CN103105023B - Control for the fan speed of air-cooled condenser when accurately freezing - Google Patents
Control for the fan speed of air-cooled condenser when accurately freezing Download PDFInfo
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- CN103105023B CN103105023B CN201110359448.9A CN201110359448A CN103105023B CN 103105023 B CN103105023 B CN 103105023B CN 201110359448 A CN201110359448 A CN 201110359448A CN 103105023 B CN103105023 B CN 103105023B
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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
- 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
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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
- F25B49/027—Condenser 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
- 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
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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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
- 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
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The disclosure relates to for the fan speed control of air-cooled condenser when accurately freezing.Condenser fan, environment temperature sensor, refrigerant pressure sensor and controller is comprised according to air conditioner system of the present disclosure.Environment temperature sensor is used for the environment temperature residing for sensing system.Refrigerant pressure sensor is used for the pressure of the cold-producing medium of sensing system.Target refrigerant pressure module is used for the optimum pressure of the cold-producing medium in recognition system.Controller is for generating the output of the speed representing condenser fan, and described condenser fan can be used to, along with the variation of ambient temperature of system, the pressure of cold-producing medium maintained about optimum pressure.
Description
Technical field
The fan speed that the disclosure relates to for air-cooled condenser controls.
Background technology
This part provides the background information relevant with the disclosure, but not necessarily prior art.
The cooling system of the such as type using steam compression cycle and so on can comprise compressor, condenser, expansion gear and evaporimeter.Compressor can be used to and the working fluid or cold-producing medium that are supplied to condenser are compressed to blowdown presssure from suction pressure.Within the condenser, heat is removed by from cold-producing medium, and cold-producing medium place at an elevated pressure simultaneously.Cold-producing medium flows through expansion gear from condenser, and wherein pressure is reduced.Cold-producing medium flows through evaporimeter therefrom, and wherein heat is added and the increase of the temperature of cold-producing medium.Cold-producing medium flow to compressor from evaporimeter, and this process starts again.
Condenser can be air-cooled condenser, and wherein, fan can be used to supply the air-flow on condenser, to be conducive to heat extraction from the cold-producing medium flow through wherein.In the cooling system of these types, current control method relates to the value being maintained by condensing pressure (pressure of the cold-producing medium in condenser place/condenser) and fix and raise, to allow the appropriate function of expansion valve.Fixing condensing pressure is minimum condensing pressure.Such as, as nonrestrictive example, when R407C is used as cold-producing medium, condensing pressure can maintain approximate 220PSIG or more.By adjusting the operation of condenser, condensing pressure can maintain fixing lift-off value or more.Such as, use variable-frequency drive or fan speed to control, the speed of supply by the fan of the air-flow of condenser can be adjusted, to maintain the condensing pressure of fixing rising.By adjustment inlet valve, Head pressure control valve or other device in order to reduce air-cooled condenser effectiveness, condensing pressure also can maintain fixing lift-off value or more.
But, especially during colder environmental aspect, by condenser fan being maintained the speed higher than necessity, so just maintained by condensing pressure than meeting the low value of the necessary value of cooling load, the pattern of these operations may waste compressor energy (lowering efficiency).In addition, when the fan speed for air-cooled condenser increases to maintain minimum condensing pressure, the noise that fan generates may be excessively.Excessive noise may need to use extra sound insulation or quieter material, so that noise is maintained acceptable level.
Therefore, a kind of cooling system and the method for operating that use air-cooled condenser are advantageously provided, it can reduce the waste (increase efficiency) of compressor energy and/or reduce the noise that generates of cooling system, reduces cold-producing medium and injects, and reduce system weight.If the method allows the flexible approach that can balance between the needs to efficiency and the hope to quiet operation, then can be favourable further.Also will be advantageous that, the temperature of cold-producing medium is firmly maintained to different environment temperatures.
Summary of the invention
This part provides General Introduction of the present disclosure, instead of its four corner or its whole feature is comprehensively open.
