EP3502592A1 - Refrigeration device - Google Patents

Refrigeration device Download PDF

Info

Publication number
EP3502592A1
EP3502592A1 EP17855507.4A EP17855507A EP3502592A1 EP 3502592 A1 EP3502592 A1 EP 3502592A1 EP 17855507 A EP17855507 A EP 17855507A EP 3502592 A1 EP3502592 A1 EP 3502592A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
electric component
refrigerant
air heat
component box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17855507.4A
Other languages
German (de)
English (en)
French (fr)
Inventor
Toshihiro Nagashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP3502592A1 publication Critical patent/EP3502592A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/10—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/24—Cooling of electric components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/60—Arrangement or mounting of the outdoor unit
    • F24F1/68—Arrangement of multiple separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/006—Cooling of compressor or motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves

Definitions

  • the present invention relates to a refrigeration apparatus.
  • a refrigeration apparatus such as an air conditioner has been known.
  • Patent Document 1 discloses a refrigeration apparatus including a plurality of refrigerant circuits to each of which a compressor, an air heat exchanger, and other components are connected, and a horizontally elongated support in which these components are installed.
  • the air heat exchangers are arranged in a row in a longitudinal direction of the support.
  • the compressors are arranged in a concentrated manner near the front side of the support, for example (e.g., see FIG. 9 ).
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2013-079735
  • a first aspect of the present invention is directed to a refrigeration apparatus which includes: a plurality of refrigerant circuits (10) to each of which a compressor (12), an air heat exchanger (50, 60) and a receiver (15) are connected; a plurality of system-side electric component boxes (81) each having an electric component (81a) corresponding to an associated one of the compressors (12); and a support (70) having a plurality of support parts (70A, 70B, 70C, 70D) arranged in a row, wherein the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the system-side electric component box (81) corresponding to each other are installed as a single unit in each of the support parts (70A, 70B, 70C, 70D).
  • the plurality of support parts (70A, 70B, 70C, 70D) are arranged in a row to form the support (70).
  • the compressor (12), the air heat exchanger (50, 60), and the receiver (15) connected to a common refrigerant circuit (10), and the system-side electric component box (81) corresponding to the compressor (12) are installed as a single unit in each of the support parts (70A, 70B, 70C, 70D).
  • the relative positions of the compressor (12), the air heat exchanger (50, 60), and the receiver (15) corresponding to each other can be made similar or the same among the plurality of support parts (70A, 70B, 70C, 70D).
  • the refrigerant pipe and its peripheral mounting structure can be commonized among the support parts (70A, 70B, 70C, 70D), thereby simplifying the refrigeration apparatus.
  • the relative positions of the compressor (12) and the system-side electric component box (81) corresponding to the compressor (12) can be made similar or the same among the plurality of support parts (70A, 70B, 70C, 70D).
  • an electric wire between the compressor (12) and the system-side electric component box (81), and its peripheral mounting structure can be commonized among the support parts (70A, 70B, 70C, 70D), thereby simplifying the refrigeration apparatus.
  • a second aspect of the present invention is an embodiment of the first aspect.
  • a water circuit (40) to which a water heat exchanger (35, 36) allowing a refrigerant and water to exchange heat, and a water pump (44) transporting water are connected; and an operation-side electric component box (82) containing an operation unit (82a), wherein the plurality of support parts (70A, 70B, 70C, 70D) includes a first end support part (70A) and a second end support part (70D), the operation-side electric component box (82) containing the operation unit (82a) is installed in the first end support part (70A), and the water pump (44) is installed in the second end support part (70D).
  • the operation-side electric component box (82) is installed in the first end support part (70A), and the water pump (44) is installed in the second end side support part (70D).
  • This can increase the distance between the operation-side electric component box (82) and the water pump (44). Therefore, even if water leaks around the water pump (44), water can be blocked from reaching the operation-side electric component box (82).
  • a third aspect of the present invention is an embodiment of the second aspect.
  • the plurality of support parts (70A, 70B, 70C 70D) include at least one intermediate support part (70B, 70C) arranged between the first end support part (70A) and the second end support part (70D).
  • the first end support part (70A), the intermediate support part (70B, 70C), and the second end support part (70D) are arranged in a row to form the support (70). Since the intermediate support part (70B, 70C) is arranged between the operation-side electric component box (82) installed in the first end support part (70A) and the water pump (44) installed in the second end support part (70D), the distance between the operation-side electric component box (82) and the water pump (44) can be increased. Therefore, even if water leaks around the water pump (44), water can be reliably blocked from reaching the operation-side electric component box (82).
  • the operation-side electric component box (82) and the water pump (44) are respectively installed in the outermost support parts (70A, 70D) among the plurality of support parts (70A, 70B, 70C, 70D). This makes the operation-side electric component box (82) and the water pump (44) easily accessible, and facilitates the maintenance thereof.
  • a fourth aspect of the present invention is an embodiment of the second or third aspect.
  • the system-side electric component box (81), the compressor (12), and the water pump (44) are arranged in this order from the first end support part (70A) toward the second end support part (70D).
  • the compressor (12) is arranged between the system-side electric component box (81) and the water pump (44) in the second end support part (70D). This can increase the distance between the system-side electric component box (81) and the water pump (44). As a result, even if water leaks around the water pump (44), water can be blocked from reaching the system-side electric component box (81).
  • a fifth aspect of the present invention is an embodiment of the third aspect.
  • the system-side electric component box (81), the compressor (12), and the water heat exchanger (35, 36) are arranged in this order from the first end support part (70A) toward the second end support part (70D).
  • the compressor (12) is arranged between the system-side electric component box (81) and the water heat exchanger (35, 36) in the intermediate support part (70B, 70C). This can increase the distance between the system-side electric component box (81) and the water heat exchanger (35, 36). As a result, even if water leaks around the water heat exchanger (35, 36), water can be blocked from reaching the system-side electric component box (81).
  • a sixth aspect of the present invention is an embodiment of any one of the first to fifth aspects.
