frame part (70C) respectively constitute intermediate frame parts arranged between the first frame part (70A) and the fourth frame part (70D). The number of these pedestal portions (70A, 70B, 70C, 70D) is merely an example, but the number of pedestal portions is preferably two or more, more preferably three or more, and may be five or more.

    Between each upper casing (46) and each frame part (70A, 70B, 70C, 70D), the 1st air heat exchanger (50) and the 2nd air heat exchanger which comprise a heat exchange part (48) (60) and intermediate frame portions (65A, 65B, 65C, 65D) covering the second air heat exchanger (60), respectively.

<Upper casing>
The upper casing (46) is provided at the upper end of the heat source unit (5A, 5B, 5C, 5D). Each upper casing (46) is formed in a flat hollow rectangular box shape. Each fan (17) is accommodated in the upper casing (46) (see FIG. 4). A circular air outlet (46a) is formed on the upper side of the upper casing (46) (see FIGS. 1 and 2). When the fan (17) is activated, the air outside the two air heat exchangers (50, 60) flows into the inside of the two air heat exchangers (50, 60). This air flows upward in the two air heat exchangers (50, 60), and is blown upward from the air outlet (46a).

<First air heat exchanger>
The first air heat exchanger (50) is provided corresponding to each heat source unit (5A, 5B, 5C, 5D) or each gantry (70A, 70B, 70C, 70D). Each first air heat exchanger (50) has first to third side portions (51, 52, 53) through which air passes. The first to third side portions (51, 52, 53) constitute a ventilation portion through which air passes.

    The first side surface portion (51) and the second side surface portion (52) are a pair of side surface portions facing each other. The first side surface portion (51) constitutes the front side surface of the first air heat exchanger (50), and the second side surface portion (52) constitutes the rear side surface of the first air heat exchanger (50). The third side surface portion (53) is a central side surface portion formed continuously between the first side surface portion (51) and the second side surface portion (52), and the first air heat exchanger (50). Of the left side of The four first air heat exchangers (50) are arranged adjacent to each other such that the third side surface portion (53) is continuous in the horizontal direction (front-rear direction).

    As shown in FIG. 5, the first air heat exchanger (50) is configured such that the side surface portions (51, 52, 53) are arranged in a substantially U shape in a plan view. An open surface (54) is formed on a side surface of the first air heat exchanger (50) where each side surface portion (51, 52, 53) is not present. The first air heat exchanger (50) is a vertical installation type in which the side surfaces (51, 52, 53) are vertical. No member or the like is provided around each side surface portion (51, 52, 53) of the first air heat exchanger (50). Therefore, when the fan (17) is activated, the air around the first air heat exchanger (50) passes through the side surfaces (51, 52, 53), respectively, and the first air heat exchanger (50) Flows into the interior.

    In the first air heat exchanger (50), the first side surface portion (51) and the second side surface portion (52) are arranged in a substantially C shape in plan view. That is, the first side surface portion (51) and the second side surface portion (52) are arranged so as to expand toward each side end portion so that the distance between them increases. In other words, the first side surface portion (51) and the second side surface portion (52) are inclined outward (front-rear direction) so as to form an obtuse angle with the third side surface portion (53). That is, as shown in FIG. 5, in the first air heat exchanger (50), a virtual plane P1 along the first side surface portion (51) and a virtual plane P3 along the third side surface portion (53) are provided. The formed angle θ1 is greater than 90 degrees. In the first air heat exchanger (50), the angle θ2 formed by the virtual plane P2 along the second side surface portion (52) and the virtual plane P3 along the third side surface portion (53) is greater than 90 degrees. large.

    As shown in FIG. 5, between the pair of first air heat exchangers (50) adjacent to each other in the front and rear directions, a circulation space (55) through which air can flow is formed. The distribution space (55) becomes wider as it approaches the third side surface portion (53) in plan view. By thus forming the opening side of the circulation space (55) to be wide, air can easily flow into the circulation space (55).

<Second air heat exchanger>
As shown in FIG.4 and FIG.5, the 2nd air heat exchanger (60) is arrange | positioned so as to oppose the open surface (54) of the right side of a 1st air heat exchanger (50). A 2nd air heat exchanger (60) is formed in a substantially flat plate shape as the whole external shape. A slope portion (61) formed in a substantially flat surface and inclined in the left-right direction is formed in the entire area of the second air heat exchanger (60). The 2nd air heat exchanger (60) thru / or slope part (61) incline so that it may leave the open surface (54) of the 1st air heat exchanger (50) toward these upper ends.

    The height position of the upper end of the second air heat exchanger (60) is substantially equal to the height position of the upper end of the first air heat exchanger (50). Further, the height position of the lower end of the second air heat exchanger (60) is substantially equal to the height position of the lower end of the first air heat exchanger (50). The second air heat exchanger (60) is disposed so as to cover the entire area of the open surface (54) of the first air heat exchanger (50).

<Number of rows of refrigerant flow paths (C) of the first air heat exchanger (50) and the second air heat exchanger (60)>
As shown in FIG. 6, in the first air heat exchanger (50), the number of rows (number of passes) of the refrigerant flow paths (C) in the air passage direction (the width direction of the first fin (56)) is three. It is. On the other hand, as shown in FIG. 7, in the second air heat exchanger (60), the number of the refrigerant flow paths (C) in the air passage direction (the width direction of the second fin (62)) (the number of passes). ) Is four columns. That is, the number of the refrigerant flow paths (C) in the second air heat exchanger (60) is larger than the number of the refrigerant flow paths (C) in the first air heat exchanger (50). Moreover, in this embodiment, the width | variety of the 1st fin (56) of a 1st air heat exchanger (50) and the width | variety of the 2nd fin (62) of a 2nd air heat exchanger (60) are substantially equal.

    As shown in FIG. 4, the second air heat exchanger (60) is disposed obliquely so that the outflow surface faces the fan (17) side. Therefore, the outflow surface of the second air heat exchanger (60) according to the embodiment is closer to the fan (17) than the case where the second air heat exchanger (60) is placed vertically, and the air Is easier to flow smoothly. That is, the flow resistance between the second air heat exchanger (60) and the fan (17) can be reduced by arranging the second air heat exchanger (60) obliquely. Therefore, the number of rows of the refrigerant flow paths (C) of the second air heat exchanger (60) is made larger than the number of rows of the refrigerant flow paths (C) of the first air heat exchanger (50), The heat transfer area of the whole 2nd air heat exchanger (60) can be expanded, ensuring sufficient ventilation of 2 air heat exchanger (60).

   Note that the number of rows of the refrigerant flow paths (C) of the second air heat exchanger (60) is the same as the number of rows of the refrigerant flow paths (C) of the first air heat exchanger (50) (for example, three rows). It is good.

<Intermediate frame>
As shown in FIG. 5 and the like, the four intermediate frame portions (65A, 65B, 65C, 65D) include a first intermediate frame portion (65A) and a second heat source unit (5B) corresponding to the first heat source unit (5A). The second intermediate frame portion (65B) corresponding to the second heat source unit (5D), the third intermediate frame portion (65C) corresponding to the second heat source unit (5D), the second intermediate frame portion (65D) corresponding to the third heat source unit (5C). It consists of. The intermediate frame portions (65A, 65B, 65C, 65D) are arranged so as to cover the second air heat exchanger (60). The four intermediate frame portions (65A, 65B, 65C, 65D) each have a frame plate (66) that is inclined along the second air heat exchanger (60). The frame plate (66) is formed in a frame shape that covers the second air heat exchanger (60) from the outside, and an air ventilation opening (66a) is formed therein (see FIG. 1). That is, the slope part (61) of the second air heat exchanger (60) is exposed to the outside through the ventilation opening (66a) of the frame plate (66).

    As shown in FIG. 1, FIG. 5, etc., a first shielding plate (67) is formed on the front side of the first intermediate frame portion (65A). The first shielding plate (67) is located near the side end portion of the first side surface portion (51) of the first air heat exchanger (50) from the front end of the frame plate (66) of the first intermediate frame portion (65A). Formed over. Thus, the first shielding plate (67) prevents air from passing between the first side surface portion (51) of the first air heat exchanger (50) and the second air heat exchanger (60). ing. The first shielding plate (67) is formed in an inverted trapezoidal shape or a right triangle shape so that the widths on the left and right sides become narrower downward.

    As shown in FIG. 5, a second shielding plate (68) having substantially the same shape as the first shielding plate (67) is formed on the rear side of the fourth intermediate frame portion (65D). The second shielding plate (68) is near the side end of the second side surface (52) of the first air heat exchanger (50) from the rear end of the frame plate (66) of the fourth intermediate frame (65D). It is formed over. Thus, the second shielding plate (68) prevents air from passing between the second side surface portion (52) of the first air heat exchanger (50) and the second air heat exchanger (60). ing. The second shielding plate (68) is formed in an inverted trapezoidal shape or a right triangle shape so that the left and right widths become narrower downward.

    Between the adjacent second air heat exchangers (60), an intermediate shielding plate (69) having substantially the same shape as the first shielding plate (67) and the second shielding plate (68) is provided. That is, the intermediate shielding plate (69) is configured in a position and a shape that form substantially the same projection plane as the first shielding plate (67) and the second shielding plate (68) in front view. The right ends of the plurality (three in this example) of the intermediate shielding plates (69) are fixed to the side ends of the adjacent frame plates (66). The left end of each intermediate shielding plate (69) extends to the vicinity of the side end portions of the pair of side surface portions (51, 52) of the adjacent first air heat exchanger (50). Between the adjacent heat source units (5A, 5B, 5C, 5D), the intermediate shielding plate (69) allows the air inside one of the heat source units (5A, 5B, 5C, 5D) to move to the other heat source unit (5A, 5A, 5D). 5B, 5C, 5D) is prevented from drifting.

<Supporting stand>
The support frame (70) is formed in a substantially rectangular parallelepiped shape in the front-rear direction. The support frame (70) includes first to second horizontal frames (71a, 71b), first to fourth vertical frames (72a, 72b, 72c, 72d), and first to sixth intermediate frames (73a, 73b). 73c, 73d, 73e, 73f).

