CN106766376B - A kind of heat pump unit adjusting method, device and air-conditioning - Google Patents
A kind of heat pump unit adjusting method, device and air-conditioning Download PDFInfo
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- CN106766376B CN106766376B CN201611260966.4A CN201611260966A CN106766376B CN 106766376 B CN106766376 B CN 106766376B CN 201611260966 A CN201611260966 A CN 201611260966A CN 106766376 B CN106766376 B CN 106766376B
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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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- 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
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
- F24F2203/021—Compression cycle
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
Abstract
The present invention provides a kind of heat pump unit adjusting method, device and air-conditionings, which comprises obtains the delivery temperature of compressor；Judge whether the delivery temperature in the first preset duration is all larger than preset temperature；If the delivery temperature is all larger than the preset temperature in first preset duration, the change rate of the delivery temperature is obtained；Determine change rate section locating for the change rate；According to the change rate intervals control heat exchanger valve aperture and/or the running frequency of the compressor.The technical solution according to the change rate heat exchanging device valve opening of delivery temperature and/or the running frequency of compressor by being adjusted; effectively reduce the protection machine stop times of heat pump unit; the service life for extending compressor improves the operational reliability of heat pump unit.
Description
Technical field
The present invention relates to control technology fields, and in particular to a kind of heat pump unit adjusting method, device and air-conditioning.
Background technique
Now with getting worse for problem of environmental pollution, people increasingly pay close attention to the low-temperature heating mode of environmental protection, with
Low-temperature air source heat pump technology graduallys mature, and is just becoming the mode of substitution coal stove heating and central heating most energy-saving and environmental protection.
Net for air-source heat pump units constitutes closed system by evaporator, condenser, compressor, the big main component of heat exchanger valve four, in
It is filled with suitable working medium.Unit operation basic principle foundation is inverse card circulation theory: liquid refrigerant is first in evaporator interior suction
Receive air in heat and evaporate to form steam (vaporization), the latent heat of vaporization as recycled heat, and after through compressor compresses at
High temperature and high pressure gas, into condenser in be condensed into liquid (liquefaction) and the heat of absorption issued and need in the water that heats, liquid
Working medium comes back in heat exchanger valve after heat exchanger valve decompressional expansion, absorbs heat of vaporization and completes a circulation, such as
This is reciprocal, constantly absorbs the heat of cold temperature source and exports into the water heated, until reaching predetermined temperature.
In practical applications, high temperature protection can be all arranged in net for air-source heat pump units, such as super in the delivery temperature of compressor
When crossing scheduled maximum temperature, net for air-source heat pump units stoppage protection is controlled, to avoid excessively high temperature damage unit, but this
Kind of control mode often leads to that compressor emergency shutdown number is excessive, and unit operational reliability is low, and shutting down each time all can be to entire empty
Air supply heat pump unit brings certain damage, shortens the service life of unit.
Therefore, the stoppage protection number of heat pump unit how is reduced, and then extends the service life of unit, improves unit
Reliability becomes a technical problem urgently to be resolved.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that the stoppage protection number of heat pump unit is excessive, reliability is low, and
And the service life of unit can be shortened.
In view of this, the first aspect of the embodiment of the present invention provides a kind of heat pump unit adjusting method, comprising: obtain pressure
The delivery temperature of contracting machine；Judge whether the delivery temperature in the first preset duration is all larger than preset temperature；If the exhaust
Temperature is all larger than the preset temperature in first preset duration, obtains the change rate of the delivery temperature；Described in determination
Change rate section locating for change rate；According to the change rate intervals control heat exchanger valve aperture and/or the compressor
Running frequency.
Preferably, the operation according to the change rate intervals control heat exchanger valve aperture and/or the compressor
Frequency includes: the first regulated value that the heat exchanger valve aperture is obtained according to the change rate section；It is adjusted according to described first
Section value carries out Primary regulation to the heat exchanger valve aperture.
Preferably, the operation according to the change rate intervals control heat exchanger valve aperture and/or the compressor
Frequency further include: after the second preset duration, the heat exchanger valve is obtained according to the current change rate section of the delivery temperature
Door the second regulated value of aperture and/or the running frequency regulated value of the compressor；According to second regulated value and the fortune
Line frequency regulated value carries out Secondary Control to the running frequency of the heat exchanger valve aperture and/or the compressor.
Preferably, it is described according to first regulated value to the heat exchanger valve aperture carry out Primary regulation include: institute
State change rate section be the interconversion rate be greater than 1.5 DEG C/sec when, first regulated value is within the scope of 15 steps~30 steps, with institute
It states the first regulated value and increases the heat exchanger valve aperture；Or the range that the change rate section is 1 DEG C/sec~1.5 DEG C/sec
When, first regulated value increases the heat exchanger valve aperture within the scope of 6 steps~12 steps, with first regulated value；Or
When the range that the change rate section is 0.5 DEG C/sec~1 DEG C/sec, first regulated value is within the scope of 4 steps~6 steps, with institute
It states the first regulated value and increases the heat exchanger valve aperture；Or the range that the change rate section is 0.3 DEG C/sec~0.5 DEG C/sec
When, first regulated value increases the heat exchanger valve aperture within the scope of 2 steps~4 steps, with first regulated value；Or institute
When to state change rate section be 0 DEG C/sec~0.3 DEG C/sec of range, judge the change rate whether in 40 seconds 0 DEG C/sec~
In the range of 0.3 DEG C/sec, if the change rate in 40 seconds in the range of 0 DEG C/sec~0.3 DEG C/sec, described first adjusts
Section value increases the heat exchanger valve aperture within the scope of 1 step~3 steps, with first regulated value.
