CN107270518A - Air-conditioning system, the control device of air-conditioning system and method - Google Patents
Air-conditioning system, the control device of air-conditioning system and method Download PDFInfo
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- CN107270518A CN107270518A CN201710620472.0A CN201710620472A CN107270518A CN 107270518 A CN107270518 A CN 107270518A CN 201710620472 A CN201710620472 A CN 201710620472A CN 107270518 A CN107270518 A CN 107270518A
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- air
- conditioning system
- cold medium
- valve member
- medium flux
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
Abstract
The invention discloses a kind of air-conditioning system, the control device of air-conditioning system and method, the first port of outdoor heat exchanger is connected by the first pipeline with compressor, and the second port of outdoor heat exchanger is connected by the second pipeline with indoor heat exchanger, and device includes：The N number of branch road being connected in parallel with the first pipeline, wherein, N is the integer more than 1；N number of valve member is correspondingly arranged in N number of branch road, and each valve member is used to control being turned on and off for correspondence branch road；Flow detection unit, flow detection unit is used for the cold medium flux for detecting air-conditioning system；Control unit, control unit is respectively connected with N number of valve member and flow detection unit, and control unit is used to control being turned on and off for N number of valve member according to the cold medium flux of air-conditioning system.Thus, it is possible to by control valve component be turned on and off control the cold medium flux of air-conditioning system, and then ensure that the refrigerant for getting in heat exchanger is not in the phenomenon of overheat, so as to improve the refrigeration performance of air-conditioning.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of control device of air-conditioning system, a kind of air-conditioning system, one
Plant the control method and a kind of non-transitorycomputer readable storage medium of air-conditioning system.
Background technology
In correlation technique, the evaporator and condensation vessel volume of frequency conversion High-energy-efficienair air conditioner system are generally all than larger, and system is cold
Matchmaker's amount is charged is higher by 30% than common air-conditioning system.But, the problem of correlation technique is present is that energy efficient system is typically using small
The compressor of discharge capacity, coolant quantity exceed compressor maximum charging amount, to compressor return liquid, oil return and reliability exist compared with
Big potential safety hazard, moreover, when compressor is run under low frequency state, the flow velocity of system is smaller, refrigerant accumulates in condensation substantially
In device, cause the refrigerant in evaporator on the low side, cause the suction temperature of compressor occur fluctuating and temperature drift phenomenon, be
Controlling cold declines, and EER (Energy Efficiency Ratio, the coefficient of performance of refrigerating of air conditioner) is decreased obviously.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention
First purpose be to propose a kind of control device of air-conditioning system, and the refrigerant that ensure that into evaporator is not in overheat
Phenomenon, the suction temperature of compressor is not in the phenomenon of fluctuation and temperature drift.
Second object of the present invention is to propose a kind of air-conditioning system.
Third object of the present invention is to propose a kind of control method of air-conditioning system.
Fourth object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of control device of air-conditioning system, described
Air-conditioning system includes compressor, outdoor heat exchanger and indoor heat exchanger, and the first port of the outdoor heat exchanger passes through the first pipe
Road is connected with the compressor, and the second port of the outdoor heat exchanger is connected by the second pipeline with the indoor heat exchanger,
Described device includes：The N number of branch road being connected in parallel, the N number of branch road being connected in parallel and first pipeline are in parallel or series
Connection, wherein, N is the integer more than 1；N number of valve member, N number of valve member is correspondingly arranged in N number of branch road, often
Individual valve member is used to control being turned on and off for correspondence branch road；Flow detection unit, the flow detection unit is used to detect
The cold medium flux of the air-conditioning system；Control unit, described control unit and N number of valve member and the flow detection list
Member is respectively connected with, and described control unit is used to control opening for N number of valve member according to the cold medium flux of the air-conditioning system
Open or close.
The control device of the air-conditioning system proposed according to embodiments of the present invention, first port and compression in outdoor heat exchanger
N number of valve member is correspondingly arranged on N number of branch road in parallel on the first connected pipeline of machine, N number of branch road, each valve member is used to control
System correspondence branch road is turned on and off, and control unit detects the cold medium flux of air-conditioning system by flow monitoring unit, and according to
The cold medium flux of air-conditioning system controls being turned on and off for N number of valve member.Thus, the device of the embodiment of the present invention can pass through
Control valve component is turned on and off controlling the cold medium flux of air-conditioning system, and then ensures to get in the refrigerant of heat exchanger
Be not in the phenomenon of overheat, and ensure that the suction temperature of compressor is not in the phenomenon of fluctuation and temperature drift, so that
Improve the refrigeration performance of air-conditioning, improve the reliability of compressor, lift the experience of user.
According to one embodiment of present invention, the control device of the air-conditioning system constructs multiple flow rate zones, described many
Individual flow rate zone and multiple unlatching quantity are corresponding respectively, wherein, described control unit is further used for obtaining the air-conditioning system
Cold medium flux belonging to flow rate zone, and flow rate zone according to belonging to the cold medium flux of the air-conditioning system is corresponding opens
Quantity is controlled to N number of valve member.
