CN112665116B - 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 PDF

Info

Publication number
CN112665116B
CN112665116B CN201910987362.7A CN201910987362A CN112665116B CN 112665116 B CN112665116 B CN 112665116B CN 201910987362 A CN201910987362 A CN 201910987362A CN 112665116 B CN112665116 B CN 112665116B
Authority
CN
China
Prior art keywords
indoor unit
defrosting
state
indoor
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910987362.7A
Other languages
Chinese (zh)
Other versions
CN112665116A (en
Inventor
王正兴
刘群波
黎顺全
雷俊杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, GD Midea Air Conditioning Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201910987362.7A priority Critical patent/CN112665116B/en
Publication of CN112665116A publication Critical patent/CN112665116A/en
Application granted granted Critical
Publication of CN112665116B publication Critical patent/CN112665116B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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: judging the state of the indoor unit, wherein the state comprises power-off and power-on nobody; acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the capacity capacities of the indoor unit which is turned off and the indoor unit which is not turned on, and calculating the ratio of the sum of the capacity capacities to the capacity of the outdoor unit; and controlling the indoor unit to enter a corresponding defrosting mode according to the ratio. According to the invention, the states of the indoor units 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 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 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 is performed, and the thermal comfort experience of a user is ensured.

Description

Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium
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 the multi-split air conditioning system 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:
judging the state of the indoor unit, wherein the state comprises power-off and power-on nobody;
acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the capacity capacities of the indoor unit which is turned off and the indoor unit which is not turned on, and calculating the ratio of the sum of the capacity capacities 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 state further includes that a person is started, and the step of controlling the indoor unit to perform comfort defrosting includes:
and controlling the electronic expansion valves of the shutdown indoor unit and the unmanned indoor unit to be started to be opened, and controlling the electronic expansion valves of the indoor units with people to be started to be closed.
Optionally, the state further includes that a person is started, and the step of controlling the indoor unit to perform conventional defrosting includes:
and controlling the opening of an electronic expansion valve of the indoor unit.
Optionally, the state further includes that someone is started up, and the step of controlling each indoor unit to perform conventional defrosting further includes:
respectively detecting the number of users in the working area corresponding to each indoor unit with people on the start;
determining the indoor unit with a person in the starting up corresponding to the working area with the largest number of users as a target indoor unit;
and controlling the electronic expansion valves of the target indoor unit to be closed, and controlling the electronic expansion valves of all the indoor units except the target indoor unit to be opened.
Optionally, the state further includes a person who is started up, and the step of determining the state of the indoor unit includes:
detecting whether an indoor unit is started;
if the indoor unit is started, detecting whether a person exists in a working area corresponding to the started indoor unit through a preset detector;
if the corresponding working area of the started indoor unit is occupied, judging that the state of the started indoor unit is the occupied state when the indoor unit is started;
and if no person exists in the corresponding working area of the started indoor unit, judging that the state of the started indoor unit is the state of no person.
Optionally, the multiple on-line frost control method further includes:
monitoring the frosting state of the outdoor unit;
the state determining step of the state of the indoor unit includes:
and when the frosting of the outdoor unit is judged, judging the state of the indoor unit.
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 judging the state of the indoor unit, wherein the state comprises the state of no person when the indoor unit is turned off or turned on;
the ratio calculation module is used for acquiring the capacity capacities of the indoor unit and the outdoor unit after the judgment state, calculating the sum of the capacity capacities of the indoor unit which is turned off and the indoor unit which is turned on without people, and calculating the ratio of the sum of the 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.
The multi-online defrosting method, the multi-online defrosting device, the multi-online air conditioning system and the readable storage medium, provided by the embodiment of the invention, are used for analyzing the states of the indoor units of the multi-online air conditioning system, representing the actual use condition of the multi-online air conditioning system by the capacity ratio related to the states of the indoor units, and performing 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 a user is ensured.
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, judging the state of the indoor unit;
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 states 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 a user is guaranteed.
When defrosting is performed in the multi-split air conditioning system of the present embodiment, first, the states of the indoor units are determined respectively. In order to improve the accuracy of subsequent analysis, the operating states of the indoor units in this embodiment include a shutdown state, an unattended startup state, and a manned startup state. The shutdown state refers to the current shutdown of the indoor unit; the starting-up unmanned state means that the indoor unit is started up currently, but no user exists in a working area corresponding to the indoor unit currently (for example, no user exists in a room where the indoor unit is installed currently); the start-up unattended state indicates that the indoor unit is currently started up, and a working area corresponding to the indoor unit currently has a user (for example, a room in which the indoor unit is installed currently has a user).
Further, the step S10 includes:
detecting whether an indoor unit is started;
in this embodiment, for the determination of the state of the indoor unit, it is first detected whether the indoor unit is turned on.
If the indoor unit is started, detecting whether a person exists in a working area corresponding to the started indoor unit through a preset detector;
