CN106885406B - Air conditioner control method, device and system - Google Patents

Air conditioner control method, device and system Download PDF

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Publication number
CN106885406B
CN106885406B CN201710247042.9A CN201710247042A CN106885406B CN 106885406 B CN106885406 B CN 106885406B CN 201710247042 A CN201710247042 A CN 201710247042A CN 106885406 B CN106885406 B CN 106885406B
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China
Prior art keywords
heat storage
storage device
heat
air conditioner
control valve
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Active
Application number
CN201710247042.9A
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Chinese (zh)
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CN106885406A (en
Inventor
于伦宇
邓忠文
倪毅
唐杰
刘志辉
张景博
魏代武
李华兴
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201710247042.9A priority Critical patent/CN106885406B/en
Publication of CN106885406A publication Critical patent/CN106885406A/en
Application granted granted Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24—Storage receiver heat
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application discloses an air conditioner control method, device and system. The system comprises: the air conditioner comprises an indoor unit, an outdoor unit, heat storage equipment and an air conditioner control device, wherein the heat storage equipment is connected with the outdoor unit of the air conditioner through a pipeline; the heat storage equipment is connected with the air conditioner control device; the heat storage equipment is connected to an air conditioner communication network, and the heat storage equipment is in communication connection with an indoor unit and an outdoor unit of the air conditioner. When the air conditioner is in a heating mode, heat is brought to the indoor unit and the heat storage equipment from the outside; and in the defrosting process of the air conditioning unit, heat is transferred from the heat storage equipment back to the outdoor unit to achieve defrosting. The application solves the problem that the indoor temperature is obviously reduced due to the fact that heat is extracted from the indoor side when an air conditioner is used for defrosting. The multi-split air conditioner has a heat storage function; the indoor temperature does not obviously drop during heating and defrosting; the heat storage device does not influence the refrigeration of the air conditioner.

Description

Air conditioner control method, device and system
Technical Field
The present application relates to the field of air conditioner control, and in particular, to a method, an apparatus, and a system for controlling an air conditioner.
Background
The multi-connected air conditioning unit is an air conditioning system which is widely applied at present. Big data analysis shows that the average environmental temperature in winter is lower than 5 ℃ in northeast, north China, east China, southwest and northwest, and the outdoor environmental temperature is lower than 5 ℃, so that the air conditioner is very easy to frost, the performance is rapidly attenuated, and the heating capacity is insufficient.
Disclosure of Invention
In view of the technical problems, the application provides an air conditioner control method, an air conditioner control device and an air conditioner control system, which comprise heat storage equipment, and solve the problem that when an air conditioner is defrosted, heat is taken from the indoor side to cause the indoor temperature to be obviously reduced.
According to an aspect of the present application, there is provided an air conditioner control method including:
judging whether the heat storage equipment is in a fault state or not;
if the heat storage equipment is not in a fault state, acquiring the running state of the air conditioner;
and controlling the heat storage equipment to be in a corresponding working state according to the running state of the air conditioner.
In one embodiment of the present application, the controlling the heat storage device to be in the corresponding operation state according to the operation state of the air conditioner includes:
and under the condition that the air conditioner is in a heating mode, controlling a heat storage device control valve to be opened, and starting heat storage of the heat storage device, wherein the heat storage device control valve is arranged on a connecting pipeline of the outdoor unit and the heat storage device.
In one embodiment of the present application, the controlling the heat storage device to be in the corresponding operation state according to the operation state of the air conditioner includes:
acquiring current heat accumulation amount under the condition that the heat accumulation equipment is in a heat accumulation state;
judging whether the current heat accumulation amount reaches a preset heat accumulation amount or not;
and adjusting the heat storage device control valve to a predetermined opening degree in the case where the current stored heat amount reaches a predetermined stored heat amount.
In one embodiment of the present application, the predetermined heat storage amount is 80% -100% of the maximum heat storage amount of the heat storage device; the preset opening is 0.1% -2% of the maximum opening of the control valve of the heat storage device.
In one embodiment of the present application, the controlling the heat storage device to be in the corresponding operation state according to the operation state of the air conditioner includes:
under the condition that the air conditioner is in a defrosting mode, controlling a heat storage device control valve to be opened to the maximum, and transmitting heat release back to the outdoor unit to achieve the defrosting purpose, wherein the heat storage device control valve is arranged on a connecting pipeline of the outdoor unit and the heat storage device;
and the indoor unit is instructed to close the indoor unit control valve, wherein the indoor unit control valve is arranged on a connecting pipeline of the outdoor unit and the indoor unit.
In one embodiment of the present application, the controlling the heat storage device to be in the corresponding operation state according to the operation state of the air conditioner includes:
and under the condition that the air conditioner is in a refrigerating mode, controlling the heat storage equipment control valve to be closed, wherein the heat storage equipment control valve is arranged on a connecting pipeline of the outdoor unit and the heat storage equipment.
In one embodiment of the application, the method further comprises:
if the heat storage equipment is in a fault state, controlling a heat storage equipment control valve to be closed, wherein the heat storage equipment control valve is arranged on a connecting pipeline of the outdoor unit and the heat storage equipment;
the heat storage device is instructed to send fault information to the outdoor unit so that the outdoor unit can display the fault information;
and under the condition that the air conditioner is in a defrosting mode, the indoor unit is instructed to release heat and transmit the heat back to the outdoor unit so as to achieve the defrosting purpose.
In one embodiment of the present application, the determining whether the thermal storage device is in a failure state includes:
if the heat storage equipment continuously does not receive the information of the outdoor unit main board in a preset time period, judging that the heat storage equipment has communication faults, and the heat storage equipment is in a fault state;
and if the short circuit or open circuit of the inlet pipe or the outlet pipe of the heat storage equipment is detected, judging that the heat storage equipment is in a fault state.
According to another aspect of the present application, there is provided an air conditioner control device including a failure determination module, a unit state acquisition module, and a control module, wherein:
the fault judging module is used for judging whether the heat storage equipment is in a fault state or not;
the unit state acquisition module is used for acquiring the running state of the air conditioner under the condition that the fault judgment module judges that the heat storage equipment is not in a fault state;
and the control module is used for controlling the heat storage equipment to be in a corresponding working state according to the running state of the air conditioner.
In one embodiment of the present application, the control module is configured to control the heat storage device control valve to be opened and the heat storage device to start heat storage when the air conditioner is in a heating mode, where the heat storage device control valve is disposed on a connection line between the outdoor unit and the heat storage device.
In one embodiment of the present application, the control module includes an accumulated heat acquiring unit, an accumulated heat judging unit, and a valve opening adjusting unit, wherein:
the heat storage quantity acquisition unit is used for acquiring the current heat storage quantity under the condition that the heat storage equipment is in a heat storage state;
the heat accumulation amount judging unit is used for judging whether the current heat accumulation amount reaches a preset heat accumulation amount or not;
and a valve opening adjustment unit for adjusting the thermal storage device control valve to a predetermined opening in the case where the current stored heat amount reaches a predetermined stored heat amount.
In one embodiment of the present application, the predetermined heat storage amount is 80% -100% of the maximum heat storage amount of the heat storage device; the preset opening is 0.1% -2% of the maximum opening of the control valve of the heat storage device.
In one embodiment of the application, the control module is used for controlling the heat storage device control valve to be opened to the maximum under the condition that the air conditioner is in a defrosting mode, and transmitting heat release back to the outdoor unit to achieve the defrosting purpose, wherein the heat storage device control valve is arranged on a connecting pipeline of the outdoor unit and the heat storage device; and instructs the indoor unit to close the indoor unit control valve, wherein the indoor unit control valve is provided on a connection pipe between the outdoor unit and the indoor unit.
In one embodiment of the present application, the control module is configured to control the heat storage device control valve to be closed when the air conditioner is in a cooling mode, where the heat storage device control valve is disposed on a connection line between the outdoor unit and the heat storage device.
In one embodiment of the present application, the apparatus further comprises a fault information sending module, wherein:
the control module is also used for controlling the closing of a heat storage device control valve under the condition that the heat storage device is in a fault state, wherein the heat storage device control valve is arranged on a connecting pipeline of the outdoor unit and the heat storage device;
and the fault information sending module is used for indicating the heat storage equipment to send fault information to the outdoor unit under the condition that the heat storage equipment is in a fault state so as to display the fault information by the outdoor unit.
In one embodiment of the present application, the fault determination module includes a communication fault detection unit and a line fault detection unit, wherein:
the communication fault detection unit is used for judging that the heat storage equipment has communication faults when the heat storage equipment continuously does not receive the information of the main board of the outdoor unit within a preset time period, and the heat storage equipment is in a fault state;
and the pipeline fault detection unit is used for judging that the heat storage equipment has pipeline faults under the condition that the short circuit or open circuit of the inlet pipe or the outlet pipe of the heat storage equipment is detected, and the heat storage equipment is in a fault state.
According to another aspect of the present application, there is provided an air conditioner control system including an indoor unit, an outdoor unit, a heat storage device, and an air conditioner control apparatus according to any one of the above embodiments.
In one embodiment of the present application, the heat storage device is connected to an outdoor unit of the air conditioner through a pipe; the heat storage equipment is connected with the air conditioner control device; the heat storage equipment is connected to an air conditioner communication network, and the heat storage equipment is in communication connection with an indoor unit and an outdoor unit of the air conditioner.
According to the application, the multi-split air conditioner has a heat storage function by adding the heat storage equipment; the indoor temperature does not obviously drop during heating and defrosting; the heat storage device does not influence the refrigeration of the air conditioner.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a first embodiment of an air conditioning control system according to the present application.
Fig. 2 is a schematic diagram of a second embodiment of an air conditioning control system according to the present application.
Fig. 3 is a schematic diagram of piping connection of a third embodiment of the air conditioning control system according to the present application.
Fig. 4a to 4d are schematic views of a thermal storage device according to an embodiment of the present application.
Fig. 5 is a schematic view of a first embodiment of an air conditioner control device according to the present application.
FIG. 6 is a schematic diagram of a control module according to an embodiment of the application.
