WO2013099902A1 - Unité extérieure destinée à un appareil de réfrigération - Google Patents

Unité extérieure destinée à un appareil de réfrigération Download PDF

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Publication number
WO2013099902A1
WO2013099902A1 PCT/JP2012/083572 JP2012083572W WO2013099902A1 WO 2013099902 A1 WO2013099902 A1 WO 2013099902A1 JP 2012083572 W JP2012083572 W JP 2012083572W WO 2013099902 A1 WO2013099902 A1 WO 2013099902A1
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WO
WIPO (PCT)
Prior art keywords
electric wire
temperature sensor
refrigerant
header collecting
outdoor unit
Prior art date
Application number
PCT/JP2012/083572
Other languages
English (en)
Japanese (ja)
Inventor
啓太郎 星加
友洋 升井
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
Publication of WO2013099902A1 publication Critical patent/WO2013099902A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/207—Casings or covers with control knobs; Mounting controlling members or control units therein
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/031—Sensor arrangements
    • F25B2313/0315—Temperature sensors near the outdoor heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/12—Fins with U-shaped slots for laterally inserting conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Definitions

  • the present invention relates to an outdoor unit of a refrigeration apparatus, and more particularly to an outdoor unit of a refrigeration apparatus provided with a heat exchanger.
  • the heat exchanger used in the refrigeration apparatus has header tanks (header collecting pipes) on both sides of the heat exchanger. Provided. And in order to perform heat exchange, a refrigerant
  • the refrigerant pipe is shortened to be compact.
  • a header tank into which refrigerant flows in and out is disposed on the side close to the compressor used in the refrigeration apparatus.
  • a control device for controlling the refrigeration device is generally arranged in a machine room where the compressor is arranged.
  • the temperature of the refrigerant circulating in the heat exchanger is detected by a temperature sensor such as a thermistor.
  • a temperature sensor is attached to the other header tank where the refrigerant makes a U-turn in order to accurately detect the temperature of the refrigerant heat-exchanged by the heat exchanger. It is preferable.
  • the temperature sensor is attached to the other header tank in this way, the distance from the control device arranged near the one header tank to the temperature sensor becomes longer, and the wiring of the temperature sensor takes time and labor is required. This is one of the factors that increase the cost of the equipment.
  • the subject of this invention is suppressing the raise of the cost accompanying the attachment of the temperature sensor to a heat exchanger.
  • the outdoor unit of the refrigeration apparatus is arranged in a fan housing having a partition plate that partitions the blower chamber and the machine chamber, and compared to the first header collecting pipe and the first header collecting pipe.
  • the temperature sensor wire can be relayed by the support portion of the motor base, so that it is possible to save time and effort required to route the temperature sensor wire.
  • the outdoor unit of the refrigerating apparatus is the outdoor unit of the refrigerating apparatus according to the first aspect, wherein the heat exchanger is connected between the first header collecting pipe and the second header collecting side surface.
  • a plurality of flat tubes arranged so as to face each other, and a plurality of fins joined to the plurality of flat tubes, and fluid flowing inside the plurality of flat tubes flows outside the plurality of flat tubes
  • the first header collecting pipe and the second header collecting pipe are configured to exchange gas refrigerant or gas-liquid two-layer refrigerant among a plurality of flat tubes when the heat exchanger functions as a condenser.
  • the upper part of the first header collecting pipe It is constituted of the refrigerant of the refrigerant flowing into the lower interior space once folded in the second header collecting pipe of the first header collecting pipe from the space so as to reciprocate once.
  • the outdoor unit of the refrigeration apparatus according to the third aspect of the present invention is the outdoor unit of the refrigeration apparatus according to the first aspect or the second aspect, and the motor base is configured by a hole having a support portion opened in the motor base.
  • the outdoor unit of the refrigeration apparatus according to the third aspect it is easy to process the holes simultaneously with the processing of the motor base, and the labor for providing the support portion can be saved.
  • the outdoor unit of the refrigeration apparatus according to the fourth aspect of the present invention is the outdoor unit of the refrigeration apparatus according to any one of the first to third aspects.
  • the electric wire is supported on the support portion by the binding band.
  • the attachment work of the electric wire to the motor base is facilitated.
  • the outdoor unit of the refrigeration apparatus according to the fifth aspect of the present invention is the outdoor unit of the refrigeration apparatus according to any one of the first to fourth aspects, and the motor base has a fixing member that fixes the top of the heat exchanger.
  • the support portion is formed on the fixed member, and the temperature sensor has the electric wire routed in a space above the blades of the outdoor fan.
  • the temperature sensor since the temperature sensor can be attached and the electric wire can be routed after the outdoor fan is attached, it is not necessary to remove the outdoor fan or the like for replacement or inspection of the temperature sensor. Saves labor for sensor replacement and inspection.
  • the outdoor unit of the refrigeration apparatus according to the sixth aspect of the present invention is the outdoor unit of the refrigeration apparatus according to the fifth aspect, wherein the temperature sensor detects the temperature of the refrigerant in the vicinity of the upper end of the second header collecting pipe. Is attached in position.
