WO2023053280A1 - チリングユニット及びチリングユニットシステム - Google Patents

チリングユニット及びチリングユニットシステム Download PDF

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Publication number
WO2023053280A1
WO2023053280A1 PCT/JP2021/035902 JP2021035902W WO2023053280A1 WO 2023053280 A1 WO2023053280 A1 WO 2023053280A1 JP 2021035902 W JP2021035902 W JP 2021035902W WO 2023053280 A1 WO2023053280 A1 WO 2023053280A1
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WO
WIPO (PCT)
Prior art keywords
machine room
unit
heat exchanger
chilling
panel
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.)
Ceased
Application number
PCT/JP2021/035902
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
仁隆 門脇
純一 宮井
祐二 垂水
拓也 伊藤
友哉 木村
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2021/035902 priority Critical patent/WO2023053280A1/ja
Priority to JP2023550855A priority patent/JP7603836B2/ja
Priority to US18/293,498 priority patent/US12607384B2/en
Publication of WO2023053280A1 publication Critical patent/WO2023053280A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • 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
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/202—Mounting a compressor unit therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers

Definitions

  • the present disclosure relates to a chilling unit that constitutes an air conditioner, a heat pump water heater, a refrigeration system, or the like, and a chilling unit system having a plurality of such chilling units.
  • the chilling unit of Patent Document 1 includes a housing consisting of an upper housing and a lower housing, an air heat exchanger and a blower are housed in the upper housing, and a compressor and a heat exchanger are , housed in the lower housing.
  • the upper housing is formed so that the left and right side surfaces in a front view are slanted so that the width thereof decreases downward, and the lower housing is provided continuously with the lower surface of the upper housing.
  • a plurality of chilling units of Patent Document 1 may be arranged side by side.
  • the chilling units are placed so close together that at least the wide upper housing does not touch adjacent chilling units to minimize installation space.
  • a space is created between the lower housings of the adjacent chilling units, and is used as a service space for inspecting or repairing equipment such as the compressor, control box and accumulator in the lower housing.
  • the width of the upper part of the upper housing is reduced, and the width of the lower housing is made as small as possible to secure the service space. Therefore, there is no room in the space inside the lower housing, and the devices inside the lower housing partially come into contact with or come close to the panel forming the outer shell of the lower housing.
  • An object of the present disclosure is to provide a chilling unit and a chilling unit system that can ensure compatibility between a plurality of panels forming the outer shell of the lower housing without increasing the installation area.
  • the chilling unit according to the present disclosure is formed in a long box shape, and constitutes a refrigerant circuit together with a machine room unit that accommodates a compressor and a heat exchanger inside, and the compressor and the heat exchanger, and a plurality of air heat exchangers mounted on the upper part of the machine room unit, wherein, of the plurality of air heat exchangers, a pair of air heat exchangers arranged to face each other in the transverse direction of the machine room unit.
  • the air heat exchanger is disposed at an angle such that the distance between upper ends on the far side from the machine room unit is larger than the distance between the lower ends on the side closer to the machine room unit, and the machine room
  • the machine room panel which constitutes the lateral side of the unit, is connected to a panel body located in the center of the machine room panel and around the panel body, and is fixed in contact with the machine room unit. and a fixing portion that is attached to the fixing portion, and the panel main body is arranged to protrude toward the outside of the machine room unit with respect to the fixing portion.
  • a chilling unit system is a chilling unit system configured by installing a plurality of the chilling units described above, wherein the machine room units of the two adjacent chilling units in the lateral direction is set to 350 mm or more.
  • the chilling unit since the flat plate-shaped panel main body in the central part of the panel covering the machine room unit is positioned so as to protrude from the fixed part, the arrangement area of the equipment inside the machine room unit is reduced. can be taken large. Even if the heat insulating member is fixed to the panel body, it is not necessary to form the heat insulating member according to the equipment inside the machine room unit. The time and effort for management during the removal and attachment work of is reduced.
  • FIG. 1 is a perspective view of a chilling unit 100 according to Embodiment 1.
  • FIG. 2 is a side view of the chilling unit 100 according to Embodiment 1.
  • FIG. 2 is a front view of the chilling unit 100 according to Embodiment 1.
