CN107449110A - 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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Abstract
A kind of air-conditioning system of the present invention, the control device and method of air-conditioning system, the first port of indoor heat exchanger are connected by the 3rd pipeline with compressor, and the second port of indoor heat exchanger is connected by the second pipeline with outdoor heat exchanger, and device includes：The N number of branch road being connected in parallel is connected in parallel or series with the second pipeline；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 corresponding branch road；Pressure sensing cell is used for the refrigerant pressure for detecting indoor heat exchanger；Control unit is respectively connected with N number of valve member and pressure sensing cell, and control unit is used to control being turned on and off for N number of valve member according to the refrigerant pressure of indoor heat exchanger.Thus, it is possible to be turned on and off by control valve component to 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
The control method and a kind of non-transitorycomputer readable storage medium of kind 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 bigger, and system is cold
Matchmaker's amount charges is higher by 30% than common air-conditioning system.But correlation technique the problem of existing 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, and refrigerant accumulates in condensation substantially
In device, cause the refrigerant in evaporator on the low side, cause the suction temperature of compressor to occur fluctuating and the phenomenon of temperature drift, 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 solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of control device of air-conditioning system, can ensure that the refrigerant into evaporator is not in overheat
Phenomenon, the suction temperature of compressor are 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 indoor heat exchanger passes through the 3rd pipe
Road is connected with the compressor, and the second port of the indoor heat exchanger is connected by the second pipeline with the outdoor 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 second 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 are correspondingly arranged in N number of branch road, often
Individual valve member is used to control being turned on and off for corresponding branch road；Pressure sensing cell, the pressure sensing cell are used to detect
The refrigerant pressure of the indoor heat exchanger；Control unit, described control unit and N number of valve member and the pressure detecting
Unit is respectively connected with, and described control unit is used to control N number of valve member according to the refrigerant pressure of the indoor heat exchanger
Be turned on and off.
The control device of the air-conditioning system proposed according to embodiments of the present invention, N number of branch circuit parallel connection in parallel or is connected on room
On the second pipeline that the second port of interior heat exchanger is connected with outdoor heat exchanger, N number of valve member is correspondingly arranged on N number of branch road,
Each valve member is used to control being turned on and off for corresponding branch road, and control unit detects indoor heat exchange by pressure sensing cell
The refrigerant pressure of device, and being turned on and off for N number of valve member is controlled according to the refrigerant pressure of indoor heat exchanger.Thus, this hair
The device of bright embodiment can be turned on and off to control the cold medium flux of air-conditioning system, Jin Erbao by control valve component
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 refrigeration performance of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
According to one embodiment of present invention, multiple pressure ranges, the multiple pressure range and multiple unlatching numbers are constructed
Amount corresponds to respectively, wherein, described control unit is further used for obtaining the pressure belonging to the refrigerant pressure of the indoor heat exchanger
Section, and quantity is opened corresponding to the pressure range according to belonging to the refrigerant pressure of the indoor heat exchanger to N number of valve
Component is controlled.
According to one embodiment of present invention, when the air-conditioning system is freezed, described control unit is further used
In：When the refrigerant pressure of the indoor heat exchanger is less than first pressure, any one in control N number of valve member is opened
Open；When the refrigerant pressure of the indoor heat exchanger is more than or equal to the first pressure and is less than or equal to second pressure, institute is controlled
Any M unlatching in N number of valve member is stated, wherein, M is the integer more than 1 and less than N；In the cold of the indoor heat exchanger
When matchmaker's pressure is more than the second pressure, N number of valve member is controlled to open.
According to one embodiment of present invention, N number of branch road is stated to be arranged at the second port of the indoor heat exchanger, it is described
Pressure sensing cell is arranged at the first port of the indoor heat exchanger, with the first port by detecting the indoor heat exchanger
Refrigerant pressure obtain the refrigerant pressure of the indoor heat exchanger.