  • the refrigerant in the vicinity of the upper end of the second header collecting pipe can be stably measured in the gaseous state, so that the refrigerant temperature can be accurately measured.
  • the outdoor unit of the refrigeration apparatus according to the seventh aspect of the present invention is the outdoor unit of the refrigeration apparatus according to the sixth aspect, wherein the temperature sensor is configured such that the electric wire is hooked in the vicinity of the upper end portion of the partition plate and the electric wire is detached from the support portion.
  • the length is set so that it does not reach the blades of the outdoor fan.
  • the electric wire can be prevented from being damaged by the blades of the outdoor fan because it does not reach the blades of the outdoor fan even if the wires are detached from the support portion.
  • the outdoor unit of the refrigeration apparatus according to the eighth aspect of the present invention is the outdoor unit of the refrigeration apparatus according to any one of the first to seventh aspects, and the casing has a top plate for covering the blower room and the machine room. Furthermore, the temperature sensor has an electric wire routed around the top plate. In the outdoor unit of the refrigeration apparatus according to the eighth aspect, since the electric wire is also routed around the top plate, it becomes difficult for the electric wire to come into contact with the outdoor fan or the heat exchanger, and the electric wire is difficult to be damaged.
  • the outdoor unit of the refrigeration apparatus according to the ninth aspect of the present invention is the outdoor unit of the refrigeration apparatus according to any one of the first to fourth aspects.
  • the motor base has a support portion formed below the blades of the outdoor fan.
  • the electric wire is routed in a space below the blades of the outdoor fan.
  • the electric wire can be routed so as not to hit the blade of the outdoor fan. It is possible to prevent the temperature sensor from being damaged by the outdoor fan without being damaged.
  • the outdoor unit of the refrigeration apparatus it is possible to save time and labor associated with the wiring of the temperature sensor, and to suppress an increase in work cost associated with the attachment of the temperature sensor.
  • the temperature sensor can be easily attached, and at the same time, the performance of the refrigeration apparatus can be improved.
  • an increase in cost for providing the support portion can be suppressed.
  • the labor of replacing the temperature sensor and the inspection work can be saved and the maintenance can be easily performed.
  • the outdoor unit of the refrigeration apparatus it is possible to improve the performance of the refrigeration apparatus and improve the ease of handling of the temperature sensor.
  • the outdoor fan prevents a problem from occurring in the temperature sensor wire.
  • the outdoor fan and the heat exchanger are less likely to cause a failure in the temperature sensor wire.
  • the outdoor fan is less likely to cause a failure in the temperature sensor wire.
  • summary of a structure of the air conditioning apparatus which concerns on one Embodiment.
  • the perspective view which shows the external appearance of an outdoor unit.
  • the typical top view which shows the outdoor unit of the state which removed the top plate.
  • the typical rear view which shows schematic structure of an outdoor heat exchanger.
  • the expanded sectional view for demonstrating the structure of the heat exchange part of an outdoor heat exchanger.
  • (b) is a top view of a bracket
  • (c) is a front view of a bracket
  • the partial expansion perspective view of the outdoor unit which removed the top plate, the fan room side board, the fan room side front board, and the machine room side front board.
  • FIG. 1 is a circuit diagram showing an outline of an air conditioner.
  • the air conditioner 1 includes an outdoor unit 2 and an indoor unit 3.
  • This air conditioner 1 is an apparatus used for air conditioning of each room in a building by performing a vapor compression refrigeration cycle operation.
  • the air conditioner 1 includes an outdoor unit 2 as a heat source unit, an indoor unit 3 as a utilization unit, and refrigerant communication tubes 6 and 7 that connect the outdoor unit 2 and the indoor unit 3.
  • the refrigeration apparatus includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an expansion valve. 14, the indoor heat exchanger 4 and the accumulator 15 are connected by refrigerant piping.
  • a refrigerant is sealed in the refrigeration apparatus, and a refrigeration cycle operation is performed in which the refrigerant is compressed, cooled, decompressed, heated and evaporated, and then compressed again.
  • the liquid refrigerant side closing valve 17 and the gas refrigerant side closing valve 18 of the outdoor unit 2 connected to the refrigerant communication pipes 6 and 7 are opened.
  • the four-way switching valve 12 is in the state indicated by the solid line in FIG. 1, that is, the discharge side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13 and the suction side of the compressor 11 is the accumulator 15.
  • the gas refrigerant side closing valve 18 and the refrigerant communication pipe 7 are connected to the gas side of the indoor heat exchanger 4.
  • the air conditioner 1 uses the outdoor heat exchanger 13 as a refrigerant condenser compressed in the compressor 11 and the indoor heat exchanger 4 as a refrigerant evaporator condensed in the outdoor heat exchanger 13.
  • the four-way switching valve 12 is in the state indicated by the broken line in FIG.
  • the air conditioner 1 uses the indoor heat exchanger 4 as a refrigerant condenser compressed in the compressor 11 and the outdoor heat exchanger 13 as a refrigerant evaporator condensed in the indoor heat exchanger 4. To function as.
  • the control of the refrigeration apparatus is performed by detecting the temperature and pressure of the refrigerant in various places of the refrigeration apparatus.
  • the outdoor heat exchanger 13 is provided with a temperature sensor 50 for detecting the temperature of the refrigerant flowing inside the outdoor heat exchanger 13.
  • the temperature sensor 50 is connected to the control unit 100 by an electric wire 53.
  • the compressor 11, the four-way switching valve 12, the expansion valve 14, the outdoor fan 16 and the like are connected to the control unit 100.
  • (2) Detailed Configuration of Air Conditioner (2-1) Indoor Unit The indoor unit 3 is installed on the wall surface of the room by wall hanging or the like, or embedded or suspended on the ceiling of a room such as a building.
  • the indoor unit 3 has an indoor heat exchanger 4 and an indoor fan 5.
  • the indoor heat exchanger 4 is, for example, a cross fin type fin-and-tube heat exchanger composed of heat transfer tubes and a large number of fins, and functions as a refrigerant evaporator during cooling operation to cool indoor air. In the heating operation, the heat exchanger functions as a refrigerant condenser and heats indoor air.
  • the outdoor unit 2 is installed outside a building or the like, and is connected to the indoor unit 3 installed indoors via the refrigerant communication pipes 6 and 7.
  • the outdoor unit 2 includes a substantially rectangular parallelepiped unit casing 20.
  • the outdoor unit 2 has a structure in which a blower chamber S ⁇ b> 1 and a machine chamber S ⁇ b> 2 are formed by dividing the internal space of the unit casing 20 into two by a partition plate 28 extending in the vertical direction ( So-called trunk type structure).
  • an outdoor heat exchanger 13 and an outdoor fan 16 are disposed in the blower room S1.
  • the compressor 11, the accumulator 15, the electrical component box 19 shown in FIG. 3, the four-way switching valve 12, the expansion valve 14 and the liquid refrigerant side which are not shown in FIG. A closing valve 17 and a gas refrigerant side closing valve 18 are arranged.
  • the unit casing 20 includes a top plate 21, a bottom plate 22, a blower chamber side plate 23, a machine chamber side plate 24, a blower chamber side front plate 25, and a machine chamber side front plate 26.
  • the top plate 21 is a plate-shaped member made of a steel plate that constitutes the top surface portion of the unit casing 20.
  • the bottom plate 22 is a plate-shaped member made of a steel plate that constitutes the bottom portion of the unit casing 20.
  • the blower chamber side plate 23 is a plate-shaped member made of a steel plate that forms a side surface portion of the unit casing 20 near the blower chamber S1.
  • the machine room side plate 24 is a plate-shaped member made of steel plate that constitutes a part of a side surface portion of the unit casing 20 near the machine room S2 and a back surface portion of the unit casing 20 near the machine room S2.
  • the blower chamber side front plate 25 is a plate-like member made of steel plate that constitutes the front portion of the blower chamber S1 of the unit casing 20 and a part of the front portion of the machine chamber S2 of the unit casing 20.
  • the machine room side front plate 26 is a plate-shaped member made of steel plate that constitutes a part of the front surface part and a part of the side surface part of the machine room S2 of the unit casing 20.
  • the blower chamber side front plate 25 and the blower chamber side plate 23 may be formed integrally by press-molding a single steel plate.
  • the outdoor unit 2 is configured to suck outdoor air into the blower chamber S ⁇ b> 1 in the unit casing 20 from a part of the back surface and side surface of the unit casing 20 and blow out the sucked outdoor air from the front surface of the unit casing 20. Therefore, the outdoor air suction port 20a sucked into the blower chamber S1 in the unit casing 20 is between the rear end portion of the blower chamber side plate 23 and the end portion of the machine chamber side plate 24 on the blower chamber S1 side.
  • the outdoor air inlet 20b is formed in the blower chamber side plate 23. Further, a blower chamber side front plate 25 is provided with an outlet 20c for blowing the outdoor air sucked into the blower chamber S1 to the outside.
  • the front side of the air outlet 20c is covered with a fan grill 25a.
  • a bell mouth 25b is formed at the air outlet 20c in order to efficiently blow out air.
  • the outdoor heat exchanger 13 is arranged in a vertical direction (vertical direction) in the blower chamber S1 which is a space covered by the blower chamber side plate 23, the blower chamber side front plate 25, the partition plate 28, and a part of the machine room side plate 24. It is placed upright.
  • the outdoor heat exchanger 13 has an L shape in plan view and faces the suction ports 20a and 20b.
  • the outdoor heat exchanger 13 is an aluminum heat exchanger.
  • the aluminum outdoor heat exchanger 13 includes a steel plate top plate 21, a bottom plate 22, a blower chamber side plate 23, a machine chamber side plate 24, and a partition plate by means of an aluminum bracket described later. It is attached to the unit casing 20 so as not to come into direct contact with 28 or the like.
