CN114060966A - Outdoor unit module, control method and multi-module multi-connected unit - Google Patents

Outdoor unit module, control method and multi-module multi-connected unit Download PDF

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Publication number
CN114060966A
CN114060966A CN202111369501.3A CN202111369501A CN114060966A CN 114060966 A CN114060966 A CN 114060966A CN 202111369501 A CN202111369501 A CN 202111369501A CN 114060966 A CN114060966 A CN 114060966A
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CN
China
Prior art keywords
outdoor unit
module
unit module
heat exchange
pipeline
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Granted
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CN202111369501.3A
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Chinese (zh)
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CN114060966B (en
Inventor
邱天
金孟孟
焦华超
武连发
高晗
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Priority to CN202111369501.3A priority Critical patent/CN114060966B/en
Publication of CN114060966A publication Critical patent/CN114060966A/en
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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/10—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an outdoor unit module, a control method and a multi-module multi-connected unit. The outdoor unit module comprises a power part and a heat exchange part, the power part is communicated with a first port of the indoor unit through a first pipeline, the heat exchange part is communicated with a second port of the indoor unit through a second pipeline, the power part is communicated with the heat exchange part through a pipeline, and the outdoor unit module further comprises: and the first port of the communication pipeline is communicated with the pipeline between the power part and the heat exchange part, and the second port of the communication pipeline is communicated with the communication pipelines of other outdoor unit modules and is used for sharing the power part or the heat exchange part with other outdoor unit modules through the communication pipeline when the power part or the heat exchange part of the outdoor unit module breaks down. By the aid of the method and the device, components which do not have faults in the outdoor unit module can be fully utilized, and the heat exchange effect of the whole unit is improved.

Description

Outdoor unit module, control method and multi-module multi-connected unit
Technical Field
The invention relates to the technical field of units, in particular to an outdoor unit module, a control method and a multi-module multi-connected unit.
Background
In the current multi-split air conditioner unit, multi-outdoor units are arranged in parallel in a modularized mode, so that various engineering requirements can be flexibly met, and the multi-outdoor unit occupies a large market.
In a multi-split air conditioner set with a plurality of outdoor unit modules connected in parallel, if a key component (such as a fan, a compressor and the like) of one of the modules fails, the module is shut down and is suspended for use, so that the use of the whole multi-split air conditioner system is influenced, and the user experience is finally influenced.
In the prior art, aiming at the above situation, a temporary emergency operation control method such as module emergency control, fan emergency control, compressor emergency control and the like is generally adopted, so that the user requirements can be met in a short time when a maintenance worker waits for arriving at the site. The module emergency control means that in a system in which a plurality of outdoor unit modules are connected in parallel, if one or more components of one of the modules fail and cannot be used, and when other modules can be used normally, the failed module is set as an emergency module, and the other modules can be operated normally without being affected. However, in the prior art, the outdoor unit module is controlled as a whole, and when only part of the components of the outdoor unit module are failed, the whole outdoor unit module cannot be used, that is, other normal components cannot participate in operation, so that the heat exchange effect of the whole multi-connected unit is reduced.
Aiming at the problem that in the prior art, when only partial components of an outdoor unit module are in fault, the whole outdoor unit module cannot be used, and further the heat exchange effect of a unit is reduced, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides an outdoor unit module, a control method and a multi-module multi-connected unit, and aims to solve the problem that in the prior art, when only part of outdoor unit modules are failed, the whole outdoor unit module cannot be used, and further the heat exchange effect of the unit is reduced.
In order to solve the technical problems, the invention provides an outdoor unit module which comprises a power part and a heat exchange part, wherein the power part is communicated with a first port of an indoor unit through a first pipeline, the heat exchange part is communicated with a second port of the indoor unit through a second pipeline, and the power part is communicated with the heat exchange part through a pipeline;
the outdoor unit module further includes: and the first port of the communication pipeline is communicated with the pipeline between the power part and the heat exchange part, and the second port of the communication pipeline is communicated with the communication pipelines of other outdoor unit modules and is used for sharing the power part or the heat exchange part with other outdoor unit modules through the communication pipeline when the power part or the heat exchange part of the outdoor unit module breaks down.
Furthermore, a communicating valve is arranged on the communicating pipeline.
Further, the power section includes:
the outlet end of the compressor is communicated with a first interface of the four-way valve; and a second interface of the four-way valve is communicated with a first port of the indoor unit through a first pipeline, a third interface is communicated with a gas suction end of the compressor, and a fourth interface is communicated with the heat exchanging part.
Further, the power section further includes:
and the gas-liquid separator is arranged between the third interface of the four-way valve and the air suction end of the compressor.
Further, the power section further includes:
and the oil separator is arranged between the exhaust end of the compressor and the first interface of the four-way valve.
Further, the power section further includes:
and the one-way valve is arranged between the exhaust end of the compressor and the first interface of the four-way valve.
Further, the heat exchange portion includes:
the first port of the condenser is communicated with the fourth port of the four-way valve, the second port of the condenser is communicated with the second port of the indoor unit through a second pipeline, and the fan is arranged adjacent to the condenser.
Further, the heat exchanging part further includes:
and the heat exchange expansion valve is arranged on the second pipeline.
Further, the heat exchanging part further includes:
and the subcooler is arranged on the second pipeline.