According to one embodiment of present invention, described control unit is additionally operable to obtain the running frequency of the air-conditioning system,
And the N is controlled according to the refrigerant pressure of the indoor heat exchanger when the running frequency of the air-conditioning system is less than predeterminated frequency
Individual 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, by the control device of air-conditioning system, guarantee, which is got in, changes
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, the reliability of compressor is improved, 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 indoor heat exchanger
First port be connected by the 3rd pipeline with the compressor, the second port of the indoor heat exchanger by the second pipeline with
The outdoor heat exchanger is connected, and N number of branch circuit parallel connection connection, the N number of branch road being connected in parallel and second pipeline are simultaneously
Join or be connected in series, N number of valve member is correspondingly arranged in N number of branch road, and each valve member is used to control corresponding 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 pressure of the indoor heat exchanger
Power；Being turned on and off for N number of valve member is controlled according to the refrigerant pressure of the indoor heat exchanger.
The control method of the air-conditioning system proposed according to embodiments of the present invention, by the refrigerant pressure for detecting indoor heat exchanger
Power, and being turned on and off for N number of valve member is controlled according to the refrigerant pressure of indoor heat exchanger.Thus, the embodiment of the present invention
It method, can be turned on and off to control the cold medium flux of air-conditioning system, and then ensured into entering the room by control valve component
The refrigerant of interior heat exchanger is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in that fluctuation and temperature are inclined
High phenomenon, so as to improve the refrigeration performance of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
According to one embodiment of present invention, multiple pressure ranges, the multiple pressure range and multiple unlatching numbers are constructed
Amount corresponds to respectively, described to control being turned on and off for N number of valve member according to the refrigerant pressure of the indoor heat exchanger, wraps
Include：Obtain the pressure range belonging to the refrigerant pressure of the indoor heat exchanger；According to the refrigerant pressure of indoor heat exchanger institute
Quantity is opened corresponding to the pressure range of category to be controlled N number of valve member.
According to one embodiment of present invention, it is described according to the indoor heat exchange when the air-conditioning system is freezed
The refrigerant pressure of device controls being turned on and off for N number of valve member, including：When the refrigerant pressure of the indoor heat exchanger is small
When first pressure, arbitrarily opening all the way in N number of valve member is controlled；When the refrigerant pressure of the indoor heat exchanger is big
In equal to the first pressure and when being less than or equal to second pressure, controlling any M roads in N number of valve member to open, its
In, M is the integer more than 1 and less than N；When the refrigerant pressure of the indoor heat exchanger is more than the second pressure, institute is controlled
N number of valve member is stated to open.
According to one embodiment of present invention, obtained by the refrigerant pressure for the first port for detecting the indoor heat exchanger
The refrigerant pressure of the indoor heat exchanger.
According to one embodiment of present invention, the control method of described air-conditioning system also includes：Obtain the air-conditioning system
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 indoor heat exchanger
N number of valve member described in Stress control.
To reach above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter, computer program is stored thereon with, 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, ensure that getting in the refrigerant of 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 is not considered as limiting the invention.
Below with reference to the accompanying drawings the control device of the air-conditioning system of the embodiment of the present invention, air-conditioning system and air-conditioning system described
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 reality
Example is applied, air-conditioning system may include compressor 1, outdoor heat exchanger 2 and indoor heat exchanger 3, and the first port of indoor heat exchanger 3 passes through
3rd pipeline 8 is connected with compressor 1, and the second port of indoor heat exchanger 3 is connected by the second pipeline 7 with outdoor heat exchanger 2.Enter
One step, as shown in Fig. 2 second port phase of the second port of outdoor heat exchanger 2 by the second pipeline 7 and indoor heat exchanger 3
Even, 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 changes 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：N number of branch road 10, the N of parallel connection
Individual valve member 11, pressure sensing cell 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 second pipeline 7, wherein, N is whole more than 1
Number；Such as shown in Fig. 2, the N number of branch road 10 and the second pipeline 7 that are connected in parallel are connected in parallel, 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, each valve member be used for the unlatching for controlling corresponding branch road or
Close；Pressure sensing cell 30 is used for the refrigerant pressure for detecting indoor heat exchanger 3；Control unit 20 and N number of valve member 11 and
Pressure sensing cell 30 is respectively connected with, and control unit 20 is used to control N number of valve member according to the refrigerant pressure of indoor heat exchanger 3
11 are turned on and off.
It should be noted that N number of branch road 10 can be connected in the second port and outdoor heat exchanger 2 of indoor heat exchanger 3 in parallel
Second port between, pressure sensing cell 30 is arranged between the first port of indoor heat exchanger 3 and compressor 1, specifically,
As shown in Fig. 2 N number of branch road 10 may be disposed at the first port of indoor heat exchanger 3, pressure sensing cell 30 may be disposed at interior
The second port of heat exchanger 3, indoor heat exchanger 3 is obtained with the refrigerant pressure of the first port by detecting indoor heat exchanger 3
Refrigerant pressure, and then control unit 20 controls unlatching or the pass of N number of valve member 11 according to the refrigerant pressure of indoor heat exchanger 3
Close.
