EP3491306A1 - Système réfrigérant dote d'une conduite de liquide de dérivation d'une ligne de collecte - Google Patents

Système réfrigérant dote d'une conduite de liquide de dérivation d'une ligne de collecte

Info

Publication number
EP3491306A1
EP3491306A1 EP16910757.0A EP16910757A EP3491306A1 EP 3491306 A1 EP3491306 A1 EP 3491306A1 EP 16910757 A EP16910757 A EP 16910757A EP 3491306 A1 EP3491306 A1 EP 3491306A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
valve
harvest
line
conduit
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.)
Withdrawn
Application number
EP16910757.0A
Other languages
German (de)
English (en)
Other versions
EP3491306A4 (fr
Inventor
William E. OLSON Jr.
Cary J. Pierskalla
Thomas H. Antoine
Dean M. Petersen
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.)
Welbilt Foodservice Companies LLC
Original Assignee
Manitowoc Foodservice Companies LLC
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 Manitowoc Foodservice Companies LLC filed Critical Manitowoc Foodservice Companies LLC
Publication of EP3491306A1 publication Critical patent/EP3491306A1/fr
Publication of EP3491306A4 publication Critical patent/EP3491306A4/fr
Withdrawn legal-status Critical Current

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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/04—Producing ice by using stationary moulds
    • F25C1/06—Producing ice by using stationary moulds open or openable at both ends
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/02—Apparatus for disintegrating, removing or harvesting ice
    • F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
    • F25C5/08—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice
    • F25C5/10—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice using hot refrigerant; using fluid heated by refrigerant
    • 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