  • FIG. It is a conceptual diagram which shows roughly the structure of the machine room unit 4 shown in FIG.
  • FIG. 2 is a plan view schematically showing the internal structure of the machine room unit 4 shown in FIG. 1; 4 is a conceptual diagram showing the relationship between the air heat exchanger 1 and the machine room unit 4 of the chilling unit 100 according to Embodiment 1.
  • FIG. 4 is a front view of a chilling unit 100L that is a modification of the chilling unit 100 according to Embodiment 1; 4 is an enlarged perspective view of the periphery of the machine room panel 45b of the chilling unit 100 according to Embodiment 1.
  • FIG. 4 is a cross-sectional view of the machine room unit 4 of the chilling unit 100 according to Embodiment 1.
  • FIG. It is a three-sided view of a single machine room panel 45b. It is a rear view of the machine room panel 45b.
  • 1 is a perspective view of a chilling unit system 110 according to Embodiment 1.
  • FIG. 2 is a conceptual diagram showing the relationship between two adjacent chilling units 100 that constitute the chilling unit system 110 according to Embodiment 1.
  • FIG. 4 is an explanatory diagram of the relationship between the line of sight of an operator and the lower connection portion 47A in Embodiment 1.
  • FIG. 1 is a perspective view of a chilling unit 100 according to Embodiment 1.
  • FIG. FIG. 2 is a side view of the chilling unit 100 according to Embodiment 1.
  • FIG. FIG. 3 is a front view of the chilling unit 100 according to Embodiment 1.
  • FIG. 3 is a front view of the chilling unit 100 as viewed in the direction of the white arrow in FIG. An overview of the chilling unit 100 will be described with reference to FIGS. 1 to 3.
  • the X-axis indicates the longitudinal direction of the chilling unit 100
  • the Y-axis indicates the width direction or left-right direction of the chilling unit 100
  • the Z-axis indicates the vertical direction of the chilling unit 100. It is a thing. Further, in principle, the positional relationship (for example, vertical relationship, etc.) between constituent members in the specification is for when the chilling unit 100 is installed in a usable state.
  • the chilling unit 100 is used, for example, as a heat source device for a chiller.
  • the chilling unit 100 is supplied with a heat transfer fluid such as water or antifreeze from a load side unit (not shown), the heat transfer fluid is cooled or heated in the chilling unit 100, and then sent to the load side unit.
  • the chilling unit 100 supplies cold heat or hot heat to the load side unit by circulating the heat transfer fluid in this way.
  • the chilling unit 100 is formed in an elongated shape, and has an air heat exchanger 1, a fan 5, and a machine room unit 4, which constitute a refrigeration cycle on the heat source side.
  • Air heat exchanger 1 The air heat exchanger 1 exchanges heat between a refrigerant flowing inside and outside air, and functions as an evaporator or a condenser.
  • the air heat exchanger 1 has multiple heat transfer tubes 7 and multiple fins 8 .
  • the air heat exchanger 1 is, for example, a parallel flow type heat exchanger, and has a pair of headers (not shown), a plurality of heat transfer tubes 7 and a plurality of fins 8 .
  • the heat transfer tubes 7 are, for example, aluminum flat tubes, and the fins 8 are, for example, corrugated fins. Note that the air heat exchanger 1 is not limited to a parallel flow type heat exchanger.
  • the air heat exchanger 1 may be, for example, a fin-and-tube heat exchanger in which a plurality of plate-like fins 8 are arranged in parallel and the heat transfer tubes 7 penetrate the plurality of fins 8 .
  • the air heat exchanger 1 has four air heat exchangers 1, an air heat exchanger 1A, an air heat exchanger 1B, an air heat exchanger 1C, and an air heat exchanger 1D.
  • the air heat exchanger 1A is the first air heat exchanger
  • the air heat exchanger 1B is the second air heat exchanger
  • the air heat exchanger 1C is the third air heat exchanger
  • the air heat exchanger 1D is the fourth air heat exchanger.
  • the air heat exchanger 1A and the air heat exchanger 1B are arranged facing each other.
  • a pair of air heat exchangers 1 consisting of an air heat exchanger 1A and an air heat exchanger 1B has an upper space SP1 between the upper ends 11a on the side farther from the machine room unit 4 than the lower end on the side closer to the machine room unit 4.
