CN106196449A - A kind of air-conditioning defrost enters the control method for frequency of process, system and air-conditioning - Google Patents
A kind of air-conditioning defrost enters the control method for frequency of process, system and air-conditioning Download PDFInfo
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- CN106196449A CN106196449A CN201610560587.0A CN201610560587A CN106196449A CN 106196449 A CN106196449 A CN 106196449A CN 201610560587 A CN201610560587 A CN 201610560587A CN 106196449 A CN106196449 A CN 106196449A
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- conditioning
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to airconditioning control field, enter the control method for frequency of process, system and air-conditioning particularly to a kind of air-conditioning defrost.Method comprises the following steps: gather current compressor running frequency when meeting air-conditioning defrost condition；Relatively current compressor running frequency and default shutdown frequency, obtain frequency reducing speed and stabilization time according to comparative result；Control compressor according to described frequency reducing speed from current compressor running frequency be down to shut down frequency and to shut down stabilization time described in frequency continuous service after, out of service；After time out of service reaches default dwell time, control compressor and run according to default defrost frequency.The present invention is when judging to need to enter defrost process, suitable control method for frequency is selected according to current compressor running frequency, the coolant pressure filling subrelease making system in frequency control process is put, thus reduce pipe arrangement vibration, pipe arrangement is avoided to break the danger of pipe, reducing noise, the air-conditioning experience sense that improve user is subject to simultaneously.
Description
Technical field
The present invention relates to convertible frequency air-conditioner control field, enter the FREQUENCY CONTROL side of process particularly to a kind of air-conditioning defrost
Method, system and air-conditioning.
Background technology
In frequency-conversion air-conditioning system, when air conditioner heat-production runs, if frosting on outdoor condenser, easily affect air-conditioning
The heat transfer effect of device, air-conditioner needs to perform defrost process guarantee heating effect.In prior art, air-conditioner commonization
Frost action is: first close compressor, and cross valve, outer blower fan time delay a period of time close, then time delay a period of time compressor is by
The defrost frequency set is run, it is determined that when being complete defrost, and compressor is closed, and outer blower fan is opened, time delay a period of time four-way
Valve is opened, then time delay a period of time, and compressor is opened, and recovers normal heat-production functions.When entering the defrost moment, compressor leads to
It is often to run with upper frequency, now direct close compressor, coolant pressure abrupt release out, causes pipe arrangement vibration excessive,
Even there is pipe arrangement to break the danger of pipe, also can produce the biggest noise simultaneously.
Summary of the invention
The invention provides a kind of air-conditioning defrost and enter the control method for frequency of process, system and air-conditioning, solve above
Described technical problem.
The technical scheme is that a kind of air-conditioning defrost enters the FREQUENCY CONTROL side of process
Method, comprises the following steps:
Step 1, gathers current compressor running frequency when meeting air-conditioning defrost condition；
Step 2, compares current compressor running frequency and the shutdown frequency preset, obtains frequency reducing speed according to comparative result
And stabilization time；
Step 3, control compressor according to described frequency reducing speed from current compressor running frequency be down to shut down frequency and with
After shutting down stabilization time described in frequency continuous service, out of service；
Step 4, after the time out of service reaches default dwell time, controls compressor according to default defrost frequency fortune
OK.
The invention has the beneficial effects as follows: the method for the present invention is when judging to need to enter defrost process, according to current compression
The height of machine running frequency selects suitable frequency reducing speed and stabilization time, makes the coolant pressure filling subrelease of frequency-conversion air-conditioning system
Put, thus reduce pipe arrangement vibration, it is to avoid pipe arrangement breaks the danger of pipe, reduces noise simultaneously, improves the air-conditioning experience sense of user
It is subject to.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described step 2 particularly as follows:
S201, determines current compressor running frequency and shuts down the difference of frequency；
S202, selects frequency reducing speed, and the stabilization time that described frequency reducing speed is corresponding according to the described difference determined.
