CN109236622A - A kind of compressor frequency control method, device and air conditioner - Google Patents
A kind of compressor frequency control method, device and air conditioner Download PDFInfo
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- CN109236622A CN109236622A CN201811110293.3A CN201811110293A CN109236622A CN 109236622 A CN109236622 A CN 109236622A CN 201811110293 A CN201811110293 A CN 201811110293A CN 109236622 A CN109236622 A CN 109236622A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000008859 change Effects 0.000 claims description 140
- 230000006870 function Effects 0.000 claims description 14
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本发明提供了一种压缩机频率控制方法、装置及空调器，涉及空调器技术领域。该方法及装置通过获取高压压力以及智能功率模块温度，并基于所述高压压力以及所述智能功率模块温度控制压缩机频率；由于综合高压压力以及智能功率模块温度，使高压压力以及智能功率模块温度的保护阈值尽可能匹配，从而在控制压缩机频率时能够避免由于高压压力或智能功率模块温度中的任意一个达到保护阈值时，便对压缩机进行限频或降频操作，使高压压力以及智能功率模块温度更接近临界值，从而提升空调器的高温制冷量。
The invention provides a compressor frequency control method, device and air conditioner, and relates to the technical field of air conditioners. The method and device obtain the high pressure pressure and the temperature of the intelligent power module, and control the frequency of the compressor based on the high pressure pressure and the temperature of the intelligent power module; The protection threshold value of the inverter is matched as much as possible, so that when the compressor frequency is controlled, it can be avoided that the compressor will be limited or frequency-reduced when either the high-pressure pressure or the temperature of the intelligent power module reaches the protection threshold, so that the high-pressure pressure and intelligent The power module temperature is closer to the critical value, thereby increasing the high-temperature cooling capacity of the air conditioner.
Description
Technical field
The present invention relates to air conditioner technical field, in particular to a kind of compressor frequency control method, device and air conditioner.
Background technique
Air conditioner is a kind of widely used apparatus of air conditioning, and major function is adjusted to temperature, the humidity of air
Section, transducer air conditioning have many advantages, such as energy saving, comfortable for common air-conditioner with fixed frequency.
Normally, high-temperature refrigeration amount/rated cooling capacity ratio is required to be greater than in the high-temperature refrigeration amount national standard of air-conditioning system
Or being equal to 85%, but the surplus of the ratio is smaller in actual test, i.e. high-temperature refrigeration amount is smaller, and influences high-temperature refrigeration amount
Principal element is: being on the one hand when air-conditioning is under the conditions of refrigeration work, with the raising of outdoor temperature, compressor rotary speed
To accelerate, electric current increases, and cause intelligent power module (Intelligent Power Module, IPM module) temperature to increase, and one
When denier intelligent power module temperature is greater than or equal to compressor module frequency limit temperature, just compressor frequency is forbidden to rise, however this
When high-temperature refrigeration amount do not give full play to；It on the other hand is that air-conditioning is run under worst hot case, the load of system increases, under the state
Evaporating temperature and condensation temperature all can be promoted accordingly, once when the pressure of air-conditioning system reaches protection value, will to compressor into
Row limit frequency redution operation, the condition also restrict the ability of high-temperature refrigeration amount.
Summary of the invention
In view of this, the present invention is directed to propose a kind of compressor frequency control method, device and air conditioner, above-mentioned to solve
Problem.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
In a first aspect, the present invention provides a kind of compressor frequency control method, the compressor frequency control method packet
It includes:
Obtain high-pressure and intelligent power module temperature；
Compressor frequency is controlled based on the high-pressure and the intelligent power module temperature.
Further, described that compressor frequency is controlled based on the high-pressure and the intelligent power module temperature
Step includes:
Determine the second range where the first range and the intelligent power module temperature where the high-pressure；
The change rate of compressor frequency is determined according to first range and second range；
The compressor frequency is controlled based on the change rate.
