EP1780484A1 - Refrigerateur composite possedant un systeme de refrigeration a cycles multiples et son procede de controle - Google Patents

Refrigerateur composite possedant un systeme de refrigeration a cycles multiples et son procede de controle Download PDF

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Publication number
EP1780484A1
EP1780484A1 EP04797376A EP04797376A EP1780484A1 EP 1780484 A1 EP1780484 A1 EP 1780484A1 EP 04797376 A EP04797376 A EP 04797376A EP 04797376 A EP04797376 A EP 04797376A EP 1780484 A1 EP1780484 A1 EP 1780484A1
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EP
European Patent Office
Prior art keywords
refrigerating
freezing
evaporator
cycle
auxiliary
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Withdrawn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
EP04797376A
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German (de)
English (en)
Inventor
Yanquan Li
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.)
Hisense Group Co Ltd
Original Assignee
Hisense Group Co Ltd
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
Priority claimed from CN 200410035589 external-priority patent/CN1598447A/zh
Priority claimed from CN 200410035588 external-priority patent/CN1598446A/zh
Application filed by Hisense Group Co Ltd filed Critical Hisense Group Co Ltd
Publication of EP1780484A1 publication Critical patent/EP1780484A1/fr
Withdrawn legal-status Critical Current

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators

Definitions

  • the present invention relates to a refrigerator, in particular, it relates to a refrigerator having a compression device provided with several refrigeration loops arranged in series or in parallel.
  • Prior Art I The refrigerating and freezing chamber of common compression refrigeration system, of which the cycle refrigeration loop is a single system.
  • the outlet of compressor 1 is connected to condenser 2
  • the downstream of condenser 2 is connected to throttle capillary 3
  • the downstream of capillary 3 is connected to freezing evaporator 4 then to refrigerating evaporator 5, or refrigerating evaporator 5 then to freezing evaporator 4, and is finally connected to compressor 1 through gas returning pipe 6.
  • the operation principle of Prior Art I is as follows: The operation of compressor 1 is controlled by a temperature sensor provided in the refrigerating chamber. When the temperature of the refrigerating chamber is higher than the predefined startup temperature, the compressor begins to operate, and the temperatures of the two chambers drop simultaneously; when the temperature of the refrigerating chamber is lower than the predefined halt temperature, the compressor ceases to operate and the temperatures of the two chambers rise simultaneously. When the temperature of the refrigerating chamber rises back to a point which is higher than the predefined startup temperature, the compressor begins to operate again, and this process repeats to keep the temperatures of the refrigerating chamber within a certain temperature range.
  • the system possesses a simple structure, and its operation is controlled by the temperature of the refrigerating chamber, and the temperature of the freezing chamber cannot be controlled independently and it varies with the change in the temperature of the surrounding environment.
  • the surrounding temperature rises during summertime, and the temperature of the freezing chamber is too low, it will consume more cooling capacity; and during wintertime the surrounding temperature is so low that the operation frequency required by refrigerating chamber is low while the temperature of the freezing chamber is too high, and the common solution is to add auxiliary heating device, which compels a cycle start up to reduce the temperature of freezing chamber. Obviously, the auxiliary heating device consumes extra energy.
  • Prior Art II Traditional dual system topology, generally bases on the above-mentioned topology structure that connects the refrigerating before the freezing, having the input port of the solenoid valve 31 connected to the end of condenser 2.
  • the solenoid valve 31 is provided with two output ports, one of which is connected to the refrigerating throttle capillary 3, and the other is connected to the auxiliary freezing throttle capillary 34, the end of capillary 34 is connected to the output port of refrigerating evaporator 5 and the input port of freezing evaporator 4, and the end of freezing evaporator 4 is connected to the gas returning end of compressor 1 through the gas returning pipe 6.
  • the operation principle of Prior Art II is as follows: The operation of compressor 1 is controlled by the temperature sensor provided in the refrigerating chamber. When the temperature of the refrigerating chamber is higher than the predefined startup temperature, the compressor begins to operate and the temperatures of the two chambers drop simultaneously; when the temperature of the refrigerating chamber is lower than the predefined halt temperature, the compressor ceases to operate and the temperatures of the two chambers rise simultaneously. When the temperature of the freezing chamber rises due to fast cooling or low surrounding temperature, the auxiliary freezing cycle will be started to reduce the temperature of freezing chamber independently. Compared with the cycle loop of common, single system, the dual system excludes the auxiliary heating device, and when the surrounding temperature is low, energy will be saved.
  • the advantages of the refrigerating and freezing chamber of dual system lie in that the refrigerating chamber can be closed down, and the freezing chamber can be utilized independently. Meanwhile, the system possesses large cooling capacity, because freezing chamber has independent capillary throttle control device. This art has been widely applied.
  • Prior Art III In order to close down the freezing chamber and utilize the refrigerating chamber independently, a parallel topology structure has been proposed by some prior inventions.
  • the topology structure is characterized in that the refrigerating and freezing adopt two independent throttle and evaporating refrigeration loops.
  • the topology structure is simple, and can operate the refrigerating and freezing refrigeration loop independently thereby save energy.
  • evaporation pressure and temperature deviates largely from the optimum value, which causes the system efficiency to decrease, and causes energy consumption to rise.
  • the new topology structure refrigeration system of the said "composite multi-cycle” successfully solves the contradiction existing between refrigeration efficiency and the function of stopping freezing, and it can optimize the system efficiency in the normal operational state, in which the refrigerating chamber and the freezing chamber are used simultaneously and reduce the power consumption effectively. Meanwhile, it can further realize the function of closing the freezing chamber and converting the refrigerating chamber into a freezing chamber of the different classes.
