WO2015011952A1 - 室外機及び空気調和装置 - Google Patents

室外機及び空気調和装置 Download PDF

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Publication number
WO2015011952A1
WO2015011952A1 PCT/JP2014/058628 JP2014058628W WO2015011952A1 WO 2015011952 A1 WO2015011952 A1 WO 2015011952A1 JP 2014058628 W JP2014058628 W JP 2014058628W WO 2015011952 A1 WO2015011952 A1 WO 2015011952A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
outdoor unit
sealing
display
unit according
Prior art date
Application number
PCT/JP2014/058628
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
望月　達哉
田邉　義浩
河原　健太
久保野　俊行
寛之 陣内
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to EP14829739.3A priority Critical patent/EP3026374B1/de
Priority to US14/897,692 priority patent/US20160131404A1/en
Priority to SG11201510227UA priority patent/SG11201510227UA/en
Priority to AU2014294470A priority patent/AU2014294470B2/en
Publication of WO2015011952A1 publication Critical patent/WO2015011952A1/ja

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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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
    • 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
    • F24F1/26—Refrigerant piping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements

Definitions

  • the present invention relates to an outdoor unit of an air conditioner using a compressor refrigeration cycle, and more particularly to an outdoor unit and an air conditioner that are intended to improve safety and reliability during installation and service of the air conditioner. Is.
  • hydrochlorofluorocarbon (HCFC) -based R22 refrigerant, hydrofluorocarbon (HFC) -based R410A refrigerant, or the like is often used in air conditioners.
  • HCFC hydrochlorofluorocarbon
  • HFC hydrofluorocarbon
  • R410A refrigerant equipment is currently on the mainstream, and it is considered that there are more R410A refrigerant equipment including existing air conditioners.
  • R32 (difluoromethane) of HFC refrigerant which is a flammable refrigerant, hydrofluoroolefin refrigerant (HFO1234yf, HFO1234ze, etc.), R32,
  • a mixed refrigerant with an HFO system or a natural refrigerant such as R290 (propane) or R600a (isobutane) has attracted attention.
  • R290 refrigerant or HC R290 (propane) refrigerant has attracted attention.
  • R32 refrigerant and R290 refrigerant are characterized in that the global warming potential (hereinafter referred to as GWP) due to atmospheric release is very small compared to R22 refrigerant and R410A refrigerant.
  • GWP global warming potential
  • R32 refrigerant and R290 refrigerant are flammable refrigerants, products with sufficient consideration for safety must be designed.
  • R290 refrigerant has a strong flammability and requires careful handling.
  • the R32 refrigerant is less flammable than the R290 refrigerant and can be designed to be relatively similar to the non-flammable refrigerants of the R22 refrigerant and the R410A refrigerant.
  • the R32 refrigerant is also flammable, a safety design is required. For this reason, when using combustible refrigerant
  • the air conditioner has a compression refrigeration cycle in which a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, a decompressor, and the like are connected by a refrigerant pipe. Therefore, in the case of an air conditioner using a flammable refrigerant such as R32 refrigerant and R290 refrigerant, the refrigerant circuit is charged with the refrigerant when the air conditioner is installed or the air conditioner is serviced. Safety design is especially necessary when working.
  • a “cooling device having an inlet for filling refrigerant into a refrigerant circuit and having a display unit for displaying the type of refrigerant used in the vicinity of the inlet” is disclosed.
  • a “cooling device having an inlet for filling refrigerant into a refrigerant circuit and having a display unit for displaying the type of refrigerant used in the vicinity of the inlet” is disclosed.
  • a “cooling device having an inlet for filling refrigerant into a refrigerant circuit and having a display unit for displaying the type of refrigerant used in the vicinity of the inlet” is disclosed. (For example, refer to Patent Document 1).
  • Patent Document 1 suggests the type of refrigerant to the operator by a warning method of displaying the type of refrigerant to be used in the vicinity of the inlet (service port) filled with the refrigerant.
  • the air conditioner depending on the installation location of the air conditioner, there may be installation work under adverse conditions (for example, the work location is dark or the work posture is too heavy). There is a possibility of mistakes. For this reason, there is a problem that if the refrigerant type is simply displayed as in the technique described in Patent Document 1, there is a lack of certainty to convey the display content to the operator 100%.
  • the existing R22 refrigerant or the air conditioner using R410A does not perform a safety design for the flammable refrigerant. Assuming that flammable refrigerant is accidentally sealed in this existing air conditioner, if the refrigerant leaks during installation or service work, or the refrigerant circuit is lost when using the air conditioner When the refrigerant leaks, the surroundings reach a flammable concentration, and if there is a flammable material, the refrigerant may burn and cause a serious accident.
  • R22 refrigerant or R410A refrigerant is accidentally sealed in an air conditioner using a flammable refrigerant, for example, especially for refrigeration oil
  • an appropriate type of refrigeration oil is selected according to the type of refrigerant. For this reason, the interior of the compressor is worn out, and cooling and heating performance are lowered, so that the reliability is remarkably lowered.
  • wastes such as air conditioners (air conditioners), refrigerators, and televisions that are discharged in large quantities are gathered at recycling centers.
  • the waste is dismantled and sorted by the manual dismantling of the worker, the product is crushed by a crusher, and further, the sorting operation of materials such as iron, copper, aluminum, and plastic is performed by a sorter.
  • the waste when the waste is an air conditioner, an operator also collects the refrigerant sealed in the air conditioner.
  • Plastic has various plastic materials and colors, and is difficult to recycle. However, in recent years, plastic materials can be selected, and many plastic materials are reused.
  • the present invention has been made to solve the above-described problems, and ensures that the type of refrigerant is ensured for workers (workers who perform installation work, workers who perform service work, and workers who perform recycle work). It is an object of the present invention to provide an outdoor unit and an air conditioner that are recognized and have improved safety and reliability.
  • An outdoor unit is an outdoor unit including a refrigerant pipe connection valve provided with a service port for refrigerant charging that is sealed by a hexagon nut for sealing that is removed when charging refrigerant.
  • a refrigerant pipe connection valve provided with a service port for refrigerant charging that is sealed by a hexagon nut for sealing that is removed when charging refrigerant.
  • a configuration in which at least one of the outer diameter, shape, and appearance of the sealing hex nut is different from the sealing hex nut provided in the refrigerant charge service port that uses another type of refrigerant, and At least one of alerting means that requires an operator's operation when removing the sealing hexagon nut is provided.
  • An air conditioner according to the present invention includes the outdoor unit described above and an indoor unit connected to the outdoor unit.
  • the outdoor unit According to the outdoor unit according to the present invention, it is possible to prevent the operator from erroneously enclosing the refrigerant during the refrigerant filling operation, and to improve safety.
  • the outdoor unit according to the present invention includes the above-described outdoor unit, it is possible to suppress deterioration in performance and quality.
  • FIG. 1 is a schematic configuration diagram illustrating an overall configuration of an air-conditioning apparatus A including an outdoor unit 2 according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view showing the configuration of the indoor unit 1.
