CN105650819B - A kind of control method for multi-gang air-conditioner high-temperature refrigeration - Google Patents
A kind of control method for multi-gang air-conditioner high-temperature refrigeration Download PDFInfo
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- CN105650819B CN105650819B CN201610071151.5A CN201610071151A CN105650819B CN 105650819 B CN105650819 B CN 105650819B CN 201610071151 A CN201610071151 A CN 201610071151A CN 105650819 B CN105650819 B CN 105650819B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
- F24F2110/00—Control inputs relating to air properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A kind of control method for multi-gang air-conditioner high-temperature refrigeration, the control method include: the operational mode and operating status of real-time detection multi-gang air-conditioner；When detecting multi-gang air-conditioner refrigerating operaton, whether the operating status for detecting multi-gang air-conditioner meets systemic presupposition first condition；When the operating status of multi-gang air-conditioner meets the systemic presupposition first condition, the heat exchange state of outer machine module and system refrigerant out of service is adjusted, wherein the compressor of outer machine module out of service keeps halted state.In the control method, heat exchange can be carried out using the condenser and system refrigerant of outer machine module out of service in the outdoor machine system of multi-gang air-conditioner, the area of heat exchange is carried out so as to increase system refrigerant and outdoor machine system, while the high-pressure that outdoor machine system is effectively reduced, the refrigeration effect of multi-gang air-conditioner itself is improved, applicability is more preferably.
Description
Technical field
The invention belongs to multi-gang air-conditioner technical field more particularly to a kind of controls for multi-gang air-conditioner high-temperature refrigeration
Method.
Background technique
For multi-gang air-conditioner in high-temperature refrigeration, since outdoor environment temperature is higher, heat dissipation effect is poor, when outer machine is run
It often will cause higher high-pressure, so that system enters high voltage protective, press can only be run under lower frequency,
Even alarm is shut down, and seriously reduces the refrigeration effect of air-conditioning.
For such case that multi-gang air-conditioner occurs in high-temperature refrigeration, existing method is usually by adjusting inside and outside
The aperture of the electric expansion valve of machine carrys out the cold medium flux of regulating system, to reduce the high-pressure of system, but these methods exist
Also it will affect the refrigeration effect of air-conditioning itself while reducing system high pressure pressure, refrigerating efficiency is lower.
So in the prior art, the regulation method of the high-temperature refrigeration in relation to multi-gang air-conditioner is reducing the same of system high pressure
Shi Wufa promotes the refrigeration effect of air-conditioning itself, and refrigerating efficiency is lower.
Summary of the invention
In view of this, it is an object of the invention to propose a kind of control method for multi-gang air-conditioner high-temperature refrigeration,
To solve in the existing regulation method about multi-gang air-conditioner high-temperature refrigeration, sky can not be promoted while reducing high-pressure
Adjust the refrigeration effect of itself, the lower problem of refrigerating efficiency.In order to some aspects of the embodiment to disclosure have one it is basic
Understand, simple summary is shown below.The summarized section is not extensive overview, nor to determine key/critical composition member
Element or the protection scope for describing these embodiments.Its sole purpose is that some concepts are presented with simple form, in this, as rear
The preamble of the detailed description in face.
In some alternative embodiments, which includes: the operational mode and fortune of real-time detection multi-gang air-conditioner
Row state；When detecting multi-gang air-conditioner refrigerating operaton, whether the operating status for detecting multi-gang air-conditioner meets systemic presupposition
First condition；When the operating status of multi-gang air-conditioner meets the systemic presupposition first condition, outer machine out of service is adjusted
The heat exchange state of module and system refrigerant, wherein the compressor of outer machine module out of service keeps halted state.
Further, systemic presupposition first condition includes: that the value of the outdoor environment temperature of multi-gang air-conditioner is greater than systemic presupposition
Temperature threshold；And the value of the high-pressure of the outdoor machine system of the multi-gang air-conditioner is greater than the pressure threshold of systemic presupposition；
And there is outer machine module out of service in the outdoor machine system of the multi-gang air-conditioner.
