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公开(公告)号：US20230346139A1
公开(公告)日：2023-11-02
申请号：US18307488
申请日：2023-04-26
申请人： EPTA S.p.A.
IPC分类号： A47F3/04
CPC分类号： A47F3/0447 , A47F2003/046
摘要： A refrigerated display cabinet of vertical or semi-vertical type has a containment structure defining a display compartment and an access opening, a main air inlet mouth and a main air outlet mouth being in communication with the display compartment. A channel connects the main air inlet and outlet mouths to direct a refrigerated air flow towards the main air inlet mouth in the form of an air curtain. The display compartment is divided into an upper area having one or more shelves and a lower area adapted to be loaded with products. One shelf separating the lower and upper areas is a blowing shelf having an internal conduit directing the refrigerated air flow in the display compartment through a secondary air-emitting mouth, a first deflector intercepting the refrigerated air flow which forms the air curtain and a second deflector intercepting the refrigerated air flow emitted by the blowing shelf.
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2.发明公开公开(公告)号：US20240125526A1
公开(公告)日：2024-04-18
申请号：US18482397
申请日：2023-10-06
申请人： EPTA S.p.A.
摘要： A vapour compression refrigeration system has a main refrigerant circuit having a main gas cooler or condenser arranged in a high pressure branch, a first main evaporator arranged in a first low pressure branch, a main compressor fluidically connecting the first low pressure branch to the high pressure branch, and an expansion device connecting the high pressure branch to an intermediate pressure branch. The system has a by-pass branch connecting the high-pressure branch to the intermediate pressure branch and provided with a by-pass valve, a secondary refrigerant circuit having a secondary gas cooler or condenser arranged in a secondary high pressure branch, a secondary evaporator arranged in a secondary low pressure branch, and a secondary expansion device connecting the secondary high pressure branch to the secondary low pressure branch. A rotary pressure exchanger is fluidically connected to the by-pass branch downstream of the by-pass valve and the secondary refrigerant circuit.
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公开(公告)号：US20240074600A1
公开(公告)日：2024-03-07
申请号：US18307499
申请日：2023-04-26
申请人： EPTA S.p.A.
发明人： Federico VISCONTI , Maurizio ORLANDI , Stefano TRABUCCHI , Lionel VASSEUR , Patrick CAZALIS , Laurent NARBAITZ , Alexandre MISKIZAK , Julien GRANOUILLAC
IPC分类号： A47F3/04
CPC分类号： A47F3/0447
摘要： A refrigerated display cabinet has a containment structure defining a product display compartment divided by a shelf into a lower area and an upper area, and an access opening, an air inlet mouth and an air outlet mouth being in communication with the product display compartment. A channel connecting the air inlet and outlet mouths contains an evaporator connected to a refrigeration circuit and a plurality of fans arranged downstream of the evaporator, and is divided into a first group and a second group of fans respectively generating a flow of refrigerated air towards the lower area and a flow of refrigerated air towards the air outlet mouth. A control unit adjusts speed of the first group of fans independently of speed of the second group of fans and flow rate of refrigerated air towards the lower area independently of flow rate of refrigerated air towards the air outlet mouth.
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公开(公告)号：US11231209B2
公开(公告)日：2022-01-25
申请号：US16301231
申请日：2017-05-16
申请人： EPTA S.p.A.
发明人： Paolo Cavalleri , Mario De Bona , Daniele Mazzola
摘要： A refrigeration plant with multiple evaporation levels, operating according to a vapour compression cycle and including a circuit having a high-pressure branch HP, wherein is arranged at least one heat exchanger, and two or more low-pressure branches, each of which operates at a different evaporation level to serve users having different refrigeration requirements. In each of the low-pressure branches the plant comprises an expansion device, at least one evaporator and a compressor group. At least one evaporator of each low-pressure branch is connected directly to the high-pressure branch. At least a first low-pressure branch comprises a liquid separator fluidically connected: to the evaporator outlet to collect the liquid exiting the evaporator when operating in overfeeding conditions; and to the intake of the compressor group. Such liquid separator is fluidically connected to a second low-pressure branch upstream of the expansion device of such second low-pressure branch through a first connection duct.