  • 11b are inclined so as to be larger than the lower space SP2 between the 11b. That is, as shown in FIG. 3, the air heat exchanger 1A and the air heat exchanger 1B are arranged so as to form a V shape when viewed from the front of the chilling unit 100. As shown in FIG.
  • the air heat exchanger 1C and the air heat exchanger 1D facing each other in the lateral direction (Y-axis direction) of the machine room unit 4 are similarly arranged to be inclined in a V shape.
  • the inclination angle ⁇ of the air heat exchanger 1A is, for example, 65° to 80°.
  • the air heat exchanger 1B, the air heat exchanger 1C, and the air heat exchanger 1D are arranged with an inclination angle of 65° to 80°, like the air heat exchanger 1A.
  • a top frame 60 is provided above the air heat exchanger 1A, the air heat exchanger 1B, the air heat exchanger 1C, and the air heat exchanger 1D.
  • the top frame 60 constitutes the top wall of the chilling unit 100 .
  • the top frame 60 is fixed to the machine room unit 4 by support columns 70 .
  • the support columns 70 are provided at both ends of the chilling unit 100 in the longitudinal direction (X-axis direction).
  • Two support columns 70 are arranged at each end in the longitudinal direction (X-axis direction) of the chilling unit 100 .
  • the two support columns 70 are arranged so as to extend in the vertical direction, and are spaced apart from each other in the lateral direction (Y-axis direction).
  • the support column 70 has an upper end fixed to the top frame 60 and a lower end fixed to the machine room unit 4 .
  • a side panel 50 is arranged on one side of the chilling unit 100 in the lateral direction (Y-axis direction) of the chilling unit 100 so as to cover the space between the air heat exchangers 1A and 1C. ing.
  • the side panel 50 is a plate-like panel formed in a substantially rectangular shape.
  • the side panel 50 is provided so as to extend in the vertical direction (Z-axis direction) and the longitudinal direction (X-axis direction).
  • the side panel 50 is arranged along the slope of the air heat exchanger 1 described above.
  • a side panel 50 is also provided on the other side surface of the chilling unit 100 so as to cover the space between the air heat exchangers 1B and 1D. are placed.
  • a side panel 51 is arranged on one side surface of the chilling unit 100 in the longitudinal direction (X-axis direction) of the chilling unit 100 so as to cover the space between the air heat exchangers 1A and 1B.
  • the side panel 51 is a plate-like panel formed in a substantially trapezoidal shape.
  • the side panel 51 has an upper edge 51a longer than a lower edge 51b.
  • the side panel 51 is provided so as to extend in the vertical direction (Z-axis direction) and the lateral direction (Y-axis direction).
  • the side panel 51 is arranged in the longitudinal direction (X-axis direction) of the chilling unit 100 so as to partially cover the ends of the air heat exchangers 1A and 1B.
  • a side panel 51 is also arranged on the other side of the chilling unit 100 in the longitudinal direction (X-axis direction) of the chilling unit 100 so as to cover the space between the air heat exchangers 1C and 1D. It is The side panel 51 is arranged in the longitudinal direction (X-axis direction) of the chilling unit 100 so as to partially cover the ends of the air heat exchangers 1C and 1D.
  • the top frame 60 is provided with the fan 5 described above.
  • the fan 5 forms a flow of air that passes through the air heat exchanger 1 and is discharged from an air outlet 14 such as a bell mouth 6A, which will be described later.
  • the fan 5 is a blowing means having an axial fan, and generates an air flow for efficiently performing heat exchange in the air heat exchanger 1 .
  • the fan 5 has four fans 5, a fan 5A, a fan 5B, a fan 5C, and a fan 5D.
  • the top frame 60 is provided with a bell mouth 6A, a bell mouth 6B, a bell mouth 6C, and a bell mouth 6D.
  • a fan 5A, a fan 5B, a fan 5C, and a fan 5D are arranged inside the bell mouth 6A, the bell mouth 6B, the bell mouth 6C, and the bell mouth 6D, respectively.
  • An air outlet 14 is formed at the upper end of the bell mouth 6A, bell mouth 6B, bell mouth 6C, and bell mouth 6D.
  • the chilling unit 100 is of a "top-flow configuration" in which the blowing side of the fan 5 faces upward.
