WO2017057003A1 - Water heat exchanger accommodation unit - Google Patents

Water heat exchanger accommodation unit Download PDF

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Publication number
WO2017057003A1
WO2017057003A1 PCT/JP2016/077171 JP2016077171W WO2017057003A1 WO 2017057003 A1 WO2017057003 A1 WO 2017057003A1 JP 2016077171 W JP2016077171 W JP 2016077171W WO 2017057003 A1 WO2017057003 A1 WO 2017057003A1
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WO
WIPO (PCT)
Prior art keywords
casing
refrigerant
heat exchanger
hot water
water heat
Prior art date
Application number
PCT/JP2016/077171
Other languages
French (fr)
Japanese (ja)
Inventor
晋司 吉川
麻有子 友井
Original Assignee
ダイキン工業株式会社
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 ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to CN201680055926.8A priority Critical patent/CN108027190A/en
Priority to EP16851177.2A priority patent/EP3358279B1/en
Publication of WO2017057003A1 publication Critical patent/WO2017057003A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/16—Arrangements for water drainage 
    • F24H9/17—Means for retaining water leaked from heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Definitions

  • This invention relates to a water heat exchanger housing unit, and more particularly to a water heat exchanger housing unit in which a water heat exchanger using a flammable refrigerant is housed.
  • a water heat exchanger housing unit there is a cold / hot water supply unit that houses a water heat exchanger that performs heat exchange between water and a refrigerant (for example, Japanese Patent Application Laid-Open No. 2014-163536 (Patent Document 1)). reference).
  • an object of the present invention is to provide a water heat exchanger accommodating unit that can prevent refrigerant leakage into the room when flammable refrigerant leaks.
  • the water heat exchanger accommodating unit of the present invention is: A water heat exchanger through which a flammable refrigerant flows; A casing containing the water heat exchanger; A discharge member connected to a connection port provided below the refrigerant pipe connection part in the casing, The discharge member discharges the combustible refrigerant leaked into the casing from the connection port to the outside of the casing.
  • the discharge member is connected to the connection port provided below the refrigerant pipe connection portion in the casing, and the combustible refrigerant leaking into the casing is discharged from the connection port to the outside of the casing by the discharge member. Therefore, when flammable refrigerant leaks rapidly into the casing in a state where it is installed indoors, most of the flammable refrigerant immediately after leaking into the casing remains liquid without being evaporated.
  • the combustible refrigerant flows down from the casing through the discharge member, and can be quickly discharged, for example, under the floor. Therefore, it is possible to prevent the refrigerant from leaking into the room when the combustible refrigerant leaks, and to suppress the risk of ignition and the like due to the flammable refrigerant staying in the room and increasing the gas concentration.
  • the discharge member discharges the combustible refrigerant leaked into the casing from the lower portion of the casing.
  • the flammable refrigerant leaked into the casing accumulates at the bottom of the casing, so that the leaked flammable refrigerant from the lower portion of the casing is discharged by the discharge member, thereby leaking the flammable refrigerant.
  • the liquid refrigerant occupying most of them can be quickly discharged, for example, under the floor from the lower part of the casing through the discharge member.
  • the discharge member discharges the combustible refrigerant leaked into the casing from the side portion of the casing.
  • the flammable refrigerant (particularly liquid refrigerant) leaked into the casing is accumulated at the bottom of the casing, the refrigerant leaked from the side of the casing below the refrigerant pipe connection portion in the casing.
  • the discharge member By discharging by the discharge member, the liquid refrigerant occupying most of the leaked combustible refrigerant can be quickly discharged from the lower part of the casing to the floor, for example, via the discharge member.
  • the discharge member is provided in a lower portion of the casing.
  • the discharge member since the discharge member is provided at the lower part of the casing, the liquid refrigerant occupying most of the combustible refrigerant leaked into the casing is transferred from the lower part of the casing to the floor, for example, via the discharge member. It can be discharged quickly.
  • the discharge member covers the refrigerant pipe connection portion outside the casing.
  • the bottom portion in the casing is inclined so as to guide the liquid to the discharge member.
  • the inflammable refrigerant leaked in the casing or condensed water at the time of cold water supply
  • the inclined bottom surface of the casing Etc. can be smoothly guided to the connection port.
  • a liquid receiving member is disposed in the casing and guides liquid to the connection port to which the discharge member is connected.
  • the liquid is guided to the connection port to which the discharge member is connected by the liquid receiving member disposed in the casing, so that the combustible refrigerant leaked in the casing (or condensed water at the time of cold water supply, etc.) Liquid) can be guided to the connection port.
  • a control board is provided in the casing and above the discharge member.
  • the ignition point that the control board has with respect to the combustible refrigerant leaking to the bottom of the casing is separated upward. Can improve safety.
  • the refrigerant leaks into the room when the flammable refrigerant leaks by discharging the leaked refrigerant out of the casing by the discharge member from below the refrigerant pipe connection portion in the casing. It is possible to realize a water heat exchanger accommodating unit that can prevent the above.
  • FIG. 1 is a schematic configuration diagram of a temperature control system according to a first embodiment of the present invention.
  • FIG. 2 is a front view of the cold / hot water supply unit attached to the wall surface of the temperature control system.
  • FIG. 3 is a diagram showing the configuration of the cold / hot water supply unit.
  • FIG. 4 is a front view of the cold / hot water supply unit of the temperature control system according to the second embodiment of the present invention.
  • FIG. 5 is a front view of a cold / hot water supply unit of a temperature control system according to a third embodiment of the present invention.
  • FIG. 6 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the fourth embodiment of the present invention.
  • FIG. 1 is a schematic configuration diagram of a temperature control system according to a first embodiment of the present invention.
  • FIG. 2 is a front view of the cold / hot water supply unit attached to the wall surface of the temperature control system.
  • FIG. 3 is a diagram showing the
  • FIG. 7 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the fifth embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of the main part including the first cover member as seen from the line VII-VII in FIG.
  • FIG. 9 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the sixth embodiment of the present invention.
  • 10 is a cross-sectional view taken along line IX-IX in FIG. 11 is an enlarged cross-sectional view of a main part including the first cover member of FIG.
  • FIG. 12 is an exploded perspective view of the cold / hot water supply unit.
  • FIG. 13 is a perspective view of a state in which the rear heat insulating member and the first and second cover members are attached to the bottom frame of the cold / hot water supply unit.
  • FIG. 14 is a front view of a state in which the rear heat insulating member and the first and second cover members are attached to the bottom frame of the cold / hot water supply unit.
  • FIG. 15 is a perspective view of the second cover member.
  • FIG. 16 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the seventh embodiment of the present invention.
  • FIG. 17 is a simplified configuration diagram showing a hot water supply apparatus having a hot water storage unit according to an eighth embodiment of the present invention.
  • FIG. 18 is a circuit diagram of the hot water supply apparatus.
  • FIG. 19 is a perspective view of a hot water storage unit of the hot water supply apparatus.
  • 20 is a perspective view showing a state in which the piping of the hot water storage unit shown in FIG. 19 is removed.
  • FIG. 21 is a front view of the lower part of the hot water storage unit.
  • FIG. 22 is a front view of the lower part of the hot water storage unit according to the ninth embodiment of the present invention.
  • FIG. 23 is a front view of the lower part of the hot water storage unit according to the tenth embodiment of the present invention.
  • FIG. 24 is a front view of the lower part of the hot water storage unit according to the eleventh embodiment of the present invention.
  • FIG. 1 shows a schematic configuration diagram of a temperature control system according to a first embodiment of the present invention.
  • the temperature control system includes an outdoor unit 100, a cold / hot water supply unit 200 connected to the outdoor unit 100, and an example of a heat exchange terminal connected to the cold / hot water supply unit 200.
  • First to fourth floor cooling / heating panels P1 to P4 are provided.
  • the cold / hot water supply unit 200 is an example of a water heat exchanger accommodating unit installed indoors.
  • the outdoor unit 100 includes a compressor 101, a four-way switching valve 102, an outdoor heat exchanger 103, an electric expansion valve 104, and an accumulator 105.
  • One end of the outdoor expansion heat exchanger 103 is connected to one end of the electric expansion valve 104, and the other end of the water heat exchanger 201 of the cold / hot water supply unit 200 is connected to the other end of the electric expansion valve 104.
  • the first port of the four-way switching valve 102 is connected to the discharge side of the compressor 101, and the second port of the four-way switching valve 102 is connected to the other end of the outdoor heat exchanger 103.
  • the third port of the four-way switching valve 102 is connected to the suction side of the compressor 101 via the accumulator 105, and the fourth port of the four-way switching valve 102 is connected to the water heat exchanger 201 on the cold / hot water supply unit 200 side. Connected to one end.
  • the four-way switching valve 102 is switched to the solid line switching position, while during the cooling operation, the four-way switching valve 102 is switched to the dotted line switching position.
  • the outdoor unit control device 120 controls the operating frequency of the compressor 101 and the opening degree of the electric expansion valve 104 so that the heat exchange efficiency of the water heat exchanger 201 and the outdoor heat exchanger 103 is optimized. Control.
  • the refrigerant circuit is configured by connecting the outdoor heat exchanger 103, the compressor 101, the water heat exchanger 201, and the electric expansion valve 104 in an annular shape.
  • a single refrigerant of R32 which is a slightly flammable refrigerant, or a mixed refrigerant containing R32 as a main component is used.
  • an outdoor fan is disposed in the vicinity of the outdoor heat exchanger 103. This outdoor fan blows air to the outdoor heat exchanger 103.
  • the compressor 101 When the compressor 101 is operated with the four-way switching valve 102 set to the dotted line switching position during the cooling operation by the outdoor unit controller 120, the high-temperature and high-pressure refrigerant discharged from the compressor 101 is transferred to the outdoor heat exchanger 103. After condensation, the pressure is reduced by the electric expansion valve 104, condensed by the water heat exchanger 201, and returned to the suction side of the compressor 101 via the accumulator 105. At this time, heat exchange between the refrigerant and water is performed in the water heat exchanger 201 functioning as an evaporator, and cold water having a desired temperature is generated.
  • the compressor 101 when the compressor 101 is operated with the four-way switching valve 102 in the solid line switching position during the heating operation, the high-temperature and high-pressure refrigerant discharged from the compressor 101 is condensed in the water heat exchanger 201 and then the electric expansion valve. The pressure is reduced at 104 and evaporated by the outdoor heat exchanger 103, and returns to the suction side of the compressor 101 via the accumulator 105. At this time, heat exchange between the refrigerant and water is performed in the water heat exchanger 201 functioning as a condenser, and hot water having a desired temperature is generated.
  • the cold / hot water supply unit 200 includes a water heat exchanger 201, an expansion tank 202, a circulation pump 203, a forward header 204 and a return header 205, a pressure sensor 215, and a liquid receiver 216.
  • the water heat exchanger 201 functions as an evaporator during cooling operation and functions as a condenser during heating operation. Further, the water heat exchanger 201 is provided with a flow path through which the refrigerant from the outdoor unit 100 flows and a flow path through which the return water from the first to fourth floor cooling / heating panels P1 to P4 flows.
  • the expansion tank 202 has a positive / negative pressure valve, and cold water (or hot water) from the water heat exchanger 201 is accumulated.
  • a water supply port 202a is provided in the upper portion of the expansion tank 202, and water is replenished into the expansion tank 202 from the water supply port 202a when necessary.
  • the circulation pump 203 is connected to the expansion tank 202 on the suction side, and connected to the forward header 204 on the discharge side. As a result, the circulation pump 203 can send cold water (or hot water) heat-exchanged with the refrigerant passing through the water heat exchanger 201 to the first to fourth floor cooling and heating panels P1 to P4.
  • first to fourth thermal valves V1 to V4 and one end of the drain plug V5 are connected to the forward header 204.
  • Water inlets of the first to fourth floor cooling / heating panels P1 to P4 are connected to the other ends of the first to fourth thermal valves V1 to V4.
  • the first to fourth thermal valves V1 to V4 open and close flow paths for supplying cold water (or hot water) to the first to fourth floor cooling / heating panels P1 to P4.
  • the first to fourth thermal valves V1 to V4 control the flow of cold water (or hot water). More specifically, the first to fourth thermal valves V1 to V4 are controlled by the chilled / hot water supply unit controller 220 and perform opening / closing operations corresponding to the cooling / heating capacity settings of the first to fourth floor cooling / heating panels P1 to P4. Do.
  • the return header 205 is connected to water outlets of the first to fourth floor cooling / heating panels P1 to P4. Accordingly, the cold water (or hot water) of the first to fourth floor cooling / heating panels P1 to P4 is returned to the cold / hot water supply unit 200.
  • the cold / hot water supply unit controller 220 is connected to the outdoor unit controller 120 via a signal line (not shown), and the outdoor unit controller 120 and the cold / hot water supply unit controller 220 are connected to each other. Operate cooperatively.
  • first to fourth floor cooling / heating panels P1 to P4 receive the supply of cold water (or hot water) via the first to fourth thermal valves V1 to V4 and perform cooling and heating in the temperature control zone. More specifically, the first to fourth floor cooling / heating panels P1 to P4 have first to fourth water circulation pipes 301 to 304 formed in a meandering shape. In the first to fourth water circulation pipes 301 to 304, cold water (or hot water) from the water heat exchanger 201 flows.
  • FIG. 2 shows a front view of the cold / hot water supply unit 200.
  • the cold / hot water supply unit 200 is installed at a predetermined height from the wall surface and floor 400 of the room. As shown in FIG. 2, the cold / hot water supply unit 200 is provided with a refrigerant pipe connection part 234 and a refrigerant pipe connection part 235 on the bottom frame 231 a of a rectangular parallelepiped casing 231. One end of the refrigerant pipe L1 (outward pipe) is connected to the refrigerant pipe connection portion 234, and one end of the refrigerant pipe L2 (return pipe) is connected to the refrigerant pipe connection portion 235.
  • the refrigerant pipe L1 (outward pipe) and the refrigerant pipe L2 (return pipe) are arranged below the floor 400 through a hole 400a provided in the floor 400 and connected to the outdoor unit 100 (shown in FIG. 1). Is done.
  • the inside of the casing 231 is communicated with the under floor by a discharge hose 230 having one end connected to a connection port 232 provided in the bottom frame 231a of the casing 231.
  • the discharge hose 230 is an example of a discharge member.
  • FIG. 3 shows the configuration of the cold / hot water supply unit 200, and is a view of the front panel 231c (shown in FIG. 2) and the top plate 231d (shown in FIG. 2) as viewed from the front. 3, the same components as those in FIG. 2 are denoted by the same reference numerals.
  • reference numerals 238 and 239 denote drain plugs.
  • the cold / hot water supply unit 200 has a rectangular parallelepiped casing 231, a circulation pump 203 attached to the bottom frame 231 a of the casing 231, and a water heat exchanger 201 installed on the left side in the casing 231.
  • a cold / hot water supply unit controller 220 as an example of a control board is attached to the electrical component part on the right side of the water heat exchanger 201 in the casing 231.
  • the high-temperature and high-pressure refrigerant supplied from the compressor 101 of the outdoor unit 100 (shown in FIG. 1) is supplied from the refrigerant pipe connection part 234 via the refrigerant pipe 234a.
  • the low-temperature and high-pressure refrigerant after heat exchange in the water heat exchanger 201 is supplied from the refrigerant pipe connection portion 235 to the electric expansion valve 104 (shown in FIG. 1) via the refrigerant pipe 235a.
  • the pressure sensor 215 is disposed in the refrigerant pipe 234a, and the liquid receiver 216 is disposed in the refrigerant pipe 235a.
  • the suction port 203 a of the circulation pump 203 and the hot water supply port 201 a of the water heat exchanger 201 are connected via a hot water supply pipe 236. Further, the discharge port 203b of the circulation pump 203 and the forward header 204 (shown in FIG. 1) are connected via a discharge pipe 237. Further, the water inlet 201 b of the water heat exchanger 201 and the return header 205 (shown in FIG. 1) are connected via a water absorption pipe 240.
  • the high-temperature and high-pressure refrigerant from the compressor 101 flows while the four-way switching valve 102 is in the solid line switching position. It is supplied to the water heat exchanger 201.
  • the water heat exchanger 201 heat exchange is performed with water supplied via the return header 205 and the water absorption pipe 240.
  • the low-temperature and high-pressure liquid refrigerant after the heat exchange is sent from the water heat exchanger 201 to the electric expansion valve 104 (shown in FIG. 1).
  • the hot water after heat exchange in the water heat exchanger 201 is sucked into the circulation pump 203 from the suction port 203a through the hot water supply pipe 236 by negative pressure generated by driving the circulation pump 203, and from the discharge port 203b to the discharge pipe 237. Supplied via header 204 (shown in FIG. 1).
  • the inside of the casing 231 in which the water heat exchanger 201 is accommodated and the under floor are communicated by the discharge hose 230 (discharge member).
  • the discharge hose 230 discharge member
  • the discharge hose 230 as the discharge member, it is possible to easily provide a path for guiding the flammable refrigerant leaked into the casing 231 under the floor.
  • the flexible hose By using the flexible hose, the degree of freedom of installation can be increased. Workability improves with increasing.
  • the combustible refrigerant (particularly liquid refrigerant) leaked into the casing 231 accumulates at the bottom of the casing 231, it leaks by connecting the lower part of the casing 231 and the floor under the floor with the discharge hose 230 (discharge member).
  • the liquid refrigerant occupying most of the combustible refrigerant can be quickly discharged under the floor from the lower portion of the casing 231 through the discharge hose 230.
  • the refrigerant pipe connection portion of the water heat exchanger 201 is a brazed portion where the refrigerant pipe is connected to each of the water heat exchanger 201, the pressure sensor 215, the liquid receiver 216, and the refrigerant pipe connection portions 234 and 235. is there.
  • FIG. 4 shows a front view of the cold / hot water supply unit 200 of the temperature control system of the second embodiment of the present invention.
  • the cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment, and the same reference numerals are given to the same components.
  • a liquid receiving member 251 is disposed on the lower side in the casing 231. The lowest position of the liquid receiving member 251 is connected to the connection port 232. Thereby, the inside of the casing 231 of the cold / hot water supply unit 200 and the underfloor are communicated with each other via the discharge hose 230.
  • the inclination angle ⁇ 1 [deg] of the bottom surface of the liquid receiving member 252 is set to a value larger than the predetermined angle ⁇ 1 min [deg].
  • the predetermined angle ⁇ 1 min [deg] is appropriately determined according to the refrigerant amount when the flammable refrigerant rapidly leaks in the casing 231, the configuration of the casing 231, and the like.
  • the inclination angle ⁇ 1 is an angle formed between the bottom surface of the liquid receiving member 252 and the horizontal plane.
  • the cold / hot water supply unit 200 of the second embodiment has the same effect as the cold / hot water supply unit 200 of the first embodiment.
  • the inclined bottom surface of the liquid receiving member 251 smoothly guides the flammable refrigerant leaked in the casing 231 (or liquid such as condensed water when supplying cold water) to the connection port 232 to which the discharge hose 230 is connected. can do.
  • the liquid receiving member 251 whose bottom surface is inclined is arranged on the lower side in the casing 231, but the bottom surface of the bottom frame 231 a in the casing 231 is inclined to connect the discharge hose 230. You may make it guide smoothly to the connection port 232.
  • the liquid receiving member 251 disposed on the lower side in the casing 231 is provided over almost the entire bottom surface of the casing 231, but the liquid receiving member is provided at least in the lower region of the refrigerant pipe connection portion in the casing 231. You may arrange.
  • FIG. 5 has shown the front view of the cold / hot water supply unit 200 of the temperature control system of 3rd Embodiment of this invention.
  • the cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment, and the same reference numerals are given to the same components.
  • the cold / hot water supply unit 200 of this 3rd Embodiment is provided with the mounting base 250 extended to a floor surface from the lower surface side of the casing 231, as shown in FIG.
  • the mounting table 250 constitutes a box-shaped passage that accommodates a part of the refrigerant pipes L 1 and L 2 and the discharge hose 230.
  • the refrigerant pipes L1 and L2 are arranged below the floor 400 through holes 400a provided in the floor 400, and are connected to the outdoor unit 100 (shown in FIG. 1).
  • the discharge hose 230 and the mounting base 250 constitute a discharge member.
  • a liquid receiving member 252 is arranged on the lower side in the mounting table 250.
  • the inside of the casing 231 of the cold / hot water supply unit 200 and the underfloor can be connected via the mounting table 250 and the discharge hose 230. Communicate.
  • the inclination angle ⁇ 2 [deg] of the bottom surface of the liquid receiving member 252 is set to a value larger than the predetermined angle ⁇ 2 min [deg].
  • the predetermined angle ⁇ 2min [deg] is appropriately determined according to the refrigerant amount when the flammable refrigerant rapidly leaks from the cold / hot water supply unit 200, the configurations of the casing 231 and the mounting table 250, and the like.
  • the liquid receiving member 252 is disposed on the lower side in the mounting table 250.
  • the liquid receiving member or the discharge hose may not be provided. Even in this case, the flammable refrigerant leaked from the casing can be guided under the floor by the pedestal constituting the box-shaped passage.
  • the cold / hot water supply unit 200 of the third embodiment has the same effect as the cold / hot water supply unit 200 of the first embodiment.
  • the pedestal 250 as a box-shaped passage in the lower part of the casing 231, a lower space of the casing 231 installed on the wall surface (a space in which piping or the like is laid) Is covered with the pedestal 250, and a passage for guiding the combustible refrigerant leaked into the casing 231 under the floor can be formed without impairing the beauty.
  • the liquid receiving member 252 disposed in the mounting table 250 allows the leaked flammable refrigerant (or liquid such as condensed water when cold water is supplied) to the connection port 252a to which the discharge hose 230 (discharge member) is connected. It can be surely guided.
  • the inclined bottom surface of the liquid receiving member 252 smoothly guides the flammable refrigerant leaked from the lower portion of the casing 231 (or liquid such as condensed water when supplying cold water) to the connection port 252a to which the discharge hose 230 is connected. can do.
  • FIG. 6 is a diagram showing the configuration of the cold / hot water supply unit 200 of the temperature control system of the fourth embodiment of the present invention.
  • the cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment except for the connection portion of the discharge hose 230 and the liquid receiving member 260, and the same reference numerals are given to the same components. It is attached.
  • a liquid receiving member 260 is arranged below the water heat exchanger 201 in the casing 231.
