GB2280971A - Drink dispenser refrigeration system - Google Patents

Drink dispenser refrigeration system Download PDF

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Publication number
GB2280971A
GB2280971A GB9316630A GB9316630A GB2280971A GB 2280971 A GB2280971 A GB 2280971A GB 9316630 A GB9316630 A GB 9316630A GB 9316630 A GB9316630 A GB 9316630A GB 2280971 A GB2280971 A GB 2280971A
Authority
GB
United Kingdom
Prior art keywords
fan
sensing means
temperature sensing
beverage dispense
motor
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Withdrawn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
GB9316630A
Other versions
GB9316630D0 (en
Inventor
Martin Johnson
Harald Schlichting
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.)
Cornelius Inc
Original Assignee
IMI Cornelius Inc
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 IMI Cornelius Inc filed Critical IMI Cornelius Inc
Priority to GB9316630A priority Critical patent/GB2280971A/en
Publication of GB9316630D0 publication Critical patent/GB9316630D0/en
Priority to DE4428008A priority patent/DE4428008A1/en
Publication of GB2280971A publication Critical patent/GB2280971A/en
Withdrawn legal-status Critical Current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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/067—Evaporator fan units
    • 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
    • F25B49/027—Condenser control arrangements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
    • G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time
    • 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
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • 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
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Description

2280971 1 Energy Saving Fan Control for Beverage Dispense Systems The
present invention relates to energy saving fan control for beverage dispense systems.
Fans in beverage dispense systems are used to cool evaporators and condensers of the refrigeration system within the beverage dispense system.
Typically, the rating of a fan is determined by a worst case scenario. Thus a designer will consider the market for the beverage dispense system and determine the worst possible operating conditions.
Then the fan is chosen to meet those severe conditions.
Over-rating of fans is energy inefficient and will increase noise and vibration. Furthermore, and more importantly, over-rating of the fan may cause over-condensing in winter months such that the evaporator is not wholly in use. An over-rated fan will also generate higher air flow within the beverage dispense system and cause more clogging of the system with dirt. This necessitates increased maintenance.
It is an objective of the present invention to provide an energy saving fan control for a beverage dispense system that specifically relieves the above problems.
In accordance with the present invention there is provided an energy saving fan control for a beverage dispense system, the control comprising a motor for the fan, temperature sensing means and a controller, the motor being arranged to power the fan whereby a condensor or evaporator of the beverage dispense system is cooled by air flow, the temperature sensing means being arranged to determine the air temperature and the controller being arranged to 2 S adjust the motor and thus the fan speed in accordance with measurand signals received from the temperature sensing means indicative of air temperature.
Preferably, the temperature sensing means is arranged to determine air temperature at a location between the fan and condensor or evaporator of the beverage dispense system or is located upon the evaporator or condensor or is a pressure sensor arranged to determine refrigerant pressure In accordance with the present invention there is also provided a beverage dispense system including an energy saving fan control for a beverage dispense system, the control comprising a motor for the fan, temperature sensing means and a controller, the motor being arranged to power the fan whereby a condensor or evaporator of the beverage dispense system is cooled by air flow, the temperature sensing means being arranged to determine the air temperature and the controller being arranged to adjust the motor and thus 20.. the fan speed in accordance with measurand signals received from the temperature sensing means indicative of air temperature.
Embodiments of the present invention will now be described with reference to the accompanying schematic drawing of a beverage dispense system.
The fan 1 is arranged to either blow air towards or suck air from a condenser 2. It will be appreciated that the condenser could be replaced in the example by an evaporator. The speed of the fan is determined by the temperature of the air sucked or blown. In order to determine the temperature several techniques can be used.
In a first embodiment of the invention, a sensor 3 is placed in front of the fan 1. The sensor 1 3 3 determines the air temperature and in accordance with that temperature a controller 4 adjusts the fan 1 speed. Thus, depending on ambient conditions, the air flow rate is adjusted.
In a second embodiment of the present invention, a sensor 5 is located on a coil of the condenser 2 such that the temperature of refrigerant within the condenser 2 is determined. The temperature of the refrigerant is proportional to the air temperature. Thus in accordance with the refrigerant temperature a controller 6 in this embodiment will adjust the fan 1 speed.
In a third embodiment of the invention, the refrigerant pressure within the condenser 2 is determined. Thus refrigerant pressure is proportional to the refrigerant temperature and hence proportional to the air temperature flowing over the condenser 2. A controller 7 is arranged to adjust the fan 1 speed in accordance with the condenser refrigerant pressure.
It will be appreciated that as the fan speed is controlled by the blown or sucked air temperature a lower rated fan may be used as compared with previous situations. The fan may be operated for short periods at speeds that would be considered too unreliable for prior systems.
A lower rated fan will optimise the energy efficiency of the beverage dispense cooling system. There will be less fan noise and vibration, and the fan's life and service intervals due to reduced dirt clogging with lower air flow rates will increase.
As the fan speed is more accurately controlled there is less likelihood of over-condensing of the refrigerant. Over-condensing of the refrigerant will cause reduced refrigerant pressure incident upon the 4 evaporator. Thus, reduced evaporator refrigerant pressure and the inherent problems of hot spots due to that reduced pressure are limited.
As fan operation is more strictly controlled it is possible to choose a reduced or single fan to accommodate a wide range of operating conditions that a designer may envisage. This avoids retaining stocks of various fan sizes for manufacture and maintenance purposes.
It will be appreciated that the controller may be designed to provide programmed cooling of the evaporator or condensor throughout the day.
The fans may be driven by an AC motor with variable or stepped speeds or a DC motor with variable speed or motors with viscous or magnetic drive couplings.
t x a

Claims (1)

