CN110319631A - A kind of defrosting control method, device, storage medium and heat pump unit - Google Patents
A kind of defrosting control method, device, storage medium and heat pump unit Download PDFInfo
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- CN110319631A CN110319631A CN201910649876.1A CN201910649876A CN110319631A CN 110319631 A CN110319631 A CN 110319631A CN 201910649876 A CN201910649876 A CN 201910649876A CN 110319631 A CN110319631 A CN 110319631A
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- Prior art keywords
- temperature
- defrost
- heat pump
- equal
- less
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
Abstract
The invention discloses a kind of defrosting control method, device, storage medium and heat pump units, this method comprises: determining whether inflow temperature of the heat pump unit before defrost is less than or equal to the first set temperature；If the inflow temperature is less than or equal to first set temperature, enter defrost process, and determines whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are reduced to less than or equal to the second set temperature；If the leaving water temperature and the antifreeze temperature are respectively less than or are equal to second set temperature, load down step by step is executed in assumed load ratio and is controlled, until being reduced to setting minimum load backed off after random defrost process.The solution of the present invention can solve the problem of influencing compressor operational reliability because of the too low freezing package internal duct of water temperature, achieve the effect that promote compressor operational reliability.
Description
Technical field
The invention belongs to technical field of heat pumps, and in particular to a kind of defrosting control method, device, storage medium and heat pump machine
Group more particularly to a kind of air conditioner and heat pump unit defrost antifreeze control method, device, storage medium and heat pump unit.
Background technique
Air source heat pump as a kind of efficient domestic water and warming by air conditioner mode, it is high by feat of its heating efficiency,
The advantages that environmentally friendly, promotes on a large scale；But air source heat pump is in the process of running, when the temperature of the surroundings is low, humidity compared with
Gao Shi, outdoor heat exchanger fin surface have frosting, and as the heat pump working time continues, frost layer can gradually thicken, defrost process
In will lead to and reduced using side water temperature or frozen pipe.
Defrost is antifreeze to be used as air source heat pump reliability important component, can be normal by intelligent defrosting freezing proof technique
Defrosting, and can be effectively antifreeze.At present unit there are before defrost or defrost process detection water temperature meet antifreeze condition directly exiting
Frost causes unit frost layer to be accumulated repeatedly, causes unit hydrops, influences the reliability service of compressor.
Summary of the invention
It is an object of the present invention in view of the foregoing drawbacks, a kind of defrosting control method, device, storage medium and heat are provided
Pump assembly reaches promotion to solve the problems, such as to influence compressor operational reliability because of the too low freezing package internal duct of water temperature
The effect of compressor operational reliability.
The present invention provides a kind of defrosting control method, comprising: determines whether inflow temperature of the heat pump unit before defrost be small
In or equal to the first set temperature；If the inflow temperature is less than or equal to first set temperature, enter defrost process,
And determine whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are reduced to less than or equal to the second setting
Temperature；If the leaving water temperature and the antifreeze temperature are respectively less than or are equal to second set temperature, by assumed load ratio
Example executes load down step by step and controls, until being reduced to setting minimum load backed off after random defrost process.
Optionally, further includes: after exiting defrost process, then control heat pump unit with assumed load ratio starting and again
Into defrost process, until controlling heat pump unit again after exiting the defrost process reentered to set ratio fortune at full capacity
Row.
Optionally it is determined that whether inflow temperature of the heat pump unit before defrost is less than or equal to the first set temperature, comprising:
Obtain inflow temperature of the heat pump unit before defrost；Whether the inflow temperature is less than or is waited in continuous first preset duration
It is determined in the first set temperature.
Optionally it is determined that leaving water temperature and antifreeze temperature of the heat pump unit during defrost whether decrease below or
Equal to the second set temperature, comprising: obtain leaving water temperature and antifreeze temperature of the heat pump unit during defrost respectively；Continuous
The and whether the second set temperature is reduced to less than or equal to the leaving water temperature and the antifreeze temperature in preset duration
It is determined.
Optionally, it executes load down step by step in assumed load ratio to control, comprising: execute drop in the first assumed load ratio
After load control system, again determine leaving water temperature and antifreeze temperature of the heat pump unit during defrost whether decrease below or
Equal to the second set temperature；It is negative by the first setting again if the leaving water temperature is less than or equal to second set temperature
Lotus ratio executes load down control.
Match with the above method, another aspect of the present invention provides a kind of defrosting control device, comprising: determination unit is used
In determining whether inflow temperature of the heat pump unit before defrost is less than or equal to the first set temperature；Control unit, if being used for institute
Inflow temperature is stated less than or equal to first set temperature, then enters defrost process, and determines heat pump unit in defrost process
In leaving water temperature and antifreeze temperature whether be reduced to less than or equal to the second set temperature；Described control unit is also used to
If the leaving water temperature and the antifreeze temperature are respectively less than or are equal to second set temperature, executed in assumed load ratio
Load down controls step by step, until being reduced to setting minimum load backed off after random defrost process.
Optionally, further includes: described control unit is also used to after exiting defrost process, then controls heat pump unit to set
Constant load ratio starts and reenters defrost process, until controlling heat pump unit again after exiting the defrost process reentered
It is run with setting ratio at full capacity.