The invention also provides a multi-module multi-connected unit, which comprises at least two outdoor unit modules, wherein communication pipelines of different outdoor unit modules are communicated with each other; the first pipeline of each outdoor unit module is communicated to a first main pipeline which is communicated with a first port of the indoor unit; and the second pipeline of each outdoor unit module is communicated to a second main pipeline which is communicated with a second port of the indoor unit.
The invention also provides a control method, which is applied to the multi-module multi-connected unit and comprises the following steps:
determining the fault type after the outdoor unit module in the multi-module multi-connected unit fails;
if the power part of the outdoor unit module has a fault, controlling the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit to share the power part which normally operates;
if the heat exchange part of the outdoor unit module fails, controlling the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit to share the heat exchange part which normally operates;
the pipeline between the power part and the heat exchanging part is communicated with a first port of a communicating pipeline, and a second port of the communicating pipeline is communicated with communicating pipelines of other outdoor unit modules.
Further, if the power unit of the outdoor unit module fails, controlling the outdoor unit module and the other outdoor unit modules in the multi-module multi-connected unit to share the power unit which normally operates, includes:
and if the power part of the outdoor unit module has a fault, controlling the heat exchange part of the outdoor unit module to normally operate, simultaneously controlling the power part of the outdoor unit module to stop operating, and controlling the power parts which normally operate in the other outdoor unit modules in the multi-module multi-connected unit to provide power for the outdoor unit module with the fault through the communication pipeline.
Further, if the heat exchange unit of the outdoor unit module fails, controlling the outdoor unit module and the other outdoor unit modules in the multi-module multi-connected unit to share the heat exchange unit which normally operates, includes:
and if the heat exchange part of the outdoor unit module fails, controlling the power part of the outdoor unit module to normally operate, simultaneously controlling the heat exchange part of the outdoor unit module to stop operating, and controlling the normally operating heat exchange parts in the other outdoor unit modules in the multi-module multi-connected unit to exchange heat for the failed outdoor unit module through the communication pipeline.
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described control method.
According to the technical scheme, the outdoor unit module comprises a power part, a heat exchange part and a communication pipeline, wherein a first port of the communication pipeline is communicated with the pipeline between the power part and the heat exchange part, and a second port of the communication pipeline is used for communicating the communication pipelines of other outdoor unit modules. Through the communication pipeline, when the power part or the heat exchange part of the outdoor unit module breaks down, the power part or the heat exchange part is shared by the communication pipeline and other outdoor unit modules, so that heat exchange circulation is realized. The components which do not break down in the outdoor unit module can be fully utilized, and the heat exchange effect of the whole unit is improved.
Drawings
Fig. 1 is a structural view of an outdoor unit module according to an embodiment of the present invention;
fig. 2 is a structural view of another outdoor unit module according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first multi-module multi-connected unit refrigeration mode according to an embodiment of the invention;
fig. 4 is a schematic diagram of a second multi-module multi-connected unit refrigerating mode according to the embodiment of the invention;
fig. 5 is a schematic diagram of a third multi-module multi-connected unit in a heating mode according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a fourth multi-module multi-connected unit heating mode according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a fifth multi-module multi-connected unit refrigerating mode according to the embodiment of the invention;
fig. 8 is a schematic diagram of a sixth multi-module multi-connected unit refrigerating mode according to the embodiment of the invention;
fig. 9 is a schematic diagram of a seventh multi-module multi-connected unit heating mode according to the embodiment of the invention;
fig. 10 is a schematic diagram of an eighth multi-module multi-connected unit heating mode according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a ninth multi-module multi-connected unit refrigerating mode according to an embodiment of the present invention;
fig. 12 is a schematic diagram of a tenth multi-module multi-connected unit refrigerating mode according to an embodiment of the present invention;
fig. 13 is a schematic diagram of an eleventh multi-module multi-connected unit heating mode according to an embodiment of the present invention;
fig. 14 is a schematic diagram of a twelfth multi-module multi-connected unit heating mode according to an embodiment of the present invention;
fig. 15 is a flowchart of a control method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe lines in embodiments of the present invention, these lines should not be limited by these terms. These terms are only used to distinguish between different locations of the pipeline. For example, a first circuit may also be referred to as a second circuit, and similarly, a second circuit may also be referred to as a first circuit, without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
Fig. 1 is a structural diagram of an outdoor unit module according to an embodiment of the present invention, and as shown in fig. 1, the outdoor unit module includes a power unit 1 and a heat exchanging unit 2, the power unit 1 is connected to a first port of an indoor unit through a first pipeline, the heat exchanging unit 2 is connected to a second port of the indoor unit through a second pipeline, and the power unit 1 and the heat exchanging unit 2 are connected through a pipeline.
In a multi-split air conditioner set with a plurality of outdoor unit modules connected in parallel, if a key component (such as a fan, a compressor and the like) of one of the modules fails, the module is shut down and is suspended for use, so that the use of the whole multi-split air conditioner system is influenced, and the user experience is finally influenced. In the prior art, aiming at the above situation, a temporary emergency operation control method such as module emergency control, fan emergency control, compressor emergency control and the like is generally adopted, so that the user requirements can be met in a short time in the process of waiting for maintenance personnel to rush to the site. The module emergency control means that in a system in which a plurality of outdoor unit modules are connected in parallel, if one or more components of one of the modules fail and cannot be used, and when other modules can be used normally, the failed module is set as an emergency module, and the other modules can be operated normally without being affected. However, in the prior art, the outdoor unit module is controlled as a whole, and when only part of the components of the outdoor unit module are failed, the whole outdoor unit module cannot be used, that is, other normal components cannot participate in operation, which results in waste of resources.
