CN111595002B - Air conditioning system, control method thereof, control device thereof and readable storage medium - Google Patents
Air conditioning system, control method thereof, control device thereof and readable storage medium Download PDFInfo
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- CN111595002B CN111595002B CN202010420302.XA CN202010420302A CN111595002B CN 111595002 B CN111595002 B CN 111595002B CN 202010420302 A CN202010420302 A CN 202010420302A CN 111595002 B CN111595002 B CN 111595002B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- 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
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioning system, a control method, a control device and a readable storage medium thereof, wherein the air conditioning system comprises an outdoor unit, M indoor units and a hydraulic module, the M indoor units and the hydraulic module are respectively connected with the outdoor unit, M is a positive integer, the hydraulic module comprises a first heat exchanger, a second heat exchanger, a first compressor and a switching unit, and the method comprises the following steps: acquiring the running state of an outdoor unit and/or acquiring the running state of each indoor unit; and controlling the switching unit according to the running state of the outdoor unit and/or the running state of each indoor unit so as to switch the running mode of the hydraulic module. According to the control method of the air conditioning system, the operation modes of the hydraulic module can be switched through the switching unit according to the operation states of the outdoor unit and the indoor unit, so that the indoor unit can be assisted to heat quickly, the defrosting time of the outdoor unit can be shortened, the defrosting efficiency can be improved, and the comfort level of a user in the use process can be improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioning system, a control method and a control device thereof and a readable storage medium.
Background
In recent years, traditional hot water heating systems such as solar thermal collectors and photovoltaic panels occupy a large space when installed on the roof, and particularly for hotels, the roof is expected to be built into swimming pools or leisure spaces, so that the hydraulic module is a renewable energy source, occupies a small area, consumes low energy, and is increasingly popular in the market. The existing air conditioning system, especially the three-pipe heating recovery system, can realize the functions of simultaneously refrigerating and heating the inner side, so the tail end of the system can be connected with an air-cooled indoor unit and a hydraulic module, the hydraulic module is positioned to provide the functions of heating water and heating, and the system plays a role of heating the indoor unit in the air conditioning system.
However, when the hydro module is operated in the heating mode during the heating operation of the air conditioning system in the cold winter season, the system may have the following problems: on one hand, the heat absorbed by the system from the air is limited, and the starting load of the indoor unit is large, so that the phenomena of small air supply temperature difference, low heating speed and poor heating effect of the indoor unit are caused, the indoor environment temperature is influenced, and the comfort level of an indoor user in the using process is further influenced; on the other hand, in order to ensure the normal operation of the system and the proper air supply temperature difference on the inner side, the defrosting control of the external heat exchanger needs to be regularly carried out. In winter in the north, the phenomenon that the lower layer of the outer machine heat exchanger, particularly the outer machine heat exchanger, is thick in frosting and then is not clean in defrosting can occur due to low air temperature. Therefore, under the conditions of long system operation time and a plurality of defrosting periods, frost layers are gradually accumulated, so that the heating capacity of the system is reduced, certain influence is generated on the reliability of the system operation, and the time without air supply temperature difference on the inner side is long due to the long defrosting process time, the indoor environment temperature is influenced, and the comfort degree of an indoor user in the use process is further influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present invention is to provide a control method for an air conditioning system, which is capable of switching an operation mode of a hydraulic module according to operation states of an outdoor unit and an indoor unit through a switching unit, so as to facilitate quick heating of the indoor unit, shorten defrosting time of the outdoor unit, improve defrosting efficiency, and improve comfort of a user during use.
A second object of the present invention is to provide a control device for an air conditioning system.
A third object of the present invention is to provide an air conditioning system.
A fourth object of the invention is to propose a readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a control method for an air conditioning system, where the air conditioning system includes an outdoor unit, M indoor units, and a hydraulic module, the M indoor units and the hydraulic module are respectively connected to the outdoor unit, M is a positive integer, the hydraulic module includes a first heat exchanger, a second heat exchanger, a first compressor, and a switching unit, a first side of the first heat exchanger is connected to the outdoor unit, a second side of the second heat exchanger is connected to a waterway module, the first compressor and the switching unit are disposed between a second side of the first heat exchanger and a first side of the second heat exchanger, a first end of the switching unit is connected to the first heat exchanger, a second end of the switching unit is connected to a return air port of the first compressor, and a third end of the switching unit is connected to the second heat exchanger, the fourth end of the switching unit is connected to the exhaust port of the first compressor, and the method comprises the following steps: acquiring the running state of the outdoor unit and/or acquiring the running state of each indoor unit; and controlling the switching unit according to the running state of the outdoor unit and/or the running state of each indoor unit so as to switch the running mode of the hydraulic module.