  • the air outlets 14 of the bell mouth 6A, the bell mouth 6B, the bell mouth 6C, and the bell mouth 6D are each provided with a fan guard 17, and the fan 5A, the fan 5B, the fan 5C, and the fan 5D are each provided with a fan. It is covered with a guard 17.
  • FIG. 4 is a conceptual diagram schematically showing the structure of the machine room unit 4 shown in FIG.
  • the space occupied by the machine room unit 4 in FIGS. 1 and 4 is indicated by dotted lines.
  • the structure of the machine room unit 4 will be described with reference to FIGS. 1 and 4.
  • FIG. The machine room unit 4 is formed in the shape of an elongated box, and is formed in the shape of a rectangular parallelepiped.
  • the machine room unit 4 has a rectangular parallelepiped frame 40 and side walls 45 covering the space between the frames 40 .
  • the frame 40 has an underframe 41 , gate posts 42 , intermediate posts 43 and upper beams 44 .
  • the gatepost 42 has four gateposts 42: a gatepost 42A, a gatepost 42B, a gatepost 42C, and a gatepost 42D.
  • the intermediate pillars 43 have four intermediate pillars 43, an intermediate pillar 43A, an intermediate pillar 43B, an intermediate pillar 43C, and an intermediate pillar 43D.
  • the underframe 41 is formed in a rectangular shape in plan view, and constitutes the bottom of the frame 40 .
  • the gatepost 42A, the gatepost 42B, the gatepost 42C, and the gatepost 42D are provided at four corners of the underframe 41 so as to extend in a direction orthogonal to the underframe 41.
  • the intermediate pillars 43A and 43B are spaced apart from each other in the longitudinal direction (X-axis direction) of the underframe 41 between the gateposts 42A and 42C.
  • the intermediate pillars 43C and 43D are spaced apart from each other in the longitudinal direction (X-axis direction) of the underframe 41 between the gateposts 42B and 42D.
  • the intermediate pillar 43A, the intermediate pillar 43B, the intermediate pillar 43C, and the intermediate pillar 43D are provided so as to extend in a direction perpendicular to the underframe 41. As shown in FIG.
  • the upper beam 44 is provided on the gatepost 42A, the gatepost 42B, the gatepost 42C, the gatepost 42D, and the intermediate posts 43A, 43B, 43C, and 43D.
  • the structure of the frame 40 described above is an example, and the structure is not limited to the above structure as long as the machine room unit 4 is formed in a rectangular parallelepiped shape.
  • a base 10 is provided on the upper beam 44 of the machine room unit 4 .
  • the base 10 is supported by gateposts 42 and intermediate posts 43 .
  • the air heat exchanger 1A, the air heat exchanger 1B, the air heat exchanger 1C, and the air heat exchanger 1D described above are arranged on the base 10 . That is, the plurality of air heat exchangers 1 are placed on top of the machine room unit 4 .
  • a drain pan 55 is provided on the upper portion of the machine room unit 4 . The drain pan 55 receives water droplets drained from the air heat exchanger 1 .
  • a drain pan 55 is arranged below the air heat exchanger 1 to receive water droplets falling from the air heat exchanger 1 .
  • the drain pan 55 is provided so as to extend in the longitudinal direction (X-axis direction) of the machine room unit 4 .
  • the drain pan 55 accumulates water droplets that have naturally flowed down from the air heat exchanger 1 by gravity as drain water, and guides the water to a discharge port (not shown).
  • the side walls 45 are composed of first side walls 45 a arranged at both ends in the longitudinal direction (X-axis direction) of the machine room unit 4 and machine side walls 45 a arranged at both ends in the lateral direction (Y-axis direction) of the machine room unit 4 . and a chamber panel 45b.
  • the first side wall 45a is a plate-like side wall provided so as to extend in the vertical direction (Z-axis direction) and the lateral direction (Y-axis direction).
  • the first side wall 45a is arranged to cover the space formed between the gateposts 42A and 42B. Further, the first side wall 45a is arranged so as to cover the space formed between the gatepost 42C and the gatepost 42D.
  • the machine room panel 45b is a side wall provided so as to extend in the vertical direction (Z-axis direction) and the longitudinal direction (X-axis direction).