  • the upper end of the discharge hose 230 is connected to the connection port 260a of the liquid receiving member 260. Liquids such as condensed water and leakage refrigerant received by the liquid receiving member 260 are guided to the connection port 260a of the discharge hose 230.
  • the discharge hose 230 is an example of a discharge member.
  • the cold / hot water supply unit 200 of the fourth embodiment has the same effect as the cold / hot water supply unit 200 of the first embodiment.
  • the liquid receiving member 260 disposed in the casing 231 causes the leaked combustible refrigerant (or liquid such as condensed water when cold water is supplied) to the connection port 260a to which the discharge hose 230 (discharge member) is connected. It can be surely guided.
  • the bottom surface of the liquid receiving member 260 may be inclined to smoothly guide the leaked liquid such as a combustible refrigerant to the connection port 252a to which the discharge hose 230 (discharge member) is connected.
  • FIG. 7 shows the configuration of the cold / hot water supply unit 200 of the temperature control system according to the fifth embodiment of the present invention.
  • the cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment except for the connection portion of the discharge hose 230 and the first cover member 270, and the same reference numerals denote the same components. Is attached.
  • a first cover member 270 is attached to the bottom frame 231a of the casing 231 so as to cover the refrigerant pipe connection part 234 and the refrigerant pipe connection part 235.
  • the first cover member 270 is connected to the connection port 241 of the bottom frame 231a, and is a hole through which the refrigerant pipe L1 connected to the refrigerant pipe connection part 234 and the refrigerant pipe L2 connected to the refrigerant pipe connection part 235 pass. 270a and 270b.
  • the first cover member 270 has a connection hole 270c to which the upper end of the discharge hose 230 is connected.
  • the gap between the hole 270a of the first cover member 270 and the refrigerant pipe L1, and the gap between the hole 270b of the first cover member 270 and the refrigerant pipe L2 are sealed with a sealant or the like.
  • the discharge hose 230 and the first cover member 270 constitute a discharge member.
  • substrate cover member 221 which covers the electrical component part to which the control apparatus 220 for cold / hot water supply units was attached.
  • FIG. 8 is a cross-sectional view of the main part including the first cover member 270 as seen from the line VII-VII in FIG.
  • the first cover member 270 has a front cover part 271 and a rear cover part 272.
  • a hook 271 a is provided at the upper end of the front cover portion 271.
  • a hook 272a is provided at the upper end of the rear cover portion 272.
  • Refrigerant piping 234a, 235a (only 235a is shown in FIG. 8) is inserted through a long hole-like connection port 241 provided in the bottom frame 231a of the casing 231.
  • the hook 271a of the front cover portion 271 is locked to one of the opposing edges of the connection port 241, and the hook 272a of the rear cover portion 272 is locked to the other of the opposing edges of the connection port 241.
  • the discharge member (the first cover member 270 and the discharge hose 230) is connected to the connection port 241 provided below the refrigerant pipe connection portion in the casing 231.
  • the flammable refrigerant leaked into the casing 231 is discharged from the connection port 241 to the outside of the casing 231 through the first cover member 270 and the discharge hose 230, so that the flammable refrigerant rapidly leaks into the casing 231 while being installed indoors.
  • the gaseous combustible refrigerant When the vaporized combustible refrigerant is heavier than air, the gaseous combustible refrigerant also flows downward and is discharged downward from the casing 231 through the first cover member 270 and the discharge hose 230.
  • the flammable refrigerant (particularly liquid refrigerant) leaked into the casing 231 is accumulated at the bottom of the casing 231, the leakage refrigerant leaked from the lower portion of the casing 231 is discharged by the first cover member 270.
  • the liquid refrigerant occupying most of the combustible refrigerant leaked to the bottom can be quickly discharged from the lower part of the casing 231 to the floor under the first cover member 270 and the discharge hose 230.
  • the first cover member 270 covers the refrigerant pipe connection portions 234 and 235 outside the casing 231, even if the combustible refrigerant leaks from the refrigerant pipe connection portions 234 and 235 outside the casing 231, the first cover member 270 covers the refrigerant pipe connection portions 234 and 235 outside the casing 231. It can be received and discharged in the cover member 270, and safety is further increased.
  • the cold / hot water supply unit control device 220 (control board) in the casing 231 and above the first cover member 270, cold / hot water is leaked from the combustible refrigerant leaking to the bottom of the casing 231.
  • the ignition point as the supply unit controller 220 has can be pulled upward, and safety is improved.
  • the casing 231 in which the water heat exchanger 201 is accommodated communicates with the under floor by the first cover member 270 and the discharge hose 230 (discharge member), so that the casing 231 is combustible in a state of being installed indoors.
  • the refrigerant leaks rapidly, most of the combustible refrigerant immediately after leaking into the casing 231 does not completely evaporate but flows down from the casing 231 via the discharge hose 230 and is quickly discharged under the floor.
  • the discharge hose 230 as the discharge member, it is possible to easily provide a path for guiding the flammable refrigerant leaked into the casing 231 under the floor.
  • the flexible hose By using the flexible hose, the degree of freedom of installation can be increased. Workability improves with increasing.
  • the combustible refrigerant (particularly liquid refrigerant) leaked into the casing 231 is accumulated at the bottom of the casing 231, the lower portion of the casing 231 and the under floor are communicated by the first cover member 270 and the discharge hose 230 (discharge member).
  • the liquid refrigerant which occupies most of the leaked combustible refrigerant can be quickly discharged from the lower part of the casing 231 under the floor via the first cover member 270 and the discharge hose 230.
  • the bottom of the casing 231 may be inclined so as to guide the liquid to the first cover member 270.
  • the inclined bottom surface of the casing 231 can smoothly guide the combustible refrigerant leaked in the casing 231 (or liquid such as condensed water when cold water is supplied) to the connection port 241.
  • the liquid receiving member 251 shown in FIG. 4 of the second embodiment may be disposed on the lower side in the casing 231.
  • the inclined bottom surface of the liquid receiving member 251 can smoothly guide the combustible refrigerant leaked in the casing 231 (or a liquid such as condensed water when cold water is supplied) to the connection port 241.
  • FIG. 9 shows the configuration of the cold / hot water supply unit 200 of the temperature control system according to the sixth embodiment of the present invention.
  • the cold / hot water supply unit 200 of the sixth embodiment has the same configuration as the cold / hot water supply unit 200 of the fifth embodiment except for the second cover member 280, and the same reference numerals are given to the same components. is doing.
  • a first cover member 270 that covers the refrigerant pipe connection part 234 and the refrigerant pipe connection part 235 is attached to the bottom frame 231a of the casing 231 as shown in FIG.
  • a second cover member 280 that covers the refrigerant pipe connection portion of the refrigerant circuit is attached in the casing 231.
  • the second cover member 280 is made of a heat insulating material (for example, foamed resin), and includes a main body portion 280a and a guide portion 280b extending downward from the lower end of the main body portion 280a.
  • the main body 280a of the second cover member 280 covers a part of the front side of the water heat exchanger 201 (including the pressure sensor 215 and the liquid receiver 216), that is, a refrigerant pipe connection portion.
  • FIG. 10 shows a sectional view taken along line IX-IX in FIG. 9, and the same reference numerals are given to the same components as those in FIG.
  • a rear heat insulating member 290 is attached to the rear surface side in the casing 231.
  • the water heat exchanger 201 is fitted in a vertically long recess 290a provided on the back heat insulating member 290.
  • the refrigerant pipe 234a (shown in FIG. 3) provided with the pressure sensor 215 and the refrigerant pipe 235a (shown in FIG. 3) provided with the liquid receiver 216, from the brazed pipe connection portion.
  • the leaked flammable refrigerant flows downward in the main body portion 280a of the second cover member 280 as shown by the arrow in FIG. 10, and passes through the guide portion 280b from the lower end of the main body portion 280a.
  • the air is discharged under the floor through the discharge hose 230 connected to the connection hole 270c (shown in FIG. 7) of the first cover member 270.
  • the discharge hose 230 and the first cover member 270 constitute a discharge member.
  • the first cover member 270 includes a front cover part 271 and a rear cover part 272.
  • FIG. 11 shows an enlarged cross-sectional view of the main part including the first cover member 270 of FIG.
  • the same reference numerals are assigned to the same components as those in FIG. 8 of the fifth embodiment.
  • the flammable refrigerant leaked from the upper pipe connection portion is guided to the guide portion 280b of the second cover member 280, and the first cover via the connection port 241 provided in the bottom frame 231a. It flows down into the member 270.
  • FIG. 12 shows an exploded perspective view of the cold / hot water supply unit 200.
  • the front panel 231c shown in FIG. 2
  • the top plate 231d shown in FIG. 2
  • the cold / hot water supply unit 200 includes a bottom frame 231a, a back panel 231b surrounding the back side, left side, and right side of the bottom frame 231a, and a back heat insulating member fitted into the back panel 231b.
  • a hydrothermal exchanger 201 fitted in a vertically long recess 290a provided on the left side of the back heat insulation member 290, and an expansion tank fitted on the rear side in a recess 290b provided on the right side of the back heat insulation member 290 202, a front heat insulating member 295 covering the front surface side of the expansion tank 202, a cold / hot water supply unit controller 220 attached to the front surface of the front heat insulating member 295, and a second cover covering a refrigerant pipe connection portion of the refrigerant circuit Member 280 and a first cover member 270 (front cover portion 271, rear cover 270a) attached to the lower side of the bottom frame 231a. Having over 272) and.
  • FIG. 13 is a perspective view showing a state in which the rear heat insulating member 290 and the first and second cover members 270 and 280 are attached to the bottom frame 231a of the cold / hot water supply unit 200.
  • the same components as those in FIG. 9 are denoted by the same reference numerals.
  • FIG. 14 is a front view showing a state in which the rear heat insulating member 290 and the first and second cover members 270 and 280 are attached to the bottom frame 231a of the cold / hot water supply unit 200. 14, the same reference numerals are assigned to the same components as those in FIG.
  • FIG. 15A is a perspective view of the second cover member 280 as viewed obliquely from the front right and obliquely upward.
  • FIG. 15B is a perspective view of the second cover member 280 as viewed obliquely from the right rear and obliquely upward.
  • FIG. 15 (c) is a perspective view of the second cover member 280 as seen from the diagonally left rear and diagonally upward.
  • the main body 280a of the second cover member 280 has a vertically long dome shape with an open rear side.
  • the rectangular guide part 280b extending downward from the lower end of the main body part 280a and the edge on the opening side is provided with peripheral walls 281, 282 and 283 on each side except the upper side.
  • the cold / hot water supply unit 200 of the sixth embodiment has the same effect as the cold / hot water supply unit 200 of the fifth embodiment.
  • the cover member 280 can be positioned together with the guidance of the leaked refrigerant to the connection port 241.
  • FIG. 16 shows the configuration of the cold / hot water supply unit 200 of the temperature control system according to the seventh embodiment of the present invention.
  • the cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the fifth embodiment except for the first cover member 275, and the same reference numerals are assigned to the same components.
  • a first cover member 275 that covers the refrigerant pipe connection portion 234 and the refrigerant pipe connection portion 235 is attached to the bottom frame 231a of the casing 231 as shown in FIG.
  • the first cover member 275 has holes 275a and 275b through which the refrigerant pipe L1 connected to the refrigerant pipe connection part 234 and the refrigerant pipe L2 connected to the refrigerant pipe connection part 235 pass.
  • the first cover member 275 has a connection hole 275c to which the upper end of the discharge hose 230 is connected.
  • the discharge hose 230 and the first cover member 275 constitute a discharge member.
  • the first cover member 275 has a guide passage 275d that guides to a connection hole 275c to which the discharge hose 230 is connected via a connection port 276 provided on the left side surface of the casing 231.
  • the cold / hot water supply unit 200 of the seventh embodiment has the same effect as the cold / hot water supply unit 200 of the fifth embodiment.
  • the flammable refrigerant (particularly liquid refrigerant) leaked into the casing 231 is accumulated at the bottom of the casing 231, the leakage refrigerant from the side of the casing 231 below the refrigerant pipe connection portion in the casing 231 is removed.
  • the liquid refrigerant occupying most of the leaked combustible refrigerant is quickly discharged from the lower part of the casing 231 under the floor through the first cover member 275 and the discharge hose 230. Can do.
  • coolant piping connection part of the water heat exchanger 201 by connecting the 1st cover member 275 to the connection port 276 provided in the left side surface of the water heat exchanger 201 in the said casing 231.
  • the characteristic refrigerant flows down to the lower side of the water heat exchanger 201 and can be discharged under the floor by the first cover member 275 and the discharge hose 230 through the connection port 276 on the lower side and the left side.
  • FIG. 17 shows a simplified configuration diagram showing a hot water supply apparatus provided with a hot water storage unit 1001 according to the eighth embodiment of the present invention
  • FIG. 18 shows a circuit diagram of the hot water supply apparatus.
  • the hot water supply apparatus includes a hot water storage unit 1001 and a heat pump unit 1002 as shown in FIGS.
  • the hot water storage unit 1001 includes a casing 1040, a hot water storage tank 1011 disposed in the casing 1040, and a water heat exchanger 1012 for generating hot water stored in the hot water storage tank 1011.
  • the hot water storage unit 1001 is an example of a water heat exchanger accommodating unit installed indoors.
  • a water supply pipe 1032 connected to a water supply source E is connected to the bottom of the hot water storage unit 1001.
  • the hot water storage unit 1001 introduces city water (tap water) of the water supply source E into the bottom of the hot water storage tank 1011 via the water inlet pipe 1032a branched from the water supply pipe 1032 connected to the water pipe connection port 1076. It can be done.
  • One end of a circulation pipe 1033 is connected to the bottom of the hot water storage tank 1011.
  • the other end of the circulation pipe 1033 is connected to the top of the hot water storage tank 1011.
  • the circulation pipe 1033 is provided with a circulation pump 1034 and a water heat exchanger 1012.
  • a mixing valve 1036 is connected to the top of the hot water storage tank 1011 through a hot water supply pipe 1035.
  • the mixing valve 1036 is connected to the other water inlet pipe 1032b branched from the water supply pipe 1032 and the hot water supply terminal T.
  • the hot water supply device can supply hot water having a desired temperature at the hot water supply terminal T by mixing the hot water discharged from the top of the hot water storage tank 1011 and the water supplied from the water supply source E with the mixing valve 1036. It is like that.
  • a hot water tank 1011 is connected to a bath circulation pipe 1090 shown in FIG. 17.
  • the water heat exchanger 1012 is disposed below the hot water storage tank 1011 and functions as a condenser. More specifically, in the water heat exchanger 1012, the high-temperature refrigerant from the heat pump unit 1002 and the water from the hot water storage tank 1011 exchange heat. Thereby, the hot water storage unit 1001 can warm the water from the hot water storage tank 1011 with the hydrothermal exchanger 1012 and return it to the hot water storage tank 1011.
  • the heat pump unit 1002 does not include the water heat exchanger 1012, but includes a compressor 1021 connected to the water heat exchanger 1012, expansion means 1022, and an air heat exchanger 1023.
  • the compressor 1021, the water heat exchanger 1012, the expansion means 1022, and the air heat exchanger 1023 are connected in an annular shape via a refrigerant pipe 1031 (outward pipe 1031 a and return pipe 1031 b).
  • This air heat exchanger 1023 acts as an evaporator.
  • the expansion means 1022 is, for example, an expansion valve.
  • the forward pipe 1031a of the refrigerant pipe 1031 is connected to one end of the refrigerant pipe 1031c via the refrigerant pipe connection portion 1074.
  • the return pipe 1031b is connected to the other end of the refrigerant pipe 1031c via the refrigerant pipe connection portion 1073.
  • the refrigerant pipe 1031c is connected to refrigerant pipe connection portions 1073 and 1074 through a water heat exchanger 1012.
  • the refrigerant circuit is configured by connecting the compressor 1021, the expansion means 1022, the air heat exchanger 1023, and the water heat exchanger 1012 in an annular shape.
  • a single refrigerant of R32 which is a slightly flammable refrigerant, or a mixed refrigerant containing R32 as a main component is used.
  • the water in the hot water storage tank 1011 flows through the circulation pipe 1033 from the bottom of the hot water storage tank 1011. At this time, the water flowing through the circulation pipe 1033 becomes hot water by heat exchange with the high-temperature refrigerant in the water heat exchanger 1012, and then returns from the top of the hot water storage tank 1011 into the hot water storage tank 1011.
  • high-temperature hot water can be stored in the hot water storage tank 1011.
  • Hot water in the hot water storage tank 1011 is supplied to the hot water supply terminal T and the bath through the water pipe 1037, the water pipe connection port 1075, and the water pipe 1080.
  • FIG. 19 shows a perspective view of the hot water storage unit 1001
  • FIG. 20 shows a state where the piping of FIG. 19 is removed.
  • 19 and 20 the same components as those in FIGS. 17 and 18 are denoted by the same reference numerals.
  • the hot water storage unit 1001 has a casing 1040 as shown in FIGS.
  • a hot water storage tank 1011 In the casing 1040, a hot water storage tank 1011, a water heat exchanger 1012, a hot water supply pipe 1035 (shown in FIG. 18), a water inlet pipe 1032a, a water inlet pipe 1032b (shown in FIG. 18), a refrigerant pipe 1031c, and the like are accommodated.
  • This hot water storage tank 1011 is covered with a heat insulating material 1013.
  • the water heat exchanger 1012 is also covered with a heat insulating material 1014.
  • the hot water storage tank 1011 is supported by three can body legs 1050, 1050, and 1050 and stands on the bottom plate 1045.
  • One of the three can legs 1050, 1050, 1050 is on the front side, and the other two are on the rear side.
  • the hot water storage tank 1011 is separated from the bottom plate 1045 by the support of the can body leg 1050.
  • a water heat exchanger 1012 is disposed between the bottom surface of the hot water storage tank 1011 and the bottom plate 1045.
  • a maintenance opening 1047 is provided at the front of the casing 1040. Further, a cover plate 1048 is detachably attached to the casing 1040 so as to cover the maintenance opening 1047.
  • FIG. 21 shows a front view of the lower part of the hot water storage unit 1001.
  • the same components as those in FIGS. 19 and 20 are denoted by the same reference numerals.
  • water piping connection ports 1071 and 1072 are provided in front of the cover plate 1048.
  • the water pipe connection ports 1071 and 1072 are connected to the top of the hot water storage tank 1011 via water pipes 1061 and 1063 (shown in FIG. 19) in the casing 1040.
  • a water pipe (not shown) is connected to the water pipe connection ports 1071 and 1072, the hot water in the hot water storage tank 1011 can be allowed to flow to other hot water supply terminals.
  • the water pipes 1061 and 1063 and the water pipe connection ports 1071 and 1072 are not shown.
  • Refrigerant pipe connection portions 1073 and 1074 are provided on one side of the water pipe connection ports 1071 and 1072, respectively.
  • the positions in the height direction of the refrigerant pipe connection portions 1073 and 1074 are lower than the positions in the height direction of the water pipe connection ports 1071 and 1072.
  • water pipe connection ports 1075 and 1076 are provided on the other side of the water pipe connection ports 1071 and 1072.
  • the hot water storage unit 1001 having the above configuration is installed on a floor 1400 as shown in FIG.
  • one end of the return pipe 1031b of the refrigerant pipe 1031 is connected to the refrigerant pipe connection part 1073, and one end of the forward pipe 1031a of the refrigerant pipe 1031 is connected to the refrigerant pipe connection part 1074.
  • the refrigerant pipe 1031 (outward pipe 1031a, return pipe 1031b) is disposed below the floor 1400 through a hole 1400a provided in the floor 1400, and is installed outside the heat pump unit 1002 (shown in FIG. 17). Connected to.
  • a discharge hose 1230 having one end connected to the bottom plate 1045 of the casing 1040.
  • the discharge hose 1230 is an example of a first cover member.
  • the inside of the casing 1040 in which the water heat exchanger 1012 is accommodated communicates with the under floor by the discharge hose 1230 (discharge member), so that the inside of the casing 1040 is combustible in a state of being installed indoors.
  • the discharge hose 1230 discharge member
  • the inside of the casing 1040 is combustible in a state of being installed indoors.
  • the discharge hose 1230 as the discharge member, a path for guiding the flammable refrigerant leaked into the casing 1040 can be easily provided, and the flexibility of installation can be obtained by using the flexible hose. Workability improves with increasing.
  • the combustible refrigerant (particularly liquid refrigerant) leaked into the casing 1040 accumulates at the bottom of the casing 1040, the lower part of the casing 1040 and the underfloor are communicated with each other by the discharge hose 1230 (discharge member).
  • the liquid refrigerant occupying most of the combustible refrigerant can be quickly discharged under the floor from the lower portion of the casing 1040 via the discharge hose 1230.
  • discharge hose 1230 discharge member
  • connection port 1232 provided in the lower portion of the water heat exchanger 1012 in the casing 1040
  • the combustible refrigerant flows down to the lower side of the water heat exchanger 1012 and can be discharged under the floor by the discharge hose 1230 through the lower connection port 1232.
  • a liquid receiving member having an inclined bottom surface may be disposed on the bottom plate 1045 to smoothly guide the leaked refrigerant to the connection port 1232 to which the discharge hose 1230 is connected.
  • the bottom surface of the bottom plate 1045 may be inclined to smoothly guide the refrigerant leaked to the connection port 1232 to which the discharge hose 1230 is connected.
  • FIG. 22 shows a front view of the lower part of the hot water storage unit 1001 according to the ninth embodiment of the present invention.
  • the hot water storage unit 1001 of the ninth embodiment has the same configuration as the hot water storage unit 1001 of the eighth embodiment, except that there is no connection port 1232, the discharge hose 1230, and the decorative panel 1250, and FIGS. Is used.
  • a decorative panel 1250 is disposed between the bottom plate 1045 of the casing 1040 and the floor 1400 so as to surround the entire periphery, as shown in FIG.
  • the decorative panel 1250 constitutes a box-shaped passage that accommodates a part of the refrigerant pipe 1031 (1031a, 1031b) and the discharge hose 1230.
  • the refrigerant pipe 1031 (1031a, 1031b) is disposed below the floor 1400 through a hole 1400a provided in the floor 1400, and is connected to the heat pump unit 1002 (shown in FIG. 8).
  • the discharge hose 1230 and the decorative panel 1250 constitute a discharge member.
  • a liquid receiving member 1252 is disposed on the lower side in the decorative panel 1250.
