WO2010106771A1 - Climatiseur - Google Patents

Climatiseur Download PDF

Info

Publication number
WO2010106771A1
WO2010106771A1 PCT/JP2010/001812 JP2010001812W WO2010106771A1 WO 2010106771 A1 WO2010106771 A1 WO 2010106771A1 JP 2010001812 W JP2010001812 W JP 2010001812W WO 2010106771 A1 WO2010106771 A1 WO 2010106771A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
valve
radiant heat
refrigerant
air conditioner
Prior art date
Application number
PCT/JP2010/001812
Other languages
English (en)
Japanese (ja)
Inventor
木澤敏浩
中西淳一
鈴木健二郎
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 AU2010225998A priority Critical patent/AU2010225998B2/en
Priority to US13/256,034 priority patent/US20120000224A1/en
Priority to CN2010800118323A priority patent/CN102348936A/zh
Priority to EP10753268A priority patent/EP2410250A1/fr
Publication of WO2010106771A1 publication Critical patent/WO2010106771A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089—Systems using radiation from walls or panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02334—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/031—Sensor arrangements
    • F25B2313/0314—Temperature sensors near the indoor heat exchanger
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/08—Exceeding a certain temperature value in a refrigeration component or cycle
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2515—Flow valves

Definitions

  • the present invention relates to an air conditioner including a refrigerant circuit that performs a vapor compression refrigeration cycle.
  • Patent Document 1 Japanese Patent Laid-Open No. 7-55234
  • a valve for adjusting the inflow of high-pressure refrigerant to the radiant heat exchanger during heating operation is disposed on the downstream side of the radiant heat exchanger. When the exchanger temperature reaches an upper limit, the valve closes the flow path to prevent high pressure refrigerant from flowing into the radiant heat exchanger.
  • the high pressure refrigerant is pushed into the radiant heat exchanger by the pressure of the compressor, and the refrigerant, compressor oil, and the like stay in the radiant heat exchanger. For this reason, it is difficult for the refrigerant temperature to decrease, and a state occurs in which the refrigerant temperature does not decrease when the temperature of the radiant heat exchanger is desired to decrease. Further, since the return of oil to the compressor is reduced, there is a high possibility that the reliability of the compressor is impaired. Therefore, the applicant provided an on-off valve for blocking the flow path of the high-pressure refrigerant toward the radiant heat exchanger on the upstream side of the radiant heat exchanger to prevent the high-pressure refrigerant from being pushed into the radiant heat exchanger.
  • An object of the present invention is to provide an air conditioner in which chattering does not occur in an on-off valve even when refrigerant liquefied by a radiant heat exchanger accumulates in the vicinity of the radiant heat exchanger and the on-off valve during heating operation.
  • An air conditioner is an air conditioner that includes a refrigerant circuit that performs a vapor compression refrigeration cycle and performs a heating operation using at least a high-pressure refrigerant, and the refrigerant circuit includes a convection heat exchanger and a radiant heat exchange. And a check valve.
  • the convection heat exchanger exchanges heat between the high-pressure refrigerant flowing inside and the air convection outside.
  • a radiant heat exchanger heats a predetermined member to the high-pressure refrigerant circulating inside, and generates radiant heat from the predetermined member.
  • the on-off valve is provided on the upstream side of the radiant heat exchanger during heating operation, and blocks the high-pressure refrigerant flow path toward the radiant heat exchanger.
  • the check valve is provided between the radiant heat exchanger and the on-off valve.
  • this air conditioner there is a check valve between the radiant heat exchanger and the on-off valve, and when the on-off valve is closed, there is little liquid refrigerant present between the on-off valve and the check valve. Even when the refrigerant spontaneously evaporates and the internal pressure rises, the pressure does not reach a level that pushes the open / close valve open, so chattering is prevented.
  • An air conditioner according to a second aspect of the present invention is the air conditioner according to the first aspect of the present invention, wherein the on-off valve is an opening adjustment valve having a function of blocking the flow passage and a function of adjusting the opening of the flow passage.
  • the capacity of the radiant heat exchanger is increased or decreased by adjusting the opening of the refrigerant flow path, and when the capacity of the radiant heat exchanger reaches the set value, the flow path of the refrigerant is blocked. High nature.