Preferably, the running frequency according to second regulated value to the compressor and/or the heat exchanger valve
Door aperture carry out Secondary Control include: the current change rate section be greater than 1.5 DEG C/sec when, second preset duration be 5
Second, second regulated value is within the scope of 15 steps~30 steps, and the running frequency regulated value is within the scope of 6Hz~10Hz, with institute
It states the second regulated value and increases the heat exchanger valve aperture, and reduce the operation of the compressor with the running frequency regulated value
Frequency；Or the current change rate section, when being 1 DEG C/sec~1.5 DEG C/sec of range, second preset duration is 5 seconds, institute
The second regulated value is stated within the scope of 6 steps~12 steps, the running frequency regulated value is adjusted within the scope of 3Hz~5Hz with described second
Section value increases the heat exchanger valve aperture, and the running frequency of the compressor is reduced with the running frequency regulated value；Or
When the current change rate section is 0.5 DEG C/sec~1 DEG C/sec of range, second preset duration is 10 seconds, described second
Regulated value increases the heat exchanger valve aperture within the scope of 8 steps~12 steps, with second regulated value；Or the current variation
When the range that rate section is 0.3 DEG C/sec~0.5 DEG C/sec, second preset duration is 20 seconds, and second regulated value is in 2 steps
Within the scope of~4 steps, the heat exchanger valve aperture is increased with second regulated value.
A kind of heat pump unit regulating device is provided according to a second aspect of the embodiments of the present invention, comprising: first obtains mould
Block obtains the delivery temperature of compressor；Judgment module, for judge the delivery temperature whether in the first preset duration it is big
In preset temperature；Second obtains module, if being all larger than in first preset duration for the delivery temperature described default
Temperature obtains the change rate of the delivery temperature；Determining module, for determining change rate section locating for the change rate；It adjusts
Module is saved, for the running frequency according to the change rate intervals control heat exchanger valve aperture and/or the compressor.
Preferably, the adjustment module includes: first acquisition unit, for changing according to the acquisition of the change rate section
First regulated value of hot device valve opening；First adjusts unit, is used for according to first regulated value to the heat exchanger valve
Aperture carries out Primary regulation.
Preferably, the adjustment module further include: second acquisition unit is used for after the second preset duration, according to described
The current change rate section of delivery temperature obtains the second regulated value of the heat exchanger valve aperture and/or the fortune of the compressor
Line frequency regulated value；Second adjusts unit, for being changed according to second regulated value and the running frequency regulated value described
Hot device valve opening and/or the running frequency of the compressor carry out Secondary Control.
Preferably, the first adjusting unit includes: the first increase subelement, is the change for the change rate section
When changing rate greater than 1.5 DEG C/sec, first regulated value is within the scope of 15 steps~30 steps, described in first regulated value increase
Heat exchanger valve aperture；Second increases subelement, when for the change rate section being 1 DEG C/sec~1.5 DEG C/sec of range, institute
The first regulated value is stated within the scope of 6 steps~12 steps, the heat exchanger valve aperture is increased with first regulated value；Third increases
When subelement for the change rate section is 0.5 DEG C/sec~1 DEG C/sec of range, first regulated value is in 4 steps~6 steps
In range, the heat exchanger valve aperture is increased with first regulated value；4th increases subelement, is used for the change rate area
Between when being 0.3 DEG C/sec~0.5 DEG C/sec of range, first regulated value is adjusted within the scope of 2 steps~4 steps with described first
Value increases the heat exchanger valve aperture；5th increases subelement, is 0 DEG C/sec~0.3 DEG C/sec for the change rate section
Range when, judge the change rate whether in 40 seconds in the range of 0 DEG C/sec~0.3 DEG C/sec, if the change rate
In 40 seconds in the range of 0 DEG C/sec~0.3 DEG C/sec, first regulated value is within the scope of 1 step~3 steps, with described
One regulated value increases the heat exchanger valve aperture.
Preferably, the second adjusting unit includes: the first regulator unit, is big for the current change rate section
When 1.5 DEG C/sec, second preset duration is 5 seconds, and second regulated value is within the scope of 15 steps~30 steps, the operation
Frequency adjustment value increases the heat exchanger valve aperture within the scope of 6Hz~10Hz, with second regulated value, and with the fortune
Line frequency regulated value reduces the running frequency of the compressor；Second regulator unit is 1 for the current change rate section
DEG C/sec~1.5 DEG C/sec of range when, second preset duration is 5 seconds, and second regulated value is in 6 steps~12 step ranges
Interior, the running frequency regulated value increases the heat exchanger valve aperture within the scope of 3Hz~5Hz, with second regulated value,
And the running frequency of the compressor is reduced with the running frequency regulated value；Third regulator unit is used for the current change
When the range that rate section is 0.5 DEG C/sec~1 DEG C/sec, second preset duration is 10 seconds, and second regulated value is in 8 steps
Within the scope of~12 steps, the heat exchanger valve aperture is increased with second regulated value；4th regulator unit is worked as described
When the range that preceding change rate section is 0.3 DEG C/sec~0.5 DEG C/sec, second preset duration is 20 seconds, and described second is adjusted
Value increases the heat exchanger valve aperture within the scope of 2 steps~4 steps, with second regulated value.
A kind of air-conditioning is provided according to a third aspect of the embodiments of the present invention, the second aspect including such as embodiment of the present invention
And heat pump unit regulating device described in any one preferred embodiment of second aspect.
Technical solution of the present invention has the advantage that
It is pre- to continue first in the delivery temperature of compressor for heat pump unit adjusting method, device and air-conditioning provided by the invention
If duration is all larger than preset temperature, the change rate of the delivery temperature of real-time detection compressor, according to the variation where change rate
Rate section adjusts heat exchanger valve aperture in time, if the change rate of delivery temperature is also in identical after the second preset duration
Change rate section, then while adjusting heat exchanger valve aperture, cooperation adjust compressor running frequency, by compressor
Delivery temperature controls in normal operation range, avoids compressor emergency shutdown caused by high temperature protection, to avoid shutting down to compressor
Damage effectively reduce the protection machine stop times of heat pump unit compared with prior art, extend compressor use the longevity
Life, improves the operational reliability of heat pump unit.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a flow chart of the heat pump unit adjusting method of the embodiment of the present invention 1；
Fig. 2 is a schematic diagram of the heat pump unit of the embodiment of the present invention 1；
Fig. 3 is a block diagram of the heat pump unit regulating device of the embodiment of the present invention 2；
Fig. 4 is a block diagram of the air-conditioning of the embodiment of the present invention 3；
Appended drawing reference:
1- compressor, 2- are vented temperature sensing package, 3- four-way valve, 4- heat exchanger, 5- electric expansion valve, 6- package, 7- vapour-liquid point
From device.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " first ", " the
Two ", " third ", " the 4th " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
The present embodiment provides a kind of heat pump unit adjusting methods, can be used for temperature of the heat pump unit in high temperature protection engineering
It adjusts, the technical solution embodiment is described in detail by taking heat pump unit as shown in Figure 2 as an example below, as shown in Fig. 2, the heat pump
Unit includes: compressor 1, exhaust temperature sensing package 2, four-way valve 3, heat exchanger 4, electric expansion valve 5 (i.e. heat exchanger valve), package 6
With vapour liquid separator 7, as shown in Figure 1, the heat pump unit adjusting method includes the following steps:
S11: obtaining the delivery temperature of compressor 1, as shown in Fig. 2, row can be arranged by the exhaust ports in compressor 1
Gas temperature sensing package 2, to realize the delivery temperature for obtaining compressor 1 in real time.
S12: judge whether delivery temperature in the first preset duration is all larger than preset temperature.Herein the first preset duration and
Preset temperature can be set according to the actual motion environment of heat pump unit and user, such as if unit high temperature
Protecting temperature is 115 DEG C, then preset temperature can be set to 95 DEG C, just adjust in this way to it when delivery temperature reaches 95 DEG C
Section, so that avoiding it from reaching a high temperature protects 115 DEG C of temperature, also avoids compressor emergency shutdown, and correspondingly, the first preset duration can be with
It is set as 20 seconds, due to the influence of various factors in unit running process, delivery temperature will appear fluctuation, if row for 20 seconds
Temperature degree is both greater than 95 DEG C, then it was determined that delivery temperature is really to be greater than 95 DEG C, it is possible to reduce system erroneous judgement, raising are sentenced
The accuracy of disconnected result.
S13: if delivery temperature is all larger than preset temperature in the first preset duration, the change rate of delivery temperature is obtained.This
Place's change rate generally refers to advancing the speed for delivery temperature, specifically, when continuous 20s detects that delivery temperature is greater than 95 DEG C,
The delivery temperature that temperature sensing package 2 detects can be vented by real-time detection to calculate the exhaust in the change rate, such as record 5s
Temperature is respectively T1, T2, T3, T4, T5, then can use following formula calculate the change rate △ T of delivery temperature at this time for
△ T=(T5-T2)/3- (T4-T1)/3
S14: change rate section locating for change rate is determined.The change rate of delivery temperature has been divided into different variations herein
Rate section, needs according to the actual situation, and to guarantee that stablizing for heat pump unit exports as principle, different interconversion rate sections can be corresponded to
Different conciliation scheme, therefore, before adjusting, it is thus necessary to determine that the corresponding change rate section of the change rate, accurate change rate
Interval division improves the runnability of unit, and then the user experience is improved so that the scheme of conciliation more refines.
S15: according to 4 valve opening of change rate intervals control heat exchanger and/or the running frequency of compressor 1.I.e. in step
After S14 gets the corresponding change rate section of change rate, according to the corresponding conciliation scheme in the interconversion rate section come 4 valve of heat exchanging device
Door aperture and/or the running frequency of compressor 1 are adjusted, and then in the normal range by delivery temperature control.