Optionally, the determination unit determines whether inflow temperature of the heat pump unit before defrost is less than or equal to first and sets
Determine temperature, comprising: obtain inflow temperature of the heat pump unit before defrost；To the inflow temperature in continuous first preset duration
Whether it is less than or equal to the first set temperature to be determined.
Optionally, described control unit determines whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are equal
It is reduced to less than or equal to the second set temperature, comprising: obtain leaving water temperature of heat pump unit during defrost respectively and prevent
Freeze temperature；Continuous and whether the leaving water temperature and the antifreeze temperature are reduced to less than or equal in preset duration
Second set temperature is determined.
Optionally, described control unit executes load down step by step in assumed load ratio and controls, comprising: negative by the first setting
After lotus ratio executes load down control, determine whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are equal again
It is reduced to less than or equal to the second set temperature；If the leaving water temperature is less than or equal to second set temperature, again
Load down control is executed in the first assumed load ratio.
Match with above-mentioned apparatus, further aspect of the present invention provides a kind of heat pump unit, comprising: above-described defrost control
Device processed.
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 executing above-described defrosting control method.
Match with the above method, further aspect of the present invention provides a kind of heat pump unit, 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 by
The processor loads and executes above-described defrosting control method.
The solution of the present invention, by before defrost detect inflow temperature value, defrost process detect leaving water temperature value, two its
In a satisfaction, then exit defrost, make heat exchanger copper pipe not by bursting by freezing, promote compressor operational reliability.
Further, the solution of the present invention, by being measured in real time before defrost by using side water inlet temperature sensing package temperature,
Pass through water outlet temperature sensing package during defrost and antifreeze temperature sensing package temperature is measured in real time, rationally control unit load, effectively controls
Heating pump defrost before, defrost process detected using side water temperature, be conducive to promoted unit operational reliability.
Further, the solution of the present invention, by being measured in real time before defrost by using side water inlet temperature sensing package temperature,
Pass through water outlet temperature sensing package during defrost and antifreeze temperature sensing package temperature is measured in real time, cooperates the antifreeze control of artificial intelligence defrost
Logic, effectively control heat pump defrost before, defrost process detected using side water temperature, to realize the mesh of the antifreeze control of intelligent defrosting
, it realizes that the normal defrost of heat pump, effectively antifreeze reliability are promoted to a certain extent, promotes unit operational reliability.
Further, the solution of the present invention, by being measured in real time before defrost by using side water inlet temperature sensing package temperature,
Temperature sensing package is discharged by using side during defrost and is measured in real time using the antifreeze temperature sensing package temperature in side, adjusting can be passed through
Unit load effectively solves the problems, such as that defrost process water temperature is antifreeze, promotes unit operational reliability.
Further, the solution of the present invention goes out water temperature during defrost by the inflow temperature before detection hot water machine defrost
Degree, water temperature is on a declining curve, then terminates defrost, solves the problems, such as to promote unit fortune because of the too low freezing package internal duct of water temperature
Row reliability.
The solution of the present invention as a result, goes out water temperature during defrost by the inflow temperature before detection hot water machine defrost
Degree, water temperature is on a declining curve, then terminates defrost, and solving to influence compressor operation because of the too low freezing package internal duct of water temperature can
The problem of by property, promotes compressor operational reliability.
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 defrosting control method of the invention；
Fig. 2 is to determine whether inflow temperature of the heat pump unit before defrost is less than or equal to first and sets in method of the invention
Determine the flow diagram of an embodiment of temperature；
Fig. 3 is to determine whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are equal in method of the invention
It is reduced to less than or equal to the flow diagram of an embodiment of the second set temperature；
Fig. 4 is to show in method of the invention in the process that assumed load ratio executes an embodiment of load down control step by step
It is intended to；
Fig. 5 is the structural schematic diagram of an embodiment of defrosting control device of the invention；
Fig. 6 is the defrosting control flow diagram of an embodiment of heat pump unit of the invention.
In conjunction with attached drawing, appended drawing reference is as follows in the embodiment of the present invention:
102- determination 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, providing a kind of defrosting control method, the one of method of the invention is real as shown in Figure 1
Apply the flow diagram of example.The defrosting control method may include: step S110 to step S130.
At step S110, determine whether inflow temperature of the heat pump unit before defrost is less than or equal to the first setting temperature
Degree.
It is alternatively possible to determine that inflow temperature of the heat pump unit before defrost is in method of the invention as shown in connection with fig. 2
The no embodiment flow diagram for being less than or equal to the first set temperature further illustrates and determines heat pump unit in step S110
Whether the inflow temperature before defrost is less than or equal to the detailed process of the first set temperature, may include: step S210 and step
Rapid S220.
Step S210 obtains inflow temperature of the heat pump unit before defrost.
Whether step S220 is less than or equal to the first set temperature to the inflow temperature in continuous first preset duration
It is determined, to determine water inlet in the case that inflow temperature is less than or equal to the first set temperature in continuous first preset duration
Temperature is greater than the first set temperature.
