CN112665115B - Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium - Google Patents
Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium Download PDFInfo
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- CN112665115B CN112665115B CN201910986191.6A CN201910986191A CN112665115B CN 112665115 B CN112665115 B CN 112665115B CN 201910986191 A CN201910986191 A CN 201910986191A CN 112665115 B CN112665115 B CN 112665115B
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Abstract
The invention provides a multi-online defrosting method, a multi-online defrosting device, a multi-online air conditioning system and a readable storage medium, wherein the method comprises the following steps: detecting whether a user exists in a working area corresponding to the indoor unit, and judging the user existence state of the indoor unit according to the detection result; calculating the sum of first capacity of an indoor unit without a user, and calculating the ratio of the sum of the first capacity to the capacity of an outdoor unit; and controlling the indoor unit to enter a corresponding defrosting mode according to the ratio. According to the invention, the existing state of the user of each indoor unit of the multi-split air-conditioning system can be analyzed, the actual use condition of the multi-split air-conditioning system is represented by the capacity-capacity ratio related to the state of each indoor unit, and defrosting control is carried out according to the actual operation condition, so that the defrosting control can be matched with the actual use condition of the multi-split air-conditioning system, the indoor temperature is kept stable as much as possible while defrosting, and the thermal comfort experience of the user is ensured.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a multi-online defrosting method and device, a multi-online air conditioning system and a readable storage medium.
Background
The multi-split air conditioning system is a refrigeration/heating circulation system formed by connecting at least one outdoor unit and a plurality of indoor units. When the multi-split air conditioning system heats under the low-temperature working condition, the outdoor unit heat exchanger is easy to frost, the heat exchange efficiency is rapidly reduced, the heat exchange effect is seriously influenced, and the multi-split air conditioning system can enter a defrosting mode at the moment for avoiding the continuous reduction of the heating effect. In the traditional defrosting method, refrigerants in all indoor machine heat exchangers are evaporated and absorb heat uniformly, and then the frost layer of the outdoor heat exchanger is melted by using heat released by discharged high-temperature and high-pressure gas; in the process, the actual use condition of each indoor unit is not considered, and each indoor unit performs indifferent refrigeration, so that the indoor temperature is seriously fluctuated, and the thermal comfort experience of a user is influenced.
Disclosure of Invention
The invention mainly aims to provide a multi-online defrosting method and device, a multi-online air conditioning system and a readable storage medium, and aims to solve the technical problem that the serious fluctuation of indoor temperature in the defrosting process of the multi-online air conditioning system influences the thermal comfort experience of a user.
In order to achieve the above object, an embodiment of the present invention provides a multi-online defrosting method applied to a multi-online air conditioning system, where the multi-online air conditioning system includes an outdoor unit and a plurality of indoor units, and the multi-online defrosting method includes:
detecting whether a user exists in a working area corresponding to the indoor unit, and judging the user existence state of the indoor unit according to a detection result, wherein the user existence state comprises the absence of the user;
acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the first capacity of the indoor unit without the user, and calculating the ratio of the sum of the first capacity to the capacity of the outdoor unit;
and controlling the indoor unit to enter a corresponding defrosting mode according to the ratio.
Optionally, the step of controlling the indoor unit to enter the corresponding defrosting mode according to the ratio includes:
comparing the ratio with a preset threshold value;
if the ratio is larger than or equal to the preset threshold, controlling the indoor unit to defrost in a comfortable way;
and if the ratio is smaller than the preset threshold value, controlling the indoor unit to carry out conventional defrosting.
Optionally, the user presence state further includes user presence, and the step of controlling the indoor unit to perform comfort defrosting includes:
controlling an electronic expansion valve of an indoor unit which does not exist by a user to be opened, controlling a fan to be opened, and controlling the indoor unit to run at the highest wind speed, controlling the electric auxiliary heating to be opened and controlling the swing wind angle to be the largest;
and controlling the electronic expansion valve and the fan of the indoor unit existing in the user to be closed.
Optionally, the user presence status further includes user presence, and the step of controlling the indoor unit to perform normal defrosting includes:
controlling an electronic expansion valve of an indoor unit which does not exist by a user to be opened, controlling a fan to be opened, and controlling the indoor unit to run at the highest wind speed, controlling the electric auxiliary heating to be opened and controlling the swing wind angle to be the largest;
and controlling the opening of an electronic expansion valve and the closing of a fan of an indoor unit existing in a user.
