WO2019232943A1 - 多联机空调及其的控制方法 - Google Patents

多联机空调及其的控制方法 Download PDF

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Publication number
WO2019232943A1
WO2019232943A1 PCT/CN2018/102922 CN2018102922W WO2019232943A1 WO 2019232943 A1 WO2019232943 A1 WO 2019232943A1 CN 2018102922 W CN2018102922 W CN 2018102922W WO 2019232943 A1 WO2019232943 A1 WO 2019232943A1
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WIPO (PCT)
Prior art keywords
pipeline
control valve
storage module
outdoor
air conditioner
Prior art date
Application number
PCT/CN2018/102922
Other languages
English (en)
French (fr)
Inventor
孟庆良
宋强
谭雪艳
王冰
刘江彬
李银银
张韵
刘景升
李守俊
李文波
Original Assignee
青岛海尔空调电子有限公司
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Filing date
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Application filed by 青岛海尔空调电子有限公司 filed Critical 青岛海尔空调电子有限公司
Publication of WO2019232943A1 publication Critical patent/WO2019232943A1/zh
Priority to US17/112,735 priority Critical patent/US11480344B2/en

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Classifications

    • 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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • 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
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice

Definitions

  • the invention relates to the technical field of air conditioners, in particular to a multi-line air conditioner and a control method thereof.
  • Multi-line air conditioners generally include cooling and heating type heat pump type air conditioners, or hot water heaters for hot water, or air conditioner hot water heaters that have functions of cooling, heating, hot water, and simultaneous cooling and heating.
  • Energy-saving air conditioners with cold storage functions provide these systems with a certain degree of constant temperature, humidity, and hot water in daily life.
  • the multi-connected air conditioner in the prior art cannot be adjusted according to changes in the external temperature.
  • the load of the multi-connected air conditioner significantly increases, which seriously affects its service life and performance.
  • Embodiments of the present invention provide a multi-connected air conditioner and a control method thereof to solve the problem that the load of the multi-connected air conditioner is significantly increased when the outdoor ambient temperature is high or low in the prior art.
  • a brief summary is given below. This summary is not a general overview, nor is it intended to identify key / important constituent elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
  • a multi-line air conditioner includes an outdoor unit, wherein the outdoor unit includes: an oil separator and a four-way valve, and the outdoor unit further includes:
  • the pipeline includes a first pipeline and a second pipeline arranged in parallel, wherein the first pipeline is provided with a heat storage module and a heat storage module control valve, and the second pipeline is provided with a first control valve ;
  • the multi-line air conditioner further includes: a hot water system, the hot water system is connected to the heat storage module through a third pipeline and a fourth pipeline;
  • a second control valve is provided on the third pipeline, and a third control valve is provided on the fourth pipeline.
  • the hot water system includes: a solar collector and a water tank connected to the solar collector;
  • the first port of the solar heat collector is connected to the first port of the water tank through a fifth pipe, and the fifth pipe is provided with a fourth control valve, a first three-way valve, and a sixth control valve in this order.
  • the fourth pipeline is connected to the fifth pipeline through the first tee;
  • the second port of the solar heat collector is connected to the second port of the water tank through a sixth pipeline, and a fifth control valve, a second three-way valve, and a seventh control valve are sequentially arranged on the sixth pipeline.
  • the third pipeline is connected to the sixth pipeline through the second tee.
  • the outdoor unit further includes: a gas-liquid separator
  • One end of the gas-liquid separator is connected to a compressor, and the other end is connected to the four-way valve through a seventh pipeline, and an eighth control valve is provided on the seventh pipeline.
  • the outdoor unit further includes: an outdoor heat exchanger, and two ends of the outdoor heat exchanger are respectively connected to the four-way valve and the indoor heat exchanger.
  • a ninth control valve is provided on a pipeline connecting the outdoor heat exchanger and the four-way valve.
  • a pipeline between the outlet of the outdoor heat exchanger and the inlet of the indoor heat exchanger is provided with a tenth control valve, an eleventh control valve connected in parallel, and outdoor electronics. Expansion valve.
  • the outdoor environment temperature meets a certain condition includes that the outdoor environment temperature is greater than or equal to a first set value and the outdoor environment temperature is less than a fourth set value.
  • a method for controlling a multi-connected air conditioner is provided.
  • the multi-connected air conditioner is the multi-connected air conditioner described above, and the method includes:
  • the first pipeline and the second pipeline When the outdoor ambient temperature meets certain conditions, by controlling the first pipeline and the second pipeline, at least part of the working fluid passes through the first pipe of the thermal storage module between the oil separator and the four-way valve. Circulating inside the road, wherein the heat storage module absorbs heat from the working medium.
  • the method further includes:
  • the second control valve, the third control valve, the fourth control valve, and the fifth control valve are closed, and the sixth control valve and the seventh control valve are disconnected, so that the heat storage module heats the water in the water tank by the absorbed heat.
  • An embodiment of the present invention provides a multi-line air conditioner including an outdoor unit, wherein the outdoor unit includes: an oil separator and a four-way valve, and the outdoor unit further includes: connecting the oil separator and the four-way valve
  • the pipeline includes a first pipeline and a second pipeline arranged in parallel, wherein the first pipeline is provided with a heat storage module and a heat storage module control valve, and the second pipeline is provided with A first control valve; when the outdoor ambient temperature meets a certain condition, closing the first pipeline and the second pipeline, so that at least part of the working fluid passes through the heat storage module in the oil separator and the four The first pipeline between the on-off valves circulates.
