CN100538220C - cooling device and control method - Google Patents
cooling device and control method Download PDFInfo
- Publication number
- CN100538220C CN100538220C CNB2006800188033A CN200680018803A CN100538220C CN 100538220 C CN100538220 C CN 100538220C CN B2006800188033 A CNB2006800188033 A CN B2006800188033A CN 200680018803 A CN200680018803 A CN 200680018803A CN 100538220 C CN100538220 C CN 100538220C
- Authority
- CN
- China
- Prior art keywords
- compressor
- period
- thermostat
- thermal protector
- electric current
- 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.)
- Expired - Fee Related
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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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
- F25B49/025—Motor control arrangements
-
- 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
- F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage
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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
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21153—Temperatures of a compressor or the drive means therefor of electronic components
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Temperature (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Sampling And Sample Adjustment (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The present invention relates to a kind of cooling device (1) and control method thereof, it utilizes the unforeseen stall of the motor of the variable speed compressor (2) of having been avoided the execution kind of refrigeration cycle by the control method of control card (5) execution, this stall maybe can not be responded and causes by overheated thermodynamic load, this thermodynamic load is done load by heavy industry, such as high environment temperature or open or close continually the door and cause.
Description
Technical field
The present invention relates to a kind of cooling device, it is included in the compressor that plays a role effectively under the heavy running load.
Background technology
In cooling device, the selection of the compressor in the cooling system will be considered the limit service condition according to the climatic province, so the capacity of compressor can be greater than needed capacity, because must consider possible maximum running load.The capacity of compressor can cause the startup that quantity increases-stop and the circulation loss that increases greater than needed capacity.In order to overcome this situation, the selection of compressor is made according to the condition of work of reality, this actual condition of work has been crossed over the more most of of compressor life expectancy, and the speed of compressor, the velocity of rotation (rpm) that is compressor motor changes in some cases, and this moment, cooling device should be worked under maximum conditions.Utilized the compressor motor of variable velocity in cooling device, to design the various control algorithm, should when play a role with normal speed with definite compressor, and play a role with more speed when.When cooling device runs under the heavy service condition, such as high environment temperature or frequent open and when closing it, compressor speed is accelerated under the help of electronic package (electronic card).In this case, compressor is by electronic package rather than network electric power and carry out feed (feed).Sometimes may have overheated or stall (stall), because the cause that can not under heavy service condition, respond thermodynamic load, thereby unforeseen stall in the compressor of feed, caused by electronic package.When compressor brought into operation after stall, because the cause that algorithm requires, disconnection repeated continuously, and the disconnection of high frequent causes efficient to reduce.
In U.S. Pat 6231306, gas-turbine engine comprises instrument, it is used for the stall of induced compression machine, the signal that receives the self-sensing device is assessed, and the signal the sensed threshold value with the predetermined normal compressor of expression is compared, and be used to provide indication to be about to take place the signal of the processing of stall situation.
In U.S. Pat 6532433, in the method that is used for monitoring and controlling compressor, at least one compressor operation parameters is monitored, so that obtain time series data, and this time series data filters by kalman filter.As the result of this method for monitoring, the stall tendency of compressor under heavy duty is detected between compressor stall.
In BP GB2292847, in utilizing the single-phase induction motor of compressor, current detector detects the stall of motor under high capacity, and relay cuts off power supply from capacitor.
In BP GB1109346, in refrigeration compressor, starting drive plays a role so that keep exciting of auxiliary winding after motor starting, thereby the extreme starting torque of the compressor in overcoming for a long time, thereby the operation moment of torsion (running torque) of guaranteeing compressor will drop to the low numerical value of normal stall moment of torsion (stalling torque) than motor.
Summary of the invention
The objective of the invention is to realize cooling device and control method, the unforeseen continuous stall of compressor is avoided at this.
Cooling device and control method are used to obtain purpose of the present invention, and the motor electronic plug-in unit can in the start and stop stage, and move compressor motor in high capacity with down high-speed under the instruction of thermostat.
When compressor continued to move in the continuous stop and start stage, by network feed a period of time, and compressor motor played a role with constant speed this compressor when each the startup.Therefore, the electronic circuit of control motor speed has been provided protection, prevents the high electric current that obtains when starting.
In compressor operating, because thermostat produces halt instruction overheated cause before, the thermal protector that motor temperature is detected can cut off the electric current of feeding, so that stop compressor.
