CN112344537B - Noise reduction control method and device for indoor unit of multi-split air conditioner and multi-split air conditioner - Google Patents
Noise reduction control method and device for indoor unit of multi-split air conditioner and multi-split air conditioner Download PDFInfo
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- CN112344537B CN112344537B CN202011287750.3A CN202011287750A CN112344537B CN 112344537 B CN112344537 B CN 112344537B CN 202011287750 A CN202011287750 A CN 202011287750A CN 112344537 B CN112344537 B CN 112344537B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Abstract
The application relates to a noise reduction control method and device for an indoor unit of a multi-split air conditioner and the multi-split air conditioner, and belongs to the technical field of control of the multi-split air conditioner. The application includes: when the unit runs, determining the starting ratio of the current indoor unit and acquiring the high voltage of the current unit system; and controlling the opening of the electronic expansion valve of the indoor unit which is not operated according to the current starting ratio of the indoor unit and the current high pressure of the unit system. Through this application, help solving the problem that the electronic expansion valve of the indoor set that does not operate produced the noise under the impact of refrigerant in the multi-split air conditioner, and then help avoiding producing noise pollution to user's life, guarantee user's use is experienced.
Description
Technical Field
The application belongs to the technical field of multi-split air conditioner control, and particularly relates to a noise reduction control method and device for an indoor unit of a multi-split air conditioner and the multi-split air conditioner.
Background
For a multi-split air conditioner with one split or multiple split, not all indoor units are operated simultaneously when the multi-split air conditioner is operated, but only part of the indoor units are started to operate, and other parts of the indoor units are in a non-operating state. In the related art, when the multi-split air conditioning system operates, in order to avoid the accumulation of the refrigerant, the electronic expansion valve of the indoor unit in the non-operating state is controlled to keep a certain opening degree, so that the refrigerant participates in the circulation of the system. In this case, the electronic expansion valve of the indoor unit that is not operating may receive the impact of the refrigerant, and noise may be generated by the impact of the refrigerant. Because the indoor set is generally installed in the indoor side, is nearer to the human body, behind the indoor set noise production that does not operate, can bring noise pollution for customer's house life, produce not good influence to user's use experience, probably cause user complaint.
Disclosure of Invention
In order to overcome the problems in the related art at least to a certain extent, the application provides a noise reduction control method and device for an indoor unit of a multi-split air conditioner and the multi-split air conditioner, and the method and device are favorable for solving the problem that an electronic expansion valve of an indoor unit which does not operate in the multi-split air conditioner generates noise under the impact of a refrigerant.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect,
the application provides a noise reduction control method for an indoor unit of a multi-split air conditioner, which comprises the following steps:
when the unit runs, determining the starting ratio of the current indoor unit and acquiring the high voltage of the current unit system;
and controlling the opening of the electronic expansion valve of the indoor unit which is not operated according to the current starting ratio of the indoor unit and the current high pressure of the unit system.
Further, when the unit is running, determining the current indoor unit startup ratio and acquiring the current unit system high voltage includes:
when the unit operates, the unit operation state is detected, and when the indoor unit operates in heating mode, the current indoor unit starting rate is determined, and the current unit system high voltage is obtained.
Further, the determining the current indoor unit startup ratio includes:
according to the following formula: and determining the current indoor unit starting ratio, wherein the indoor unit starting ratio is the total indoor unit starting capacity/the total outdoor unit starting capacity.
Further, the controlling the opening of the electronic expansion valve of the indoor unit which is not operated according to the current starting ratio of the indoor unit and the current high pressure of the unit system comprises:
determining a target opening degree to which an electronic expansion valve of an indoor unit which is not operated needs to be adjusted according to the current starting ratio of the indoor unit and the current high pressure of the unit system;
and adjusting the opening of the electronic expansion valve of the indoor unit which is not operated according to the determined target opening.
Further, the adjusting the opening degree of the electronic expansion valve of the indoor unit which is not operated according to the determined target opening degree further includes:
determining the opening adjustment amount of an electronic expansion valve of an indoor unit which is not operated within each preset time length according to the current starting ratio of the indoor unit and the current high pressure of the unit system;
and according to the determined opening adjustment amount in each preset time, carrying out opening increasing adjustment on the electronic expansion valve of the indoor unit which is not in operation.
Further, the determining a target opening degree to which an electronic expansion valve of an indoor unit that is not in operation needs to be adjusted according to the current starting ratio of the indoor unit and the current high pressure of the unit system includes:
determining a target combination condition met by the current starting ratio of the indoor unit and the high voltage of the current unit system according to a preset combination condition of the starting ratio of the indoor unit and the high voltage of the unit system under different conditions;
and determining the target opening degree to which the electronic expansion valve of the indoor unit which is not operated needs to be adjusted under the target combination condition according to the corresponding relation between each combination condition and the target opening degree.
Further, the determining an opening adjustment amount of an electronic expansion valve of an indoor unit which is not operated within each preset time period according to the current starting ratio of the indoor unit and the current high pressure of the unit system comprises:
and determining the opening degree adjustment quantity of the electronic expansion valve of the indoor unit which is not operated in the target combination condition in each preset time according to the corresponding relation between each combination condition and the opening degree adjustment quantity in each preset time.
Further, the method further comprises:
and after the electronic expansion valve of the indoor unit which is not operated is adjusted to the target opening degree to be adjusted, controlling the electronic expansion valve of the indoor unit which is not operated to maintain the opening degree unchanged.
Further, the controlling an electronic expansion valve of an indoor unit that is not in operation according to the current indoor unit startup ratio and the current unit system high pressure specifically includes:
if the starting ratio a of the current indoor unit is more than or equal to a set value A and the high pressure B of the current unit system is more than or equal to a set value B, controlling the electronic expansion valve of the indoor unit which does not operate to increase delta C1 within every preset X seconds until the opening of the electronic expansion valve of the indoor unit which does not operate is increased to C1;
if the starting ratio a of the current indoor unit is less than the set value A and the high pressure B of the current unit system is more than or equal to the set value B, controlling the electronic expansion valve of the indoor unit which does not operate to increase delta C2 within every preset X seconds until the opening of the electronic expansion valve of the indoor unit which does not operate is increased to C2;
and if the starting ratio a of the current indoor unit is more than or equal to a set value A and the high pressure B of the current unit system is less than a set value B, controlling the electronic expansion valve of the indoor unit which does not operate to increase delta C3 within every preset X seconds until the opening of the electronic expansion valve of the indoor unit which does not operate is increased to C3.
Further, the controlling the opening of the electronic expansion valve of the indoor unit which is not operated according to the current starting ratio of the indoor unit and the current high pressure of the unit system further specifically comprises:
and if the starting ratio a of the current indoor unit is less than the set value A and the high pressure B of the current unit system is less than the set value B, maintaining the current opening degree of the electronic expansion valve of the indoor unit which is not operated.
In a second aspect of the present invention,
the application provides a controlling means that makes an uproar falls in multi-split air conditioning indoor set, the device includes:
the determining and obtaining module is used for determining the current starting rate of the indoor unit when the unit runs and obtaining the current high voltage of the unit system;
and the control module is used for controlling the opening of the electronic expansion valve of the indoor unit which does not operate according to the current starting ratio of the indoor unit and the current high pressure of the unit system.
In a third aspect,
the application provides a multi-split air conditioner, includes:
one or more memories having executable programs stored thereon;
one or more processors configured to execute the executable program in the memory to implement the steps of any of the methods described above.
This application adopts above technical scheme, possesses following beneficial effect at least:
according to the method and the device, when the multi-split air conditioner operates, the current starting ratio of the indoor unit is determined, the current unit system high pressure is obtained, then the electronic expansion valve of the indoor unit which does not operate is controlled according to the current starting ratio of the indoor unit and the current unit system high pressure, the problem that the electronic expansion valve of the indoor unit which does not operate in the multi-split air conditioner generates noise under the impact of a refrigerant is solved, noise pollution to the life of a user is avoided, and the use experience of the user is guaranteed.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a noise reduction control method for an indoor unit of a multi-split air conditioner according to an exemplary embodiment;
fig. 2 is a schematic structural diagram illustrating a noise reduction control device of an indoor unit of a multi-split air conditioner according to an exemplary embodiment;
fig. 3 is a schematic structural view illustrating a multi-split air conditioner according to an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart illustrating a noise reduction control method for a multi-split air conditioner indoor unit according to an exemplary embodiment, and as shown in fig. 1, the noise reduction control method for the multi-split air conditioner indoor unit includes the following steps:
step S101, when the unit runs, determining the starting ratio of the current indoor unit, and acquiring the system high voltage of the current unit;
and S102, controlling the opening of the electronic expansion valve of the indoor unit which is not operated according to the current starting ratio of the indoor unit and the current high pressure of the unit system.
