WO2010079570A1 - Unité de chauffage par induction électromagnétique et dispositif de climatisation - Google Patents

Unité de chauffage par induction électromagnétique et dispositif de climatisation Download PDF

Info

Publication number
WO2010079570A1
WO2010079570A1 PCT/JP2009/007240 JP2009007240W WO2010079570A1 WO 2010079570 A1 WO2010079570 A1 WO 2010079570A1 JP 2009007240 W JP2009007240 W JP 2009007240W WO 2010079570 A1 WO2010079570 A1 WO 2010079570A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromagnetic induction
induction heating
heating unit
refrigerant
magnetic
Prior art date
Application number
PCT/JP2009/007240
Other languages
English (en)
Japanese (ja)
Inventor
岡田敏江
石井英宏
若嶋真博
浅田聡
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 CN2009801490965A priority Critical patent/CN102227951A/zh
Priority to JP2010545640A priority patent/JP5267572B2/ja
Priority to EP09837460A priority patent/EP2381740A1/fr
Publication of WO2010079570A1 publication Critical patent/WO2010079570A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/01—Heaters

Definitions

  • the present invention relates to an electromagnetic induction heating unit and an air conditioner.
  • the refrigeration cycle includes a radiator that releases heat of the refrigerant, a heater that gives heat to the refrigerant, and the like.
  • the refrigerant circulating in the refrigeration cycle obtains heat by exchanging heat with indoor air in the cooling operation cycle, and exchanges heat with outdoor air in the heating operation cycle. Getting fever.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 8-210720
  • not only heat is obtained from indoor air or outdoor air as described above, but refrigerant heating is performed separately.
  • a system has been proposed in which a refrigerant obtains heat with an apparatus.
  • this refrigerant heating apparatus heat is applied to the refrigerant flowing through the heat exchanger by heating the heat exchanger through which the refrigerant flows with a burner.
  • this air conditioner employs a refrigerant heating device, when the refrigerant requires heat, it is possible to heat the refrigerant without being restricted by indoor or outdoor temperature. ing.
  • an electromagnetic induction heating method can be adopted as an electric method, instead of a heating method using a burner or the like.
  • an electromagnetic induction coil is wound around a refrigerant pipe containing a magnetic material, and the refrigerant pipe can be caused to generate heat due to a magnetic flux generated by passing an electric current through the electromagnetic induction heating coil.
  • coolant can be heated using the heat_generation
  • a magnetic field is generated when the refrigerant pipe is heated by electromagnetic induction, a magnetic field is generated not only in the refrigerant pipe but also in other portions.
  • the present invention has been made in view of the above-described points, and an object of the present invention is to leak into a portion other than the refrigerant pipe even when electromagnetic induction heating is performed by generating a magnetic field by an electromagnetic induction heating unit.
  • An object of the present invention is to provide an electromagnetic induction heating unit and an air conditioner that can suppress a magnetic field to be small.
  • An electromagnetic induction heating unit is an electromagnetic induction heating unit that heats a refrigerant pipe and / or a member that is in thermal contact with a refrigerant flowing in the refrigerant pipe, and includes a coil, an external member, and a magnetic part. It has.
  • the coil is disposed in the vicinity of the refrigerant pipe.
  • the external member is disposed around the refrigerant pipe and includes a magnetic body.
  • the magnetic body portion is disposed on the outer side opposite to the inner side on the refrigerant piping side of the coil and on the inner side of the external member, and includes a magnetic material having a higher magnetic permeability than the external member.
  • both end portions of the external member are positioned inside the both end portions of the magnetic body portion.
  • heating by the electromagnetic induction heating unit for example, when electromagnetic induction heating is performed on a heat generating member that is in thermal contact with the refrigerant pipe, heat generation that is in thermal contact with the refrigerant flowing in the refrigerant pipe It includes at least a case where the member is heated by electromagnetic induction and a case where the heat generating member constituting at least a part of the refrigerant pipe is heated by electromagnetic induction.
  • a magnetic field may be generated not only for the purpose of generating heat but also for the surroundings.
  • the magnetic body part including the magnetic material having higher permeability than the external member is arranged outside the coil, the magnetic field generated in the part other than the refrigerant pipe is The magnetic material portion is preferentially passed over the external member.
  • the both end portions of the external member are positioned on the inner side of the both end portions of the magnetic body portion, so that the magnetic flux that leaks to the portion other than the refrigerant pipe is more than the external member. It can be captured more efficiently.
  • the magnetic field generated in a portion other than the refrigerant pipe can be efficiently passed through the magnetic body portion, it leaks to a portion other than the magnetic body portion outside the magnetic body portion. The degree can be kept small.
  • the electromagnetic induction heating unit of the second invention is the electromagnetic induction heating unit of the first invention, wherein the coil surrounds at least a part of the refrigerant pipe.
  • this electromagnetic induction heating unit a part of the magnetic flux generated by passing a current through the coil can be made to extend in the direction in which the refrigerant pipe extends. For this reason, the heating efficiency by electromagnetic induction can be improved when the longitudinal direction of the magnetic body contained in the refrigerant pipe and the axial direction of the refrigerant pipe are substantially the same.
  • the electromagnetic induction heating unit is the electromagnetic induction heating unit according to the first or second aspect, wherein at least a part of the magnetic body portion is relative to one side of the coil and the coil in the direction in which the refrigerant pipe extends. It extends to at least one of the other side opposite to the one side.
  • the magnetic body portion can take in the magnetic flux that is generated by supplying power to the coil and that leaks to the side opposite to the refrigerant pipe before being guided to the external member. For this reason, the magnetic body portion can suppress more magnetic field leakage than the external member. This not only reduces the magnetic field leakage outside the magnetic body part, but also captures the magnetic field that the external member leaks outside the magnetic body part, thereby more effectively preventing the magnetic field leakage outside the external member. Can be reduced.
  • the electromagnetic induction heating unit is the electromagnetic induction heating unit according to any one of the first to third aspects of the invention, wherein at least a part of the magnetic body portion is outside the refrigerant pipe as viewed in the axial direction of the refrigerant pipe. Extending to the inside of the coil. In this electromagnetic induction heating unit, it is possible to more efficiently pass the magnetic body part by suppressing the extent to which the magnetic field generated by the coil leaks to a part other than the magnetic body part.
  • the electromagnetic induction heating unit is the electromagnetic induction heating unit according to any one of the first to fourth aspects of the present invention, wherein the magnetic part has a plurality of magnetic parts arranged in contact with each other. .
  • the magnetic body portion is not formed as an integral member along the target shape, but a plurality of parts can be combined into the target shape. And since these magnetic body components are arrange
  • the electromagnetic induction heating unit is the electromagnetic induction heating unit according to any one of the first to fifth aspects of the present invention, wherein the magnetic part includes a good conductor material.
  • the magnetic body portion contains a good conductor material. Heat can be kept small.
  • An electromagnetic induction heating unit is the electromagnetic induction heating unit according to any one of the first to sixth aspects of the invention, wherein the magnetic body portion includes ferrite.
  • the magnetic flux can be allowed to actively pass through the magnetic body portion containing ferrite, and the magnetic field leaking outside the magnetic body portion can be kept small.
  • An air conditioner includes the electromagnetic induction heating unit according to any one of the first aspect to the seventh aspect, and a refrigeration cycle including a portion for flowing a refrigerant through a refrigerant pipe.
  • a refrigeration cycle including a portion for flowing a refrigerant through a refrigerant pipe.
  • the electromagnetic induction heating unit according to the first aspect of the invention it is possible to reduce the degree of leakage to a portion other than the magnetic body portion outside the magnetic body portion.
  • the heating efficiency by electromagnetic induction can be improved.
  • the electromagnetic induction heating unit according to the third aspect of the invention not only the magnetic field leakage outside the magnetic body portion is reduced, but also the external member captures the magnetic field leaking outside the magnetic body portion, thereby Magnetic field leakage can be reduced more effectively.
  • the electromagnetic induction heating unit of the fourth aspect of the invention the magnetic part can be passed more efficiently.
  • the Joule heat generated by the electrical resistance can be kept small.
  • the magnetic field that leaks outside the magnetic body portion can be kept small.
  • the air conditioner according to the eighth aspect of the invention even when electromagnetic induction heating is performed in the air conditioner, the influence on the surroundings of the electromagnetic induction heating unit can be reduced.
  • It is an external appearance perspective view including the front side of an outdoor unit.
  • It is an internal arrangement configuration perspective view of an outdoor unit.
  • It is an external appearance perspective view containing the back side of the internal arrangement structure of an outdoor unit.
  • It is a whole front perspective view which shows the internal structure of the machine room of an outdoor unit.
  • It is a perspective view which shows the internal structure of the machine room of an outdoor unit.
  • It is a top view about the arrangement
  • It is a schematic perspective view of the electromagnetic induction heating unit attached to the accumulation tube.
  • FIG. 1 is a refrigerant circuit diagram showing a refrigerant circuit 10 of the air conditioner 1.
  • the air conditioner 1 is an air conditioner in a space where a use side device is arranged by connecting an outdoor unit 2 as a heat source side device and an indoor unit 4 as a use side device by a refrigerant pipe.
  • An electromagnetic induction heating unit 6 and the like are provided.
  • the compressor 21, the four-way switching valve 22, the outdoor heat exchanger 23, the outdoor electric expansion valve 24, the accumulator 25, the outdoor fan 26, the hot gas bypass valve 27, the capillary tube 28, and the electromagnetic induction heating unit 6 are included in the outdoor unit 2. Is housed in.
  • the indoor heat exchanger 41 and the indoor fan 42 are accommodated in the indoor unit 4.
  • the refrigerant circuit 10 includes a discharge pipe A, an indoor gas pipe B, an indoor liquid pipe C, an outdoor liquid pipe D, an outdoor gas pipe E, an accumulator pipe F, a suction pipe G, a hot gas bypass circuit H, and a branch pipe K. And a merging pipe J.
  • the indoor side gas pipe B and the outdoor side gas pipe E pass a large amount of refrigerant in the gas state, but the refrigerant passing therethrough is not limited to the gas refrigerant.
  • the indoor side liquid pipe C and the outdoor side liquid pipe D pass a large amount of liquid refrigerant, but the refrigerant passing therethrough is not limited to liquid refrigerant.
  • the discharge pipe A connects the compressor 21 and the four-way switching valve 22.
  • the discharge pipe A is provided with a discharge temperature sensor 29d for detecting the temperature of the refrigerant passing therethrough.
  • the power supply unit 21 e supplies power to the compressor 21.
  • the amount of power supplied from the power supply unit 21e is detected by the compressor power detection unit 29f.
  • the indoor side gas pipe B connects the four-way switching valve 22 and the indoor heat exchanger 41.
  • a pressure sensor 29a for detecting the pressure of the refrigerant passing therethrough is provided.
  • the indoor side liquid pipe C connects the indoor heat exchanger 41 and the outdoor electric expansion valve 24.
  • the outdoor liquid pipe D connects the outdoor electric expansion valve 24 and the outdoor heat exchanger 23.
  • the outdoor gas pipe E connects the outdoor heat exchanger 23 and the four-way switching valve 22.
  • the accumulator pipe F connects the four-way switching valve 22 and the accumulator 25, and extends in the vertical direction when the outdoor unit 2 is installed.
  • An electromagnetic induction heating unit 6 is attached to a part of the accumulator tube F.
  • the magnetic tube F2 is made of SUS (Stainless Used Steel) 430.
  • the SUS430 is a ferromagnetic material, and generates eddy currents when placed in a magnetic field, and generates heat due to Joule heat generated by its own electrical resistance.
