CN109682022A - A kind of expansion valve control method and device, air-conditioning system - Google Patents
A kind of expansion valve control method and device, air-conditioning system Download PDFInfo
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- CN109682022A CN109682022A CN201811603443.4A CN201811603443A CN109682022A CN 109682022 A CN109682022 A CN 109682022A CN 201811603443 A CN201811603443 A CN 201811603443A CN 109682022 A CN109682022 A CN 109682022A
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- expansion valve
- closed state
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- opening value
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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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
- 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
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Analytical Chemistry (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of expansion valve control method and device, air-conditioning system, is related to air-conditioning technical field, under the premise of not influencing air-conditioning system and working normally, to reduce the problem of internal part of expansion valve is by impurity damage contained by refrigerant.The expansion valve control method includes: the operation and control information for receiving indoor units；Whether it is in closed state according to the expansion valve that the operation and control information of indoor units analyzes the indoor unit contained by indoor units；If so, opening value of the control in the expansion valve to closed state is equal to K1, so that the impurity of the inner passage in the expansion valve to closed state is taken out of from expansion valve by refrigerant；The opening value in the expansion valve to closed state is controlled from K1It is changed into Koff, so that being closed in the expansion valve to closed state.The expansion control valve device applies above-mentioned expansion valve control method.Expansion valve control method and device provided by the invention, air-conditioning system are in indoor units.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of expansion valve control methods and device, air-conditioning system.
Background technique
With multi-connected machine market flourish, domestic multi-connection air conditioner in average family using more and more common.
Multi-gang air-conditioner is that a kind of unit adaptability is good, the wide air-conditioning system of cooling and warming temperature range, and design freedom is high, installation
It is convenient with charging, can the effectively save energy, meet requirement of the consumer to comfort, convenience etc..
Existing multi-gang air-conditioner includes outdoor unit and indoor units, expansion entrained by the heat exchanger that indoor units contain
In the lesser situation of the opening ratio of valve, the impurity that refrigerant contains is easy to be stuck in the inner passage of expansion valve, when expansion valve closes
When closing, the internal parts such as needle, the valve seat in the impurity damage expansion valve in expansion valve are stuck in, expansion valve is caused to go wrong,
So that expansion valve is not closed completely.For this problem, high density filter net can be set in the entrance and exit of expansion valve, will freezes
Impurities contained by agent avoid the impurity contained by refrigerant from entering in expansion valve, but this but also expansion valve crushing
Increase, causes the system pressure of multi-gang air-conditioner abnormal, so that multi-gang air-conditioner can not work normally.
Summary of the invention
The purpose of the present invention is to provide a kind of expansion valve control method and devices, air-conditioning system, not influence air-conditioning
Under the premise of system worked well, the problem of internal part of expansion valve is by impurity damage contained by refrigerant is reduced.
To achieve the goals above, the present invention provides a kind of expansion valve control method, which includes:
Receive the operation and control information of indoor units；
Whether it is according to the expansion valve that the operation and control information of indoor units analyzes the indoor unit contained by indoor units
To closed state；
If the expansion valve of the indoor unit contained by the indoor units is in closed state, control is in closed state
Expansion valve opening value be equal to K1, so that the impurity of the inner passage in the expansion valve to closed state is by refrigerant from swollen
It is taken out of in swollen valve；
The opening value in the expansion valve to closed state is controlled from K1It is changed into Koff, so that in closed state
Expansion valve is closed, KoffFor the opening value of the expansion valve of characterization closed state.
Compared with prior art, in expansion valve control method provided by the invention, control is in the expansion to closed state
Before valve is closed, opening value of the control in the expansion valve to closed state is equal to K1, so that in the expansion valve to closed state
The impurity of inner passage taken out of from expansion valve by refrigerant, to guarantee that there is no the miscellaneous of delay for the inner passage of expansion valve
Matter, in this way when the closing of the expansion valve of closed state, there will be no the internal part of expansion valve occur contained by refrigerant
Impurity damage the problem of；Moreover, mode of the expansion valve control method provided by the invention only by control expansion valve opening
Avoid the internal part of expansion valve by the impurity damage contained by refrigerant, therefore, expansion valve control method provided by the invention
The internal part of expansion valve can be effectively prevent by the impurity contained by refrigerant in the case where guaranteeing that air-conditioning system works normally
Damage.
The present invention also provides a kind of expansion control valve device, which includes:
Receiving module, for receiving the operation and control information of indoor units；
Processing module, for analyzing the swollen of the indoor unit contained by indoor units according to the operation and control information of indoor units
Whether swollen valve is in closed state；
Control module is in when closed state for the expansion valve in the indoor unit contained by the indoor units, control
Opening value of the system in the expansion valve to closed state is equal to K1, so that the inner passage in the expansion valve to closed state
Impurity is taken out of from expansion valve by refrigerant；The opening value in the expansion valve to closed state is controlled from K1It is changed into Koff, make
It obtains and is closed in the expansion valve to closed state, KoffFor the opening value of the expansion valve of characterization closed state.