Optionally, the user presence status further includes user presence, and the step of controlling the indoor unit to perform normal defrosting further includes:
calculating a ratio difference value between the preset threshold and the ratio, and calculating to obtain a capacity difference value according to the ratio difference value and the capacity of the outdoor unit;
determining compensation indoor unit combinations from indoor units existing in users according to the capacity difference, wherein the sum of the second capacity of the compensation indoor units in each compensation indoor unit combination is greater than or equal to the capacity difference;
determining a target combination from the compensated indoor unit combinations based on a preset rule;
controlling the opening of an electronic expansion valve of an indoor unit which does not exist by a user and a target indoor unit in the target combination, starting a fan, operating at the highest wind speed, starting an electric auxiliary heater and maximizing the swing angle;
and controlling the electronic expansion valve and the fan of the indoor unit which is not in the target combination and exists by the user to be closed.
Optionally, the step of determining a target combination from the compensated indoor unit combinations based on a preset rule includes:
respectively determining the number of the compensation indoor units included in each compensation indoor unit combination, and determining the compensation indoor unit combination with the least compensation indoor unit number as a target combination; or the like, or, alternatively,
respectively detecting the number of regional users of the working region corresponding to each compensation indoor unit, respectively determining the number of influencing users corresponding to each compensation indoor unit combination according to the number of regional users, and determining the compensation indoor unit combination with the least number of influencing users as a target combination.
Optionally, the multiple on-line frost control method further includes:
monitoring the frosting state of the outdoor unit;
the step of detecting whether a user exists in a working area corresponding to the indoor unit and judging the user existing state of the indoor unit according to the detection result comprises the following steps:
and when the frosting of the outdoor unit is judged, detecting whether a user exists in a working area corresponding to the indoor unit, and judging the user existence state of the indoor unit according to the detection result.
In addition, to achieve the above object, an embodiment of the present invention further provides a multiple online defrosting apparatus, including:
the state judgment module is used for detecting whether a user exists in a working area corresponding to the indoor unit or not and judging the user existence state of the indoor unit according to a detection result, wherein the user existence state comprises the absence of the user;
the ratio calculation module is used for acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the first capacity capacities of the indoor unit without the user, and calculating the ratio of the sum of the first capacity capacities to the capacity of the outdoor unit;
and the defrosting control module is used for controlling the indoor unit to enter a corresponding defrosting mode according to the ratio.
In addition, to achieve the above object, embodiments of the present invention further provide a multi-split air conditioning system, which includes a processor, a memory, and a computer program stored on the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of the multi-split defrosting method as described above are implemented.
In addition, to achieve the above object, an embodiment of the present invention further provides a readable storage medium, where a computer program is stored, where the computer program, when executed by a processor, implements the steps of the multi-split defrosting method as described above.
According to the multi-online defrosting method, the multi-online defrosting device, the multi-online air conditioning system and the readable storage medium, the existing states of users of indoor units of the multi-online air conditioning system are analyzed, the actual use condition of the multi-online air conditioning system is represented by the capacity ratio related to the states of the indoor units, and defrosting control is performed according to the ratio, so that the defrosting control can be matched with the actual use condition of the multi-online air conditioning system, the indoor temperature is kept stable as much as possible while defrosting, and the thermal comfort experience of the users is guaranteed.
Drawings
Fig. 1 is a schematic diagram of a hardware architecture of a multi-split air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the multi-connected defrosting method of the invention;
FIG. 3 is a schematic flow chart of a second embodiment of the multi-connected defrosting method of the invention;
FIG. 4 is a schematic flow chart of a third embodiment of the multi-connected defrosting method of the invention;
fig. 5 is a functional block diagram of a multi-split defrosting apparatus according to a first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The multi-online defrosting method is mainly applied to a multi-online air conditioning system.
Referring to fig. 1, fig. 1 is a hardware architecture diagram of a multi-split air conditioning system according to an embodiment of the present invention. In this embodiment of the present invention, the multi-split air conditioning system may include a processor 1001 (e.g., a Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used for realizing connection communication among the components; the user interface 1003 may include a Display screen (Display), an input unit such as a key (Keyboard); the network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WI-FI interface, WI-FI interface); the memory 1005 may be a Random Access Memory (RAM) or a non-volatile memory (non-volatile memory), such as a magnetic disk memory, and the memory 1005 may optionally be a storage device independent of the processor 1001. Those skilled in the art will appreciate that the hardware configuration depicted in FIG. 1 is not intended to be limiting of the present invention, and may include more or less components than those shown, or some components in combination, or a different arrangement of components.
With continued reference to FIG. 1, the memory 1005 of FIG. 1, which is one type of readable storage medium, may include an operating system, a network communication module, and a computer program. In fig. 1, the network communication module may be used to connect to the database, and perform data communication with the database; and the processor 1001 may call a computer program stored in the memory 1005 and perform the multiple on-line defrosting method provided by the embodiment of the present invention.
The embodiment of the invention provides a multi-connected defrosting method.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the multi-on-line defrosting method according to the present invention.