Because thermal protector has been closed electric current, if detecting compressor, electronic package stops, can reaching a conclusion so: this is the situation of the unforeseen stall that caused by the heavy duty condition.
When compressor is prepared to start operation once more, before starting, consume one period predetermined wait period, thereby stall is not repeated, and because the reducing of the pressure imbalance in this period between the pumping unit of compressor and the compression section, compressor can more easily startup this stop phase after.
After compressor is being waited for certain period and when bringing into operation, it carries out feed by network electric power, thus the operation period that generation has constant speed, and this operation period is longer than the period when it brings into operation along with the signal of thermostat.
When compressor after unforeseen stall period and when operation; whether thermal protector is opened should be detected immediately; therefore the independent heat sensor that utilizes the temperature to thermal protector to detect is useful to the thermal protector data are sent to electronic package.
Description of drawings
The cooling device and the control method that are used for obtaining the object of the invention are showed in accompanying drawing, wherein,
Fig. 1 is the schematic diagram of cooling device.
Fig. 2 is the flow chart of control method.
Fig. 3 is the Velocity-time figure and the temperature-time graph of cooling device compressor operating.
The element marking that is showed among the figure is as follows:
1. cooling device
2. compressor
3. thermal protector
4. thermostat
5. electronic package
6. thermal protector heat sensor
The specific embodiment
Cooling device 1 comprises the compressor 2 of the variable velocity that is used to carry out kind of refrigeration cycle; The thermal protector 3 that the temperature of compressor 2 is detected, this thermal protector 3 is opened when numerical value is higher than preset temperature, and close current I, so that stop the operation of compressor 2, and this thermal protector 3 is closed when numerical value is lower than preset temperature, so that restarting of compressor 2 is provided; Thermostat 4, it produces the connecting and disconnecting instruction to compressor 2; And electronic package 5, it provides the execution of algorithm, the duration of the speed of service of this algorithm control compressor 2 and startup-stop.
When compressor at continuous startup-stop phase (T-on; when carrying out its conventional operation T-off); this startup-stop phase is triggered by the connecting and disconnecting instruction of thermostat 4 in each path from the T-off stage to the T-on stage; owing to when each startup of compressor 2, will produce high electric current I; the needed electric current I of motor directly obtains from network electric power in predetermined periods T1; with protection electronic package 5, and at this moment in the section T1, compressor 2 is with constant speed Vo operation.When period T1 finished, compressor 2 was by bringing into operation with variable velocity via the feed of electronic package 5, and this variable velocity is different from constant speed Vo, such as higher speed V1, thereby provides needed cooling (Fig. 3).
When compressor 2 operations, electric current I is by thermal protector 3, and the motor of arrival compressor 2.Thermal protector 3 is placed in the electric connection box on compressor 2 housings, and opens or closes according to the change of environment temperature.Thermal protector 3 is opened when temperature is higher than preset value, thereby closes the electric current I of 2 motors from the network electric power to the compressor, and closes when temperature is lower than preset value, thereby allows electric current I to arrive the motor of compressor 2 from network electric power.When the motor of compressor 2 is overheated, thermal protector 3 close current I, thus stop compressor 2 and protection electronic package 5.
At thermal protector 3 close current I; thereby do not receiving from the open command of thermostat 4 and stopping under the situation of compressor 2; electric current I is not fed on the compressor 2 in default blocking period T2; thereby the pressure in the refrigeration system can be balanced, and consideration may be by not going code that thermostat 4 produced in this period.When period T2 finished, compressor 2 was to start from the electric current I of thermostat 4 supply independently.After starting, compressor 2 is with constant period T3 of speed Vo operation, this period, T3 was longer than period T1, in period T1, compressor 2 is with constant speed Vo operation, and by carrying out feed from the electric current I of network electric power, network electric power is used when each starts for the first time, after this, electric current I is supplied by electronic package 5, and it moves with speed V1.When compressor 2 moved with the speed of Vo or V1, if receive open command from thermostat 4, this instruction was performed so, thus the beginning T-off stage.