Further, the step of the change rate that compressor frequency is determined according to first range and second range
Suddenly include:
As P < P1, T < T1, determine that the change rate of the compressor frequency is normal change rate；
As P < P1, T1≤T < T2, determine that the change rate of the compressor frequency is the first change rate；
As P < P1, T2≤T < T3, determine that the change rate of the compressor frequency is the second change rate；
As P<P1, T>=T3, determine that the change rate of the compressor frequency is 0；
Wherein, P is high-pressure, and P1 is presetting first pressure threshold value, and T is intelligent power module temperature, and T1 is pre-
First temperature threshold of setting, T2 are presetting second temperature threshold value, and T3 is presetting third temperature threshold.
Further, the step of the change rate that compressor frequency is determined according to first range and second range
Suddenly include:
As P1≤P < P2, T < T1, determine that the change rate of the compressor frequency is third change rate；
As P1≤P < P2, T1≤T < T2, determine that the change rate of the compressor frequency is the 4th change rate；
As P1≤P < P2, T2≤T < T3, determine that the change rate of the compressor frequency is the 5th change rate；
As P1≤P<P2, T>=T3, determine that the change rate of the compressor frequency is 0；
Wherein, P is high-pressure, and P1 is presetting first pressure threshold value, and P2 is presetting second pressure threshold value, T
For intelligent power module temperature, T1 is the first presetting temperature threshold, and T2 is presetting second temperature threshold value, and T3 is default
Fixed third temperature threshold.
Further, described that compressor frequency is controlled based on the high-pressure and the intelligent power module temperature
Step includes:
As P2≤P < P3, T < T1, determine that the change rate of the compressor frequency is the 6th change rate；
As P2≤P < P3, T1≤T < T2, determine that the change rate of the compressor frequency is the 7th change rate；
As P2≤P < P3, T2≤T < T3, determine that the change rate of the compressor frequency is 0；
Wherein, P is high-pressure, and P1 is presetting first pressure threshold value, and P2 is presetting second pressure threshold value, P3
For presetting third pressure threshold, T is intelligent power module temperature, and T1 is the first presetting temperature threshold, and T2 is default
Fixed second temperature threshold value, T3 are presetting third temperature threshold.
Further, described that compressor frequency is controlled based on the high-pressure and the intelligent power module temperature
Step includes:
As P >=P3 or T >=T3, determine that the change rate of the compressor frequency is 0；Wherein, P is high-pressure, and P3 is
Presetting third pressure threshold, T are intelligent power module temperature, and T3 is presetting third temperature threshold.
Second aspect, the present invention provides a kind of compressor frequency control device, the compressor frequency control device packet
It includes:
Parameter acquiring unit, for obtaining high-pressure and intelligent power module temperature；
Frequency control unit, for based on the high-pressure and intelligent power module temperature control compressor frequency
Rate.
Further, the frequency control unit is used to determine the first range and the intelligence where the high-pressure
The second range where temperature of power module；
The frequency control unit is also used to determine compressor frequency according to first range and second range
Change rate；
The frequency control unit is also used to control the compressor frequency based on the change rate.
Further, the frequency control unit is also used to determine the variation of the compressor frequency as P < P1, T < T1
Rate is normal change rate；
The frequency control unit is also used to determine that the change rate of the compressor frequency is as P < P1, T1≤T < T2
First change rate；
The frequency control unit is also used to determine that the change rate of the compressor frequency is as P < P1, T2≤T < T3
Second change rate；
The frequency control unit is also used to determine that the change rate of the compressor frequency is 0 as P<P1, T>=T3；
Wherein, P is high-pressure, and P1 is presetting first pressure threshold value, and T is intelligent power module temperature, and T1 is pre-
First temperature threshold of setting, T2 are presetting second temperature threshold value, and T3 is presetting third temperature threshold.
The third aspect, the present invention provides a kind of air conditioner, the air conditioner includes:
Memory；
Controller；
Temperature sensor, the temperature sensor are electrically connected with the controller, for acquiring intelligent power module temperature,
And the intelligent power module temperature is transmitted to the controller；
Pressure sensor, the pressure sensor are electrically connected with the controller, for acquiring high-pressure, and will be described
High-pressure is transmitted to the controller；And
Compressor frequency control device, the compressor frequency control device be installed on the memory and including one or
Multiple software function modules executed by the controller, the compressor frequency control device include:
Parameter acquiring unit, for obtaining high-pressure and intelligent power module temperature；
Frequency control unit, for based on the high-pressure and intelligent power module temperature control compressor frequency
Rate.