Specifically, within air-conditioning systems, the first port of indoor heat exchanger 3 passes through the 3rd pipeline 8 and the phase of compressor 1
Even, the second pipeline is connected in parallel N number of branch road 10, the valve group for controlling the branch road to be turned on and off is provided with each branch road
Part, pressure sensing cell 30 can detect the refrigerant pressure of indoor heat exchanger 3 in real time, and by the cold of the indoor heat exchanger 3 detected
Matchmaker's pressure is sent to control unit 20, and control unit 20 controls N number of valve member 11 according to the refrigerant pressure of indoor heat exchanger 3
It is turned on and off.
Thereby, it is possible to being turned on and off to control the cold medium flux of air-conditioning system, Jin Erbao by control valve component
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, lifts the experience of user.
According to one embodiment of present invention, multiple pressure ranges, multiple pressure ranges and multiple unlatching quantity point are constructed
Not Dui Ying, wherein, control unit be further used for obtain indoor heat exchanger 3 refrigerant pressure belonging to pressure range, and according to
Quantity is opened corresponding to pressure range belonging to the refrigerant pressure of indoor heat exchanger 3 to be controlled N number of valve member.
It should be noted that multiple refrigerant pressures can be constructed according to the refrigerant pressure of the second port of indoor heat exchanger 3
Pressure range, multiple pressure ranges can be corresponding respectively with multiple valve members unlatching quantity, i.e., each pressure range can be with one
It is corresponding to open quantity, wherein, each quantity of opening can be to be less than or equal to N integer more than 0.
Specifically, can be by presetting multiple pressure thresholds to construct multiple pressure ranges, for example, can be at least provided with a pressure
Force threshold, it is first pressure range when pressure is less than pressure threshold, is second when pressure is more than or equal to pressure threshold
Pressure range；And for example, two pressure thresholds can be set, be first pressure range when pressure is less than first pressure threshold value, when
Pressure is second pressure range when being more than or equal to first pressure threshold and being less than or equal to second pressure threshold value, when pressure is more than
It is the 3rd pressure range during second pressure threshold；For another example three pressure thresholds can be set, when pressure is less than first pressure
It is first pressure range during threshold value, is when pressure is more than or equal to first pressure threshold value and is less than or equal to the 3rd pressure threshold
Second pressure range, it is the 3rd pressure when pressure is more than second pressure threshold and is less than or equal to the 3rd pressure threshold
Section, it is the 4th pressure range when pressure is more than the 3rd pressure threshold.Wherein, each pressure range has corresponding valve
The unlatching quantity of door component, to adjust the refrigerant of outdoor heat exchanger by controlling the unlatching of the corresponding valve member for opening quantity
Pressure.
Specifically, control unit 20 can obtain the refrigerant pressure of indoor heat exchanger 3, and root by pressure sensing cell 30
Judge the pressure range belonging to refrigerant pressure according to the refrigerant pressure of indoor heat exchanger 3, and according to the refrigerant pressure of indoor heat exchanger 3
Quantity is opened corresponding to affiliated pressure range to be controlled N number of valve member 11, that is, is controlled corresponding in N number of valve member 11
The valve member for opening quantity is opened.
According to one embodiment of present invention, when air-conditioning system is freezed, control unit is further used for：Indoors
When the refrigerant pressure of heat exchanger 3 is less than first pressure, any one unlatching in N number of valve member is controlled；Heat exchanger 3 indoors
Refrigerant pressure be more than or equal to first pressure and when being less than or equal to second pressure, control any M in N number of valve member is individual to open
Open, wherein, M is the integer more than 1 and less than N；When the refrigerant pressure of heat exchanger 3 is more than second pressure indoors, N number of valve is controlled
Door component is opened.
That is, air-conditioning system is predeterminable two pressure thresholds i.e. first pressure and second pressure, to construct three
Pressure range, wherein, the corresponding valve member of first pressure range is opened, and second pressure range corresponds to M valve group
Part is opened, and the 3rd pressure range corresponds to N number of valve member and opened.
Specifically, when air-conditioning system is freezed, control unit 20 obtains the refrigerant pressure of indoor heat exchanger 3, and sentences
Pressure range belonging to the refrigerant pressure of disconnected indoor heat exchanger 3, that is, judge the refrigerant pressure and preset pressure threshold of indoor heat exchanger 3
Relation between value, if the refrigerant pressure of indoor heat exchanger 3 is less than first pressure, control unit 20 then controls N number of valve group
Any one unlatching in part 11；If the refrigerant pressure of indoor heat exchanger 3 is more than or equal to first pressure and less than or equal to second
Pressure, control unit 20 then control any M unlatching in N number of valve member 11；If the refrigerant pressure of indoor heat exchanger 3 is big
In second pressure, control unit 20 then controls N number of valve member 11 to open.Wherein, first pressure is less than second pressure.
It is understood that when the refrigerant pressure of heat exchanger 3 is larger indoors, the refrigerant pressure of indoor heat exchanger 3 is larger,
As indoor heat exchanger 3 needs more refrigerant to be freezed, and now, opens more valve member 11, increases refrigerant and is changed from outdoor
Hot device 2 flows to the pressure of indoor heat exchanger 3；Make the refrigerant in indoor heat exchanger 3 sufficient, it is ensured that to flow to and press from indoor heat exchanger 3
The refrigerant temperature of contracting machine 1 will not be higher, that is, ensures the suction temperature of compressor and will not raise.Thus, control unit 20 is according to room
The refrigerant pressure of interior heat exchanger 3 controls being turned on and off for N number of valve member 11, to change the refrigerant pressure of outdoor heat exchanger.
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 refrigerant pressure of heat exchanger 3 is more than or equal to first pressure and small indoors
3 valve members 11 can be opened when equal to second pressure, 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 refrigerant pressure p of outdoor heat exchanger,
When the refrigerant pressure p of indoor heat exchanger 3 is less than first pressure p0 (i.e. p ＜ p0), control unit 20 is controlled in 6 valve members 11
Any one unlatching, and control other 5 valve members 11 to be turned off；The refrigerant pressure p of heat exchanger 3 is more than or equal to indoors
First pressure p0 and when being less than or equal to second pressure p1 (i.e. p0≤p≤p1), control unit 20 is controlled in 6 valve members 11
Any 3 unlatchings, and control other 3 valve members 11 to close；The refrigerant pressure p of heat exchanger 3 is more than second pressure indoors
When (i.e. p ＞ p1), 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 group is controlled according to the refrigerant pressure of indoor heat exchanger 3 when the running frequency of air-conditioning system is less than predeterminated frequency
Part 11.
That is, when air-conditioning system is freezed, if the low-frequency operation of compressor 1, according to indoor heat exchanger 3
Refrigerant pressure 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, refrigerant
Amount is easily accumulated in outdoor heat exchanger 2, opens more valve member 11, it is ensured that the coolant quantity for getting in heat exchanger 3 relatively fills
Foot
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, indoor heat exchanger 3 is entirely managed
Road whole participation action, i.e., N number of valve member 11 are all turned on, and are 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, N number of branch circuit parallel connection in parallel or
Be connected on the second port of indoor heat exchanger and the second pipeline that outdoor heat exchanger is connected on, N number of valve is correspondingly arranged on N number of branch road
Door component, each valve member are used to control being turned on and off for corresponding branch road, and control unit is detected by pressure sensing cell
The refrigerant pressure of indoor heat exchanger, and being turned on and off for N number of valve member is controlled according to the refrigerant pressure of indoor heat exchanger.By
This, the device of the embodiment of the present invention can be turned on and off to control the refrigerant stream of air-conditioning system by control valve component
Amount, and then the refrigerant for ensureing to get in heat exchanger is not in the phenomenon of overheat, and ensure that the suction temperature of compressor will not
Appearance is fluctuated and the phenomenon of temperature drift, so as to improve the refrigeration performance of air-conditioning, improves the reliability of compressor, lifts user
Experience.
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, by the control device of air-conditioning system, guarantee, which is got in, changes
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, the reliability of compressor is improved, 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 include compressor, outdoor heat exchanger, indoor heat exchanger, N number of branch road and N number of valve member, indoor heat exchanger
First port is connected by the 3rd pipeline with compressor, and the second port of indoor heat exchanger passes through the second pipeline and outdoor heat exchanger
It is connected, N number of branch circuit parallel connection connection, the N number of branch road being connected in parallel is connected in parallel or series with the second pipeline, N number of valve member pair
N number of branch road should be arranged at, each valve member is used to control being turned on and off for corresponding branch road, and N is the integer more than 1.Enter one
Step ground, as shown in Fig. 2 the second port of outdoor heat exchanger is connected by the second pipeline with the second port of indoor heat exchanger, room
The first port of interior heat exchanger is connected by the 3rd pipeline with compressor.
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 with
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 refrigerant pressure of indoor heat exchanger.
It should be noted that according to one embodiment of present invention, by detect indoor heat exchanger first port it is cold
Matchmaker's pressure obtains the refrigerant pressure of indoor heat exchanger.Wherein, the refrigerant pressure of indoor heat exchanger can be detected by pressure sensing cell
Power, pressure sensing cell may be disposed between the first port of indoor heat exchanger and compressor, specifically, as shown in Fig. 2 N number of
Branch road may be disposed at the second port of indoor heat exchanger, and pressure sensing cell may be disposed at the first port of indoor heat exchanger.
S2：Being turned on and off for N number of valve member is controlled according to the refrigerant pressure of indoor heat exchanger.
Specifically, when air conditioner refrigerating is run, the refrigerant pressure of indoor heat exchanger is detected, and according to the cold of indoor heat exchanger
The N number of valve member of matchmaker's Stress control is turned on and off.
Thereby, it is possible to being turned on and off to control the cold medium flux of air-conditioning system, Jin Erbao by control valve component
Card is not in the phenomenon of overheat into the refrigerant of evaporator, and ensures that the suction temperature of compressor is not in fluctuation and temperature
Higher phenomenon is spent, so as to improve the refrigerating capacity of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
According to one embodiment of present invention, as shown in figure 5, constructing multiple pressure ranges, multiple pressure ranges with it is multiple
Open quantity to correspond to respectively, being turned on and off for N number of valve member is controlled according to the refrigerant pressure of indoor heat exchanger, including：
S101：Obtain the pressure range belonging to the refrigerant pressure of indoor heat exchanger.
S102：Quantity is opened corresponding to pressure range according to belonging to the refrigerant pressure of indoor heat exchanger to N number of valve group
Part is controlled.
It should be noted that the pressure of multiple refrigerant pressures can be constructed according to the refrigerant pressure of the first port of indoor heat exchanger
Power section, multiple pressure ranges can be corresponding respectively with multiple valve members unlatching quantity, i.e., each pressure range can be opened with one
It is corresponding to open quantity, wherein, each quantity of opening can be to be less than or equal to N integer more than 0.
Specifically, can be by presetting multiple pressure thresholds to construct multiple pressure ranges, for example, can be at least provided with a pressure
Force threshold, it is first pressure range when pressure is less than pressure threshold, is second when pressure is more than or equal to pressure threshold
Pressure range；And for example, two pressure thresholds can be set, be first pressure range when pressure is less than first pressure threshold value, when
Pressure is second pressure range when being more than or equal to first pressure threshold and being less than or equal to second pressure threshold value, when pressure is more than
It is the 3rd pressure range during second pressure threshold；For another example three pressure thresholds can be set, when pressure is less than first pressure
It is first pressure range during threshold value, is when pressure is more than or equal to first pressure threshold value and is less than or equal to the 3rd pressure threshold
Second pressure range, it is the 3rd pressure when pressure is more than second pressure threshold and is less than or equal to the 3rd pressure threshold
Section, it is the 4th pressure range when pressure is more than the 3rd pressure threshold.Wherein, each pressure range has corresponding valve
The unlatching quantity of door component, to adjust the refrigerant of outdoor heat exchanger by controlling the unlatching of the corresponding valve member for opening quantity
Pressure.
Specifically, the refrigerant pressure of indoor heat exchanger can be obtained by pressure sensing cell, and according to indoor heat exchanger
Refrigerant pressure judge pressure range belonging to refrigerant pressure, and the pressure range according to belonging to the refrigerant pressure of indoor heat exchanger
Corresponding unlatching quantity is controlled to N number of valve member, that is, controls the corresponding valve member for opening quantity in N number of valve member
Open.