As concrete implementation scheme, step S15 may include:
Step 1: the first regulated value of 4 valve opening of heat exchanger is obtained according to change rate section；According to the first regulated value pair
4 valve opening of heat exchanger carries out Primary regulation, only carries out the adjusting of 4 valve opening of heat exchanger herein, to guarantee that it is steady that unit has
Fixed output is principle, for the purpose of controlling delivery temperature in the range of unit normal operating temperature demand.It specifically can be with
Including following several situations:
1, when change rate section is that interconversion rate is greater than 1.5 DEG C/sec, the first regulated value is within the scope of 15 steps~30 steps, with the
One regulated value increases 4 valve opening of heat exchanger, for example when T > 1.5 DEG C/sec △, forced electronic expansion valve 5 opens big 20 step, with control
Delivery temperature processed is in the range of unit normal operating temperature demand.
2, when change rate section is 1 DEG C/sec~1.5 DEG C/sec of range, the first regulated value within the scope of 6 steps~12 steps, with
First regulated value increases 4 valve opening of heat exchanger, for example when T≤1.5 DEG C/sec 1 DEG C/sec < △, forced electronic expansion valve 5 is opened
Big 10 step, to control delivery temperature in the range of unit normal operating temperature demand.
3, when change rate section is 0.5 DEG C/sec~1 DEG C/sec of range, the first regulated value within the scope of 4 steps~6 steps, with
First regulated value increases 4 valve opening of heat exchanger, for example, forced electronic expansion valve 5 is opened when T≤1 DEG C/sec 0.5 DEG C/sec < △
Big 5 step, to control delivery temperature in the range of unit normal operating temperature demand.
4, when change rate section is 0.3 DEG C/sec~0.5 DEG C/sec of range, the first regulated value within the scope of 2 steps~4 steps,
Increase 4 valve opening of heat exchanger with the first regulated value, for example, when T≤0.5 DEG C/sec 0.3 DEG C/sec < △, forced electronic expansion
Valve 5 opens big 3 step, to control delivery temperature in the range of unit normal operating temperature demand.
5, when change rate section is 0 DEG C/sec~0.3 DEG C/sec of range, judge change rate whether in 40 seconds 0 DEG C/
Second~0.3 DEG C/sec in the range of, if change rate in 40 seconds in the range of 0 DEG C/sec~0.3 DEG C/sec, the first regulated value
Within the scope of 1 step~3 steps, 4 valve opening of heat exchanger is increased with the first regulated value, such as when T≤0.3 DEG C/sec 0 DEG C/sec < △
When, unit can be controlled to carry out the adjusting of electric expansion valve 5 and control by the normal degree of superheat, and maintain 40s to continue to monitor, if
Still T≤0.3 DEG C/sec 0 DEG C/sec < △ is monitored after 40s, then forces to open big 2 step of valve, and continue to hold under subsequent same case
This movement of row, to control delivery temperature in the range of unit normal operating temperature demand.
It should be noted that if realizing control delivery temperature in unit normal operating temperature demand by Primary regulation
In the range of, then without being adjusted again, if after Primary regulation, not can control delivery temperature in unit normal operating temperature
In the range of demand, then can enter step two described in Secondary Control scheme.
As concrete implementation scheme, step S15 can also include: step 2: after the second preset duration, according to exhaust
The running frequency of the second regulated value and/or compressor 1 that the current change rate section of temperature obtains 4 valve opening of heat exchanger is adjusted
Value；It is carried out according to the second regulated value and 4 valve opening of running frequency regulated value heat exchanging device and/or the running frequency of compressor 1
Secondary Control.When not can control delivery temperature in the range of unit normal operating temperature demand herein is in Primary regulation,
Secondary Control is carried out, equally, Secondary Control is also to guarantee that unit has stable output as principle, to control delivery temperature in machine
For the purpose of in the range of group normal operating temperature demand.Specifically may include following several situations:
A, current change rate section be greater than 1.5 DEG C/sec when, the second preset duration be 5 seconds, the second regulated value 15 steps~
Within the scope of 30 steps, running frequency regulated value increases 4 valve opening of heat exchanger within the scope of 6Hz~10Hz, with the second regulated value, and
After Primary regulation with the running frequency of running frequency regulated value reduction compressor 1, such as under this condition, 5s detection is maintained,
If detecting T > 1.5 DEG C/sec △ after 5s, illustrate that Primary regulation fails to reach the normal purpose of control delivery temperature recurrence, then
Continue to force to open big 5 aperture of electric expansion valve, 20 step, while reducing by 1 running frequency 6Hz of compressor, to control delivery temperature in machine
In the range of group normal operating temperature demand.