  • the first pipeline and the second pipeline are provided in parallel between the oil separator and the four-way valve, and a heat storage module and a heat storage are provided on the first pipeline.
  • Modular control valve The first control valve is provided on the second pipeline.
  • the first pipeline and the second pipeline are controlled so that at least part of the working fluid passes through the pipeline.
  • a heat storage module circulates between the oil separator and the four-way valve. When the working fluid passes through the heat storage module, heat transfer is performed between the heat storage module and the working fluid, which reduces The load of the on-line air conditioner prevents the load of the multi-line air conditioner from being too large and reducing performance.
  • Fig. 1 is a schematic structural diagram of a multi-connected air conditioner according to an exemplary embodiment
  • Fig. 2 is a flow chart showing a method for controlling a multi-connected air conditioner according to an exemplary embodiment
  • Fig. 3 is a flowchart of a method for controlling a multi-connected air conditioner according to another exemplary embodiment
  • Fig. 4 is a flow chart of a method for controlling a hot water system of a multi-connected air conditioner according to an exemplary embodiment
  • FIG. 1 is a schematic structural diagram of a multi-connected air conditioner according to an exemplary embodiment, as shown in FIG.
  • the outdoor unit includes: an oil separator 1 and a four-way valve 4, and a pipeline connecting the oil separator 1 and the four-way valve 4;
  • the pipeline includes a first pipeline 26 and a second pipeline 27 arranged in parallel, wherein the first pipeline 26 is provided with a heat storage module 3 and a heat storage module control valve 33, and the second pipeline 27 is provided with a first control valve 2;
  • the first pipeline 26 and the second pipeline 27 are provided in parallel between the oil separator 1 and the four-way valve 4, and the first pipeline 26 is provided with The heat storage module 3 and the heat storage module control valve 33.
  • the second pipe 27 is provided with a first control valve 2.
  • the heat storage module control valve 33 and The first control valve 2 allows at least part of the working fluid to flow through the heat storage module 3 in the first pipeline 26 between the oil separator 1 and the four-way valve 4.
  • the heat transfer between the heat storage module 3 and the working medium reduces the heat radiation load of the outdoor radiator 17 of the multi-line air conditioner, and avoids the excessive load of the outdoor radiator 17 While degrading performance.
  • the four-way valve 4 has an a port, a b port, a c port, and a d port, wherein the oil separator 1 is connected to the a port of the four-way valve 4.
  • the first set value may be a range value, such as greater than 20 ° C and less than or equal to 30 ° C.
  • the first set value may be a specific value, such as 25 ° C.
  • the heat storage module 3 absorbs at least part of the heat of the working medium to reduce the heat radiation load of the outdoor radiator 17.
  • the heat storage module 3 transfers heat to the working medium, thereby reducing the load of the multi-line air conditioner.
  • the first control valve 2 When the summer temperature is very high, that is, when the outdoor ambient temperature is greater than or equal to the second set value, where the second set value is greater than the first set value, the first control valve 2 is disconnected and the second Line 27, which closes the heat storage module control valve 33 so that all the working fluid passes through the heat storage module 3 in the first line 26 between the oil separator 1 and the four-way valve 4 Circulation, when the working medium passes through the heat storage module 3, the heat storage module 3 absorbs the heat of the working medium, reduces the heat radiation load of the outdoor radiator 17 of the multi-line air conditioner, and avoids the load of the outdoor radiator 17 Too large and degraded performance.
  • the heat storage module control valve 33 and the first control valve 2 are closed, so that at least part of the working fluid passes through the heat storage module 3 in the oil separator 1 and The first pipeline 26 between the four-way valve 4 circulates.
  • the heat storage module 3 absorbs the heat of the working medium and reduces the outdoor temperature of the multi-line air conditioner.
  • the heat dissipation load of the radiator 17 prevents the load of the outdoor radiator 17 from being excessively large and degrading performance.
  • the second set value may be a range value, such as greater than 30 ° C and less than or equal to 45 ° C.
  • the second set value may be a specific value, such as 40 ° C.
  • the multi-line air conditioner further includes: a hot water system connected to the heat storage module 3 through a third pipeline 28 and a fourth pipeline 29;
  • the third pipeline 28 is provided with a second control valve 5, and the fourth pipeline 29 is provided with a third control valve 6.
  • Adding a hot water system to the multi-line air conditioner can combine the hot water system and the air conditioning system to make full use of energy and avoid waste of resources.
  • the hot water system includes: a solar heat collector 11 and a water tank 12 connected to the solar heat collector 11;
  • the first port of the solar heat collector 11 and the first port of the water tank 12 are connected through a fifth pipe 30.
  • the fifth pipe 30 is provided with a fourth control valve 7 and a first three-way 24 in this order.
  • a sixth control valve 9 the fourth pipeline 29 is connected to the fifth pipeline 30 through the first three-way 24;
  • the second port of the solar heat collector 11 and the second port of the water tank 12 are connected through a sixth pipe 31.
  • the sixth pipe 31 is provided with a fifth control valve 8 and a second three-way 25 in this order.
  • the seventh control valve 10 the third pipeline 28 is connected to the sixth pipeline 31 through the second three-way 25.
  • the heat storage module 3 is connected to the hot water system, and the air conditioning system and the hot water system are combined to make full use of the energy in the natural environment .
  • the fourth control valve 7, the fifth control valve 8, and the second control valve are closed. 5.
