AU2016204549B2 - Refrigeration cycle apparatus - Google Patents

Refrigeration cycle apparatus Download PDF

Info

Publication number
AU2016204549B2
AU2016204549B2 AU2016204549A AU2016204549A AU2016204549B2 AU 2016204549 B2 AU2016204549 B2 AU 2016204549B2 AU 2016204549 A AU2016204549 A AU 2016204549A AU 2016204549 A AU2016204549 A AU 2016204549A AU 2016204549 B2 AU2016204549 B2 AU 2016204549B2
Authority
AU
Australia
Prior art keywords
refrigerant
heat exchanger
refrigerant pipe
indication section
compressor
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
AU2016204549A
Other versions
AU2016204549A1 (en
Inventor
Yasuhiro Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to AU2016204549A priority Critical patent/AU2016204549B2/en
Publication of AU2016204549A1 publication Critical patent/AU2016204549A1/en
Application granted granted Critical
Publication of AU2016204549B2 publication Critical patent/AU2016204549B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • 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
    • F25B49/00—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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve

Abstract

In an outdoor unit (102) of a refrigeration cycle apparatus (100), extension pipe connection valves (13a, 13b) are set on a valve base (54) fixed to a partition plate (50) and a machine chamber side panel (53), and an indication section (61) is arranged on a surface of the valve base (54) on a machine chamber front panel (52) side. The indication section (61) indicates, in addition to a name of refrigerant to be used, a refrigerant class, refrigerant properties, work environment guidelines, and information for access to the work environment guidelines.

