CN103874896A - Refrigerator and method of operating refrigeration system - Google Patents
Refrigerator and method of operating refrigeration system Download PDFInfo
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- CN103874896A CN103874896A CN201180073953.5A CN201180073953A CN103874896A CN 103874896 A CN103874896 A CN 103874896A CN 201180073953 A CN201180073953 A CN 201180073953A CN 103874896 A CN103874896 A CN 103874896A
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- 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
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
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- 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
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- 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
- F25B49/022—Compressor control arrangements
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- 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
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
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- 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
- F25B2500/00—Problems to be solved
- F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
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- 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
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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- 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
- F25B2600/02—Compressor control
- F25B2600/026—Compressor control by controlling unloaders
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- 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
- F25B2600/25—Control of valves
- F25B2600/2519—On-off valves
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- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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- 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
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- 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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A refrigeration system 4 controlled by a control system 26, wherein the refrigeration system 4 comprises: an evaporator 8, a compressor 10, a condenser 12, and an expansion arrangement 15.The control system 26 is adapted: to establish a momentary cooling requirement based on the differential between a set-point temperature and an actual temperature averaged over time, to forma requirement variable relating to the momentary cooling requirement, to fix a first duration during which the compressor is switched on and a second duration during which the compressor is switched off, and to switch on and to switch off the compressor according to the first and second durations. The refrigeration system 4 comprises a first shut-off valve 20. The control system 4 is adapted: to close the first shut-off valve 20 in connection with switching off the compressor 10, and to open the first shut-off valve 20 in connection with switching on the compressor 10.
Description
Technical field
The present invention relates to a kind of for operating the method for refrigeration system.The invention further relates to a kind of refrigerator, this refrigerator comprises a compartment cooling by refrigeration system.
Background
A refrigeration system, the refrigeration system for example using in combination with the family expenses of catching a cold and commercial food storing compartment, comprising: an evaporimeter interconnecting by conduit, compressor, condenser and one are expanded and arranged, for example capillary.The family expenses that this type of is caught a cold and commercial food storing compartment can form the part higher than freezing point refrigerator or the refrigerator that is below the freezing point, and the refrigerator that is below the freezing point is called as refrigerator sometimes.Hereinafter, these two types are all called as refrigerator.
In the time of compressor operating, cold-producing medium circulates in refrigeration system, thereby compression carrys out the gaseous refrigerant in flash-pot.In the time of refrigerant circulation, this gaseous refrigerant is cooled and in condenser, is condensed to liquid condition, and this condenser is arranged at outside this compartment.Then, this liquid refrigerant falls and evaporates from liquid condition in this evaporimeter at the withstanding pressure in arrangement that expands.This evaporimeter is arranged to this compartment in thermal communication.Therefore, this compartment is cooling by this cold-producing medium institute.
Refrigeration system is designed to provide specific cooling capacity.After compressor has moved for a moment, this refrigeration system provides this specific cooling capacity in the time arriving stable " unlatching " state.This specific cooling capacity is higher than the long-term cooling requirement of this compartment.Therefore, this compressor moves and does not move in second duration (, turning off the time period for one) in the first duration (, an opening time section).Opening time section and one turn off the time period and have formed a compressor cycle in refrigeration system operating process.Correspondingly, in operating process, this refrigeration system has been passed through many compressor cycle.The operation of this compressor and Cycle Length thereof depend on the temperature of this compartment interior.The compressor control parameter generally using is a maximum allowable temperature and the minimum temperature in this compartment, and this compressor is activated under this maximum allowable temperature and this compressor is stopped under this minimum temperature.
EP727628 has disclosed control device for controlling temperature in refrigerator and for controlling a kind of method of the temperature in refrigerator.Object is control device and the method in order to be provided for controlling temperature in refrigerator, can control this cooling source to make the minimum energy consumption of this refrigerator by means of this control device and method.This is to require the control algolithm of variable to realize by forming therein one.The variable that requires forming refers to the unlatching duration (above-mentioned opening time section) of this cooling source and the ratio of turning off the duration (above-mentioned turning off the time period) of this cooling source.In addition, use one in time average actual temperature as this actual temperature that is used to form the difference between set point dimension and actual temperature.
In each compressor cycle process, refrigeration system stands loss of cycle.These losses be due to: 1. in the time that the opening time, section started from this evaporimeter imbitition cold-producing medium, rather than gaseous refrigerant.2. in the time that the opening time, section started, before forming hydraulic seal, gaseous refrigerant is pumped through the expansion arrangement in capillary form.3. in the process of opening time section, before equilibrium establishment, condenser and evaporimeter are loaded inadequately.4. in the process of turning off the time period, gaseous state and liquid refrigerant enter this evaporimeter by this expansion arrangement.In addition, may require high starting current according to the type of compressor operation, this may cause damage in the system that comprises refrigeration system.
In the refrigeration system of the compressor cycle time operation with long, compared with the total power consumption of this refrigeration system, loss of cycle is insignificant.But in the refrigeration system of operation cycle time with short, loss of cycle possibly a large portion of the total power consumption to this refrigeration system is responsible for.In refrigerator, reduce for many years energy resource consumption is a target always.For example, european union directive 92/75/EC has set up an energy that is specially adapted to refrigerator and has consumed code scheme.Therefore, good energy consumption grading is that refrigerator producer earnestly wishes.