  • FIG. 3 is an exploded perspective view showing the configuration of the outdoor unit 2.
  • the configuration of the air conditioner A will be described with reference to FIGS.
  • the outdoor unit 2 provides air conditioning to workers (for example, workers who perform installation work of the air conditioner A, workers who perform service work of the air conditioner A, and workers who perform recycling work of the air conditioner A).
  • the type of the refrigerant sealed in the device A is surely recognized.
  • the air conditioner A is applied as a separate type home air conditioner, for example, and has an indoor unit 1 and an outdoor unit 2.
  • the indoor unit 1 fixes the installation plate 21 to, for example, a wall surface on the indoor side with screws 59 or the like, and is fixed so as to be hooked on the installation plate 21 to supply conditioned air to the air-conditioning target space.
  • the outdoor unit 2 installs the support base 51 in a space different from the air-conditioning target space (for example, outdoors), is fixed so as to be placed on the support base 51, and supplies cold or warm heat to the indoor unit 1.
  • the outdoor unit 2 may be installed at a position where a wind path during operation can be secured and the distance from the indoor unit 1 is not so long.
  • the liquid pipe side pipe connection joint 12 and the gas side pipe connection joint 13 are connected to the indoor unit 1.
  • a liquid side pipe connection valve 8 and a gas side pipe connection valve 9 are connected to the outdoor unit 2.
  • the liquid pipe side pipe connection joint 12 of the indoor unit 1 and the liquid side pipe connection valve 8 of the outdoor unit 2 are coupled using an extension pipe (refrigerant pipe) 7 that has been subjected to flare processing.
  • the gas side pipe connection joint 13 of the indoor unit 1 and the gas side pipe connection valve 9 of the outdoor unit 2 are joined together using the extension pipe 7 that has been subjected to flare processing.
  • the elemental device of the indoor unit 1 and the elemental device of the outdoor unit 2 are connected by piping, and a refrigerant circuit is configured.
  • the terminal block 20 of the indoor unit 1 and the terminal block 17 of the outdoor unit 2 are coupled using the VVF cable 22.
  • the liquid side pipe connection valve 8, the gas side pipe connection valve 9, and the terminal block 17 of the outdoor unit 2 are arranged at positions where the work can be performed by removing the pipe decorative cover 10 from the outdoor unit 2. That is, the decorative pipe cover 10 is detachably attached to the side surface of the outdoor unit 2.
  • the indoor unit 1 includes a base 52, an indoor heat exchanger 11, an indoor blower motor 18, a blower fan 19, an electrical component box 53, a housing 54, an openable and detachable front design panel 55, have.
  • the base 52 is fixed to the installation plate 21.
  • the indoor heat exchanger 11, the indoor blower motor 18, the blower fan 19, the electrical component box 53, and the terminal block 20 are mounted.
  • the housing 54 is fixed to the base 52 with screws. That is, the indoor heat exchanger 11, the indoor blower motor 18, the blower fan 19, the electrical component box 53, and the terminal block 20 are covered with the casing 54.
  • the front design panel 55 is attached to the housing 54.
  • the indoor heat exchanger 11 functions as a condenser (heat radiator) during heating operation and as an evaporator during cooling operation.
  • the indoor blower motor 18 and the blower fan 19 are disposed in front of the indoor heat exchanger 11 and send air to the indoor heat exchanger 11.
  • the electrical component box 53 accommodates an indoor drive device 56 for driving the indoor air blow motor 18.
  • the terminal block 20 is for electrically connecting to the outdoor unit 2.
  • a suction port 57 for sucking air in the air-conditioning target space is formed on the upper surface of the housing 54.
  • an air outlet 58 is formed below the front surface of the casing 54 so that the air sucked from the suction port 57 is passed through the indoor heat exchanger 11 for heat exchange, and the conditioned air is blown into the air-conditioning target space. ing.
  • the outdoor unit 2 includes, for example, a variable speed compressor 3 that compresses the refrigerant, a four-way valve 4 that switches the flow of the refrigerant, an outdoor that functions as an evaporator during heating operation, and a condenser (radiator) during cooling operation.
  • a heat exchanger 5, a flow control device 6 (decompressor) for reducing the pressure of the refrigerant, and an outdoor fan motor 15 and an outdoor fan 16 that send air to the outdoor heat exchanger 5 are accommodated.
  • a casing is formed by a panel 62 that constitutes a part of the front surface and the side surface, a top plate 65 that constitutes a top surface, and a side panel 66 that constitutes a part of the side surface.
  • An opening 63 serving as an air passage is formed at a position of the panel 62 facing the outdoor fan 16.
  • a fan guard 64 formed of a wire is attached to the opening 63.
  • the side panel 66 has an opening 68 through which the VVF cable 22 is exposed.
  • the VVF cable 22 exposed from the opening 68 of the side panel 66 is covered with a cable cover 67.
  • the cable cover 67 is further covered with the piping decorative cover 10.
  • the outdoor unit 2 includes a compressor 3, a four-way valve 4, a driving device 14 for driving the outdoor blower motor 15, and a terminal block 17 for electrically connecting the indoor unit 1.
  • the indoor heat exchanger 11 of the indoor unit 1, the compressor 3 of the outdoor unit 2, the four-way valve 4, the outdoor heat exchanger 5, and the flow rate control device 6 are connected by piping to form a refrigerant circuit.
  • the refrigerant flows in the order of the compressor 3, the four-way valve 4, the indoor heat exchanger 11, the flow rate control device 6, and the outdoor heat exchanger 5, and during the cooling operation, the compressor 3, the four-way
  • the refrigerant circuit is configured so that the refrigerant flows in the order of the valve 4, the outdoor heat exchanger 5, the flow rate control device 6, and the indoor heat exchanger 11. Note that only the cooling operation or the heating operation may be performed without providing the four-way valve 4. Further, as a substitute for the four-way valve 4, for example, a plurality of two-way valves or three-way valves may be used so that the refrigerant flow can be switched in the same manner.
  • refrigerant As a refrigerant circulating through the refrigerant circuit of the air conditioner A, there is, for example, R32 refrigerant having flammability.
  • the refrigerant used for the air conditioner A is not limited to the R32 refrigerant.
  • other flammable refrigerants for example, R290 refrigerant
  • natural refrigerants such as carbon dioxide (CO 2 )
  • hydrocarbons such as helium, etc.
  • refrigerants that do not contain chlorine such as R410A
  • alternative refrigerants such as R407C and R404A May be adopted.
  • the installation plate 21 for fixing the indoor unit 1 is fixed to the wall surface on the indoor side with screws 59 or the like.
  • the indoor unit 1 is hooked on the installation plate 21 and fixed.
  • the outdoor unit 2 is installed in a position (for example, a space around the house, a veranda, a roof, a garage, a garden, etc.) where a wind path during operation can be secured and the distance from the indoor unit 1 is not so long.
  • the liquid pipe side pipe connection joint 12 of the indoor unit 1 and the liquid side pipe connection valve 8 of the outdoor unit 2 are connected to the extension pipe 7 subjected to flare processing. Use to combine.
  • the gas side pipe connection joint 13 of the indoor unit 1 and the gas side pipe connection valve 9 of the outdoor unit 2 are joined together using the extension pipe 7 that has been subjected to flare processing.
  • the terminal block 20 of the indoor unit 1 and the terminal block 17 of the outdoor unit 2 are coupled using the VVF cable 22.
  • the decorative pipe cover 10 is attached to the side surface of the outdoor unit 2 so as to cover the liquid side pipe connection valve 8, the gas side pipe connection valve 9, and the terminal block 17 of the outdoor unit 2.
  • the periphery of each of the two extension pipes 7 is covered with a heat insulating material 60.
  • the two extension pipes 7 covered with the heat insulating material 60 are collectively wrapped with the tape 61.
  • FIG. 4 is an enlarged schematic view showing a part of the side surface of the outdoor unit 2 in an enlarged manner.
  • FIG. 5 is an explanatory diagram for explaining a work procedure of refrigerant charging. Based on FIG.4 and FIG.5, the work procedure of a general refrigerant
  • the gas side pipe connection valve 9 has a refrigerant charge service port 23.
  • a charging hose 26 connected to a vacuum pump 25 is connected to the refrigerant charging service port 23.
  • a pressure gauge 27 is connected between the vacuum pump 25 and the refrigerant charge service port 23.
  • the gas side pipe connection valve 9 has a gas pipe side valve rod 30 in addition to the refrigerant charge service port 23.
  • the refrigerant charging service port 23 is provided with a sealing hexagon nut (cap) 24 for sealing the refrigerant charging service port 23.
  • the refrigerant charge service port 23 includes a push pin type valve 33.
  • the gas pipe side valve rod 30 is provided with a valve stem hexagon nut (cap) 28.
  • the gas pipe side valve rod 30 can be operated by a hexagon wrench 29.
  • the liquid side pipe connection valve 8 has a liquid pipe side valve rod 32.
  • a valve stem hex nut (cap) 31 is installed on the liquid pipe side valve stem 32.
  • the liquid pipe side valve rod 32 can be operated by a hexagon wrench 29.
  • the hexagon nut 24 for sealing of the refrigerant charge service port 23 provided in the gas side pipe connection valve 9 is removed, and the charge hose 26 of the vacuum pump 25 is connected to the refrigerant charge service port 23. Connect and evacuate. Using a pressure gauge 27 or the like, confirm that evacuation has been completed.
  • valve stem hexagon nut 28 of the gas side pipe connection valve 9 is removed, the gas pipe side valve stem 30 is operated using the hexagon wrench 29, and the gas side pipe connection valve 9 is opened.
  • the valve stem hex nut 31 is removed, and the liquid pipe side valve stem 32 is operated using the hexagon wrench 29 to open the liquid side pipe connection valve 8.
  • the extension pipe 7 when the extension pipe 7 is long, the amount of refrigerant pre-filled in the outdoor unit 2 at the time of manufacture may be insufficient. In such a case, it is necessary to fill with additional refrigerant. In such a case, the worker performs an additional charge of a necessary amount of the refrigerant sealed in the refrigerant cylinder prepared in advance through the refrigerant charging service port 23. At this time, the operator must be careful not to make a mistake between the type of refrigerant sealed in the air conditioner A and the type of refrigerant sealed in the prepared refrigerant cylinder.
  • the operator can connect the valve stem hex nut 31 of the liquid side pipe connection valve 8, the valve stem hex nut 28 of the gas side pipe connection valve 9, and the sealing hex nut 24 of the refrigerant charge service port 23. Close with a spanner. Finally, the operator fixes the piping decorative cover 10 to the outdoor unit 2. By doing so, the series of work is completed.
  • FIG. 6 is an enlarged schematic view illustrating a part of the side surface of the outdoor unit 2 further enlarged. Based on FIG. 6, the recognition by the operator of the kind of refrigerant
  • the liquid side pipe connection valve 8 and the gas side pipe connection valve 9 are provided on the side surface of the outdoor unit 2.
  • the gas side pipe connection valve 9 is provided with a refrigerant charging service port 23.
  • the operator at the installation site removes the sealing hexagon nut 24 and then attaches the charging hose 26 for charging the refrigerant to the refrigerant charging service port 23.
  • it has the structure which can open the push pin type valve
  • the hexagon nut 24 for sealing used in the R410A refrigerant air conditioner currently used in the mainstream has a 1/2 inch screw specification. Moreover, the hexagon opposite side of the hexagon nut 24 for sealing is 17 mm. However, if the hexagon nut 24 for sealing having such a specification is used, when the type of refrigerant different from the R410A refrigerant is sealed in the installed air conditioner, the operator mistakes the type of refrigerant. Cheap.
  • the sealing hex nut 24 corresponds to the “sealing hex nut provided in another refrigerant charge service port” of the present invention.
  • a hexagonal nut (hereinafter referred to as a sealing hexagonal nut (cap) 34) having an opposite side dimension of 18 mm or more larger than the sealing hexagonal nut 24 currently used in the mainstream. Used).
  • the spanner for the hex nut 24 for sealing normally used by the operator cannot be used. That is, the operator must use a dedicated wrench (tool) for the sealing hex nut (cap) 34. For this reason, at the work stage where the worker removes the hexagon nut 34 for sealing, the worker can recognize that a refrigerant different from the conventional refrigerant is used, and an alerting effect can be expected.
  • the hexagon for sealing can be obtained even if the operator uses the wrong type of refrigerant.
  • the nut 34 is removed, it can be recognized that a refrigerant different from the conventional refrigerant is used. If the configuration is not limited to the opposite-side dimension of the sealing hex nut 34, and at least one of the outer diameter, shape, and appearance of the sealing hex nut 34 is different from the hex nut 24 for sealing, The spanner used (the spanner for the hexagon nut 24 for sealing) cannot be used.
  • a safety design can be constructed without incurring a large cost, particularly when a flammable refrigerant such as an R32 refrigerant or an R290 refrigerant is used.
  • a refrigerant 35 that is further used is provided by providing an indication 35 indicating the type of refrigerant by engraving or sealing on at least one side of the hexagonal columnar portion of the hexagonal nut 34 for sealing. It becomes possible to clearly tell the type of the worker.
  • the example in which the R32 refrigerant is used has been described as an example, but the type of the refrigerant used is not limited to the R32 refrigerant.
  • the effect is great when combustible refrigerants such as R32 refrigerant and R290 refrigerant are used, which are costly for safety design.
  • the opposite side dimension of the sealing hexagon nut 34 is not limited to the exemplified numerical values.
  • the display 35 may describe not only the type of refrigerant but also a mark indicating that it is a flammable refrigerant, initials, and precautions.
  • the marking 35 is more suitable than the printed matter from the viewpoint that it is difficult to disappear even if the display 35 is used for a long time. For example, it is suitable for identifying the type of refrigerant at the time of refrigerant collection at a recycling center.
  • Printed materials are suitable for clarifying the precautions, but marks and initials are suitable when the display space is small or when devices are deployed globally. These may be properly used depending on the application.
  • a refrigerant recovery device is connected to the refrigerant charge service port 23 to recover the refrigerant.
  • a refrigerant cylinder prepared in advance is connected to the refrigerant charging service port 23 to enclose the refrigerant, and the refrigerant filled in the refrigerant cylinder is enclosed in the device.
  • the type of refrigerant differs from that of the conventional refrigerant at the stage of removing the sealing hexagon nut 34 of the refrigerant charge service port 23.
  • the port specification of the refrigerant charge service port 23 is a screw having a screw diameter of 1/2 inch which is the same as that of the conventional R410A refrigerant.
  • the charging hose 26, vacuum pump 25, pressure gauge 27, etc. prepared by the operator need only be prepared as before, and these equipments are specially prepared (purchased) for R32. There is no need to do. Therefore, it is possible to expect the operator to quickly disseminate the air conditioner A using a refrigerant having a low global warming potential in the market without the need for the expense and period for special infrastructure maintenance.
  • the port specification for the refrigerant charge service port 23 uses the same 1/2 inch screw as that of the currently mainstream R410A refrigerant, but the port specification used for the conventional R22 refrigerant is used. 7/16 inch screws may be used. Since the operator already possesses the charge hose, vacuum pump, pressure gauge, etc. that have been used in the R22 refrigerant and R410A refrigerant devices that have been used in the past, the same effect can be obtained even for the R22 refrigerant. Is obtained.
  • the air conditioner A is not limited to the separate type home air conditioner, and the refrigerant charge If the outdoor service port 23 is provided in the outdoor unit 2, the air conditioner A can be applied to a commercial air conditioner, a refrigeration apparatus, and the like.
  • FIG. FIG. 7 is an explanatory diagram for explaining the specifications of the pipe connection valve of the outdoor unit 2 according to Embodiment 2 of the present invention. Based on FIG. 7, the recognition by the operator of the kind of refrigerant
  • coolant enclosed with the air conditioning apparatus A is demonstrated.
  • 7A is an enlarged view in which the side surface of the outdoor unit 2 is enlarged
  • FIG. 7B is a perspective view of the display board 36
  • FIG. 7C is a perspective view of the display board 37.
  • the same parts as those in the first embodiment are denoted by the same reference numerals, and differences from the first embodiment will be mainly described.
  • the outdoor unit 2 according to the second embodiment is different from the outdoor unit 2 according to the first embodiment in that a display board 36 or a display board 37 is provided as a warning means.
  • the outdoor unit 2 according to the second embodiment has a display board 36 displaying a refrigerant name as a type of refrigerant on at least one of the hexagonal columnar surfaces of the sealing hexagon nut 24. Or the display board 37 is installed.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • the display board 36 has a display part 36a on which the refrigerant name is displayed, and a projection part 36b extending from one end of the display part 36a in a direction orthogonal to the display surface of the display part 36a.
  • the protrusion 36b is provided with a C-shaped attachment portion 36c.
  • the display unit 36a is formed of, for example, a flat plate member, and “R32” that is a refrigerant name is displayed on the surface facing the outside in a state where the display plate 36 is attached.
  • the attachment portion 36c is adapted to be fitted to the neck of the screw portion of the refrigerant charge service port 23 using an elastic force. By fitting the attachment portion 36c on the neck of the screw portion of the refrigerant charge service port 23 of the gas side pipe connection valve 9, the display portion 36a is placed on at least one of the hexagonal columnar surfaces of the sealing hexagon nut 24. Can be held.
  • the display portion 36a and the projection portion 36b may be integrally formed of resin or the like, or may be formed by combining different materials.
  • the protrusion 36b is formed of a material having an elastic force.
  • the one end side of the left-right direction of the display part 36a may be bend
  • the display board 37 has a display part 37a on which the refrigerant name is displayed, and a protrusion part 37b extending from one end of the display part 37a in a direction orthogonal to the display surface of the display part 37a.
  • the protrusion 37b is provided with a C-shaped attachment portion 37c.
  • the display unit 37a is formed of, for example, a flat member, and the refrigerant name “R32” and “a mark indicating that it is a flammable refrigerant” are displayed on the surface facing the outside in a state where the display plate 37 is attached. ing.
  • the attachment portion 37c is adapted to be fitted on the neck portion of the screw portion of the refrigerant charge service port 23 using an elastic force. By fitting the attachment portion 37c on the neck of the screw portion of the refrigerant charge service port 23, the display portion 37a can be held on at least one surface of the hexagonal columnar shape of the sealing hexagon nut 24.
  • the operator When the refrigerant is charged when the outdoor unit 2 is installed or serviced by providing the display plate 36 or the display plate 37, the operator removes the sealing hexagon nut 24 from the refrigerant charge service port 23.
  • the display board 36 must be removed. This is because a wrench cannot be hung on the sealing hex nut 24 unless the display plate 36 is removed. That is, the display board 36 and the display board 37 are one of the accessory parts that require an operator's operation when removing the sealing hexagon nut 24.
  • the outdoor unit 2 when the hexagon nut 24 for sealing is removed, the accessory (the display board 36 or the display board 37) accompanied by the operator's operation is provided.
  • the type of refrigerant used can be surely recognized by the operator, rather than simply a method in which the type of refrigerant is written on a seal or the like and pasted around the connection valve.
  • work the mistaken enclosure of the refrigerant
  • the effect from the viewpoint of safety is great, and in addition, it contributes to suppressing global warming.
  • FIG. FIG. 8 is an explanatory diagram for explaining the specifications of the pipe connection valve of the outdoor unit 2 according to Embodiment 3 of the present invention. Based on FIG. 8, the recognition by the operator of the kind of refrigerant
  • the same parts as those in the first and second embodiments are denoted by the same reference numerals, and the difference from the first and second embodiments will be mainly described.
  • the outdoor unit 2 according to the third embodiment is different from the outdoor unit 2 according to the first embodiment in that a display plate 38 is provided as an alerting means.
  • a display plate 38 displaying the refrigerant name is installed in the hexagonal columnar portion of the sealing hexagon nut 24. Yes.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • the display board 38 has a display part 38a on which the refrigerant name is displayed, and a projection part 38b extending in a direction extending the display surface of the display part 38a from one end of the display part 38a.
  • the projecting portion 38b is provided with a ring-shaped attachment portion 38c corresponding to the hexagonal column shape of the sealing hexagon nut 24.
  • the display unit 38a is formed of, for example, a flat plate-like member, and “R32” that is a refrigerant name is displayed on a surface facing the outside in a state where the display plate 38 is attached.
  • the attachment portion 38c is fitted in the hexagonal column shape of the sealing hex nut 24, and the protrusion 38b is attached to the sealing hex nut 24.