In this embodiment, the multi-online defrosting method is applied to a multi-online air conditioning system, the multi-online air conditioning system includes an outdoor unit and a plurality of indoor units, and the multi-online defrosting method includes the following steps:
step S10, detecting whether a user exists in a working area corresponding to the indoor unit, and judging the user existing state of the indoor unit according to the detection result;
the multi-split air-conditioning system is a refrigeration/heating circulating system formed by connecting at least one outdoor unit and a plurality of indoor units; in the multi-split air conditioning system, it may be considered that a certain control device performs control, but the control device may be a single device or an abstract function device composed of a plurality of different physical devices. When the existing multi-split air conditioning system is defrosted, all indoor units uniformly evaporate and absorb heat, and then the frost layer of an outdoor heat exchanger is melted by using heat released by discharged high-temperature and high-pressure gas; in the process, the actual use condition of the multi-split air conditioning system is not considered, and each indoor unit performs indifferent refrigeration, so that the indoor temperature fluctuation is caused, and the thermal comfort experience of a user is influenced. In contrast, according to the multi-online defrosting method provided by the embodiment, the existing states of users of the indoor units of the multi-online air-conditioning system are analyzed, the actual use condition of the multi-online air-conditioning system is represented by the capacity-capacity ratio related to the states of the indoor units, and defrosting control is performed according to the actual operation condition, so that the defrosting control can be attached to the actual use condition of the multi-online air-conditioning system, the indoor temperature is kept stable as much as possible while defrosting, and the thermal comfort experience of the users is guaranteed.
When defrosting is performed in the multi-split air conditioning system of the embodiment, firstly, working areas corresponding to the indoor units are respectively detected to determine whether users exist in the working areas; if a user exists in a working area corresponding to the indoor unit (for example, a room in which the indoor unit is installed can be regarded as the working area of the indoor unit, and the current user exists in the area), determining that the user existence state of the indoor unit is the user existence; and if no user exists in the working area corresponding to the indoor unit, determining that the user existence state of the indoor unit is user nonexistence. The user presence state of an indoor unit may be an attribute representing whether or not the indoor unit may affect the user.
In this embodiment, the detection of whether a user exists in the working area corresponding to each indoor unit may be implemented in various ways. For example, acquiring an image of the working area through a camera (the camera may be a part of the indoor unit or an external independent device), then performing human body recognition on the image, and if the human body image is recognized in the image, determining that a user exists in the working area; if the human body image is not recognized in the image, it can be determined that no user exists in the region. For another example, an infrared imaging device may acquire an infrared image of the area, and then perform human body recognition on the infrared image to determine whether a user is present in the area. Of course, other methods may be used for the detection and determination.
Step S20, acquiring the capacity of the indoor unit and the outdoor unit after the judgment state, calculating the sum of the first capacity of the indoor unit without the user, and calculating the ratio of the sum of the first capacity to the capacity of the outdoor unit;
in this embodiment, when the user presence state of each indoor unit is determined, the actual use condition of the multi-split air conditioning system needs to be analyzed according to the user presence state of each indoor unit, and the actual use condition can be represented by parameters related to capacity of the indoor unit and the outdoor unit. Specifically, first, the capacity of each indoor unit and the capacity of the outdoor unit can be obtained; secondly, determining all indoor units without users, and then adding the capacity of all the indoor units without users to obtain the sum of the first capacity; when the first capacity sum is obtained, the ratio of the first capacity sum to the outdoor unit capacity sum can be calculated, and the ratio can be used for representing the actual use condition of the multi-split air-conditioning system. The larger the ratio is, the more indoor units which do not influence the user are considered to be, or the larger the capacity-capacity proportion of the indoor units which do not influence the user is considered to be to a certain extent; when the specific gravity is high to a certain degree, the defrosting operation can be finished without affecting the indoor unit of the user.
For example, the indoor unit whose user status is that the user does not exist includes three units a, b, and c, and the corresponding capacity capacities thereof are respectively denoted as Ea, Eb, and Ec; the outdoor unit comprises z units, and the capacity corresponding to the z units is Ez; then, the sum of the first capacity of the indoor units, which does not exist for all users, can be calculated and recorded as E1, that is, E1 is equal to Ea + Eb + Ec + Ed + Ee, and then the ratio X of the sum of the capacity E1 to the capacity Ez of the outdoor unit is equal to E1/Ez, so as to represent the actual use condition of the multi-split air conditioning system.
And step S30, controlling the indoor unit to enter a corresponding defrosting mode according to the ratio.
