CN108562021B - Dehumidification control method and device for indoor unit of air conditioner and air conditioner - Google Patents

Dehumidification control method and device for indoor unit of air conditioner and air conditioner Download PDF

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CN108562021B
CN108562021B CN201810380687.4A CN201810380687A CN108562021B CN 108562021 B CN108562021 B CN 108562021B CN 201810380687 A CN201810380687 A CN 201810380687A CN 108562021 B CN108562021 B CN 108562021B
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indoor unit
expansion valve
type
electronic expansion
state
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CN108562021A (en
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张三艳
刘敏
李亚军
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

Abstract

The embodiment of the invention discloses a dehumidification control method and device for an indoor unit of an air conditioner and the air conditioner, relates to the field of manufacturing of household appliances, and can realize independent control of indoor temperature and humidity and improve dehumidification performance of the indoor unit. The dehumidification control method of the air-conditioning indoor unit comprises the steps of obtaining the capacity of at least one first-type indoor unit and the capacity of at least one second-type indoor unit, and grouping the at least one first-type indoor unit; the sum of the capacities of each group of first-class indoor units is smaller than the sum of the capacities of at least one second-class indoor unit, the first-class indoor units are used for dehumidification, and the second-class indoor units are used for heating; controlling each group of first-type indoor units to sequentially operate for a preset time period according to a first state; the first state includes: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; and controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work. The embodiment of the invention is applied to an air conditioning system.

Description

Dehumidification control method and device for indoor unit of air conditioner and air conditioner
Technical Field
The embodiment of the invention relates to the field of manufacturing of household appliances, in particular to a dehumidification control method and device for an indoor unit of an air conditioner and the air conditioner.
Background
In recent years, China makes provisions for indoor comfortable environment control: the indoor temperature in summer is 24-28 ℃, and the relative humidity is 40-65%; the indoor temperature in winter is 18-22 ℃, and the relative humidity is 40-60%. The excessive air humidity not only affects the living environment of people, but also has close influence on the preservation of substances, certain processing technological processes in industrial production and the like.
The existing air conditioner generally utilizes the refrigeration of the air conditioner to lead the water vapor in the indoor air to reach the dew point temperature and condense into water drops, then the water drops flow to a water receiving tray along the fins of the indoor heat exchanger of the air conditioner and are discharged out of the room through a drain pipe, thereby achieving the dehumidification effect. Although this dehumidification method can remove part of moisture in the air, when a plurality of indoor units are controlled by one outdoor unit and some of the indoor units are in a heating state, if separate dehumidification is needed like a storage room, a toilet, a kitchen, etc., the dehumidification performance is not sufficient due to the problem that the capacities of the heating indoor units and the dehumidifying indoor units are not matched, and the dehumidification effect cannot be ensured.
Disclosure of Invention
Embodiments of the present invention provide a dehumidification control method and apparatus for an indoor unit of an air conditioner, and an air conditioner, which can implement independent control of indoor temperature and humidity when capacities of a heating indoor unit and a dehumidification indoor unit are not matched, and improve dehumidification performance of the dehumidification indoor unit.
In a first aspect, a dehumidification control method for an indoor unit of an air conditioner is provided, and the method is applied to the air conditioner, wherein the air conditioner comprises an outdoor unit and at least two indoor units; the indoor unit includes: the system comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with a first electronic expansion valve, and the second heat exchanger is connected with a second electronic expansion valve; the method comprises the following steps: the method comprises the steps of obtaining the capacity of at least one first-class indoor unit and the capacity of at least one second-class indoor unit, and grouping the at least one first-class indoor unit, wherein the sum of the capacities of each group of first-class indoor units is smaller than the sum of the capacities of the at least one second-class indoor unit, the first-class indoor units are used for dehumidification, and the second-class indoor units are used for heating; controlling each group of first-type indoor units to sequentially operate for a preset time period according to a first state; the first state includes: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; and controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work.