Specifically, the multi-split air conditioner may be a multi-split air conditioner with one split or multiple split, and when the multi-split air conditioner is operated, not all indoor units may be operated simultaneously, only some indoor units may be operated while other indoor units are in an inoperative state. When the multi-split air conditioning system operates, in order to avoid the accumulation of the refrigerant, the electronic expansion valve of the indoor unit in the non-operation state is controlled to keep a certain opening degree, so that the refrigerant participates in the circulation of the system. In this case, the electronic expansion valve of the indoor unit that is not operating may receive the impact of the refrigerant, and noise may be generated by the impact of the refrigerant. Because the indoor set is generally installed in the indoor side, is nearer to the human body, behind the indoor set noise production that does not operate, can bring noise pollution for customer's house life, produce not good influence to user's use experience, probably cause user complaint.
Therefore, according to the scheme, when the operation of the multi-split air conditioner is detected, the current starting ratio of the indoor unit is determined, the current unit system high pressure is obtained, and then the electronic expansion valve of the indoor unit which does not operate is controlled according to the current starting ratio of the indoor unit and the current unit system high pressure, so that the problem that the electronic expansion valve of the indoor unit which does not operate in the multi-split air conditioner generates noise under the impact of a refrigerant is solved, the noise pollution to the life of a user is avoided, and the use experience of the user is guaranteed.
For the high pressure of the unit system, the high pressure can be obtained by detecting the pressure of the high-temperature refrigerant supplied from the outlet of the compressor.
In an embodiment, for step S101, determining the current indoor unit startup ratio may include:
according to the following formula: and determining the current indoor unit starting ratio, wherein the indoor unit starting ratio is the total indoor unit starting capacity/the total outdoor unit starting capacity.
Specifically, during the operation of the multi-split air conditioner, it is possible to: some indoor units are in operation states, such as heating, refrigerating, dehumidifying, air supplying, standby and the like, and each operating indoor unit can operate in the same state or different states; the rest indoor units are in the non-running state and comprise: shutdown and standby. According to the scheme, the starting ratio of the indoor units is obtained through the total starting capacity of the indoor units and the total starting capacity of the outdoor units, wherein the total starting capacity of the indoor units is the sum of the refrigerating capacity and the heating capacity of each indoor unit in the running state, and the total starting capacity of the outdoor units is the sum of the refrigerating capacity and the heating capacity of each outdoor unit in the running state.
In one embodiment, the determining the current indoor unit startup ratio and acquiring the current unit system high voltage when the unit is running includes:
when the unit operates, the unit operation state is detected, and when the indoor unit operates in heating mode, the current indoor unit starting rate is determined, and the current unit system high voltage is obtained.
Specifically, when the indoor unit of the multi-split air-conditioning system operates in a heating mode, in order to avoid the accumulation of the refrigerant, the electronic expansion valve of the indoor unit in the non-operating state is controlled to keep a certain opening degree, so that the refrigerant participates in the circulation of the system. Because the high-temperature and high-pressure refrigerant coming out of the compressor is directly supplied to the indoor unit in heating operation in the heating state, if the indoor unit which is not in operation is closed in the heating state, the indoor unit in the non-operation state is also configured to be directly supplied with the high-temperature and high-pressure refrigerant coming out of the compressor, the electronic expansion valve of the indoor unit which is not in operation is impacted by the high-temperature and high-pressure refrigerant, and the noise formed under the impact of the high-temperature and high-pressure refrigerant is more obvious.
In one embodiment, for step S102, the controlling the electronic expansion valve of the indoor unit not in operation according to the current indoor unit startup ratio and the current unit system high pressure includes:
determining a target opening degree to which an electronic expansion valve of an indoor unit which is not operated needs to be adjusted according to the current starting ratio of the indoor unit and the current high pressure of the unit system;
and adjusting the opening of the electronic expansion valve of the indoor unit which is not operated according to the determined target opening.
Specifically, the target opening degree to which the opening degree needs to be adjusted is determined according to the current starting ratio of the indoor unit and the current unit system high pressure, and the target opening degree to which the adaptive opening degree needs to be adjusted is correspondingly obtained under the conditions of different current starting ratios of the indoor unit and the current unit system high pressure. After the opening degree of the electronic expansion valve of the indoor unit which is not operated is controlled and adjusted to the target opening degree, the electronic expansion valve of the indoor unit which is not operated is impacted by the refrigerant, the generated noise can be effectively reduced, and a user can not feel the noise.