Description

REFRIGERATION CYCLE APPARATUS
Technical Field [0001]
The present invention relates to a refrigeration cycle apparatus, and more particularly, to a refrigeration cycle apparatus to be mounted on an air-conditioning apparatus, a hot water supply unit, a refrigerating machine, a vending machine, or the like.
Background Art [0002]
Hitherto, in an apparatus including a device for executing a refrigeration cycle (referred to as refrigeration cycle apparatus in the present invention) as represented by an air-conditioning apparatus, HFC refrigerant such as R410A having no flame propagation is used as refrigerant. Unlike related-art HCFC refrigerant such as R22, R410A has an ozone depletion potential (hereinafter referred to as ODP) of zero and hence does not deplete an ozone layer. However, R410A has a property of 20 high global warming potential (hereinafter referred to as GWP).
Therefore, as a part of prevention of global warming, consideration has been made to replace the HFC refrigerant having high GWP, such as R410A, with refrigerant having low GWP.
[0003]
As candidate refrigerant having low GWP, there is given HC refrigerant such as
R290 (C3H8; propane) and R1270 (C3H6; propylene), which are natural refrigerants. However, unlike R410A having no flame propagation, the HC refrigerant has flammability at a high flammable level, and hence caution is required for refrigerant leakage.
1001501974
2016204549 30 Jun 2016 [0004]
Further, as another candidate refrigerant having low GWP, there is given HFC refrigerant having no carbon-carbon double bond in a composition thereof, such as R32 (CH2F2; difluoromethane) having GWP lower than R410A.
Further, as similar refrigerant candidate, there is given a halogenated hydrocarbon having a carbon-carbon double bond in a composition thereof, which is a kind of the HFC refrigerant similarly to R32. As such halogenated hydrocarbon, there are given, for example, HFO-1234yf (CF3CF=CH2; tetrafluoropropene) and HFO-1234ze (CF3-CH=CHF). Note that, in order to distinguish the HFC refrigerant having a carbon-carbon double bond in a composition thereof from the HFC refrigerant having no carbon-carbon double bond in a composition thereof, such as R32, the HFC refrigerant having a carbon-carbon double bond in a composition thereof is expressed as HFO through use of O of an olefin (unsaturated hydrocarbon having a carbon-carbon double bond is called an olefin) in most cases. [0005]
The above-mentioned HFC refrigerant (including the HFO refrigerant) having low GWP is not as high flammable as the HC refrigerant such as R290 (C3H8; propane), which is natural refrigerant, but the HFC refrigerant (including the HFO refrigerant) having low GWP has flammability at a slightly flammable level unlike 20 R410A having no flame propagation. Therefore, similarly to R290, caution is required for refrigerant leakage. Refrigerant having flammability is hereinafter referred to as flammable refrigerant even when the flammability is at a slightly flammable level.
Further, as still another candidate refrigerant having low GWP, R717 (NH3;
ammonia) is given. However, R717 has flammability at a slightly flammable level similarly to R32 (CH2F2; difluoromethane) and also has toxicity. Therefore, similarly to R290, caution is required for refrigerant leakage. Refrigerant having toxicity is hereinafter referred to as toxic refrigerant.
[0006]
As described above, caution is required for refrigerant leakage of the
1001501974
2016204549 30 Jun 2016 flammable refrigerant or the toxic refrigerant. Therefore, there is disclosed such a cooling device that a refrigerant name indication label indicating a name of refrigerant to be used in the cooling device is attached to the vicinity of a service port for connection to a charging hose so that a service engineer (hereinafter referred to as on-site worker) can reconfirm the refrigerant to be used particularly when filling the refrigerant to be used into the cooling device (see, for example, Patent Literature 1).
Further, there is disclosed such a vending machine that a tape is attached to an outer wall of a compressor to provide refrigerant indication such as refrigerant name, refrigerant No., chemical name, chemical formula, and refrigerant features, and warning indication such as exclamation mark, flammability mark, danger/warning indication, caution for high voltage, and handle with care (see, for example, Patent Literature 2).
Citation List
Patent Literature [0007]
Patent Literature 1: Japanese Unexamined Patent Application Publication No. 10-311629 (Page 3, Fig. 2)
Patent Literature 2: Japanese Unexamined Patent Application Publication No. 20 2008-40652 (Page 6, Fig. 2) [0007A]
Reference to any prior art in the specification is not an acknowledgment or suggestion that this prior art forms part of the common general knowledge in any jurisdiction or that this prior art could reasonably be expected to be understood, 25 regarded as relevant, and/or combined with other pieces of prior art by a skilled person in the art.
Summary of Invention [0007B]
1001501974
2016204549 30 Jun 2016
As used herein, except where the context requires otherwise, the term comprise and variations of the term, such as comprising, comprises and comprised, are not intended to exclude further additives, components, integers or steps. [0008]
In the cooling device disclosed in Patent Literature 1, the refrigerant name indication label indicates the name of refrigerant to be used (refrigerant name), but the label does not indicate properties of refrigerant such as flammability and toxicity.
Further, in the vending machine disclosed in Patent Literature 2, the refrigerant features and the flammability mark are indicated in addition to the refrigerant name, but for example, the degree of flammability is not indicated in spite of the indication of the distinction between no flame propagation and flammability. That is, the degree of properties of refrigerant for indicating whether the refrigerant is high flammable or slightly flammable is not indicated.
[0009]
Therefore, during on-site work such as installation, repair, or dismantlement, the on-site worker cannot necessarily understand specific work environment guidelines on what construction method and tool, protective tool, work environment, and the like need to be prepared depending on the degree of properties of refrigerant 20 to be used.
Thus, there is a problem in that, if the refrigerant leaks during the on-site work, measures appropriate for the on-site worker and people around the site cannot be taken. For example, the following problem may arise. The levels of the work environment guidelines such as the constraint on fire use, the specification constraint 25 on an electric tool, and the work environment of ventilation and air circulation vary depending on the degree of flammability of refrigerant to be used. Therefore, when the on-site worker starts on-site work without correctly understanding the work environment guidelines, the on-site work preparation in accordance with the work environment guidelines that vary in request level depending on the degree of flammability of refrigerant may be insufficient. If the refrigerant leaks in this case,
1002612976
2016204549 24 Jun 2019 appropriate measures cannot be taken sufficiently.
[0010]
The present disclosure seeks to address the above-mentioned problem. At least one arrangement of the disclosure is envisaged to provide a refrigeration cycle apparatus that enables an on-site worker to understand work environment guidelines in accordance with the degree of properties of refrigerant in a stage in which the onsite worker starts on-site work such as installation, repair, or dismantlement of the refrigeration cycle apparatus using refrigerant having flammability and toxicity, thereby allowing appropriate measures to be taken sufficiently even in the case where the refrigerant leaks during the on-site work.
[0010A]
According to a first aspect of the invention, there is provided a refrigeration cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a loadside heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service port for supplying the refrigerant; a partition plate between a fan chamber and a zu machine chamber including the compressor and an outdoor refrigerant pipe of the refrigerant pipe and an indication section that indicates information on fire use during on-site work, the indication section being arranged at a position of the service port, wherein the service port is one of a plurality of service ports located behind a removable panel proximate to each other, the indication section is located behind the 25 removable panel proximate the plurality of service ports, forward of the location of the plurality of service ports and the outdoor refrigerant pipe; and the indication section is supported at least on one side by a portion, proximate the removable panel, of the partition plate, and on another side by structure at or near the service port.
[0010B]
According to a second aspect of the invention, there is provided a refrigeration
1002612976
2016204549 24 Jun 2019 cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service port for supplying the refrigerant; a partition plate between a fan chamber and a machine chamber including the compressor and an outdoor refrigerant pipe of the refrigerant pipe; and an indication section that indicates information on a tool used in on-site work, the indication section being arranged at a position of the service port, wherein the service port is one of a plurality of service ports located behind a removable panel proximate to each other, and the indication section is located behind the removable panel proximate the plurality of service ports, forward of the location of the plurality of service ports and the outdoor refrigerant pipe; and the indication section is supported at least on one side by a portion, proximate the removable panel, ofthe partition plate, and on another side by structure at or near the service port.
[0010C]
According to a third aspect of the invention, there is provided a refrigeration cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat zu source-side heat exchanger; a pressure reducing device; a load-side heat exchanger;
a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service port for supplying the 25 refrigerant; a partition plate between a fan chamber and a machine chamber including the compressor and an outdoor refrigerant pipe of the refrigerant pipe; and an indication section that indicates information on ventilation and air circulation during on-site work, the indication section being arranged at a position of the service port, wherein the service port is one of a plurality of service ports located behind a 30 removable panel proximate to each other, and the indication section is located behind
1002612976
2016204549 24 Jun 2019 the removable panel proximate the plurality of service ports, forward of the location of the plurality of service ports and the outdoor refrigerant pipe; and the indication section is supported at least on one side by a portion, proximate the removable panel, of the partition plate, and on another side by structure at or near the service port.
[0010D]
According to a fourth aspect of the invention, there is provided a refrigeration cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service port for supplying the refrigerant; a partition plate between a fan chamber and a machine chamber including the compressor and an outdoor refrigerant pipe of the refrigerant pipe; and an indication section that indicates information for access to a manual used during onsite work, the indication section being arranged at a position of the service port, wherein the service port is one of a plurality of service ports located behind a removable panel proximate to each other, and the indication section is located behind the removable panel proximate the plurality of service ports, forward of the location of zu the plurality of service ports and the outdoor refrigerant pipe; and the indication section is supported at least on one side by a portion, proximate the removable panel, of the partition plate, and on another side by structure at or near the service port.
[0010E]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other; a heat source-side unit including the compressor and the heat source-side heat exchanger;
1002612976
2016204549 24 Jun 2019 and a load-side unit including the load-side heat exchanger, wherein one of two ends of an extension pipe as the part of the refrigerant pipe is connected to a heat sourceside connection valve arranged at a heat source-side refrigerant pipe as the part of the refrigerant pipe arranged in the heat source-side unit, the other one of the two ends of the extension pipe as the part of the refrigerant pipe is connected to a loadside connection valve arranged at a load-side refrigerant pipe as the part of the refrigerant pipe arranged in the load-side unit, and the refrigeration cycle apparatus comprises an indication section that indicates information on fire use during on-site work, the indication section being arranged on at least one of a position of the heat source-side connection valve and a position of the load-side connection valve.
[001 OF]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other; a heat source-side unit including the compressor and the heat source-side heat exchanger; and a load-side unit including the load-side heat exchanger, wherein one of two ends zu of an extension pipe as the part of the refrigerant pipe is connected to a heat sourceside connection valve arranged at a heat source-side refrigerant pipe as the part of the refrigerant pipe arranged in the heat source-side unit, the other one of the two ends of the extension pipe as the part of the refrigerant pipe is connected to a loadside connection valve arranged at a load-side refrigerant pipe as the part of the 25 refrigerant pipe arranged in the load-side unit, and the refrigeration cycle apparatus comprises an indication section that indicates information on a tool used in on-site work, the indication section being arranged on at least one of a position of the heat source-side connection valve and a position of the load-side connection valve.
[0010G]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration
1002612976
2016204549 24 Jun 2019 cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, a heat source-side unit including the compressor and the heat source-side heat exchanger; and a load-side unit including the load-side heat exchanger, wherein one of two ends of an extension pipe as the part of the refrigerant pipe is connected to a heat sourceside connection valve arranged at a heat source-side refrigerant pipe as the part of the refrigerant pipe arranged in the heat source-side unit, the other one of the two ends of the extension pipe as the part of the refrigerant pipe is connected to a loadside connection valve arranged at a load-side refrigerant pipe as the part of the refrigerant pipe arranged in the load-side unit, and the refrigeration cycle apparatus comprises an indication section that indicates information on ventilation and air circulation during on-site work, the indication section being arranged on at least one of a position of the heat source-side connection valve and a position of the load-side connection valve.
[0010H]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration zu cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other; a heat 25 source-side unit including the compressor and the heat source-side heat exchanger; and a load-side unit including the load-side heat exchanger, wherein one of two ends of an extension pipe as the part of the refrigerant pipe is connected to a heat sourceside connection valve arranged at a heat source-side refrigerant pipe as the part of the refrigerant pipe arranged in the heat source-side unit, the other one of the two 30 ends of the extension pipe as the part of the refrigerant pipe is connected to a load1002612976
2016204549 24 Jun 2019 side connection valve arranged at a load-side refrigerant pipe as the part of the refrigerant pipe arranged in the load-side unit, and the refrigeration cycle apparatus comprises an indication section that indicates information for access to a manual used during on-site work, the indication section being arranged on at least one of a position of the heat source-side connection valve and a position of the load-side connection valve.