Control device in EP727628 and method are not considered the loss of cycle in relevant refrigeration system.
In WO2006/044787, mentioned a pressure equalization system, this pressure equalization system has solved HVAC(HVAC) the distinctive problem of system.The title that combines with this background, pressure in the time of this compressor shut-down operation, be tending towards between low pressure and high-pressure side, occur balanced and in the time starting requirement in the refrigeration cycle, need energy in compressor, to produce high pressure.But in HVAC system, in the process of turning off the time period of this compressor pressure not between condenser device and evaporimeter (high-pressure side of this refrigeration system and low-pressure side) generation balanced.This has caused the extra parts of needs, and these parts can be realized high pressure differential in the time of this compressor start.The pressure equalization system of WO2006/044787 comprises the vent port that the low-pressure side of the high-pressure side of this compressor and this compressor (outlet of compressor and the entrance of compressor) is interconnected.By this vent port, can be by the stress level equilibrium in this compressor to this low pressure grade.Therefore, this compressor can start under the condition of low pressure differential.Correspondingly, drive the electrical system of this compressor without any need for expensive start-up capacitance device or starting relay.
In the refrigeration system of some types, need to fall low-energy-consumption.
General introduction
Correspondingly, an object of the present invention is further to reduce the energy consumption in refrigeration system.
According to an aspect, this object is to realize for the method that operates refrigeration system by a kind of, and wherein this refrigeration system comprises:
-be adapted to be and have a compartment to be cooled evaporimeter in thermal communication by being arranged to one,
-mono-compressor,
-mono-condenser,
-mono-arrangement of expanding, and
-multiple conduits that this evaporimeter, this compressor, this condenser and this expansion arrangement are interconnected.The method comprises:
-based on a set point temperatures and one the instantaneous cooling requirement that the difference between average actual temperature is set up this compartment in time,
-forming relevant with the requirement of this instantaneous cooling one to require variable, this requires variable is the ratio between the duration of turning off of unlatching duration of this compressor and this compressor,
-require variable to fix first duration and second duration based on this, in the process of the first duration this compressor be open and in the process of the second duration this compressor turn off, and
-open and turn off this compressor according to this first and second duration.This refrigeration system further comprises first stop valve being arranged in the conduit extending between this condenser and this evaporimeter.The method further comprises:
-combine to close this first stop valve with turning off this compressor, and
-combine to open this first stop valve with this compressor of unlatching.
Due to consuming from energy a kind of method of the refrigeration Cycle Length that provides best angle, further first stop valve is closed and no longer again opened in the time that this compressor is switched off the pressure differential between condenser and the evaporimeter that is maintained this refrigeration system until this compressor opens again in the time that this compressor does not move, therefore at least in large degree, avoided the loss of cycle (as according to 1-4 point set forth above) in this refrigeration system.Therefore, above-mentioned purpose is implemented.
This refrigeration system and compartment can form a refrigerator, for example, for the part of family expenses or the commercial refrigeration device of food.For example, this mean temperature can or be calculated in a regular time section in multiple compressor cycle.Feature " the unlatching duration of this compressor and this compressor turn off the ratio between the duration " has contained two kinds of substituting calculating of this ratio,, the unlatching duration of this compressor is with respect to turning off duration and the duration of turning off with respect to opening the duration.The unlatching duration in this compressor requires variable can be applied to a compressor cycle length to set up this first duration and this second duration with this of form of the ratio of turning off the duration.This compressor cycle length can be fix or can repeatedly set, for example, to maintain the multiple compressor cycle of each time quantum within the time interval of an appointment, for example as 8 of 1 – cycle/hour.More precisely, having arranged therein this conduit of this first stop valve is the conduit that has also arranged therein this expansion to arrange.
According to multiple embodiment, this refrigeration system can comprise that this compartment and this compartment can be adapted to for domestic food and store.In this way, this refrigeration system and this compartment can form a part for Domestic refrigerator.
According to multiple embodiment, this compressor can be a single speed compressor, this single speed compressor by a control system control to move with a constant speed in the process of this first duration.Owing to the method, can operate a relatively simple compressor in a kind of mode of economy.Because this first stop valve in the process of this second duration is closed, this compressor and more properly drive the motor of this compressor can be equipped with start-up capacitance device and/or a starting relay and/or other devices for starting under the poor condition of dominant high pressure between the entrance side at this compressor and outlet side.
According to multiple embodiment, this refrigeration system further can comprise a valve arrangement and a by-pass conduit, in the conduit of this valve arrangement between this compressor and this condenser and this by-pass conduit between the outlet side of this compressor and the entrance side of this compressor, extend.The method further can comprise:
-in the process of this second duration, make the equalize pressure differences between outlet side and the entrance side of this compressor.For example, in this way, can under the condition of low pressure differential, start a single speed compressor and can omit a start-up capacitance device or other devices, because the pressure differential between the entrance side of this compressor and outlet side is passed through this by-pass conduit by balanced.
According to multiple embodiment, this valve arrangement can comprise that a check-valves and this refrigeration system further can comprise second stop valve being arranged in this by-pass conduit.The method further can comprise:
-in the process of this first duration, maintain this second stop valve to close, and
-in the process of this second duration, open this second stop valve to make this equalize pressure differences described in realizing.