  • the display portion 38a and the projection portion 38b may be integrally formed of resin, metal, or the like, or may be formed of different materials and combined. Further, like the display plate 37 described in the second embodiment, not only the type of refrigerant but also a mark or initial indicating that it is a flammable refrigerant may be added, or a wording of precautions may be displayed. Is possible.
  • the operator can remove the sealing hexagon nut 24 of the refrigerant charge service port 23 before the work.
  • the display board 38 must be removed. This is because a wrench cannot be hung on the sealing hex nut 24 unless the display plate 38 is removed. That is, the display plate 38 is one of the accessory parts that require an operator's operation when removing the sealing hexagon nut 24.
  • the outdoor unit 2 when the hexagon nut 24 for sealing is removed, the accessory (display plate 38) accompanied by the operator's operation is provided.
  • the type of refrigerant used can be surely recognized by the operator, rather than the method of describing the type of refrigerant on a seal or the like and pasting it around the connection valve. For this reason, at the time of a refrigerant
  • the effect from the viewpoint of safety is great, and in addition, it contributes to suppressing global warming.
  • FIG. 9 is an explanatory diagram for explaining the specifications of the pipe connection valve of the outdoor unit 2 according to Embodiment 4 of the present invention. Based on FIG. 9, the recognition by the operator of the kind of refrigerant
  • the same parts as those in the first to third embodiments are denoted by the same reference numerals, and differences from the first to third embodiments will be mainly described.
  • the outdoor unit 2 according to the fourth embodiment is different from the outdoor unit 2 according to the first embodiment in that a display board 40 is provided as an alerting means.
  • the outdoor unit 2 according to Embodiment 4 has a circumferential groove 39 provided in the hexagonal columnar portion of the sealing hexagon nut 24, and the refrigerant name is displayed in the groove 39.
  • a display board 40 is installed.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • channel 39 does not need to be formed in the periphery shape, and may be formed to such an extent that the protrusion part 40b is attached to at least one part of the hexagonal columnar part of the hexagonal nut 24 for sealing. .
  • the display board 40 includes a display unit 40a on which a refrigerant name is displayed, and a protrusion 40b extending from the back surface of the display surface of the display unit 40a in a direction orthogonal to the display surface of the display unit 40a. Yes.
  • the protrusion 40b is provided with a C-shaped attachment 40c.
  • the display unit 40a is formed of, for example, a flat plate-like member, and “R32” that is a refrigerant name is displayed on the surface facing the outside in a state where the display plate 40 is attached.
  • the attachment portion 40c is adapted to be fitted into the groove 39 using an elastic force. By fitting the mounting portion 40 c into the groove 39, the display portion 40 a can be held on the hexagonal columnar portion of the sealing hexagon nut 24.
  • the display portion 40a and the projection portion 40b may be integrally formed of resin or the like, or each may be formed of different materials and combined.
  • the protrusion 40b is made of a material having an elastic force. Further, like the display plate 37 described in the second embodiment, not only the type of refrigerant but also a mark or initial indicating that it is a flammable refrigerant may be added, or a wording of precautions may be displayed. Is possible.
  • the display panel 40 when charging the refrigerant when installing the outdoor unit 2 or during service, the operator must remove the sealing hexagon nut 24 of the refrigerant charging service port 23 before the work.
  • the display board 40 must be removed. This is because a wrench cannot be hung on the sealing hex nut 24 unless the display board 40 is removed. That is, the display board 40 is one of the accessory parts that require an operator's operation when removing the sealing hexagon nut 24.
  • the outdoor unit 2 when the hexagon nut 24 for sealing is removed, the accessory (display plate 40) accompanied by the operator's operation is provided.
  • the type of refrigerant used can be surely recognized by the operator, rather than the method of describing the type of refrigerant on a seal or the like and pasting it around the connection valve. For this reason, at the time of a refrigerant
  • the effect from the viewpoint of safety is great, and in addition, it contributes to suppressing global warming.
  • FIG. FIG. 10 is an explanatory diagram for explaining the specifications of the pipe connection valve of the outdoor unit 2 according to Embodiment 5 of the present invention. Based on FIG. 10, the recognition by the operator of the kind of refrigerant
  • the same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and differences from the first to fourth embodiments will be mainly described.
  • the outdoor unit 2 according to the fifth embodiment is different from the outdoor unit 2 according to the first embodiment in that a display cover 41 is provided as an alerting means.
  • a cylindrical display cover 41 displaying a refrigerant name is installed in a hexagonal columnar portion of the sealing hexagon nut 24. It has become.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • the display cover 41 is configured to display the refrigerant name “R32” and cover the hexagonal columnar portion of the sealing hexagon nut 24. That is, the display cover 41 has a hexagonal column shape of the sealing hexagonal nut 24 inserted therein, and covers the outer periphery of the hexagonal columnar shape of the sealing hexagonal nut 24.
  • the display cover 41 may be open at both ends of the cylinder, or may be open at only one end of the cylinder into which the hexagonal column shape of the sealing hexagon nut 24 is inserted.
  • the display cover 41 may be formed of an elastic member such as resin, metal, or rubber. Further, like the display plate 37 described in the second embodiment, not only the type of refrigerant but also a mark or initial indicating that it is a flammable refrigerant may be added, or a wording of precautions may be displayed. Is possible.
  • the operator can remove the sealing hexagon nut 24 of the refrigerant charging service port 23 before the work.
  • the display cover 41 must be removed. This is because a wrench cannot be hung on the sealing hex nut 24 unless the display cover 41 is removed. That is, the display cover 41 is one of the accessory parts that require an operator's operation when removing the sealing hexagon nut 24.
  • the outdoor unit 2 when the hexagon nut 24 for sealing is removed, the accessory (display cover 41) accompanied by the operator's operation is provided, so that The type of refrigerant used can be surely recognized by the operator, rather than the method of describing the type of refrigerant on a seal or the like and pasting it around the connection valve.
  • work the mistaken enclosure of the refrigerant
  • the effect from the viewpoint of safety is great, and in addition, it contributes to suppressing global warming.
  • FIG. FIG. 11 is an explanatory diagram for explaining the specifications of the pipe connection valve of the outdoor unit 2 according to Embodiment 6 of the present invention. Based on FIG. 11, the recognition by the operator of the kind of refrigerant
  • the same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and differences from the first to fifth embodiments will be mainly described.
  • the outdoor unit 2 according to the sixth embodiment is different from the outdoor unit 2 according to the first embodiment in that a display plate 42 is provided as an alerting means. As shown in FIG. 11, the outdoor unit 2 according to the sixth embodiment is configured such that a display plate 42 displaying the refrigerant name is installed at the neck of the screw portion of the refrigerant charge service port 23.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • the display board 42 has a display part 42a on which the refrigerant name is displayed, and a protrusion 42b extending in a direction extending the display surface of the display part 42a from one end of the display part 42a.
  • the protrusion 42b is provided with a ring-shaped attachment portion 42c corresponding to the neck of the screw portion of the refrigerant charge service port 23.