Such as: determine whether inflow temperature of the heat pump unit before defrost is less than or equal to the process of the first set temperature,
It can also determine in this way: determine whether first inflow temperature of the heat pump unit before defrost is greater than the first set temperature.Example
Such as: determining whether first inflow temperature of the heat pump unit before defrost is greater than preset first set temperature and (controls before such as defrost
Water inlet minimum temperature T1).Wherein it is determined that whether first inflow temperature of the heat pump unit before defrost is greater than preset first water inlet
Temperature may include: to obtain first inflow temperature of the heat pump unit before defrost, to described the in continuous first preset duration
Whether one inflow temperature, which is greater than the first set temperature, is determined, in continuous first preset duration the first inflow temperature be greater than
Determine that the first inflow temperature is greater than the first set temperature in the case where first set temperature.
In turn, it if first inflow temperature is greater than first set temperature, waits and determines that heat pump unit is being changed
Whether the second inflow temperature before frost is reduced to less than or equal to first set temperature.Wherein it is determined that heat pump unit is being changed
Whether the second inflow temperature after frost is less than or equal to first set temperature, may include: to obtain heat pump unit in defrost
The second inflow temperature afterwards, continuous and in preset duration to described and whether inflow temperature is less than or equal to the first setting
Temperature is determined, in the case that in continuous second preset duration the, inflow temperature is less than or equal to the first set temperature
Determine that the second inflow temperature is less than or equal to the first set temperature.
And then if second inflow temperature is less than or equal to first set temperature, it is determined that heat pump unit exists
Whether the inflow temperature before defrost is less than or equal to the first set temperature.The inflow temperature may include: the first inflow temperature
With the second inflow temperature.
Such as: whether in following section T1, (such as: T1 is into defrost condition (inflow temperature) for continuous t1 time such as 5s detection
The minimum water temperature of control water inlet, 10 DEG C of target preferred value > before defrost), the antifreeze T2 of defrost, which can be carried out, if meeting condition enters item
Part (such as: detection inflow temperature, target preferred value≤10 DEG C) judges link, if being unsatisfactory for the section condition, directly jumps out, presses
According to original control operation (such as: not entering defrost antifreeze control method, executed by unit original defrosting control).
It is just final true when as a result, by continuously determining inflow temperature within a certain period of time less than or equal to the first set temperature
It is fixed, so that more accurate to the judgement on defrost opportunity and reliable.
At step S120, if the inflow temperature is less than or equal to first set temperature, enter defrost process,
And determine whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are reduced to less than or equal to the second setting
Temperature.Second set temperature is less than first set temperature.
It is alternatively possible to determine that heat pump unit goes out water temperature during defrost in method of the invention as shown in connection with fig. 3
Whether degree and antifreeze temperature are reduced to less than or equal to an embodiment flow diagram of the second set temperature, further illustrate
Determine whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are reduced to less than or equal in step S120
The detailed process of second set temperature may include: step S310 and step S320.
Step S310 obtains leaving water temperature and antifreeze temperature of the heat pump unit during defrost respectively.
Step S320, continuous and whether the leaving water temperature and the antifreeze temperature are reduced in preset duration
It is determined less than or equal to the second set temperature, with the leaving water temperature in continuous second preset duration and the antifreeze temperature
Degree is reduced to less than or equal to determine that the leaving water temperature and the antifreeze temperature reduce in the case where the second set temperature
To less than or equal to the second set temperature.
As a result, and continuously determining leaving water temperature within a certain period of time and antifreeze temperature is reduced to less than or equal to
It is just finally determined when set temperature, so that more accurate and reliable to the judgement on the antifreeze control opportunity during defrost.
At step S130, if the leaving water temperature and the antifreeze temperature are respectively less than or are equal to the second setting temperature
Degree then executes load down step by step in assumed load ratio and controls, until being reduced to setting minimum load backed off after random defrost process.
Such as: the defrost antifreeze control method under a kind of heat pump defrost is provided, by detecting inflow temperature before defrost
Value, defrost process detect leaving water temperature value, and two one of satisfactions then exit defrost, make heat exchanger copper pipe not by bursting by freezing.Example
Such as: by the inflow temperature before detection hot water machine defrost, leaving water temperature during defrost, water temperature is on a declining curve, then terminates
Defrost is solved the problems, such as because of the too low freezing package internal duct of water temperature.In this way, detecting inflow temperature value, defrost process before defrost
Leaving water temperature value is detected, two one of satisfactions then exit defrost, make heat exchanger copper pipe not by bursting by freezing.
Such as: it is measured in real time before defrost by using side water inlet temperature sensing package temperature, by going out talent for swimming during defrost
Thermometer bulb and antifreeze temperature sensing package temperature are measured in real time, and cooperate the antifreeze control logic of artificial intelligence defrost, and it is negative rationally to control unit
Lotus, before effectively controlling heat pump defrost, defrost process detected using side water temperature, to realize the purpose of the antifreeze control of intelligent defrosting,
Realize that the normal defrost of heat pump, effectively antifreeze reliability are promoted to a certain extent.
Such as: antifreeze during defrost ,≤5 DEG C of water outlet, then 25% load every time, is minimized load, water outlet, antifreeze temperature
Also less than 5 DEG C of degree, then exit defrost.
Such as: unit A B C D four systems, carry out the antifreeze entry condition judgement of defrost, A system stops, B
Tri- systems of C D continue normal defrost, stop waiting after the completion of defrost, and the starting defrost of A system is completed, then B C D tri- is
System starting.