in this embodiment, if a certain indoor unit is not turned on, it may be determined that the indoor unit is currently turned off. If a certain indoor unit is started, whether a person exists in a working area corresponding to the started indoor unit is detected through a preset detector (for example, whether a person exists in a room where the started indoor unit is installed is detected); the detection of whether a person is in the working area can be realized in various ways. For example, acquiring an image of the working area through a camera, then performing human body recognition on the image, and if the human body image is recognized in the image, determining that people exist in the working area; if no human body image is identified in the image, it is determined that no human body is in the working area. For another example, an infrared imaging device may acquire an infrared image of the working area, and then perform human body recognition on the infrared image to determine whether there is a person in the working area. Of course, other methods may be used for the detection and determination.
If the corresponding working area of the started indoor unit is occupied, judging that the state of the started indoor unit is the occupied state when the indoor unit is started;
and if no person exists in the corresponding working area of the started indoor unit, judging that the state of the started indoor unit is the state of no person.
In this embodiment, if someone is detected in a working area corresponding to a certain started indoor unit, it is determined that the started indoor unit is currently in a started someone state; if the situation that people exist in a working area corresponding to a certain started indoor unit is detected, the current starting state of the started indoor unit can be determined to be the starting unmanned state. The state of each indoor unit can be judged in the above mode; in practice, the above-mentioned determination steps may be adjusted, for example, to detect whether there is a person in the working area corresponding to the indoor unit, then to detect whether the indoor unit is powered on, and then to determine the state of the indoor unit according to whether there is a person and whether the indoor unit is powered on, or to adopt other determination methods.
Step S20, acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the capacity capacities of the indoor unit which is turned off and the indoor unit which is turned on without people, and calculating the ratio of the sum of the capacity capacities to the capacity of the outdoor unit;
in this embodiment, when the 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 state of each indoor unit, and the actual use condition can be represented by parameters related to the capacity of the indoor unit and the capacity of 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 in the shutdown state and all indoor units in the startup person state, and then adding the capacity of all indoor units in the shutdown state and the capacity of all indoor units in the startup person state to obtain the sum of the capacity capacities; when the sum of the capacity is obtained, the ratio of the sum of the capacity to the capacity of the outdoor unit 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 the indoor units (including power-off and power-on) which are not used by people are, the larger the capacity proportion of the indoor units which are not used by people is; when the specific gravity is high to a certain degree, the defrosting operation can be finished only by the indoor unit which is not used by people.
For example, an indoor unit in a shutdown state includes three units, i.e., a, b, and c, and the corresponding capacity capacities thereof are respectively denoted as Ea, Eb, and Ec; the indoor unit in the state of no person when the indoor unit is started comprises d and e, and the corresponding capacity capacities are Ed and Ee respectively; the outdoor unit comprises h, and the capacity corresponding to the h is Eh; then the sum of the capacity capacities of the indoor units in the shutdown state and the indoor units in the unattended startup state E1 can be calculated, that is, E1 ═ Ea + Eb + Ec + Ed + Ee, and then the ratio X of the sum of the capacity capacities E1 to the capacity Eh of the outdoor unit is calculated as E1/Eh, 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 capacity capacities (of the indoor units in the shutdown state and the indoor units in the unmanned startup state) to 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 each indoor unit is controlled to enter a corresponding defrosting mode 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 up) 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 this embodiment, the state of the indoor unit is determined, where the state includes no one at shutdown or startup; acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the capacity capacities of the indoor unit which is turned off and the indoor unit which is not turned on, and calculating the ratio of the sum of the capacity capacities 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 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 a user 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 comfortable defrosting is mainly performed through an indoor unit in a power-off state and an indoor unit in a power-on unmanned state, namely, the defrosting is mainly performed through the indoor unit which is not used by people, so that the heating capacity of the indoor unit which is used by people (in the power-on manned state) 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 the indoor units which are not used by people is enough or not according to the size relationship of the indoor units and the outdoor unit, 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 determined that the number of indoor units that are currently not used by people is sufficient, and at this time, each indoor unit may be controlled to perform comfort defrosting, mainly by performing defrosting through an indoor unit in an off state and an indoor unit in an on-state that is not used by people, that is, mainly by performing defrosting through an indoor unit that is not used by people, so as to ensure the heating capability of an indoor unit that is used by people (in an on-state that people are present).
Further, the step of controlling the indoor unit to perform comfort defrosting comprises:
and controlling the electronic expansion valves of the shutdown indoor unit and the unmanned indoor unit to be started to be opened, and controlling the electronic expansion valves of the indoor units with people to be started to be closed.
In this embodiment, during comfort defrosting, defrosting is mainly performed by the indoor unit in the shutdown state and the indoor unit in the unattended startup state, and at this time, the electronic expansion valves of the indoor units in the shutdown state and the indoor units in the unattended startup state are controlled to be opened (that is, the electronic expansion valves of the indoor units that are not used by people are opened), and the electronic expansion valves of the indoor units that are manned in startup state are controlled to be closed (that is, the electronic expansion valves of the indoor units that are manned in startup state are closed), so that the heating capacity of the indoor units that are manned in startup state is ensured as much as possible while defrosting. Of course, for the indoor unit which is shut down and the indoor unit which is not started by people, the fan can be started, the electric auxiliary heat can be adopted, or the electronic expansion valve is arranged at a larger angle, so that the defrosting speed is increased.