    The first horizontal frame (71a) is disposed at the right end of the support frame (70), and the second horizontal frame (71b) is disposed at the left end of the support frame (70). The first horizontal frame (71a) and the second horizontal frame (71b) are formed in a bar shape extending in the front-rear direction so as to be parallel to each other.

    The first vertical frame (72a) is fixed to the front end of the first horizontal frame (71a), and the second vertical frame (72b) is fixed to the rear end of the first horizontal frame (71a). The third vertical frame (72c) is fixed to the front end of the second horizontal frame (71b), and the fourth vertical frame (72d) is fixed to the rear end of the second horizontal frame (71b).

    The first to third intermediate frames (73a, 73b, 73c) are fixed to the intermediate part of the first horizontal frame (71a) and arranged in the front-rear direction. The fourth to sixth intermediate frames (73d, 73e, 73f) are fixed to the intermediate part of the second horizontal frame (71b) and arranged in the front-rear direction. The first to sixth intermediate frames (73f) are formed in a vertically long bar shape extending upward from the intermediate portion of each horizontal frame (71a, 71b), and are arranged in parallel to each other.

    One base part (74) is provided at the upper end of the support frame (70). The base portion (74) is supported by the first to fourth vertical frames (72d) and the first to sixth intermediate frames (73f). The base part (74) is formed in a horizontally long plate shape or a rectangular parallelepiped shape in the front-rear direction, and extends in parallel with the horizontal frames (71a, 71b). Two air heat exchangers (50, 60) (heat exchange part (48)) and intermediate frame parts (65A, 65B, 65C, 65D) are installed on the upper surface of the base part (74).

    A front panel (75) is provided in a vertical state on the front surface of the support frame (70). The front panel (75) is detachably attached to the first vertical frame (72a) and the third vertical frame (72c). A rear panel (76) is provided on the rear surface of the support frame (70) in a vertical state. The rear panel (76) is detachably attached to the second vertical frame (72b) and the fourth vertical frame (72d).

    A first frame side plate (77) is formed on the right side of the support frame (70). The first gantry side plate (77) is located below the open surface (54) of the first air heat exchanger (50). The first gantry side plate (77) includes vertical first to fourth side panels (77a, 77b, 77c, 77d). The first side panel (77a) is detachably attached to the first vertical frame (72a) and the first intermediate frame (73a). The second side panel (77b) is detachably attached to the first intermediate frame (73a) and the second intermediate frame (73b). The third side panel (77c) is detachably attached to the second intermediate frame (73b) and the third intermediate frame (73c). The fourth side panel (77d) is detachably attached to the third intermediate frame (73c) and the second vertical frame (72b).

    On the left side of the support frame (70), a second frame side plate (78) is formed. The second gantry side plate (78) is located below the first air heat exchanger (50). The second gantry side plate (78) includes vertical fifth to eighth side panels (78a, 78b, 78c, 78d). The fifth side panel (78a) is detachably attached to the third vertical frame (72c) and the fourth intermediate frame (73d). The sixth side panel (78b) is detachably attached to the fourth intermediate frame (73d) and the fifth intermediate frame (73e). The seventh side panel (78c) is detachably attached to the fifth intermediate frame (73e) and the sixth intermediate frame (73f). The eighth side panel (78d) is detachably attached to the sixth intermediate frame (73f) and the fourth vertical frame (72d).

    The first to fourth machine chambers (S1, S2, S3, S4) are defined between the first frame side plate (77) and the second frame side plate (78) of the support frame (70). The first to fourth machine chambers (S1, S2, S3, S4) are each configured as a rectangular parallelepiped space, and are arranged in a line in the front-rear direction. Specifically, the first machine room (S1) is defined between the first side panel (77a) and the fifth side panel (78a), and the second side panel (77b) and the sixth side panel (78b) A second machine room (S2) is defined between them. A third machine room (S3) is defined between the third side panel (77c) and the seventh side panel (78c), and a fourth machine is provided between the fourth side panel (77d) and the eighth side panel (78d). Chamber (S4) is partitioned.

    In the support frame (70), the parts for dividing the first machine room (S1) constitute the first frame part (70A), and the parts for dividing the second machine room (S2) are the second frame part. (70B), the part for partitioning the third machine room (S3) constitutes the third frame part (70C), and the part for partitioning the fourth machine room (S4) is the fourth frame part (70D) is configured.

    In the present embodiment, for example, the first to second horizontal frames (71a, 71b) and the base part (74) are provided in the machine rooms (S1, S2, S3) of the respective base parts (70A, 70B, 70C, 70D). , S4) are shared as parts. However, the first to second horizontal frames (71a, 71b) and the base part (74) are compatible with each machine room (S1, S2, S3, S4) to each base part (70A, 70B, 70C, 70D). You may divide | segment for every part to perform. If it does in this way, each frame part (70A, 70B, 70C, 70D) can be moved independently (for example, lifted) with each heat source unit (5A, 5B, 5C, 5D).

<leg>
As shown in FIG. 1, FIG. 2, FIG. 4 and the like, two legs (79) are provided at the lower end of the above-described support frame (70). One leg (79) is fixed to the lower end of the front panel (75), and the other leg (79) is fixed to the lower end of the rear panel (76). Each leg (79) extends horizontally from the lower end of the first gantry side plate (77) toward the right side. That is, the protruding part of each leg part (79) is located below the second air heat exchanger (60) or the intermediate frame part (65A, 65B, 65C, 65D). The number of legs (79) is not limited to this, and may be three or more.

    As shown in FIG. 4, the entire outer shape of the chiller device (1) is formed in a substantially inverted L shape when viewed from the front. That is, in the chiller device (1), the second air heat exchanger (60) and its surrounding parts project outward (right side) from the second gantry side plate (78). For this reason, there exists a possibility that a chiller apparatus (1) may fall to the right side. On the other hand, since the leg portion (79) extends from the lower end of the support frame (70) in the direction in which the second air heat exchanger (60) projects, such a fall can be reliably avoided.

<Layout of main equipment in the machine room>
Next, the layout of the main equipment inside the machine room (S1, S2, S3, S4) will be described with reference to FIG. In addition, in FIG. 8, illustration of the refrigerant | coolant piping for comprising a refrigerant circuit (10) is abbreviate | omitted.

[Outline of layout]
In each machine room (S1, S2, S3, S4), one compressor (12), one receiver (15), and one electrical component box (81) are installed. Each system electrical component box (81) is provided with electrical components (81a) such as an inverter board for supplying power to the corresponding compressor (12). Each machine room (S1, S2, S3, S4) is provided with the above-described refrigerant cooling unit (25) for cooling each electrical component (81a) of each system electrical component box (81). (Not shown in FIG. 8). Each system electrical component box (81) is provided with a controller (81b) for controlling the first expansion valve (13) and the second expansion valve (14) of the corresponding refrigerant circuit (10).

    An electrical component box for operation (82) is installed in the first machine room (S1). The operation electrical component box (82) is provided with an operation unit (82a) for operating the refrigeration apparatus. A first water heat exchanger (35) is installed in the second machine room (S2). A second water heat exchanger (36) is installed in the third machine room (S3). A water pump (44) is installed in the fourth machine room (S4).

[Drawer bottom plate]
In each machine room (S1, S2, S3, S4), one drawer bottom plate (83) is installed. The drawer bottom plate (83) is formed in a slightly horizontally long rectangular shape on the front and rear, and constitutes the bottom of the corresponding machine room (S1, S2, S3, S4). The drawer bottom plate (83) is slidably attached to the support frame (70) toward a maintenance space (85) formed on the right side of the support frame (70).

[First machine room]
In the first machine room (S1), a compressor (12), a receiver (15), a system electrical component box (81), and an operation electrical component box (82) are installed. The compressor (12) is disposed at the center in the front-rear direction of the first machine room (S1) and closer to the first gantry side plate (77) (close to the maintenance space (85)). In the first machine room (S1), the electrical component box (82) for operation is arranged on the front side (close to the front panel (75)) of the compressor (12). In the first machine room (S1), the receiver (15) is arranged behind the compressor (12) (near the rear panel (76) or the fourth machine room (S4)). In the first machine room (S1), a system electrical component box (81) is arranged on the left side of the receiver (15).

[Second machine room]
In the second machine room (S2), a compressor (12), a receiver (15), a system electrical component box (81), and a first water heat exchanger (35) are installed. In the second machine room (S2), near the first pedestal side plate (77), the electrical component box for system (81), the compressor (12), and the first water heat exchanger are arranged in order from the front side to the rear side. A vessel (35) is arranged. That is, in the second machine room (S2), the compressor (12) is disposed between the system electrical component box (81) and the first water heat exchanger (35). Each part of the relay pipe (42) and the outflow pipe (43) is arranged in the second machine room (S2). The relay pipe (42) and the outflow pipe (43) are disposed near the second gantry side plate (78) of the second machine room (S2).

[Third machine room]
In the third machine room (S3), a compressor (12), a receiver (15), a system electrical component box (81), and a second water heat exchanger (36) are installed. In the third machine room (S3), close to the first pedestal side plate (77), the electrical component box for system (81), the compressor (12), and the second water heat exchanger are arranged in order from the front side to the rear side. A vessel (36) is arranged. That is, in the third machine room (S3), the compressor (12) is disposed between the system electrical component box (81) and the second water heat exchanger (36). In the third machine chamber (S3), a part of each of the inflow pipe (41), the relay pipe (42), and the outflow pipe (43) is arranged. The inflow pipe (41), the relay pipe (42), and the outflow pipe (43) are disposed near the second gantry side plate (78) of the third machine room (S3). In the third machine room (S3), the receiver (15) is disposed between the relay pipe (42) and the outflow pipe (43) and the electrical component box for system (81).

[Fourth machine room]
In the fourth machine room (S4), a compressor (12), a receiver (15), a system electrical component box (81), and a water pump (44) are installed. In the fourth machine room (S4), close to the first pedestal side plate (77), in order from the front side to the rear side, the system electrical component box (81), the compressor (12), and the water pump (44) Is placed. That is, in the fourth machine room (S4), the compressor (12) is disposed between the system electrical component box (81) and the water pump (44). A part of each of the inflow pipe (41) and the outflow pipe (43) is arranged in the fourth machine chamber (S4). The inflow pipe (41) and the outflow pipe (43) are disposed near the second gantry side plate (78) of the fourth machine room (S4). In the fourth machine room (S4), the receiver (15) is disposed between the inflow pipe (41) and the outflow pipe (43) and the electrical component box for system (81). The inflow portion of the inflow pipe (41) extends from the fourth machine chamber (S4) through the second frame side surface (fourth side panel (77d)) to the outside. The outflow portion of the outflow pipe (43) extends from the fourth machine chamber (S4) through the rear panel (76) to the outside.

<Maintenance structure>
As shown in FIG. 8, in the chiller device (1), the front panel (75) and the first gantry side plate (77) constitute main maintenance surfaces. When the front panel (75) is removed, the operation electrical component box (82) is exposed to the outside through the front maintenance port (86). Thereby, the operation electrical component box (82) can be easily accessed. When the first to fourth side panels (77a, 77b, 77c, 77d) constituting the first gantry side plate (77) are removed, the compressor (12) of each machine room (S1, S2, S3, S4) The system electrical component box (81) in the second to fourth machine rooms (S4) is exposed to the outside through the side maintenance port (87). Thereby, the compressor (12) of each machine room (S1, S2, S3, S4) and the system electrical equipment box (81) of the second to fourth machine rooms (S4) can be easily accessed. The system electrical component box (81) in the first machine room (S1) can be accessed by removing the fifth side panel (78a) (see FIG. 2).

    Moreover, each drawer bottom plate (83) can be pulled out to the maintenance space (85) side by removing the first to fourth side panels (77a, 77b, 77c, 77d) (see FIG. 1). Thereby, work can be performed after the compressor (12) and other devices are pulled out to the maintenance space (85).

    As shown in FIG. 9, a plurality of chiller devices (1) may be installed in the left-right direction. In this case, of two adjacent chiller devices (1), the first gantry side plate (77) of one chiller device (1) and the second gantry side plate (78) of the other chiller device (1) face each other. And place it. In this case, a relatively wide maintenance space (85) can be secured below the second air heat exchanger (60) between the adjacent support frames (70). Therefore, it is possible to perform maintenance on each device while narrowing the interval between the plurality of chiller devices (1).

-Effect of the embodiment-
In the said embodiment, in each mount part (70A, 70B, 70C, 70D), the compressor (12) connected to the same refrigerant circuit (10), two air heat exchangers (50, 60), and a receiver ( 15) and the electrical component box (81) for the system corresponding to the compressor (12) are collectively arranged as one unit. In addition, in each pedestal part (70A, 70B, 70C, 70D), the supercooling unit (20) and the refrigerant cooling unit (25) connected to the same refrigerant circuit (10) are collectively arranged as one unit. The For this reason, the refrigerant pipes, the electrical wiring, and the surrounding mounting structure are similar or the same between the four mounts (70A, 70B, 70C, 70D). Can do. As a result, the apparatus structure of the refrigeration apparatus (1) can be simplified and the cost can be reduced.

    In the above embodiment, the second gantry is placed between the first gantry (70A) where the electrical component box for operation (82) is installed and the fourth gantry (70D) where the water pump (44) is installed. Since the part (70B) and the third pedestal part (70C) are arranged, the distance between the electrical component box for operation (82) and the water pump (44) can be increased. In addition, since the compressor (12) is arranged between the system electrical component box (81) and the water pump (44) in the fourth mount (70D), the system electrical component box (81) The distance from the water pump (44) can be increased. Moreover, in the 2nd mount part (70B) and the 3rd mount part (70C), the compressor (12) is arrange | positioned between the electrical component box for systems (81) and the water heat exchanger (35, 36). Therefore, the distance between the electrical component box for system (81) and the water heat exchanger (35, 36) can be increased. As described above, in this embodiment, the malfunction of the electrical component box for operation (82) and the electrical component box for system (81) due to water leakage of the water heat exchanger (35, 36) and the water pump (44). These devices can be placed inside the support frame (70) while preventing them from occurring.

    In the second frame part (70B), the third frame part (70C), and the fourth frame part (70D), the compressor (12) is opened through the side maintenance port (87) by opening the first frame side plate (77). ) And the electrical component box (81) for the system can be exposed to the outside. Therefore, maintenance of the compressor (12) and the system electrical component box (81) can be easily performed. Further, since a maintenance space (85) is secured outside the side surface maintenance port (87), access to the compressor (12) and the system electrical component box (81) is also easy. In addition, by pulling out the drawer bottom plate (83) to the maintenance space (85) through the side maintenance port (87), maintenance of the compressor (12) and other devices can be performed more easily.

    In the first pedestal portion (70A), the operation electrical component box (82) can be easily accessed by opening the front panel (75). This is the same when a plurality of refrigeration apparatuses (1) are arranged side by side as shown in FIG.

<< Other Embodiments >>
The support frame (70) may be configured by only two frame parts (70A, 70D). In this case, the electrical component box for operation (82) is installed on one gantry (70A) (first end cradle), and the water pump (70D) (second end cradle) is connected to the water pump ( 44) is recommended. Also in this case, the distance between the electrical component box for operation (82) and the water pump (44) can be increased.

    As described above, the present invention is useful for a refrigeration apparatus.

1 Refrigeration equipment
10 Refrigerant circuit
13 First expansion valve
14 Second expansion valve
17 fans
48 Heat exchanger
50 1st air heat exchanger
51 1st side
52 Second side
53 Third side
54 Open surface
55 Distribution space (space)
60 Second air heat exchanger
61 Slope
70 Support base
77 First stand side (side)
79 Leg
S1 1st machine room
S2 Second machine room
S3 3rd machine room
S4 4th machine room

    The present invention relates to a refrigeration apparatus.

    Conventionally, a refrigeration apparatus such as an air conditioner is known.

    For example, the refrigeration apparatus disclosed in Patent Document 1 includes a plurality of refrigerant circuits to which a compressor, an air heat exchanger, and the like are connected, and a horizontally long support frame on which these devices are installed. The plurality of air heat exchangers are arranged in a line in the longitudinal direction of the support frame. On the other hand, the plurality of compressors are arranged, for example, near the front side of the support frame (see, for example, FIG. 9 of the same document).

JP 2013-079735 A

    As described in Patent Document 1, when a plurality of compressors and other devices are gathered and arranged near one side of the support frame, each compressor and other devices (for example, air heat) corresponding to these compressors are arranged. The relative position with respect to the exchanger is different for each such unit. In other words, in the refrigeration apparatus, the layout of refrigerant pipes and the like that connect each compressor and other devices is different for each unit. Therefore, the refrigerant pipe and the attachment structure associated with the refrigerant pipe become complicated, which leads to an increase in the cost of the refrigeration apparatus.

    This invention is made paying attention to such a subject, and is providing the refrigerating apparatus which can aim at simplification of refrigerant | coolant piping and its peripheral structure.

1st invention respond | corresponds to the several refrigerant circuit (10) to which a compressor (12), an air heat exchanger (50,60), and a receiver (15) are connected, and the said several compressor (12). A plurality of electrical component boxes (81) each having an electrical component (81a) and a support frame (70) having a plurality of frame portions (70A, 70B, 70C, 70D) arranged in a row, In each pedestal part (70A, 70B, 70C, 70D), the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the electrical component box (81) for the system corresponding to each other are provided. A water circuit (40) installed as one unit, connected to a water heat exchanger (35, 36) for exchanging heat between refrigerant and water, and a water pump (44) for conveying water, 82a), and the plurality of mounts (70A, 70B, 70C, 70D) include a first end mount (70A) and a second end mount ( 70D), and the above electrical component box for operation 82) is installed only in the first end-side gantry (70A) of the first end-side gantry (70A) and the second end-side gantry (70D), and the water pump (44) Of the first end-side pedestal portion (70A) and the second end-side pedestal portion (70D), the second end-side pedestal portion (70D) is installed only in the second end-side pedestal portion (70D) .

    In the first invention, the support frame (70) is configured by arranging a plurality of frame parts (70A, 70B, 70C, 70D) in a line. And the compressor (12) connected to a common refrigerant circuit (10), the air heat exchanger (50, 60), the receiver (15), and the electrical component box for systems corresponding to this compressor (12) (81) is installed on each pedestal (70A, 70B, 70C, 70D) as one unit.

    In this way, the relative positions of the corresponding compressor (12), air heat exchanger (50, 60), and receiver (15) are made similar among the plurality of gantry parts (70A, 70B, 70C, 70D). Or the same. Thereby, in each mount part (70A, 70B, 70C, 70D), refrigerant | coolant piping can be arrange | positioned similarly. As a result, in each pedestal part (70A, 70B, 70C, 70D), the refrigerant piping, the surrounding mounting structure, and the like can be shared, and the refrigeration apparatus can be simplified.

    Further, in the present invention, the relative positions of the compressor (12) and the electrical component box (81) for the system corresponding to the compressor (12) are made similar in the plurality of mount parts (70A, 70B, 70C, 70D). Or the same. As a result, in each pedestal (70A, 70B, 70C, 70D), the electrical wiring between the compressor (12) and the system electrical component box (81), the surrounding mounting structure, etc. can be shared, The apparatus can be simplified.

In the first invention, since the electrical component box for operation (82) is installed on the first end-side mount (70A) and the water pump (44) is installed on the second end-side mount (70D), The distance between the electrical component box (82) and the water pump (44) can be increased. For this reason, even if water leaks around the water pump (44), this water can be prevented from reaching the electrical component box for operation (82).

In a second aspect based on the first aspect , the plurality of pedestal portions (70A, 70B, 70C, 70D) are formed of the first end side pedestal portion (70A) and the second end side pedestal portion (70D). It includes at least one intermediate mount (70B, 70C) in between.

