CN109916044B - Mode switching control method and air conditioning system - Google Patents
Mode switching control method and air conditioning system Download PDFInfo
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- CN109916044B CN109916044B CN201910107161.3A CN201910107161A CN109916044B CN 109916044 B CN109916044 B CN 109916044B CN 201910107161 A CN201910107161 A CN 201910107161A CN 109916044 B CN109916044 B CN 109916044B
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Abstract
The invention discloses a mode switching control method and an air conditioning system. The air conditioning system comprises a plurality of indoor units, and the mode switching control method comprises the following steps: when a control instruction for switching the operation modes of a plurality of indoor units is received, determining the number of the indoor units needing to be switched to the operation modes; determining the switching times and the number of indoor units switched each time according to the number of the indoor units needing to switch the operation mode; and controlling the plurality of indoor units to switch the operation mode according to the switching times and the number of the indoor units switched each time. When the operation modes of a plurality of indoor units are switched simultaneously, the air conditioning system can switch the number of the indoor units of the operation modes step by step according to the needs, on one hand, the noise level rise generated by superposition of multiple sound sources can be effectively reduced, on the other hand, the noise level of switching a single sound source after the operation modes are switched can be attenuated due to the pressure equalizing effect during each switching, and the control of the maximum noise level during the operation mode switching is favorably ensured.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to a mode switching control method and an air conditioning system.
Background
In the related art, with the development of the multi-split air-conditioning technology, a multi-split air-conditioning product as an energy-saving and efficient air-conditioning system will be more and more popular. At present, the switching of the multi-split air conditioning system between different operation modes can be realized by adopting an electromagnetic valve as a main control means, and when different operation modes are switched, in the moment of high-pressure and low-pressure conduction, because the high-pressure and low-pressure difference is large and the pressure equalizing time is long, large noise is often generated and the pressure equalizing time lasts for a long time, so that the user experience is influenced.
Disclosure of Invention
The embodiment of the invention provides a mode switching control method and an air conditioning system.
The mode switching control method is used for an air conditioning system, the air conditioning system comprises a plurality of indoor units, and the mode switching control method comprises the following steps:
when a control instruction for switching the operation modes of a plurality of indoor units is received, determining the number of the indoor units needing to be switched to the operation modes;
determining the switching times and the number of the indoor units switched each time according to the number of the indoor units needing to switch the operation modes; and
and controlling a plurality of indoor units to switch the operation modes according to the switching times and the number of the indoor units switched each time.
In the mode switching control method, when the operation modes of a plurality of indoor units are switched simultaneously, the air conditioning system can switch the number of the indoor units of the operation modes step by step according to the needs, so that on one hand, the rise of the noise level generated by superposition of multiple sound sources can be effectively reduced, on the other hand, the noise level of switching a single sound source after the operation modes are switched can be attenuated due to the pressure equalizing effect during each switching, and the control of the maximum noise level during the operation mode switching can be favorably ensured.
In some embodiments, when the number of times of switching is two or more, it is determined that the number of indoor units switched at the previous time is smaller than the number of indoor units switched at the subsequent time.
In some embodiments, when the number of times of switching is three or more, the time interval between two adjacent times of switching is the same.
In some embodiments, the air conditioning system includes a control valve, and the step of controlling a plurality of indoor units to switch the operation mode according to the switching times and the number of the indoor units per switching includes: and controlling the opening or closing of the control valve to control the indoor unit to switch the operation mode.
In some embodiments, the control valve includes a solenoid valve connected to the indoor unit, the operation modes include a cooling mode and a heating mode, and the controlling of the control valve to be opened or closed to control the indoor unit to switch the operation modes includes: and controlling the electromagnetic valve to be switched from closed to open so as to switch the running mode of the indoor unit from the heating mode to the cooling mode.
In some embodiments, the control valve includes a first solenoid valve and a second solenoid valve connected to the indoor unit, the operation modes include a cooling mode and a heating mode, and the controlling of the control valve to be opened or closed to control the indoor unit to switch the operation modes includes: and controlling the first electromagnetic valve to be switched from open to closed, and controlling the second electromagnetic valve to be opened so as to switch the operation mode of the indoor unit from the cooling mode to the heating mode.