Fig. 7 is a schematic diagram of a second embodiment of an air conditioner control device according to the present application.
Fig. 8 is a schematic diagram of a first embodiment of an air conditioner control method according to the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic diagram of a first embodiment of an air conditioning control system according to the present application. As shown in fig. 1, the air conditioning control system includes an indoor unit 1, an outdoor unit 4, a heat storage device 2, and an air conditioning control apparatus 3, wherein:
the heat storage device 2 is connected with an outdoor unit 4 of the air conditioner through a pipeline.
The thermal storage device 2 is provided on the inner side.
The heat storage device 2 is connected to the air conditioning control apparatus 3.
The heat storage device 2 is connected to an air conditioner communication network, and the heat storage device 2 is in communication connection with the indoor unit 1 and the outdoor unit 4 of the air conditioner.
In one embodiment of the present application, as shown in fig. 1, the air conditioner control system may further include a heat storage device control valve 21 and an indoor unit control valve 11, wherein:
the heat storage device control valve 21 is provided on a connection line between the outdoor unit 4 and the heat storage device 2.
The indoor unit control valve 11 is provided on a connection line between the outdoor unit 4 and the indoor unit 1.
The air conditioning control device 3 is electrically connected to the heat storage apparatus control valve 21.
The air conditioner control device 3 is used for acquiring the running state of the air conditioner; and controls the heat storage device 2 to be in a corresponding operating state according to the operating state of the air conditioner.
Specifically, the air conditioner control device 3 is configured to control the opening of the heat storage device control valve 21 when the air conditioner is in the heating mode, and the heat storage device 2 starts heat storage; the indoor unit 1 normally controls the indoor unit control valve 11.
The air conditioner control device 3 is configured to control the heat storage device control valve 21 to be opened to the maximum value when the air conditioner is in a defrosting mode (defrosting state), that is, when a defrosting standard sent from the air conditioner outdoor unit 4 is received, and transfer heat release back to the outdoor unit 4 to achieve defrosting. Meanwhile, the indoor unit 11 is instructed to close the indoor unit control valve 11, heat is prevented from flowing back to the outside, and the indoor temperature is ensured not to be obviously reduced.
The air conditioner control device 3 is configured to control the heat storage device control valve 21 to be closed (closed) when the air conditioner is in a cooling mode, that is, after receiving a cooling signal, by the air conditioner control device 3, without generating a pipeline transmission loss, and the current unit works as a normal unit for cooling.
Based on the air conditioner control system provided by the embodiment of the application, when the air conditioner is in a heating mode, heat is brought to the indoor unit and the heat storage equipment from the outside; and in the defrosting process of the air conditioning unit, heat is transferred from the heat storage equipment back to the outdoor unit to achieve defrosting. Therefore, the application not only avoids the problems of air conditioner performance attenuation and insufficient heating quantity caused by air conditioner frosting, but also solves the problem of obvious reduction of indoor temperature caused by heat extraction from the indoor side during air conditioner frosting. The multi-split air conditioner has a heat storage function; the indoor temperature does not obviously drop during heating and defrosting; the heat storage device does not influence the refrigeration of the air conditioner.
In one embodiment of the present application, the heat storage apparatus control valve 21 and the indoor unit control valve 11 may be implemented as electronic expansion valves.
In one embodiment of the present application, the air conditioner control device 3 may also be configured to acquire the current stored heat in the case where the heat storage apparatus 2 is in the heat storage state; judging whether the current heat accumulation amount reaches a preset heat accumulation amount or not; in the case where the current stored heat amount reaches the predetermined stored heat amount, the heat storage device control valve 21 is adjusted to a predetermined small opening degree.
The predetermined stored heat amount and the predetermined opening degree are specified as empirical values.
In one embodiment of the present application, the predetermined heat storage amount is 80% -100% of the maximum heat storage amount of the heat storage device 2; the predetermined small opening is 0.1% -2% of the maximum opening of the heat storage device control valve 21.
According to the embodiment of the application, when the heat storage reaches a certain proportion of the maximum heat storage quantity, the heat storage equipment controls the electronic expansion valve of the heat storage equipment to be opened to a small degree, so that on one hand, the normal heating effect in an air conditioner room is not affected, and on the other hand, the heat storage material is not excessively stored to cause certain loss, wherein the loss refers to the change of the molecular structure of the heat storage material, and the hardening heat release and softening heat storage capacity of the heat storage material are reduced.
The above-described embodiment of the present application does not directly close the heat storage device control valve 21 when the heat storage reaches a certain proportion of the maximum heat storage amount, but adjusts the heat storage device control valve 21 to a predetermined small opening degree. This is because if the electronic expansion valve is directly closed, the heat storage device will have a heat loss; the opening degree is set to be a certain degree so as to keep the heat absorption capacity of the heat storage equipment to be more than or equal to the loss capacity.
In one embodiment of the present application, the air conditioner control device 3 may also be configured to determine whether the heat storage apparatus 2 is in a failure state; if the heat storage device 2 is not in the fault state, acquiring the running state of the air conditioner, and then executing the operation of controlling the heat storage device 2 to be in the corresponding working state according to the running state of the air conditioner; if the heat storage device 2 is in a failure state, the heat storage device control valve 21 is controlled to close, and the heat storage device 2 is instructed to transmit failure information to the outdoor unit 4 so that the outdoor unit 4 displays the failure information.
The air conditioner control device 3 may also be used to instruct the indoor unit 1 to transfer heat release back to the outdoor unit 4 for defrosting purposes in the case where the air conditioner is in defrosting mode and the heat storage device 2 is in a failure state.
The faults comprise communication faults, electronic expansion valve faults, pipeline faults and the like.
In one embodiment of the present application, the air conditioner control device 3 may specifically be configured to determine that the heat storage device 2 has a communication failure if the heat storage device 2 has not received the information about the main board of the outdoor unit 4 for a predetermined period of time, and that the heat storage device 2 is in a failure state.
In another embodiment of the present application, the air conditioner control system may further include an inlet pipe bulb and an outlet pipe bulb, wherein:
the pipe inlet temperature sensing bulb is arranged at the pipe inlet of the heat storage equipment 2 to detect the pipe inlet temperature;
the outlet pipe temperature sensing bulb is arranged at the outlet pipe of the heat storage equipment 2 to detect the outlet pipe temperature;
the air conditioner control device 3 is respectively and electrically connected with the inlet pipe temperature sensing bulb and the outlet pipe temperature sensing bulb.
The air conditioner control device 3 is used for judging that the heat storage equipment 2 is in a pipeline fault state when the heat storage equipment 2 is detected to have a short circuit or open circuit in the inlet pipe or the outlet pipe by the inlet pipe temperature sensing bulb and/or the outlet pipe temperature sensing bulb; thereafter, the signed failure processing is performed.
The heat storage equipment of the embodiment of the application always has fault detection judgment when in operation, and the air conditioner control device directly closes the electronic expansion valve of the heat storage equipment as long as the fault of the heat storage equipment is detected, so that the unit does not generate extra pipeline transmission loss, and the air conditioner unit is restored into an air conditioning system without the heat storage equipment.
In the above embodiment of the present application, the air conditioner may be a multi-split air conditioner or a home air conditioner.
Fig. 2 is a schematic diagram of a second embodiment of an air conditioning control system according to the present application. As shown in fig. 2, the air conditioner control system includes a plurality of indoor units 1, an outdoor unit 4, a heat storage device 2, an air conditioner control device 3 (not shown), an indoor unit control valve 11, a heat storage device control valve 21, and a four-way valve 41 of the multi-split air conditioner, wherein:
the multi-split air conditioner includes a plurality of indoor units 1 and outdoor units 4.
The indoor unit control valve 11 is provided on a trunk line where the plurality of indoor units 1 are connected in parallel, and can simultaneously control the connection and disconnection of the plurality of indoor units 1 and the outdoor unit 4.
The heat storage device 2 is provided in parallel with the indoor unit 1, both of which are connected to the same port of the four-way valve 41.
As shown in fig. 2, the multi-unit heating mode brings heat from the outside to the indoor unit and the heat storage device; in the defrosting process of the air conditioning unit, if no heat storage equipment exists, heat is transferred back to the outdoor unit from the indoor unit to achieve the defrosting purpose, and if the heat storage equipment exists, the heat is transferred back to the outdoor unit from the heat storage module to achieve the defrosting purpose.
Fig. 3 is a schematic diagram of piping connection of a third embodiment of the air conditioning control system according to the present application. The embodiment of fig. 3 further gives a detailed structural illustration of the outdoor unit 4, compared to the embodiment of fig. 2. In the embodiment of fig. 3, the multi-split air conditioner includes two indoor units and an outdoor unit.
In the embodiment of fig. 3, the indoor unit includes an indoor unit control valve 11 and an indoor unit heat exchanger 12.
The indoor unit control valves 11 are two, and the two indoor unit control valves 11 are respectively arranged on the connecting pipelines of the two indoor units and the outdoor unit.
The outdoor unit 4 includes four-way valve 41, subcooler 42, pressure regulating valve 43, outdoor heat exchanger 44, high-pressure sensor 45, compressor 46, high-pressure switch 47, low-pressure sensor 48, oil separator 49, solenoid valve 50, small valve 51, large valve 52, and the like.
The heat storage device 2 is arranged in parallel with the indoor unit 1, and one end of the heat storage device 2 and one end of the indoor unit 1 are connected with the same port of the four-way valve 41; the other ends of the heat storage device 2 and the indoor unit 1 are connected to a subcooler 42.
The control principle of the air conditioner control device 3 in the embodiment of fig. 2 and 3 on the heat storage apparatus 2 and the multi-split air conditioner is the same as that in the embodiment of fig. 1, and will not be described in detail here.
The structure and function of the heat storage apparatus 2 and the air conditioning control device 3 in the above-described embodiment of the application will be further described below by way of specific examples.
Fig. 4a to 4d are schematic views of a thermal storage device according to an embodiment of the present application. As shown in fig. 2, the thermal storage device 2 includes a thermal storage housing 23, a heat exchange tube 22, and a thermal storage material, wherein:
the heat exchange tubes 22 and the heat storage material are disposed within the heat storage housing 23.
The heat exchange tube 22 is surrounded by the heat storage material.
In the heat storage state, the heat storage material absorbs heat from the heat exchange tube 22; in the exothermic state, the heat storage material transfers heat into the heat exchange tubes 22.
The above-described embodiments of the present application can thus realize that heat is brought from the outside to the indoor unit and the heat storage device when the air conditioner is in the heating mode; and in the defrosting process of the air conditioning unit, heat is transferred from the heat storage equipment back to the outdoor unit to achieve defrosting. Therefore, the multi-split air conditioner has a heat storage function; the indoor temperature does not obviously drop during heating and defrosting.
In one embodiment of the present application, the thermal storage device 2 may further comprise a sponge, wherein: the sponge is wrapped outside the heat storage housing 23.
Therefore, the embodiment of the application can further improve the heat storage capacity of the heat storage equipment and ensure that the heat stored by the heat storage material does not flow outwards.
In one embodiment of the present application, the thermal storage device 2 includes a plurality of sets of heat exchange tubes 22 and a plurality of sets of thermal storage material, wherein: each group of heat exchange tubes 22 is individually wrapped with a corresponding group of heat storage material.
The heat exchange tubes are separated from a large pipeline connected with the external machine and are all refrigerant channels. Can be considered as one tube, two divided into tubes for enhanced heat storage capacity. For example, during heating, the refrigerant flows in from the left side of the heat exchange tube and flows out from the right side; when defrosting, the refrigerant flows in from the right side and flows out from the left side.
The embodiment of the application adopts a plurality of groups of heat exchange tubes and a plurality of groups of heat storage materials, thereby further improving the heat storage capacity of the heat storage equipment.
In one embodiment of the present application, the control board of the air conditioner control device 3 is provided in an electrical box, which is fixed outside the heat storage apparatus 2. Because the inside cold and hot exchange of heat accumulation casing, probably there is the air hydraulic pressure, so can not place the casing inside with the control panel, the heat accumulation casing can wrap up with the sponge, prevents that the condensate water that the cold and hot transmission process produced from getting into the electrical apparatus box and influencing the control panel work.
Fig. 5 is a schematic view of a first embodiment of an air conditioner control device according to the present application. As shown in fig. 5, the air conditioner control device 3 may include a failure determination module 31, a unit state acquisition module 32, and a control module 33, wherein:
the failure determination module 31 is configured to determine whether the thermal storage device 2 is in a failure state.
The unit state obtaining module 32 is configured to obtain an operation state of the air conditioner when the failure judging module 31 judges that the heat storage device 2 is not in the failure state.
The control module 33 is used for controlling the heat storage device 2 to be in a corresponding working state according to the running state of the air conditioner.
In one embodiment of the present application, the control module 33 is configured to control the heat storage device control valve 21 to open and the heat storage device 2 to start heat storage in the case where the air conditioner is in the heating mode.
In one embodiment of the present application, the control module 33 is configured to control the heat storage device control valve 21 to be opened to the maximum value when the air conditioner is in the defrosting mode, and transmit the heat release back to the outdoor unit 4 for defrosting; and instructs the indoor unit 1 to close the indoor unit 1 control valve.
In one embodiment of the present application, the control module 33 is configured to control the thermal storage device control valve 21 to close when the air conditioner is in the cooling mode.
Based on the air conditioner control device provided by the embodiment of the application, when the air conditioner is in a heating mode, heat is brought to the indoor unit and the heat storage equipment from the outside; and in the defrosting process of the air conditioning unit, heat is transferred from the heat storage equipment back to the outdoor unit to achieve defrosting. Therefore, the application not only avoids the problems of air conditioner performance attenuation and insufficient heating quantity caused by air conditioner frosting, but also solves the problem of obvious reduction of indoor temperature caused by heat extraction from the indoor side during air conditioner frosting. The multi-split air conditioner has a heat storage function; the indoor temperature does not obviously drop during heating and defrosting; the heat storage device does not influence the refrigeration of the air conditioner.
FIG. 6 is a schematic diagram of a control module according to an embodiment of the application. As shown in fig. 6, the control module 33 of the embodiment of fig. 5 may include an accumulated heat acquisition unit 331, an accumulated heat determination unit 332, and a valve opening adjustment unit 333, wherein:
the stored heat amount acquisition unit 331 is configured to acquire the current stored heat amount in the case where the heat storage device 2 is in the heat storage state.
And an accumulated heat amount judging unit 332 for judging whether or not the current accumulated heat amount reaches a predetermined accumulated heat amount.
The valve opening adjustment unit 333 is configured to adjust the thermal storage device control valve 21 to a predetermined opening in the case where the current stored heat amount reaches a predetermined stored heat amount.
In one embodiment of the present application, the predetermined heat storage amount is 80% -100% of the maximum heat storage amount of the heat storage device 2; the predetermined opening is 0.1% -2% of the maximum opening of the heat storage device control valve 21.
According to the embodiment of the application, when the heat storage reaches a certain proportion of the maximum heat storage quantity, the heat storage equipment controls the electronic expansion valve of the heat storage equipment to be opened to a small degree, so that on one hand, the normal heating effect in an air conditioner room is not affected, and on the other hand, the heat storage material is not excessively stored to cause certain loss, wherein the loss refers to the change of the molecular structure of the heat storage material, and the hardening heat release and softening heat storage capacity of the heat storage material are reduced.
The above-described embodiment of the present application does not directly close the heat storage device control valve 21 when the heat storage reaches a certain proportion of the maximum heat storage amount, but adjusts the heat storage device control valve 21 to a predetermined small opening degree. This is because if the electronic expansion valve is directly closed, the heat storage device will have a heat loss; the opening degree is set to be a certain degree so as to keep the heat absorption capacity of the heat storage equipment to be more than or equal to the loss capacity.
Fig. 7 is a schematic diagram of a second embodiment of an air conditioner control device according to the present application. In comparison with the fig. 5 embodiment, in the fig. 7 embodiment, the apparatus may further include a fault information sending module 34, where:
the control module 33 may also be configured to control the heat storage device control valve 21 to be closed in the case where the heat storage device 2 is in a failure state, where the heat storage device control valve 21 is disposed on a connection line between the outdoor unit 4 and the heat storage device 2;
the failure information sending module 34 is configured to instruct the heat storage device 2 to send failure information to the outdoor unit 4 so that the outdoor unit 4 displays the failure information when the heat storage device 2 is in a failure state.
In one embodiment of the present application, the fault determination module 31 may include a communication fault detection unit and a pipe fault detection unit, wherein:
and a communication failure detection unit for determining that the heat storage device 2 has a communication failure and that the heat storage device 2 is in a failure state when the heat storage device 2 has not received the main board information of the outdoor unit 4 for a predetermined period of time.
And the pipeline fault detection unit is used for judging that the heat storage equipment 2 has pipeline faults and the heat storage equipment 2 is in a fault state under the condition that the short circuit or open circuit of the inlet pipe or the outlet pipe of the heat storage equipment 2 is detected.
The heat storage equipment of the embodiment of the application always has fault detection judgment when in operation, and the air conditioner control device directly closes the electronic expansion valve of the heat storage equipment as long as the fault of the heat storage equipment is detected, so that the unit does not generate extra pipeline transmission loss, and the air conditioner unit is restored into an air conditioning system without the heat storage equipment.
Fig. 8 is a schematic diagram of a first embodiment of an air conditioner control method according to the present application. Preferably, the present embodiment may be performed by the air conditioner control device of the present application. As shown in fig. 8, the method may further include:
in step 81, it is determined whether the thermal storage device 2 is in a failure state.
In one embodiment of the application, the fault includes a communication fault, an electronic expansion valve fault, a pipeline fault, and the like.
In one embodiment of the present application, step 81 may include:
in step 811, if the heat storage device 2 has not received the outdoor unit 4 main board information for a predetermined period of time, it is determined that the heat storage device 2 has a communication failure and the heat storage device 2 is in a failure state.
Step 812, if it is detected that the heat storage device 2 is short-circuited or open-circuited in the inlet pipe or the outlet pipe, it is determined that the heat storage device 2 is in a fault state.
In step 82, if the heat storage apparatus 2 is not in a failure state, the operation state of the air conditioner is acquired.
Step 83, controlling the heat storage device 2 to be in a corresponding working state according to the running state of the air conditioner.
In one embodiment of the present application, step 83 may include:
in step 831, when the air conditioner is in the heating mode, the heat storage device control valve 21 is controlled to be opened, and the heat storage device 2 starts to store heat, wherein the heat storage device control valve 21 is disposed on a connection line between the outdoor unit 4 and the heat storage device 2.
Step 832, when the air conditioner is in the defrosting mode, controlling the heat storage device control valve 21 to be opened to the maximum, and transmitting heat release back to the outdoor unit 4 to achieve defrosting, wherein the heat storage device control valve 21 is arranged on a connecting pipeline between the outdoor unit 4 and the heat storage device 2; the indoor unit 1 is instructed to close the indoor unit 1 control valve, wherein the indoor unit 1 control valve is provided on the connection line between the outdoor unit 4 and the indoor unit 1.
In step 833, when the air conditioner is in the cooling mode, the heat storage device control valve 21 is controlled to be closed, wherein the heat storage device control valve 21 is disposed on a connection line between the outdoor unit 4 and the heat storage device 2.
Based on the air conditioner control method provided by the embodiment of the application, when the air conditioner is in a heating mode, heat is brought to the indoor unit and the heat storage equipment from the outside; and in the defrosting process of the air conditioning unit, heat is transferred from the heat storage equipment back to the outdoor unit to achieve defrosting. Therefore, the application not only avoids the problems of air conditioner performance attenuation and insufficient heating quantity caused by air conditioner frosting, but also solves the problem of obvious reduction of indoor temperature caused by heat extraction from the indoor side during air conditioner frosting. The multi-split air conditioner has a heat storage function; the indoor temperature does not obviously drop during heating and defrosting; the heat storage device does not influence the refrigeration of the air conditioner.