In one embodiment, the adjusting the opening degree of the electronic expansion valve of the indoor unit that is not in operation according to the determined target opening degree further includes:
determining the opening adjustment amount of an electronic expansion valve of an indoor unit which is not operated within each preset time length according to the current starting ratio of the indoor unit and the current high pressure of the unit system;
and according to the determined opening adjustment amount in each preset time, carrying out opening increasing adjustment on the electronic expansion valve of the indoor unit which is not in operation.
Specifically, the opening adjustment amount within each preset time is determined according to the current indoor unit starting ratio and the current unit system high pressure by using the current indoor unit starting ratio and the current unit system high pressure, and the adaptive opening adjustment amount within each preset time is correspondingly obtained under the condition of different current indoor unit starting ratios and the current unit system high pressure, so that the fluctuation of the system can be better reduced in the adjustment process, and the unit can be favorably ensured to reach a stable state within the shortest time.
In one embodiment, the method further comprises:
and after the electronic expansion valve of the indoor unit which is not operated is adjusted to the target opening degree to be adjusted, controlling the electronic expansion valve of the indoor unit which is not operated to maintain the opening degree unchanged.
Specifically, after the target opening degree is adjusted, the target opening degree is maintained, so that the electronic expansion valve of the indoor unit which is not in operation is impacted by the refrigerant, the generated noise can be effectively reduced, and the user can not feel the noise. And determining a new target opening according to the current starting ratio of the indoor unit and the current high pressure of the unit system until the current starting ratio of the indoor unit and/or the current high pressure of the unit system are/is greatly changed.
In one embodiment, the determining, according to the current indoor unit startup ratio and the current unit system high pressure, a target opening degree to which an electronic expansion valve of an indoor unit that is not in operation needs to be adjusted includes:
determining a target combination condition met by the current starting ratio of the indoor unit and the high voltage of the current unit system according to a preset combination condition of the starting ratio of the indoor unit and the high voltage of the unit system under different conditions;
and determining the target opening degree to which the electronic expansion valve of the indoor unit which is not operated needs to be adjusted under the target combination condition according to the corresponding relation between each combination condition and the target opening degree.
Specifically, the preset combination conditions of the starting ratio of the indoor unit and the high voltage of the unit system under different conditions may be as follows: when the starting ratio x of the indoor unit is more than or equal to a set value A and the high pressure y of the unit system is more than or equal to a set value B, the first combination condition is set; when the starting ratio x of the indoor unit is less than the set value A and the high pressure y of the unit system is more than or equal to the set value B, the second combination condition is adopted; and when the starting ratio x of the indoor unit is more than or equal to the set value A and the high pressure y of the unit system is less than the set value B, the third combination condition is adopted. And according to the combination conditions under the three different conditions, determining which combination condition the current starting ratio a of the indoor unit and the current high voltage b of the unit system meet, namely determining a target combination condition.
The correspondence between each of the combination conditions and the target opening degree may be as follows: under the first combination condition, the corresponding target opening degree is C1; the corresponding target opening degree under the second combination condition is C2; in the third combination condition, the corresponding target opening degree is C3. According to the corresponding relation between each combination condition and the target opening degree, which target opening degree corresponds to the target combination condition satisfied by the starting ratio a of the current indoor unit and the high pressure b of the current unit system can be determined, and the target opening degree to which the electronic expansion valve of the indoor unit which is not in operation needs to be adjusted is determined under the target combination condition.
Further, the determining an opening adjustment amount of an electronic expansion valve of an indoor unit which is not operated within each preset time period according to the current starting ratio of the indoor unit and the current high pressure of the unit system comprises:
and determining the opening degree adjustment quantity of the electronic expansion valve of the indoor unit which is not operated in the target combination condition in each preset time according to the corresponding relation between each combination condition and the opening degree adjustment quantity in each preset time.
Specifically, the correspondence between each of the combination conditions and the opening degree adjustment amount per preset time period may be as follows: under the first combination condition, corresponding to the opening degree adjustment amount Δ c1 within every preset X seconds; the opening degree adjustment amount Δ c2 corresponding to every preset X seconds under the second combination condition; the third combination condition corresponds to the opening degree adjustment amount Δ c2 every preset X seconds.