This instruction provides a kind of air conditioner system, and this air conditioner system comprises condenser fan, environment temperature sensor, refrigerant pressure sensor and controller.Environment temperature sensor is used for the environment temperature residing for sensing system.Refrigerant pressure sensor is used for the pressure of the cold-producing medium of sensing system.Target refrigerant pressure module is used for the optimum pressure of the cold-producing medium in recognition system.Controller is for generating the output of the speed representing condenser fan, and described condenser fan can be used to, along with the variation of ambient temperature of system, the pressure of cold-producing medium maintained about optimum pressure.
This instruction additionally provides a kind of air conditioner system, and this air conditioner system comprises compressor, condenser fan, environment temperature sensor, refrigerant temperature sensors, target refrigerant temperature module and controller.Environment temperature sensor is used for the environment temperature residing for sensing system.Refrigerant temperature sensors is used for the temperature of the cold-producing medium of sensing system.Target refrigerant temperature module is used for the Optimal Temperature of the cold-producing medium in recognition system.Controller is for generating the output of the speed representing condenser fan, and described condenser fan can be used to and the temperature of cold-producing medium is maintained about Optimal Temperature.
This instruction further provides a kind of for using controller to control the method for the condenser fan of air conditioner system.The method comprises determines that the compressor of air conditioner system connects or disconnects.The method comprises further: when compressor is connected, in predetermined time section, with the First Speed of the environment temperature corresponding to sensing, the condenser fan of air conditioner system is operated.The method also comprises: after the predetermined period of time expires, with second speed, condenser fan is operated, and described second speed is determined based on the environment temperature of sensing and the error between the refrigerant pressure and target refrigerant pressure of sensing by controller.Second speed is enough to the refrigerant pressure of sensing to move to target refrigerant pressure.
Preferably, with third speed, described condenser fan is operated, described third speed is determined based on the described environment temperature of sensing and the error between the refrigerant temperature and target refrigerant temperature of sensing by described controller, and described third speed is enough to the described refrigerant temperature of sensing to move to described target refrigerant temperature.
Preferably, only have when the described refrigerant temperature sensed is more than or equal to 35 DEG C, just with described third speed, described condenser fan is operated.
This instruction additionally provides a kind of for using controller to control the method for the condenser fan of air conditioner system.The method comprises: when the refrigerant temperature sensed is less than the first pre-customized refrigerant temperature, condenser fan is stopped.The method also comprises: when the refrigerant temperature sensed is more than or equal to the first pre-customized refrigerant temperature and is less than the second pre-customized refrigerant temperature, with the First Speed of the scheduled environment temperature being used for corresponding to sensing, condenser fan is operated.The method comprises further: when the refrigerant temperature sensed is more than or equal to the second pre-customized refrigerant temperature and is less than the 3rd pre-customized refrigerant temperature, the environment temperature being used for corresponding to sensing with scheduled and condenser fan is operated based on the second speed of error between the refrigerant temperature of sensing and target refrigerant temperature, described second speed is enough to the refrigerant temperature of sensing to move to target refrigerant temperature.The method further comprises: when the refrigerant temperature sensed is more than or equal to the three pre-customized refrigerant temperature larger than the second pre-customized refrigerant temperature, to make condenser fan operate based on the third speed of the error between the refrigerant temperature sensed and target refrigerant temperature, described third speed is enough to the refrigerant temperature of sensing to move to target refrigerant temperature.
Preferably, with the 4th speed, described condenser fan is operated, described 4th speed is determined based on the described environment temperature of sensing and the error between the refrigerant pressure and target refrigerant pressure of sensing by described controller, and described 4th speed is enough to the described refrigerant pressure of sensing to move to described target refrigerant pressure.
From the description provided at this, further applicability aspect will become obvious.Description in this general introduction and specific examples object just in order to illustrate, instead of are intended to limit the scope of the present disclosure.
Accompanying drawing explanation
Accompanying drawing object described here just in order to illustrate the embodiment selected instead of all possible embodiment, and is not intended to limit the scope of the present disclosure.