  • a maintenance port (86) is formed in at least one of side surfaces of the support (70) extending in a direction in which the support parts (70A, 70B, 70C, 70D) are arranged, and the compressor (12) is arranged closer to the maintenance port (86) than the receiver (15) in at least one of the plurality of support parts (70A, 70B, 70C, 70D).
  • the compressor (12) is arranged closer to the maintenance port (86) than the receiver (15). This can facilitate the maintenance of the compressor (12) through the maintenance port (86) from the side surface of the support (70) in a width direction thereof. Since the receiver (15) is less frequently maintained than the compressor (12), there is no significant trouble even if the receiver (15) is arranged across the compressor (12) from the maintenance port (86).
  • a seventh aspect of the present invention is an embodiment of the sixth aspect.
  • the system-side electric component box (81) is arranged closer to the maintenance port (86) than the receiver (15) in at least one of the plurality of support parts (70A, 70B, 70C, 70D).
  • the system-side electric component box (81) is arranged closer to the maintenance port (86) than the receiver (15). This can facilitate the maintenance of the system-side electric component box (81) through the maintenance port (86) from the side surface of the support (70) in the width direction. Since the receiver (15) is less frequently maintained than the system-side electric component box (81), there is no significant trouble even if the receiver (15) is arranged across the electric component box (81) from the maintenance port (86).
  • An eighth aspect of the invention is an embodiment of the sixth or seventh aspect.
  • a withdrawable bottom plate (83) on which the compressor (12) is placed is provided at a bottom of each of the plurality of support parts (70A, 70B, 70C, 70D), the withdrawable bottom plate (83) being withdrawable toward the maintenance port (86).
  • pulling the withdrawable bottom plate (83) toward the maintenance port (86) makes it possible to withdraw the compressor (12) out of the maintenance port (86) together with the withdrawable bottom plate (83).
  • a ninth aspect of the present invention is an embodiment of any one of the first to eighth aspects.
  • the single unit installed in each of the support parts (70A, 70B, 70C, 70D) includes a refrigerant cooling unit (25) which is connected to the refrigerant circuit (10) and cools the electric component (81a) in the corresponding system-side electric component box (81) with a refrigerant.
  • the refrigerant cooling unit (25) is installed in each of the support parts (70A, 70B, 70C, 70D).
  • Each of the refrigerant cooling units (25) cools the electric component (81a) in the corresponding system-side electric component box (81) with the refrigerant flowing through the refrigerant circuit (10).
  • the refrigerant cooling unit (25) is installed in the same support part (70A, 70B, 70C, 70D) together with the corresponding compressor (12) and system-side electric component box (81).
  • the distance between the refrigerant cooling unit (25) and the corresponding compressor (12) and system-side electric component box (81) is relatively shortened, and the layout of them can be commonized among the support parts (70A, 70B, 70C, 70D).
  • the refrigerant pipe around the refrigerant cooling unit (25) can be shortened, and the refrigerant pipe and its peripheral structure can be commonized among the support parts (70A, 70B, 70C, 70D).
  • the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the system-side electric component box (81) corresponding to each other are installed as an integral unit in each of the support parts (70A, 70B, 70C, 70D).
  • the refrigerant pipe, the electric wire, and their peripheral mounting structure can be commonized among the plurality of support parts (70A, 70B, 70C, 70D). This can improve the ease of assembly of the refrigeration apparatus, and can reduce the cost.
  • the compressor (12), the air heat exchanger (50, 60), the receiver (15), and the system-side electric component box (81) are configured as a single unit, another unit can be added to the refrigeration apparatus, or a unit which is no longer unnecessary can be removed.
  • a refrigerant pipe connecting the compressor (12), the receiver (15), and the air heat exchanger (50, 60), for example, does not become too long. This can simplify the layout of the refrigerant pipe.
  • the distance between the operation-side electric component box (82), which is most important for the operation of the refrigeration apparatus, and the water pump (44) can be increased. This can avoid the malfunction of the operation-side electric component box (82) caused by water leakage from the water pump (44).
  • a sufficient distance can be provided between the operation-side electric component box (82) and the water pump (44), which can avoid the malfunction of the operation-side electric component box (82) caused by water leakage from the water pump (44). This can facilitate the maintenance of the operation-side electric component box (82) and the water pump (44).
  • a sufficient distance can also be provided between the water pump (44) and the system-side electric component box (81), which can avoid the malfunction of the system-side electric component box (81) caused by water leakage from the water pump (44).
  • a sufficient distance can also be provided between the system-side electric component box (81) and the water heat exchanger (35, 36), which can avoid the malfunction of the system-side electric component box (81) caused by water leakage from the water pump (44).
  • the compressor (12) can be easily maintained through the maintenance port (86).
  • the system-side electric component box (81) can be easily maintained through the maintenance port (86).
  • the compressor (12) can be easily maintained when the withdrawable bottom plate (83) is withdrawn to the outside.
  • the refrigerant pipe and the mounting structure around the refrigerant cooling unit (25) for cooling the electric component (81a) in the system-side electric component box (81) can be simplified.
  • a refrigeration apparatus of the present invention is a cold/hot water chiller apparatus (1) which cools and heats water with a refrigerant. As shown in FIGS. 1 and 2 , the chiller apparatus (1) includes, for example, four heat source units (5A, 5B, 5C, 5D) arranged in a row.
  • the chiller apparatus (1) includes, for example, four heat source units (5A, 5B, 5C, 5D) arranged in a row.
  • the chiller apparatus (1) has four refrigerant circuits (10), a single water circuit (40), and two water heat exchangers (35, 36) connected to the refrigerant circuits (10) and the water circuit (40).
  • a refrigerant is circulated to perform a vapor compression refrigeration cycle.
  • Water is supplied from a predetermined water supply source into the water circuit (40). After being heated or cooled in the water circuit (40), water is supplied to a predetermined target of temperature regulation.
  • the number of the refrigerant circuits (10), the number of the water heat exchangers (35, 36), and the number of the water circuit (40) are merely examples, and may be any number.
  • Each of the refrigerant circuits (10) includes a heat source circuit (11) and a utilization circuit (30) connected together.
  • the four heat source circuits (11) respectively correspond to the four heat source units (5A, 5B, 5C, 5D).
  • the heat source circuits (11) and the utilization circuits (30) are configured basically in the same manner.
  • FIG. 3 shows the detailed configuration of the heat source circuit (11) of the first heat source unit (5A), and the detailed configuration of the heat source circuits (11) of the other heat source units (5B, 5C, 5D) are omitted.