  • the machine room panel 45b includes a space formed between the gate post 42A and the intermediate post 43A, a space formed between the intermediate post 43A and the intermediate post 43B, and a space formed between the intermediate post 43B and the gate post 42C. They are arranged so as to cover each space.
  • the machine room panel 45b has a space formed between the gate post 42B and the intermediate post 43C, a space formed between the intermediate post 43C and the intermediate post 43D, and a space formed between the intermediate post 43D and the gate post 42D. It is arranged so as to cover each of the designated spaces.
  • FIG. 5 is a plan view schematically showing the internal structure of the machine room unit 4 shown in FIG.
  • a compressor 31, a flow path switching device 33, a heat exchanger 3, and a decompression device (not shown) are housed inside the machine room unit 4.
  • the compressor 31, the flow switching device 33, the heat exchanger 3, the decompression device, and the air heat exchanger 1 are connected in series by refrigerant pipes to form a refrigerant circuit.
  • the heat exchangers 3 of the plurality of chilling units 100 are connected in parallel by water pipes, and the heat transfer fluid in the water pipes passes through the heat exchangers 3 by a pump unit (not shown). and circulates to a load side unit (not shown).
  • a control box 32 is included in the plurality of devices installed in the machine room unit 4 .
  • the compressor 31 sucks in low-temperature and low-pressure refrigerant, compresses the sucked-in refrigerant, converts it into high-temperature and high-pressure refrigerant, and discharges it.
  • the channel switching device 33 is, for example, a four-way valve, and switches the coolant channel under the control of a control device (not shown).
  • the heat exchanger 3 exchanges heat between the refrigerant and a heat transfer fluid such as water or antifreeze.
  • the decompression device is, for example, an expansion valve, and decompresses the refrigerant.
  • the control box 32 accommodates, for example, a control board for controlling the flow path switching device 33, a control board for controlling the opening of the decompression device, or an inverter board for controlling the rotation speed of the compressor 31, etc. are doing.
  • the machine room unit 4 may have a heater 57.
  • the chilling unit 100 When the chilling unit 100 is operated in cold regions, the disposal of residual ice in the drain pan 55 may pose a problem. Since the chilling unit 100 has the heater 57, the ice in the drain pan 55 can be melted or the drain water can be prevented from freezing by using the heater 57 during operation in cold regions.
  • the heater 57 is arranged near the air heat exchanger 1 .
  • the heater 57 is arranged above the drain pan 55 so as to extend in the longitudinal direction (X-axis direction) of the machine room unit 4 along the lower end portion 11b of the air heat exchanger 1 .
  • the chilling unit 100 causes external air to pass through the air heat exchanger 1 by means of the fan 5, thereby exchanging heat between the air and the refrigerant in the air heat exchanger 1, and discharging the air after heat exchange from above.
  • the chilling unit 100 performs a cooling operation in which the air heat exchanger 1 functions as a condenser and the heat exchanger 3 functions as an evaporator, and a cooling operation in which the air heat exchanger 1 functions as an evaporator and the heat exchanger 3 It is possible to switch to a heating operation in which the functions as a condenser.
  • the heat exchanger 3 In the cooling operation, the heat exchanger 3 generates a cooled heat transfer fluid, for example, this cooled heat transfer fluid is supplied to a load side unit (not shown) to cool the air on the load side (inside the room). and cool the room. In addition, in the heating operation, heat transfer fluid warmed by the heat exchanger 3 is generated. It heats up and heats the room.
  • FIG. 6 is a conceptual diagram showing the relationship between the air heat exchanger 1 and the machine room unit 4 of the chilling unit 100 according to the first embodiment.
  • FIG. 6 in order to explain the relationship between the air heat exchanger 1 and the machine room unit 4, illustration of a part of the configuration such as the support column 70 is omitted.
  • the width between side walls of the upper surface portion 24a of the machine room unit 4 is defined as an upper width WA1.
  • the width between the outer surfaces of the lower ends 11b of the pair of air heat exchangers 1A and 1B is defined as the heat exchanger lower width WB.
  • the air heat exchanger 1A and the air heat exchanger 1B are arranged to face each other in the lateral direction (Y-axis direction) of the machine room unit 4 .
  • the chilling unit 100 has an upper width WA1 larger than the heat exchanger lower width WB. That is, the chilling unit 100 is formed such that the upper width WA1>the heat exchanger lower width WB.
  • the chilling unit 100 is formed so that the difference between the upper width WA1 and the heat exchanger lower width WB is within 50 mm. That is, the chilling unit 100 is formed such that 0 mm ⁇ upper width WA1 ⁇ heat exchanger lower width WB ⁇ 50 mm.
  • the width between side walls of the bottom surface portion 24b of the machine room unit 4 is defined as a lower width WA2.
  • the upper surface portion 24a and the bottom surface portion 24b of the machine room unit 4 The dimension between is defined as the height dimension HC.
  • the machine room unit 4 may be formed so that the upper width WA1, the lower width WA2, and the height dimension HC are equal.
  • the chilling unit 100 is formed so that the upper width WA1 of the machine room unit 4 is larger than the heat exchanger lower width WB of the pair of air heat exchangers 1. However, the upper width WA1 may be the same as the heat exchanger lower width WB.
  • the machine room unit 4 of the chilling unit 100 is covered with a machine room panel 45b in the Y direction.
  • the machine room panel 45b closes the opening surrounded by the underframe 41, the gatepost 42, the intermediate pillar 43, and the upper beam 44 shown in FIG. 4, and protects the equipment inside the machine room unit 4. It is.
  • a machine room panel 45b is arranged to block each of the plurality of openings shown in FIG. Therefore, in Embodiment 1, three machine room panels 45b are attached to each of both end faces in the Y direction of the machine room unit 4 shown in FIG.
  • FIG. 7 is a front view of a chilling unit 100L that is a modification of the chilling unit 100 according to Embodiment 1.
  • FIG. in the lateral direction (Y-axis direction) of the chilling unit 100L the width between side walls of the upper surface portion 24a of the machine room unit 4 is defined as an upper width LWA1.
  • the width between the outer surfaces of the lower ends 11b of the pair of air heat exchangers 1A and 1B is defined as the heat exchanger lower width LWB.
  • the width between side walls of the bottom surface portion 24b of the machine room unit 4 is defined as a lower width LWA2.
  • the dimension between the upper surface portion 24a and the bottom surface portion 24b of the machine room unit 4 is defined as a height dimension LHC.
  • the chilling unit 100L is formed so that the upper width LWA1 of the machine room unit 4 and the heat exchanger lower width LWB of the pair of air heat exchangers 1 are equal.
  • the upper width LWA1 of the machine room unit 4 and the lower heat exchanger width LWB of the pair of air heat exchangers 1 are formed to be equal to each other. There is not enough space in the room unit 4. Therefore, the chilling unit 100L is limited in the degree of freedom in arranging devices such as the compressor 31 that constitute the refrigerant circuit, or in routing pipes.
  • FIG. 8 is an enlarged perspective view of the periphery of the machine room panel 45b of the chilling unit 100 according to Embodiment 1.
  • FIG. 9 is a cross-sectional view of the machine room unit 4 of the chilling unit 100 according to Embodiment 1.
  • FIG. 10 is a three-sided view of the machine room panel 45b alone.
  • FIG. 11 is a rear view of the machine room panel 45b.
  • the machine room panel 45b of the chilling unit 100 according to Embodiment 1 is a panel that forms the end surface of the machine room unit 4 in the Y direction.
  • the machine room panel 45b has a flat panel body 46 that covers the opening of the machine room unit 4.
  • a heat insulating member 49 is fixed to the surface of the panel main body 46 facing the inside of the machine room unit 4 .
  • the heat insulating member 49 has a rectangular end surface 49a on the outer periphery and a uniform thickness throughout.
  • An end surface 49 a of the outer periphery of the heat insulating member 49 is arranged along the outer edge of the panel body 46 . Therefore, the panel main body 46 is substantially covered with the heat insulating member 49 having a uniform thickness over the entire area.
  • the machine room panel 45b as shown in FIG. A panel body 46 is arranged at a position separated in the direction.
  • the machine room panel 45b includes connecting portions 47A, 47B and 47C connecting the outer edge of the panel body 46 and the fixing portions 48A, 48B and 48C.
  • the connecting portion 47A connects the fixing portion 48A located on the lower side of the chilling unit 100 and the panel main body 46, and is particularly referred to as the lower connecting portion 47A.
