CN109297134A - A kind of overload protection method of air-conditioning, device, storage medium and air-conditioning - Google Patents
A kind of overload protection method of air-conditioning, device, storage medium and air-conditioning Download PDFInfo
- Publication number
- CN109297134A CN109297134A CN201810995089.8A CN201810995089A CN109297134A CN 109297134 A CN109297134 A CN 109297134A CN 201810995089 A CN201810995089 A CN 201810995089A CN 109297134 A CN109297134 A CN 109297134A
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- Prior art keywords
- conditioning
- air
- current
- temperature
- overload protection
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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
- F24F11/32—Responding to malfunctions or emergencies
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
Abstract
The invention discloses a kind of overload protection method of air-conditioning, device, storage medium and air-conditionings, this method comprises: obtaining the current flow of the complete machine of the air-conditioning and the current exhaust gas temperature of compressor；Determine whether the current flow is greater than or equal to setting electric current upper limit value or whether the current exhaust gas temperature is greater than or equal to set temperature upper limit value；If the current flow is less than the setting electric current upper limit value and the current exhaust gas temperature is less than the set temperature upper limit value, the overload protection of the air-conditioning is realized according to the corresponding benchmark delivery temperature of the current flow.The solution of the present invention, can solve that fixed frequency air conditioner compressor in the prior art requires to install built-in overload protective device or external overload protective device carries out overload protection and there is a problem of controlling precision low, achievees the effect that be promoted and controls precision.
Description
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of overload protection method of air-conditioning, device, storage medium
And air-conditioning more particularly to a kind of air-conditioning overload protection control method, device corresponding with this method, the sky with the device
Adjust, be stored with the computer readable storage medium of the corresponding instruction of this method and be able to carry out the corresponding instruction of this method
Air-conditioning.
Background technique
Fixed frequency air conditioner compressor currently on the market require to install built-in overload protective device (such as: be mounted on compressor
The machine overload protection device of external topside) or external overload protective device (such as: compressor inside top is mounted on close to glass
Body position), principle is the collective effect by electric current and temperature, avoids that electric current is excessive or temperature is excessively high and bring is asked safely
Topic belongs to mechanical control mode, and control precision is low, and reliability and safety also do not ensure, additionally mounted structure
Complexity, hardware cost are also high.
Summary of the invention
It is an object of the present invention in view of the foregoing drawbacks, provide overload protection method, the device, storage of a kind of air-conditioning
Medium and air-conditioning require to install built-in overload protective device or external overload to solve fixed frequency air conditioner compressor in the prior art
Protector, which carries out overload protection, has that control precision is low, achievees the effect that promote control precision.
The present invention provides a kind of overload protection method of air-conditioning, comprising: obtain the complete machine of the air-conditioning current flow,
And the current exhaust gas temperature of compressor；Determine whether the current flow is greater than or equal to setting electric current upper limit value or described
Whether current exhaust gas temperature is greater than or equal to set temperature upper limit value；If the current flow is greater than or equal to the setting electric current
Upper limit value or the current exhaust gas temperature are greater than or equal to the set temperature upper limit value, then control the air-conditioning and enter setting
Overload protection mode, to realize to the overload protection of the air-conditioning；If the current flow is less than the setting electric current
Upper limit value and the current exhaust gas temperature are less than the set temperature upper limit value, then according to the corresponding benchmark of the current flow
Delivery temperature realizes the overload protection of the air-conditioning.
Optionally, the current flow of the complete machine of the air-conditioning and the current exhaust gas temperature of compressor are obtained, comprising: obtain
The current flow of the complete machine of the air-conditioning detected by current detection means is taken, and obtains and is detected by temperature-detecting device
Current exhaust gas temperature at the exhaust pipe of the compressor of the air-conditioning arrived.
Optionally, the overload protection of the air-conditioning is realized according to the corresponding benchmark delivery temperature of the current flow, is wrapped
It includes: determining benchmark delivery temperature corresponding with the current flow；The benchmark delivery temperature is less than the set temperature upper limit
Value；Determine whether the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature；If the current exhaust gas temperature is greater than
Or be equal to the benchmark delivery temperature, then the overload protection mode that the air-conditioning enters setting is controlled, to realize to the sky
The overload protection of tune.
Optionally it is determined that benchmark delivery temperature corresponding with the current flow, comprising: f (χ)=A/ (χ-B)+C；Its
In, f (χ) is benchmark delivery temperature；χ is the current flow；A, B, C are design factor, and the design factor with it is described
The specified heat exchange amount and/or type of air-conditioning match.