  • Portions other than the magnetic pipe F2 among the pipes constituting the refrigerant circuit 10 are made of copper pipes.
  • surroundings of the said copper pipe is not limited to SUS430,
  • An alloy containing at least two selected metals can be used.
  • SUS include two types of ferrite and martensite and combinations of these types.
  • a material that is ferromagnetic and has a relatively high electrical resistance and a Curie temperature higher than the operating temperature range is preferable.
  • the accumulator tube F here requires more electric power, but does not have to include a magnetic body and a material containing the magnetic body, and contains a material to be subjected to induction heating. It may be a thing.
  • the magnetic material may constitute all of the accumulator tube F, or may be formed only on the inner surface of the accumulator tube F, and is contained in the material constituting the accumulator tube F. May exist.
  • the accumulator tube F can be heated by electromagnetic induction, and the refrigerant sucked into the compressor 21 via the accumulator 25 can be warmed.
  • the heating capability of the air conditioning apparatus 1 can be improved.
  • the lack of capacity at the time of starting can be compensated for by the rapid heating by the electromagnetic induction heating unit 6.
  • the electromagnetic induction heating unit 6 quickly opens the accumulator tube F.
  • the compressor 21 can compress the rapidly heated refrigerant as a target. For this reason, the temperature of the hot gas discharged from the compressor 21 can be raised rapidly. Thereby, the time required for defrosting by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.
  • the suction pipe G connects the accumulator 25 and the suction side of the compressor 21.
  • the hot gas bypass circuit H connects a branch point A1 provided in the middle of the discharge pipe A and a branch point D1 provided in the middle of the outdoor liquid pipe D.
  • a hot gas bypass valve 27 capable of switching between a state allowing the passage of the refrigerant and a state not allowing the refrigerant is arranged in the middle.
  • a capillary tube 28 is provided between the hot gas bypass valve 27 and the branch point D1 to reduce the pressure of refrigerant passing therethrough.
  • the capillary tube 28 can be brought close to the pressure after the refrigerant pressure is reduced by the outdoor electric expansion valve 24 during heating operation, the capillary tube 28 is a chamber by supplying hot gas to the outdoor liquid pipe D through the hot gas bypass circuit H. An increase in the refrigerant pressure in the outer liquid pipe D can be suppressed.
  • the branch pipe K constitutes a part of the outdoor heat exchanger 23, and a refrigerant pipe extending from the gas side inlet / outlet 23e of the outdoor heat exchanger 23 will be described later in order to increase the effective surface area for heat exchange. It is a pipe branched into a plurality of lines at a branching junction 23k.
  • the branch pipe K includes a first branch pipe K1, a second branch pipe K2, and a third branch pipe K3 that extend independently from the branch junction point 23k to the junction branch point 23j.
  • the pipes K1, K2, and K3 merge at the merge branch point 23j. Note that, when viewed from the merging pipe J side, the branch pipe K extends at a merging branch point 23j.
  • the junction pipe J constitutes a part of the outdoor heat exchanger 23 and extends from the junction branch point 23j to the liquid side inlet / outlet 23d of the outdoor heat exchanger 23.
  • the junction pipe J can unify the degree of supercooling of the refrigerant flowing out of the outdoor heat exchanger 23 during the cooling operation, and can defrost frosted ice near the lower end of the outdoor heat exchanger 23 during the heating operation.
  • the junction pipe J has a cross-sectional area that is approximately three times the cross-sectional area of each of the branch pipes K1, K2, and K3, and the amount of refrigerant passing through is approximately three times that of each of the branch pipes K1, K2, and K3. .
  • the four-way switching valve 22 can switch between a cooling operation cycle and a heating operation cycle.
  • the connection state when performing the heating operation is indicated by a solid line
  • the connection state when performing the cooling operation is indicated by a dotted line.
  • the indoor heat exchanger 41 functions as a refrigerant cooler
  • the outdoor heat exchanger 23 functions as a refrigerant heater
  • the indoor heat exchanger 41 functions as a refrigerant heater.
  • the outdoor heat exchanger 23 includes a gas side inlet / outlet 23e, a liquid side inlet / outlet 23d, a branch junction 23k, a junction branch point 23j, a branch pipe K, a junction pipe J, and a heat exchange fin 23z.
  • the gas side inlet / outlet 23 e is located at the end of the outdoor heat exchanger 23 on the outdoor gas pipe E side, and is connected to the outdoor gas pipe E.
  • the liquid side inlet / outlet 23 d is located at the end of the outdoor heat exchanger 23 on the outdoor liquid pipe D side, and is connected to the outdoor liquid pipe D.
  • the branch junction 23k branches a pipe extending from the gas side inlet / outlet port 23e, and can branch or join the refrigerant according to the direction of the flowing refrigerant.
  • a plurality of branch pipes K extend from each branch portion at the branch junction 23k.
  • the junction branch point 23j joins the branch pipe K and can join or branch the refrigerant according to the direction of the flowing refrigerant.
  • the junction pipe J extends from the junction branch point 23j to the liquid side inlet / outlet 23d.
  • the heat exchange fins 23z are configured by arranging a plurality of plate-like aluminum fins in the thickness direction and arranged at predetermined intervals.
  • the branch pipe K and the merge pipe J both have the heat exchange fins 23z as a common penetration target.
  • the branch pipe K and the junction pipe J are disposed so as to penetrate in the plate pressure direction at different portions of the common heat exchange fin 23z.
  • an outdoor air temperature sensor 29b for detecting the outdoor air temperature is provided on the leeward side of the outdoor fan 26 in the air flow direction.
  • the outdoor heat exchanger 23 is provided with an outdoor heat exchange temperature sensor 29c that detects the temperature of the refrigerant flowing through the branch pipe K.
  • an indoor temperature sensor 43 that detects the indoor temperature is provided.
  • the indoor heat exchanger 41 is provided with an indoor heat exchanger temperature sensor 44 that detects the refrigerant temperature on the indoor liquid pipe C side to which the outdoor electric expansion valve 24 is connected.