As a result, by entering defrost opportunity according to inflow temperature judgement before defrost, according to water temperature out during defrost
Degree and antifreeze temperature judge the antifreeze control opportunity during defrost, improve the accuracy and reliability of antifreeze control, thus
Preferably promote unit reliability of operation and safety.
It can also include: then to control heat pump unit after exiting defrost process to set in an optional embodiment
Load proportion starts and reenters defrost process, until exit after the defrost process reentered control again heat pump unit with
Ratio is run at full capacity for setting.
Such as: after executing load down control step by step by setting ratio, until heat pump unit, which exits after defrost, waits the
It after three setting durations, then controls heat pump unit and starts and reenter defrost process with assumed load ratio, until it is heavy to exit this
Heat pump unit is controlled after the defrost process newly entered again to set ratio operation at full capacity.
Such as: continuous t1 such as 5s detection enters defrost condition (inflow temperature) and enters (≤10 DEG C) section T2, then can carry out
The antifreeze T3 entry condition of defrost (such as: defrost process is antifreeze, is discharged minimum water temperature, target preferred value≤5 DEG C) judges link, holds
Row load down 25% controls, and shuts down and waits after normally exiting defrost, and 25% load launches into defrost, after exiting defrost,
Then execute former control operation at full capacity.Such as: defrost advance coolant-temperature gage≤10 DEG C.
As a result, by carrying out defrost again after exiting defrost, the completeness of defrost can be promoted, and then avoids freezing,
Further promote unit operational reliability.
It is controlled it is alternatively possible to execute load down step by step in assumed load ratio in method of the invention as shown in connection with fig. 4
An embodiment flow diagram, further illustrate step S130 in by assumed load ratio execute step by step load down control tool
Body process may include: step S410 and step S420.
Step S410 after executing load down control in the first assumed load ratio, determines heat pump unit in defrost again
Whether leaving water temperature and antifreeze temperature in journey are reduced to less than or equal to the second set temperature.
Step S420, it is negative by the first setting again if the leaving water temperature is less than or equal to second set temperature
Lotus ratio executes load down control.
Such as: continuous t2 such as 60s detects leaving water temperature, antifreeze temperature T3≤5 DEG C section during defrost, then can be changed
The antifreeze entry condition of frost judges link, executes load down 50% and controls, if detection (leaving water temperature), (antifreeze temperature) > 5T4
DEG C section then normally exits after defrost to shut down waiting, and 50% load launches into defrost, after exiting defrost, then executes at full capacity
Original control operation.If defrost process detects leaving water temperature, antifreeze temperature T3≤5 DEG C as continuous t2 time such as 60s, then 75% negative
Lotus is analogized with secondary.
As a result, by the way that load down controls in proportion step by step, so that the antifreeze control during defrost is more stable and safe.
Through a large amount of verification experimental verification, changed using the technical solution of the present embodiment by detecting inflow temperature value before defrost
White process detects leaving water temperature value, and two one of satisfactions then exit defrost, heat exchanger copper pipe is made by bursting by freezing, not promote pressure
Contracting machine operational reliability.
According to an embodiment of the invention, additionally providing a kind of defrosting control device corresponding to defrosting control method.Referring to
The structural schematic diagram of one embodiment of the device of the invention shown in Fig. 5.The defrosting control device may include: determination unit 102
With control unit 104.
In an optional example, determination unit 102, being determined for inflow temperature of the heat pump unit before defrost is
It is no to be less than or equal to the first set temperature.The concrete function of the determination unit 102 and processing are referring to step S110.
Optionally, the determination unit 102 determines whether inflow temperature of the heat pump unit before defrost is less than or equal to the
One set temperature may include:
The determination unit 102 specifically can be also used for obtaining inflow temperature of the heat pump unit before defrost.The control list
The concrete function of member 104 and processing see also step S210.
The determination unit 102, specifically can be also used in continuous first preset duration to the inflow temperature whether
Be determined less than or equal to the first set temperature, in continuous first preset duration inflow temperature be less than or equal to and first set
Determine to determine that inflow temperature is greater than the first set temperature in the case where temperature.The concrete function of the control unit 104 and processing are also joined
See step S220.
Such as: determine whether inflow temperature of the heat pump unit before defrost is less than or equal to the process of the first set temperature,
It can also determine in the following manner: determine whether first inflow temperature of the heat pump unit before defrost is greater than the first set temperature.
Such as: determine whether first inflow temperature of the heat pump unit before defrost is greater than preset first set temperature and (controls before such as defrost
System water inlet minimum temperature T1).Wherein it is determined that first inflow temperature of the heat pump unit before defrost whether be greater than preset first into
Coolant-temperature gage may include: the first inflow temperature for obtaining heat pump unit before defrost, to described in continuous first preset duration
Whether the first inflow temperature, which is greater than the first set temperature, is determined, in continuous first preset duration the first inflow temperature it is big
Determine that the first inflow temperature is greater than the first set temperature in the case where the first set temperature.
In turn, it if first inflow temperature is greater than first set temperature, waits and determines that heat pump unit is being changed
Whether the second inflow temperature before frost is reduced to less than or equal to first set temperature.Wherein it is determined that heat pump unit is being changed
Whether the second inflow temperature after frost is less than or equal to first set temperature, may include: to obtain heat pump unit in defrost
The second inflow temperature afterwards, continuous and in preset duration to described and whether inflow temperature is less than or equal to the first setting
Temperature is determined, in the case that in continuous second preset duration the, inflow temperature is less than or equal to the first set temperature
Determine that the second inflow temperature is less than or equal to the first set temperature.