Optionally, the overload protection of the air-conditioning is realized according to the corresponding benchmark delivery temperature of the current flow, also
If including: that the current exhaust gas temperature is less than the benchmark delivery temperature, controls the air-conditioning and operate normally, and return to acquisition
The step of current exhaust gas temperature of the current flow of the complete machine of the air-conditioning and compressor, to continue to determine that the air-conditioning is
It is no to need to enter overload protection.
Optionally, the overload protection mode, comprising: control the compressor shutdown.
Match with the above method, another aspect of the present invention provides a kind of overload protection device of air-conditioning, comprising: obtain
Unit, for obtaining the current flow of the complete machine of the air-conditioning and the current exhaust gas temperature of compressor；Control unit is used for
Determine whether the current flow is greater than or equal to setting electric current upper limit value or whether the current exhaust gas temperature is greater than or equal to
Set temperature upper limit value；Described control unit, if be also used to the current flow more than or equal to the setting electric current upper limit value,
Or the current exhaust gas temperature is greater than or equal to the set temperature upper limit value, then controls the overload that the air-conditioning enters setting
Protected mode, to realize the overload protection to the air-conditioning；Described control unit, if being also used to the current flow less than institute
It states setting electric current upper limit value and the current exhaust gas temperature is less than the set temperature upper limit value, then according to the current flow
Corresponding benchmark delivery temperature realizes the overload protection of the air-conditioning.
Optionally, the acquiring unit obtains the current flow of the complete machine of the air-conditioning and the current exhaust of compressor
Temperature, comprising: obtain the current flow of the complete machine of the air-conditioning detected by current detection means, and obtain and examined by temperature
Survey the current exhaust gas temperature at the exhaust pipe of the compressor for the air-conditioning that device detects.
Optionally, described control unit realizes the mistake of the air-conditioning according to the corresponding benchmark delivery temperature of the current flow
Load protection, comprising: determine benchmark delivery temperature corresponding with the current flow；The benchmark delivery temperature is less than described set
Determine temperature upper limit；Determine whether the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature；If described when front row
Temperature degree is greater than or equal to the benchmark delivery temperature, then the overload protection mode that the air-conditioning enters setting is controlled, with reality
Now to the overload protection of the air-conditioning.
Optionally it is determined that benchmark delivery temperature corresponding with the current flow, comprising: f (χ)=A/ (χ-B)+C；Its
In, f (χ) is benchmark delivery temperature；χ is the current flow；A, B, C are design factor, and the design factor with it is described
The specified heat exchange amount and/or type of air-conditioning match.
Optionally, described control unit realizes the mistake of the air-conditioning according to the corresponding benchmark delivery temperature of the current flow
Load protection, further includes: if the current exhaust gas temperature is less than the benchmark delivery temperature, controls the air-conditioning and normally transport
Row, and return the complete machine for obtaining the air-conditioning current flow and compressor current exhaust gas temperature the step of, with continue really
Whether the fixed air-conditioning needs to enter overload protection.
Optionally, the overload protection mode, comprising: control the compressor shutdown.
Match with above-mentioned apparatus, further aspect of the present invention provides a kind of air-conditioning, comprising: above-described air-conditioning it is excessively negative
Lotus protective device.
Match with the above method, further aspect of the present invention provides a kind of storage medium, comprising: deposited in the storage medium
Contain a plurality of instruction；The a plurality of instruction, for being loaded by processor and being executed the overload protection side of above-described air-conditioning
Method.
Match with the above method, further aspect of the present invention provides a kind of air-conditioning, comprising: processor, it is a plurality of for executing
Instruction；Memory, for storing a plurality of instruction；Wherein, a plurality of instruction, for being stored by the memory, and by described
Processor loads and executes the overload protection method of above-described air-conditioning.
The solution of the present invention, by can accurately realize that overload is protected using the functional relation between electric current and delivery temperature
Shield, and high reliablity, safety are good.
Further, the solution of the present invention realizes machine overload protection function by electronically controlled mode, and electric signal is whole
Electromechanics stream and delivery temperature, the accuracy of overload protection is good, high reliablity.
Further, the solution of the present invention, by realizing overload protection using the functional relation between electric current and delivery temperature,
It can be adapted for the overload protection of the type of different cooling capacity, it is applied widely.
Further, the solution of the present invention, by realizing overload protection using the functional relation between electric current and delivery temperature,
Structure is simple, and at low cost.
Further, the solution of the present invention, by realizing overload protection using the functional relation between electric current and delivery temperature,
Protection zone is accurate, protection reliability and the available guarantee of safety.