  • the heat source circuits (11) are respectively provided for the corresponding heat source units (5A, 5B, 5C, 5D).
  • 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 switching valve (16) are connected to each heat source circuit (11).
  • the compressor (12) sucks and compresses a refrigerant, and 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 of the air heat exchangers (50, 60), the air transported by the fan (17) and the refrigerant exchange heat.
  • Each of the first expansion valve (13) and the second expansion valve (14) is a motor-operated valve whose opening degree is variable.
  • the first air heat exchanger (50) and the second air heat exchanger (60) adjacent to each other constitute a heat exchange section (48) in which the refrigerant and the air exchange heat.
  • the first air heat exchanger (61) and the first expansion valve (13) are connected to a first parallel circuit (18), and the second air heat exchanger (60) and the second expansion valve (14) are connected to a second parallel circuit (19).
  • the first parallel circuit (18) and the second parallel circuit (19) are parallel refrigerant circuits which are parallel with each other.
  • the receiver (15) is a hollow, vertically elongated hermetic container, and constitutes a refrigerant regulator. A surplus of the refrigerant is stored in the receiver (15).
  • the four-way switching valve (16) has first to fourth ports.
  • the first port is connected to a discharge portion of the compressor (12)
  • the second port is connected to a suction portion of the compressor (12)
  • the third port is connected to a gas-side end of each of the air heat exchangers (50, 60)
  • the fourth port is connected to a gas line (31) of the utilization circuit (30).
  • the four-way switching valve (16) switches between a state in which the first port and the third port communicate with each other and the second port and the fourth port communicate with each other (a first state indicated by solid curves in FIG. 3 ), and a state in which the first port and the fourth port communicate with each other and the second port and the third port communicate with each other (a second state indicated by broken curves in FIG. 3 ).
  • a subcooling unit (20) and a refrigerant cooling unit (25) are connected to the heat source circuit (11).
  • the subcooling unit (20) has a subcooling heat exchanger (21), an injection circuit (22), and a first motor-operated valve (23).
  • the subcooling heat exchanger (21) has a first flow path (21a) communicating with the receiver (15), and a second flow path (21b) connected to the injection circuit (22).
  • the injection circuit (22) has an inlet end connected between the receiver (15) and the subcooling unit (20), and an outlet end communicating with the suction portion of the compressor (12).
  • the first motor-operated valve (23) is connected to the injection circuit (22) upstream of the second flow path (21b).
  • the first motor-operated valve (23) is an electronic expansion valve whose opening degree is variable.
  • a liquid refrigerant flowing through the first flow path (21a) and a refrigerant flowing through the second flow path (21b) exchange heat.
  • the liquid refrigerant flowing through the first flow path (21a) is cooled in the subcooling heat exchanger (21).
  • the refrigerant cooling unit (25) has a cooling circuit (26) and a heat transfer member (27).
  • One end of the cooling circuit (26) is branched into two.
  • One of the two branches of the cooling circuit (26) is connected to the first parallel circuit (18) between the first air heat exchanger (50) and the first expansion valve (13).
  • the other of the two branches of the cooling circuit (26) is connected to the second parallel circuit (19) between the second air heat exchanger (60) and the second expansion valve (14).
  • the other end of the cooling circuit (26) is connected between the receiver (15) and the two expansion valves (13, 14).
  • a second motor-operated valve (28) which is an electronic expansion valve, for example, is connected to the cooling circuit (26).
  • the heat transfer member (27) is made of, for example, a material having a high thermal conductivity such as flat plate-shaped aluminum.
  • a heat transfer tube constituting the cooling circuit (26) is in thermal contact with one of the surfaces of the heat transfer member (27).
  • An electric component (81a) e.g., an inverter board including a switching element
  • the refrigerant in the refrigerant cooling unit (25) is used to cool the electric component (81a).
  • a first refrigerant temperature sensor (29a) is connected to the gas-side end of the first air heat exchanger (50).
  • a second refrigerant temperature sensor (29b) is connected to the gas-side end of the second air heat exchanger (60).
  • a suction pressure sensor (29c) is connected to the suction portion of the compressor (12).
  • the first refrigerant temperature sensor (29a) detects the temperature of the refrigerant that has flowed out of the first air heat exchanger (50) serving as an evaporator.
  • the second refrigerant temperature sensor (29b) detects the temperature of the refrigerant that has flowed out of the second air heat exchanger (60) serving as an evaporator.
  • the suction pressure sensor (29c) detects the pressure of the refrigerant (low pressure refrigerant) sucked into the compressor (12).
  • Each utilization circuit (30) is connected between an associated one of the heat source units (5A, 5B, 5C, 5D) and an associated one of the water heat exchangers (35, 36).
  • the utilization circuit (30) corresponding to the first heat source unit (5A) is connected to a 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 a 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 a 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 a fourth refrigerant-side flow path (36b) of the second water heat exchanger (36).
  • Each of the utilization circuits (30) has a gas line (31) and a liquid line (32).
  • the gas line (31) is connected between the gas-side 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-side end of the water heat exchanger (35, 36) and the subcooling heat exchanger (21).
  • the water circuit (40) has an inflow pipe (41), a relay pipe (42), and an outflow pipe (43) arranged in this order from the upstream side toward the downstream side.
  • the inflow pipe (41) is connected to an inlet end of a 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 a second water flow path (36c) of the second water heat exchanger (36).
  • the outflow pipe (43) is connected to an outlet end of the second water flow path (36c) of the second water heat exchanger (36).
  • a water pump (44) transporting water of the water circuit (40) is connected to the inflow pipe (41).
  • the chiller apparatus (1) has a control unit (81b) for controlling each component of the refrigerant circuit (10).
  • the control unit (81b) has, 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 a heating operation described later, the control unit (81b) controls the opening degree of the first expansion valve (13) so that an index indicating the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) approaches a target value. Further, in the heating operation, the control unit (81b) controls the opening degree of the second expansion valve (14) so that an index indicating the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) approaches a target value.
  • the chiller apparatus (1) switches between a cooling operation of cooling water and a heating operation of heating water.
  • each of the air heat exchangers (50, 60) serves as a radiator or a condenser
  • the water heat exchanger (35, 36) serves as an evaporator.
  • the refrigerant compressed in the compressor (12) is diverged into the first air heat exchanger (50) and the second air heat exchanger (60).