In the method, the indoor units are divided into a first type indoor unit and a second type indoor unit, wherein the first type indoor unit is used for dehumidification, and the second type indoor unit is used for heating. The method comprises the steps of respectively obtaining the capacities of a first type of indoor unit and a second type of indoor unit, grouping the first type of indoor units, and enabling the sum of the capacities of each group of the first type of indoor units to be smaller than the sum of the capacities of the second type of indoor units. Then controlling each group of first type indoor units to operate for a preset time period according to a first state; wherein the first state comprises: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; and controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work. Therefore, when the air conditioner consists of one outdoor unit and a plurality of indoor units, if part of the indoor units are in a heating operation state and the other part of the indoor units are in a dehumidifying operation state, for example, when independent dehumidification is needed in a storage room, a bathroom, a kitchen and the like, the problem of insufficient dehumidifying performance caused by the fact that the capacities of the indoor units in the heating operation state and the dehumidifying operation state are not matched can be solved, the dehumidifying effect is guaranteed, and the user experience is improved.
In a second aspect, a dehumidification control device is provided, which is applied to an air conditioner, wherein the air conditioner comprises an outdoor unit and at least two indoor units; the indoor unit includes: the system comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with a first electronic expansion valve, and the second heat exchanger is connected with a second electronic expansion valve; the device comprises an information acquisition module, an information processing module and a control module. The information processing module is used for grouping the at least one first-class indoor unit, wherein the sum of the capacities of each group of first-class indoor units is smaller than the sum of the capacities of the at least one second-class indoor unit, the first-class indoor units are used for dehumidification, and the second-class indoor units are used for heating. The control module is used for controlling each group of first-type indoor units to sequentially operate for a preset time period according to a first state; the first state includes: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; and controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work.
In a third aspect, a dehumidification control apparatus is provided, which includes a communication interface, a processor, a memory, and a bus; the memory is used for storing computer-executable instructions, the processor is connected with the memory through the bus, and when the dehumidification control device is operated, the processor executes the computer-executable instructions stored in the memory so as to enable the dehumidification control device to execute the method provided by the first aspect.
In a fourth aspect, there is provided a computer storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect as described above.
In a fifth aspect, an air conditioner is provided, which includes the above dehumidification control device.
It can be understood that any one of the dehumidification control devices, the computer storage medium, or the air conditioner provided above is used to execute the method according to the first aspect provided above, and therefore, the beneficial effects achieved by the dehumidification control device refer to the method according to the first aspect above and the beneficial effects of the solutions in the following detailed description, which are not described herein again.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a dehumidification control method for an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a dehumidification control method for an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a dehumidification control apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a dehumidification control apparatus according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, the state is developing heat recovery technology vigorously, the use amount of a heat recovery system in the air conditioning industry will be more and more, when an air conditioner is composed of an indoor unit and a plurality of indoor units, if part of the indoor units are in a heating operation state, and other parts of the indoor units are in a dehumidifying operation state, for example, a storage room, a toilet, a kitchen and the like need independent dehumidification, the problem that the capacity of the indoor units in the heating operation state is not matched with that of the indoor units in the dehumidifying operation state, the heat generated by the indoor units in the heating operation state is used for dehumidifying the indoor units in the dehumidifying operation state to dehumidify the room in need of dehumidification can be solved, but the heat waste is greatly reduced, but the dehumidifying performance is insufficient due to the fact that the capacity of the indoor units in the heating operation state is not matched with that of the indoor units in.
The embodiment of the invention provides a dehumidification control method of an air conditioner indoor unit, which is applied to an air conditioner, as shown in fig. 1, wherein the air conditioner comprises an outdoor unit 10 and at least two indoor units 20; the indoor unit 20 includes: the system comprises a first heat exchanger 201 and a second heat exchanger 202, wherein the first heat exchanger 201 is connected with a first electronic expansion valve K1, and the second heat exchanger 202 is connected with a second electronic expansion valve K2; the method comprises the following steps, as shown in fig. 2:
101. the method comprises the steps of obtaining the capacity of at least one first-class indoor unit and the capacity of at least one second-class indoor unit, and grouping the at least one first-class indoor unit, wherein the sum of the capacities of each group of first-class indoor units is smaller than the sum of the capacities of the at least one second-class indoor unit, the first-class indoor units are used for dehumidification, and the second-class indoor units are used for heating.
