CN104848619B - The refrigeration control method and device of refrigerating plant - Google Patents
The refrigeration control method and device of refrigerating plant Download PDFInfo
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- CN104848619B CN104848619B CN201510253009.8A CN201510253009A CN104848619B CN 104848619 B CN104848619 B CN 104848619B CN 201510253009 A CN201510253009 A CN 201510253009A CN 104848619 B CN104848619 B CN 104848619B
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- hot
- heat dissipation
- cold end
- side heat
- thermoelectric module
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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
- F25B49/005—Arrangement or mounting of control or safety devices of 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
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- 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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- 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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/021—Control thereof
-
- 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
- F25B2700/2107—Temperatures of a Peltier element
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of refrigeration control method of refrigerating plant, the refrigeration control method of the refrigerating plant is comprised the following steps：The target gear of refrigerating plant is obtained, control cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module are operated in the target gear；When one of the cold end cooling fan, the hot-side heat dissipation blower fan and described thermoelectric module are abnormal, stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.The invention also discloses a kind of refrigeration control device of refrigerating plant.Present invention achieves the protection to cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module.
Description
Technical field
The present invention relates to refrigeration technology field, more particularly to a kind of refrigeration control method and device of refrigerating plant.
Background technology
It is well known that in the refrigeration control method of existing refrigerating plant, reducing temperature by thermoelectric module in refrigerating box
Degree, in order that the temperature in refrigerating box is down to target temperature, main controller automatically control cold end cooling fan, hot-side heat dissipation blower fan and
The operating of thermoelectric module, and Keep cool the temperature inside the box is constant.But in the refrigeration control method, when cold end radiation air
Machine, or hot-side heat dissipation blower fan, or during thermoelectric module appearance exception, be also operated, so can accordingly shorten cold end and dissipate
Air-heater, or hot-side heat dissipation blower fan, or the service life of thermoelectric module.
The content of the invention
Present invention is primarily targeted at providing a kind of refrigeration control method and device of refrigerating plant, it is intended to realize to cold
The protection of end cooling fan, hot-side heat dissipation blower fan and thermoelectric module.
In order to achieve the above object, the invention provides a kind of refrigeration control method of refrigerating plant, the refrigerating plant
Including cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module, the refrigeration control method of the refrigerating plant includes following
Step：
S1, the target gear for obtaining refrigerating plant, control cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module are equal
It is operated in the target gear；
S2, when one of the cold end cooling fan, the hot-side heat dissipation blower fan and described thermoelectric module are abnormal,
Stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
Preferably, include after step S1：
S3, when the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module be not abnormal, obtain
Environment temperature in refrigerating box；
S4, judge the temperature difference in the refrigerating box between environment temperature and the target temperature whether less than or equal to preset
Temperature threshold；
S5, if so, then control the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module and work
In default gear, and after maintaining the first Preset Time, environment temperature in the refrigerating box is obtained, and proceeds to step S4；
S6, if it is not, then proceeding to step S1.
Preferably, step S2 includes：
When the rotating speed of the cold end cooling fan is more than or equal to the first rotary speed threshold value, or the cold end cooling fan
Rotating speed is less than or equal to the second rotary speed threshold value, and maintains the second Preset Time, then stop the thermoelectric module, the cold end and dissipate
The work of air-heater and the hot-side heat dissipation blower fan.
Preferably, step S2 includes：
When the rotating speed of the hot-side heat dissipation blower fan is more than or equal to the 3rd rotary speed threshold value, or the hot-side heat dissipation blower fan
Rotating speed is less than or equal to the 4th rotary speed threshold value, and maintains the 3rd Preset Time, then stop the thermoelectric module, the cold end and dissipate
The work of air-heater and the hot-side heat dissipation blower fan.
Preferably, step S2 includes：
When the hot-side temperature of the thermoelectric module is more than or equal to the protection temperature of the thermoelectric module, and the is maintained
Four Preset Times, then stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
Additionally, for achieving the above object, present invention also offers a kind of refrigeration control device of refrigerating plant, the refrigeration
Device includes cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module, and the refrigeration control device of the refrigerating plant includes：
Control module, for obtaining the target gear of refrigerating plant, control cold end cooling fan, hot-side heat dissipation blower fan and heat
Electric cooling piece is operated in the target gear；
Exception processing module, for when the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module
When one of them is abnormal, stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
Preferably, the refrigeration control device of the refrigerating plant also includes：
Acquisition module, for working as the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module not
When abnormal, environment temperature in refrigerating box is obtained；
Judge module, for judging whether the temperature difference in the refrigerating box between environment temperature and the target temperature is less than
Or equal to preset temperature threshold；
Switching control module, if for the temperature difference in the refrigerating box between environment temperature and the target temperature be less than or
Equal to preset temperature threshold, then the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module are controlled equal
Default gear is operated in, and after maintaining the first Preset Time, is obtained environment temperature in the refrigerating box, and is sentenced by judge module
Whether the temperature difference in the disconnected refrigerating box between environment temperature and the target temperature is less than or equal to preset temperature threshold；It is no
Then, the refrigerating plant target gear is obtained by control module, control the cold end cooling fan, the hot-side heat dissipation blower fan and
The thermoelectric module is operated in the target gear.
Preferably, the exception processing module is additionally operable to, when the rotating speed of the cold end cooling fan is more than or equal to first
Rotary speed threshold value, or the rotating speed of the cold end cooling fan is less than or equal to the second rotary speed threshold value, and the second Preset Time is maintained,
Then stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
Preferably, the exception processing module is additionally operable to, when the rotating speed of the hot-side heat dissipation blower fan is more than or equal to the 3rd
Rotary speed threshold value, or the rotating speed of the hot-side heat dissipation blower fan is less than or equal to the 4th rotary speed threshold value, and the 3rd Preset Time is maintained,
Then stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
Preferably, the exception processing module is additionally operable to, when the hot-side temperature of the thermoelectric module is more than or equal to institute
The protection temperature of thermoelectric module is stated, and maintains the 4th Preset Time, then stop the thermoelectric module, the cold end radiation air
The work of machine and the hot-side heat dissipation blower fan.
The embodiment of the present invention is equal by cold end cooling fan, hot-side heat dissipation blower fan and the thermoelectric module for controlling refrigerating plant
Target gear is operated in, and when one of the cold end cooling fan, the hot-side heat dissipation blower fan and described thermoelectric module
When abnormal, then stop the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan.It is achieved thereby that radiating to cold end
The protection of blower fan, hot-side heat dissipation blower fan and thermoelectric module.
Description of the drawings
Fig. 1 is the schematic flow sheet of the refrigeration control method first embodiment of refrigerating plant of the present invention；
Fig. 2 is the schematic flow sheet of the refrigeration control method second embodiment of refrigerating plant of the present invention；
Fig. 3 is the high-level schematic functional block diagram of the refrigeration control device first embodiment of refrigerating plant of the present invention；
Fig. 4 is the high-level schematic functional block diagram of the refrigeration control device second embodiment of refrigerating plant of the present invention.
In order that technical scheme is clearer, clear, it is described in further detail below in conjunction with accompanying drawing.
Specific embodiment
It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
The present invention provides a kind of scheme of the refrigeration control of refrigerating plant, and the cold end cooling fan of refrigerating plant, hot junction dissipate
Air-heater and thermoelectric module are operated according to target gear, if cold end cooling fan, hot-side heat dissipation blower fan and thermoelectricity system
When cold one of them is abnormal, stop the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan.It is achieved thereby that
Protection to cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module.
Above-mentioned refrigerating plant includes cold end radiator, hot-side heat dissipation device, cold end cooling fan, hot-side heat dissipation blower fan, thermoelectricity
Cooling piece, refrigerating box, display module, refrigerating box internal temperature detector unit, refrigerating box external temperature detector unit, blower fan signal
Detector unit, air-blower control unit, deposit unit and control device.Wherein, control device includes control module, abnormality processing mould
Block, acquisition module, judge module and switching control module.Control module operates in target gear for controlling refrigerating plant, different
Often processing module is judged for the rotating speed of cold end cooling fan or hot-side heat dissipation blower fan is detected according to blower fan detecting signal unit
Whether cold end cooling fan or hot-side heat dissipation blower fan are abnormal, and abnormal signal is sent to air-blower control unit, so that control
Unit control exception processing module stops the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan.Acquisition module
Environment temperature in refrigerating box is gathered by refrigerating box internal temperature detector unit, so that judge module judges environment temperature in refrigerating box
Whether the temperature difference between degree and target temperature is less than or equal to preset temperature threshold.Switching control module is sentenced according to judge module
Break the temperature difference less than or equal to preset temperature threshold when, adjust refrigerating plant operation.Deposit unit is used to store target
The parameters such as gear, target temperature, display module are used to show gear, target temperature, abnormal information etc..
As shown in figure 1, showing a kind of refrigeration control method first embodiment of refrigerating plant of the invention.The embodiment
The refrigeration control method of refrigerating plant is comprised the following steps：
Step S10, the target gear for obtaining refrigerating plant, control cold end cooling fan, hot-side heat dissipation blower fan and thermoelectricity system
Cold is operated in the target gear；
In the present embodiment, multiple gears of refrigerating plant operation are pre-set, and each gear includes cold end cooling fan
Mapping relations between rotating speed, the rotating speed of hot-side heat dissipation blower fan and the operating voltage of thermoelectric module.The gear is available for user to set
Customization device for cooling operates in certain gear, and the gear of operation also can be selected automatically by refrigerating plant.Each gear is radiated with cold end
The rotating speed of blower fan, the mapping relations between the rotating speed of hot-side heat dissipation blower fan and the operating voltage of thermoelectric module, as shown in table 1：
The operating voltage of the rotating speed, the rotating speed of hot-side heat dissipation blower fan and thermoelectric module of 1. gear of table and cold end cooling fan
Between mapping relations
As shown in Table 1, it is assumed that the gear of refrigerating plant currently operation is 3 grades, then the cold end cooling fan of refrigerating plant is transported
Capable rotating speed is N30, the rotating speed of hot-side heat dissipation fan operation is N31, and the operating voltage of thermoelectric module is U3.In table 1, preferably
Ground, can arrange Nn0>…>N30>N20>N10, Nn1>…>N31>N21>N11, Un>…>U3>U2>U1, gear number N of gear can set
6 grades are set to, are flexibly arranged also dependent on concrete condition, do not limit the present invention.
After refrigerating plant starts, the cold end cooling fan of refrigerating plant, hot-side heat dissipation blower fan and thermoelectric module according to
Target gear works.The target gear is that user is set by the preset button of refrigerating plant, touch-screen, remote control etc.
Gear.The target temperature is the temperature set by the preset button of refrigerating plant, touch-screen, remote control etc. by user.For
Extend the life-span of thermoelectric module, after refrigerating plant starts, cold end cooling fan and hot-side heat dissipation blower fan are first opened, and according to
The corresponding rotary speed working of target gear, after the first preset time, thermoelectric module is then turned on, and according to target gear
Corresponding operating voltage work.First preset time can be 1S, or flexibly be arranged as the case may be.If user
Target temperature is not set, then refrigerating plant operation target temperature can be last time shutdown before temperature, or
Preset default temperature, for example, 26 DEG C.If user is not set to target gear, refrigerating plant can shut down according to last time
Front gear operation, also can be according to the operation of the gear of acquiescence, it is preferable that the gear of the acquiescence is the most strong gear of refrigeration degree, with
The temperature of refrigerating box is enable to be rapidly achieved target temperature.Certainly, the gear of the acquiescence is carried out flexibly also dependent on concrete condition
Arrange.
Step S20, when one of the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module it is different
Chang Shi, stops the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
Refrigerating plant during operation, when cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module wherein it
One it is abnormal when, it will stop the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan.
Specifically, refrigerating plant detects cold end radiation air respectively by blower fan detecting signal unit during operation
The rotating speed of the rotating speed and hot-side heat dissipation blower fan of machine, judges cold end cooling fan with the presence or absence of abnormal, i.e., when cold end cooling fan
Rotating speed is more than or equal to the first rotary speed threshold value, or the rotating speed of cold end cooling fan is less than or equal to the second rotary speed threshold value, and ties up
The second Preset Time is held, then stops the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan, and by showing mould
Block shows the abnormal information, to point out user.In order to preferably extend the life-span of thermoelectric module, it is preferable that different when occurring
During reason condition, first stop the work of thermoelectric module, after the second preset time, stop cold end cooling fan and hot-side heat dissipation
The work of blower fan.Second preset time can be 2S, or flexibly be arranged as the case may be.First rotary speed threshold value can
4000rad/min is set to, second rotary speed threshold value may be configured as 500rad/min, second Preset Time may be configured as 1 point
Clock.It is understood that the first rotary speed threshold value, the second rotary speed threshold value and the second Preset Time carry out spirit also dependent on concrete condition
It is living to arrange, do not limit the present invention.
Judge cold end cooling fan with the presence or absence of it is abnormal while, also will determine that whether hot-side heat dissipation blower fan abnormal, i.e., when
The rotating speed of hot-side heat dissipation blower fan is more than or equal to the 3rd rotary speed threshold value, or the rotating speed of hot-side heat dissipation blower fan is less than or equal to the 4th
Rotary speed threshold value, and maintain the 3rd Preset Time, then stop the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan
Make, and the abnormal information is shown by display module, to point out user.Likewise, in order to preferably extend thermoelectric module
Life-span, when there are abnormal conditions, after first stopping the work 2S of thermoelectric module, then stop cold end cooling fan and hot junction and dissipate
The work of air-heater.Second rotary speed threshold value may be configured as 3000rad/min, and the 3rd rotary speed threshold value may be configured as 600rad/
Min, the 3rd Preset Time may be configured as 1 minute.It is understood that the 3rd rotary speed threshold value, the 4th rotary speed threshold value and the 3rd
Preset Time is flexibly arranged also dependent on concrete condition, does not limit the present invention.
While cold end cooling fan being judged with the presence or absence of exception, also will determine that whether the hot-side heat dissipation of thermoelectric module is different
Often, the heat of thermoelectric module can be gathered by being installed on the temperature sensor of the hot-side heat dissipation device thermal self-restraint stress of thermoelectric module
End temperature.When the hot-side temperature of thermoelectric module is more than or equal to the protection temperature of thermoelectric module, and when maintaining the 4th to preset
Between, then stop the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan, and the exception is shown by display module
Information, to point out user.Likewise, the life-span in order to preferably extend thermoelectric module, when there are abnormal conditions, can be first
After stopping the work 2S of thermoelectric module, then the work for stopping cold end cooling fan and hot-side heat dissipation blower fan.The thermoelectric module
Protection temperature for thermoelectric module limiting temperature Tmax, for example, Tmax=65 DEG C.4th Preset Time may be configured as 2
Minute.It is understood that protection temperature and the 4th Preset Time are flexibly arranged also dependent on concrete condition, do not limit
The present invention.
The embodiment of the present invention is operated in target by controlling cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module
Gear, and when one of cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module are abnormal, stopping thermoelectric module,
The work of cold end cooling fan and hot-side heat dissipation blower fan.It is achieved thereby that to cold end cooling fan, hot-side heat dissipation blower fan and thermoelectricity
The protection of cooling piece.
Further, as shown in Fig. 2 being based on above-described embodiment, following steps after above-mentioned steps S10, be may include：
Step S30, judge one of the cold end cooling fan, the hot-side heat dissipation blower fan and described thermoelectric module
It is whether abnormal；If so, above-mentioned steps S20 are performed；If it is not, then execution step S40；
Environment temperature in step S40, acquisition refrigerating box；
Step S50, judge whether the temperature difference in the refrigerating box between environment temperature and the target temperature is less than or waits
In preset temperature threshold；If so, then execution step S60；If it is not, then performing above-mentioned steps S10；
Step S60, the control cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module are operated in
Default gear, and maintain the first Preset Time, execution step S40.
When cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module it is abnormal, then by refrigerating box internal temperature
Environment temperature in the refrigerating box of detector unit collection.Environment temperature in the refrigerating box for obtaining and target temperature are carried out differing from ratio
Compared with environment temperature T1- target temperature Ts that is, in temperature difference T=refrigerating box.If the temperature threshold of temperature difference T≤preset, is adjusted
Refrigerating plant operates in default gear, and the default gear can be the gear of most energy-conservation, the i.e. operating voltage of thermoelectric module
Minimum gear, for example, the 1st grade.Control cold end cooling fan and hot-side heat dissipation blower fan are run according to the corresponding rotating speed of the gear,
Electric cooling piece is operated according to the corresponding operating voltage of the gear.The preset temperature threshold may be configured as a value, and such as 1
℃；It can also be provided that the value range of a permission, such as [- 2 DEG C ,+2 DEG C] are configured according to actual conditions.
After the first Preset Time, continuation is according to environment in the refrigerating box of refrigerating box internal temperature detector unit collection
Temperature is compared with target temperature, judges whether the temperature difference in refrigerating box between environment temperature and target temperature is less than or equal to
Preset temperature threshold, until temperature difference T>Preset temperature threshold.First Preset Time can carry out spirit as the case may be
It is living to arrange, for example, may be configured as 10 minutes.If temperature difference T in refrigerating box between environment temperature and target temperature is more than preset
Temperature threshold, then reacquire the target gear of refrigerating plant operation, control cold end cooling fan, hot-side heat dissipation blower fan and heat
Electric cooling piece is operated in the target gear, i.e. circulation performs above-mentioned steps S10 to step S60, until refrigerating plant stops fortune
OK.
Accordingly, as shown in figure 3, proposing a kind of refrigeration control device first embodiment of refrigerating plant of the invention.The reality
The refrigeration control device for applying the refrigerating plant of example includes：
Control module 100, for obtaining the target gear of refrigerating plant, control cold end cooling fan, hot-side heat dissipation blower fan
And thermoelectric module is operated in the target gear；
In the present embodiment, multiple gears of refrigerating plant operation are pre-set, and each gear includes cold end cooling fan
Mapping relations between rotating speed, the rotating speed of hot-side heat dissipation blower fan and the operating voltage of thermoelectric module.The gear is available for user to set
Customization device for cooling operates in certain gear, and the gear of operation also can be selected automatically by refrigerating plant.Each gear is radiated with cold end
The rotating speed of blower fan, the mapping relations between the rotating speed of hot-side heat dissipation blower fan and the operating voltage of thermoelectric module, as shown in table 1：
The operating voltage of the rotating speed, the rotating speed of hot-side heat dissipation blower fan and thermoelectric module of 1. gear of table and cold end cooling fan
Between mapping relations
As shown in Table 1, it is assumed that the gear of refrigerating plant currently operation is 3 grades, then the cold end cooling fan of refrigerating plant is transported
Capable rotating speed is N30, the rotating speed of hot-side heat dissipation fan operation is N31, and the operating voltage of thermoelectric module is U3.In table 1, preferably
Ground, can arrange Nn0>…>N30>N20>N10, Nn1>…>N31>N21>N11, Un>…>U3>U2>U1, gear number N of gear can set
6 grades are set to, are flexibly arranged also dependent on concrete condition, do not limit the present invention.
After refrigerating plant starts, control module 100 controls cold end cooling fan, hot-side heat dissipation blower fan and the heat of refrigerating plant
Electric cooling piece works according to target gear.The target gear is user by the preset button of refrigerating plant, touch-screen, remote control
The gear set by device etc..The target temperature is that user is carried out by the preset button of refrigerating plant, touch-screen, remote control etc.
The temperature of setting.In order to extend the life-span of thermoelectric module, after refrigerating plant starts, the control cold end radiation air of control module 100
Machine and hot-side heat dissipation blower fan are first opened, and according to the corresponding rotary speed working of target gear, after the first preset time, thermoelectricity
Cooling piece is then turned on, and according to the corresponding operating voltage work of target gear.First preset time can be 1S, Huo Zhegen
Flexibly arranged according to concrete condition.If user is not set to target temperature, the target temperature of refrigerating plant operation can
Be last time shutdown before temperature, or preset default temperature, for example, 26 DEG C.If user is not carried out to target gear
Setting, then refrigerating plant can be according to the gear operation before last time shutdown, also can be according to the operation of the gear of acquiescence, it is preferable that this is write from memory
The gear recognized is the most strong gear of refrigeration degree, so that the temperature of refrigerating box can be rapidly achieved target temperature.Certainly, the acquiescence
Gear is flexibly arranged also dependent on concrete condition.
Exception processing module 200, for when the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric cooling
When one of piece is abnormal, stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
Refrigerating plant calls exception processing module 200 in cold end cooling fan, hot-side heat dissipation blower fan during operation
And one of thermoelectric module it is abnormal when, stop the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan.
Specifically, refrigerating plant calls exception processing module 200 to pass through blower fan detecting signal unit during operation
The rotating speed of the rotating speed and hot-side heat dissipation blower fan of cold end cooling fan is detected respectively, judges cold end cooling fan with the presence or absence of exception,
I.e. when the rotating speed of cold end cooling fan is more than or equal to the first rotary speed threshold value, or the rotating speed of cold end cooling fan is less than or equal to
Second rotary speed threshold value, and maintain the second Preset Time, then stop thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan
Work, and the abnormal information is shown by display module, to point out user.In order to preferably extend the longevity of thermoelectric module
Life, it is preferable that when there are abnormal conditions, first stops the work of thermoelectric module, after the second preset time, stops cold end
The work of cooling fan and hot-side heat dissipation blower fan.Second preset time can be 2S, or flexibly be set as the case may be
Put.First rotary speed threshold value may be configured as 4000rad/min, and second rotary speed threshold value may be configured as 500rad/min, and this second
Preset Time may be configured as 1 minute.It is understood that the first rotary speed threshold value, the second rotary speed threshold value and the second Preset Time
Can flexibly be arranged as the case may be, not limited the present invention.
While exception processing module 200 judges cold end cooling fan with the presence or absence of exception, hot-side heat dissipation wind is also will determine that
Whether machine is abnormal, i.e., when the rotating speed of hot-side heat dissipation blower fan is more than or equal to the 3rd rotary speed threshold value, or hot-side heat dissipation blower fan turns
Speed is less than or equal to the 4th rotary speed threshold value, and maintains the 3rd Preset Time, then stop thermoelectric module, cold end cooling fan and heat
The work of end cooling fan, and the abnormal information is shown by display module, to point out user.Likewise, in order to preferably
Extend thermoelectric module life-span, when there are abnormal conditions, first stop thermoelectric module work 2S after, then stop cold end dissipate
The work of air-heater and hot-side heat dissipation blower fan.Second rotary speed threshold value may be configured as 3000rad/min, and the 3rd rotary speed threshold value can
600rad/min is set to, the 3rd Preset Time may be configured as 1 minute.It is understood that the 3rd rotary speed threshold value, the 4th turn
Fast threshold value and the 3rd Preset Time are flexibly arranged also dependent on concrete condition, do not limit the present invention.
While exception processing module 200 judges cold end cooling fan with the presence or absence of exception, thermoelectric module is also will determine that
Hot-side heat dissipation it is whether abnormal, can be adopted by being installed on the temperature sensor of the hot-side heat dissipation device thermal self-restraint stress of thermoelectric module
The hot-side temperature of collection thermoelectric module.When the hot-side temperature of thermoelectric module is more than or equal to the protection temperature of thermoelectric module,
And maintain the 4th Preset Time, then stop the work of thermoelectric module, cold end cooling fan and hot-side heat dissipation blower fan, and by aobvious
Show that module shows the abnormal information, to point out user.Likewise, the life-span in order to preferably extend thermoelectric module, when going out
During existing abnormal conditions, after can first stopping the work 2S of thermoelectric module, then stop cold end cooling fan and hot-side heat dissipation blower fan
Work.Limiting temperature Tmax of the protection temperature of the thermoelectric module for thermoelectric module, for example, Tmax=65 DEG C.4th
Preset Time may be configured as 2 minutes.It is understood that protection temperature and the 4th Preset Time are carried out also dependent on concrete condition
Flexibly arrange, do not limit the present invention.
The embodiment of the present invention is operated in target by controlling cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module
Gear, and when one of cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module are abnormal, stopping thermoelectric module,
The work of cold end cooling fan and hot-side heat dissipation blower fan.It is achieved thereby that to cold end cooling fan, hot-side heat dissipation blower fan and thermoelectricity
The protection of cooling piece.
Further, as shown in figure 4, being based on above-described embodiment, the refrigeration control device of above-mentioned refrigerating plant also includes：
Acquisition module 300, it is equal for working as the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module
When not abnormal, environment temperature in refrigerating box is obtained；
Judge module 400, for judging the temperature difference in the refrigerating box between environment temperature and the target temperature whether
Less than or equal to preset temperature threshold；
Switching control module 500, if little for the temperature difference in the refrigerating box between environment temperature and the target temperature
In or equal to preset temperature threshold, then control the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric cooling
Piece is operated in default gear, and after maintaining the first Preset Time, obtains environment temperature in the refrigerating box, and by judging mould
Block judges whether the temperature difference in the refrigerating box between environment temperature and the target temperature is less than or equal to preset temperature threshold
Value；Otherwise, the refrigerating plant target gear is obtained by control module, controls the cold end cooling fan, the hot-side heat dissipation
Blower fan and the thermoelectric module are operated in the target gear.
When cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module be not abnormal, then acquisition module 300 is by refrigeration
Environment temperature in the refrigerating box of case internal temperature detector unit collection.Judge module 400 is by environment temperature in the refrigerating box for obtaining
Work difference is carried out with target temperature to compare, i.e., environment temperature T1- target temperature Ts in temperature difference T=refrigerating box.If temperature difference T≤pre-
The temperature threshold put, then switching control module 500 adjust refrigerating plant and operate in default gear, the default gear can be for most
The minimum gear of the operating voltage of the gear of energy-conservation, i.e. thermoelectric module, for example, the 1st grade.Control cold end cooling fan and hot junction
Cooling fan is operated according to the corresponding operating voltage of the gear according to the corresponding rotating speed operation of the gear, electric cooling piece.Should
Preset temperature threshold may be configured as a value, such as 1 DEG C；It can also be provided that the value range of a permission, for example [- 2 DEG C ,+
2 DEG C], it is configured according to actual conditions.
After the first Preset Time, switching control module 500 continues to be adopted according to refrigerating box internal temperature detector unit
In the refrigerating box of collection, environment temperature is compared with target temperature, judges environment temperature and mesh in refrigerating box by judge module 400
Whether the temperature difference between mark temperature is less than or equal to preset temperature threshold, until temperature difference T>Preset temperature threshold.This
One Preset Time flexibly can be arranged as the case may be, for example, may be configured as 10 minutes.If in refrigerating box environment temperature with
Temperature difference T between target temperature is more than preset temperature threshold, then reacquire refrigerating plant operation by control module 100
Target gear, control cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module are operated in the target gear.
It should be noted that herein, term " including ", "comprising" or its any other variant are intended to non-row
His property is included, so that a series of process, method, article or device including key elements not only include those key elements, and
And also include other key elements being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element for being limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
Also there is other identical element in the process of key element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
The part for going out contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), use so that a station terminal equipment including some instructions (can be mobile phone, computer, clothes
Business device, refrigerating plant, or network equipment etc.) perform method described in each embodiment of the invention.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of refrigeration control method of refrigerating plant, it is characterised in that the refrigerating plant includes cold end cooling fan, hot junction
Cooling fan and thermoelectric module, the refrigeration control method of the refrigerating plant are comprised the following steps：
S1, the target gear for obtaining refrigerating plant, control cold end cooling fan, hot-side heat dissipation blower fan and thermoelectric module work
In the target gear；
S2, when one of the cold end cooling fan, the hot-side heat dissipation blower fan and described thermoelectric module are abnormal, stop
The work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan；
Wherein, include after step S1：
S3, when the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module be not abnormal, obtain refrigeration
Environment temperature in case；
S4, judge the temperature difference in the refrigerating box between environment temperature and the target temperature whether less than or equal to preset temperature
Degree threshold value；
S5, if so, then control the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module be operated in it is pre-
If gear, and after maintaining the first Preset Time, obtain environment temperature in the refrigerating box, and proceed to step S4；
S6, if it is not, then proceeding to step S1.
2. the refrigeration control method of refrigerating plant as claimed in claim 1, it is characterised in that step S2 includes：
When the rotating speed of the cold end cooling fan is more than or equal to the first rotary speed threshold value, or the rotating speed of the cold end cooling fan
Less than or equal to the second rotary speed threshold value, and the second Preset Time is maintained, then stop the thermoelectric module, the cold end radiation air
The work of machine and the hot-side heat dissipation blower fan.
3. the refrigeration control method of refrigerating plant as claimed in claim 1, it is characterised in that step S2 includes：
When the rotating speed of the hot-side heat dissipation blower fan is more than or equal to the 3rd rotary speed threshold value, or the rotating speed of the hot-side heat dissipation blower fan
Less than or equal to the 4th rotary speed threshold value, and the 3rd Preset Time is maintained, then stop the thermoelectric module, the cold end radiation air
The work of machine and the hot-side heat dissipation blower fan.
4. the refrigeration control method of refrigerating plant as claimed in claim 1, it is characterised in that step S2 includes：
When the hot-side temperature of the thermoelectric module is more than or equal to the protection temperature of the thermoelectric module, and remain the 4th pre-
If the time, then stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
5. a kind of refrigeration control device of refrigerating plant, it is characterised in that the refrigerating plant includes cold end cooling fan, hot junction
Cooling fan and thermoelectric module, the refrigeration control device of the refrigerating plant include：
Control module, for obtaining the target gear of refrigerating plant, control cold end cooling fan, hot-side heat dissipation blower fan and thermoelectricity system
Cold is operated in the target gear；
Exception processing module, for working as the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module wherein
One of it is abnormal when, stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan；
Wherein, the refrigeration control device of the refrigerating plant also includes：
Acquisition module, it is not abnormal for working as the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module
When, obtain environment temperature in refrigerating box；
Judge module, for judging whether the temperature difference in the refrigerating box between environment temperature and the target temperature is less than or waits
In preset temperature threshold；
Switching control module, if being less than or equal to for the temperature difference in the refrigerating box between environment temperature and the target temperature
Preset temperature threshold, then control the cold end cooling fan, the hot-side heat dissipation blower fan and the thermoelectric module and work
In default gear, and after maintaining the first Preset Time, environment temperature in the refrigerating box is obtained, and institute is judged by judge module
The temperature difference in refrigerating box between environment temperature and the target temperature is stated whether less than or equal to preset temperature threshold；Otherwise,
The refrigerating plant target gear is obtained by control module, the cold end cooling fan, the hot-side heat dissipation blower fan and institute is controlled
State thermoelectric module and be operated in the target gear.
6. the refrigeration control device of refrigerating plant as claimed in claim 5, it is characterised in that the exception processing module is also used
In when the rotating speed of the cold end cooling fan is more than or equal to the first rotary speed threshold value, or the rotating speed of the cold end cooling fan
Less than or equal to the second rotary speed threshold value, and the second Preset Time is maintained, then stop the thermoelectric module, the cold end radiation air
The work of machine and the hot-side heat dissipation blower fan.
7. the refrigeration control device of refrigerating plant as claimed in claim 5, it is characterised in that the exception processing module is also used
In when the rotating speed of the hot-side heat dissipation blower fan is more than or equal to the 3rd rotary speed threshold value, or the rotating speed of the hot-side heat dissipation blower fan
Less than or equal to the 4th rotary speed threshold value, and the 3rd Preset Time is maintained, then stop the thermoelectric module, the cold end radiation air
The work of machine and the hot-side heat dissipation blower fan.
8. the refrigeration control device of refrigerating plant as claimed in claim 5, it is characterised in that the exception processing module is also used
In when the hot-side temperature of the thermoelectric module is more than or equal to the protection temperature of the thermoelectric module, and remaining the 4th pre-
If the time, then stop the work of the thermoelectric module, the cold end cooling fan and the hot-side heat dissipation blower fan.
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| CN108650862B (en) * | 2018-07-13 | 2019-04-23 | 北京华悦龙驰科技有限公司 | A kind of rapid cooling method and device based on semiconductor refrigerating technology |
| US11193697B2 (en) * | 2019-01-08 | 2021-12-07 | Haier Us Appliance Solutions, Inc. | Fan speed control method for caloric heat pump systems |
| CN111174507A (en) * | 2020-03-13 | 2020-05-19 | 海信容声(广东)冷柜有限公司 | Refrigerator and control method thereof |
| CN111736569A (en) * | 2020-05-29 | 2020-10-02 | 维沃移动通信有限公司 | Fault monitoring method of heat dissipation device, heat dissipation device and electronic equipment |
| CN114111197A (en) * | 2020-08-28 | 2022-03-01 | 青岛海尔特种电冰柜有限公司 | Control method of refrigeration appliance and refrigeration appliance |
| CN113814110A (en) * | 2020-09-03 | 2021-12-21 | 常州铭赛机器人科技股份有限公司 | Refrigeration system and control method thereof |
| CN115077236A (en) * | 2022-07-01 | 2022-09-20 | 长虹美菱股份有限公司 | Refrigerator cooling fan detecting system |
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| CN201278626Y (en) * | 2008-08-19 | 2009-07-22 | 中兴通讯股份有限公司 | Temperature lowering apparatus for network appliance |
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