B, when the range that current change rate section is 1 DEG C/sec~1.5 DEG C/sec, the second preset duration is 5 seconds, and second is adjusted
For value within the scope of 6 steps~12 steps, running frequency regulated value increases 4 valve of heat exchanger within the scope of 3Hz~5Hz, with the second regulated value
Door aperture, and the running frequency of compressor 1 is reduced with running frequency regulated value, such as after Primary regulation under this condition, dimension
5s detection is held, if detecting T≤1.5 DEG C/sec 1 DEG C/sec < △ after 5s, illustrates that Primary regulation fails to reach control delivery temperature
Normal purpose is returned, then continues to force to open big 10 step of valve opening, while reducing by 1 running frequency 3Hz of compressor, to control exhaust
Temperature is in the range of unit normal operating temperature demand.
C, when the range that current change rate section is 0.5 DEG C/sec~1 DEG C/sec, the second preset duration is 10 seconds, and second adjusts
Section value increases 4 valve opening of heat exchanger, such as primary tune under this condition within the scope of 8 steps~12 steps, with the second regulated value
After section, 10s detection is maintained, if detecting T≤1 DEG C/sec 0.5 DEG C/sec < △ after 10s, illustrates that Primary regulation fails to reach control
Delivery temperature returns normal purpose, then only continues to force to open big 10 step of valve opening.
D, when current change rate section is 0.3 DEG C/sec~0.5 DEG C/sec of range, the second preset duration is 20 seconds, second
Regulated value increases 4 valve opening of heat exchanger, such as primary tune under this condition within the scope of 2 steps~4 steps, with the second regulated value
After section, 20s detection is maintained, if detecting T≤0.5 DEG C/sec 0.3 DEG C/sec < △ after 20s, illustrates that Primary regulation fails to reach control
Delivery temperature processed returns normal purpose, then only continues to force to open big 3 step of valve opening.
It should be noted that the regulation scheme of the above each case can all recycle execution, the number for recycling execution can root
It depending on actual conditions, for example adjusts 1 running frequency of compressor and at most executes 3 times, electric expansion valve 5 is adjusted until maximum is opened
Degree, if the intermediate continuous 10s of appearance detects that delivery temperature is more than 115 DEG C, compressor emergency shutdown protection, to avoid unit burning
It is bad.When T < 0 DEG C/sec △, unit electric expansion valve 5 maintains current aperture and does not allow to turn down, until exiting exhaust protection.
It is equal to continue the first preset duration in the delivery temperature of compressor 1 for heat pump unit adjusting method provided in this embodiment
When greater than preset temperature, the change rate of the delivery temperature of real-time detection compressor 1, according to where change rate change rate section and
When adjust 4 valve opening of heat exchanger, if the change rate of delivery temperature is also in identical change rate after the second preset duration
Section, then while adjusting 4 valve opening of heat exchanger, cooperation adjusts the running frequency of compressor 1, by the exhaust of compressor 1
Temperature controls in normal operation range, compressor emergency shutdown caused by high temperature protection is avoided, to avoid shutting down the damage to compressor 1
Evil, compared with prior art, effectively reduces the protection machine stop times of heat pump unit, extends the service life of compressor 1, mention
The high operational reliability of heat pump unit.
Embodiment 2
A kind of heat pump unit regulating device is present embodiments provided, can be used for the control of heat pump unit delivery temperature, below
The technical solution embodiment is described in detail by taking heat pump unit as shown in Figure 2 as an example, as shown in Fig. 2, the heat pump unit includes:
Compressor 1, exhaust temperature sensing package 2, four-way valve 3, heat exchanger 4, electric expansion valve 5, package 6 and vapour liquid separator 7, as shown in figure 3,
The heat pump unit regulating device includes the first acquisition module 31, the acquisition of judgment module 32, second module 33, determining module 34 and adjusts
Module 35 is saved, each functions of modules is as follows:
First obtain module 31, obtain compressor 1 delivery temperature, referring specifically in embodiment 1 to the detailed of step S11
Description.
Judgment module 32, it is specific to join for judging whether delivery temperature in the first preset duration is all larger than preset temperature
See in embodiment 1 to the detailed description of step S12.
Second obtains module 33, if being all larger than preset temperature in the first preset duration for delivery temperature, obtains exhaust
The change rate of temperature, referring specifically in embodiment 1 to the detailed description of step S13.
Determining module 34, for determining change rate section locating for change rate, referring specifically in embodiment 1 to step S14
Detailed description.
Adjustment module 35, for the operation frequency according to 4 valve opening of change rate intervals control heat exchanger and/or compressor 1
Rate.Referring specifically in embodiment 1 to the detailed description of step S15.
As a preferred embodiment, adjustment module 35 includes: first acquisition unit 351, for being obtained according to change rate section
Take the first regulated value of 4 valve opening of heat exchanger；First adjusts unit 352, for according to 4 valve of the first regulated value heat exchanging device
Aperture carries out Primary regulation.Referring specifically to the correlation detailed description in embodiment 1.
As a preferred embodiment, adjustment module 35 further include: second acquisition unit 353, for through the second preset duration
Afterwards, the second regulated value and/or compressor 1 of 4 valve opening of heat exchanger are obtained according to the current change rate section of delivery temperature
Running frequency regulated value；Second adjusts unit 354, for according to 4 valve of the second regulated value and running frequency regulated value heat exchanging device
Door aperture and/or the running frequency of compressor 1 carry out Secondary Control.Referring specifically to the correlation detailed description in embodiment 1.