Definitions

  • the present disclosure relates generally to refrigerant systems. More particularly, the present disclosure relates to a refrigerant system having a liquid line to harvest line bypass.
  • ice making assembly 30 has an ice making machine 33 that makes ice and an ice bin 31 that stores ice.
  • FIGS. 2 and 3 illustrate schematically a water/ice system of ice making assembly 30, but does not show the ice bin 31 or reservoir.
  • a water supply 1 provides source water. Attached lines control and direct the flow of water from the water supply to flow into a water sump 3.
  • the sump is equipped with a level controller 2, a solenoid dump valve 9, a drain line 10, and is connected and supplies a water supply to the suction side of the circulating pump 4.
  • Pump 4 circulates water from sump 3 to the distributor 7, where the water is directed over an evaporator plate 8.
  • Evaporator plate has walls 6a, 8b, 6c, 6d that form ice having a shape, e.g., cubes.
  • the water from the distributor 7 is directed across the evaporator plate 8 and, if not frozen to form ice on a first pass, is collected by the water curtain 5. This collected water is allowed to flow down the water curtain into the water sump or water reservoir 3, where it is collected and again circulated by the circulating pump 4 to the distributor 7 and recycled across evaporator plate 6 during a freeze cycle. Once the ice forming on the evaporator plate 6 has reached a certain thickness, the water flowing over the surface of that frozen ice product reaches contact with the ice thickness probe 8, which signals the controller to stop the freeze mode and begin a harvest mode.
  • FIG. 4 shows an example of ice making assembly 30.
  • evaporator plate 6 is in contact with a refrigerant system 100.
  • Refrigerant system 100 comprises a condenser 11 1 , evaporator 108, a compressor 1 14, refrigerant supply line 120, a drier 121 , a receiver 122 on some units, harvest valve 123, and an expansion valve 1 3.
  • Evaporator plate 6 of FIG, 4 is in thermal communication with evaporator 106 of FIG, 5.
  • evaporator 108 in the freeze mode, has low- pressure liquid 132 that expands, absorbs heat, and evaporates, changing to a low-pressure vapor 134 in evaporator serpentine 1 2.
  • Compressor 1 4 pumps low-pressure vapor 134 from an outlet of evaporator 106 to condenser 1 11 increasing the pressure of low-pressure vapor 134 forming high pressure vapor 136 at condenser 11 1.
  • condenser 111 heat is removed from high pressure vapor 136, which then condenses and becomes a high-pressure liquid 138.
  • This high-pressure liquid 138 drains from condenser 11 into liquid line 142 and optional receiver tank 122 to provide a buffer for refrigerant as demand varies.
  • Expansion device 13 is between condenser 11 1 and evaporator 106.
  • drier 121 Immediately preceding expansion device 1 13 is drier 121 , which prevents plugging of the valve or tube by retaining scale, dirt, and moisture.
  • high-pressure liquid 138 As high-pressure liquid 138 enters evaporator 106, it is subjected to a much lower pressure due to the suction of compressor 1 14 and a pressure drop across expansion devices 113. Thus, the refrigerant tends to expand and evaporate. In order to evaporate, the liquid must absorb heat from the water passing over evaporator 106 forming low pressure liquid 132, Harvest valve 123 is closed during the freeze mode.
  • Harvest line 144 continuously circulates refrigerant so that high pressure vapor 136 is in compressor 1 14 to flow through refrigerant supply line 120 into evaporator 106; high pressure vapor 136 flows toward evaporator 106 through harvest valve 123 lowering the pressure to form low- pressure vapor 134; low-pressure vapor 134 flows through evaporator 106 lowering pressure further forming low pressure liquid 132; and low pressure liquid 132 flows from evaporator 106 to compressor 114.
  • Liquid line 142 has high pressure vapor 136 and high pressure liquid 138 in condenser 111 between expansion device 1 13 and condenser 11 1.
  • Evaporator 106 is cooled by boiling refrigerant in an evaporator serpentine 112 of evaporator 106 while water is circulated over the evaporator 06 to freeze ice when the machine is in the freeze mode.
  • Evaporator 106 is warmed by routing high pressure vapor 136 toward evaporator serpentine 1 2 to melt the evaporator/ice contact surface and allow gravity to pull the batch of ice off evaporator plate 6 when the machine is in the harvest mode.
  • the refrigerant used in refrigerant system 100 can be any of a number of chemicals and chemical blends, but the need for reduced Global Warming Potential of the refrigerant has moved the industry towards using
  • hydrocarbons as a refrigerant in refrigerant system 100.
  • HC refrigerant hydrocarbons
  • the flammable nature of HC refrigerants has driven regulatory bodies to impose limits on the maximum charge amount allowed in a single refrigeration system, for instance 150 grams.
  • a refrigerant system includes a compressor connected to a first valve forming a harvest line, a condenser connected to the compressor by a first segment of conduit and an expansion device by a second segment of conduit with the condenser and the second segment of conduit forming a liquid line.
  • a third segment of conduit is connected to the liquid line and the harvest line with the third segment of conduit having a second valve.
  • the second valve allows flow of refrigerant from the liquid line to the harvest line through the third segment of conduit in an open position and the second valve blocking flow of the refrigerant from the liquid line to the harvest line through the third segment of conduit in a closed position.
  • FIG. 1A provides an illustration of a conventional automatic ice making machine.
  • FIGS. 2 and 3 provide line diagrams and drawings for an embodiment of a water/ice system of the conventional ice machine of FIG. 1 ,
  • FIG. 4 is a perspective view of an ice making machine with
  • FIG. 5 provides a line diagram describing an embodiment for the refrigerant system of the conventional ice machine of FIG. 1.
  • FIG. 6 provides a line diagram describing the embodiment for the refrigerant system of the conventional ice machine of FIG. 5 in a freeze mode.
  • FIG. 7 provides a line diagram describing the embodiment for the refrigerant system of the conventional ice machine of FIG. 5 in a harvest mode.