  • An air conditioner according to a third aspect is the air conditioner according to the first aspect or the second aspect, wherein the on-off valve blocks the flow passage when the temperature of the predetermined member reaches the upper limit of the allowable temperature.
  • the high-pressure refrigerant does not flow to the radiant heat exchanger.
  • the temperature drop of the refrigerant in the inside is accelerated.
  • the air conditioner can return to the heating operation using the radiant heat exchanger again.
  • the air conditioner according to the first aspect of the invention there is little liquid refrigerant present between the radiant heat exchanger and the check valve, and even if the liquid refrigerant spontaneously evaporates and the internal pressure rises, the open / close valve is opened. Therefore, chattering is prevented from occurring.
  • the capacity of the radiant heat exchanger is increased or decreased by adjusting the opening degree of the refrigerant flow path, and when the capacity of the radiant heat exchanger reaches a set value, the refrigerant flow path is blocked. Convenience and safety are high.
  • the air conditioner according to the third invention when the temperature of the predetermined member of the radiant heat exchanger reaches the upper limit of the allowable temperature during the heating operation using the radiant heat exchanger, the high-pressure refrigerant does not flow to the radiant heat exchanger.
  • the temperature drop of the refrigerant in the radiant heat exchanger is accelerated.
  • the air conditioner can return to the heating operation using the radiant heat exchanger again.
  • the refrigerant circuit diagram of the air conditioner which concerns on one Embodiment of this invention.
  • the disassembled perspective view which shows the internal structure of an indoor unit.
  • the side view of a heat exchanger assembly Sectional drawing which shows the attachment structure of the panel of a radiant heat exchanger, and a heat exchanger tube.
  • the graph which shows the relationship between the detection temperature of the 2nd temperature sensor in heating operation, and operation
  • Sectional drawing of a radiant heat exchanger which shows the 2nd attachment structure of a panel and a heat exchanger tube.
  • Sectional drawing of a radiant heat exchanger which shows the 3rd attachment structure of a panel and a heat exchanger tube.
  • Sectional drawing of a radiant heat exchanger which shows the 4th attachment structure of a panel and a heat exchanger tube.
  • Sectional drawing of a radiant heat exchanger which shows the 5th attachment structure of a panel and a heat exchanger tube Sectional drawing of a radiant heat exchanger which shows the 6th attachment structure of a panel and a heat exchanger tube.
  • FIG. 1 is a refrigerant circuit diagram of an air conditioner according to an embodiment of the present invention.
  • an air conditioner 1 includes a refrigerant circuit 10 that performs a vapor compression refrigeration cycle in which an indoor unit 2 that is mainly disposed indoors and an outdoor unit 3 that is primarily disposed outdoor are connected by a refrigerant communication pipe. Is formed.
  • a compressor 11, a four-way switching valve 12, a convection heat exchanger 13, an expansion valve 15, and an outdoor heat exchanger 16 are connected in order. Further, a branch pipe 40 is provided in parallel with the convection heat exchanger 13. The branch pipe 40 is connected in series with an on-off valve 41, a first check valve 42, a radiant heat exchanger 14, and a second check valve 43 in order from the side closer to the compressor 11. An accumulator 20 is connected between the four-way switching valve 12 and the suction port of the compressor 11.
  • the four-way switching valve 12 allows the refrigerant that has come out of the compressor 11 to flow to either the convection heat exchanger 13 side or the outdoor heat exchanger 16 side.
  • the control unit causes the four-way switching valve 12 to select the flow path indicated by the solid line in FIG. 1 and causes the refrigerant to flow to the convective heat exchanger 13 side.
  • the control unit causes the four-way switching valve 12 to select the flow path indicated by the dotted line in FIG. 1 and causes the refrigerant to flow to the outdoor heat exchanger 16 side.
  • the convection heat exchanger 13 is a heat exchanger including a plurality of fins and a plurality of heat transfer tubes orthogonal to the fins, and heat is generated between the refrigerant circulating in the heat transfer tubes and the air convection on the fin surface. Let the exchange take place. In the vicinity of the convective heat exchanger 13, a fan 23 for blowing air to the fin surface is disposed.
  • the radiant heat exchanger 14 is a heat exchanger composed of an aluminum plate (hereinafter referred to as a panel) and a heat transfer tube fixed to the panel, and the panel is heated by a high-pressure refrigerant circulating in the heat transfer tube. Generate radiant heat from