  • connection parts 47B and 47C located on the upper side and both ends in the horizontal direction of the machine room panel 45b are raised at an angle close to vertical with respect to the fixed parts 48B and 48C and the panel body 46.
  • the lower connection portion 47A is formed at a large inclination angle ⁇ with respect to the fixing portions 48A, 48B, 48C and the panel main body 46 .
  • the inclination angle ⁇ is the inclination angle with respect to the plane of the fixed parts 48A, 48B, 48C and the panel main body 46, in other words, it is also the inclination angle with respect to the vertical plane.
  • the machine room panel 45b has a heat insulating member 49 arranged above the lower connecting portion 47A. Since the machine room panel 45b is arranged at a position where the panel main body 46 protrudes toward the outside of the machine room unit 4 with respect to the fixed parts 48A, 48B and 48C, the panel is formed of a simple flat plate as in the prior art. In contrast, the surface area tends to be large and the amount of condensation tends to increase.
  • the lower connection portion 47A is inclined downward even when water condensed inside the machine room unit 4 flows down along the panel body 46. Therefore, retention of condensed water is suppressed. This suppresses water from staying and corroding the lower part of the machine room panel 45b. In addition, it suppresses the deterioration of the appearance due to the occurrence of rust.
  • the machine room panel 45b is configured such that the bolt insertion holes 98 and the bolt holes 98 and the bolt holes 98 and 48C are in contact with the underframe 41, the gate post 42, the intermediate post 43 and the upper beam 44 of the machine room unit 4.
  • the bolts 91 , 92 , 93 and 94 are inserted into the insertion notches 97 and fastened and fixed.
  • the bolt 92 for fixing the fixing portion 48A positioned at the lower portion of the machine room panel 45b is configured to be visible obliquely from above due to the inclination of the lower connecting portion 47A.
  • the projection amount P of the panel body 46 from the fixed portions 48A, 48B, and 48C is set to 30 mm, and the inclination angle ⁇ of the lower connection portion 47A with respect to the vertical direction is set to 50° or less. ing.
  • FIG. 12 is a perspective view of the chilling unit system 110 according to Embodiment 1.
  • FIG. FIG. 13 is a conceptual diagram showing the relationship between two adjacent chilling units 100 that constitute the chilling unit system 110 according to the first embodiment.
  • the chilling unit system 110 has multiple chilling units 100 .
  • the chilling unit system 110 is configured by arranging a plurality of chilling units 100 side by side in the lateral direction (Y-axis direction).
  • the chilling unit system 110 is installed such that the longitudinal direction (X-axis direction) of the plurality of chilling units 100 is parallel.
  • FIG. 1 the chilling unit system 110, as shown in FIG.
  • the interval W between the machine room units 4 of two adjacent chilling units 100 in the lateral direction (Y-axis direction) of the chilling unit 100 is set to 350 mm or more. It is The interval W is the interval between the outer surfaces of the panel body 46 of the machine room panel 45b. This interval W is set in consideration of maintainability of the plurality of chilling units 100 .
  • the space between the two chilling units 100 is also used as a space for workers to enter and work when performing maintenance on the chilling units 100 .
  • a machine foundation 95 is formed on the floor surface 96 of the space, and the chilling unit 100 is installed on the machine foundation 95 .
  • a height h1 of the machine foundation 95 is set to about 200 mm.
  • the height H of the machine room unit 4 is set to be 650 mm or more from the floor surface 96 .
  • the height of the machine room unit 4 is set so that the equipment arranged inside the machine room unit 4 can be accommodated, and when the chilling units 100 are arranged as shown in FIGS. A space is secured between them so that workers can enter and perform maintenance work.
  • the height required for a worker to work while crouching is 650 mm or more, and the height H of the machine room unit 4 from the floor surface 96 is ensured to be 650 mm or more.
  • the height of the machine base 95 may be varied.
  • the height h of the bolt 94 of the fixing portion 48A located at the lower end of the machine room panel 45b of the chilling unit 100 is, for example, 277 mm from the floor surface 65. position.
  • the inclination angle ⁇ of the lower connection portion 47A is set to at least 50° or less, so that the operator can The bolt 94 can be removed while visually recognizing the bolt 94 in the working state (naturally crouched state).