Further, described S202 is particularly as follows: pre-build current compressor running frequency and difference and the fall shutting down frequency
Frequently the related information table of speed, stabilization time, by inquiring about described related information table, obtains described mathematic interpolation result in difference
Stabilization time under frequency reducing speed.
Above-mentioned further scheme is used to provide the benefit that: the further technical scheme of the present invention is by default related information
Table, can quickly find described difference stabilization time under different frequency reducing speed, thus accurately control according to practical situation
Compressor enters the process before defrost, farthest release coolant pressure, shortens the time before entering defrost.
Further, in described related information table, when current compressor running frequency is identical with the difference shutting down frequency, frequency reducing
Speed is the biggest, and described stabilization time is the longest；When frequency reducing speed is identical, current compressor running frequency and the difference shutting down frequency
The biggest, described stabilization time is the longest.
Further, in described related information table, current compressor running frequency is the least with the difference shutting down frequency, and frequency reducing
Speed is the least, more levels off to 0 stabilization time.
Further, the span of described frequency reducing speed is 1～5Hz/s.
Further, the total time being downconverted to from compressor starts terminate described stabilization time is less than 45s.
Further, the total time being downconverted to from compressor starts terminate described stabilization time is less than 35s.
Use above-mentioned further scheme to provide the benefit that: this is further in scheme, by frequency reducing speed and stable time
Between be controlled, thus control compressor starts and be downconverted to the time that compressor runs according to defrost frequency, make air-conditioning change as early as possible
Frost, it is to avoid increase the time of whole defrost process, affect heating effect.
Further, when current compressor running frequency with shut down frequency difference be 50～60Hz, and frequency reducing speed be 1～
During 2Hz/s, stabilization time is 1～2s；When the difference of current compressor running frequency with shutdown frequency is 50～60Hz, and frequency reducing
When speed is 3～5Hz/s, stabilization time is 4～10s.
Further, when current compressor running frequency with shut down frequency difference be 60～70Hz, and frequency reducing speed be 3～
During 5Hz/s, stabilization time is 10～15s；When the difference of current compressor running frequency with shutdown frequency is 10～20Hz, and fall
Frequently, when speed is 1～2Hz/s, stabilization time is 0s.
In order to solve described technical problem, present invention also offers a kind of air-conditioning defrost and enter the FREQUENCY CONTROL system of process
System, including acquisition module, comparison module and control module,
Described acquisition module is for gathering current compressor running frequency when meeting air-conditioning defrost condition；
Described comparison module, for comparing current compressor running frequency and the shutdown frequency preset, obtains according to comparative result
Take frequency reducing speed and stabilization time；
Described control module is used for controlling compressor and is down to stop from current compressor running frequency according to described frequency reducing speed
Unit frequency and to shut down stabilization time described in frequency continuous service after, out of service；And time out of service reaches default stopping
Only after the time, control compressor and run according to default defrost frequency.
Further, described comparison module includes:
Computing unit, for determining current compressor running frequency and shutting down the difference of frequency；
Select unit, for selecting frequency reducing speed according to the described difference that determines, and corresponding steady of described frequency reducing speed
Fix time.
Further, described comparison module also includes that unit set up by related information table, and described related information table is set up unit and used
In the difference pre-building current compressor running frequency and shut down frequency and frequency reducing speed, the related information table of stabilization time；
Described selection unit, by inquiring about described related information table, obtains described difference stabilization time under different frequency reducing speed.
In order to solve described technical problem, present invention also offers a kind of air-conditioning, entered including described air-conditioning defrost
The frequency control system of journey.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that embodiment 1 air-conditioning defrost enters the control method for frequency of process；
Fig. 2 is the structural representation that embodiment 2 air-conditioning defrost enters the frequency control system of process；
Fig. 3 is the structural representation of 3 one kinds of air-conditionings of embodiment.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
Non-for limiting the scope of the present invention.
As it is shown in figure 1, be the schematic flow sheet of the control method for frequency of air-conditioning defrost of the present invention entrance process, including following
Step:
Step 1, gathers current compressor running frequency when meeting air-conditioning defrost condition；
Step 2, compares current compressor running frequency and the shutdown frequency preset, obtains frequency reducing speed according to comparative result
And stabilization time；
Step 3, control compressor according to described frequency reducing speed from current compressor running frequency be down to shut down frequency and with
After shutting down stabilization time described in frequency continuous service, out of service；
Step 4, after the time out of service reaches default dwell time, controls compressor according to default defrost frequency fortune
OK.
The method of the present embodiment judge need enter defrost process time, compare current compressor running frequency and preset
Shut down frequency.If current compressor running frequency is less than or equal to the shutdown frequency preset, controls compressor and directly stop
Run, and after the dwell time through presetting, control compressor and run according to default defrost frequency.If current compressor runs frequency
When rate is more than the shutdown frequency preset, according to the height of current compressor running frequency select suitable frequency reducing speed and stable time
Between, make the coolant pressure filling subrelease of frequency-conversion air-conditioning system put, thus reduce pipe arrangement vibration, it is to avoid pipe arrangement breaks the danger of pipe, simultaneously
Reducing noise, the air-conditioning experience sense that improve user is subject to.
In the present embodiment, described step 2 particularly as follows:
S201, determines current compressor running frequency and shuts down the difference of frequency；
S202, pre-build current compressor running frequency with shut down difference and the frequency reducing speed of frequency, stabilization time
Related information table, by inquiring about described related information table, obtains described mathematic interpolation result stablizing under different frequency reducing speed
Time.
In described related information table in the present invention, when current compressor running frequency is identical with the difference shutting down frequency,
Frequency reducing speed is the biggest, and described stabilization time is the longest；When frequency reducing speed is identical, current compressor running frequency and shutdown frequency
Difference is the biggest, and described stabilization time is the longest.Current compressor running frequency is the least with the difference shutting down frequency, and frequency reducing speed is more
Little, more level off to 0 stabilization time.Meanwhile, the span of described frequency reducing speed is 1～5Hz/s；It is downconverted to from compressor starts
The total time that described stabilization time terminates is less than 45s, preferably less than 35s.
In the present embodiment, if compressor current operation frequency is 84Hz, the shutdown frequency set as 30Hz, frequency reducing speed is
2Hz/s, stabilization time is 2s, then the frequency reducing time is: (84Hz-30Hz)/(2Hz/s)=27s, and total time is 27s+2s=
29s。
If compressor current operation frequency is 84Hz, the shutdown frequency set is 3Hz/s as 30Hz, frequency reducing speed, stable
Time is 5s, then the frequency reducing time is (84Hz-30Hz)/(3Hz/s)=18s, and total time is 18s+5s=23s.
If compressor current operation frequency is 99Hz, the shutdown frequency set is 3Hz/s as 30Hz, frequency reducing speed, stable
Time is 10s, then the frequency reducing time is (99Hz-30Hz)/(3Hz/s)=23s, and total time is 23s+10s=33s.
If compressor current operation frequency is 50Hz, the shutdown frequency set is 2Hz/s as 30Hz, frequency reducing speed, stable
Time is 0s, then the frequency reducing time is (50Hz-30Hz)/(2Hz/s)=10s, and total time is 10s+0s=10s.
In other preferred embodiments, when the difference of current compressor running frequency with shutdown frequency is 50～60Hz, and
When frequency reducing speed is 1～2Hz/s, stabilization time is 1～2s；When the difference of current compressor running frequency with shutdown frequency is 50
～60Hz, and when frequency reducing speed is 3～5Hz/s, stabilization time is 4～8s.When current compressor running frequency and shutdown frequency
Difference be 60～70Hz, and when frequency reducing speed is 3～5Hz/s, stabilization time is 8～15s；When current compressor running frequency
It is 10～20Hz with the difference of shutdown frequency, and when frequency reducing speed is 1～2Hz/s, stabilization time is 0s.