In order to fully utilize each component of each outdoor unit module, wherein when some components of the outdoor unit module are failed and cannot be used, the components which are not failed are fully utilized, the outdoor unit module further comprises: and the first port of the communication pipeline 3 is communicated with the pipeline between the power part 1 and the heat exchange part 2, and the second port of the communication pipeline 3 is communicated with the communication pipelines of other outdoor unit modules. The outdoor unit module is used for sharing the power part or the heat exchange part with other outdoor unit modules through the communication pipeline when the power part or the heat exchange part of the outdoor unit module breaks down, so that heat exchange circulation is realized.
The outdoor unit module of the embodiment is provided with a communicating pipeline, a first port of the communicating pipeline is communicated with a pipeline between the power part and the heat exchange part, and a second port of the communicating pipeline is used for communicating pipelines of other outdoor unit modules. Through the communication pipeline, when the power part or the heat exchange part of the outdoor unit module breaks down, the power part or the heat exchange part is shared by the communication pipeline and other outdoor unit modules, so that heat exchange circulation is realized. The components which do not break down in the outdoor unit module can be fully utilized, and the heat exchange effect of the whole unit is improved.
In order to control the connection or disconnection of the communication pipeline, as shown in fig. 1, a communication valve EXV1 is disposed on the communication pipeline 3, and the communication valve EXV1 may be an electromagnetic valve, an electric ball valve, or other components capable of controlling the connection or disconnection of the communication pipeline or the refrigerant flow rate.
Example 2
In this embodiment, another outdoor unit module is provided, and fig. 2 is a structural diagram of another outdoor unit module according to an embodiment of the present invention, and as shown in fig. 2, the power unit 1 in the above embodiment includes: the compressor 11 and the four-way valve 12, the outlet end of the compressor 11 is communicated with the first interface of the four-way valve 12; a second port of the four-way valve 12 is communicated with a first port of the indoor unit through a first pipeline, a third port is communicated with a suction end of the compressor 11, and a fourth port is communicated with the heat exchanging part 2. The first pipeline and the first port of the indoor unit are provided with a first valve EV 1.
In order to avoid the liquid impact of the compressor 11, the power unit 1 further includes: and a gas-liquid separator 13 provided between the third port of the four-way valve 12 and the suction end of the compressor 11.
In order to separate the lubricating oil in the refrigerant by mixing the lubricating oil of the compressor 11 into the refrigerant during the actual operation, the power unit further includes: and an oil separator 14 disposed between the discharge end of the compressor 11 and the first port of the four-way valve 12, for separating the lubricating oil mixed in the gas refrigerant, and dripping and collecting the lubricating oil at the bottom of the tank of the oil separator 14.
In order to avoid the reverse flow of the refrigerant, the power unit 1 further includes: and a check valve 15 disposed between a discharge end of the compressor 11 and a first port of the four-way valve 12.
For realizing the heat transfer effect, above-mentioned heat transfer portion includes: a condenser 21 and a fan 22, wherein a first port of the condenser 21 is communicated with a fourth port of the four-way valve 12, a second port is communicated with a second port of the indoor unit through a second pipeline, a second valve EV2 is arranged between the second pipeline and the indoor unit, and the fan 22 is arranged adjacent to the condenser 21 and used for accelerating the air flow near the surface of the condenser 21.
In order to achieve the throttling effect, the heat exchanging portion 2 further includes: a heat exchange expansion valve EXV2, and a heat exchange expansion valve EXV2 are provided on the second line.
In order to cool the refrigerant, the heat exchanging part further includes: and a subcooler 23 provided in the second pipe.
In the outdoor unit module of the present embodiment, if the outdoor unit module fails, the outdoor unit module may be set to the emergency mode, and other outdoor unit modules may not be affected by the outdoor unit module. When the heat exchange part of the outdoor unit module is in the emergency state, the fan 22 of the outdoor unit module is turned off, and the heat exchange expansion valve EXV2 is opened for a preset number of steps, wherein the preset number of steps is smaller than the number of steps for opening the heat exchange expansion valve EXV2 when the outdoor unit module is in the normal state, and if the power part of the outdoor unit module is in the emergency state, the compressor 11 and the four-way valve 12 of the outdoor unit module are controlled to be forcibly turned off. As long as at least one heat exchanging part and the power part operate normally at the same time, the multi-split system can operate normally, and the user requirements are met.
Example 3
The embodiment provides a multi-module multi-connected unit, which comprises at least two outdoor unit modules in the above embodiments, wherein communication pipelines 3 of different outdoor unit modules are communicated with each other; the first pipeline of each outdoor unit module is communicated to a first main pipeline which is communicated with a first port of the indoor unit; the second pipeline of each outdoor unit module is communicated to a second main pipeline, and the second main pipeline is communicated with a second port of the indoor unit.