The solution of the present invention as a result, by can accurately realize using the functional relation between electric current and delivery temperature
Protection is carried, fixed frequency air conditioner compressor in the prior art is solved and requires that built-in overload protective device or external overload protective device are installed
Carry out overload protection there is a problem of controlling precision it is low, thus, overcome and control that precision is low, reliability is low and safe in the prior art
Property difference defect, realize the beneficial effect that control precision is high, high reliablity and safety are good.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the flow diagram of an embodiment of the overload protection method of air-conditioning of the invention；
Fig. 2 is the mistake for realizing the air-conditioning in method of the invention according to the corresponding benchmark delivery temperature of the current flow
The flow diagram of one embodiment of load protection；
Fig. 3 is the structural schematic diagram of an embodiment of the overload protection device of air-conditioning of the invention；
Fig. 4 is the control flow schematic diagram of the overload protection of an embodiment of air-conditioning of the invention；
Fig. 5 is the curve synoptic diagram of the guard interval of the overload protection of an embodiment of air-conditioning of the invention.
In conjunction with attached drawing, appended drawing reference is as follows in the embodiment of the present invention:
The first guard interval of 10-；The second guard interval of 20-；30- third guard interval；102- acquiring unit；104- control
Unit.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill 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.
According to an embodiment of the invention, a kind of overload protection method of air-conditioning is provided, side of the invention as shown in Figure 1
The flow diagram of one embodiment of method.The overload protection method of the air-conditioning may include: step S110 to step S140.
At step S110, the current flow of the complete machine of the air-conditioning and the current exhaust gas temperature of compressor are obtained.
Optionally, the current flow of the complete machine of the air-conditioning and the current exhaust temperature of compressor are obtained in step S110
Degree may include: to obtain the current flow of the complete machine of the air-conditioning detected by current detection means, and obtain by temperature
Current exhaust gas temperature at the exhaust pipe of the compressor for the air-conditioning that detection device detects.
Such as: have current detection means and temperature-detecting device and control panel.
Current flow is obtained by current detection means as a result, and current exhaust gas temperature is obtained by temperature-detecting device,
Acquisition modes are easy, and the accuracy and reliability for obtaining result can be guaranteed.
At step S120, determine the current flow whether be greater than or equal to setting electric current upper limit value (such as electric current b) or
Whether the current exhaust gas temperature is greater than or equal to set temperature upper limit value (such as temperature c).
At step S130, if the current flow be greater than or equal to the setting electric current upper limit value or it is described when front row
Temperature degree is greater than or equal to the set temperature upper limit value, then controls the overload protection mode that the air-conditioning enters setting, with
Realize the overload protection to the air-conditioning.By being greater than or equal to setting electric current upper limit value or current exhaust in current flow
In the case that temperature is greater than or equal to set temperature upper limit value, execute the overload protection mode of setting, the timeliness of protection and
The available guarantee of reliability, improves the safety of operation of air conditioner, improves the usage experience of user.
Such as: setting electric current upper limit value b and delivery temperature upper limit value c, as electric current I >=b or T >=c, into overload
Protection, can be to avoid machine because delivery temperature and current anomaly are without protecting.
Wherein, the overload protection mode may include: the control compressor shutdown.Stopped by controlling compressor
The mode of machine carries out overload protection, and protection reliability is high, safety is good.
At step S140, if the current flow is less than the setting electric current upper limit value and the current exhaust gas temperature
Less than the set temperature upper limit value, then the excessively negative of the air-conditioning is realized according to the corresponding benchmark delivery temperature of the current flow
Lotus protection.
Such as: using the functional relation between electric current and delivery temperature, it can accurately realize the function of overload protective device, and
It is more safe and reliable than overload protective device；Machine overload protection function can be realized by electronically controlled mode, electric signal is complete machine
Electric current and delivery temperature simulate overload protection curve by electric current, Tail Pipe Temperature.
As a result, by the current flow and current exhaust gas temperature of detection air-conditioning, and electric current is less than setting electric current in this prior
It is corresponding with the current flow according to determination in the case that upper limit value and current exhaust gas temperature are less than set temperature upper limit value
Benchmark delivery temperature carries out overload protection to air-conditioning, and protection precision is high, and the reliability protected and safety can obtain
Guarantee.
It is alternatively possible to as shown in connection with fig. 2 according to the corresponding base platoon's temperature of the current flow in method of the invention
Degree realizes an embodiment flow diagram of the overload protection of the air-conditioning, further illustrates and works as according in step S140
The corresponding benchmark delivery temperature of preceding electric current realizes the detailed process of the overload protection of the air-conditioning, may include: step S210
To step S230.