Exemplarily, step 101 specifically includes: sequencing at least one first type of indoor unit according to the address; grouping at least one first-class indoor unit according to the sequencing result and a preset condition, wherein the addresses of each first-class indoor unit are continuous, and the preset condition comprises the following steps:
Figure BDA0001640845790000041
wherein the content of the first and second substances,
Figure BDA0001640845790000042
for the capacity of each group of first-type indoor unitsSumming; sigma Heat _ HP is the sum of the capacities of at least one second type of indoor unit; kDH_CAPIs a capacity control coefficient.
102. And controlling each group of first-type indoor units to sequentially operate for a preset time period according to the first state.
The first state includes: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; and controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work. When the first type indoor unit operates in a first state, the opening degree of the first electronic expansion valve is controlled according to a preset rule, wherein the preset rule comprises the following steps: when the first type indoor unit is switched from the second state to the first state, the opening evr (n) of the first electronic expansion valve is constant [ pls ]; when the first type of indoor unit operates in a first state, the opening degree of the first electronic expansion valve is calculated according to the superheat degree of the first heat exchanger; the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
103. And controlling each group of first-type indoor units except the first-type indoor units which operate according to the first state to operate according to the second state within a preset time period.
The second state includes: controlling the first electronic expansion valve to be closed, and enabling the first heat exchanger not to work; and controlling the opening of the second electronic expansion valve to perform the control of preventing the refrigerant from staying on the second heat exchanger. When the first type indoor unit operates in the second state, controlling the opening degree EVI (n) of the first electronic expansion valve to be 40[ pls ]; the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
It should be noted that, when the ratio of the first type indoor units to the second type indoor units changes, the first type indoor units are reordered and grouped according to the steps shown in fig. 2, and then the operation state of the first type indoor units is controlled again according to the new groups, that is, step 101 and step 103 are executed again.
For better understanding, the dehumidification method in the embodiment of the present invention is exemplarily explained, and as shown in fig. 3, the capacity control coefficient K is setDH_CAPSet to 1.5 and the predetermined time period T is set to 10 min. The indoor units shown in fig. 3, which collectively include the address numbers 1, 2, 3, 4, 5, 6, 7, and 8, have the corresponding capacities: no. 1 indoor unitThe capacity of the indoor unit of (1) is 71, the capacity of the indoor unit of No. 2 is 18, the capacity corresponding to the indoor unit of No. 3 is 28, the capacity of the indoor unit of No. 4 is 71, the capacity of the indoor unit of No. 5 is 56, the capacity of the indoor unit of No. 6 is 36, the capacity of the indoor unit of No. 7 is 18, and the capacity of the indoor unit of No. 8 is 18. The indoor units No. 2, 4, 5, 6, 7 and 8 are first-class indoor units (DH for short); 1. the indoor unit 3 is a second type of indoor unit (heating for short). In addition, the operating states of the first type of indoor unit are divided into a first state (i.e., state a) and a second state (i.e., state B), and now, according to the predetermined condition:
Figure BDA0001640845790000051
the first type of indoor units are divided into 5 groups in total, and the groups are respectively as follows: (2) (4), (5), (6, 7) and (8). The No. 2 indoor unit is used as a first group of indoor units which are operated in the A state, the operation states of No. 4, 5, 6, 7 and 8 indoor units are in the B state, when the indoor machine No. 2 runs from 0min to 10min, the running state of the indoor machine No. 4 is switched to be the A state, the running state of the indoor machines No. 2, 5, 6, 7 and 8 is switched to be the B state, when the indoor machine No. 4 operates for 20min from 10min, the operation state of the indoor machine No. 5 is switched to be the A state, the operation state of the indoor machines No. 2, 4, 6, 7 and 8 is switched to be the B state, when the No. 5 indoor machine runs for 30min from 20min, the running state of the No. 6 and No. 7 indoor machines is switched to be the A state, the running state of the No. 2, No. 4, No. 5 and No. 8 indoor machines is switched to be the B state, when the No. 6 and No. 7 indoor units operate for 40min from 30min, the operation state of the No. 8 indoor unit is switched to the A state, and the operation state of the No. 2, 4, 5, 6 and No. 7 indoor units is switched to the B state. In this way, all rooms needing dehumidification complete dehumidification in a preset period, and secondary dehumidification and more can be carried out as required. When the operation state of the indoor unit changes, for example: 2. indoor units No. 4, 5, 6 and 7 are switched into first-type indoor units; 1. the No. 3 and No. 8 indoor units are switched to the second type indoor units. Then, the indoor units 2, 4, 5, 6 and 7 can be regrouped according to the preset conditions, and the control of the operation state of the first type indoor unit can be restarted according to the steps.
In the method, the indoor units are divided into a first type indoor unit and a second type indoor unit, wherein the first type indoor unit is used for dehumidification, and the second type indoor unit is used for heating. And respectively acquiring the capacities of the first type of indoor unit and the second type of indoor unit. And grouping the first-class indoor units, wherein the sum of the capacities of each group of the first-class indoor units is smaller than the sum of the capacities of the second-class indoor units. Then, each group of first-type indoor units is controlled to operate for a preset time period according to the first state, and the other groups operate according to the second state. Wherein the first state comprises: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work; the second state includes: controlling the first electronic expansion valve to be closed, and enabling the first heat exchanger not to work; and controlling the opening of the second electronic expansion valve to perform the control of preventing the refrigerant from staying on the second heat exchanger. Therefore, when the air conditioner consists of one outdoor unit and a plurality of indoor units, if part of the indoor units are in a heating operation state and the other part of the indoor units are in a dehumidifying operation state, for example, when independent dehumidification is needed in a storage room, a bathroom, a kitchen and the like, the problem of insufficient dehumidifying performance caused by the fact that the capacities of the indoor units in the heating operation state and the dehumidifying operation state are not matched can be solved, the dehumidifying effect is guaranteed, and the user experience is improved.
The embodiment of the invention provides a dehumidification control device, which is applied to an air conditioner, wherein the air conditioner comprises an outdoor unit and at least two indoor units; the indoor unit includes: the system comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with a first electronic expansion valve, and the second heat exchanger is connected with a second electronic expansion valve; as shown in fig. 4, the apparatus includes an information acquisition module 41, an information processing module 42, and a control module 43;
the information processing module 42 is configured to group the at least one first type of indoor unit, where a sum of capacities of each group of first type of indoor units is smaller than a sum of capacities of the at least one second type of indoor units, where the first type of indoor units are used for dehumidification, and the second type of indoor units are used for heating;
the control module 43 is configured to control each group of first type indoor units to sequentially operate for a predetermined time period according to a first state; the first state includes: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; and controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work.
In an exemplary aspect, the control module 43 is further configured to: controlling each group of first-type indoor units except the first-type indoor units which operate according to the first state to operate according to a second state within a preset time period, wherein the second state comprises the following steps: controlling the first electronic expansion valve to be closed, and enabling the first heat exchanger not to work; and controlling the opening of the second electronic expansion valve to perform the control of preventing the refrigerant from staying on the second heat exchanger.
In an exemplary scenario, the information processing module 42 is specifically configured to: sorting the addresses of at least one first-class indoor unit acquired by the information acquisition module 41; grouping at least one first-class indoor unit according to the sequencing result and a preset condition, wherein the addresses of each first-class indoor unit are continuous, and the preset condition comprises the following steps:
Figure BDA0001640845790000071
wherein the content of the first and second substances,
Figure BDA0001640845790000072
the sum of the capacities of each group of the first type of indoor units; sigma Heat _ HP is the sum of the capacities of at least one second type of indoor unit; kDH_CAPIs a capacity control coefficient.
