EP3290825B1 - Appareil de réfrigération - Google Patents
Appareil de réfrigération Download PDFInfo
- Publication number
- EP3290825B1 EP3290825B1 EP16786103.8A EP16786103A EP3290825B1 EP 3290825 B1 EP3290825 B1 EP 3290825B1 EP 16786103 A EP16786103 A EP 16786103A EP 3290825 B1 EP3290825 B1 EP 3290825B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- expansion valve
- pipe
- degree
- heat exchanger
- 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
Links
- 238000005057 refrigeration Methods 0.000 title claims description 40
- 239000003507 refrigerant Substances 0.000 claims description 369
- 238000002347 injection Methods 0.000 claims description 172
- 239000007924 injection Substances 0.000 claims description 172
- 238000004781 supercooling Methods 0.000 claims description 152
- 239000007788 liquid Substances 0.000 claims description 120
- 239000003921 oil Substances 0.000 claims description 103
- 230000008014 freezing Effects 0.000 claims description 34
- 238000007710 freezing Methods 0.000 claims description 34
- 239000010721 machine oil Substances 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 27
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 230000007423 decrease Effects 0.000 description 11
- 238000010257 thawing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
-
- 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
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2509—Economiser valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2101—Temperatures in a bypass
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
Definitions
- the injection refrigerant temperature sensor (82) is installed on a portion of the second main injection pipe (54n) between the junction (P6) and the intermediate expansion valves (36a, 36b, 36c) to sense the temperature of a refrigerant at its installation site as the temperature of a refrigerant flowing through a portion of the second main injection pipe (54n) between the junction (P6) and the intermediate expansion valves (36a, 36b, 36c) (hereinafter referred to as the injection refrigerant temperature (Tinj)).
- the refrigerant circuit (20) performs a refrigeration cycle in which the heat-source-side heat exchanger (33) functions as a condenser, the supercooling heat exchanger (34) functions as a supercooler, and the utilization-side heat exchangers (61) function as evaporators.
- a refrigerant discharged from the compressors (31a, 31b, 31c) passes through the oil separator (41) in the discharge refrigerant pipe (51), then flows through the four-way valve (32) into the heat-source-side heat exchanger (33), dissipates heat to the heat-source-side air (e.g., outdoor air) in the heat-source-side heat exchanger (33), and condenses.
- the heat-source-side air e.g., outdoor air
- the flow rate (injection amount) of the refrigerant flowing into the intermediate port of the compressor (31a, 31b, 31c) can be adjusted by adjusting the degree of opening of the intermediate expansion valve (36a, 36b, 36c).
- the degree of opening of the intermediate expansion valve (36a, 36b, 36c) can be adjusted.
- the degree of opening of the heat-source-side expansion valve (38) is adjusted such that the degree of superheat of the refrigerant at the outlet of the heat-source-side heat exchanger (33) is equal to a predetermined target degree of superheat.
- the oil return expansion valve (42) is placed in a fully-closed state.
- the utilization-side open/close valve (62) is placed in the open state, and the utilization-side expansion valve (63) is placed in the fully-open state.
- the refrigerant discharged from the compressors (31a, 31b, 31c) passes through the oil separator (41) in the discharge refrigerant pipe (51), then passes through the four-way valve (32) and the gas stop valve (V2) in this order, and flows into the gas interconnecting pipe (15).
- the refrigerant that has flowed into the gas interconnecting pipe (15) flows into the utilization-side gaseous refrigerant pipes (72) of the utilization-side units (12).
- the refrigerant that has flowed into the utilization-side gaseous refrigerant pipe (72) flows into the utilization-side heat exchanger (61), and dissipates heat in the utilization-side heat exchanger (61) to condense.
- the refrigerant that has flowed into the liquid interconnecting pipe (14) flows through the liquid stop valve (VI) into the third heat-source-side liquid pipe (53c).
- the refrigerant that has flowed into the third heat-source-side liquid pipe (53c) flows into the first connection pipe (55), passes through the third check valve (CV3) in the first connection pipe (55), and flows into the first heat-source-side liquid pipe (53a).
- the refrigerant that has flowed into the first heat-source-side liquid pipe (53a) passes through the receiver (37), the second heat-source-side liquid pipe (53b), the first channels (34a) of the supercooling heat exchanger (34) in this order, and flows into the third heat-source-side liquid pipe (53c).
- the refrigerant that has flowed out of the heat-source-side heat exchanger (33) passes through the four-way valve (32) and the suction refrigerant pipe (52) in this order, and is sucked into the suction ports of the compressors (31a, 31b, 31c).
- the controller (13) performs a first degree-of-opening adjusting operation (steps (ST11-ST13)) every time a predetermined operating time elapses in the cooling mode.
- the controller (13) adjusts the degree of opening of the intermediate expansion valve (36a, 36b, 36c) such that the discharged refrigerant temperature (Td) is below a predetermined higher discharged refrigerant temperature threshold (Tdth).
- the controller (13) performs the first degree-of-opening adjusting operation for each of the first through third intermediate expansion valves (36a-36c). For example, the controller (13) performs the first degree-of-opening adjusting operation for the first intermediate expansion valve (36a) associated with the first compressor (31a), based on the value sensed by the first discharged refrigerant temperature sensor (81a). In the first degree-of-opening adjusting operation, processes indicated below are performed.
- the degree of opening of the intermediate expansion valve (36a, 36b, 36c) is adjusted such that the degree of superheat of the refrigerant discharged from the compressor (31a, 31b, 31c) is equal to the predetermined target degree of superheat, the flow rate (injection amount) of the refrigerant flowing into the intermediate port of the compressor (31a, 31b, 31c) can be appropriately adjusted.
- the controller (13) performs the process shown in FIG. 5 (steps (ST20-ST24)) every time a predetermined operating time elapses in the cooling mode.
- the controller (13) determines whether or not the injection refrigerant temperature (Tinj) is above the freezing temperature threshold (Tfth). If the injection refrigerant temperature (Tinj) is above the freezing temperature threshold (Tfth), the process proceeds to step (ST22). If not, the process proceeds to step (ST23).
- the controller (13) reduces the degree of opening of the supercooling expansion valve (35) by a predetermined amount (step (ST22)). This can reduce the pressure of the refrigerant flowing from the supercooling expansion valve (35) into the second channels (34b) of the supercooling heat exchanger (34) in the injection pipe (54). As a result, the degree of subcooling of the refrigerant in the supercooling heat exchanger (34) can be increased.
- step (ST22) If, in step (ST22), the supercooling expansion valve (35) has a minimum degree of opening (e.g., a fully-closed state), the controller (13) keeps the degree of opening of the supercooling expansion valve (35) at the minimum degree of opening. If, in steps (ST23, ST24), the supercooling expansion valve (35) has a maximum degree of opening (e.g., a fully-open state), the controller (13) keeps the degree of opening of the supercooling expansion valve (35) at the maximum degree of opening.
- a minimum degree of opening e.g., a fully-closed state
- the controller (13) keeps the degree of opening of the supercooling expansion valve (35) at the maximum degree of opening.
- the controller (13) intermittently places the oil return expansion valve (42) in an open state, so that the flow rate of refrigerating machine oil passing through the oil return pipe (57) within a predetermined unit period of time (i.e., the oil return amount) increases by a predetermined rate (step (ST33)).
- the controller (13) intermittently places the oil return expansion valve (42) in the open state so that the period of time during which the oil return expansion valve (42) is placed in the open state within a predetermined period of time increases.
- the controller (13) may increase the degree of opening of the open oil return expansion valve (42).
- Increasing the flow rate of the refrigerating machine oil (relatively high-temperature refrigerating machine oil) passing through the oil return pipe (57) within a predetermined unit period of time can increase the temperature of the refrigerant flowing through the portion of the injection pipe (54) between the junction (P6) of the injection pipe (54) and the oil return pipe (57) and the intermediate expansion valves (36a, 36b, 36c) (in this example, the injection refrigerant temperature (Tinj)).
- step (ST33) If, in step (ST33), the flow rate of the refrigerating machine oil passing through the oil return pipe (57) within a predetermined unit period of time (i.e., the oil return amount) is highest, the controller (13) controls the opening/closing of the oil return expansion valve (42) to keep the oil return amount at the highest flow rate. Specifically, if a period of time during which the oil return expansion valve (42) is in the open state within a predetermined unit period of time is longest (e.g., equal to the unit period of time), the controller (13) controls the opening/closing of the oil return expansion valve (42) to keep the period of time during which the valve is in the open state at the longest period of time.
- the controller (13) may control the opening/closing of the oil return expansion valve (42) to keep the degree of opening of the open oil return expansion valve (42) at the highest degree of opening.
- the above-mentioned refrigeration apparatus is useful as a refrigeration apparatus which cools an internal space, etc.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Claims (6)
- Appareil de réfrigération comprenant :un circuit de réfrigérant (20) incluant un compresseur (31a, 31b, 31c), un échangeur de chaleur côté source de chaleur (33), un échangeur de chaleur côté utilisation (61), un tube de réfrigérant liquide (50) reliant une extrémité liquide de l'échangeur de chaleur côté source de chaleur (33) à une extrémité liquide de l'échangeur de chaleur côté utilisation (61), un tube d'injection (54) reliant une partie intermédiaire (P1) du tube de réfrigérant liquide (50) à un orifice intermédiaire du compresseur (31a, 31b, 31c), un échangeur de chaleur de surrefroidissement (34) relié au tube de réfrigérant liquide (50) et au tube d'injection (54) pour échanger de la chaleur entre un réfrigérant s'écoulant à travers le tube de réfrigérant liquide (50) et un réfrigérant s'écoulant à travers le tube d'injection (54), une soupape de détente de surrefroidissement (35) prévue sur une partie du tube d'injection (54) entre la partie intermédiaire (P1) du tube de réfrigérant liquide (50) et l'échangeur de chaleur de surrefroidissement (34), et une soupape de détente intermédiaire (36a, 36b, 36c) prévue sur une partie du tube d'injection (54) entre l'échangeur de chaleur de surrefroidissement (34) et l'orifice intermédiaire du compresseur (31a, 31b, 31c) ; comprenantune section de commande (13) configurée pour effectuer des première et deuxième opérations de réglage de degré d'ouverture dans un mode de refroidissement dans lequel le circuit de réfrigérant (20) effectue un cycle de réfrigération dans lequel l'échangeur de chaleur côté source de chaleur (33) fonctionne comme un condensateur, l'échangeur de chaleur de surrefroidissement (34) fonctionne comme un surrefroidisseur et l'échangeur de chaleur côté utilisation (61) fonctionne comme un évaporateur, un degré d'ouverture de la soupape de détente intermédiaire (36a, 36b, 36c) étant réglée dans la première opération de réglage de degré d'ouverture de telle sorte qu'une température (Td) d'un réfrigérant évacué depuis le compresseur (31a, 31b, 31c) est inférieure à un seuil supérieur prédéterminé de température de réfrigérant évacué (Tdth),caractérisé parun degré d'ouverture de la soupape de détente de surrefroidissement (35) étant réglé dans la deuxième opération de réglage de degré d'ouverture de telle sorte qu'une température d'un réfrigérant s'écoulant à travers une partie du tube d'injection (54) entre l'échangeur de chaleur de surrefroidissement (34) et la soupape de détente intermédiaire (36a, 36b, 36c) est supérieure à un seuil prédéterminé de température de congélation (Tfth).