In this embodiment, a plurality of different defrosting modes can be preset, and the defrosting treatment to be adopted by the indoor unit can be different for different defrosting modes; in the same defrosting mode, different indoor units can also adopt different defrosting treatments, for example, in the same defrosting mode, some indoor units can open the expansion valve, and some indoor units can not open the expansion valve. When the ratio of the sum of the first capacity and the capacity of the outdoor unit is obtained, the actual use condition of the multi-split air-conditioning system can be roughly determined according to the ratio, then the indoor units are controlled to enter the corresponding defrosting modes according to the ratio, a certain number of indoor units can be controlled to carry out defrosting treatment according to the use condition of the current indoor units, the defrosting capacity and efficiency are ensured in the defrosting process, the heating efficiency of the indoor units (with people when the multi-split air-conditioning system is started) used by a user is ensured as much as possible, and therefore the defrosting process can be matched with the actual use condition of the multi-split air-conditioning system.
Further, when defrosting is completed, each indoor unit can exit the defrosting mode and restore the original working state, for example, enter a heating mode, and the like, and the working settings of each component, such as a fan, an expansion valve, and the like, can be adjusted accordingly.
In the embodiment, whether a user exists in a working area corresponding to the indoor unit is detected, and the user existence state of the indoor unit is judged according to the detection result, wherein the user existence state comprises the absence of the user; acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the first capacity of the indoor unit without the user, and calculating the ratio of the sum of the first capacity to the capacity of the outdoor unit; and controlling the indoor unit to enter a corresponding defrosting mode according to the ratio. Through the mode, the multi-online defrosting method provided by the embodiment analyzes the user existing state of each indoor unit of the multi-online air-conditioning system, represents the actual use condition of the multi-online air-conditioning system through the capacity ratio related to the state of each indoor unit, and performs defrosting control according to the ratio, so that the defrosting control can be attached to the actual use condition of the multi-online air-conditioning system, the indoor temperature is kept stable as much as possible while defrosting, and the thermal comfort experience of users is guaranteed.
Based on the embodiment shown in fig. 2, a second embodiment of the multiple defrosting method according to the present invention is provided.
Referring to fig. 3, fig. 3 is a schematic flow chart of a multi-on-line defrosting method according to a second embodiment of the present invention.
In this embodiment, the step S30 includes:
step S31, comparing the ratio with a preset threshold value;
in this embodiment, two different defrosting modes, namely comfort defrosting and conventional defrosting, may be preset; the comfort defrosting is mainly implemented by the indoor unit of the indoor unit which does not exist by a user, namely, the indoor unit which does not influence the user is mainly implemented by defrosting, so that the heating capacity of the indoor unit (the indoor unit which exists by the user) which is used by people is ensured; and the conventional defrosting is performed by using as many indoor units as possible. Specifically, a preset threshold may be preset, and then the ratio obtained in step S20 is compared with the preset threshold; and determining whether the number of indoor units which do not influence the user is enough according to the size relationship of the indoor units and the outdoor units, and then entering a corresponding defrosting mode.
Step S32, if the ratio is larger than or equal to the preset threshold, controlling the indoor unit to defrost in comfort;
in this embodiment, if the ratio obtained in step S20 is greater than or equal to the preset threshold, it may be considered that the number of indoor units that do not affect the user at present is sufficient, and at this time, the indoor units may be controlled to perform comfort defrosting, mainly by using the indoor units that do not exist in the user, that is, mainly by using the indoor units that do not affect the user to perform defrosting, so as to ensure the heating capability of the indoor units that are used by people (the indoor units that exist in the user).
Further, the user existing state further includes user existence, and the step of controlling the indoor unit to perform comfort defrosting includes:
a321, controlling an electronic expansion valve of an indoor unit which does not exist in users to be opened, controlling a fan to be opened, and controlling the indoor unit to run at the highest wind speed, the electric auxiliary heating to be opened and controlling the swing angle to be the largest;
and A322, controlling the electronic expansion valve and the fan of the indoor unit existing by the user to be closed.
In this embodiment, when comfort defrosting is performed, defrosting is mainly performed by an indoor unit that does not exist for a user. At the moment, the electronic expansion valve of the indoor unit which does not exist by a user is controlled to be opened, the fan is controlled to be opened, the indoor unit runs at the highest rotating speed, the electric auxiliary heating is started, and the swing angle is maximum; and for the indoor unit existing in the user, the electronic expansion valve and the fan are controlled to be closed, so that the heating capacity of the indoor unit (the indoor unit existing in the user) used by people is ensured as much as possible while defrosting is carried out. Of course, the electronic expansion valve of the indoor unit, which is not available to the user, may be set to a larger opening degree to increase the defrosting speed.
And step S33, if the ratio is smaller than the preset threshold, controlling each indoor unit to carry out conventional defrosting.
In this embodiment, if the ratio obtained in step S20 is smaller than the preset threshold, it may be considered that the number of indoor units that do not affect the user is small (or more indoor units are being used), at this time, in order to ensure the defrosting speed, in addition to the indoor unit that does not affect the user (the indoor unit that does not exist), defrosting needs to be performed through the indoor unit that affects the user (the indoor unit that exists), the defrosting mode at this time may be called conventional defrosting, that is, defrosting is performed through as many indoor units as possible.