As in figure 2 it is shown, be the structural representation of the frequency control system of embodiment 2 air-conditioning defrost entrance process, including adopting
Collection module, comparison module and control module,
Described acquisition module is for gathering current compressor running frequency when meeting air-conditioning defrost condition；
Described comparison module, for comparing current compressor running frequency and the shutdown frequency preset, obtains according to comparative result
Take frequency reducing speed and stabilization time；
Described control module is used for controlling compressor and is down to stop from current compressor running frequency according to described frequency reducing speed
Unit frequency and to shut down stabilization time described in frequency continuous service after, out of service；And time out of service reaches default stopping
Only after the time, control compressor and run according to default defrost frequency.
In the present embodiment, described comparison module includes:
Computing unit, for calculating current compressor running frequency and shutting down the difference of frequency；
Unit set up by related information table, for the difference and the fall that pre-build current compressor running frequency with shut down frequency
Frequently the related information table of speed, stabilization time；Described selection unit, by inquiring about described related information table, obtains described difference and exists
Stabilization time under different frequency reducing speed；
Select unit, for selecting frequency reducing speed, and the stabilization time that described frequency reducing speed is corresponding according to difference.
As it is shown on figure 3, be the structural representation of 3 one kinds of air-conditionings of embodiment, entered including above-described air-conditioning defrost
The frequency control system of journey.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (13)
1. the control method for frequency of an air-conditioning defrost entrance process, it is characterised in that comprise the following steps:
Step 1, gathers current compressor running frequency when meeting air-conditioning defrost condition；
Step 2, compares current compressor running frequency and the shutdown frequency preset, and obtains frequency reducing speed with steady according to comparative result
Fix time；
Step 3, controls compressor and is down to shut down frequency and to shut down from current compressor running frequency according to described frequency reducing speed
After stabilization time described in frequency continuous service, out of service；
Step 4, after the time out of service reaches default dwell time, controls compressor and runs according to default defrost frequency.
Air-conditioning defrost the most according to claim 1 enters the control method for frequency of process, it is characterised in that described step 2
Particularly as follows:
S201, determines current compressor running frequency and shuts down the difference of frequency；
S202, selects frequency reducing speed, and the stabilization time that described frequency reducing speed is corresponding according to the described difference determined.
Air-conditioning defrost the most according to claim 2 enters the control method for frequency of process, it is characterised in that described S202 has
Body is: pre-build current compressor running frequency and the difference shutting down frequency and frequency reducing speed, the related information of stabilization time
Table, by inquiring about described related information table, obtains described difference stabilization time under different frequency reducing speed.
Air-conditioning defrost the most according to claim 3 enters the control method for frequency of process, it is characterised in that described association is believed
In breath table, when current compressor running frequency is identical with the difference shutting down frequency, frequency reducing speed is the biggest, and described stabilization time is more
Long；When frequency reducing speed is identical, current compressor running frequency is the biggest with the difference shutting down frequency, and described stabilization time is the longest.
Air-conditioning defrost the most according to claim 3 enters the control method for frequency of process, it is characterised in that described association is believed
In breath table, current compressor running frequency is the least with the difference shutting down frequency, and frequency reducing speed is the least, and stabilization time more levels off to
0。
6. the control method for frequency of process is entered according to the arbitrary described air-conditioning defrost of Claims 1 to 5, it is characterised in that from
The total time that compressor starts is downconverted to terminate described stabilization time is less than 45s.
Air-conditioning defrost the most according to claim 6 enters the control method for frequency of process, it is characterised in that open from compressor
The total time beginning to be downconverted to terminate described stabilization time is less than 35s.
Air-conditioning defrost the most according to claim 7 enters the control method for frequency of process, it is characterised in that work as current compression
Machine running frequency is 50～60Hz with the difference of shutdown frequency, and when frequency reducing speed is 1～2Hz/s, stabilization time is 1～2s；
When the difference of current compressor running frequency with shutdown frequency is 50～60Hz, and when frequency reducing speed is 3～5Hz/s, when stablizing
Between be 4～8s.