Further, the process for adjusting the heat exchange state of outer machine module and system refrigerant out of service includes: a, opens
The electric expansion valve of an outer machine module in the outer machine module out of service, and the blower for starting the outer machine module carries out
Operating makes its condenser and the system refrigerant carry out heat exchange；B, after the first duration of systemic presupposition, according to what is detected
Variation adjustment and the system refrigerant of the high-pressure of the outdoor machine system carry out the described out of service outer of heat exchange
The quantity of machine module；C, a length of period when with the systemic presupposition the first repeats step b until stopping transporting the stopping
Until the heat exchange state of capable outer machine module and system refrigerant is adjusted.
Further, in stepb, according to the variation of the high-pressure of the outdoor machine system detected adjust with it is described
The process that system refrigerant carries out the quantity of the outer machine module out of service of heat exchange includes: to work as to detect the outdoor unit
When the value of the high-pressure of system is greater than the pressure threshold of the systemic presupposition, by electronics in the outer machine module out of service
The electric expansion valve of an outer machine module in the outer machine module that expansion valve is not switched on is opened, and starts the blower of the outer machine module
It is operated.
Further, in stepb, according to the variation of the high-pressure of the outdoor machine system detected adjust with it is described
The process that system refrigerant carries out the quantity of the outer machine module out of service of heat exchange includes: to work as to detect the outdoor unit
The value of the high-pressure of system is more than or equal to systemic presupposition first pressure value, less than or equal to the pressure threshold of the systemic presupposition
When, the operating status that the multi-gang air-conditioner remains current is constant.
Further, in stepb, according to the variation of the high-pressure of the outdoor machine system detected adjust with it is described
The process that system refrigerant carries out the quantity of the outer machine module out of service of heat exchange includes: to work as to detect the outdoor unit
When the value of the high-pressure of system is less than systemic presupposition first pressure value, by electronic expansion in the outer machine module out of service
The electric expansion valve for the outer machine module in outer machine module that valve is opened is closed, and stops the blower operating of the outer machine module.
Further, in step c, stop to the heat exchange state of the outer machine module out of service and system refrigerant into
The process of row adjustment includes: to work as to detect that the operational mode of multi-gang air-conditioner and operating status meet systemic presupposition second condition
When, stopping is adjusted the heat exchange state of the outer machine module and system refrigerant out of service.
Further, systemic presupposition second condition includes one of the following: the value of the high-pressure of outdoor machine system is pre- in system
If in the second duration, continuously less than systemic presupposition first pressure value；The value of the high-pressure of the outdoor machine system is pre- in system
If in third duration, continuously less than systemic presupposition second pressure value；Multi-gang air-conditioner heating operation；The multi-gang air-conditioner stops
Machine.
Further, the temperature threshold of systemic presupposition is 34-37 DEG C；The pressure threshold of systemic presupposition is 3-3.5MPa；System
Default first pressure value is 2.4-2.8MPa；Systemic presupposition second pressure value is 1.8-2.2MPa.
Further, 2-4 minutes a length of when systemic presupposition the first；It is 8-12 minutes a length of when systemic presupposition the second；Systemic presupposition
It is 0.8-1.2 minutes a length of when third.
Compared with prior art, the invention has the benefit that
The present invention provides a kind of control method for multi-gang air-conditioner high-temperature refrigeration, and in the control method, use is multi-joint
The condenser Yu system refrigerant of outer machine module out of service carry out heat exchange in the outdoor machine system of air conditioner, to increase
The area that system refrigerant and outdoor machine system carry out heat exchange mentions while the high-pressure that outdoor machine system is effectively reduced
The high refrigeration effect of multi-gang air-conditioner itself, applicability is more preferably.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Detailed description of the invention
Fig. 1 is the flow diagram of the control method for multi-gang air-conditioner high-temperature refrigeration of the embodiment of the present invention.
Specific embodiment
The following description and drawings sufficiently show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Embodiment only represents possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and
And the sequence of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The range of embodiment of the present invention includes the entire scope of claims and the institute of claims
There is obtainable equivalent.Herein, these embodiments of the invention individually or generally can be used term " invention "
It indicates, this is not meant to automatically limit this just for the sake of convenient, and if in fact disclose the invention more than one
The range of application is any single invention or inventive concept.
Before this clearly demarcated embodiment of specific introduction, one first is made to some technical terms of the invention and is explained.Herein,
The outdoor machine system of multi-gang air-conditioner is made of multiple outer machine modules, wherein each outer machine module can be used as an independence
Outer machine operating system, configure individual compressor, the equipment such as blower, condenser and electric expansion valve.Work as multi-gang air-conditioner
All interior machines in, only in part machine starting operation in the case where, the part of the multi-gang air-conditioner outside machine module can be in stop
The state only run, correspondingly, the compressor and blower of this part outer machine module out of service are in shape out of service
State.
It is illustrated presently in connection with attached drawing, shown in fig. 1 is in some optional embodiments for multi-gang air-conditioner high temperature
The flow chart of the control method of refrigeration.
As shown in Figure 1, in some alternative embodiments, disclosing a kind of control for multi-gang air-conditioner high-temperature refrigeration
Method, the control method include:
The operational mode and operating status of S11, real-time detection multi-gang air-conditioner；
S12, when detecting multi-gang air-conditioner refrigerating operaton, whether the operating status for detecting multi-gang air-conditioner meets system
Default first condition；
Wherein, systemic presupposition first condition includes: that the value of the outdoor environment temperature of multi-gang air-conditioner is greater than systemic presupposition
Temperature threshold；And the value of the high-pressure of the outdoor machine system of the multi-gang air-conditioner is greater than the pressure threshold of systemic presupposition；And
There is outer machine module out of service in the outdoor machine system of the multi-gang air-conditioner.In the specific implementation, user can basis
It needs arbitrarily to set the pressure threshold of the temperature threshold of systemic presupposition and systemic presupposition, for example, can be by systemic presupposition
Temperature threshold be set as 34-37 DEG C, it is preferred that the temperature threshold of the systemic presupposition is set as 35 DEG C；It can be pre- by system
If pressure threshold be set as 3-3.5MPa, it is preferred that the pressure threshold of the systemic presupposition is set as 3.2MPa.
S13, when the operating status of multi-gang air-conditioner meets the systemic presupposition first condition, adjust out of service outer
The heat exchange state of machine module and system refrigerant, wherein the compressor of outer machine module out of service keeps halted state.This mistake
Cheng Zhong has adjusted in the multi-gang air-conditioner by adjusting the heat exchange state of outer machine module out of service and system refrigerant and is
Refrigerant of uniting carries out the area of heat exchange with outdoor machine system, to realize the high-pressure and multi-connected machine to outdoor machine system simultaneously
The adjusting of the refrigeration effect of air-conditioning itself.
Further, the process for adjusting the heat exchange state of outer machine module and system refrigerant out of service includes: a, opens
The electric expansion valve of an outer machine module in the outer machine module out of service, and the blower for starting the outer machine module carries out
Operating makes its condenser and the system refrigerant carry out heat exchange, it is preferred that in the process, the electronics of outer machine module is swollen
Swollen valve is opened to maximum opening, and the revolving speed of its blower is adjusted to maximum (top) speed, in this manner it is ensured that multi-gang air-conditioner
The adjusting of the refrigerating efficiency of the high-pressure and multi-gang air-conditioner itself of outdoor machine system reaches optimum efficiency；B, by system
After default first duration, according to the variation of the high-pressure of the outdoor machine system detected adjustment and the system refrigerant into
The quantity of the outer machine module out of service of row heat exchange；C, a length of period when with the systemic presupposition the first, repetition are held
Row step b is until stopping being adjusted the heat exchange state of the outer machine module out of service and system refrigerant.
Further, in stepb, according to the variation of the high-pressure of the outdoor machine system detected adjust with it is described
The process that system refrigerant carries out the quantity of the outer machine module out of service of heat exchange includes: to work as to detect the outdoor unit
When the value of the high-pressure of system is greater than the pressure threshold of the systemic presupposition, by electronics in the outer machine module out of service
The electric expansion valve of an outer machine module in the outer machine module that expansion valve is not switched on is opened, and starts the blower of the outer machine module
Operated, it is preferred that the electric expansion valve of the outer machine module is opened to maximum opening, and by the revolving speed of its blower adjust to
Maximum (top) speed, in this manner it is ensured that the system of the high-pressure and multi-gang air-conditioner itself to the outdoor machine system of multi-gang air-conditioner
The adjusting of cold efficiency reaches optimum efficiency, in the process, when the value for the high-pressure for detecting the outdoor machine system is big
When the pressure threshold of the systemic presupposition, if detecting, the electric expansion valve of all outer machine modules out of service has been beaten
It opens, then maintains current operating status constant；Or, being when the value for the high-pressure for detecting the outdoor machine system is more than or equal to
Unite default first pressure value, less than or equal to the systemic presupposition pressure threshold when, the multi-gang air-conditioner maintains current fortune
Row state is constant；Or, when detecting that the value of high-pressure of the outdoor machine system is less than systemic presupposition first pressure value, it will
The electric expansion valve for the outer machine module in outer machine module that electric expansion valve is opened in the outer machine module out of service
It closes, and stops the blower operating of the outer machine module, in the process, when the high-pressure for detecting the outdoor machine system
When value is less than systemic presupposition first pressure value, if detecting, the electric expansion valve of all outer machine modules out of service has been closed
It closes, then maintains current operating status constant.
Wherein, user, which can according to need, arbitrarily sets the first duration of systemic presupposition and systemic presupposition first pressure value
It is fixed, for example, the first duration of systemic presupposition can be set as to 2-4 minutes, it is preferred that first duration of systemic presupposition to be set as
3 minutes；Systemic presupposition first pressure value can be set as 2.4-2.8MPa, it is preferred that by the systemic presupposition first pressure value
It is set as 2.5MPa.
Further, in step c, stop to the heat exchange state of the outer machine module out of service and system refrigerant into
The process of row adjustment includes: to work as to detect that the operational mode of multi-gang air-conditioner and operating status meet systemic presupposition second condition
When, stopping is adjusted the heat exchange state of the outer machine module and system refrigerant out of service.
Further, systemic presupposition second condition includes one of the following: the value of the high-pressure of the outdoor machine system is being
It unites in default second duration, continuously less than systemic presupposition first pressure value；The value of the high-pressure of the outdoor machine system is being
It unites in default third duration, continuously less than systemic presupposition second pressure value；The multi-gang air-conditioner heating operation；The multi-connected machine
Air-conditioning is shut down.
Wherein, user can according to need arbitrarily pre- to the second duration of systemic presupposition, systemic presupposition third duration and system
If second pressure value is set, for example, the second duration of systemic presupposition can be set as to 8-12 minutes, it is preferred that be by this
Default second duration of uniting is set as 10 minutes；Systemic presupposition third duration can be set as to 0.8-1.2 minutes, it is preferred that will
The systemic presupposition third duration is set as 1 minute；Systemic presupposition second pressure value can be set as 1.8-2.2MPa, preferably
, which is set as 2MPa.
In control method of the invention, using the cold of outer machine module out of service in the outdoor machine system of multi-gang air-conditioner
Condenser and system refrigerant carry out heat exchange, to increase the area of system refrigerant and outdoor machine system progress heat exchange, are having
While effect reduces the high-pressure of outdoor machine system, the refrigeration effect of multi-gang air-conditioner itself is improved, applicability is more preferably.
In short, the above description is only an embodiment of the present invention, it is merely to illustrate the principle of the present invention, is not intended to limit this
The protection scope of invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on, should all
It is included within protection scope of the present invention.
Claims (8)
1. a kind of control method for multi-gang air-conditioner high-temperature refrigeration characterized by comprising
The operational mode and operating status of real-time detection multi-gang air-conditioner；
When detecting multi-gang air-conditioner refrigerating operaton, whether the operating status for detecting multi-gang air-conditioner meets systemic presupposition first
Condition；
When the operating status of multi-gang air-conditioner meets the systemic presupposition first condition, adjust outer machine module out of service with
The heat exchange state of system refrigerant, wherein the compressor of outer machine module out of service keeps halted state；
Wherein, the systemic presupposition first condition includes: that the value of the outdoor environment temperature of the multi-gang air-conditioner is pre- greater than system
If temperature threshold；And the value of the high-pressure of the outdoor machine system of the multi-gang air-conditioner is greater than the pressure threshold of systemic presupposition
Value；And there is outer machine module out of service in the outdoor machine system of the multi-gang air-conditioner；
The process of the adjustment outer machine module and the heat exchange state of system refrigerant out of service includes:
A, the electric expansion valve of an outer machine module in the outer machine module out of service is opened, and starts the outer machine module
Blower operated, so that its condenser and the system refrigerant is carried out heat exchange；
B, after the first duration of systemic presupposition, according to the variation of the high-pressure of the outdoor machine system detected adjustment with
The system refrigerant carries out the quantity of the outer machine module out of service of heat exchange；
C, a length of period when with the systemic presupposition the first repeats step b until stopping to the outer machine out of service
Until module and the heat exchange state of system refrigerant are adjusted.
2. control method according to claim 1, which is characterized in that in stepb, the room that the basis detects
The variation adjustment of the high-pressure of outer machine system carries out the outer machine module out of service of heat exchange with the system refrigerant
Quantity process include: when detect the outdoor machine system high-pressure value be greater than the systemic presupposition pressure threshold
When value, by the electricity of an outer machine module in electric expansion valve is not switched in the outer machine module out of service outer machine module
Sub- expansion valve is opened, and the blower for starting the outer machine module is operated.
3. control method according to claim 1, which is characterized in that in stepb, the room that the basis detects
The variation adjustment of the high-pressure of outer machine system carries out the outer machine module out of service of heat exchange with the system refrigerant
Quantity process include: when detect the outdoor machine system high-pressure value be more than or equal to systemic presupposition first pressure
Value, less than or equal to the systemic presupposition pressure threshold when, the operating status that the multi-gang air-conditioner remains current is constant.
4. control method according to claim 1, which is characterized in that in stepb, the room that the basis detects
The variation adjustment of the high-pressure of outer machine system carries out the outer machine module out of service of heat exchange with the system refrigerant
Quantity process include: when detect the outdoor machine system high-pressure value be less than systemic presupposition first pressure value
When, the electronics for the outer machine module in outer machine module that electric expansion valve in the outer machine module out of service is opened is swollen
Swollen valve is closed, and stops the blower operating of the outer machine module.
5. according to control method described in claim 2-4 any one, which is characterized in that in step c, the stopping is to institute
Stating the process that the heat exchange state of outer machine module out of service and system refrigerant is adjusted includes: when detecting multi-connected machine sky
When the operational mode and operating status of tune meet systemic presupposition second condition, stop to the outer machine module out of service be
The heat exchange state of system refrigerant is adjusted.
6. control method according to claim 5, which is characterized in that the systemic presupposition second condition include it is following it
One:
The value of the high-pressure of the outdoor machine system is in the second duration of systemic presupposition, continuously less than systemic presupposition first pressure
Value；
The value of the high-pressure of the outdoor machine system is in systemic presupposition third duration, continuously less than systemic presupposition second pressure
Value；
The multi-gang air-conditioner heating operation；
The multi-gang air-conditioner is shut down.
7. control method according to claim 6, which is characterized in that the temperature threshold of the systemic presupposition is 34-37 DEG C；
The pressure threshold of the systemic presupposition is 3-3.5MPa；The systemic presupposition first pressure value is 2.4-2.8MPa；The system
Default second pressure value is 1.8-2.2MPa.
8. control method according to claim 7, which is characterized in that 2-4 minutes a length of when the systemic presupposition the first；Institute
It states 8-12 minutes a length of when systemic presupposition the second；It is 0.8-1.2 minutes a length of when the systemic presupposition third.
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