- Appareil de réfrigération selon la revendication 1, dans lequel
si la température (Td) du réfrigérant évacué depuis le compresseur (31a, 31b, 31c) est inférieure au seuil supérieur de température de réfrigérant évacué (Tdth), la section de commande (13) effectue la deuxième opération de réglage de degré d'ouverture, et si la température (Td) du réfrigérant évacué depuis le compresseur (31a, 31b, 31c) n'est pas inférieure au seuil supérieur de température de réfrigérant évacué (Tdth), la section de commande (13) augmente le degré d'ouverture de la soupape de détection de surrefroidissement (35) - Appareil de réfrigération selon la revendication 1 ou 2, dans lequel
dans la première opération de réglage de degré d'ouverture, si la température (Td) du réfrigérant évacué depuis le compresseur (31a, 1b, 31c) est inférieure au seuil supérieur de température de réfrigérant évacué (Tdth), la section de commande (13) règle le degré d'ouverture de la soupape de détente intermédiaire (36a, 36b, 36c) de telle sorte qu'un degré de surchauffe du réfrigérant évacué depuis le compresseur (31a, 31b, 31c) est égale à un degré cible prédéterminé de surchauffe, et si la température (Td) du réfrigérant évacué depuis le compresseur (31a, 31b, 31c) n'est pas inférieure au seuil supérieur de température de réfrigérant évacué (Tdth), la section de commande (13) augmente le degré d'ouverture de la soupape de détente intermédiaire (36a, 36b, 36c). - Appareil de réfrigération selon l'une quelconque des revendications 1-3, dans lequel
dans la deuxième opération de réglage de degré d'ouverture, si la température du réfrigérant s'écoulant à travers la partie du tube d'injection (54) entre l'échangeur de chaleur de surrefroidissement (34) et la soupape de détente intermédiaire (36a, 36b, 36c) est supérieure au seuil de température de congélation (Tfth), la section de commande (13) réduit le degré d'ouverture de la soupape de détente de surrefroidissement (35), et si la température du réfrigérant s'écoulant à travers la partie du tube d'injection (54) entre l'échangeur de chaleur de surrefroidissement (34) et la soupape de détente intermédiaire (36a, 36b, 36c) n'est pas supérieure au seuil de température de congélation (Tfth), la section de commande (13) augmente le degré d'ouverture de la soupape de détente de surrefroidissement (35). - Appareil de réfrigération selon l'une quelconque des revendications 1-4, dans lequel
le circuit de réfrigérant (20) inclut un séparateur d'huile (41) configuré pour séparer l'huile pour machine de réfrigération du réfrigérant évacué depuis le compresseur (31a, 31b, 31c), un tube de retour d'huile (57) présentant deux extrémités respectivement reliées au séparateur d'huile (41) et une partie intermédiaire du tube d'injection (54) entre l'échangeur de chaleur de surrefroidissement (34) et la soupape de détente intermédiaire (36a, 36b, 36c), et une soupape de détente de retour d'huile (42) prévue sur le tube de retour d'huile (57), et
dans le mode de refroidissement, la section de commande (13) effectue une troisième opération de réglage de degré d'ouverture dans laquelle un degré d'ouverture de la soupape de détente de retour d'huile (42) est réglé de telle sorte qu'une température d'un réfrigérant s'écoulant à travers une partie du tube d'injection (54) entre une jonction (P6) du tube d'injection (54) et du tube de retour d'huile (57) et la soupape de détente intermédiaire (36a, 36b, 36c) est supérieure au seuil de température de congélation (Tfth). - Appareil de réfrigération selon la revendication 5, dans lequel