  • the third control valve 6, the sixth control valve 9, and the seventh control valve 10 so that the heat storage module 3 absorbs the heat in the solar heat collector 11; in winter evening, when When the outdoor ambient temperature is less than the fourth set value, the heat storage module control valve 33 and the first control valve 2 are closed, so that the first pipeline and the second pipeline are closed, so that at least part of the working fluid
  • the heat storage module 3 circulates in the first pipeline 26 between the oil separator 1 and the four-way valve 4.
  • the heat storage module 3 transfers heat to the working medium, reducing
  • the load of the compressor 14 is realized by absorbing heat from the solar heat collector 11 through the heat storage module during the day, and adding heat to the air-conditioning system when the temperature at night is low, reducing the load on the compressor 14 due to changes in ambient temperature. Effect, make full use of the heat from the solar collector 11 and save energy And prolong the service life of the compressor 14.
  • the outdoor unit further includes: a gas-liquid separator 13;
  • One end of the gas-liquid separator 13 is connected to the compressor 14, and the other end is connected to the c port of the four-way valve 4 through a seventh pipe 32, and the seventh pipe 32 is provided with an eighth control valve 16.
  • the eighth control valve 16 is used to control the on-off of the seventh pipeline 32.
  • two ends of the outdoor heat exchanger 17 are respectively connected to the b port of the four-way valve 4 and the indoor heat exchanger 23.
  • a ninth control valve 19 is provided on a pipeline connected between the outdoor heat exchanger 17 and the b port of the four-way valve 4, and the on-off of the pipeline can be controlled by the ninth control valve 19.
  • a pipeline between the outlet of the outdoor heat exchanger 17 and the inlet of the indoor heat exchanger 23 is provided with a tenth control valve 20 in sequence, and an eleventh control in parallel
  • the number of the indoor heat exchangers 23 is one or more, and each of the indoor heat exchangers 23 is provided with an indoor electronic expansion valve 22, and two indoor heat exchangers are provided in FIG. 1.
  • the heat exchanger 23 realizes that one outdoor heat exchanger 17 corresponds to a plurality of the indoor heat exchangers 23.
  • the refrigerant gas discharged from the compressor 14 passes through the check valve 15, the oil separator 1, the heat storage module 3, and the heat storage module control valve 33 or the first control valve 2 Connected by the a port and the b port of the four-way valve 4, and then through the ninth control valve 19, the outdoor heat exchanger 17, and then the eleventh control valve 21 or the outdoor electronic expansion
  • the valve 18, the tenth control valve 20, the indoor electronic expansion valve 22, and the indoor heat exchanger 23 are connected by the d port and the c port of the four-way valve 4 through the eighth control valve. 16.
  • the gas-liquid separator 13 is connected to the suction end of the compressor 14 to complete a refrigeration cycle.
  • the refrigerant gas discharged from the compressor 14 passes through the check valve 15, the oil separator 1, the heat storage module 3, and the heat storage module control valve 33 or the first control valve. 2.
  • the indoor electronic expansion valve 22 Connected by the a port and the d port of the four-way valve 4, and then through the indoor heat exchanger 23, the indoor electronic expansion valve 22, the tenth control valve 20, the eleventh control valve 21, or
  • the outdoor electronic expansion valve 18, the outdoor heat exchanger 17, and the ninth control valve 19 are connected by the b port and the c port of the four-way valve 4, and flow through the eighth control valve 16,
  • the gas-liquid separator 13 is connected to the suction end of the compressor 14 to complete a heating cycle.
  • the heat storage module 3 when the summer temperature is higher than a first preset value, the heat storage module 3 can be used to absorb the heat of at least part of the working medium in the system for heating
  • the water in the water tank 12 shares the heat dissipation load of the outdoor radiator 17; in winter, when the outdoor ambient temperature is less than a fourth set value, the solar heat collector 11 is absorbed by the heat storage module 3
  • the heat is added to the air-conditioning system.
  • the further function of the heat storage module 3 is reflected in summer and winter. No matter how the outdoor temperature changes, by controlling the heat storage module 3, the frequency of the compressor 14 can be achieved. Within a relatively stable range, the overall performance of the entire multi-line air conditioner can be guaranteed;
  • adding the heat storage module 3 to the system can reduce the impact of outdoor operating condition fluctuations on the compressor 14, improve system reliability, and extend the service life of the compressor 14.
  • the heat storage module 3 can improve the multi-line cycle performance coefficient (COP) under certain conditions.
  • COP multi-line cycle performance coefficient
  • the outdoor temperature in summer exceeds the rated operating temperature of the multi-line air conditioner.
  • the heat storage module 3 is added, so that the compressor 14 can still be operated near the rated working condition, so that the power consumption of the whole machine is smaller than that without increasing the heat storage module 3, and the cooling capacity is Under the same condition, the efficiency of the whole machine will be improved compared with the time when the heat storage module 3 is not added.
  • the outdoor working conditions in winter are lower than the rated working conditions, the efficiency of the whole machine will also be higher than that without increasing.
  • the heat storage module 3 is higher, so the addition of the heat storage module 3 will significantly improve the efficiency of the multi-line air conditioner.
  • a multi-line air conditioner control method is provided.
  • the multi-line air conditioner is the multi-line air conditioner described above. As shown in FIG. 2, the method includes:
  • the first set value may be a range value, such as greater than 20 ° C and less than or equal to 30 ° C.
  • the first set value may be a specific value, such as 25 ° C.
  • S301 and S302 are as follows:
  • the outdoor environment temperature meets a certain condition includes that the outdoor environment temperature is greater than or equal to the first set value and the outdoor environment temperature is less than the fourth set value.