  • FIG. 14 is an explanatory diagram of the relationship between the line of sight of the operator and the lower connection portion 47A in the first embodiment.
  • the inclination angle ⁇ of the lower connection portion 47A is set appropriately according to the height H of the viewpoint E and the distance w from the machine room panel 45b. should be set within a certain range.
  • the position of the operator's viewpoint E in normal maintenance work is at the height H from the floor surface 96 of the upper end of the machine room unit 4 . This is because the air heat exchanger 1 protrudes from the machine room unit 4 at an inclination angle ⁇ above the chilling unit 100, and the operator needs to bend down to work accordingly.
  • the inclination angle ⁇ of the lower connection portion 47A is ⁇ tan ⁇ 1 ⁇ w/(H ⁇ h1) ⁇ (1)
  • the bolt 94 can be visually recognized from the viewpoint E. That is, the machine room panel 45b is set to ⁇ 39° so that the bolt 94 is not hindered from being visually recognized during normal work by the operator.
  • L is the dimension along the inclination of the air heat exchanger 1
  • ⁇ is the inclination angle of the air heat exchanger 1 with respect to the vertical direction.
  • the interval W between adjacent chilling units 100 is set to W ⁇ 2L sin ⁇ in consideration of the gap above the chilling units 100 . Therefore, if the worker enters the space between the chilling units 100 and sets the position of the viewpoint E at about half the distance W, the worker can work comfortably. Therefore, if the position w of the viewpoint E in FIG. is easy to see, and workability is improved.
  • the inclination angle ⁇ of the air heat exchanger 1 shown in FIG. 3 is 65° to 80°, the inclination angle ⁇ is 10° to 25°.
  • the dimension along the inclination direction of the air heat exchanger 1 is, for example, 1400 mm.
  • the machine room panel 45b has a protrusion amount P of the panel body 46 set to, for example, about 30 mm. Thereby, the machine room panel 45b can fix the heat insulation member 49 of uniform thickness to the inner surface of the panel main body 46. As shown in FIG. When the machine room unit 4 is covered with a conventional simple flat side wall, the heat insulating member 49 is partially notched or provided with a hole in order to avoid contact with the equipment inside the machine room unit 4.
  • the panel body 46 is arranged at a position where the panel main body 46 protrudes in the Y direction with respect to the fixed parts 48A, 48B, and 48C. There is no need to match the internal structure of Therefore, the three machine room panels 45b shown in FIG. 2 all have the same structure, and there is no need to manage their mounting positions when removing and mounting during maintenance work.
  • the machine room panel 45b can be installed inside the housing without increasing the size of the machine room unit 4 in the Y direction, that is, the interval between the underframes 41 in the Y direction.
  • Equipment installation area can be increased. Since the machine room panel 45b is removed during maintenance work, the projecting amount P does not narrow the work space. can be done without problems.
  • the amount of protrusion P of the panel body 46 is determined by installing a heat insulating member 49 having a uniform thickness inside the panel body 46 substantially over the entire area of the panel body 46, and considering installing equipment inside the machine room unit 4. Then, P ⁇ 30 mm may be set.
  • a plurality of chilling units 100 according to Embodiment 1 are normally used side by side as shown in FIG. However, even if the chilling unit 100 is installed alone, the inclination of the lower connection portion 47A of the machine room panel 45b suppresses corrosion, and the removal and installation work of the machine room panel 45b is suppressed. can improve sexuality.
  • the configuration shown in the above embodiment is an example, and can be combined with another known technology, and part of the configuration can be omitted or changed without departing from the gist of the present disclosure. It is also possible to

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  • Combustion & Propulsion (AREA)
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  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
PCT/JP2021/035902 2021-09-29 2021-09-29 チリングユニット及びチリングユニットシステム Ceased WO2023053280A1 (ja)

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PCT/JP2021/035902 WO2023053280A1 (ja) 2021-09-29 2021-09-29 チリングユニット及びチリングユニットシステム
JP2023550855A JP7603836B2 (ja) 2021-09-29 2021-09-29 チリングユニット及びチリングユニットシステム
US18/293,498 US12607384B2 (en) 2021-09-29 2021-09-29 Chilling unit and chilling-unit system

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