According to multiple embodiment, this valve arrangement can comprise one 3 logical valve, and this 3 logical valve is connected on this by-pass conduit.Described this equalize pressure differences that makes can comprise:
-open being connected and closing being connected between this compressor and this condenser between the outlet side of this compressor and this by-pass conduit by means of this 3 logical valve.The method further can comprise:
-in the process of this first duration, close being connected and opening being connected between this compressor and this condenser between the outlet side of this compressor and this by-pass conduit by means of this 3 logical valve.
According to multiple embodiment, this expansion arrangement can comprise a capillary.
According to multiple embodiment, this first stop valve can form the part that this expansion arranges.
According to multiple embodiment, this first duration and this second duration can have altogether the length between 1-100 minute., this compressor cycle can have described length.According to other embodiment, this first duration and this second duration can have altogether the length between 3-30 minute.Generally, short the first and second duration of total, that is, short compressor cycle length is favourable from the angle of energy consumption.In addition, short compressor cycle length allows the cooling compartment interior of this evaporimeter to have more uniform air themperature.In addition, can realize the more air of high humility that has in this compartment.
According to multiple embodiment, this compressor can be adapted to according to ASHRAE LBP or HMBP standard the cooling capacity between 10-500W is provided.According to other embodiment, this compressor can be adapted to for ASHRAE LBP or HMBP standard the cooling capacity between 20-300W is provided.This type of compressor can provide enough cooling capacities for most of Domestic refrigerator application.
According to an other aspect, above-mentioned purpose further realizes by a refrigerator, and this refrigerator comprises that wherein this refrigeration system comprises by the next cooling compartment of refrigerator system of a control system control:
An evaporimeter, this evaporimeter is arranged to this compartment in thermal communication; A compressor; A condenser; The arrangement of expanding; And multiple conduits that this evaporimeter, this compressor, this condenser and this expansion arrangement are interconnected.This control system be adapted to for:
-based on a set point temperatures and one the instantaneous cooling requirement that the difference between average actual temperature is set up this compartment in time,
-forming relevant with the requirement of this instantaneous cooling one to require variable, this requires variable is the ratio between the duration of turning off of unlatching duration of this compressor and this compressor,
-require variable to fix first duration and second duration based on this, in the first duration this compressor be open and in the second duration this compressor turn off, and
-open and turn off this compressor according to this first and second duration.This refrigeration system comprises first stop valve being arranged in the conduit extending between this condenser and this evaporimeter, and this control system be further adapted to for:
-combine to close this first stop valve with turning off this compressor, and
-combine to open this first stop valve with this compressor of unlatching.
Multiple embodiment that refrigeration system above-mentioned and the method and the method is relevant can implement in a refrigerator.
According to multiple embodiment, this compressor can be a single speed compressor, this single speed compressor by this control system control to move with a constant speed in the process of this first duration.
According to multiple embodiment, this refrigeration system further can comprise a valve arrangement and a by-pass conduit, in the conduit of this valve arrangement between this compressor and this condenser and this by-pass conduit between the outlet side of this compressor and the entrance side of this compressor, extend.
According to multiple embodiment, this valve arrangement can comprise that a check-valves and this refrigeration system further can comprise second stop valve being arranged in this by-pass conduit, and wherein this control system can be adapted to for:
-in the process of this first duration, maintain this second stop valve to close, and
-in the process of this second duration, open this second stop valve to make the equalize pressure differences between outlet side and the entrance side of this compressor in the process of this second duration.
According to multiple embodiment, this valve arrangement can comprise one 3 logical valve, and this 3 logical valve is connected on this by-pass conduit.This control system can be adapted to for:
-in the process of this second duration, open being connected and closing being connected between this compressor and this condenser between the outlet side of this compressor and this by-pass conduit by means of this 3 logical valve, and
-in the process of this first duration, close being connected and opening being connected between this compressor and this condenser between the outlet side of this compressor and this by-pass conduit by means of this 3 logical valve.
According to multiple embodiment, this compressor can be alternatively a variable speed compressor, this variable speed compressor by this control system control in case in the process of this first duration with change speed move.In this way, can be provided in a compressor that can start under high pressure differential condition.
According to multiple embodiment, this refrigeration system can comprise a filter, and this filter is arranged in a conduit between this condenser and this expansion arrangement.
According to multiple embodiment, this first stop valve can be arranged in a conduit between this filter and this expansion arrangement.Can guarantee in this way, in the time combining to open this first stop valve with this compressor of unlatching, liquid refrigerant will flow in this expansion arrangement.
By research appending claims and detailed description below, further feature and advantage of the present invention will become clear.Those skilled in the art will recognize, not depart from as defined by the appended claims in scope situation of the present invention, and different characteristic of the present invention can be combined to create the embodiment that is different from following those embodiment of description.
Brief Description Of Drawings
From following detailed description and accompanying drawing, will readily appreciate that different aspect of the present invention, comprise its specific features and advantage, in the accompanying drawings:
Fig. 1 schematically shown according to multiple embodiment refrigerator and according to multiple embodiment refrigeration system,
Fig. 2 has shown a kind of for operating the method for refrigeration system according to multiple embodiment,
Fig. 3 and 4 has shown the multiple parts according to the refrigeration system of multiple embodiment, and
Fig. 5 has shown according to multiple embodiment refrigeration system.