Further, the user presence state further includes user presence, and the step of controlling the indoor unit to perform conventional defrosting includes:
a331, controlling an electronic expansion valve of an indoor unit which does not exist in users to be opened, controlling a fan to be opened, and controlling the indoor unit to run at the highest wind speed, controlling an electric auxiliary heating to be opened and controlling the swing angle to be the largest;
a332 controls the opening of an electronic expansion valve and the closing of a fan of an indoor unit existing in a user.
In the embodiment, when the conventional defrosting is performed, the aim is to perform the defrosting through as many indoor units as possible; of course, the specific defrosting settings can be different for different indoor units. Specifically, for an indoor unit which does not exist in users, the electronic expansion valve of the indoor unit is controlled to be opened, the fan is controlled to be opened, the indoor unit runs at the highest rotating speed, the electric auxiliary heating is started, and the swing angle is maximum; for the indoor unit existing in the user, the electronic expansion opening and the fan closing are controlled; by the mode, the defrosting capacity is improved by defrosting through as many indoor units as possible, the heating capacity of the indoor units existing in the user can be guaranteed as much as possible, and the thermal comfort experience of the user is not influenced. The opening degree of the electronic expansion valve may be different for different indoor units, for example, the electronic expansion valve of an indoor unit that is not present by a user has a large opening degree, and the electronic expansion valve of an indoor unit that is present by a user has a small opening degree.
Further, the user presence state further includes user presence, and the step of controlling the indoor unit to perform conventional defrosting further includes:
a333, calculating a ratio difference value between the preset threshold and the ratio, and calculating a capacity difference value according to the ratio difference value and the capacity of the outdoor unit;
in this embodiment, because the boundary between the conventional defrosting and the comfortable defrosting is represented by a preset threshold corresponding to the capacity, the indoor unit of the user that needs to be subjected to defrosting compensation can be determined according to the capacity, so that the effect of the conventional defrosting approaches to the comfortable defrosting, and the thermal comfort experience of the user is improved. Specifically, when the ratio obtained in step S20 is smaller than the preset threshold, the ratio difference between the preset threshold and the ratio may be calculated, and then the capacity difference may be calculated according to the ratio difference and the capacity of the outdoor unit (i.e., the capacity difference is the product of the ratio difference and the capacity of the outdoor unit). The capacity difference is considered to be the sum of capacities to be achieved by the indoor unit in which the user exists for defrosting.
A334, determining compensated indoor unit combinations from indoor units existing in users according to the capacity difference, wherein the sum of the second capacity of the compensated indoor units in each compensated indoor unit combination is greater than or equal to the capacity difference;
in this embodiment, when the capacity difference is obtained, a plurality of compensated indoor unit combinations may be determined from the indoor units existing in the user according to the capacity difference, and a sum of the second capacity capacities of the compensated indoor units in each compensated indoor unit combination is greater than or equal to the capacity difference. In other words, any combination of the compensating indoor units, by which the compensating indoor unit and the indoor unit not present for the user together have a capacity sufficient for defrosting; if E1 represents the sum of the first capacity of the indoor units which are not available to the user, E2 represents the sum of the second capacity of the indoor units which are compensated for in any combination of compensated indoor units, Ez represents the capacity of the outdoor unit, and Y represents a preset threshold value, then there is (E1+ E2)/Ez ≧ Y. Alternatively, the compensation indoor unit in which the compensation indoor units are combined may be an indoor unit in which no user is supposed to exist (actually, the compensation indoor unit is one in which a user exists), and a defrosting setting similar to comfort defrosting may be adopted.
A335, determining a target combination from the compensated indoor unit combinations based on a preset rule;
in this embodiment, the compensated indoor unit combinations may be various, for example, the capacity difference is 50, and the user-existing indoor units include m, n, p, and q four indoor units, whose corresponding capacity capacities are 40, 30, 20, and 10; the compensation indoor unit combination comprises a plurality of types of (m, n), (m, n, p), (m, n, q), and the like. When the compensation indoor unit combination has a plurality of types, one of the compensation indoor unit combinations can be determined as a target combination based on a certain rule, and the subsequent defrosting treatment is carried out according to the target combination. Of course, the rule may be set according to actual needs, and may be, for example, manually selected, randomly selected, or in other manners.
Optionally, the process of determining the target combination from the compensated indoor unit combinations based on the preset rule may be performed based on the minimum number of indoor units. Specifically, the number of the compensated indoor units included in each of the compensated indoor unit combinations may be determined, for example, in the compensated indoor unit combinations (m, n), (m, n, p), (m, n, q), the number of the compensated indoor units corresponding thereto is 2, 3, or 3, respectively. Then, the combination of the compensated indoor units having the smallest number of compensated indoor units can be determined as the target combination, thereby reducing the number of compensated indoor units as much as possible. In practice, of course, it is possible to have a minimum number of compensated indoor units for a plurality of compensated indoor unit combinations, and one of them can be randomly selected as the target combination, or the target combination can be determined by other means.