In the second invention, the support frame (70) is configured by the first end frame (70A), the intermediate frame (70B, 70C), and the second frame (70D) arranged in a line. Between the electrical component box for operation (82) installed on the first end side frame (70A) and the water pump (44) installed on the second end side frame (70D), there is an intermediate frame Since (70B, 70C) is arranged, the distance between the electrical component box for operation (82) and the water pump (44) can be increased. For this reason, even if water leaks around the water pump (44), this water can be reliably prevented from reaching the electrical component box for operation (82).

    Further, the electrical component box for operation (82) and the water pump (44) are installed on the most pedestal portion (70A, 70D) among the plurality of pedestal portions (70A, 70B, 70C, 70D). For this reason, access to the electrical component box for operation (82) and the water pump (44) is facilitated, and maintenance thereof can be easily performed.

According to a third aspect of the present invention, in the first or second aspect of the invention, the second end-side gantry (70D) is directed from the first end-side gantry (70A) to the second end-side gantry (70D). In this order, the electrical component box for system (81), the compressor (12), and the water pump (44) are arranged.

In 3rd invention, a compressor (12) is arrange | positioned between the electrical component box for systems (81) and the water pump (44) in the 2nd end side mount part (70D). For this reason, the distance between the electrical component box for system (81) and the water pump (44) can be increased. As a result, even if water leaks around the water pump (44), this water can be prevented from reaching the system electrical component box (81).

In a fourth aspect based on the second aspect , in at least one of the intermediate frame portions (70B, 70C), the first end side frame portion (70A) faces the second end side frame portion (70D). The system electrical component box (81), the compressor (12), and the water heat exchanger (35, 36) are arranged in this order.

In the fourth aspect of the invention, the compressor (12) is disposed between the system electrical component box (81) and the water heat exchanger (35, 36) in the intermediate mount (70B, 70C). For this reason, the distance between the electrical component box for system (81) and the water heat exchanger (35, 36) can be increased. As a result, even if water leaks around the water heat exchanger (35, 36), the water can be prevented from reaching the electrical component box for system (81).

According to a fifth invention, in any one of the first to fourth inventions, the support frame (70) has at least one side surface along the arrangement direction of the frame parts (70A, 70B, 70C, 70D). A maintenance port (86) is formed, and in at least one of the plurality of mounts (70A, 70B, 70C, 70D), the compressor (12) is closer to the maintenance port (86) than the receiver (15). It is characterized by being arranged.

In the fifth invention, since the compressor (12) is disposed closer to the maintenance port (86) than the receiver (15), the compressor is passed through the maintenance port (86) from the side surface in the width direction of the support base (70). The maintenance of (12) can be performed easily. Since the receiver (15) has a lower maintenance frequency than the compressor (12), even if the receiver (15) is arranged on the back side of the compressor (12), there is no major problem.

According to a sixth invention, in the fifth invention, the electrical component box for system (81) is more maintained than the receiver (15) in at least one of the plurality of mount parts (70A, 70B, 70C, 70D). It is arranged near the mouth (86).

In the sixth invention, since the electrical component box (81) for the system is disposed closer to the maintenance port (86) than the receiver (15), the maintenance port (86) is viewed from the side surface in the width direction of the support frame (70). Through this, maintenance of the electrical component box (81) for the system can be easily performed. Since the receiver (15) has a lower maintenance frequency than the system electrical component box (81), even if the receiver (15) is arranged on the back side of the system electrical component box (81), there is no major problem.

According to a seventh invention, in the fifth or sixth invention, the compressor (12) is installed at the bottom of the plurality of mount parts (70A, 70B, 70C, 70D) and the maintenance port (86 ) Is provided with a draw-out bottom plate (83) that can be drawn out.

In the seventh invention, the compressor (12) can be pulled out to the outside of the maintenance port (86) by pulling the drawer bottom plate (83) toward the maintenance port (86).

According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the one unit installed on each of the mount parts (70A, 70B, 70C, 70D) is connected to each of the refrigerant circuits (10). It includes a refrigerant cooling unit (25) that is connected and cools the corresponding electrical component (81a) of the system electrical component box (81) with a refrigerant.

According to the eighth aspect of the invention, the refrigerant cooling unit (25) is installed on each pedestal (70A, 70B, 70C, 70D). Each refrigerant cooling unit (25) cools the electrical component (81a) of the corresponding system electrical component box (81) by the refrigerant flowing through the refrigerant circuit (10). The refrigerant cooling unit (25) is installed on the same base (70A, 70B, 70C, 70D) together with the corresponding compressor (12) and system electrical component box (81). For this reason, in each pedestal part (70A, 70B, 70C, 70D), the distance between the refrigerant cooling unit (25), the compressor (12), and the system electrical component box (81) is relatively short. The layout can be shared by each pedestal (70A, 70B, 70C, 70D). As a result, the refrigerant pipes around the refrigerant cooling unit (25) can be shortened, and the refrigerant pipes and their peripheral structures in the gantry portions (70A, 70B, 70C, 70D) can be shared.

    According to the first aspect of the present invention, each pedestal unit includes a compressor (12), an air heat exchanger (50, 60), a receiver (15), and a system electrical component box (81) corresponding to each other as an integral unit. Since it is installed at (70A, 70B, 70C, 70D), the refrigerant piping, the electrical wiring, the surrounding mounting structure, etc. can be made common among the plurality of mount parts (70A, 70B, 70C, 70D). As a result, it is possible to improve the assembly of the refrigeration apparatus and reduce the cost.

    In addition, by configuring the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the system electrical component box (81) as one unit in this way, a new refrigeration system is provided. You can add more units or omit units that are no longer needed.

    Moreover, even if a plurality of pedestals (70A, 70B, 70C, 70D) are arranged in a row, for example, the refrigerant pipe connecting the compressor (12), the receiver (15), and the air heat exchanger (50, 60) is not much. It won't be long. Therefore, the layout of the refrigerant piping can be configured simply.

According to the first invention, the distance between the operation electrical component box (82) most important for the operation of the refrigeration apparatus and the water pump (44) can be increased, and the water pump (44) leaks water. The malfunction of the electrical component box for operation (82) caused by this can be avoided.

In particular, according to the second aspect of the present invention, the distance between the operation electrical component box (82) and the water pump (44) can be sufficiently increased, and the operation electrical component caused by water leakage from the water pump (44). The malfunction of the product box (82) can be avoided reliably. In addition, maintenance of the electrical component box for operation (82) and the water pump (44) is facilitated.

According to the third aspect of the present invention, the distance between the water pump (44) and the system electrical component box (81) can be sufficiently separated, and the electrical system components for the system due to water leakage of the water pump (44). The malfunction of the box (81) can also be avoided. Furthermore, according to the fourth aspect of the invention, the distance between the electrical component box for the system (81) and the water heat exchanger (35, 36) can also be sufficiently separated, resulting from water leakage from the water pump (44). The malfunction of the electrical component box (81) for the system can also be avoided.

According to the fifth aspect, the compressor (12) can be easily maintained through the maintenance port (86). According to the sixth aspect , maintenance of the electrical component box for system (81) can be easily performed through the maintenance port (86). According to the seventh aspect of the present invention, the compressor (12) can be easily maintained by pulling out the drawer bottom plate (83) even in a situation where the maintenance space is relatively narrow.

According to the eighth invention, it is possible to simplify the refrigerant piping and the mounting structure around the refrigerant cooling unit (25) for cooling the electric component (81a) of the system electric component box (81).

FIG. 1 is an overall perspective view showing the front side and the right side of the chiller device. FIG. 2 is an overall perspective view showing the front side and the left side of the chiller device. FIG. 3 is a piping system diagram of the chiller device. FIG. 4 is a front view of the chiller device. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a schematic configuration diagram in which a part of the side of the first air heat exchanger is enlarged. FIG. 7 is a schematic configuration diagram enlarging a part of the side of the second air heat exchanger. FIG. 8 is a plan view showing the arrangement of main equipment inside the machine room. FIG. 9 is a front view in which a plurality of chiller devices are arranged on the left and right.

    Hereinafter, embodiments of the present invention will be described 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.

<< Embodiment of the Invention >>
The refrigeration apparatus of the present invention is a cold / hot water chiller apparatus (1) that cools and heats water using a refrigerant. As shown in FIGS. 1 and 2, the chiller device (1) is configured, for example, by arranging four heat source units (5A, 5B, 5C, 5D) in a line.

-Piping system of chiller device-
The piping system of the chiller device (1) will be described with reference to FIG. The chiller device (1) includes four refrigerant circuits (10), one water circuit (40), and two water heat exchangers (35, 40) connected to each refrigerant circuit (10) and the water circuit (40). 36). In each refrigerant circuit (10), a refrigerant is circulated to perform a vapor compression refrigeration cycle. Inflow water is supplied to the water circuit (40) from a predetermined water supply source. The effluent water that has been heated or cooled in the water circuit (40) is supplied to a target for temperature regulation. In addition, the quantity of a refrigerant circuit (10), a water heat exchanger (35, 36), and a water circuit (40) is a mere illustration, and another quantity may be sufficient as it.

<Refrigerant circuit>
Each refrigerant circuit (10) is configured by connecting a heat source circuit (11) and a utilization circuit (30). The four heat source circuits (11) correspond to the four heat source units (5A, 5B, 5C, 5D) one by one. Since the configurations of the heat source circuit (11) and the utilization circuit (30) are basically the same, FIG. 3 shows the detailed structure of the heat source circuit (11) of the first heat source unit (5A), and other heat source units. The detailed structure of the heat source circuit (11) (5B, 5C, 5D) is not shown.

[Heat source circuit]
The heat source circuit (11) is provided in each corresponding heat source unit (5A, 5B, 5C, 5D). The heat source circuit (11) includes a compressor (12), a first air heat exchanger (50), a second air heat exchanger (60), a first expansion valve (13), a second expansion valve (14), A receiver (15) and a four-way selector valve (16) are connected.