  • FIG. 8 provides a line diagram describing a refrigerant system having a liquid line to harvest line bypass of the present disclosure.
  • FIG. 9 provides a line diagram describing the refrigerant system having the liquid line to harvest line bypass of FIG. 8 in a freeze mode.
  • FIG. 10 provides a line diagram describing the refrigerant system having the liquid line to harvest line bypass of FIG. 8 in a harvest mode.
  • FIG. 11 provides a line diagram describing a refrigerant system having the liquid line to harvest line bypass and a check valve at an inlet of a condenser of the present disclosure.
  • FIG. 12 provides a line diagram describing the refrigerant system having the liquid line to harvest line bypass and the check valve at the inlet of the condenser of FIG. 1 1 in freeze mode.
  • FIG. 13 provides a line diagram describing the refrigerant system having the liquid line to harvest line bypass and the check valve at the inlet of the condenser of FIG. 11 in harvest mode.
  • FIG. 14 is a perspective view of a check valve of the liquid line to harvest line bypass of FIG. 8.
  • FIG. 15 is a side view of the check valve of FIG, 14.
  • Refrigerant system 200 has a compressor 201 connected to a condenser 202.
  • Condenser 202 is connected to an evaporator 206.
  • Evaporator 206 is connected to compressor 201 .
  • Between the connection of compressor 201 and evaporator 206 is a harvest line valve 209.
  • Between the connection of compressor 201 and harvest line valve 209 is a strainer 210.
  • Between evaporator 206 and condenser 202 is an expansion valve 208, a drier 221 and a receiver 222.
  • Compressor 201 condenser 202, evaporator 206, expansion valve 208, harvest line valve 209, strainer 210, drier 221 and optionally a receiver 222 are connected by a conduit 220.
  • Conduit 220 can be made of a plurality of separate conduits. A portion of conduit 220 between condenser 202 and expansion valve 208 forms a liquid line 242. A portion of conduit 220 between compressor 201 and harvest line valve 209 forms a harvest line 244.
  • a first portion of conduit 220 between evaporator 208 and compressor 201 and a second portion of conduit 220 between condenser and evaporator 206 are in thermal communication so that heat transfer occurs between the first and second portions of conduit 220, A heat exchanger 2 1 may be between the first and second portions of conduit 220.
  • Evaporator plate 6 of FIG. 3 is in thermal communication with evaporator 208 of FIG. 8 to form a part of an ice maker.
  • Refrigerant used in refrigerant system 200 for example, is a hydrocarbons refrigerant with a maximum charge of less than 150 grams.
  • Liquid line 242 is connected to harvest line 244 by a conduit assembly 300.
  • Conduit assembly 300 has a conduit 310 and a valve 320.
  • Valve 320 may be a check valve so that flow of refrigerant is only allowed in a single direction from liquid line 242 to harvest line 244.
  • Valve 320 that is a check valve is actuated by a pressure differential so that once pressure in liquid line 242 reaches a predetermined pressure differential above harvest line 244, for example, 1 psi, a mechanism that biases valve 320 in a closed position is overcome to move valve 320 to an open position allowing flow of the refrigerant from liquid line 242 to harvest line 244.
  • Valve 320 that is a check valve is moved to a closed position once pressure in liquid line 242 falls below the predetermined pressure differential so that the mechanism biases valve 320 into the closed position to block flow of the refrigerant between liquid line 242 to harvest line 244.
  • the check valve of valve 320 can have a housing 322 and a ball 324 inside of housing 322, Housing 322 has a first opening 326 and a second opening 328, First opening 326 is connected to liquid line 242. Second opening 328 is connected to harvest line 244.
  • Flowers 324 blocks first opening 326 in the dosed position so that the refrigerant cannot pass through housing 322 from first opening 326 to second opening 328.
  • the pressure of the refrigerant in harvest line 244 urges ball 324 against housing 322 covering first opening 326 in the closed position.
  • Beauty 324 is moved from the closed position blocking first opening 326 by the pressure differential so that once pressure of the refrigerant in liquid line 242 reaches a predetermined pressure differential above pressure of the refrigerant harvest line 244, for example, 1 psi, ball 324 is moved away from first opening 326 allowing flow of the refrigerant through first opening 326, housing 322, and second opening 328 from liquid line 242 to harvest line 244.
  • Bail 324 is moved to the closed position once pressure of the refrigerant in liquid line 242 is below the pressure differential, for example, pressure of the refrigerant in liquid line 242 is less than 1 psi above pressure of the refrigerant harvest line 244, to block flow of the refrigerant between liquid line 242 to harvest line 244. Accordingly, flow of the refrigerant is only permitted in one direction by the check valve of valve 320 from liquid line 242 to harvest line 244.
  • Valve 320 may be a solenoid valve.
  • the solenoid valve maintains a closed position, and, when energized, the solenoid valve moves to an open position so that refrigerant can flow between liquid line 242 and harvest line 244.
  • the solenoid valve is de-energized to return to the closed position blocking flow of the refrigerant between liquid line 242 and harvest line 244.
  • refrigerant system 200 is shown in the freeze mode.
  • Evaporator 206 has low-pressure liquid 232 that expands, absorbs heat, and evaporates, changing to a low-pressure vapor 234 in evaporator serpentine 212.
  • Compressor 201 pumps low-pressure vapor 234 from an outlet of evaporator 208 to condenser 202 increasing the pressure of low- pressure vapor 234 forming high pressure vapor 236 at condenser 202.
  • condenser 202 heat is removed from high pressure vapor 236, which then condenses and becomes a high-pressure liquid 238.
  • This high-pressure liquid 238 drains from condenser 202 into optional receiver tank 222 to provide a buffer for refrigerant as demand varies.
  • Expansion device 208 is between condenser 202 and evaporator 206. Immediately preceding expansion device 208 is drier 221 , which prevents plugging of the valve or tube by retaining scale, dirt, and moisture.