Step S210 determines benchmark delivery temperature corresponding with the current flow；The benchmark delivery temperature is less than institute
State set temperature upper limit value.
More optionally it is determined that benchmark delivery temperature corresponding with the current flow, may include: f (χ)=A/ (χ-B)+
C。
Wherein, f (χ) is benchmark delivery temperature, and χ is the current flow, and A, B, C are design factor, and the calculating
Coefficient is matched with the specified heat exchange amount and/or type of the air-conditioning.
Such as: one function f (χ)=A/ (χ-B)+C (χ > B, A > can be set according to air-conditioning overload actual conditions
0, B > 0, C > 0).Wherein, f (χ) is Tail Pipe Temperature T；χ is electric current I；A, B, C are design factor, can be constant；It can be with
Tri- constants of A, B, C can be determined according to air-conditioning Overload, so that it is determined that function.
Such as: function f (χ)=A/ (χ-B)+C can realize the tune of overload parameters by adjusting tri- constants of A, B, C
It is whole, substitute different overload protective devices；The adjustment of overload parameters can be realized by adjusting tri- constants of A, B, C, substitution is not
Same overload protective device, i.e. function f (χ)=f (χ)=A/ (χ-B)+C can be adapted for the type of different cooling capacity.
As a result, by the functional relation between setting electric current and delivery temperature, on the one hand can guarantee to base platoon's temperature
Spend the accuracy calculated, high reliablity；On the other hand it can be adapted for a variety of air-conditionings, it is versatile.
Step S220, determines whether the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature.
Step S230 controls the air-conditioning if the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature
Into the overload protection mode of setting, to realize the overload protection to the air-conditioning.
Such as: as current value I=χ, delivery temperature T >=f (χ), into overload protection.
It is current according to this when being equal to a setting electric current value within the scope of setting electric current by electric current in this prior as a result,
In the case that electric current calculates corresponding benchmark delivery temperature, and delivery temperature is greater than or equal to the benchmark delivery temperature in this prior
Overload protection control is carried out, the accuracy of protection is good, high reliablity.
Still optionally further, the air-conditioning is realized according to the corresponding benchmark delivery temperature of the current flow in step S140
Overload protection, if can also include: the current exhaust gas temperature be less than the benchmark delivery temperature, control the air-conditioning
Operate normally, and return the complete machine for obtaining the air-conditioning current flow and compressor current exhaust gas temperature the step of, with
Continue to determine whether the air-conditioning needs to enter overload protection.
Such as: if the present current value is less than setting electric current upper limit value, current exhaust gas temperature is less than the set temperature upper limit
It is worth and current exhaust gas temperature is less than the corresponding benchmark delivery temperature of the present current value, then controls the air-conditioning and operate normally,
And return the complete machine for obtaining the air-conditioning current flow and compressor current exhaust gas temperature the step of, to continue to institute
Air-conditioning is stated to be made to determine whether to enter overload protection.
Electric current is not that a setting electric current value within the scope of setting electric current or current exhaust gas temperature are small in this prior as a result,
In the case where benchmark delivery temperature, control air-conditioning is operated normally, and be ensure that the reliability and safety of operation of air conditioner, is improved
User experience.
Through a large amount of verification experimental verification, using the technical solution of the present embodiment, by using between electric current and delivery temperature
Functional relation, can accurately realize overload protection, and high reliablity, safety are good.
According to an embodiment of the invention, additionally providing a kind of the excessively negative of air-conditioning of the overload protection method corresponding to air-conditioning
Lotus protective device.The structural schematic diagram of one embodiment of the device of the invention shown in Figure 3.The overload protection of the air-conditioning fills
Set may include: acquiring unit 102 and control unit 104.
In an optional example, acquiring unit 102, can be used for obtaining the complete machine of the air-conditioning current flow, with
And the current exhaust gas temperature of compressor.The concrete function of the acquiring unit 102 and processing are referring to step S110.
Optionally, the acquiring unit 102 obtain the complete machine of the air-conditioning current flow and compressor when front row
Temperature degree may include: the acquiring unit 102, specifically can be also used for obtaining the institute detected by current detection means
The current flow of the complete machine of air-conditioning is stated, and obtains the exhaust pipe of the compressor of the air-conditioning detected by temperature-detecting device
The current exhaust gas temperature at place.
Such as: have current detection means and temperature-detecting device and control panel.
Current flow is obtained by current detection means as a result, and current exhaust gas temperature is obtained by temperature-detecting device,
Acquisition modes are easy, and the accuracy and reliability for obtaining result can be guaranteed.