    The compressor (12) sucks and compresses the refrigerant, and then discharges the compressed refrigerant. The first air heat exchanger (50) and the second air heat exchanger (60) are fin-and-tube heat exchangers. In each air heat exchanger (50, 60), the air conveyed by the fan (17) and the refrigerant exchange heat. Each of the first expansion valve (13) and the second expansion valve (14) is an electric valve having a variable opening degree. The first air heat exchanger (50) and the second air heat exchanger (60) adjacent to each other constitute a heat exchanging section (48) for exchanging heat between the refrigerant and the air.

    The first air heat exchanger (61) and the first expansion valve (13) are connected to the first parallel circuit (18), and the second air heat exchanger (60) and the second expansion valve (14) Two parallel circuits (19) are connected. The first parallel circuit (18) and the second parallel circuit (19) constitute a refrigerant parallel circuit that is in a parallel relationship with each other.

    The receiver (15) is a vertically long hollow sealed container and constitutes a refrigerant regulator. Excess refrigerant is stored in the receiver (15).

    The four-way selector valve (16) has first to fourth ports. In the four-way switching valve (16), the first port is connected to the discharge part of the compressor (12), the second port is connected to the suction part of the compressor (12), and the third port is connected to each air heat exchanger ( 50, 60) and the fourth port is connected to the gas line (31) of the utilization circuit (30). The four-way switching valve (16) includes a state in which the first port and the third port communicate with each other, and a state in which the second port and the fourth port communicate with each other (first state indicated by a solid line in FIG. 3), The state is switched to the state in which the 4 ports communicate and the second port and the third port communicate (second state indicated by a broken line in FIG. 3).

    A supercooling unit (20) and a refrigerant cooling unit (25) are connected to the heat source circuit (11).

    The supercooling unit (20) includes a supercooling heat exchanger (21), an injection circuit (22), and a first motor operated valve (23). The supercooling heat exchanger (21) has a first channel (21a) communicating with the receiver (15) and a second channel (21b) connected to the injection circuit (22). The injection circuit (22) has an inflow end connected between the receiver (15) and the supercooling unit (20), and an outflow end communicating with the suction portion of the compressor (12). The first motor operated valve (23) is connected to the upstream side of the second flow path (21b) in the injection circuit (22). The first motor operated valve (23) is an electronic expansion valve having a variable opening. In the supercooling heat exchanger (21), the liquid refrigerant flowing through the first flow path (21a) and the refrigerant flowing through the second flow path (21b) exchange heat. Thereby, in a supercooling heat exchanger (21), the liquid refrigerant which flows through the 1st channel (21a) is cooled.

    The refrigerant cooling unit (25) includes a cooling circuit (26) and a heat transfer member (27). One end of the cooling circuit (26) branches into two hands. One of the two branches of the cooling circuit (26) is connected between the first air heat exchanger (50) and the first expansion valve (13) in the first parallel circuit (18). The other of the two branches of the cooling circuit (26) is connected between the second air heat exchanger (60) and the second expansion valve (14) in the second parallel circuit (19). The other end of the cooling circuit (26) is connected between the receiver (15) and the two expansion valves (13, 14). For example, a second motor-operated valve (28), which is an electronic expansion valve, is connected to the cooling circuit (26).

    The heat transfer member (27) is made of a material having high thermal conductivity such as flat aluminum. A heat transfer tube constituting the cooling circuit (26) is in thermal contact with one surface of the heat transfer member (27). The electrical component (81a) (for example, an inverter board having a switching element) is in thermal contact with the other surface of the heat transfer member (27). Thereby, the refrigerant of the refrigerant cooling unit (25) is used for cooling the electrical component (81a).

    Various sensors are provided in the heat source circuit (11). Specifically, the first refrigerant temperature sensor (29a) is connected to the gas end of the first air heat exchanger (50). A second refrigerant temperature sensor (29b) is connected to the gas end of the second air heat exchanger (60). A suction pressure sensor (29c) is connected to the suction portion of the compressor (12). A 1st refrigerant | coolant temperature sensor (29a) detects the temperature of the refrigerant | coolant which flowed out the 1st air heat exchanger (50) used as an evaporator. A 2nd refrigerant | coolant temperature sensor (29b) detects the temperature of the refrigerant | coolant which flowed out the 2nd air heat exchanger (60) used as an evaporator. The suction pressure sensor (29c) detects the pressure of the suction refrigerant (low pressure refrigerant) sucked into the compressor (12).

[Use circuit]
The utilization circuit (30) is connected between each heat source unit (5A, 5B, 5C, 5D) and the water heat exchanger (35, 36). Specifically, the utilization circuit (30) corresponding to the first heat source unit (5A) is connected to the first refrigerant side flow path (35a) of the first water heat exchanger (35). The utilization circuit (30) corresponding to the second heat source unit (5B) is connected to the second refrigerant side flow path (35b) of the first water heat exchanger (35). The utilization circuit (30) corresponding to the third heat source unit (5C) is connected to the third refrigerant side flow path (36a) of the second water heat exchanger (36). The utilization circuit (30) corresponding to the fourth heat source unit (5D) is connected to the fourth refrigerant side flow path (36b) of the second water heat exchanger (36).

    Each utilization circuit (30) has a gas line (31) and a liquid line (32), respectively. The gas line (31) is connected between the gas end of the water heat exchanger (35, 36) and the fourth port of the four-way switching valve (16). The liquid line (32) is connected between the liquid end of the water heat exchanger (35, 36) and the supercooling heat exchanger (21). For example, a third expansion valve (33), which is an electronic expansion valve, is connected to the liquid line (32).

<Water circuit>
The water circuit (40) has an inflow pipe (41), a relay pipe (42), and an outflow pipe (43) in order from the upstream side toward the downstream side. The inflow pipe (41) is connected to the inflow end of the first water flow path (35c) of the first water heat exchanger (35). The relay pipe (42) is connected between the first water flow path (35c) of the first water heat exchanger (35) and the second water flow path (36c) of the second water heat exchanger (36). The outflow pipe (43) is connected to the outflow end of the second water flow path (36c) of the second water heat exchanger (36). Connected to the inflow pipe (41) is a water pump (44) for transporting water from the water circuit (40).

<Control part>
The chiller device (1) includes a control unit (81b) that controls each device of the refrigerant circuit (10). The control unit (81b) includes, for example, a microcomputer and a memory, and controls the opening degrees of the first expansion valve (13) and the second expansion valve (14). Specifically, in the heating operation described later, the control unit (81b) controls the first expansion valve (13) so that the index indicating the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) approaches the target value. ) Is controlled. In addition, in the heating operation, the controller (81b) opens the opening of the second expansion valve (14) so that the index indicating the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) approaches the target value. To control.

-Operation of chiller device-
The basic operation of the chiller device (1) will be described with reference to FIG. In the chiller device (1), a cooling operation for cooling water and a heating operation for heating water are switched.

<Cooling operation>
In the cooling operation, the four-way switching valve (16) is in the first state, each air heat exchanger (50, 60) becomes a radiator or condenser, and the water heat exchanger (35, 36) becomes an evaporator. Is done. Specifically, the refrigerant compressed by the compressor (12) is divided into the first air heat exchanger (50) and the second air heat exchanger (60). In each air heat exchanger (50, 60), the refrigerant dissipates heat to the outdoor air and condenses. The refrigerant radiated by the first air heat exchanger (50) passes through the fully opened first expansion valve (13). The refrigerant radiated by the second air heat exchanger (60) passes through the fully opened second expansion valve (14). The refrigerant merged at the receiver (15) passes through the supercooling heat exchanger (21), is decompressed by the third expansion valve (33), and then flows through the water heat exchanger (35, 36). In the water heat exchanger (35, 36), the refrigerant absorbs heat from the water in the water circuit (40) and evaporates, and the water is cooled. The refrigerant evaporated in the water heat exchanger (35, 36) is sucked into the compressor (12) and compressed.

<Heating operation>
In the heating operation, the four-way switching valve (16) is in the second state, the water heat exchanger (35, 36) is a radiator or condenser, and each air heat exchanger (50, 60) is an evaporator. Is done. Specifically, the refrigerant compressed by the compressor (12) flows through the water heat exchanger (35, 36). In the water heat exchanger (35, 36), the refrigerant dissipates heat to the water in the water circuit (40) and condenses, and the water is heated. The refrigerant condensed in the water heat exchanger (35, 36) sequentially passes through the fully opened third expansion valve (33), the supercooling heat exchanger (21), and the receiver (15), and the first expansion valve ( 13) and the second expansion valve (14). The refrigerant decompressed by the first expansion valve (13) evaporates in the first air heat exchanger (50). The refrigerant decompressed by the second expansion valve (14) evaporates in the second air heat exchanger (60). The refrigerant evaporated in each air heat exchanger (50, 60) joins and is then sucked into the compressor (12) and compressed.

    In the heating operation, the openings of the first expansion valve (13) and the second expansion valve (14) are individually adjusted by the control unit (81b). Specifically, the opening degree of the first expansion valve (13) is adjusted so that the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) becomes a predetermined value. The opening degree of the second expansion valve (14) is adjusted so that the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) becomes a predetermined value. Here, the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) is, for example, the temperature of the refrigerant detected by the first refrigerant temperature sensor (29a) and the pressure of the refrigerant detected by the suction pressure sensor (29c). It is calculated | required from the difference with the saturation temperature equivalent to. Similarly, the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) is, for example, the temperature of the refrigerant detected by the second refrigerant temperature sensor (29b) and the pressure of the refrigerant detected by the suction pressure sensor (29c). It is calculated | required from the difference with the saturation temperature equivalent to. Instead of directly calculating the superheat degree in this way, the temperature and pressure of the refrigerant can be used as they are as an index indicating the superheat degree.

    In this way, in the heating operation, by controlling the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) and the second air heat exchanger (60) individually, each air heat exchanger (50, In 60), the refrigerant can be reliably evaporated to a predetermined degree of superheat. That is, it is possible to reliably prevent the refrigerant from flowing out in a wet state in each air heat exchanger (50, 60) or from flowing out in an excessively dry state. Thereby, the evaporation capability of each air heat exchanger (50, 60) can be sufficiently secured. Further, it is possible to reliably avoid the liquid refrigerant from being sucked into the compressor (12).