  • the said "composite" means that "multiple" refrigeration system loop and chambers are "independently” controlled.
  • the composite refrigerator having multi-cycle refrigeration system is implemented as follows: it comprises a main CPU, a temperature sensor and a refrigeration cycle loop, wherein the refrigeration cycle loop is composed of a compressor, a condenser, a main capillary, a freezing evaporator, a refrigerating evaporator and a gas returning pipe which are connected in series, and a solenoid valve having two output ports is connected to the downstream of the condenser, and one of the output ports is connected to the main capillary and the other is connected to an auxiliary refrigerating cycle branch.
  • the solution can be realized in details by following structures:
  • control method according to the present invention comprises steps:
  • the present embodiment provides a typical system of topology structure according to the present invention, which comprises a main CPU, a temperature sensor and a refrigeration cycle loop.
  • the refrigeration cycle loop is composed of a compressor 1, a condenser 2, a main capillary 3, a freezing evaporator 41, a refrigerating evaporator 51 and a gas returning pipe 6 which are in turn connected in series accordingly, and the downstream of the condenser 2 is connected in series to a solenoid valve 31 having two output ports, one of which is connected to the main capillary 3, and the other is connected to the auxiliary refrigerating cycle branch
  • the auxiliary refrigerating cycle branch comprises auxiliary refrigerating capillary 32, which is in parallel with the main capillary 3 and the freezing evaporator 41 that are themselves connected in series, and the auxiliary refrigerating capillary 32 is connected between the output port of the solenoid valve 31 and the input port of the refrigerating evaporator 51.
  • the difference of the Embodiment 1 lies in that, in the loop, the freezing evaporator 41 is connected before refrigerating evaporator 51.
  • the refrigerant cycle system of the present invention flows in the following manner:
  • the solenoid valve 31 according to the present invention is provided as a two-position three-way valve.
  • the refrigerating evaporator 51 and the freezing evaporator 41 comprise single evaporator and a combination of several evaporators in series for chambers with same or different temperatures.
  • the typical matching strategy of the refrigerator according to the present invention is as follows:
  • the typical temperature control strategy of the refrigerator according to the present invention is as follows: As surrounding temperature rises or refrigerating load changes, the refrigerating temperature rises to a point which is higher than a certain level (the refrigerating target temperature + X), then the solenoid valve of the auxiliary refrigerating cycle loop will be switched on to reduce the temperature of the refrigerating chamber solely and reach the refrigerating target temperature. When freezing temperature drops to a point which is lower than a certain level (the freezing target temperature - Y), the solenoid valve of the freezing will be switched off to cut off the freezing cycle loop and reduce the energy loss.
  • X is between 1 ⁇ 3°C
  • Y is between 2 ⁇ 5°C.
  • the typical temperature control program of the refrigerator according to the present invention is as follows:
  • the solenoid valve 31 of the present embodiment is two solenoid valves in parallel installation, one of which is connected between the condenser 2 and the main capillary 3, and the other is connected between the condenser 2 and the auxiliary refrigerating capillary 32, these two valves control respectively the freezing cycle loop and the auxiliary refrigerating cycle branch, and the other parts of embodiment 2 are the same as that of the embodiment 1.
  • the difference between the present embodiment and the above-mentioned embodiments lies in that, the auxiliary refrigerating evaporator 52 is connected to the downstream of the auxiliary refrigerating capillary 32 in series, in such a way, the auxiliary refrigerating cycle branch comprises the auxiliary capillary 32 and the auxiliary refrigerating evaporator 52 connected thereof, the auxiliary refrigerating cycle branch is in parallel with the main capillary 3 and freezing evaporator 41 that are themselves connected in series, and is connected between the output port of the solenoid valve 31 and the output port of the freezing evaporator 41.
  • the present embodiment further reduces the temperature of the refrigerating chamber to convert the refrigerating chamber to icebox, one-star or two-star freezing chamber, and the predefined temperature scope can be large.
  • the present embodiment provides a typical system topology structure according to the present invention, which is completely different from the traditional dual system.
  • the difference between the present embodiment and embodiment 3 lies in that, the auxiliary refrigerating cycle branch is in parallel with the main capillary 3, freezing evaporator 41 and refrigerating evaporator 51 orderly that are themselves connected in series, and is connected between the output port of the solenoid valve 31 and the output port of the refrigerating evaporator 51, i.e. the end of the auxiliary refrigerating cycle branch is connected to the input port of the gas returning pipe.
  • the refrigerant cycle system of the present invention flows in the following manner:
  • the matching strategy of the refrigerator according to the present invention is as follows:
  • the difference between present embodiment and embodiment 4 lies in that, the auxiliary refrigerating cycle branch is still connected to the input port of the gas returning pipe, and the position of refrigerating evaporator 51 and that of freezing evaporator in the refrigeration loop shift with each other, so that the end of the auxiliary refrigerating cycle loop is connected between freezing evaporator 41 and gas returning pipe 6, and the other parts being the same as that of the embodiment 4.
  • the refrigerator according to the present invention includes but is not limited to drawer type and shelf type of home refrigerating freezing refrigerator, regardless of the vertical and horizontal relative positions of the refrigerating chamber and the freezing chamber.
  • the refrigerator having multi-cycle refrigeration system and control method thereof can be applied in the manufacture of and use of various refrigerators with refrigerating and freezing chambers, and the industrial application has wide prospect.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP04797376A 2004-08-19 2004-11-24 Refrigerateur composite possedant un systeme de refrigeration a cycles multiples et son procede de controle Withdrawn EP1780484A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN 200410035589 CN1598447A (zh) 2004-08-19 2004-08-19 复立多循环制冷系统冰箱及其控制方法
CN 200410035588 CN1598446A (zh) 2004-08-19 2004-08-19 冷藏变温的冰箱及其控制方法
PCT/CN2004/001346 WO2006017959A1 (fr) 2004-08-19 2004-11-24 Refrigerateur composite possedant un systeme de refrigeration a cycles multiples et son procede de controle