Compared with prior art, the beneficial effect and above-mentioned expansion valve controlling party of expansion control valve device provided by the invention
The beneficial effect of method is identical, and this will not be repeated here.
The embodiment of the invention also provides a kind of computer storage mediums, for storing one or more computer instructions,
The computer software instructions include for executing computer program designed by above-mentioned expansion valve control method.
Compared with prior art, the beneficial effect of computer storage medium provided by the invention and above-mentioned expansion valve controlling party
The beneficial effect of method is identical, and this will not be repeated here.
The present invention also provides a kind of air-conditioning system, which includes the control dress of expansion valve described in above-mentioned technical proposal
It sets.
Compared with prior art, the beneficial effect of air-conditioning system provided by the invention and above-mentioned expansion valve control method has
Beneficial effect is identical, and this will not be repeated here.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of existing expansion valve；
Fig. 2 is the flow chart one of expansion valve control method provided in an embodiment of the present invention；
Fig. 3 is the flowchart 2 of expansion valve control method provided in an embodiment of the present invention；
Fig. 4 is the flow chart 3 of expansion valve control method provided in an embodiment of the present invention；
Fig. 5 is the flow chart four of expansion valve control method provided in an embodiment of the present invention；
Fig. 6 is the flow chart five of expansion valve control method provided in an embodiment of the present invention；
Fig. 7 is expansion valve control principle drawing provided in an embodiment of the present invention；
Fig. 8 is the structural block diagram of expansion control valve device provided in an embodiment of the present invention；
Fig. 9 is the hardware architecture diagram of expansion valve controlling terminal provided in an embodiment of the present invention.
Appended drawing reference:
110- needle, 120- valve seat；
The inner passage 130-, 210- receiving module；
220- processing module, 230- control module；
300- expansion valve controlling terminal, 310- transceiver；
320- processor, 330- memory；
340- bus.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, expansion valve entrained by the heat exchanger that existing indoor units contain contains needle 110 and valve seat 120
The inner passage 130 constituted；The width of the inner passage of expansion valve can be controlled, by the aperture of variable expansion valve to control system
Flow of the cryogen in expansion valve.In the lesser situation of the opening ratio of expansion valve, the impurity that refrigerant contains is easy to be trapped in
In the inner passage of expansion valve, the impurity partial size Da contained by refrigerant is greater than the width D b of inner passage at this time.If expansion
When valve is closed, the internal parts such as needle 110, the valve seat 120 in the impurity damage expansion valve in expansion valve are trapped in, cause to expand
Valve goes wrong, so that expansion valve is not closed completely.When expansion valve is not closed completely, indoor unit can generate noise, and refrigeration effect
Difference, condensation problem are serious.
In view of the above-mentioned problems, as shown in Fig. 2, the embodiment of the invention provides a kind of expansion valve control method, the expansion valve
Control method includes:
Step S110: the operation and control information of indoor units is received；
Step S200: the expansion valve of the indoor unit contained by indoor units is analyzed according to the operation and control information of indoor units
Whether in closed state.
If the expansion valve of the indoor unit contained by indoor units is in closed state, illustrate that expansion valve needs to carry out zero point
Control executes step S500.Zero magnitude control herein refers to the control process for closing expansion valve.
If the expansion valve of the indoor unit contained by indoor units is not on to closed state, illustrate expansion valve do not need into
Row Zero magnitude control.
Step S500: opening value of the control in the expansion valve to closed state is equal to K1, so that in closed state
The impurity of inner passage of expansion valve taken out of from expansion valve by refrigerant.
Step S600: the opening value in the expansion valve to closed state is controlled from K1It is changed into Koff, so that in wait close
The expansion valve of closed state is closed, KoffFor characterize closed state expansion valve opening value, and in expansion valve to closed state
Opening value be equal to K1, so that in closed state expansion valve inner passage impurity by refrigerant the band from expansion valve
Out, therefore, Koff< K1。
Based on above-mentioned expansion valve control method it is found that control is before the expansion valve closing to closed state, control is in
The opening value of expansion valve to closed state is equal to K1, so that in closed state expansion valve inner passage be mingled with it is miscellaneous
Matter is taken out of from expansion valve by refrigerant, to guarantee impurity of the inner passage there is no delay of expansion valve, in this way when wait close
When the expansion valve of closed state is closed, there will be no the internal part for expansion valve occur asking by the impurity damage contained by refrigerant
Topic；Moreover, expansion valve control method provided in an embodiment of the present invention avoids expanding only by the mode of control expansion valve opening
The internal part of valve is by the impurity damage contained by refrigerant, and therefore, expansion valve control method provided in an embodiment of the present invention can
In the case where guaranteeing that air-conditioning system works normally, the internal part of expansion valve is effectively prevent to be damaged by the impurity contained by refrigerant
Wound.