Optionally, the process of determining the target combination from the compensated indoor unit combinations based on the preset rule may be performed based on a mode that affects the least number of users. Specifically, for each compensation indoor unit, the number of regional users in the corresponding working region can be respectively detected; when the number of zone users for each compensated indoor unit is obtained, the number of influencing users corresponding to each compensated indoor unit combination can be respectively calculated, for example, if a certain compensated indoor unit combination includes m and n compensated indoor units, the number of zone users corresponding to the m and n compensated indoor units is 2 and 3 respectively, and the number of influencing users corresponding to the compensated indoor unit combination is 5. When the number of the affected users corresponding to each compensated indoor unit combination is obtained, the compensated indoor unit combination with the least number of the affected users can be determined as the target combination, so that the number of the affected users is treated as much as possible. In practice, of course, it is possible that the number of users affected by the combination of the plurality of compensated indoor units is the least, and one of them may be randomly selected as the target combination, or the target combination may be determined by other means.
It is worth mentioning that in practice, it is also possible to combine the above-mentioned ways to determine the target combination. For example, a primary screening combination can be screened out from the compensated indoor unit combination on the basis of the mode of the least number of the indoor units; if only one primary screening combination is available, determining the primary screening combination as a target combination; if the primary screening combination is more than one, screening out a secondary screening combination from the alternative combinations based on a mode of least influencing the number of users, and if the secondary screening combination is only one, determining the primary screening combination as a target combination; if the secondary screening combination is more than one, then the screening may continue based on other rules until one combination remains as the target combination.
A336, controlling the opening of an electronic expansion valve of an indoor unit which does not exist by a user and a target indoor unit in the target combination, starting a fan, operating at the highest wind speed, starting an electric auxiliary heater and enabling the swing angle to be the largest;
and A337, controlling the electronic expansion valve and the fan of the indoor unit existing in the user and not belonging to the target combination to be closed.
In the embodiment, when the target combination is determined, the electronic expansion valve of the indoor unit which does not exist by a user and the target indoor unit in the target combination are controlled to be opened, the fan is controlled to be opened, the indoor unit runs at the highest rotating speed, the electric auxiliary heating is started, and the swing angle is maximum; controlling the electronic expansion opening and the fan closing of the indoor unit which is not in the target combination and exists by the user; by the mode, the defrosting capacity is improved by defrosting through as many indoor units as possible, the heating capacity of the indoor units of other users can be ensured as much as possible, and the thermal comfort experience of the users is not influenced.
Based on the embodiment shown in fig. 2 or fig. 3, a third embodiment of the multiple on-line frost organizing method of the present invention is provided.
Referring to fig. 4, fig. 4 is a schematic flow chart of a multiple on-line defrosting method according to a third embodiment of the invention.
In this embodiment, the multiple on-line defrosting control method further includes:
step S40, monitoring a frosting state of the outdoor unit;
in this embodiment, the multi-split air conditioning system may monitor the frosting state of the outdoor unit in various ways to determine whether the outdoor unit is frosted. Specifically, a temperature sensor may be disposed at the outdoor unit, and when the temperature of the outdoor unit is lower than a certain temperature threshold and the duration of the temperature continuously lower than the temperature threshold is longer than a preset duration, it may be determined that the outdoor unit is frosted. Or, a camera may be disposed at the outdoor unit, an outdoor unit image at the outdoor unit may be obtained through the camera, and then the frosting recognition of the outdoor unit image is performed through a related recognition algorithm or model, and whether the outdoor unit is frosted or not is determined according to the recognition result. Of course, whether the outdoor unit is frosted or not may be known in other ways besides the above example.
The step S10 includes:
and step S11, when the outdoor unit is judged to be frosted, detecting whether a user exists in a working area corresponding to the indoor unit, and judging the user existence state of the indoor unit according to the detection result.
In this embodiment, when it is determined that the outdoor unit is frosted, the step of detecting whether a user exists in the working area corresponding to the indoor unit and determining the user existence state of the indoor unit according to the detection result may be performed, so as to perform the subsequent defrosting process according to the user existence state of each indoor unit.
Through the mode, the frosting state of the outdoor unit can be detected, and the step of judging the user existing state of the indoor unit is executed when the outdoor unit is frosted, so that the frosting state of the outdoor unit can be found in time and frosting treatment is carried out, and normal operation of the multi-split system is ensured.
In addition, the embodiment of the invention also provides a multi-connected defrosting device.