In an optional example, whether control unit 104 is determined for the current flow and is greater than or equal to set
(whether such as electric current b) or the current exhaust gas temperature are greater than or equal to set temperature upper limit value (such as temperature to constant current upper limit value
c).The concrete function of the control unit 104 and processing are referring to step S120.
In an optional example, described control unit 104, if can be also used for the current flow more than or equal to institute
It states setting electric current upper limit value or the current exhaust gas temperature is greater than or equal to the set temperature upper limit value, then control the sky
The overload protection mode into setting is transferred in, to realize the overload protection to the air-conditioning.The specific function of the control unit 104
It can and handle referring to step S130.By big more than or equal to setting electric current upper limit value or current exhaust gas temperature in current flow
In or be equal to set temperature upper limit value in the case where, execute the overload protection mode of setting, the timeliness and reliability of protection
Available guarantee, improves the safety of operation of air conditioner, improves the usage experience of user.
Such as: setting electric current upper limit value b and delivery temperature upper limit value c, as electric current I >=b or T >=c, into overload
Protection, can be to avoid machine because delivery temperature and current anomaly are without protecting.
Wherein, the overload protection mode may include: the control compressor shutdown.Stopped by controlling compressor
The mode of machine carries out overload protection, and protection reliability is high, safety is good.
In an optional example, described control unit 104, if can be also used for the current flow less than the setting
Current upper limit value and the current exhaust gas temperature are less than the set temperature upper limit value, then corresponding according to the current flow
Benchmark delivery temperature realizes the overload protection of the air-conditioning.The concrete function of the control unit 104 and processing see also step
S140。
Such as: using the functional relation between electric current and delivery temperature, it can accurately realize the function of overload protective device, and
It is more safe and reliable than overload protective device；Machine overload protection function can be realized by electronically controlled mode, electric signal is complete machine
Electric current and delivery temperature simulate overload protection curve by electric current, Tail Pipe Temperature.
As a result, by the current flow and current exhaust gas temperature of detection air-conditioning, and electric current is less than setting electric current in this prior
It is corresponding with the current flow according to determination in the case that upper limit value and current exhaust gas temperature are less than set temperature upper limit value
Benchmark delivery temperature carries out overload protection to air-conditioning, and protection precision is high, and the reliability protected and safety can obtain
Guarantee.
Optionally, described control unit 104 realizes the air-conditioning according to the corresponding benchmark delivery temperature of the current flow
Overload protection, may include:
Described control unit 104 can be also used for determining benchmark delivery temperature corresponding with the current flow；The base
Quasi- delivery temperature is less than the set temperature upper limit value.The concrete function of the control unit 104 and processing see also step S210.
More optionally it is determined that benchmark delivery temperature corresponding with the current flow, may include: f (χ)=A/ (χ-B)+
C。
Wherein, f (χ) is benchmark delivery temperature, and χ is the current flow, and A, B, C are design factor, and the calculating
Coefficient is matched with the specified heat exchange amount and/or type of the air-conditioning.
Such as: one function f (χ)=A/ (χ-B)+C (χ > B, A > can be set according to air-conditioning overload actual conditions
0, B > 0, C > 0).Wherein, f (χ) is Tail Pipe Temperature T；χ is electric current I；A, B, C are design factor, can be constant；It can be with
Tri- constants of A, B, C can be determined according to air-conditioning Overload, so that it is determined that function.
Such as: function f (χ)=A/ (χ-B)+C can realize the tune of overload parameters by adjusting tri- constants of A, B, C
It is whole, substitute different overload protective devices；The adjustment of overload parameters can be realized by adjusting tri- constants of A, B, C, substitution is not
Same overload protective device, i.e. function f (χ)=f (χ)=A/ (χ-B)+C can be adapted for the type of different cooling capacity.
As a result, by the functional relation between setting electric current and delivery temperature, on the one hand can guarantee to base platoon's temperature
Spend the accuracy calculated, high reliablity；On the other hand it can be adapted for a variety of air-conditionings, it is versatile.
Described control unit 104 can be also used for determining whether the current exhaust gas temperature is greater than or equal to the benchmark
Delivery temperature.The concrete function of the control unit 104 and processing see also step S220.
Described control unit 104, if can be also used for the current exhaust gas temperature more than or equal to base platoon's temperature
Degree, then control the overload protection mode that the air-conditioning enters setting, to realize the overload protection to the air-conditioning.The control
The concrete function of unit 104 and processing see also step S230.
Such as: as current value I=χ, delivery temperature T >=f (χ), into overload protection.
It is current according to this when being equal to a setting electric current value within the scope of setting electric current by electric current in this prior as a result,
In the case that electric current calculates corresponding benchmark delivery temperature, and delivery temperature is greater than or equal to the benchmark delivery temperature in this prior
Overload protection control is carried out, the accuracy of protection is good, high reliablity.