According to the control method of the air conditioning system, firstly, the running state of the outdoor unit and/or the running state of each indoor unit are obtained, and then the switching unit is controlled according to the running state of the outdoor unit and/or the running state of each indoor unit so as to switch the running mode of the hydraulic module. Therefore, the control method can switch the operation modes of the hydraulic module through the switching unit according to the operation states of the outdoor unit and the indoor unit, so that the control method is beneficial to assisting the indoor unit to heat quickly, is also beneficial to shortening defrosting time of the outdoor unit, improves defrosting efficiency and improves comfort level of a user in a using process.
In addition, the control method of the air conditioning system according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit includes: and determining that at least one indoor unit is started and performs heating operation according to the operation state of each indoor unit, controlling the first compressor to be started, and controlling the switching unit to work in a first state so as to enable the hydraulic module to perform cooling operation.
According to an embodiment of the present invention, the controlling the switching unit according to an operation state of the outdoor unit and/or an operation state of each of the indoor units further includes: and if the M indoor units are determined not to be subjected to heating operation according to the operation state of each indoor unit, controlling the first compressor and the switching unit according to a control instruction.
According to an embodiment of the present invention, before determining that at least one of the indoor units is turned on and performs a heating operation according to an operation state of each of the indoor units, it is further determined that the outdoor unit is turned on.
According to an embodiment of the present invention, the controlling the switching unit according to the operation state of the outdoor unit and the operation state of each of the indoor units includes: and if the outdoor unit is determined to enter the defrosting mode according to the running state of the outdoor unit, the first compressor is controlled to be started, and the switching unit is controlled to work in a first state, so that the hydraulic module performs refrigerating operation.
According to an embodiment of the present invention, the controlling the switching unit according to an operation state of the outdoor unit and/or an operation state of each of the indoor units further includes: and if the outdoor unit is determined not to enter the defrosting mode according to the running state of the outdoor unit, controlling the first compressor and the switching unit according to a control instruction.
According to an embodiment of the present invention, before it is determined that the outdoor unit enters the defrosting mode according to the operation state of the outdoor unit, it is also determined that the outdoor unit performs a heating operation.
In order to achieve the above object, a second aspect of the present invention provides a control device for an air conditioning system, where the air conditioning system includes an outdoor unit, M indoor units, and a hydraulic module, the M indoor units and the hydraulic module are respectively connected to the outdoor unit, M is a positive integer, the hydraulic module includes a first heat exchanger, a second heat exchanger, a first compressor, and a switching unit, a first side of the first heat exchanger is connected to the outdoor unit, a second side of the second heat exchanger is connected to a waterway module, the first compressor and the switching unit are disposed between a second side of the first heat exchanger and a first side of the second heat exchanger, a first end of the switching unit is connected to the first heat exchanger, a second end of the switching unit is connected to a return air port of the first compressor, and a third end of the switching unit is connected to the second heat exchanger, the fourth end of the switching unit is connected with the exhaust port of the first compressor, and the device comprises: the acquisition module is used for acquiring the running state of the outdoor unit and/or acquiring the running state of each indoor unit; and the control module is used for controlling the switching unit according to the running state of the outdoor unit and/or the running state of each indoor unit so as to switch the running mode of the hydraulic module.
According to the control device of the air conditioning system, the operation state of the outdoor unit and/or the operation state of each indoor unit are obtained through the obtaining module, and the control module controls the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit so as to switch the operation mode of the hydraulic module. Therefore, the control device can switch the operation modes of the hydraulic module through the switching unit according to the operation states of the outdoor unit and the indoor unit, so that the control device is beneficial to assisting the indoor unit to heat quickly, is also beneficial to shortening defrosting time of the outdoor unit, improves defrosting efficiency and improves comfort level of a user in a using process.
In order to achieve the above object, an embodiment of a third aspect of the present invention provides an air conditioning system including a control device of the air conditioning system according to the embodiment of the second aspect of the present invention.
According to the air conditioning system provided by the embodiment of the invention, the control device of the air conditioning system provided by the embodiment of the invention can switch the operation modes of the hydraulic module through the switching unit according to the operation states of the outdoor unit and the indoor unit, so that the quick heating of the indoor unit is facilitated, the defrosting time of the outdoor unit is facilitated to be shortened, the defrosting efficiency is improved, and the comfort level of a user in the use process is improved.