As a preferred embodiment, the first adjusting unit 352 includes: the first increase subelement, is for change rate section
When interconversion rate is greater than 1.5 DEG C/sec, the first regulated value increases 4 valve of heat exchanger within the scope of 15 steps~30 steps, with the first regulated value
Aperture；Second increases subelement, and when for change rate section being 1 DEG C/sec~1.5 DEG C/sec of range, the first regulated value is in 6 steps
Within the scope of~12 steps, 4 valve opening of heat exchanger is increased with the first regulated value；Third increases subelement, is for change rate section
When 0.5 DEG C/sec~1 DEG C/sec of range, the first regulated value increases 4 valve of heat exchanger within the scope of 4 steps~6 steps, with the first regulated value
Door aperture；4th increases subelement, and when for change rate section being 0.3 DEG C/sec~0.5 DEG C/sec of range, the first regulated value exists
Within the scope of 2 steps~4 steps, 4 valve opening of heat exchanger is increased with the first regulated value；5th increases subelement, is used for change rate section
When for 0 DEG C/sec~0.3 DEG C/sec of range, judge change rate whether in 40 seconds in 0 DEG C/sec~0.3 DEG C/sec of range
It is interior, if change rate in 40 seconds in the range of 0 DEG C/sec~0.3 DEG C/sec, the first regulated value within the scope of 1 step~3 steps, with
First regulated value increases 4 valve opening of heat exchanger.Referring specifically to the correlation detailed description in embodiment 1.
As a preferred embodiment, the second adjusting unit 354 includes: the first regulator unit, is used for current change rate area
Between for greater than 1.5 DEG C/sec when, the second preset duration be 5 seconds, the second regulated value is within the scope of 15 steps~30 steps, running frequency tune
Section value increases 4 valve opening of heat exchanger within the scope of 6Hz~10Hz, with the second regulated value, and with the reduction of running frequency regulated value
The running frequency of compressor 1；Second regulator unit, the range for being 1 DEG C/sec~1.5 DEG C/sec for current change rate section
When, the second preset duration is 5 seconds, and the second regulated value is within the scope of 6 steps~12 steps, and running frequency regulated value is in 3Hz~5Hz range
It is interior, 4 valve opening of heat exchanger is increased with the second regulated value, and the running frequency of compressor 1 is reduced with running frequency regulated value；The
When three regulator units for current change rate section are 0.5 DEG C/sec~1 DEG C/sec of range, the second preset duration is 10 seconds,
Second regulated value increases 4 valve opening of heat exchanger within the scope of 8 steps~12 steps, with the second regulated value；4th regulator unit is used
When current change rate section is 0.3 DEG C/sec~0.5 DEG C/sec of range, the second preset duration is 20 seconds, and the second regulated value is 2
It walks within the scope of~4 steps, 4 valve opening of heat exchanger is increased with the second regulated value.It is retouched in detail referring specifically to the correlation in embodiment 1
It states.
It is equal to continue the first preset duration in the delivery temperature of compressor 1 for heat pump unit regulating device provided in this embodiment
When greater than preset temperature, the change rate of the delivery temperature of real-time detection compressor 1, according to where change rate change rate section and
When adjust 4 valve opening of heat exchanger, if the change rate of delivery temperature is also in identical change rate after the second preset duration
Section, then while adjusting 4 valve opening of heat exchanger, cooperation adjusts the running frequency of compressor 1, by the exhaust of compressor 1
Temperature controls in normal operation range, compressor emergency shutdown caused by high temperature protection is avoided, to avoid shutting down the damage to compressor 1
Evil, compared with prior art, effectively reduces the protection machine stop times of heat pump unit, extends the service life of compressor 1, mention
The high operational reliability of heat pump unit.
Embodiment 3
A kind of air-conditioning 40 is present embodiments provided, can be used for the control of heat pump unit delivery temperature, as shown in figure 4, including
Such as the heat pump unit regulating device of embodiment 2, therefore all beneficial effects of the heat pump unit regulating device with embodiment 2.
Air-conditioning 40 provided in this embodiment is held by taking heat pump unit as shown in Figure 2 as an example in the delivery temperature of compressor 1
When continuous first preset duration is all larger than preset temperature, the change rate of the delivery temperature of real-time detection compressor 1, according to change rate institute
Change rate section adjust 4 valve opening of heat exchanger in time, if the change rate of delivery temperature is also after the second preset duration
In identical change rate section, then while adjusting 4 valve opening of heat exchanger, cooperation adjusts the running frequency of compressor 1,
The delivery temperature of compressor 1 is controlled in normal operation range, compressor emergency shutdown caused by high temperature protection is avoided, to avoid stopping
Damage of the machine to compressor 1 effectively reduces the protection machine stop times of heat pump unit, extends compression compared with prior art
The service life of machine 1 improves the operational reliability of heat pump unit.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (9)
1. a kind of heat pump unit adjusting method characterized by comprising
Obtain the delivery temperature of compressor；
Judge whether the delivery temperature in the first preset duration is all larger than preset temperature；
If the delivery temperature is all larger than the preset temperature in first preset duration, the change of the delivery temperature is obtained
Rate；
Determine change rate section locating for the change rate；
According to the change rate intervals control heat exchanger valve aperture and/or the running frequency of the compressor；
The running frequency according to the change rate intervals control heat exchanger valve aperture and/or the compressor includes:
The first regulated value of the heat exchanger valve aperture is obtained according to the change rate section；
Primary regulation is carried out to the heat exchanger valve aperture according to first regulated value；
It is described to include: to heat exchanger valve aperture progress Primary regulation according to first regulated value
The change rate section be interconversion rate be greater than 1.5 DEG C/sec when, first regulated value within the scope of 15 steps~30 steps, with
First regulated value increases the heat exchanger valve aperture.
2. heat pump unit adjusting method according to claim 1, which is characterized in that described according to change rate section tune
Save the running frequency of heat exchanger valve aperture and/or the compressor, further includes:
After the second preset duration, the heat exchanger valve aperture is obtained according to the current change rate section of the delivery temperature
The running frequency regulated value of second regulated value and/or the compressor；
According to second regulated value and the running frequency regulated value to the heat exchanger valve aperture and/or the compressor
Running frequency carry out Secondary Control.
3. heat pump unit adjusting method according to claim 1 or 2, which is characterized in that described to be adjusted according to described first
Value carries out Primary regulation to the heat exchanger valve aperture, further includes:
When the change rate section is 1 DEG C/sec~1.5 DEG C/sec of range, first regulated value within the scope of 6 steps~12 steps,
Increase the heat exchanger valve aperture with first regulated value；Or
When the change rate section is 0.5 DEG C/sec~1 DEG C/sec of range, first regulated value within the scope of 4 steps~6 steps,
Increase the heat exchanger valve aperture with first regulated value；Or
When the range that the change rate section is 0.3 DEG C/sec~0.5 DEG C/sec, first regulated value is in 2 steps~4 step ranges
It is interior, the heat exchanger valve aperture is increased with first regulated value；Or
When the change rate section is 0 DEG C/sec~0.3 DEG C/sec of range, judge the change rate whether in 40 seconds 0
DEG C/sec~0.3 DEG C/sec in the range of, if the change rate in 40 seconds in the range of 0 DEG C/sec~0.3 DEG C/sec, it is described
First regulated value increases the heat exchanger valve aperture within the scope of 1 step~3 steps, with first regulated value.
4. heat pump unit adjusting method according to claim 2, which is characterized in that it is described according to second regulated value and
The running frequency regulated value carries out Secondary Control to the running frequency of the compressor and/or the heat exchanger valve aperture
Include:
When the current change rate section is greater than 1.5 DEG C/sec, second preset duration is 5 seconds, and second regulated value exists
Within the scope of 15 steps~30 steps, the running frequency regulated value is within the scope of 6Hz~10Hz, described in second regulated value increase
Heat exchanger valve aperture, and reduce with the running frequency regulated value running frequency of the compressor；Or
When the current change rate section is 1 DEG C/sec~1.5 DEG C/sec of range, second preset duration is 5 seconds, described the
Two regulated values are within the scope of 6 steps~12 steps, and the running frequency regulated value is within the scope of 3Hz~5Hz, with second regulated value
Increase the heat exchanger valve aperture, and reduces the running frequency of the compressor with the running frequency regulated value；Or
When the range that the current change rate section is 0.5 DEG C/sec~1 DEG C/sec, second preset duration is 10 seconds, described
Second regulated value increases the heat exchanger valve aperture within the scope of 8 steps~12 steps, with second regulated value；Or
When the range that the current change rate section is 0.3 DEG C/sec~0.5 DEG C/sec, second preset duration is 20 seconds, institute
The second regulated value is stated within the scope of 2 steps~4 steps, the heat exchanger valve aperture is increased with second regulated value.
5. a kind of heat pump unit regulating device characterized by comprising
First obtains module, obtains the delivery temperature of compressor；
Judgment module, for judging whether the delivery temperature in the first preset duration is all larger than preset temperature；
Second acquisition module obtains if being all larger than the preset temperature in first preset duration for the delivery temperature
Take the change rate of the delivery temperature；
Determining module, for determining change rate section locating for the change rate；
Adjustment module, for the operation frequency according to the change rate intervals control heat exchanger valve aperture and/or the compressor
Rate；
The adjustment module includes:
First acquisition unit, for obtaining the first regulated value of the heat exchanger valve aperture according to the change rate section；
First adjusts unit, for carrying out Primary regulation to the heat exchanger valve aperture according to first regulated value；
Described first, which adjusts unit, includes:
First increases subelement, and when being greater than 1.5 DEG C/sec for the change rate section for interconversion rate, first regulated value exists
Within the scope of 15 steps~30 steps, the heat exchanger valve aperture is increased with first regulated value.
6. heat pump unit regulating device according to claim 5, which is characterized in that the adjustment module further include:
Second acquisition unit, for obtaining institute according to the current change rate section of the delivery temperature after the second preset duration
State the second regulated value of heat exchanger valve aperture and/or the running frequency regulated value of the compressor；
Second adjusts unit, for being opened according to second regulated value and the running frequency regulated value the heat exchanger valve
The running frequency of degree and/or the compressor carries out Secondary Control.