  • the expansion valve 15 is an electric expansion valve as a decompression mechanism, and is connected between the convection heat exchanger 13 and the outdoor heat exchanger 16 and depressurizes the refrigerant by narrowing the refrigerant flow path.
  • the outdoor heat exchanger 16 is a heat exchanger including a plurality of fins and a plurality of heat transfer tubes orthogonal to the fins, and heat is generated between the refrigerant circulating in the heat transfer tubes and the air convection on the fin surface. Let the exchange take place. In the vicinity of the outdoor heat exchanger 16, an outdoor fan 33 for blowing air to the fin surface is disposed.
  • the accumulator 20 accumulates excess liquid refrigerant and returns only the gas refrigerant to the compressor 11.
  • a discharge temperature sensor 111 is attached to a discharge pipe connecting the discharge port of the compressor 11 and the four-way switching valve 12.
  • the discharge temperature sensor 111 detects the temperature of the high-pressure refrigerant discharged from the compressor 11.
  • the control unit controls the temperature of the panel of the radiant heat exchanger 14 based on the temperature detected by the discharge temperature sensor 111.
  • Another temperature sensor hereinafter referred to as second temperature sensor 114.
  • second temperature sensor 114 is attached. In the present embodiment, both the discharge temperature sensor 111 and the second temperature sensor 114 are employed.
  • FIG. 2 is an exploded perspective view showing the internal structure of the indoor unit.
  • the indoor unit 2 has an outer shell formed by a frame 210 and a grill 240.
  • a left plate 212 is fixed to the left end of the rectangular opening 211
  • a right plate 213 is fixed to the right end
  • an upper plate 214 is fixed to the upper end.
  • the frame 210 has a fan chamber 210a and an electrical component chamber 210b.
  • the grill 240 has an upper outlet 240a, a lower outlet 240b, an opening 240c, a left inlet 240d, and a right inlet 240e.
  • the upper air outlet 240 a is located at the upper part of the grill 240, and the lower air outlet 240 b is located at the lower part of the grill 240.
  • the opening 240c exposes the panel 14a to the indoor space.
  • the left suction port 240 d is located on the left side surface of the grill 240, and the right suction port 240 e is located on the right side surface of the grill 240.
  • the air is sucked in from the left suction port 240d and the right suction port 240e by the operation of the fan 23, passes between the heat-insulated back surface of the panel 14a and the suction passage forming plates 115 and 116, and is arranged upstream of the convection heat exchanger 13. Pass through the filtered filter 218. The air that has passed through the filter 218 is guided to the convection heat exchanger 13, exchanges heat with the convection heat exchanger 13, passes through the circular hole 216 a of the bell mouth 216, and enters the fan 23.
  • the air blown out from the fan 23 proceeds into the fan chamber 210a toward the upper blower outlet 240a and the lower blower outlet 240b, and is blown out from the upper blower outlet 240a and the lower blower outlet 240b.
  • the circular hole 216 a of the bell mouth 216 is slightly smaller than the inner diameter of the fan 23, and the air that has passed through the circular hole 216 a enters the inside of the fan 23, is pressurized by the vane, and is blown out toward the outer periphery of the fan 23. .
  • the motor support plate 215 is fixed between the upper part and the lower part of the fan chamber 210 a and supports the drive motor 23 a of the fan 23.
  • the drive motor 23a is screwed to the motor support plate 215 by screws 23b.
  • the bell mouth 216 closes the fan chamber 210a.
  • the electrical component box 24 is held in the electrical component chamber 210b.
  • the heat exchanger assembly 220 has a structure in which the convective heat exchanger 13 and the radiant heat exchanger 14 are combined.
  • a drain pan assembly 217 is disposed below the convection heat exchanger 13. For example, when air passes through the convection heat exchanger 13 during cooling operation, moisture contained in the air is condensed on the surface of the convection heat exchanger 13. The drain pan assembly 217 receives condensed water falling from the convection heat exchanger 13.
  • a blower outlet assembly 250 is attached to the upper blower outlet 240a.
  • the blower outlet assembly 250 has a louver that changes the blowing direction of air.
  • a left frame 241, a right frame 242, and an upper frame 243 are attached to the left end, the right end, and the upper end of the opening 240c of the grill 240, respectively.
  • FIG. 3 is a side view of the heat exchanger assembly.
  • the convection heat exchanger 13 and the radiant heat exchanger 14 are fixed by a mounting plate 221.
  • the mounting plate 221 is a sheet metal member that extends in a direction opposite to the panel 14a from the frame 14c of the radiant heat exchanger 14, and has a through hole 221a.
  • the convective heat exchanger 13 has tube plates 13c in the vicinity of both ends of each heat transfer tube 13b. A screw hole corresponding to the through hole 221a of the mounting plate 221 is formed in the tube plate 13c. The convective heat exchanger 13 and the mounting plate 221 are screwed through the through hole 221a.
  • FIG. 4 is a cross-sectional view showing a mounting structure between a panel of a radiant heat exchanger and a heat transfer tube.
  • the mounting bracket 14e faces the panel 14a with the heat transfer tube 14b interposed therebetween, and is screwed to the mounting portion 14d fixed to the panel 14a in advance by mounting screws 14f.
  • the attachment portion 14d has a screw hole 14da into which the attachment screw 14f is screwed.
  • the mounting bracket 14e has a flat plate portion 14ea, a raised portion 14eb, and a flange portion 14ec.
  • the flat plate portion 14ea is in close contact with the rear surface of the radiation surface of the panel 14a.
  • the raised portion 14eb is raised from the flat plate portion 14ea, and a U-shaped groove into which the heat transfer tube 14b is fitted is formed.
  • the flange portion 14ec rises from the end of the flat plate portion 14ea and is fixed to the attachment portion 14d.
  • a through hole 14ed corresponding to the screw hole 14da of the mounting portion 14d is formed in the flange portion 14ec.
  • the air conditioner 1 changes the refrigerant flow path with the four-way switching valve 12 to switch between the cooling operation and the heating operation.
  • the refrigerant circuit is a circuit for heating operation.
  • Heating operation the flow path indicated by the solid line in FIG. 1 is selected in the four-way switching valve 12, and the high-pressure gas refrigerant discharged from the compressor 11 flows separately to the branch pipe 40 and the convection heat exchanger 13.
  • the branch point is called A point.
  • the gas refrigerant that has entered the branch pipe 40 from the point A flows in the order of the on-off valve 41, the first check valve 42, the radiant heat exchanger 14 and the second check valve 43, and flows from the convective heat exchanger 13 side. To join.
  • the junction is called point B. Since the mounting bracket 14e and the heat transfer tube 14b are in close contact with the panel 14a (see FIG. 4), the heat of the gas refrigerant is conducted to the panel 14a through the heat transfer tube 14b, and the temperature of the panel 14a rises. Since the radiant heat is emitted from the panel 14a whose temperature has increased, the air and objects in front of the panel 14a are warmed. In the radiant heat exchanger 14, a part of the gas refrigerant is condensed by heat exchange with the panel 14a, and the liquid refrigerant and the gas refrigerant are mixed.
  • the gas refrigerant that has entered the convection heat exchanger 13 from the point A is condensed by exchanging heat with the convection air outside the convection heat exchanger 13.
  • the air whose temperature has increased in the convection heat exchanger 13 is blown out into the room and warms the room.
  • the liquid refrigerant that has exited the convection heat exchanger 13 joins with the refrigerant that has exited the radiant heat exchanger 14 at point B, and is directed to the outdoor heat exchanger 16, and is decompressed by the expansion valve 15 and enters the outdoor heat exchanger 16. .
  • the refrigerant exchanges heat with air convection outside the outdoor heat exchanger 16 and evaporates to become a gas refrigerant.
  • FIG. 5 is a graph showing the relationship between the temperature detected by the second temperature sensor and the operation of the on-off valve in the heating operation.
  • the on-off valve 41 switches the flow path from open to closed. That is, the on-off valve 41 switches from a state in which the refrigerant flows to the radiant heat exchanger 14 to a state in which the refrigerant flows only to the convective heat exchanger 13 without flowing to the radiant heat exchanger 14.
  • the on-off valve 41 switches the flow path from closed to open again, whereby the heating operation by the radiant heat exchanger 14 is restored. While the heating operation using only the convection heat exchanger 13 is performed, the liquid refrigerant and the gas refrigerant remain between the on-off valve 41 and the point B. In this state, when the liquid refrigerant spontaneously evaporates, the internal pressure between the on-off valve 41 and the point B increases. However, in the present embodiment, since the first check valve 42 is provided between the radiant heat exchanger 14 and the on-off valve 41, even if the liquid refrigerant spontaneously evaporates and the internal pressure rises, the radiant heat exchanger 14 The internal pressure does not reach the on-off valve 41.
  • the liquid refrigerant from the outdoor heat exchanger 16 is depressurized by the expansion valve 15 and enters the convection heat exchanger 13 on the way to the convection heat exchanger 13. Note that the liquid gas refrigerant tends to flow to the branch pipe 40 at the point B before entering the convection heat exchanger 13, but is blocked by the second check valve 43.
  • the liquid refrigerant that has entered the convection heat exchanger 13 exchanges heat with convection air outside the convection heat exchanger 13 and evaporates to become a gas refrigerant.
  • the air whose temperature has decreased in the convection heat exchanger 13 is blown out into the room and cools the room.
  • the gas refrigerant discharged from the convection heat exchanger 13 passes through the point A, goes to the four-way switching valve 12, passes through the four-way switching valve 12, and the accumulator 20, and returns to the compressor 11.
  • the on-off valve 41 is employed to open and close the branch pipe 40.
  • the function of blocking the flow path of the branch pipe 40 and the opening degree of the flow path of the branch pipe 40 are used.
  • An opening adjustment valve having a function of adjusting the angle may be employed.
  • FIG. 6 is a cross-sectional view of a radiant heat exchanger showing a second mounting structure between the panel and the heat transfer tube.
  • the mounting panel 141 has a flat plate portion 141a joined to the back surface of the panel 14a, and a raised portion 141b raised from the flat plate portion 141a.
  • the raised portion 141b is raised higher than the diameter of the heat transfer tube 14b, and a U-shaped groove 141c into which the heat transfer tube 14b is fitted is formed. After the heat transfer tube 14b is fitted into the U-shaped groove 141c, crimping is performed so that the open end of the U-shaped groove 141c presses the outer peripheral surface of the heat transfer tube 14b.
  • FIG. 7 is a cross-sectional view of the radiant heat exchanger showing a third mounting structure of the panel and the heat transfer tube.
  • the panel 14a and the heat transfer tube 14b are joined by brazing. Since the solder 140 spreads around the corner formed at the contact portion between the panel 14a and the heat transfer tube 14b, the thermal conductivity from the heat transfer tube 14b to the panel 14a is high.
  • FIG. 8 is a cross-sectional view of the radiant heat exchanger showing a fourth mounting structure of the panel and the heat transfer tube.
  • the first mounting bracket 341 has a flat plate portion 341a joined to the back surface of the panel 14a and a raised portion 341b raised from the flat plate portion 341a.
  • the flat plate portion 341a is joined so as to be in close contact with the back surface of the panel 14a by spot welding or brazing welding.
  • the raised portion 341b is raised to a diameter of the heat transfer tube 14b, and a U-shaped groove 341c into which the heat transfer tube 14b is fitted is formed. Further, screw holes 341d are formed on both sides of the U-shaped groove 341c.
  • the second mounting bracket 342 has a through hole 342 a corresponding to the screw hole 341 d of the first mounting bracket 341.
  • the second mounting bracket 342 is screwed to the first mounting bracket 341 with a screw 343 so as to cover the heat transfer tube 14b fitted in the U-shaped groove 341c. Since the heat transfer tube 14b slightly protrudes from the U-shaped groove 341c, when the second mounting bracket 342 is screwed to the first mounting bracket 341, the heat transfer tube 14b is compressed and closely contacts the U-shaped groove 341c.
  • FIG. 9 is a cross-sectional view of the radiant heat exchanger showing a fifth mounting structure of the panel and the heat transfer tube. In FIG.
  • the presser fitting 441 has a flat plate portion 441a joined to the back surface of the panel 14a and a U-shaped groove 441b that sandwiches the heat transfer tube 14b by the back surface of the panel 14a. After the heat transfer tube 14b is disposed on the back surface of the panel 14a, the U-shaped groove 441b of the presser fitting 441 covers the heat transfer tube 14b. In this state, the flat plate portion 441a and the back surface of the panel 14a are joined by spot welding or brazing welding.
  • FIG. 10 is a cross-sectional view of a radiant heat exchanger showing a sixth mounting structure of the panel and the heat transfer tube.
  • the panel 14a has a raised portion 541 at a portion corresponding to the arrangement position of the heat transfer tube 14b on the back surface.
  • the raised portion 541 is formed with a U-shaped groove 541 a into which the heat transfer tube 14 b is fitted.
  • the U-shaped groove 541a has such a depth that the outer peripheral surface of the heat transfer tube 14b slightly protrudes when the heat transfer tube 14b is fitted.
  • Screw holes 541b are formed on both sides of the U-shaped groove 541a.
  • the presser fitting 542 has a through hole 542 a corresponding to the screw hole 541 b of the raised portion 541.
  • the presser fitting 542 is screwed to the raised portion 541 with a screw 543 so as to cover the outer peripheral surface of the heat transfer tube 14 b slightly protruding from the raised portion 541.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

La présente invention concerne un climatiseur, configuré de telle manière qu'il ne se produit pas de cliquetis lors d'une opération de chauffage, même si un frigorigène liquéfié par un échangeur à rayonnement thermique reste dans l'échangeur à rayonnement thermique et à proximité d'un clapet marche-arrêt. Un climatiseur (1) est équipé d'un premier clapet anti-retour (42) situé entre un échangeur à rayonnement thermique (14) et un clapet marche-arrêt (41). Lorsque le clapet marche-arrêt (41) se trouve à l'état fermé, la quantité de frigorigène liquide présent entre le clapet marche-arrêt (41) et le premier clapet anti-retour (42) est faible, et, de ce fait, même si le frigorigène liquide s'évapore naturellement pour augmenter la pression interne, il ne se produit pas de cliquetis du fait que la pression n'atteint pas un niveau suffisant pour ouvrir le clapet marche-arrêt (41).
PCT/JP2010/001812 2009-03-18 2010-03-15 Climatiseur WO2010106771A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2010225998A AU2010225998B2 (en) 2009-03-18 2010-03-15 Air conditioner
US13/256,034 US20120000224A1 (en) 2009-03-18 2010-03-15 Air conditioner
CN2010800118323A CN102348936A (zh) 2009-03-18 2010-03-15 空调机
EP10753268A EP2410250A1 (fr) 2009-03-18 2010-03-15 Climatiseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009066768A JP5229031B2 (ja) 2009-03-18 2009-03-18 空調機
JP2009-066768 2009-03-18