In some embodiments, the step of determining the number of switching times and the number of indoor units per switching according to the number of indoor units requiring switching of the operation mode includes: and determining the number of the indoor units switched each time according to the noise level of the switched operation mode and the number of the indoor units needing to be switched, wherein the noise level is related to the number of the indoor units switched at the same time.
The air conditioning system comprises a control device and a plurality of indoor units, wherein the control device is used for determining the number of the indoor units needing to be switched into the operation modes when receiving a control instruction of switching the operation modes of the indoor units, determining the switching times and the number of the indoor units switched each time according to the number of the indoor units needing to be switched into the operation modes, and controlling the indoor units to be switched into the operation modes according to the switching times and the number of the indoor units switched each time.
In the air conditioning system of the above embodiment, when the plurality of indoor units switch the operation mode simultaneously, the air conditioning system may switch the number of the indoor units of the operation mode step by step according to the need, on one hand, the noise level increase caused by superposition of multiple sound sources may be effectively reduced, on the other hand, the noise level for switching a single sound source after switching the operation mode may be attenuated due to the pressure equalizing function in each switching, which is beneficial to ensuring the control of the maximum noise level when switching the operation mode.
In some embodiments, when the number of times of switching is two or more, it is determined that the number of indoor units switched at the previous time is smaller than the number of indoor units switched at the subsequent time.
In some embodiments, when the number of times of switching is three or more, the time interval between two adjacent times of switching is the same.
In some embodiments, the air conditioning system includes a control valve, and the control device is configured to control the control valve to open or close to control the indoor unit to switch the operation mode.
In some embodiments, the control valve includes a solenoid valve connected to the indoor unit, the operation modes include a cooling mode and a heating mode, and the control device is configured to control the solenoid valve to be switched from closed to open so as to switch the operation mode of the indoor unit from the heating mode to the cooling mode.
In some embodiments, the control valve includes a first solenoid valve and a second solenoid valve connected to an indoor unit, the operation mode includes a cooling mode and a heating mode, and the control device is configured to control the first solenoid valve to be switched from open to closed and control the second solenoid valve to be switched on so that the operation mode of the indoor unit is switched from the cooling mode to the heating mode.
In some embodiments, the control device is configured to determine the number of indoor units per switching according to a noise level of switching operation modes and the number of indoor units needing to switch operation modes, where the noise level is related to the number of indoor units switched at the same time.
An air conditioning system according to an embodiment of the present invention includes a plurality of indoor units, a processor, and a memory, where the memory stores a mode switching control program that is executed by the processor to implement the steps of the mode switching control method according to any one of the above embodiments.
In the air conditioning system of the above embodiment, when the plurality of indoor units switch the operation modes simultaneously, the processor may execute the mode switching control program, and the air conditioning system may switch the number of the indoor units of the operation modes step by step according to the needs, so that on one hand, the rise of the noise level generated by overlapping of multiple sound sources may be effectively reduced, and on the other hand, the noise level of switching a single sound source after switching the operation modes may be attenuated due to the pressure equalizing effect at each time of switching, which is beneficial to ensuring the control of the maximum noise level when switching the operation modes.
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 above 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 configuration diagram of an air conditioning system according to an embodiment of the present invention.
Fig. 2 is a block schematic diagram of an air conditioning system according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating a mode switching control method according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of noise levels of an indoor unit switching operation mode according to an embodiment of the present invention.
Fig. 5 is another schematic configuration diagram of an air conditioning system according to an embodiment of the present invention.
Fig. 6 is another block schematic diagram of an air conditioning system according to an embodiment of the present invention.
Description of the main element symbols:
the air conditioning system 10, the compressor 11, the outdoor unit 12, the control device 13, the indoor unit 14, the oil return device 15, the control valve 16, the first solenoid valve 162, the second solenoid valve 164, the four-way valve 17, the processor 18, and the memory 19.
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 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
Referring to fig. 1 to 3, an air conditioning system 10 according to an embodiment of the present invention includes a compressor 11, an outdoor unit 12, a control device 13, and a plurality of indoor units 14, wherein the control device 13 is connected to the plurality of indoor units 14 and is configured to control the indoor units 14 to switch an operation mode. The mode switching control method according to the embodiment of the present invention may be applied to the air conditioning system 10 according to the embodiment of the present invention, that is, the air conditioning system 10 according to the embodiment of the present invention may switch the operation modes of the plurality of indoor units 14 by the mode switching control method according to the embodiment of the present invention.