Publications (1)

Publication Number Publication Date
EP1780484A1 true EP1780484A1 (fr) 2007-05-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797376A Withdrawn EP1780484A1 (fr) 2004-08-19 2004-11-24 Refrigerateur composite possedant un systeme de refrigeration a cycles multiples et son procede de controle

Country Status (3)

Country Link
US (1) US20080190123A1 (fr)
EP (1) EP1780484A1 (fr)
WO (1) WO2006017959A1 (fr)

Cited By (1)

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CN111854236A (zh) * 2020-08-27 2020-10-30 河北省人工影响天气办公室 改进的温控系统及方法

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KR20120012613A (ko) * 2010-08-02 2012-02-10 삼성전자주식회사 냉장고 및 그 제어방법
CN102589182B (zh) * 2012-03-05 2014-08-13 合肥美的电冰箱有限公司 制冷系统以及具有该制冷系统的冰箱和该冰箱的控制方法
KR20170067559A (ko) * 2015-12-08 2017-06-16 엘지전자 주식회사 냉장고 및 그 제어방법
US10544979B2 (en) 2016-12-19 2020-01-28 Whirlpool Corporation Appliance and method of controlling the appliance
KR20200065692A (ko) * 2018-11-30 2020-06-09 삼성전자주식회사 냉장고 및 그 제어 방법
CN112730860A (zh) * 2020-12-18 2021-04-30 南通华兴石油仪器有限公司 一种密闭条件下输送循环实验装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111854236A (zh) * 2020-08-27 2020-10-30 河北省人工影响天气办公室 改进的温控系统及方法
CN111854236B (zh) * 2020-08-27 2023-12-12 河北省人工影响天气中心 改进的温控系统及方法

Also Published As

Publication number Publication date
US20080190123A1 (en) 2008-08-14
WO2006017959A1 (fr) 2006-02-23

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