According to one embodiment of present invention, when the air-conditioning system is freezed, described control unit is further used
In：When the cold medium flux of the air-conditioning system is less than first flow, any one in control N number of valve member is opened
Open；When the cold medium flux of the air-conditioning system is more than or equal to the first flow and is less than or equal to second flow, the N is controlled
Any M unlatching in individual valve member, wherein, M is the integer more than 1 and less than N；In the cold medium flux of the air-conditioning system
During more than the second flow, N number of valve member is controlled to open.
According to one embodiment of present invention, N number of branch road may be disposed at the first port of the outdoor heat exchanger,
The flow detection unit is arranged at the second port of the outdoor heat exchanger, with by detecting the second of the outdoor heat exchanger
The cold medium flux of port obtains the cold medium flux of the air-conditioning system.
According to one embodiment of present invention, described control unit can be additionally operable to obtain the operation frequency of the air-conditioning system
Rate, and when the running frequency of the air-conditioning system is less than predeterminated frequency according to the control of the cold medium flux of the air-conditioning system
N number of valve member.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of air-conditioning system, including described air-conditioning
The control device of system.
The air-conditioning system proposed according to embodiments of the present invention, passes through the control device of air-conditioning system, it is ensured that get in and change
The refrigerant of hot device is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature drift
Phenomenon, so as to improve the refrigeration performance of air-conditioning, improves the reliability of compressor, lifts the experience of user.
To reach above-mentioned purpose, third aspect present invention embodiment proposes a kind of control method of air-conditioning system, described
Air-conditioning system includes compressor, outdoor heat exchanger, indoor heat exchanger, N number of branch road and N number of valve member, the outdoor heat exchanger
First port be connected by the first pipeline with the compressor, the second port of the outdoor heat exchanger by the second pipeline with
The indoor heat exchanger is connected, N number of branch circuit parallel connection connection, and the N number of branch road being connected in parallel and first pipeline are simultaneously
Join or be connected in series, N number of valve member is correspondingly arranged in N number of branch road, each valve member is used to control correspondence branch
Road is turned on and off, and N is the integer more than 1, be the described method comprises the following steps：Detect the refrigerant stream of the air-conditioning system
Amount；Being turned on and off for N number of valve member is controlled according to the cold medium flux of the air-conditioning system.
The control method of the air-conditioning system proposed according to embodiments of the present invention, by detecting the cold medium flux of air-conditioning system,
Then being turned on and off for N number of valve member is controlled according to the cold medium flux of air-conditioning system.Thus, the side of the embodiment of the present invention
Method, can by control valve component be turned on and off control the cold medium flux of air-conditioning system, and then ensure to get in
The refrigerant of heat exchanger is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature drift
Phenomenon, so as to improve the refrigeration performance of air-conditioning, improve the reliability of compressor, lift the experience of user.
According to one embodiment of present invention, multiple flow rate zones, the multiple flow rate zone and multiple unlatching numbers are constructed
Amount is corresponded to respectively, described to control being turned on and off for N number of valve member according to the cold medium flux of the air-conditioning system, described
The control method of air-conditioning system may include：Obtain the flow rate zone belonging to the cold medium flux of the air-conditioning system；According to described
The corresponding quantity of opening of flow rate zone belonging to the cold medium flux of air-conditioning system controls N number of valve member.
According to one embodiment of present invention, it is described according to the air-conditioning system when the air-conditioning system is freezed
Cold medium flux control N number of valve member to be turned on and off, the control method of described air-conditioning system may include：Work as institute
When the cold medium flux for stating air-conditioning system is less than first flow, arbitrarily opening all the way in N number of valve member is controlled；When described
When the cold medium flux of air-conditioning system is more than or equal to the first flow and is less than or equal to second flow, N number of valve group is controlled
Any M roads in part are opened, wherein, M is the integer more than 1 and less than N；Described in being more than when the cold medium flux of the air-conditioning system
During second flow, N number of valve member is controlled to open.
According to one embodiment of present invention, the control method of described air-conditioning system can be by detecting the outdoor heat exchange
The cold medium flux of the second port of device obtains the cold medium flux of the air-conditioning system.
According to one embodiment of present invention, the control method of described air-conditioning system can also include：Obtain the air-conditioning
The running frequency of system；When the running frequency of the air-conditioning system is less than predeterminated frequency, according to the refrigerant of the air-conditioning system
Flow controls N number of valve member.
To reach above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter, is stored thereon with computer program, and the control method of described air-conditioning system is realized when the program is executed by processor.
The non-transitory computer-readable medium proposed according to embodiments of the present invention, by the controlling party for performing air-conditioning system
Method, it is ensured that the refrigerant for getting in heat exchanger is not in the phenomenon of overheat, and ensure that the suction temperature of compressor is not in
Fluctuation and the phenomenon of temperature drift, so as to improve the refrigeration performance of air-conditioning, improve the reliability of compressor, lift the body of user
Test.