The heat exchange process of the multi-module multi-unit set including two outdoor unit modules, i.e., a first outdoor unit module and a second outdoor unit module, in the case that the multi-module multi-unit set operates in the cooling mode and the fan 22 of the first outdoor unit module fails (i.e., the heat exchange unit of the first outdoor unit module fails) is described below with reference to fig. 3:
fig. 3 is a schematic diagram illustrating a first multi-module multi-connected unit refrigerating mode according to an embodiment of the present invention, as shown in fig. 3, in case that the fan 22 of the first outdoor unit module is out of order and the multi-connected unit operates in the cooling mode, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is turned off, if the heat exchange expansion valve EXV2 is closed, refrigerant will be stored in the condenser 21, and in addition, the driving plate of the compressor adopts refrigerant for heat dissipation, and a certain refrigerant circulation is also needed to ensure the heat dissipation effect, therefore, the heat exchange expansion valve EXV2 is opened for a preset number of steps, when the preset number of steps is smaller than the number of steps of opening the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the fan 22 is closed, the communicating valve EXV1 is opened, the compressor 11 of the second outdoor unit module is opened, the four-way valve 12 is powered off, the heat exchange expansion valve EXV2 is opened, the fan 22 is opened, and the communicating valve EXV1 is opened.
In the first outdoor unit module, the refrigerant is discharged from the compressor 11, passes through the oil separator 14 and the four-way valve 12, and because the number of steps for opening the heat exchange expansion valve EXV2 is small, only a small portion of the refrigerant flows through the heat expansion valve EXV2 of the first outdoor unit module, and a large portion of the refrigerant can only enter the condenser 21 of the second outdoor unit module through the communication valve EXV1 on the communication pipeline 3 for heat exchange. After the heat exchange is finished, the refrigerant enters the indoor unit through the subcooler 23 and the second valve EV2 of the second outdoor unit module, and finally returns to the compressors 11 of the first outdoor unit module and the second outdoor unit module through the first valve EV1 and the gas-liquid separator 13 of the first outdoor unit module and the second outdoor unit module respectively to finish the refrigeration cycle after the indoor heat exchange is finished.
With reference to fig. 4, a heat exchange process of the multi-module multi-connected unit including N outdoor unit modules when the multi-module multi-connected unit operates in a cooling mode and the fan 22 of the first outdoor unit module fails (i.e., the heat exchange portion of the first outdoor unit module fails) is described as follows:
fig. 4 is a schematic diagram of a second multi-module multi-connected unit in a cooling mode according to an embodiment of the present invention, as shown in fig. 4, when the fan 22 of the first outdoor unit module fails and the multi-connected unit operates in the cooling mode, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is turned on by a preset number of steps, where the preset number of steps is smaller than the number of steps of turning on the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the fan 22 is turned off, the communication valve EXV1 is turned on, the compressor 11 of the second outdoor unit module to the nth outdoor unit module is turned on, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is turned on, the fan 22 is turned on, and the communication valve EXV1 is turned on.
In the first outdoor unit module, the refrigerant is discharged from the compressor 11, passes through the oil separator 14 and the four-way valve 12, and because the number of steps for opening the heat exchange expansion valve EXV2 is small, only a small portion of the refrigerant flows through the heat expansion valve EXV2 of the first outdoor unit module, and most of the refrigerant can only enter the condenser 21 from the second outdoor unit module to the nth outdoor unit module through the communication valve EXV1 on the communication pipeline 3 for heat exchange. After the heat exchange is finished, the refrigerant enters the indoor unit through the subcooler 23 and the second valve EV2 from the second outdoor unit module to the Nth outdoor unit module, and finally returns to the compressor 11 from the first outdoor unit module to the Nth outdoor unit module through the first valve EV1 and the gas-liquid separator 13 respectively after the indoor heat exchange is finished, so that the refrigeration cycle is finished.
The following describes, with reference to fig. 5, a heat exchange process of the multi-module multi-unit set when the multi-module multi-unit set includes two outdoor unit modules, i.e., a first outdoor unit module and a second outdoor unit module, and the multi-module multi-unit set operates in a heating mode and the fan 22 of the first outdoor unit module fails (i.e., the heat exchange portion of the first outdoor unit module fails):
fig. 5 is a schematic diagram of a third multi-module multi-connected unit in a heating mode according to an embodiment of the present invention, as shown in fig. 5, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is powered on, and the heat exchange expansion valve EXV2 is turned on for a preset number of steps, where the preset number of steps is smaller than the number of steps for turning on the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the fan 22 is turned off, the communication valve EXV1 is turned on, the compressor 11 of the second outdoor unit module is turned on, the four-way valve 12 is powered on, the heat exchange expansion valve EXV2 is turned on, the fan 22 is turned on, and the communication valve EXV1 is turned on.
In the first outdoor unit module and the second outdoor unit module, the refrigerant is discharged from the respective compressor 11, and enters the indoor unit through the four-way valve 12 and the first valve EV1, after the indoor heat exchange is completed, because the step number of opening the heat exchange expansion valve EXV2 of the first outdoor unit module is small, only a small part of the refrigerant flows through the heat expansion valve EXV2 of the first outdoor unit module, most of the refrigerant can only flow to the heat exchange part of the second outdoor unit module through the communication valve EXV1 on the communication pipeline 3, and enters the condenser 21 of the second outdoor unit module through the second valve EV2, the subcooler 23 and the heat exchange expansion valve EXV2 of the second outdoor unit module to exchange heat, after the heat exchange is completed, the refrigerant can be divided into two paths, one path returns to the compressor 11 of the second outdoor unit module through the four-way valve 12 and the gas-liquid separator 13 of the second outdoor unit module, and the other path enters the four-way valve 12 and the gas-liquid separator 13 of the first outdoor unit module through the communication pipeline 3, finally, the refrigerant returns to the compressor 11 of the first outdoor unit module to complete the heating cycle.