Compared with the existing technology, compressor frequency control method of the present invention, device have the advantage that
By obtaining high-pressure and intelligent power module temperature, and based on the high-pressure and the intelligent function
Rate module temperature controls compressor frequency；Due to comprehensive high-pressure and intelligent power module temperature, make high-pressure and
The protection threshold value of intelligent power module temperature matches as far as possible, to can be avoided when controlling compressor frequency due to high pressure pressure
When any one in power or intelligent power module temperature reaches protection threshold value, frequency limit or frequency redution operation just are carried out to compressor,
Make high-pressure and intelligent power module temperature closer to critical value, to promote the high-temperature refrigeration amount of air conditioner.
The air conditioner and above-mentioned compressor control method for frequency, device compared with the existing technology possessed by advantage phase
Together, details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the functional block diagram of air conditioner 100 described in the embodiment of the present invention.
Fig. 2 is the flow chart of compressor frequency control method described in the embodiment of the present invention.
Fig. 3 is the flow chart of step S202 in Fig. 2.
Fig. 4 is the functional block diagram of compressor frequency control device described in the embodiment of the present invention.
Icon: 1- air conditioner；2- memory；3- controller；4- temperature sensor；5- pressure sensor；6- compressor；7-
Compressor frequency control device；8- parameter acquiring unit；9- frequency control unit.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
Referring to Fig. 1, being the functional block diagram of air conditioner 1 provided in an embodiment of the present invention.The air conditioner 1 includes: storage
Device 2, controller 3, temperature sensor 4, pressure sensor 5, compressor 6 and compressor frequency control device 7.Wherein, it controls
Device 3 is electrically connected with temperature sensor 4, pressure sensor 5 and compressor 6.The compressor frequency control device 7 includes extremely
Few one can be stored in the memory 2 in the form of software or firmware (firmware).
Wherein, memory 2 can be used for storing software program and unit, such as the compressor frequency control in the embodiment of the present invention
Program instruction/unit corresponding to device and method processed, the compressor frequency that controller 3 is stored in memory 2 by operation
Control device 7, the software program of method and unit, thereby executing various function application and data processing, such as present invention is real
The compressor frequency control method of example offer is provided.
Wherein, the memory 2 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Temperature sensor 4 is electrically connected with controller 3, for acquiring intelligent power module (Intelligent Power
Module, IPM) temperature, and intelligent power module temperature is transmitted to controller 3.
Normally, intelligent power module is set in the control box of air conditioner 1；Correspondingly, which is also provided with
The inside of box is controlled in air conditioner 1, to acquire the temperature of the intelligent power module.
Pressure sensor 5 is electrically connected with controller 3, is transmitted to controller for acquiring high-pressure, and by high-pressure
3。
Specifically, which is set to the pressure duct of air conditioner 1.
It is to be appreciated that structure shown in FIG. 1 is only to illustrate, air conditioner 11 may also include it is more than shown in Fig. 1 or
Less component, or with the configuration different from shown in Fig. 1.Each component shown in Fig. 1 can using hardware, software or its
Combination is realized.
First embodiment
The embodiment of the invention provides a kind of compressor frequency control methods, for promoting the high-temperature refrigeration amount of air conditioner 1.
Referring to Fig. 2, being the flow chart of compressor frequency control method provided in an embodiment of the present invention.The compressor frequency control method
Include:
Step S201: high-pressure and intelligent power module temperature are obtained.
It is to be appreciated that high-pressure and intelligent power module temperature respectively by controller 3 from temperature sensor 4 and
It is obtained at pressure sensor 5.
Step S202: compressor frequency is controlled based on high-pressure and intelligent power module temperature.
Referring to Fig. 3, being the specific flow chart of step S202.Step S202 includes:
Sub-step S2021: the second model where the first range and intelligent power module temperature where high-pressure is determined
It encloses.
It should be noted that in the present embodiment, having preset first pressure threshold value, second pressure threshold for high-pressure
Value and third pressure threshold, wherein first pressure threshold value, second pressure threshold value and third pressure threshold are sequentially increased；From
It and is that high-pressure has divided four sections.
To which the first range where high-pressure may are as follows: appointing in P<P1, P1≤P<P2, P2≤P<P3 or P>=P3
It anticipates one kind；Wherein, P is high-pressure, and P1 is presetting first pressure threshold value, and P2 is presetting second pressure threshold value, P3
For presetting third pressure threshold.
It should be noted that third pressure threshold is the critical pressure of high-pressure, once high-pressure is more than third pressure
The state of force threshold and long-time in third pressure threshold more than third pressure threshold, pressure duct may be damaged.And the
One pressure threshold and second pressure threshold value are the early warning value of high-pressure, when high-pressure is greater than first pressure threshold value,
Show that high-pressure has been closer to third pressure threshold at this time；And when high-pressure is greater than second pressure threshold value, show
High-pressure is very close to third pressure threshold at this time.
In the present embodiment, for intelligent power module temperature preset the first temperature threshold, second temperature threshold value with
And third temperature threshold, wherein the first temperature threshold, second temperature threshold value and third temperature threshold are sequentially increased；To be
Intelligent power module temperature has divided four sections.
To which the second range where intelligent power module temperature may are as follows: T<T1, T1≤T<T2, T2≤T<T3 or T>=
Any one in T3；Wherein, T is intelligent power module temperature, and T1 is the first presetting temperature threshold, and T2 is presetting
Second temperature threshold value, T3 are presetting third temperature threshold.
It should be noted that third temperature threshold is the critical-temperature of intelligent power module temperature, once intelligent power mould
Deblocking temperature is more than third temperature threshold and is in the state that third temperature threshold is more than third temperature threshold, intelligent power for a long time
Module may be damaged.And the first temperature threshold and second temperature threshold value are the early warning value of intelligent power module temperature, when
When intelligent power module temperature is greater than the first temperature threshold, show that intelligent power module temperature has been closer to third temperature at this time
Spend threshold value；And when intelligent power module temperature is greater than second temperature threshold value, show that intelligent power module temperature is non-at this time
Very close to third temperature threshold.
Sub-step S2022: the change rate of compressor frequency is determined according to the first range and the second range.
Specifically, the first: as P < P1, T < T1, i.e., when high-pressure be less than presetting first pressure threshold value and intelligence
When temperature of power module is less than the first presetting temperature threshold, determine that the change rate of compressor frequency is normal change rate.
Since high-pressure and intelligent power module temperature are not up to its corresponding early warning value, at this time not to compression
Unit frequency makes any adjustment, makes compressor frequency normal variation.
Second: as P < P1, T1≤T < T2, i.e., when high-pressure is less than presetting first pressure threshold value and intelligent power
When module temperature is greater than or equal to the first presetting temperature threshold and is less than presetting second temperature threshold value, compressor is determined
The change rate of frequency is the first change rate.
Relative to the first situation, second situation is on the not changed basis of the first range where high-pressure
On, the second range where intelligent power module becomes T1≤T < T2 from T < T1, this show intelligent power module temperature compared with
To approach critical-temperature, but still there is the rising space, therefore determines that the change rate of compressor frequency is the first change rate at this time, with
The rate of climb of compressor frequency is reduced, so that the height of air conditioner 1 can also be promoted while avoiding damage intelligent power module
Warm refrigerating capacity.
The third: is as P < P1, T2≤T < T3, i.e., when high-pressure is less than presetting first pressure threshold value and intelligent power
When module temperature is greater than or equal to presetting second temperature threshold value and is less than presetting third temperature threshold, compressor is determined
The change rate of frequency is the second change rate.
Relative to second situation, the third situation is on the not changed basis of the first range where high-pressure
On, the second range where intelligent power module becomes T2≤T < T3 from T1≤T < T2, this shows intelligent power module temperature phase
When for T1≤T < T2, more close to critical-temperature, but still there is the rising space, therefore determines the variation of compressor frequency at this time
Rate is the second change rate, and the second change rate is less than the first change rate so that compressor frequency continue to rise but the rate of climb more
To be slow, so that the high-temperature refrigeration amount of air conditioner 1 can also be promoted while avoiding damage intelligent power module.
4th kind: as P<P1, T>=T3, i.e., when high-pressure is greater than presetting first pressure threshold value and intelligent power mould
When deblocking temperature is greater than or equal to the first presetting temperature threshold, determine that the change rate of compressor frequency is 0.
Although high-pressure and not up to first pressure threshold value, indicate that high-pressure can also continue to increase, however T >=T3
Show intelligent power module temperature and more than critical-temperature, cannot rise again, if continuing to rise, will cause related device
Damage forbids compressor frequency to continue to rise it is thus determined that the change rate of compressor frequency is 0.
In a kind of preferred embodiment, as P<P1, T>=T3, the change rate of compressor frequency may be negative, i.e.,
Frequency redution operation is carried out to compressor 6.
5th kind: as P1≤P < P2, T < T1, i.e., when high-pressure is greater than or equal to presetting first pressure threshold value and small
When presetting second pressure threshold value, intelligent power module temperature are less than the first presetting temperature threshold, compressor is determined
The change rate of frequency is third change rate.
Wherein, T < T1 shows that intelligent power module temperature is also not up to the first temperature threshold, can continue normally to increase, but
P1≤P < P2 shows that high-pressure has been closer to critical-temperature, but still has the rising space, therefore determines compressor at this time
The change rate of frequency is third change rate, to reduce the rate of climb of compressor frequency, to promote the high-temperature refrigeration of air conditioner 1
Amount.
6th kind: as P1≤P < P2, T1≤T < T2, i.e., when high-pressure is greater than or equal to presetting first pressure threshold value
And be less than presetting second pressure threshold value, intelligent power module temperature is greater than or equal to presetting the first temperature threshold and small
When presetting second temperature threshold value, determine that the change rate of compressor frequency is the 4th change rate.
Relative to the 5th kind of situation, the 6th kind of situation is on the not changed basis of the first range where high-pressure
On, the second range where intelligent power module becomes T1≤T < T2 from T < T1, this show intelligent power module temperature compared with
To approach critical-temperature, but still there is the rising space, therefore determines that the change rate of compressor frequency is the 4th change rate at this time, and
4th change rate is less than third change rate, so that compressor frequency continues to rise but the rate of climb is more slow, avoids damage intelligence
The high-temperature refrigeration amount of air conditioner 1 can also be promoted while energy power module.
7th kind: as P1≤P < P2, T2≤T < T3, i.e., when high-pressure is greater than or equal to presetting first pressure threshold value
And be less than presetting second pressure threshold value, intelligent power module temperature is greater than or equal to presetting second temperature threshold value and small
When presetting third temperature threshold, determine that the change rate of compressor frequency is the 5th change rate.
Relative to the 5th kind of situation, the 6th kind of situation is on the not changed basis of the first range where high-pressure
On, the second range where intelligent power module becomes T2≤T < T3 from T1≤T < T2, this shows intelligent power module temperature phase
When for T1≤T < T2, more close to critical-temperature, but still there is the rising space, therefore determines the variation of compressor frequency at this time
Rate is the 5th change rate, and the 5th change rate is less than the 4th change rate so that compressor frequency continue to rise but the rate of climb more
To be slow, so that the high-temperature refrigeration amount of air conditioner 1 can also be promoted while avoiding damage intelligent power module.
8th kind: as P1≤P<P2, T>=T3, i.e., when high-pressure be greater than or equal to presetting first pressure threshold value and
When being greater than or equal to presetting third temperature threshold less than presetting second pressure threshold value, intelligent power module temperature, really
The change rate for determining compressor frequency is 0.
Relative to the 5th kind of situation, the 6th kind of situation is on the not changed basis of the first range where high-pressure
On, the second range where intelligent power module becomes T>=T3 from T2≤T<T3, however T>=T3 shows intelligent power module temperature
It spends and more than critical-temperature, cannot rise again, if continuing to rise, will cause the damage of related device, it is thus determined that compression
The change rate of unit frequency is 0, and compressor frequency is forbidden to continue to rise.
In a kind of preferred embodiment, as P1≤P<P2, T>=T3, the change rate of compressor frequency may be negative
Number carries out frequency redution operation to compressor 6.
9th kind: as P2≤P < P3, T < T1, i.e., when high-pressure is greater than or equal to presetting second threshold and intelligent function
When rate module temperature is less than the first presetting temperature threshold, determine that the change rate of compressor frequency is the 6th change rate.
Relative to the 5th kind of situation, the 9th kind of situation does not change in the second range where intelligent power module temperature
On the basis of, high-pressure becomes P2≤P < P3 from P1≤P < P2, this shows that high-pressure has been closer to critical pressure, but
Still there is the rising space, therefore determine that the change rate of compressor frequency is the 6th change rate at this time, and the 6th change rate is less than the
Three change rates, so that compressor frequency continues to rise but the rate of climb is more slow, thus avoiding damage intelligent power module
While can also promote the high-temperature refrigeration amount of air conditioner 1.
Tenth kind: as P2≤P < P3, T1≤T < T2, i.e., when high-pressure is greater than or equal to presetting second threshold, intelligence
When energy temperature of power module is greater than or equal to the first presetting temperature threshold and is less than presetting second temperature threshold value, determine
The change rate of the compressor frequency is the 7th change rate.
Relative to the 9th kind of situation, the tenth kind of situation is on the not changed basis of the first range where high-pressure
On, the second range where intelligent power module becomes T1≤T < T2 from T < T1, this show intelligent power module temperature compared with
To approach critical-temperature, but still there is the rising space, therefore determines that the change rate of compressor frequency is the 4th change rate at this time, and
4th change rate is less than third change rate, so that compressor frequency continues to rise but the rate of climb is more slow, thus avoiding
The high-temperature refrigeration amount of air conditioner 1 can also be promoted while damaging intelligent power module.
Tenth is a kind of: as P2≤P < P3, T2≤T < T3, i.e., when high-pressure be greater than or equal to presetting second threshold,
When intelligent power module temperature is greater than or equal to presetting second temperature threshold value and is less than presetting third temperature threshold, really
The change rate of the fixed compressor frequency is 0.
Due to the very close respective critical value of high-pressure and intelligent power module, if letting alone compressor again at this time
Frequency continues to rise, and can be very easy to that pressure duct, intelligent power module or compressor 6 is caused to damage, therefore determine pressure at this time
The change rate of contracting unit frequency is 0, and compressor frequency is forbidden to continue to rise.
In a kind of preferred embodiment, as P2≤P < P3, T2≤T < T3, the change rate of compressor frequency may be
Negative carries out frequency redution operation to compressor 6.
12nd kind: as P >=P3 or T >=T3, i.e., when high-pressure be greater than or equal to presetting third pressure threshold or
When intelligent power module temperature is more than or equal to presetting third temperature threshold, determine that the change rate of the compressor frequency is 0.
It is more than or equal to when high-pressure is greater than or equal to presetting third pressure threshold or intelligent power module temperature
When presetting third temperature threshold, to avoid pressure duct, intelligent power module or compressor 6 from damaging, compressor frequency is determined
The change rate of rate is 0, and compressor frequency is forbidden to continue to rise.
Similarly, in a kind of preferred embodiment: as P >=P3 or T >=T3, the change rate of compressor frequency can also
Think negative, i.e., frequency redution operation is carried out to compressor 6.
In summary 12 kinds of situations are it is found that one timing of the first range where the high-pressure, intelligent power module temperature
Degree is higher, and the change rate of compressor frequency is lower；When one timing of the second range where intelligent power module temperature, high-pressure
Higher, the change rate of compressor frequency is lower.
It is to be appreciated that respectively high-pressure and intelligent power module temperature set three threshold values, and determine high pressure
Range where pressure and intelligent power module temperature are specific, further determines whether to need to compression according to the range determined
Machine 6 carries out frequency limit or frequency redution operation, so that the critical point of close word of high-pressure and intelligent power module temperature,
It utmostly plays compressor 6 to act on, while promoting refrigerating capacity, guarantees that high temperature conduit and intelligent power module are not damaged
It is bad.