In an exemplary scheme, the control module 43 is further configured to control the opening degree of the first electronic expansion valve according to a predetermined rule when the first type of indoor unit operates in the first state, where the predetermined rule includes: when the first type indoor unit is switched from the second state to the first state, the opening evr (n) of the first electronic expansion valve is constant [ pls ]; when the first type of indoor unit operates in a first state, the opening degree of the first electronic expansion valve is calculated according to the superheat degree of the first heat exchanger; the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
In an exemplary scheme, the control module 43 is further configured to control the opening degree evi (n) of the first electronic expansion valve to be 40[ pls ]; the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
The description of the functional module corresponding to the embodiment of the apparatus may directly refer to the content related to the embodiment of the method and the technical effect achieved, and is not described in detail again.
In the case of an integrated module, the dehumidification control apparatus includes: the device comprises a storage unit, a processing unit and an interface unit. The processing unit is used for controlling and managing the action of the dehumidification control device, for example, the processing unit is used for supporting the terminal device to execute the process 101 and 103 in fig. 2. The interface unit is used for supporting information interaction between the dehumidification control device and other devices, such as interaction of control signaling between the dehumidification control device and the indoor unit. And the storage unit is used for storing the program codes and the data of the dehumidification control device.
For example, the processing unit is a processor, the storage unit is a memory, and the interface unit is a communication interface. The dehumidification control apparatus shown in fig. 5 includes a communication interface 501, a processor 502, a memory 503, and a bus 504, and the communication interface 501 and the processor 502 are connected to the memory 503 through the bus 504.
The processor 502 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an Application-Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to control the execution of programs in accordance with the teachings of the present disclosure.
The Memory 503 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
The memory 503 is used for storing application program codes for executing the scheme of the application, and the processor 502 controls the execution. The communication interface 501 is used for information interaction with the indoor unit. The processor 502 is configured to execute application program code stored in the memory 503 to implement the methods described in the embodiments of the present application.
The embodiment of the invention provides an air conditioner, which comprises the dehumidification control device. Further, a computing storage medium (or media) is also provided, comprising instructions which, when executed, perform the operations of the method in the above embodiments.
Additionally, a computer program product is also provided, comprising the above-described computing storage medium (or media).
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. 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 and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (9)

1. A dehumidification control method of an indoor unit of an air conditioner is characterized by being applied to the air conditioner, wherein the air conditioner comprises an outdoor unit and at least two indoor units; the indoor unit includes: the system comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with a first electronic expansion valve, and the second heat exchanger is connected with a second electronic expansion valve; the method comprises the following steps:
the method comprises the steps of obtaining the capacity of at least one first-class indoor unit and the capacity of at least one second-class indoor unit, and grouping the at least one first-class indoor unit, wherein the sum of the capacities of each group of first-class indoor units is smaller than the sum of the capacities of the at least one second-class indoor unit, the first-class indoor units are used for dehumidifying, and the second-class indoor units are used for heating;
controlling each group of the first type indoor units to sequentially operate for a preset time period according to a first state; the first state includes: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work;
and within the preset time period, controlling each group of the first-type indoor units except the first-type indoor units which operate according to the first state to operate according to a second state, wherein the second state comprises the following steps: controlling the first electronic expansion valve to be closed, and enabling the first heat exchanger not to work; and controlling the second electronic expansion valve to open, and performing refrigerant residence prevention control on the second heat exchanger.