  • the refrigerant dissipates heat to the outdoor air to condense.
  • the refrigerant that has dissipated heat in the first air heat exchanger (50) passes through the first expansion valve (13) which is fully opened.
  • the refrigerant that has dissipated heat in the second air heat exchanger (60) passes through the second expansion valve (14) which is fully opened.
  • the refrigerant merged in the receiver (15) passes through the subcooling heat exchanger (21), has its pressure reduced by the third expansion valve (33), and then flows through the water heat exchangers (35, 36).
  • the refrigerant absorbs heat from water in the water circuit (40) to evaporate, thereby cooling the water.
  • the refrigerant evaporated in each of the water heat exchangers (35, 36) is sucked into the compressor (12) to be compressed.
  • each of the water heat exchangers (35, 36) serves as a radiator or a condenser
  • each of the air heat exchangers (50, 60) serves as an evaporator.
  • the refrigerant compressed in the compressor (12) flows through the water heat exchangers (35, 36).
  • the refrigerant dissipates heat to water in the water circuit (40) to condense, thereby heating the water.
  • each water heat exchanger (35, 36) passes through the fully-opened third expansion valve (33), the subcooling heat exchanger (21), and the receiver (15) in this order, and is diverged into the first expansion valve (13) and the second expansion valve (14).
  • the refrigerant that has had its pressure reduced by the first expansion valve (13) evaporates in the first air heat exchanger (50).
  • the refrigerant that has had its pressure reduced by the second expansion valve (14) evaporates in the second air heat exchanger (60).
  • the refrigerants evaporated in the air heat exchangers (50, 60) merge together, and the merged refrigerant is sucked into the compressor (12) and is compressed.
  • the control unit (81b) individually regulates the opening degree of the first expansion valve (13) and the opening degree of the second expansion valve (14). Specifically, the opening degree of the first expansion valve (13) is regulated so that the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) reaches a predetermined value. The opening degree of the second expansion valve (14) is regulated so that the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) reaches a predetermined value.
  • the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) is obtained, for example, from the difference between the temperature of the refrigerant detected by the first refrigerant temperature sensor (29a) and a saturation temperature corresponding to the pressure of the refrigerant detected by the suction pressure sensor (29c).
  • the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) is obtained, for example, from the difference between the temperature of the refrigerant detected by the second refrigerant temperature sensor (29b) and a saturation temperature corresponding to the pressure of the refrigerant detected by the suction pressure sensor (29c).
  • the temperature and pressure of the refrigerant can be directly used as indices of the degree of superheat.
  • the degree of superheat of the refrigerant flowing out of the first air heat exchanger (50) and the degree of superheat of the refrigerant flowing out of the second air heat exchanger (60) are individually controlled, so that the refrigerant can reliably evaporate to a predetermined degree of superheat in each of the air heat exchangers (50, 60). Specifically, this can reliably avoid the refrigerant from flowing out of each air heat exchanger (50, 60) in a wet state or in an excessively dried state. This can ensure a sufficient evaporation capacity of each of the air heat exchangers (50, 60). Further, this can reliably avoid the compressor (12) from sucking the liquid refrigerant.
  • the four heat source units (5A, 5B, 5C, 5D) are arranged in a front-to-back direction.
  • the four heat source units (5A, 5B, 5C, 5D) include a first heat source unit (5A), a second heat source unit (5B), a third heat source unit (5C), and a fourth heat source unit (5D) arranged in this order from the front side to the rear side.
  • Each of the heat source units (5A, 5B, 5C, 5D) has one upper casing (46) and one support part (70A, 70B, 70C, 70D).
  • the support parts (70A, 70B, 70C, 70D) include a first support part (70A) corresponding to the first heat source unit (5A), a second support part (70B) corresponding to the second heat source unit (5B), a third support part (70C) corresponding to the third heat source unit (5C), and a fourth support part (70D) corresponding to the fourth heat source unit (5D).
  • the support parts (70A, 70B, 70C, 70D) are connected to each other in the front-to-back direction, thereby forming an integral support (70).
  • the first support part (70A) constitutes a first end support part which is the foremost support part.
  • the fourth support part (70D) constitutes a second end support part (70A, 70B, 70C, 70D) which is the rearmost support part.
  • the second support part (70B) and the third support part (70C) respectively constitute intermediate support parts arranged between the first support part (70A) and the fourth support part (70D).
  • the number of the support parts (70A, 70B, 70C, 70D) is merely an example, and may preferably be two or more, three or more, or five or more.
  • the first and second air heat exchangers (50) and (60) constituting the heat exchange section (48) and intermediate frame parts (65A, 65B, 65C, 65D) covering the second air heat exchangers (60) are arranged between the upper casings (46) and the support parts (70A, 70B, 70C, 70D).
  • the upper casings (46) are provided on top ends of the heat source units (5A, 5B, 5C, 5D). Each of the upper casings (46) is in the shape of a flat, hollow rectangular box. Each upper casing (46) houses the fan (17) (see FIG. 4 ). A circular blow-out port (46a) is formed through the top of the upper casing (46) (see FIGS. 1 and 2 ). When the fan (17) is operated, the air flows from the outside of the two air heat exchangers (50, 60) to the interior of the two air heat exchangers (50, 60). The air flows upward through the interior of the two air heat exchangers (50, 60), and is blown upward from the blow-out port (46a).
  • the first air heat exchanger (50) is provided for each of the heat source units (5A, 5B, 5C, 5D), or each of the support parts (70A, 70B, 70C, 70D).
  • Each of the first air heat exchangers (50) has first to third side surfaces (51, 52, 53) through which the air passes.
  • the first to third side surfaces (51, 52, 53) serve as a ventilation portion through which the air passes.
  • the first side surface (51) and the second side surface (52) are a pair of side surfaces facing each other.
  • the first side surface (51) serves as a front surface of the first air heat exchanger (50)
  • the second side surface (52) serves as a rear surface of the first air heat exchanger (50).
  • the third side surface (53) is a center side surface continuously extending between the first and second side surfaces (51) and (52), and serves as a left side surface of the first air heat exchanger (50).
  • the four first air heat exchangers (50) are arranged adjacent to each other such that the third side surfaces (53) are aligned in a horizontal direction (front-to-back direction).
  • each first air heat exchanger (50) is configured such that the side surfaces (51, 52, 53) are arranged in a substantially U shape when viewed in plan.
  • the first air heat exchanger (50) has an open surface (54) where the side surfaces (51, 52, 53) are not provided.
  • the first air heat exchanger (50) is a vertical air heat exchanger whose side surfaces (51, 52, 53) stand upright. No other member is provided around the side surfaces (51, 52, 53) of the first air heat exchanger (50).
  • the air around the first air heat exchanger (50) passes through the side surfaces (51, 52, 53) to flow into the first air heat exchanger (50).
  • the first side surface (51) and the second side surface (52) are arranged substantially in the shape of V when viewed in plan. That is, the first side surface (51) and the second side surface (52) are in a reverse tapered arrangement such that a distance therebetween increases toward their lateral ends. In other words, the first side surface (51) and the second side surface (52) are inclined outward (front-to-back direction) so as to form an obtuse angle with the third side surface (53). That is, as shown in FIG. 5 , in the first air heat exchanger (50), a virtual plane P1 extending along the first side surface (51) and a virtual plane P3 extending along the third side surface (53) form an angle ⁇ 1 which is larger than 90 degrees. Further, in the first air heat exchanger (50), a virtual plane P2 extending along the second side surface (52) and the virtual plane P3 extending along the third side surface (53) form an angle ⁇ 2 which is larger than 90 degrees.
  • a circulation space (55) through which the air can flow is formed between a pair of first air heat exchangers (50) adjacent to each other in the front-to-back direction.
  • the circulation space (55) is widened toward the third side surface (53) when viewed in plan.
  • the circulation space (55) with a widened opening allows the air to easily flow into the circulation space (55).
  • the second air heat exchanger (60) is arranged to oppose to the open surface (54) on the right side of the first air heat exchanger (50).
  • the second air heat exchanger (60) is substantially in the shape of a flat plate as a whole.
  • the second air heat exchanger (60) has a sloping surface (61) which is substantially flat and inclined in the right-to-left direction on the whole area thereof.
  • the second air heat exchanger (60) or the sloping surface (61) is inclined to be away from the open surface (54) of the first air heat exchanger (50) toward a top end thereof.
  • the top end of the second air heat exchanger (60) is substantially at the same height as a top end of the first air heat exchanger (50).
  • a bottom end of the second air heat exchanger (60) is substantially at the same height as a bottom end of the first air heat exchanger (50).
  • the second air heat exchanger (60) is arranged to cover the entire open surface (54) of the first air heat exchanger (50).
  • the number (path number) of the refrigerant flow paths (C) arranged in a direction of air passage is three.
  • the number (path number) of refrigerant flow paths (C) arranged in the air passage direction (the width direction of a second fin (62)) is four. That is, the second air heat exchanger (60) includes a larger number of refrigerant flow paths (C) than the first air heat exchanger (50).
  • the first fin (56) of the first air heat exchanger (50) has approximately the same width as the second fin (62) of the second air heat exchanger (60).
  • the second air heat exchanger (60) is obliquely arranged so that its outflow surface faces the fan (17). As compared with the case where the second air heat exchanger (60) is placed upright, the outflow surface of the second air heat exchanger (60) according to this embodiment is located closer to the fan (17), so that the air can flow more smoothly. This means that the second air heat exchanger (60) arranged obliquely can reduce a resistance of a flow path between the second air heat exchanger (60) and the fan (17).
  • the second air heat exchanger (60) when the second air heat exchanger (60) is provided with a larger number of refrigerant flow paths (C) than the first air heat exchanger (50), the total heat transfer area of the second air heat exchanger (60) can be increased while sufficiently ensuring the air flow volume of the second air heat exchanger (60).
  • the second air heat exchanger (60) may have the same number of (e.g., three) refrigerant flow paths (C) as the first air heat exchanger (50).
  • the four intermediate frame parts (65A, 65B, 65C, 65D) include a first intermediate frame part (65A) corresponding to the first heat source unit (5A), a second intermediate frame part (65B) corresponding to the second heat source unit (5B), a third intermediate frame part (65C) corresponding to the third heat source unit (5C), and a fourth intermediate frame part (65D) corresponding to the fourth heat source unit (5D).
  • the intermediate frame parts (65A, 65B, 65C, 65D) are disposed to cover the second air heat exchangers (60).
  • the four intermediate frame parts (65A, 65B, 65C, 65D) each have a frame plate (66) which is inclined along the second air heat exchanger (60).
  • the frame plate (66) is formed in a frame shape covering the second air heat exchanger (60) from the outside, and has a vent (66a) formed in an inner portion thereof (see FIG. 1 ). Specifically, the sloping surface (61) of the second air heat exchanger (60) is exposed outside through the vent (66a) of the frame plate (66).
  • a first shielding plate (67) is formed on the front side of the first intermediate frame part (65A).
  • the first shielding plate (67) extends from the front end of the frame plate (66) of the first intermediate frame part (65A) to the vicinity of the end of the first side surface (51) of the first air heat exchanger (50).
  • the first shielding plate (67) blocks the air from flowing out of a space between the first side surface (51) of the first air heat exchanger (50) and the second air heat exchanger (60).
  • the first shielding plate (67) is in the shape of an inverted trapezoid or a right-angled triangle whose width is narrowed downward.
  • a second shielding plate (68) having substantially the same shape as the first shielding plate (67) is formed on the back side of the fourth intermediate frame part (65D).
  • the second shielding plate (68) extends from the rear end of the frame plate (66) of the fourth intermediate frame part (65D) to the vicinity of the end of the second side surface (52) of the first air heat exchanger (50).
  • the second shielding plate (68) blocks the air from flowing out of a space between the second side surface (52) of the first air heat exchanger (50) and the second air heat exchanger (60).
  • the second shielding plate (68) is in the shape of an inverted trapezoid or a right-angled triangle whose width is narrowed downward.
  • an intermediate shielding plate (69) having substantially the same shape as the first and second shielding plates (67) and (68) is provided.
  • the intermediate shielding plates (69) are positioned and shaped to have a plane of projection of substantially the same shape as the first shielding plate (67) and the second shielding plate (68) when viewed from the front.
  • Each of a plurality of (three in this example) intermediate shielding plates (69) has a right end fixed to the lateral end of the adjacent frame plate (66).
  • the left end of each intermediate shielding plate (69) is in the vicinity of the ends of a pair of the side surfaces (51, 52) of the first air heat exchangers (50) adjacent to each other.
  • the intermediate shield plate (69) blocks the air in one of an adjacent pair of the heat source units (5A, 5B, 5C, 5D) from flowing into the other heat source unit (5A, 5B, 5C, 5D).
  • the support (70) is formed in a substantially rectangular parallelepiped shape which is elongated in the front-rear direction.
  • the support (70) has first and second side 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 side frame (71a) is disposed at the right end of the support (70), and the second side frame (71b) is disposed at the left end of the support (70).