Describe in detail
Now will be by the present invention being described more fully with reference to accompanying drawing, at these shown in the drawings of multiple exemplary embodiments.But the present invention should not be construed as limited to these embodiment listed herein.As those skilled in the art hold intelligiblely, can combine the disclosure feature of multiple exemplary embodiments.From start to finish, identical numeral refers to identical element.
For brevity and/or clarity, known function or structure needn't be described in detail.
Fig. 1 has schematically shown according to multiple embodiment refrigerator 2 and according to multiple embodiment refrigeration system 4.This refrigerator 2 comprises this refrigeration system 4 and a compartment 6, and this compartment is for example for storage food.This refrigeration system 4 comprises that an evaporimeter 8, compressor 10, condenser 12, a filter 14 and of containing a capillary 16 are expanded and arranges 15.Arrange multiple conduits for the above-mentioned parts of this refrigeration system 4 are interconnected.Correspondingly, filter 14 is arranged at this condenser 12 and this expansion and arranges in a conduit of extension between 15.
Cold-producing medium circulates in this refrigeration system 4.The circulation of this cold-producing medium is to be driven by the pressure differential between this condenser 12 and this evaporimeter 8.This pressure differential is produced by these compressor 10 compressed gaseous cold-producing mediums, and this gaseous refrigerant comes from liquid refrigerant evaporates in evaporimeter 8.This gaseous refrigerant is cooled and is condensed to liquid condition in this condenser 12.This liquid refrigerant is through this filter 14, and this filter can be collected chip and the water in this cold-producing medium.In this expansion arranges 15, this liquid refrigerant withstanding pressure falls and in this evaporimeter 8, evaporates from liquid condition subsequently.This evaporimeter 8 be arranged to this compartment 6 in thermal communication and therefore in the time that cold-producing medium evaporates in this evaporimeter 8 by cooling this compartment 6.
This refrigeration system 4 further comprises first stop valve 20 being arranged in first conduit 22, and this first conduit extends between this condenser 12 and this evaporimeter 8, that is, also having comprised expands arranges a conduit 22 of 15.This first stop valve 20 is arranged at this filter 14 and this expansion arranges in the first conduit 22 between 15.This first conduit 22 can cut out by means of this first stop valve 20.This first stop valve 20 has two discrete positions: a complete closed position and a fully open position.
A motor 24 drives this compressor 10.Arrange a control system 26 for controlling the operation of this refrigeration system 4.This control system 26 can comprise a microprocessor that is programmed the operation for controlling this refrigeration system 4.Alternatively, this control system 26 can multiple discrete electrical components, and these electrical components are connected to control this refrigeration system 4.This control system 26 further comprises the temperature sensor 28 being arranged in this compartment 6 and is connected on this motor 24 to control this compressor 10 and be connected on this first stop valve 20.Can in this control system 26, preset the control parameter of this refrigeration system 4.Alternatively, can set at least some by a control panel 30 and control parameter.
Fig. 2 has shown a kind of for operating the method for refrigeration system according to multiple embodiment.This refrigeration system can be one as in conjunction with the illustrated refrigeration system 4 of Fig. 1.The method comprises:
-based on a set point temperatures and one the instantaneous cooling requirement that the difference between average actual temperature is set up 100 these compartments 6 in time.For example can in this control system 26, set this set point temperatures by means of this control panel 30.This in time average temperature can be calculated by the measured temperature of the temperature sensor 28 with in this compartment 6 by this control system 26.Describedly set up 100 these instantaneous cooling requirements and can comprise that setting up simply this refrigeration system 4 will be unlocked or turn off, that is, this compressor 10 should move still and not move.
One that-formation 102 is relevant to this instantaneous cooling requirement requires variable.This requires variable can be the ratio between the duration of turning off of unlatching duration of this compressor 10 and this compressor 10.
-require variable to fix 104 1 the first duration and second duration based on this, in the process of the first duration this compressor 10 be open and in the process of the second duration in this compressor 10 turn off.For example, be to turn off the duration the 40% unlatching duration and 60% if compressor cycle length is 20 minutes and this refrigeration variable, this first duration is that 8 minutes and this second duration are 12 minutes.
-open 106 and turn off 108 these compressors 10 according to this first and second duration.This control system 26 is adapted to for by opening and turning off this motor 24 and open and turn off this compressor 10.
-with turn off this compressor 10 and combine to close 110 these first stop valves 20.
-combine to open 112 these first stop valves 20 with this compressor 10 of unlatching.
Can be clear that, in a kind of refrigeration system of the first stop valve not operating according to this method, pressure in the process of turning off the duration of this compressor between this condenser 12 and this evaporimeter 8 arranges 15 and gradually by balanced by this expansion, this has caused loss of cycle, discusses in 1-4 point as initial.
Favourable according to the refrigeration system 4 of this method operation, this is because first, require variable and mean temperature in time owing to having used, allow this compressor 10 to move the process of best duration from this refrigeration system of angle of cooling requirement and energy consumption.Secondly,, owing to closing and open this first stop valve 20, at least in large degree, can avoid the loss of cycle in this refrigeration system 4.Therefore,, by optimizing operation characteristic and passing through to eliminate loss of cycle, the method allows refrigeration system 4 to operate with low energy consumption.