  1. Claims:
    1. An energy saving fan control for a beverage dispense system, the control comprising a motor for the fan, temperature sensing means and a controller, the motor being arranged to power the fan whereby a condensor or evaporator of the beverage dispense system is cooled by air flow# the temperature sensing means being arranged to determine the air temperature and the controller being arranged to adjust the motor and thus the fan speed in accordance with measurand signals received from the temperature sensing means indicative of air temperature.
    2. An energy saving fan control as claimed in claim 1 wherein the temperature sensing means is arranged to determine air temperature at a location between the fan and condensor or evaporator of the beverage dispense system 3. An energy saving fan control as claimed in claim 1 wherein the temperature sensing means is located upon the evaporator or condensor.
    4. An energy saving fan control as claimed in claim 1 wherein the temperature sensing means is a pressure sensor arranged to determine refrigerant pressure.
    6. An energy saving fan control for a beverage dispense system substantially as hereinbefore dexcribed with reference to the attached sketch.
    7. A beverage dispense system including an energy saving fan control for a beverage dispense system, the control comprising a motor for the fan# temperature sensing means and a controller, the motor being arranged to power the fan whereby a condensor or evaporator of the beverage dispense system is cooled by air flow, the temperature sensing means being 6 arranged to determine the air temperature and the controller being arranged to adjust the motor and thus the fan speed in accordance with measurand signals received from the temperature sensing means indicative of air temperature.
    -I k
GB9316630A 1993-08-09 1993-08-09 Drink dispenser refrigeration system Withdrawn GB2280971A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9316630A GB2280971A (en) 1993-08-09 1993-08-09 Drink dispenser refrigeration system
DE4428008A DE4428008A1 (en) 1993-08-09 1994-08-08 Energy-saving fan control for beverage dispensing systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9316630A GB2280971A (en) 1993-08-09 1993-08-09 Drink dispenser refrigeration system

Publications (2)

Publication Number Publication Date
GB9316630D0 GB9316630D0 (en) 1993-09-29
GB2280971A true GB2280971A (en) 1995-02-15

Family

ID=10740283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9316630A Withdrawn GB2280971A (en) 1993-08-09 1993-08-09 Drink dispenser refrigeration system

Country Status (2)

Country Link
DE (1) DE4428008A1 (en)
GB (1) GB2280971A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0740118A1 (en) * 1995-04-26 1996-10-30 Carrier Corporation Multi-split fan control
CN102269173A (en) * 2011-06-10 2011-12-07 海信（北京）电器有限公司 Control device and method of direct current fan for refrigerator
CN105090084A (en) * 2015-08-31 2015-11-25 上海宝钢节能环保技术有限公司 Draught fan online monitoring system and method
CN107642497A (en) * 2017-09-14 2018-01-30 温岭市大洋电器厂 A kind of fan speed regulation control system based on Stress control
CN110966824A (en) * 2019-11-12 2020-04-07 珠海格力电器股份有限公司 Refrigerator control method with quick freezing and explosion-proof functions, computer-readable storage medium and refrigerator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10128348B4 (en) * 2001-06-13 2006-12-07 Glasbau Hahn Gmbh + Co Kg Method for air conditioning a showcase and apparatus for carrying out the method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720932A (en) *
GB583372A (en) * 1944-06-07 1946-12-17 Gen Motors Corp Improved refrigeration apparatus
GB1169015A (en) * 1965-10-22 1969-10-29 Smith Corp A O Condition Responsive Motor Control
EP0066553A1 (en) * 1981-05-15 1982-12-08 INDESIT S.r.l. Control system for improving the efficiency of cooling or heating appliances
EP0540874A2 (en) * 1991-11-08 1993-05-12 Whirlpool Europe B.V. Operating and control device for a motor-driven fan in a refrigerator, particularly of the forced air circulation
US5255530A (en) * 1992-11-09 1993-10-26 Whirlpool Corporation System of two zone refrigerator temperature control

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720932A (en) *
GB583372A (en) * 1944-06-07 1946-12-17 Gen Motors Corp Improved refrigeration apparatus
GB1169015A (en) * 1965-10-22 1969-10-29 Smith Corp A O Condition Responsive Motor Control
EP0066553A1 (en) * 1981-05-15 1982-12-08 INDESIT S.r.l. Control system for improving the efficiency of cooling or heating appliances
EP0540874A2 (en) * 1991-11-08 1993-05-12 Whirlpool Europe B.V. Operating and control device for a motor-driven fan in a refrigerator, particularly of the forced air circulation
US5255530A (en) * 1992-11-09 1993-10-26 Whirlpool Corporation System of two zone refrigerator temperature control

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0740118A1 (en) * 1995-04-26 1996-10-30 Carrier Corporation Multi-split fan control
CN102269173A (en) * 2011-06-10 2011-12-07 海信（北京）电器有限公司 Control device and method of direct current fan for refrigerator
CN102269173B (en) * 2011-06-10 2016-06-08 海信（山东）冰箱有限公司 The control device of a kind of direct current fan for refrigerator and method thereof
CN105090084A (en) * 2015-08-31 2015-11-25 上海宝钢节能环保技术有限公司 Draught fan online monitoring system and method
CN105090084B (en) * 2015-08-31 2017-01-18 上海宝钢节能环保技术有限公司 Draught fan online monitoring system and method
CN107642497A (en) * 2017-09-14 2018-01-30 温岭市大洋电器厂 A kind of fan speed regulation control system based on Stress control
CN110966824A (en) * 2019-11-12 2020-04-07 珠海格力电器股份有限公司 Refrigerator control method with quick freezing and explosion-proof functions, computer-readable storage medium and refrigerator

Also Published As

Publication number Publication date
GB9316630D0 (en) 1993-09-29
DE4428008A1 (en) 1995-02-16

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)