  • the method further includes:
  • the heat in the heat storage module 3 can be used to heat the water in the water tank 12 to achieve full utilization of energy.
  • FIG. 4 is a flowchart of a method for controlling a hot water system of a multi-line air conditioner according to an exemplary embodiment. As shown in FIG. 4, the method includes:
  • This method is suitable for winter.
  • the fourth control valve 7, the fifth control valve 8, and the second A control valve 5, the third control valve 6, the sixth control valve 9, and the seventh control valve 10 so that the heat storage module 3 absorbs the heat in the solar heat collector 11;
  • the heat storage module 3 When the temperature at night is low, that is, when the outdoor ambient temperature is lower than the fourth set value, at least part of the working fluid can be passed through the heat storage module control valve 33 and the first control valve 2
  • the heat storage module 3 circulates in the first pipeline 26 between the oil separator 1 and the four-way valve 4. The heat storage module 3 transfers heat to the working fluid and reduces the compressor. 14 loads.
  • the first set value may be a range value, such as greater than 20 ° C and less than or equal to 30 ° C.
  • the first set value may be a specific value, such as 25 ° C.
  • the second set value may be a range value, such as greater than 30 ° C and less than or equal to 45 ° C.
  • the second set value may be a specific value, such as 40 ° C.
  • the third set value may be a range value, such as greater than 35 ° C and less than or equal to 60 ° C.
  • the third set value may be a specific value, such as 40 ° C.
  • the fourth set value may be a range value, such as greater than -20 ° C and less than or equal to 3 ° C.
  • the fourth set value may be a specific value, such as 0 ° C.
  • the heat storage module 3 when the summer temperature is higher than a first preset value, the heat storage module 3 can be used to absorb the heat of at least part of the working medium in the system for heating
  • the water in the water tank 12 shares the heat dissipation load of the outdoor radiator 17; in winter, when the outdoor ambient temperature is less than a fourth set value, the solar heat collector 11 is absorbed by the heat storage module 3
  • the heat is added to the air-conditioning system.
  • the further function of the heat storage module 3 is reflected in summer and winter. No matter how the outdoor temperature changes, by controlling the heat storage module 3, the frequency of the compressor 14 can be achieved. Within a relatively stable range, the overall performance of the entire multi-line air conditioner can be guaranteed;
  • adding the heat storage module 3 to the system can reduce the impact of outdoor operating condition fluctuations on the compressor 14, improve system reliability, and extend the service life of the compressor 14.
  • the heat storage module 3 can improve the multi-line cycle performance coefficient (COP) under certain conditions. For example, when the outdoor temperature in summer exceeds the multi-line air-conditioning rated working temperature temperature more Because the heat storage module 3 is added, the compressor 14 can still be operated near the rated working condition, so that the power consumption of the entire machine is smaller than that without increasing the heat storage module 3, and the cooling capacity is unchanged. In the case, the efficiency of the whole machine will be improved compared with the time when the heat storage module 3 is not increased. When the outdoor working conditions in winter are lower than the rated operating conditions, the efficiency of the whole machine will also be higher than that without increasing the storage. The thermal module 3 must be high, so adding the thermal storage module 3 will significantly improve the efficiency of the multi-line air conditioner.
  • COP multi-line cycle performance coefficient
  • control valves involved herein may be solenoid valves, such as the first control valve 2, the second control valve 5, the third control valve 6, and the like.

Abstract

一种多联机空调，包括室外机，其中室外机包括：油分离器（1）和四通阀（4），室外机还包括：连接油分离器（1）和四通阀（4）的管路；管路包括并联设置的第一管路（26）和第二管路（27），其中，第一管路（26）上设有蓄热模块（3）和蓄热模块控制阀（33），第二管路（27）上设有第一控制阀（2）；当室外环境温度满足一定条件时，通过控制第一管路（26）和第二管路（27），使得至少部分工质经蓄热模块（3）在油分离器（1）和四通阀（4）之间的第一管路（26）内流通。

Description

多联机空调及其的控制方法
本申请基于申请号为201810587508.4、申请日为2018年6月6日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及空调技术领域，特别涉及一种多联机空调及其的控制方法。
背景技术
多联机空调一般有制冷、制热型的热泵型空调，或制热水的热水机，或兼有制冷、制热、制热水及同时制冷制热水等功能的空调热水机或具有蓄冷功能的节能型空调，这些系统一定程度上提供了人们日常生活中恒定的环境温、湿度以及热水等生活用水的需求。
现有技术中的多联机空调无法根据外界温度的变化做出调整，在室外环境温度较高或者较低时，多联机空调的负荷明显增大，严重影响其使用寿命及性能。
发明内容
本发明实施例提供了一种多联机空调及其的控制方法，以解决现有技术中室外环境温度较高或者较低时，多联机空调的负荷明显增大的问题。为了对披露的实施例的一些方面有一个基本的理解，下面给出了简单的概括。该概括部分不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围。其唯一目的是用简单的形式呈现一些概念，以此作为后面的详细说明的序言。
根据本发明实施例的第一方面，提供了一种多联机空调，所述多联机空调，包括室外机，其中所述室外机包括：油分离器和四通阀，所述室外机还包括：
连接所述油分离器和所述四通阀的管路；
所述管路包括并联设置的第一管路和第二管路，其中，所述第一管路上设有蓄热模块和蓄热模块控制阀，所述第二管路上设有第一控制阀；
当室外环境温度满足一定条件时，通过控制所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块在所述油分离器和所述四通阀之间的所述第一管路内流通。
在一些可选实施例中，所述多联机空调还包括：热水系统，所述热水系统通过第三管路和第四管路与所述蓄热模块连接；
其中，所述第三管路上设有第二控制阀，所述第四管路上设有第三控制阀。
在一些可选实施例中，所述热水系统包括：太阳能集热器以及与所述太阳能集热器连接的水箱；
所述太阳能集热器的第一端口与所述水箱的第一端口通过第五管路连接，所述第五管路上依次设有第四控制阀、第一三通和第六控制阀，所述第四管路通过所述第一三通与所述第五管路连接；
所述太阳能集热器的第二端口与所述水箱的第二端口通过第六管路连接，所述第六管路上依次设有第五控制阀、第二三通和第七控制阀，所述第三管路通过所述第二三通与所述第六管路连接。
在一些可选实施例中，所述室外机还包括：气液分离器；
所述气液分离器的一端与压缩机连接，另一端与所述四通阀通过第七管路连接，所述第七管路上设有第八控制阀。
在一些可选实施例中，所述室外机还包括：室外换热器，所述室外换热器的两端分别与所述四通阀和室内换热器连接。
在一些可选实施例中，在所述室外换热器与所述四通阀连接的管路上，设有第九控制阀。
在一些可选实施例中，在所述室外换热器的出口和所述室内换热器的入口之间的管路上，依次设有第十控制阀，并联的第十一控制阀和室外电子膨胀阀。
在一些可选实施例中，室外环境温度满足一定条件包括室外环境温度大于等于第一设定值和室外环境温度小于第四设定值。
根据本发明实施例的第二方面，提供了一种多联机空调的控制方法， 所述多联机空调为上面所述的多联机空调，所述的方法包括：
获取室外环境温度；
当室外环境温度满足一定条件时，通过控制所述第一管路和所述第二管路，使得至少部分工质经蓄热模块在油分离器和四通阀之间的所述第一管路内流通，其中，所述蓄热模块从所述工质中吸收热量。
在一些可选实施例中，所述蓄热模块从所述工质中吸收热量之后，所述的方法还包括：
闭合第二控制阀、第三控制阀、第四控制阀、第五控制阀，断开第六控制阀和第七控制阀，使得所述蓄热模块通过吸收的热量加热水箱中的水。
本发明实施例提供的技术方案可以包括以下有益效果：
本发明实施例提供了一种多联机空调，包括室外机，其中所述室外机包括：油分离器和四通阀，所述室外机还包括：连接所述油分离器和所述四通阀的管路；所述管路包括并联设置的第一管路和第二管路，其中，所述第一管路上设有蓄热模块和蓄热模块控制阀，所述第二管路上设有第一控制阀；当室外环境温度满足一定条件时，闭合所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块在所述油分离器和所述四通阀之间的第一管路内流通。
本发明实施例通过在所述油分离器和所述四通阀之间设置并联的所述第一管路和所述第二管路，所述第一管路上设有蓄热模块和蓄热模块控制阀，所述第二管路上设有第一控制阀，当室外环境温度满足一定条件时，通过控制所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块在所述油分离器和所述四通阀之间流通，当所述工质经过所述蓄热模块时，所述蓄热模块与所述工质之间进行热量传递，降低多联机空调的负荷，避免所述多联机空调的负荷过大而降低性能。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本发明。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是根据一示例性实施例示出的一种多联机空调的结构示意图；
图2是根据一示例性实施例示出的一种多联机空调的控制方法流程图；
图3是根据另一示例性实施例示出的一种多联机空调的控制方法流程图；
图4是根据一示例性实施例示出的一种多联机空调的热水系统的控制方法流程图；
附图说明：1、油分离器；2、第一控制阀；3、蓄热模块；4、四通阀；5、第二控制阀；6、第三控制阀；7、第四控制阀；8、第五控制阀；9、第六控制阀；10、第七控制阀；11、太阳能集热器；12、水箱；13、气液分离器；14、压缩机；15、单向阀；16、第八控制阀；17、室外换热器；18、室外电子膨胀阀；19、第九控制阀；20、第十控制阀；21、第十一控制阀；22、室内电子膨胀阀；23、室内换热器；24、第一三通；25、第二三通；26、第一管路；27、第二管路；28、第三管路；29、第四管路；30、第五管路；31、第六管路；32、第七管路；33、蓄热模块控制阀。
具体实施方式
以下描述和附图充分地示出本发明的具体实施方案，以使本领域的技术人员能够实践它们。一些实施方案的部分和特征可以被包括在或替换其他实施方案的部分和特征。本发明的实施方案的范围包括权利要求书的整个范围，以及权利要求书的所有可获得的等同物。本文中，诸如第一和第二等之类的关系术语仅仅用于将一个实体或者结构与另一个实体或结构区分开来，而不要求或者暗示这些实体或结构之间存在任何实际的关系或者顺序。本文中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
在本发明的描述中，需要理解的是，术语“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、 “底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。在本发明的描述中，除非另有规定和限定，需要说明的是，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是机械连接或电连接，也可以是两个元件内部的连通，可以是直接相连，也可以通过中间媒介间接相连，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。
根据本发明实施例的第一方面，提供了一种多联机空调，包括室外机，图1是根据一示例性实施例示出的一种多联机空调的结构示意图，如图1所示，其中，所述室外机包括：油分离器1和四通阀4，以及连接所述油分离器1和所述四通阀4的管路；
所述管路包括并联设置的第一管路26和第二管路27，其中，所述第一管路26上设有蓄热模块3和蓄热模块控制阀33，所述第二管路27上设有第一控制阀2；
当室外环境温度大于等于第一设定值时，通过控制所述蓄热模块控制阀33和所述第一控制阀2，使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通。
本发明实施例通过在所述油分离器1和所述四通阀4之间设置并联的所述第一管路26和所述第二管路27，所述第一管路26上设有蓄热模块3和蓄热模块控制阀33，所述第二管路27上设有第一控制阀2，当室外环境温度大于等于第一设定值时，通过控制蓄热模块控制阀33和所述第一控制阀2，使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，当所述工质经过所述蓄热模块3时，所述蓄热模块3与工质之间热量的传递，降低多联机空调的室外散热器17的散热负荷，避免所述室外散热器17的负荷过大而降低性能。
在一些可选的实施例中，所述四通阀4具有a端口、b端口、c端口和d端口，其中，所述油分离器1和所述四通阀4的a端口连接。
在一些可选的实施例中，所述第一设定值可为一范围值，如大于 20℃，小于等于30℃。
在一些可选的实施例中，所述第一设定值可为一具体值，如25℃。
夏天气温较高时，通过所述蓄热模块3吸收至少部分工质的热量，降低所述室外散热器17的散热负荷。
冬天气温较低时，所述蓄热模块3传递给工质热量，降低所述多联机空调的负荷。
当夏天气温很高时，即当室外环境温度大于等于第二设定值时，其中第二设定值大于第一设定值，则断开所述第一控制阀2，切断所述第二管路27，闭合所述蓄热模块控制阀33，使得工质全部经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，当所述工质经过所述蓄热模块3时，所述蓄热模块3吸收工质的热量，降低多联机空调的室外散热器17的散热负荷，避免所述室外散热器17的负荷过大而降低性能。
当室外环境温度大于等于第一设定值时，闭合蓄热模块控制阀33和所述第一控制阀2，使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，当所述工质经过所述蓄热模块3时，所述蓄热模块3吸收工质的热量，降低多联机空调的室外散热器17的散热负荷，避免所述室外散热器17的负荷过大而降低性能。
在一些可选的实施例中，所述第二设定值可为一范围值，如大于30℃，小于等于45℃。
在一些可选的实施例中，所述第二设定值可为一具体值，如40℃。
在一些可选的实施例中，所述多联机空调还包括：热水系统，所述热水系统通过第三管路28和第四管路29与所述蓄热模块3连接；