  • the inclination angle ⁇ 3 [deg] of the bottom surface of the liquid receiving member 1252 is set to a value larger than the predetermined angle ⁇ 3 min [deg].
  • the predetermined angle ⁇ 3min [deg] is appropriately determined according to the refrigerant amount when the flammable refrigerant rapidly leaks from the hot water storage unit 1001, the configurations of the casing 1040 and the decorative panel 1250, and the like.
  • the liquid receiving member 1252 is disposed on the lower side in the decorative panel 1250.
  • at least one of the liquid receiving member and the discharge hose may be omitted. Even in this case, the flammable refrigerant leaked from the casing can be guided under the floor by the pedestal constituting the box-shaped passage.
  • the hot water storage unit 1001 of the ninth embodiment has the same effect as the hot water storage unit 1001 of the eighth embodiment.
  • the decorative panel 1250 as a box-shaped passage at the lower part of the casing 1040, the lower space of the casing 1040 installed on the wall surface (the space where piping or the like is laid)
  • a passage for guiding the flammable refrigerant leaked into the casing 1040 to the lower floor can be formed without impairing the beauty.
  • the liquid receiving member 1252 disposed in the decorative panel 1250 allows the leaked combustible refrigerant (or liquid such as condensed water when cold water is supplied) to be connected to the connection port 1252a to which the discharge hose 1230 (discharge member) is connected. Can be surely guided.
  • the inclined bottom surface of the liquid receiving member 1252 smoothly guides the flammable refrigerant leaked from the lower portion of the casing 1040 (or liquid such as condensed water when supplying cold water) to the connection port 1252a to which the discharge hose 1230 is connected. can do.
  • the flammable refrigerant leaks from the refrigerant pipe connection portions 1074 and 1073 to which the refrigerant pipe 1031 (1031a and 1031b) is connected outside the casing 1040, it is received in the decorative panel 1250 and is discharged under the floor by the discharge hose 1230. It can be discharged and safety is increased.
  • FIG. 23 is a front view of the lower part of the hot water storage unit 1001 according to the tenth embodiment of the present invention.
  • the hot water storage unit 1001 of the tenth embodiment has the same configuration as the hot water storage unit 1001 of the eighth embodiment except for the discharge hose 1230 and the first cover member 1270, and FIGS.
  • a first cover member 1270 that covers the refrigerant pipe 1031 (outward pipe 1031a, return pipe 1031b) is attached to the cover plate 1048.
  • the first cover member 1270 has a hole (not shown) through which the outgoing pipe 1031a of the refrigerant pipe 1031 connected to the refrigerant pipe connecting part 1074 and the return pipe 1031b of the refrigerant pipe 1031 connected to the refrigerant pipe connecting part 1073 pass.
  • Have The first cover member 1270 has a connection hole (not shown) to which the upper end of the discharge hose 1230 is connected. Further, the inside of the casing 1040 and the inside of the first cover member 1270 communicate with each other via a connection port 1232 provided in the lower part of the water heat exchanger 1012 in the casing 1040.
  • the discharge hose 1230 and the first cover member 1270 constitute a discharge member.
  • the discharge member (the first cover member 1270 and the discharge hose 1230) is connected to the connection port 1232 provided below the refrigerant pipe connection portion in the casing 1040, so that the inside of the casing 1040
  • the flammable refrigerant leaked into the casing 1040 is discharged from the connection port 1232 to the outside of the casing 1040 through the first cover member 1270 and the discharge hose 1230, the flammable refrigerant rapidly leaks into the casing 1040 while being installed indoors.
  • the liquid combustible refrigerant flows from the casing 1040 through the first cover member 1270 and the discharge hose 1230. It is possible to discharge quickly under the floor. Therefore, it is possible to prevent the refrigerant from leaking into the room when the combustible refrigerant leaks, and to suppress the risk of ignition and the like due to the flammable refrigerant staying in the room and increasing the gas concentration.
  • the gaseous combustible refrigerant also flows downward and is discharged downward from the casing 1040 through the first cover member 1270 and the discharge hose 1230.
  • the flammable refrigerant (particularly liquid refrigerant) leaked into the casing 1040 accumulates at the bottom of the casing 1040, the leaked refrigerant from the lower portion of the casing 1040 is discharged by the first cover member 1270, so that the inside of the casing 1040
  • the liquid refrigerant occupying most of the combustible refrigerant leaked to the bottom can be quickly discharged from the lower part of the casing 1040 to the floor under the first cover member 1270 and the discharge hose 1230.
  • the first cover member 1270 covers the refrigerant pipe connection portions 1234 and 1235 outside the casing 1040, the first cover member 1270 can be used even if flammable refrigerant leaks from the refrigerant pipe connection portions 1234 and 1235 outside the casing 1040. It can be received and discharged in the cover member 1270, and safety is further increased.
  • the inside of the casing 1040 in which the water heat exchanger 1012 is accommodated communicates with the under floor by the first cover member 1270 and the discharge hose 1230 (discharge member), so that the casing 1040 is combustible in the state of being installed indoors.
  • the refrigerant leaks rapidly, most of the combustible refrigerant immediately after leaking into the casing 1040 does not evaporate and flows down from the casing 1040 via the discharge hose 1230 as it is in a liquid state, and is quickly discharged under the floor.
  • the discharge hose 1230 as the discharge member, a path for guiding the flammable refrigerant leaked into the casing 1040 can be easily provided, and the flexibility of installation can be obtained by using the flexible hose. Workability improves with increasing.
  • the refrigerant pipe connection portion of the refrigerant circuit may be covered and the leaked combustible refrigerant may be guided outside the casing 1040 by the second cover member disposed in the casing 1040.
  • FIG. 24 is a front view of the lower part of the hot water storage unit 1001 according to the eleventh embodiment of the present invention.
  • the hot water storage unit 1001 of the tenth embodiment has the same configuration as the hot water storage unit 1001 of the tenth embodiment except for the first cover member 1275, and FIGS.
  • a first cover member 1275 that covers the refrigerant pipe 1031 (outward pipe 1031a, return pipe 1031b) is attached to the cover plate 1048.
  • the main body portion 1275a of the first cover member 1275 has a hole (through the through pipe 1031a of the refrigerant pipe 1031 connected to the refrigerant pipe connection portion 1074 and the return pipe 1031b of the refrigerant pipe 1031 connected to the refrigerant pipe connection portion 1073 ( (Not shown).
  • the main body 1275a of the first cover member 1275 has a connection hole (not shown) to which the upper end of the discharge hose 1230 is connected.
  • the first cover member 1275 has a guide passage 1275b extending upward from the right side of the main body 1275a along the right side surface of the casing 1040.
  • the discharge hose 1230 and the first cover member 1275 constitute a discharge member.
  • the refrigerant leaking into the space between the bottom surface of the hot water storage tank 1011 (shown in FIG. 20) and the bottom plate 1045 (shown in FIG. 20) is connected to the right side of the casing 1040.
  • the first cover member 1275 is guided to the main body 1275 a through the guide passage 1275 b through the first cover member 1275, and discharged to the lower side of the floor 1400 through the discharge hose 1230.
  • the first cover member 1275 has the same effect as the first cover member 275 in the cold / hot water supply unit 200 shown in FIG. 16 of the seventh embodiment.
  • R32 By using a single refrigerant composed of slightly flammable R32 or a mixed refrigerant mainly composed of R32 as the flammable refrigerant, R32 has a low ozone destruction coefficient and a global warming coefficient GWP. The influence can be suppressed, and the coefficient of performance COP (Coefficient Of Performance) can be improved to reduce the energy consumption.
  • COP Coefficient Of Performance
  • a slightly flammable single refrigerant of R32 or a mixed refrigerant containing R32 as a main component is used, but not limited to this, other flammable refrigerants are used.
  • the present invention may be applied to the existing water heat exchanger accommodating unit.
  • the cold / hot water supply unit 200 and the hot water storage unit 1001 have been described as the water heat exchanger accommodating unit.
  • the water heat exchanger accommodating unit is not limited to this, and a flammable refrigerant flows.
  • the present invention can be applied to a device including a water heat exchanger and a casing in which the water heat exchanger is accommodated.
  • the present invention is not limited to the first to eleventh embodiments, and various modifications can be made within the scope of the present invention.
  • a combination of the contents described in the first to eleventh embodiments may be used as an embodiment of the present invention.
  • Refrigerant pipe connection part 250 ... Place 251,252,260 ... Liquid receiving member 270,275,1270,1275 ... First cover Member 280 ... second cover member 290 ... back heat insulating member 295 ... front Surface heat insulating members 301 to 304 ... first to fourth water circulation pipes 400 ... floor 400a ... holes 1001 ... hot water storage unit 1002 ... heat pump unit 1011 ... hot water storage tank 1036 ... mixing valve 1021 ... compressor 1022 ... expansion means 1023 ... air heat exchanger 1031 ... Refrigerant piping 1031a ... Outward piping 1031b ... Return piping E ... Water supply source L1, L2 ... Refrigerant piping P1-P4 ... 1st-4th floor cooling / heating panel T ... Hot water supply terminal V1-V4 ... 1st-4th thermal valve

Abstract

This water heat exchanger accommodation unit comprises a cold/hot water supply unit (200) provided with: a water heat exchanger (201) through which a flammable refrigerant flows; a casing (231) in which the water heat exchanger (201) is accommodated; and discharge members (230, 270) that are connected to a connection port (241) provided below a refrigerant pipe connection part within the casing (231). Flammable refrigerant that has leaked within the casing (231) is discharged by the discharge members (230, 270) from the connection port (241) to outside the casing (231).

Description

水熱交換器収容ユニットWater heat exchanger housing unit
　この発明は、水熱交換器収容ユニットに関し、詳しくは可燃性冷媒が用いられる水熱交換器が収容された水熱交換器収容ユニットに関する。 This invention relates to a water heat exchanger housing unit, and more particularly to a water heat exchanger housing unit in which a water heat exchanger using a flammable refrigerant is housed.
　従来、水熱交換器収容ユニットとしては、水と冷媒との間で熱交換を行う水熱交換器を収容する冷温水供給ユニットがある(例えば、特開２０１４－１６３５３６号公報(特許文献１)参照)。 Conventionally, as a water heat exchanger housing unit, there is a cold / hot water supply unit that houses a water heat exchanger that performs heat exchange between water and a refrigerant (for example, Japanese Patent Application Laid-Open No. 2014-163536 (Patent Document 1)). reference).
特開２０１４－１６３５３６号公報JP 2014-163536 A
　ところで、上記水熱交換器収容ユニットにおいて、室内に設置された環境で可燃性冷媒を用いた場合、水熱交換器と冷媒配管との接続部などから可燃性冷媒が漏洩すると、室内に可燃性冷媒が滞留してガス濃度が高くなるという可能性がある。上記可燃性冷媒では、狭い室内空間であるほどガス濃度が濃くなって、発火などのリスクが高まる。 By the way, in the above-mentioned water heat exchanger housing unit, when a flammable refrigerant is used in an indoor environment, if the flammable refrigerant leaks from a connection portion between the water heat exchanger and the refrigerant pipe, it is flammable in the room. There is a possibility that the refrigerant will stay and the gas concentration will increase. In the flammable refrigerant, the narrower the indoor space, the higher the gas concentration, and the risk of ignition and the like increases.
　そこで、この発明の課題は、可燃性冷媒の漏洩時に室内への冷媒漏れを防ぐことができる水熱交換器収容ユニットを提供することにある。 Therefore, an object of the present invention is to provide a water heat exchanger accommodating unit that can prevent refrigerant leakage into the room when flammable refrigerant leaks.
　上記課題を解決するため、この発明の水熱交換器収容ユニットは、
　可燃性冷媒が流れる水熱交換器と、
　上記水熱交換器が収容されたケーシングと、
　上記ケーシング内の冷媒配管接続部分よりも下側に設けられた接続口に接続された排出部材と
を備え、
　上記排出部材は、上記ケーシング内に漏洩した可燃性冷媒を上記接続口から上記ケーシング外に排出することを特徴とする。 In order to solve the above problems, the water heat exchanger accommodating unit of the present invention is:
A water heat exchanger through which a flammable refrigerant flows;
A casing containing the water heat exchanger;
A discharge member connected to a connection port provided below the refrigerant pipe connection part in the casing,
The discharge member discharges the combustible refrigerant leaked into the casing from the connection port to the outside of the casing.
　上記構成によれば、ケーシング内の冷媒配管接続部分よりも下側に設けられた接続口に排出部材が接続され、ケーシング内に漏洩した可燃性冷媒を接続口から排出部材によりケーシング外に排出することによって、室内に設置された状態でケーシング内に可燃性冷媒が急速漏洩した場合、ケーシング内に漏洩した直後の可燃性冷媒のうちの多くは蒸発しきらずに液体のままであるので、液体の可燃性冷媒がケーシング内から排出部材を介して流れ落ちて例えば床下に速やかに排出することが可能になる。したがって、可燃性冷媒の漏洩時に室内への冷媒漏れを防ぐことができ、室内に可燃性冷媒が滞留してガス濃度が高くなって発火などのリスクが高まるのを抑制できる。 According to the above configuration, the discharge member is connected to the connection port provided below the refrigerant pipe connection portion in the casing, and the combustible refrigerant leaking into the casing is discharged from the connection port to the outside of the casing by the discharge member. Therefore, when flammable refrigerant leaks rapidly into the casing in a state where it is installed indoors, most of the flammable refrigerant immediately after leaking into the casing remains liquid without being evaporated. The combustible refrigerant flows down from the casing through the discharge member, and can be quickly discharged, for example, under the floor. Therefore, it is possible to prevent the refrigerant from leaking into the room when the combustible refrigerant leaks, and to suppress the risk of ignition and the like due to the flammable refrigerant staying in the room and increasing the gas concentration.
　なお、気化した上記可燃性冷媒が空気よりも重い場合、気体の可燃性冷媒も下方に流れてケーシング内から排出部材を介して下方に排出される。 In addition, when the said combustible refrigerant | coolant vaporized is heavier than air, a gaseous combustible refrigerant | coolant also flows below and is discharged | emitted below from the inside of a casing through a discharge member.
　また、一実施形態の水熱交換器収容ユニットでは、
　上記排出部材は、上記ケーシング内に漏洩した可燃性冷媒を上記ケーシングの下部から排出する。 Moreover, in the water heat exchanger accommodating unit of one embodiment,
The discharge member discharges the combustible refrigerant leaked into the casing from the lower portion of the casing.
　上記実施形態によれば、ケーシング内に漏洩した可燃性冷媒(特に液冷媒)がケーシング内の底部に溜まるので、ケーシングの下部からの漏洩冷媒を排出部材により排出することで、漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシングの下部から排出部材を介して例えば床下に速やかに排出することができる。 According to the above embodiment, the flammable refrigerant leaked into the casing (particularly liquid refrigerant) accumulates at the bottom of the casing, so that the leaked flammable refrigerant from the lower portion of the casing is discharged by the discharge member, thereby leaking the flammable refrigerant. The liquid refrigerant occupying most of them can be quickly discharged, for example, under the floor from the lower part of the casing through the discharge member.
　また、一実施形態の水熱交換器収容ユニットでは、
　上記排出部材は、上記ケーシング内に漏洩した可燃性冷媒を上記ケーシングの側部から排出する。 Moreover, in the water heat exchanger accommodating unit of one embodiment,
The discharge member discharges the combustible refrigerant leaked into the casing from the side portion of the casing.
　上記実施形態によれば、ケーシング内に漏洩した可燃性冷媒(特に液冷媒)がケーシング内の底部に溜まるので、ケーシング内の冷媒配管接続部分よりも下側かつケーシングの側部からの漏洩冷媒を排出部材により排出することで、漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシングの下部から排出部材を介して例えば床下に速やかに排出することができる。 According to the above embodiment, since the flammable refrigerant (particularly liquid refrigerant) leaked into the casing is accumulated at the bottom of the casing, the refrigerant leaked from the side of the casing below the refrigerant pipe connection portion in the casing. By discharging by the discharge member, the liquid refrigerant occupying most of the leaked combustible refrigerant can be quickly discharged from the lower part of the casing to the floor, for example, via the discharge member.
　また、一実施形態の水熱交換器収容ユニットでは、
　上記排出部材は、上記ケーシングの下部に設けられている。 Moreover, in the water heat exchanger accommodating unit of one embodiment,
The discharge member is provided in a lower portion of the casing.
　上記実施形態によれば、ケーシングの下部に排出部材が設けられているので、ケーシング内に漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシングの下部から排出部材を介して例えば床下に速やかに排出することができる。 According to the above embodiment, since the discharge member is provided at the lower part of the casing, the liquid refrigerant occupying most of the combustible refrigerant leaked into the casing is transferred from the lower part of the casing to the floor, for example, via the discharge member. It can be discharged quickly.
　また、一実施形態の水熱交換器収容ユニットでは、
　上記排出部材は、上記ケーシング外の冷媒配管接続部を覆う。 Moreover, in the water heat exchanger accommodating unit of one embodiment,
The discharge member covers the refrigerant pipe connection portion outside the casing.
　上記実施形態によれば、排出部材がケーシング外の冷媒配管接続部を覆っていることによって、そのケーシング外の冷媒配管接続部から可燃性冷媒が漏れ出ても排出部材内で受けて排出することができ、より安全性が高まる。 According to the said embodiment, even if a combustible refrigerant | coolant leaks from the refrigerant | coolant piping connection part outside the casing by the discharge | emission member covering the refrigerant | coolant piping connection part outside the casing, it receives in the discharge member and discharges | emits it. Can be made safer.
　また、一実施形態の水熱交換器収容ユニットでは、
　上記排出部材に液体を案内するように、上記ケーシング内の底部が傾斜している。 Moreover, in the water heat exchanger accommodating unit of one embodiment,
The bottom portion in the casing is inclined so as to guide the liquid to the discharge member.
　上記実施形態によれば、排出部材に液体を案内するように、ケーシング内の底部を傾斜させることによって、ケーシングの傾斜した底面によって、ケーシング内で漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を接続口にスムーズに案内することができる。 According to the above embodiment, by inclining the bottom portion in the casing so as to guide the liquid to the discharge member, the inflammable refrigerant leaked in the casing (or condensed water at the time of cold water supply) by the inclined bottom surface of the casing Etc.) can be smoothly guided to the connection port.
　また、一実施形態の水熱交換器収容ユニットでは、
　上記ケーシング内に配置され、上記排出部材が接続された上記接続口に液体を案内する液体受け部材を備えた。 Moreover, in the water heat exchanger accommodating unit of one embodiment,
A liquid receiving member is disposed in the casing and guides liquid to the connection port to which the discharge member is connected.
　上記実施形態によれば、ケーシング内に配置された液体受け部材により排出部材が接続された接続口に液体を案内することによって、ケーシング内で漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を接続口に案内することができる。 According to the above-described embodiment, the liquid is guided to the connection port to which the discharge member is connected by the liquid receiving member disposed in the casing, so that the combustible refrigerant leaked in the casing (or condensed water at the time of cold water supply, etc.) Liquid) can be guided to the connection port.
　また、一実施形態の水熱交換器収容ユニットでは、
　上記ケーシング内かつ上記排出部材よりも上側に配置された制御基板を備えた。 Moreover, in the water heat exchanger accommodating unit of one embodiment,
A control board is provided in the casing and above the discharge member.
　上記実施形態によれば、ケーシング内かつ排出部材よりも上側に制御基板を配置することによって、ケーシング内の底部に漏れた可燃性冷媒に対して制御基板が有するような発火点を上方に引き離すことができ、安全性が向上する。 According to the above embodiment, by disposing the control board in the casing and above the discharge member, the ignition point that the control board has with respect to the combustible refrigerant leaking to the bottom of the casing is separated upward. Can improve safety.
　以上より明らかなように、この発明によれば、ケーシング内の冷媒配管接続部分よりも下側から排出部材によりケーシング外に漏洩冷媒を排出することによって、可燃性冷媒の漏洩時に室内への冷媒漏れを防ぐことができる水熱交換器収容ユニットを実現することができる。 As is clear from the above, according to the present invention, the refrigerant leaks into the room when the flammable refrigerant leaks by discharging the leaked refrigerant out of the casing by the discharge member from below the refrigerant pipe connection portion in the casing. It is possible to realize a water heat exchanger accommodating unit that can prevent the above.
図１はこの発明の第１実施形態の温調システムの概略構成図である。FIG. 1 is a schematic configuration diagram of a temperature control system according to a first embodiment of the present invention. 図２は上記温調システムの壁面に取り付けられた冷温水供給ユニットの正面図である。FIG. 2 is a front view of the cold / hot water supply unit attached to the wall surface of the temperature control system. 図３は上記冷温水供給ユニットの構成を示す図である。FIG. 3 is a diagram showing the configuration of the cold / hot water supply unit. 図４はこの発明の第２実施形態の温調システムの冷温水供給ユニットの正面図である。FIG. 4 is a front view of the cold / hot water supply unit of the temperature control system according to the second embodiment of the present invention. 図５はこの発明の第３実施形態の温調システムの冷温水供給ユニットの正面図である。FIG. 5 is a front view of a cold / hot water supply unit of a temperature control system according to a third embodiment of the present invention. 図６はこの発明の第４実施形態の温調システムの冷温水供給ユニットの構成を示す図である。FIG. 6 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the fourth embodiment of the present invention. 図７はこの発明の第５実施形態の温調システムの冷温水供給ユニットの構成を示す図である。FIG. 7 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the fifth embodiment of the present invention. 図８は図７のVII－VII線から見た第１カバー部材を含む要部の断面図である。FIG. 8 is a cross-sectional view of the main part including the first cover member as seen from the line VII-VII in FIG. 図９はこの発明の第６実施形態の温調システムの冷温水供給ユニットの構成を示す図である。FIG. 9 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the sixth embodiment of the present invention. 図１０は図９のIX－IX線から見た断面図である。10 is a cross-sectional view taken along line IX-IX in FIG. 図１１は図９の第１カバー部材を含む要部の拡大断面図である。11 is an enlarged cross-sectional view of a main part including the first cover member of FIG. 図１２は上記冷温水供給ユニットの分解斜視図である。FIG. 12 is an exploded perspective view of the cold / hot water supply unit. 図１３は上記冷温水供給ユニットの底フレームに背面断熱部材と第１,第２カバー部材が取り付けられた状態の斜視図である。FIG. 13 is a perspective view of a state in which the rear heat insulating member and the first and second cover members are attached to the bottom frame of the cold / hot water supply unit. 図１４は上記冷温水供給ユニットの底フレームに背面断熱部材と第１,第２カバー部材が取り付けられた状態の正面図である。FIG. 14 is a front view of a state in which the rear heat insulating member and the first and second cover members are attached to the bottom frame of the cold / hot water supply unit. 図１５は上記第２カバー部材の斜視図である。FIG. 15 is a perspective view of the second cover member. 図１６はこの発明の第７実施形態の温調システムの冷温水供給ユニットの構成を示す図である。FIG. 16 is a diagram showing the configuration of the cold / hot water supply unit of the temperature control system according to the seventh embodiment of the present invention. 図１７はこの発明の第８実施形態の貯湯ユニットを備えた給湯装置を示す簡略構成図である。FIG. 17 is a simplified configuration diagram showing a hot water supply apparatus having a hot water storage unit according to an eighth embodiment of the present invention. 図１８は上記給湯装置の回路図である。FIG. 18 is a circuit diagram of the hot water supply apparatus. 図１９は上記給湯装置の貯湯ユニットの斜視図である。FIG. 19 is a perspective view of a hot water storage unit of the hot water supply apparatus. 図２０は図１９に示す貯湯ユニットの配管などを取り除いた状態を示す斜視図である。20 is a perspective view showing a state in which the piping of the hot water storage unit shown in FIG. 19 is removed. 図２１は上記貯湯ユニットの下部の正面図である。FIG. 21 is a front view of the lower part of the hot water storage unit. 図２２はこの発明の第９実施形態の貯湯ユニットの下部の正面図である。FIG. 22 is a front view of the lower part of the hot water storage unit according to the ninth embodiment of the present invention. 図２３はこの発明の第１０実施形態の貯湯ユニットの下部の正面図である。FIG. 23 is a front view of the lower part of the hot water storage unit according to the tenth embodiment of the present invention. 図２４はこの発明の第１１実施形態の貯湯ユニットの下部の正面図である。FIG. 24 is a front view of the lower part of the hot water storage unit according to the eleventh embodiment of the present invention.
　以下、この発明の水熱交換器収容ユニットを図示の実施の形態により詳細に説明する。 Hereinafter, the water heat exchanger accommodating unit of the present invention will be described in detail with reference to the illustrated embodiments.
　〔第１実施形態〕
　図１はこの発明の第１実施形態の温調システムの概略構成図を示している。 [First Embodiment]
FIG. 1 shows a schematic configuration diagram of a temperature control system according to a first embodiment of the present invention.
　＜温調システムの全体構成＞
　上記温調システムは、図１に示すように、室外機１００と、この室外機１００に接続された冷温水供給ユニット２００と、この冷温水供給ユニット２００に接続された熱交換端末の一例としての第１～第４床冷暖房パネルＰ１～Ｐ４とを備える。上記冷温水供給ユニット２００は、室内に設置される水熱交換器収容ユニットの一例である。 <Overall configuration of temperature control system>
As shown in FIG. 1, the temperature control system includes an outdoor unit 100, a cold / hot water supply unit 200 connected to the outdoor unit 100, and an example of a heat exchange terminal connected to the cold / hot water supply unit 200. First to fourth floor cooling / heating panels P1 to P4 are provided. The cold / hot water supply unit 200 is an example of a water heat exchanger accommodating unit installed indoors.
　＜室外機１００の構成＞
　上記室外機１００は、圧縮機１０１と、四路切換弁１０２と、室外熱交換器１０３と、電動膨張弁１０４およびアキュムレータ１０５を有する。この電動膨張弁１０４の一端には、室外熱交換器１０３の一端が接続され、電動膨張弁１０４の他端には、冷温水供給ユニット２００の水熱交換器２０１の他端が接続されている。また、四路切換弁１０２の第１ポートが圧縮機１０１の吐出側に接続され、四路切換弁１０２の第２ポートが室外熱交換器１０３の他端に接続されている。また、四路切換弁１０２の第３ポートがアキュムレータ１０５を介して圧縮機１０１の吸入側に接続され、四路切換弁１０２の第４ポートが冷温水供給ユニット２００側の水熱交換器２０１の一端に接続されている。 <Configuration of outdoor unit 100>
The outdoor unit 100 includes a compressor 101, a four-way switching valve 102, an outdoor heat exchanger 103, an electric expansion valve 104, and an accumulator 105. One end of the outdoor expansion heat exchanger 103 is connected to one end of the electric expansion valve 104, and the other end of the water heat exchanger 201 of the cold / hot water supply unit 200 is connected to the other end of the electric expansion valve 104. . Further, the first port of the four-way switching valve 102 is connected to the discharge side of the compressor 101, and the second port of the four-way switching valve 102 is connected to the other end of the outdoor heat exchanger 103. The third port of the four-way switching valve 102 is connected to the suction side of the compressor 101 via the accumulator 105, and the fourth port of the four-way switching valve 102 is connected to the water heat exchanger 201 on the cold / hot water supply unit 200 side. Connected to one end.
　暖房運転時、四路切換弁１０２を実線の切換位置に切り換える一方、冷房運転時、四路切換弁１０２を点線の切換位置に切り換える。 During the heating operation, the four-way switching valve 102 is switched to the solid line switching position, while during the cooling operation, the four-way switching valve 102 is switched to the dotted line switching position.
　上記室外機用制御装置１２０は、圧縮機１０１の運転周波数を制御すると共に、水熱交換器２０１および室外熱交換器１０３の熱交換効率が最適となるように、電動膨張弁１０４の開度も制御する。 The outdoor unit control device 120 controls the operating frequency of the compressor 101 and the opening degree of the electric expansion valve 104 so that the heat exchange efficiency of the water heat exchanger 201 and the outdoor heat exchanger 103 is optimized. Control.
　また、上記室外熱交換器１０３と圧縮機１０１と水熱交換器２０１および電動膨張弁１０４を環状に接続することにより冷媒回路を構成している。この冷媒回路では、可燃性冷媒の一例として、微燃性冷媒であるＲ３２の単一冷媒またはＲ３２を主成分とする混合冷媒を用いている。 Further, the refrigerant circuit is configured by connecting the outdoor heat exchanger 103, the compressor 101, the water heat exchanger 201, and the electric expansion valve 104 in an annular shape. In this refrigerant circuit, as an example of the flammable refrigerant, a single refrigerant of R32, which is a slightly flammable refrigerant, or a mixed refrigerant containing R32 as a main component is used.
　また、図示しないが、室外熱交換器１０３の近傍には室外ファンが配置されている。この室外ファンが室外熱交換器１０３に送風を行う。 Although not shown, an outdoor fan is disposed in the vicinity of the outdoor heat exchanger 103. This outdoor fan blows air to the outdoor heat exchanger 103.
　上記室外機用制御装置１２０によって、冷房運転時に四路切換弁１０２を点線の切換位置にして、圧縮機１０１を運転すると、圧縮機１０１から吐出した高温高圧の冷媒は、室外熱交換器１０３で凝縮した後、電動膨張弁１０４で減圧されて水熱交換器２０１で凝縮し、アキュムレータ１０５を介して圧縮機１０１の吸入側に戻る。このとき、蒸発器として機能する水熱交換器２０１で冷媒と水との熱交換が行われて、所望の温度の冷水が生成される。 When the compressor 101 is operated with the four-way switching valve 102 set to the dotted line switching position during the cooling operation by the outdoor unit controller 120, the high-temperature and high-pressure refrigerant discharged from the compressor 101 is transferred to the outdoor heat exchanger 103. After condensation, the pressure is reduced by the electric expansion valve 104, condensed by the water heat exchanger 201, and returned to the suction side of the compressor 101 via the accumulator 105. At this time, heat exchange between the refrigerant and water is performed in the water heat exchanger 201 functioning as an evaporator, and cold water having a desired temperature is generated.
　一方、暖房運転時に四路切換弁１０２を実線の切換位置にして、圧縮機１０１を運転すると、圧縮機１０１から吐出した高温高圧の冷媒は、水熱交換器２０１で凝縮した後、電動膨張弁１０４で減圧されて室外熱交換器１０３で蒸発し、アキュムレータ１０５を介して圧縮機１０１の吸入側に戻る。このとき、凝縮器として機能する水熱交換器２０１で冷媒と水との熱交換が行われて、所望の温度の温水が生成される。 On the other hand, when the compressor 101 is operated with the four-way switching valve 102 in the solid line switching position during the heating operation, the high-temperature and high-pressure refrigerant discharged from the compressor 101 is condensed in the water heat exchanger 201 and then the electric expansion valve. The pressure is reduced at 104 and evaporated by the outdoor heat exchanger 103, and returns to the suction side of the compressor 101 via the accumulator 105. At this time, heat exchange between the refrigerant and water is performed in the water heat exchanger 201 functioning as a condenser, and hot water having a desired temperature is generated.
　＜冷温水供給ユニット２００の構成＞
　上記冷温水供給ユニット２００は、水熱交換器２０１と、膨張タンク２０２と、循環ポンプ２０３と、往きヘッダ２０４および戻りヘッダ２０５と、圧力センサ２１５と、受液器２１６を有する。 <Configuration of cold / hot water supply unit 200>
The cold / hot water supply unit 200 includes a water heat exchanger 201, an expansion tank 202, a circulation pump 203, a forward header 204 and a return header 205, a pressure sensor 215, and a liquid receiver 216.
　上記水熱交換器２０１は、冷房運転時に蒸発器として機能し、暖房運転時に凝縮器として機能する。また、水熱交換器２０１には、室外機１００からの冷媒が流れる流路と、第１～第４床冷暖房パネルＰ１～Ｐ４からの戻り水が流れる流路とが設けられている。 The water heat exchanger 201 functions as an evaporator during cooling operation and functions as a condenser during heating operation. Further, the water heat exchanger 201 is provided with a flow path through which the refrigerant from the outdoor unit 100 flows and a flow path through which the return water from the first to fourth floor cooling / heating panels P1 to P4 flows.
　上記膨張タンク２０２は、正負圧弁が付いており、水熱交換器２０１からの冷水(または温水)が溜まる。また、膨張タンク２０２の上部には給水口２０２ａが設けられており、給水口２０２ａから膨張タンク２０２内に水が必要時に補充される。 The expansion tank 202 has a positive / negative pressure valve, and cold water (or hot water) from the water heat exchanger 201 is accumulated. In addition, a water supply port 202a is provided in the upper portion of the expansion tank 202, and water is replenished into the expansion tank 202 from the water supply port 202a when necessary.
　上記循環ポンプ２０３は、吸入側が膨張タンク２０２に接続されている一方、吐出側が往きヘッダ２０４に接続されている。これにより、循環ポンプ２０３は、水熱交換器２０１を通過する冷媒と熱交換した冷水(または温水)を第１～第４床冷暖房パネルＰ１～Ｐ４に送ることができるようになっている。 The circulation pump 203 is connected to the expansion tank 202 on the suction side, and connected to the forward header 204 on the discharge side. As a result, the circulation pump 203 can send cold water (or hot water) heat-exchanged with the refrigerant passing through the water heat exchanger 201 to the first to fourth floor cooling and heating panels P1 to P4.
　また、上記往きヘッダ２０４には、第１～第４熱動弁Ｖ１～Ｖ４の一端と、水抜き栓Ｖ５の一端とが接続されている。この第１～第４熱動弁Ｖ１～Ｖ４の他端には、第１～第４床冷暖房パネルＰ１～Ｐ４の水入口が接続されている。なお、第１～第４熱動弁Ｖ１～Ｖ４は、第１～第４床冷暖房パネルＰ１～Ｐ４に冷水(または温水)を供給するための流路を開閉する。 Further, one end of the first to fourth thermal valves V1 to V4 and one end of the drain plug V5 are connected to the forward header 204. Water inlets of the first to fourth floor cooling / heating panels P1 to P4 are connected to the other ends of the first to fourth thermal valves V1 to V4. The first to fourth thermal valves V1 to V4 open and close flow paths for supplying cold water (or hot water) to the first to fourth floor cooling / heating panels P1 to P4.
　上記第１～第４熱動弁Ｖ１～Ｖ４は、冷水(または温水)の流れを制御する。より詳しくは、第１～第４熱動弁Ｖ１～Ｖ４は、冷温水供給ユニット用制御装置２２０によって制御され、第１～第４床冷暖房パネルＰ１～Ｐ４の冷暖房能力設定に対応する開閉動作を行う。 The first to fourth thermal valves V1 to V4 control the flow of cold water (or hot water). More specifically, the first to fourth thermal valves V1 to V4 are controlled by the chilled / hot water supply unit controller 220 and perform opening / closing operations corresponding to the cooling / heating capacity settings of the first to fourth floor cooling / heating panels P1 to P4. Do.
　また、上記戻りヘッダ２０５には、第１～第４床冷暖房パネルＰ１～Ｐ４の水出口が接続されている。これにより、第１～第４床冷暖房パネルＰ１～Ｐ４の冷水(または温水)が、冷温水供給ユニット２００に戻るようになっている。 The return header 205 is connected to water outlets of the first to fourth floor cooling / heating panels P1 to P4. Accordingly, the cold water (or hot water) of the first to fourth floor cooling / heating panels P1 to P4 is returned to the cold / hot water supply unit 200.
　また、上記冷温水供給ユニット用制御装置２２０は、図示しない信号線を介して室外機用制御装置１２０に接続されており、室外機用制御装置１２０と冷温水供給ユニット用制御装置２２０は、互いに協調動作する。 The cold / hot water supply unit controller 220 is connected to the outdoor unit controller 120 via a signal line (not shown), and the outdoor unit controller 120 and the cold / hot water supply unit controller 220 are connected to each other. Operate cooperatively.
　＜第１～第４床冷暖房パネルＰ１～Ｐ４の構成＞
　上記第１～第４床冷暖房パネルＰ１～Ｐ４は、第１～第４熱動弁Ｖ１～Ｖ４を介して、冷水(または温水)の供給を受けて、温調ゾーンの冷暖房を行う。より詳しくは、第１～第４床冷暖房パネルＰ１～Ｐ４は、蛇行形状に形成された第１～第４水循環パイプ３０１～３０４を有する。この第１～第４水循環パイプ３０１～３０４内には、水熱交換器２０１からの冷水(または温水)が流れる。 <Configuration of first to fourth floor cooling / heating panels P1 to P4>
The first to fourth floor cooling / heating panels P1 to P4 receive the supply of cold water (or hot water) via the first to fourth thermal valves V1 to V4 and perform cooling and heating in the temperature control zone. More specifically, the first to fourth floor cooling / heating panels P1 to P4 have first to fourth water circulation pipes 301 to 304 formed in a meandering shape. In the first to fourth water circulation pipes 301 to 304, cold water (or hot water) from the water heat exchanger 201 flows.
　図２は上記冷温水供給ユニット２００の正面図を示している。 FIG. 2 shows a front view of the cold / hot water supply unit 200.
　この冷温水供給ユニット２００は、室内の壁面かつ床４００から所定の高さの取付位置に設置されている。図２に示すように、冷温水供給ユニット２００は、直方体のケーシング２３１の底フレーム２３１ａに冷媒配管接続部２３４と冷媒配管接続部２３５を設けている。この冷媒配管接続部２３４に冷媒配管Ｌ１(往配管)の一端が接続されると共に、冷媒配管接続部２３５に冷媒配管Ｌ２(復配管)の一端を接続している。この冷媒配管Ｌ１(往配管)と冷媒配管Ｌ２(復配管)は、床４００に設けられた穴４００ａを介して床４００の下側に配設され、室外機１００(図１に示す)に接続される。 The cold / hot water supply unit 200 is installed at a predetermined height from the wall surface and floor 400 of the room. As shown in FIG. 2, the cold / hot water supply unit 200 is provided with a refrigerant pipe connection part 234 and a refrigerant pipe connection part 235 on the bottom frame 231 a of a rectangular parallelepiped casing 231. One end of the refrigerant pipe L1 (outward pipe) is connected to the refrigerant pipe connection portion 234, and one end of the refrigerant pipe L2 (return pipe) is connected to the refrigerant pipe connection portion 235. The refrigerant pipe L1 (outward pipe) and the refrigerant pipe L2 (return pipe) are arranged below the floor 400 through a hole 400a provided in the floor 400 and connected to the outdoor unit 100 (shown in FIG. 1). Is done.
　また、ケーシング２３１の底フレーム２３１ａに設けられた接続口２３２に、一端が接続された排出ホース２３０によって、ケーシング２３１内と床下を連通している。上記排出ホース２３０は、排出部材の一例である。 Further, the inside of the casing 231 is communicated with the under floor by a discharge hose 230 having one end connected to a connection port 232 provided in the bottom frame 231a of the casing 231. The discharge hose 230 is an example of a discharge member.
　図３は上記冷温水供給ユニット２００の構成を示しており、前面パネル２３１ｃ(図２に示す)と天板２３１ｄ(図２に示す)を外した状態を正面から見た図である。図３では、図２と同一の構成部には同一参照番号を付している。また、図３において、２３８,２３９は、水抜き栓である。 FIG. 3 shows the configuration of the cold / hot water supply unit 200, and is a view of the front panel 231c (shown in FIG. 2) and the top plate 231d (shown in FIG. 2) as viewed from the front. 3, the same components as those in FIG. 2 are denoted by the same reference numerals. In FIG. 3, reference numerals 238 and 239 denote drain plugs.
　この冷温水供給ユニット２００は、直方体のケーシング２３１と、このケーシング２３１の底フレーム２３１ａに取り付けられた循環ポンプ２０３と、ケーシング２３１内の左側に設置された水熱交換器２０１を有している。また、ケーシング２３１内の水熱交換器２０１の右側の電装品部に、制御基板の一例としての冷温水供給ユニット用制御装置２２０を取り付けている。 The cold / hot water supply unit 200 has a rectangular parallelepiped casing 231, a circulation pump 203 attached to the bottom frame 231 a of the casing 231, and a water heat exchanger 201 installed on the left side in the casing 231. In addition, a cold / hot water supply unit controller 220 as an example of a control board is attached to the electrical component part on the right side of the water heat exchanger 201 in the casing 231.
　上記水熱交換器２０１は、室外機１００(図１に示す)の圧縮機１０１から供給される高温高圧の冷媒が、冷媒配管接続部２３４から冷媒配管２３４ａを介して供給される。これに対して、水熱交換器２０１内で熱交換した後の低温高圧の冷媒は、冷媒配管２３５ａを介して冷媒配管接続部２３５から電動膨張弁１０４(図１に示す)に供給される。 In the water heat exchanger 201, the high-temperature and high-pressure refrigerant supplied from the compressor 101 of the outdoor unit 100 (shown in FIG. 1) is supplied from the refrigerant pipe connection part 234 via the refrigerant pipe 234a. In contrast, the low-temperature and high-pressure refrigerant after heat exchange in the water heat exchanger 201 is supplied from the refrigerant pipe connection portion 235 to the electric expansion valve 104 (shown in FIG. 1) via the refrigerant pipe 235a.
　上記冷媒配管２３４ａに圧力センサ２１５を配設すると共に、冷媒配管２３５ａに受液器２１６を配設している。 The pressure sensor 215 is disposed in the refrigerant pipe 234a, and the liquid receiver 216 is disposed in the refrigerant pipe 235a.
　上記循環ポンプ２０３の吸入口２０３ａと水熱交換器２０１の給湯口２０１ａが給湯管２３６を介して接続されている。また、循環ポンプ２０３の吐出口２０３ｂと往きヘッダ２０４(図１に示す)が吐出管２３７を介して接続されている。さらに、水熱交換器２０１の吸水口２０１ｂと戻りヘッダ２０５(図１に示す)が吸水管２４０を介して接続されている。 The suction port 203 a of the circulation pump 203 and the hot water supply port 201 a of the water heat exchanger 201 are connected via a hot water supply pipe 236. Further, the discharge port 203b of the circulation pump 203 and the forward header 204 (shown in FIG. 1) are connected via a discharge pipe 237. Further, the water inlet 201 b of the water heat exchanger 201 and the return header 205 (shown in FIG. 1) are connected via a water absorption pipe 240.
　上記構成の温調システムにおいて、室外機１００(図１に示す)の圧縮機１０１が駆動されると、四路切換弁１０２が実線の切換位置の状態で圧縮機１０１からの高温高圧の冷媒が水熱交換器２０１に供給される。そして、水熱交換器２０１内において、戻りヘッダ２０５および吸水管２４０を介して供給される水と熱交換を行う。次に、熱交換後の低温高圧の液冷媒が水熱交換器２０１から電動膨張弁１０４(図１に示す)に送出される。一方、水熱交換器２０１において熱交換後の温水は、循環ポンプ２０３の駆動による負圧によって給湯管２３６を介して吸入口２０３ａから循環ポンプ２０３に吸入され、吐出口２０３ｂから吐出管２３７および往きヘッダ２０４(図１に示す)を介して供給される。 In the temperature control system configured as described above, when the compressor 101 of the outdoor unit 100 (shown in FIG. 1) is driven, the high-temperature and high-pressure refrigerant from the compressor 101 flows while the four-way switching valve 102 is in the solid line switching position. It is supplied to the water heat exchanger 201. In the water heat exchanger 201, heat exchange is performed with water supplied via the return header 205 and the water absorption pipe 240. Next, the low-temperature and high-pressure liquid refrigerant after the heat exchange is sent from the water heat exchanger 201 to the electric expansion valve 104 (shown in FIG. 1). On the other hand, the hot water after heat exchange in the water heat exchanger 201 is sucked into the circulation pump 203 from the suction port 203a through the hot water supply pipe 236 by negative pressure generated by driving the circulation pump 203, and from the discharge port 203b to the discharge pipe 237. Supplied via header 204 (shown in FIG. 1).