Specifically, the mode switching control method includes:
step S1, when receiving a control command for switching the operation mode of a plurality of indoor units 14, determining the number of indoor units 14 whose operation modes need to be switched;
step S2, determining the number of times of switching and the number of indoor units 14 to be switched each time according to the number of indoor units 14 whose operation modes need to be switched; and
in step S3, the operation mode of the plurality of indoor units 14 is switched according to the number of times of switching and the number of indoor units 14 to be switched at each time.
When the mode switching control method is applied to the air conditioning system 10, the steps S1, S2 and S3 may be implemented by the control device 13, that is, the control device 13 may be configured to determine the number of indoor units 14 requiring switching of the operation modes when the air conditioning system 10 receives a control command for switching the operation modes of the plurality of indoor units 14, determine the number of times of switching and the number of indoor units 14 per switching according to the number of indoor units 14 requiring switching of the operation modes, and control the plurality of indoor units 14 to switch the operation modes according to the number of times of switching and the number of indoor units 14 per switching.
Specifically, the air conditioning system 10 is a multi-split air conditioning system, the air conditioning system 10 includes one or more outdoor units 12, and the number of the outdoor units 12 is 2 in the illustrated embodiment. The air conditioning system 10 can achieve cooling and heating requirements for a plurality of indoor units 14 through 2 outdoor units 12, and can be applied to different environments, such as large-scale venues, machine rooms, office spaces, and the like.
It can be understood that when the air conditioning system 10 receives a plurality of indoor units 14 to switch the operation mode, the plurality of indoor units 14 are switched at the same time, so that the high voltage and the low voltage are conducted instantaneously, and due to the large pressure difference between the high voltage and the low voltage and the long pressure equalizing time, the noise is often generated and lasts for a long time.
In certain embodiments, the operating modes of the air conditioning system 10 include a cooling mode, a heating mode, an oil return mode, and a defrost mode.
The air conditioning system 10 includes an oil return device 15, and the oil return device 15 is configured to separate the lubricant oil discharged from the compressor 11 along with the refrigerant gas and provide the separated lubricant oil to the compressor 11, so as to prevent the compressor 11 from being damaged due to oil shortage. However, the oil return device 15 cannot completely separate the lubricating oil in the refrigerant gas, and a small amount of lubricating oil still enters the condenser, the evaporator and the corresponding pipelines along with the refrigerant, and for the multi-split air conditioning system, because the system pipelines are long, the fall is large, the number of elbows is large, and the system has more oil storage places, the compressor 11 is easy to lack oil when the multi-split air conditioning system runs for a long time.
The multi-split air conditioning system needs to be switched to the oil return mode when the amount of lubricant oil of the compressor 11 is small, or to the oil return mode every predetermined time period, in order to recover the lubricant oil remaining in the condenser, the evaporator and the corresponding pipes. Therefore, when the air conditioning system 10 is switched to the oil return mode, it is generally necessary to simultaneously switch the operation modes of the plurality of indoor units 14.
In addition, when the air conditioning system 10 operates in the heating mode in a low-temperature environment, the refrigerant absorbs heat in the outdoor unit 12, so that the temperature of the outdoor unit 12 is further lowered, which easily causes frost condensation in the outdoor unit 12 and affects the operation of the air conditioning system 10. Therefore, the air conditioning system 10 needs to switch to the defrosting mode when the temperature of the outdoor unit 12 is low, or switch to the defrosting mode at preset intervals, so as to defrost the outdoor unit 12 and ensure the normal operation of the air conditioning system 10. Similarly, when the air conditioning system 10 is switched to the defrosting mode, it is generally necessary to simultaneously switch the operation modes of the plurality of indoor units 14.
Of course, in other embodiments, the air conditioning system 10 may switch the operation mode from the cooling mode to the heating mode, and from the heating mode to the cooling mode.
Thus, in the above mode air conditioning system 10 and the switching control method, when the plurality of indoor units 14 switch the operation mode simultaneously, the air conditioning system 10 can switch the number of the indoor units 14 of the operation mode step by step according to the requirement, on one hand, the noise level increase generated by overlapping of multiple sound sources can be effectively reduced, on the other hand, the noise level of switching a single sound source after switching the operation mode will be attenuated due to the pressure equalizing effect during each switching, which is beneficial to ensuring the control of the maximum noise level during switching the operation mode.