With reference to fig. 6, a heat exchange process of the multi-module multi-connected unit including N outdoor unit modules when the multi-module multi-connected unit operates in a heating mode and the fan 22 of the first outdoor unit module fails (i.e., the heat exchange portion of the first outdoor unit module fails) is described as follows:
fig. 6 is a schematic diagram of a fourth multi-module multi-connected unit heating mode according to an embodiment of the present invention, as shown in fig. 6, when the fan 22 of the first outdoor unit module fails and the multi-connected unit operates in the heating mode, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is powered on, the heat exchange expansion valve EXV2 is turned on for a preset number of steps, where the preset number of steps is smaller than the number of steps for turning on the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the fan 22 is turned off, the communication valve EXV1 is turned on, the compressor 11 of the second outdoor unit module to the nth outdoor unit module is turned on, the four-way valve 12 is powered on, the heat exchange expansion valve EXV2 is turned on, the fan 22 is turned on, and the communication valve EXV1 is turned on.
In the first outdoor unit module to the nth outdoor unit module, the refrigerant is discharged from the respective compressor 11, and enters the indoor unit through the four-way valve 12 and the first valve EV1, after the indoor heat exchange is completed, only a small portion of the refrigerant flows through the thermal expansion valve EXV2 of the first outdoor unit module because the opening number of the thermal expansion valve EXV2 of the first outdoor unit module is small, most of the refrigerant can only flow to the heat exchange portion from the second outdoor unit module to the nth outdoor unit module through the communicating valve EXV1 on the communicating pipeline 3, and enters the condenser 21 from the second outdoor unit module to the nth outdoor unit module through the second valve EV2, the subcooler 23 and the thermal expansion valve EXV2 of the second outdoor unit module to the nth outdoor unit module for heat exchange, the refrigerant after the heat exchange is completed in the condenser 21 from the second outdoor unit module to the nth outdoor unit module is equally divided into two paths, and one path returns to the compressor 11 of the outdoor unit through the four-way valve 12 and the gas-liquid separator 13 of the refrigerant to complete the cycle, the other path enters a four-way valve 12 and a gas-liquid separator 13 of the first outdoor unit module through a communication pipeline 3 and finally returns to a compressor 11 of the first outdoor unit module to complete a heating cycle.
The heat exchange process of the multi-module multi-unit set including two outdoor unit modules, i.e., a first outdoor unit module and a second outdoor unit module, in the case that the multi-module multi-unit set operates in the cooling mode and the compressor 11 of the first outdoor unit module fails (i.e., the power unit of the first outdoor unit module fails) is described below with reference to fig. 7:
fig. 7 is a schematic diagram of a fifth multi-module multi-connected unit in a cooling mode according to an embodiment of the present invention, as shown in fig. 7, due to a failure, the compressor 11 of the first outdoor unit module is turned off, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is opened, the fan 22 is opened, and the communication valve EXV1 is opened; and the compressor 11 of the second outdoor unit module is started, the four-way valve 12 is powered off, the heat exchange expansion valve EXV2 is started, the fan 22 is started, and the communication valve EXV1 is started.
In the second outdoor unit module, the refrigerant is discharged from the compressor 11, passes through the oil separator 14 and the four-way valve 12, and is divided into two paths at this time, one path of the refrigerant enters the heat exchange portion of the second outdoor unit module for heat exchange, the other path of the refrigerant enters the heat exchange portion of the first outdoor unit module for heat exchange through the communication pipeline 3, the two paths of the refrigerant are respectively merged into the second main pipeline after the heat exchange is completed and enter the indoor unit, and finally return to the compressor 11 of the second outdoor unit module through the first valve EV1 and the gas-liquid separator 13 of the second outdoor unit module after the indoor heat exchange is completed, so that the whole refrigeration cycle is completed.
With reference to fig. 8, a heat exchange process of the multi-module multi-connected unit including N outdoor unit modules when the multi-module multi-connected unit operates in a cooling mode and the compressor 11 of the first outdoor unit module fails (i.e., the power unit of the first outdoor unit module fails) will be described as follows:
fig. 8 is a schematic diagram illustrating a sixth multi-module multi-connected unit refrigeration mode according to an embodiment of the present invention, where as shown in fig. 8, due to a failure, the compressor 11 of the first outdoor unit module is turned off, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is opened, the fan 22 is opened, and the communication valve EXV1 is opened; and starting a compressor 11 from the second outdoor unit module to the Nth outdoor unit module, switching off the four-way valve 12, starting a heat exchange expansion valve EXV2, starting a fan 22 and starting a communication valve EXV 1.
In the second outdoor unit module to the nth outdoor unit module, the refrigerant is discharged from the respective compressor 11, passes through the respective oil separator 14 and the four-way valve 12, and then is divided into two paths, one path enters the respective heat exchange portion for heat exchange, the other path enters the heat exchange portion of the first outdoor unit module for heat exchange through the communication pipeline 3, the two paths of refrigerant are converged into the second main pipeline after the heat exchange is completed respectively, and enter the indoor unit, and finally return to the respective compressor 11 through the respective first valve EV1 and the gas-liquid separator 13 of the second outdoor unit module to the nth outdoor unit module after the indoor heat exchange is completed, so that the whole refrigeration cycle is completed.
The heat exchange process of the multi-module multi-unit set including two outdoor unit modules, i.e., a first outdoor unit module and a second outdoor unit module, in the heating mode of the multi-module multi-unit set and in the case that the compressor 11 of the first outdoor unit module fails (i.e., the power unit of the first outdoor unit module fails) will be described with reference to fig. 9:
fig. 9 is a schematic diagram of a seventh multi-module multi-connected unit heating mode according to the embodiment of the present invention, as shown in fig. 9, due to a fault, the compressor 11 of the first outdoor unit module is turned off, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is opened, the fan 22 is opened, and the communication valve EXV1 is opened; and a compressor 11 of the second outdoor unit module is started, the four-way valve 12 is electrified, the heat exchange expansion valve EXV2 is started, the fan 22 is started, and the communication valve EXV1 is started.
In the second outdoor unit module, the refrigerant is discharged from the compressor 11, enters the indoor unit through the four-way valve 12 and the first valve EV1, and after heat exchange in the indoor unit is completed, the refrigerant respectively enters the heat exchange portions of the first outdoor unit module and the second outdoor unit module, and after heat exchange in the first outdoor unit module is completed, the refrigerant is gathered with the refrigerant after heat exchange in the second outdoor unit module through the communication pipeline 3, and then returns to the compressor 11 of the second outdoor unit module through the four-way valve 12 and the gas-liquid separator 13 of the second outdoor unit module, so that a heating cycle is completed.
With reference to fig. 10, a heat exchange process of the multi-module multi-connected unit including N outdoor unit modules when the multi-module multi-connected unit operates in a heating mode and the compressor 11 of the first outdoor unit module fails (i.e., the power unit of the first outdoor unit module fails) will be described as follows:
fig. 10 is a schematic diagram illustrating an eighth multi-module multi-connected unit heating mode according to an embodiment of the present invention, as shown in fig. 10, in case of a failure, the compressor 11 of the first outdoor unit module is turned off, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is opened, the fan 22 is opened, and the communication valve EXV1 is opened; and a compressor 11 of the second outdoor unit module is started, the four-way valve 12 is electrified, the heat exchange expansion valve EXV2 is started, the fan 22 is started, and the communication valve EXV1 is started.
In the second outdoor unit module to the nth outdoor unit module, the refrigerants are discharged from respective compressors 11, enter the indoor units through respective four-way valves 12 and respective first valves EV1, respectively enter heat exchange portions of the first outdoor unit module to the nth outdoor unit module after heat exchange in the indoor units is completed, are gathered together with the refrigerants after heat exchange in the second outdoor unit module to the nth outdoor unit module through the communication pipeline 3 after heat exchange of the refrigerants of the first outdoor unit module is completed, and return to the compressors 11 of the second outdoor unit module to the nth outdoor unit module through the four-way valves 12 and the gas-liquid separators 13 of the second outdoor unit module to the nth outdoor unit module together, so that a heating cycle is completed.
With reference to fig. 11, a heat exchange process of the multi-module multi-unit set including two outdoor unit modules, namely, a first outdoor unit module and a second outdoor unit module, when the multi-module multi-unit set operates in a cooling mode, a fan 22 of the first outdoor unit module fails (i.e., a heat exchange portion of the first outdoor unit module fails), and a compressor 11 of the second outdoor unit module fails (i.e., a power portion of the second outdoor unit module fails) will be described as follows:
fig. 11 is a schematic diagram of a ninth multi-module multi-connected unit in a refrigeration mode according to an embodiment of the present invention, as shown in fig. 11, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is turned on by a preset number of steps, where the preset number of steps is smaller than the number of steps of turning on the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the communication valve EXV1 is turned on when the fan 22 is turned off due to a fault, the compressor 11 of the second outdoor unit module is turned off, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is turned on, the fan 22 is turned on, and the communication valve EXV1 is turned on.
The refrigerant is discharged from the compressor 11 of the first outdoor unit module, enters the condenser 21 of the second outdoor unit module for heat exchange through the four-way valve 12 of the first outdoor unit module, the communicating valve EXV1 and the communicating valve EXV1 of the second outdoor unit module, enters the indoor unit through the subcooler 23 of the second outdoor unit module and the second valve EV2, returns to the gas-liquid separator 13 of the first outdoor unit module through the first valve EV1 of the first outdoor unit module after heat exchange in the indoor unit is completed, and finally returns to the compressor 11 of the first outdoor unit module, so that the refrigeration cycle is completed.
With reference to fig. 12, a heat exchange process of the multi-module multi-connected unit including N outdoor unit modules will be described, where the multi-module multi-connected unit operates in a cooling mode, and when the fan 22 of the first outdoor unit module fails (i.e., the heat exchange unit of the first outdoor unit module fails), and the compressors 11 of the second outdoor unit module to the nth outdoor unit module fail (i.e., the power units of the second outdoor unit module to the nth outdoor unit module fail):
fig. 12 is a schematic diagram of a tenth multi-module multi-connected unit in a refrigeration mode according to an embodiment of the present invention, as shown in fig. 12, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is turned on for a preset number of steps, where the preset number of steps is smaller than the number of steps for turning on the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the communication valve EXV1 is turned on when the fan 22 is turned off due to a fault, the compressor 11 of the second outdoor unit module to the nth outdoor unit module is turned off, the four-way valve 12 is turned off, the heat exchange expansion valve EXV2 is turned on, the fan 22 is turned on, and the communication valve EXV1 is turned on.
The refrigerant is discharged from the compressor 11 of the first outdoor unit module, enters the condenser 21 from the second outdoor unit module to the nth outdoor unit module through the four-way valve 12 of the first outdoor unit module, the communicating valve EXV1 and the communicating valve EXV1 from the second outdoor unit module to the nth outdoor unit module for heat exchange, enters the indoor unit through the subcooler 23 from the second outdoor unit module to the nth outdoor unit module and the second valve EV2, returns to the gas-liquid separator 13 of the first outdoor unit module through the first valve EV1 of the first outdoor unit module after the heat exchange in the indoor unit is completed, and finally returns to the compressor 11 of the first outdoor unit module to complete the refrigeration cycle.
With reference to fig. 13, a heat exchange process of the multi-module multi-unit set including two outdoor unit modules, namely, a first outdoor unit module and a second outdoor unit module, when the multi-module multi-unit set operates in a heating mode, a fan 22 of the first outdoor unit module fails (i.e., a heat exchange portion of the first outdoor unit module fails), and a compressor 11 of the second outdoor unit module fails (i.e., a power portion of the second outdoor unit module fails) will be described as follows:
fig. 13 is a schematic diagram of an eleventh multi-module multi-connected unit in a heating mode according to an embodiment of the present invention, as shown in fig. 13, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is powered on, the heat exchange expansion valve EXV2 is turned on for a preset number of steps, where the preset number of steps is smaller than the number of steps for turning on the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the fan 22 is turned off, the communication valve EXV1 is turned on, the compressor 11 of the second outdoor unit module is turned off, the four-way valve 12 is powered off, the heat exchange expansion valve EXV2 is turned on, the fan 22 is turned on, and the communication valve EXV1 is turned on.
The refrigerant is discharged from the compressor 11 of the first outdoor unit module, enters the indoor unit through the four-way valve 12 of the first outdoor unit module, enters the condenser 21 of the second outdoor unit module through the second valve EV2, the subcooler 23 and the heat exchange expansion valve EXV2 after heat exchange in the indoor unit is completed, then returns to the gas-liquid separator 13 of the first outdoor unit module through the communicating valve EXV1 of the second outdoor unit module and the first outdoor unit module, and finally returns to the compressor 11 of the first outdoor unit module, thereby completing the heating cycle.
With reference to fig. 14, a heat exchange process of the multi-module multi-connected unit including N outdoor unit modules when the multi-module multi-connected unit operates in a heating mode, the fan 22 of the first outdoor unit module fails (i.e., the heat exchange unit of the first outdoor unit module fails), and the compressor 11 of the second outdoor unit module to the nth outdoor unit module fails (i.e., the power unit of the second outdoor unit module to the nth outdoor unit module fails) will be described as follows:
fig. 14 is a schematic diagram of a twelfth multi-module multi-connected unit in a heating mode according to an embodiment of the present invention, as shown in fig. 14, the compressor 11 of the first outdoor unit module is turned on, the four-way valve 12 is powered on, the heat exchange expansion valve EXV2 is turned on for a preset number of steps, where the preset number of steps is smaller than the number of steps for turning on the heat exchange expansion valve EXV2 when the outdoor unit module is in a normal state, the fan 22 is turned off, the communication valve EXV1 is turned on, the compressors 11 of the second outdoor unit module to the nth outdoor unit module are turned off, the four-way valve 12 is powered off, the heat exchange expansion valve EXV2 is turned on, the fan 22 is turned on, and the communication valve EXV1 is turned on.
The refrigerant is discharged from the compressor 11 of the first outdoor unit module, enters the indoor unit through the four-way valve 12 of the first outdoor unit module, enters the condenser 21 of the second outdoor unit module to the nth outdoor unit module through the second valve EV2, the subcooler 23 and the heat exchange expansion valve EXV2 after the heat exchange in the indoor unit is completed, then returns to the gas-liquid separator 13 of the first outdoor unit module through the communication valve EXV1 of the second outdoor unit module to the nth outdoor unit module and the first outdoor unit module, and finally returns to the compressor 11 of the first outdoor unit module, thereby completing the heating cycle.
Example 4
The present embodiment provides a control method, which is applied to a multi-module multi-connected unit in the foregoing embodiments, and fig. 15 is a flowchart of the control method according to the embodiment of the present invention, as shown in fig. 15, where the method includes:
s101, determining the fault type after the outdoor unit module in the multi-module multi-connected unit fails.
And if the fault is a compressor fault, determining that the power part is in fault, and if the fault is a fan or condenser fault, determining that the heat exchanging part is in fault.
And S102, if the power part of the outdoor unit module has a fault, controlling the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit to share the power part which normally operates.
S103, if the heat exchange part of the outdoor unit module fails, controlling the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit to share the heat exchange part which normally operates.
The pipeline between the power part and the heat exchange part is communicated with the first port of the communication pipeline, and the second port of the communication pipeline is communicated with the communication pipelines of other outdoor unit modules.
In the control method of the embodiment, when the power part of the outdoor unit module fails, the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit are controlled to share the power part which normally operates; and when the heat exchange part of the outdoor unit module fails, controlling the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit to share the heat exchange part which normally operates. The components which do not break down in the outdoor unit module can be fully utilized, and the heat exchange effect of the whole unit is improved.
In specific implementation, if the power part of the outdoor unit module breaks down, the heat exchange part of the outdoor unit module is controlled to normally operate, meanwhile, the power part of the outdoor unit module is controlled to stop operating, and the power parts which normally operate in the other outdoor unit modules in the multi-module multi-connected unit are controlled to provide power for the broken outdoor unit module through the communicating pipeline; if the heat exchange part of the outdoor unit module fails, the power part of the outdoor unit module is controlled to normally operate, the heat exchange part of the outdoor unit module is controlled to stop operating, and the normally operating heat exchange parts in the other outdoor unit modules in the multi-module multi-connected unit are controlled to exchange heat for the failed outdoor unit module through the communication pipeline.
Example 6
The present embodiment provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the control method in the above-described embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (14)

1. An outdoor unit module is characterized by comprising a power part and a heat exchange part, wherein the power part is communicated with a first port of an indoor unit through a first pipeline, the heat exchange part is communicated with a second port of the indoor unit through a second pipeline, and the power part is communicated with the heat exchange part through a pipeline;
the outdoor unit module further includes: and the first port of the communication pipeline is communicated with the pipeline between the power part and the heat exchange part, and the second port of the communication pipeline is communicated with the communication pipelines of other outdoor unit modules and is used for sharing the power part or the heat exchange part with other outdoor unit modules through the communication pipeline when the power part or the heat exchange part of the outdoor unit module breaks down.
2. An outdoor unit module of claim 1, wherein a communication valve is disposed on the communication pipe.
3. An outdoor unit module of claim 1, wherein the power part comprises:
the outlet end of the compressor is communicated with a first interface of the four-way valve; and a second interface of the four-way valve is communicated with a first port of the indoor unit through a first pipeline, a third interface is communicated with a gas suction end of the compressor, and a fourth interface is communicated with the heat exchanging part.
4. An outdoor unit module of claim 3, wherein the power part further comprises:
and the gas-liquid separator is arranged between the third interface of the four-way valve and the air suction end of the compressor.
5. An outdoor unit module of claim 3, wherein the power part further comprises:
and the oil separator is arranged between the exhaust end of the compressor and the first interface of the four-way valve.
6. An outdoor unit module of claim 3, wherein the power part further comprises:
and the one-way valve is arranged between the exhaust end of the compressor and the first interface of the four-way valve.
7. An outdoor unit module of claim 3, wherein the heat exchanging part comprises:
the first port of the condenser is communicated with the fourth port of the four-way valve, the second port of the condenser is communicated with the second port of the indoor unit through a second pipeline, and the fan is arranged adjacent to the condenser.
8. An outdoor unit module of claim 7, wherein the heat exchanging part further comprises:
and the heat exchange expansion valve is arranged on the second pipeline.
9. An outdoor unit module of claim 7, wherein the heat exchanging part further comprises:
and the subcooler is arranged on the second pipeline.
10. A multi-modular multi-connected unit comprising at least two outdoor unit modules as claimed in any one of claims 1 to 9,
the communication pipelines of different outdoor unit modules are communicated with each other;
the first pipeline of each outdoor unit module is communicated to a first main pipeline which is communicated with a first port of the indoor unit;
and the second pipeline of each outdoor unit module is communicated to a second main pipeline which is communicated with a second port of the indoor unit.
11. A control method applied to the multi-module multi-connected unit as claimed in claim 10, wherein the method comprises:
determining the fault type after the outdoor unit module in the multi-module multi-connected unit fails;
if the power part of the outdoor unit module has a fault, controlling the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit to share the power part which normally operates;
if the heat exchange part of the outdoor unit module fails, controlling the outdoor unit module and other outdoor unit modules in the multi-module multi-connected unit to share the heat exchange part which normally operates;
the pipeline between the power part and the heat exchanging part is communicated with a first port of a communicating pipeline, and a second port of the communicating pipeline is communicated with communicating pipelines of other outdoor unit modules.
12. The method of claim 11, wherein if the outdoor unit module power unit fails, controlling the outdoor unit module to share a power unit which normally operates with the remaining outdoor unit modules in the multi-module multi-split air conditioner comprises:
and if the power part of the outdoor unit module has a fault, controlling the heat exchange part of the outdoor unit module to normally operate, simultaneously controlling the power part of the outdoor unit module to stop operating, and controlling the power parts which normally operate in the other outdoor unit modules in the multi-module multi-connected unit to provide power for the outdoor unit module with the fault through the communication pipeline.
13. The method of claim 11, wherein if the heat exchange unit of the outdoor unit module fails, controlling the outdoor unit module to share the heat exchange unit which normally operates with the rest of the outdoor unit modules in the multi-module multi-split unit comprises:
and if the heat exchange part of the outdoor unit module fails, controlling the power part of the outdoor unit module to normally operate, simultaneously controlling the heat exchange part of the outdoor unit module to stop operating, and controlling the normally operating heat exchange parts in the other outdoor unit modules in the multi-module multi-connected unit to exchange heat for the failed outdoor unit module through the communication pipeline.
14. A computer-readable storage medium on which a computer program is stored, the program, when being executed by a processor, implementing the control method according to any one of claims 11 to 13.
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