　上記構成の冷温水供給ユニット２００によれば、図２,図３に示すように、水熱交換器２０１が収容されたケーシング２３１内と床下を排出ホース２３０(排出部材)により連通することによって、室内に設置された状態でケーシング２３１内に可燃性冷媒が急速漏洩した場合、ケーシング２３１内に漏洩した直後の可燃性冷媒のうちの多くは蒸発しきらずに液体のままケーシング２３１内から排出ホース２３０を介して流れ落ちて床下に速やかに排出されるので、可燃性冷媒の漏洩時に室内への冷媒漏れを防ぐことができる。したがって、室内に可燃性冷媒が滞留してガス濃度が高くなって発火などのリスクが高まるのを抑制できる。 According to the cold / hot water supply unit 200 having the above-described configuration, as shown in FIGS. 2 and 3, the inside of the casing 231 in which the water heat exchanger 201 is accommodated and the under floor are communicated by the discharge hose 230 (discharge member). When the flammable refrigerant rapidly leaks into the casing 231 while being installed indoors, most of the flammable refrigerant immediately after leaking into the casing 231 does not evaporate and remains in the liquid state as the discharge hose 230. Since the refrigerant flows down and is quickly discharged under the floor, leakage of the refrigerant into the room can be prevented when the combustible refrigerant leaks. Therefore, it is possible to suppress the risk of ignition and the like due to flammable refrigerant staying in the room and increasing the gas concentration.
　また、排出部材に排出ホース２３０を用いることによって、ケーシング２３１内に漏洩した可燃性冷媒を床下に導く経路を容易に設けることができ、可撓性を有するホースを用いることで設置の自由度が高まると共に作業性が向上する。 Further, by using the discharge hose 230 as the discharge member, it is possible to easily provide a path for guiding the flammable refrigerant leaked into the casing 231 under the floor. By using the flexible hose, the degree of freedom of installation can be increased. Workability improves with increasing.
　また、上記ケーシング２３１内に漏洩した可燃性冷媒(特に液冷媒)がケーシング２３１内の底部に溜まるので、ケーシング２３１の下部と床下とを排出ホース２３０(排出部材)により連通することによって、漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシング２３１の下部から排出ホース２３０を介して床下に速やかに排出することができる。 In addition, since the combustible refrigerant (particularly liquid refrigerant) leaked into the casing 231 accumulates at the bottom of the casing 231, it leaks by connecting the lower part of the casing 231 and the floor under the floor with the discharge hose 230 (discharge member). The liquid refrigerant occupying most of the combustible refrigerant can be quickly discharged under the floor from the lower portion of the casing 231 through the discharge hose 230.
　また、上記ケーシング２３１内の水熱交換器２０１の下部に設けられた接続口２３２に、排出ホース２３０(排出部材)を接続することによって、水熱交換器２０１の冷媒配管接続部分から漏れ出た可燃性冷媒は、水熱交換器２０１の下側に流れ落ちて、下側の接続口２３２を介して排出ホース２３０により床下に排出することができる。 Further, by connecting a discharge hose 230 (discharge member) to the connection port 232 provided in the lower portion of the water heat exchanger 201 in the casing 231, the leakage from the refrigerant pipe connection portion of the water heat exchanger 201 occurred. The combustible refrigerant flows down to the lower side of the water heat exchanger 201 and can be discharged under the floor by the discharge hose 230 through the lower connection port 232.
　ここで、水熱交換器２０１の冷媒配管接続部分は、水熱交換器２０１、圧力センサ２１５、受液器２１６、冷媒配管接続部２３４,２３５の夫々に冷媒配管が接続されるロウ付け部分である。 Here, the refrigerant pipe connection portion of the water heat exchanger 201 is a brazed portion where the refrigerant pipe is connected to each of the water heat exchanger 201, the pressure sensor 215, the liquid receiver 216, and the refrigerant pipe connection portions 234 and 235. is there.
　〔第２実施形態〕
　図４はこの発明の第２実施形態の温調システムの冷温水供給ユニット２００の正面図を示している。この冷温水供給ユニット２００は、第１実施形態の冷温水供給ユニット２００と同一の構成をしており、同一構成部には同一参照番号を付している。 [Second Embodiment]
FIG. 4 shows a front view of the cold / hot water supply unit 200 of the temperature control system of the second embodiment of the present invention. The cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment, and the same reference numerals are given to the same components.
　また、ケーシング２３１内の下側に液体受け部材２５１を配置している。この液体受け部材２５１の最も低い位置が接続口２３２に接続されている。これによって、排出ホース２３０を介して冷温水供給ユニット２００のケーシング２３１内部と床下とを連通している。 Further, a liquid receiving member 251 is disposed on the lower side in the casing 231. The lowest position of the liquid receiving member 251 is connected to the connection port 232. Thereby, the inside of the casing 231 of the cold / hot water supply unit 200 and the underfloor are communicated with each other via the discharge hose 230.
　上記液体受け部材２５２の底面の傾斜角度θ１[deg]を所定角度θ１min[deg]よりも大きい値に設定している。この所定角度θ１min[deg]は、ケーシング２３１内で可燃性冷媒が急速漏洩したときの冷媒量やケーシング２３１の構成などに応じて適宜決定される。ここで、傾斜角度θ１は、液体受け部材２５２の底面と水平面とのなす角度である。 The inclination angle θ1 [deg] of the bottom surface of the liquid receiving member 252 is set to a value larger than the predetermined angle θ1 min [deg]. The predetermined angle θ1 min [deg] is appropriately determined according to the refrigerant amount when the flammable refrigerant rapidly leaks in the casing 231, the configuration of the casing 231, and the like. Here, the inclination angle θ1 is an angle formed between the bottom surface of the liquid receiving member 252 and the horizontal plane.
　上記第２実施形態の冷温水供給ユニット２００は、第１実施形態の冷温水供給ユニット２００と同一の効果を有する。 The cold / hot water supply unit 200 of the second embodiment has the same effect as the cold / hot water supply unit 200 of the first embodiment.
　また、上記液体受け部材２５１の傾斜した底面によって、ケーシング２３１内で漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を、排出ホース２３０が接続された接続口２３２にスムーズに案内することができる。 Further, the inclined bottom surface of the liquid receiving member 251 smoothly guides the flammable refrigerant leaked in the casing 231 (or liquid such as condensed water when supplying cold water) to the connection port 232 to which the discharge hose 230 is connected. can do.
　なお、上記第２実施形態では、ケーシング２３１内の下側に底面が傾斜した液体受け部材２５１を配置したが、ケーシング２３１内の底フレーム２３１ａの底面を傾斜させて、排出ホース２３０が接続された接続口２３２にスムーズに案内するようにしてもよい。また、ケーシング２３１内の下側に配置した液体受け部材２５１は、ケーシング２３１の底面のほぼ全てに渡って設けたが、少なくともケーシング２３１内の冷媒配管接続部分の下側の領域に液体受け部材を配置してもよい。 In the second embodiment, the liquid receiving member 251 whose bottom surface is inclined is arranged on the lower side in the casing 231, but the bottom surface of the bottom frame 231 a in the casing 231 is inclined to connect the discharge hose 230. You may make it guide smoothly to the connection port 232. In addition, the liquid receiving member 251 disposed on the lower side in the casing 231 is provided over almost the entire bottom surface of the casing 231, but the liquid receiving member is provided at least in the lower region of the refrigerant pipe connection portion in the casing 231. You may arrange.
　〔第３実施形態〕
　図５はこの発明の第３実施形態の温調システムの冷温水供給ユニット２００の正面図を示している。この冷温水供給ユニット２００は、第１実施形態の冷温水供給ユニット２００と同一の構成をしており、同一構成部には同一参照番号を付している。 [Third Embodiment]
FIG. 5: has shown the front view of the cold / hot water supply unit 200 of the temperature control system of 3rd Embodiment of this invention. The cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment, and the same reference numerals are given to the same components.
　この第３実施形態の冷温水供給ユニット２００は、図５に示すように、ケーシング２３１の下面側から床面に延びる置台２５０を備えている。上記置台２５０は、冷媒配管Ｌ１,Ｌ２および排出ホース２３０の一部を収容する箱状の通路を構成している。この冷媒配管Ｌ１,Ｌ２は、床４００に設けられた穴４００ａを介して床４００の下側に配設され、室外機１００(図１に示す)に接続される。 The cold / hot water supply unit 200 of this 3rd Embodiment is provided with the mounting base 250 extended to a floor surface from the lower surface side of the casing 231, as shown in FIG. The mounting table 250 constitutes a box-shaped passage that accommodates a part of the refrigerant pipes L 1 and L 2 and the discharge hose 230. The refrigerant pipes L1 and L2 are arranged below the floor 400 through holes 400a provided in the floor 400, and are connected to the outdoor unit 100 (shown in FIG. 1).
　上記排出ホース２３０と置台２５０で排出部材を構成している。 The discharge hose 230 and the mounting base 250 constitute a discharge member.
　また、置台２５０内の下側に液体受け部材２５２を配置している。この液体受け部材２５２の最も低い位置に設けられた接続口２５２ａに排出ホース２３０の上端を接続することによって、置台２５０と排出ホース２３０を介して冷温水供給ユニット２００のケーシング２３１内部と床下とを連通している。 Further, a liquid receiving member 252 is arranged on the lower side in the mounting table 250. By connecting the upper end of the discharge hose 230 to the connection port 252 a provided at the lowest position of the liquid receiving member 252, the inside of the casing 231 of the cold / hot water supply unit 200 and the underfloor can be connected via the mounting table 250 and the discharge hose 230. Communicate.
　上記液体受け部材２５２の底面の傾斜角度θ２[deg]を所定角度θ２min[deg]よりも大きい値に設定している。この所定角度θ２min[deg]は、冷温水供給ユニット２００から可燃性冷媒が急速漏洩したときの冷媒量やケーシング２３１および置台２５０の構成などに応じて適宜決定される。 The inclination angle θ2 [deg] of the bottom surface of the liquid receiving member 252 is set to a value larger than the predetermined angle θ2 min [deg]. The predetermined angle θ2min [deg] is appropriately determined according to the refrigerant amount when the flammable refrigerant rapidly leaks from the cold / hot water supply unit 200, the configurations of the casing 231 and the mounting table 250, and the like.
　上記第３実施形態では、置台２５０内の下側に液体受け部材２５２を配置したが、液体受け部材または排出ホースの少なくとも一方を備えない構成でもよい。この場合でも、箱状の通路を構成する置台によりケーシング内から漏洩した可燃性冷媒を床下に案内することができる。 In the third embodiment, the liquid receiving member 252 is disposed on the lower side in the mounting table 250. However, the liquid receiving member or the discharge hose may not be provided. Even in this case, the flammable refrigerant leaked from the casing can be guided under the floor by the pedestal constituting the box-shaped passage.
　上記第３実施形態の冷温水供給ユニット２００は、第１実施形態の冷温水供給ユニット２００と同一の効果を有する。 The cold / hot water supply unit 200 of the third embodiment has the same effect as the cold / hot water supply unit 200 of the first embodiment.
　また、壁面に設置するタイプの冷温水供給ユニット２００において、ケーシング２３１下部に箱状の通路として置台２５０を用いることによって、壁面に設置したケーシング２３１の下側空間(配管などが敷設される空間)を置台２５０で覆って、美観を損ねることなく、ケーシング２３１内に漏洩した可燃性冷媒を床下に導く通路を形成できる。 Further, in the cold / hot water supply unit 200 of the type installed on the wall surface, by using the pedestal 250 as a box-shaped passage in the lower part of the casing 231, a lower space of the casing 231 installed on the wall surface (a space in which piping or the like is laid) Is covered with the pedestal 250, and a passage for guiding the combustible refrigerant leaked into the casing 231 under the floor can be formed without impairing the beauty.
　また、上記置台２５０内に配置された液体受け部材２５２により、漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を、排出ホース２３０(排出部材)が接続された接続口２５２ａに確実に案内することができる。 Further, the liquid receiving member 252 disposed in the mounting table 250 allows the leaked flammable refrigerant (or liquid such as condensed water when cold water is supplied) to the connection port 252a to which the discharge hose 230 (discharge member) is connected. It can be surely guided.
　また、上記液体受け部材２５２の傾斜した底面によって、ケーシング２３１下部から漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を、排出ホース２３０が接続された接続口２５２ａにスムーズに案内することができる。 Further, the inclined bottom surface of the liquid receiving member 252 smoothly guides the flammable refrigerant leaked from the lower portion of the casing 231 (or liquid such as condensed water when supplying cold water) to the connection port 252a to which the discharge hose 230 is connected. can do.
　また、上記ケーシング２３１外において、冷媒配管Ｌ１,Ｌ２が接続された冷媒配管接続部２３４,２３５から可燃性冷媒が漏れ出ても、置台２５０内で受けて排出ホース２３０により床下に排出することができ、より安全性が高まる。 In addition, even if the flammable refrigerant leaks from the refrigerant pipe connection parts 234 and 235 to which the refrigerant pipes L1 and L2 are connected outside the casing 231, it can be received in the mounting table 250 and discharged to the floor by the discharge hose 230. Yes, it is safer.
　〔第４実施形態〕
　図６はこの発明の第４実施形態の温調システムの冷温水供給ユニット２００の構成を示す図を示している。この冷温水供給ユニット２００は、排出ホース２３０の接続部分と液体受け部材２６０を除いて第１実施形態の冷温水供給ユニット２００と同一の構成をしており、同一構成部には同一参照番号を付している。 [Fourth Embodiment]
FIG. 6 is a diagram showing the configuration of the cold / hot water supply unit 200 of the temperature control system of the fourth embodiment of the present invention. The cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment except for the connection portion of the discharge hose 230 and the liquid receiving member 260, and the same reference numerals are given to the same components. It is attached.
　この第４実施形態の冷温水供給ユニット２００は、図６に示すように、ケーシング２３１内の水熱交換器２０１よりも下側に液体受け部材２６０を配置している。 In the cold / hot water supply unit 200 of the fourth embodiment, as shown in FIG. 6, a liquid receiving member 260 is arranged below the water heat exchanger 201 in the casing 231.
　この液体受け部材２６０の接続口２６０ａに、排出ホース２３０の上端が接続されている。この液体受け部材２６０で受けた結露水や漏洩冷媒などの液体を排出ホース２３０の接続口２６０ａに案内する。排出ホース２３０は、排出部材の一例である。 The upper end of the discharge hose 230 is connected to the connection port 260a of the liquid receiving member 260. Liquids such as condensed water and leakage refrigerant received by the liquid receiving member 260 are guided to the connection port 260a of the discharge hose 230. The discharge hose 230 is an example of a discharge member.
　上記第４実施形態の冷温水供給ユニット２００は、第１実施形態の冷温水供給ユニット２００と同一の効果を有する。 The cold / hot water supply unit 200 of the fourth embodiment has the same effect as the cold / hot water supply unit 200 of the first embodiment.
　また、上記ケーシング２３１内に配置された液体受け部材２６０により、漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を、排出ホース２３０(排出部材)が接続された接続口２６０ａに確実に案内することができる。 Further, the liquid receiving member 260 disposed in the casing 231 causes the leaked combustible refrigerant (or liquid such as condensed water when cold water is supplied) to the connection port 260a to which the discharge hose 230 (discharge member) is connected. It can be surely guided.
　なお、上記液体受け部材２６０の底面を傾斜させて、漏洩した可燃性冷媒などの液体を、排出ホース２３０(排出部材)が接続された接続口２５２ａにスムーズに案内するようにしてもよい。 Note that the bottom surface of the liquid receiving member 260 may be inclined to smoothly guide the leaked liquid such as a combustible refrigerant to the connection port 252a to which the discharge hose 230 (discharge member) is connected.
　〔第５実施形態〕
　図７はこの発明の第５実施形態の温調システムの冷温水供給ユニット２００の構成を示している。この冷温水供給ユニット２００は、排出ホース２３０の接続部分と第１カバー部材２７０を除いて第１実施形態の冷温水供給ユニット２００と同一の構成をしており、同一構成部には同一参照番号を付している。 [Fifth Embodiment]
FIG. 7 shows the configuration of the cold / hot water supply unit 200 of the temperature control system according to the fifth embodiment of the present invention. The cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the first embodiment except for the connection portion of the discharge hose 230 and the first cover member 270, and the same reference numerals denote the same components. Is attached.
　この第５実施形態の冷温水供給ユニット２００は、図７に示すように、ケーシング２３１の底フレーム２３１ａに、冷媒配管接続部２３４と冷媒配管接続部２３５を覆うように第１カバー部材２７０を取り付けている。この第１カバー部材２７０は、底フレーム２３１ａの接続口２４１に接続されており、冷媒配管接続部２３４に接続された冷媒配管Ｌ１および冷媒配管接続部２３５に接続された冷媒配管Ｌ２が貫通する穴２７０ａ,２７０ｂを有する。また、第１カバー部材２７０は、排出ホース２３０の上端が接続された接続穴２７０ｃを有する。なお、第１カバー部材２７０の穴２７０ａと冷媒配管Ｌ１との隙間、および、第１カバー部材２７０の穴２７０ｂと冷媒配管Ｌ２との隙間は、シール剤などにより密閉している。 In the cold / hot water supply unit 200 of the fifth embodiment, as shown in FIG. 7, a first cover member 270 is attached to the bottom frame 231a of the casing 231 so as to cover the refrigerant pipe connection part 234 and the refrigerant pipe connection part 235. ing. The first cover member 270 is connected to the connection port 241 of the bottom frame 231a, and is a hole through which the refrigerant pipe L1 connected to the refrigerant pipe connection part 234 and the refrigerant pipe L2 connected to the refrigerant pipe connection part 235 pass. 270a and 270b. The first cover member 270 has a connection hole 270c to which the upper end of the discharge hose 230 is connected. The gap between the hole 270a of the first cover member 270 and the refrigerant pipe L1, and the gap between the hole 270b of the first cover member 270 and the refrigerant pipe L2 are sealed with a sealant or the like.
　上記排出ホース２３０と第１カバー部材２７０で排出部材を構成している。 The discharge hose 230 and the first cover member 270 constitute a discharge member.
　なお、第５実施形態の冷温水供給ユニット２００において、冷温水供給ユニット用制御装置２２０が取り付けられた電装品部を覆う基板カバー部材２２１を取り付けてもよい。これにより、ケーシング２３１内に漏れた冷媒に対して電装品部の発火点を隔離することができ、安全性が向上する。 In addition, in the cold / hot water supply unit 200 of 5th Embodiment, you may attach the board | substrate cover member 221 which covers the electrical component part to which the control apparatus 220 for cold / hot water supply units was attached. Thereby, the ignition point of the electrical component part can be isolated from the refrigerant leaking into the casing 231 and the safety is improved.
　また、図８は図７のVII－VII線から見た第１カバー部材２７０を含む要部の断面図を示している。この第１カバー部材２７０は、前側カバー部２７１と後側カバー部２７２を有する。前側カバー部２７１の上端にフック２７１ａを設けている。また、後側カバー部２７２の上端にフック２７２ａを設けている。 FIG. 8 is a cross-sectional view of the main part including the first cover member 270 as seen from the line VII-VII in FIG. The first cover member 270 has a front cover part 271 and a rear cover part 272. A hook 271 a is provided at the upper end of the front cover portion 271. A hook 272a is provided at the upper end of the rear cover portion 272.
　ケーシング２３１の底フレーム２３１ａに設けられた長穴状の接続口２４１に冷媒配管２３４ａ,２３５ａ(図８では２３５ａのみを示す)を挿通している。この接続口２４１の対向する縁の一方に前側カバー部２７１のフック２７１ａを係止すると共に、接続口２４１の対向する縁の他方に後側カバー部２７２のフック２７２ａを係止している。 Refrigerant piping 234a, 235a (only 235a is shown in FIG. 8) is inserted through a long hole-like connection port 241 provided in the bottom frame 231a of the casing 231. The hook 271a of the front cover portion 271 is locked to one of the opposing edges of the connection port 241, and the hook 272a of the rear cover portion 272 is locked to the other of the opposing edges of the connection port 241.
　上記構成の冷温水供給ユニット２００によれば、ケーシング２３１内の冷媒配管接続部分よりも下側に設けられた接続口２４１に排出部材(第１カバー部材２７０と排出ホース２３０)が接続され、ケーシング２３１内に漏洩した可燃性冷媒を接続口２４１から第１カバー部材２７０と排出ホース２３０によりケーシング２３１外に排出することによって、室内に設置された状態でケーシング２３１内に可燃性冷媒が急速漏洩した場合、ケーシング２３１内に漏洩した直後の可燃性冷媒のうちの多くは蒸発しきらずに液体のままであるので、液体の可燃性冷媒がケーシング２３１内から第１カバー部材２７０と排出ホース２３０を介して流れ落ちて床下に速やかに排出することが可能になる。したがって、可燃性冷媒の漏洩時に室内への冷媒漏れを防ぐことができ、室内に可燃性冷媒が滞留してガス濃度が高くなって発火などのリスクが高まるのを抑制できる。 According to the cold / hot water supply unit 200 having the above configuration, the discharge member (the first cover member 270 and the discharge hose 230) is connected to the connection port 241 provided below the refrigerant pipe connection portion in the casing 231. The flammable refrigerant leaked into the casing 231 is discharged from the connection port 241 to the outside of the casing 231 through the first cover member 270 and the discharge hose 230, so that the flammable refrigerant rapidly leaks into the casing 231 while being installed indoors. In this case, since most of the combustible refrigerant immediately after leaking into the casing 231 does not evaporate and remains liquid, the liquid combustible refrigerant passes through the first cover member 270 and the discharge hose 230 from the casing 231. It is possible to flow down and quickly discharge under the floor. Therefore, it is possible to prevent the refrigerant from leaking into the room when the combustible refrigerant leaks, and to suppress the risk of ignition and the like due to the flammable refrigerant staying in the room and increasing the gas concentration.
　なお、気化した上記可燃性冷媒が空気よりも重い場合、気体の可燃性冷媒も下方に流れてケーシング２３１内から第１カバー部材２７０と排出ホース２３０を介して下方に排出される。 When the vaporized combustible refrigerant is heavier than air, the gaseous combustible refrigerant also flows downward and is discharged downward from the casing 231 through the first cover member 270 and the discharge hose 230.
　また、上記ケーシング２３１内に漏洩した可燃性冷媒(特に液冷媒)がケーシング２３１内の底部に溜まるので、ケーシング２３１の下部からの漏洩冷媒を第１カバー部材２７０により排出することで、ケーシング２３１内に漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシング２３１の下部から第１カバー部材２７０と排出ホース２３０を介して床下に速やかに排出することができる。 Further, since the flammable refrigerant (particularly liquid refrigerant) leaked into the casing 231 is accumulated at the bottom of the casing 231, the leakage refrigerant leaked from the lower portion of the casing 231 is discharged by the first cover member 270. The liquid refrigerant occupying most of the combustible refrigerant leaked to the bottom can be quickly discharged from the lower part of the casing 231 to the floor under the first cover member 270 and the discharge hose 230.