Brief description of the drawings
Fig. 1 is the block diagram of the control device of air-conditioning system according to embodiments of the present invention；
Fig. 2 is the structural representation of air-conditioning system according to an embodiment of the invention；
Fig. 3 is the block diagram of air-conditioning system according to embodiments of the present invention；
Fig. 4 is the flow chart of the control method of air-conditioning system according to embodiments of the present invention；
Fig. 5 is the flow chart of the control method of air-conditioning system according to an embodiment of the invention；And
Fig. 6 is the flow chart of the control method of air-conditioning system in accordance with another embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings come control device, air-conditioning system and the air-conditioning system of the air-conditioning system that describes the embodiment of the present invention
Control method.
Fig. 1 is the block diagram of the control device of air-conditioning system according to embodiments of the present invention.Wherein, according to Fig. 2's
Embodiment, air-conditioning system may include compressor 1, outdoor heat exchanger 2 and indoor heat exchanger 3, and the first port of outdoor heat exchanger 2 is led to
Cross the first pipeline 6 with compressor 1 to be connected, the second port of outdoor heat exchanger 2 is connected by the second pipeline 7 with indoor heat exchanger 3.
Further, as shown in Fig. 2 the second port that the second port of outdoor heat exchanger 2 passes through the second pipeline 7 and indoor heat exchanger 3
It is connected, the first port of indoor heat exchanger 3 is connected by the 3rd pipeline 8 with compressor 1.
Specifically, as shown in Fig. 2 air-conditioning system may also include throttling arrangement 4 and four-way valve 5, wherein, the of four-way valve 5
One end C is connected with the first port of outdoor heat exchanger 2, and the second end S of four-way valve 5 is connected with the gas outlet of compressor 1, i.e., outdoor
The first port of heat exchanger 2 can be connected by four-way valve 5 with the gas outlet of compressor 1, and the 3rd end E of four-way valve 5 is changed with interior
The first port of hot device 3 is connected, and the 4th end D of four-way valve 5 is connected with the gas returning port of compressor 1, i.e. the first of indoor heat exchanger 3
Port can be connected by four-way valve with the gas returning port of compressor 1, and the second port of outdoor heat exchanger 2 passes through the second pipeline 7 and room
Interior heat exchanger 3 is connected, and throttling arrangement 4 is provided with the second pipeline 7.
As depicted in figs. 1 and 2, the control device of the air-conditioning system of the embodiment of the present invention includes：The N number of branch road being connected in parallel
10th, N number of valve member 11, flow detection unit 30 and control unit 20.
Wherein, the N number of branch road 10 being connected in parallel is connected in parallel or series with the first pipeline 6, wherein, N is more than 1
Integer；For example shown in Fig. 2, the N number of branch road 10 being connected in parallel is connected in parallel with the first pipeline 6, and N number of valve member 11 is correspondingly arranged
In N number of branch road 10, each valve member can be series at corresponding branch road, and each valve member is used for the unlatching for controlling correspondence branch road
Or close；Flow detection unit 30 is used for the cold medium flux for detecting air-conditioning system；Control unit 20 and N number of valve member 11 and stream
Amount detection unit 30 is respectively connected with, and control unit 20 is used to control N number of valve member 11 according to the cold medium flux of air-conditioning system
It is turned on and off.
It should be noted that N number of branch road 10 can be connected in the first end C and the first of outdoor heat exchanger 2 of four-way valve 5 in parallel
Between port, flow detection unit 30 is arranged between the second port of outdoor heat exchanger 2 and throttling arrangement 4, specifically, is such as schemed
Shown in 2, N number of branch road 10 may be disposed at the first port of outdoor heat exchanger 2, and flow detection unit 30 may be disposed at outdoor heat exchange
The second port of device 2, the refrigerant stream of air-conditioning system is obtained with the cold medium flux of the second port by detecting outdoor heat exchanger 2
Amount, and then control unit 20 controls being turned on and off for N number of valve member 11 according to the cold medium flux of air-conditioning system.
Specifically, within air-conditioning systems, the first port of outdoor heat exchanger 2 passes through the first pipeline 6 and the phase of compressor 1
Even, the first pipeline 6 is connected in parallel the valve being provided with N number of branch road 10, each branch road for controlling the branch road to be turned on and off
Component, flow detection unit 30 can detect the cold medium flux of air-conditioning system in real time, and by the refrigerant stream of the air-conditioning system detected
Amount is sent to control unit 20, control unit 20 according to the cold medium flux of air-conditioning system control N number of valve member 11 unlatching or
Close.
Thereby, it is possible to by control valve component be turned on and off control the cold medium flux of air-conditioning system, Jin Erbao
Card gets in the refrigerant of heat exchanger and is not in the phenomenon of overheat, and ensure compressor suction temperature be not in fluctuation with
And the phenomenon of temperature drift, so as to improve the refrigerating capacity of air-conditioning, the reliability of compressor is improved, the experience of user is lifted.