Publications (1)

Publication Number Publication Date
WO2010106771A1 true WO2010106771A1 (fr) 2010-09-23

Family

ID=42739438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/001812 WO2010106771A1 (fr) 2009-03-18 2010-03-15 Climatiseur

Country Status (6)

Country Link
US (1) US20120000224A1 (fr)
EP (1) EP2410250A1 (fr)
JP (1) JP5229031B2 (fr)
CN (1) CN102348936A (fr)
AU (1) AU2010225998B2 (fr)
WO (1) WO2010106771A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012060227A1 (fr) * 2010-11-05 2012-05-10 ダイキン工業株式会社 Climatiseur
WO2012099062A1 (fr) * 2011-01-18 2012-07-26 ダイキン工業株式会社 Climatiseur
WO2012099192A1 (fr) * 2011-01-19 2012-07-26 ダイキン工業株式会社 Climatiseur
CN103154621A (zh) * 2010-10-08 2013-06-12 大金工业株式会社 空调机
EP2631560A1 (fr) * 2010-10-20 2013-08-28 Daikin Industries, Ltd. Climatiseur
EP2667108A4 (fr) * 2011-01-19 2017-09-27 Daikin Industries, Ltd. Climatiseur

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2468947B1 (fr) * 2010-12-27 2018-10-03 Electrolux Home Products Corporation N.V. Système de pompe à chaleur pour sèche-linge et procédé de fonctionnement d'un système de pompe à chaleur de sèche-linge
JP5115667B2 (ja) * 2011-01-17 2013-01-09 ダイキン工業株式会社 空気調和機
JP2014034301A (ja) * 2012-08-09 2014-02-24 Denso Corp 冷凍サイクル装置
TWI493144B (zh) 2012-09-07 2015-07-21 Ind Tech Res Inst 熱交換循環系統
CN102853595A (zh) * 2012-10-12 2013-01-02 天津商业大学 一种制冷系统
JP2013076565A (ja) * 2013-01-23 2013-04-25 Daikin Industries Ltd 空気調和機
WO2015132966A1 (fr) * 2014-03-07 2015-09-11 三菱電機株式会社 Dispositif à cycle de réfrigération
CN106895597A (zh) * 2017-03-08 2017-06-27 江西清华泰豪三波电机有限公司 风冷调温热泵型除湿机组
CN111615608B (zh) * 2018-02-19 2022-04-05 大金工业株式会社 空调装置
US20200282808A1 (en) * 2019-03-04 2020-09-10 Denso International America, Inc. Unidirectional Heat Exchanger

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448140A (ja) * 1990-06-18 1992-02-18 Toshiba Corp 空気調和機
JPH0432434U (fr) * 1990-07-16 1992-03-17
JPH04369327A (ja) * 1991-06-17 1992-12-22 Sharp Corp 空気調和機
JPH0533968A (ja) * 1991-07-26 1993-02-09 Sharp Corp 空気調和機
JPH06307727A (ja) * 1993-04-27 1994-11-01 Matsushita Electric Ind Co Ltd 蓄熱暖房装置とその制御方法
JPH0755234A (ja) 1993-08-16 1995-03-03 Toshiba Corp 空気調和装置
JP2005016919A (ja) * 2003-06-30 2005-01-20 Daikin Ind Ltd 空気調和装置
JP2007178058A (ja) * 2005-12-28 2007-07-12 Daikin Ind Ltd 空気調和装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05280762A (ja) * 1992-03-30 1993-10-26 Toshiba Corp 輻射パネル付室内ユニット
CN2249373Y (zh) * 1995-12-05 1997-03-12 马惠民 可提供热水的冷暖房间空调器
CN2293019Y (zh) * 1997-03-10 1998-09-30 广东美的集团股份有限公司 一拖二型分体空调器
US20080307819A1 (en) * 2007-06-12 2008-12-18 Pham Hung M Refrigeration monitoring system and method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448140A (ja) * 1990-06-18 1992-02-18 Toshiba Corp 空気調和機
JPH0432434U (fr) * 1990-07-16 1992-03-17
JPH04369327A (ja) * 1991-06-17 1992-12-22 Sharp Corp 空気調和機
JPH0533968A (ja) * 1991-07-26 1993-02-09 Sharp Corp 空気調和機
JPH06307727A (ja) * 1993-04-27 1994-11-01 Matsushita Electric Ind Co Ltd 蓄熱暖房装置とその制御方法
JPH0755234A (ja) 1993-08-16 1995-03-03 Toshiba Corp 空気調和装置
JP2005016919A (ja) * 2003-06-30 2005-01-20 Daikin Ind Ltd 空気調和装置
JP2007178058A (ja) * 2005-12-28 2007-07-12 Daikin Ind Ltd 空気調和装置