　また、上記第１カバー部材２７０がケーシング２３１外の冷媒配管接続部２３４,２３５を覆っていることによって、そのケーシング２３１外の冷媒配管接続部２３４,２３５から可燃性冷媒が漏れ出ても第１カバー部材２７０内で受けて排出することができ、より安全性が高まる。 In addition, since the first cover member 270 covers the refrigerant pipe connection portions 234 and 235 outside the casing 231, even if the combustible refrigerant leaks from the refrigerant pipe connection portions 234 and 235 outside the casing 231, the first cover member 270 covers the refrigerant pipe connection portions 234 and 235 outside the casing 231. It can be received and discharged in the cover member 270, and safety is further increased.
　また、上記ケーシング２３１内かつ第１カバー部材２７０よりも上側に冷温水供給ユニット用制御装置２２０(制御基板)を配置することによって、ケーシング２３１内の底部に漏れた可燃性冷媒に対して冷温水供給ユニット用制御装置２２０が有するような発火点を上方に引き離すことができ、安全性が向上する。 Further, by arranging the cold / hot water supply unit control device 220 (control board) in the casing 231 and above the first cover member 270, cold / hot water is leaked from the combustible refrigerant leaking to the bottom of the casing 231. The ignition point as the supply unit controller 220 has can be pulled upward, and safety is improved.
　また、上記水熱交換器２０１が収容されたケーシング２３１内と床下を第１カバー部材２７０,排出ホース２３０(排出部材)により連通することによって、室内に設置された状態でケーシング２３１内に可燃性冷媒が急速漏洩した場合、ケーシング２３１内に漏洩した直後の可燃性冷媒のうちの多くは蒸発しきらずに液体のままケーシング２３１内から排出ホース２３０を介して流れ落ちて床下に速やかに排出される。 Further, the casing 231 in which the water heat exchanger 201 is accommodated communicates with the under floor by the first cover member 270 and the discharge hose 230 (discharge member), so that the casing 231 is combustible in a state of being installed indoors. When the refrigerant leaks rapidly, most of the combustible refrigerant immediately after leaking into the casing 231 does not completely evaporate but flows down from the casing 231 via the discharge hose 230 and is quickly discharged under the floor.
　また、排出部材に排出ホース２３０を用いることによって、ケーシング２３１内に漏洩した可燃性冷媒を床下に導く経路を容易に設けることができ、可撓性を有するホースを用いることで設置の自由度が高まると共に作業性が向上する。 Further, by using the discharge hose 230 as the discharge member, it is possible to easily provide a path for guiding the flammable refrigerant leaked into the casing 231 under the floor. By using the flexible hose, the degree of freedom of installation can be increased. Workability improves with increasing.
　また、上記ケーシング２３１内に漏洩した可燃性冷媒(特に液冷媒)がケーシング２３１内の底部に溜まるので、ケーシング２３１の下部と床下とを第１カバー部材２７０,排出ホース２３０(排出部材)により連通することによって、漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシング２３１の下部から第１カバー部材２７０,排出ホース２３０を介して床下に速やかに排出することができる。 Further, since the combustible refrigerant (particularly liquid refrigerant) leaked into the casing 231 is accumulated at the bottom of the casing 231, the lower portion of the casing 231 and the under floor are communicated by the first cover member 270 and the discharge hose 230 (discharge member). By doing so, the liquid refrigerant which occupies most of the leaked combustible refrigerant can be quickly discharged from the lower part of the casing 231 under the floor via the first cover member 270 and the discharge hose 230.
　なお、第１カバー部材２７０に液体を案内するように、ケーシング２３１内の底部を傾斜させてもよい。この場合、ケーシング２３１の傾斜した底面によって、ケーシング２３１内で漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を接続口２４１にスムーズに案内することができる。 Note that the bottom of the casing 231 may be inclined so as to guide the liquid to the first cover member 270. In this case, the inclined bottom surface of the casing 231 can smoothly guide the combustible refrigerant leaked in the casing 231 (or liquid such as condensed water when cold water is supplied) to the connection port 241.
　また、上記第５実施形態の冷温水供給ユニット２００において、第２実施形態の図４に示す液体受け部材２５１をケーシング２３１内の下側に配置してもよい。この場合、液体受け部材２５１の傾斜した底面によって、ケーシング２３１内で漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を接続口２４１にスムーズに案内することができる。 Further, in the cold / hot water supply unit 200 of the fifth embodiment, the liquid receiving member 251 shown in FIG. 4 of the second embodiment may be disposed on the lower side in the casing 231. In this case, the inclined bottom surface of the liquid receiving member 251 can smoothly guide the combustible refrigerant leaked in the casing 231 (or a liquid such as condensed water when cold water is supplied) to the connection port 241.
　〔第６実施形態〕
　図９はこの発明の第６実施形態の温調システムの冷温水供給ユニット２００の構成を示している。この第６実施形態の冷温水供給ユニット２００は、第２カバー部材２８０を除いて第５実施形態の冷温水供給ユニット２００と同一の構成をしており、同一構成部には同一参照番号を付している。 [Sixth Embodiment]
FIG. 9 shows the configuration of the cold / hot water supply unit 200 of the temperature control system according to the sixth embodiment of the present invention. The cold / hot water supply unit 200 of the sixth embodiment has the same configuration as the cold / hot water supply unit 200 of the fifth embodiment except for the second cover member 280, and the same reference numerals are given to the same components. is doing.
　この第６実施形態の冷温水供給ユニット２００は、図９に示すように、ケーシング２３１の底フレーム２３１ａに冷媒配管接続部２３４と冷媒配管接続部２３５を覆う第１カバー部材２７０を取り付けている。 In the cold / hot water supply unit 200 of the sixth embodiment, a first cover member 270 that covers the refrigerant pipe connection part 234 and the refrigerant pipe connection part 235 is attached to the bottom frame 231a of the casing 231 as shown in FIG.
　また、ケーシング２３１内に、冷媒回路の冷媒配管接続部分を覆う第２カバー部材２８０を取り付けている。この第２カバー部材２８０は、断熱材(例えば発泡樹脂)からなり、本体部２８０ａと、本体部２８０ａの下端から下方に延びる案内部２８０ｂを有する。第２カバー部材２８０の本体部２８０ａは、水熱交換器２０１の前面側の一部(圧力センサ２１５,受液器２１６を含む)すなわち冷媒配管接続部分を覆っている。 Further, a second cover member 280 that covers the refrigerant pipe connection portion of the refrigerant circuit is attached in the casing 231. The second cover member 280 is made of a heat insulating material (for example, foamed resin), and includes a main body portion 280a and a guide portion 280b extending downward from the lower end of the main body portion 280a. The main body 280a of the second cover member 280 covers a part of the front side of the water heat exchanger 201 (including the pressure sensor 215 and the liquid receiver 216), that is, a refrigerant pipe connection portion.
　図１０は図９のIX－IX線から見た断面図を示しており、図９と同一の構成部には同一参照番号を付している。 FIG. 10 shows a sectional view taken along line IX-IX in FIG. 9, and the same reference numerals are given to the same components as those in FIG.
　図１０に示すように、ケーシング２３１内の後面側に背面断熱部材２９０を取り付けている。この背面断熱部材２９０に設けられた縦長の凹部２９０ａ内に水熱交換器２０１が嵌め込まれている。 As shown in FIG. 10, a rear heat insulating member 290 is attached to the rear surface side in the casing 231. The water heat exchanger 201 is fitted in a vertically long recess 290a provided on the back heat insulating member 290.
　ここで、圧力センサ２１５が配設された冷媒配管２３４ａ(図３に示す)や、受液器２１６が配設された冷媒配管２３５ａ(図３に示す)において、ロウ付けされた配管接続部分から可燃性冷媒が漏洩した場合、図１０の矢印に示すように、漏洩した可燃性冷媒は、第２カバー部材２８０の本体部２８０ａ内を下方に流れて、本体部２８０ａの下端から案内部２８０ｂを介して第１カバー部材２７０内に案内される。この後、第１カバー部材２７０の接続穴２７０ｃ(図７に示す)に接続された排出ホース２３０を介して床下に排出される。 Here, in the refrigerant pipe 234a (shown in FIG. 3) provided with the pressure sensor 215 and the refrigerant pipe 235a (shown in FIG. 3) provided with the liquid receiver 216, from the brazed pipe connection portion. When the flammable refrigerant leaks, the leaked flammable refrigerant flows downward in the main body portion 280a of the second cover member 280 as shown by the arrow in FIG. 10, and passes through the guide portion 280b from the lower end of the main body portion 280a. Through the first cover member 270. Thereafter, the air is discharged under the floor through the discharge hose 230 connected to the connection hole 270c (shown in FIG. 7) of the first cover member 270.
　上記排出ホース２３０と第１カバー部材２７０で排出部材を構成している。第１カバー部材２７０は、前側カバー部２７１と後側カバー部２７２を有する。 The discharge hose 230 and the first cover member 270 constitute a discharge member. The first cover member 270 includes a front cover part 271 and a rear cover part 272.
　図１１は図９の第１カバー部材２７０を含む要部の拡大断面図を示している。図１１において、第５実施形態の図８と同一の構成部には同一参照番号を付している。 FIG. 11 shows an enlarged cross-sectional view of the main part including the first cover member 270 of FIG. In FIG. 11, the same reference numerals are assigned to the same components as those in FIG. 8 of the fifth embodiment.
　図１１に示すように、上方の配管接続部分から漏洩した可燃性冷媒は、第２カバー部材２８０の案内部２８０ｂに案内されて、底フレーム２３１ａに設けられた接続口２４１を介して第１カバー部材２７０内に流れ落ちる。 As shown in FIG. 11, the flammable refrigerant leaked from the upper pipe connection portion is guided to the guide portion 280b of the second cover member 280, and the first cover via the connection port 241 provided in the bottom frame 231a. It flows down into the member 270.
　図１２は上記冷温水供給ユニット２００の分解斜視図を示している。図１２では、前面パネル２３１ｃ(図２に示す)と天板２３１ｄ(図２に示す)を省略している。 FIG. 12 shows an exploded perspective view of the cold / hot water supply unit 200. In FIG. 12, the front panel 231c (shown in FIG. 2) and the top plate 231d (shown in FIG. 2) are omitted.
　上記冷温水供給ユニット２００は、図１２に示すように、底フレーム２３１ａと、その底フレーム２３１ａの背面側と左側面および右側面を囲う背面パネル２３１ｂと、背面パネル２３１ｂに嵌め込まれた背面断熱部材２９０と、背面断熱部材２９０の左側に設けられた縦長の凹部２９０ａ内に嵌め込まれた水熱交換器２０１と、背面断熱部材２９０の右側に設けられた凹部２９０ｂ内に後面側が嵌め込まれた膨張タンク２０２と、膨張タンク２０２の前面側を覆う前面断熱部材２９５と、その前面断熱部材２９５の前面に取り付けられた冷温水供給ユニット用制御装置２２０と、冷媒回路の冷媒配管接続部分を覆う第２カバー部材２８０と、底フレーム２３１ａの下側に取り付けられた第１カバー部材２７０(前側カバー部２７１,後側カバー部２７２)とを有する。 As shown in FIG. 12, the cold / hot water supply unit 200 includes a bottom frame 231a, a back panel 231b surrounding the back side, left side, and right side of the bottom frame 231a, and a back heat insulating member fitted into the back panel 231b. 290, a hydrothermal exchanger 201 fitted in a vertically long recess 290a provided on the left side of the back heat insulation member 290, and an expansion tank fitted on the rear side in a recess 290b provided on the right side of the back heat insulation member 290 202, a front heat insulating member 295 covering the front surface side of the expansion tank 202, a cold / hot water supply unit controller 220 attached to the front surface of the front heat insulating member 295, and a second cover covering a refrigerant pipe connection portion of the refrigerant circuit Member 280 and a first cover member 270 (front cover portion 271, rear cover 270a) attached to the lower side of the bottom frame 231a. Having over 272) and.
　また、図１３は上記冷温水供給ユニット２００の底フレーム２３１ａに背面断熱部材２９０と第１,第２カバー部材２７０,２８０が取り付けられた状態の斜視図を示している。図１３において、図９と同一構成部には同一参照番号を付している。 FIG. 13 is a perspective view showing a state in which the rear heat insulating member 290 and the first and second cover members 270 and 280 are attached to the bottom frame 231a of the cold / hot water supply unit 200. In FIG. 13, the same components as those in FIG. 9 are denoted by the same reference numerals.
　また、図１４は上記冷温水供給ユニット２００の底フレーム２３１ａに背面断熱部材２９０と第１,第２カバー部材２７０,２８０が取り付けられた状態の正面図を示している。図１４において、図９と同一構成部には同一参照番号を付している。 FIG. 14 is a front view showing a state in which the rear heat insulating member 290 and the first and second cover members 270 and 280 are attached to the bottom frame 231a of the cold / hot water supply unit 200. 14, the same reference numerals are assigned to the same components as those in FIG.
　また、図１５(a)は上記第２カバー部材２８０の右斜め前方かつ斜め上方から見た斜視図を示している。また、図１５(b)は上記第２カバー部材２８０の右斜め後方かつ斜め上方から見た斜視図を示している。また、図１５(c)は上記第２カバー部材２８０の左斜め後方かつ斜め上方から見た斜視図を示している。 FIG. 15A is a perspective view of the second cover member 280 as viewed obliquely from the front right and obliquely upward. FIG. 15B is a perspective view of the second cover member 280 as viewed obliquely from the right rear and obliquely upward. FIG. 15 (c) is a perspective view of the second cover member 280 as seen from the diagonally left rear and diagonally upward.
　図１５(a)～図１５(c)に示すように、第２カバー部材２８０の本体部２８０ａは、後面側が開口する縦長のドーム形状をしている。この本体部２８０ａの下端かつ開口側の縁から下方に延びる長方形状の案内部２８０ｂは、上辺を除く各辺に周壁２８１,２８２,２８３を設けている。 As shown in FIGS. 15 (a) to 15 (c), the main body 280a of the second cover member 280 has a vertically long dome shape with an open rear side. The rectangular guide part 280b extending downward from the lower end of the main body part 280a and the edge on the opening side is provided with peripheral walls 281, 282 and 283 on each side except the upper side.
　上記第６実施形態の冷温水供給ユニット２００は、第５実施形態の冷温水供給ユニット２００と同様の効果を有する。 The cold / hot water supply unit 200 of the sixth embodiment has the same effect as the cold / hot water supply unit 200 of the fifth embodiment.
　なお、上記カバー部材２８０の案内部２８０ｂを、ケーシング２３１の底フレーム２３１ａに設けられた接続口２４１に係合するように構成してもよい。これにより、漏洩した冷媒の接続口２４１への案内と共に、カバー部材２８０の位置決めが可能になる。 In addition, you may comprise so that the guide part 280b of the said cover member 280 may engage with the connection port 241 provided in the bottom frame 231a of the casing 231. FIG. Accordingly, the cover member 280 can be positioned together with the guidance of the leaked refrigerant to the connection port 241.
　〔第７実施形態〕
　図１６はこの発明の第７実施形態の温調システムの冷温水供給ユニット２００の構成を示している。この冷温水供給ユニット２００は、第１カバー部材２７５を除いて第５実施形態の冷温水供給ユニット２００と同一の構成をしており、同一構成部には同一参照番号を付している。 [Seventh Embodiment]
FIG. 16 shows the configuration of the cold / hot water supply unit 200 of the temperature control system according to the seventh embodiment of the present invention. The cold / hot water supply unit 200 has the same configuration as the cold / hot water supply unit 200 of the fifth embodiment except for the first cover member 275, and the same reference numerals are assigned to the same components.
　この第７実施形態の冷温水供給ユニット２００は、図１６に示すように、ケーシング２３１の底フレーム２３１ａに冷媒配管接続部２３４と冷媒配管接続部２３５を覆う第１カバー部材２７５を取り付けている。この第１カバー部材２７５は、冷媒配管接続部２３４に接続された冷媒配管Ｌ１および冷媒配管接続部２３５に接続された冷媒配管Ｌ２が貫通する穴２７５ａ,２７５ｂを有する。また、第１カバー部材２７５は、排出ホース２３０の上端が接続された接続穴２７５ｃを有する。 In the cold / hot water supply unit 200 of the seventh embodiment, a first cover member 275 that covers the refrigerant pipe connection portion 234 and the refrigerant pipe connection portion 235 is attached to the bottom frame 231a of the casing 231 as shown in FIG. The first cover member 275 has holes 275a and 275b through which the refrigerant pipe L1 connected to the refrigerant pipe connection part 234 and the refrigerant pipe L2 connected to the refrigerant pipe connection part 235 pass. The first cover member 275 has a connection hole 275c to which the upper end of the discharge hose 230 is connected.
　上記排出ホース２３０と第１カバー部材２７５で排出部材を構成している。 The discharge hose 230 and the first cover member 275 constitute a discharge member.
　さらに、第１カバー部材２７５は、ケーシング２３１の左側面に設けられた接続口２７６を介して排出ホース２３０が接続された接続穴２７５ｃに案内する案内通路２７５ｄを有する。 Furthermore, the first cover member 275 has a guide passage 275d that guides to a connection hole 275c to which the discharge hose 230 is connected via a connection port 276 provided on the left side surface of the casing 231.
　上記第７実施形態の冷温水供給ユニット２００は、第５実施形態の冷温水供給ユニット２００と同様の効果を有する。 The cold / hot water supply unit 200 of the seventh embodiment has the same effect as the cold / hot water supply unit 200 of the fifth embodiment.
　また、上記ケーシング２３１内に漏洩した可燃性冷媒(特に液冷媒)がケーシング２３１内の底部に溜まるので、ケーシング２３１内の冷媒配管接続部分よりも下側かつケーシング２３１の側部からの漏洩冷媒を第１カバー部材２７５により排出することで、漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシング２３１の下部から第１カバー部材２７５と排出ホース２３０を介して床下に速やかに排出することができる。 Further, since the flammable refrigerant (particularly liquid refrigerant) leaked into the casing 231 is accumulated at the bottom of the casing 231, the leakage refrigerant from the side of the casing 231 below the refrigerant pipe connection portion in the casing 231 is removed. By discharging by the first cover member 275, the liquid refrigerant occupying most of the leaked combustible refrigerant is quickly discharged from the lower part of the casing 231 under the floor through the first cover member 275 and the discharge hose 230. Can do.
　また、上記ケーシング２３１内の水熱交換器２０１の左側面に設けられた接続口２７６に、第１カバー部材２７５を接続することによって、水熱交換器２０１の冷媒配管接続部分から漏れ出た可燃性冷媒は、水熱交換器２０１の下側に流れ落ちて、下側かつ左側面の接続口２７６を介して第１カバー部材２７５,排出ホース２３０により床下に排出することができる。 Moreover, the combustible which leaked from the refrigerant | coolant piping connection part of the water heat exchanger 201 by connecting the 1st cover member 275 to the connection port 276 provided in the left side surface of the water heat exchanger 201 in the said casing 231. The characteristic refrigerant flows down to the lower side of the water heat exchanger 201 and can be discharged under the floor by the first cover member 275 and the discharge hose 230 through the connection port 276 on the lower side and the left side.
　〔第８実施形態〕
　図１７はこの発明の第８実施形態の貯湯ユニット１００１を備えた給湯装置を示す簡略構成図を示し、図１８は上記給湯装置の回路図を示している。 [Eighth Embodiment]
FIG. 17 shows a simplified configuration diagram showing a hot water supply apparatus provided with a hot water storage unit 1001 according to the eighth embodiment of the present invention, and FIG. 18 shows a circuit diagram of the hot water supply apparatus.
　この第１実施形態の給湯装置は、図１７,図１８に示すように、貯湯ユニット１００１およびヒートポンプユニット１００２を備えている。 The hot water supply apparatus according to the first embodiment includes a hot water storage unit 1001 and a heat pump unit 1002 as shown in FIGS.
　上記貯湯ユニット１００１は、ケーシング１０４０と、ケーシング１０４０内に配置された貯湯タンク１０１１と、この貯湯タンク１０１１に貯留される温水を生成するための水熱交換器１０１２とを有する。上記貯湯ユニット１００１は、室内に設置される水熱交換器収容ユニットの一例である。 The hot water storage unit 1001 includes a casing 1040, a hot water storage tank 1011 disposed in the casing 1040, and a water heat exchanger 1012 for generating hot water stored in the hot water storage tank 1011. The hot water storage unit 1001 is an example of a water heat exchanger accommodating unit installed indoors.
　上記貯湯ユニット１００１の底部には、給水源Ｅに接続された給水配管１０３２が接続されている。これにより、貯湯ユニット１００１は、給水源Ｅの市水(水道水)を、水配管用接続口１０７６に接続された給水配管１０３２から分岐した入水配管１０３２ａを介して、貯湯タンク１０１１の底部に導入できるようになっている。また、貯湯タンク１０１１の底部には、循環配管１０３３の一端が接続されている。一方、貯湯タンク１０１１の頂部には、循環配管１０３３の他端が接続されている。この循環配管１０３３には、循環ポンプ１０３４および水熱交換器１０１２が配設されている。 A water supply pipe 1032 connected to a water supply source E is connected to the bottom of the hot water storage unit 1001. As a result, the hot water storage unit 1001 introduces city water (tap water) of the water supply source E into the bottom of the hot water storage tank 1011 via the water inlet pipe 1032a branched from the water supply pipe 1032 connected to the water pipe connection port 1076. It can be done. One end of a circulation pipe 1033 is connected to the bottom of the hot water storage tank 1011. On the other hand, the other end of the circulation pipe 1033 is connected to the top of the hot water storage tank 1011. The circulation pipe 1033 is provided with a circulation pump 1034 and a water heat exchanger 1012.
　また、貯湯タンク１０１１の頂部には、給湯配管１０３５を介して、混合弁１０３６が接続されている。この混合弁１０３６には、給水配管１０３２から分岐した他方の入水配管１０３２ｂと、給湯端末Ｔとが接続されている。これにより、上記給湯装置は、貯湯タンク１０１１の頂部から出湯された温水と給水源Ｅから供給される水を混合弁１０３６で混合することによって、給湯端末Ｔにおいて、所望の温度の温水を供給できるようになっている。なお、図１８では省略しているが、貯湯タンク１０１１には、図１７に示す風呂用循環配管１０９０が接続されている。 Further, a mixing valve 1036 is connected to the top of the hot water storage tank 1011 through a hot water supply pipe 1035. The mixing valve 1036 is connected to the other water inlet pipe 1032b branched from the water supply pipe 1032 and the hot water supply terminal T. Thus, the hot water supply device can supply hot water having a desired temperature at the hot water supply terminal T by mixing the hot water discharged from the top of the hot water storage tank 1011 and the water supplied from the water supply source E with the mixing valve 1036. It is like that. Although omitted in FIG. 18, a hot water tank 1011 is connected to a bath circulation pipe 1090 shown in FIG. 17.