Air-conditioning defrost the most according to claim 7 enters the control method for frequency of process, it is characterised in that work as current compression
Machine running frequency is 60～70Hz with the difference of shutdown frequency, and when frequency reducing speed is 3～5Hz/s, stabilization time is 8～15s；
When the difference of current compressor running frequency with shutdown frequency is 10～20Hz, and when frequency reducing speed is 1～2Hz/s, when stablizing
Between be 0s.
10. an air-conditioning defrost enters the frequency control system of process, it is characterised in that include acquisition module, comparison module and
Control module,
Described acquisition module is for gathering current compressor running frequency when meeting air-conditioning defrost condition；
Described comparison module, for comparing current compressor running frequency and the shutdown frequency preset, obtains fall according to comparative result
Frequently speed and stabilization time；
Described control module is used for controlling compressor and is down to shut down frequency from current compressor running frequency according to described frequency reducing speed
Rate and to shut down stabilization time described in frequency continuous service after, out of service；And time out of service is when reaching default stopping
After between, control compressor and run according to default defrost frequency.
11. air-conditioning defrosts according to claim 10 enter the frequency control system of process, it is characterised in that described comparison
Module includes:
Computing unit, for determining current compressor running frequency and shutting down the difference of frequency；
Select unit, for selecting frequency reducing speed, and the stabilization time that described frequency reducing speed is corresponding according to described difference.
12. air-conditioning defrosts according to claim 11 enter the frequency control system of process, it is characterised in that described comparison
Module also includes that unit set up by related information table, and described related information table sets up unit for pre-building that current compressor runs
Frequency and difference and frequency reducing speed, the related information table of stabilization time of shutting down frequency；Described selection unit is described by inquiry
Related information table, obtains described difference stabilization time under different frequency reducing speed.
13. 1 kinds of air-conditionings, it is characterised in that include that the arbitrary described air-conditioning defrost of claim 10～12 enters the frequency of process
Control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610560587.0A CN106196449B (en) | 2016-07-13 | 2016-07-13 | A kind of air-conditioning defrost enters control method for frequency, system and the air-conditioning of process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560587.0A CN106196449B (en) | 2016-07-13 | 2016-07-13 | A kind of air-conditioning defrost enters control method for frequency, system and the air-conditioning of process |
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| CN107560259A (en) * | 2017-09-01 | 2018-01-09 | 广东美的暖通设备有限公司 | The low-temperature starting control method and device of multiple on-line system, multiple on-line system |
| CN110513830A (en) * | 2019-08-05 | 2019-11-29 | 宁波奥克斯电气股份有限公司 | A kind of air-conditioning four-way valve reverse control method and control device and air-conditioning |
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| CN110657563A (en) * | 2019-10-08 | 2020-01-07 | 珠海格力电器股份有限公司 | Control method and device for low-temperature heating unit and multi-split air conditioner |
| CN112303813A (en) * | 2020-09-24 | 2021-02-02 | 青岛海信日立空调***有限公司 | Air conditioner and air conditioner defrosting method |
| CN112902483A (en) * | 2021-01-28 | 2021-06-04 | 广东芬尼克兹节能设备有限公司 | Start-stop control method and device for cascade heat pump defrosting compressor |
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| CN112303813A (en) * | 2020-09-24 | 2021-02-02 | 青岛海信日立空调***有限公司 | Air conditioner and air conditioner defrosting method |
| CN112303813B (en) * | 2020-09-24 | 2021-09-24 | 青岛海信日立空调***有限公司 | Air conditioner and air conditioner defrosting method |
| CN112902483A (en) * | 2021-01-28 | 2021-06-04 | 广东芬尼克兹节能设备有限公司 | Start-stop control method and device for cascade heat pump defrosting compressor |
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