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103154621B (zh) * 2010-10-08 2016-02-24 大金工业株式会社 空调机
CN103154621A (zh) * 2010-10-08 2013-06-12 大金工业株式会社 空调机
EP2631560A4 (fr) * 2010-10-20 2014-04-30 Daikin Ind Ltd Climatiseur
EP2631560A1 (fr) * 2010-10-20 2013-08-28 Daikin Industries, Ltd. Climatiseur
AU2011319038B2 (en) * 2010-10-20 2015-04-09 Daikin Industries, Ltd. Air conditioner
JP2012112638A (ja) * 2010-11-05 2012-06-14 Daikin Industries Ltd 空気調和機
EP2636961A4 (fr) * 2010-11-05 2018-03-21 Daikin Industries, Ltd. Climatiseur
WO2012060227A1 (fr) * 2010-11-05 2012-05-10 ダイキン工業株式会社 Climatiseur
AU2011324586B2 (en) * 2010-11-05 2015-09-24 Daikin Industries, Ltd. Air conditioner
CN103201565A (zh) * 2010-11-05 2013-07-10 大金工业株式会社 空调机
JP2012149803A (ja) * 2011-01-18 2012-08-09 Daikin Industries Ltd 空気調和機
CN103314259A (zh) * 2011-01-18 2013-09-18 大金工业株式会社 空调机
AU2012207985B2 (en) * 2011-01-18 2015-05-14 Daikin Industries, Ltd. Air conditioner
EP2667105A4 (fr) * 2011-01-18 2016-12-28 Daikin Ind Ltd Climatiseur
WO2012099062A1 (fr) * 2011-01-18 2012-07-26 ダイキン工業株式会社 Climatiseur
JP2012149836A (ja) * 2011-01-19 2012-08-09 Daikin Industries Ltd 空気調和機
WO2012099192A1 (fr) * 2011-01-19 2012-07-26 ダイキン工業株式会社 Climatiseur
EP2667108A4 (fr) * 2011-01-19 2017-09-27 Daikin Industries, Ltd. Climatiseur

Also Published As

Publication number Publication date
US20120000224A1 (en) 2012-01-05
AU2010225998B2 (en) 2012-12-13
JP5229031B2 (ja) 2013-07-03
AU2010225998A1 (en) 2011-11-03
JP2010216767A (ja) 2010-09-30
EP2410250A1 (fr) 2012-01-25
CN102348936A (zh) 2012-02-08

Similar Documents

Publication Publication Date Title
JP5229031B2 (ja) 空調機
JP5125355B2 (ja) 空気調和装置
JP5974960B2 (ja) 電池温度調整装置
WO2015056477A1 (fr) Dispositif de climatisation
JP5869955B2 (ja) 輻射式空気調和機
JP6254349B2 (ja) ヒートポンプ機器の室外機
WO2010106776A1 (fr) Dispositif de climatisation
US11530827B2 (en) Heat source unit and air conditioner having the heat source unit
JP5834625B2 (ja) ヒートポンプ給湯装置
JP5028927B2 (ja) 空気調和装置
JP2011112254A (ja) 冷凍装置
JP6310077B2 (ja) 熱源システム
JP2014052087A (ja) 給湯用熱交換器
KR100930762B1 (ko) 공기 조화기
JP4605725B2 (ja) 増設凝縮装置及びこれを用いた増設凝縮システム付冷凍サイクル装置
JP5387523B2 (ja) 冷却装置
JP2009270732A (ja) 空気調和装置の室外ユニット
JP2016102598A (ja) 給湯空調システム
JP6092566B2 (ja) 室外機
JP5786781B2 (ja) 空気調和装置のグリル
JP2011033216A (ja) 空気調和機
JP2011112253A (ja) 冷凍装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201080011832.3

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10753268

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 13256034

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2010753268

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2010225998

Country of ref document: AU

Date of ref document: 20100315

Kind code of ref document: A