According to one embodiment of present invention, multiple flow rate zones, multiple flow rate zones and multiple unlatching quantity point are constructed
Not Dui Ying, wherein, control unit 20 is further used for obtaining the flow rate zone belonging to the cold medium flux of air-conditioning system, and according to sky
The corresponding quantity of opening of flow rate zone belonging to the cold medium flux of adjusting system is controlled to N number of valve member 11.
It should be noted that multiple cold medium fluxes can be constructed according to the cold medium flux of the second port of outdoor heat exchanger 2
Flow rate zone, multiple flow rate zones can be corresponding respectively with multiple valve members unlatching quantity, i.e., each flow rate zone can be with one
Quantity correspondence is opened, wherein, each quantity of opening can be the integer for being less than or equal to N more than 0.
Specifically, can be by presetting multiple flow thresholds to construct multiple flow rate zones, for example, can be at least provided with a stream
Threshold value is measured, is first flow rate zone when flow is less than flow threshold, is second when flow is more than or equal to flow threshold
Flow rate zone；And for example, two flow thresholds can be set, are first flow rate zone when flow is less than first flow threshold value, when
It is second flow rate zone when flow is more than or equal to first flow threshold and is less than or equal to second flow threshold value, when flow is more than
It is the 3rd flow rate zone during second flow threshold；For another example three flow thresholds can be set, when flow is less than first flow
It is first flow rate zone during threshold value, is when flow is more than or equal to first flow threshold value and is less than or equal to the 3rd flow threshold
Second flow rate zone, is the 3rd flow when flow is more than second flow threshold and is less than or equal to the 3rd flow threshold
Interval, is the 4th flow rate zone when flow is more than the 3rd flow threshold.Wherein, each flow rate zone has corresponding valve
The unlatching quantity of door component, the refrigerant stream of air-conditioning system is adjusted with the unlatching by the corresponding valve member for opening quantity of control
Amount.
Specifically, control unit 20 can by flow detection unit 30 obtain air-conditioning system cold medium flux, and according to
The cold medium flux of air-conditioning system judges the flow rate zone belonging to cold medium flux, and the stream according to belonging to the cold medium flux of air-conditioning system
The interval corresponding unlatching quantity of amount is controlled to N number of valve member 11, that is, controls correspondence in N number of valve member 11 to open quantity
Valve member open.
According to one embodiment of present invention, when air-conditioning system is freezed, control unit 20 is further used for：In sky
When the cold medium flux of adjusting system is less than first flow, any one unlatching in N number of valve member 11 is controlled；In air-conditioning system
When cold medium flux is more than or equal to first flow and is less than or equal to second flow, any M in N number of valve member 11 is controlled to open
Open, wherein, M is the integer more than 1 and less than N；When the cold medium flux of air-conditioning system is more than second flow, N number of valve is controlled
Component 11 is opened.
That is, air-conditioning system is predeterminable two flow thresholds i.e. first flow and second flow, to construct three
Flow rate zone, wherein, first flow rate zone one valve member of correspondence is opened, second flow rate zone M valve group of correspondence
Part is opened, and the 3rd N number of valve member of flow rate zone correspondence is opened.
Specifically, when air-conditioning system is freezed, control unit 20 obtains the cold medium flux of air-conditioning system, and judges sky
Refrigerant belonging to the cold medium flux of adjusting system is interval, that is, judges the pass between the cold medium flux of air-conditioning system and preset flow threshold value
System, if the cold medium flux of air-conditioning system is less than first flow, control unit 20 then controls any one in N number of valve member 11
It is individual to open；If the cold medium flux of air-conditioning system is more than or equal to first flow and less than or equal to second flow, control unit 20 is then
Control any M unlatching in N number of valve member 11；If the cold medium flux of air-conditioning system is more than second flow, control unit
20 N number of valve members 11 of control are opened.Wherein, first flow is less than second flow.
It is understood that when the cold medium flux of air-conditioning system is larger, the cold medium flux of air-conditioning system is larger, as room
Interior heat exchanger 3 needs more refrigerant to be freezed, now, opens more valve member 11, increases refrigerant and is flowed from outdoor heat exchanger 2
To the flow of indoor heat exchanger 3；Make the refrigerant in indoor heat exchanger 3 sufficient, it is ensured that to flow to compressor 1 from indoor heat exchanger 3
Refrigerant temperature will not be higher, that is, ensure the suction temperature of compressor and will not raise.Thus, control unit 20 is according to air-conditioning system
Cold medium flux controls being turned on and off for N number of valve member 11, to change the cold medium flux of air-conditioning system.
Wherein, according to the specific embodiment of the present invention, when N is even number, M=N/2；When N is odd number, M=(N+
1)/2.For example, N, which may be configured as 6, M, may be configured as 3, i.e., the cold medium flux in air-conditioning system is more than or equal to first flow and is less than
3 valve members 11 can be opened during equal to second flow, other N-3 valve members (i.e. 3 valve members 11) are turned off.