Being used to of cooling device 1 avoids the repetition of compressor 2 and the control method of unforeseen stall to be made up of the following step:
-compressor 2 brings into operation 100 under the going code of thermostat 4
-compressor 2 moves 101 with constant speed Vo when starting with in period T1
-after the period, T1 finished, electric current I was supplied by electronic package 5, and compressor 2 is with speed V1 operation 102
-thermal protector 3 close current I whether no matter, thermal protector 3 all controlled 103
If-thermal protector 3 is close current I not as yet, enter into so no matter whether thermostat 4 has produced open command, thermostat 4 all controlled steps 106
If-thermal protector 3 is close current I, electric current I be not supplied under the situation of compressor 2 so, suspend a period T2 104
-compressor 2 is with constant period T3 of speed Vo operation, and this period T3 is longer than the period T1105 of electric current I by the network electric power supply
-no matter whether thermostat 4 has produced open command, thermostat 4 all controlled 106
If-thermostat 4 does not produce open command as yet, return the step 102 of compressor 2 so with speed V1 operation
If-thermostat 4 has produced open command, compressor 2 begins blocking period T-off107 so.
In one embodiment of the invention, cooling device 1 comprises thermal protector heat sensor 6, and it detects the temperature of thermal protector 3.Whether the temperature that thermal protector heat sensor 6 detects thermal protector 3 is lower than preset value, and thermal protector 3 is closed at this preset value place, and therefore thermal protector 3 allows flowing of electric current I.When thermal protector 3 stops compressor 2 by close current I; if temperature falls back to regime values when blocking period T2 finishes; thermal protector 3 is closed so; thereby allow electric current I to flow; and electronic package 5 after closing, makes compressor 2 operations along with the data that receive from thermal protector heat sensor 6 at thermal protector 3 at once or after a while.
Along with cooling device 1 utilizes electronic package 5 and the method for control execution, avoided in the experimental starting of the repetition of stall after the unforeseen stall of compressor 2, and the experimental starting after the unforeseen stall can be successful.
In an embodiment of the present invention, do not needing under the situation that the multiple parameter of compressor 2 is measured and assessed, by carrying out simple control method the unforeseen stall of compressor 2 is avoided, and realized effective performance, thereby be under the intensive work load, such as obtaining needed cooling value in a high environment temperature or the cooling device that opens or closes continually 1 to cooling device 1.
Claims (4)
1. a cooling device (1) comprises the compressor (2) of the variable velocity that the kind of refrigeration cycle performance is provided; The thermal protector (3) that the temperature of described compressor (2) is detected; The startup stage and stop phase in be the thermostat (4) that described compressor (2) produces the connecting and disconnecting instruction; it is characterized in that; has electronic package (5); described electronic package (5) is not being considered under the situation about going code that may be produced by described thermostat (4); in default second period (T2), do not supply electric current (I) to described compressor (2); in the time of described thermal protector (3) close current (I); when moving, described compressor (2) do not receiving under the situation from the open command of described thermostat (4); stop described compressor (2); and described electronic package (5) is when described second period (T2) finishes; to start described compressor (2) by the electric current of supplying from described thermostat (4) independently (I); and after starting; make described compressor (2) operation one the 3rd period (T3) with constant speed (Vo), described the 3rd period (T3) is longer than first period (T1) of presetting into each startup.
2. cooling device as claimed in claim 1 (1); it is characterized in that; by the thermal protector heat sensor (6) that the temperature to described thermal protector (3) detects, described electronic package (5) can be after described thermal protector (3) be closed and is started described compressor (2) at once or after a while.
3. the control method that is used for cooling device as claimed in claim 1 or 2 (1) comprises the following steps: described compressor (2) bring into operation (100) under the going code of described thermostat (4); Described compressor (2) moves (101) with constant speed (Vo) when starting with in described first period (T1); After described first period (T1) finished, electric current (I) was supplied by described electronic package (5), and described compressor (2) is with first speed (V1) operation (102); No matter whether described thermal protector (3) has closed described electric current (I), described thermal protector (3) all controlled (103); If described thermal protector (3) is close current (I) not as yet, enter into so no matter whether thermostat (4) has produced described open command, all controlled step of described thermostat (4) (106); If the described close current of described thermal protector (3) (I) be not supplied to electric current (I) under the situation of described compressor (2) so, suspend one second period (T2) (104); Described compressor (2) is with constant speed (Vo) operation one the 3rd period (T3), and described the 3rd period (T3) is longer than first period (T1) (105) of electric current (I) by the network electric power supply; No matter whether thermostat (4) has produced described open command, described thermostat (4) all controlled (106); If described thermostat (4) does not produce described open command as yet, turn back to the step (102) of described compressor (2) so with first speed (V1) operation; If described thermostat (4) has produced described open command, so described compressor (2) beginning pause stage (T-off) (107).