According to the corresponding relation between each combination condition and the opening degree adjustment amount in each preset time length, which opening degree adjustment amount in each preset time length corresponds to the target combination condition met by the current starting ratio a of the indoor unit and the current high pressure b of the unit system can be determined, and the opening degree adjustment amount in each preset time length of the electronic expansion valve of the indoor unit which is not operated under the target combination condition is taken as the opening degree adjustment amount in each preset time length.
The related example embodiments described above are further illustrated by specific example embodiments below.
Taking the case that when an indoor unit in a multi-split air-conditioning system runs to heat, the method triggers and executes the scheme of the application, when the multi-split air-conditioning system is normally started, the running state of the unit is detected, whether the unit has the indoor unit running in the heating state is judged, and if the unit has the indoor unit running in the heating state, the following control can be performed when the unit runs to heat:
determining the current starting ratio a of the indoor unit according to the starting operation conditions of the indoor unit and the outdoor unit, and synchronously detecting the high voltage b of the system at the moment:
if the starting ratio a of the current indoor unit is larger than or equal to a set value A, and the high pressure B of the current unit system is larger than or equal to a set value B, the impact of a refrigerant in the system on an electronic expansion valve of the indoor unit which is not in operation is considered to be large, the electronic expansion valve of the indoor unit which is not in operation is controlled to increase delta C1 within every preset X seconds until the opening degree of the electronic expansion valve of the indoor unit which is not in operation is increased to C1, and when the opening degree of the electronic expansion valve of the indoor unit which is not in operation is increased to C1, the electronic expansion valve of the indoor unit which is not in operation maintains the current opening degree.
If the starting ratio a of the current indoor unit is less than the set value A, and the high pressure B of the current unit system is more than or equal to the set value B, the refrigerant in the system is considered to have large impact on the electronic expansion valve of the indoor unit which is not in operation, the electronic expansion valve of the indoor unit which is not in operation is controlled to increase delta C2 within every preset X seconds until the opening degree of the electronic expansion valve of the indoor unit which is not in operation is increased to C2, and when the opening degree of the electronic expansion valve of the indoor unit which is not in operation is increased to C2, the electronic expansion valve of the indoor unit which is not in operation maintains the current opening degree.
If the starting ratio a of the current indoor unit is more than or equal to a set value A, and the high pressure B of the current unit system is less than a set value B, the impact of a refrigerant in the system on the electronic expansion valve of the indoor unit which is not in operation is considered to be small, the electronic expansion valve of the indoor unit which is not in operation is controlled to increase delta C3 within every preset X seconds until the opening degree of the electronic expansion valve of the indoor unit which is not in operation is increased to C3, and when the opening degree of the electronic expansion valve of the indoor unit which is not in operation is increased to C3, the electronic expansion valve of the indoor unit which is not in operation maintains the current opening degree.
If the starting ratio a of the current indoor unit is less than the set value A and the high pressure B of the current unit system is less than the set value B, the impact of the refrigerant in the system on the electronic expansion valve of the indoor unit which is not in operation is basically not influenced, the generated noise is very small, the influence on a user is not caused, or the noise is not generated, and the current opening degree of the electronic expansion valve of the indoor unit which is not in operation is maintained.
Referring to fig. 2, fig. 2 is a schematic structural diagram illustrating a noise reduction control device of a multi-split air conditioner indoor unit according to an exemplary embodiment, and as shown in fig. 2, the noise reduction control device 2 of the multi-split air conditioner indoor unit includes:
the determining and obtaining module 201 is used for determining the current starting ratio of the indoor unit when the unit runs and obtaining the current high voltage of the unit system;
and the control module 202 is configured to control the opening of the electronic expansion valve of the indoor unit that is not in operation according to the current indoor unit startup ratio and the current unit system high pressure.
Further, the determining and acquiring module 201 is specifically configured to:
when the unit operates, the unit operation state is detected, and when the indoor unit operates in heating mode, the current indoor unit starting rate is determined, and the current unit system high voltage is obtained.
Further, in the determining and obtaining module 201, the determining of the current indoor unit startup ratio includes:
according to the following formula: and determining the current indoor unit starting ratio, wherein the indoor unit starting ratio is the total indoor unit starting capacity/the total outdoor unit starting capacity.