For example, when air-conditioning system is freezed, control unit 20 obtains the cold medium flux n of air-conditioning system, in sky
When the cold medium flux n of adjusting system is less than first flow n0 (i.e. n ＜ n0), control unit 20 controls appointing in 6 valve members 11
One unlatching of meaning, and control other 5 valve members 11 to be turned off；It is more than or equal in the cold medium flux n of air-conditioning system first-class
When measuring n0 and being less than or equal to second flow n1 (i.e. n0≤n≤n1), control unit 20 controls any 3 in 6 valve members 11
It is individual to open, and control other 3 valve members 11 to close；It is more than second flow n1 (i.e. n ＞ in the cold medium flux n of air-conditioning system
When n1), control unit 20 controls 6 valve members 11 to open.
Further, according to one embodiment of present invention, control unit 20 is additionally operable to obtain the operation frequency of air-conditioning system
Rate, and N number of valve member is controlled according to the cold medium flux of air-conditioning system when the running frequency of air-conditioning system is less than predeterminated frequency
11。
That is, when air-conditioning system is freezed, if the low-frequency operation of compressor 1, according to the cold of air-conditioning system
Matchmaker's flow controls N number of valve member 11.When 1 low frequency refrigerating operaton of compressor, the refrigerant flow rate of air-conditioning system is relatively low, coolant quantity
Easily accumulate in outdoor heat exchanger 2, open more valve member 11, it is ensured that the coolant quantity for getting in heat exchanger 3 is more sufficient
In addition, according to one embodiment of present invention, control unit 20 is additionally operable to be more than in the running frequency of air-conditioning system
N number of valve member 11 is controlled to be all turned on during equal to predeterminated frequency.
That is, when air-conditioning system is freezed, if the high frequency of compressor 1 is run, outdoor heat exchanger 2 is entirely managed
Road whole participation action, i.e., N number of valve member 11 is all turned on, and is circulated with refrigerant when meeting air-conditioning system high frequency refrigeration.
In summary, the control device of the air-conditioning system proposed according to embodiments of the present invention, the first of outdoor heat exchanger
N number of valve member, each valve are correspondingly arranged on the first pipeline that port is connected with compressor on N number of branch road in parallel, N number of branch road
Component is used to control being turned on and off for correspondence branch road, and control unit detects the refrigerant stream of air-conditioning system by flow monitoring unit
Amount, and being turned on and off for N number of valve member is controlled according to the cold medium flux of air-conditioning system.Thus, the dress of the embodiment of the present invention
Put can by control valve component be turned on and off control the cold medium flux of air-conditioning system, and then ensure to get in change
The refrigerant of hot device is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature drift
Phenomenon, so as to improve the refrigerating capacity of air-conditioning, improves the reliability of compressor, lifts the experience of user.
The embodiment of the present invention also proposed a kind of air-conditioning system.
Fig. 3 is the block diagram of air-conditioning system according to embodiments of the present invention.As shown in Fig. 2 air-conditioning system 200 includes
The control device 100 of above-mentioned air-conditioning system.
The air-conditioning system proposed according to embodiments of the present invention, passes through the control device of air-conditioning system, it is ensured that get in and change
The refrigerant of hot device is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature drift
Phenomenon, so as to improve the refrigeration performance of air-conditioning, improves the reliability of compressor, lifts the experience of user.
Fig. 4 is the flow chart of the control method of air-conditioning system according to embodiments of the present invention.Wherein, according to Fig. 2 implementation
Example, air-conditioning system includes compressor, outdoor heat exchanger and indoor heat exchanger, and the first port of outdoor heat exchanger passes through the first pipeline
It is connected with compressor, the second port of outdoor heat exchanger is connected by the second pipeline with indoor heat exchanger, N number of branch circuit parallel connection connects
Connect, the N number of branch road being connected in parallel is connected in parallel or series with the first pipeline, and N number of valve member is correspondingly arranged in N number of branch road, often
Individual valve member is used to control being turned on and off for correspondence branch road, and N is the integer more than 1.Further, as shown in Fig. 2 outdoor
The second port of heat exchanger is connected by the second pipeline with the second port of indoor heat exchanger, and the first port of indoor heat exchanger is led to
The 3rd pipeline is crossed with compressor to be connected.
Specifically, as shown in Fig. 2 air-conditioning system may also include throttling arrangement and four-way valve, wherein, the first end of four-way valve
It is connected with the first port of outdoor heat exchanger, the second end of four-way valve is connected with the gas outlet of compressor, i.e. outdoor heat exchanger
First port can be connected by four-way valve with the gas outlet of compressor, the 3rd end of four-way valve and the first port of indoor heat exchanger
Be connected, the 4th end of four-way valve is connected with the gas returning port of compressor, i.e., the first port of indoor heat exchanger can by four-way valve and
The gas returning port of compressor is connected, and the second port of outdoor heat exchanger is connected by the second pipeline with indoor heat exchanger, the second pipeline
On be provided with throttling arrangement.
As shown in figure 4, the control method of the air-conditioning system of the embodiment of the present invention comprises the following steps：
S1：Detect the cold medium flux of air-conditioning system.
It should be noted that according to one embodiment of present invention, by detect outdoor heat exchanger second port it is cold
Matchmaker's flow obtains the cold medium flux of air-conditioning system.Wherein, the cold medium flux of air-conditioning system, stream can be detected by flow detection unit
Amount detection unit may be disposed between the second port of outdoor heat exchanger and throttling arrangement, specifically, as shown in Fig. 2 N number of branch road
It may be disposed at the first port of outdoor heat exchanger, flow detection unit may be disposed at the second port of outdoor heat exchanger.
S2：Being turned on and off for N number of valve member is controlled according to the cold medium flux of air-conditioning system.
Specifically, when air conditioner refrigerating is run, the cold medium flux of air-conditioning system is detected, and according to the refrigerant stream of air-conditioning system
Amount controls being turned on and off for N number of valve member.
Thereby, it is possible to by control valve component be turned on and off control the cold medium flux of air-conditioning system, Jin Erbao
The refrigerant that card enters evaporator is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature
The higher phenomenon of degree, so as to improve the refrigerating capacity of air-conditioning, improves the reliability of compressor, lifts the experience of user.
According to one embodiment of present invention, as shown in figure 5, constructing multiple flow rate zones, multiple flow rate zones with it is multiple
Open quantity to correspond to respectively, being turned on and off for N number of valve member, such as Fig. 5 are controlled according to the cold medium flux of the air-conditioning system
Shown, the control method of air-conditioning system also includes：
S101：Obtain the flow rate zone belonging to the cold medium flux of air-conditioning system.
S102：The corresponding quantity of opening of flow rate zone according to belonging to the cold medium flux of air-conditioning system controls N number of valve group
Part.
It should be noted that the stream of multiple cold medium fluxes can be constructed according to the cold medium flux of the second port of outdoor heat exchanger
Amount is interval, and multiple flow rate zones can be corresponding respectively with the unlatching quantity of multiple valve members, i.e., each flow rate zone can be with one
Quantity correspondence is opened, wherein, each quantity of opening can be the integer for being less than or equal to N more than 0.
Specifically, can be by presetting multiple flow thresholds to construct multiple flow rate zones, for example, can be at least provided with a stream
Threshold value is measured, is first flow rate zone when flow is less than flow threshold, is second when flow is more than or equal to flow threshold
Flow rate zone；And for example, two flow thresholds can be set, are first flow rate zone when flow is less than first flow threshold value, when
It is second flow rate zone when flow is more than or equal to first flow threshold and is less than or equal to second flow threshold value, when flow is more than
It is the 3rd flow rate zone during second flow threshold；For another example three flow thresholds can be set, when flow is less than first flow
It is first flow rate zone during threshold value, is when flow is more than or equal to first flow threshold value and is less than or equal to the 3rd flow threshold
Second flow rate zone, is the 3rd flow when flow is more than second flow threshold and is less than or equal to the 3rd flow threshold
Interval, is the 4th flow rate zone when flow is more than the 3rd flow threshold.Wherein, each flow rate zone has corresponding valve
The unlatching quantity of door component, the refrigerant stream of air-conditioning system is adjusted with the unlatching by the corresponding valve member for opening quantity of control
Amount.
Specifically, the cold medium flux of air-conditioning system is obtained, and then obtains the flow belonging to the cold medium flux of air-conditioning system
Interval, and the corresponding quantity of opening of flow rate zone according to belonging to the cold medium flux of air-conditioning system controls to N number of valve member
System, that is, control the valve member of correspondence unlatching quantity in N number of valve member to open.
According to one embodiment of present invention, when air-conditioning system is freezed, according to the cold medium flux control of air-conditioning system
Being turned on and off for N number of valve member is made, including：When the cold medium flux of air-conditioning system is less than first flow, N number of valve is controlled
Arbitrarily opening all the way in component；When the cold medium flux of air-conditioning system is more than or equal to first flow and less than or equal to second flow
When, control any M roads in N number of valve member to open, wherein, M is the integer more than 1 and less than N；When the refrigerant of air-conditioning system
When flow is more than second flow, N number of valve member is controlled to open.
That is, air-conditioning system is predeterminable two flow thresholds i.e. first flow and second flow, to construct three
Flow rate zone, wherein, first flow rate zone one valve member of correspondence is opened, second flow rate zone M valve group of correspondence
Part is opened, and the 3rd N number of valve member of flow rate zone correspondence is opened.