Still optionally further, described control unit 104 realizes institute according to the corresponding benchmark delivery temperature of the current flow
The overload protection of air-conditioning is stated, can also include: described control unit 104, if it is small to can be also used for the current exhaust gas temperature
In the benchmark delivery temperature, then control the air-conditioning and operate normally, and return the complete machine for obtaining the air-conditioning current flow,
And compressor current exhaust gas temperature the step of, with continue to determine the air-conditioning whether need enter overload protection.
Electric current is not that a setting electric current value within the scope of setting electric current or current exhaust gas temperature are small in this prior as a result,
In the case where benchmark delivery temperature, control air-conditioning is operated normally, and be ensure that the reliability and safety of operation of air conditioner, is improved
User experience.
The processing and function realized by the device of the present embodiment essentially correspond to earlier figures 1 to method shown in Fig. 2
Embodiment, principle and example, therefore not detailed place in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment
Bright, this will not be repeated here.
Through a large amount of verification experimental verification, using technical solution of the present invention, mechanical overload is realized by electronically controlled mode
Defencive function, electric signal are complete machine electric current and delivery temperature, and the accuracy of overload protection is good, high reliablity.
According to an embodiment of the invention, additionally providing a kind of air-conditioning of the overload protection device corresponding to air-conditioning.The sky
Tune may include: the overload protection device of above-described air-conditioning.
It, can be by electronically controlling compressor in the patent document that patent (application) number is 201210442944.5
Start-stop, and the start-stop of compressor is controlled merely by a current value and an outlet air temperature, it can not achieve accurate
Control.
In an optional embodiment, the solution of the present invention can using the functional relation between electric current and delivery temperature
Accurately to realize the function of overload protective device, and it is more safe and reliable than overload protective device.Such as: be than patent (application) number
201210442944.5 patent it is more accurate.
Specifically, the solution of the present invention can realize machine overload protection function, electric signal by electronically controlled mode
For complete machine electric current and delivery temperature, overload protection curve is simulated by electric current, Tail Pipe Temperature.Wherein, the control mode is realized
Must have current detection means and temperature-detecting device and control panel.
In an optional example, in the solution of the present invention, example shown in Figure 4 can be according to air-conditioning overload
Function f (χ)=A/ (χ-B)+C (χ > B, A > 0, B > 0, C > 0) is arranged in actual conditions.Wherein, f (χ) is exhaust tube temperature
Spend T；χ is electric current I；A, B, C are design factor, can be constant.
Such as: one function f (χ)=A/ (χ-B)+C (χ > B, A > 0, B > 0, C > 0) of setting, f (χ) they are exhaust tube temperature
T is spent, χ is electric current I.Tri- constants of A, B, C can be determined according to air-conditioning Overload, so that it is determined that function.
Optionally, function f (χ)=A/ (χ-B)+C can realize overload parameters by adjusting A, B, C tri- constants
Adjustment, substitutes different overload protective devices.
Such as: function f (χ)=f (χ)=A/ (χ-B)+C can realize overload parameters by adjusting tri- constants of A, B, C
Adjustment, substitute different overload protective devices.That is function f (χ)=f (χ)=A/ (χ-B)+C can be adapted for the machine of different cooling capacity
Type.
Optionally, as current value I=χ, delivery temperature T >=f (χ), into overload protection.
Optionally, setting electric current upper limit value b and delivery temperature upper limit value c, as electric current I >=b or T >=c, entrance is excessively negative
Lotus protection.
Such as: setting electric current upper limit value b and delivery temperature upper limit value c, as electric current I >=b or T >=c, into overload
Protection, can be to avoid machine because delivery temperature and current anomaly are without protecting.
In an alternative specific example, the most favorable characteristics of the present invention alternative 201210442944.5 are, than special
The control mode of benefit 201210442944.5 is more accurate reliable.
Such as: example shown in Figure 5,201210442944.5 guard interval can for the first guard interval 10,
The protection zone that second guard interval 20 and third guard interval 30 are constituted, and guard interval of the invention can be as accurate as
The protection zone that one guard interval 10 is constituted.
The processing and function realized by the air-conditioning of the present embodiment essentially correspond to the implementation of aforementioned device shown in Fig. 3
Example, principle and example, therefore not detailed place in the description of the present embodiment, may refer to the related description in previous embodiment,
This is not repeated them here.
Through a large amount of verification experimental verification, using technical solution of the present invention, by utilizing the letter between electric current and delivery temperature
Number relational implementation overload protection, can be adapted for the overload protection of the type of different cooling capacity, applied widely.