4. control method as claimed in claim 3 is characterized in that, second period (T2) that described thermal protector (3) close current (I) stops afterwards is the same long with the period that requirement is used for the interior pressure of balance cooling system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR200502024 | 2005-05-30 | ||
| TR2005/02024 | 2005-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101184965A CN101184965A (en) | 2008-05-21 |
| CN100538220C true CN100538220C (en) | 2009-09-09 |
Family
ID=36802004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006800188033A Expired - Fee Related CN100538220C (en) | 2005-05-30 | 2006-05-26 | cooling device and control method |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1888983B1 (en) |
| KR (1) | KR100946799B1 (en) |
| CN (1) | CN100538220C (en) |
| AT (1) | ATE456010T1 (en) |
| BR (1) | BRPI0611215A2 (en) |
| DE (1) | DE602006011887D1 (en) |
| ES (1) | ES2339049T3 (en) |
| SI (1) | SI1888983T1 (en) |
| WO (1) | WO2006129255A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013050055A1 (en) * | 2011-10-03 | 2013-04-11 | Electrolux Home Products Corporation N.V. | Refrigerator and method of operating refrigeration system |
| WO2014023694A2 (en) * | 2012-08-06 | 2014-02-13 | Kriwan Industrie-Elektronik Gmbh | Method for controlling a compressor of a refrigeration system, and refrigeration system |
| US10145589B2 (en) * | 2013-03-15 | 2018-12-04 | Whirlpool Corporation | Net heat load compensation control method and appliance for temperature stability |
| JP2020101294A (en) * | 2017-04-12 | 2020-07-02 | パナソニックＩｐマネジメント株式会社 | Refrigerated showcase |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1301875B1 (en) * | 1998-07-29 | 2000-07-07 | Whirlpool Co | SELF-ADAPTIVE CONTROL FOR THE REGULATION OF REFRIGERATORS AND FREEZERS |
| TR200300994T1 (en) * | 2001-02-26 | 2004-01-21 | Arçeli̇k A.Ş. | Cooling efficiency increase method. |
| US6532433B2 (en) * | 2001-04-17 | 2003-03-11 | General Electric Company | Method and apparatus for continuous prediction, monitoring and control of compressor health via detection of precursors to rotating stall and surge |
| JP4155084B2 (en) * | 2002-06-12 | 2008-09-24 | 株式会社デンソー | Electric compressor |
| AU2003265215A1 (en) * | 2002-09-02 | 2004-03-19 | Arcelik, A.S | Refrigerator control method |
-
2006
- 2006-05-26 EP EP06745031A patent/EP1888983B1/en not_active Not-in-force
- 2006-05-26 ES ES06745031T patent/ES2339049T3/en active Active
- 2006-05-26 AT AT06745031T patent/ATE456010T1/en not_active IP Right Cessation
- 2006-05-26 SI SI200630589T patent/SI1888983T1/en unknown
- 2006-05-26 CN CNB2006800188033A patent/CN100538220C/en not_active Expired - Fee Related
- 2006-05-26 KR KR1020077028863A patent/KR100946799B1/en not_active IP Right Cessation
- 2006-05-26 DE DE602006011887T patent/DE602006011887D1/en active Active
- 2006-05-26 BR BRPI0611215-3A patent/BRPI0611215A2/en active Search and Examination
- 2006-05-26 WO PCT/IB2006/051683 patent/WO2006129255A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1888983A1 (en) | 2008-02-20 |
| ES2339049T3 (en) | 2010-05-14 |
| EP1888983B1 (en) | 2010-01-20 |
| BRPI0611215A2 (en) | 2010-08-24 |
| DE602006011887D1 (en) | 2010-03-11 |
| KR100946799B1 (en) | 2010-03-11 |
| SI1888983T1 (en) | 2010-04-30 |
| WO2006129255A1 (en) | 2006-12-07 |
| CN101184965A (en) | 2008-05-21 |
| KR20080022547A (en) | 2008-03-11 |
| ATE456010T1 (en) | 2010-02-15 |
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