[00101]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other; a service port for the refrigerant pipe, configured for pressure gauge connection thereto or for supplying the refrigerant; and an indication section that indicates information on fire use during on-site work, the indication section being arranged on a part of the refrigerant pipe at a location proximate to the service port.
[0010 J]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration zu cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other; a service 25 port for the refrigerant pipe, configured for pressure gauge connection thereto or for supplying the refrigerant; and an indication section that indicates information on a tool used in on-site work, the indication section being arranged on a part of the refrigerant pipe at a location proximate to the service port.
[001 OK]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration
1002612976
2016204549 24 Jun 2019 cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other; a service port for the refrigerant pipe, configured for pressure gauge connection thereto or for supplying the refrigerant; and an indication section that indicates information on ventilation and air circulation during on-site work, the indication section being arranged on a part of the refrigerant pipe at a location proximate to the service port. [0010L]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration cycle, comprising: a compressor; a heat source-side heat exchanger; a pressure reducing device; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other; a service port for the refrigerant pipe, configured for pressure gauge connection thereto or for supplying the refrigerant; and an indication section that indicates information for access to a manual used during on-site work, the indication section being arranged zu on a part of the refrigerant pipe at a location proximate to the service port.
[0011]
Also disclosed is a refrigeration cycle apparatus for executing a refrigeration cycle, including: a compressor; a heat source-side heat exchanger; expansion means; a load-side heat exchanger; a refrigerant pipe for circulating refrigerant having at least one characteristic of flammability or toxicity by coupling the compressor, the heat source-side heat exchanger, the expansion means, and the load-side heat exchanger to each other; and an indication section arranged on at least one of a part of the refrigerant pipe, a part of a pipe support member for supporting the refrigerant pipe, a periphery of the part of the refrigerant pipe, and a periphery of the part of the pipe support member, the indication section being
1002612976
2016204549 24 Jun 2019 configured to indicate work environment guidelines in accordance with the at least one characteristic of the refrigerant.
[0012]
According to the one embodiment disclosed within the following, in the refrigeration cycle apparatus using the refrigerant having the at least one characteristic of flammability or toxicity, the indication section for indicating the work environment guidelines in accordance with the refrigerant characteristic is arranged on the at least one of the part of the refrigerant pipe, the part of the pipe support member for supporting the refrigerant pipe, the periphery of the part of the refrigerant pipe, or the periphery of the part of the pipe support member.
Therefore, the indication section attracts the attention of the on-site worker during on-site work having a risk of refrigerant leakage, such as the time when the refrigeration cycle apparatus is installed, when a valve is opened for extension pipe connection or a test operation, when the valve is closed for collecting the refrigerant during repair, when a refrigerant cylinder is connected for filling the refrigerant, or when the valve is closed for collecting the refrigerant during dismantlement.
1001501974
2016204549 30 Jun 2016
With this, attention required for the on-site work is aroused, and the on-site worker can understand the work environment guidelines indicated on the indication section readily and exactly. Thus, even in the case where the refrigerant having flammability and toxicity leaks during the on-site work such as installation, repair, or dismantlement, measures appropriate for the on-site worker and people around the site can be taken, with the result that the refrigeration cycle apparatus enhanced in reliability for unexpected refrigerant leakage can be obtained.
Brief Description of Drawings [0013] [Fig. 1] Fig. 1 is a refrigerant circuit diagram schematically illustrating a configuration of a refrigerant circuit, for illustrating an air-conditioning apparatus serving as a refrigeration cycle apparatus according to Embodiment 1 of the present invention.
[Fig. 2] Fig. 2 is a perspective view illustrating an outer appearance of an outdoor unit of the air-conditioning apparatus serving as the refrigeration cycle apparatus according to Embodiment 1 of the present invention.
[Fig. 3] Fig. 3 is a perspective view illustrating an outer appearance of the outdoor unit of the air-conditioning apparatus serving as the refrigeration cycle apparatus according to Embodiment 1 of the present invention in a state in which a front panel and a top panel are removed.
[Fig. 4] Fig. 4 is a front view illustrating an indication section arranged in the airconditioning apparatus illustrated in Fig. 1 to Fig. 3 in the case where refrigerant is R32.
[Fig. 5] Fig. 5 is a front view illustrating the indication section arranged in the air-conditioning apparatus illustrated in Fig. 1 to Fig. 3 in the case where refrigerant is R290 (propane).
[Fig. 6] Fig. 6 is a front view illustrating the indication section arranged in the air-conditioning apparatus illustrated in Fig. 1 to Fig. 3 in the case where refrigerant is 30 R717 (ammonia).
1001501974
2016204549 30 Jun 2016 [Fig. 7] Fig. 7 is a front view of the indication section arranged in the airconditioning apparatus illustrated in Fig. 1 to Fig. 3 in the case where indication items are modified.
[Fig. 8] Fig. 8 is a front view of the indication section arranged in the airconditioning apparatus illustrated in Fig. 1 to Fig. 3 in the case where indication items are modified.
[Fig. 9] Fig. 9 is a perspective view illustrating a modified example of an indoor unit forming the air-conditioning apparatus illustrated in Fig. 1 to Fig. 3.
Description of Embodiments [0014] [Embodiment 1]
Fig. 1 to Fig. 3 illustrate an air-conditioning apparatus serving as a refrigeration cycle apparatus according to Embodiment 1 of the present invention. Fig. 1 is a refrigerant circuit diagram schematically illustrating a configuration of a refrigerant circuit. Fig. 2 is a perspective view illustrating an outer appearance of an outdoor unit. Fig. 3 is a perspective view illustrating an outer appearance of the outdoor unit in a state in which a front panel and a top panel are removed. Note that, each figure is a schematic illustration, and the present invention is not limited to the embodiment 20 illustrated in each figure.
Now, Embodiment 1 of the present invention is described with reference to Fig.
to Fig. 3. In this case, Embodiment 1 is described through use of an airconditioning apparatus for cooling and heating indoors as a refrigeration cycle apparatus using a refrigeration cycle in which refrigerant compressed with a compressor is circulated so as to receive heat from a low-temperature heat source and to exhaust the heat to a high-temperature heat source. Note that, the present invention is not limited to the air-conditioning apparatus, and may be applied to, for example, a heating/cooling system, a hot water supply unit, a refrigerating machine, a vending machine, or the like as long as the refrigeration cycle is executed.
1001501974
2016204549 30 Jun 2016 [0015] (Air-Conditioning Apparatus)
In Fig. 1, an air-conditioning apparatus 100 serving as the refrigeration cycle apparatus according to Embodiment 1 is a separate type including an indoor unit (same as a load-side unit) 101 to be installed indoors, an outdoor unit (same as a heat source-side unit) 102 to be installed outdoors, and extension pipes 10a and 10b for coupling the indoor unit 101 and the outdoor unit 102 to each other.
[0016] (Refrigerant Circuit of Outdoor Unit)
The outdoor unit 102 includes a compressor 3 for compressing and discharging refrigerant, a refrigerant flow switching valve (hereinafter referred to as four-way valve) 4 for switching a flow direction of refrigerant in the refrigerant circuit between a cooling operation and a heating operation, an outdoor heat exchanger 5 serving as a heat source-side heat exchanger for exchanging heat between outdoor air and refrigerant, and a pressure reducing device (hereinafter referred to as expansion valve) 6 serving as expansion means such as an electronically controlled expansion valve for reducing a pressure of refrigerant from a high pressure to a low pressure with a changeable opening degree. Those components are coupled to each other through an outdoor refrigerant pipe (same as a heat source-side refrigerant pipe) 8.
Further, an outdoor air-sending fan 5f for supplying (blowing) outdoor air to the outdoor heat exchanger 5 is set so as to be opposed to the outdoor heat exchanger 5. An air flow passing through the outdoor heat exchanger 5 is generated by rotating the outdoor air-sending fan 5f. The outdoor unit 102 uses a propeller fan as the outdoor air-sending fan 5f, and the propeller fan is arranged on a downstream side of the outdoor heat exchanger 5 (downstream side of the air flow generated by the outdoor air-sending fan 5f) in a mode of sucking outdoor air passing through the outdoor heat exchanger 5.
[0017] (Outdoor Refrigerant Pipe)
The outdoor refrigerant pipe 8 refers to a refrigerant pipe for coupling an
1001501974
2016204549 30 Jun 2016 extension pipe connection valve 13a on a gas side (during the cooling operation) and the four-way valve 4 to each other, a suction pipe 11, a discharge pipe 12, a refrigerant pipe for coupling the four-way valve 4 and the outdoor heat exchanger 5 to each other, a refrigerant pipe for coupling the outdoor heat exchanger 5 and the expansion valve 6 to each other, and a refrigerant pipe for coupling the expansion valve 6 and an extension pipe connection valve 13b on a liquid side (during the cooling operation) to each other. Those pipes are collectively referred to as outdoor refrigerant pipe 8.
[0018] (Extension Pipe Connection Valve)
The extension pipe connection valve 13a on the gas side is arranged in a connection portion of the outdoor refrigerant pipe 8 to the extension pipe 10a on the gas side, whereas the extension pipe connection valve 13b on the liquid side is arranged in a connection portion of the outdoor refrigerant pipe 8 to the extension pipe 10b on the liquid side.
The extension pipe connection valve 13a on the gas side is a two-way valve switchable to be opened or closed, and a flare joint 16a is mounted on one end of the extension pipe connection valve 13a on the gas side.
Further, the extension pipe connection valve 13b on the liquid side is a three20 way valve switchable to be opened or closed, and a service port 14b to be used for evacuation (during work before supply of refrigerant to the air-conditioning apparatus 100) and a flare joint 16b are mounted on the extension pipe connection valve 13b on the liquid side.
Then, a male screw is formed on each outdoor refrigerant pipe 8 side of the flare joints 16a and 16b mounted on the extension pipe connection valves 13a and 13b (also including the service port 14b). At a time of shipping of the outdoor unit 102 (including the shipping of the air-conditioning apparatus 100), a flare nut (not shown) having a female screw to be threadingly engaged with the male screw is mounted on the male screw.
1001501974
2016204549 30 Jun 2016 [0019] (Service Port)
Note that, for convenience of the description below, in the outdoor refrigerant pipe 8, a range connecting the compressor 3 to an inlet of the four-way valve 4 on a discharge side of the compressor 3 is referred to as the discharge pipe 12, and a range connecting the four-way valve 4 to the compressor 3 on a suction side of the compressor 3 is referred to as the suction pipe 11.
Thus, in any of the cooling operation (operation for supplying low-temperature and low-pressure refrigerant to an indoor heat exchanger 7) or the heating operation (operation for supplying high-temperature and high-pressure refrigerant to the indoor heat exchanger 7), the high-temperature and high-pressure gas refrigerant compressed with the compressor 3 constantly flows into the discharge pipe 12, and the low-temperature and low-pressure refrigerant subjected to an evaporation function flows into the suction pipe 11.
[0020]
The low-temperature and low-pressure refrigerant flowing through the suction pipe 11 is sometimes in the form of gas refrigerant and sometimes in a two phase state. A service port 14a with a flare joint on a low-pressure side is formed in the suction pipe 11, and a service port 14c with a flare joint on a high-pressure side is formed in the discharge pipe 12. The service ports 14a and 14c are used for connecting pressure gauges thereto during a test operation at a time of installation or repair so that an operation pressure is measured.
Note that, a male screw is formed on each flare joint (not shown) of the service ports 14a and 14c, and a flare nut (not shown) is mounted on the male screw at a time of shipping of the outdoor unit 102 (including the shipping of the air-conditioning apparatus 100).
[0021] (Refrigerant Circuit of Indoor Unit)
The indoor unit 101 includes the indoor heat exchanger 7 serving as a use-side heat exchanger for exchanging heat between indoor air and refrigerant. An indoor
1001501974
2016204549 30 Jun 2016 refrigerant pipe (same as a use-side refrigerant pipe) 9 is connected to the indoor heat exchanger 7.
A flare joint 15a for connecting the extension pipe 10a on the gas side is arranged in a connection portion of the indoor refrigerant pipe 9 to the extension pipe 10a on the gas side, whereas a flare joint 15b for connecting the extension pipe 10b on the liquid side is arranged in a connection portion of the indoor refrigerant pipe 9 to the extension pipe 10b on the liquid side.
The flare joints 15a and 15b respectively have a male screw formed thereon, and a flare nut (not shown) having a female screw to be threadingly engaged with the male screw is mounted on the male screw at a time of the shipping of the indoor unit 101 (including the shipping of the air-conditioning apparatus 100).
Further, an indoor air-sending fan 7f is set so as to be opposed to the indoor heat exchanger 7, and an air flow passing through the indoor heat exchanger 7 is generated by rotating the indoor air-sending fan 7f. Note that, as the indoor airsending fan 7f, various fans such as a cross flow fan and a turbo fan are adopted depending on the form of the indoor unit 101. Further, the indoor air-sending fan 7f may be positioned on a downstream side or an upstream side of the indoor heat exchanger 7 in the air flow generated by the indoor air-sending fan 7f.
[0022] (Refrigerant Circuit of Air-Conditioning Apparatus)
Both ends of the extension pipe 10a on the gas side are respectively connected removably to the flare joint 16a mounted on the extension pipe connection valve 13a on the gas side of the outdoor unit 102 and the flare joint 15a mounted on the indoor refrigerant pipe 9 of the indoor unit 101, whereas both ends of the extension pipe 10b on the liquid side are respectively connected removably to the flare joint 16b mounted on the extension pipe connection valve 13b on the liquid side of the outdoor unit 102 and the flare joint 15b mounted on the indoor refrigerant pipe 9 of the indoor unit 101.
That is, the outdoor refrigerant pipe 8 and the indoor refrigerant pipe 9 are connected through the extension pipes 10a and 10b to form the refrigerant circuit,
1001501974
2016204549 30 Jun 2016 thereby constructing a compression type heat pump cycle for circulating the refrigerant compressed with the compressor 3.
[0023] (Refrigerant Flow during Cooling Operation)