  • the display unit 42a is formed of, for example, a flat plate member, and “R32”, which is a refrigerant name, is displayed on a surface facing the sealing hexagon nut 24 in a state where the display plate 42 is attached.
  • the attachment portion 42c is attached to the neck of the screw portion of the refrigerant charge service port 23.
  • the sealing hexagon nut 24 is attached to the refrigerant charge service port 23 in a state where the display plate 42 is attached to the neck of the screw portion of the refrigerant charge service port 23. Therefore, the display plate 42 is prevented from dropping by the sealing hexagon nut 24. Further, when the operator hangs a wrench on the sealing hex nut 24, the display portion 42a of the display plate 42 is viewed.
  • the display part 42a and the protrusion part 42b may be integrally formed of resin, metal, or the like, or may be formed by combining different materials. Further, like the display plate 37 described in the second embodiment, not only the type of refrigerant but also a mark or initial indicating that it is a flammable refrigerant may be added, or a wording of precautions may be displayed. Is possible.
  • the operator When the refrigerant is charged when the outdoor unit 2 is installed or serviced by providing the display plate 42, the operator removes the display plate 42 when removing the sealing hexagon nut 24 of the refrigerant charge service port 23. Will see. This is because the display plate 42 is attached by the sealing hexagon nut 24 so as not to drop off. In addition, when the charging hose 26 is attached, the display plate 42 may have to be removed. This is because it is necessary to securely attach the charging hose 26 to the refrigerant charging service port 23. That is, the display plate 42 is one of the accessory parts that require an operator's operation when removing the sealing hexagon nut 24.
  • the outdoor unit 2 when the hexagon nut 24 for sealing is removed, the accessory (display plate 42) accompanied by the operator's operation is provided.
  • the type of refrigerant used can be surely recognized by the operator, rather than the method of describing the type of refrigerant on a seal or the like and pasting it around the connection valve. For this reason, at the time of a refrigerant
  • the effect from the viewpoint of safety is great, and in addition, it contributes to suppressing global warming.
  • FIG. 12 to 14 are explanatory views for explaining the specifications of the pipe connection valve of the outdoor unit 2 according to Embodiment 7 of the present invention. Based on FIGS. 12 to 14, recognition by the operator of the type of refrigerant sealed in the air conditioner A will be described.
  • the same parts as those in the first to sixth embodiments are denoted by the same reference numerals, and differences from the first to sixth embodiments will be mainly described.
  • the outdoor unit 2 according to the seventh embodiment is different from the outdoor unit 2 according to the first embodiment in that a display cover 43 is provided as an alerting means.
  • the outdoor unit 2 according to Embodiment 7 has one end at the root of the refrigerant pipe connection port (hereinafter referred to as the refrigerant pipe connection port 45) of the main body of the gas side pipe connection valve 9.
  • the display cover 43 is installed so that the other end of the sealing hexagonal nut 24 is detachably covered at least in part.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • the display cover 43 displays a refrigerant name, a display portion 43a that detachably covers a hexagonal columnar portion of the sealing hexagon nut 24, and a part of the display portion 43a extends to the refrigerant pipe connection port 45.
  • the extended portion 43b, the ring-shaped attachment portion 44 provided at one end of the extension portion 43b and attached to the root portion of the refrigerant pipe connection port 45, and the extension portion 43b and the attachment portion 44 are connected to each other so as to be bent.
  • the bent portion 46 and the extended portion 43b of the display portion 43a are formed on the opposite side of the display portion 43a, and the display portion 43a covers the hexagonal columnar portion of the sealing hexagon nut 24 in a sealed state. And a projection 47 that contacts the hexagon nut 24 for use.
  • the extended portion 43b, the attachment portion 44, the bent portion 46, and the protrusion 47 correspond to the “holding portion” of the present invention.
  • the display 43 a is parallel to at least two surfaces of the hexagonal columnar portion of the sealing hex nut 24 and parallel to the tip of the sealing hex nut 24.
  • “R32”, which is the refrigerant name, is displayed on at least one of the surfaces. 12 and 13 show an example in which the refrigerant name is displayed on one surface of the display unit 43a on the front side of the sheet.
  • the extended portion 43 b connects the display portion 43 a and the attachment portion 44.
  • the extending portion 43b has a length that extends from the refrigerant pipe connection port 45 to the neck of the screw portion of the refrigerant charge service port 23, for example.
  • the extended portion 43 b is shown as an example in which one surface of the display portion 43 a is extended in the direction of the refrigerant pipe connection port 45, but as shown in FIG.
  • the extended portion 43b may have a string shape made of resin, fiber, metal, or the like.
  • the attachment portion 44 is adapted to be attached to the refrigerant pipe connection port 45 by inserting the refrigerant pipe connection port 45 through a ring-shaped portion.
  • the bent portion 46 is a hinge, and moves the display portion 43a and the extended portion 43b in a state where the attachment portion 44 is attached to the root portion of the refrigerant pipe connection port 45.
  • the extending part 43b is made into a string shape, it is not necessary to provide the bent part 46.
  • the projection 47 is sealed. It is formed so as to protrude toward the sealing hexagon nut 24 at a position where it is caught by the hexagonal columnar portion. That is, the display cover 43 is fitted into the hexagonal columnar portion of the sealing hex nut 24 by the display portion 43 a and the protrusion 47 so as to cover the sealing hex nut 24.
  • the protrusion 47 does not need to be provided.
  • the projection 47 contacts the sealing hex nut 24, and is fixed at the position as it is.
  • the projection 47 is bent by elasticity, and the projection 47 is detached from the sealing hexagon nut 24.
  • the display cover 43 is configured to open to the side opposite to the sealing hexagon nut 24 via the bent portion 46.
  • the display portion 43a, the extended portion 43b, the attachment portion 44, and the protrusion 47 may be integrally formed of resin, metal, or the like, and each is formed of different materials and combined. You may do it.
  • the protrusion 47 is formed of a material having an elastic force. Further, like the display plate 37 described in the second embodiment, not only the type of refrigerant but also a mark or initial indicating that it is a flammable refrigerant may be added, or a wording of precautions may be displayed. Is possible.
  • the operator can remove the sealing hexagon nut 24 of the refrigerant charging service port 23 before the work.
  • the display part 43a of the display cover 43 must be removed. This is because a wrench cannot be hung on the sealing hex nut 24 unless the display portion 43a is removed. That is, the display cover 43 is one of the accessory parts that require an operator's operation when removing the sealing hexagon nut 24.
  • the outdoor unit 2 when the hexagon nut 24 for sealing is removed, the attachment (display cover 43) accompanied by the operator's operation is provided,
  • the type of refrigerant used can be surely recognized by the operator, rather than the method of describing the type of refrigerant on a seal or the like and pasting it around the connection valve.
  • work the mistaken enclosure of the refrigerant
  • the effect from the viewpoint of safety is great, and in addition, it contributes to suppressing global warming.
