CN108679891A - The control system and its control method of household refrigerators - Google Patents
The control system and its control method of household refrigerators Download PDFInfo
- Publication number
- CN108679891A CN108679891A CN201810818266.5A CN201810818266A CN108679891A CN 108679891 A CN108679891 A CN 108679891A CN 201810818266 A CN201810818266 A CN 201810818266A CN 108679891 A CN108679891 A CN 108679891A
- Authority
- CN
- China
- Prior art keywords
- circuit
- temperature
- compressor
- controller
- total loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
Abstract
This application involves a kind of control system of household refrigerators and its control methods,The control system is by controller,Power circuit,Temperature sampling circuit,Current sampling circuit,Voltage sampling circuit,Parameter setting circuit,Temperature and alarm indication circuit,Total loop switchs,Auxiliary winding circuit switching forms,Controller and power circuit,Temperature sampling circuit,Current sampling circuit,Voltage sampling circuit,Parameter setting circuit,Temperature and alarm indication circuit,Total loop switchs,Auxiliary winding circuit switching is all connected with,Power circuit,Voltage sampling circuit with total loop both ends of power and connect,Current sampling circuit,Total loop switchs,Compressor C-terminal is sequentially connected,The ends compressor S are connected to total loop power supply N-terminal by auxiliary winding circuit switching,Controller is respectively to temperature sampling circuit,Current sampling circuit,Voltage sampling circuit carries out real-time sampling,Control total loop switch and auxiliary winding circuit switching execute corresponding action when reaching Control Criterion of Design.The application is simple for structure, multiple functional, easy to use, at low cost, and effect is good.
Description
Technical field
This application involves a kind of control system of household refrigerators and its control method, it is mainly used for realizing household refrigerators
Cryogenic temperature control and abnormal operating state protection and its internal refrigeration storage compressor booting starting control.
Background technology
Invariable frequency compressor formula household refrigerators refrigeration compartment temperature control, compressor booting start and overload protection it is final
Control object is refrigeration compressor, the motor inside compressor generally use split-phase type monopole asynchronous motor, altogether there are two around
Group, one is main winding, another is auxiliary winding.Wherein temperature control and overload protection are to be to control motor total loop break-make
Purpose, and it is switched on that start be for the purpose of the break-make for controlling motor auxiliary winding, household refrigerators currently on the market generally will be with
Upper three control is completed using separate controller, as shown in Figure 1.
The temperature control of cool room is divided into mechanical temperature controller and electronic temperature controller, the wherein control of mechanical temperature controller
Principle is that the temperature sensing agent pressure in temperature-sensing pipe changes with the variation of temperature, drives transmission bracket action, controls holder
The folding of upper contact；Electronic temperature controller is to acquire refrigeration compartment temperature by temperature sensor, and control circuit is by collected temperature
Degree real time data is converted into electric data feeding microcontroller and is compared with set reference data, according to comparison result the output phase
Induction signal controls the folding of relay or electronic switch.Either mechanical temperature controller or electronic temperature controller, final mesh
Be to reach required temperature by controlling the start-stop of refrigeration compressor.Overload protection is mainly running refrigeration compressor
When overtemperature, overcurrent protected, thermal protector is tightly attached on refrigeration compressor shell or machine winding by when use, works as system
When cold compressor passes through high current, thermal protector internal heating element moment generates larger heat and bimetal leaf bending is caused to be turned over
Turn, and moving contact is made to disconnect, plays the role of overcurrent protection；In addition, work as refrigeration compressor long time running for some reason,
Cause compressor case or motor winding temperature excessively high, promotes after generating heat superposition along with thermal protector internal heating element
Bimetal leaf heated bending is overturn, and moving contact is made to disconnect, and plays overtemperature protective effect.It is bent because of overcurrent and overtemperature
The bimetal leaf of overturning, after reset temperature of the residing environment temperature less than bimetal leaf setting, bimetal leaf can answer automatically
Position, makes thermal protector rearming.The effect of starting control be when refrigeration compressor is switched on connect auxiliary winding into
Row starts, and auxiliary winding is turned off after the completion of waiting starting, at present generally using with posive temperature coefficient thermistor（PTC）It realizes
Dynamic, according to the characteristic of PTC, resistance is smaller when room temperature, and auxiliary winding has larger current and starts when booting, while the electric current also makes
PTC generates heat and resistance value rises rapidly, and auxiliary winding electric current is gradually reduced until basic shutdown.