In some embodiments, as shown in figure 3, being analyzed contained by indoor units according to the operation and control information of indoor units
The expansion valve of indoor unit whether be in and include: to closed state
Step S210: the shape of each indoor unit contained by indoor units is obtained according to the operation and control information of indoor units
State controls information；
Step S220: judge the type of the state control information of each indoor unit contained by indoor units；
In view of when any one indoor unit for being in refrigerating state is closed in indoor units, the expansion valve of the indoor unit is same
Sample can also close, and be based on this, if the state control information of at least one indoor unit contained by indoor units is that refrigeration closes control
Information processed executes step S230.
When being turned off in view of the indoor units for being in heating state all in indoor units, the expansion valve of these indoor units is all
It can close, be based on this, if the state control information of each indoor unit contained by indoor units is that control information is closed in heating,
Execute step S240.
When being closed in view of the indoor unit that indoor units inner part indoor unit is in heating state, in order to avoid these interiors
After organ closes, influence of the refrigerant therein to the indoor unit of normal work is based on this, if the part that indoor units contain is indoor
The state control information of machine is that control information is closed in heating, executes step S250.
Step S230: confirm that the expansion valve of at least one indoor unit is in closed state；
Step S240: the expansion valve of the indoor unit contained by confirmation indoor units is in closed state；
Step S250: the expansion valve of each indoor unit contained by confirmation indoor units is not on to closed state.
In some embodiments, as shown in Fig. 2, if the expansion valve of the indoor unit contained by indoor units is in shape to be closed
State, opening value of the control in the expansion valve to closed state are equal to K1Before, above-mentioned expansion valve control method further include:
Step 120: receiving the opening information in the expansion valve to closed state；Step S110 can be with step 120 simultaneously
It executes, can also need to execute step S120 using in when the opening information of the expansion valve of closed state.
Step 300: according to the opening information in the expansion valve to closed state, obtaining in the expansion to closed state
The inner passage width W of valve；
Step 400: whether judgement is more than or equal to predetermined width in the inner passage width W of the expansion valve to closed state
W0；
If the inner passage width W in the expansion valve to closed state is greater than predetermined width W0, illustrate that impurity can pass through
Inner passage in the expansion valve to closed state executes step S800 at this time.
If the inner passage width W in the expansion valve to closed state is less than or equal to predetermined width W0, illustrate refrigerant
Contained impurity can not by the inner passage in the expansion valve to closed state, so that impurity is trapped in inner passage,
If directly closed in the expansion valve to closed state, the internal parts such as needle, the valve seat of impurity damage expansion valve can be made,
Step S500 is executed at this time.
Step S800: opening value of the control in the expansion valve to closed state is equal to Koff, so that in closed state
Expansion valve close；Due to KoffThe opening value for the expansion valve being in off state, therefore, K0> Koff。
Illustratively, when the entrance of expansion valve is not equipped with filter screen, predetermined width W0It is critical equal to inner passage
Width；When the width of inner passage is less than or equal to the critical width of inner passage, the impurity contained by refrigerant can not pass through
Inner passage, when the width of inner passage is greater than the critical width of inner passage, the impurity contained by refrigerant can be by interior
Portion channel.
Illustratively, when the inlet of expansion valve is equipped with filter screen, predetermined width W0Equal to the hole for being in the filter screen
Diameter, at this point, setting the width of inner passage as Db, when the aperture of filter screen is Dc, and the impurity partial size contained by refrigerant is
Da.As Db >=Dc > Da, the impurity contained by refrigerant can not only pass through filter screen but also can be logical by the inside of expansion valve
Road；It, can not be from expansion valve although the impurity contained by refrigerant can enter expansion valve by filter screen as Dc > Da > Db
Inner passage is flowed through, and the impurity contained by refrigerant is caused to be trapped in the inner passage of expansion valve.Such as: the aperture of filter screen
When Dc=0.1mm~0.5mm, predetermined width W0=0.1mm~0.5mm.
Further, as the aperture Dc=0.145mm of filter screen, predetermined width W0=0.145mm, as shown in fig. 7, control is swollen
When the opening value of swollen valve makes the inner passage width W=0.145mm of expansion valve, the impurity contained by refrigerant can not be by swollen
The inner passage of swollen valve is needed at this time to the opening value for increasing expansion valve, so that the inner passage width of expansion valve is greater than
0.145mm, this makes it possible to make can be by the inner passage of expansion valve by the impurity of filter screen.
It is understood that when the opening value in the expansion valve to closed state is equal to K1When, in closed state
The impurity of inner passage of expansion valve taken out of from expansion valve by refrigerant；Therefore, when in the expansion valve to closed state
Opening value be equal to K1When, the inner passage width in the expansion valve to closed state is greater than impurity partial size in inner passage.