And then if second inflow temperature is less than or equal to first set temperature, it is determined that heat pump unit exists
Whether the inflow temperature before defrost is less than or equal to the first set temperature.The inflow temperature may include: the first inflow temperature
With the second inflow temperature.
Such as: whether in following section T1, (such as: T1 is into defrost condition (inflow temperature) for continuous t1 time such as 5s detection
The minimum water temperature of control water inlet, 10 DEG C of target preferred value > before defrost), the antifreeze T2 of defrost, which can be carried out, if meeting condition enters item
Part (such as: detection inflow temperature, target preferred value≤10 DEG C) judges link, if being unsatisfactory for the section condition, directly jumps out, presses
According to original control operation (such as: not entering defrost antifreeze control method, executed by unit original defrosting control).
It is just final true when as a result, by continuously determining inflow temperature within a certain period of time less than or equal to the first set temperature
It is fixed, so that more accurate to the judgement on defrost opportunity and reliable.
In an optional example, control unit 104, if can be used for the inflow temperature less than or equal to described first
Set temperature then enters defrost process, and determines whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are equal
It is reduced to less than or equal to the second set temperature.Second set temperature is less than first set temperature.The control unit
104 concrete function and processing are referring to step S120.
Optionally, described control unit 104 determines that leaving water temperature and antifreeze temperature of the heat pump unit during defrost are
It is no to be reduced to less than or equal to the second set temperature, may include:
Described control unit 104 specifically can be also used for obtaining leaving water temperature of heat pump unit during defrost respectively
With antifreeze temperature.The concrete function of the control unit 104 and processing see also step S310.
Described control unit 104, specifically can be also used for continuous and to the leaving water temperature and institute in preset duration
It states antifreeze temperature and whether is reduced to less than or equal to the second set temperature and be determined, with the institute in continuous second preset duration
It states leaving water temperature and the antifreeze temperature is reduced to less than or equal to determine the water temperature out in the case where the second set temperature
Degree and the antifreeze temperature are reduced to less than or equal to the second set temperature.The concrete function of the control unit 104 and processing
See also step S320.
As a result, and continuously determining leaving water temperature within a certain period of time and antifreeze temperature is reduced to less than or equal to
It is just finally determined when set temperature, so that more accurate and reliable to the judgement on the antifreeze control opportunity during defrost.
In an optional example, described control unit 104, if can be also used for the leaving water temperature and the antifreeze temperature
Degree is respectively less than or is equal to second set temperature, then executes load down step by step in assumed load ratio and control, until being reduced to
Set minimum load backed off after random defrost process.The concrete function of the control unit 104 and processing see also step S130.
Such as: the defrost antifreeze control method under a kind of heat pump defrost is provided, by detecting inflow temperature before defrost
Value, defrost process detect leaving water temperature value, and two one of satisfactions then exit defrost, make heat exchanger copper pipe not by bursting by freezing.Example
Such as: by the inflow temperature before detection hot water machine defrost, leaving water temperature during defrost, water temperature is on a declining curve, then terminates
Defrost is solved the problems, such as because of the too low freezing package internal duct of water temperature.In this way, detecting inflow temperature value, defrost process before defrost
Leaving water temperature value is detected, two one of satisfactions then exit defrost, make heat exchanger copper pipe not by bursting by freezing.
Such as: it is measured in real time before defrost by using side water inlet temperature sensing package temperature, by going out talent for swimming during defrost
Thermometer bulb and antifreeze temperature sensing package temperature are measured in real time, and cooperate the antifreeze control logic of artificial intelligence defrost, and it is negative rationally to control unit
Lotus, before effectively controlling heat pump defrost, defrost process detected using side water temperature, to realize the purpose of the antifreeze control of intelligent defrosting,
Realize that the normal defrost of heat pump, effectively antifreeze reliability are promoted to a certain extent.
Such as: antifreeze during defrost ,≤5 DEG C of water outlet, then 25% load every time, is minimized load, water outlet, antifreeze temperature
Also less than 5 DEG C of degree, then exit defrost.
Such as: unit A B C D four systems, carry out the antifreeze entry condition judgement of defrost, A system stops, B
Tri- systems of C D continue normal defrost, stop waiting after the completion of defrost, and the starting defrost of A system is completed, then B C D tri- is
System starting.
As a result, by entering defrost opportunity according to inflow temperature judgement before defrost, according to water temperature out during defrost
Degree and antifreeze temperature judge the antifreeze control opportunity during defrost, improve the accuracy and reliability of antifreeze control, thus
Preferably promote unit reliability of operation and safety.
Optionally, described control unit 104 executes load down step by step in assumed load ratio and controls, and may include:
Described control unit 104 specifically can be also used for after executing load down control in the first assumed load ratio, again
Determine whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are reduced to less than or equal to the second setting temperature
Degree.The concrete function of the control unit 104 and processing see also step S410.
Described control unit 104, if specifically can be also used for the leaving water temperature is less than or equal to the second setting temperature
Degree then executes load down control in the first assumed load ratio again.The concrete function of the control unit 104 and processing are seen also
Step S420.