　上記水熱交換器１０１２は、貯湯タンク１０１１下部に配置され、凝縮器として作用する。より詳しくは、水熱交換器１０１２では、ヒートポンプユニット１００２からの高温冷媒と貯湯タンク１０１１からの水とが熱交換する。これにより、貯湯ユニット１００１は、貯湯タンク１０１１からの水を水熱交換器１０１２で温めて、貯湯タンク１０１１に戻すことができるようになっている。 The water heat exchanger 1012 is disposed below the hot water storage tank 1011 and functions as a condenser. More specifically, in the water heat exchanger 1012, the high-temperature refrigerant from the heat pump unit 1002 and the water from the hot water storage tank 1011 exchange heat. Thereby, the hot water storage unit 1001 can warm the water from the hot water storage tank 1011 with the hydrothermal exchanger 1012 and return it to the hot water storage tank 1011.
　上記ヒートポンプユニット１００２は、水熱交換器１０１２を含まないが、水熱交換器１０１２に接続された圧縮機１０２１と、膨張手段１０２２および空気熱交換器１０２３を含む。この圧縮機１０２１と、水熱交換器１０１２と、膨張手段１０２２および空気熱交換器１０２３は、冷媒配管１０３１(往配管１０３１ａ,復配管１０３１ｂ)を介して環状に接続されている。この空気熱交換器１０２３は蒸発器として作用する。なお、膨張手段１０２２は例えば膨張弁である。 The heat pump unit 1002 does not include the water heat exchanger 1012, but includes a compressor 1021 connected to the water heat exchanger 1012, expansion means 1022, and an air heat exchanger 1023. The compressor 1021, the water heat exchanger 1012, the expansion means 1022, and the air heat exchanger 1023 are connected in an annular shape via a refrigerant pipe 1031 (outward pipe 1031 a and return pipe 1031 b). This air heat exchanger 1023 acts as an evaporator. The expansion means 1022 is, for example, an expansion valve.
　また、冷媒配管１０３１の往配管１０３１ａは、冷媒配管接続部１０７４を介して冷媒配管１０３１ｃの一端に接続されている。一方、復配管１０３１ｂは、冷媒配管接続部１０７３を介して冷媒配管１０３１ｃの他端に接続されている。また、この冷媒配管１０３１ｃは、水熱交換器１０１２を介して冷媒配管接続部１０７３,１０７４を接続している。 Further, the forward pipe 1031a of the refrigerant pipe 1031 is connected to one end of the refrigerant pipe 1031c via the refrigerant pipe connection portion 1074. On the other hand, the return pipe 1031b is connected to the other end of the refrigerant pipe 1031c via the refrigerant pipe connection portion 1073. In addition, the refrigerant pipe 1031c is connected to refrigerant pipe connection portions 1073 and 1074 through a water heat exchanger 1012.
　上記圧縮機１０２１と膨張手段１０２２と空気熱交換器１０２３および水熱交換器１０１２を環状に接続することにより冷媒回路を構成している。この冷媒回路では、可燃性冷媒の一例として、微燃性冷媒であるＲ３２の単一冷媒またはＲ３２を主成分とする混合冷媒を用いている。 The refrigerant circuit is configured by connecting the compressor 1021, the expansion means 1022, the air heat exchanger 1023, and the water heat exchanger 1012 in an annular shape. In this refrigerant circuit, as an example of the flammable refrigerant, a single refrigerant of R32, which is a slightly flammable refrigerant, or a mixed refrigerant containing R32 as a main component is used.
　上記圧縮機１０２１および循環ポンプ１０３４を駆動させると、貯湯タンク１０１１内の水が、貯湯タンク１０１１の底部から循環配管１０３３を流れる。このとき、循環配管１０３３を流れる水は、水熱交換器１０１２で高温冷媒との熱交換で温水になった後、貯湯タンク１０１１の頂部から貯湯タンク１０１１内に戻る。このような動作を継続して行うことによって、貯湯タンク１０１１内に高温の温水を貯留することができる。貯湯タンク１０１１内の温水は、水配管１０３７と水配管用接続口１０７５および水配管１０８０を介して給湯端末Ｔや風呂に供給される。 When the compressor 1021 and the circulation pump 1034 are driven, the water in the hot water storage tank 1011 flows through the circulation pipe 1033 from the bottom of the hot water storage tank 1011. At this time, the water flowing through the circulation pipe 1033 becomes hot water by heat exchange with the high-temperature refrigerant in the water heat exchanger 1012, and then returns from the top of the hot water storage tank 1011 into the hot water storage tank 1011. By continuously performing such an operation, high-temperature hot water can be stored in the hot water storage tank 1011. Hot water in the hot water storage tank 1011 is supplied to the hot water supply terminal T and the bath through the water pipe 1037, the water pipe connection port 1075, and the water pipe 1080.
　図１９は上記貯湯ユニット１００１の斜視図を示し、図２０は図１９の配管などを取り除いた状態を示している。図１９,図２０において、図１７,図１８と同一の構成部には同一参照番号を付している。 FIG. 19 shows a perspective view of the hot water storage unit 1001, and FIG. 20 shows a state where the piping of FIG. 19 is removed. 19 and 20, the same components as those in FIGS. 17 and 18 are denoted by the same reference numerals.
　上記貯湯ユニット１００１は、図１９,図２０に示すように、ケーシング１０４０を有する。このケーシング１０４０内には、貯湯タンク１０１１、水熱交換器１０１２、給湯配管１０３５(図１８に示す)、入水配管１０３２ａ、入水配管１０３２ｂ(図１８に示す)、冷媒配管１０３１ｃなどが収容されている。この貯湯タンク１０１１は断熱材１０１３で覆われている。また、水熱交換器１０１２も断熱材１０１４で覆われている。 The hot water storage unit 1001 has a casing 1040 as shown in FIGS. In the casing 1040, a hot water storage tank 1011, a water heat exchanger 1012, a hot water supply pipe 1035 (shown in FIG. 18), a water inlet pipe 1032a, a water inlet pipe 1032b (shown in FIG. 18), a refrigerant pipe 1031c, and the like are accommodated. . This hot water storage tank 1011 is covered with a heat insulating material 1013. The water heat exchanger 1012 is also covered with a heat insulating material 1014.
　上記貯湯タンク１０１１は、３つの缶体脚１０５０,１０５０,１０５０に支えられ、底板１０４５上に起立している。この３つの缶体脚１０５０,１０５０,１０５０のうちの１つは前面側にあり、他の２つは後面側にある。 The hot water storage tank 1011 is supported by three can body legs 1050, 1050, and 1050 and stands on the bottom plate 1045. One of the three can legs 1050, 1050, 1050 is on the front side, and the other two are on the rear side.
　上記貯湯タンク１０１１は、缶体脚１０５０の支持により、底板１０４５から離隔されている。この貯湯タンク１０１１の底面と底板１０４５との間に水熱交換器１０１２を配置している。 The hot water storage tank 1011 is separated from the bottom plate 1045 by the support of the can body leg 1050. A water heat exchanger 1012 is disposed between the bottom surface of the hot water storage tank 1011 and the bottom plate 1045.
　上記ケーシング１０４０の前部にメンテナンス用開口部１０４７が設けられている。また、ケーシング１０４０には、メンテナンス用開口部１０４７を覆うように、蓋板１０４８が着脱可能に取り付けられている。 A maintenance opening 1047 is provided at the front of the casing 1040. Further, a cover plate 1048 is detachably attached to the casing 1040 so as to cover the maintenance opening 1047.
　図２１は上記貯湯ユニット１００１の下部の正面図を示している。図２１において、図１９,図２０と同一の構成部には同一参照番号を付している。 FIG. 21 shows a front view of the lower part of the hot water storage unit 1001. In FIG. 21, the same components as those in FIGS. 19 and 20 are denoted by the same reference numerals.
　図２１に示すように、蓋板１０４８の前方に水配管用接続口１０７１,１０７２を設けている。水配管用接続口１０７１,１０７２は、ケーシング１０４０内の水配管１０６１,１０６３(図１９に示す)を介して、貯湯タンク１０１１の頂部に接続されている。これにより、水配管用接続口１０７１,１０７２に水配管(図示せず)を接続すれば、貯湯タンク１０１１内の温水を他の給湯端末に流すことができるようになっている。なお、図１７では、水配管１０６１,１０６３および水配管用接続口１０７１,１０７２の図示を省略している。 21, water piping connection ports 1071 and 1072 are provided in front of the cover plate 1048. The water pipe connection ports 1071 and 1072 are connected to the top of the hot water storage tank 1011 via water pipes 1061 and 1063 (shown in FIG. 19) in the casing 1040. Thus, if a water pipe (not shown) is connected to the water pipe connection ports 1071 and 1072, the hot water in the hot water storage tank 1011 can be allowed to flow to other hot water supply terminals. In FIG. 17, the water pipes 1061 and 1063 and the water pipe connection ports 1071 and 1072 are not shown.
　上記水配管用接続口１０７１,１０７２の一側方に冷媒配管接続部１０７３,１０７４を設けている。この冷媒配管接続部１０７３,１０７４の高さ方向の位置は、水配管用接続口１０７１,１０７２の高さ方向の位置よりも低い。 Refrigerant pipe connection portions 1073 and 1074 are provided on one side of the water pipe connection ports 1071 and 1072, respectively. The positions in the height direction of the refrigerant pipe connection portions 1073 and 1074 are lower than the positions in the height direction of the water pipe connection ports 1071 and 1072.
　また、上記水配管用接続口１０７１,１０７２の他側方には、水配管用接続口１０７５,１０７６が設けられている。 Further, water pipe connection ports 1075 and 1076 are provided on the other side of the water pipe connection ports 1071 and 1072.
　上記構成の貯湯ユニット１００１は、図２１に示すように、床１４００上に設置されている。貯湯ユニット１００１は、冷媒配管接続部１０７３に冷媒配管１０３１の復配管１０３１ｂの一端が接続されると共に、冷媒配管接続部１０７４に冷媒配管１０３１の往配管１０３１ａの一端を接続している。この冷媒配管１０３１(往配管１０３１ａ,復配管１０３１ｂ)は、床１４００に設けられた穴１４００ａを介して床１４００の下側に配設され、室外に設置されたヒートポンプユニット１００２(図１７に示す)に接続される。 The hot water storage unit 1001 having the above configuration is installed on a floor 1400 as shown in FIG. In the hot water storage unit 1001, one end of the return pipe 1031b of the refrigerant pipe 1031 is connected to the refrigerant pipe connection part 1073, and one end of the forward pipe 1031a of the refrigerant pipe 1031 is connected to the refrigerant pipe connection part 1074. The refrigerant pipe 1031 (outward pipe 1031a, return pipe 1031b) is disposed below the floor 1400 through a hole 1400a provided in the floor 1400, and is installed outside the heat pump unit 1002 (shown in FIG. 17). Connected to.
　また、ケーシング１０４０の底板１０４５に一端が接続された排出ホース１２３０によって、ケーシング１０４０内と床下を連通している。上記排出ホース１２３０は、第１カバー部材の一例である。 Also, the inside of the casing 1040 and the under floor are communicated with each other by a discharge hose 1230 having one end connected to the bottom plate 1045 of the casing 1040. The discharge hose 1230 is an example of a first cover member.
　上記構成の貯湯ユニット１００１によれば、水熱交換器１０１２が収容されたケーシング１０４０内と床下を排出ホース１２３０(排出部材)により連通することによって、室内に設置された状態でケーシング１０４０内に可燃性冷媒が急速漏洩した場合、ケーシング１０４０内に漏洩した直後の可燃性冷媒のうちの多くは蒸発しきらずに液体のままケーシング１０４０内から排出ホース１２３０を介して流れ落ちて床下に排出されるので、可燃性冷媒の漏洩時に室内への冷媒漏れを防ぐことができる。したがって、室内に可燃性冷媒が滞留してガス濃度が高くなって発火などのリスクが高まるのを抑制できる。 According to the hot water storage unit 1001 configured as described above, the inside of the casing 1040 in which the water heat exchanger 1012 is accommodated communicates with the under floor by the discharge hose 1230 (discharge member), so that the inside of the casing 1040 is combustible in a state of being installed indoors. When the volatile refrigerant leaks rapidly, most of the flammable refrigerant immediately after leaking into the casing 1040 flows down from the casing 1040 through the discharge hose 1230 and is discharged under the floor without being evaporated. When the flammable refrigerant leaks, the refrigerant can be prevented from leaking into the room. Therefore, it is possible to suppress the risk of ignition and the like due to flammable refrigerant staying in the room and increasing the gas concentration.
　また、排出部材に排出ホース１２３０を用いることによって、ケーシング１０４０内に漏洩した可燃性冷媒を床下に導く経路を容易に設けることができ、可撓性を有するホースを用いることで設置の自由度が高まると共に作業性が向上する。 Further, by using the discharge hose 1230 as the discharge member, a path for guiding the flammable refrigerant leaked into the casing 1040 can be easily provided, and the flexibility of installation can be obtained by using the flexible hose. Workability improves with increasing.
　また、上記ケーシング１０４０内に漏洩した可燃性冷媒(特に液冷媒)がケーシング１０４０内の底部に溜まるので、ケーシング１０４０の下部と床下とを排出ホース１２３０(排出部材)により連通することによって、漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシング１０４０の下部から排出ホース１２３０を介して床下に速やかに排出することができる。 In addition, since the combustible refrigerant (particularly liquid refrigerant) leaked into the casing 1040 accumulates at the bottom of the casing 1040, the lower part of the casing 1040 and the underfloor are communicated with each other by the discharge hose 1230 (discharge member). The liquid refrigerant occupying most of the combustible refrigerant can be quickly discharged under the floor from the lower portion of the casing 1040 via the discharge hose 1230.
　また、上記ケーシング１０４０内の水熱交換器１０１２の下部に設けられた接続口１２３２に、排出ホース１２３０(排出部材)を接続することによって、水熱交換器１０１２の冷媒配管接続部分から漏れ出た可燃性冷媒は、水熱交換器１０１２の下側に流れ落ちて、下側の接続口１２３２を介して排出ホース１２３０により床下に排出することができる。 Further, by connecting a discharge hose 1230 (discharge member) to a connection port 1232 provided in the lower portion of the water heat exchanger 1012 in the casing 1040, leakage occurred from the refrigerant pipe connection portion of the water heat exchanger 1012. The combustible refrigerant flows down to the lower side of the water heat exchanger 1012 and can be discharged under the floor by the discharge hose 1230 through the lower connection port 1232.
　なお、上記第８実施形態において、底板１０４５上に底面が傾斜した液体受け部材を配置して、排出ホース１２３０が接続された接続口１２３２に漏洩した冷媒をスムーズに案内するようにしてもよい。また、底板１０４５の底面を傾斜させて、排出ホース１２３０が接続された接続口１２３２に漏洩した冷媒をスムーズに案内するようにしてもよい。 In the eighth embodiment, a liquid receiving member having an inclined bottom surface may be disposed on the bottom plate 1045 to smoothly guide the leaked refrigerant to the connection port 1232 to which the discharge hose 1230 is connected. In addition, the bottom surface of the bottom plate 1045 may be inclined to smoothly guide the refrigerant leaked to the connection port 1232 to which the discharge hose 1230 is connected.
　〔第９実施形態〕
　図２２はこの発明の第９実施形態の貯湯ユニット１００１の下部の正面図を示している。この第９実施形態の貯湯ユニット１００１は、接続口１２３２がない点と排出ホース１２３０と化粧パネル１２５０を除いて第８実施形態の貯湯ユニット１００１と同一の構成をしており、図１７～図２０を援用する。 [Ninth Embodiment]
FIG. 22 shows a front view of the lower part of the hot water storage unit 1001 according to the ninth embodiment of the present invention. The hot water storage unit 1001 of the ninth embodiment has the same configuration as the hot water storage unit 1001 of the eighth embodiment, except that there is no connection port 1232, the discharge hose 1230, and the decorative panel 1250, and FIGS. Is used.
　この第９実施形態の貯湯ユニット１００１は、図２２に示すように、ケーシング１０４０の底板１０４５と床１４００との間に、全周を囲うように化粧パネル１２５０が配置されている。 In the hot water storage unit 1001 of the ninth embodiment, a decorative panel 1250 is disposed between the bottom plate 1045 of the casing 1040 and the floor 1400 so as to surround the entire periphery, as shown in FIG.
　上記化粧パネル１２５０は、冷媒配管１０３１(１０３１ａ,１０３１ｂ)および排出ホース１２３０の一部を収容する箱状の通路を構成している。この冷媒配管１０３１(１０３１ａ,１０３１ｂ)は、床１４００に設けられた穴１４００ａを介して床１４００の下側に配設され、ヒートポンプユニット１００２(図８に示す)に接続される。 The decorative panel 1250 constitutes a box-shaped passage that accommodates a part of the refrigerant pipe 1031 (1031a, 1031b) and the discharge hose 1230. The refrigerant pipe 1031 (1031a, 1031b) is disposed below the floor 1400 through a hole 1400a provided in the floor 1400, and is connected to the heat pump unit 1002 (shown in FIG. 8).
　上記排出ホース１２３０と化粧パネル１２５０で排出部材を構成している。 The discharge hose 1230 and the decorative panel 1250 constitute a discharge member.
　また、化粧パネル１２５０内の下側に液体受け部材１２５２を配置している。この液体受け部材１２５２の最も低い位置に設けられた接続口１２５２ａに排出ホース１２３０の上端を接続することによって、化粧パネル１２５０と排出ホース１２３０を介して貯湯ユニット１００１のケーシング１０４０内部と床下とを連通している。 Further, a liquid receiving member 1252 is disposed on the lower side in the decorative panel 1250. By connecting the upper end of the discharge hose 1230 to the connection port 1252a provided at the lowest position of the liquid receiving member 1252, the interior of the casing 1040 of the hot water storage unit 1001 and the under floor are communicated via the decorative panel 1250 and the discharge hose 1230. is doing.
　上記液体受け部材１２５２の底面の傾斜角度θ３[deg]を所定角度θ３min[deg]よりも大きい値に設定している。この所定角度θ３min[deg]は、貯湯ユニット１００１から可燃性冷媒が急速漏洩したときの冷媒量やケーシング１０４０および化粧パネル１２５０の構成などに応じて適宜決定される。 The inclination angle θ3 [deg] of the bottom surface of the liquid receiving member 1252 is set to a value larger than the predetermined angle θ3 min [deg]. The predetermined angle θ3min [deg] is appropriately determined according to the refrigerant amount when the flammable refrigerant rapidly leaks from the hot water storage unit 1001, the configurations of the casing 1040 and the decorative panel 1250, and the like.
　上記第９実施形態では、化粧パネル１２５０内の下側に液体受け部材１２５２を配置したが、液体受け部材または排出ホースの少なくとも一方を備えない構成でもよい。この場合でも、箱状の通路を構成する置台によりケーシング内から漏洩した可燃性冷媒を床下に案内することができる。 In the ninth embodiment, the liquid receiving member 1252 is disposed on the lower side in the decorative panel 1250. However, at least one of the liquid receiving member and the discharge hose may be omitted. Even in this case, the flammable refrigerant leaked from the casing can be guided under the floor by the pedestal constituting the box-shaped passage.
　上記第９実施形態の貯湯ユニット１００１は、第８実施形態の貯湯ユニット１００１と同一の効果を有する。 The hot water storage unit 1001 of the ninth embodiment has the same effect as the hot water storage unit 1001 of the eighth embodiment.
　また、壁面に設置するタイプの貯湯ユニット１００１において、ケーシング１０４０下部に箱状の通路として化粧パネル１２５０を用いることによって、壁面に設置したケーシング１０４０の下側空間(配管などが敷設される空間)を化粧パネル１２５０で覆って、美観を損ねることなく、ケーシング１０４０内に漏洩した可燃性冷媒を床下に導く通路を形成できる。 Further, in the hot water storage unit 1001 of the type installed on the wall surface, by using the decorative panel 1250 as a box-shaped passage at the lower part of the casing 1040, the lower space of the casing 1040 installed on the wall surface (the space where piping or the like is laid) By covering with the decorative panel 1250, a passage for guiding the flammable refrigerant leaked into the casing 1040 to the lower floor can be formed without impairing the beauty.
　また、上記化粧パネル１２５０内に配置された液体受け部材１２５２により、漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を、排出ホース１２３０(排出部材)が接続された接続口１２５２ａに確実に案内することができる。 Further, the liquid receiving member 1252 disposed in the decorative panel 1250 allows the leaked combustible refrigerant (or liquid such as condensed water when cold water is supplied) to be connected to the connection port 1252a to which the discharge hose 1230 (discharge member) is connected. Can be surely guided.
　また、上記液体受け部材１２５２の傾斜した底面によって、ケーシング１０４０下部から漏洩した可燃性冷媒(または冷水供給時の結露水などの液体)を、排出ホース１２３０が接続された接続口１２５２ａにスムーズに案内することができる。 In addition, the inclined bottom surface of the liquid receiving member 1252 smoothly guides the flammable refrigerant leaked from the lower portion of the casing 1040 (or liquid such as condensed water when supplying cold water) to the connection port 1252a to which the discharge hose 1230 is connected. can do.
　また、上記ケーシング１０４０外において、冷媒配管１０３１(１０３１ａ,１０３１ｂ)が接続された冷媒配管接続部１０７４,１０７３から可燃性冷媒が漏れ出ても、化粧パネル１２５０内で受けて排出ホース１２３０により床下に排出することができ、より安全性が高まる。 Further, even if the flammable refrigerant leaks from the refrigerant pipe connection portions 1074 and 1073 to which the refrigerant pipe 1031 (1031a and 1031b) is connected outside the casing 1040, it is received in the decorative panel 1250 and is discharged under the floor by the discharge hose 1230. It can be discharged and safety is increased.