In Fig. 1, the solid arrows denote a flow direction of the refrigerant during the cooling operation. In the cooling operation, the four-way valve 4 is switched to the refrigerant circuit denoted by the solid line, and the high-temperature and highpressure gas refrigerant discharged from the compressor 3 passes through the fourway valve 4 to first flow into the outdoor heat exchanger 5.
The outdoor heat exchanger 5 serves as a condenser. That is, when the air flow generated by the rotation of the outdoor air-sending fan 5f passes through the outdoor heat exchanger 5, the outdoor air passing through the outdoor heat exchanger 5 and the refrigerant flowing through the outdoor heat exchanger 5 exchange heat, and condensation heat of the refrigerant is supplied to the outdoor air. Thus, the refrigerant is condensed in the outdoor heat exchanger 5 to turn into highpressure and intermediate-temperature liquid refrigerant.
Next, the high-pressure and intermediate-temperature liquid refrigerant flows into the expansion valve 6 and is subjected to adiabatic expansion in the expansion valve 6 to turn into low-pressure and low-temperature two-phase refrigerant.
[0024]
Subsequently, the low-pressure and low-temperature two-phase refrigerant is supplied to the indoor unit 101 through the extension pipe 10b on the liquid side and flows into the indoor heat exchanger 7. The indoor heat exchanger 7 serves as an evaporator. That is, when the indoor air flow generated by the rotation of the indoor 25 air-sending fan 7f passes through the indoor heat exchanger 7, the indoor air passing through the indoor heat exchanger 7 and the refrigerant flowing through the indoor heat exchanger 7 exchange heat, and the refrigerant is evaporated by taking away evaporation heat (heating energy) from the indoor air to turn into low-temperature and low-pressure gas refrigerant or two-phase refrigerant. On the other hand, the indoor 30 air passing through the indoor heat exchanger 7 is cooled by taking away cooling
1001501974
2016204549 30 Jun 2016 energy from the refrigerant, to thereby cool indoors.
Further, the refrigerant, which is turned into the low-temperature and lowpressure gas refrigerant or the two-phase refrigerant through evaporation in the indoor heat exchanger 7, is supplied to the outdoor unit 102 through the extension pipe 10a on the gas side and sucked into the compressor 3 through the four-way valve 4. Then, the low-temperature and low-pressure gas refrigerant or the twophase refrigerant is compressed into high-temperature and high-pressure gas refrigerant again with the compressor 3. In the cooling operation, this cycle is repeated.
[0025] (Refrigerant Flow during Heating Operation)
In Fig. 1, the dotted arrows denote a flow direction of the refrigerant during the heating operation. When the four-way valve 4 is switched to the refrigerant circuit denoted by the dotted line, the refrigerant flows in a direction opposite to that during the cooling operation and first flows into the indoor heat exchanger 7. By operating the indoor heat exchanger 7 as a condenser and operating the outdoor heat exchanger 5 as an evaporator, condensation heat (heating energy) is supplied to the indoor air passing through the indoor heat exchanger 7 to heat the indoor air, thereby performing the heating operation.
[0026] (Refrigerant)
In the air-conditioning apparatus 100, as the refrigerant flowing through the refrigerant circuit, R32 (CH2F2; difluoromethane) is used. R32 is HFC refrigerant that has slight flammability although relatively less influencing global warming due to GWP 25 lower than that of HFC refrigerant R410A, which is currently used widely in airconditioning apparatus. A predetermined amount of the refrigerant is shipped in a state of being sealed in the outdoor unit 102 in advance, and in the case where the amount of the refrigerant is insufficient depending on the length of the extension pipes 10a and 10b when the air-conditioning apparatus 100 is installed, the refrigerant is 30 additionally filled into the air-conditioning apparatus 100 during on-site work.
1001501974
2016204549 30 Jun 2016 [0027]
Note that, the refrigerant is not limited to R32 and may be, for example, HFO refrigerant, such as HFO-1234yf (CF3CF=CH2; tetrafluoropropene) or HFO-1234ze (CF3-CH=CHF), which is a halogenated hydrocarbon having a carbon-carbon double bond in a composition thereof as a kind of the above-mentioned HFC refrigerant having slight flammability similarly to R32, and has GWP further lower than the R32 refrigerant.
Further, the refrigerant may be HC refrigerant having higher flammability, such as R290 (C3H8; propane) or R1270 (C3H6; propylene), or slightly flammable and highly toxic R717 (NH3: ammonia). Further, the refrigerant may be a mixed refrigerant containing two or more kinds of those refrigerants.
[0028] (Structure of Outdoor Unit)
In Fig. 2 and Fig. 3, a housing 2 forming an outer wall of the outdoor unit 102 of the air-conditioning apparatus 100 is formed of a combination of a plurality of plateshaped sheet-metal parts, and a partition plate 50 for partitioning an inside of the outdoor unit 102 (inside of the housing 2) into right and left regions is set in an upright posture on a bottom plate 56 serving as a bottom portion of the housing 2. The housing 2 is partitioned by the partition plate 50 into a fan chamber F including the outdoor air-sending fans 5f and the outdoor heat exchanger 5 and a machine chamber M including the compressor 3, the outdoor refrigerant pipe 8, and an electrical component unit 20.
[0029] (Housing)
The housing 2 forming the outer wall of the outdoor unit 102 is formed of, in addition to the bottom plate 56, a fan chamber front panel 51 covering a front surface of the fan chamber F, an L-shaped machine chamber front panel 52 covering a front surface of the machine chamber M and a front portion of a side surface of the machine chamber M on an opposite side of the partition plate 50, an L-shaped machine chamber side panel 53 covering a back portion of the side surface and a
1001501974
2016204549 30 Jun 2016 back surface of the machine chamber M, and a top panel 55 covering a top surface of the outdoor unit 102 across the fan chamber F and the machine chamber M. Those panels are all made of sheet-metal parts. Note that, the panels forming the housing 2 may be formed of smaller parts or some of the panels may be molded integrally.
A product name plate 60 is attached to an outer front surface of the machine chamber front panel 52, and one of items described in the product name plate 60 is a name of refrigerant to be used. Fig. 3 illustrates the housing in a state in which the top panel 55, the fan chamber front panel 51, and the machine chamber front panel 52 are removed, and the on-site work such as installation, repair, or dismantlement is performed in a state in which at least the machine chamber front panel 52 is removed. Note that, in Fig. 3, electric wiring and the like are not shown.
[0030] (Outdoor Air-Sending Fan)
In the fan chamber front panel 51, substantially circular air outlets 57 are formed so as to be opposed to the outdoor air-sending fans 5f. In order to prevent an object from being brought into contact with the outdoor air-sending fans 5f through the air outlets 57, fan guards 58 ensured in an air flow area are mounted on the air outlets 57.
The outdoor heat exchanger 5 has a substantially L-shape in transverse cross section and is fixed onto the bottom plate 56 so that a long side portion of the outdoor heat exchanger 5 is positioned in a back surface region of the fan chamber F. A short side portion of the outdoor heat exchanger 5 is positioned in a side surface region of the fan chamber F on an opposite side from the partition plate 50. Each outdoor air-sending fan 5f is positioned in front of the long side portion of the outdoor heat exchanger 5 in the fan chamber F. The outdoor heat exchanger 5 is positioned on an upstream side of the air flow generated by the rotation of the outdoor airsending fan 5f, and the outdoor air-sending fan 5f is positioned on a downstream side of the air flow generated by the rotation of the outdoor air-sending fan 5f.
[0031]
At the back of the outdoor air-sending fan 5f, a fan motor 5m for rotationally
1001501974
2016204549 30 Jun 2016 driving the outdoor air-sending fan 5f is arranged so as to be coupled to the outdoor air-sending fan 5f through intermediation of a rotation shaft. The fan motor 5m is fixed onto a fan motor support plate 59 that is fixed onto the bottom plate 56 in an upright posture. The fan motor support plate 59 is positioned between the outdoor air-sending fan 5f and the long side portion of the outdoor heat exchanger 5 in a foreand-aft direction.
[0032] (Compressor)
On the other hand, in a lower portion of the machine chamber M, the compressor 3 having a mass larger than the other components is set on the bottom plate 56 through intermediation of a vibration isolation rubber. The compressor 3 includes, in a sealed container, a compression mechanism for compressing refrigerant by the rotation of compression elements and an electric motor for rotationally driving the compression elements of the compression mechanism. The compressor 3 sucks the refrigerant from the suction pipe 11 and causes the refrigerant gas compressed in the compression mechanism to flow out to the discharge pipe 12.
[0033]
In an upper portion of the machine chamber M, which is positioned at least above the compressor 3, the electrical component unit 20 is set. The electrical component unit 20 accommodates an electronic circuit board having mounted thereon electric and electronic components and the like forming a controller for controlling the operation of the air-conditioning apparatus 100 in conjunction with a controller of the indoor unit 101.
[0034] (Outdoor Refrigerant Pipe)
The outdoor refrigerant pipe 8 is arranged so as to be routed in a space of the machine chamber M excluding the compressor 3 positioned in the lower portion and the electrical component unit 20 positioned in the upper portion.
In the outdoor refrigerant pipe 8, the extension pipe connection valves 13a and
1001501974
2016204549 30 Jun 2016
13b are fixed onto a valve base (same as a pipe support member) 54 arranged closely to the machine chamber front panel 52 side in the machine chamber M in the form of being fixed onto the partition plate 50 and the machine chamber side panel 53. Similarly, the service port 14a on the low-pressure side and the service port 14c on the high-pressure side are also arranged in the vicinity of the valve base 54 arranged closely to the machine chamber front panel 52 side so as to be routed from the outdoor refrigerant pipe 8.
Due to the above-mentioned arrangement state, during the on-site work such as installation, repair, or dismantlement, the extension pipe connection valves 13a and 13b and the service ports 14a, 14b, and 14c, with which the hand may be brought into contact, are positioned foremost in a state in which the machine chamber front panel 52 is removed. That is, the on-site work can be performed without being interfered with by the compressor 3 and the outdoor refrigerant pipe 8 accommodated in the machine chamber M.
An indication section 61 is arranged on a surface of the valve base 54 on the machine chamber front panel 52 side to indicate, in addition to the name of refrigerant to be used, a refrigerant class, refrigerant properties, work environment guidelines, and information for access to the work environment guidelines (described separately in detail).
Note that, in the foregoing, the indication section 61 is arranged in a part of the valve base (pipe support member) 54, but the present invention is not limited thereto. The indication section 61 may be arranged directly in a part of the outdoor refrigerant pipe 8 or may be arranged in the vicinity of the part of the valve base 54 or in the vicinity (referred to as periphery in the present invention) of the part (close to the valve base 54) of the outdoor refrigerant pipe 8. That is, in the case where the valve base 54 is formed of (divided into) a plurality of members and each member is small, the indication section 61 may be arranged on the periphery of the members or across the members and the periphery thereof.
1001501974
2016204549 30 Jun 2016 [0035] (On-Site Work)
Subsequently, an example of the on-site work is described by exemplifying installation. First, at least the machine chamber front panel 52 is removed from the housing 2 forming the outer wall of the outdoor unit 102.
Next, one end of the extension pipe 10a and one end of the extension pipe 10b are respectively connected to the flare joints 16a and 16b mounted on the extension pipe connection valves 13a and 13b of the outdoor unit 102 through flare pipes, and the other end of the extension pipe 10a and the other end of the extension pipe 10b are respectively connected to the flare joints 15a and 15b of the indoor unit 101 through flare pipes, to thereby form the refrigerant circuit of the air-conditioning apparatus 100 (which enables the circulation of refrigerant).
Further, in addition to the connection of a power source and a ground, electric wiring work of the indoor unit 101, the outdoor unit 102, and a remote controller (not shown) is also performed so that the air-conditioning apparatus 100 can be operated. [0036] (Replenishment of Refrigerant)
Next, the flare nut (not shown) of the service port 14b of the extension pipe connection valve 13b on the liquid side is removed. A vacuum pump, which is prepared in advance, is connected to the service port 14b through use of a charging hose, and the extension pipes 10a and 10b, the indoor refrigerant pipe 9, and the indoor heat exchanger 7 in the indoor unit 101 are evacuated so that air and moisture in the refrigerant circuit are removed.
The vacuum pump is connected to the service port 14b through intermediation of a pressure gauge (vacuum degree meter), and the evacuation is ended after confirming through the pressure gauge (vacuum degree meter) that a predetermined vacuum degree is reached. Then, the vacuum pump is removed, and the flare nut (not shown) for the service port 14b is mounted again.
[0037]
Next, the extension pipe connection valves 13a and 13b are operated to be
1001501974
2016204549 30 Jun 2016 opened so that the refrigerant sealed in the outdoor unit 102 at a time of shipping is released to the indoor unit 101 and the extension pipes 10a and 10b.
Then, a test operation is performed by operating the remote controller and a switch and the like on the electronic circuit board of the electrical component unit 20. In this case, when the amount of the refrigerant is insufficient depending on the length of the extension pipes 10a and 10b, the flare nut (not shown) of the service port 14b of the extension pipe connection valve 13b is removed, and a refrigerant cylinder is connected to the service port 14b through use of a charging hose so that a predetermined amount of refrigerant is additionally filled into the air-conditioning apparatus 100.
Further, pressure gauges are connected respectively to the service port 14a on the low-pressure side and the service port 14c on the high-pressure side to monitor the operation state of the air-conditioning apparatus 100. When there is no problem in the operation state, the test operation is ended. Then, the pressure gauges are removed, and the flare nuts (not shown) of the service ports 14a and 14c are mounted again.
[0038]
As described above, during the on-site work, the on-site worker touches the extension pipe connection valves 13a and 13b and the service ports 14a, 14b, and 20 14c and turns his/her eyes on the vicinity of the extension pipe connection valves 13a and 13b and the service ports 14a, 14b, and 14c without fail, with the result that the on-site worker also turns his/her eyes on the valve base 54 serving as a fixing base of the extension pipe connection valves 13a and 13b. Accordingly, the on-site worker also turns his/her eyes on the indication section 61 arranged on the surface of the 25 valve base 54 on the machine chamber front panel 52 side without fail.
[0039] (Indication Section)
Fig. 4 to Fig. 8 are front views illustrating the indication section arranged in the air-conditioning apparatus illustrated in Fig. 1 to Fig. 3. Fig. 4 illustrates the case where the refrigerant is R32. Fig. 5 illustrates the case where the refrigerant is R290
1001501974
2016204549 30 Jun 2016 (propane). Fig. 6 illustrates the case where the refrigerant is R717 (ammonia). Fig. 7 and Fig. 8 illustrate the case where indication items in the indication section are modified.