Such as: continuous t2 such as 60s detects leaving water temperature, antifreeze temperature T3≤5 DEG C section during defrost, then can be changed
The antifreeze entry condition of frost judges link, executes load down 50% and controls, if detection (leaving water temperature), (antifreeze temperature) > 5T4
DEG C section then normally exits after defrost to shut down waiting, and 50% load launches into defrost, after exiting defrost, then executes at full capacity
Original control operation.If defrost process detects leaving water temperature, antifreeze temperature T3≤5 DEG C as continuous t2 time such as 60s, then 75% negative
Lotus is analogized with secondary.
As a result, by the way that load down controls in proportion step by step, so that the antifreeze control during defrost is more stable and safe.
It can also include: described control unit 104 in an optional embodiment, can be also used for exiting defrost
It after process, then controls heat pump unit and starts and reenter defrost process with assumed load ratio, reentered until exiting this
Defrost process after control heat pump unit again with set at full capacity ratio operation.
Such as: after executing load down control step by step by setting ratio, until heat pump unit, which exits after defrost, waits the
It after three setting durations, then controls heat pump unit and starts and reenter defrost process with assumed load ratio, until it is heavy to exit this
Heat pump unit is controlled after the defrost process newly entered again to set ratio operation at full capacity.
Such as: continuous t1 such as 5s detection enters defrost condition (inflow temperature) and enters (≤10 DEG C) section T2, then can carry out
The antifreeze T3 entry condition of defrost (such as: defrost process is antifreeze, is discharged minimum water temperature, target preferred value≤5 DEG C) judges link, holds
Row load down 25% controls, and shuts down and waits after normally exiting defrost, and 25% load launches into defrost, after exiting defrost,
Then execute former control operation at full capacity.Such as: defrost advance coolant-temperature gage≤10 DEG C.
As a result, by carrying out defrost again after exiting defrost, the completeness of defrost can be promoted, and then avoids freezing,
Further promote unit operational reliability.
The processing and function realized by the device of the present embodiment essentially correspond to earlier figures 1 to method shown in Fig. 4
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 being intake temperature-sensitive before defrost by using side
Packet temperature is measured in real time, and passes through water outlet temperature sensing package during defrost and antifreeze temperature sensing package temperature is measured in real time, rationally
Control unit load, effectively control heat pump defrost before, defrost process detected using side water temperature, be conducive to promoted unit it is reliable for operation
Property.
According to an embodiment of the invention, additionally providing a kind of heat pump unit corresponding to defrosting control device.The heat pump machine
Group may include: above-described defrosting control device.
In an optional embodiment, it is contemplated that since the preferential water temperature of defrost process determines, lead to each fin frost layer
Do not change completely, frost layer is accumulated repeatedly, hydrops inside compressor, lubricating oil dilution, influences compressor reliability operation.Such as:
Chilled water during defrost freezes when heat exchanger water temperature inside declines 0 DEG C, and shrinkage expands bursting by freezing copper pipe, and refrigerant is caused to be let out
It has been leaked that, coolant system such as fluorine system system water inlet.The solution of the present invention provides the antifreeze controlling party of defrost under a kind of heat pump defrost
Method, by detecting inflow temperature value before defrost, defrost process detects leaving water temperature value, and two one of satisfactions then exit
Defrost makes heat exchanger copper pipe not by bursting by freezing.
In an optional example, the defrost antifreeze control method under a kind of heat pump defrost is aspects of which provided,
It is measured in real time before defrost by using side water inlet temperature sensing package temperature, passes through water outlet temperature sensing package and antifreeze temperature-sensitive during defrost
Packet temperature is measured in real time, and is cooperated the antifreeze control logic of artificial intelligence defrost, is rationally controlled unit load, effectively control heat pump
Before defrost, defrost process detected using side water temperature, to realize the purpose of the antifreeze control of intelligent defrosting, realize to a certain extent
The normal defrost of heat pump, effectively antifreeze reliability are promoted.
Such as: the completely new defrosting control logic detection water temperature of one kind that the solution of the present invention is endured, by adjusting unit load,
Effectively solve the problems, such as that defrost process water temperature is antifreeze.Preferably, it is carried out before defrost by using side water inlet temperature sensing package temperature real-time
Detection is discharged temperature sensing package by using side during defrost and is measured in real time using the antifreeze temperature sensing package temperature in side, cooperates people
The antifreeze control logic of work intelligent defrosting, rationally controls unit load, effectively control heat pump defrost before, defrost process use side water temperature
Detection realizes the normal defrost of heat pump, effectively solves that defrost process is antifreeze to ask to realize the purpose of the antifreeze control of intelligent defrosting
Topic, makes product reliability get a promotion.
As it can be seen that the solution of the present invention goes out water temperature during defrost by the inflow temperature before detection hot water machine defrost
Degree, water temperature is on a declining curve, then terminates defrost, solves the problems, such as because of the too low freezing package internal duct of water temperature.In this way, before defrost
Inflow temperature value is detected, defrost process detects leaving water temperature value, and two one of satisfactions then exit defrost, make heat-exchanger copper
Pipe is not by bursting by freezing.
In an optional specific embodiment, can example as shown in connection with fig. 6, to the specific reality of the solution of the present invention
Existing process illustrates.
