Refrigeration equipment
AssigneeDaikin Industries, Ltd.
InventorsMasaaki Takegami, Takeo Ueno, Kenji Tanimoto
Life of this patent
Estimating the term…
Abstract
In a refrigerating apparatus comprising a plurality of application-side heat exchangers (41), (45, 51) for air-conditioning and for cold-storage/freezing, it is configured so as to be capable of corresponding to various types of operation patterns when a compression mechanism (2) is configured by two compressors (2A, 2B). In order to continue operation even if one compressor is broken, a switching mechanism such as a four-way selector valve (3C) is provided on the suction side of the two compressors (2A, 2B), so that a plurality of operation patterns can be performed in a predetermined operation mode.
Claims6
A refrigerating apparatus in which expansion mechanisms (46, 52) and application-side heat exchangers (45, 51) in a first channel and an expansion mechanism (42) and an application-side heat exchanger (41) in a second channel are connected in parallel to a compression mechanism (2) and a heat-source side heat exchanger (4), the compression mechanism (2) is configured by a first compressor (2A) and a second compressor (2B) and a plurality of operation modes can be set,
- wherein the compression mechanism (2) is configured so as to be capable of being switched between at least two operation patterns, in a predetermined operation mode, among a first pattern of driving the first compressor (2A) and the second compressor (2B), a second pattern of driving only the first compressor (2A) and a third pattern of driving only the second compressor (2B).
A refrigerating apparatus in which expansion mechanisms (46, 52) and application-side heat exchangers (45, 51) in a first channel and an expansion mechanism (42) and an application-side heat exchanger (41) in a second channel are connected in parallel to a compression mechanism (2) and a heat-source side heat exchanger (4), the compression mechanism (2) is configured by a first compressor (2A) and a second compressor (2B) and a plurality of operation modes can be set,
- wherein the compression mechanism (2) is configured so as to be capable of being switched between a first pattern of driving both the first compressor (2A) and the second compressor (2B), a second pattern of driving only the first compressor (2A) and a third pattern of driving only the second compressor (2B) in a predetermined operation mode.
A refrigerating apparatus that expansion mechanisms (46, 52) and application-side heat exchangers (45, 51) in a first channel and an expansion mechanism (42) and an application-side heat exchanger (41) in a second channel are connected in parallel to a compression mechanism (2) and a heat-source side heat exchanger (4), and the compression mechanism (2) is configured by a first compressor (2A) and a second compressor (2B),
- wherein discharge pipes (5a, 5b) of the compressors (2A, 2B) are connected in parallel to a high-pressure gas pipe (8), and the high-pressure gas pipe (8) is connected via directional selector valves (3A, 3B) to high-pressure gas lines (9, 17) in the first and channels,
- a four-way selector valve (3C) which is configured so as to be capable of being switched between a first state in which a first port (P1) communicates with a fourth port (P4) and a second port (P2) communicates with a third port (P3) and a second state in which the first port (P1) communicates with the second port (P2) and the third port (P3) communicates with the fourth port (P4) is provided on the suction side of the compression mechanism (2),
- a low-pressure gas line (15) in the first channel connected to a suction pipe (6a) for the first compressor (2A) is connected to the first port (P1) for the four-way selector valve (3C),
- a suction pipe (6b) for the second compressor (2B) is connected to the second port (P2),
- low-pressure gas lines (17, 9) in the second channel are connected via the directional selector valves (3A, 3B) to the third port (P3), and
- a high-pressure side pipe (28a) for a refrigerant circuit (1E) is connected to the fourth port (P4).
A refrigerating apparatus that expansion mechanisms (46, 52) and application-side heat exchangers (45, 51) in a first channel and an expansion mechanism (42) and an application-side heat exchanger (41) in a second channel are connected in parallel to a compression mechanism (2) and a heat-source side heat exchanger (4), and the compression mechanism (2) is configured by a first compressor (2A) and a second compressor (2B),
- wherein discharge pipes (5a, 5b) for the compressors (2A, 2B) are connected in parallel to a high-pressure gas pipe (8), and the high-pressure gas pipe (8) is connected via directional selector valves (3A, 3B) to high-pressure gas lines (9, 17) in the first and second channels,
- a suction pipe (6a) for the first compressor (2A) is connected to a low-pressure gas line (15) in the first channel,
- a suction pipe (6b) for the second compressor (2B) is connected via the directional selector valves (3A, 3B) to low-pressure gas lines (17, 9) in the second channel,
- the suction pipes (6a, 6b) for the compressors (2A, 2B) are connected with each other by a first communication pipe (22a) and a second communication pipe (22b) provided in parallel,
- the first communication pipe (22a) is provided with a check valve (7) for allowing only a refrigerant flow from the first compressor (2A) side toward the second compressor (2B) side, and
- the second communication pipe (22b) is provided with a check valve (7) for allowing only a refrigerant flow from the second compressor (2B) side toward the first compressor (2A) side and an open/close valve (23) for opening/closing the second communication pipe (22b).
Dependencies are inferred from the claim text.