-Structure of chiller device-
Next, the detailed structure of the chiller device (1) will be described with reference to FIGS. In the following description, the description indicating the directions of “front”, “back”, “right”, “left”, “up” and “down” is based on the direction shown in FIG. 1 in principle. .

<Overall schematic configuration>
In the chiller device (1), four heat source units (5A, 5B, 5C, 5D) are arranged in the front-rear direction. The four heat source units (5A, 5B, 5C, 5D) are arranged in order from the front side to the rear side, the first heat source unit (5A), the second heat source unit (5B), the third heat source unit (5C), and the Consists of 4 heat source units (5D).

    Each heat source unit (5A, 5B, 5C, 5D) has one upper casing (46) and one pedestal (70A, 70B, 70C, 70D). These pedestal portions (70A, 70B, 70C, 70D) include a first pedestal portion (70A) corresponding to the first heat source unit (5A) and a second pedestal portion (70B corresponding to the second heat source unit (5B)). ), A third frame part (70C) corresponding to the third heat source unit (5C), and a fourth frame part (70D) corresponding to the fourth heat source unit (5D). These pedestal parts (70A, 70B, 70C, 70D) are connected in the front-rear direction to constitute an integral support pedestal (70). The first pedestal portion (70A) constitutes a first side end pedestal portion disposed on the foremost side. The fourth pedestal portion (70D) constitutes a second side end pedestal portion (70A, 70B, 70C, 70D) arranged on the rearmost side. The second frame part (70B) and the third frame part (70C) respectively constitute intermediate frame parts arranged between the first frame part (70A) and the fourth frame part (70D). The number of these pedestal portions (70A, 70B, 70C, 70D) is merely an example, but the number of pedestal portions is preferably two or more, more preferably three or more, and may be five or more.

    Between each upper casing (46) and each frame part (70A, 70B, 70C, 70D), the 1st air heat exchanger (50) and the 2nd air heat exchanger which comprise a heat exchange part (48) (60) and intermediate frame portions (65A, 65B, 65C, 65D) covering the second air heat exchanger (60), respectively.

<Upper casing>
The upper casing (46) is provided at the upper end of the heat source unit (5A, 5B, 5C, 5D). Each upper casing (46) is formed in a flat hollow rectangular box shape. Each fan (17) is accommodated in the upper casing (46) (see FIG. 4). A circular air outlet (46a) is formed on the upper side of the upper casing (46) (see FIGS. 1 and 2). When the fan (17) is activated, the air outside the two air heat exchangers (50, 60) flows into the inside of the two air heat exchangers (50, 60). This air flows upward in the two air heat exchangers (50, 60), and is blown upward from the air outlet (46a).

<First air heat exchanger>
The first air heat exchanger (50) is provided corresponding to each heat source unit (5A, 5B, 5C, 5D) or each gantry (70A, 70B, 70C, 70D). Each first air heat exchanger (50) has first to third side portions (51, 52, 53) through which air passes. The first to third side portions (51, 52, 53) constitute a ventilation portion through which air passes.

    The first side surface portion (51) and the second side surface portion (52) are a pair of side surface portions facing each other. The first side surface portion (51) constitutes the front side surface of the first air heat exchanger (50), and the second side surface portion (52) constitutes the rear side surface of the first air heat exchanger (50). The third side surface portion (53) is a central side surface portion formed continuously between the first side surface portion (51) and the second side surface portion (52), and the first air heat exchanger (50). Of the left side of The four first air heat exchangers (50) are arranged adjacent to each other such that the third side surface portion (53) is continuous in the horizontal direction (front-rear direction).

    As shown in FIG. 5, the first air heat exchanger (50) is configured such that the side surface portions (51, 52, 53) are arranged in a substantially U shape in a plan view. An open surface (54) is formed on a side surface of the first air heat exchanger (50) where each side surface portion (51, 52, 53) is not present. The first air heat exchanger (50) is a vertical installation type in which the side surfaces (51, 52, 53) are vertical. No member or the like is provided around each side surface portion (51, 52, 53) of the first air heat exchanger (50). Therefore, when the fan (17) is activated, the air around the first air heat exchanger (50) passes through the side surfaces (51, 52, 53), respectively, and the first air heat exchanger (50) Flows into the interior.

    In the first air heat exchanger (50), the first side surface portion (51) and the second side surface portion (52) are arranged in a substantially C shape in plan view. That is, the first side surface portion (51) and the second side surface portion (52) are arranged so as to expand toward each side end portion so that the distance between them increases. In other words, the first side surface portion (51) and the second side surface portion (52) are inclined outward (front-rear direction) so as to form an obtuse angle with the third side surface portion (53). That is, as shown in FIG. 5, in the first air heat exchanger (50), a virtual plane P1 along the first side surface portion (51) and a virtual plane P3 along the third side surface portion (53) are provided. The formed angle θ1 is greater than 90 degrees. In the first air heat exchanger (50), the angle θ2 formed by the virtual plane P2 along the second side surface portion (52) and the virtual plane P3 along the third side surface portion (53) is greater than 90 degrees. large.

    As shown in FIG. 5, between the pair of first air heat exchangers (50) adjacent to each other in the front and rear directions, a circulation space (55) through which air can flow is formed. The distribution space (55) becomes wider as it approaches the third side surface portion (53) in plan view. By thus forming the opening side of the circulation space (55) to be wide, air can easily flow into the circulation space (55).

<Second air heat exchanger>
As shown in FIG.4 and FIG.5, the 2nd air heat exchanger (60) is arrange | positioned so as to oppose the open surface (54) of the right side of a 1st air heat exchanger (50). A 2nd air heat exchanger (60) is formed in a substantially flat plate shape as the whole external shape. A slope portion (61) formed in a substantially flat surface and inclined in the left-right direction is formed in the entire area of the second air heat exchanger (60). The 2nd air heat exchanger (60) thru / or slope part (61) incline so that it may leave the open surface (54) of the 1st air heat exchanger (50) toward these upper ends.

    The height position of the upper end of the second air heat exchanger (60) is substantially equal to the height position of the upper end of the first air heat exchanger (50). Further, the height position of the lower end of the second air heat exchanger (60) is substantially equal to the height position of the lower end of the first air heat exchanger (50). The second air heat exchanger (60) is disposed so as to cover the entire area of the open surface (54) of the first air heat exchanger (50).

<Number of rows of refrigerant flow paths (C) of the first air heat exchanger (50) and the second air heat exchanger (60)>
As shown in FIG. 6, in the first air heat exchanger (50), the number of rows (number of passes) of the refrigerant flow paths (C) in the air passage direction (the width direction of the first fin (56)) is three. It is. On the other hand, as shown in FIG. 7, in the second air heat exchanger (60), the number of the refrigerant flow paths (C) in the air passage direction (the width direction of the second fin (62)) (the number of passes). ) Is four columns. That is, the number of the refrigerant flow paths (C) in the second air heat exchanger (60) is larger than the number of the refrigerant flow paths (C) in the first air heat exchanger (50). Moreover, in this embodiment, the width | variety of the 1st fin (56) of a 1st air heat exchanger (50) and the width | variety of the 2nd fin (62) of a 2nd air heat exchanger (60) are substantially equal.

    As shown in FIG. 4, the second air heat exchanger (60) is disposed obliquely so that the outflow surface faces the fan (17) side. Therefore, the outflow surface of the second air heat exchanger (60) according to the embodiment is closer to the fan (17) than the case where the second air heat exchanger (60) is placed vertically, and the air Is easier to flow smoothly. That is, the flow resistance between the second air heat exchanger (60) and the fan (17) can be reduced by arranging the second air heat exchanger (60) obliquely. Therefore, the number of rows of the refrigerant flow paths (C) of the second air heat exchanger (60) is made larger than the number of rows of the refrigerant flow paths (C) of the first air heat exchanger (50), The heat transfer area of the whole 2nd air heat exchanger (60) can be expanded, ensuring sufficient ventilation of 2 air heat exchanger (60).

   Note that the number of rows of the refrigerant flow paths (C) of the second air heat exchanger (60) is the same as the number of rows of the refrigerant flow paths (C) of the first air heat exchanger (50) (for example, three rows). It is good.

<Intermediate frame>
As shown in FIG. 5 and the like, the four intermediate frame portions (65A, 65B, 65C, 65D) include a first intermediate frame portion (65A) and a second heat source unit (5B) corresponding to the first heat source unit (5A). The second intermediate frame portion (65B) corresponding to the second heat source unit (5D), the third intermediate frame portion (65C) corresponding to the second heat source unit (5D), the second intermediate frame portion (65D) corresponding to the third heat source unit (5C). It consists of. The intermediate frame portions (65A, 65B, 65C, 65D) are arranged so as to cover the second air heat exchanger (60). The four intermediate frame portions (65A, 65B, 65C, 65D) each have a frame plate (66) that is inclined along the second air heat exchanger (60). The frame plate (66) is formed in a frame shape that covers the second air heat exchanger (60) from the outside, and an air ventilation opening (66a) is formed therein (see FIG. 1). That is, the slope part (61) of the second air heat exchanger (60) is exposed to the outside through the ventilation opening (66a) of the frame plate (66).

    As shown in FIG. 1, FIG. 5, etc., a first shielding plate (67) is formed on the front side of the first intermediate frame portion (65A). The first shielding plate (67) is located near the side end portion of the first side surface portion (51) of the first air heat exchanger (50) from the front end of the frame plate (66) of the first intermediate frame portion (65A). Formed over. Thus, the first shielding plate (67) prevents air from passing between the first side surface portion (51) of the first air heat exchanger (50) and the second air heat exchanger (60). ing. The first shielding plate (67) is formed in an inverted trapezoidal shape or a right triangle shape so that the widths on the left and right sides become narrower downward.

    As shown in FIG. 5, a second shielding plate (68) having substantially the same shape as the first shielding plate (67) is formed on the rear side of the fourth intermediate frame portion (65D). The second shielding plate (68) is near the side end of the second side surface (52) of the first air heat exchanger (50) from the rear end of the frame plate (66) of the fourth intermediate frame (65D). It is formed over. Thus, the second shielding plate (68) prevents air from passing between the second side surface portion (52) of the first air heat exchanger (50) and the second air heat exchanger (60). ing. The second shielding plate (68) is formed in an inverted trapezoidal shape or a right triangle shape so that the left and right widths become narrower downward.