Sub-step S2023: compressor frequency is controlled based on change rate.
After determining the change rate that compressor frequency is put, it is directly based upon the variation of change rate control control compressor frequency i.e.
It can.
Second embodiment
Referring to Fig. 4, Fig. 4 is a kind of function mould for compressor frequency control device 7 that present pre-ferred embodiments provide
Block figure.It should be noted that the technology of compressor frequency control device 7 provided by the present embodiment, basic principle and generation
Effect is identical with above-described embodiment, and to briefly describe, the present embodiment part does not refer to place, can refer to phase in the above embodiments
Answer content.The compressor frequency control device 7 includes parameter acquiring unit 8 and frequency control unit 9.
Wherein, parameter acquiring unit 8 is for obtaining high-pressure and intelligent power module temperature.
It is to be appreciated that the parameter acquiring unit 8 can be used for executing step S201 in a kind of preferred embodiment.
Frequency control unit 9 is used to control compressor frequency based on high-pressure and intelligent power module temperature.
Specifically, frequency control unit 9 is used to determine the first range and intelligent power module temperature where high-pressure
Second range at place, and the first range of foundation and the second range determine the change rate of compressor frequency, are then based on change rate
Control compressor frequency.
Further, frequency control unit 9 is also used to determine that the change rate of compressor frequency is positive as P < P1, T < T1
Normal change rate；As P < P1, T1≤T < T2, determine that the change rate of compressor frequency is the first change rate；As P < P1, T2≤T < T3
When, determine that the change rate of compressor frequency is the second change rate；As P<P1, T>=T3, determine that the change rate of compressor frequency is
0。
Frequency control unit 9 is also used to as P1≤P < P2, T < T1, determines the change rate of compressor frequency for third variation
Rate；As P1≤P < P2, T1≤T < T2, determine that the change rate of compressor frequency is the 4th change rate；As P1≤P < P2, T2≤T <
When T3, determine that the change rate of compressor frequency is the 5th change rate；As P1≤P<P2, T>=T3, the change of compressor frequency is determined
Rate is 0.
Frequency control unit 9 is also used to determine that the change rate of compressor frequency is the 6th variation as P2≤P < P3, T < T1
Rate；As P2≤P < P3, T1≤T < T2, determine that the change rate of compressor frequency is the 7th change rate；As P2≤P < P3, T2≤T <
When T3, determine that the change rate of compressor frequency is 0.
Frequency control unit 9 is also used to as P >=P3 or T >=T3, determines that the change rate of compressor frequency is 0.
Wherein, P is high-pressure, and P1 is presetting first pressure threshold value, and P2 is presetting second pressure threshold value, P3
For presetting third pressure threshold, T is intelligent power module temperature, and T1 is the first presetting temperature threshold, and T2 is default
Fixed second temperature threshold value, T3 are presetting third temperature threshold.
It is to be appreciated that the frequency control unit 9 can be used for executing step S202, son in a kind of preferred embodiment
Step S2021 and sub-step S2022.
In conclusion compressor frequency control method provided in an embodiment of the present invention, device and air conditioner, high by obtaining
Pressure pressure and intelligent power module temperature, and based on the high-pressure and intelligent power module temperature control compression
Unit frequency；Due to comprehensive high-pressure and intelligent power module temperature, make high-pressure and intelligent power module temperature
Protection threshold value matches as far as possible, to can be avoided when controlling compressor frequency due to high-pressure or intelligent power module temperature
When any one in degree reaches protection threshold value, frequency limit or frequency redution operation just are carried out to compressor, make high-pressure and intelligence
Temperature of power module is closer to critical value, to promote the high-temperature refrigeration amount of air conditioner.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part of the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that function marked in the box can also be to be different from some implementations as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes
It can execute in the opposite order, this depends on the function involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use the dedicated base for executing defined function or movement
It realizes, or can realize using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
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| CN109236622B (en) | 2020-03-13 |
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Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Country or region after: China Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. Country or region before: China Patentee before: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. |
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