With the continuous development of electron controls technology, various electronic controllers will gradually substitute mechanical manipulator.Shen
It asks someone to have applied the Chinese patent of Patent No. 201220135551.5, the mechanical overload largely used at present is protected
The drawbacks of device, has carried out more detailed description, can be had using microcontroller control electronic protector using designed by the patent
Effect solves problem above.And at present in the various starters that largely use, there is also some shortcomings, or remaining power consumption are larger, or
Starting performance is unstable, and the above deficiency can be effectively solved using monolithic processor controlled electronic-type starter.But it is whole from refrigeration machine
From the point of view of the control angle of body, using mutually independent electronic temperature controller, electronic protector and electronic-type starter, need each
From power circuit, control chip, execution circuit, not only increase cost, energy consumption, also add the risk to break down.
Invention content
The technical solution that the application is taken not only overcomes above-mentioned deficiency existing in the prior art, also adds short
Road, overvoltage/undervoltage defencive function provide a kind of simple for structure, multiple functional, easy to use, at low cost, good household system of effect
The control system and its control method of cold.
Technical solution includes used by the application solves above-mentioned technical problem：
A kind of control system of household refrigerators, it is characterized in that by controller, power circuit, temperature sampling circuit, current sample
Circuit, voltage sampling circuit, parameter setting circuit, temperature and alarm indication circuit, total loop switch, auxiliary winding circuit switching group
At controller and power circuit, temperature sampling circuit, current sampling circuit, voltage sampling circuit, parameter setting circuit, temperature
It is all connected with alarm indication circuit, total loop switch, auxiliary winding circuit switching, power circuit, voltage sampling circuit are returned with total
Road both ends of power simultaneously connects, and current sampling circuit, total loop switch, compressor C-terminal are sequentially connected, and auxiliary winding is passed through at the ends compressor S
Circuit switching is connected to total loop power supply N-terminal, and the parameter setting circuit is for short circuit, operating overload, stall, overheat, power supply
Overvoltage/undervoltage Protection parameters are arranged and refrigeration compartment temperature parameter setting, and the temperature and alarm indication circuit are for controller output
Cool room real time temperature, the display that temperature and alarm signal is arranged, controller is respectively to temperature sampling circuit, current sample electricity
Road, voltage sampling circuit carry out real-time sampling, and real-time sampling data is compared with corresponding basic parameter respectively, reaches design
Control（Action）Total loop switch is controlled when standard and auxiliary winding circuit switching executes corresponding action.
The controller may be used various existing controllers and realize, such as microcontroller.The Control Criterion of Design is
Refer to temperature sampling circuit, current sampling circuit, voltage sampling circuit real-time sampling data respectively with corresponding basic parameter into
Row relatively reaches state modulator standard and starts or protect number to reach starting or protection number control standard.
Whether the temperature sampling circuit falls and is freezing for refrigeration compartment temperature sampling and compressor housing temperature sampling
The basis for estimation for controlling and protecting as temperature in temperature range and compressor housing normal temperature range is arranged in room（State modulator
Standard, similarly hereinafter）.
The current sampling circuit is to compressor total loop（Operation）Electric current is sampled, and is fallen in total loop current reference parameter
It is still fallen in range in total loop electric current abnormal operating state（Total loop electric current abnormal operating state can be subdivided into short circuit,
Operating overload, stall）As compressor total loop with the presence or absence of short circuit, the basis for estimation of operating overload, stall in range.
The voltage sampling circuit samples power supply voltage, as power supply sentencing with the presence or absence of overvoltage/undervoltage
Disconnected foundation.
The parameter setting circuit is for short circuit, the setting of operating overload, stall, overheat, power supply overvoltage/undervoltage Protection parameters
With the setting of refrigeration compartment temperature parameter, setting data are sent into after controller handled, as the reference data for comparing and judging.
If operator's not input parameter is given tacit consent to using last arrange parameter or initial parameter（According to this product reality when exploitation
The parameter that border situation debugging determines after the completion）, initial parameter setting is in a control program.
The temperature and alarm indication circuit are for the cool room real time temperature of controller output, setting temperature and alarm signal
Number display.
Total loop switch is that cryogenic temperature control and various protections execute switch, controls opening for refrigeration compressor
Stop.