    Between the adjacent second air heat exchangers (60), an intermediate shielding plate (69) having substantially the same shape as the first shielding plate (67) and the second shielding plate (68) is provided. That is, the intermediate shielding plate (69) is configured in a position and a shape that form substantially the same projection plane as the first shielding plate (67) and the second shielding plate (68) in front view. The right ends of the plurality (three in this example) of the intermediate shielding plates (69) are fixed to the side ends of the adjacent frame plates (66). The left end of each intermediate shielding plate (69) extends to the vicinity of the side end portions of the pair of side surface portions (51, 52) of the adjacent first air heat exchanger (50). Between the adjacent heat source units (5A, 5B, 5C, 5D), the intermediate shielding plate (69) allows the air inside one of the heat source units (5A, 5B, 5C, 5D) to move to the other heat source unit (5A, 5A, 5D). 5B, 5C, 5D) is prevented from drifting.

<Supporting stand>
The support frame (70) is formed in a substantially rectangular parallelepiped shape in the front-rear direction. The support frame (70) includes first to second horizontal frames (71a, 71b), first to fourth vertical frames (72a, 72b, 72c, 72d), and first to sixth intermediate frames (73a, 73b). 73c, 73d, 73e, 73f).

    The first horizontal frame (71a) is disposed at the right end of the support frame (70), and the second horizontal frame (71b) is disposed at the left end of the support frame (70). The first horizontal frame (71a) and the second horizontal frame (71b) are formed in a bar shape extending in the front-rear direction so as to be parallel to each other.

    The first vertical frame (72a) is fixed to the front end of the first horizontal frame (71a), and the second vertical frame (72b) is fixed to the rear end of the first horizontal frame (71a). The third vertical frame (72c) is fixed to the front end of the second horizontal frame (71b), and the fourth vertical frame (72d) is fixed to the rear end of the second horizontal frame (71b).

    The first to third intermediate frames (73a, 73b, 73c) are fixed to the intermediate part of the first horizontal frame (71a) and arranged in the front-rear direction. The fourth to sixth intermediate frames (73d, 73e, 73f) are fixed to the intermediate part of the second horizontal frame (71b) and arranged in the front-rear direction. The first to sixth intermediate frames (73f) are formed in a vertically long bar shape extending upward from the intermediate portion of each horizontal frame (71a, 71b), and are arranged in parallel to each other.

    One base part (74) is provided at the upper end of the support frame (70). The base portion (74) is supported by the first to fourth vertical frames (72d) and the first to sixth intermediate frames (73f). The base part (74) is formed in a horizontally long plate shape or a rectangular parallelepiped shape in the front-rear direction, and extends in parallel with the horizontal frames (71a, 71b). Two air heat exchangers (50, 60) (heat exchange part (48)) and intermediate frame parts (65A, 65B, 65C, 65D) are installed on the upper surface of the base part (74).

    A front panel (75) is provided in a vertical state on the front surface of the support frame (70). The front panel (75) is detachably attached to the first vertical frame (72a) and the third vertical frame (72c). A rear panel (76) is provided on the rear surface of the support frame (70) in a vertical state. The rear panel (76) is detachably attached to the second vertical frame (72b) and the fourth vertical frame (72d).

    A first frame side plate (77) is formed on the right side of the support frame (70). The first gantry side plate (77) is located below the open surface (54) of the first air heat exchanger (50). The first gantry side plate (77) includes vertical first to fourth side panels (77a, 77b, 77c, 77d). The first side panel (77a) is detachably attached to the first vertical frame (72a) and the first intermediate frame (73a). The second side panel (77b) is detachably attached to the first intermediate frame (73a) and the second intermediate frame (73b). The third side panel (77c) is detachably attached to the second intermediate frame (73b) and the third intermediate frame (73c). The fourth side panel (77d) is detachably attached to the third intermediate frame (73c) and the second vertical frame (72b).

    On the left side of the support frame (70), a second frame side plate (78) is formed. The second gantry side plate (78) is located below the first air heat exchanger (50). The second gantry side plate (78) includes vertical fifth to eighth side panels (78a, 78b, 78c, 78d). The fifth side panel (78a) is detachably attached to the third vertical frame (72c) and the fourth intermediate frame (73d). The sixth side panel (78b) is detachably attached to the fourth intermediate frame (73d) and the fifth intermediate frame (73e). The seventh side panel (78c) is detachably attached to the fifth intermediate frame (73e) and the sixth intermediate frame (73f). The eighth side panel (78d) is detachably attached to the sixth intermediate frame (73f) and the fourth vertical frame (72d).

    The first to fourth machine chambers (S1, S2, S3, S4) are defined between the first frame side plate (77) and the second frame side plate (78) of the support frame (70). The first to fourth machine chambers (S1, S2, S3, S4) are each configured as a rectangular parallelepiped space, and are arranged in a line in the front-rear direction. Specifically, the first machine room (S1) is defined between the first side panel (77a) and the fifth side panel (78a), and the second side panel (77b) and the sixth side panel (78b) A second machine room (S2) is defined between them. A third machine room (S3) is defined between the third side panel (77c) and the seventh side panel (78c), and a fourth machine is provided between the fourth side panel (77d) and the eighth side panel (78d). Chamber (S4) is partitioned.

    In the support frame (70), the parts for dividing the first machine room (S1) constitute the first frame part (70A), and the parts for dividing the second machine room (S2) are the second frame part. (70B), the part for partitioning the third machine room (S3) constitutes the third frame part (70C), and the part for partitioning the fourth machine room (S4) is the fourth frame part (70D) is configured.

    In the present embodiment, for example, the first to second horizontal frames (71a, 71b) and the base part (74) are provided in the machine rooms (S1, S2, S3) of the respective base parts (70A, 70B, 70C, 70D). , S4) are shared as parts. However, the first to second horizontal frames (71a, 71b) and the base part (74) are compatible with each machine room (S1, S2, S3, S4) to each base part (70A, 70B, 70C, 70D). You may divide | segment for every part to perform. If it does in this way, each frame part (70A, 70B, 70C, 70D) can be moved independently (for example, lifted) with each heat source unit (5A, 5B, 5C, 5D).

<leg>
As shown in FIG. 1, FIG. 2, FIG. 4 and the like, two legs (79) are provided at the lower end of the above-described support frame (70). One leg (79) is fixed to the lower end of the front panel (75), and the other leg (79) is fixed to the lower end of the rear panel (76). Each leg (79) extends horizontally from the lower end of the first gantry side plate (77) toward the right side. That is, the protruding part of each leg part (79) is located below the second air heat exchanger (60) or the intermediate frame part (65A, 65B, 65C, 65D). The number of legs (79) is not limited to this, and may be three or more.

    As shown in FIG. 4, the entire outer shape of the chiller device (1) is formed in a substantially inverted L shape when viewed from the front. That is, in the chiller device (1), the second air heat exchanger (60) and its surrounding parts project outward (right side) from the second gantry side plate (78). For this reason, there exists a possibility that a chiller apparatus (1) may fall to the right side. On the other hand, since the leg portion (79) extends from the lower end of the support frame (70) in the direction in which the second air heat exchanger (60) projects, such a fall can be reliably avoided.

<Layout of main equipment in the machine room>
Next, the layout of the main equipment inside the machine room (S1, S2, S3, S4) will be described with reference to FIG. In addition, in FIG. 8, illustration of the refrigerant | coolant piping for comprising a refrigerant circuit (10) is abbreviate | omitted.

[Outline of layout]
In each machine room (S1, S2, S3, S4), one compressor (12), one receiver (15), and one electrical component box (81) are installed. Each system electrical component box (81) is provided with electrical components (81a) such as an inverter board for supplying power to the corresponding compressor (12). Each machine room (S1, S2, S3, S4) is provided with the above-described refrigerant cooling unit (25) for cooling each electrical component (81a) of each system electrical component box (81). (Not shown in FIG. 8). Each system electrical component box (81) is provided with a controller (81b) for controlling the first expansion valve (13) and the second expansion valve (14) of the corresponding refrigerant circuit (10).

    An electrical component box for operation (82) is installed in the first machine room (S1). The operation electrical component box (82) is provided with an operation unit (82a) for operating the refrigeration apparatus. A first water heat exchanger (35) is installed in the second machine room (S2). A second water heat exchanger (36) is installed in the third machine room (S3). A water pump (44) is installed in the fourth machine room (S4).

[Drawer bottom plate]
In each machine room (S1, S2, S3, S4), one drawer bottom plate (83) is installed. The drawer bottom plate (83) is formed in a slightly horizontally long rectangular shape on the front and rear, and constitutes the bottom of the corresponding machine room (S1, S2, S3, S4). The drawer bottom plate (83) is slidably attached to the support frame (70) toward a maintenance space (85) formed on the right side of the support frame (70).

[First machine room]
In the first machine room (S1), a compressor (12), a receiver (15), a system electrical component box (81), and an operation electrical component box (82) are installed. The compressor (12) is disposed at the center in the front-rear direction of the first machine room (S1) and closer to the first gantry side plate (77) (close to the maintenance space (85)). In the first machine room (S1), the electrical component box (82) for operation is arranged on the front side (close to the front panel (75)) of the compressor (12). In the first machine room (S1), the receiver (15) is arranged behind the compressor (12) (near the rear panel (76) or the fourth machine room (S4)). In the first machine room (S1), a system electrical component box (81) is arranged on the left side of the receiver (15).

[Second machine room]
In the second machine room (S2), a compressor (12), a receiver (15), a system electrical component box (81), and a first water heat exchanger (35) are installed. In the second machine room (S2), near the first pedestal side plate (77), the electrical component box for system (81), the compressor (12), and the first water heat exchanger are arranged in order from the front side to the rear side. A vessel (35) is arranged. That is, in the second machine room (S2), the compressor (12) is disposed between the system electrical component box (81) and the first water heat exchanger (35). Each part of the relay pipe (42) and the outflow pipe (43) is arranged in the second machine room (S2). The relay pipe (42) and the outflow pipe (43) are disposed near the second gantry side plate (78) of the second machine room (S2).