Specifically, when air-conditioning system is freezed, the cold medium flux of air-conditioning system is obtained, and judges the cold of air-conditioning system
Refrigerant belonging to matchmaker's flow is interval, that is, the relation between the cold medium flux of air-conditioning system and preset flow threshold value is judged, if empty
When the cold medium flux of adjusting system is less than first flow, then any one unlatching in N number of valve member is controlled；If air-conditioning system
Cold medium flux be more than or equal to first flow and during less than or equal to second flow, then control any M in N number of valve member to open
Open；If the cold medium flux of air-conditioning system is more than second flow, N number of valve member is controlled to open.Wherein, first flow
Less than second flow.
It is appreciated that when the cold medium flux of air-conditioning system is larger, the cold medium flux of air-conditioning system is larger, as room
Interior heat exchanger needs more refrigerant to be freezed, now, opens more valve member, increases refrigerant and flows to room from outdoor heat exchanger
The flow of interior heat exchanger then makes the refrigerant in indoor heat exchanger sufficient, it is ensured that the refrigerant temperature of compressor is flowed to from indoor heat exchanger
Rise, i.e., the suction temperature of compressor will not be higher.Thus, N number of valve member is controlled according to the cold medium flux of air-conditioning system
It is turned on and off, to change the cold medium flux of air-conditioning system.
Wherein, according to the specific embodiment of the present invention, when N is even number, M=N/2；When N is odd number, M=(N+
1)/2.For example, N, which may be configured as 6, M, may be configured as 3, i.e., the cold medium flux in air-conditioning system is more than or equal to first flow and is less than
3 valve members can be opened during equal to second flow, other N-3 valve members (i.e. 3 valve members) are turned off.
For example, when air-conditioning system is freezed, the cold medium flux n of air-conditioning system is obtained, in the cold of air-conditioning system
When matchmaker's flow n is less than first flow n0 (i.e. n ＜ n0), any one unlatching in 6 valve members of control, and control other 5
Individual valve member is turned off；It is more than or equal to first flow n0 and less than or equal to second flow n1 in the cold medium flux n of air-conditioning system
When (i.e. n0≤n≤n1), any 3 unlatchings in 6 valve members of control, and control other 3 valve members to close；In sky
When the cold medium flux n of adjusting system is more than second flow n1 (i.e. n ＞ n1), 6 valve members of control are opened.
Further, according to one embodiment of present invention, as shown in fig. 6, the control method of air-conditioning system also includes：
S201：Obtain the running frequency of air-conditioning system；
S202：When the running frequency of air-conditioning system is less than predeterminated frequency, controlled according to the cold medium flux of air-conditioning system N number of
Valve member.
That is, when air-conditioning system is freezed, if the low-frequency operation of compressor 1, according to the cold of air-conditioning system
Matchmaker's flow controls N number of valve member 11.When 1 low frequency refrigerating operaton of compressor, the refrigerant flow rate of air-conditioning system is relatively low, coolant quantity
Easily accumulate in outdoor heat exchanger 2, open more valve member, it is ensured that the coolant quantity for getting in heat exchanger 3 is more sufficient
In addition, according to one embodiment of present invention, control unit 20 is additionally operable to be more than in the running frequency of air-conditioning system
N number of valve member 11 is controlled to be all turned on during equal to predeterminated frequency.
That is, when air-conditioning system is freezed, if the high frequency of compressor 1 is run, outdoor heat exchanger 2 is entirely managed
Road whole participation action, i.e., N number of valve member 11 is all turned on, and is circulated with refrigerant when meeting air-conditioning system high frequency refrigeration.
In summary, the control method of the air-conditioning system proposed according to embodiments of the present invention, by detecting air-conditioning system
Cold medium flux, then controls being turned on and off for N number of valve member according to the cold medium flux of air-conditioning system.Thus, the present invention is real
The method for applying example, can by control valve component be turned on and off control the cold medium flux of air-conditioning system, and then ensure
The refrigerant for getting in heat exchanger is not in the phenomenon of overheat, and ensure compressor suction temperature be not in fluctuation and
The phenomenon of temperature drift, so as to improve the refrigerating capacity of air-conditioning, improves the reliability of compressor, lifts the experience of user.
The embodiment of the present invention also proposed a kind of non-transitorycomputer readable storage medium, be stored thereon with computer journey
Sequence, realizes the control method of described air-conditioning system when the program is executed by processor.
The non-transitory computer-readable medium proposed according to embodiments of the present invention, by the controlling party for performing air-conditioning system
Method, it is ensured that the refrigerant for getting in heat exchanger is not in the phenomenon of overheat, and ensure that the suction temperature of compressor is not in
Fluctuation and the phenomenon of temperature drift, so as to improve the refrigerating capacity of air-conditioning, improve the reliability of compressor, lift the body of user
Test.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (12)
1. a kind of control device of air-conditioning system, it is characterised in that the air-conditioning system includes compressor, outdoor heat exchanger and room
Interior heat exchanger, the first port of the outdoor heat exchanger is connected by the first pipeline with the compressor, the outdoor heat exchanger
Second port be connected by the second pipeline with the indoor heat exchanger, described device includes：
The N number of branch road being connected in parallel, the N number of branch road being connected in parallel is connected in parallel or series with first pipeline, wherein,
N is the integer more than 1；
N number of valve member, N number of valve member is correspondingly arranged in N number of branch road, and each valve member is used to control correspondence
Branch road is turned on and off；
Flow detection unit, the flow detection unit is used for the cold medium flux for detecting the air-conditioning system；
Control unit, described control unit is respectively connected with N number of valve member and the flow detection unit, the control
Unit is used to control being turned on and off for N number of valve member according to the cold medium flux of the air-conditioning system.