Referring to fig. 5, fig. 5 is a functional module schematic diagram of a multi-split defrosting apparatus according to a first embodiment of the invention.
In this embodiment, the multi-split air conditioner defrosting apparatus includes:
the state judgment module 10 is configured to detect whether a user exists in a working area corresponding to the indoor unit, and judge a user existence state of the indoor unit according to a detection result, where the user existence state includes absence of the user;
a ratio calculation module 20, configured to obtain capacity capacities of the indoor unit and the outdoor unit after the determination state, calculate a sum of first capacity capacities of the indoor unit where the user does not exist, and calculate a ratio between the sum of the first capacity capacities and the capacity of the outdoor unit;
and the defrosting control module 30 is used for controlling the indoor unit to enter a corresponding defrosting mode according to the ratio.
Each virtual function module of the multi-split air conditioning system shown in fig. 1 is stored in a memory 1005 of the multi-split air conditioning system, and is used for implementing all functions of multi-split air conditioning system defrosting; when executed by the processor 1001, the modules may perform a multi-split defrosting function.
Further, the defrosting control module 30 includes:
the size comparison unit is used for comparing the ratio with a preset threshold value;
the first defrosting unit is used for controlling the indoor unit to carry out comfort defrosting if the ratio is greater than or equal to the preset threshold;
and the second defrosting unit is used for controlling the indoor unit to carry out conventional defrosting if the ratio is smaller than the preset threshold value.
Further, the user presence status further includes user presence, and the first defrosting unit includes:
the first control subunit is used for controlling the opening of an electronic expansion valve and the opening of a fan of an indoor unit which does not exist by a user, and the electronic expansion valve, the fan and the fan are operated at the highest wind speed, the electric auxiliary heating valve and the swing angle are the largest;
a second control subunit for controlling the electronic expansion valve and the fan of the indoor unit existing for the user to be closed
Further, the user presence status further includes user presence, and the second defrosting unit includes:
the third control subunit is used for controlling the opening of an electronic expansion valve and the opening of a fan of an indoor unit which does not exist by a user, and the electronic expansion valve, the fan and the fan are operated at the highest wind speed, the electric auxiliary heating valve and the swing angle are the largest;
and the fourth control subunit is used for controlling the opening of an electronic expansion valve and the closing of a fan of the indoor unit existing in the user.
Further, the user presence status further includes user presence, and the second defrosting unit includes:
a difference value calculating subunit, configured to calculate a ratio difference value between the preset threshold and the ratio, and calculate a capacity difference value according to the ratio difference value and a capacity of the outdoor unit;
the first determining subunit is used for determining compensation indoor unit combinations from indoor units existing in users according to the capacity difference, and the sum of the second capacity of the compensation indoor units in each compensation indoor unit combination is greater than or equal to the capacity difference;
the second determining subunit is used for determining a target combination from the compensated indoor unit combinations based on a preset rule;
the fifth control unit is used for controlling the opening of an electronic expansion valve, the opening of a fan, the running at the highest wind speed, the opening of electric auxiliary heating and the maximum swing angle of an indoor unit which does not exist by a user and a target indoor unit in the target combination;
and the sixth control unit is used for controlling the electronic expansion valve and the fan of the indoor unit which is not in the target combination and exists by the user to be closed.
Further, the second determining subunit is specifically configured to determine the number of compensated indoor units included in each compensated indoor unit combination, and determine the compensated indoor unit combination with the smallest number of compensated indoor units as the target combination; or the like, or, alternatively,
the method is specifically used for respectively detecting the number of regional users in the working region corresponding to each compensation indoor unit, respectively determining the number of influencing users corresponding to each compensation indoor unit combination according to the number of regional users, and determining the compensation indoor unit combination with the least number of influencing users as a target combination
Further, the multi-connected defrosting device further comprises:
the state monitoring module is used for monitoring the frosting state of the outdoor unit;
the state judgment module 10 is further configured to detect whether a user exists in a working area corresponding to the indoor unit when the frosting of the outdoor unit is judged, and judge a user existence state of the indoor unit according to a detection result.
The function implementation of each module of the multi-online defrosting device corresponds to each step in the embodiment of the multi-online defrosting method, and the function and implementation process are not described in detail herein.
In addition, the embodiment of the invention also provides a readable storage medium.
The readable storage medium of the present invention stores thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the multi-split defrosting method as described above.