In one embodiment of the present application, the controlling the thermal storage device 2 to be in the corresponding operation state according to the operation state of the air conditioner includes:
acquiring the current stored heat in the case where the heat storage device 2 is in a heat storage state;
judging whether the current heat accumulation amount reaches a preset heat accumulation amount or not;
in the case where the current stored heat amount reaches the predetermined stored heat amount, the heat storage device control valve 21 is adjusted to the predetermined opening degree.
In one embodiment of the present application, the predetermined heat storage amount is 80% -100% of the maximum heat storage amount of the heat storage device 2; the predetermined opening is 0.1% -2% of the maximum opening of the heat storage device control valve 21.
According to the embodiment of the application, when the heat storage reaches a certain proportion of the maximum heat storage quantity, the heat storage equipment controls the electronic expansion valve of the heat storage equipment to be opened to a small degree, so that on one hand, the normal heating effect in an air conditioner room is not affected, and on the other hand, the heat storage material is not excessively stored to cause certain loss, wherein the loss refers to the change of the molecular structure of the heat storage material, and the hardening heat release and softening heat storage capacity of the heat storage material are reduced.
The above-described embodiment of the present application does not directly close the heat storage device control valve 21 when the heat storage reaches a certain proportion of the maximum heat storage amount, but adjusts the heat storage device control valve 21 to a predetermined small opening degree. This is because if the electronic expansion valve is directly closed, the heat storage device will have a heat loss; the opening degree is set to be a certain degree so as to keep the heat absorption capacity of the heat storage equipment to be more than or equal to the loss capacity.
In one embodiment of the present application, the controlling the thermal storage device 2 to be in the corresponding operation state according to the operation state of the air conditioner includes:
in one embodiment of the present application, after step 81, the method may further include:
in step 84, if the heat storage device 2 is in a failure state, the heat storage device control valve 21 is controlled to be closed, wherein the heat storage device control valve 21 is disposed on a connection line between the outdoor unit 4 and the heat storage device 2.
Step 85 instructs the heat storage apparatus 2 to transmit failure information to the outdoor unit 4 so that the outdoor unit 4 displays the failure information.
Step 86, in the case that the air conditioner is in the defrosting mode, instructs the indoor unit 1 to transfer heat back to the outdoor unit 4 for defrosting.
The heat storage equipment of the embodiment of the application always has fault detection judgment when in operation, and the air conditioner control device directly closes the electronic expansion valve of the heat storage equipment as long as the fault of the heat storage equipment is detected, so that the unit does not generate extra pipeline transmission loss, and the air conditioner unit is restored into an air conditioning system without the heat storage equipment.
The air conditioner control device described above may be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof for performing the functions described herein.
The present application has been described in detail so far. In order to avoid obscuring the concepts of the application, some details known in the art have not been described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The description of the present application has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the application in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, and to enable others of ordinary skill in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (14)

1. An air conditioner control method, comprising:
judging whether the heat storage device (2) is in a fault state or not;
if the heat storage equipment (2) is not in a fault state, acquiring the running state of the air conditioner;
controlling the heat storage equipment (2) to be in a corresponding working state according to the running state of the air conditioner;
wherein, the controlling the heat storage device (2) to be in the corresponding working state according to the running state of the air conditioner comprises:
acquiring current heat accumulation amount under the condition that the heat accumulation equipment (2) is in a heat accumulation state;
judging whether the current heat accumulation amount reaches a preset heat accumulation amount, wherein the preset heat accumulation amount is 80% -100% of the maximum heat accumulation amount of the heat accumulation device (2);
and when the current heat accumulation amount reaches the preset heat accumulation amount, adjusting the heat accumulation device control valve (21) to a preset opening degree, wherein the preset opening degree is 0.1% -2% of the maximum opening degree of the heat accumulation device control valve (21).
2. The method according to claim 1, wherein said controlling the thermal storage device (2) in the respective operating state according to the operating state of the air conditioner comprises:
when the air conditioner is in a heating mode, the heat storage device control valve (21) is controlled to be opened, and the heat storage device (2) starts to store heat, wherein the heat storage device control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage device (2).
3. The method according to claim 1, wherein said controlling the thermal storage device (2) in the respective operating state according to the operating state of the air conditioner comprises:
under the condition that the air conditioner is in a defrosting mode, a heat storage device control valve (21) is controlled to be opened to the maximum, and heat is released and transferred back to the outdoor unit (4) to achieve the defrosting purpose, wherein the heat storage device control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage device (2);
the indoor unit (1) is instructed to close the indoor unit control valve (11), wherein the indoor unit control valve (11) is arranged on a connecting pipeline of the outdoor unit (4) and the indoor unit (1).
4. The method according to claim 1, wherein said controlling the thermal storage device (2) in the respective operating state according to the operating state of the air conditioner comprises:
and when the air conditioner is in a refrigerating mode, the heat storage device control valve (21) is controlled to be closed, wherein the heat storage device control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage device (2).