  • the first side frame (71a) and the second side frame (71b) are formed in a rod shape extending in the front-to-back direction to be parallel to each other.
  • the first vertical frame (72a) is fixed to a front end of the first side frame (71a), and the second vertical frame (72b) is fixed to a rear end of the first side frame (71a).
  • the third vertical frame (72c) is fixed to a front end of the second side frame (71b), and the fourth vertical frame (72d) is fixed to a rear end of the second side frame (71b).
  • the first to third intermediate frames (73a, 73b, 73c) are fixed to an intermediate portion of the first side frame (71a), and arranged in the front-to-back direction.
  • the fourth to sixth intermediate frames (73d, 73e, 73f) are fixed to an intermediate portion of the second side frame (71b), and arranged in the front-to-back direction.
  • the first to sixth intermediate frames (73f) are formed in a vertical rod shape extending upward from the intermediate portion of each of the side frames (71a, 71b), and arranged in parallel to each other.
  • One base (74) is provided at the top end of the support (70).
  • the base (74) is supported by the first to fourth vertical frames (72d) and the first to sixth intermediate frames (73f).
  • the base (74) is in the shape of a plate or a rectangular parallelepiped elongated in the front-to-back direction, and extends in parallel with the side frames (71a, 71b).
  • the two air heat exchangers (50, 60) (heat exchange section (48)) and the intermediate frame parts (65A, 65B, 65C, 65D) are disposed on a top surface of the base (74).
  • a front panel (75) is provided to stand upright on a front surface of the support (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 to stand upright on a rear surface of the support (70).
  • the rear panel (76) is detachably attached to the second vertical frame (72b) and the fourth vertical frame (72d).
  • a first support side plate (77) is formed on the right side of the support (70).
  • the first support side plate (77) is located below the open surfaces (54) of the first air heat exchangers (50).
  • the first support side plate (77) includes first to fourth vertical 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).
  • a second support side plate (78) is formed on the left side of the support (70).
  • the second support side plate (78) is located below the first air heat exchangers (50).
  • the second support side plate (78) includes fifth to eighth vertical 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).
  • First to fourth machine chambers are defined between the first and second support side plates (77) and (78) of the support (70).
  • the first to fourth machine chambers (S1, S2, S3, S4) are rectangular parallelepiped spaces, and arranged in a row in the front-to-back direction.
  • the first machine chamber (S1) is defined between the first side panel (77a) and the fifth side panel (78a)
  • the second machine chamber (S2) is defined between the second side panel (77b) and the sixth side panel (78b).
  • the third machine chamber (S3) is defined between the third side panel (77c) and the seventh side panel (78c)
  • the fourth machine chamber (S4) is defined between the fourth side panel (77d) and the eighth side panel (78d).
  • components defining the first machine chamber (S1) constitute the first support part (70A)
  • components defining the second machine chamber (S2) constitute the second support part (70B)
  • components defining the third machine chamber (S3) constitute the third support part (70C)
  • components defining the fourth machine chamber (S4) constitute the fourth support part (70D).
  • the first and second side frames (71a, 71b) and the base (74) are common components defining the machine chambers (S1, S2, S3, S4) of the support parts (70A, 70B, 70C, 70D).
  • the first and second side frames (71a, 71b) and the base (74) may be divided into portions respectively corresponding to the machine chambers (S1, S2, S3, S4) or the support parts (70A, 70B, 70C, 70D). In this way, each of the support parts (70A, 70B, 70C, 70D) can be independently moved (e.g., lifted) together with an associated one of the heat source units (5A, 5B, 5C, 5D).
  • each leg (79) extends horizontally from the bottom end of the first support side plate (77) to the right. That is, each leg (79) has a protruding portion located below the second air heat exchangers (60) or the intermediate frame parts (65A, 65B, 65C, 65D).
  • the number of the legs (79) is not limiting, and may be three or more.
  • the entire outer shape of the chiller apparatus (1) is formed into an inverted L shape when viewed from the front.
  • the second air heat exchanger (60) and its peripheral components overhang outward (to the right) from the second support side plate (78). Therefore, there is a possibility that the chiller apparatus (1) falls down to the right.
  • the legs (79) extend from the bottom end of the support (70) in the direction in which the second air heat exchanger (60) overhangs, so that the risk of the fall can be avoided with reliability.
  • FIG. 8 does not show a refrigerant pipe of the refrigerant circuit (10).
  • each machine chamber (S1, S2, S3, S4) the compressor (12), the receiver (15), and a system-side electric component box (81), one each, are installed.
  • Each system-side electric component box (81) houses an electric component (81a), such as an inverter board, for supplying electric power to the corresponding compressor (12).
  • Each machine chamber (S1, S2, S3, S4) is provided with the refrigerant cooling unit (25), (not shown in FIG. 8 ), for cooling the electric component (81a) in the system-side electric component box (81).
  • the system-side electric component box (81) houses a control unit (81b) for controlling the first expansion valve (13) and the second expansion valve (14) of the corresponding refrigerant circuit (10).
  • An operation-side electric component box (82) is installed in the first machine chamber (S1).
  • An operation unit (82a) for operating the refrigeration apparatus is installed in the operation-side electric component box (82).
  • the first water heat exchanger (35) is installed in the second machine chamber (S2).
  • the second water heat exchanger (36) is installed in the third machine chamber (S3).
  • the water pump (44) is installed in the fourth machine chamber (S4).
  • a withdrawable bottom plate (83) is provided for each machine chamber (S1, S2, S3, S4).
  • the withdrawable bottom plate (83) is in the form of a rectangle which is slightly elongated in the front-to-back direction, and constitutes the bottom of the corresponding machine chamber (S1, S2, S3, S4).
  • the withdrawable bottom plate (83) is attached to the support (70) to be slidable toward a maintenance space (85) formed on the right side of the support (70).
  • the compressor (12), the receiver (15), the system-side electric component box (81), and the operation-side electric component box (82) are installed.
  • the compressor (12) is arranged at a center portion of the first machine chamber (S1) in the front-to-back direction near the first support side plate (77) (near the maintenance space (85)).
  • the operation-side electric component box (82) is arranged on the front side of the compressor (12) (toward the front panel (75)).
  • the receiver (15) is arranged on the back side of the compressor (12) (toward the rear surface panel (76) or the fourth machine chamber (S4)).
  • the system-side electric component box (81) is arranged on the left side of the receiver (15).