The method implemented when the computer program is executed may refer to various embodiments of the multiple-online defrosting method of the present invention, and details are not described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The multi-online defrosting method is applied to a multi-online air conditioning system, the multi-online air conditioning system comprises an outdoor unit and a plurality of indoor units, and the multi-online defrosting method comprises the following steps:
detecting whether a user exists in a working area corresponding to the indoor unit, and judging the user existence state of the indoor unit according to the detection result, wherein the user existence state comprises user absence and user existence;
acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the first capacity of the indoor unit without the user, and calculating the ratio of the sum of the first capacity to the capacity of the outdoor unit;
comparing the ratio with a preset threshold value;
if the ratio is smaller than the preset threshold, calculating a ratio difference value between the preset threshold and the ratio, and calculating to obtain a capacity difference value according to the ratio difference value and the capacity of the outdoor unit;
determining compensation indoor unit combinations from indoor units existing in users according to the capacity difference, wherein the sum of the second capacity of the compensation indoor units in each compensation indoor unit combination is greater than or equal to the capacity difference;
determining a target combination from the compensated indoor unit combinations based on a preset rule;
controlling the opening of an electronic expansion valve of an indoor unit which does not exist by a user and a target indoor unit in the target combination, starting a fan, operating at the highest wind speed, starting an electric auxiliary heater and maximizing the swing angle;
and controlling the electronic expansion valve and the fan of the indoor unit which is not in the target combination and exists by the user to be closed.
2. The multi-connected frost organizing method of claim 1, wherein the step of comparing the ratio with a preset threshold value is followed by further comprising:
and if the ratio is greater than or equal to the preset threshold, controlling the indoor unit to defrost in a comfortable way.
3. The multi-on-line defrosting method according to claim 2, wherein the controlling of the indoor unit to perform comfort defrosting comprises:
controlling an electronic expansion valve of an indoor unit which does not exist by a user to be opened, controlling a fan to be opened, and controlling the indoor unit to run at the highest wind speed, controlling the electric auxiliary heating to be opened and controlling the swing wind angle to be the largest;
and controlling the electronic expansion valve and the fan of the indoor unit existing in the user to be closed.
4. The multi-on-line defrosting method according to claim 2, wherein the controlling of the indoor unit to perform the normal defrosting includes:
controlling an electronic expansion valve of an indoor unit which does not exist by a user to be opened, controlling a fan to be opened, and controlling the indoor unit to run at the highest wind speed, controlling the electric auxiliary heating to be opened and controlling the swing wind angle to be the largest;
and controlling the opening of an electronic expansion valve and the closing of a fan of an indoor unit existing in a user.
5. The multi-connected defrosting method as claimed in claim 1, wherein the step of determining a target combination from the compensated indoor unit combinations based on preset rules comprises:
respectively determining the number of the compensation indoor units included in each compensation indoor unit combination, and determining the compensation indoor unit combination with the least compensation indoor unit number as a target combination; or the like, or, alternatively,
respectively detecting the number of regional users of the working region corresponding to each compensation indoor unit, respectively determining the number of influencing users corresponding to each compensation indoor unit combination according to the number of regional users, and determining the compensation indoor unit combination with the least number of influencing users as a target combination.
6. The multi-connected defrosting method according to any one of claims 1 to 5, further comprising:
monitoring the frosting state of the outdoor unit;
the step of detecting whether a user exists in a working area corresponding to the indoor unit and judging the user existing state of the indoor unit according to the detection result comprises the following steps:
and when the frosting of the outdoor unit is judged, detecting whether a user exists in a working area corresponding to the indoor unit, and judging the user existence state of the indoor unit according to the detection result.
7. A multi-connected defrosting device, characterized in that the multi-connected defrosting device comprises:
the state judgment module is used for detecting whether a user exists in a working area corresponding to the indoor unit or not and judging the user existence state of the indoor unit according to a detection result, wherein the user existence state comprises user absence and user existence;
the ratio calculation module is used for acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the first capacity capacities of the indoor unit without the user, and calculating the ratio of the sum of the first capacity capacities to the capacity of the outdoor unit;
the defrosting control module is used for comparing the ratio with a preset threshold value; if the ratio is smaller than the preset threshold, calculating a ratio difference value between the preset threshold and the ratio, and calculating to obtain a capacity difference value according to the ratio difference value and the capacity of the outdoor unit; determining compensation indoor unit combinations from indoor units existing in users according to the capacity difference, wherein the sum of the second capacity of the compensation indoor units in each compensation indoor unit combination is greater than or equal to the capacity difference; determining a target combination from the compensated indoor unit combinations based on a preset rule; controlling the opening of an electronic expansion valve of an indoor unit which does not exist by a user and a target indoor unit in the target combination, starting a fan, operating at the highest wind speed, starting an electric auxiliary heater and maximizing the swing angle; and controlling the electronic expansion valve and the fan of the indoor unit which is not in the target combination and exists by the user to be closed.
8. A multi-split air conditioning system comprising a processor, a memory, and a computer program stored on the memory and executable by the processor, wherein the computer program, when executed by the processor, implements the steps of the multi-split defrosting method as set forth in any one of claims 1 to 6.
9. A readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the multi-connected frost method of any of claims 1 to 6.
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