According to an embodiment of the invention, additionally providing a kind of storage medium of the overload protection method corresponding to air-conditioning.
The storage medium may include: that a plurality of instruction is stored in the storage medium；The a plurality of instruction, for being added by processor
Carry and execute the overload protection method of above-described air-conditioning.
The processing and function realized by the storage medium of the present embodiment essentially correspond to earlier figures 1 to shown in Fig. 2
Embodiment, principle and the example of method, therefore not detailed place in the description of the present embodiment, may refer to the phase in previous embodiment
It speaks on somebody's behalf bright, this will not be repeated here.
Through a large amount of verification experimental verification, using technical solution of the present invention, by utilizing the letter between electric current and delivery temperature
Number relational implementation overload protection, structure is simple, and at low cost.
According to an embodiment of the invention, additionally providing a kind of air-conditioning of the overload protection method corresponding to air-conditioning.The sky
It adjusts, may include: processor, for executing a plurality of instruction；Memory, for storing a plurality of instruction；Wherein, a plurality of finger
It enables, for being stored by the memory, and is loaded by the processor and executed the overload protection side of above-described air-conditioning
Method.
The processing and function realized by the air-conditioning of the present embodiment essentially correspond to earlier figures 1 to method shown in Fig. 2
Embodiment, principle and example, therefore not detailed place in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment
Bright, this will not be repeated here.
Through a large amount of verification experimental verification, using technical solution of the present invention, by utilizing the letter between electric current and delivery temperature
Number relational implementation overload protection, protection zone is accurate, protection reliability and the available guarantee of safety.
To sum up, it will be readily appreciated by those skilled in the art that under the premise of not conflicting, above-mentioned each advantageous manner can be certainly
It combined, be superimposed by ground.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (15)
1. a kind of overload protection method of air-conditioning characterized by comprising
Obtain the current flow of the complete machine of the air-conditioning and the current exhaust gas temperature of compressor；
Determine the current flow whether be greater than or equal to setting electric current upper limit value or the current exhaust gas temperature whether be greater than or
Equal to set temperature upper limit value；
If the current flow is greater than or equal to the setting electric current upper limit value or the current exhaust gas temperature is greater than or equal to institute
Set temperature upper limit value is stated, then controls the overload protection mode that the air-conditioning enters setting, to realize the mistake to the air-conditioning
Load protection；
If the current flow is less than the setting electric current upper limit value and the current exhaust gas temperature is less than in the set temperature
Limit value then realizes the overload protection of the air-conditioning according to the corresponding benchmark delivery temperature of the current flow.
2. the method according to claim 1, wherein obtaining the current flow and pressure of the complete machine of the air-conditioning
The current exhaust gas temperature of contracting machine, comprising:
The current flow of the complete machine of the air-conditioning detected by current detection means is obtained, and is obtained by temperature-detecting device
Detect the current exhaust gas temperature at the exhaust pipe of the compressor of the obtained air-conditioning.
3. method according to claim 1 or 2, which is characterized in that according to the corresponding base platoon's temperature of the current flow
Degree realizes the overload protection of the air-conditioning, comprising:
Determine benchmark delivery temperature corresponding with the current flow；The benchmark delivery temperature is less than the set temperature upper limit
Value；
Determine whether the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature；
If the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature, controls the air-conditioning and enter the excessively negative of setting
Lotus protected mode, to realize the overload protection to the air-conditioning.
4. according to the method described in claim 3, it is characterized in that, determining base platoon corresponding with current flow temperature
Degree, comprising:
F (χ)=A/ (χ-B)+C；
Wherein, f (χ) is benchmark delivery temperature；χ is the current flow；A, B, C are design factor, and the design factor
It is matched with the specified heat exchange amount and/or type of the air-conditioning.
5. the method according to claim 3 or 4, which is characterized in that according to the corresponding base platoon's temperature of the current flow
Degree realizes the overload protection of the air-conditioning, further includes:
If the current exhaust gas temperature is less than the benchmark delivery temperature, controls the air-conditioning and operate normally, and return to acquisition
The step of current exhaust gas temperature of the current flow of the complete machine of the air-conditioning and compressor, to continue to determine that the air-conditioning is
It is no to need to enter overload protection.
6. method described in one of -5 according to claim 1, which is characterized in that the overload protection mode, comprising: control institute
State compressor shutdown.