  • the compressor (12), the receiver (15), the system-side electric component box (81), and the first water heat exchanger (35) are installed in the second machine chamber (S2).
  • the system-side electric component box (81), the compressor (12), and the first water heat exchanger (35) are arranged in this order from the front side to the rear side of the second machine chamber (S2) near the first support side plate (77).
  • the compressor (12) is arranged between the system-side electric component box (81) and the first water heat exchanger (35).
  • a portion of the relay pipe (42) and a portion of the outflow pipe (43) are arranged in the second machine chamber (S2).
  • the relay pipe (42) and the outflow pipe (43) are arranged near the second support side plate (78) of the second machine chamber (S2).
  • the compressor (12), the receiver (15), the system-side electric component box (81), and the second water heat exchanger (36) are installed.
  • the system-side electric component box (81), the compressor (12), and the second water heat exchanger (36) are arranged in this order from the front side to the rear side of the third machine chamber (S3) near the first support side plate (77).
  • the compressor (12) is arranged between the system-side electric component box (81) and the second water heat exchanger (36).
  • a portion of the inflow pipe (41), a portion of the relay pipe (42), and a portion of the outflow pipe (43) are arranged.
  • the inflow pipe (41), the relay pipe (42), and the outflow pipe (43) are arranged near the second support side plate (78) of the third machine chamber (S3).
  • the receiver (15) is arranged between the relay and outflow pipes (42, 43) and the system-side electric component box (81).
  • the compressor (12), the receiver (15), the system-side electric component box (81), and the water pump (44) are installed.
  • the system-side electric component box (81), the compressor (12), and the water pump (44) are arranged in this order from the front side to the rear side of the fourth machine chamber (S4) near the first support side plate (77).
  • the compressor (12) is arranged between the system-side electric component box (81) and the water pump (44).
  • a portion of the inflow pipe (41) and a portion of the outflow pipe (43) are arranged.
  • the inflow pipe (41) and the outflow pipe (43) are arranged near the second support side plate (78) of the fourth machine chamber (S4).
  • the receiver (15) is arranged between the inflow and outflow pipes (41, 43) and the system-side electric component box (81).
  • An inlet portion of the inflow pipe (41) extends from the fourth machine chamber (S4) to the outside through the second support side surface (fourth side panel (77d)).
  • An outlet portion of the outflow pipe (43) extends from the fourth machine chamber (S4) to the outside through the rear panel (76).
  • the front panel (75) and the first support side plate (77) of the chiller apparatus (1) constitute a main maintenance surface.
  • the operation-side electric component box (82) is exposed to the outside through a front maintenance port (86). This makes the operation-side electric component box (82) easily accessible.
  • the compressors (12) in the machine chambers (S1, S2, S3, S4) and the system-side electric component boxes (81) in the second to fourth machine chambers (S4) are exposed to the outside through a side maintenance port (87).
  • each of the withdrawable bottom plates (83) can be withdrawn toward the maintenance space (85).
  • work can be performed after the compressors (12) and other components are withdrawn to the maintenance space (85).
  • a plurality of chiller apparatuses (1) may be arranged in the right-to-left direction.
  • the chiller apparatuses (1) are arranged such that the first support side plate (77) of one of an adjacent pair of the chiller apparatuses (1) faces the second support side plate (78) of the other chiller apparatus (1).
  • a relatively wide maintenance space (85) can be formed between the adjacent supports (70) below the second air heat exchanger (60). This makes it possible to perform the maintenance of the components while reducing the distance between the plurality of chiller apparatuses (1).
  • the compressor (12), the two air heat exchangers (50, 60), and the receiver (15) which are connected to the same refrigerant circuit (10), and the system-side electric component box (81) corresponding to the compressor (12) are collectively arranged as a single unit.
  • the subcooling unit (20) and the refrigerant cooling unit (25) connected to the same refrigerant circuit (10) are also collectively arranged as a single unit. Therefore, the four support parts (70A, 70B, 70C, 70D) are the same or similar in the refrigerant pipe, electric wire, and their peripheral mounting structure. Thus, these components can be commonized. This can simplify the configuration of the refrigeration apparatus (1), and achieve cost reduction.
  • the second support part (70B) and the third support part (70C) are arranged between the first support part (70A) in which the operation-side electric component box (82) is installed and the fourth support part (70D) in which the water pump (44) is installed. This can increase the distance between the operation-side electric component box (82) and the water pump (44). Further, in the fourth support part (70D), the compressor (12) is arranged between the system-side electric component box (81) and the water pump (44). This can increase the distance between the system-side electric component box (81) and the water pump (44).
  • the compressor (12) is arranged between the system-side electric component box (81) and the water heat exchanger (35, 36). This can increase the distance between the system-side electric component box (81) and the water heat exchanger (35, 36).
  • the water heat exchanger (35, 36) and the water pump (44) can be arranged inside the support (70) while avoiding the malfunction of the operation-side electric component box (82) and the system-side electric component box (81) due to leakage of water from the water heat exchanger (35, 36) and the water pump (44).
  • the compressors (12) and the system-side electric component boxes (81) in the second support part (70B), the third support part (70C), and the fourth support part (70D) can be exposed to the outside through the side maintenance port (87).
  • This can facilitate the maintenance of the compressors (12) and the system-side electric component boxes (81).
  • the maintenance space (85) reliably formed outside the side maintenance port (87) makes the compressors (12) and the system-side electric component boxes (81) easily accessible.
  • the withdrawable bottom plate (83) is withdrawn into the maintenance space (85) through the side maintenance port (87), the compressors (12) and other components can be maintained more easily.
  • removing the front panel (75) makes the operation-side electric component box (82) easily accessible. This is also true when a plurality of refrigeration apparatuses (1) are arranged side by side as shown in FIG. 9 .
  • the support (70) may include only two support parts (70A, 70D).
  • the operation-side electric component box (82) may be disposed in the support part (70A) (the first end support part), and the water pump (44) may be disposed in the support part (70D) (the second end support part).
  • the distance between the operation-side electric component box (82) and the water pump (44) can be increased.
  • the present invention is useful for a refrigeration apparatus.
EP17855507.4A 2016-09-30 2017-08-24 Refrigeration device Withdrawn EP3502592A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016193032A JP6365615B2 (ja) 2016-09-30 2016-09-30 冷凍装置
PCT/JP2017/030398 WO2018061549A1 (ja) 2016-09-30 2017-08-24 冷凍装置

Publications (1)

Publication Number Publication Date
EP3502592A1 true EP3502592A1 (en) 2019-06-26

Family

ID=61759623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17855507.4A Withdrawn EP3502592A1 (en) 2016-09-30 2017-08-24 Refrigeration device

Country Status (5)

Country Link
US (1) US20200033012A1 (zh)
EP (1) EP3502592A1 (zh)
JP (1) JP6365615B2 (zh)
CN (1) CN109791011A (zh)
WO (1) WO2018061549A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4012292A4 (en) * 2019-08-07 2022-08-10 Mitsubishi Electric Corporation REFRIGERATION UNIT AND AIR CONDITIONING

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6369518B2 (ja) * 2016-09-30 2018-08-08 ダイキン工業株式会社 冷凍装置
JP7313796B2 (ja) * 2018-01-12 2023-07-25 三菱重工サーマルシステムズ株式会社 熱交換ユニット
WO2020035945A1 (ja) * 2018-08-17 2020-02-20 三菱電機株式会社 フリークーリングユニット
US11137151B2 (en) * 2018-08-31 2021-10-05 Gree Electric Appliances, Inc. Of Zhuhai Embedded type air conditioner outdoor unit and an air conditioner
WO2021024412A1 (ja) * 2019-08-07 2021-02-11 三菱電機株式会社 チリングユニットおよび空気調和装置
CN114251878A (zh) * 2020-09-23 2022-03-29 江森自控科技公司 Hvac系统的冷凝器布置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322679Y2 (zh) * 1985-06-29 1991-05-17
CN102472536A (zh) * 2009-07-28 2012-05-23 东芝开利株式会社 热源单元
JP2012087954A (ja) * 2010-10-15 2012-05-10 Toshiba Carrier Corp 熱源装置
JP2013079735A (ja) 2011-09-30 2013-05-02 Daikin Industries Ltd 室外機及び冷凍装置
CN102997510B (zh) * 2013-01-03 2016-01-20 刘玉岭 应用蒸发式冷凝器的压缩冷凝机组、冷水机组和制冷空调机组以及其控制方法
JP5884784B2 (ja) * 2013-04-12 2016-03-15 ダイキン工業株式会社 チラー装置
JP2016090166A (ja) * 2014-11-07 2016-05-23 日立アプライアンス株式会社 冷凍装置
JP6497066B2 (ja) * 2014-12-25 2019-04-10 ダイキン工業株式会社 冷却装置および空気調和装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4012292A4 (en) * 2019-08-07 2022-08-10 Mitsubishi Electric Corporation REFRIGERATION UNIT AND AIR CONDITIONING

Also Published As

Publication number Publication date
US20200033012A1 (en) 2020-01-30
WO2018061549A1 (ja) 2018-04-05
JP2018054249A (ja) 2018-04-05
CN109791011A (zh) 2019-05-21
JP6365615B2 (ja) 2018-08-01

Similar Documents

Publication Publication Date Title
EP3502592A1 (en) Refrigeration device
EP3502586B1 (en) Refrigeration device
US11940162B2 (en) Integrated air conditioner
KR101397217B1 (ko) 열원 유닛
EP2905549B1 (en) Outdoor unit control for air conditioner
JP5310887B2 (ja) 室外機及び冷凍装置
US8387410B2 (en) Air cooling type chiller
EP2803914A1 (en) Air conditioner
JP6535499B2 (ja) 冷凍サイクル装置
EP3514457B1 (en) Heat source unit
WO2014175109A1 (ja) 空気調和機
JP6592932B2 (ja) 冷媒回路装置
KR20110012375A (ko) 냉장고
KR20160077835A (ko) 공기 조화기의 실외기
JP6587477B2 (ja) 冷蔵庫
JP2016186738A (ja) 自動販売機
EP3799615B1 (en) Refrigerator
WO2023135628A1 (ja) 冷凍冷蔵庫
JP7336627B2 (ja) 除湿装置
JP5481824B2 (ja) 自動販売機
JP2024049918A (ja) 空気調和機の室外機
JP5900457B2 (ja) 室外ユニット
KR100986467B1 (ko) 버스용 천정형 에어컨 장치
JP2024049731A (ja) 空気調和機の室外機
JP2021139581A (ja) 床置き型空調室内機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20190320

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20191009