As described above, the outdoor unit 102 has the above-mentioned basic configuration and executes a procedure of the above-mentioned on-site work. The air-conditioning apparatus 100 uses, as the refrigerant flowing through the refrigerant circuit, HFC refrigerant (R32 in this case) having low GWP effective for preventing global warming.
The above-mentioned HFC refrigerant is slightly flammable. Therefore, it is necessary to prepare the work environment that ensures the high safety to the on-site worker and people around the site, that is, the required safety realized by understanding the work environment guidelines in accordance with the degree of flammability even in the case where refrigerant having flammability leaks during the on-site work of the air-conditioning apparatus 100.
Thus, in the outdoor unit 102, the indication section 61 is arranged on the valve base 54 on which the on-site worker turns his/her eyes without fail even after removing the machine chamber front panel 52 during the on-site work.
[0040]
In Fig. 4 to Fig. 6, the indication section 61 indicates (i) a name of refrigerant to be used, (ii) a refrigerant class, (iii) refrigerant properties, (iv) work environment guidelines, and (v) information for access to the work environment guidelines. [0041] (Refrigerant Class)
In Table 1, the refrigerant class of refrigerant is defined by a combination of a mark indicating the degree of toxicity and a mark indicating the degree of flammability. That is, according to ASHRAE 34, the toxicity is classified into lower toxicity (A) and higher toxicity (B), and the flammability is classified into no flame propagation (1), slight flammability (2L), lower flammability (2), and higher flammability (3). Thus, the refrigerant class is classified into eight levels from A1 indicating lower toxicity and no flame propagation to B3 indicating higher toxicity and higher flammability, and for
1001501974
2016204549 30 Jun 2016 example, R32 having lower toxicity and slight flammability is classified as A2L.
Note that, ISO 817 as well as ASHRAE 34 determines the international standard, and the refrigerant class in the present invention is not limited to the class shown in Table 1 (ASHRAE 34 and ISO 817).
[0042] [Table 1]
Refrigerant type Refrigerant class Refrigerant properties
Toxicity Flammability
R410A A1 Lower toxicity No flame propagation
R32 A2L Lower toxicity Slight flammability
HFO-1234yf A2L Lower toxicity Slight flammability
HFO-1234ze A2L Lower toxicity Slight flammability
R290 (Propane) A3 Lower toxicity Higher flammability
R1270 (Propylene) A3 Lower toxicity Higher flammability
R717 (Ammonia) BL2 Higher toxicity Slight flammability
[0043] (Refrigerant Properties)
In Fig. 4 to Fig. 6, the refrigerant properties indicated on the indication section 61 correspond to the above-mentioned refrigerant class and are represented by terms indicating the degree of toxicity and terms indicating the degree of flammability. Thus, for example, in R32, the refrigerant class is indicated as A2L and the refrigerant properties are indicated as lower toxicity and slight flammability.
Accordingly, the refrigerant properties are indicated variously to correspond to the refrigerant class, and hence the levels of the work environment guidelines during the on-site work vary. Specifically, the indication section 61 indicates the need to ensure a work environment at each level for the constraint on fire use, the specification constraint on an electric tool, the need for ventilation or air circulation, and the like.
1001501974
2016204549 30 Jun 2016 [0044] (Work Environment Guidelines)
In Fig. 4 to Fig. 6, as international specification standard names defining the work environment guidelines, IEC 60335-2-40 and ISO 5149 are indicated. That is, the work environment guidelines in accordance with the refrigerant class are internationally defined by ISO 5149 and IEC 60335-2-40 and disclosed, in each country, as guidelines by an authority concerned, an academic society, an industrial association organized by manufacturers of a refrigeration cycle apparatus, or the like. Further, the work environment guidelines may be disclosed also to the manufacturers of a refrigeration cycle apparatus in the form of instructions for installation, a service manual, or the like.
Thus, the work environment guidelines to be indicated on the indication section 61 are not limited to the above-mentioned international specification names and may be the name of the authority concerned, the academic society, the industrial association, or the like.
[0045] (Information for Access to Work Environment Guidelines)
In Fig. 4 to Fig. 6, the indication section 61 indicates, in addition to the international specification numbers (ISO 5149 and IEC 60335-2-40), a QR code 20 (trademark) of a matrix type indicating a site that manages the international specifications as information for access to the contents (details of the work environment guidelines) corresponding to the international specification numbers.
Thus, even in the case where the on-site worker does not carry documents describing the contents (details of the work environment guidelines) during the on-site 25 work, the on-site worker can understand and confirm the contents (details of the work environment guidelines) easily through use of a mobile phone or a smart phone even at the site of the on-site work.
Note that, the information for access to the work environment guidelines is not limited to the QR code (trademark) of a matrix type indicating a site that manages the 30 international specifications, and as described above, the work environment guidelines
1001501974
2016204549 30 Jun 2016 may be defined by the authority concerned, the academic society, the industrial association, or the manufacturers of each country, instead of being defined by the above mentioned international standards. Thus, the information for access to the work environment guidelines may be a URL or a two-dimensional code (PDF417 of a stacked bar code type, a QR code (trademark) of a matrix type, Data Matrix, Mix Code, etc.) of a website corresponding to the name of the authority concerned, the academic society, the industrial association, or the like, instead of the site that manages the international standards.
[0046] (Functions and Effects)
Focusing on the fact that the on-site worker touches the extension pipe connection valves 13a and 13b of the outdoor unit 102 and the vicinity thereof and turns his/her eyes on the vicinity without fail during the on-site work, in the outdoor unit 102 of the air-conditioning apparatus 100, the indication section 61 is arranged on the valve base 54 serving as a fixing base of the extension pipe connection valves 13a and 13b. The indication section 61 indicates, in addition to (i) a name of refrigerant to be used, (ii) a refrigerant class, (iii) refrigerant properties, (iv) work environment guidelines, and (v) information for access to the work environment guidelines.
Thus, although R32, which is HFC refrigerant having slight flammability in spite of low GWP, is used as the refrigerant, measures appropriate for the on-site worker and people around the site can be taken sufficiently even in the case where the refrigerant leaks during the on-site work.
[0047]
Further, as the information for access to the work environment guidelines in accordance with the refrigerant class, a URL or a two-dimensional code of a website of the international specifications, the authority concerned, the academic society, the industrial association, or the manufacturers, capable of accessing the international specifications, guidelines, and manuals, are indicated. Therefore, the on-site worker can understand and confirm the details of the work environment guidelines easily
1001501974
2016204549 30 Jun 2016 through use of a mobile phone or a smart phone even at the site of the on-site work. That is, the work environment for the unexpected refrigerant leakage can be ensured in advance more reliably. Accordingly, the reliability for the unexpected refrigerant leakage is enhanced.
Note that, the indication section 61 is arranged on the valve base 54 in the foregoing, but the present invention is not limited thereto, and the indication section 61 may be arranged at a position close to the extension pipe connection valves 13a and 13b of the outdoor refrigerant pipe 8.
[0048] (Modified Example 1 of Indication)
In Fig. 7, the indication section 61 indicates, as the work environment guidelines, main points of the guidelines instead of the names of the international specifications. That is, specific contents (for fire use, an electric tool, and ventilation and air circulation) required for ensuring the work environment are indicated. Thus, the on-site worker can directly understand cautions in the on-site work in detail at the site of the on-site work.
Note that, in addition to the above-mentioned indication, the work environment guidelines (names of the international specifications) and a QR code (trademark) may be indicated.
[0049] (Modified Example 2 of Indication)
In Fig. 8, the indication section 61 indicates the refrigerant properties by terms in parentheses after the mark indicating the refrigerant class and indicates work environment cautions instead of the work environment guidelines.
Thus, the on-site worker can understand the cautions in the on-site work readily and exactly at the site of the on-site work.
Note that, in addition to the above-mentioned indication, the above-mentioned work environment guidelines (names of the international specifications) and a QR code (trademark) may be indicated.
1001501974
2016204549 30 Jun 2016 [0050] (Modified Example of Indoor Unit)
Fig. 9 is a perspective view illustrating a modified example of the indoor unit forming the air-conditioning apparatus illustrated in Fig. 1 to Fig. 3 in a state in which a part of components (indoor fan, decorative panel, etc.) is seen through.
In Fig. 9, the indoor unit 101 of the air-conditioning apparatus 100 is constructed such that a housing 1 of the indoor unit 101 is concealed in an indoor ceiling (not shown), and a substantially rectangular decorative panel (not shown) is removably set in a lower portion of the indoor unit 101.
The indoor air-sending fan 7f (not shown) having an air inlet on a lower side and a bellmouth (not shown) for introducing air into the indoor air-sending fan 7f are arranged in a substantially central portion inside the housing 1.
[0051] (Indoor Heat Exchanger)
The indoor heat exchanger 7 having a substantially annular shape, which includes indoor heat exchanger portions 7a, 7b, 7c, and 7d arranged respectively in parallel to side surfaces 1 a, 1 b, 1 c, and 1 d of the housing 1, is arranged so as to surround the indoor air-sending fan 7f (not shown), and a drain pan (removed) is set in a lower portion of the indoor heat exchanger 7.
The indoor refrigerant pipe 9 is connected to the indoor heat exchanger portion
7a, and refrigerant supplied from the outdoor unit 102 passes through the indoor heat exchanger portions 7b, 7c, and 7d through the indoor heat exchanger portion 7a and is returned to the outdoor unit 102 through the indoor heat exchanger portion 7a. A refrigeration cycle is executed in this manner.
Thus, the indoor air sent from the indoor air-sending fan 7f and the refrigerant for executing the refrigeration cycle exchange heat so that the indoor air is conditioned (cooled or heated, or dehumidified or humidified). Further, air outlets 31a, 31b, 31c, and 31 d are respectively formed between outer peripheral sides of the indoor heat exchanger portions 7a, 7b, 7c, and 7d and the side surfaces 1a, 1b, 1c, and 1d of the housing 1, and the conditioned indoor air is blown out indoors through
1001501974
2016204549 30 Jun 2016 the air outlets 31 a, 31 b, 31 c, and 31 d.
[0052] (Indication Section)
Further, an indoor valve base (same as a pipe support member) 32 having set thereon the flare joint 15a for connecting the extension pipe 10a on the gas side and the flare joint 15b for connecting the extension pipe 10b on the liquid side is fixed onto the housing 1 at a position between an end surface of the air outlet 31a and an end surface of the air outlet 31 d so as to be opposed to an end surface of the indoor heat exchange portion 7a.
Then, the indication section 61 is arranged on the indoor valve base 32.
With this, the on-site worker touches the flare joints 15a and 15b of the indoor unit 101 and the vicinity thereof and turns his/her eyes on the vicinity of the flare joints 15a and 15b without fail during the on-site work, and hence the indication section 61 arranged on the indoor valve base 32 attracts the attention of the on-site worker without fail in the same way as in the case of the indication section 61 arranged on the valve base 54 having set thereon the extension pipe connection valves 13a and 13b of the outdoor unit 102.
[0053]
Thus, in the same way as in the case of the on-site work in the outdoor unit
102, even in the case where the refrigerant leaks during the on-site work in the indoor unit 101, measures appropriate for the on-site worker and people around the site can be taken sufficiently, and the work environment for the unexpected refrigerant leakage can be ensured in advance more reliably, with the result that the reliability for the unexpected refrigerant leakage is enhanced.
Note that, the indication section 61 is arranged on the indoor valve base 32 in the foregoing, but the present invention is not limited thereto, and the indication section 61 may be arranged on the periphery of (closely to) the flare joints 15a and 15b of the refrigerant pipe. That is, in the case where the indoor valve base 32 is formed of (divided into) a plurality of members and each member is small, the indication section 61 may be arranged on the periphery of the members or across the
1001501974
2016204549 30 Jun 2016 members and the periphery thereof.
Further, the indication section 61 may be arranged on both the outdoor unit 102 and the indoor unit 101 or may be arranged on only the outdoor unit 102.
[0054]
In the foregoing, the outdoor unit 102 and the indoor unit 101 are described by exemplifying the air-conditioning apparatus 100 as the refrigeration cycle apparatus of the present invention, but the present invention is not limited to the air-conditioning apparatus 100. That is, the present invention may be applied to any refrigeration cycle apparatus as long as the refrigeration cycle apparatus includes units (heat source-side unit, load-side unit, etc.) requiring work of connecting the refrigerant pipe and work of filling refrigerant through the service port during the on-site work such as installation, repair, or dismantlement, and as the refrigerant that circulates the refrigerant circuit, the refrigerant having flammability and toxicity is used. For example, the present invention may also be applied to other refrigeration cycle apparatus such as a heat pump hot water supply unit, a refrigerating machine, and a chiller, and the similar functions and effects are obtained. Therefore, measures can be taken appropriately for the unexpected refrigerant leakage.
Reference Signs List [0055] housing 1a side surface 1b side surface 1c side surface 1d side surface 2 housing 3 compressor 4 four-way valve (refrigerant flow switching valve) 5 outdoor heat exchanger 5f outdoor air-sending fan
5m fan motor 6 expansion valve (pressure reducing device) 7 indoor heat exchanger 7a indoor heat exchanger portion 7b indoor heat exchanger portion 7c indoor heat exchanger portion 7d indoor heat exchanger portion 7f indoor air-sending fan 8 outdoor refrigerant pipe 9 indoor refrigerant pipe 10a extension pipe 10b extension pipe 11 suction pipe 12 discharge pipe 13a extension pipe connection valve 13b extension pipe connection valve 14a service port 14b service port 14c
1001501974 service port 15a flare joint 15b flare joint
16a flare joint
16b flare joint
2016204549 30 Jun 2016 electrical component unit 31a air outlet outlet 31 d air outlet chamber front panel chamber side panel
31b air outlet
31c air indoor valve base partition plate 51 fan machine chamber front panel valve base 55 top panel air outlet 58 fan guard fan motor support plate machine bottom plate 57 product name plate 61 indication section apparatus) 101 indoor unit
100 air-conditioning apparatus (refrigeration cycle
102 outdoor unit