And step S33, if the ratio is smaller than the preset threshold, controlling the 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 determined that the number of indoor units that are not currently used by people is small (or that there are more indoor units in use), at this time, in order to ensure the defrosting speed, in addition to the indoor units that are not used by people, it is necessary to defrost indoor units that are used by people (that is, people are started up), and the defrosting mode at this time may be called conventional defrosting, that is, defrosting is performed by as many indoor units as possible.
Further, the step of controlling the indoor unit to perform conventional defrosting includes:
and controlling the opening of an electronic expansion valve of the indoor unit.
In the embodiment, when the conventional defrosting is performed, the aim is to perform the defrosting through as many indoor units as possible; at this time, the electronic expansion valves of all the indoor units (including a shutdown state, an unattended startup state and a manned startup state) can be controlled to open, so that defrosting is performed through all the indoor units, the defrosting speed is increased, and the defrosting time is shortened. Certainly, when the electronic expansion valves of all indoor units are controlled to be opened, the opening degree of the electronic expansion valves can be set to be smaller, so that the large fluctuation of the indoor temperature is avoided; the opening degrees of the indoor units in different states may be different, for example, the opening degrees of the electronic expansion valves of the indoor units in the shutdown state and the startup unattended state are larger, and the opening degree of the electronic expansion valve of the indoor unit in the startup attended state is smaller.
Further, the step of controlling the indoor unit to perform conventional defrosting further includes:
respectively detecting the number of users in the working area corresponding to each indoor unit with people on the start;
determining the indoor unit with a person in the starting up corresponding to the working area with the largest number of users as a target indoor unit;
and controlling the electronic expansion valves of the target indoor unit to be closed, and controlling the electronic expansion valves of all the indoor units except the target indoor unit to be opened.
In practice, for a plurality of indoor units with a person-on-start state, the number of people in the corresponding working area may be different, and during conventional defrosting, the number of users in the working area corresponding to each indoor unit with a person-on-start state can be detected respectively, and then the indoor unit corresponding to the working area with the largest number of users is taken as a target indoor unit; for the detection of the number of users in the working area, a camera (certainly, an external independent camera may also be used) may be arranged in the indoor unit to obtain an area image of the working area, and then the working area image is subjected to user identification, and the number of users is determined according to the identification result, or determined in a thermal imaging analysis manner. After the target indoor unit is determined, controlling the electronic expansion valve of the target indoor unit to be closed, and controlling the electronic expansion valves of all indoor units except the target indoor unit to be opened. By the mode, the defrosting speed can be improved, the heating effect of the working area (room) with the largest number of users can be ensured, and the heat comfort experience of the users can be ensured as much as possible.
In addition, for a plurality of indoor units with a person-on-start state, the heating priorities of the corresponding working areas can be distinguished, different heating priorities, such as a high priority and a low priority, are set for the indoor units with the person-on-start state, when the conventional defrosting is carried out, only the electronic expansion valve of the indoor unit with the person-on-start state with the high priority is closed, and for the indoor units with the person-on-start state, the indoor units with the person-on-start state and the indoor units with the person-off state with the low priority, the corresponding electronic expansion valves can be opened, so that the heating capacity of the indoor units with the person-on-start state with the high priority is ensured in the defrosting process.
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, judging the on-off state of the indoor unit.
In this embodiment, when it is determined that the outdoor unit is frosted, the step of determining the on/off state of the indoor unit may be performed, and then the subsequent defrosting process may be performed according to the state of the indoor unit.
Through the mode, the frosting state of the outdoor unit can be detected, and the step of judging the on-off 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 used for judging the state of the indoor unit, wherein the state comprises the state of no person when the indoor unit is turned off or turned on;
the ratio calculation module 20 is configured to obtain capacity capacities of the indoor unit and the outdoor unit after the state is determined, calculate a sum of capacity capacities of the indoor unit that is turned off and the indoor unit that is turned on without any person, and calculate a ratio between the sum of 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 state further includes that someone is started, and the first defrosting unit is specifically used for controlling the opening of the electronic expansion valves of the indoor units which are shut down and the indoor units which are not started up and controlling the closing of the electronic expansion valves of the indoor units which are started up and the someone is started up.
Further, the state further includes that someone is started up, and the second defrosting unit is specifically used for controlling the opening of the electronic expansion valve of each indoor unit.
Further, the states further include the number of users who have started up the indoor unit, and the second defrosting unit is further specifically used for respectively detecting the number of users in the working area corresponding to each indoor unit where people have started up; determining the indoor unit with a person in the starting up corresponding to the working area with the largest number of users as a target indoor unit; and controlling the electronic expansion valves of the target indoor unit to be closed, and controlling the electronic expansion valves of all the indoor units except the target indoor unit to be opened.
Further, the state further includes a person at the time of starting up, and the state determination module 10 includes:
the first detection unit is used for respectively detecting whether each indoor unit is started up or not;
the second detection unit is used for detecting whether a person exists in a working area corresponding to the started indoor unit through a preset detector if the indoor unit is started;
the first judgment unit is used for judging that the state of the started indoor unit is that someone is started if someone is in a corresponding working area of the started indoor unit;
and the second judgment unit is used for judging that the started indoor unit is in the state of no person when the working area corresponding to the started indoor unit is free of the person.
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 determining module 10 is further configured to determine the states of the indoor units when it is determined that the outdoor unit is frosted.
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 (7)