  • the closed harvest solenoid valve 209 is opened by controller 500 establishing a liquid line 242 and a harvest line 244.
  • Harvest line 244 continuously circulates refrigerant so that high pressure vapor 236 is in compressor 201 to flow through refrigerant supply line 220 into evaporator 206; high pressure vapor 236 flows toward evaporator 206 through harvest solenoid valve 209 lowering the pressure to form low-pressure vapor 234; low-pressure vapor 234 flows through evaporator 206 releasing heat into evaporator 206 and forming a mixture of low pressure liquid 232 and low pressure vapor 234; and this mixture of low pressure liquid 232 and low pressure vapor 234 flows from evaporator 206 to compressor 20 , Liquid line 242 has high pressure vapor 236 and high pressure liquid 238 in condenser 202 between expansion device 208 and condenser 202.
  • a pressure in liquid line 242 is higher than a pressure in harvest line 244 during the harvest mode, resulting in flow through valve 320 drawing the refrigerant from liquid line 242 to harvest line 244.
  • This increases the mass flow of refrigerant involved in harvesting the batch of ice, resulting in a higher suction pressure from evaporator 206 to compressor 201 during that period and thus a higher saturated refrigerant temperature inside evaporator serpentine 212 than a refrigerant system without conduit assembly 300.
  • the refrigerant has a temperature between 35 degrees Fahrenheit and 60 degrees Fahrenheit in evaporator 208 during a harvest mode.
  • valve 320 that is a check valve to move valve 320 to an open position for flow of high pressure liquid 238 through valve 320 and conduit 310 from liquid line 242 to harvest line 244 due to a pressure of high pressure liquid 238 being higher in liquid line 242 than a pressure of lower-pressure vapor of the refrigerant in harvest line 244.
  • a controller for example, controller 500, actuates valve 320 that is a solenoid valve to move valve 320 into an open position for flow of high pressure liquid 238 through valve 320 and conduit 310 from liquid line 242 to harvest line 244 due to a pressure of high pressure liquid 238 being higher in liquid line 242 than a pressure of lower-pressure vapor of the refrigerant in harvest line 244.
  • hydrocarbons refrigerant can operate within an ambient temperature range of between 35 degrees Fahrenheit to 110 degrees Fahrenheit. This temperature range is similar to a refrigerant system using current hydrofluorocarbon refrigerants or an R 290 refrigerant in an amount that is greater than 150 grams, in contrast, a refrigerant system using a conventional refrigerant component layout with less than 150 grams of a hydrocarbons refrigerant could operate within an ambient temperature range of between 50 degrees Fahrenheit to 1 0 degrees Fahrenheit and would have reduced performance at moderate temperatures (50 degrees Fahrenheit to 70 degrees Fahrenheit), [0038] As discussed herein the discharge pressure of compressor 201 decreases during the harvest mode and some of the refrigerant in liquid line 242 boils so that some amount of the refrigerant will flow backwards through condenser 202 and into harvest line 244, but most of the refrigerant will remain stagnant in liquid line 242 until the harvest mode is completed and refrigerant system 200 returns to the freeze mode.
  • conduit assembly 300 may be connected a distance D1 away from condenser 202 in liquid line 242.
  • Distance D1 can be between 0% and 00% of a distance between condenser 202 and expansion device 208.
  • Conduit assembly 300 is connected to harvest line 244 to establish a desirable pressure differential between harvest line 244 and liquid line 242, Conduit assembly 300 may be connected a distance D2 away from harvest line valve 209 in harvest line 244. Distance D can be 0% and 100% of a distance between compressor 201 and harvest line valve 209.
  • the opened harvest solenoid valve 209 is dosed by controller 500 to commence the freeze mode.
  • the freeze mode there is no flow between compressor 201 and han/est line valve 209 so the pressure is the same as a discharge pressure of compressor 201.
  • the pressure between condenser 202 and expansion device 208 is lower than the compressor discharge pressure between compressor 201 and harvest line valve 209 resulting in the refrigerant that is high pressure liquid 238 to fail below the pressure differential during the freeze mode moving valve 320 to a closed position to block flow of high pressure liquid 238 through valve 320 and conduit 310.
  • refrigerant system 200 returns to operation in the freeze mode as shown in FIG. 9.
  • Valve 320 that is the check valve prevents flow through conduit 310 and refrigerant system 200 during the freeze mode for operation the same as a conventional refrigerant system, for example, refrigerant system 100, during the freeze mode.
  • a controller for example, controller 500, doses valve 320 that is a solenoid valve to move valve 320 into a closed position for blocking flow of high pressure liquid 238 through valve 320 and conduit 310 in the freeze mode.
  • Conduit assembly 300 does not require an expensive configuration of valves in contrast to a configuration connecting an evaporator to a liquid receiver in a refrigerant system. Accordingly, conduit assembly 300 provides desirable cost benefits.
  • refrigerant system 400 is the same as refrigerant system 200 except that refrigerant system 400 includes a valve 600.
  • the features of refrigerant system 400 that are the same as refrigerant system 200 have the same reference numerals.
  • Valve 800 at the inlet of condenser 202 is oriented to allow flow into condenser 202 but not out of condenser 202.
  • Valve 600 does not affect flow of refrigerant during the freeze mode, but would prevent refrigerant from backing out of condenser 202 during the harvest mode.
  • refrigerant system 200 and refrigerant system 400 may be reduction in required amount of refrigerant in a commercial ice maker by elimination of high-side refrigerant storage vessels, for instance a receiver utilized in a water-cooled system. Such vessels are sometimes included in systems with small condenser volume to increase the refrigerant charge in those systems to improve performance.

Abstract

Ce système réfrigérant comprend un compresseur relié à une première soupape formant une ligne de collecte, un condenseur et un dispositif d'expansion relié au compresseur respectivement par un premier segment de conduite et un second segment de conduite, le condensateur et le second segment de conduite formant une conduite de liquide. Un troisième segment de conduite est relié à la conduite de liquide et à la ligne de collecte. Le troisième segment de conduite comporte une deuxième soupape. La deuxième soupape permet l'écoulement du réfrigérant et bloque l'écoulement du réfrigérant de la conduite de liquide à la ligne de récolte à travers le troisième segment de conduite respectivement dans une position ouverte et dans une position fermée.
EP16910757.0A 2016-07-29 2016-07-29 Système réfrigérant dote d'une conduite de liquide de dérivation d'une ligne de collecte Withdrawn EP3491306A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/044776 WO2018022097A1 (fr) 2016-07-29 2016-07-29 Système réfrigérant dote d'une conduite de liquide de dérivation d'une ligne de collecte

Publications (2)

Publication Number Publication Date
EP3491306A1 true EP3491306A1 (fr) 2019-06-05
EP3491306A4 EP3491306A4 (fr) 2020-10-14

Family

ID=61016756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16910757.0A Withdrawn EP3491306A4 (fr) 2016-07-29 2016-07-29 Système réfrigérant dote d'une conduite de liquide de dérivation d'une ligne de collecte

Country Status (2)