Fig. 1 be a diagram that the block diagram of the cooling system according to this instruction;
Fig. 2 be a diagram that the functional block diagram of the control system of the cooling system of Fig. 1;
Fig. 3 is the flow chart of the control method of condenser fan for cooling system;
Fig. 4 be a diagram that the functional block diagram of another control system of the cooling system of Fig. 1;
Fig. 5 is the flow chart of another control method of condenser fan for cooling system; And
Fig. 6 there is provided the flow chart of the additional detail of the control method about Fig. 5.
Run through the several views in accompanying drawing, corresponding label indicates corresponding part.
Detailed description of the invention
With reference now to accompanying drawing, more fully example embodiment is described.
Provide example embodiment, so that the disclosure will thoroughly and fully scope will be conveyed to those skilled in the art.Set forth numerous specific detail, such as the example of particular elements, apparatus and method, to provide the thorough understanding to embodiment of the present disclosure.Will be apparent that to those skilled in the art, not need to use specific details, exemplifying embodiment embodiment can be carried out in many different forms, and should not be interpreted as limiting the scope of the present disclosure.In some example embodiments, well-known process, well-known apparatus structure and well-known technology is not described in detail.
The general survey of the cooling system according to this instruction is generally illustrated in FIG with label 10.Cooling system 10 comprises air-cooled condenser 12, expansion gear 14, evaporimeter 16 and compressor 18.Compressor 18 can be used to and cold-producing medium or working fluid are compressed to blowdown presssure from suction pressure.Cold-producing medium from compressor 18 out, and flows through condenser 12, expansion gear 14 and evaporimeter 16, then turns back to compressor 18.Within condenser 12, make hot Q by the air-flow flowing through condenser 12
1remove from cold-producing medium.Air-flow is provided by the fan 20 of being powered by motor 22.Along with cold-producing medium is through expansion gear 14, the pressure drop of cold-producing medium.Within evaporimeter 16, hot Q
2be passed to the cold-producing medium flow through wherein.
Cooling system 10 comprises various sensor for surveillance 10 or other device further.Such as, pressure sensor 24 senses the condensing pressure of the cold-producing medium in cooling system 10.Environment temperature sensor 26 senses the environment temperature of the air-flow supplied to condenser 12 by fan 20.Refrigerant temperature sensors 28 senses the temperature of cold-producing medium.
Cooling system 10 is usually controlled by controller 30.Controller 30 is configured to such as receive various input from compressor 18, pressure sensor 24, environment temperature sensor 26, refrigerant temperature sensors 28 and motor 22, described motor 22 represents the speed of motor 22 and fan 20, as described further on this.Controller 30 can also receive user and input 32, and this user inputs the operator scheme for cooling system 10 that 32 instructions are wished.Controller 30 is configured to generate such as towards the various outputs of the motor 22 of condenser fan 20 further.As described further on this like that, controller 30 comprises various module.As used herein, term " module " refer to perform one or more software or firmware program special IC (ASIC), electronic circuit, processor (shared, special or combine) and memory, the logic circuit of combination or other suitable parts of function of providing a description.
Reference diagram 2 in addition, generally illustrates the Exemplary control system of cooling system 10 with label 50.In the control system 50 of Fig. 2, controller 30 is illustrated as has the first controller configuration 30A (being referred to herein as controller 30A).Controller 30A comprises proportional-integral derivative controller (PID) module 52, first functional module 54 and the second functional module 56.Switch 58 selects the output of self-controller 30A, as described further on this.
Controller 30A can be the function that can be used to performance description individual module, as shown can performance description function multiple integration modules, can the integration module of function of performance description and the combination of separate modular and/or can one or more separate modular of function of performance description.Therefore, the controller 30A as illustrated and describing is just exemplary in essence, and does not intend to limit the scope of the present disclosure.Such as, although controller 30A is described to comprise PID module 52, any suitable control module can be comprised.
Controller 30A generates based on multiple difference input the condenser fan speed exported to motor 22.Such as, compressor 18 provides the input of the ON/OFF state representing compressor to controller 30A.Refrigerant pressure sensor 24 provides the input of the refrigerant pressure representing observation.Environment temperature sensor 26 provides the input of the environment temperature representing observation.The goal pressure (or set point) of cold-producing medium is inputted from module 34 to controller 30A.Goal pressure is based on for the optimization calculating of whole cooling system 10 and the predetermined optimum pressure of efficiency.As described in this like that, by controlling the speed of motor 22 and condenser fan 20, even if when the variation of ambient temperature that environment temperature sensor 26 detects, cold-producing medium is also maintained goal pressure by controller 30A.
Reference diagram 3 in addition, describes the operation of control system 50 now.In system 50 after beginning frame 102 place initializes, based on the compressor ON/OFF state received by the controller 30A input from compressor 18, system 50 determines that compressor 18 connects or disconnects at frame 104 place.If compressor is not connected, so controller proceeds to frame 106, and condenser fan 20 is stopped operating with suitable speed after 30 seconds.Controller 30A is then at frame 108 place end operation.In various embodiments, control to turn back to frame 104 to monitor the ON/OFF state of compressor 18.
If compressor is connected, so controller 30A proceeds to frame 110, and first arranges switch 58, and the output of controller 30A is generated by the second functional module 56.Based on the environment temperature sensed by environment temperature sensor 26, the second functional module 56 generates the initial velocity being used for motor 22, and the resultant initial velocity for fan 20.The initial velocity generated at frame 110 place provides quick initial communication to controller 30A, the speed of condenser fan 20 can arrange enough high by this quick initial communication, to prevent the refrigerant pressure sensed from exceeding target refrigerant pressure, thus prevent pressure from " overregulating ".
After the predetermined time period, controller 30A moves to frame 112 and arranges switch 58, and the output of controller 30A is generated by PID module 52.PID module 52 generates output based on two inputs.First input is generated based on the environment temperature observed by environment temperature sensor 26 by the first functional module 54, and the gain comprised for PID module 52 and parameter.Second input is the error between the refrigerant pressure that sensed by refrigerant pressure sensor 24 and the target refrigerant pressure set point generated in module 34.The output of PID module 52 represents the speed for motor 22, and thus represent and be used for the speed of condenser fan 20, it is enough to the target refrigerant pressure taking the refrigerant pressure sensed by refrigerant pressure sensor 24 to or almost take to module 34.In order to provide level and smooth transmission when switching between the second functional module 56 and PID module 52 as controller 30A and export, between PID module 52 and the selection output of controller 30A, provide ripple disable transmission, as shown in Figure 2.
As long as at frame 104 place, controller 30A detects that compressor 18 is connected, PID module 52 will generate output, this output is updated and maintains or the approximate target refrigerant pressure maintaining module 34 and generate with refrigerant pressure refrigerant pressure sensor 24 sensed, and consideration is included in the change of the environment temperature simultaneously also sensed by environment temperature sensor 26 in.Such as input 32 in response to user, controller 30A can at frame 114 place end operation.
Reference diagram 4 in addition, generally illustrates another Exemplary control system of cooling system 10 with label 150.In the control system 150 of Fig. 4, controller 30 is illustrated as has second controller configuration 30B (being referred to herein as controller 30B).The same with controller 30A, controller 30B comprises PID module 52, first functional module 54 and the second functional module 56.Control system 150 comprises the 3rd functional module 60, first switch 62, second switch 64 and zero fan speed detector 66 further.Controller 30B can replace or add to controller 30A, such as, as subsequent use, with based on as refrigerant temperature sensors 28 the refrigerant temperature that senses control the speed of condenser fan 20.
The same with controller 30A, controller 30B can be the function that can be used to performance description individual module, as shown can performance description function multiple integration modules, can the integration module of function of performance description and the combination of separate modular and/or can one or more separate modular of function of performance description.Therefore, the controller 30B as illustrated and describing is just exemplary in essence, and does not intend to limit the scope of the present disclosure.Such as, although controller 30B is described to comprise PID module 52, any suitable control module can be comprised.
Controller 30B generates based on multiple difference input the condenser fan speed exported to motor 22.Such as, compressor 18 provides the input of the ON/OFF state representing compressor to controller 30B at the first switch 62 place.Environment temperature sensor 26 provides the input of the environment temperature representing sensing to the first functional module 54 and the second functional module 56.Refrigerant temperature sensors 28 provides the input of the refrigerant temperature representing sensing to the 3rd functional module 60.The target refrigerant temperature (or set point) of cold-producing medium is inputted from module 36 to controller 30B.Error between the refrigerant temperature of sensing and target refrigerant temperature is imported into PID module 52.Target refrigerant temperature (or set point) is based on for the optimization calculating of whole cooling system 10 and the predetermined temperature of efficiency.As described in this like that, by controlling the speed of motor 22 and condenser fan 20, even if when environment temperature and other environmental aspect various change, cold-producing medium is also maintained target temperature by controller 30B.
Reference diagram 5 in addition, describes the operation of control system 150 now.In system 150 after beginning frame 202 place initializes, controller 30B determines whether compressor 18 is connected.If compressor 18 is not connected, so controller 30B proceeds to frame 206, and after the scheduled time that operates at a predetermined velocity is such as about 30 seconds, condenser fan 20 is stopped.Predetermined speed can be any suitable speed, is such as enough to the speed providing standard operation.If controller 30B determines that compressor is connected, so controller 30B proceeds to frame 208.Otherwise controller 30B at frame 224 place's end operation or can turn back to frame 204.In various embodiments, control to return to monitor that compressor 18 connects or disconnects.
At frame 208 place, controller 30B reads input from refrigerant temperature sensors 28 and accesses the 3rd functional module 60, to determine whether refrigerant temperature is more than or equal to such as 15 DEG C or other suitable preset temperature.If refrigerant temperature is not more than or equal to 15 DEG C, so controller 30B proceeds to frame 210 and generates and exports to stop motor 22 and condenser fan 20.If refrigerant temperature is more than or equal to 15 DEG C, so controller 30B proceeds to frame 212.Otherwise controller 30B at frame 224 place's end operation or can turn back to frame 204.In various embodiments, control to return to monitor that compressor 18 connects or disconnects.
At frame 212 place, controller 30B reads input from refrigerant temperature sensors 28 and accesses the 3rd functional module 60, to determine whether refrigerant temperature is more than or equal to such as 25 DEG C or other suitable preset temperature.If refrigerant temperature is not more than or equal to 25 DEG C, so controller 30B proceeds to frame 214.At frame 214, controller 30B accesses the second functional module 56, and this second functional module 56 comprises the environment temperature table of the preset speed for condenser fan 20 had based on environment temperature.Controller 30B uses the second functional module 56 to generate towards the output of motor 22, to make condenser fan 20 operate with the preset speed of the environment temperature table defined of the environment temperature sensed based on environment temperature sensor 26.If refrigerant temperature is more than or equal to 25 DEG C, so controller 30B proceeds to frame 216.Otherwise controller 30B at frame 224 place's end operation or can turn back to frame 204.In various embodiments, control to return to monitor that compressor 18 connects or disconnects.
At frame 216 place, controller 30B reads input from refrigerant temperature sensors 28 and accesses the 3rd functional module 60, to determine whether refrigerant temperature is more than or equal to such as 35 DEG C or other suitable preset temperature.If refrigerant temperature is not more than or equal to 35 DEG C, so controller 30B proceeds to frame 218.At frame 218, generate the fan speed exported to motor 22, this fan speed inserts based on the fan speed of the control undertaken by PID module 52 and the fan speed that specified by the environment temperature table of the second functional module 56.If refrigerant temperature is more than or equal to 35 DEG C, so controller 30B proceeds to frame 220.Otherwise controller 30B at frame 224 place's end operation or can turn back to frame 204.In various embodiments, control to return to monitor that compressor 18 connects or disconnects.
At frame 220 place, controller 30B uses PID module 52 to generate the fan speed exported to motor 22.Reference diagram 6 describes in detail and uses PID module 52 to control the frame 220 of the speed of condenser fan 20 in addition.
Within frame 220, controller 30B proceeds to frame 230 and accesses the first functional module 54, to load PID gain constant in the environment temperature table from the second functional module 56, and performs gain scheduling for PID module 52.At frame 232, based on the output of zero fan speed detector 66, controller 30B determines whether the speed of condenser fan 20 is zero.If speed is zero, so controller proceeds to frame 234.At frame 234 place, controller 30B determines the initial velocity of fan 20 based on the gain scheduling performed at frame 230 place.If controller 30B determines that fan speed is non-vanishing at frame 232 place, so controller 30B walks around frame 234.
At frame 236 place, controller 30B records the present speed being used for the fan 20 that ripple disable is transmitted.At frame 238 place, controller 30B had both read the refrigerant temperature of sensing based on the input received from refrigerant temperature sensors 28, read target refrigerant temperature (set point) again from module 36.Difference between the refrigerant temperature of sensing and target refrigerant temperature or error are imported into PID module 52.Based on this error, PID module 52 calculates at frame 240 place and exports.This exports the speed of motor 22 and resultant fan 20 of illustrating, and this speed is enough to the refrigerant temperature that sensor 28 senses to take to the target refrigerant temperature that module 36 provides.After frame 240 place generates output, controller 30B at frame 224 place (Fig. 5) end operation or can turn back to frame 204.In various embodiments, control to return to monitor that compressor 18 connects or disconnects.
So, the environment temperature that tube sensor 26 does not sense is how many, and refrigerant temperature is always maintained target refrigerant temperature by control system 150.This Hybrid mode can utilize the temperature sensor of low cost, as changed the thermistor of resistance along with temperature, replace the pressure sensor at condensator outlet place to control condenser fan speed, and can use independently or when pressure sensor 25 fault as subsequent use.
In order to the object illustrated and describe has provided the aforementioned description to embodiment.Do not intend exhaustive or limit the disclosure.Individual component in specific embodiment or feature are usually not limited to this specific embodiment, but interchangeable under applicable circumstances, and can be used in the embodiment of selection, even without illustrating especially or describing.Same situation also can change by many modes.Such change is not considered to deviate from the disclosure, but all amendments so all will comprise within the scope of the present disclosure.
Claims (14)
1. an air conditioner system, comprising:
Condenser fan;
Environment temperature sensor, for sensing the environment temperature residing for described system;
Refrigerant pressure sensor, for sensing the pressure of the cold-producing medium of described system;
Target refrigerant pressure module, for identifying the optimum pressure of the described cold-producing medium in described system; And
Controller, for generating the output of the speed representing described condenser fan, described condenser fan can be used to along with the variation of ambient temperature of described system and the pressure of described cold-producing medium is maintained about optimum pressure,
Wherein, described output comprises: first exports, and it is generated by the functional module of described controller; And second exports, it is by the PID CMOS macro cell of described controller, when predetermined time, section was expired, generates described second and export after described first exports.
2. air conditioner system according to claim 1, wherein, when the compressor of described system is not activated, described controller generates the output that described condenser fan is stopped.
3. an air conditioner system, comprising:
Compressor;
Condenser fan;
Environment temperature sensor, for sensing the environment temperature residing for described system, arranges the initial velocity of described condenser fan according to described environment temperature;
Refrigerant temperature sensors, for sensing the temperature of the cold-producing medium of described system;
Target refrigerant temperature PID module, for identifying the Optimal Temperature of the described cold-producing medium in described system; And
Controller, for generating the output of the speed representing described condenser fan, described condenser fan can be used to and the temperature of described cold-producing medium is maintained about Optimal Temperature.
4. air conditioner system according to claim 3, wherein, when receiving the input that the described compressor of expression is not connected, described controller generates the output that described condenser fan was stopped within about 30 seconds.
5. air conditioner system according to claim 3, wherein, after described controller receives the input representing that described compressor is connected, if the temperature of described cold-producing medium is not more than or equal to 15 DEG C, then described controller generates the output that described condenser fan is stopped.
6. air conditioner system according to claim 3, wherein, after described controller receives the input representing that described compressor is connected, if but the temperature of described cold-producing medium is more than or equal to 15 DEG C is not more than or equal to 25 DEG C, then described controller generates the preset speed according to the environment temperature based on sensing and makes the output that described condenser fan operates.
7. air conditioner system according to claim 3, wherein, after described controller receives the input representing that described compressor is connected, if but the temperature of described cold-producing medium is more than or equal to 25 DEG C is not more than or equal to 35 DEG C, then described controller generates and makes according to based on the preset speed of environment temperature of sensing and the output of the described PID module of described controller the output that described condenser fan operates.
8., for using controller to control a method for the condenser fan of air conditioner system, comprising:
Determine that the compressor of described air conditioner system connects or disconnects;
If determine that described compressor connects:
With the First Speed of the environment temperature corresponding to sensing, the condenser fan of described air conditioner system is operated in predetermined amount of time upon actuation; And
After described predetermined amount of time expires, with second speed, described condenser fan is operated, described second speed is determined based on the described environment temperature of sensing and the error between the refrigerant pressure and target refrigerant pressure of sensing by described controller, described second speed is enough to the described refrigerant pressure of sensing to move to described target refrigerant pressure
Wherein, described controller comprises PID module, and the environment temperature of described sensing is described PID module determination pid parameter, and described parameter determines described second speed.
9. method according to claim 8, comprises further:
Use the PID module of described controller to determine described second speed.
10. method according to claim 8, comprises further:
With third speed, described condenser fan is operated, described third speed is determined based on the described environment temperature of sensing and the error between the refrigerant temperature and target refrigerant temperature of sensing by described controller, and described third speed is enough to the described refrigerant temperature of sensing to move to described target refrigerant temperature.
11. methods according to claim 10, comprise further:
Only have when the described refrigerant temperature sensed is more than or equal to 35 DEG C, just with described third speed, described condenser fan is operated.
12. 1 kinds, for using controller to control the method for the condenser fan of air conditioner system, comprising:
When the refrigerant temperature sensed is less than the first pre-customized refrigerant temperature, described condenser fan is stopped;
When the refrigerant temperature sensed is more than or equal to described first pre-customized refrigerant temperature and is less than the second pre-customized refrigerant temperature, with the First Speed of the scheduled environment temperature being used for corresponding to sensing, described condenser fan is operated;
When the refrigerant temperature sensed is more than or equal to described second pre-customized refrigerant temperature and is less than the 3rd pre-customized refrigerant temperature, the environment temperature being used for corresponding to sensing with scheduled and described condenser fan is operated based on the second speed of error between the refrigerant temperature of sensing and target refrigerant temperature, described second speed is enough to the refrigerant temperature of sensing to move to described target refrigerant temperature; And
When the refrigerant temperature sensed is more than or equal to the three pre-customized refrigerant temperature larger than described second pre-customized refrigerant temperature, to make described condenser fan operate based on the third speed of the error between the refrigerant temperature sensed and target refrigerant temperature, described third speed is enough to the refrigerant temperature of sensing to move to described target refrigerant temperature.
13. methods according to claim 12, comprise further:
Described first pre-customized refrigerant temperature is set to 15 DEG C;
Described second pre-customized refrigerant temperature is set to 25 DEG C; And
Described 3rd pre-customized refrigerant temperature is set to 35 DEG C.
14. methods according to claim 12, comprise further:
With the 4th speed, described condenser fan is operated, described 4th speed is determined based on the described environment temperature of sensing and the error between the refrigerant pressure and target refrigerant pressure of sensing by described controller, and described 4th speed is enough to the described refrigerant pressure of sensing to move to described target refrigerant pressure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110359448.9A CN103105023B (en) | 2011-11-14 | 2011-11-14 | Control for the fan speed of air-cooled condenser when accurately freezing |
| US13/490,820 US20130139529A1 (en) | 2011-11-14 | 2012-06-07 | Fan Speed Control For Air-Cooled Condenser In Precision Cooling |
| EP12192667.9A EP2597389A3 (en) | 2011-11-14 | 2012-11-14 | Fan speed control for air-cooled condenser in precision cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110359448.9A CN103105023B (en) | 2011-11-14 | 2011-11-14 | Control for the fan speed of air-cooled condenser when accurately freezing |
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| Publication Number | Publication Date |
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| CN103105023A CN103105023A (en) | 2013-05-15 |
| CN103105023B true CN103105023B (en) | 2016-03-16 |
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| CN201110359448.9A Active CN103105023B (en) | 2011-11-14 | 2011-11-14 | Control for the fan speed of air-cooled condenser when accurately freezing |
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| Country | Link |
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| US (1) | US20130139529A1 (en) |
| CN (1) | CN103105023B (en) |
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| US9297567B2 (en) | 2009-01-30 | 2016-03-29 | National Refrigeration & Air Conditioning Canada Corp. | Condenser assembly with a fan controller and a method of operating same |
| US8011191B2 (en) | 2009-09-30 | 2011-09-06 | Thermo Fisher Scientific (Asheville) Llc | Refrigeration system having a variable speed compressor |
| CA2842658C (en) | 2013-02-12 | 2020-08-25 | National Refrigeration & Air Conditioning Canada Corp. | Condenser unit |
| JP5707621B2 (en) | 2013-07-04 | 2015-04-30 | Smc株式会社 | Constant temperature liquid circulation device and operation method thereof |
| KR101677649B1 (en) * | 2014-12-23 | 2016-11-18 | 엘지전자 주식회사 | Refrigerator |
| CN105987550B (en) * | 2015-02-27 | 2021-04-09 | 开利公司 | Refrigeration system condenser fan control |
| US10108236B2 (en) * | 2015-05-21 | 2018-10-23 | Dell Products, Lp | System and method for adjusting cooling fan control settings based on identification of a module |
| CN106671728A (en) * | 2015-11-06 | 2017-05-17 | 福特环球技术公司 | Air conditioning system and control method thereof |
| CN105258304B (en) * | 2015-11-23 | 2018-03-27 | 广东美的制冷设备有限公司 | Cryogenic refrigeration control method, low-temperature refrigeration control device and air conditioner |
| CN108603709B (en) * | 2016-02-03 | 2020-07-07 | 丹佛斯有限公司 | Method for controlling a fan of a vapour compression system according to a variable temperature set point |
| CN105805924A (en) * | 2016-05-11 | 2016-07-27 | 江苏海事职业技术学院 | Air conditioner with good condensing effect |
| WO2018084828A1 (en) * | 2016-11-01 | 2018-05-11 | Ecoer Inc. | A dc varaiable speed compressor control method and control system |
| US10653042B2 (en) * | 2016-11-11 | 2020-05-12 | Stulz Air Technology Systems, Inc. | Dual mass cooling precision system |
| US10712033B2 (en) | 2018-02-27 | 2020-07-14 | Johnson Controls Technology Company | Control of HVAC unit based on sensor status |
| CN108444204B (en) * | 2018-04-08 | 2021-06-11 | 长虹美菱股份有限公司 | Condensation heat exchange control method for embedded refrigerator |
| US11364769B2 (en) | 2019-12-17 | 2022-06-21 | Ford Global Technologies, Llc | Vehicle cabin thermal management system and control methods |
| CN111878440B (en) * | 2020-08-31 | 2022-04-19 | 一汽解放汽车有限公司 | Vehicle and rotation speed control method, device and system of electric control silicone oil fan of vehicle |
| CN112361682A (en) * | 2020-10-15 | 2021-02-12 | 珠海格力电器股份有限公司 | Water chilling unit control method and device and water chilling unit |
| CN117950311A (en) * | 2024-03-27 | 2024-04-30 | 济南大学 | Self-adaptive aircraft brake cooling fan PID control method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103105023A (en) | 2013-05-15 |
| US20130139529A1 (en) | 2013-06-06 |
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