5. The method of any one of claims 1-4, further comprising:
if the heat storage equipment (2) is in a fault state, a heat storage equipment control valve (21) is controlled to be closed, wherein the heat storage equipment control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage equipment (2);
the heat storage device (2) is instructed to send fault information to the outdoor unit (4) so that the outdoor unit (4) displays the fault information;
and under the condition that the air conditioner is in a defrosting mode, the indoor unit (1) is instructed to release heat and transmit the heat back to the outdoor unit (4) so as to achieve the defrosting purpose.
6. The method according to any one of claims 1 to 4, wherein the determining whether the thermal storage device (2) is in a fault state comprises:
if the heat storage equipment (2) continuously does not receive the information of the main board of the outdoor unit (4) within a preset time period, judging that the heat storage equipment (2) has communication faults, and the heat storage equipment (2) is in a fault state;
and if the short circuit or the open circuit of the inlet pipe or the outlet pipe of the heat storage device (2) is detected, judging that the heat storage device (2) is in a fault state.
7. An air conditioner control device is characterized by comprising a fault judging module (31), a unit state acquiring module (32) and a control module (33), wherein:
a failure judgment module (31) for judging whether the heat storage device (2) is in a failure state;
the unit state acquisition module (32) is used for acquiring the running state of the air conditioner under the condition that the fault judgment module (31) judges that the heat storage equipment (2) is not in a fault state;
the control module (33) is used for controlling the heat storage equipment (2) to be in a corresponding working state according to the running state of the air conditioner;
wherein the control module (33) includes an accumulated heat acquisition unit (331), an accumulated heat judgment unit (332), and a valve opening adjustment unit (333), wherein:
a stored heat amount acquisition unit (331) for acquiring a current stored heat amount in a case where the heat storage device (2) is in a heat storage state;
an accumulated heat amount judging unit (332) for judging whether or not the current accumulated heat amount reaches a predetermined accumulated heat amount, wherein the predetermined accumulated heat amount is 80% -100% of the maximum accumulated heat amount of the heat accumulating device (2);
and a valve opening degree adjustment unit (333) for adjusting the heat storage device control valve (21) to a predetermined opening degree when the current heat storage amount reaches a predetermined heat storage amount, wherein the predetermined opening degree is 0.1% -2% of the maximum opening degree of the heat storage device control valve (21).
8. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the control module (33) is used for controlling the opening of the heat storage device control valve (21) and starting heat storage of the heat storage device (2) when the air conditioner is in a heating mode, wherein the heat storage device control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage device (2).
9. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the control module (33) is used for controlling the heat storage device control valve (21) to be opened to the maximum under the condition that the air conditioner is in a defrosting mode and transmitting heat release back to the outdoor unit (4) so as to achieve the defrosting purpose, wherein the heat storage device control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage device (2); and instructs the indoor unit (1) to close the indoor unit control valve (11), wherein the indoor unit control valve (11) is provided on a connection line between the outdoor unit (4) and the indoor unit (1).
10. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the control module (33) is used for controlling the closing of the heat storage device control valve (21) under the condition that the air conditioner is in a refrigerating mode, wherein the heat storage device control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage device (2).
11. The apparatus according to any one of claims 7-10, further comprising a fault information transmission module (34), wherein:
the control module (33) is further used for controlling the closing of the heat storage device control valve (21) under the condition that the heat storage device (2) is in a fault state, wherein the heat storage device control valve (21) is arranged on a connecting pipeline of the outdoor unit (4) and the heat storage device (2);
and the fault information sending module (34) is used for instructing the heat storage device (2) to send fault information to the outdoor unit (4) when the heat storage device (2) is in a fault state so that the outdoor unit (4) can display the fault information.
12. The apparatus according to any one of claims 7-10, wherein the fault determination module (31) comprises a communication fault detection unit and a line fault detection unit, wherein:
a communication failure detection unit configured to determine that a communication failure has occurred in the heat storage device (2) when the heat storage device (2) has not received the main board information of the outdoor unit (4) for a predetermined period of time, the heat storage device (2) being in a failure state;
and the pipeline fault detection unit is used for judging that the heat storage equipment (2) has pipeline faults under the condition that the short circuit or open circuit of the inlet pipe or the outlet pipe of the heat storage equipment (2) is detected, and the heat storage equipment (2) is in a fault state.
13. An air conditioning control system, characterized by comprising an indoor unit (1), an outdoor unit (4), a heat storage device (2), and an air conditioning control apparatus (3) according to any one of claims 7 to 10.
14. The system of claim 13, wherein the system further comprises a controller configured to control the controller,
the heat storage device (2) is connected with an outdoor unit (4) of the air conditioner through a pipeline;
the heat storage device (2) is connected with the air conditioner control device (3);
the heat storage device (2) is connected to an air conditioner communication network, and the heat storage device (2) is in communication connection with an indoor unit (1) and an outdoor unit (4) of the air conditioner.
CN201710247042.9A 2017-04-17 2017-04-17 Air conditioner control method, device and system Active CN106885406B (en)

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CN109307354B (en) * 2018-09-17 2023-08-08 珠海格力电器股份有限公司 Air conditioning system and control method thereof
CN109373541B (en) * 2018-12-06 2023-07-25 珠海格力电器股份有限公司 Method and equipment for improving heating capacity of air conditioning system and air conditioning system
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