Claims (2)

  1. CLAIMS [Claim 1]
    A refrigeration cycle apparatus for executing a refrigeration cycle, comprising:
    a compressor;
    a heat source-side heat exchanger;
    a pressure reducing device;
    a load-side heat exchanger;
    a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service port for supplying the refrigerant;
    a partition plate between a fan chamber and a machine chamber including the compressor and an outdoor refrigerant pipe of the refrigerant pipe; and an indication section that indicates information on fire use during on-site work, the indication section being arranged at a position of the service port, wherein the service port is one of a plurality of service ports located behind a removable panel proximate to each other, the indication section is located behind the removable panel proximate the zu plurality of service ports, forward of the location of the plurality of service ports and the outdoor refrigerant pipe, and the indication section is supported at least on one side by a portion, proximate the removable panel, of the partition plate, and on another side by structure at or near the service port.
  2. [Claim 2]
    A refrigeration cycle apparatus for executing a refrigeration cycle, comprising:
    a compressor;
    a heat source-side heat exchanger;
    30 a pressure reducing device;
    1002604907
    2016204549 24 Jun 2019 a load-side heat exchanger;
    a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service port for supplying the refrigerant;
    a partition plate between a fan chamber and a machine chamber including the compressor and an outdoor refrigerant pipe of the refrigerant pipe; and an indication section that indicates information on a tool used in on-site work, the indication section being arranged at a position of the service port, wherein the service port is one of a plurality of service ports located behind a removable panel proximate to each other, and the indication section is located behind the removable panel proximate the plurality of service ports, forward of the location of the plurality of service ports and the outdoor refrigerant pipe, and the indication section is supported at least on one side by a portion, proximate the removable panel, of the partition plate, and on another side by structure at or near the service port.
    2U [Claim 3]
    A refrigeration cycle apparatus for executing a refrigeration cycle, comprising:
    a compressor;
    a heat source-side heat exchanger;
    a pressure reducing device;
    25 a load-side heat exchanger;
    a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service
    30 port for supplying the refrigerant;
    1002604907
    2016204549 24 Jun 2019 a partition plate between a fan chamber and a machine chamber including the compressor and an outdoor refrigerant pipe ofthe refrigerant pipe; and an indication section that indicates information on ventilation and air circulation during on-site work, the indication section being arranged at a position of the service port, wherein the service port is one of a plurality of service ports located behind a removable panel proximate to each other, and the indication section is located behind the removable panel proximate the plurality of service ports, forward of the location of the plurality of service ports and the outdoor refrigerant pipe, and the indication section is supported at least on one side by a portion, proximate the removable panel, ofthe partition plate, and on another side by structure at or near the service port.
    [Claim 4]
    A refrigeration cycle apparatus for executing a refrigeration cycle, comprising:
    a compressor;
    a heat source-side heat exchanger;
    a pressure reducing device;
    zu a load-side heat exchanger;
    a refrigerant pipe for circulating refrigerant having at least one of a characteristic of flammability and a characteristic of toxicity by coupling the compressor, the heat source-side heat exchanger, the pressure reducing device, and the load-side heat exchanger to each other, the refrigerant pipe including a service 25 port for supplying the refrigerant;
    a partition plate between a fan chamber and a machine chamber including the compressor and an outdoor refrigerant pipe ofthe refrigerant pipe; and an indication section that indicates information for access to a manual used during on-site work, the indication section being arranged at a position of the service 30 port, wherein
    1002604907
    2016204549 24 Jun 2019 the service port is one of a plurality of service ports located behind a removable panel proximate to each other, and the indication section is located behind the removable panel proximate the plurality of service ports, forward of the location of the plurality of service ports and the outdoor refrigerant pipe, and the indication section is supported at least on one side by a portion, proximate the removable panel, of the partition plate, and on another side by structure at or near the service port.
    [Claim 5]
    The refrigeration cycle apparatus of any one of claims 1 to 4, wherein the indication section is substantially forward of the compressor.
    [Claim 6]
    The refrigeration cycle apparatus of any one of claims 1 to 6, wherein the indication section indicates a refrigerant name, a refrigerant class, and refrigerant properties, in addition to the information.
AU2016204549A 2013-04-08 2016-06-30 Refrigeration cycle apparatus Active AU2016204549B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2016204549A AU2016204549B2 (en) 2013-04-08 2016-06-30 Refrigeration cycle apparatus