  • the outdoor fan 16 blows air by rotating the blades 16a by a fan motor 16b.
  • the blades 16a are directly attached to the fan motor 16b.
  • a fan motor 16 b of the outdoor fan 16 is supported by a fan motor base 60 at a substantially central portion in the vertical direction of the unit casing 20.
  • the fan motor base 60 is configured to fix the upper end portion of the outdoor heat exchanger 13 by the upper mounting bracket 61 at the same time as fixing the fan motor 16b.
  • the upper mounting bracket 61 of the fan motor base 60 is fixed to the top plate 21 with screws.
  • the aluminum heat exchanger includes an aluminum heat transfer fin 32, an aluminum flat multi-hole pipe 33, and aluminum header collecting pipes 34 and 35.
  • the outdoor heat exchanger 13 includes a heat exchanging portion 31 that exchanges heat between the outdoor air and the refrigerant.
  • the heat exchanging portion 31 includes a large number of aluminum heat transfer fins 32 and a large number of flat aluminum plates. It consists of a hole tube 33.
  • a gas refrigerant flat multi-hole tube 33a for flowing a gas refrigerant or a gas-liquid two-layer refrigerant out of the many flat multi-hole tubes 33 is disposed.
  • the flat multi-hole tube 33 functions as a heat transfer tube, and exchanges heat moving between the heat transfer fins 32 and the outdoor air between the refrigerant flowing inside and the heat transfer fins 32.
  • the outdoor heat exchanger 13 includes aluminum header collecting pipes 34 and 35, one on each end of the heat exchanging section 31.
  • the header collecting pipe 34 has an aluminum cylindrical pipe structure, and has internal spaces 34a and 34b partitioned from each other by an aluminum baffle 34c.
  • An aluminum heat exchanger side gas pipe 38 is connected to the upper internal space 34a, and an aluminum heat exchanger side liquid pipe 39 is connected to the lower internal space 34b.
  • the header collecting pipe 35 has an aluminum cylindrical pipe structure, and is partitioned by aluminum baffles 35f, 35g, 35h, and 35i to form internal spaces 35a, 35b, 35c, 35d, and 35e.
  • a number of flat multi-hole pipes 33a for gas refrigerant connected to the internal space 34a above the header collecting pipe 34 are connected to the three internal spaces 35a, 35b, 35c of the header collecting pipe 35.
  • a number of flat multi-hole pipes 33 b for liquid refrigerant connected to the internal space 34 b below the header collecting pipe 34 are connected to the three internal spaces 35 c, 35 d, and 35 e of the header collecting pipe 35.
  • the internal space 35a and the internal space 35e of the header collecting pipe 35 are connected by an aluminum connecting pipe 36, and the internal space 35b and the internal space 35d are connected by an aluminum connecting pipe 37.
  • the internal space 35c also has a function of connecting a part of the upper internal space (part connected to the internal space 34a) and a part of the lower internal space (part connected to the internal space 34b) of the heat exchange unit 31. Plays. With these configurations, for example, during cooling operation (when functioning as a condenser), the gas refrigerant supplied to the internal space 35a above the header collecting pipe 35 by the heat exchanger-side gas pipe 38 made of aluminum is subjected to heat exchange.
  • Heat exchange is performed at the upper part of the part 31, and a part is liquefied to form a gas-liquid two-layer state, folded back at the header collecting pipe 35, and the remaining gas refrigerant is liquefied through the lower part of the heat exchange part 31 to form aluminum. It goes out from the heat exchanger side liquid pipe 39 made of the product.
  • the temperature sensor 50 is attached around an internal space 35a that is an upper internal space of the header collecting pipe 35 where the refrigerant flow is turned back.
  • the attachment positions are preferably the internal spaces 35a and 35b rather than the internal space 35c in which the upper internal space and the lower internal space are connected and integrated.
  • the temperature sensor 50 is preferably attached to the vicinity of the upper end portion of the inner spaces 35a and 35b because the gas refrigerant is accumulated on the upper side and the liquid refrigerant is accumulated on the lower side.
  • FIG. 6 is a partially enlarged view showing a cross-sectional structure when cut along a plane perpendicular to the longitudinal direction of the flat multi-hole tube 33 of the heat exchange section 31 of the outdoor heat exchanger 13.
  • the heat transfer fins 32 are thin aluminum flat plates, and each heat transfer fin 32 has a plurality of cutouts 32a extending in the horizontal direction.
  • the flat multi-hole tube 33 has upper and lower flat portions serving as heat transfer surfaces and a plurality of internal flow paths 331 through which the refrigerant flows.
  • the flat multi-hole tubes 33 that are slightly thicker than the upper and lower widths of the notches 32a are spaced apart in a state in which the flat surface portion is directed up and down (arranged so that the side surfaces of the flat multi-hole tubes 33 face each other).
  • each flat multi-hole pipe 33 are fitted into the header collecting pipes 34 and 35 and brazed.