[Third machine room]
In the third machine room (S3), a compressor (12), a receiver (15), a system electrical component box (81), and a second water heat exchanger (36) are installed. In the third machine room (S3), close to the first pedestal side plate (77), the electrical component box for system (81), the compressor (12), and the second water heat exchanger are arranged in order from the front side to the rear side. A vessel (36) is arranged. That is, in the third machine room (S3), the compressor (12) is disposed between the system electrical component box (81) and the second water heat exchanger (36). In the third machine chamber (S3), a part of each of the inflow pipe (41), the relay pipe (42), and the outflow pipe (43) is arranged. The inflow pipe (41), the relay pipe (42), and the outflow pipe (43) are disposed near the second gantry side plate (78) of the third machine room (S3). In the third machine room (S3), the receiver (15) is disposed between the relay pipe (42) and the outflow pipe (43) and the electrical component box for system (81).

[Fourth machine room]
In the fourth machine room (S4), a compressor (12), a receiver (15), a system electrical component box (81), and a water pump (44) are installed. In the fourth machine room (S4), close to the first pedestal side plate (77), in order from the front side to the rear side, the system electrical component box (81), the compressor (12), and the water pump (44) Is placed. That is, in the fourth machine room (S4), the compressor (12) is disposed between the system electrical component box (81) and the water pump (44). A part of each of the inflow pipe (41) and the outflow pipe (43) is arranged in the fourth machine chamber (S4). The inflow pipe (41) and the outflow pipe (43) are disposed near the second gantry side plate (78) of the fourth machine room (S4). In the fourth machine room (S4), the receiver (15) is disposed between the inflow pipe (41) and the outflow pipe (43) and the electrical component box for system (81). The inflow portion of the inflow pipe (41) extends from the fourth machine chamber (S4) through the second frame side surface (fourth side panel (77d)) to the outside. The outflow portion of the outflow pipe (43) extends from the fourth machine chamber (S4) through the rear panel (76) to the outside.

<Maintenance structure>
As shown in FIG. 8, in the chiller device (1), the front panel (75) and the first gantry side plate (77) constitute main maintenance surfaces. When the front panel (75) is removed, the operation electrical component box (82) is exposed to the outside through the front maintenance port (86). Thereby, the operation electrical component box (82) can be easily accessed. When the first to fourth side panels (77a, 77b, 77c, 77d) constituting the first gantry side plate (77) are removed, the compressor (12) of each machine room (S1, S2, S3, S4) The system electrical component box (81) in the second to fourth machine rooms (S4) is exposed to the outside through the side maintenance port (87). Thereby, the compressor (12) of each machine room (S1, S2, S3, S4) and the system electrical equipment box (81) of the second to fourth machine rooms (S4) can be easily accessed. The system electrical component box (81) in the first machine room (S1) can be accessed by removing the fifth side panel (78a) (see FIG. 2).

    Moreover, each drawer bottom plate (83) can be pulled out to the maintenance space (85) side by removing the first to fourth side panels (77a, 77b, 77c, 77d) (see FIG. 1). Thereby, work can be performed after the compressor (12) and other devices are pulled out to the maintenance space (85).

    As shown in FIG. 9, a plurality of chiller devices (1) may be installed in the left-right direction. In this case, of two adjacent chiller devices (1), the first gantry side plate (77) of one chiller device (1) and the second gantry side plate (78) of the other chiller device (1) face each other. And place it. In this case, a relatively wide maintenance space (85) can be secured below the second air heat exchanger (60) between the adjacent support frames (70). Therefore, it is possible to perform maintenance on each device while narrowing the interval between the plurality of chiller devices (1).

-Effect of the embodiment-
In the said embodiment, in each mount part (70A, 70B, 70C, 70D), the compressor (12) connected to the same refrigerant circuit (10), two air heat exchangers (50, 60), and a receiver ( 15) and the electrical component box (81) for the system corresponding to the compressor (12) are collectively arranged as one unit. In addition, in each pedestal part (70A, 70B, 70C, 70D), the supercooling unit (20) and the refrigerant cooling unit (25) connected to the same refrigerant circuit (10) are collectively arranged as one unit. The For this reason, the refrigerant pipes, the electrical wiring, and the surrounding mounting structure are similar or the same between the four mounts (70A, 70B, 70C, 70D). Can do. As a result, the apparatus structure of the refrigeration apparatus (1) can be simplified and the cost can be reduced.

    In the above embodiment, the second gantry is placed between the first gantry (70A) where the electrical component box for operation (82) is installed and the fourth gantry (70D) where the water pump (44) is installed. Since the part (70B) and the third pedestal part (70C) are arranged, the distance between the electrical component box for operation (82) and the water pump (44) can be increased. In addition, since the compressor (12) is arranged between the system electrical component box (81) and the water pump (44) in the fourth mount (70D), the system electrical component box (81) The distance from the water pump (44) can be increased. Moreover, in the 2nd mount part (70B) and the 3rd mount part (70C), the compressor (12) is arrange | positioned between the electrical component box for systems (81) and the water heat exchanger (35, 36). Therefore, the distance between the electrical component box for system (81) and the water heat exchanger (35, 36) can be increased. As described above, in this embodiment, the malfunction of the electrical component box for operation (82) and the electrical component box for system (81) due to water leakage of the water heat exchanger (35, 36) and the water pump (44). These devices can be placed inside the support frame (70) while preventing them from occurring.

    In the second frame part (70B), the third frame part (70C), and the fourth frame part (70D), the compressor (12) is opened through the side maintenance port (87) by opening the first frame side plate (77). ) And the electrical component box (81) for the system can be exposed to the outside. Therefore, maintenance of the compressor (12) and the system electrical component box (81) can be easily performed. Further, since a maintenance space (85) is secured outside the side surface maintenance port (87), access to the compressor (12) and the system electrical component box (81) is also easy. In addition, by pulling out the drawer bottom plate (83) to the maintenance space (85) through the side maintenance port (87), maintenance of the compressor (12) and other devices can be performed more easily.

    In the first pedestal portion (70A), the operation electrical component box (82) can be easily accessed by opening the front panel (75). This is the same when a plurality of refrigeration apparatuses (1) are arranged side by side as shown in FIG.

<< Other Embodiments >>
The support frame (70) may be configured by only two frame parts (70A, 70D). In this case, the electrical component box for operation (82) is installed on one gantry (70A) (first end cradle), and the water pump (70D) (second end cradle) is connected to the water pump ( 44) is recommended. Also in this case, the distance between the electrical component box for operation (82) and the water pump (44) can be increased.

    As described above, the present invention is useful for a refrigeration apparatus.

1 Refrigeration equipment
10 Refrigerant circuit
13 First expansion valve
14 Second expansion valve
17 fans
48 Heat exchanger
50 1st air heat exchanger
51 1st side
52 Second side
53 Third side
54 Open surface
55 Distribution space (space)
60 Second air heat exchanger
61 Slope
70 Support base
77 First stand side (side)
79 Leg
S1 1st machine room
S2 Second machine room
S3 3rd machine room
S4 4th machine room

Claims (9)

A plurality of refrigerant circuits (10) to which a compressor (12), an air heat exchanger (50, 60) and a receiver (15) are connected;
A plurality of electrical component boxes (81) each having an electrical component (81a) corresponding to the plurality of compressors (12);
A support base (70) having a plurality of base parts (70A, 70B, 70C, 70D) arranged in a line;
In each of the pedestals (70A, 70B, 70C, 70D), the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the system electrical component box (81) corresponding to each other Is installed as a single unit. In claim 1,
A water circuit (40) to which a water heat exchanger (35, 36) for exchanging heat between the refrigerant and water and a water pump (44) for conveying water are connected;
An electrical component box for operation (82) including an operation part (82a),
The plurality of mount parts (70A, 70B, 70C, 70D) include a first end-side mount part (70A) and a second end-side mount part (70D),
An electrical component box for operation (82) including an operation unit (82a) is installed on the first end-side gantry (70A),
The refrigeration apparatus, wherein the water pump (44) is installed on the second end-side gantry (70D). In claim 2,
The plurality of gantry parts (70A, 70B, 70C, 70D) include at least one intermediate gantry part (70B, 70C) between the first end side gantry part (70A) and the second end side gantry part (70D). ). In claim 2 or 3,
In the second end-side gantry (70D), in order from the first end-side gantry (70A) to the second end-side gantry (70D), the system electrical component box (81), the compression unit A refrigeration system comprising a machine (12) and the water pump (44). In claim 3,
In at least one of the intermediate frame parts (70B, 70C), the electrical component box for system (81) in order from the first end frame part (70A) to the second end frame part (70D). The refrigeration apparatus comprising the compressor (12) and the water heat exchanger (35, 36). In any one of Claims 1 thru | or 5,
The support frame (70) has a maintenance port (86) formed on at least one side surface along the arrangement direction of the frame units (70A, 70B, 70C, 70D),
In at least one of the plurality of mount parts (70A, 70B, 70C, 70D), the compressor (12) is disposed closer to the maintenance port (86) than the receiver (15). apparatus. In claim 6,
In at least one of the plurality of mount parts (70A, 70B, 70C, 70D), the electrical component box for the system (81) is disposed closer to the maintenance port (86) than the receiver (15). Refrigeration equipment. In claim 6 or 7,
At the bottom of the plurality of pedestals (70A, 70B, 70C, 70D), the compressor (12) is installed and a drawer bottom plate (83) that can be pulled out toward the maintenance port (86) is provided. A refrigeration apparatus characterized by that. In any one of claims 1 to 8,
The one unit installed on each pedestal (70A, 70B, 70C, 70D) is connected to each refrigerant circuit (10), and the corresponding electrical component (81a) of the system electrical component box (81) is connected. And a refrigerant cooling unit (25) for cooling with a refrigerant.

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