  • FIG. 15 to 17 are explanatory views for explaining the specifications of the pipe connection valve of the outdoor unit 2 according to Embodiment 8 of the present invention. Based on FIGS. 15 to 17, the recognition by the operator of the type of refrigerant sealed in the air conditioner A will be described.
  • the same parts as those in the first to seventh embodiments are denoted by the same reference numerals, and differences from the first to seventh embodiments will be mainly described.
  • the method of attaching the display cover 41 described in the fifth embodiment is different from the outdoor unit 2 according to the first embodiment.
  • the display cover 41A is referred to to distinguish it from the display cover of the fifth embodiment.
  • the outdoor unit 2 according to the eighth embodiment has a cylindrical shape in which the refrigerant name is displayed on the hexagonal columnar portion of the sealing hex nut 24 as described in the fifth embodiment.
  • the display cover 41A is installed.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • the display cover 41A displays the refrigerant name “R32” and is configured to cover the hexagonal columnar portion of the sealing hexagon nut 24.
  • the display cover 41 ⁇ / b> A is configured such that the hexagonal column shape of the sealing hexagonal nut 24 is inserted therein and covers the outer periphery of the hexagonal columnar shape of the sealing hexagonal nut 24.
  • the display cover 41A may be open at both ends of the cylinder, or may be open only at one end of the cylinder into which the hexagonal column shape of the sealing hexagon nut 24 is inserted.
  • the display cover 41A may be formed of an elastic member such as resin, metal, or rubber. Further, like the display plate 37 described in the second embodiment, not only the type of refrigerant but also a mark or initial indicating that it is a flammable refrigerant may be added, or a wording of precautions may be displayed. Is possible.
  • the display cover 41A displays “R32”, which is the refrigerant name, but “R32” may be displayed as a stamp (hereinafter referred to as a stamp display 80).
  • a stamp display 80 When the display mark 41 is displayed on the bottom surface of the display cover 41A, it becomes difficult to see when the display cover 41A is attached. Therefore, the stamp display 80 may be displayed at an easily visible position in front of the side surface of the display cover 41A.
  • the display cover 41A If the display cover 41A is removed during installation work or service, the display cover 41A may be lost as it is, and the role as a refrigerant identification part may be impaired. Therefore, the display cover 41 ⁇ / b> A is attached to the side panel 66 via the string-like connecting portion 70. By doing so, the display cover 41A cannot be removed from the side panel 66, and therefore the display cover 41A exists even when the refrigerant is charged after several years.
  • the connecting portion 70 is preferably formed integrally with the display cover 41A and has a length 3 to 5 times the size (height dimension) of the display cover 41A. By doing so, workability is not deteriorated.
  • the connecting portion 70 and the display cover 41A may be created separately. In any case, the base end of the connecting portion 70 may be connected to the display cover 41A.
  • the tip of the connecting portion 70 (the end not connected to the display cover 41A) is attached to the side panel 66.
  • the tip of the connecting portion 70 may be fixed to the side panel 66 by screws or the like so that the display cover 41A is not removed.
  • the fixing of the distal end portion of the connecting portion 70 is not limited to screw fixing.
  • the connecting portion 70 includes a main body portion 74 that connects the distal end side and the proximal end side, a distal end locking portion 71 that is positioned at the distal end, and has a shape like an arrow, and a proximal end side (display cover) relative to the distal end locking portion 71. 41A) and a rib 72 that functions as a stopper, and a tip locking portion 71 and a connection portion 73 that connects the rib 72 to the main body portion 74.
  • the front end locking part 71 and the rib 72 constitute the front end part of the connecting part 70. Further, in the case where all of the connecting portions 70 are formed as a single body, it is not necessary to provide the connecting portion 73.
  • the front end locking portion 71 is inserted into a hole formed in the side panel 66 and has a function of locking the entire connecting portion 70 to the side panel 66.
  • the distal end locking portion 71 is formed so as to increase in diameter from the distal end toward the proximal end, and is elastically deformed by this hole when inserted into the hole formed in the side panel 66.
  • the elastic deformation is released, and the proximal end portion of the distal end locking portion 71 comes into contact with the inner wall of the side panel 66.
  • the front end locking portion 71 is locked to the side panel 66, so that the entire connecting portion 70 is attached to the side panel 66.
  • the proximal end side portion of the distal end locking portion 71 abuts against the inner wall of the side panel 66, thereby preventing the removal.
  • the rib 72 is configured in a bowl shape, and is positioned on the outer side of the side panel 66 in a state where the front end locking portion 71 is locked to the side panel 66. Specifically, the rib 72 functions as a suction cup, and functions as a stopper that maintains the state where the connecting portion 70 is attached to the side surface by being adsorbed to the outer surface of the side panel 66.
  • the connecting portion 73 is for connecting the front end locking portion 71 and the rib 72 to the main body portion 74.
  • the connecting portion 73 is formed in a shape protruding to the outer peripheral side of the main body portion 74, and is reinforced so that the front end locking portion 71 and the rib 72 are not easily detached from the main body portion 74.
  • the main body 74 is deformable and is connected to the display cover 41.
  • the attachment (display cover 41A) accompanied by the operator's operation is simply provided.
  • the type of refrigerant used can be surely recognized by the operator, rather than the method of describing the type of refrigerant on a seal or the like and pasting it around the connection valve. For this reason, at the time of a refrigerant
  • FIG. FIG.18 and FIG.19 is explanatory drawing for demonstrating the specification of the piping connection valve
  • the same parts as those in the first to eighth embodiments are denoted by the same reference numerals, and differences from the first to eighth embodiments will be mainly described.
  • the configuration of the display cover 41 described in the fifth embodiment is different from that of the outdoor unit 2 according to the first embodiment.
  • the display cover 41B is referred to to distinguish it from the display cover of the fifth embodiment.
  • the outdoor unit 2 according to the eighth embodiment displays the refrigerant name on the hexagonal columnar portion of the sealing hexagon nut 24 as described in the fifth embodiment.
  • a cylindrical display cover 41B is installed.
  • the sealing hex nut 24 may not be changed, or may be changed to the sealing hex nut 34 described in the first embodiment.
  • the display cover 41 ⁇ / b> B is configured to display the refrigerant name “R32” and cover the hexagonal columnar portion of the sealing hex nut 24. That is, the display cover 41 ⁇ / b> B is configured such that the hexagonal column shape of the sealing hexagonal nut 24 is inserted therein and covers the outer periphery of the hexagonal columnar shape of the sealing hexagonal nut 24.
  • the display cover 41B may be open at both ends of the cylinder, or may be open only at one end of the cylinder into which the hexagonal column shape of the sealing hexagon nut 24 is inserted.
  • the display cover 41B may be formed of an elastic member such as resin, metal, or rubber. Further, like the display plate 37 described in the second embodiment, not only the type of refrigerant but also a mark or initial indicating that it is a flammable refrigerant may be added, or a wording of precautions may be displayed. Is possible.