Specifically, in step S2, the number of indoor units 14 whose operation modes need to be switched may be n, the number of switching times may be m, and the number of indoor units 14 that are switched i-th time may be niWherein n is more than or equal to 2, m is more than or equal to 2 and less than or equal to n, i is more than or equal to 1 and less than or equal to m, and n is ∑ niAnd n, m and i are positive integers.
In some embodiments, step S2 may determine the number of switching times according to the number of indoor units 14 requiring switching of the operation mode, and then determine the number of indoor units 14 required to switch the operation mode each time according to the number of indoor units 14 requiring switching of the operation mode and the number of switching times.
In this way, the control device 13 may be preset with the number of switching times corresponding to the range of the number of indoor units 14 that need to be switched, and may determine the number of switching times when the number of indoor units 14 that need to be switched is within the corresponding range. For example, when the number of indoor units 14 to be switched is in the range of 2 to 4, the corresponding switching times are 2 times; when the number of indoor units 14 to be switched is in the range of 5 to 8, the corresponding number of times of switching is 3. The number of indoor units 14 per switch is then determined.
In some embodiments, step S2 may determine the number of indoor units 14 to be switched each time, and then determine the number of switching times according to the number of indoor units 14 that need to be switched.
Specifically, the control device 13 is preset with the maximum number of indoor units 14 to be switched at a time. For example, the maximum number of the first switching is 1, the maximum number of the second switching is 3, and the maximum number of the third switching is 5, the indoor unit 14 to be switched is allocated to each switching, and when the number of the indoor units 14 allocated to the previous switching reaches the maximum number, the indoor unit 14 to be switched is allocated to the next switching. In this way, when the number of indoor units 14 to be switched is 7, the number of indoor units 14 to be switched for the first time may be 1, the number of indoor units 14 to be switched for the second time may be 3, and the number of indoor units 14 to be switched for the third time may be 3.
It should be noted that the number of indoor units 14 switched at a time is not limited to the above-discussed embodiments, and may be flexibly configured according to actual situations. The number of indoor units 14 per switch may be the same or different.
In certain embodiments, step S2 includes: the number of indoor units 14 to be switched at a time is determined according to the noise level of the switching operation mode and the number of indoor units 14 to be switched, and the noise level is related to the number of indoor units 14 to be switched at the same time.
For the air conditioning system 10, the control device 13 may be configured to determine the number of indoor units 14 switched at each time according to the noise level of the switching operation mode and the number of indoor units 14 required to switch the operation mode, wherein the noise level is related to the number of indoor units 14 switched at the same time.
It can be understood that the noise level of the switching noise generated when the air conditioning system 10 switches the operation mode is related to the pressure difference between the high pressure side and the low pressure side of the air conditioning system 10, and the noise level is also related to the density of the refrigerant, and the amount of the refrigerant directly affects the time required for the pressure change and the duration of the switching noise during the switching process. When the operation modes of the plurality of indoor units 14 are simultaneously switched, there is a case where the noise level is increased by simultaneously switching the noise composite superposition of the plurality of indoor units 14.
In this way, when the operation modes of the plurality of indoor units 14 are switched in a plurality of times, considering the influence of noise on the sleep or work of the user, the number of the indoor units 14 switched at each time can be determined by combining the noise level, which is beneficial to ensuring the control of the air conditioning system 10 on the maximum noise level of the switched operation mode.
In the embodiment shown in fig. 4, the noise level at which the air conditioning system 10 generates switching noise is related to the noise level of a single sound source and the number of sound sources. Specifically, when the noise level of a single sound source is determined, the noise level at which the air conditioning system 10 generates switching noise is exponential to the number of sound sources.
In some embodiments, the determination is made when the number of handovers is two or moreThe number of the indoor units 14 switched at the previous time is smaller than the number of the indoor units 14 switched at the subsequent time, that is, ni＜n(i-1)。
For the air conditioning system 10, the control device 13 may be configured to determine that the number of indoor units 14 switched at the previous time is smaller than the number of indoor units 14 switched at the subsequent time when the number of switching times is two or more.