  • FIG. 7 shows a temperature sensor 50
  • FIG. 7 (a) is a perspective view showing the appearance of the temperature sensor
  • FIG. 7 (b) shows the configuration of the temperature sensor. It is a typical sectional view showing an outline.
  • the temperature sensor 50 mainly includes a temperature sensing element 51 such as a thermistor, a lead wire 52, an electric wire 53 such as a harness, an aluminum case 54, and a mold resin 55.
  • a lead wire 52 is connected to the temperature sensing element 51, and a signal to be converted according to temperature is transmitted to the lead wire 52.
  • the lead wire 52 is connected to the electric wire 53, and a signal corresponding to the temperature is transmitted to the control unit 100 of the outdoor unit 2 through the electric wire 53.
  • the temperature sensitive element 51, the lead wire 52, and the electric wire 53 are enclosed in a cylindrical aluminum case 54 with a mold resin 55 such as epoxy.
  • FIG. 8 is an enlarged side view of the blower chamber side plate 23.
  • a screw hole 23a is formed on the front side of the suction port 20b of the blower chamber side plate 23 made of steel plate.
  • the aluminum bracket 40 is fixed by an iron male screw 49 or the like (see FIG. 11) screwed into the screw holes 23a.
  • the bracket made from aluminum is also fixed to the screw hole 23b.
  • the aluminum header collecting pipe 35 brazed to the aluminum bracket 40 or the like is fixed to the blower chamber side plate 23 by screwing the bracket 40 or the like to the blower chamber side plate 23.
  • FIG. 9 shows an aluminum bracket 40 for attaching the outdoor heat exchanger 13 to the blower chamber side plate 23.
  • 9A is a perspective view of the bracket 40 made of aluminum
  • FIG. 9B is a plan view of the bracket 40
  • FIG. 9C is a front view of the bracket 40
  • FIG. FIG. 4 is a side view of the bracket 40.
  • the bracket 40 is formed, for example, by pressing a single aluminum plate.
  • Two clamp j base pieces 42 attached to the header collecting pipe 35 of the outdoor heat exchanger 13 extend from the main body 41 of the bracket 40.
  • the sandwiching j base piece 42 is formed in an arc shape along the outer periphery of the cylindrical header collecting pipe 35.
  • Two attachment pieces 43 extend on the side of the bracket 40 opposite to the sandwiching j base piece 42.
  • the attachment piece 43 is provided with a through hole 43a for allowing a screw to pass when attaching to the blower chamber side plate 23 or the like.
  • the through hole 43a is an oblong hole of m1 ⁇ n1.
  • the fitting portion 43 is provided with a fitted portion 43 b formed by cutting out a part of the upper side end portion.
  • the main body portion 41 is provided with a sensor holding portion 44 formed in a concave shape. It can be seen that the shape of the sensor holding portion 44 is formed with a cylindrical hole 44a and a slit 44b.
  • the slit 44 b formed on the side facing the header collecting pipe 35 is for bringing the temperature sensor 50 held by the sensor holding portion 44 into contact with the header collecting pipe 35.
  • Brazing of the bracket 40 to the header collecting pipe 35 is performed, for example, by previously forming a brazing material on the surface of the header collecting pipe 35 and temporarily fixing the bracket 40 to the aluminum heat transfer fin 32 or aluminum.
  • the flat multi-hole tube 33 is assembled in a furnace as shown in FIG. 5 and FIG.
  • the bracket 40 is attached around the inner space 35a shown in FIG.
  • the inner dimension of the cylindrical hole formed by the sensor holding portion 44 of the bracket 40 and the header collecting pipe 35 is formed to be slightly smaller than the outer dimension of the case 54 of the temperature sensor 50. In such a case, the case 54 is slightly deformed by strongly pushing the temperature sensor 50 into the case 54, and the temperature sensor 50 is fixed in a cylindrical hole formed by the sensor holding portion 44.
  • the bracket 40 is made of aluminum. Therefore, when the bracket 40 is brought into direct contact with the blower chamber side plate 23 made of a steel plate, it is a metal having a different ionization tendency. Corrosion of the bracket 40 is promoted due to the contact between iron and aluminum. Therefore, as shown in FIG. 11, a resin cover 47 is attached to the bracket 40, and the resin cover 47 is interposed between the blower chamber side plate 23 and the bracket 40. An iron mounting plate 48 is arranged inside the resin cover 47 in a state separated from the bracket 40 by the resin cover 47.
  • the mounting plate 48 is formed with a screw hole 48 a into which a male male screw 49 penetrating the through hole 43 a of the bracket 40 and the opening 47 a of the resin cover 47 is fitted.
  • a resin windproof plate 70 is attached inside the blower chamber S ⁇ b> 1 rather than the bracket 40. Since wind does not strike the sensor holding portion 44 of the bracket 40 by the windbreak plate 70, the accuracy of temperature detection by the temperature sensor 50 is improved.
  • the wind-proof board 70 can also be formed, for example with a sheet metal, and the material which comprises the wind-proof board 70 is not ask
  • the electric wire 53 drawn into the blower chamber S1 is attached to the upper mounting bracket 61 by a binding band 80 such as Tie Wrap (registered trademark) or Insulok (registered trademark).
  • a binding band 80 such as Tie Wrap (registered trademark) or Insulok (registered trademark).
  • the electric wire 53 is bound to the mount member 81 by the binding band 80, and the mount member 81 is fixed to the upper mounting bracket 61 by the tapping screw 82.
  • the attachment of the electric wire 53 to the upper attachment fitting 61 by the binding band 80 is not limited to such a method.
  • the electric wires 53 may be directly bound to the upper mounting bracket 61 by the binding band 80.
  • the mount member 81 is not necessary, and an opening for binding the binding band to the upper mounting bracket may be formed.
  • the tapping screw 82 can be omitted by being tied directly to the mount member that fits into the upper mounting bracket 61. In this case, for example, an opening in which the mount member is fitted is formed in the upper mounting bracket.
  • FIG. 14 and 15 show an upper mounting bracket 61 made of aluminum.
  • 14A is a plan view of the upper mounting bracket 61
  • FIG. 14B is a side view of the upper mounting bracket 61
  • FIG. 15A is a front view of the upper mounting bracket 61.
  • FIG. 6B is a rear view of the upper mounting bracket 61.
  • the upper mounting bracket 61 includes an upper surface 61a, a front side surface 61b, a rear side surface 61c, mounting surfaces 61d1 and 61d2, and support surfaces 61e1 and 61e2.
  • a screw hole 62a for attaching the mount member 81 is formed in the front side surface 61b.
  • Screw holes 62b for fixing to the top plate 21 are formed in the back side surface 61c, and burring processing is given to these screw holes 62b.
  • screw holes 62c1 and 62c2 for fixing the upper mounting bracket 61 to the leg portion 65 of the fan motor base 60 are formed in the mounting surfaces 61d1 and 61d2.
  • the support surface 61e2 directly contacts the upper back side of the outdoor heat exchanger 13 and supports the back side of the outdoor heat exchanger 13.
  • the electric wire 53 relayed by the fan motor base 60 is drawn into the machine room S ⁇ b> 2 from the opening 28 a at the top of the partition plate 28 and connected to the control unit 100 inside the electrical component box 19.
  • a rubber bush 85 is fitted into the opening 28 a of the partition plate 28 so as not to damage the electric wire 53.
  • the vicinity of the end of the opening 28a may be bent so that a smooth surface is in contact with the electric wire 53 and the electric wire 53 does not contact the end of the opening 28a.
  • the electric wire 53 contacts the blade 16a of the outdoor fan 16, the electric wire 53 may be damaged.
  • FIG. 16 is a diagram for explaining the relationship between the length of the electric wire 53 and the distance to the blade 16a.
  • FIG. 16A is a front view of the outdoor unit 2
  • FIG. 16B is a plan view of the outdoor unit 2.
  • the length of the electric wire 53 from the opening 71 of the windbreak plate 70 to the upper mounting bracket 61 is r1
  • the length of the electric wire 53 from the upper mounting bracket 61 to the partition plate 28 is r2.
  • the distance from the opening 71 of the windbreak plate 70 to the top of the trajectory of the blade 16a is r3, and the distance from the top of the trajectory of the blade 16a to the partition plate 28 is r4.
  • the length of the electric wire 53 from the opening 71 of the windbreak plate 70 to the partition plate 28 via the upper mounting bracket 61 passes through the top of the locus of the blade 16a from the opening 71 of the windbreak plate 70. Since it is shorter than the distance to the partition plate 28, even if the electric wire 53 hangs down, the electric wire 53 does not reach the blades 16a.
  • the outdoor heat exchanger 13 disposed in the blower chamber S1 includes a header collecting pipe 34 (first header collecting pipe) disposed on the side close to the machine room S2, and a header collecting pipe 34.
  • the header collecting pipe 35 (second header collecting pipe) is disposed far from the machine room S2.
  • the temperature sensing element 51 of the temperature sensor 50 is attached to the header collecting pipe 35 so as to be in thermal contact via the case 54 and the mold resin 55. And from the temperature sensing element 51, the electric wire 53 of the temperature sensor 50 is extended to machine room S2.
  • the electric wire 53 of the temperature sensor 50 is supported by being attached to the screw hole 62 (support portion) of the upper mounting bracket 61 of the fan motor base 60 (motor base) by a binding band 80, a mount member 81, and a tapping screw 82. .
  • the electric wire 53 of the temperature sensor 50 can be relayed using the screw hole 62 of the fan motor base 60, it is possible to save time and labor required for routing the electric wire 53 of the temperature sensor 50, and work associated with the installation of the temperature sensor 50. An increase in cost can be suppressed.