In some embodiments, as shown in figure 4, opening value of the control in the expansion valve to closed state is equal to K1Packet
It includes:
Step S510: it according to the opening information in the expansion valve to closed state, obtains in the swollen of closed state
The opening value K of swollen valve0；
Step S520: according to the opening value K in the expansion valve to closed state0With default opening value Ka, first is obtained
Aperture regulation parameter, Δ k1, Δ k1> Ka-K0；
Step S530: according to the first aperture regulation parameter, Δ k1With the opening value K in the expansion valve to closed state0Control
The opening value in the expansion valve to closed state is made from K0It is changed into K1, K1=K0+Δk1, Δ k1Size can be according to practical feelings
Condition setting.0 < Δ k1≤ 10pls, pls are the unit of aperture.When due to expansion valve control method provided in an embodiment of the present invention,
Essence, which is to ensure that in the case that the internal part of expansion valve is not damaged, closes expansion valve；That is, when carrying out expansion valve
When control, indoor unit where expansion valve is in the critical state of closing, if Δ k1It is excessive, a large amount of refrigerants can be made indoors
It is flowed through in the pipeline of machine, is unfavorable for closing expansion valve；As 0 < Δ k1When≤10pls, the impurity for being stuck in inner passage both can guarantee
It is taken out of by refrigerant, and can preferably reduce refrigerant and pass through from expansion valve, be then turned off expansion valve to facilitate.
When expansion valve closes tension, the difficulty that next time opens expansion valve is bigger, while also will affect making for expansion valve
With the service life, it is based on this, as shown in figure 5, above-mentioned control is in the opening value of the expansion valve to closed state from K1It is changed into KoffPacket
It includes:
Step S610: control is in the opening value of expansion valve to closed state from K1It is changed into Kmin, KminFor be in
The minimum aperture of the expansion valve of closed state, therefore, K1> Kmin。
Step S620: control is in the opening value of expansion valve to closed state from KminIt is changed into Koff, Kmin< Koff<
K1, Koff=Kmin+Δk2, Δ k2For the second aperture regulation parameter.Δ k herein2The elasticity that can be closed according to expansion valve requires to set
It is fixed.When the comparison for requiring expansion valve to close is tight, KoffIt is smaller, when the comparison for requiring expansion valve to close is loose, KoffIt is bigger.
But at least guarantee Δ k2> 0, it is inconvenient to open after closing to avoid expansion valve.
Similarly, as shown in fig. 6, the opening value that above-mentioned control is in the expansion valve to closed state is equal to KoffInclude:
Step S810: it according to the opening information in the expansion valve to closed state, obtains in the swollen of closed state
The opening value K of swollen valve0；
Step S820: control is in the opening value of expansion valve to closed state from K0It is changed into Kmin, KminFor be in
The minimum aperture of the expansion valve of closed state；
Step S830: control is in the opening value of expansion valve to closed state from KminIt is changed into Koff, Kmin< Koff<
K0, Koff=Kmin+Δk2, Δ k2For the second aperture regulation parameter.
In some embodiments, when indoor units Smaller load works, it is in expansion valve in the indoor unit of working condition
Aperture is generally smaller, and the impurity contained by refrigerant is easy to be trapped in the inside of expansion valve in the indoor unit for be in working condition
In channel；When the big load operation of indoor units, the aperture for being in expansion valve in the indoor unit of working condition is bigger, refrigerant
Contained impurity is not detained in the inner passage of the expansion valve.Based on this, as shown in Fig. 2, if in closed state
Expansion valve inner passage width W be greater than predetermined width W0, control the opening value in the expansion valve to closed state and be equal to
KoffBefore, above-mentioned expansion valve control method further include:
Step S130: the information on load of indoor units is received, above-mentioned steps S110 and/or step S120 can be with steps
S130 is performed simultaneously, and step S130 can also be executed when needing the information on load using indoor units.
Step S700: judge whether the load F of indoor units is more than or equal to load threshold according to the information on load of indoor units
Value Ft；
If the load F of indoor units is more than or equal to load threshold value Ft, execute step S800.
If the load F of indoor units is less than load threshold value Ft, execute step S900.
Step S900: the opening value of the expansion valve of indoor unit in operating status is equal to K in control indoor units1, and
Since the opening value of expansion valve is equal to K1When, the impurity of the inner passage in expansion valve is taken out of from expansion valve by refrigerant,
This makes it possible to the indoor unit normal works for guaranteeing to be in operating status, therefore, after step S900 is finished, execute step
S600, to continue opening value of the control in the expansion valve to closed state from K1It is changed into Koff, so that in closed state
Expansion valve close.