　〔第１０実施形態〕
　図２３はこの発明の第１０実施形態の貯湯ユニット１００１の下部の正面図を示している。この第１０実施形態の貯湯ユニット１００１は、排出ホース１２３０と第１カバー部材１２７０を除いて第８実施形態の貯湯ユニット１００１と同一の構成をしており、図１７～図２０を援用する。 [Tenth embodiment]
FIG. 23 is a front view of the lower part of the hot water storage unit 1001 according to the tenth embodiment of the present invention. The hot water storage unit 1001 of the tenth embodiment has the same configuration as the hot water storage unit 1001 of the eighth embodiment except for the discharge hose 1230 and the first cover member 1270, and FIGS.
　この第１０実施形態の貯湯ユニット１００１は、図２３に示すように、蓋板１０４８に冷媒配管１０３１(往配管１０３１ａ,復配管１０３１ｂ)を覆う第１カバー部材１２７０を取り付けている。この第１カバー部材１２７０は、冷媒配管接続部１０７４に接続された冷媒配管１０３１の往配管１０３１ａおよび冷媒配管接続部１０７３に接続された冷媒配管１０３１の復配管１０３１ｂが貫通する穴(図示せず)を有する。また、第１カバー部材１２７０は、排出ホース１２３０の上端が接続された接続穴(図示せず)を有する。また、ケーシング１０４０内の水熱交換器１０１２の下部に設けられた接続口１２３２を介して、ケーシング１０４０内と第１カバー部材１２７０内とが連通している。 In the hot water storage unit 1001 of the tenth embodiment, as shown in FIG. 23, a first cover member 1270 that covers the refrigerant pipe 1031 (outward pipe 1031a, return pipe 1031b) is attached to the cover plate 1048. The first cover member 1270 has a hole (not shown) through which the outgoing pipe 1031a of the refrigerant pipe 1031 connected to the refrigerant pipe connecting part 1074 and the return pipe 1031b of the refrigerant pipe 1031 connected to the refrigerant pipe connecting part 1073 pass. Have The first cover member 1270 has a connection hole (not shown) to which the upper end of the discharge hose 1230 is connected. Further, the inside of the casing 1040 and the inside of the first cover member 1270 communicate with each other via a connection port 1232 provided in the lower part of the water heat exchanger 1012 in the casing 1040.
　上記排出ホース１２３０と第１カバー部材１２７０で排出部材を構成している。 The discharge hose 1230 and the first cover member 1270 constitute a discharge member.
　上記構成の貯湯ユニット１００１によれば、ケーシング１０４０内の冷媒配管接続部分よりも下側に設けられた接続口１２３２に排出部材(第１カバー部材１２７０と排出ホース１２３０)が接続され、ケーシング１０４０内に漏洩した可燃性冷媒を接続口１２３２から第１カバー部材１２７０と排出ホース１２３０によりケーシング１０４０外に排出することによって、室内に設置された状態でケーシング１０４０内に可燃性冷媒が急速漏洩した場合、ケーシング１０４０内に漏洩した直後の可燃性冷媒のうちの多くは蒸発しきらずに液体のままであるので、液体の可燃性冷媒がケーシング１０４０内から第１カバー部材１２７０と排出ホース１２３０を介して流れ落ちて床下に速やかに排出することが可能になる。したがって、可燃性冷媒の漏洩時に室内への冷媒漏れを防ぐことができ、室内に可燃性冷媒が滞留してガス濃度が高くなって発火などのリスクが高まるのを抑制できる。 According to the hot water storage unit 1001 having the above configuration, the discharge member (the first cover member 1270 and the discharge hose 1230) is connected to the connection port 1232 provided below the refrigerant pipe connection portion in the casing 1040, so that the inside of the casing 1040 When the flammable refrigerant leaked into the casing 1040 is discharged from the connection port 1232 to the outside of the casing 1040 through the first cover member 1270 and the discharge hose 1230, the flammable refrigerant rapidly leaks into the casing 1040 while being installed indoors. Since most of the combustible refrigerant immediately after leaking into the casing 1040 does not evaporate and remains liquid, the liquid combustible refrigerant flows from the casing 1040 through the first cover member 1270 and the discharge hose 1230. It is possible to discharge quickly under the floor. Therefore, it is possible to prevent the refrigerant from leaking into the room when the combustible refrigerant leaks, and to suppress the risk of ignition and the like due to the flammable refrigerant staying in the room and increasing the gas concentration.
　なお、気化した上記可燃性冷媒が空気よりも重い場合、気体の可燃性冷媒も下方に流れてケーシング１０４０内から第１カバー部材１２７０と排出ホース１２３０を介して下方に排出される。 If the vaporized combustible refrigerant is heavier than air, the gaseous combustible refrigerant also flows downward and is discharged downward from the casing 1040 through the first cover member 1270 and the discharge hose 1230.
　また、上記ケーシング１０４０内に漏洩した可燃性冷媒(特に液冷媒)がケーシング１０４０内の底部に溜まるので、ケーシング１０４０の下部からの漏洩冷媒を第１カバー部材１２７０により排出することで、ケーシング１０４０内に漏洩した可燃性冷媒のうちの多くを占める液冷媒を、ケーシング１０４０の下部から第１カバー部材１２７０と排出ホース１２３０を介して床下に速やかに排出することができる。 Further, since the flammable refrigerant (particularly liquid refrigerant) leaked into the casing 1040 accumulates at the bottom of the casing 1040, the leaked refrigerant from the lower portion of the casing 1040 is discharged by the first cover member 1270, so that the inside of the casing 1040 The liquid refrigerant occupying most of the combustible refrigerant leaked to the bottom can be quickly discharged from the lower part of the casing 1040 to the floor under the first cover member 1270 and the discharge hose 1230.
　また、上記第１カバー部材１２７０がケーシング１０４０外の冷媒配管接続部１２３４,１２３５を覆っていることによって、そのケーシング１０４０外の冷媒配管接続部１２３４,１２３５から可燃性冷媒が漏れ出ても第１カバー部材１２７０内で受けて排出することができ、より安全性が高まる。 In addition, since the first cover member 1270 covers the refrigerant pipe connection portions 1234 and 1235 outside the casing 1040, the first cover member 1270 can be used even if flammable refrigerant leaks from the refrigerant pipe connection portions 1234 and 1235 outside the casing 1040. It can be received and discharged in the cover member 1270, and safety is further increased.
　また、上記水熱交換器１０１２が収容されたケーシング１０４０内と床下を第１カバー部材１２７０,排出ホース１２３０(排出部材)により連通することによって、室内に設置された状態でケーシング１０４０内に可燃性冷媒が急速漏洩した場合、ケーシング１０４０内に漏洩した直後の可燃性冷媒のうちの多くは蒸発しきらずに液体のままケーシング１０４０内から排出ホース１２３０を介して流れ落ちて床下に速やかに排出される。 In addition, the inside of the casing 1040 in which the water heat exchanger 1012 is accommodated communicates with the under floor by the first cover member 1270 and the discharge hose 1230 (discharge member), so that the casing 1040 is combustible in the state of being installed indoors. When the refrigerant leaks rapidly, most of the combustible refrigerant immediately after leaking into the casing 1040 does not evaporate and flows down from the casing 1040 via the discharge hose 1230 as it is in a liquid state, and is quickly discharged under the floor.
　また、排出部材に排出ホース１２３０を用いることによって、ケーシング１０４０内に漏洩した可燃性冷媒を床下に導く経路を容易に設けることができ、可撓性を有するホースを用いることで設置の自由度が高まると共に作業性が向上する。 Further, by using the discharge hose 1230 as the discharge member, a path for guiding the flammable refrigerant leaked into the casing 1040 can be easily provided, and the flexibility of installation can be obtained by using the flexible hose. Workability improves with increasing.
　なお、ケーシング１０４０内に配置された第２カバー部材によって、少なくとも冷媒回路の冷媒配管接続部分を覆うと共に漏洩した可燃性冷媒をケーシング１０４０外に案内するようにしてもよい。 Note that at least the refrigerant pipe connection portion of the refrigerant circuit may be covered and the leaked combustible refrigerant may be guided outside the casing 1040 by the second cover member disposed in the casing 1040.
　〔第１１実施形態〕
　図２４はこの発明の第１１実施形態の貯湯ユニット１００１の下部の正面図を示している。この第１０実施形態の貯湯ユニット１００１は、第１カバー部材１２７５を除いて第１０実施形態の貯湯ユニット１００１と同一の構成をしており、図１７～図２０を援用する。 [Eleventh embodiment]
FIG. 24 is a front view of the lower part of the hot water storage unit 1001 according to the eleventh embodiment of the present invention. The hot water storage unit 1001 of the tenth embodiment has the same configuration as the hot water storage unit 1001 of the tenth embodiment except for the first cover member 1275, and FIGS.
　この第１１実施形態の貯湯ユニット１００１は、図２４に示すように、蓋板１０４８に冷媒配管１０３１(往配管１０３１ａ,復配管１０３１ｂ)を覆う第１カバー部材１２７５を取り付けている。この第１カバー部材１２７５の本体部１２７５ａは、冷媒配管接続部１０７４に接続された冷媒配管１０３１の往配管１０３１ａおよび冷媒配管接続部１０７３に接続された冷媒配管１０３１の復配管１０３１ｂが貫通する穴(図示せず)を有する。また、第１カバー部材１２７５の本体部１２７５ａは、排出ホース１２３０の上端が接続された接続穴(図示せず)を有する。 In the hot water storage unit 1001 of the eleventh embodiment, as shown in FIG. 24, a first cover member 1275 that covers the refrigerant pipe 1031 (outward pipe 1031a, return pipe 1031b) is attached to the cover plate 1048. The main body portion 1275a of the first cover member 1275 has a hole (through the through pipe 1031a of the refrigerant pipe 1031 connected to the refrigerant pipe connection portion 1074 and the return pipe 1031b of the refrigerant pipe 1031 connected to the refrigerant pipe connection portion 1073 ( (Not shown). The main body 1275a of the first cover member 1275 has a connection hole (not shown) to which the upper end of the discharge hose 1230 is connected.
　さらに、第１カバー部材１２７５は、本体部１２７５ａの右側からケーシング１０４０の右側面に沿って上方に延びる案内通路１２７５ｂを有する。 Furthermore, the first cover member 1275 has a guide passage 1275b extending upward from the right side of the main body 1275a along the right side surface of the casing 1040.
　上記排出ホース１２３０と第１カバー部材１２７５で排出部材を構成している。 The discharge hose 1230 and the first cover member 1275 constitute a discharge member.
　上記構成の貯湯ユニット１００１において、貯湯タンク１０１１(図２０に示す)の底面と底板１０４５(図２０に示す)との間の空間に漏れ出た冷媒は、ケーシング１０４０の右側面に設けた接続口１２３３を介して第１カバー部材１２７５の案内通路１２７５ｂを介して本体部１２７５ａに導かれ、排出ホース１２３０を介して床１４００の下側に排出する。 In the hot water storage unit 1001 having the above-described configuration, the refrigerant leaking into the space between the bottom surface of the hot water storage tank 1011 (shown in FIG. 20) and the bottom plate 1045 (shown in FIG. 20) is connected to the right side of the casing 1040. The first cover member 1275 is guided to the main body 1275 a through the guide passage 1275 b through the first cover member 1275, and discharged to the lower side of the floor 1400 through the discharge hose 1230.
　このように第１カバー部材１２７５は、第７実施形態の図１６に示す冷温水供給ユニット２００における第１カバー部材２７５と同様の効果を有する。 Thus, the first cover member 1275 has the same effect as the first cover member 275 in the cold / hot water supply unit 200 shown in FIG. 16 of the seventh embodiment.
　上記可燃性冷媒として、微燃性のＲ３２からなる単一冷媒またはＲ３２を主成分とする混合冷媒を用いることによって、Ｒ３２はオゾン破壊係数や地球温暖化係数ＧＷＰが低いので、地球温暖化への影響を抑えることができると共に、成績係数ＣＯＰ(Coefficient Of Performance)が向上してエネルギー消費を低減することができる。 By using a single refrigerant composed of slightly flammable R32 or a mixed refrigerant mainly composed of R32 as the flammable refrigerant, R32 has a low ozone destruction coefficient and a global warming coefficient GWP. The influence can be suppressed, and the coefficient of performance COP (Coefficient Of Performance) can be improved to reduce the energy consumption.
　上記第１～第１１実施形態では、可燃性冷媒として、微燃性のＲ３２の単一冷媒またはＲ３２を主成分とする混合冷媒を用いたが、これに限らず、他の可燃性冷媒を用いた水熱交換器収容ユニットにこの発明を適用してもよい。 In the first to eleventh embodiments, as the flammable refrigerant, a slightly flammable single refrigerant of R32 or a mixed refrigerant containing R32 as a main component is used, but not limited to this, other flammable refrigerants are used. The present invention may be applied to the existing water heat exchanger accommodating unit.
　また、上記第１～第１１実施形態では、水熱交換器収容ユニットとして冷温水供給ユニット２００および貯湯ユニット１００１について説明したが、水熱交換器収容ユニットはこれに限らず、可燃性冷媒が流れる水熱交換器と、その水熱交換器が収容されたケーシングを備えた装置にこの発明を適用することができる。 In the first to eleventh embodiments, the cold / hot water supply unit 200 and the hot water storage unit 1001 have been described as the water heat exchanger accommodating unit. However, the water heat exchanger accommodating unit is not limited to this, and a flammable refrigerant flows. The present invention can be applied to a device including a water heat exchanger and a casing in which the water heat exchanger is accommodated.
　この発明の具体的な実施の形態について説明したが、この発明は上記第１～第１１実施形態に限定されるものではなく、この発明の範囲内で種々変更して実施することができる。例えば、上記第１～第１１実施形態で記載した内容を適宜組み合わせたものを、この発明の一実施形態としてもよい。 Although specific embodiments of the present invention have been described, the present invention is not limited to the first to eleventh embodiments, and various modifications can be made within the scope of the present invention. For example, a combination of the contents described in the first to eleventh embodiments may be used as an embodiment of the present invention.
　１００…室外機
　１０１…圧縮機
　１０２…四路切換弁
　１０３…室外熱交換器
　１０４…電動膨張弁
　１０５…アキュムレータ
　１２０…室外機用制御装置
　２００…冷温水供給ユニット
　２０１,１０１２…水熱交換器
　２０２…膨張タンク
　２０３,１０３４…循環ポンプ
　２０４…往きヘッダ
　２０５…戻りヘッダ
　２１５…圧力センサ
　２１６…受液器
　２２０…冷温水供給ユニット用制御装置
　２２１…基板カバー部材
　２３０,１２３０…排出ホース
　２３１,１０４０…ケーシング
　２３２,２６０ａ,２４１,２７６,１２３２,１２３３…接続口
　２３４,２３５,１０７３,１０７４…冷媒配管接続部
　２５０…置台
　２５１,２５２,２６０…液体受け部材
　２７０,２７５,１２７０,１２７５…第１カバー部材
　２８０…第２カバー部材
　２９０…背面断熱部材
　２９５…前面断熱部材
　３０１～３０４…第１～第４水循環パイプ
　４００…床
　４００ａ…穴
　１００１…貯湯ユニット
　１００２…ヒートポンプユニット
　１０１１…貯湯タンク
　１０３６…混合弁
　１０２１…圧縮機
　１０２２…膨張手段
　１０２３…空気熱交換器
　１０３１…冷媒配管
　１０３１ａ…往配管
　１０３１ｂ…復配管
　Ｅ…給水源
　Ｌ１,Ｌ２…冷媒配管
　Ｐ１～Ｐ４…第１～第４床冷暖房パネル
　Ｔ…給湯端末
　Ｖ１～Ｖ４…第１～第４熱動弁 DESCRIPTION OF SYMBOLS 100 ... Outdoor unit 101 ... Compressor 102 ... Four-way switching valve 103 ... Outdoor heat exchanger 104 ... Electric expansion valve 105 ... Accumulator 120 ... Control device for outdoor unit 200 ... Cold / hot water supply unit 201, 1012 ... Water heat exchanger 202 ... expansion tanks 203 and 1034 ... circulation pump 204 ... forward header 205 ... return header 215 ... pressure sensor 216 ... liquid receiver 220 ... controller for cold / hot water supply unit 221 ... substrate cover member 230, 1230 ... discharge hose 231, 1040 ... Casing 232,260a, 241,276,1232,1233 ... Connection port 234,235,1073,1074 ... Refrigerant pipe connection part 250 ... Place 251,252,260 ... Liquid receiving member 270,275,1270,1275 ... First cover Member 280 ... second cover member 290 ... back heat insulating member 295 ... front Surface heat insulating members 301 to 304 ... first to fourth water circulation pipes 400 ... floor 400a ... holes 1001 ... hot water storage unit 1002 ... heat pump unit 1011 ... hot water storage tank 1036 ... mixing valve 1021 ... compressor 1022 ... expansion means 1023 ... air heat exchanger 1031 ... Refrigerant piping 1031a ... Outward piping 1031b ... Return piping E ... Water supply source L1, L2 ... Refrigerant piping P1-P4 ... 1st-4th floor cooling / heating panel T ... Hot water supply terminal V1-V4 ... 1st-4th thermal valve

Claims (8)

  1. 　可燃性冷媒が流れる水熱交換器(２０１,１０１２)と、
    　上記水熱交換器(２０１,１０１２)が収容されたケーシング(２３１,１０４０)と、
    　上記ケーシング(２３１,１０４０)内の冷媒配管接続部分よりも下側に設けられた接続口(２４１,２７６,１２３２,１２３３)に接続された排出部材(２３０,２７０,２７５,１２３０,１２７０,１２７５)と
    を備え、
    　上記排出部材(２３０,２７０,２７５,１２３０,１２７０,１２７５)は、上記ケーシング(２３１,１０４０)内に漏洩した可燃性冷媒を上記接続口(２４１,２７６,１２３２,１２３３)から上記ケーシング(２３１,１０４０)外に排出することを特徴とする水熱交換器収容ユニット。     A water heat exchanger (201, 1012) through which a flammable refrigerant flows;
    A casing (231, 1040) containing the water heat exchanger (201, 1012);
    Discharge members (230, 270, 275, 1230, 1270, 1275) connected to connection ports (241, 276, 1232, 1233) provided below the refrigerant pipe connection portion in the casing (231, 1040). )
    The discharge member (230, 270, 275, 1230, 1270, 1275) is configured such that the flammable refrigerant leaked into the casing (231, 1040) is discharged from the connection port (241, 276, 1232, 1233) to the casing (231). , 1040) A water heat exchanger accommodating unit characterized by being discharged outside.
  2. 　請求項１に記載の水熱交換器収容ユニットにおいて、
    　上記排出部材(２３０,２７０,１２３０,１２７０)は、上記ケーシング(２３１,１０４０)内に漏洩した可燃性冷媒を上記ケーシング(２３１,１０４０)の下部から排出することを特徴とする水熱交換器収容ユニット。     In the water heat exchanger accommodation unit according to claim 1,
    The discharge member (230, 270, 1230, 1270) discharges the combustible refrigerant leaked into the casing (231, 1040) from the lower part of the casing (231, 1040). Containment unit.
  3. 　請求項１に記載の水熱交換器収容ユニットにおいて、
    　上記排出部材(２３０,２７５,１２３０,１２７５)は、上記ケーシング(２３１,１０４０)内に漏洩した可燃性冷媒を上記ケーシング(２３１,１０４０)の側部から排出することを特徴とする水熱交換器収容ユニット。     In the water heat exchanger accommodation unit according to claim 1,
    The discharge member (230, 275, 1230, 1275) discharges the flammable refrigerant leaked into the casing (231, 1040) from a side portion of the casing (231, 1040). Container housing unit.
  4. 　請求項１から３までのいずれか１つに記載の水熱交換器収容ユニットにおいて、
    　上記排出部材(２３０,２７０,１２３０,１２７０)は、上記ケーシング(２３１,１０４０)の下部に設けられていることを特徴とする水熱交換器収容ユニット。     In the water heat exchanger accommodation unit according to any one of claims 1 to 3,
    The discharge unit (230, 270, 1230, 1270) is provided in a lower part of the casing (231, 1040).
  5. 　請求項４に記載の水熱交換器収容ユニットにおいて、
    　上記排出部材(２７０,２７５,１２７０,１２７５)は、上記ケーシング(２３１,１０４０)外の冷媒配管接続部(２３４,２３５,１０７３,１０７４)を覆うことを特徴とする水熱交換器収容ユニット。     In the water heat exchanger accommodation unit according to claim 4,
    The discharge member (270, 275, 1270, 1275) covers the refrigerant pipe connection part (234, 235, 1073, 1074) outside the casing (231, 1040), the water heat exchanger accommodating unit.
  6. 　請求項１から５までのいずれか１つに記載の水熱交換器収容ユニットにおいて、
    　上記排出部材(２７０,２７５)が接続された接続口(２４１,２７６)に液体を案内するように、上記ケーシング(２３１,１０４０)内の底部が傾斜していることを特徴とする水熱交換器収容ユニット。     In the water heat exchanger accommodation unit according to any one of claims 1 to 5,
    Water heat exchange characterized in that the bottom of the casing (231, 1040) is inclined so as to guide the liquid to the connection ports (241, 276) to which the discharge members (270, 275) are connected. Container housing unit.
  7. 　請求項１から６までのいずれか１つに記載の水熱交換器収容ユニットにおいて、
    　上記ケーシング(２３１)内に配置され、上記排出部材(２７０,２７５)が接続された上記接続口(２４１)に液体を案内する液体受け部材(２５１)を備えたことを特徴とする水熱交換器収容ユニット。     In the water heat exchanger accommodation unit according to any one of claims 1 to 6,
    A water heat exchange comprising a liquid receiving member (251) for guiding a liquid to the connection port (241) disposed in the casing (231) and connected to the discharge member (270, 275). Container housing unit.
  8. 　請求項１から７までのいずれか１つに記載の水熱交換器収容ユニットにおいて、
    　上記ケーシング(２３１)内かつ上記排出部材(２７０,２７５)よりも上側に配置された制御基板(２２０)を備えたことを特徴とする水熱交換器収容ユニット。     In the water heat exchanger accommodation unit according to any one of claims 1 to 7,
    A water heat exchanger accommodating unit comprising a control board (220) disposed in the casing (231) and above the discharge members (270, 275).
PCT/JP2016/077171 2015-09-30 2016-09-14 Water heat exchanger accommodation unit WO2017057003A1 (en)

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