  • the display cover 41B displays “R32”, which is the refrigerant name, it may be a stamped display 80 in which “R32” is stamped in the same manner as the display cover 41A. If the display 80 is displayed on the bottom surface of the display cover 41B, it becomes difficult to see the marking display 80 when the display cover 41B is attached.
  • the display cover 41B may be attached to the sealing hex nut 24 in an inclined state.
  • water droplets are condensed on the refrigerant charging service port 23
  • water accumulates in the display cover 41B. If water accumulates in the display cover 41B and is not drained, the sealing hex nut 24 may be corroded. Therefore, a drain hole 81 is formed in the display cover 41B. By doing so, water accumulated in the display cover 41B can be drained, and corrosion of the sealing hex nut 24 can be prevented.
  • the display cover 41 ⁇ / b> B may be attached to the side panel 66 using the connecting portion 70 described in the eighth embodiment.
  • the outdoor unit 2 when the hexagon nut for sealing 24 is removed, the accessory (display cover 41B) accompanied by the operator's operation is provided.
  • the type of refrigerant used can be surely recognized by the operator, rather than the method of describing the type of refrigerant on a seal or the like and pasting it around the connection valve. For this reason, at the time of a refrigerant
  • the appearance colors of the display board 36, the display board 37, the display board 38, the display board 40, the display cover 41 (including the display cover 41A and the display cover 41B), the display board 42, and the display cover 43 are described.
  • the explanation of is not special.
  • the display color of the refrigerant cylinder differs depending on the refrigerant, it is preferable that the appearance color of these display boards and display covers be the same color as the refrigerant cylinder so that the type of refrigerant can be easily understood.
  • the cylinder display color of the refrigerant R32 is light blue
  • the display board and the display cover are also preferably light blue.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air Conditioning Control Device (AREA)
PCT/JP2014/058628 2013-07-24 2014-03-26 室外機及び空気調和装置 WO2015011952A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14829739.3A EP3026374B1 (de) 2013-07-24 2014-03-26 Ausseneinheit und klimaanlage
US14/897,692 US20160131404A1 (en) 2013-07-24 2014-03-26 Outdoor unit and air-conditioning apparatus
SG11201510227UA SG11201510227UA (en) 2013-07-24 2014-03-26 Outdoor unit and air-conditioning apparatus
AU2014294470A AU2014294470B2 (en) 2013-07-24 2014-03-26 Outdoor unit and air-conditioning apparatus

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JP2013-153762 2013-07-24
JP2013153762 2013-07-24
JP2013-222901 2013-10-28
JP2013222901A JP5984779B2 (ja) 2013-07-24 2013-10-28 室外機及び空気調和装置

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EP (1) EP3026374B1 (de)
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AU (1) AU2014294470B2 (de)
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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5697710B2 (ja) * 2013-04-08 2015-04-08 三菱電機株式会社 冷凍サイクル装置
JP5984779B2 (ja) * 2013-07-24 2016-09-06 三菱電機株式会社 室外機及び空気調和装置
EP3062044B1 (de) * 2015-01-09 2020-11-18 Mitsubishi Electric Corporation Ausseneinheit und klimaanlage
CN105674435B (zh) * 2016-01-25 2018-11-02 珠海格力电器股份有限公司 一种空调室外机的冷媒灌注方法
JP6915294B2 (ja) * 2017-02-15 2021-08-04 ダイキン工業株式会社 冷凍装置の室外機
CN108759207A (zh) * 2018-07-16 2018-11-06 格力电器（杭州）有限公司 管路组件、室外机及压缩机冷媒的灌注方法
EP3978822A4 (de) * 2019-05-31 2022-06-08 Mitsubishi Electric Corporation Klimatisierungsvorrichtung
CN111023640A (zh) * 2019-11-18 2020-04-17 长春中车轨道车辆有限公司 城轨车辆空调系统制冷剂检测加注装置及加注方法
DE102022123440A1 (de) 2022-09-14 2024-03-14 Vaillant Gmbh Serviceanschluss für ein Wärmepumpengehäuse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194011A (ja) * 1992-12-25 1994-07-15 Sanden Corp 冷凍回路の冷媒供給部
JPH07269904A (ja) * 1994-03-30 1995-10-20 Toshiba Corp 冷凍サイクル
JPH10281598A (ja) * 1997-03-31 1998-10-23 Sanyo Electric Co Ltd 空気調和機
JPH10311629A (ja) 1997-05-13 1998-11-24 Sanyo Electric Co Ltd 冷却装置
JPH10311630A (ja) * 1997-05-13 1998-11-24 Sanyo Electric Co Ltd 冷却装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824481A (en) * 1955-03-23 1958-02-25 Sidney P Johnson Stress-indicating fastener
GB2031858A (en) * 1978-09-26 1980-04-30 Lucas Industries Ltd Sealing devices for bleed screws
GB2091822B (en) * 1980-11-28 1985-07-24 Witt John Edward Seal for a brake bleed nipple
US4530421A (en) * 1984-03-07 1985-07-23 Chartwell Corporation Oil drainage and collection system
US5046645A (en) * 1988-02-19 1991-09-10 Mckesson Corporation Syphon package with mechanically attached valve
JPH0348084A (ja) * 1989-07-11 1991-03-01 Katsunori Koyama 開閉弁の表示方法
JPH10274454A (ja) * 1997-03-28 1998-10-13 Sanyo Electric Co Ltd 空気調和装置
JP2000146370A (ja) * 1998-11-05 2000-05-26 Hitachi Ltd 冷凍サイクル
JP2003233319A (ja) * 2002-02-12 2003-08-22 Mitsubishi Electric Corp 冷凍空調装置の表示ラベル、及び冷凍空調装置
US20070180875A1 (en) * 2006-02-03 2007-08-09 Joseph Byrne Combination tool
JP4271208B2 (ja) * 2006-06-20 2009-06-03 株式会社東芝 衣類乾燥装置
CN101307970A (zh) * 2007-05-18 2008-11-19 乐金电子(天津)电器有限公司 空调器冷媒管加液接口及球阀结构
US20090139598A1 (en) * 2007-11-29 2009-06-04 New England Die Cutting, Inc. Cover assembly
CN202757364U (zh) * 2012-07-26 2013-02-27 重庆冰王制冷设备有限公司 冷冻冷藏机用收氟机
JP5984779B2 (ja) * 2013-07-24 2016-09-06 三菱電機株式会社 室外機及び空気調和装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194011A (ja) * 1992-12-25 1994-07-15 Sanden Corp 冷凍回路の冷媒供給部
JPH07269904A (ja) * 1994-03-30 1995-10-20 Toshiba Corp 冷凍サイクル
JPH10281598A (ja) * 1997-03-31 1998-10-23 Sanyo Electric Co Ltd 空気調和機
JPH10311629A (ja) 1997-05-13 1998-11-24 Sanyo Electric Co Ltd 冷却装置
JPH10311630A (ja) * 1997-05-13 1998-11-24 Sanyo Electric Co Ltd 冷却装置

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AU2014294470A1 (en) 2016-01-28
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CN104344614B (zh) 2017-06-27
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