From the above, it can be seen that the load F when indoor units is more than or equal to load threshold value FtWhen, illustrate contained by refrigerant
Impurity will not be stuck in the inner passage to the expansion valve of closed state, and therefore, control is in the expansion to closed state
The opening value of valve is equal to Koff, so that closing in the expansion valve to closed state, the impurity damage contained by refrigerant will not occur
Wound is so that the problem of being in the internal part to the expansion valve of closed state.When the load F of indoor units is less than load threshold value Ft
When, illustrate that the impurity contained by refrigerant is easy to be trapped in the inner passage of the expansion valve of indoor unit in operating status
In, if closing the expansion valve of indoor unit in operating status, the impurity damage contained by refrigerant can be made to be in operation
The internal part of expansion valve in the indoor unit of state.Therefore, the load F of indoor units is less than load threshold value Ft, control the room
The opening value of the expansion valve of indoor unit in operating status is equal to K in interior unit1, then control in the expansion to closed state
The opening value of valve is from K1It is changed into Koff.As it can be seen that expansion valve control method provided in an embodiment of the present invention can be further ensured that expansion
The internal part of valve closes expansion valve in the case where not being damaged.
As shown in Figure 2 and Figure 8, the embodiment of the invention also provides a kind of expansion control valve device, expansion valve control dresses
It sets and includes:
Receiving module 210, for receiving the operation and control information of indoor units；
Processing module 220, for analyzing the indoor unit contained by indoor units according to the operation and control information of indoor units
Expansion valve whether be in closed state；
Control module 230 is in when closed state for the expansion valve in the indoor unit contained by the indoor units,
Opening value of the control in the expansion valve to closed state is equal to K1, so that the inner passage in the expansion valve to closed state
Impurity taken out of from expansion valve by refrigerant；The opening value in the expansion valve to closed state is controlled from K1It is changed into Koff,
So that being closed in the expansion valve to closed state, KoffFor the opening value of the expansion valve of characterization closed state.
The specific implementation process of above-mentioned expansion control valve device can refer to the description for expansion valve control method above.
Compared with prior art, the beneficial effect of expansion control valve device provided in an embodiment of the present invention and above-mentioned expansion valve
The beneficial effect of control method is identical, and this will not be repeated here.
In some embodiments, as shown in figures 3 and 8, above-mentioned processing module 220 is specifically used for according to the indoor units
Operation and control information obtain indoor units contained by each indoor unit state control information；Judge the indoor units institute
The type of the state control information of each indoor unit contained；
If the state control information of at least one indoor unit contained by the indoor units is that refrigeration closes control information,
Confirm that the expansion valve of at least one indoor unit is in closed state；
If the state control information of each indoor unit contained by the indoor units is that control information is closed in heating, really
The expansion valve for recognizing the indoor unit contained by the indoor units is in closed state；
If the state control information for the part indoor unit that the indoor units contain is that control information is closed in heating, institute is confirmed
The expansion valve for stating each indoor unit contained by indoor units is not on to closed state.
In some embodiments, as shown in Figure 2 and Figure 8, indoors the expansion valve of the indoor unit contained by unit be in
Closed state, opening value of the control in the expansion valve to closed state are equal to K1Before, above-mentioned receiving module 210 is also used to receive
Opening information in the expansion valve to closed state；Above-mentioned processing module 220 is also used to according in the swollen of closed state
The opening information of swollen valve obtains the inner passage width W in the expansion valve to closed state；Judgement is in closed state
Whether the inner passage width W of expansion valve is greater than predetermined width W0；
Above-mentioned control module 230 is also used to be greater than in the inner passage width W in the expansion valve to closed state default
Width W0When, opening value of the control in the expansion valve to closed state is equal to Koff, so that in the expansion valve to closed state
It closes；It is less than or equal to predetermined width W in the inner passage width W in the expansion valve to closed state0When, it executes control and is in
The opening value of expansion valve to closed state is equal to K1。
In some embodiments, as shown in Figure 4 and Figure 8, above-mentioned processing module 220 is also used to according in closed state
Expansion valve opening information, obtain in closed state expansion valve opening value K0；According in closed state
The opening value K of expansion valve0With default opening value Ka, the first aperture regulation parameter, Δ k is obtained1, Δ k1> Ka-K0, preset opening value
Ka refers to that the inner passage width W of the expansion valve to closed state is equal to predetermined width W0When, expansion valve to closed state
Opening value；
Above-mentioned control module 230 is specifically used for according to the first aperture regulation parameter, Δ k1With in closed state
The opening value K of expansion valve0The opening value in the expansion valve to closed state is controlled from K0It is changed into K1, K1=K0+Δk1。
In some embodiments, as shown in Figure 2 and Figure 8, if the inner passage width W in the expansion valve to closed state
Greater than predetermined width W0, opening value of the control in the expansion valve to closed state is equal to KoffBefore, above-mentioned receiving module 210 is also
For receiving the information on load of indoor units；Above-mentioned processing module 220 is also used to be sentenced according to the information on load of the indoor units
Whether the load F for the indoor units of breaking is more than or equal to load threshold value Ft；
Above-mentioned control module 230 is also used to be more than or equal to load threshold value F in the load F of the indoor unitstWhen, execute control
Opening value of the system in the expansion valve to closed state is equal to Koff；It is less than load threshold value F in the load F of the indoor unitst
When, the opening value for controlling the expansion valve of indoor unit in operating status in the indoor units is equal to K1, execute control and be in
The opening value of expansion valve to closed state is from K1It is changed into Koff。
In some embodiments, as shown in Figure 6 and Figure 8, above-mentioned processing module 220 is also used to according in closed state
Expansion valve opening information, obtain in closed state expansion valve opening value K0；
Above-mentioned control module 230 is specifically used for controlling the opening value for being in the expansion valve to closed state from K0It is changed into
Kmin, control is in the opening value of expansion valve to closed state from KminIt is changed into Koff, Kmin< Koff< K0, Koff=Kmin+Δ
k2, Δ k2For the second aperture regulation parameter, KminFor the minimum aperture for being in the expansion valve to closed state.
In some embodiments, as shown in Figure 5 and Figure 8, above-mentioned control module 230, which is specifically used for controlling, is in shape to be closed
The opening value of the expansion valve of state is from K1It is changed into Kmin, control is in the opening value of expansion valve to closed state from KminIt is changed into
Koff, Kmin< Koff< K1, Koff=Kmin+Δk2, Δ k2For the second aperture regulation parameter, KminTo be in the swollen of closed state
The minimum aperture of swollen valve.
The embodiment of the invention also provides a kind of air-conditioning system, including above-mentioned expansion control valve device, expansion valve controls
Device is for controlling the expansion valve that indoor units contain.
Compared with prior art, the beneficial effect of air-conditioning system provided in an embodiment of the present invention and above-mentioned expansion valve controlling party
The beneficial effect of method is identical, and this will not be repeated here.
The present invention also provides a kind of computer storage medium, the computer storage medium by store it is one or more based on
The instruction of calculation machine, the computer software instructions include for executing computer program designed by above-mentioned expansion valve control method.
Compared with prior art, the beneficial effect of computer storage medium provided in an embodiment of the present invention and above-mentioned expansion valve
The beneficial effect of control method is identical, and this will not be repeated here.
As shown in figure 9, the embodiment of the invention also provides a kind of expansion valve controlling terminal 300, the expansion valve controlling terminal
300 include processor 320, transceiver 310, memory 330 and bus 340, processor 320, transceiver 310 and memory 330
It is communicated with one another by bus 340.Wherein,
Memory 330 realizes above-mentioned outdoor unit guard method for storing multiple instruction, and processor 320 executes described
Multiple instruction is to realize above-mentioned outdoor unit guard method.
Wherein, processor 320 described in the embodiment of the present invention can be a processor, be also possible to multiple processing elements
General designation.For example, the processor 320 can be central processing unit (Central Processing Unit, abbreviation CPU), it can also
To be specific integrated circuit (Application Specific Integrated Circuit, abbreviation ASIC), or matched
The one or more integrated circuits for implementing the embodiment of the present invention are set to, such as: one or more microprocessors (digital
Signal processor, abbreviation DSP), or, one or more field programmable gate array (Field Programmable
Gate Array, abbreviation FPGA).
Memory 330 can be a storage device, be also possible to the general designation of multiple memory elements, and for storing and can hold
Line program code etc..And memory 330 may include random access memory (RAM), also may include nonvolatile memory (non-
Volatile memory), for example, magnetic disk storage, flash memory (Flash) etc..
It is total that bus 340 can be industry standard architecture (Industry Standard Architecture, ISA)
Line, external equipment interconnection (Peripheral Component, PCI) bus or extended industry-standard architecture (Extended
Industry Standard Architecture, EISA) bus etc..It is total that the bus 340 can be divided into address bus, data
Line, control bus etc..Only to be indicated with a thick line in Fig. 9, it is not intended that an only bus or a type convenient for indicating
The bus of type.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for equipment reality
For applying example, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to embodiment of the method
Part explanation.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (16)
1. a kind of expansion valve control method characterized by comprising
Receive the operation and control information of indoor units；
Whether it is in wait close according to the expansion valve that the operation and control information of indoor units analyzes the indoor unit contained by indoor units
Closed state；
If the expansion valve of the indoor unit contained by the indoor units is in closed state, control is in the swollen of closed state
The opening value of swollen valve is equal to K1, so that the impurity of the inner passage in the expansion valve to closed state is by refrigerant from expansion valve
In take out of；
The opening value in the expansion valve to closed state is controlled from K1It is changed into Koff, so that in the expansion valve to closed state
It closes, KoffFor the opening value of the expansion valve of characterization closed state.