According to one embodiment of present invention, when air-conditioning system is freezed, according to the refrigerant pressure of indoor heat exchanger
Being turned on and off for N number of valve member is controlled, including：When the refrigerant pressure of indoor heat exchanger is less than first pressure, control is N number of
Arbitrarily opening all the way in valve member；When the refrigerant pressure of indoor heat exchanger is more than or equal to first pressure and less than or equal to second
During pressure, any M roads in N number of valve member are controlled to open, wherein, M is the integer more than 1 and less than N；Work as indoor heat exchanger
Refrigerant pressure when being more than second pressure, control N number of valve member to open.
That is, air-conditioning system is predeterminable two pressure thresholds i.e. first pressure and second pressure, to construct three
Pressure range, wherein, the corresponding valve member of first pressure range is opened, and second pressure range corresponds to M valve group
Part is opened, and the 3rd pressure range corresponds to N number of valve member and opened.
Specifically, when air-conditioning system is freezed, the refrigerant pressure of indoor heat exchanger is obtained, and judges indoor heat exchanger
Refrigerant pressure belonging to refrigerant section, that is, judge the relation between the refrigerant pressure of indoor heat exchanger and preset pressure threshold value,
If the refrigerant pressure of indoor heat exchanger is less than first pressure, any one unlatching in N number of valve member is controlled；If room
The refrigerant pressure of interior heat exchanger is more than or equal to first pressure and is less than or equal to second pressure, then controls appointing in N number of valve member
M unlatching of meaning；If the refrigerant pressure of indoor heat exchanger is more than second pressure, N number of valve member is controlled to open.Wherein,
First pressure is less than second pressure.
It is understood that when the refrigerant pressure of heat exchanger is larger indoors, as indoor heat exchanger needs more refrigerant
Freezed, now, open more valve member, increase the pressure that refrigerant flows to indoor heat exchanger from outdoor heat exchanger；Make room
Refrigerant in interior heat exchanger is sufficient, it is ensured that the refrigerant temperature that compressor is flowed to from indoor heat exchanger will not be higher, that is, ensures to compress
The suction temperature of machine will not raise.Thus, unlatching or the pass of N number of valve member are controlled according to the refrigerant pressure of indoor heat exchanger
Close, to change the refrigerant pressure of indoor heat exchanger.
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 refrigerant pressure of heat exchanger is more than or equal to first pressure and small indoors
3 valve members can be opened when equal to second pressure, other N-3 valve members (i.e. 3 valve members) are turned off.
For example, when air-conditioning system is freezed, the refrigerant pressure p of indoor heat exchanger is obtained, indoors heat exchanger
Refrigerant pressure p when being less than first pressure p0 (i.e. p ＜ p0), control any one unlatching in 6 valve members, and control it
Its 5 valve member is turned off；The refrigerant pressure p of heat exchanger is more than or equal to first pressure p0 and less than or equal to the second pressure indoors
During power p1 (i.e. p0≤p≤p1), any 3 unlatchings in 6 valve members are controlled, and control other 3 valve members to close；
When the refrigerant pressure p of heat exchanger is more than second pressure p1 (i.e. p ＞ p1) indoors, 6 valve members of control are opened.Wherein,
First pressure p0 can be 0.2 MPa, and second pressure P1 can be 1 MPa.
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, N is controlled according to the refrigerant pressure of indoor heat exchanger
Individual valve member.
That is, when air-conditioning system is freezed, if compressor low-frequency operation, according to the cold of indoor heat exchanger
The N number of valve member of matchmaker's Stress control.When compressor low frequency refrigerating operaton, the refrigerant flow rate of air-conditioning system is relatively low, and coolant quantity holds
Easily accumulate in outdoor heat exchanger, open more valve member, it is ensured that the coolant quantity for getting in heat exchanger is more sufficient
In addition, according to one embodiment of present invention, it is more than or equal to predeterminated frequency time control in the running frequency of air-conditioning system
N number of valve member is made to be all turned on.