2. The method according to claim 1, wherein the grouping of the at least one first type of indoor unit, wherein the sum of the capacities of each group of the first type of indoor units is smaller than the sum of the capacities of the at least one second type of indoor units, comprises:
sequencing the at least one first type of indoor unit according to the address;
grouping the at least one first-class indoor unit according to the sequencing result and a preset condition, wherein the addresses of the first-class indoor units in each group are continuous, and the preset condition comprises that:
Figure FDA0002409512460000011
wherein the content of the first and second substances,
Figure FDA0002409512460000012
the sum of the capacities of each group of the first type of indoor units; sigma Heat _ HP is the sum of the capacities of the at least one second type indoor unit; kDH_CAPIs a capacity control coefficient.
3. The method according to claim 1, wherein when the first type of indoor unit operates in the first state, the method further comprises:
controlling the opening degree of the first electronic expansion valve according to a predetermined rule, wherein the predetermined rule comprises: when the first type indoor unit is switched from the second state to the first state, an opening evr (n) of the first electronic expansion valve is equal to a constant [ pls ]; when the first type of indoor unit operates in a first state, calculating the opening degree of the first electronic expansion valve according to the superheat degree of the first heat exchanger;
the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
4. The method according to claim 1, wherein when the first type indoor unit operates in the second state, the method further comprises:
controlling an opening degree evi (n) of the first electronic expansion valve to 40[ pls ];
the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
5. A dehumidification control device is applied to an air conditioner, wherein the air conditioner comprises an outdoor unit and at least two indoor units; the indoor unit includes: the system comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with a first electronic expansion valve, and the second heat exchanger is connected with a second electronic expansion valve; the dehumidification control device comprises an information acquisition module, an information processing module and a control module;
the information acquisition module is used for acquiring the capacity of at least one first-type indoor unit and the capacity of at least one second-type indoor unit;
the information processing module is used for grouping the at least one first-class indoor unit, wherein the sum of the capacities of each group of first-class indoor units is smaller than the sum of the capacities of the at least one second-class indoor unit, the first-class indoor units are used for dehumidification, and the second-class indoor units are used for heating;
the control module is used for controlling each group of the first type of indoor units to sequentially operate for a preset time period according to a first state; the first state includes: controlling the first electronic expansion valve to open, and cooling and dehumidifying by the first heat exchanger; controlling the second electronic expansion valve to be closed, and enabling the second heat exchanger not to work;
the control module is further configured to control each group of the first type of indoor units, other than the first type of indoor units, which operate according to the first state, to operate according to a second state within the predetermined time period, where the second state includes: controlling the first electronic expansion valve to be closed, and enabling the first heat exchanger not to work; and controlling the second electronic expansion valve to open, and performing refrigerant residence prevention control on the second heat exchanger.
6. The apparatus according to claim 5, wherein the information processing module is specifically configured to sort the addresses of the at least one first-class indoor unit obtained by the information acquisition module; grouping the at least one first-class indoor unit according to the sequencing result and a preset condition, wherein the addresses of the first-class indoor units in each group are continuous, and the preset condition comprises that:
Figure FDA0002409512460000031
wherein the content of the first and second substances,
Figure FDA0002409512460000032
the sum of the capacities of each group of the first type of indoor units; sigma Heat _ HP is the sum of the capacities of the at least one second type indoor unit; kDH_CAPIs a capacity control coefficient.
7. The apparatus of claim 5, wherein the control module is further configured to control the opening degree of the first electronic expansion valve according to a predetermined rule when the first type of indoor unit operates in the first state, and the predetermined rule comprises: when the first type indoor unit is switched from the second state to the first state, an opening evr (n) of the first electronic expansion valve is equal to a constant [ pls ]; when the first type of indoor unit operates in a first state, calculating the opening degree of the first electronic expansion valve according to the superheat degree of the first heat exchanger; the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
8. The apparatus according to claim 5, wherein the control module is further configured to control an opening degree evi (n) of the first electronic expansion valve to 40[ pls ] when the first type of indoor unit operates in the second state; the opening degree evi (n) of the second electronic expansion valve is controlled to 40[ pls ].
9. An air conditioner characterized by comprising the dehumidification control apparatus according to any one of claims 5 to 8.
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