The auxiliary winding circuit switching is the switch that executes of the booting starting of refrigeration compressor, and control compressor auxiliary winding returns
The mechanical switch of contact had both can be used in the break-make on road, total loop switch and auxiliary winding circuit switching, can also use contactless
Electronic switch.The application control system constitutes complete intelligent control module reduces cost and energy by integrated design
Consumption, reduces the risk to break down.
Technical solution further includes used by the application solves above-mentioned technical problem：
The control method of the control system of above-mentioned household refrigerators, it is characterized in that the temperature including control system initialization, cool room
Spend control, the protection of the starting control of refrigeration compressor, abnormal operating state.
The control system initialization step includes：Controller carries out short circuit by parameter setting circuit, operating overload, blocks up
Turn, the setting of the setting and refrigeration compartment temperature parameter of overheat, power supply overvoltage/undervoltage Protection parameters, controller is set according to refrigeration compartment temperature
Parameter is set to form booting basic parameter and shut down basic parameter；If operator skips the step, gives tacit consent to and set using last
Set parameter or initial parameter.
The temperature controlling step of the cool room：The cool room that controller inputs temperature sampling circuit when work is warm in real time
Degree sampled data received and handled, formed real time temperature data, controller by real time temperature data with booting basic parameter
And/or shut down basic parameter and be compared, when real time temperature data are more than or equal to booting basic parameter, controller control is total to return
Way switch is closed, and opens refrigeration compressor work；When real time temperature data, which are less than, shuts down basic parameter, controller control is total to return
Way switch disconnects, and stops refrigeration compressor work.
The starting control of the refrigeration compressor（Step）：Three basic steps of the step point：Compressor start step, inspection
Look into compressor whether normal starting step, according to compressor, whether normal starting, number of starts reach stipulated number determines
It handles in next step.
Compressor start step is：Total loop switch is closed, compressor operating, and controller control auxiliary winding circuit switching closes
It closes, connects compressor auxiliary winding, after starting reaches the normal starting time, controller controls auxiliary winding circuit switching and disconnects, cut-out
Compressor auxiliary winding circuit.
Whether normal starting step is the inspection compressor：Controller detects total loop electric current by current sampling circuit
It is whether normal（That is total loop current sampling data whether in total loop current reference parameter area, be to be normal, it is no for not just
Often）, with judge compressor whether normal starting.
It is described according to compressor whether normal starting, whether number of starts reaches stipulated number determines next step processing step
For：If total loop electric current is normal, this is started successfully, and number of starts is initial value 1 and exits；If total loop electric current is different
When often and number of starts is not up to stipulated number, number of starts+1, controller rises again after reaching starting time interval twice
It is dynamic（That is rotary compressor set up procedure starts next cycle of the starting control step of refrigeration compressor）；Otherwise it is considered as starting
It is abnormal, it exports corresponding alert data to temperature and alarm indication circuit and carries out alarm indication.
The abnormal operating state protects step：The abnormal operating state is protected：Short circuit, operating overload,
Stall, overheat, the protection of power supply overvoltage/undervoltage, controller judge whether abnormal operating state and protection time occur according to sampled data
Whether number reaches stipulated number（I.e. above-mentioned Control Criterion of Design）It is handled accordingly, when there is not non-normal working shape
It is exited when state.
The controller judges whether abnormal operating state and protection number occur reaches rule according to sampled data
Determine number and carries out corresponding processing step：A controllers pass through temperature sampling circuit, current sampling circuit, voltage sampling circuit point
Other Sampling Compression machine working condition and power supply situation；When compressor total loop current sampling data fall it is non-in total loop electric current
Controller is judged as short circuit when in the short-circuiting range of normal operating conditions；When compressor total loop current sampling data is fallen respectively
Within the scope of the operating overload, stall of total loop electric current abnormal operating state and accumulated time（Operating overload or stall accumulation
Time）Controller is judged as operating overload, stall respectively when reaching the stipulated time；When compressor housing temperature sampling data are big
In overheat basic parameter and accumulated time（Overheat accumulated time）When reaching the stipulated time, controller is judged as overheating；Work as confession
Electric supply voltage sampled data reaches overvoltage/undervoltage basic parameter range and accumulated time（Overvoltage/undervoltage accumulated time）When reaching regulation
Between when, controller i.e. be judged as overvoltage/undervoltage；When three kinds of short circuit, overheat, overvoltage/undervoltage abnormal operating states occur, controller control
Total loop switch processed disconnects, and stops refrigeration compressor work, shows the alarm signal of corresponding abnormal operating state；When running
When two kinds of load, stall abnormal operating states occur, controller controls total loop switch and disconnects, and stops refrigeration compressor and works,
Number+1 is protected, if protection number is not more than stipulated number, is delayed after corresponding resetting time, is powered opens refrigeration pressure again
Contracting machine turns A circulation primaries；If number is protected to be more than stipulated number, the alarm signal of corresponding abnormal operating state is shown；If
There is not abnormal operating state then normally to exit and protection number is reset to zero.
The application compared with prior art, has the following advantages and effect：It is simple for structure, it is multiple functional, it is easy to use, at
This is low, and effect is good.
Description of the drawings
Fig. 1 is the control principle schematic diagram of the prior art.
Fig. 2 is the control principle schematic diagram of the embodiment of the present application.
Specific implementation mode
The application is directed to the deficiency in the presence of current household refrigerators control system, and takes a kind of more optimal control
Scheme processed.The design frame chart of the application such as Fig. 2, this control program are carried out in two steps optimization, and the first step is by the mechanical of compressor
Overload protection function is optimized for Electronic overload protection function, while increasing the overvoltage/undervoltage protection work(of short circuit and power supply voltage
Energy；Former PTC starting controls function optimization is electronic type starting control function；Second step is on the basis of primary electron formula temperature controller
On, Electronic overload protection function and electronic type starting control function are embedded into electronic temperature controller, one-piece type electricity is formed
Minor control program, and by the rational design of hardware circuit and software, realize refrigeration compartment temperature control, compressor start control
System and compressor short circuit, operating overload, overheat, stall, the protection of power supply overvoltage/undervoltage；From figure 2 it can be seen that in one-piece type control
In the circuit of conceptual design, power circuit, intelligent control module are the sharing unit for realizing various controls, and total loop switch is system
What the control of cold house temperature and overload protection control shared executes switch, so by integrated design, not only reduce cost with
Energy consumption, and reduce the risk to break down.
Referring to Fig. 2, the entire control program of the application is by single-chip microprocessor MCU, power circuit, temperature sampling circuit, current sample
Circuit, voltage sampling circuit, parameter setting circuit, temperature and alarm indication circuit, total loop switch, auxiliary winding circuit switching group
At power circuit, voltage sampling circuit and power supply（Total loop）Both ends of power（L、N）And connect, current sampling circuit, total loop are opened
Close, the C-terminal of compressor 1 is sequentially connected, the ends S of compressor 1 are connected to power supply N-terminal by auxiliary winding circuit switching, compress
The ends M of machine 1 are connect with power supply N-terminal.Wherein：
Single-chip microprocessor MCU is the core of entire control system, it receives various sampled datas（Signal, similarly hereinafter）With parameter setting number
According to by flow scheme design requirement progress logical operation process, control total loop switch and the execution of auxiliary winding circuit switching are dynamic accordingly
Make.
Power circuit provides the power supply needed for each unit circuit normal work in entire control system.
Temperature sampling circuit includes various temperature samplings needed for refrigeration temperature control process and overheat of compressor protection when institute
After needing compressor housing temperature sampling, sampled data feeding single-chip microprocessor MCU to be handled, as temperature control and overheat of compressor
The basis for estimation of protection.
Current sampling circuit samples compressor total loop running current, and sampled data is sent into single-chip microprocessor MCU and is handled,
It whether there is the basis for estimation of overcurrent as operating loop.
Voltage sampling circuit samples power supply voltage, and sampled data is sent into single-chip microprocessor MCU and is handled, as
Power supply is that there are the bases for estimation of no overvoltage/undervoltage.
Parameter setting circuit is configured parameters, and arrange parameter is sent into after single-chip microprocessor MCU handled, as than
Compared with the reference data with judgement.
Cool room real time temperature, setting temperature and the alarm signal that temperature and alarm indication circuit export single-chip microprocessor MCU
It is shown.
Total loop switch is that cryogenic temperature control and various protections execute switch, controls the start-stop of refrigeration compressor.
Auxiliary winding circuit switching is the switch that executes of the booting starting of refrigeration compressor, control compressor auxiliary winding circuit
The mechanical switch of contact had both can be used in break-make, total loop switch and auxiliary winding circuit switching, can also use contactless electron
Switch.
The one-piece type control program that the application is taken carries out control system initialization, the control system initialization first
Step includes：Controller carries out short circuit, operating overload, stall, overheat, power supply overvoltage/undervoltage Protection parameters by parameter setting circuit
Setting and refrigeration compartment temperature parameter setting, single-chip microprocessor MCU according to refrigeration compartment temperature arrange parameter formed booting basic parameter
Trk（Such as -6 DEG C）With shutdown basic parameter Trt（Such as -8 DEG C）；If operator skips the step, gives tacit consent to and fallen using last time
Arrange parameter before electricity.
Then the function of following three aspect is realized.
First aspect is the temperature control of cool room, and real-time cryogenic temperature sampled data is obtained by temperature sampling circuit,
Form real time temperature data Tr.Basic parameter and real time data are compared in inside, as Tr >=Trk, single-chip microprocessor MCU control
Total loop switch processed is closed, and opens refrigeration compressor work；Work as Tr<When Trt, single-chip microprocessor MCU controls total loop switch and disconnects, and stops
Only refrigeration compressor works.
Second aspect is the starting control of refrigeration compressor, is closed when total loop switchs, when opening compressor operating, monolithic
Machine MCU control auxiliary winding circuit switchings are closed, and connect compressor auxiliary winding, its starting, starting is made to reach the normal starting time（Example
Such as 0.5S）Afterwards, auxiliary winding circuit switching disconnects, cut-out compressor auxiliary winding circuit；It can be detected at this time by current sampling circuit
Whether running current normal, with judge compressor whether normal starting.If running current is abnormal, reaching the stipulated time（Two
Secondary starting time interval, such as 2S）It starts again afterwards, carries out checking whether normal starting again again after starting process.
So cycle specified period（Such as 3 times）Afterwards, if can't normal starting, that is, be considered as and start abnormal, export corresponding report
Alert data to Display and Alarm Circuit carries out alarm indication.
The third aspect is to realize short circuit, operating overload, stall, overheat, the protection of power supply overvoltage/undervoltage, when refrigeration compressor is rising
In dynamic or operational process, the sampled data on current sampling circuit increases rapidly, and via controller is electric with the short circuit of setting after receiving
Stream basic parameter is compared, and reaches short-circuit standard（I.e. current sampling data is more than short circuit current basic parameter）It is judged as short
Road, single-chip microprocessor MCU control total loop switch and disconnect, and refrigeration compressor is stopped, and plays the role of short-circuit protection；When refrigeration is pressed
In starting or operational process, the sampled data on current sampling circuit increases rapidly contracting machine, via controller receive after with stall
Current reference parameter is compared, when reaching the stipulated time more than locked rotor current basic parameter and accumulated time（Such as 5S）Afterwards,
It is judged as that stall, controller control total loop switch and disconnect, refrigeration compressor is stopped, and plays the role of rotation-clogging protection；
Then controller carries out timing, reaches regulation stall resetting time（Such as 100S）Afterwards, it is powered again and opens refrigeration compressor,
It rejudges and whether there is stall.So cycle specified period（Such as 3 periods）Afterwards, if can't normal starting, output
The alarm signal of stall to temperature and alarm indication circuit carries out alarm indication.When refrigeration compressor in the process of running, electric current
Sampled data on sample circuit becomes larger, via controller receive after be compared with operating overload current reference parameter, when more than
Operating overload current reference parameter and accumulated time reach the defined time（Such as 5min）Afterwards, that is, it is judged as operating overload, controls
Device control total loop switch processed disconnects, and refrigeration compressor is stopped, and plays the role of overload operation protection；Then controller into
Row timing reaches regulation operating overload resetting time（Such as 10min）Afterwards, it is powered again and opens refrigeration compressor, sentence again
It is disconnected to whether there is operating overload.So cycle specified period（Such as 3 periods）Afterwards, if can't normal starting, output fortune
The alarm signal of row overload to temperature and alarm indication circuit carries out alarm indication.When refrigeration compressor occurs in the process of running
When shell overheats, controller receives compressor housing by temperature sampling circuit and crosses dsc data, after being handled, with setting
Overheat basic parameter be compared, when more than overheat basic parameter according to and accumulated time reach the defined time（Such as 1S）Afterwards,
It is judged as overheating, controller controls total loop switch and disconnects, and refrigeration compressor is stopped, and plays the role of overheating protection.
When there is power supply overvoltage/undervoltage in the process of running in refrigeration compressor, after voltage sampling circuit samples be sent into controller with
The overvoltage/undervoltage basic parameter of setting（Over-pressed 285V, under-voltage 154V）It is compared, when reaching overvoltage/undervoltage basic parameter range and tired
The product time reaches the stipulated time（Such as 1S）Afterwards, that is, it is judged as that overvoltage/undervoltage, controller control total loop switch and disconnect, stops refrigeration
Compressor operating plays the role of overvoltage/undervoltage protection.
Herein described normal starting time, twice starting time interval, operating overload or stall accumulated time, overheat are tired
Product time, overvoltage/undervoltage accumulated time, operating overload or stall resetting time, number of starts or protection number are typically each adjusted in design
It is determining and control program is written when examination, it can also be inputted according to actual needs when control system initializes.
Described in this specification above content is only to structure of the invention example explanation；Moreover, this hair
The title that bright each section is taken can also be different, what all structure, feature and principles according to described in inventional idea of the present invention were done etc.
Effect or simple change, are included in the scope of protection of the invention patent.
Claims (8)
1. a kind of control system of household refrigerators, it is characterized in that：It is adopted by controller, power circuit, temperature sampling circuit, electric current
Sample circuit, voltage sampling circuit, parameter setting circuit, temperature and alarm indication circuit, total loop switch, auxiliary winding circuit switching
Composition, controller and power circuit, temperature sampling circuit, current sampling circuit, voltage sampling circuit, parameter setting circuit, temperature
Degree and alarm indication circuit, total loop switch, auxiliary winding circuit switching be all connected with, power circuit, voltage sampling circuit with always
Ring current both ends simultaneously connect, and current sampling circuit, total loop switch, compressor C-terminal are sequentially connected, the ends compressor S by it is secondary around
Group circuit switching is connected to total loop power supply N-terminal, and the parameter setting circuit is for short circuit, operating overload, stall, overheat, electricity
The setting of the setting and refrigeration compartment temperature parameter of source overvoltage/undervoltage Protection parameters, the temperature and alarm indication circuit are used for controller
The cool room real time temperature of output, the display that temperature and alarm signal is arranged, controller control temperature sampling circuit, electric current respectively
Sample circuit, voltage sampling circuit carry out real-time sampling, and real-time sampling data is compared with corresponding basic parameter, reaches respectively
Corresponding action is executed to total loop switch and auxiliary winding circuit switching is controlled when Control Criterion of Design.
2. the control method of the control system of household refrigerators according to claim 1, it is characterized in that including at the beginning of control system
Beginningization, the control of the temperature of cool room, the protection of the starting control of refrigeration compressor, abnormal operating state.
3. the control method of the control system of household refrigerators according to claim 2, it is characterized in that：The temperature of the cool room
Degree controls：Controller carries out sampling to cool room real time temperature by temperature sampling circuit and forms real time temperature data, controls
Device processed by real time temperature data with booting basic parameter and/or shut down basic parameter be compared, when real time temperature data be more than etc.
In be switched on basic parameter when, controller control total loop switch be closed, open refrigeration compressor work；When real time temperature data are small
When shutting down basic parameter, controller controls total loop switch and disconnects, and stops refrigeration compressor work.
4. the control method of the control system of household refrigerators according to claim 2, it is characterized in that：The refrigeration compressor
Starting control include：Compressor start step, check compressor whether normal starting step, whether normally risen according to compressor
Whether dynamic and number of starts, which reaches stipulated number, determines processing in next step.
5. the control method of the control system of household refrigerators according to claim 4, it is characterized in that：The compressor start
Step includes：Total loop switch is closed, and compressor operating, controller controls auxiliary winding circuit switching and is closed, and connects compressor pair
Winding, after starting reaches the normal starting time, controller controls auxiliary winding circuit switching and disconnects, and cut-out compressor auxiliary winding returns
Road.
6. the control method of the control system of household refrigerators according to claim 4, it is characterized in that：It is described according to compressor
Whether whether normal starting and number of starts, which reach stipulated number, determines that processing includes in next step：If total loop electric current is normal,
Then this is started successfully, and number of starts is initial value 1；If total loop current anomaly and number of starts is not up to stipulated number
When, number of starts+1, controller starting compressor again after reaching starting time interval twice；Otherwise it is considered as and starts not just
Often, controller exports corresponding alert data to temperature and alarm indication circuit and carries out alarm indication.
7. the control method of the control system of household refrigerators according to claim 2, it is characterized in that：The non-normal working
State is protected：Short circuit, operating overload, stall, overheat, the protection of power supply overvoltage/undervoltage, controller are according to sampled data judgement
No there is abnormal operating state and whether protection number reaches stipulated number and handled accordingly.
8. the control method of the control system of household refrigerators according to claim 7, it is characterized in that：The controller according to
Sampled data judges whether abnormal operating state and protection number occur reaches stipulated number and carry out corresponding processing step
Suddenly include：Controller distinguishes Sampling Compression machine working condition by temperature sampling circuit, current sampling circuit, voltage sampling circuit
With power supply situation；When compressor total loop current sampling data falls the short-circuit model in total loop electric current abnormal operating state
Controller is judged as short circuit when enclosing interior；When compressor total loop current sampling data respectively falls in the improper work of total loop electric current
Make the operating overload of state, controller is judged as running respectively within the scope of stall and when accumulated time reaches the stipulated time
It carries, stall；When compressor housing temperature sampling data are more than overheat basic parameter and accumulated time reaches the stipulated time, control
Device is judged as overheating；When power supply voltage sample data reach overvoltage/undervoltage basic parameter range and accumulated time reaches regulation
When the time, controller is judged as overvoltage/undervoltage；When three kinds of short circuit, overheat, overvoltage/undervoltage abnormal operating states occur, controller
It controls total loop switch to disconnect, stops refrigeration compressor work, show the alarm signal of corresponding abnormal operating state；Work as operation
When two kinds of overload, stall abnormal operating states occur, controller controls total loop switch and disconnects, and stops refrigeration compressor work
Make, protect number+1, if protection number is not more than stipulated number, after the time-delay reset time, is powered opens refrigerant compression again
Machine；If number is protected to be more than stipulated number, the alarm signal of corresponding abnormal operating state is shown；If not occurring improper
Working condition then normally exits and protection number is reset to zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818266.5A CN108679891A (en) | 2018-07-24 | 2018-07-24 | The control system and its control method of household refrigerators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818266.5A CN108679891A (en) | 2018-07-24 | 2018-07-24 | The control system and its control method of household refrigerators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108679891A true CN108679891A (en) | 2018-10-19 |
Family
ID=63814740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810818266.5A Withdrawn CN108679891A (en) | 2018-07-24 | 2018-07-24 | The control system and its control method of household refrigerators |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108679891A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630388A (en) * | 2018-11-23 | 2019-04-16 | 广东艾高装备科技有限公司 | Operation method, storage medium, air compressor machine and the operating system of air compressor machine |
| CN111197882A (en) * | 2018-11-19 | 2020-05-26 | 艾默生环境优化技术(苏州)有限公司 | Control system with electronic control mode and mechanical control mode and condensing unit |
| CN112165279A (en) * | 2020-09-23 | 2021-01-01 | 长虹华意压缩机股份有限公司 | Control system and method for constant-frequency compressor of refrigeration appliance |
| CN112228327A (en) * | 2020-10-12 | 2021-01-15 | 长虹华意压缩机股份有限公司 | Intelligent control system and method for electronic starting controller |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098778A (en) * | 1993-04-14 | 1995-02-15 | 巴西船用压缩机有限公司 | The control circuit that is used for refrigeration system |
| JP2002272167A (en) * | 2001-03-05 | 2002-09-20 | Toyota Industries Corp | Air conditioner and its drive method |
| US20030177773A1 (en) * | 2002-03-20 | 2003-09-25 | Lg Electronics Inc. | Operation control apparatus and method of linear compressor |
| CN102323835A (en) * | 2011-05-03 | 2012-01-18 | 上海施达电子科技有限公司 | A kind of electronic temperature control device with the compressor start function |
| EP2458728A2 (en) * | 2010-11-30 | 2012-05-30 | B.D.G. el S.r.l. | Motor control systems |
| CN202260404U (en) * | 2011-09-28 | 2012-05-30 | 上海大全赛奥法电气科技有限公司 | Protection controller for low-tension motor |
| CN202616750U (en) * | 2012-03-31 | 2012-12-19 | 杭州星帅尔电器股份有限公司 | Control device for electronic motor protector |
| CN105042966A (en) * | 2015-07-01 | 2015-11-11 | 中国电子科技集团公司第十六研究所 | Gas bearing Stirling crycooler control system and method |
-
2018
- 2018-07-24 CN CN201810818266.5A patent/CN108679891A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098778A (en) * | 1993-04-14 | 1995-02-15 | 巴西船用压缩机有限公司 | The control circuit that is used for refrigeration system |
| US5488834A (en) * | 1993-04-14 | 1996-02-06 | Empresa Brasileira De Compressores S/A - Embraco | Control circuit for a refrigerating system |
| JP2002272167A (en) * | 2001-03-05 | 2002-09-20 | Toyota Industries Corp | Air conditioner and its drive method |
| US20030177773A1 (en) * | 2002-03-20 | 2003-09-25 | Lg Electronics Inc. | Operation control apparatus and method of linear compressor |
| EP2458728A2 (en) * | 2010-11-30 | 2012-05-30 | B.D.G. el S.r.l. | Motor control systems |
| CN102323835A (en) * | 2011-05-03 | 2012-01-18 | 上海施达电子科技有限公司 | A kind of electronic temperature control device with the compressor start function |
| CN202260404U (en) * | 2011-09-28 | 2012-05-30 | 上海大全赛奥法电气科技有限公司 | Protection controller for low-tension motor |
| CN202616750U (en) * | 2012-03-31 | 2012-12-19 | 杭州星帅尔电器股份有限公司 | Control device for electronic motor protector |
| CN105042966A (en) * | 2015-07-01 | 2015-11-11 | 中国电子科技集团公司第十六研究所 | Gas bearing Stirling crycooler control system and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197882A (en) * | 2018-11-19 | 2020-05-26 | 艾默生环境优化技术(苏州)有限公司 | Control system with electronic control mode and mechanical control mode and condensing unit |
| CN109630388A (en) * | 2018-11-23 | 2019-04-16 | 广东艾高装备科技有限公司 | Operation method, storage medium, air compressor machine and the operating system of air compressor machine |
| CN112165279A (en) * | 2020-09-23 | 2021-01-01 | 长虹华意压缩机股份有限公司 | Control system and method for constant-frequency compressor of refrigeration appliance |
| CN112228327A (en) * | 2020-10-12 | 2021-01-15 | 长虹华意压缩机股份有限公司 | Intelligent control system and method for electronic starting controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108679891A (en) | The control system and its control method of household refrigerators | |
| US5222009A (en) | Solid state overload relay | |
| AU734777B2 (en) | Multiple winding sensing control and protection circuit for electric motors | |
| JP4736006B2 (en) | Motor start control device and protection method in motor start | |
| US20040244389A1 (en) | Integrated refrigeration control | |
| CN209136184U (en) | The control device and intelligent appliance of intelligent appliance | |
| EP3447896A1 (en) | Motor control systems | |
| KR20140051827A (en) | Method for starting a single-phase induction motor, starting device for a single-phase motor and starting system therefor | |
| CN208794799U (en) | A kind of control system of household refrigerators | |
| CN108870676B (en) | Anti-tripping control method, device and system and air conditioner | |
| TW201142224A (en) | Remote control device for storage-type eletric water heater and method thereof | |
| US7777992B2 (en) | Motor start circuit | |
| CN104180529B (en) | Water heater and control method thereof | |
| US20100052600A1 (en) | Starting device for electric motors | |
| CN206831846U (en) | Electric heater and its protection device | |
| CN109236627A (en) | Compressor protective circuit, circuit system and air conditioner | |
| CN202616750U (en) | Control device for electronic motor protector | |
| CN208950836U (en) | Compressor protective circuit, circuit system and air conditioner | |
| CN107975913A (en) | Control method, system, readable storage medium storing program for executing and the smart machine of air-conditioning | |
| CN112747353B (en) | Control method, control device and computer readable storage medium | |
| CN207778779U (en) | Electric heater and its control device | |
| CN207145115U (en) | A kind of automotive starter protection circuit | |
| JP5773845B2 (en) | Starting device | |
| CN109990484A (en) | Electric water heater heating control method, device and electric heater | |
| CN110207328A (en) | A kind of control method of air-conditioning, device, storage medium and air-conditioning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181019 |