Further, the control module 202 is specifically configured to:
determining a target opening degree to which an electronic expansion valve of an indoor unit which is not operated needs to be adjusted according to the current starting ratio of the indoor unit and the current high pressure of the unit system;
and adjusting the opening of the electronic expansion valve of the indoor unit which is not operated according to the determined target opening.
Further, the adjusting the opening degree of the electronic expansion valve of the indoor unit which is not operated according to the determined target opening degree further includes:
determining the opening adjustment amount of an electronic expansion valve of an indoor unit which is not operated within each preset time length according to the current starting ratio of the indoor unit and the current high pressure of the unit system;
and according to the determined opening adjustment amount in each preset time, carrying out opening increasing adjustment on the electronic expansion valve of the indoor unit which is not in operation.
Further, the determining a target opening degree to which an electronic expansion valve of an indoor unit that is not in operation needs to be adjusted according to the current starting ratio of the indoor unit and the current high pressure of the unit system includes:
determining a target combination condition met by the current starting ratio of the indoor unit and the high voltage of the current unit system according to a preset combination condition of the starting ratio of the indoor unit and the high voltage of the unit system under different conditions;
and determining the target opening degree to which the electronic expansion valve of the indoor unit which is not operated needs to be adjusted under the target combination condition according to the corresponding relation between each combination condition and the target opening degree.
Further, the determining an opening adjustment amount of an electronic expansion valve of an indoor unit which is not operated within each preset time period according to the current starting ratio of the indoor unit and the current high pressure of the unit system comprises:
and determining the opening degree adjustment quantity of the electronic expansion valve of the indoor unit which is not operated in the target combination condition in each preset time according to the corresponding relation between each combination condition and the opening degree adjustment quantity in each preset time.
Further, the control module 202 is further specifically configured to:
and after the electronic expansion valve of the indoor unit which is not operated is adjusted to the target opening degree to be adjusted, controlling the electronic expansion valve of the indoor unit which is not operated to maintain the opening degree unchanged.
Further, the controlling an electronic expansion valve of an indoor unit that is not in operation according to the current indoor unit startup ratio and the current unit system high pressure specifically includes:
if the starting ratio a of the current indoor unit is more than or equal to a set value A and the high pressure B of the current unit system is more than or equal to a set value B, controlling the electronic expansion valve of the indoor unit which does not operate to increase delta C1 within every preset X seconds until the opening of the electronic expansion valve of the indoor unit which does not operate is increased to C1;
if the starting ratio a of the current indoor unit is less than the set value A and the high pressure B of the current unit system is more than or equal to the set value B, controlling the electronic expansion valve of the indoor unit which does not operate to increase delta C2 within every preset X seconds until the opening of the electronic expansion valve of the indoor unit which does not operate is increased to C2;
and if the starting ratio a of the current indoor unit is more than or equal to a set value A and the high pressure B of the current unit system is less than a set value B, controlling the electronic expansion valve of the indoor unit which does not operate to increase delta C3 within every preset X seconds until the opening of the electronic expansion valve of the indoor unit which does not operate is increased to C3.
Further, the controlling an electronic expansion valve of an indoor unit that is not in operation according to the current indoor unit startup ratio and the current unit system high pressure further specifically includes:
and if the starting ratio a of the current indoor unit is less than the set value A and the high pressure B of the current unit system is less than the set value B, maintaining the current opening degree of the electronic expansion valve of the indoor unit which is not operated.
With regard to the noise reduction control device 2 of the multi-split air conditioner indoor unit in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.
Referring to fig. 3, fig. 3 is a schematic structural diagram illustrating a multi-split air conditioner according to an exemplary embodiment, and as shown in fig. 3, the multi-split air conditioner 3 includes:
one or more memories 301 having executable programs stored thereon;
one or more processors 302 for executing the executable programs in the memory 301 to implement the steps of any of the methods described above.
With regard to the multi-split air conditioner 3 in the above-described embodiment, the specific manner in which the processor 302 executes the program in the memory 301 has been described in detail in the embodiment related to the method, and will not be described in detail here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and further, as used herein, connected may include wirelessly connected; the term "and/or" is used to include any and all combinations of one or more of the associated listed items.
Any process or method descriptions in flow charts or otherwise described herein may be understood as: represents modules, segments or portions of code which include one or more executable instructions for implementing specific logical functions or steps of a process, and the scope of the preferred embodiments of the present application includes other implementations 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 embodiments of the present application.