2. expansion valve control method according to claim 1, which is characterized in that
Whether the expansion valve that the indoor unit contained by indoor units is analyzed according to the operation and control information of indoor units is in
Include: to closed state
Letter is controlled according to the state that the operation and control information of the indoor units obtains each indoor unit contained by indoor units
Breath；
Judge the type of the state control information of each indoor unit contained by the indoor units；
If the state control information of at least one indoor unit contained by the indoor units is that refrigeration closes control information, confirmation
The expansion valve of at least one indoor unit is in closed state；
If the state control information of each indoor unit contained by the indoor units is that control information is closed in heating, institute is confirmed
The expansion valve for stating the indoor unit contained by indoor units is in closed state；
If the state control information for the part indoor unit that the indoor units contain is that control information is closed in heating, the room is confirmed
The expansion valve of each indoor unit contained by interior unit is not on to closed state.
3. expansion valve control method according to claim 1, which is characterized in that if the interior contained by the indoor units
The expansion valve of machine is in closed state, and opening value of the control in the expansion valve to closed state is equal to K1Before, the expansion
Valve control method further include:
Receive the opening information in the expansion valve to closed state；
According to the opening information in the expansion valve to closed state, the inner passage in the expansion valve to closed state is obtained
Width W；
Whether judgement is greater than predetermined width W in the inner passage width W of the expansion valve to closed state0；
If the inner passage width W in the expansion valve to closed state is greater than predetermined width W0, control is in closed state
The opening value of expansion valve is equal to Koff, so that being closed in the expansion valve to closed state；
If the inner passage width W in the expansion valve to closed state is less than or equal to predetermined width W0, control is executed in wait close
The opening value of the expansion valve of closed state is equal to K1。
4. expansion valve control method according to claim 3, which is characterized in that the control is in the swollen of closed state
The opening value of swollen valve is equal to K1Include:
According to the opening information in the expansion valve to closed state, the opening value K in the expansion valve to closed state is obtained0；
According to the opening value K in the expansion valve to closed state0With default opening value Ka, the first aperture regulation parameter, Δ is obtained
k1, preset opening value Ka and refer to that the inner passage width W of the expansion valve to closed state is equal to predetermined width W0When, shape to be closed
The opening value of the expansion valve of state, Δ k1> Ka-K0；
According to the first aperture regulation parameter, Δ k1With the opening value K in the expansion valve to closed state0Control is in wait close
The opening value of the expansion valve of closed state is from K0It is changed into K1, K1=K0+Δk1。
5. expansion valve control method according to claim 3, which is characterized in that if in the expansion valve to closed state
Inner passage width W is greater than predetermined width W0, opening value of the control in the expansion valve to closed state is equal to KoffBefore, it is described
Expansion valve control method further include:
Receive the information on load of indoor units；
Judge whether the load F of the indoor units is more than or equal to load threshold value F according to the information on load of the indoor unitst；
If the load F of the indoor units is more than or equal to load threshold value Ft, execute control opening in the expansion valve to closed state
Angle value is equal to Koff；
If the load F of the indoor units is less than load threshold value Ft, control indoor unit in operating status in the indoor units
Expansion valve opening value be equal to K1, opening value of the control in the expansion valve to closed state is executed from K1It is changed into Koff。
6. expansion valve control method according to claim 3, which is characterized in that the control is in the swollen of closed state
The opening value of swollen valve is equal to KoffInclude:
According to the opening information in the expansion valve to closed state, the opening value K in the expansion valve to closed state is obtained0；
Control is in the opening value of expansion valve to closed state from K0It is changed into Kmin, KminTo be in the expansion to closed state
The minimum aperture of valve；
Control is in the opening value of expansion valve to closed state from KminIt is changed into Koff, Kmin< Koff< K0, Koff=Kmin+Δ
k2, Δ k2For the second aperture regulation parameter.
7. expansion valve control method according to claim 1, which is characterized in that the control is in the swollen of closed state
The opening value of swollen valve is from K1It is changed into KoffInclude:
Control is in the opening value of expansion valve to closed state from K1It is changed into Kmin, KminTo be in the expansion to closed state
The minimum aperture of valve；
Control is in the opening value of expansion valve to closed state from KminIt is changed into Koff, Kmin< Koff< K1, Koff=Kmin+Δ
k2, Δ k2For the second aperture regulation parameter.
8. a kind of expansion control valve device characterized by comprising
Receiving module, for receiving the operation and control information of indoor units；
Processing module, for analyzing the expansion valve of the indoor unit contained by indoor units according to the operation and control information of indoor units
Whether in closed state；
Control module is in when closed state, at control for the expansion valve in the indoor unit contained by the indoor units
It is equal to K in the opening value of the expansion valve to closed state1, so that the impurity of the inner passage in the expansion valve to closed state
It is taken out of from expansion valve by refrigerant；The opening value in the expansion valve to closed state is controlled from K1It is changed into Koff, so that place
In the expansion valve closing to closed state, KoffFor the opening value of the expansion valve of characterization closed state.