In an optional specific example, as shown in fig. 6, the present invention provides the antifreeze controls of defrost under a kind of heat pump defrost
Method processed is measured in real time by using side water inlet temperature sensing package temperature before defrost, goes out talent for swimming by using side during defrost
It thermometer bulb and is measured in real time using the antifreeze temperature sensing package temperature in side, cooperates the antifreeze control logic of artificial intelligence defrost, rationally control
Unit load, effectively control heat pump defrost before, defrost process detected using side water temperature, to realize the antifreeze control of intelligent defrosting
Purpose, realize to a certain extent the normal defrost of heat pump, it is effectively antifreeze prevent frozen pipe, guarantee that unit reliability is promoted.It is specific
Embodiment is as described below:
Step 1, the continuous t1 time such as 5s detection enter defrost condition (inflow temperature) whether section T1 (such as: being of T1
The minimum water temperature of control water inlet, 10 DEG C of target preferred value > before white) enter hereinafter, the antifreeze T2 of defrost can be carried out if meeting condition
Condition (such as: detection inflow temperature, target preferred value≤10 DEG C) judges link；If being unsatisfactory for the section condition, directly jump out,
According to original control operation (such as: not entering defrost antifreeze control method, executed by unit original defrosting control).
Step 2, continuous t1 such as 5s detection enter defrost condition (inflow temperature) and enter (≤10 DEG C) section T2, then can carry out
The antifreeze T3 entry condition of defrost (such as: defrost process is antifreeze, is discharged minimum water temperature, target preferred value≤5 DEG C) judges link, by
Grade executes load down 25% and controls, and shuts down and waits after normally exiting defrost, and 25% load launches into defrost, exits defrost
Afterwards, then former control operation at full capacity is executed.
Such as: defrost advance coolant-temperature gage≤10 DEG C.Antifreeze during defrost ,≤5 DEG C of water outlet, then 25% load every time, drop
To minimum load, water outlet, antifreeze temperature are also less than 5 DEG C, then exit defrost.
Such as: unit A B C D four systems, carry out the antifreeze entry condition judgement of defrost, A system stops, B
Tri- systems of C D continue normal defrost, stop waiting after the completion of defrost, and the starting defrost of A system is completed, then B C D tri- is
System starting.
Continuous t2 such as 60s detects leaving water temperature, antifreeze temperature T3≤5 DEG C section during step 3, defrost, then can carry out
The antifreeze entry condition of defrost judges link, executes load down 50% and controls, if detection (leaving water temperature), (antifreeze temperature) >
Waiting is shut down after then normally exiting defrost in 5T4 DEG C of section, and 50% load launches into defrost, after exiting defrost, then executes full negative
The control operation of lotus original.
If step 5, defrost process detect leaving water temperature, antifreeze temperature T3≤5 DEG C when continuous t2 time such as 60s, then
75% load is analogized with secondary；Then step 2-3-5 executes load down logic.
Step 6, continuous 60t2 detection control minimum water before advancing water > defrost if meeting during detection defrost
Temperature, and then step 3-4-5 executes load down logic for water outlet, antifreeze temperature≤minimum water temperature of defrost process control.
Wherein, in the control parameter of part, the temperature value of outdoor unit water inlet temperature sensing package detection, value inflow temperature: be can be
0~100 DEG C of range.Leaving water temperature: can be the temperature that detects of outdoor unit water outlet temperature sensing package, and 0~100 DEG C of value range.It is anti-
Freeze temperature: can be the temperature that the antifreeze temperature sensing package of outdoor unit detects, 0~100 DEG C of value range.T1 detection time (such as 5s),
0~100s of value range, preferably 5s.T2 detection time (such as 60s), 0~100s of value range, preferably 60s.T1 (is controlled before defrost
The minimum water temperature of system water inlet): 0~100 DEG C of value range, preferably 10 DEG C of >.T2 (the minimum water temperature of defrost condition water inlet): value range
0~100 DEG C, preferably≤10 DEG C.T3 (defrost process is antifreeze, the minimum water temperature of water outlet): 0~100 DEG C of value range, preferably≤5 DEG C.
T4 (defrost process antifreeze, leaving water temperature temperature): 0~100 DEG C of value range, preferably 5 DEG C of >.
The antifreeze control of this heat pump defrost is suitable for multiple system commercialization Hot water units, includes module machine, air-cooled (heat) water spiral shell
Bar unit etc., adaptive type is very strong.
The processing and function realized by the heat pump unit of the present embodiment essentially correspond to aforementioned device shown in fig. 5
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 being intake temperature-sensitive before defrost by using side
Packet temperature is measured in real time, and passes through water outlet temperature sensing package during defrost and antifreeze temperature sensing package temperature is measured in real time, cooperate
The antifreeze control logic of artificial intelligence defrost, effectively control heat pump defrost before, defrost process detected using side water temperature, to realize intelligence
The purpose of the energy antifreeze control of defrost realizes that the normal defrost of heat pump, effectively antifreeze reliability are promoted to a certain extent, promotes unit
Operational reliability.
According to an embodiment of the invention, additionally providing a kind of storage medium corresponding to defrosting control method.The storage is situated between
Matter may include: that a plurality of instruction is stored in the storage medium；The a plurality of instruction, for being loaded by processor and being executed
Above-described defrosting control method.