7. heat pump unit regulating device according to claim 5 or 6, which is characterized in that the first adjusting unit also wraps
It includes:
Second increases subelement, and when for the change rate section being 1 DEG C/sec~1.5 DEG C/sec of range, described first is adjusted
Value increases the heat exchanger valve aperture within the scope of 6 steps~12 steps, with first regulated value；
Third increases subelement, and when for the change rate section being 0.5 DEG C/sec~1 DEG C/sec of range, described first is adjusted
Value increases the heat exchanger valve aperture within the scope of 4 steps~6 steps, with first regulated value；
4th increases subelement, and when for the change rate section being 0.3 DEG C/sec~0.5 DEG C/sec of range, described first is adjusted
Section value increases the heat exchanger valve aperture within the scope of 2 steps~4 steps, with first regulated value；
5th increases subelement, when for the change rate section being 0 DEG C/sec~0.3 DEG C/sec of range, judges the variation
Rate whether in 40 seconds in the range of 0 DEG C/sec~0.3 DEG C/sec, if the change rate in 40 seconds 0 DEG C/sec~
In the range of 0.3 DEG C/sec, first regulated value increases the heat exchange within the scope of 1 step~3 steps, with first regulated value
Device valve opening.
8. heat pump unit regulating device according to claim 6, which is characterized in that described second, which adjusts unit, includes:
First regulator unit, when for the current change rate section for greater than 1.5 DEG C/sec, second preset duration is 5
Second, second regulated value is within the scope of 15 steps~30 steps, and the running frequency regulated value is within the scope of 6Hz~10Hz, with institute
It states the second regulated value and increases the heat exchanger valve aperture, and reduce the operation of the compressor with the running frequency regulated value
Frequency；
When second regulator unit for the current change rate section is 1 DEG C/sec~1.5 DEG C/sec of range, described second
Preset duration is 5 seconds, and second regulated value is within the scope of 6 steps~12 steps, and the running frequency regulated value is in 3Hz~5Hz model
In enclosing, the heat exchanger valve aperture is increased with second regulated value, and the pressure is reduced with the running frequency regulated value
The running frequency of contracting machine；
When third regulator unit for the current change rate section is 0.5 DEG C/sec~1 DEG C/sec of range, described second
Preset duration is 10 seconds, and second regulated value increases the heat exchanger within the scope of 8 steps~12 steps, with second regulated value
Valve opening；
When 4th regulator unit for the current change rate section is 0.3 DEG C/sec~0.5 DEG C/sec of range, described the
Two preset durations are 20 seconds, and second regulated value increases the heat exchange within the scope of 2 steps~4 steps, with second regulated value
Device valve opening.
9. a kind of air-conditioning characterized by comprising the heat pump unit regulating device as described in any one of claim 5 to 8.
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| CN107367012B (en) * | 2017-06-06 | 2020-02-11 | 珠海格力电器股份有限公司 | High-temperature-resistant protection method, protection device and protection system for air conditioning system |
| CN107940694A (en) * | 2017-11-16 | 2018-04-20 | 珠海格力电器股份有限公司 | The exhaust protection control method and system of a kind of air conditioner |
| CN108800432A (en) * | 2018-06-25 | 2018-11-13 | 重庆美的通用制冷设备有限公司 | The control method and device of the anti-overheat of compressor electric motor |
| CN110057060B (en) * | 2019-03-19 | 2021-07-27 | 重庆海尔空调器有限公司 | Control method for frequency adjustment of air conditioner compressor and air conditioner |
| CN110195925A (en) * | 2019-05-31 | 2019-09-03 | 宁波奥克斯电气股份有限公司 | A kind of control method and air conditioner of low-temperature air source heat pump spray enthalpy valve |
| CN110410972A (en) * | 2019-07-25 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | A kind of control method, device and the air conditioner of air conditioner delivery temperature |
| CN110686356A (en) * | 2019-09-23 | 2020-01-14 | 珠海格力电器股份有限公司 | Control method for preventing frequent shutdown of air conditioner, computer readable storage medium and air conditioner |
| CN110986333B (en) * | 2019-12-26 | 2021-12-21 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
| CN111380185B (en) * | 2020-03-27 | 2021-10-26 | 广东美的制冷设备有限公司 | Compressor exhaust temperature frequency limiting control method, air conditioner and readable storage medium |
| CN113834197B (en) * | 2020-06-08 | 2022-09-13 | 广东美的制冷设备有限公司 | Control method of air conditioner, terminal equipment and storage medium |
| CN112762582B (en) * | 2020-12-31 | 2022-12-23 | 佛山市顺德区美的电子科技有限公司 | Control method of air conditioner and air conditioner |
| CN113483455A (en) * | 2021-06-28 | 2021-10-08 | 宁波奥克斯电气股份有限公司 | High-voltage protection control method and device, air conditioner and computer readable storage medium |
| CN113587338B (en) * | 2021-06-28 | 2022-11-29 | 宁波奥克斯电气股份有限公司 | Compressor exhaust temperature control method and device and air conditioner |
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