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公开(公告)号：US20210254864A1
公开(公告)日：2021-08-19
申请号：US17173510
申请日：2021-02-11
申请人： EPTA S.P.A.
摘要： A vapor compression refrigeration system has a main refrigerant circuit having a primary compressor group, a gas cooler or condenser, an expansion device, a liquid receiver, and at least one evaporator. An emergency circulation duct fluidically connects the liquid receiver to the main circuit to allow a flow of refrigerant from the liquid receiver to the gas cooler. An emergency compressor group in the emergency circulation duct is activatable when pressure inside the liquid receiver or in the duct upstream of the emergency compressor group meets or exceeds a predefined emergency pressure threshold. An uninterruptible power supply powers the emergency compressor group and expansion device during a shutdown of the refrigeration system. When pressure inside the liquid receiver or in the duct upstream of the emergency compressor group equals or exceeds the predefined emergency pressure threshold, an emergency circulation of refrigerant fluid is activated through the emergency circulation duct.
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公开(公告)号：US11852393B2
公开(公告)日：2023-12-26
申请号：US17173510
申请日：2021-02-11
申请人： EPTA S.P.A.
CPC分类号： F25B6/02 , F24F11/32 , F25B5/00 , F25B27/00 , F25B39/00 , F25B41/22 , F25B41/34 , F25B49/02 , F25B2400/0401 , F25B2400/0403 , F25B2400/0409 , F25B2400/075 , F25B2500/27 , F25B2600/2501 , F25B2700/19
摘要： A vapor compression refrigeration system has a main refrigerant circuit having a primary compressor group, a gas cooler or condenser, an expansion device, a liquid receiver, and at least one evaporator. An emergency circulation duct fluidically connects the liquid receiver to the main circuit to allow a flow of refrigerant from the liquid receiver to the gas cooler. An emergency compressor group in the emergency circulation duct is activatable when pressure inside the liquid receiver or in the duct upstream of the emergency compressor group meets or exceeds a predefined emergency pressure threshold. An uninterruptible power supply powers the emergency compressor group and expansion device during a shutdown of the refrigeration system. When pressure inside the liquid receiver or in the duct upstream of the emergency compressor group equals or exceeds the predefined emergency pressure threshold, an emergency circulation of refrigerant fluid is activated through the emergency circulation duct.
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7.发明申请公开(公告)号：US20190203980A1
公开(公告)日：2019-07-04
申请号：US16301231
申请日：2017-05-16
申请人： EPTA S.p.A.
发明人： Paolo CAVALLERI , Mario DE BONA , Daniele MAZZOLA
CPC分类号： F25B5/02 , F25B1/10 , F25B5/00 , F25B41/04 , F25B49/02 , F25B2400/075 , F25B2400/13 , F25B2400/23 , F25B2500/28 , F25B2600/2515 , F25B2700/04
摘要： The invention relates to a refrigeration plant with multiple evaporation levels, operating according to a vapour compression cycle and comprising a circuit 2 having a high-pressure branch HP, wherein is arranged at least one heat exchanger 10, and two or more low-pressure branches LP1,LP2,LP3, each of which operates at a different evaporation level to serve users having different refrigeration requirements. In each of the low-pressure branches the plant comprises an expansion device 11′,11″,11″′, at least one evaporator 12′,12″,12′″ and a compressor group 13′,13″,13′″. Said at least one evaporator of each low-pressure branch LP1, LP2, LP3 is connected directly to said high-pressure branch HP. At least a first low-pressure branch LP1 comprises a liquid separator 20′ that is fluidically connected: —to the evaporator outlet 12′ to collect the liquid exiting the evaporator itself in the case in which the latter is operating in overfeeding conditions; and —to the intake of the compressor group 13′. Such liquid separator 20′ is fluidically connected to a second low-pressure branch LP2 upstream of the expansion device 11″ of such second low-pressure branch through a first connection duct 21′. The circuit comprises controllable first valve means 22″, 23′.
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