The processing and function realized by the storage medium of the present embodiment essentially correspond to earlier figures 1 to shown in Fig. 4
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 being intake temperature-sensitive before defrost by using side
Packet temperature is measured in real time, and is discharged temperature sensing package by using side during defrost and is carried out using the antifreeze temperature sensing package temperature in side real
When detect, can by adjust unit load, effectively solve the problems, such as that defrost process water temperature is antifreeze, promotion unit it is reliable for operation
Property.
According to an embodiment of the invention, additionally providing a kind of heat pump unit corresponding to defrosting control method.The heat pump machine
Group 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 execute above-described defrosting control method.
The processing and function realized by the heat pump unit of the present embodiment essentially correspond to earlier figures 1 to shown in Fig. 4
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 the inflow temperature before detection hot water machine defrost,
Leaving water temperature during defrost, water temperature is on a declining curve, then terminates defrost, solves because of the too low freezing package internal duct of water temperature
The problem of, promote unit operational reliability.
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 (13)
1. a kind of defrosting control method characterized by comprising
Determine whether inflow temperature of the heat pump unit before defrost is less than or equal to the first set temperature；
If the inflow temperature is less than or equal to first set temperature, enter defrost process, and determines that heat pump unit exists
Whether leaving water temperature and antifreeze temperature during defrost are reduced to less than or equal to the second set temperature；
If the leaving water temperature and the antifreeze temperature are respectively less than or are equal to second set temperature, in assumed load ratio
It executes load down step by step to control, until being reduced to setting minimum load backed off after random defrost process.
2. the method according to claim 1, wherein further include:
After exiting defrost process, then controls heat pump unit and start and reenter defrost process with assumed load ratio, until
Control heat pump unit again after exiting the defrost process reentered to set ratio operation at full capacity.
3. method according to claim 1 or 2, which is characterized in that determine that inflow temperature of the heat pump unit before defrost is
It is no to be less than or equal to the first set temperature, comprising:
Obtain inflow temperature of the heat pump unit before defrost；
It is determined in continuous first preset duration to whether the inflow temperature is less than or equal to the first set temperature.
4. method according to claim 1 or 2, which is characterized in that determine that heat pump unit goes out water temperature during defrost
Whether degree and antifreeze temperature are reduced to less than or equal to the second set temperature, comprising:
Leaving water temperature and antifreeze temperature of the heat pump unit during defrost are obtained respectively；
Continuous and whether is reduced to less than or equal to the leaving water temperature and the antifreeze temperature in preset duration
Two set temperatures are determined.
5. method according to claim 1 or 2, which is characterized in that load down step by step, which is executed, in assumed load ratio controls,
Include:
After executing load down control in the first assumed load ratio, leaving water temperature of heat pump unit during defrost is determined again
Whether the second set temperature is reduced to less than or equal to antifreeze temperature；
If the leaving water temperature is less than or equal to second set temperature, it is negative that drop is executed in the first assumed load ratio again
Lotus control.
6. a kind of defrosting control device characterized by comprising
Determination unit, for determining whether inflow temperature of the heat pump unit before defrost is less than or equal to the first set temperature；
Control unit enters defrost process, and really if being less than or equal to first set temperature for the inflow temperature
Determine whether leaving water temperature and antifreeze temperature of the heat pump unit during defrost are reduced to less than or equal to the second set temperature；
Described control unit, if being also used to the leaving water temperature and the antifreeze temperature respectively less than or equal to the second setting temperature
Degree then executes load down step by step in assumed load ratio and controls, until being reduced to setting minimum load backed off after random defrost process.
7. device according to claim 6, which is characterized in that further include:
Described control unit is also used to after exiting defrost process, then is controlled heat pump unit and laid equal stress on the starting of assumed load ratio
Newly enter defrost process, until controlling heat pump unit again after exiting the defrost process reentered to set ratio fortune at full capacity
Row.
8. device according to claim 6 or 7, which is characterized in that the determination unit determines heat pump unit before defrost
Inflow temperature whether be less than or equal to the first set temperature, comprising:
Obtain inflow temperature of the heat pump unit before defrost；
It is determined in continuous first preset duration to whether the inflow temperature is less than or equal to the first set temperature.
9. device according to claim 6 or 7, which is characterized in that described control unit determines heat pump unit in defrost
Whether leaving water temperature and antifreeze temperature in journey are reduced to less than or equal to the second set temperature, comprising:
Leaving water temperature and antifreeze temperature of the heat pump unit during defrost are obtained respectively；
Continuous and whether is reduced to less than or equal to the leaving water temperature and the antifreeze temperature in preset duration
Two set temperatures are determined.
10. device according to claim 6 or 7, which is characterized in that described control unit in assumed load ratio execute by
Grade load down control, comprising:
After executing load down control in the first assumed load ratio, leaving water temperature of heat pump unit during defrost is determined again
Whether the second set temperature is reduced to less than or equal to antifreeze temperature；
If the leaving water temperature is less than or equal to second set temperature, it is negative that drop is executed in the first assumed load ratio again
Lotus control.
11. a kind of heat pump unit characterized by comprising the defrosting control device as described in claim 6-7 is any.
12. 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 defrosting control method a method as claimed in any one of claims 1 to 5.
13. a kind of heat pump unit 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
Any defrosting control method of 1-5.
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