With reference in conjunction with the disclosed method of Fig. 2, corresponding drawing, control system 26 demonstrated in Figure 1 be adapted to for:
-based on a set point temperatures and one the instantaneous cooling requirement that the difference between average actual temperature is set up this compartment 6 in time,
-forming relevant with the requirement of this instantaneous cooling one to require variable, this requires variable is the ratio between the duration of turning off of unlatching duration of this compressor 10 and this compressor 10,
-require variable to fix first duration and second duration based on this, in the process of this first duration this compressor 10 be open and in the process of this second duration this compressor 10 turn off,
-open and turn off this compressor 10 according to this first and second duration,
-combine to close this first stop valve 20 with turning off this compressor 10, and
-combine to open this first stop valve 20 with this compressor 10 of unlatching.
This compressor 10 can be a single speed compressor, and this single speed compressor is controlled to move with a constant speed in the process of this first duration by this control system 26., this motor 24 only has a service speed and this control system 26 and is adapted to for opening and turning off this motor 24.This control system 26 can comprise a start-up capacitance device and/or a starting relay, starts this compressor 10 to can and maintain (this is because this first stop valve 20 in the process of the second duration in the time that this compressor 10 is switched off is closed) high pressure at the outlet side of this compressor reducer in this condenser 12.
Alternatively, this compressor 10 can be a variable speed compressor, and this variable speed compressor is controlled by this control system 26 to move with the speed changing in the process of this first duration., this control system can be in the process of first duration with at least two different speed or alternatively carry out service meter 24 with a constant speed and in the process of next the first duration with a different constant speed in the process of first duration.In a rear replacement scheme, can specify the variable that requires of the method is maintained in the interval of an appointment.If this requires variable outside the interval of this appointment, in next the first duration according to this require variable be higher than or increase or reduce this constant speed lower than the interval of this appointment.Variable speed compressor and motor thereof are adapted to opposing condenser 12(, the outlet side of this compressor 10) with evaporimeter 8(, the entrance side of this compressor 10) between high pressure differential and start.
This compressor 10(single speed or speed change) can be adapted to according to ASHRAE LBP or HMBP standard (Xia 55 degrees Celsius of condensation temperatures He under 23.3 degrees Celsius of evaporating temperatures of –) cooling capacity between 10-500W is provided.More precisely, in some applications, this compressor 10 can be adapted to according to ASHRAE LBP or HMBP standard the cooling capacity between 20-300W is provided.This first duration and this second duration can have altogether the length between 1-100 minute, and this compressor cycle can have the length of 1-100 minute.More precisely, this first duration and this second duration can have altogether the length between 3-30 minute.
Fig. 3 has shown according to a part for the refrigeration system 4 of multiple embodiment.According to these embodiment, a solution is provided, this solution allows for example single speed compressor of compressor 10() under the condition of low pressure difference, start, although be that high pressure is preponderated in the condenser 12 in the downstream that is arranged at this compressor 10.The valve that this refrigeration system 4 is included in a conduit 34 between compressor 10 and condenser 12 arranges 32.A by-pass conduit 36 extends between the outlet side of compressor 10 and the entrance side of compressor 10.This valve arrangement 32 comprises a check-valves 38.In this by-pass conduit 36, arrange second stop valve 40.In the time that this second stop valve 40 is opened, any pressure differential between the entrance side of compressor 10 and outlet side is all by the balanced dominant pressure of entrance side to being essentially at this compressor 10.This check-valves 38 has guaranteed that the high pressure in this condenser 10 can not be balanced from these condenser 10 quilts in the upstream direction.
This second stop valve 40 is connected in the control system 26 of this refrigeration system 4.This control system 26 be adapted to for:
-in the process of first duration in the time that this compressor 10 moves, maintain this second stop valve 40 to close, and
-in the process of second duration, open this second stop valve 40 to make the equalize pressure differences between outlet side and the entrance side of this compressor 10 in the process of the second duration in the time that this compressor 10 does not move.
Correspondingly, the method that Fig. 2 shows may further include:
-in the process of this second duration, make the equalize pressure differences 114 between outlet side and the entrance side of this compressor 10.
-in the process of this second duration, open 116 these second stop valves 40 to make the pressure differential between outlet side and the entrance side of this compressor 10 realize described balanced 114 in the process of this second duration.
-in the process of this first duration, maintain 118 these second stop valves 40 to close.
Fig. 4 has shown according to a part for the refrigeration system 4 of multiple embodiment.These embodiment also provide a solution, and this solution allows compressor 10 to start under the condition of low pressure differential, although be that high pressure is preponderated in condenser 12.The valve that this refrigeration system 4 is included in a conduit 34 between compressor 10 and condenser 12 arranges 32.A by-pass conduit 36 extends between the outlet side of compressor 10 and the entrance side of compressor 10.By this by-pass conduit 36, any pressure differential between the entrance side of compressor 10 and outlet side can be by the balanced dominant pressure of entrance side to being essentially at this compressor 10.This valve arrangement 32 comprises one 3 logical valve 42.This 3 logical valve is connected on this by-pass conduit 36.