  • the electric wire 53 is supported by the screw hole 62 using the binding band 80, it is easy to perform the operation of attaching the electric wire 53 to the fan motor base 60, and the time and labor of manufacturing and maintenance can be saved.
  • the screw hole 62 (hole formed in the motor base) of the upper mounting bracket 61 for supporting the electric wire 53 of the temperature sensor 50 can be processed simultaneously with the pressing of the upper mounting bracket 61 of the fan motor base 60.
  • the temperature sensor 50 has the electric wire 53 routed in a space above the blades 16a of the outdoor fan 16. If the electric wire 53 is routed in this way, the temperature sensor 50 and the electric wire 53 can be routed after the outdoor fan 16 is attached. Accordingly, it is not necessary to remove the outdoor fan 16 or the like for replacement or inspection of the temperature sensor 50, and it is possible to save time and labor for replacement or inspection of the temperature sensor 50, thereby facilitating maintenance.
  • the electric wire 53 is hooked on the opening 28 a in the vicinity of the upper end of the partition plate 28 by a bush 85 or the like.
  • the binding band 80 that holds the electric wire 53 is removed, and the electric wire 53 is set to a length that does not reach the blades 16 a of the outdoor fan 16 even if the electric wire 53 is removed from the screw hole 62. Yes.
  • the electric wire 53 removed from the screw hole 62 does not reach the blade 16a of the outdoor fan 16 and does not hit the electric wire 53, it is possible to prevent the electric wire 53 from being damaged by the blade 16a. The occurrence of problems in the electric wire 53 is prevented.
  • the outdoor heat exchanger 13 is connected to a plurality of flat multi-hole pipes 33 (flat pipes) connected between the header collecting pipes 34 and 35 and arranged to face each other, and a plurality of flat multi-hole pipes 33.
  • the outdoor heat exchanger 13 is configured such that the refrigerant (fluid) flowing inside the plurality of flat multi-hole tubes 33 exchanges heat with the air flowing outside the plurality of flat multi-hole tubes 33.
  • the header collecting pipes 34 and 35 are a gas refrigerant flat multi-hole pipe 33a (a gas refrigerant flat pipe for flowing gas refrigerant or gas-liquid two-layer refrigerant when the outdoor heat exchanger 13 functions as a condenser). ) Are connected to the internal space 34a, 35a, 35b (upper internal space) and the liquid refrigerant flat multi-hole tube 33b (liquid refrigerant flat tube) for flowing a gas-liquid two-layer refrigerant or liquid refrigerant. Internal spaces 34b, 35d, and 35e (lower internal spaces).
  • the header collecting pipes 34 and 35 are configured so that the refrigerant flowing from the internal space 34a of the header collecting pipe 34 to the internal space 34b of the header collecting pipe 34 is folded back once by the header collecting pipe 35 and the refrigerant is reciprocated once. ing. Since the refrigerant in the gas-liquid two-layered state when the refrigerant is folded back once flows in the internal spaces 35a and 35b of the header collecting pipe 35 of the refrigerant heat reciprocating outdoor heat exchanger 13, the saturation temperature of the refrigerant is detected. It can be done with high accuracy. Therefore, the temperature sensor 50 can be easily attached, and at the same time, the performance of the refrigeration apparatus can be improved.
  • the temperature sensor 50 is attached at a position where the temperature sensing element 51 detects the temperature of the refrigerant in the vicinity of the upper end of the header collecting pipe 35. Therefore, the gaseous refrigerant can be measured stably, and the refrigerant temperature can be accurately measured. Moreover, it becomes easy to route the electric wire 53 in the space above the blade
  • the support portion that supports the electric wire 53 is not limited to the binding band 80.
  • a part of the front side surface 61b of the upper mounting bracket 61 may be cut to cause the support piece 63 as shown in FIG.
  • An opening 64 through which the electric wire 53 passes is formed in the support piece 63.
  • the electric wire 53 is supported by the support piece 63 when the electric wire 53 passes through the opening 64.
  • the opening 64 of the support piece 63 is configured such that the vicinity of the end 64 a is folded back, the electric wire 53 is in contact with a smooth surface, and the electric wire 53 is not in contact with the end 64 a of the opening 64.
  • the electric wire 53 is supported by the binding band 80, the support piece 63, the windproof plate 70, and the partition plate 28, and the others are suspended so as to pass through the air.
  • the electric wire 53 may be routed so as to pass through, for example, the top plate 21 other than the air.
  • a hook or a spring may be provided on the top plate 21, and the electric wire 53 may be routed using the top plate 21 by being hooked on the hook or spring of the top plate 21.
  • FIG. 18 shows a wiring clamp member 90 for supporting the electric wire 53.
  • FIG. 18A is a front view of the outdoor unit 2
  • FIG. 18B is a side view of the leg portion 65 as viewed from the left side.
  • a slit 91 is formed in the wiring clamp member 90, and the electric wire 53 is passed through the slit 91.
  • the wiring clamp member 90 is made of, for example, resin, and is fixed to the leg portion 65 with a tapping screw 92.