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:
judging the state of the indoor unit, wherein the state comprises power-off state, power-on state and power-on state, and the power-on state comprises no person and a person;
acquiring the capacity capacities of the indoor unit and the outdoor unit after the state judgment, calculating the sum of the capacity capacities of the indoor unit which is turned off and the indoor unit which is not turned on, and calculating the ratio of the sum of the capacity capacities to the capacity of the outdoor unit;
controlling the indoor unit to enter a corresponding defrosting mode according to the ratio;
the step of controlling the indoor unit to enter the corresponding defrosting mode according to the ratio comprises the following steps:
comparing the ratio with a preset threshold value;
if the ratio is smaller than the preset threshold value, controlling the indoor unit to carry out conventional defrosting;
the step of controlling the indoor unit to carry out conventional defrosting comprises the following steps:
controlling the opening of an electronic expansion valve of an indoor unit, wherein the opening degrees of the indoor units in different states are different, the opening degrees of the electronic expansion valves of the indoor units in a shutdown state and a startup unattended state are larger, and the opening degree of the electronic expansion valve of the indoor unit in a startup manned state is smaller;
if the ratio is larger than or equal to the preset threshold, controlling the indoor unit to defrost in a comfort mode, wherein the step of controlling the indoor unit to defrost in a comfort mode comprises the following steps:
and controlling the electronic expansion valves of the shutdown indoor unit and the unmanned indoor unit to be started to be opened, and controlling the electronic expansion valves of the indoor units with people to be started to be closed.
2. The multi-on-line defrosting method according to claim 1, wherein the status further includes a person who is turned on, and the step of controlling the indoor unit to perform the normal defrosting further includes:
respectively detecting the number of users in the working area corresponding to each indoor unit with people on the start;
determining the indoor unit with a person in the starting up corresponding to the working area with the largest number of users as a target indoor unit;
and controlling the electronic expansion valves of the target indoor unit to be closed, and controlling the electronic expansion valves of all the indoor units except the target indoor unit to be opened.
3. The multiple on-line frost management method of claim 1, wherein the status further includes a person who is turned on, and the determining the status of the indoor unit includes:
detecting whether an indoor unit is started;
if the indoor unit is started, detecting whether a person exists in a working area corresponding to the started indoor unit through a preset detector;
if the corresponding working area of the started indoor unit is occupied, judging that the state of the started indoor unit is the occupied state when the indoor unit is started;
and if no person exists in the corresponding working area of the started indoor unit, judging that the state of the started indoor unit is the state of no person.
4. The multi-connected defrosting method according to any one of claims 1 to 3, further comprising:
monitoring the frosting state of the outdoor unit;
the step of determining the state of the indoor unit includes:
and when the frosting of the outdoor unit is judged, judging the state of the indoor unit.
5. A multi-connected defrosting device, characterized in that the multi-connected defrosting device comprises:
the state judgment module is used for judging the state of the indoor unit, wherein the state comprises shutdown, no person when the indoor unit is started and person when the indoor unit is started;
the ratio calculation module is used for acquiring the capacity capacities of the indoor unit and the outdoor unit after the judgment state, calculating the sum of the capacity capacities of the indoor unit which is turned off and the indoor unit which is turned on without people, and calculating the ratio of the sum of the capacity capacities to the capacity of the outdoor unit;
the defrosting control module is used for controlling the indoor unit to enter a corresponding defrosting mode according to the ratio;
the defrosting control module comprises:
the size comparison unit is used for comparing the ratio with a preset threshold value;
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;
the second defrosting unit is specifically used for controlling the opening of the electronic expansion valve of each indoor unit, wherein the opening degrees of the indoor units in different states are different, the opening degrees of the electronic expansion valves of the indoor units in a shutdown state and a startup unattended state are larger, and the opening degree of the electronic expansion valve of the indoor unit in a startup manned state is smaller;
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;
the first defrosting unit is specifically used for controlling the opening of electronic expansion valves of the shutdown indoor unit and the startup unmanned indoor unit and controlling the closing of the electronic expansion valves of the startup indoor units.
6. 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 4.
7. 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 4.
CN201910987362.7A 2019-10-16 2019-10-16 Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium Active CN112665116B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910987362.7A CN112665116B (en) 2019-10-16 2019-10-16 Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910987362.7A CN112665116B (en) 2019-10-16 2019-10-16 Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium

Publications (2)

Publication Number Publication Date
CN112665116A CN112665116A (en) 2021-04-16
CN112665116B true CN112665116B (en) 2022-04-12

Family

ID=75400452

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910987362.7A Active CN112665116B (en) 2019-10-16 2019-10-16 Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium

Country Status (1)

Country Link
CN (1) CN112665116B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113531767B (en) * 2021-07-26 2022-08-12 珠海格力电器股份有限公司 Control method and device of air conditioning system and air conditioning system
CN114216212A (en) * 2021-12-10 2022-03-22 珠海格力电器股份有限公司 Heating and defrosting control method of multi-split air conditioner and multi-split air conditioner
CN114413416B (en) * 2022-01-26 2023-04-25 宁波奥克斯电气股份有限公司 Defrosting control method for multi-split air conditioner, storage medium and multi-split air conditioner
CN114963452B (en) * 2022-05-31 2023-11-14 宁波奥克斯电气股份有限公司 Air conditioner defrosting method and device, multi-connected air conditioner system and storage medium

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1123036A (en) * 1997-07-04 1999-01-26 Fujitsu General Ltd Air conditioner
JP2012102926A (en) * 2010-11-09 2012-05-31 Daikin Industries Ltd Air conditioner
CN104101127A (en) * 2013-04-01 2014-10-15 珠海格力电器股份有限公司 VRV (Varied Refrigerant Volume) air conditioning system and VRV air conditioning defrosting control method
CN109028467A (en) * 2018-09-27 2018-12-18 奥克斯空调股份有限公司 A kind of air conditioner intelligent Defrost method and device
CN109458698A (en) * 2018-11-08 2019-03-12 珠海格力电器股份有限公司 Air-conditioning defrosting method and air-conditioning
CN109458699A (en) * 2018-11-08 2019-03-12 珠海格力电器股份有限公司 Multi-connected machine defrosting method, device, storage medium, computer equipment and air-conditioning