Thus, the number of indoor units 14 switched each time is gradually increased, the pressure difference between the high-pressure side and the low-pressure side at the next time is reduced due to the pressure equalizing effect, and the noise level of a single sound source is gradually reduced under the action of multiple times, so that the maximum noise level of multiple sound sources in the switching process and the duration of switching noise are controlled.
In some embodiments, when the number of times of switching is three or more, the time interval between two adjacent times of switching is the same.
It will be appreciated that there is a time interval between two adjacent handovers so that the air conditioning system 10 can achieve a stable uniform effect on the previous handover. Thus, the time interval between two adjacent switching times is the same, and the switching of the air conditioning system 10 has a certain rule. In one example, the time interval between two adjacent switching times is 0.5-2 seconds, preferably, the time interval between two adjacent switching times is 1 second, and the air conditioning system 10 has a certain uniform time when switching the operation mode, and at the same time, it can avoid the noise duration being too long due to too long time interval.
Of course, in other embodiments, the time interval between two adjacent handovers may not be the same.
In certain embodiments, the air conditioning system 10 includes the control valve 16, and step S2 includes: the control valve 16 is controlled to open or close to control the indoor unit 14 to switch the operation mode.
For the air conditioning system 10, the control device 13 may be configured to control the control valve 16 to open or close to control the indoor unit 14 to switch the operation mode.
That is, the air conditioning system 10 may control the operation mode of the air conditioning system 10 by controlling the flow direction of the refrigerant through the control valve 16, so that the air conditioning system 10 may perform different functions, such as cooling, heating, oil return, defrosting, and the like.
In some embodiments, the air conditioning system 10 includes a four-way valve 17 connecting the compressor 11, the indoor unit 14, and the outdoor unit 12. The control device 13 may control a flow direction of the refrigerant discharged from the compressor 11 by the four-way valve 17 to implement different functions of the air conditioning system 10.
Referring to fig. 1 again, in an example, the control device 13 may control the high-pressure refrigerant discharged from the compressor 11 to flow to the outdoor unit 12 for heat dissipation and condensation through the four-way valve 17, and then flow to the indoor unit 14 for evaporation and heat absorption, so as to cool the indoor unit 14, and finally the low-pressure refrigerant returns to the compressor 11 to form a circulation loop.
Referring to fig. 5, in another example, the control device 13 may control the high-pressure refrigerant discharged from the compressor 11 to flow to the indoor unit 14 for heat dissipation and condensation through the four-way valve 17, so as to achieve heating of the indoor unit 14, then the refrigerant flows to the outdoor unit 12 for evaporation and heat absorption, and finally the low-pressure refrigerant returns to the compressor 11 to form a circulation loop.
In some embodiments, the control valve 16 includes a first solenoid valve 162 and a second solenoid valve 164 connected to the indoor unit 14. When the air conditioning system 10 is in the cooling mode, the first solenoid valve 162 may be opened such that the low-pressure refrigerant flowing out of the indoor unit 14 may return to the compressor 11 through the first solenoid valve 162. When the air conditioning system 10 is in the heating mode, the second solenoid valve 164 may be opened such that the high-pressure refrigerant discharged from the compressor 11 may enter the indoor unit 14 through the second solenoid valve 164.
Specifically, the first and second solenoid valves 162, 164 may only be conducted in a forward direction and not in a reverse direction, i.e., the first and second solenoid valves 162, 164 may be check valves. The control device 13 may control opening or closing of the first solenoid valve 162 and/or the second solenoid valve 164 by an electric signal. The control device 13 may control the first solenoid valve 162 and the second solenoid valve 164 to be opened, so that the first solenoid valve 162 and the second solenoid valve 164 may be conducted in the forward direction, and control the first solenoid valve 162 and the second solenoid valve 164 to be closed, so that the first solenoid valve 162 and the second solenoid valve 164 may not be conducted in the forward direction. Here, a direction in which the refrigerant flows out of the indoor unit through the first solenoid valve 162 is a forward direction of the first solenoid valve 162, and a direction in which the refrigerant flows into the indoor unit 14 through the second solenoid valve 164 is a forward direction of the second solenoid valve 164.
Further, the first solenoid valve 162 and the second solenoid valve 164 are connected to the same end of the indoor unit 14, so that when the air conditioning system 10 is in the heating mode, the second solenoid valve 164 is opened, and the first solenoid valve 162 is closed, thereby preventing the refrigerant flowing through the second solenoid valve 164 from directly returning to the compressor 11 from the first solenoid valve 162 to cause the high-pressure refrigerant to impact the compressor 11.
Of course, in other embodiments, the control valve 16 may not be limited to a solenoid valve, but may adopt other electric elements that are turned on or off by an electric signal according to needs to control the transmission direction of the refrigerant, and is not limited in this respect.
In some embodiments, the number of the first solenoid valves 162 and the second solenoid valves 164 may be plural, and the plural first solenoid valves 162, the plural second solenoid valves 164, and the plural indoor units 14 correspond to one another.
In this way, the control device 13 can control the first solenoid valve 162 and the second solenoid valve 164 corresponding to different indoor units 14 to switch the operation modes of the different indoor units 14.
In some embodiments, the step of controlling the control valve 16 to open or close to control the indoor unit 14 to switch the operation mode includes: the first solenoid valve 162 is controlled to be switched from off to on to switch the operation mode of the indoor unit 14 from the heating mode to the cooling mode.
For the air conditioning system 10, the control device 13 may be configured to control the first electromagnetic valve 162 to be switched from closed to open so as to switch the operation mode of the indoor unit 14 from the heating mode to the cooling mode.
It is understood that when the indoor unit 14 is in the heating mode, the first solenoid valve 162 is closed, and the second solenoid valve 164 is opened. When the indoor unit 14 is in the cooling mode, the first solenoid valve 162 is opened, and the second solenoid valve 164 may be opened or closed. Therefore, when the operation mode of the indoor unit 14 is switched from the heating mode to the cooling mode, the first solenoid valve 162 may be switched from off to on. After the switch, the second solenoid 164 may remain open or switch from open to closed because the second solenoid 164 cannot be reverse-conducting.
In some embodiments, the step of controlling the control valve 16 to open or close to control the indoor unit 14 to switch the operation mode includes: the first solenoid valve 162 is controlled to be switched from open to closed, and the second solenoid valve 164 is controlled to be opened to switch the operation mode of the indoor unit 14 from the cooling mode to the heating mode.
For the air conditioning system 10, the control device 13 may be configured to control the first solenoid valve 162 to be switched from open to closed, and control the second solenoid valve 164 to be opened so as to switch the operation mode of the indoor unit 14 from the cooling mode to the heating mode. Accordingly, when the operation mode of the indoor unit 14 is switched from the cooling mode to the heating mode, the second solenoid valve 164 may be controlled to be kept open or switched from closed to open by switching the first solenoid valve 162 from open to closed.
Generally, when the external environment is low and the indoor unit 14 operates in the heating mode, the defrosting problem of the air conditioning system 10 needs to be considered, in order to remove the frost from the outdoor unit 12, the heat release of the refrigerant in the outdoor unit 12 can be controlled, and the defrosting mode can be similar to the cooling mode of the indoor unit 14, that is, when the air conditioning system 10 is switched to the defrosting mode, the switching manner of the indoor unit 14 can be similar to the switching manner of the indoor unit 14 from the heating mode to the cooling mode.
The number of indoor units 14 to be switched may be the sum of the number of indoor units 14 to be switched to the heating mode, the defrosting mode, and the oil return mode. That is, the operation mode of the air conditioning system 10 for switching the indoor units 14 may be that a part of the indoor units 14 is switched to the cooling mode, a part of the indoor units 14 is switched to the heating mode, a part of the indoor units 14 is switched to the oil return mode, and/or a part of the indoor units 14 is switched to the defrosting mode. When the operation modes of the indoor units 14 need to be switched to enable the high-voltage sides and the low-voltage sides of the indoor units 14 to be conducted, the air conditioning system 10 can switch the indoor units 14 in a sub-station-by-station manner by using the mode switching control method of the embodiment of the invention, so that the noise level of the multiple indoor units 14 which are compositely overlapped in switching the operation modes is reduced, and the user experience is improved.
Referring to fig. 6, an air conditioning system 10 according to an embodiment of the present invention includes a plurality of indoor units 14, a processor 18, and a memory 19, where the memory 19 stores a mode switching control program, and the mode switching control program is executed by the processor 18 to implement the steps of the mode switching control method according to any one of the above embodiments.
In one example, the mode switch control program is executed by the processor 18 to implement the steps of:
step S1, when the air conditioning system 10 receives a control instruction for switching the operation modes of the plurality of indoor units 14, determining the number of indoor units 14 whose operation modes need to be switched;
step S2, determining the number of times of switching and the number of indoor units 14 to be switched each time according to the number of indoor units 14 whose operation modes need to be switched; and
in step S3, the operation mode of the plurality of indoor units 14 is switched according to the number of times of switching and the number of indoor units 14 to be switched at each time.
In the air conditioning system 10 of the above embodiment, when the plurality of indoor units 14 switch the operation modes at the same time, the processor 18 may execute a mode switching control program, and the air conditioning system 10 may switch the number of the indoor units 14 of the operation modes step by step according to the need, so that on one hand, the noise level increase caused by the superposition of multiple sound sources may be effectively reduced, and on the other hand, the noise level for switching the operation modes and then switching a single sound source may be attenuated due to the pressure equalizing function during each switching, which is beneficial to ensuring the control of the maximum noise level when the operation modes are switched.
Fig. 2 and 5 are schematic views showing the connection between one outdoor unit 12 and one indoor unit 14, and it can be understood that when the air conditioning system 10 includes a plurality of indoor units 14, the plurality of indoor units 14 can be connected to the outdoor unit 12 in parallel.
In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like 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, schematic representations of the above terms do not necessarily 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.
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 specific logical functions or steps of the 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, such as 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, processing module-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 embodiments 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. For example, 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 in the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. A mode switching control method is used for an air conditioning system, the air conditioning system comprises a plurality of indoor units, and the mode switching control method is characterized by comprising the following steps:
when a control instruction for switching the operation modes of a plurality of indoor units is received, determining the number of the indoor units needing to be switched to the operation modes;
determining the switching times and the number of the indoor units switched each time according to the number of the indoor units needing to switch the operation modes; and
controlling a plurality of indoor units to switch the operation mode according to the switching times and the number of the indoor units switched each time;
the step of determining the number of switching times and the number of indoor units switched each time according to the number of indoor units required to switch the operation mode comprises the following steps:
and determining the number of the indoor units switched each time according to the noise level of the switched operation mode and the number of the indoor units needing to be switched, wherein the noise level is related to the number of the indoor units switched at the same time.
2. The mode switching control method according to claim 1, wherein when the number of times of switching is two or more, the number of the indoor units switched at the previous time is smaller than the number of the indoor units switched at the subsequent time.
3. The mode switching control method according to claim 1, wherein when the number of times of switching is three or more, time intervals of adjacent two times of switching are the same.
4. The mode switching control method of claim 1, wherein the air conditioning system includes a control valve, and the step of controlling the plurality of indoor units to switch the operation mode according to the switching times and the number of the indoor units per switching includes:
and controlling the opening or closing of the control valve to control the indoor unit to switch the operation mode.
5. The mode switching control method of claim 4, wherein the control valve includes a solenoid valve connected to the indoor unit, the operation modes include a cooling mode and a heating mode, and the controlling of the control valve to be opened or closed to control the indoor unit to switch the operation modes includes:
and controlling the electromagnetic valve to be switched from closed to open so as to switch the running mode of the indoor unit from the heating mode to the cooling mode.
6. The mode switching control method of claim 4, wherein the control valve includes a first solenoid valve and a second solenoid valve connected to the indoor unit, the operation modes include a cooling mode and a heating mode, and the controlling of the control valve to be opened or closed to control the indoor unit to switch the operation modes comprises:
and controlling the first electromagnetic valve to be switched from open to closed, and controlling the second electromagnetic valve to be opened so as to switch the operation mode of the indoor unit from the cooling mode to the heating mode.
7. An air conditioning system is characterized by comprising a control device and a plurality of indoor units, wherein the control device is used for determining the number of the indoor units needing to be switched into operation modes when receiving a control instruction of switching the operation modes of the plurality of indoor units, determining the number of switching times and the number of the indoor units switched each time according to the number of the indoor units needing to be switched into operation modes, and controlling the plurality of indoor units to be switched into operation modes according to the number of switching times and the number of the indoor units switched each time;
the control device is used for determining the number of the indoor units switched each time according to the noise level of the switched operation mode and the number of the indoor units needing to be switched, wherein the noise level is related to the number of the indoor units switched at the same time.
8. The air conditioning system according to claim 7, wherein when the number of times of switching is two or more, the number of indoor units switched at the previous time is smaller than the number of indoor units switched at the subsequent time.
9. The air conditioning system as claimed in claim 7, wherein when the number of switching times is three or more, the time interval between two adjacent switching times is the same.
10. The air conditioning system as claimed in claim 7, wherein the air conditioning system includes a control valve, and the control means is configured to control the control valve to be opened or closed to control the indoor unit to switch the operation mode.
11. The air conditioning system as claimed in claim 10, wherein the control valve includes a solenoid valve connected to the indoor unit, the operation mode includes a cooling mode and a heating mode, and the control means is configured to control the solenoid valve to be switched from off to on to switch the operation mode of the indoor unit from the heating mode to the cooling mode.
12. The air conditioning system as claimed in claim 10, wherein the control valve includes a first solenoid valve and a second solenoid valve connected to the indoor unit, the operation mode includes a cooling mode and a heating mode, and the control means is configured to control the first solenoid valve to be switched from on to off and the second solenoid valve to be switched on to switch the operation mode of the indoor unit from the cooling mode to the heating mode.
13. An air conditioning system comprising a plurality of indoor units, a processor, and a memory, the memory storing a mode switching control program, the mode switching control program being executed by the processor to implement the mode switching control method according to any one of claims 1 to 6.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080097263A (en) * | 2007-05-01 | 2008-11-05 | 삼성전자주식회사 | Multi air conditioner and control method thereof |
| CN105571082A (en) * | 2016-02-22 | 2016-05-11 | 广东美的暖通设备有限公司 | Multi-split system and mode switching control method thereof |
| CN105737334A (en) * | 2016-02-22 | 2016-07-06 | 广东美的暖通设备有限公司 | Multiple on-line system and mode switching control method thereof |
| CN105864982A (en) * | 2016-04-25 | 2016-08-17 | 广东美的暖通设备有限公司 | Multi-split air conditioner system and control method thereof |
| CN106440455A (en) * | 2016-09-19 | 2017-02-22 | 广东美的暖通设备有限公司 | Multi-split system and switching control method of operating mode of indoor units thereof |
| CN107238161A (en) * | 2017-07-25 | 2017-10-10 | 广东美的暖通设备有限公司 | Multiple on-line system and its mode switch control method |
| JP2018141587A (en) * | 2017-02-28 | 2018-09-13 | ダイキン工業株式会社 | air conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101639837B1 (en) * | 2012-11-15 | 2016-07-14 | 엘지전자 주식회사 | Air conditioner |
| CN108224739B (en) * | 2017-12-01 | 2020-08-18 | 青岛海尔空调电子有限公司 | Noise control method of multi-connected air conditioning system |
-
2019
- 2019-02-02 CN CN201910107161.3A patent/CN109916044B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080097263A (en) * | 2007-05-01 | 2008-11-05 | 삼성전자주식회사 | Multi air conditioner and control method thereof |
| CN105571082A (en) * | 2016-02-22 | 2016-05-11 | 广东美的暖通设备有限公司 | Multi-split system and mode switching control method thereof |
| CN105737334A (en) * | 2016-02-22 | 2016-07-06 | 广东美的暖通设备有限公司 | Multiple on-line system and mode switching control method thereof |
| CN105864982A (en) * | 2016-04-25 | 2016-08-17 | 广东美的暖通设备有限公司 | Multi-split air conditioner system and control method thereof |
| CN106440455A (en) * | 2016-09-19 | 2017-02-22 | 广东美的暖通设备有限公司 | Multi-split system and switching control method of operating mode of indoor units thereof |
| JP2018141587A (en) * | 2017-02-28 | 2018-09-13 | ダイキン工業株式会社 | air conditioner |
| CN107238161A (en) * | 2017-07-25 | 2017-10-10 | 广东美的暖通设备有限公司 | Multiple on-line system and its mode switch control method |
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