dans la troisième opération de réglage de degré d'ouverture, si la température du réfrigérant s'écoulant à travers la partie du tube d'injection (54) entre la jonction (P6) du tube d'injection (54) et du tube de retour d'huile (57) et la soupape de détente intermédiaire (36a, 36b, 36c) est supérieure au seuil de température de congélation (Tfth), la section de commande (13) place de façon intermittente la soupape de détente de retour d'huile (42) dans un état ouvert de telle sorte qu'un débit d'huile pour machine de réfrigération passant à travers le tube de retour d'huile (57) au sein d'une période unitaire prédéterminée est égal à un débit prédéterminé, et si la température du réfrigérant s'écoulant à travers la partie du tube d'injection (54) entre la jonction (P6) du tube d'injection (54) et du tube de retour d'huile (57) et la soupape de détente intermédiaire (36a, 36b, 36c) n'est pas supérieure au seuil de température de congélation (Tfth), la section de commande (13) place de façon intermittente la soupape de détente de retour d'huile (42) dans l'état ouvert de telle sorte que le débit de l'huile pour machine de réfrigération passant à travers le tube de retour d'huile (57) au sein de la période unitaire prédéterminée augmente.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015092150A JP5971377B1 (ja) | 2015-04-28 | 2015-04-28 | 冷凍装置 |
PCT/JP2016/001846 WO2016174822A1 (fr) | 2015-04-28 | 2016-03-30 | Appareil de réfrigération |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3290825A1 EP3290825A1 (fr) | 2018-03-07 |
EP3290825A4 EP3290825A4 (fr) | 2018-12-19 |
EP3290825B1 true EP3290825B1 (fr) | 2021-05-19 |
Family
ID=56701670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16786103.8A Active EP3290825B1 (fr) | 2015-04-28 | 2016-03-30 | Appareil de réfrigération |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3290825B1 (fr) |
JP (1) | JP5971377B1 (fr) |
ES (1) | ES2879920T3 (fr) |
WO (1) | WO2016174822A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6142896B2 (ja) * | 2015-04-28 | 2017-06-07 | ダイキン工業株式会社 | 冷凍装置 |
JP6319388B2 (ja) * | 2016-09-12 | 2018-05-09 | ダイキン工業株式会社 | 冷凍装置 |
JP6390688B2 (ja) * | 2016-11-24 | 2018-09-19 | ダイキン工業株式会社 | 冷凍装置 |
JP6540666B2 (ja) * | 2016-11-24 | 2019-07-10 | ダイキン工業株式会社 | 冷凍装置 |
CN109373634B (zh) * | 2018-10-29 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | 一种回油控制方法、装置及空调器 |
CN110173934B (zh) * | 2019-05-29 | 2021-02-19 | 南京天加环境科技有限公司 | 一种燃气热泵多联机过冷结构的控制方法 |
IT202200005252A1 (it) * | 2022-03-17 | 2023-09-17 | General Gas S R L | Metodo di controllo di un impianto di refrigerazione con sottoraffreddamento meccanico e relativo impianto di refrigerazione |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007127302A (ja) * | 2005-11-01 | 2007-05-24 | Daikin Ind Ltd | 冷凍装置 |
JP4211847B2 (ja) * | 2007-01-17 | 2009-01-21 | ダイキン工業株式会社 | 冷凍装置 |
JP5062039B2 (ja) * | 2008-05-27 | 2012-10-31 | ダイキン工業株式会社 | 冷凍装置 |
WO2011064928A1 (fr) * | 2009-11-25 | 2011-06-03 | ダイキン工業株式会社 | Dispositif de réfrigération pour contenant |
JP2012137207A (ja) * | 2010-12-24 | 2012-07-19 | Mitsubishi Electric Corp | 冷凍サイクル装置 |
JP5774210B2 (ja) * | 2012-04-27 | 2015-09-09 | 三菱電機株式会社 | 空気調和装置 |
JP2014016079A (ja) * | 2012-07-06 | 2014-01-30 | Daikin Ind Ltd | ヒートポンプ |
JP6017048B2 (ja) * | 2013-08-30 | 2016-10-26 | 三菱電機株式会社 | 空気調和装置 |
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2015
- 2015-04-28 JP JP2015092150A patent/JP5971377B1/ja active Active
-
2016
- 2016-03-30 EP EP16786103.8A patent/EP3290825B1/fr active Active
- 2016-03-30 ES ES16786103T patent/ES2879920T3/es active Active
- 2016-03-30 WO PCT/JP2016/001846 patent/WO2016174822A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
ES2879920T3 (es) | 2021-11-23 |
JP5971377B1 (ja) | 2016-08-17 |
JP2016205792A (ja) | 2016-12-08 |
EP3290825A4 (fr) | 2018-12-19 |
EP3290825A1 (fr) | 2018-03-07 |
WO2016174822A1 (fr) | 2016-11-03 |
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