That is, when air-conditioning system is freezed, if compressor high frequency is run, the whole pipeline of indoor heat exchanger
Whole participation actions, i.e., N number of valve member are all turned on, and are 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 indoor heat exchanger
Refrigerant pressure control N number of valve member to be turned on and off according to the refrigerant pressure of indoor heat exchanger.Thus, the present invention is implemented
Example method, can be turned on and off by control valve component to control the cold medium flux of air-conditioning system, so ensure into
The refrigerant for entering indoor heat exchanger is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature
Higher phenomenon is spent, so as to improve the refrigeration performance of air-conditioning, the reliability of compressor is improved, 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, 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, ensure that getting in the refrigerant of 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, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element 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 instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed 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 by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.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 directly contact, 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 and is 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 specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.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 different embodiments or example and the feature of different embodiments 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 indoor heat exchanger are connected by the 3rd pipeline with the compressor, the indoor heat exchanger
Second port be connected by the second pipeline with the outdoor 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 are connected in parallel or series with second pipeline, wherein,
N is the integer more than 1；
N number of valve member, N number of valve member are correspondingly arranged in N number of branch road, and each valve member is used to control correspondingly
Branch road is turned on and off；
Pressure sensing cell, the pressure sensing cell are used for the refrigerant pressure for detecting the indoor heat exchanger；
Control unit, described control unit are respectively connected with N number of valve member and the pressure sensing cell, the control
Unit is used to control being turned on and off for N number of valve member according to the refrigerant pressure of the indoor heat exchanger.
2. the control device of air-conditioning system according to claim 1, it is characterised in that multiple pressure ranges are constructed, it is described
Multiple pressure ranges and multiple unlatching quantity are corresponding respectively, wherein,
Described control unit is further used for obtaining the pressure range belonging to the refrigerant pressure of the indoor heat exchanger, and according to institute
Unlatching quantity corresponding to the pressure range belonging to the refrigerant pressure of indoor heat exchanger is stated to be controlled 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 refrigerant pressure of the indoor heat exchanger is less than first pressure, any one in N number of valve member is controlled
Open；
When the refrigerant pressure of the indoor heat exchanger is more than or equal to the first pressure and is less than or equal to second pressure, institute is controlled
Any M unlatching in N number of valve member is stated, wherein, M is the integer more than 1 and less than N；
When the refrigerant pressure of the indoor heat exchanger is more than the second pressure, 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 second port of indoor heat exchanger, the pressure sensing cell is arranged at the first port of the indoor heat exchanger, to pass through
The refrigerant pressure for detecting the first port of the indoor heat exchanger obtains the refrigerant pressure of the indoor heat exchanger.
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 changed when the running frequency of the air-conditioning system is less than predeterminated frequency according to the interior
The refrigerant pressure of hot device 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 indoor heat exchanger pass through the 3rd pipeline and the compression
Machine is connected, and the second port of the indoor heat exchanger is connected by the second pipeline with the outdoor heat exchanger, and N number of branch road is simultaneously
Connection connection, the N number of branch road being connected in parallel are connected in parallel or series with second pipeline, and N number of valve member is corresponding
It is arranged at N number of branch road, each valve member is used to controlling being turned on and off for corresponding branch road, and N is the integer more than 1, institute
The method of stating comprises the following steps：
Detect the refrigerant pressure of the indoor heat exchanger；
Being turned on and off for N number of valve member is controlled according to the refrigerant pressure of the indoor heat exchanger.
8. the control method of air-conditioning system according to claim 7, it is characterised in that multiple pressure ranges are constructed, it is described
Multiple pressure ranges and multiple unlatching quantity are corresponding respectively, described to control the N according to the refrigerant pressure of the indoor heat exchanger
Individual valve member is turned on and off, including：
Obtain the pressure range belonging to the refrigerant pressure of the indoor heat exchanger；
Quantity is opened corresponding to pressure range according to belonging to the refrigerant pressure of the indoor heat exchanger to N number of valve member
It is controlled.
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 refrigerant pressure of the indoor heat exchanger during refrigeration, including：
When the refrigerant pressure of the indoor heat exchanger is less than first pressure, control in N number of valve member it is any all the way
Open；
When the refrigerant pressure of the indoor heat exchanger is more than or equal to the first pressure and is less than or equal to second pressure, institute is controlled
Any M roads stated in N number of valve member are opened, wherein, M is the integer more than 1 and less than N；
When the refrigerant pressure of the indoor heat exchanger is more than the second pressure, 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 indoor heat exchange
The refrigerant pressure of the first port of device obtains the refrigerant pressure of the indoor heat exchanger.
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, institute is controlled according to the refrigerant pressure of the indoor heat exchanger
State 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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