It should be understood that portions of the present application 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 application 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.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. In this specification, the schematic representations of the terms used above 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.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (7)
1. A noise reduction control method for an indoor unit of a multi-split air conditioner is characterized by comprising the following steps:
when the unit runs, determining the starting ratio of the current indoor unit and acquiring the high voltage of the current unit system;
determining a threshold judgment combination condition met by the current starting ratio of the indoor unit and the high pressure of the current unit system, wherein the threshold judgment combination condition is used for indicating the impact degree of a refrigerant on an electronic expansion valve of the indoor unit which is not operated;
judging whether the combination condition needs to control the opening degree of the electronic expansion valve of the indoor unit which is not operated or not according to the threshold value;
if so, acquiring an opening control mode corresponding to the threshold judgment combination condition, and performing increase adjustment control on the opening of the electronic expansion valve of the indoor unit which is not in operation by using the acquired opening control mode;
wherein, the determining the current starting ratio of the indoor unit comprises:
according to the following formula: and (4) determining the current indoor unit starting ratio, wherein the indoor unit starting ratio = indoor unit starting total capacity/outdoor unit starting total capacity.
2. The method of claim 1, wherein the determining a current indoor unit startup ratio and obtaining a current unit system high voltage when the unit is running comprises:
when the unit operates, the unit operation state is detected, and when the indoor unit operates in heating mode, the current indoor unit starting rate is determined, and the current unit system high voltage is obtained.
3. The method according to claim 1, wherein the threshold value determination combination condition corresponds to an opening degree control method, and the method includes:
and carrying out opening increasing adjustment on the electronic expansion valve until the opening is adjusted to the target opening corresponding to the threshold judgment combination condition.
4. The method according to claim 1, wherein the increase adjustment control of the opening degree of the electronic expansion valve of the indoor unit that is not in operation includes:
and judging the opening degree adjustment amount within each preset time corresponding to the combination condition by using the threshold value, and performing opening degree increasing adjustment on the electronic expansion valve of the indoor unit which is not operated.
5. The method of claim 1, wherein determining whether the opening degree control of the indoor unit electronic expansion valve which is not in operation is required by the threshold judgment combination condition comprises:
if the starting ratio a of the current indoor unit is more than or equal to a set value A, and the high pressure B of the current unit system is more than or equal to a set value B; or if the starting ratio a of the current indoor unit is less than the set value A, and the high pressure B of the current unit system is more than or equal to the set value B; or if the starting ratio a of the current indoor unit is more than or equal to a set value A, and the high pressure B of the current unit system is less than a set value B; the opening degree of the electronic expansion valve of the indoor unit which is not in operation needs to be controlled;
and if the current starting ratio a of the indoor unit is less than the set value A and the current high pressure B of the unit system is less than the set value B, opening control on the electronic expansion valve of the indoor unit which is not operated is not needed.
6. The utility model provides a control device that makes an uproar falls in multi-split air conditioning indoor set which characterized in that, the device includes:
the determining and obtaining module is used for determining the current starting rate of the indoor unit when the unit runs and obtaining the current high voltage of the unit system; wherein, the determining the current starting ratio of the indoor unit comprises: according to the following formula: the starting ratio of the indoor unit = starting total capacity of the indoor unit/starting total capacity of the outdoor unit, and the current starting ratio of the indoor unit is determined;
the control module is used for determining a threshold judgment combination condition met by the current starting ratio of the indoor unit and the high pressure of the current unit system, and the threshold judgment combination condition is used for indicating the impact degree of a refrigerant on an electronic expansion valve of the indoor unit which is not operated; judging whether the combination condition needs to control the opening degree of the electronic expansion valve of the indoor unit which is not operated or not according to the threshold value; and if so, acquiring an opening control mode corresponding to the threshold judgment combination condition, and performing increase adjustment control on the opening of the electronic expansion valve of the indoor unit which is not in operation by using the acquired opening control mode.
7. A multi-split air conditioner, comprising:
one or more memories having executable programs stored thereon;
one or more processors configured to execute the executable program in the memory to implement the steps of the method of any one of claims 1-6.
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| CN114234353B (en) * | 2021-12-20 | 2023-03-21 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve of multi-connected unit |
| CN114484720A (en) * | 2022-01-17 | 2022-05-13 | 青岛海尔空调电子有限公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
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