  • the electric wire 53 is formed at the same height as the wiring clamp material 90 through the wiring clamp material 90 from the opening of the windbreak plate 70 formed at the same height as the wiring clamp material 90. It is drawn to the opening of the partition plate 28.
  • the wiring clamp member 90 of the fan motor base 60 is formed below the blades 16 a of the outdoor fan 16.
  • the temperature sensor 50 uses the wiring clamp member 90 so that the electric wire 53 is routed in a space below the blade 16a of the outdoor fan 16, so that the electric wire 53 does not hit the blade 16a. Since the electric wire 53 is not damaged by the blades 16a, it is possible to prevent the outdoor fan 16 from causing a failure in the temperature sensor 50.
  • the outdoor heat exchanger 13 has been described as having an approximately L shape in plan view.
  • the outdoor heat exchanger has an I shape in plan view.
  • the shape of the outdoor heat exchanger is not limited to the shape shown in the above embodiment.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

La présente invention supprime l'augmentation de coût associée à la fixation d'un capteur de température à un échangeur thermique. Un échangeur thermique extérieur (13) positionné dans une chambre de ventilateur (S1) comprend un conduit de collecteur d'embase (34) positionné du côté proche d'une chambre d'équipement (S2), et un conduit de collecteur d'embase (35) positionné plus loin de la chambre d'équipement (S2) comparé au conduit de collecteur d'embase (34). Un élément de détection de température (51) d'un capteur de température (50) est fixé au conduit de collecteur d'embase (35). Un fil électrique (53) du capteur de température (50) s'étend depuis l'élément de détection de température du capteur de température (50) jusqu'à la chambre d'équipement (S2). Le fil électrique (53) du capteur de température (50) est fixé à un trou de vis (62) d'une bague de fixation de section supérieure (61) d'une base de moteur de ventilateur (60) et est supporté par ledit trou de vis.
PCT/JP2012/083572 2011-12-28 2012-12-26 Unité extérieure destinée à un appareil de réfrigération WO2013099902A1 (fr)

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JP2011290086A JP5246325B2 (ja) 2011-12-28 2011-12-28 冷凍装置の室外ユニット
JP2011-290086 2011-12-28

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WO2013099902A1 true WO2013099902A1 (fr) 2013-07-04

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EP3054255A4 (fr) * 2013-09-30 2017-06-07 Daikin Industries, Ltd. Échangeur thermique et climatiseur
EP3361167A1 (fr) * 2017-02-10 2018-08-15 Mitsubishi Heavy Industries Thermal Systems, Ltd. Unité extérieure et procédé d'assemblage de l'unité extérieure
CN110177988A (zh) * 2017-01-24 2019-08-27 三菱电机株式会社 热源侧单元以及制冷循环装置
WO2019214148A1 (fr) * 2018-05-11 2019-11-14 广东美的制冷设备有限公司 Déshumidificateur
CN110914601A (zh) * 2017-07-26 2020-03-24 三菱电机株式会社 空调机的室外机
WO2020095342A1 (fr) * 2018-11-05 2020-05-14 三菱電機株式会社 Unité intérieure pour climatiseur
CN112460787A (zh) * 2020-11-23 2021-03-09 珠海格力电器股份有限公司 底盘部件及空调器

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CN203336731U (zh) * 2013-05-17 2013-12-11 夏普株式会社 空调机的室外机
JP6822547B1 (ja) * 2019-12-11 2021-01-27 ダイキン工業株式会社 熱交換器、空気調和機の室内機および冷凍装置

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EP3054255A4 (fr) * 2013-09-30 2017-06-07 Daikin Industries, Ltd. Échangeur thermique et climatiseur
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CN110177988A (zh) * 2017-01-24 2019-08-27 三菱电机株式会社 热源侧单元以及制冷循环装置
EP3361167A1 (fr) * 2017-02-10 2018-08-15 Mitsubishi Heavy Industries Thermal Systems, Ltd. Unité extérieure et procédé d'assemblage de l'unité extérieure
CN110914601A (zh) * 2017-07-26 2020-03-24 三菱电机株式会社 空调机的室外机
EP3660410A4 (fr) * 2017-07-26 2020-08-26 Mitsubishi Electric Corporation Unité extérieure pour climatiseur
CN110914601B (zh) * 2017-07-26 2021-07-16 三菱电机株式会社 空调机的室外机
WO2019214148A1 (fr) * 2018-05-11 2019-11-14 广东美的制冷设备有限公司 Déshumidificateur
WO2020095342A1 (fr) * 2018-11-05 2020-05-14 三菱電機株式会社 Unité intérieure pour climatiseur
JPWO2020095342A1 (ja) * 2018-11-05 2021-06-03 三菱電機株式会社 空気調和機の室内機
CN112460787A (zh) * 2020-11-23 2021-03-09 珠海格力电器股份有限公司 底盘部件及空调器
CN112460787B (zh) * 2020-11-23 2022-05-27 珠海格力电器股份有限公司 底盘部件及空调器

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