In order to achieve the above object, a fourth aspect of the present invention provides a readable storage medium having stored thereon a control program of an air conditioning system, which when executed by a processor, implements the control method of the air conditioning system set forth in the first aspect of the present invention.
According to the readable storage medium of the embodiment of the invention, when the control program of the air conditioning system stored on the readable storage medium is executed by the processor, the operation modes of the hydraulic module can be switched through the switching unit according to the operation states of the outdoor unit and the indoor unit, so that the quick heating of the indoor unit is facilitated, the defrosting time of the outdoor unit is facilitated to be shortened, the defrosting efficiency is improved, and the comfort level of a user in the use process is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a hydraulic module of an air conditioning system according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an air conditioning system according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air conditioning system according to an example of the present invention;
fig. 4 is a flowchart of a control method of an air conditioning system according to another example of the present invention;
fig. 5 is a block diagram of a control apparatus of an air conditioning system according to an embodiment of the present invention;
fig. 6 is a block diagram of an air conditioning system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A control method, a control device, and a readable storage medium of an air conditioning system according to an embodiment of the present invention are described below with reference to the accompanying drawings.
It should be noted that, when the air conditioning system is operated in the heating mode in cold winter, the humidity of the outdoor side is relatively high, and the demand of the indoor side for heating and hot water supply is urgent, the situation of full load operation of the hydraulic module and the heating internal unit may occur. Under this condition, on the one hand, if the hydraulic module start-up load is great then the phenomenon that the hydraulic module snatchs the refrigerant appears very easily, also the refrigerant is bias flow, more refrigerant flow direction hydraulic module's first heat exchanger carries out the heat transfer, and the refrigerant that flows to the indoor set will reduce, simultaneously because the external environment temperature is lower, it is limited to lead to outer quick-witted heat exchanger to regard as the evaporimeter heat that absorbs from the environment, thereby lead to the high pressure of off-premises station to reduce, the low pressure reduces, under the great condition of indoor set start-up load, can appear indoor set air supply temperature difference less, the heating speed is slow, the relatively poor problem of heating effect.
On the other hand, the outdoor unit heat exchanger is used as an evaporator, and due to the fact that the outside air temperature is low, the heat absorbed by the outdoor unit heat exchanger from the outside is limited, the low pressure of the system is very low, and the outdoor unit heat exchanger is frosted seriously. The frost layer is thicker and thicker along with the accumulation of time, so that the heat absorption of the outer machine heat exchanger is influenced, and the heating capacity of the system is seriously reduced. Therefore, in order to ensure normal operation of the system and a proper air supply temperature difference at the indoor side under the condition that the air conditioning system performs low-temperature heating in winter, the external heat exchanger needs to be subjected to defrosting control regularly. In winter in the north, the phenomenon that the lower layer of the outer machine heat exchanger, particularly the outer machine heat exchanger, has thick frosting and incomplete frost melting can occur due to low temperature. Therefore, under the conditions of long operation time and a plurality of defrosting periods, frost layers are gradually accumulated, so that the problem of reduction of the heating capacity of the system is caused, certain influence is generated on the operation reliability of the system, and the phenomenon of long time without air supply temperature difference at the indoor side is caused due to long defrosting process time, so that the indoor environment temperature is seriously influenced.
Therefore, in order to solve the above problems, an embodiment of the present invention provides a control method for an air conditioning system, so as to enable a heating internal unit to perform rapid heating, improve defrosting efficiency, and shorten defrosting time, so as to improve comfort of a user.
Fig. 1 is a schematic structural diagram of a hydro module of an air conditioning system according to an embodiment of the present invention.
The air conditioning system of the embodiment comprises an outdoor unit, M indoor units and a hydraulic module, wherein the M indoor units and the hydraulic module are respectively connected with the outdoor unit, and M is a positive integer.
As shown in fig. 1, the hydraulic module includes a first heat exchanger, a second heat exchanger, a first compressor and a switching unit, a first side of the first heat exchanger is connected to the outdoor unit, a second side of the second heat exchanger is connected to the waterway module, the first compressor and the switching unit are disposed between a second side of the first heat exchanger and a first side of the second heat exchanger, a first end 1 of the switching unit is connected to the first heat exchanger, a second end 2 of the switching unit is connected to a return port of the first compressor, a third end 3 of the switching unit is connected to the second heat exchanger, and a fourth end 4 of the switching unit is connected to a discharge port of the first compressor, wherein the switching unit may be a four-way reversing valve. The hydro module also includes a first electronic expansion valve and a second electronic expansion valve.
Fig. 2 is a flowchart of a control method of an air conditioning system according to an embodiment of the present invention.
As shown in fig. 2, the method comprises the steps of:
and S1, acquiring the operation state of the outdoor unit and/or acquiring the operation state of each indoor unit.
Wherein, the running state of off-premises station includes shutdown, heating running state and refrigeration running state, and the running state of indoor set can include: the system comprises a starting and heating running state (the indoor machine heat exchanger is used as a condenser), a starting and cooling running state (the indoor machine heat exchanger is used as an evaporator) and a shutdown state without starting.
Specifically, when the air conditioning system is in operation or not in operation, the current operation state of the outdoor unit and/or the current operation state of the M indoor units can be detected in real time, and the current operation state of the outdoor unit and/or each indoor unit can be displayed through a display screen of a remote controller controlling the air conditioning system, so that a user can conveniently check the current operation state at any time.
And S2, controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit so as to switch the operation mode of the hydraulic module.
The operation modes of the hydraulic module can comprise a heating or hot water heating operation mode, a cooling operation mode and a shutdown mode.
Specifically, the switching unit is controlled according to the operation state of the outdoor unit and/or the operation state of each indoor unit, so that the operation mode of the hydraulic module is adjusted, for example, when the opened indoor units of the air conditioning system are all operated in a heating mode, and the hydraulic module is operated in a heating or hot water mode, in order to prevent the phenomena that the temperature difference of air supply of the indoor units is small and the heating speed is slow due to the fact that refrigerants drift to the hydraulic module in a low-temperature environment, the hydraulic module can be switched from the heating operation mode to a cooling operation mode, so that the refrigerant drift is avoided, the temperature difference air supply of the indoor units can be increased, and the indoor units can be rapidly heated.
For another example, when the outdoor unit performs defrosting, in order to prevent the phenomena of reduced heating capacity and long defrosting time of the system caused by accumulation of frost layers when the outside air temperature is too low, the hydraulic module can be switched from the heating operation mode to the cooling operation mode, so that the defrosting time is shortened, the defrosting efficiency is improved, the heating capacity of the system is improved, and the reliability of the operation of the system is ensured.
It should be noted that the hydraulic module in the existing air conditioning system is only positioned to provide heating water and heating functions, and the air conditioning system only serves as a heating inner machine, that is, only serves as a condenser, and compared with the technology, the switching unit capable of switching the operation mode of the hydraulic module is arranged in the hydraulic module, so that the operation state of the hydraulic module is switched according to the operation states of the outdoor unit and the indoor unit, the hydraulic module is not limited to the heating operation mode, and the problem that the operation mode of the hydraulic module cannot be adjusted when the system operates in the heating mode in cold winter is solved.
Therefore, the control method of the air conditioning system can switch the operation modes of the hydraulic module through the switching unit, so that the quick heating of the indoor unit is facilitated, the defrosting time of the outdoor unit is shortened, the defrosting efficiency is improved, and the comfort level of a user in the using process is improved.
In an embodiment of the present invention, the controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit in the step S2 may include: and determining that at least one indoor unit is started and performs heating operation according to the operation state of each indoor unit, controlling the first compressor to be started, and controlling the switching unit to work in the first state so as to enable the hydraulic module to perform cooling operation.
Specifically, if at least one indoor unit of the M indoor units is turned on and performs heating operation, the indoor unit heat exchanger is used as a condenser, the outdoor unit heat exchanger is used as an evaporator, and the air conditioning system operates in a heating mode, the first compressor of the hydraulic module is controlled to be turned on, and the switching unit is controlled to operate in a first state, so that the hydraulic module performs cooling operation, wherein the first state can be a power-on state of the switching unit, and a third end and a first end of the switching unit are communicated in the first state. That is to say, the switching unit is controlled to be powered on, and at the moment, the operation principle of the hydraulic module is as follows: the high-temperature high-pressure gaseous refrigerant (R134A refrigerant) compressed by the first compressor enters the first heat exchanger through the switching unit, exchanges heat with the high-pressure liquid refrigerant (R410A refrigerant) flowing out of the indoor unit (heating indoor unit) in heating operation in the first heat exchanger to become the high-pressure liquid refrigerant, the high-pressure liquid refrigerant is throttled by the second electronic expansion valve to reduce the pressure and the temperature of the high-pressure liquid refrigerant, then enters the second heat exchanger to absorb the heat of water to become the low-temperature low-pressure gaseous refrigerant, and flows back to the first compressor through the switching unit to perform the next round of circulation. It will be appreciated that when the hydro module is operating in the cooling mode, the first heat exchanger functions as a condenser and the second heat exchanger functions as an evaporator.
That is to say, make the water conservancy module carry out refrigeration operation through control switching unit, make the water conservancy module act as air conditioning system's evaporimeter, increase the evaporimeter heat transfer area of system, improve its heat absorption efficiency, the R134A refrigerant of water conservancy module heats for the R410A refrigerant of high-pressure side after absorbing the heat from high-temperature water, make the temperature and the pressure of R410A refrigerant further rise, the R410A refrigerant circulation after the heating reaches the heating indoor set, the air supply difference in temperature of heating the indoor set has been improved, make the heating efficiency of heating the indoor set improve, reach the effect that the heating indoor set heats fast.
It should be understood that after the hydraulic module performs the cooling operation for a period of time, it may be determined whether the indoor ambient temperature reaches the set target ambient temperature, and if so, the switching unit is controlled to be powered down, and the operation mode before the cooling operation of the hydraulic module is resumed, such as a heating mode or a hot water heating mode.
Therefore, when at least one indoor unit is started and performs heating operation in M rooms of the air conditioning system, the hydraulic module performs cooling operation through the control switching unit, the heat absorption efficiency of the evaporator is improved, the air supply temperature difference of the heating indoor unit can be increased, the heating capacity of the system is improved, the purpose of rapidly heating the heating indoor unit is achieved, and the comfort of the system is improved.
Further, the controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit in the step S2 may further include: and determining that the M indoor units do not perform heating operation according to the operation state of each indoor unit, and controlling the first compressor and the switching unit according to the control instruction.
Specifically, if none of the M indoor units performs heating operation, the first compressor and the switching unit are controlled according to the control instruction to control the hydraulic module to be started or shut down and the operation mode thereof. The control instruction may be an instruction input by a user according to actual needs.
It should be noted that, under normal conditions, when the air conditioning system performs normal heating operation and the indoor side temperature is comfortable, the first compressor may be controlled to start according to the control instruction, and the switching unit is controlled to power down, so that the hydraulic module performs heating operation or provides heating water.
For example, if the control instruction indicates that the system has a heating requirement and the indoor unit does not have the heating requirement, the switching unit can be controlled to be powered off to control the hydraulic module to perform heating operation, so that the heating requirement of the air conditioning system is met.
In one example, before determining that at least one indoor unit is turned on and performs a heating operation according to an operation state of each indoor unit, it may be further determined that the outdoor unit is turned on.
Specifically, when the starting of the outdoor unit is detected, the hydraulic module and the indoor unit can be judged, if the indoor unit does not have the heating requirement, the switching unit can be controlled to be powered off, and the hydraulic module is controlled to perform heating operation or hot water operation according to the actual requirement of a user, at the moment, the hydraulic module is used as a condenser of the air conditioning system, the first heat exchanger of the hydraulic module is used as an evaporator, and the second heat exchanger of the hydraulic module is used as a condenser; if the indoor unit has a heating requirement, the first compressor is controlled to be started, the switching unit is controlled to work in the first state, so that the hydraulic module performs cooling operation, and at the moment, the refrigerant R134A of the hydraulic module absorbs the heat of water and supplies heat to the refrigerant R410A on the high-pressure side, so that the temperature and the pressure of the refrigerant on the outdoor unit side are further improved, and the purpose of quickly heating the indoor unit side is achieved.
In this example, as shown in fig. 3, the control method of the air conditioning system may include the steps of:
s301, acquiring the running state of the outdoor unit and the running state of each indoor unit.
S302, whether the outdoor unit is started or not is judged, and if yes, the step S303 is executed.
S303, judging whether at least one indoor unit is started and performing heating operation in the M indoor units, and if so, executing the step S304; if not, step S305 is performed.
And S304, controlling the first compressor to be started, and controlling the switching unit to work in a first state so as to enable the hydraulic module to perform refrigeration operation.
And S305, controlling the first compressor and the switching unit according to the control command.
In an embodiment of the present invention, the controlling the switching unit according to the operation state of the outdoor unit and the operation state of each indoor unit in the step S2 may include: and if the outdoor unit is determined to enter the defrosting mode according to the running state of the outdoor unit, the first compressor is controlled to be started, and the switching unit is controlled to work in the first state, so that the hydraulic module performs refrigerating operation.
Specifically, if the outdoor unit enters a defrosting mode, that is, the outdoor unit is defrosted by a high-temperature high-pressure gaseous refrigerant, the first compressor of the hydraulic module is controlled to be started, and the switching unit is controlled to operate in a first state, so that the hydraulic module performs cooling operation, where the first state may refer to a power-on state of the switching unit, and in this state, the third end and the first end of the switching unit are communicated. At this time, the operation principle of the hydraulic module is as follows: the high-temperature high-pressure gaseous refrigerant (R134A refrigerant) compressed by the first compressor enters the first heat exchanger through the switching unit, exchanges heat with the high-pressure liquid refrigerant (R410A refrigerant) flowing out of the heating internal unit in the first heat exchanger to become the high-pressure liquid refrigerant, the high-pressure liquid refrigerant is throttled by the second electronic expansion valve to reduce the pressure and the temperature of the high-pressure liquid refrigerant, then enters the second heat exchanger to absorb the heat of water to become the low-temperature low-pressure gaseous refrigerant, and flows back to the compressor through the switching unit to perform the next cycle.
That is to say, the switching unit is controlled to enable the hydraulic module to perform cooling operation, the hydraulic module is enabled to serve as an evaporator of an air conditioning system, the heat exchange area of the evaporator of the whole system is increased, and the heat absorption efficiency of the evaporator is improved.
Therefore, when the outdoor unit enters a defrosting mode, the hydraulic module is controlled to perform refrigerating operation through the control switching unit, the heat absorption efficiency of the evaporator is improved, the defrosting efficiency can be improved, the defrosting time is shortened, and the comfort of indoor temperature is improved.
Further, the controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit in the step S2 may further include: and if the outdoor unit is determined not to enter the defrosting mode according to the running state of the outdoor unit, controlling the first compressor and the switching unit according to the control instruction.
Specifically, if the outdoor unit does not enter the defrosting mode, the first compressor and the switching unit are controlled according to the control instruction so as to control the start or the close of the hydraulic module and the operation mode of the hydraulic module. The control instruction may be an instruction input by a user according to actual needs.
In one example, before determining that the outdoor unit enters the defrosting mode according to the operation state of the outdoor unit, it is also determined that the outdoor unit performs a heating operation.
Specifically, after the running state of the outdoor unit is obtained, whether the outdoor unit runs in the heating mode or not can be judged according to the running state of the outdoor unit, if yes, whether the outdoor unit enters the defrosting mode or not is judged according to the running state of the outdoor unit, and the hydraulic module is controlled when the outdoor unit enters the defrosting mode or does not enter the defrosting mode.
In this example, as shown in fig. 4, the control method of the air conditioning system may include the steps of:
s401, the running state of the outdoor unit is obtained.
S402, determining whether the outdoor unit performs a heating operation according to the operation state of the outdoor unit, and if so, executing step S403.
S403, judging whether the outdoor unit enters a defrosting mode according to the running state of the outdoor unit, and if so, executing the step S404; if not, step S405 is performed.
And S404, controlling the switching unit to work in a first state so as to enable the hydraulic module to perform cooling operation.
And S405, controlling the first compressor and the switching unit according to the control command.
In summary, in the control method of the air conditioning system, when at least one indoor unit in M rooms of the air conditioning system is started and performs heating operation, the hydraulic module performs cooling operation by controlling the switching unit, so that the heat absorption efficiency of the evaporator is improved, the air supply temperature difference of the heating indoor unit can be increased, the heating capacity of the system is improved, and the purpose of rapidly heating the heating indoor unit is achieved; when the outdoor unit enters a defrosting mode, the hydraulic module is controlled to perform refrigerating operation through the switching unit, and the heat absorption efficiency of the evaporator is improved, so that the defrosting efficiency can be improved, the defrosting time is shortened, and the comfort of indoor temperature is improved.
In order to implement the above embodiments, the present invention further provides a control device of an air conditioning system. Fig. 5 is a block diagram of a control apparatus of an air conditioning system according to an embodiment of the present invention.
The air conditioning system of the embodiment comprises an outdoor unit, M indoor units and a hydraulic module, wherein the M indoor units and the hydraulic module are respectively connected with the outdoor unit, and M is a positive integer. Referring to fig. 1, the hydraulic module includes a first heat exchanger, a second heat exchanger, a first compressor and a switching unit, a first side of the first heat exchanger is connected to the outdoor unit, a second side of the second heat exchanger is connected to the waterway module, the first compressor and the switching unit are disposed between a second side of the first heat exchanger and a first side of the second heat exchanger, a first end of the switching unit is connected to the first heat exchanger, a second end of the switching unit is connected to a return air port of the first compressor, a third end of the switching unit is connected to the second heat exchanger, and a fourth end of the switching unit is connected to an exhaust port of the first compressor.
As shown in fig. 5, the control apparatus 100 includes an acquisition module 101 and a control module 102.
The acquiring module 101 is configured to acquire an operating state of an outdoor unit and/or an operating state of each indoor unit; the control module 102 is configured to control the switching unit according to an operation state of the outdoor unit and/or an operation state of each indoor unit, so as to switch an operation mode of the hydraulic module.
Specifically, in the operation process of the air conditioning system, firstly, the operation state of the outdoor unit and/or the operation state of each indoor unit can be acquired through the acquisition module 102; and then the control module 102 controls the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit to switch the operation mode of the hydraulic module.
It should be noted that the foregoing explanation of the embodiment of the control method of the air conditioning system is also applicable to the control device of the air conditioning system of the embodiment, and details are not repeated here.
The control device of the air conditioning system can switch the operation modes of the hydraulic module through the switching unit, so that the quick heating of the indoor unit is facilitated, the defrosting time of the outdoor unit is shortened, the defrosting efficiency is improved, and the comfort level of a user in the using process is improved.
In order to implement the above embodiments, the present invention further provides an air conditioning system, and fig. 6 is a block diagram of the air conditioning system according to the embodiment of the present invention.
As shown in fig. 6, the air conditioning system 1000 includes the control device 100 of the air conditioning system according to the present invention.
According to the air conditioning system, the control device of the air conditioning system provided by the embodiment of the invention can be used for switching the operation modes of the hydraulic module through the switching unit, so that the quick heating of the indoor unit is facilitated, the defrosting time of the outdoor unit is shortened, the defrosting efficiency is improved, and the comfort level of a user in the using process is improved.
In order to implement the above-mentioned embodiments, the present invention also proposes a readable storage medium having stored thereon a control program of an air conditioning system, which when executed by a processor, implements the control method of the air conditioning system of the above-mentioned embodiments.
When the control program of the air conditioning system stored on the readable storage medium is executed by the processor, the operation mode of the hydraulic module can be switched through the switching unit, so that the quick heating of the indoor unit is facilitated, the defrosting time of the outdoor unit is shortened, the defrosting efficiency is improved, and the comfort level of a user in the using process is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A control method of an air conditioning system is characterized in that the air conditioning system comprises an outdoor unit, M indoor units and a hydraulic module, wherein the M indoor units and the hydraulic module are respectively connected with the outdoor unit, M is a positive integer, the hydraulic module comprises a first heat exchanger, a second heat exchanger, a first compressor and a switching unit, the first side of the first heat exchanger is connected with the outdoor unit, the second side of the second heat exchanger is connected with a waterway module, the first compressor and the switching unit are arranged between the second side of the first heat exchanger and the first side of the second heat exchanger, the first end of the switching unit is connected with the first heat exchanger, the second end of the switching unit is connected with a return air port of the first compressor, the third end of the switching unit is connected with the second heat exchanger, the fourth end of the switching unit is connected with an exhaust port of the first compressor, the method comprises the following steps:
acquiring the running state of the outdoor unit and/or acquiring the running state of each indoor unit;
and controlling the switching unit according to the running state of the outdoor unit and/or the running state of each indoor unit so as to switch the running mode of the hydraulic module.
2. The method of claim 1, wherein the controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit comprises:
and determining that at least one indoor unit is started and performs heating operation according to the operation state of each indoor unit, controlling the first compressor to be started, and controlling the switching unit to work in a first state so as to enable the hydraulic module to perform cooling operation.
3. The method of claim 2, wherein the controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit, further comprises:
and if the M indoor units are determined not to be subjected to heating operation according to the operation state of each indoor unit, controlling the first compressor and the switching unit according to a control instruction.
4. The control method of an air conditioning system according to claim 2 or 3, wherein it is further determined that the outdoor unit is activated before it is determined that at least one of the indoor units is activated and performs a heating operation according to the operation state of each indoor unit.
5. The method of claim 1, wherein the controlling the switching unit according to the operation state of the outdoor unit and the operation state of each indoor unit comprises:
and if the outdoor unit is determined to enter the defrosting mode according to the running state of the outdoor unit, the first compressor is controlled to be started, and the switching unit is controlled to work in a first state, so that the hydraulic module performs refrigerating operation.
6. The method of claim 5, wherein the controlling the switching unit according to the operation state of the outdoor unit and/or the operation state of each indoor unit, further comprises:
and if the outdoor unit is determined not to enter the defrosting mode according to the running state of the outdoor unit, controlling the first compressor and the switching unit according to a control instruction.
7. The control method of an air conditioning system according to claim 5 or 6, wherein it is further determined that the outdoor unit performs a heating operation before it is determined that the outdoor unit enters the defrosting mode according to the operation state of the outdoor unit.
8. A control device of an air conditioning system is characterized in that the air conditioning system comprises an outdoor unit, M indoor units and a hydraulic module, wherein the M indoor units and the hydraulic module are respectively connected with the outdoor unit, M is a positive integer, the hydraulic module comprises a first heat exchanger, a second heat exchanger, a first compressor and a switching unit, the first side of the first heat exchanger is connected with the outdoor unit, the second side of the second heat exchanger is connected with a waterway module, the first compressor and the switching unit are arranged between the second side of the first heat exchanger and the first side of the second heat exchanger, the first end of the switching unit is connected with the first heat exchanger, the second end of the switching unit is connected with a return air port of the first compressor, the third end of the switching unit is connected with the second heat exchanger, the fourth end of the switching unit is connected with an exhaust port of the first compressor, the device comprises:
the acquisition module is used for acquiring the running state of the outdoor unit and/or acquiring the running state of each indoor unit;
and the control module is used for controlling the switching unit according to the running state of the outdoor unit and/or the running state of each indoor unit so as to switch the running mode of the hydraulic module.
9. An air conditioning system characterized by comprising the control device of the air conditioning system according to claim 8.
10. A readable storage medium, characterized in that a control program of an air conditioning system is stored thereon, which when executed by a processor implements the control method of the air conditioning system according to any one of claims 1 to 7.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008256304A (en) * | 2007-04-06 | 2008-10-23 | Daikin Ind Ltd | Refrigerating device |
| CN204594314U (en) * | 2015-04-10 | 2015-08-26 | 广东美的暖通设备有限公司 | A kind of high energy efficiency hydraulic module |
| CN205939467U (en) * | 2016-08-19 | 2017-02-08 | 广东美的暖通设备有限公司 | Multi -split air conditioning system |
| CN207600010U (en) * | 2017-11-14 | 2018-07-10 | 科林贝思（深圳）科技有限公司 | The air source heat pump that a kind of wind system and water system coexist |
| CN109442752A (en) * | 2018-11-26 | 2019-03-08 | 江苏天舒电器有限公司 | A kind of superposition type hot-air system |
| CN109612098A (en) * | 2018-12-21 | 2019-04-12 | 广东志高暖通设备股份有限公司 | It is a kind of can dynamic regulation water temperature hydraulic module system and control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520166A (en) * | 2018-12-19 | 2019-03-26 | 春意环境科技有限公司 | A kind of temperature air-source heat pump suitable for ultra-low temperature surroundings |
| CN209588445U (en) * | 2019-03-04 | 2019-11-05 | 珠海格力电器股份有限公司 | Heat pump system and heat pump drying device |
-
2020
- 2020-05-18 CN CN202010420302.XA patent/CN111595002B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008256304A (en) * | 2007-04-06 | 2008-10-23 | Daikin Ind Ltd | Refrigerating device |
| CN204594314U (en) * | 2015-04-10 | 2015-08-26 | 广东美的暖通设备有限公司 | A kind of high energy efficiency hydraulic module |
| CN205939467U (en) * | 2016-08-19 | 2017-02-08 | 广东美的暖通设备有限公司 | Multi -split air conditioning system |
| CN207600010U (en) * | 2017-11-14 | 2018-07-10 | 科林贝思（深圳）科技有限公司 | The air source heat pump that a kind of wind system and water system coexist |
| CN109442752A (en) * | 2018-11-26 | 2019-03-08 | 江苏天舒电器有限公司 | A kind of superposition type hot-air system |
| CN109612098A (en) * | 2018-12-21 | 2019-04-12 | 广东志高暖通设备股份有限公司 | It is a kind of can dynamic regulation water temperature hydraulic module system and control method |
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