This 3 logical valve is connected in the control system 26 of this refrigeration system 4.This control system 26 be adapted to for:
-in the process of the second duration in the time that this compressor 10 does not move, open being connected and closing being connected between this compressor 10 and this condenser 12 between the outlet side of this compressor 10 and this by-pass conduit 36 by means of this 3 logical valve 42, to make isostasy by this by-pass conduit 36, and
-in the process of the first duration in the time that this compressor 10 moves, close being connected and opening being connected between this compressor 10 and this condenser 12 between the outlet side of this compressor 10 and this by-pass conduit 26 by means of this 3 logical valve.
Correspondingly, the method that Fig. 2 shows can comprise:
-in the process of this second duration, make the equalize pressure differences 114 between outlet side and the entrance side of this compressor 10, described in this equalize pressure differences 114 is comprised:
-open being connected and closing being connected between 122 these compressors 10 and this condenser 12 between the outlet side of 120 these compressors 10 and this by-pass conduit 36 by means of this 3 logical valve 42.
The method may further include:
-in the process of this first duration, close being connected and opening being connected between 126 these compressors 10 and this condenser 12 between the outlet side of 124 these compressors 10 and this by-pass conduit 36 by means of this 3 logical valve 42.
Owing to according to these embodiment of Fig. 3 and 4, constant-speed compressor is without any need for start-up capacitance device or allow other devices that start, although be that high pressure is preponderated in condenser 12.Fig. 3 and 4 embodiment can be for according in the refrigeration systems 4 of Fig. 1 and 5.
Fig. 5 has shown according to multiple embodiment refrigeration system 4.This refrigeration system 4 comprises that an evaporimeter 8, compressor 10, condenser 12 and one are expanded and arranges 15.This expansion arrangement 15 comprises first stop valve 20, or in other words, this first stop valve 20 has formed this expansion and arranged a part of 15.Correspondingly, when this compressor reducer 10 moves and when liquid refrigerant evaporates in this evaporimeter 8, this first stop valve 20 plays the effect for the expansion valve of liquid refrigerant.In the time that this compressor 10 does not move, this first stop valve 20 is closed to prevent the loss of cycle in this refrigeration system 4.The control system 26 of this refrigeration system 4 is especially controlled this first stop valve 20.
Can operate a period of time according to the method for multiple embodiment according to the refrigeration system 4 of multiple embodiment.And in the process of other times section, this refrigeration system 4 can operate according to a kind of diverse ways, for example, if the difference between set point temperatures and actual temperature exceedes a threshold value.
Above-described exemplary embodiment and parts can combine according to those skilled in the art's understanding.Correspondingly, at this, for example, during with reference to some parts (start-up capacitance device) relevant to compressor, the motor of this compressor has been comprised in statement " compressor ".
Although describe the present invention with reference to multiple exemplary embodiments, many different change, modifications etc. will become clear to those skilled in the art.For example, the check-valves of Fig. 3 embodiment 38 can be arranged among the conduit extending between evaporimeter 8 and compressor 10, in the upstream of this by-pass conduit 36.Similarly, logical 3 in Fig. 4 embodiment valve 42 can be arranged in the conduit extending between this evaporimeter 8 and this compressor 10 and be connected in the suction port of compressor side of this by-pass conduit 36.
Therefore, will be appreciated that, above content is the displaying to multiple exemplary embodiments and the invention is not restricted to these disclosed specific embodiments, and the combination of the feature of modification, disclosed embodiment and other embodiment to disclosed embodiment is intended to comprise within the scope of the appended claims.
As used herein, term " comprises " or " having comprised " is open and comprises one or more narrated features, element, step, parts or function, but does not get rid of existence or the interpolation of one or more other features, element, step, parts, function or its group.
As used herein, term "and/or" comprise be associated list in one or more any and all combinations.
As used herein, common abbreviation " for example (e.g) " (coming from Latin phrase " exempli gratia ") can be used for introducing or indicating the one or more general example of before described and be not intended to limit this.As used herein, common abbreviation " i.e. (i.e.) " (coming from Latin phrase " id est ") can be used for indicating one concrete from more generally narrating item.
Term is only for describing the object of specific embodiment and not being intended to limit the present invention as used herein.As used herein, singulative " ", " one " and " being somebody's turn to do " are intended to also comprise plural form, unless context separately clearly states.
Unless otherwise defined, otherwise as used herein all terms (comprising technology and scientific terminology) have the identical meanings of generally understanding with those skilled in the art.What will be further understood that is, term (for example defining in common dictionary) should be interpreted as having the implication identical with its implication under the background of association area, and must not in Utopian or too formal meaning, make an explanation, unless defined clearly at this.
Although will be appreciated that term first, second, third, etc. etc. can be for describing different elements, parts, region, layer and/or section at this, these elements, parts, region, layer and/or section should not limited by these terms.These terms are only for distinguishing element, parts, region, layer or a section and another element, parts, region, layer or section.Therefore, the first element, parts, region, layer or the section discussed at this can be called as the second element, parts, region, layer or section, and do not deviate from the content of teaching of the present invention.
Claims (21)
1. for operating a method for refrigeration system (4), wherein this refrigeration system (4) comprising:
An evaporimeter (8), this evaporimeter is adapted to be has compartment to be cooled (6) in thermal communication by being arranged to one; A compressor (10); A condenser (12); The arrangement (15) of expanding; And the multiple conduits that arrange (15) to interconnect this evaporimeter (8), this compressor (10), this condenser (12) and this expansion, wherein the method comprises:
-based on a set point temperatures and one the instantaneous cooling requirement that the difference between average actual temperature is set up (100) this compartment (6) in time,
-forming (102) relevant with the requirement of this instantaneous cooling to require variable, this requires variable is the ratio between the duration of turning off of unlatching duration of this compressor (10) and this compressor (10),
-require variable to fix (104) first duration and second duration based on this, in the process of the first duration this compressor (10) be open and in the process of the second duration this compressor (10) turn off, and
-open (106) and turn off (108) this compressor (10) according to this first and second duration,
It is characterized in that
This refrigeration system (4) comprises first stop valve (20), and this first stop valve is arranged in the conduit extending between this condenser (12) and this evaporimeter (8), and it is characterized in that, the method comprises:
-combine to close (110) this first stop valve (20) with turning off (108) this compressor (10), and
-combine to open (112) this first stop valve (20) with unlatching (106) this compressor (10).
2. method according to claim 1, wherein this refrigeration system (4) comprises that this compartment (6) and this compartment (6) are adapted to for domestic food and stores.
3. according to the method described in any one in claim 1 or 2, wherein this compressor (10) is a single speed compressor, this single speed compressor by a control system control to move with a constant speed in the process of this first duration.
4. method according to claim 3, wherein this refrigeration system (4) further comprises a valve arrangement (32), this valve arrangement is arranged in a conduit between this compressor (10) and this condenser (12), and
A by-pass conduit (36), this by-pass conduit extends between the outlet side of this compressor (10) and the entrance side of this compressor (10), and wherein the method further comprises:
-in the process of this second duration, make the equalize pressure differences (114) between outlet side and the entrance side of this compressor (10).
5. method according to claim 4, wherein this valve arranges (32) to comprise a check-valves (38), and wherein this refrigeration system (4) further comprises second stop valve (40) being arranged in this by-pass conduit (36), and wherein the method further comprises:
-in the process of this first duration, maintain (118) this second stop valve (40) to close, and
-in the process of this second duration, open (116) this second stop valve (40) to make this equalize pressure differences (114) described in realizing.
6. method according to claim 4, wherein this valve arranges (32) to comprise one 3 logical valve (42), and it is upper that this 3 logical valve (42) is connected to this by-pass conduit (36), and wherein said this equalize pressure differences (114) that makes comprising:
-open being connected and closing being connected between (122) this compressor (10) and this condenser (12) between the outlet side of (120) this compressor (10) and this by-pass conduit (36) by means of this 3 logical valve (42), and wherein the method further comprises:
-in the process of this first duration, close being connected and opening being connected between (126) this compressor (10) and this condenser (12) between the outlet side of (124) this compressor (10) and this by-pass conduit (36) by means of this 3 logical valve (42).
7. according to the method described in any one of the preceding claims, wherein this expansion arranges (15) to comprise a capillary (16).
8. according to the method described in any one in claim 1-6, wherein this first stop valve (20) forms a part for this expansion arrangement (15).
9. according to the method described in any one of the preceding claims, wherein this first duration and this second duration have altogether the length between 1-100 minute.
10. according to the method described in any one of the preceding claims, wherein this compressor (10) is adapted to according to ASHRAE LBP or HMBP standard the cooling capacity between 10-500W is provided.
11. 1 kinds of refrigerators, this refrigerator comprises the next cooling compartment (6) of the refrigeration system (4) of being controlled by a control system (26), wherein this refrigeration system (4) comprising:
An evaporimeter (8), this evaporimeter is arranged to this compartment (6) in thermal communication; A compressor (10); A condenser (12); The arrangement (15) of expanding; And the multiple conduits that arrange (15) to interconnect this evaporimeter (8), this compressor (10), this condenser (12) and this expansion, and wherein this control system (26) be adapted to for:
-based on a set point temperatures and one the instantaneous cooling requirement that the difference between average actual temperature is set up this compartment (6) in time,
-forming relevant with the requirement of this instantaneous cooling one to require variable, this requires variable is the ratio between the duration of turning off of unlatching duration of this compressor (10) and this compressor (10),
-require variable to fix first duration and second duration based on this, in the process of this first duration this compressor (10) be open and in the process of this second duration this compressor (10) turn off, and
-open and turn off this compressor (10) according to this first and second duration,
It is characterized in that
This refrigeration system (4) comprises first stop valve (20), this first stop valve is arranged in the conduit extending between this condenser (12) and this evaporimeter (8), and it is characterized in that, this control system (26) be further adapted to for:
-combine to close this first stop valve (20) with turning off this compressor (10), and
-combine to open this first stop valve (20) with this compressor of unlatching (10).
12. refrigerators according to claim 11, wherein this compartment (6) is adapted to for domestic food and stores.
13. according to the refrigerator described in any one in claim 11 or 12, wherein this compressor (10) is a single speed compressor, and this single speed compressor is controlled by this control system (26) to move with a constant speed in the process of this first duration.