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2013080788A JP5697710B2 (en) 2013-04-08 2013-04-08 Refrigeration cycle equipment
JP2013-080788 2013-04-08
AU2014252016A AU2014252016B2 (en) 2013-04-08 2014-02-04 Refrigeration cycle apparatus
PCT/JP2014/052512 WO2014167887A1 (en) 2013-04-08 2014-02-04 Refrigeration cycle device
AU2016204549A AU2016204549B2 (en) 2013-04-08 2016-06-30 Refrigeration cycle apparatus

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU2014252016A Division AU2014252016B2 (en) 2013-04-08 2014-02-04 Refrigeration cycle apparatus

Publications (2)

Publication Number Publication Date
AU2016204549A1 AU2016204549A1 (en) 2016-07-21
AU2016204549B2 true AU2016204549B2 (en) 2019-07-11

Family

ID=51380250

Family Applications (2)

Application Number Title Priority Date Filing Date
AU2014252016A Active AU2014252016B2 (en) 2013-04-08 2014-02-04 Refrigeration cycle apparatus
AU2016204549A Active AU2016204549B2 (en) 2013-04-08 2016-06-30 Refrigeration cycle apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AU2014252016A Active AU2014252016B2 (en) 2013-04-08 2014-02-04 Refrigeration cycle apparatus

Country Status (9)

Country Link
US (1) US20150338136A1 (en)
EP (1) EP2985550A4 (en)
JP (1) JP5697710B2 (en)
CN (3) CN106766433A (en)
AU (2) AU2014252016B2 (en)
BR (1) BR112015019136B1 (en)
MX (1) MX2015010652A (en)
SG (2) SG10201700661SA (en)
WO (1) WO2014167887A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5697710B2 (en) * 2013-04-08 2015-04-08 三菱電機株式会社 Refrigeration cycle equipment
JP6565273B2 (en) * 2015-03-31 2019-08-28 ダイキン工業株式会社 Refrigeration equipment
JP6691739B2 (en) * 2015-03-31 2020-05-13 ダイキン工業株式会社 Construction check system
US11274845B2 (en) 2017-03-31 2022-03-15 Daikin Industries, Ltd. Method of searching for refrigerant leak location
CN108954666A (en) * 2018-08-21 2018-12-07 珠海格力电器股份有限公司 A kind of unit, isolating device and coolant leakage processing method, device
CN117120779B (en) * 2021-03-31 2024-04-12 大金工业株式会社 Air conditioner
DE102022123440A1 (en) 2022-09-14 2024-03-14 Vaillant Gmbh Service connection for a heat pump housing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10311629A (en) * 1997-05-13 1998-11-24 Sanyo Electric Co Ltd Cooling device
US6053005A (en) * 1999-02-12 2000-04-25 Boitnott; Gregory J. Method of and kit for protecting the integrity of refrigeration systems
US6644044B2 (en) * 2000-07-20 2003-11-11 Bsh Bosch Und Siemens Hausgeraete Gmbh Refrigerator, marking system, and method for marking
JP2008040652A (en) * 2006-08-03 2008-02-21 Matsushita Electric Ind Co Ltd Automatic vending machine