其中，所述第三管路28上设有第二控制阀5，所述第四管路29上设有第三控制阀6。
在所述多联机空调中增加热水系统，可将热水系统与空调系统结合起来，充分利用能源，避免资源的浪费。
在一些可选的实施例中，所述热水系统包括：太阳能集热器11以及与所述太阳能集热器11连接的水箱12；
所述太阳能集热器11的第一端口与所述水箱12的第一端口通过第五管路30连接，所述第五管路30上依次设有第四控制阀7、第一三通24和第六控制阀9，所述第四管路29通过所述第一三通24与所述第五管路30连接；
所述太阳能集热器11的第二端口与所述水箱12的第二端口通过第六管路31连接，所述第六管路31上依次设有第五控制阀8、第二三通25和第七控制阀10，所述第三管路28通过所述第二三通25与所述第六管路31连接。
通过设置所述第一三通24和所述第二三通25，将所述蓄热模块3和所述热水系统连接，将空调系统和热水系统结合起来，充分利用自然环境中的能量。
冬天白天时，当所述太阳能集热器11中冷媒的温度大于等于第三设定值时，断开所述第四控制阀7、所述第五控制阀8、闭合所述第二控制阀5、所述第三控制阀6、所述第六控制阀9和所述第七控制阀10，使得所述蓄热模块3吸收所述太阳能集热器11中的热量；冬天晚上时，当室外环境温度小于第四设定值时，闭合所述蓄热模块控制阀33和所述第一控制阀2，实现闭合所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，所述蓄热模块3传递热量到所述工质，降低所述压缩机14的负荷，实现白天通过所述蓄热模块吸收来自所述太阳能集热器11的热量，实现晚上气温低时，向空调系统补充热量，减少环境温度变化对所述压缩机14负荷的影响，充分利用来自所述太阳能集热器11的热量，节能环保，且可延长所述压缩机14的使用寿命。
在一些可选的实施例中，所述室外机还包括：气液分离器13；
所述气液分离器13的一端与压缩机14连接，另一端与所述四通阀4的c端口通过第七管路32连接，所述第七管路32上设有第八控制阀16，所述第八控制阀16用于控制所述第七管路32的通断。
在一些可选的实施例中，所述室外换热器17的两端分别与所述四通阀4的b端口和室内换热器23连接。
在所述室外换热器17与所述四通阀4的b端口连接的管路上，设有 第九控制阀19，可通过所述第九控制阀19控制这段管路的通断。
在一些可选的实施例中，在所述室外换热器17的出口和所述室内换热器23的入口之间的管路上，依次设有第十控制阀20，并联的第十一控制阀21和室外电子膨胀阀18，其中所述第十一控制阀21和所述室外电子膨胀阀18可选择使用。
在一些可选的实施例中，所述室内换热器23的数量为一个或者多个，每个所述室内换热器23配有室内电子膨胀阀22，在图1中设有两个室内换热器23，实现一个所述室外换热器17对应多个所述室内换热器23。
制冷循环时，所述压缩机14排出的制冷剂气体通过单向阀15、所述油分离器1、所述蓄热模块3和所述蓄热模块控制阀33或者所述第一控制阀2、由所述四通阀4的a端口和b端口连接，再通过所述第九控制阀19、所述室外换热器17、再经过所述第十一控制阀21或者所述室外电子膨胀阀18、所述第十控制阀20、所述室内电子膨胀阀22，所述室内换热器23后，由所述四通阀4的d端口和c端口相连，经所述第八控制阀16、所述气液分离器13、与所述压缩机14的吸气端连接，完成一次制冷循环。
制热循环时，所述压缩机14排出的制冷剂气体通过单向阀15、所述油分离器1、所述蓄热模块3和所述蓄热模块控制阀33或者所述第一控制阀2、由所述四通阀4的a端口和d端口连接，再通过所述室内换热器23、室内电子膨胀阀22、所述第十控制阀20、所述第十一控制阀21或者所述室外电子膨胀阀18、所述室外换热器17、所述第九控制阀19、由所述四通阀4的b端口和c端口相连，流过所述第八控制阀16、所述气液分离器13、与所述压缩机14的吸气端连接，完成一次制热循环。
在本申请实施例中通过增加所述蓄热模块3，可以实现在夏季气温高于第一预设值时，通过所述蓄热模块3吸收系统中至少部分工质的热量，用于加热所述水箱12中的水，分担所述室外散热器17的散热负荷；冬季时，当所述室外环境温度小于第四设定值时，通过所述蓄热模块3吸收所述太阳能集热器11的热量补充到空调系统当中，所述蓄热模块3进一步的作用体现在夏季和冬季，无论室外环境温度如何变化，通过对所述蓄热模块3的控制，可实现所述压缩机14频率在一个较为稳定的范围内，即能保证整个多联机空调的整体性能；
因此，在系统中增加所述蓄热模块3能够减小室外工况波动对所述压缩机14的影响，提高系统可靠性，延长所述压缩机14的使用寿命。
再者，在本申请实施例中，所述蓄热模块3在一定情况下能够提高多联机的循环性能系数(Coefficient of Performance，COP),如夏季室外温度超出多联机空调的额定工况温度较多时，由于增加了所述蓄热模块3，使得所述压缩机14仍然能够以额定工况的附近运行，这样使得整机的耗功要比不增加所述蓄热模块3小，而制冷量不变的情况下，整机效率就会相较于不增加所述蓄热模块3的时候有所提高，冬季室外工况低于额定工况较大时，整机效率同样会比不增加所述蓄热模块3要高，因此，所述增加所述蓄热模块3将会明显提高多联机空调的效率。
根据本发明实施例的第二方面，提供了一种多联机空调的控制方法，所述多联机空调为上面所述的多联机空调，如图2所示，所述的方法包括：
S201、获取室外环境温度；
S202、当室外环境温度满足一定条件时，通过控制所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，其中，所述蓄热模块3从所述工质中吸收热量。
在一些可选的实施例中，所述第一设定值可为一范围值，如大于20℃，小于等于30℃。
在一些可选的实施例中，所述第一设定值可为一具体值，如25℃。
在一些可选的实施例中，所述蓄热模块3从所述工质中吸收热量之后，如图3所示，其中S301和S302如下：
S301、获取室外环境温度；
S302、当室外环境温度满足一定条件时，通过控制所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，其中，所述蓄热模块3从所述工质中吸收热量。
其中，室外环境温度满足一定条件包括室外环境温度大于等于第一设定值和室外环境温度小于第四设定值。
在S301和S302之后，所述的方法还包括：
S303、闭合所述第二控制阀5、所述第三控制阀6、所述第四控制阀7、所述第五控制阀8，断开所述第六控制阀9和所述第七控制阀10，使得所述蓄热模块3通过吸收的热量加热所述水箱12中的水。
通过本方法，可将所述蓄热模块3中的热量加热所述水箱12中的水，实现能量的充分利用。
在一些可选的实施例中，图4是根据一示例性实施例示出的一种多联机空调的热水系统的控制方法流程图，如图4所示，所述的方法包括：
S401、获取所述太阳能集热器11中冷媒的温度；
S402、当所述冷媒的温度大于等于第三设定值时，断开所述第四控制阀7、所述第五控制阀8、闭合所述第二控制阀5、所述第三控制阀6、所述第六控制阀9和所述第七控制阀10，使得所述蓄热模块3吸收所述太阳能集热器11中的热量；
S403、当所述室外环境温度小于第四设定值时，闭合所述蓄热模块控制阀33和所述第一控制阀2，实现闭合所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，所述蓄热模块3传递热量到所述工质，降低所述压缩机14的负荷。
此方法适用于冬天，当白天温度高时，所述冷媒的温度大于等于第三设定值时，通过断开所述第四控制阀7、所述第五控制阀8、闭合所述第二控制阀5、所述第三控制阀6、所述第六控制阀9和所述第七控制阀10，使得所述蓄热模块3吸收所述太阳能集热器11中的热量；
当晚上温度低的时候，就是当所述室外环境温度小于第四设定值时，通过闭合所述蓄热模块控制阀33和所述第一控制阀2、可使得至少部分工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，所述蓄热模块3传递热量到所述工质，降低所述压缩机14的负荷。
当然，也可以通过闭合所述蓄热模块控制阀33，断开所述第一控制阀2来使得全部工质经所述蓄热模块3在所述油分离器1和所述四通阀4之间的所述第一管路26内流通，所述蓄热模块3传递热量到所述工质， 降低所述压缩机14的负荷。
在一些可选的实施例中，所述第一设定值可为一范围值，如大于20℃，小于等于30℃。
在一些可选的实施例中，所述第一设定值可为一具体值，如25℃。
在一些可选的实施例中，所述第二设定值可为一范围值，如大于30℃，小于等于45℃。
在一些可选的实施例中，所述第二设定值可为一具体值，如40℃。
在一些可选的实施例中，所述第三设定值可为一范围值，如大于35℃，小于等于60℃。
在一些可选的实施例中，所述第三设定值可为一具体值，如40℃。
在一些可选的实施例中，所述第四设定值可为一范围值，如大于-20℃，小于等于3℃。
在一些可选的实施例中，所述第四设定值可为一具体值，如0℃。
在本申请实施例中通过增加所述蓄热模块3，可以实现在夏季气温高于第一预设值时，通过所述蓄热模块3吸收系统中至少部分工质的热量，用于加热所述水箱12中的水，分担所述室外散热器17的散热负荷；冬季时，当所述室外环境温度小于第四设定值时，通过所述蓄热模块3吸收所述太阳能集热器11的热量补充到空调系统当中，所述蓄热模块3进一步的作用体现在夏季和冬季，无论室外环境温度如何变化，通过对所述蓄热模块3的控制，可实现所述压缩机14频率在一个较为稳定的范围内，即能保证整个多联机空调的整体性能；
因此，在系统中增加所述蓄热模块3能够减小室外工况波动对所述压缩机14的影响，提高系统可靠性，延长所述压缩机14的使用寿命。
再者，在本申请实施例中，所述蓄热模块3在一定情况下能够提高多联机的循环性能系数(Coefficient of Performance，COP),如夏季室外温度超出多联机空调额定工况温度较多时，由于增加了所述蓄热模块3，使得所述压缩机14仍然能够以额定工况附近运行，这样使得整机的耗功要比不增加所述蓄热模块3小，而制冷量不变的情况下，整机效率就会相较于不增加所述蓄热模块3的时候有所提高，冬季室外工况低于额定工况较大时，整机效率同样会比不增加所述蓄热模块3要高,因此， 所述增加所述蓄热模块3将会明显提高多联机空调的效率。
文中涉及到的控制阀可为电磁阀，如所述第一控制阀2、所述第二控制阀5、以及所述第三控制阀6等等。
本发明并不局限于上面已经描述并在附图中示出的结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。

Claims (10)

  1. 一种多联机空调，包括室外机，其中所述室外机包括：油分离器和四通阀，其特征在于，所述室外机还包括：
    连接所述油分离器和所述四通阀的管路；
    所述管路包括并联设置的第一管路和第二管路，其中，所述第一管路上设有蓄热模块和蓄热模块控制阀；
    所述第二管路上设有第一控制阀；
    当室外环境温度满足一定条件时，通过控制所述第一管路和所述第二管路，使得至少部分工质经所述蓄热模块在所述油分离器和所述四通阀之间的所述第一管路内流通。
  2. 根据权利要求1所述的一种多联机空调，其特征在于，所述多联机空调还包括：热水系统，所述热水系统通过第三管路和第四管路与所述蓄热模块连接；
    其中，所述第三管路上设有第二控制阀，所述第四管路上设有第三控制阀。
  3. 根据权利要求2所述的一种多联机空调，其特征在于，所述热水系统包括：太阳能集热器以及与所述太阳能集热器连接的水箱；
    所述太阳能集热器的第一端口与所述水箱的第一端口通过第五管路连接，所述第五管路上依次设有第四控制阀、第一三通和第六控制阀，所述第四管路通过所述第一三通与所述第五管路连接；
    所述太阳能集热器的第二端口与所述水箱的第二端口通过第六管路连接，所述第六管路上依次设有第五控制阀、第二三通和第七控制阀，所述第三管路通过所述第二三通与所述第六管路连接。
  4. 根据权利要求2所述的一种多联机空调，其特征在于，所述室外机还包括：气液分离器；
    所述气液分离器的一端与压缩机连接，另一端与所述四通阀通过第七管路连接，所述第七管路上设有第八控制阀。
  5. 根据权利要求3所述的一种多联机空调，其特征在于，所述室外机还包括：室外换热器，所述室外换热器的两端分别与所述四通阀和室 内换热器连接。
  6. 根据权利要求5所述的一种多联机空调，其特征在于，在所述室外换热器与所述四通阀连接的管路上，设有第九控制阀。
  7. 根据权利要求5所述的一种多联机空调，其特征在于，在所述室外换热器的出口和所述室内换热器的入口之间的管路上，依次设有第十控制阀，并联的第十一控制阀和室外电子膨胀阀。
  8. 根据权利要求1所述的一种多联机空调，其特征在于，室外环境温度满足一定条件包括室外环境温度大于等于第一设定值和室外环境温度小于第四设定值。
  9. 一种多联机空调的控制方法，所述多联机空调为权1-权8中任一项所述的多联机空调，其特征在于，所述的方法包括：
    获取室外环境温度；
    当所述室外环境温度满足一定条件时，通过控制所述第一管路和所述第二管路，使得至少部分工质经蓄热模块在油分离器和四通阀之间的所述第一管路内流通，其中，所述蓄热模块从所述工质中吸收热量。
  10. 根据权利要求9所述的一种多联机空调的控制方法，其特征在于，所述蓄热模块从所述工质中吸收热量之后，所述的方法还包括：
    闭合第二控制阀、第三控制阀、第四控制阀、第五控制阀，断开第六控制阀和第七控制阀，使得所述蓄热模块通过吸收的热量加热水箱中的水。
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