9. expansion control valve device according to claim 8, which is characterized in that the processing module is specifically used for according to institute
The operation and control information for stating indoor units obtains the state control information of each indoor unit contained by indoor units；Described in judgement
The type of the state control information of each indoor unit contained by indoor units；
If the state control information of at least one indoor unit contained by the indoor units is that refrigeration closes control information, confirmation
The expansion valve of at least one indoor unit is in closed state；
If the state control information of each indoor unit contained by the indoor units is that control information is closed in heating, institute is confirmed
The expansion valve for stating the indoor unit contained by indoor units is in closed state；
If the state control information for the part indoor unit that the indoor units contain is that control information is closed in heating, the room is confirmed
The expansion valve of each indoor unit contained by interior unit is not on to closed state.
10. expansion control valve device according to claim 8, which is characterized in that in the room contained by the indoor units
The expansion valve of interior machine is in closed state, and opening value of the control in the expansion valve to closed state is equal to K1Before, it is described to connect
Module is received to be also used to receive the opening information in the expansion valve to closed state；The processing module be also used to according in
The opening information of the expansion valve of closed state obtains the inner passage width W in the expansion valve to closed state；Judgement is in
Whether the inner passage width W of the expansion valve to closed state is greater than predetermined width W0；
The control module is also used to be greater than predetermined width W in the inner passage width W in the expansion valve to closed state0When,
Opening value of the control in the expansion valve to closed state is equal to Koff, so that being closed in the expansion valve to closed state；Locating
It is less than or equal to predetermined width W in the inner passage width W of the expansion valve to closed state0When, it executes control and is in shape to be closed
The opening value of the expansion valve of state is equal to K1。
11. expansion control valve device according to claim 10, which is characterized in that the processing module is also used to according to place
In the opening information of the expansion valve to closed state, the opening value K in the expansion valve to closed state is obtained0；According to being in
The opening value K of expansion valve to closed state0With default opening value Ka, the first aperture regulation parameter, Δ k is obtained1, Δ k1> Ka-
K0, preset opening value Ka and refer to that the inner passage width W of the expansion valve to closed state is equal to predetermined width W0When, shape to be closed
The opening value of the expansion valve of state；
The control module is specifically used for according to the first aperture regulation parameter, Δ k1With in the expansion valve to closed state
Opening value K0The opening value in the expansion valve to closed state is controlled from K0It is changed into K1, K1=K0+Δk1。
12. expansion control valve device according to claim 10, which is characterized in that if in the expansion valve to closed state
Inner passage width W be greater than predetermined width W0, opening value of the control in the expansion valve to closed state is equal to KoffBefore, institute
State the information on load that receiving module 210 is also used to receive indoor units；
The processing module is also used to judge according to the information on load of the indoor units whether the load F of the indoor units is big
In equal to load threshold value Ft；
The control module is also used to be more than or equal to load threshold value F in the load F of the indoor unitstWhen, execute control in
The opening value of the expansion valve of closed state is equal to Koff；It is less than load threshold value F in the load F of the indoor unitstWhen, control institute
The opening value for stating the expansion valve of indoor unit in operating status in indoor units is equal to K1, control is executed in closed state
Expansion valve opening value from K1It is changed into Koff。
13. expansion control valve device according to claim 10, which is characterized in that the processing module is also used to according to place
In the opening information of the expansion valve to closed state, the opening value K in the expansion valve to closed state is obtained0；
The control module is specifically used for controlling the opening value for being in the expansion valve to closed state from K0It is changed into Kmin, at control
The expansion valve to closed state opening value from KminIt is changed into Koff, Kmin< Koff< K0, Koff=Kmin+Δk2, Δ k2It is
Two aperture regulation parameters, KminFor the minimum aperture for being in the expansion valve to closed state.
14. expansion control valve device according to claim 8, which is characterized in that the control module is specifically used for control
The opening value of the expansion valve to closed state is in from K1It is changed into Kmin, control the aperture for being in the expansion valve to closed state
It is worth from KminIt is changed into Koff, Kmin< Koff< K1, Koff=Kmin+Δk2, Δ k2For the second aperture regulation parameter, KminFor be in
The minimum aperture of the expansion valve of closed state.
15. a kind of computer storage medium, which is characterized in that for storing one or more computer instructions, the computer
Software instruction includes to require computer program designed by any one of 1~7 expansion valve control method for perform claim.
16. a kind of air-conditioning system, which is characterized in that including any one of the claim 8~14 expansion control valve device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811603443.4A CN109682022B (en) | 2018-12-26 | 2018-12-26 | Expansion valve control method and device and air conditioning system |
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|---|---|---|---|
| CN201811603443.4A CN109682022B (en) | 2018-12-26 | 2018-12-26 | Expansion valve control method and device and air conditioning system |
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| CN109682022B (en) | 2021-03-19 |
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