Family Cites Families (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US361307A (en) * 1887-04-19 Phineas p
US5878810A (en) * 1990-11-28 1999-03-09 Kabushiki Kaisha Toshiba Air-conditioning apparatus
JP2922002B2 (en) * 1991-02-20 1999-07-19 株式会社東芝 Air conditioner
JPH06273006A (en) * 1993-03-17 1994-09-30 Hitachi Ltd Refrigerating air conditioning apparatus and replenishing exchange method of refrigerant and refrigerating machine oil thereof
JPH06273007A (en) * 1993-03-25 1994-09-30 Hitachi Ltd Retrofit working method of air conditioning apparatus
JP3212193B2 (en) * 1993-08-25 2001-09-25 東芝キヤリア株式会社 Outdoor unit of air conditioner
US5628200A (en) * 1995-01-12 1997-05-13 Wallace Heating & Air Conditioning, Inc. Heat pump system with selective space cooling
JPH08200897A (en) * 1995-01-30 1996-08-06 Sanyo Electric Co Ltd Non-azeotropic mixing refrigerant filling apparatus
JPH10300249A (en) * 1997-04-25 1998-11-13 Hitachi Ltd Refrigerating cycle apparatus
JP3280295B2 (en) * 1997-11-14 2002-04-30 シャープ株式会社 Water removal system and water removal method for separation type air conditioner
JPH11230648A (en) * 1998-02-13 1999-08-27 Matsushita Electric Ind Co Ltd Refrigerant leakage alarm for freezing apparatus using combustible refrigerant
JP2000028212A (en) * 1998-07-14 2000-01-28 Matsushita Electric Ind Co Ltd Refrigerating cycle device
JP3168193B2 (en) * 1999-04-01 2001-05-21 松下電器産業株式会社 Replacement gas recovery container used for construction of air conditioners
KR20020067525A (en) * 2000-09-26 2002-08-22 다이킨 고교 가부시키가이샤 Air conditioner
US20050194083A1 (en) * 2000-11-24 2005-09-08 Steven Barnes System for labeling refrigerant storage tanks
TW471618U (en) * 2001-04-26 2002-01-01 Rung-Ji Chen Automatic monitoring circuit device for all heat exchange media in air-conditioning system with chiller
JP2003233319A (en) * 2002-02-12 2003-08-22 Mitsubishi Electric Corp Display label of refrigerator-air conditioner and refrigerator-air conditioner
JP2005158041A (en) * 2003-10-29 2005-06-16 Sho Takeuchi Reminder device and reminder system
JP2006162094A (en) * 2004-12-02 2006-06-22 Fujitsu General Ltd Outdoor machine of air conditioner
JP4016990B2 (en) * 2005-02-16 2007-12-05 ダイキン工業株式会社 Assembling method of refrigeration equipment
JP2006258385A (en) * 2005-03-17 2006-09-28 Fujitsu General Ltd Air conditioner
DE102005016050A1 (en) * 2005-04-07 2006-10-12 Infineon Technologies Ag Semiconductor memory error detection device for use in motor vehicle electronics, has detecting unit that is designed for detecting error measure of memory when test parity value does not correspond to reference parity
US20070163295A1 (en) * 2006-01-18 2007-07-19 Martin Lendell Sr Air treatment systems
US20090037142A1 (en) * 2007-07-30 2009-02-05 Lawrence Kates Portable method and apparatus for monitoring refrigerant-cycle systems
JP2009198154A (en) * 2007-10-23 2009-09-03 Daikin Ind Ltd Fluid sensor, refrigerant leakage detection device, refrigeration device, and refrigerant leakage detection method
JP5188572B2 (en) * 2008-04-30 2013-04-24 三菱電機株式会社 Air conditioner
JP2010071530A (en) * 2008-09-17 2010-04-02 Daikin Ind Ltd Air conditioner
CN102159899B (en) * 2008-09-17 2013-09-04 大金工业株式会社 Outdoor unit of air conditioner
JP2010112667A (en) * 2008-11-10 2010-05-20 Mitsubishi Electric Corp Air conditioner
JP2011094871A (en) * 2009-10-29 2011-05-12 Mitsubishi Electric Corp Refrigerating air conditioning device and installation method of the refrigerating air conditioning device
US20110112814A1 (en) * 2009-11-11 2011-05-12 Emerson Retail Services, Inc. Refrigerant leak detection system and method
JP5849396B2 (en) * 2011-01-31 2016-01-27 株式会社富士通ゼネラル Air conditioner outdoor unit
JP5542722B2 (en) * 2011-03-15 2014-07-09 三菱電機株式会社 Refrigeration equipment
EP2674896B1 (en) * 2011-05-17 2015-11-18 Panasonic Intellectual Property Management Co., Ltd. Character string extraction method and character string extraction device
JP5738781B2 (en) * 2012-02-10 2015-06-24 ダイキン工業株式会社 Air conditioner
JP5697710B2 (en) * 2013-04-08 2015-04-08 三菱電機株式会社 Refrigeration cycle equipment
JP5811134B2 (en) * 2013-04-30 2015-11-11 ダイキン工業株式会社 Air conditioner indoor unit
KR101525849B1 (en) * 2013-07-16 2015-06-05 삼성전자 주식회사 Compressor and air conditioning apparatus using the same
JP5984779B2 (en) * 2013-07-24 2016-09-06 三菱電機株式会社 Outdoor unit and air conditioner
JP5968281B2 (en) * 2013-08-07 2016-08-10 三菱電機株式会社 Outdoor unit and air conditioner
JP6053636B2 (en) * 2013-08-07 2016-12-27 三菱電機株式会社 Outdoor unit for air conditioner and method for manufacturing outdoor unit for air conditioner
JP5665937B1 (en) * 2013-09-13 2015-02-04 三菱電機株式会社 Refrigeration cycle equipment
CN106461279B (en) * 2014-05-12 2019-01-18 松下知识产权经营株式会社 Refrigerating circulatory device
JP6481818B2 (en) * 2015-03-31 2019-03-13 株式会社富士通ゼネラル Embedded ceiling air conditioner
US10443901B2 (en) * 2015-04-30 2019-10-15 Daikin Industries, Ltd. Indoor unit of air conditioner
KR101872567B1 (en) * 2015-08-25 2018-06-28 엘지전자 주식회사 An outdoor unit for a an air conditioner
US10311629B2 (en) * 2016-01-22 2019-06-04 Intel Corporation Level of detail selection during ray tracing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10311629A (en) * 1997-05-13 1998-11-24 Sanyo Electric Co Ltd Cooling device
US6053005A (en) * 1999-02-12 2000-04-25 Boitnott; Gregory J. Method of and kit for protecting the integrity of refrigeration systems
US6644044B2 (en) * 2000-07-20 2003-11-11 Bsh Bosch Und Siemens Hausgeraete Gmbh Refrigerator, marking system, and method for marking
JP2008040652A (en) * 2006-08-03 2008-02-21 Matsushita Electric Ind Co Ltd Automatic vending machine

Also Published As

Publication number Publication date
US20150338136A1 (en) 2015-11-26
CN104101142A (en) 2014-10-15
AU2016204549A1 (en) 2016-07-21
WO2014167887A1 (en) 2014-10-16
CN106766433A (en) 2017-05-31
MX2015010652A (en) 2015-12-15
BR112015019136B1 (en) 2022-04-19
SG10201700661SA (en) 2017-03-30
CN203798045U (en) 2014-08-27
CN104101142B (en) 2017-01-11
EP2985550A4 (en) 2016-11-16
AU2014252016B2 (en) 2016-04-14
AU2014252016A1 (en) 2015-08-13
EP2985550A1 (en) 2016-02-17
BR112015019136A2 (en) 2017-07-18
SG11201505223SA (en) 2015-10-29
JP5697710B2 (en) 2015-04-08
JP2014202451A (en) 2014-10-27

Similar Documents

Publication Publication Date Title
AU2016204549B2 (en) Refrigeration cycle apparatus
US20180119998A1 (en) Refrigeration cycle apparatus
JP6124818B2 (en) Air conditioner
JP2020024085A (en) Refrigerant amount setting method for air conditioner
AU2017201891C1 (en) Air-conditioning apparatus
EP2647930A1 (en) Part replacement method for refrigeration cycle device
JP6117967B2 (en) Air conditioner
JP5918415B2 (en) Air conditioner
WO2012137260A1 (en) Refrigerant recovery method for refrigeration cycle device and refrigeration cycle device
AU2014345151B2 (en) Refrigeration cycle apparatus, method of manufacturing the same, and method of installing the same
JP6289702B2 (en) Air conditioner

Legal Events

Date Code Title Description
FGA Letters patent sealed or granted (standard patent)