7. a kind of overload protection device of air-conditioning characterized by comprising
Acquiring unit, for obtaining the current flow of the complete machine of the air-conditioning and the current exhaust gas temperature of compressor；
Control unit, for determining whether the current flow is greater than or equal to setting electric current upper limit value or the current exhaust
Whether temperature is greater than or equal to set temperature upper limit value；
Described control unit, if being also used to the current flow is greater than or equal to the setting electric current upper limit value or described current
Delivery temperature is greater than or equal to the set temperature upper limit value, then controls the overload protection mode that the air-conditioning enters setting,
To realize the overload protection to the air-conditioning；
Described control unit, if being also used to the current flow less than the setting electric current upper limit value and the current exhaust temperature
Degree is less than the set temperature upper limit value, then the mistake of the air-conditioning is realized according to the corresponding benchmark delivery temperature of the current flow
Load protection.
8. device according to claim 7, which is characterized in that the acquiring unit obtains the current of the complete machine of the air-conditioning
The current exhaust gas temperature of electric current and compressor, comprising:
The current flow of the complete machine of the air-conditioning detected by current detection means is obtained, and is obtained by temperature-detecting device
Detect the current exhaust gas temperature at the exhaust pipe of the compressor of the obtained air-conditioning.
9. device according to claim 7 or 8, which is characterized in that described control unit is corresponding according to the current flow
Benchmark delivery temperature realize the overload protection of the air-conditioning, comprising:
Determine benchmark delivery temperature corresponding with the current flow；The benchmark delivery temperature is less than the set temperature upper limit
Value；
Determine whether the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature；
If the current exhaust gas temperature is greater than or equal to the benchmark delivery temperature, controls the air-conditioning and enter the excessively negative of setting
Lotus protected mode, to realize the overload protection to the air-conditioning.
10. device according to claim 9, which is characterized in that determine base platoon corresponding with current flow temperature
Degree, comprising:
F (χ)=A/ (χ-B)+C；
Wherein, f (χ) is benchmark delivery temperature；χ is the current flow；A, B, C are design factor, and the design factor
It is matched with the specified heat exchange amount and/or type of the air-conditioning.
11. device according to claim 9 or 10, which is characterized in that described control unit is according to the current flow pair
The benchmark delivery temperature answered realizes the overload protection of the air-conditioning, further includes:
If the current exhaust gas temperature is less than the benchmark delivery temperature, controls the air-conditioning and operate normally, and return to acquisition
The step of current exhaust gas temperature of the current flow of the complete machine of the air-conditioning and compressor, to continue to determine that the air-conditioning is
It is no to need to enter overload protection.
12. the device according to one of claim 7-11, which is characterized in that the overload protection mode, comprising: control
The compressor shutdown.
13. a kind of air-conditioning characterized by comprising the overload protection device of the air-conditioning as described in claim 7-12 is any.
14. a kind of storage medium, which is characterized in that be stored with a plurality of instruction in the storage medium；The a plurality of instruction, is used for
It is loaded by processor and executes the overload protection method of the air-conditioning as described in claim 1-6 is any.
15. a kind of air-conditioning characterized by comprising
Processor, for executing a plurality of instruction；
Memory, for storing a plurality of instruction；
Wherein, a plurality of instruction for being stored by the memory, and is loaded by the processor and is executed such as claim
The overload protection method of any air-conditioning of 1-6.
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| CN201810995089.8A CN109297134B (en) | 2018-08-29 | 2018-08-29 | Overload protection method and device for air conditioner, storage medium and air conditioner |
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| CN110595015A (en) * | 2019-09-25 | 2019-12-20 | 珠海格力电器股份有限公司 | Adjusting method and device of frequency conversion equipment |
| CN110617606A (en) * | 2019-09-23 | 2019-12-27 | 芜湖美智空调设备有限公司 | Air conditioner and control method and system thereof |
| CN110779161A (en) * | 2019-11-18 | 2020-02-11 | 宁波奥克斯电气股份有限公司 | Control method and device for compressor overload protection and air conditioner |
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| CN112050429A (en) * | 2019-06-05 | 2020-12-08 | 青岛海尔空调器有限总公司 | Control method and device for fixed-frequency air conditioner and fixed-frequency air conditioner |
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| CN111076349A (en) * | 2019-12-24 | 2020-04-28 | 珠海格力电器股份有限公司 | Operation control method and device, storage medium and air conditioner |
| CN111637587A (en) * | 2020-05-28 | 2020-09-08 | 宁波奥克斯电气股份有限公司 | Control method and system for compressor overload protection and air conditioner |
| CN111795479A (en) * | 2020-07-09 | 2020-10-20 | 广东Tcl智能暖通设备有限公司 | Control method and device for air conditioner outdoor unit, air conditioner outdoor unit and storage medium |
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