14. refrigerators according to claim 13, wherein this refrigeration system (4) further comprises a valve arrangement (32) and a by-pass conduit (36), and a conduit and this by-pass conduit that this valve arrangement is arranged between this compressor (10) and this condenser (12) extend between the outlet side of this compressor (10) and the entrance side of this compressor (10).
15. refrigerators according to claim 14, wherein this valve arranges (32) to comprise a check-valves (38), and this refrigeration system (4) further comprises second stop valve (40) being arranged in this by-pass conduit (36), and wherein this control system (26) be adapted to for:
-in the process of this first duration, maintain this second stop valve (40) to close, and
-in the process of this second duration, open this second stop valve (40) to make the equalize pressure differences between outlet side and the entrance side of this compressor (10) in the process of this second duration.
16. refrigerators according to claim 14, wherein this valve arranges (32) to comprise one 3 logical valve (42), it is upper that this 3 logical valve (42) is connected to this by-pass conduit (36), and wherein this control system (26) be adapted to for:
-in the process of this second duration, open being connected and closing being connected between this compressor (10) and this condenser (12) between the outlet side of this compressor (10) and this by-pass conduit (36) by means of this 3 logical valve (42), and
-in the process of this first duration, close being connected and opening being connected between this compressor (10) and this condenser (12) between the outlet side of this compressor (10) and this by-pass conduit (36) by means of this 3 logical valve (42).
17. according to the refrigerator described in any one in claim 11 or 12, and wherein this compressor (10) is a variable speed compressor, and this variable speed compressor is controlled by this control system (26) so that the speed operation to change in the process of this first duration.
18. according to claim 11 to the refrigerator described in any one in 17, and wherein this expansion arranges (15) to comprise a capillary (16).
19. according to claim 11 to the refrigerator described in any one in 17, and wherein this first stop valve (20) forms this expansion and arrange the part of (15).
20. according to claim 11 to the refrigerator described in any one in 19, and wherein this refrigeration system (4) comprises a filter (14), and this filter is arranged at this condenser (12) and this expansion arranges in a conduit between (15).
21. refrigerators according to claim 20, wherein this first stop valve (20) is arranged in a conduit between this filter (14) and this expansion arrangement (15).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2011/067213 WO2013050055A1 (en) | 2011-10-03 | 2011-10-03 | Refrigerator and method of operating refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103874896A true CN103874896A (en) | 2014-06-18 |
Family
ID=44720908
Family Applications (1)
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|---|---|---|---|
| CN201180073953.5A Pending CN103874896A (en) | 2011-10-03 | 2011-10-03 | Refrigerator and method of operating refrigeration system |
Country Status (8)
| Country | Link |
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| US (2) | US20140318161A1 (en) |
| EP (1) | EP2764304A1 (en) |
| KR (1) | KR20140071411A (en) |
| CN (1) | CN103874896A (en) |
| AU (1) | AU2011378695B2 (en) |
| BR (1) | BR112014007624A2 (en) |
| RU (1) | RU2562834C1 (en) |
| WO (1) | WO2013050055A1 (en) |
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| CN107923677A (en) * | 2015-08-17 | 2018-04-17 | 伊莱克斯电器股份公司 | Control method for cooling device |
| CN112400088A (en) * | 2018-07-11 | 2021-02-23 | 安吉拉通力测试技术有限公司简称Att有限公司 | Refrigeration device and associated operating method |
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| US8011191B2 (en) | 2009-09-30 | 2011-09-06 | Thermo Fisher Scientific (Asheville) Llc | Refrigeration system having a variable speed compressor |
| WO2015086058A1 (en) * | 2013-12-11 | 2015-06-18 | Electrolux Appliances Aktiebolag | Refrigerator apparatus and method for control thereof |
| DE102014200977A1 (en) * | 2014-01-21 | 2015-07-23 | BSH Hausgeräte GmbH | Refrigeration circuit for a household refrigerating appliance, household refrigerating appliance with a refrigeration cycle and method for operating a refrigeration cycle of a household refrigerating appliance |
| CN107683395B (en) | 2015-06-08 | 2020-10-27 | 伊莱克斯电器股份公司 | Cooling system and control method thereof |
| US20170174049A1 (en) * | 2015-12-21 | 2017-06-22 | Ford Global Technologies, Llc | Dynamically controlled vapor compression cooling system with centrifugal compressor |
| BR102017010629B1 (en) * | 2017-05-19 | 2024-04-30 | Nidec Global Appliance Brasil Ltda | POSITIVE DISPLACEMENT HERMETIC COMPRESSOR |
| US11300339B2 (en) | 2018-04-05 | 2022-04-12 | Carrier Corporation | Method for optimizing pressure equalization in refrigeration equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013050055A1 (en) | 2013-04-11 |
| BR112014007624A2 (en) | 2017-04-18 |
| US20140318161A1 (en) | 2014-10-30 |
| US20170159983A1 (en) | 2017-06-08 |
| EP2764304A1 (en) | 2014-08-13 |
| KR20140071411A (en) | 2014-06-11 |
| AU2011378695A1 (en) | 2014-04-17 |
| RU2562834C1 (en) | 2015-09-10 |
| AU2011378695B2 (en) | 2017-07-27 |
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