Country Link
EP (1) EP3491306A4 (fr)
WO (1) WO2018022097A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11802727B2 (en) 2020-01-18 2023-10-31 True Manufacturing Co., Inc. Ice maker
US11391500B2 (en) 2020-01-18 2022-07-19 True Manufacturing Co., Inc. Ice maker
US11656017B2 (en) 2020-01-18 2023-05-23 True Manufacturing Co., Inc. Ice maker
US11255589B2 (en) 2020-01-18 2022-02-22 True Manufacturing Co., Inc. Ice maker
US11578905B2 (en) 2020-01-18 2023-02-14 True Manufacturing Co., Inc. Ice maker, ice dispensing assembly, and method of deploying ice maker
US11602059B2 (en) 2020-01-18 2023-03-07 True Manufacturing Co., Inc. Refrigeration appliance with detachable electronics module
US11913699B2 (en) 2020-01-18 2024-02-27 True Manufacturing Co., Inc. Ice maker
US11519652B2 (en) 2020-03-18 2022-12-06 True Manufacturing Co., Inc. Ice maker
US11674731B2 (en) 2021-01-13 2023-06-13 True Manufacturing Co., Inc. Ice maker
US11686519B2 (en) 2021-07-19 2023-06-27 True Manufacturing Co., Inc. Ice maker with pulsed fill routine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5042263A (en) * 1990-08-13 1991-08-27 Servend International, Inc. Ice making machine with freeze and harvest control
US5218830A (en) * 1992-03-13 1993-06-15 Uniflow Manufacturing Company Split system ice-maker with remote condensing unit
US6196007B1 (en) * 1998-10-06 2001-03-06 Manitowoc Foodservice Group, Inc. Ice making machine with cool vapor defrost
US6637227B2 (en) * 2000-09-15 2003-10-28 Mile High Equipment Co. Quiet ice making apparatus
US6681580B2 (en) * 2001-09-12 2004-01-27 Manitowoc Foodservice Companies, Inc. Ice machine with assisted harvest
WO2013106725A1 (fr) * 2012-01-13 2013-07-18 Manitowoc Foodservice Companies, Llc Condenseur à faible volume de fluide frigorigène pour fluide frigorigène à hydrocarbures et machine de fabrication de glace utilisant celui-ci
US9845982B2 (en) * 2014-01-08 2017-12-19 True Manufacturing Company, Inc. Variable-operating point components for cube ice machines

Also Published As

Publication number Publication date
EP3491306A4 (fr) 2020-10-14
WO2018022097A1 (fr) 2018-02-01

Similar Documents

Publication Publication Date Title
US10107540B2 (en) Refrigerant system with liquid line to harvest line bypass
WO2018022097A1 (fr) Système réfrigérant dote d'une conduite de liquide de dérivation d'une ligne de collecte
US20170003062A1 (en) Multi-evaporator sequencing apparatus and method
CN102221276B (zh) 一种用于冰箱的制冰装置和具有其的冰箱
US2713249A (en) Liquid defrosting system and the like
CN102725597A (zh) 集装箱用冷冻装置
RU2468308C2 (ru) Холодильный аппарат с тремя температурными зонами
WO2010091350A2 (fr) Système de retour d'huile et procédé de régulation de la charge active dans un système d'air conditionné
CZ20012527A3 (cs) Parní kompresní systém a způsob jeho provozování
WO2009056527A2 (fr) Dispositif de refroidissement
KR101916878B1 (ko) 냉수생성 탱크 및 이를 구비하는 냉수기
JP5769684B2 (ja) ヒートポンプ装置
EP3908119A1 (fr) Machine à glaçons
KR101343462B1 (ko) 제빙 및 냉각 시스템
JP4545634B2 (ja) 冷凍装置の冷媒分配装置
US20080016896A1 (en) Refrigeration system with thermal conductive defrost
JP2008128570A (ja) 冷凍装置
CN107525309A (zh) 蒸发器、蒸发器的除霜方法以及使用该蒸发器的冷却装置
CN108700348A (zh) 具有冷冻格室和制冷剂循环系统的制冷器具以及用于运行制冷器具的方法
KR20170100190A (ko) 제빙기
CN104620065A (zh) 具有承载轨的制冷器具
JP7025868B2 (ja) 直接接触熱交換器を備えた冷媒システム
DE10336834A1 (de) Kältegerät mit Eisbereiter
EP3172507B1 (fr) Appareil de froid muni d'un réservoir à liquide
JPS6050247B2 (ja) 冷凍装置

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190124

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20200916

RIC1 Information provided on ipc code assigned before grant

Ipc: F25C 1/12 20060101ALI20200910BHEP

Ipc: F25C 5/08 20060101AFI20200910BHEP

Ipc: F25C 1/00 20060101ALI20200910BHEP

Ipc: F25C 5/00 20180101ALI20200910BHEP

Ipc: F25B 41/04 20060101ALI20200910BHEP

Ipc: F25B 47/02 20060101ALI20200910BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20210817