  • the outdoor control unit 12 that controls the devices arranged in the outdoor unit 2 and the indoor control unit 13 that controls the devices arranged in the indoor unit 4 are connected by the communication line 11a, so that the control unit 11 is constituted.
  • the control unit 11 performs various controls for the air conditioner 1.
  • the outdoor control unit 12 is provided with a timer 95 that counts elapsed time when performing various controls. Note that a controller 90 that accepts a setting input from the user is connected to the control unit 11.
  • Outdoor unit 2 In FIG. 2, the external appearance perspective view of the front side of the outdoor unit 2 is shown. In FIG. 3, the perspective view about the positional relationship with the outdoor heat exchanger 23 and the outdoor fan 26 is shown. In FIG. 4, the perspective view of the back side of the outdoor heat exchanger 23 is shown.
  • the outdoor unit 2 has an outer surface formed by a substantially rectangular parallelepiped outdoor unit casing that includes a top plate 2a, a bottom plate 2b, a front panel 2c, a left side panel 2d, a right side panel 2f, and a back panel 2e.
  • an outdoor heat exchanger 23, an outdoor fan 26, and the like are arranged, a blower room on the left side panel 2d side, a compressor 21 and an electromagnetic induction heating unit 6 are arranged, and the right side panel 2f side.
  • the machine room is separated by a partition plate 2h.
  • the outdoor unit 2 is fixed by being screwed to the bottom plate 2b, and has an outdoor unit support 2g that forms the lowermost end portion of the outdoor unit 2 on the right side and the left side.
  • the electromagnetic induction heating unit 6 is disposed at an upper position in the vicinity of the left side panel 2d and the top plate 2a in the machine room.
  • the heat exchange fins 23z of the outdoor heat exchanger 23 described above are arranged side by side in the plate thickness direction so that the plate thickness direction is substantially horizontal.
  • the joining pipe J is disposed in the lowermost portion of the heat exchange fins 23z of the outdoor heat exchanger 23 by penetrating the heat exchange fins 23z in the thickness direction.
  • the hot gas bypass circuit H is arranged along the lower side of the outdoor fan 26 and the outdoor heat exchanger 23.
  • FIG. 5 is an overall front perspective view showing the internal structure of the machine room of the outdoor unit 2.
  • FIG. 6 is a perspective view showing the internal structure of the machine room of the outdoor unit 2.
  • FIG. 7 the perspective view about the arrangement
  • FIG. 8 the top view about the arrangement
  • the partition plate 2h of the outdoor unit 2 includes a fan room in which the outdoor heat exchanger 23 and the outdoor fan 26 are arranged, a machine room in which the electromagnetic induction heating unit 6, the compressor 21, the accumulator 25, and the like are arranged, Is partitioned from the upper end to the lower end from the front to the rear.
  • the compressor 21 and the accumulator 25 are disposed in a space below the machine room of the outdoor unit 2.
  • the electromagnetic induction heating unit 6, the four-way switching valve 22, and the outdoor control unit 12 are disposed in a space above the machine room of the outdoor unit 2 and above the compressor 21, the accumulator 25, and the like. .
  • the tube 28 and the electromagnetic induction heating unit 6 include a discharge pipe A, an indoor side gas pipe B, an outdoor side liquid pipe D, an outdoor side gas pipe E, an accumulator so as to execute the refrigeration cycle by the refrigerant circuit 10 shown in FIG. They are connected via a tube F, a hot gas bypass circuit H, and the like.
  • the hot gas bypass circuit H is configured by connecting nine parts of the first bypass part H1 to the ninth bypass part H9, and when the refrigerant flows into the hot gas bypass circuit H, , Flows in the direction from the first bypass portion H1 toward the ninth bypass portion H9 in order.
  • FIG. 9 is a schematic perspective view of the electromagnetic induction heating unit 6 attached to the accumulator tube F.
  • FIG. 10 shows an external perspective view of the electromagnetic induction heating unit 6 with the shielding cover 75 removed.
  • FIG. 11 is a cross-sectional view of the electromagnetic induction heating unit 6 attached to the accumulator tube F.
  • the electromagnetic induction heating unit 6 is disposed so as to cover the magnetic tube F2 that is a heat generating portion of the accumulator tube F from the outside in the radial direction, and causes the magnetic tube F2 to generate heat by electromagnetic induction heating.
  • the heat generating portion of the accumulator tube F has a double tube structure having an inner copper tube F1 and an outer magnetic tube F2.
  • the electromagnetic induction heating unit 6 includes a first hexagon nut 61, a second hexagon nut 66, a first bobbin lid 63, a second bobbin lid 64, a bobbin body 65, a first ferrite case 71, a second ferrite case 72, and a third ferrite.
  • a case 73, a fourth ferrite case 74, a first ferrite 98, a second ferrite 99, a coil 68, a shielding cover 75, the thermistor 14 and a fuse 15 are provided.
  • the first hex nut 61 and the second hex nut 66 are made of resin, and stabilize the fixed state between the electromagnetic induction heating unit 6 and the accumulator tube F using a C-shaped ring (not shown).
  • the first bobbin lid 63 and the second bobbin lid 64 are made of resin and cover the accumulator tube F from the radially outer side at the upper end position and the lower end position, respectively.
  • the first bobbin lid 63 and the second bobbin lid 64 have four screw holes for screws 69 for screwing first to fourth ferrite cases 71 to 74, which will be described later, through the screws 69. ing.
  • the second bobbin lid 64 has an electromagnetic induction thermistor insertion opening 64f for inserting the thermistor 14 and attaching it to the outer surface of the magnetic tube F2.
  • the second bobbin lid 64 has a fuse insertion opening 64e for inserting the fuse 15 shown in FIG. 13 and attaching it to the outer surface of the magnetic tube F2.
  • the thermistor 14 transmits the detected temperature as a signal to the control unit 11.
  • the fuse 15 transmits the detection result to the control unit 11 as a signal.
  • the bobbin main body 65 is made of resin, and the coil 68 is wound around it.
  • the coil 68 is wound spirally around the outside of the bobbin main body 65 with the direction in which the accumulator tube F extends as the axial direction.
  • the coil 68 is connected to a control printed board 18 (not shown) and receives a high-frequency current.
  • the output of the control printed circuit board is controlled by the control unit 11.
  • the thermistor 14 and the fuse 15 are attached in a state where the bobbin main body 65 and the second bobbin lid 64 are fitted together.
  • the plate spring 16 is pushed inward in the radial direction of the magnetic tube F 2, thereby maintaining a good pressure contact state with the outer surface of the magnetic tube F 2.
  • the attachment state of the fuse 15 is also pressed by the leaf spring 17 inward in the radial direction of the magnetic tube F2, so that a good pressure contact state with the outer surface of the magnetic tube F2 is maintained.
  • the thermistor 14 and the fuse 15 are kept in good contact with the outer surface of the accumulator tube F, the responsiveness is improved, and a sudden temperature change due to electromagnetic induction heating can be detected quickly. I have to.
  • the first ferrite case 71 is sandwiched between the first bobbin lid 63 and the second bobbin lid 64 from the direction in which the accumulator tube F extends, and is fixed by screwing with screws 69.
  • the first ferrite case 71 to the fourth ferrite case 74 contain the first ferrite 98 and the second ferrite 99 made of ferrite, which is a material having high magnetic permeability. As shown in the magnetic flux explanatory diagram of FIG. 13, the first ferrite 98 and the second ferrite 99 take in the magnetic field generated by the coil 68 to form a path for the magnetic flux, thereby preventing the magnetic field from leaking to the outside. .
  • the shielding cover 75 is disposed on the outermost peripheral portion of the electromagnetic induction heating unit 6 and collects magnetic flux that cannot be drawn only by the first ferrite 98 and the second ferrite 99. Almost no leakage magnetic flux is generated outside the shielding cover 75, and the location where the magnetic flux is generated can be determined.
  • FIG. 14 is a schematic perspective view of the first ferrite case 71 in which the first ferrite 98 and the second ferrite 99 are accommodated and fixed.
  • FIG. 15 shows a structure in the vicinity of the screwed portion on the upper side of the first ferrite case 71.
  • FIG. 16 shows a structure in the vicinity of the screwed portion on the lower side of the first ferrite case 71. Note that the first to fourth ferrite cases 71 to 74 all have the same shape.
  • the first ferrite case 71 is made of resin, and has a function of sandwiching and fixing the first bobbin lid 63 and the second bobbin lid 64 from the direction in which the accumulator tube F extends, and the first ferrite 98 and the second ferrite. 99 has a function of accommodating and holding 99.
  • the first ferrite case 71 includes a bottom surface portion 71j, a side surface portion 71h, a first lid screwing portion 71a, a first lid screwing hole 71b, a second lid screwing portion 71f, a second lid screwing hole 71g, and a shielding cover screw. It has a wearing part 71c and a shielding cover screwing hole 71d.
  • the bottom surface portion 71 j constitutes the bottom surface of the first ferrite case 71. As will be described later, the first ferrite 98 and the second ferrite 99 are bonded to the bottom surface portion 71j.
  • the bottom surface portion 71j In a state where the bottom surface portion 71j is fixed to the electromagnetic induction heating unit 6, the bottom surface portion 71j is provided at a position where the surface faces the radial direction, and the longitudinal direction is provided along the direction in which the accumulator tube F extends.
  • the bottom surface portion 71j is attached to any one of four symmetrically provided substantially linear sides among the radial outer edges of the first bobbin lid 63 and the second bobbin lid 64.
  • the back surface side of the bottom surface portion 71j and the substantially linear sides of the first bobbin lid 63 and the second bobbin lid 64 are fixed in contact with each other.
  • the 1st ferrite case 71 has the structure where the movement to the circumferential direction was controlled.
  • the side surface portion 71h has a surface extending in a direction away from the bottom surface portion 71j from both ends in a direction orthogonal to the longitudinal direction of the bottom surface portion 71j.
  • the first lid screwing portion 71a is provided for screwing the first ferrite case 71 and the first bobbin lid 63, and is located away from the radially extending virtual space sandwiched between the two side surface portions 71h. Is provided.
  • the first ferrite 98 can be disposed up to the vicinity of the magnetic tube F2, and leakage of magnetic force can be reduced.
  • the second lid screwing portion 71f is provided for screwing the first ferrite case 71 and the second bobbin lid 64, and from the virtual space extending in the radial direction between the two side surfaces 71h, It is provided at a position shifted to the opposite side to the lid screwing portion 71a.
  • the first ferrite 98 can be disposed up to the vicinity of the magnetic tube F2, and leakage of magnetic force can be reduced.
  • the first lid screwing portion 71a and the second lid screwing portion 71f are arranged on one side and the other side with respect to a virtual space sandwiched between the two side surface portions 71h and extending in the radial direction. Therefore, not only the leakage of magnetic force is reduced, but also the first ferrite case 71 and the first bobbin lid 63 and the second bobbin lid 64 are more firmly fixed.
  • the second lid screwing hole 71g screws and fixes the first ferrite case 71 and the second bobbin lid 64 to each other.
  • the screw 69 made of metal is used for the second lid screwing hole 71g of the first ferrite case 71 and the screw 69 of the second bobbin lid 64. It fixes by screwing together with a screw hole (not shown).
  • the shielding cover screwing portion 71c is formed to bulge toward the outer side opposite to the inner side where the side surface portions 71h face each other, and is provided at two locations on the upper side and two locations on the lower side.
  • the shield cover screw holes 71d are openings provided in the shield cover screw portions 71c, and are screwed with screws in a state where the shield cover 75 is attached as shown in FIG. Thereby, the 1st ferrite case 71 and the shielding cover 75 are fixed.
  • the shield cover screw portion 71c and the shield cover screw hole 71d are also provided for the second to fourth ferrite cases 72 to 74, but the shield cover 75 is actually fixed.
  • the first ferrite case 71 and the third ferrite case 73 are provided.
  • the first ferrite 98 and the second ferrite 99 housed in each ferrite case are disposed so as to be in contact with each other at the surface portions.
  • the ferrites 98 and 99 guide the magnetic field by combining two types of shapes of the first ferrite 98 and the second ferrite 99. Costs can be kept low by using ferrites of the same shape in combination as described above, instead of using ferrite integrally molded in a U shape.
  • the first ferrite 98 and the second ferrite 99 housed in each ferrite case are disposed so as to be in contact with each other at the surface portions. (Shielding cover)
  • shielding cover 75 the details of the shielding cover 75 will be described.
  • the shielding cover 75 has an outer edge shape in plan view when the first to fourth ferrite cases 71 to 74 are attached to the first bobbin lid 63 and the second bobbin lid 64.
  • the sheet metal has a substantially octagonal shape and includes a magnetic material.
  • the shielding cover 75 has an overlapping portion 75d in which one end 75a and the other end 75b in the circumferential direction overlap in the plate thickness direction. In this overlapping portion 75d, the surface in the vicinity of the one end 75a and the surface in the vicinity of the other end 75b are welded in a state of being in surface contact with each other from the top to the bottom in the direction in which the accumulator tube F extends.
  • the shielding cover 75 provides access to the coil 68 such as a user's finger.
  • the periphery of the coil 68 is covered so as to refuse.
  • both ends of the coil 68 in the direction in which the accumulator tube F extends are arranged so as to be positioned between both ends of the shielding cover 75, the user can be effectively prevented from accessing the coil 68. is made of.
  • FIG. 19 is a cross-sectional view showing how the magnetic flux is guided with priority over the shielding cover 75 with respect to the ferrites 98 and 99.
  • the ferrites 98 and 99 have higher magnetic permeability than the shielding cover 75 made of sheet metal, and are arranged so as to extend in the radial direction at the upper and lower ends of the coil 68, when viewed from the direction in which the accumulator tube F extends.
  • the magnetic flux that is about to leak is more easily guided to the ferrites 98 and 99 than the shielding cover 75, and the magnetic flux generated by the coil 68 is collected by the ferrites 98 and 99 before being collected by the shielding cover 75. Most of the magnetic flux can be guided to the ferrites 98 and 99. Further, the burden of preventing leakage of the magnetic field applied to the shielding cover 75 can be reduced, and the magnetic field leaking from the electromagnetic induction heating unit 6 can be further reduced.
  • the first ferrite case 71 is made of resin, even if the shielding cover 75 is screwed to the first ferrite case 71 by metal screws 70a and 70b, the first ferrite 98 and The second ferrite 99 and the shielding cover 75 are not in direct contact. As described above, since an arrangement structure is employed in which the first ferrite 98 and the second ferrite 99 do not come into contact with the shielding cover 75, naturally, the first ferrite 98, the second ferrite 99 and the shielding cover 75 are locally disposed. There is no specific contact area.
  • the ferrites of the second to fourth ferrite cases 72 to 74 covered from the outside in the radial direction by the shielding cover 75 at positions other than the gap portion of the shielding cover 75 are the same as the shielding cover 75 containing the magnetic material and the second to fourth ferrite cases.
  • the shielding cover 75 has a portion located near the right side panel 2f of the outdoor unit 2 when viewed from above, while being parallel to the right side panel 2f. It arrange
  • the magnetic flux guided to the shielding cover 75 is further guided to the right side panel 2f, or an eddy current is generated at a local contact portion between the right side panel 2f and the shielding cover 75, resulting in local localization. This prevents the generation of excessive heat.
  • ⁇ Characteristics of the air conditioner 1 of the present embodiment> In the case of electromagnetic induction heating, a magnetic field may be generated not only for the purpose of generating heat but also for the surroundings.
  • the ferrites 98 and 99 containing a magnetic material having a higher magnetic permeability than the shielding cover 75 are disposed outside the coil 68.
  • the ferrites 98 and 99 are arranged so as to extend closer to the coil 68 than 75. For this reason, the magnetic field generated in the portion other than the accumulator tube F passes through the ferrites 98 and 99 preferentially over the shielding cover 75.
  • the magnetic flux which the ferrite 98 and 99 tends to leak to parts other than the accumulation tube F can be caught efficiently.
  • the magnetic field generated in the portion other than the accumulator tube F can be efficiently passed through the ferrites 98 and 99, and the magnetic flux not collected by the ferrites 98 and 99 is also shielded. Collected by 75. For this reason, the magnetic flux which leaks to parts other than the electromagnetic induction heating unit 6 can be suppressed small.
  • the member to be heated F2a and the two stoppers F1a may be arranged inside the accumulator pipe F or the refrigerant pipe to be heated.
  • the member to be heated F2a is a member that contains a magnetic material and generates heat by electromagnetic induction heating in the above embodiment.
  • the stopper F1a always allows passage of the refrigerant at two locations inside the copper tube F1, but does not allow passage of the heated member F2a. Thereby, the to-be-heated member F2a does not move even if the refrigerant flows. For this reason, the target heating position of the accumulator tube F or the like can be heated.
  • the heated member F2a described in the other embodiment (C) may be positioned with respect to the pipe without using the stopper F1a.
  • the copper pipe F1 may be provided with two bent portions FW, and the heated member F2a may be disposed inside the copper pipe F1 between the two bent portions FW. Even if it does in this way, the movement of the to-be-heated member F2a can be suppressed, allowing a refrigerant to pass through.
  • the coil 68 is spirally wound around the accumulator tube F.
  • the present invention is not limited to this.
  • the coil 168 wound around the bobbin main body 165 may be arranged around the accumulator tube F without being wound around the accumulator tube F.
  • the bobbin main body 165 is disposed so that the axial direction is substantially perpendicular to the axial direction of the accumulator tube F. Further, the bobbin main body 165 and the coil 168 are arranged separately in two so as to sandwich the accumulator tube F.
  • the first bobbin lid 163 and the second bobbin lid 164 passing through the accumulator tube F are disposed in a state of being fitted to the bobbin main body 165.
  • the first bobbin lid 163 and the second bobbin lid 164 may be sandwiched and fixed by the first ferrite case 171 and the second ferrite case 172.
  • the shielding cover 75 may be provided so that the outermost periphery part of the electromagnetic induction heating unit 6 fixed in this way may be covered.
  • the present invention is used, even if the refrigerant pipe is heated by electromagnetic induction, it is possible to suppress leakage of the magnetic field to the surroundings while suppressing local heat generation, so that the refrigerant is heated using electromagnetic induction. It is particularly useful in an electromagnetic induction heating unit and an air conditioner.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Induction Heating (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

La présente invention a trait à une unité de chauffage par induction électromagnétique et à un dispositif de climatisation. Même si le chauffage par induction électromagnétique est effectué en générant un champ magnétique à l’aide d’une unité de chauffage par induction électromagnétique, la fuite de champ magnétique vers l’extérieur du serpentin de réfrigération peut être réduite. Une unité de chauffage par induction électromagnétique (6) permettant de chauffer par induction électromagnétique un serpentin de réfrigération (F) est constituée d’une bobine (68), d’un couvercle de blindage (75), et de ferrites (98, 99). La bobine (68) est disposée à proximité du serpentin de réfrigération (F). Le couvercle de blindage (75) est agencé autour du serpentin de réfrigération (F) et contient une substance magnétique. Les ferrites (98, 99) sont disposées sur le côté extérieur de la bobine (68), qui est situé à l’opposé du côté intérieur de la bobine (68) adjacent au serpentin de réfrigération (F), et sur le côté intérieur du couvercle de blindage (75), et contiennent une substance magnétique dotée d’une perméabilité magnétique supérieure à celle du couvercle de blindage (75). Dans une direction dans laquelle le serpentin de réfrigération (F) s’étend, les extrémités opposées du couvercle de blindage (75) sont disposée à un emplacement qui se trouve davantage à l’intérieur par rapport aux extrémités opposées des ferrites (98, 99).
PCT/JP2009/007240 2009-01-07 2009-12-25 Unité de chauffage par induction électromagnétique et dispositif de climatisation WO2010079570A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2009801490965A CN102227951A (zh) 2009-01-07 2009-12-25 电磁感应加热单元及空调装置
JP2010545640A JP5267572B2 (ja) 2009-01-07 2009-12-25 電磁誘導加熱ユニットおよび空気調和装置
EP09837460A EP2381740A1 (fr) 2009-01-07 2009-12-25 Unité de chauffage par induction électromagnétique et dispositif de climatisation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-001931 2009-01-07
JP2009001931 2009-01-07

Publications (1)

Publication Number Publication Date
WO2010079570A1 true WO2010079570A1 (fr) 2010-07-15

Family

ID=42316348

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/007240 WO2010079570A1 (fr) 2009-01-07 2009-12-25 Unité de chauffage par induction électromagnétique et dispositif de climatisation

Country Status (4)

Country Link
EP (1) EP2381740A1 (fr)
JP (1) JP5267572B2 (fr)
CN (1) CN102227951A (fr)
WO (1) WO2010079570A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023033125A1 (fr) * 2021-09-03 2023-03-09 日本碍子株式会社 Unité de bobine de chauffage par induction et dispositif de chauffage par induction

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2988973A1 (fr) * 2012-03-27 2013-10-04 Jean Serge Yves Herskovits Dispositif pour produire de la chaleur par induction electromagnetique
CN107053642A (zh) * 2017-05-27 2017-08-18 深圳市鑫多达科技有限公司 制造曲面膜的热弯机
JP6766128B2 (ja) * 2017-12-22 2020-10-07 深▲せん▼市合元科技有限公司Ｓｈｅｎｚｈｅｎ Ｆｉｒｓｔ Ｕｎｉｏｎ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ 加熱装置及び喫煙具
US10914503B2 (en) 2018-02-01 2021-02-09 Johnson Controls Technology Company Coil heating systems for heat pump systems
CN109974130B (zh) * 2019-04-08 2024-05-07 广东美的暖通设备有限公司 加热器组件和具有其的空调器室外机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138737A (en) * 1976-05-17 1977-11-19 Tokushu Denki Kk Fluid induction heater
JPS5944300U (ja) * 1982-09-17 1984-03-23 明治製菓株式会社 煮詰装置
JPH0874563A (ja) * 1994-09-07 1996-03-19 Denki Kogyo Co Ltd 排気ガス浄化装置
JPH08210720A (ja) 1995-02-06 1996-08-20 Matsushita Electric Ind Co Ltd 冷媒加熱装置を具備した空気調和機
JP2001174055A (ja) * 1999-12-14 2001-06-29 Daikin Ind Ltd 誘導加熱装置
JP2008202922A (ja) * 2007-02-23 2008-09-04 Sharp Corp 流体昇温装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101275780A (zh) * 2007-12-15 2008-10-01 廖智 管形高频电磁感应加热式热水器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138737A (en) * 1976-05-17 1977-11-19 Tokushu Denki Kk Fluid induction heater
JPS5944300U (ja) * 1982-09-17 1984-03-23 明治製菓株式会社 煮詰装置
JPH0874563A (ja) * 1994-09-07 1996-03-19 Denki Kogyo Co Ltd 排気ガス浄化装置
JPH08210720A (ja) 1995-02-06 1996-08-20 Matsushita Electric Ind Co Ltd 冷媒加熱装置を具備した空気調和機
JP2001174055A (ja) * 1999-12-14 2001-06-29 Daikin Ind Ltd 誘導加熱装置
JP2008202922A (ja) * 2007-02-23 2008-09-04 Sharp Corp 流体昇温装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023033125A1 (fr) * 2021-09-03 2023-03-09 日本碍子株式会社 Unité de bobine de chauffage par induction et dispositif de chauffage par induction

Also Published As

Publication number Publication date
JPWO2010079570A1 (ja) 2012-06-21
CN102227951A (zh) 2011-10-26
JP5267572B2 (ja) 2013-08-21
EP2381740A1 (fr) 2011-10-26

Similar Documents

Publication Publication Date Title
JP5131352B2 (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP5267572B2 (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP5168357B2 (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP4826643B2 (ja) 空気調和装置
JP5370474B2 (ja) 空気調和装置
CN102348941B (zh) 空调装置
JP5353250B2 (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP2011002190A (ja) 冷凍装置
JP2010071537A (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP2010071532A (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP2010153202A (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP2010071535A (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP2010073447A (ja) 電磁誘導加熱ユニットおよび空気調和装置
JP2010071533A (ja) 電磁誘導加熱ユニットおよび空気調和装置
WO2010146803A1 (fr) Dispositif de réfrigération
JP5347400B2 (ja) 電磁誘導加熱ユニットおよび空気調和装置
WO2010146809A1 (fr) Dispositif de réfrigération
JP2001091065A (ja) 冷媒加熱装置
WO2010106803A1 (fr) Climatiseur
JP2010243149A (ja) 空気調和装置

Legal Events

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

Ref document number: 200980149096.5

Country of ref document: CN

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

Ref document number: 09837460

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2010545640

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2009837460

Country of ref document: EP