2. the control device of air-conditioning system according to claim 1, it is characterised in that the multiple flow rate zones of construction, described
Multiple flow rate zones and multiple unlatching quantity are corresponding respectively, wherein,
Described control unit is further used for obtaining the flow rate zone belonging to the cold medium flux of the air-conditioning system, and according to described
The corresponding quantity of opening of flow rate zone belonging to the cold medium flux of air-conditioning system is controlled to N number of valve member.
3. the control device of air-conditioning system according to claim 1 or 2, it is characterised in that when the air-conditioning system is carried out
During refrigeration, described control unit is further used for：
When the cold medium flux of the air-conditioning system is less than first flow, any one in control N number of valve member is opened
Open；
When the cold medium flux of the air-conditioning system is more than or equal to the first flow and is less than or equal to second flow, control is described
Any M unlatching in N number of valve member, wherein, M is the integer more than 1 and less than N；
When the cold medium flux of the air-conditioning system is more than the second flow, N number of valve member is controlled to open.
4. the control device of air-conditioning system according to claim 1, it is characterised in that N number of branch road is arranged at described
At the first port of outdoor heat exchanger, the flow detection unit is arranged at the second port of the outdoor heat exchanger, to pass through
Detect that the cold medium flux of the second port of the outdoor heat exchanger obtains the cold medium flux of the air-conditioning system.
5. the control device of air-conditioning system according to claim 1, it is characterised in that described control unit is additionally operable to obtain
The running frequency of the air-conditioning system, and when the running frequency of the air-conditioning system is less than predeterminated frequency according to the air-conditioning system
The cold medium flux of system controls N number of valve member.
6. a kind of air-conditioning system, it is characterised in that include the control of the air-conditioning system according to any one of claim 1-5
Device.
7. a kind of control method of air-conditioning system, it is characterised in that the air-conditioning system includes compressor, outdoor heat exchanger, room
Interior heat exchanger, N number of branch road and N number of valve member, the first port of the outdoor heat exchanger pass through the first pipeline and the compression
Machine is connected, and the second port of the outdoor heat exchanger is connected by the second pipeline with the indoor heat exchanger, and N number of branch road is simultaneously
Connection connection, the N number of branch road being connected in parallel is connected in parallel or series with first pipeline, N number of valve member correspondence
N number of branch road is arranged at, each valve member is used to control being turned on and off for correspondence branch road, and N is the integer more than 1, institute
The method of stating comprises the following steps：
Detect the cold medium flux of the air-conditioning system；
Being turned on and off for N number of valve member is controlled according to the cold medium flux of the air-conditioning system.
8. the control method of air-conditioning system according to claim 7, it is characterised in that the multiple flow rate zones of construction, described
Multiple flow rate zones and multiple unlatching quantity are corresponding respectively, described described N number of according to the control of the cold medium flux of the air-conditioning system
Valve member is turned on and off, including：
Obtain the flow rate zone belonging to the cold medium flux of the air-conditioning system；
The corresponding quantity of opening of flow rate zone according to belonging to the cold medium flux of the air-conditioning system controls N number of valve group
Part.
9. the control method of the air-conditioning system according to claim 7 or 8, it is characterised in that when the air-conditioning system is carried out
It is described that being turned on and off for N number of valve member is controlled according to the cold medium flux of the air-conditioning system during refrigeration, including：
When the cold medium flux of the air-conditioning system is less than first flow, arbitrarily opening all the way in N number of valve member is controlled
Open；
When the cold medium flux of the air-conditioning system is more than or equal to the first flow and is less than or equal to second flow, control is described
Any M roads in N number of valve member are opened, wherein, M is the integer more than 1 and less than N；
When the cold medium flux of the air-conditioning system is more than the second flow, N number of valve member is controlled to open.
10. the control method of air-conditioning system according to claim 7, it is characterised in that by detecting the outdoor heat exchange
The cold medium flux of the second port of device obtains the cold medium flux of the air-conditioning system.
11. the control method of air-conditioning system according to claim 7, it is characterised in that also include：
Obtain the running frequency of the air-conditioning system；
When the running frequency of the air-conditioning system is less than predeterminated frequency, according to the control of the cold medium flux of the air-conditioning system
N number of valve member.
12. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, it is characterised in that the program
The control method of the air-conditioning system as described in any in claim 7-11 is realized when being executed by processor.
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| CN107270518B (en) | 2020-05-05 |
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