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100587369C (en) * 2007-07-25 2010-02-03 宁波奥克斯空调有限公司 Intelligent defrosting method for air conditioner
JP5078681B2 (en) * 2007-10-03 2012-11-21 パナソニック株式会社 Air conditioner
JP2012077942A (en) * 2010-09-30 2012-04-19 Panasonic Corp Air conditioner
JP2012102927A (en) * 2010-11-09 2012-05-31 Daikin Industries Ltd Air conditioning system
EP2757326B1 (en) * 2011-09-13 2020-04-22 Mitsubishi Electric Corporation Refrigeration and air-conditioning device
JP6085255B2 (en) * 2012-01-24 2017-02-22 三菱電機株式会社 Air conditioner
JP6005304B2 (en) * 2014-05-12 2016-10-12 三菱電機株式会社 Ventilation control device and ventilation control method
KR101707617B1 (en) * 2015-09-30 2017-02-21 삼성전자주식회사 Air conditioner and method of controlling the same
CN105423505A (en) * 2015-12-15 2016-03-23 珠海格力电器股份有限公司 Air conditioner and control method thereof
WO2017134807A1 (en) * 2016-02-05 2017-08-10 三菱電機株式会社 Air conditioner
CN105890114A (en) * 2016-04-12 2016-08-24 青岛海尔空调电子有限公司 Control method and device for outdoor unit defrosting
CN107449099B (en) * 2017-06-20 2020-05-29 青岛海尔空调器有限总公司 Control method and control device of air conditioner
CN109506401A (en) * 2018-11-09 2019-03-22 珠海格力电器股份有限公司 A kind of defrosting control method, system and the storage medium of multi-connected machine heat pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1123036A (en) * 1997-07-04 1999-01-26 Fujitsu General Ltd Air conditioner
JP2012102926A (en) * 2010-11-09 2012-05-31 Daikin Industries Ltd Air conditioner
CN104101127A (en) * 2013-04-01 2014-10-15 珠海格力电器股份有限公司 VRV (Varied Refrigerant Volume) air conditioning system and VRV air conditioning defrosting control method
CN109028467A (en) * 2018-09-27 2018-12-18 奥克斯空调股份有限公司 A kind of air conditioner intelligent Defrost method and device
CN109458698A (en) * 2018-11-08 2019-03-12 珠海格力电器股份有限公司 Air-conditioning defrosting method and air-conditioning
CN109458699A (en) * 2018-11-08 2019-03-12 珠海格力电器股份有限公司 Multi-connected machine defrosting method, device, storage medium, computer equipment and air-conditioning

Also Published As

Publication number Publication date
CN112665116A (en) 2021-04-16

Similar Documents

Publication Publication Date Title
CN112665116B (en) Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium
CN112665117B (en) Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium
CN108061365B (en) Control method of radiation air conditioner, radiation air conditioner and storage medium
CN110173823B (en) Operation control method, control device, air conditioner, and computer-readable storage medium
CN107131611A (en) Air conditioner defrosting control method
CN107084499A (en) Air conditioner defrosting control method
CN109458699B (en) Multi-online defrosting method and device, storage medium, computer equipment and air conditioner
KR101502096B1 (en) Control method of air conditioner
CN113203184B (en) Defrosting control method, air conditioner and computer readable storage medium
CN109708262B (en) Multimedia classroom air conditioner control method
CN109579213B (en) Air conditioner temperature control method, storage device and air conditioner
CN110440403A (en) A kind of dehumidification control method adapting to a variety of weather conditions, device and air-conditioning equipment
CN107300240A (en) Air conditioner defrosting control method
CN112567183A (en) Air conditioner, control device, air conditioning method, and program
US10830471B2 (en) Heating control method and device for air conditioner
CN109869809A (en) Dehumanization method, device, air conditioner and the computer readable storage medium of air conditioner
CN107120796A (en) Air conditioner defrosting control method
CN109114736A (en) Air conditioning control method, air-conditioning and computer readable storage medium
CN109269022A (en) Control method, air conditioner and the storage medium of air conditioner
CN115218453A (en) Air conditioner and air conditioner control method
CN109373528A (en) Heat exchanger control method and device, air conditioner, computer equipment, storage medium
CN112665115B (en) Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium
CN107289576A (en) Air conditioner defrosting control method
JP6430758B2 (en) Cooling system
CN109780687A (en) Air conditioner booting pre-blowing wind control method, control system, air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant