CN112815414A - Air conditioner, control method of constant frequency air conditioner, and computer-readable storage medium - Google Patents
Air conditioner, control method of constant frequency air conditioner, and computer-readable storage medium Download PDFInfo
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- CN112815414A CN112815414A CN201911041483.9A CN201911041483A CN112815414A CN 112815414 A CN112815414 A CN 112815414A CN 201911041483 A CN201911041483 A CN 201911041483A CN 112815414 A CN112815414 A CN 112815414A
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
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- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- 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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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner, a control method of a fixed-frequency air conditioner and a computer readable storage medium, wherein the air conditioner comprises: the heat exchange loop comprises a compressor, a first heat exchanger, a second heat exchanger, a first pipe for connecting the second heat exchanger and the first heat exchanger, and a second pipe for connecting the second heat exchanger and the compressor; a charge circuit including a charge heat exchanger, a third pipe connecting the charge heat exchanger and the first pipe, and a fourth pipe connecting the charge heat exchanger and the second pipe; and the energy storage piece is provided with an energy storage cavity, and the energy storage heat exchanger is arranged in the energy storage cavity. The technical scheme of the invention can improve the problem of frequent start and stop of the compressor.
Description
Technical Field
The present invention relates to the field of air conditioning, and more particularly, to an air conditioner, a method for controlling a fixed-frequency air conditioner, and a computer-readable storage medium.
Background
The current household constant-frequency air conditioner stops when the temperature of the air conditioner is lower than a set temperature and starts when the temperature of the air conditioner is higher than the set temperature due to no load adjusting capacity of the household constant-frequency air conditioner, so that an air conditioner compressor is easily started and stopped frequently, the power consumption of the air conditioner is increased, and the service life of the compressor is shortened.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, aiming at solving the problem of frequent start and stop of a compressor.
In order to achieve the above object, the present invention provides an air conditioner, comprising:
the heat exchange loop comprises a compressor, a first heat exchanger, a second heat exchanger, a first pipe for connecting the second heat exchanger and the first heat exchanger, and a second pipe for connecting the second heat exchanger and the compressor;
a charge circuit including a charge heat exchanger, a third pipe connecting the charge heat exchanger and the first pipe, and a fourth pipe connecting the charge heat exchanger and the second pipe; and
the energy storage piece is provided with an energy storage cavity, and the energy storage heat exchanger is arranged in the energy storage cavity.
Optionally, the air conditioner further comprises a heat circulation device for sending the heat or cold of the energy storage member into the room.
Alternatively, the heat cycle device is an air blowing device, and the energy accumulating member is provided in a flow path of an air flow formed by the air blowing device.
Optionally, the accumulator circuit further includes a solenoid valve provided in the third piping or the fourth piping.
Optionally, the air conditioner further includes a first throttling device provided in the first pipe and provided in a pipe between a connection of the third pipe and the first heat exchanger;
or the air conditioner also comprises a first throttling device and a second throttling device;
the first throttling device is provided in the third pipe, the second throttling device is provided in the first pipe, and the second throttling device is provided between the second heat exchanger and a connection point between the third pipe and the first pipe; alternatively, the first and second electrodes may be,
the first throttling device is provided in the third pipe, the second throttling device is provided in the first pipe, and the second throttling device is provided between the first heat exchanger and a connection point between the third pipe and the first pipe; alternatively, the first and second electrodes may be,
the first throttling device is provided in the first pipe, and the first throttling device is provided between the first heat exchanger and a connection point of the third pipe and the first pipe, and the second throttling device is provided in the first pipe, and the second throttling device is provided between the second heat exchanger and a connection point of the third pipe and the first pipe.
Optionally, the energy storage member comprises an energy storage tank having the energy storage cavity; alternatively, the first and second electrodes may be,
the energy storage part comprises an energy storage pipe, the energy storage pipe is provided with the energy storage cavity, and the energy storage heat exchanger and the energy storage pipe form an inner and outer sleeve structure.
The invention also provides a control method of the fixed-frequency air conditioner, which comprises the following steps:
acquiring indoor temperature;
in a refrigeration mode, determining that the indoor temperature is less than or equal to a first preset temperature, controlling the compressor to continuously work, and conducting the energy storage loop; and/or the presence of a gas in the gas,
and under the heating mode, determining that the indoor temperature is greater than or equal to a second preset temperature, controlling the compressor to continuously work, and conducting the energy storage loop.
Optionally, in the cooling mode, determining that the indoor temperature is less than or equal to a first preset temperature, controlling the compressor to continuously operate, and after the energy storage circuit is switched on, the method further includes:
determining that the indoor temperature is less than or equal to a third preset temperature, and closing the compressor and the energy storage loop;
wherein the third preset temperature is lower than the first preset temperature;
under the mode of heating, confirm that indoor temperature is greater than or equal to the second and predetermine the temperature, control compressor continuous work still includes after the energy storage loop switches on:
determining that the indoor temperature is greater than or equal to a fourth preset temperature, and closing the compressor and the energy storage loop;
wherein the fourth preset temperature is greater than the second preset temperature.
Optionally, the determining that the indoor temperature is less than or equal to a third preset temperature further includes, after the compressor and the energy storage circuit are turned off:
determining that the indoor temperature is greater than or equal to a fifth preset temperature, and turning on the compressor again;
the step of determining that the indoor temperature is greater than or equal to a fourth preset temperature is included after the compressor and the energy storage loop are closed;
determining that the indoor temperature is less than or equal to a sixth preset temperature, and turning on the compressor again;
the fifth preset temperature is higher than the first preset temperature, and the sixth preset temperature is lower than the second preset temperature.
Optionally, the control method of the fixed-frequency air conditioner further includes the following steps:
in the refrigeration mode, determining that the indoor temperature is higher than a third preset temperature and lower than a fifth preset temperature;
determining the work of the compressor and the conduction of an energy storage loop;
and determining that the conduction time of the energy storage loop reaches the preset time, and closing the compressor and the energy storage loop.
Optionally, the fixed-frequency air conditioner further comprises a heat circulating device for sending the heat or cold of the energy storage part into the room;
the control method of the fixed-frequency air conditioner further comprises the following steps:
in the refrigeration mode, determining that the indoor temperature is greater than or equal to a first preset temperature, and starting a thermal cycle device;
and under the heating mode, determining that the indoor temperature is less than or equal to a second preset temperature, and starting the thermal cycling device.
The present invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a fixed-frequency air conditioner processing program, and the fixed-frequency air conditioner processing program implements the steps of the control method of the fixed-frequency air conditioner when being executed by a controller.
According to the invention, the second heat exchanger is connected with the energy storage loop in parallel and the energy storage part is arranged, so that the problem that the fixed-frequency air conditioner is easily started and stopped frequently can be solved, the power consumption of the air conditioner is reduced, and the comfort of the fixed-frequency air conditioner is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an air conditioner according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an air conditioner according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an air conditioner according to still another embodiment of the present invention;
FIG. 5 is a flowchart illustrating a control method of a fixed-frequency air conditioner according to an embodiment of the present invention;
FIG. 6 is another schematic flow chart illustrating a method for controlling the constant frequency air conditioner of FIG. 5;
fig. 7 is another flowchart illustrating a control method of the constant-frequency air conditioner in fig. 5.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 11 | |
22 | |
| 12 | |
23 | |
| 13 | |
24 | |
| 14 | |
25 | First throttling means |
| 15 | |
30 | |
| 16 | Four- |
31 | |
| 17 | Second throttling means | 40 | |
| 21 | Energy storage heat exchanger |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an air conditioner.
In an embodiment of the present invention, as shown in fig. 1, an air conditioner includes:
a heat exchange circuit including a compressor 11, a first heat exchanger 12, a second heat exchanger 13, a first pipe 14 connecting the second heat exchanger 13 and the first heat exchanger 12, and a second pipe 15 connecting the second heat exchanger 13 and the compressor 11;
a charge circuit including a charge heat exchanger 21, a third pipe 22 connecting the charge heat exchanger 21 and the first pipe 14, and a fourth pipe 23 connecting the charge heat exchanger 21 and the second pipe 15; and
the energy storage part 30 is provided with an energy storage cavity 31, and the energy storage heat exchanger 21 is arranged in the energy storage cavity 31.
In this embodiment, the energy storage member 30 is a structure having an energy storage cavity 31, and the energy storage cavity 31 is filled with energy storage fluid, specifically, the energy storage fluid is water or ethylene glycol.
Specifically, in the cooling mode, the refrigerant discharged from the compressor 11 passes through the four-way valve 16, the first heat exchanger 12, the first pipe 14, the second heat exchanger 13, and the second pipe 15 in this order, and then flows back to the compressor 11 again through the four-way valve 16. In this process, when the charge circuit is opened, the first pipe 14 also distributes a part of the refrigerant to the charge circuit, that is, a part of the refrigerant flowing out of the first heat exchanger 12 flows through the third pipe 22, the charge heat exchanger 21, and the fourth pipe 23 in this order, flows through the second pipe 15 again, joins the refrigerant flowing out of the second heat exchanger 13, and finally flows back to the compressor 11 together.
In the heating mode, the refrigerant discharged from the compressor 11 passes through the four-way valve 16, the second pipe 15, the second heat exchanger 13, the first pipe 14, and the first heat exchanger 12 in this order, and then flows back to the compressor 11 again through the four-way valve 16. In this process, when the charge circuit is opened, the second pipe 15 also distributes a part of the refrigerant to the charge circuit, that is, a part of the refrigerant flowing out of the compressor 11 flows through the fourth pipe 23, the charge heat exchanger 21, and the third pipe 22 in this order, flows into the first pipe 14 to join the refrigerant flowing out of the second heat exchanger 13, and finally flows through the first heat exchanger 12 together and flows back to the compressor 11.
In the invention, in the cooling mode, when the room temperature is reduced, the energy storage loop can be opened, so that the refrigerant flowing out of the compressor 11 can be partially distributed to the energy storage loop, the refrigerant flowing through the second heat exchanger 13 is reduced, and the cold energy released to the room by the second heat exchanger 13 is reduced, thereby reducing the continuous reduction of the room temperature without closing the compressor 11 to avoid the reduction of the room temperature. Meanwhile, the refrigerant flowing through the energy storage heat exchanger 21 can refrigerate the liquid in the energy storage member 30, so that the liquid in the energy storage member 30 stores a large amount of cold. For the fixed-frequency air conditioner, when the room temperature is raised after the compressor 11 is turned off, the cold energy accumulated in the energy storage member 30 can be released to cool the room, so that the compressor 11 is prevented from being turned on again immediately.
Similarly, in the heating mode, when the room temperature rises, the energy storage circuit can be opened, so that a part of the refrigerant flowing out of the compressor 11 can be distributed to the energy storage circuit, the refrigerant flowing through the second heat exchanger 13 is reduced, and the heat released into the room by the second heat exchanger 13 is reduced, so that the continuous rise of the room temperature can be reduced, and the compressor 11 does not need to be closed to avoid the rise of the room temperature. Meanwhile, the refrigerant flowing through the accumulator heat exchanger 21 can heat the liquid in the accumulator 30, so that the liquid in the accumulator 30 accumulates a large amount of heat. For the fixed frequency air conditioner, if the room temperature is decreased after the compressor 11 is turned off, the heat accumulated in the energy storage member 30 can be released to raise the temperature of the room, thereby avoiding the compressor 11 from being turned on again immediately.
According to the invention, the second heat exchanger 13 is connected with an energy storage loop in parallel and the energy storage part 30 is arranged, so that the problem that the fixed-frequency air conditioner is easy to start and stop frequently can be solved, the power consumption of the air conditioner is reduced, and the comfort of the fixed-frequency air conditioner is improved. In addition, for the inverter air conditioner, the adjustment frequency of the air conditioner can be reduced by adopting the adjustment mode of the energy storage loop.
In order to better send the cold or heat of the energy storage member 30 into the room, in one embodiment, the air conditioner further comprises a heat circulating device 40 for sending the heat or cold of the energy storage member 30 into the room. Alternatively, the heat cycle device 40 is an air blowing device, and the energy accumulating member 30 is provided in a flow path of an air flow formed by the air blowing device. The air supply device is, for example, a fan. The air supply device directly blows the heat or cold of the energy storage member 30 to the room, thereby raising or lowering the room temperature. In addition, the thermal circulation device 40 may be a water circulation device, and the energy storage member 30 sends heat or cold to the room through the circulating water flowing in the water circulation device.
In order to open and close the accumulator circuit, in an embodiment, the accumulator circuit further includes an electromagnetic valve 24, and the electromagnetic valve 24 is disposed in the third pipe 22 or the fourth pipe 23. In addition, the solenoid valve 24 may be replaced with a manual valve, which is opened manually.
Referring to fig. 2, in an embodiment, the air conditioner further includes a first throttling device 25, the first throttling device 25 is disposed on the first pipe 14, and the first throttling device 25 is disposed on a pipe between a connection point of the third pipe 22 and the first pipe 14 and the first heat exchanger 12. In this way, the second heat exchanger 13 and the energy storage heat exchanger 21 share the same throttling device, that is, in the cooling mode, the refrigerant is throttled by the first throttling device 25 and then divided into two streams, one stream flows into the second heat exchanger 13, and the other stream flows into the energy storage loop. In the heating mode, the two refrigerants respectively flowing out of the accumulator circuit and the second heat exchanger 13 are merged in the first pipe 14 and then throttled by the first throttling device 25 at the same time. In this embodiment, the second heat exchanger 13 and the energy storage heat exchanger 21 share the same throttling device, which can reduce the number of throttling devices, and is beneficial to saving cost and simplifying structure.
Referring to fig. 1 again, in an embodiment, the air conditioner further includes a first throttling device 25 and a second throttling device 17, the first throttling device 25 is disposed on the third pipe 22, the second throttling device 17 is disposed on the first pipe 14, and the second throttling device 17 is disposed between a connection point of the third pipe 22 and the first pipe 14 and the second heat exchanger 13. Specifically, in the cooling mode, the refrigerant flowing out of the first heat exchanger 12 is divided into two streams, one stream flows to the second heat exchanger 13 after being throttled by the second throttling device 17, and the other stream flows to the energy storage heat exchanger 21 after being throttled by the first throttling device 25. The first throttle means 25 ensures that the temperature of the refrigerant in the accumulator heat exchanger 21 is below 0 c, thereby ensuring that the water in the accumulator member 30 freezes. In the heating mode, the refrigerant flowing out of the second heat exchanger 13 first throttles by the second throttling device 17 and then flows to the first heat exchanger 12, and the refrigerant flowing out of the accumulator heat exchanger 21 first throttles by the first throttling device 25 and then flows to the first heat exchanger 12. In this embodiment, the second heat exchanger 13 and the energy storage circuit are throttled by using one throttling device, so that the opening degree of different throttling devices can be adjusted to control the flow rate of the refrigerant, thereby better controlling the room temperature.
Referring to fig. 3, in an embodiment, the first throttling device 25 is disposed on the third pipe 22, the second throttling device 17 is disposed on the first pipe 14, and the second throttling device 17 is disposed between the connection point of the third pipe 22 and the first pipe 14 and the first heat exchanger 12. Specifically, in the cooling mode, the refrigerant flowing out of the first heat exchanger 12 is throttled by the second throttling device 17 and then divided into two streams, one stream flows to the second heat exchanger 13, and the other stream flows to the energy storage heat exchanger 21 after being throttled by the first throttling device 25. In the heating mode, the refrigerant flowing out of the accumulator heat exchanger 21 passes through the first expansion device 25, flows into the first pipe 14, is merged with the refrigerant flowing out of the second heat exchanger 13, flows through the second expansion device 17 at the same time, is expanded, and flows into the first heat exchanger 12. In this embodiment, the second throttling device 17 can simultaneously realize throttling of the second heat exchanger 13 and the energy storage circuit, and the first throttling device 25 is additionally arranged, so that the energy storage circuit can be finely adjusted, and room temperature can be better controlled.
Referring to fig. 4, in an embodiment, the first throttling device 25 is disposed on the first pipe 14, the first throttling device 25 is disposed between the connection position of the third pipe 22 and the first pipe 14 and the first heat exchanger 12, the second throttling device 17 is disposed on the first pipe 14, and the second throttling device 17 is disposed between the connection position of the third pipe 22 and the first pipe 14 and the second heat exchanger 13. In this embodiment, the first throttling device 25 can simultaneously realize throttling of the second heat exchanger 13 and the energy storage circuit, and the second throttling device 17 is additionally arranged, so that the second heat exchanger 13 can be finely adjusted, and room temperature can be better controlled.
In the above description, the first throttle device 25 and the second throttle device 17 are configured as a capillary tube, an expansion valve, or the like.
In the present embodiment, the energy storage member 30 has various forms, for example, in an embodiment, the energy storage member 30 includes an energy storage tank having the energy storage cavity 31. The energy storage box is generally square, round or other shapes, and the energy storage cavity 31 can also be square or round and the like. The accumulator heat exchanger 21 is entirely disposed within the accumulator chamber 31 and is surrounded by the fluid within the accumulator chamber 31. In addition, in an embodiment, the energy storage member 30 includes an energy storage pipe having the energy storage cavity 31, and the energy storage heat exchanger 21 and the energy storage pipe form an inner and outer sleeve structure. In this embodiment, the energy storage heat exchanger 21 is tubular, and energy storage fluid is disposed between the energy storage heat exchanger 21 and the energy storage member 30. Alternatively, the energy storage heat exchanger 21 is disposed in the energy storage pipe, so that the energy storage liquid surrounds the periphery of the energy storage heat exchanger 21, and in the embodiment where the thermal circulation device 40 is a blowing device, it is more favorable for blowing out the cold or heat of the energy storage liquid. In addition, the accumulator heat exchanger 21 may also be arranged outside the accumulator tube, enclosing the accumulator tube inside.
Optionally, the energy storage member 30 is a metal member. The air supply device is combined in such a way, the air supply device directly blows towards the energy storage part 30, and cold or heat in the energy storage part 30 can be blown out quickly.
The invention also provides a control method of the fixed-frequency air conditioner, and the fixed-frequency air conditioner is the air conditioner. Referring to fig. 5, the method for controlling the constant-frequency air conditioner includes the following steps:
in step S10, the indoor temperature is acquired.
Specifically, a temperature sensor configured to detect an indoor temperature is installed at a return air inlet of the air conditioner or other place in a room.
And step S21, in the refrigeration mode, determining that the indoor temperature is less than or equal to a first preset temperature, controlling the compressor to work continuously, and conducting the energy storage loop.
The first preset temperature refers to a lower temperature preset by a user, that is, the first preset temperature refers to a lower value of a room temperature comfort interval preset by the user. For the present fixed-frequency air conditioner, at the first preset temperature, the compressor 11 needs to be stopped to avoid the poor comfort of the user caused by the continuous decrease of the room temperature. The accumulator circuit is turned on, meaning that the solenoid valve 24 provided in the third pipe 22 or the fourth pipe 23 is opened.
In step S21, when the indoor temperature is less than or equal to the first preset temperature, the compressor 11 is not controlled to stop, but the energy storage circuit is opened, so that the refrigerant is divided into a part to the energy storage circuit, the refrigerant flowing through the second heat exchanger 13 is reduced, and the amount of cold released into the room by the second heat exchanger 13 is reduced, thereby reducing the continuous drop of the indoor temperature without turning off the compressor 11 to avoid the drop of the indoor temperature.
Referring to fig. 6, the method for controlling the constant-frequency air conditioner includes the following steps:
and step S31, in the heating mode, determining that the indoor temperature is greater than or equal to a second preset temperature, controlling the compressor to work continuously, and conducting the energy storage loop.
The second preset temperature refers to a higher temperature preset by the user, that is, the second preset temperature refers to a lower value of a room temperature comfort interval preset by the user. For the present fixed-frequency air conditioner, at the first preset temperature, the compressor 11 needs to be stopped to avoid the poor comfort of the user caused by the continuous increase of the room temperature. The accumulator circuit is turned on, meaning that the solenoid valve 24 provided in the third pipe 22 or the fourth pipe 23 is opened.
In step S31, when the room temperature rises, the accumulator circuit may be opened, so that the refrigerant flowing out of the compressor 11 can be partially distributed to the accumulator circuit, while the refrigerant flowing through the second heat exchanger 13 is reduced, and the heat released into the room by the second heat exchanger 13 is reduced, so that the continuous rise of the room temperature can be reduced without turning off the compressor 11 to avoid the rise of the room temperature.
Referring to fig. 5 again, in an embodiment, in the cooling mode, determining that the indoor temperature is less than or equal to the first preset temperature, and controlling the compressor to continuously operate, after the energy storage circuit is turned on, the method further includes:
step S22, determining that the indoor temperature is less than or equal to a third preset temperature, and closing the compressor and the energy storage loop; wherein the third preset temperature is lower than the first preset temperature.
Since a part of the refrigerant is branched off to the accumulator circuit, the refrigerant flowing through the second heat exchanger 13 becomes less, and the cooling capacity of the second heat exchanger 13 to the room is lowered, so that the room temperature may gradually rise or be maintained near the first preset temperature. However, in some situations, although the energy storage circuit is turned on to slow down the room temperature, the room temperature may still drop too low, so that when the room temperature is less than or equal to the third preset temperature, the compressor 11 needs to be turned off to avoid the room temperature from dropping continuously.
In this embodiment, the difference between the third preset temperature and the first preset temperature may be 1 ℃ or greater than 1 ℃.
Referring to fig. 6 again, in an embodiment, in the heating mode, determining that the indoor temperature is greater than or equal to the second preset temperature, and controlling the compressor 11 to continuously operate, after the energy storage loop is turned on, the method further includes:
step S32, determining that the indoor temperature is greater than or equal to a fourth preset temperature, and closing the compressor and the energy storage loop; wherein the fourth preset temperature is greater than the second preset temperature.
Since a part of the refrigerant is branched off to the charge circuit, the refrigerant flowing through the second heat exchanger 13 becomes less, and the temperature raising capability of the second heat exchanger 13 to the room is lowered, so that the room temperature may be gradually lowered or maintained at or around the second preset temperature. However, in some situations, although the turning on of the energy storage circuit can slow down the rising trend of the room temperature, the room temperature may still rise too much, so when the room temperature is greater than or equal to the fourth preset temperature, the compressor 11 needs to be turned off at this time to avoid the room temperature from rising continuously.
In this embodiment, the difference between the fourth preset temperature and the second preset temperature may be 1 ℃ or greater than 1 ℃.
Referring again to fig. 5, in an embodiment, the determining that the indoor temperature is less than or equal to the third preset temperature further includes, after the compressor and the energy storage circuit are turned off:
and step S23, determining that the indoor temperature is greater than or equal to a fifth preset temperature, and turning on the compressor again. Wherein the fifth preset temperature is greater than the first preset temperature.
Although the thermal cycle device 40 can send the cooling energy of the energy storage member 30 into the room, the rise of the room temperature is slowed down or suppressed for a certain period of time. But since the compressor 11 is turned off, the indoor temperature eventually inevitably rises gradually. Therefore, when the indoor temperature is greater than or equal to the fifth preset temperature, the compressor 11 needs to be turned on again to cool the indoor space.
In this step, the thermal cycler 40 may be maintained in the open state, and the thermal cycler 40 may continue to supply the cooling energy of the energy storage member 30 into the room. In addition, when the thermal cycle device 40 is an air supply device, the air supply device can play a role of turbulence and play a role of cooling. Of course, in this step, the thermal cycling device 40 may also be turned off in consideration of energy saving while the compressor 11 is turned back on.
In this embodiment, the difference between the fifth preset temperature and the first preset temperature may be 1 ℃ or more than 1 ℃.
Referring again to fig. 6, in an embodiment, the determining that the indoor temperature is greater than or equal to the fourth preset temperature further includes turning off the compressor and the energy storage circuit;
and step S33, determining that the indoor temperature is less than or equal to the sixth preset temperature, and turning on the compressor again.
And the sixth preset temperature is lower than the second preset temperature. The difference between the first stream preset temperature and the second preset temperature may be 1 ℃ or greater than 1 ℃.
Although the thermal cycle device 40 can supply the heat of the energy storage member 30 into the room, the drop of the room temperature is slowed or suppressed for a certain period of time. But since the compressor 11 is turned off, the indoor temperature eventually inevitably drops gradually. Therefore, when the indoor temperature is less than or equal to the sixth preset temperature, the compressor 11 needs to be turned on again to heat the indoor space.
In this step, the thermal cycling device 40 may be maintained in the open state, and the thermal cycling device 40 may continue to send the heat of the energy storage member 30 into the chamber. Of course, in this step, the thermal cycling device 40 may also be turned off in consideration of energy saving while the compressor 11 is turned back on.
Referring to fig. 7, in an embodiment, the method for controlling a fixed-frequency air conditioner further includes the following steps:
step S24, under the refrigeration mode, determining that the indoor temperature is higher than a third preset temperature and lower than a fifth preset temperature;
step S25, determining that the compressor 11 works and the energy storage loop is conducted;
and step S26, determining that the conduction time of the energy storage circuit reaches the preset time, and closing the compressor and the energy storage circuit.
In this embodiment, since the indoor temperature is maintained at the third preset temperature and the fifth preset temperature in a stable state, and the time period for which the energy storage circuit is conducted is also longer, that is, the preset time period generally means that the water in the energy storage member 30 is substantially frozen, that is, the cold storage amount of the energy storage member 30 reaches the maximum value, under the condition that the time period is reached. At this time, the compressor 11 is halted in view of energy saving. After the compressor 11 is turned off, if the room temperature rises, the temperature in the room may be lowered by turning on the heat cycle device 40, so that the rise of the room temperature is delayed.
Referring to fig. 5 again, in an embodiment, the constant frequency air conditioner further includes a heat circulation device 40 for sending the heat or cold of the energy storage member 30 into the room; the control method of the fixed-frequency air conditioner further comprises the following steps:
step S27, in the cooling mode, determining that the indoor temperature is greater than or equal to the first preset temperature, and turning on the heat cycle device.
Specifically, in step S22, it is determined that the indoor temperature is less than or equal to the third preset temperature, and after the compressor 11 and the energy storage circuit are turned off, the indoor temperature will eventually gradually increase, but below the first preset temperature, the indoor temperature is low, and at this time, the thermal cycling device 40 does not need to be turned on, and only when the indoor temperature continues to increase again and reaches the first preset temperature, the thermal cycling device 40 needs to be turned on to slow down the increase of the indoor temperature, so that the shutdown time of the compressor 11 is prolonged, and frequent startup of the compressor 11 is avoided. Or in other situations, the indoor temperature rises to the first preset temperature due to the influence of the ambient temperature or other factors, and the thermal cycling device 40 is also turned on to avoid or slow down the continuous rise of the indoor temperature.
In the present embodiment, since the energy storage circuit is opened before the refrigerant flows through the energy storage heat exchanger 21 to store cold in the energy storage member 30, a large amount of cold is stored in the liquid in the energy storage member 30. If the room temperature rises after the compressor 11 is turned off, the cold energy accumulated in the energy storage member 30 can be released to cool the room, so that the compressor 11 is prevented from being turned on again immediately.
Referring to fig. 6 again, in an embodiment, the method for controlling the constant-frequency air conditioner further includes the following steps:
and step S34, in the heating mode, determining that the indoor temperature is less than or equal to a second preset temperature, and starting the heat circulation device.
Specifically, in step S32, it is determined that the indoor temperature is greater than or equal to the third preset temperature, and after the compressor 11 and the energy storage circuit are turned off, the indoor temperature eventually decreases gradually, but above the second preset temperature, the indoor temperature is higher, and at this time, the thermal cycling device 40 does not need to be turned on, and only when the room temperature continues to decrease again and reaches the second preset temperature, the thermal cycling device 40 needs to be turned on to slow down the decrease of the indoor temperature, so that the shutdown time of the compressor 11 is prolonged, and frequent startup of the compressor 11 is avoided. Or in other situations, the indoor temperature is decreased to the second preset temperature due to the influence of the ambient temperature or other factors, and the thermal cycling device 40 is also turned on to avoid or slow down the continuous decrease of the indoor temperature.
In the present embodiment, since the accumulator circuit is previously opened so that the refrigerant flows through the accumulator heat exchanger 21 to accumulate heat in the accumulator member 30, the fluid in the accumulator member 30 accumulates a large amount of heat. If the room temperature is lowered after the compressor 11 is turned off, the heat accumulated in the energy accumulating member 30 can be released to raise the temperature of the room, thereby preventing the compressor 11 from being turned on again immediately.
The present invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a fixed-frequency air conditioner processing program, and the fixed-frequency air conditioner processing program implements the steps of the control method of the fixed-frequency air conditioner when being executed by a controller.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. An air conditioner, comprising:
the heat exchange loop comprises a compressor, a first heat exchanger, a second heat exchanger, a first pipe for connecting the second heat exchanger and the first heat exchanger, and a second pipe for connecting the second heat exchanger and the compressor;
a charge circuit including a charge heat exchanger, a third pipe connecting the charge heat exchanger and the first pipe, and a fourth pipe connecting the charge heat exchanger and the second pipe; and
the energy storage piece is provided with an energy storage cavity, and the energy storage heat exchanger is arranged in the energy storage cavity.
2. The air conditioner according to claim 1, further comprising a heat circulating means for sending the heat or the cold of the energy accumulating member into a room.
3. The air conditioner according to claim 2, wherein the heat circulating means is an air blowing means, and the energy accumulating member is provided in a flow path of an air flow formed by the air blowing means.
4. The air conditioner according to claim 1, wherein the accumulator circuit further includes a solenoid valve provided in the third piping or the fourth piping.
5. The air conditioner according to any one of claims 1 to 4, further comprising a first throttling device provided in the first pipe and provided in a pipe between a connection of the third pipe and the first heat exchanger;
or the air conditioner also comprises a first throttling device and a second throttling device;
the first throttling device is provided in the third pipe, the second throttling device is provided in the first pipe, and the second throttling device is provided between the second heat exchanger and a connection point between the third pipe and the first pipe; alternatively, the first and second electrodes may be,
the first throttling device is provided in the third pipe, the second throttling device is provided in the first pipe, and the second throttling device is provided between the first heat exchanger and a connection point between the third pipe and the first pipe; alternatively, the first and second electrodes may be,
the first throttling device is provided in the first pipe, and the first throttling device is provided between the first heat exchanger and a connection point of the third pipe and the first pipe, and the second throttling device is provided in the first pipe, and the second throttling device is provided between the second heat exchanger and a connection point of the third pipe and the first pipe.
6. The air conditioner according to claim 1, wherein said energy accumulating member includes an energy accumulating tank having said energy accumulating chamber; alternatively, the first and second electrodes may be,
the energy storage part comprises an energy storage pipe, the energy storage pipe is provided with the energy storage cavity, and the energy storage heat exchanger and the energy storage pipe form an inner and outer sleeve structure.
7. A method for controlling a fixed-frequency air conditioner, wherein the fixed-frequency air conditioner is the air conditioner according to any one of claims 1 to 6;
the control method of the fixed-frequency air conditioner comprises the following steps:
acquiring indoor temperature;
in a refrigeration mode, determining that the indoor temperature is less than or equal to a first preset temperature, controlling the compressor to continuously work, and conducting the energy storage loop; and/or the presence of a gas in the gas,
and under the heating mode, determining that the indoor temperature is greater than or equal to a second preset temperature, controlling the compressor to continuously work, and conducting the energy storage loop.
8. The method as claimed in claim 7, wherein in the cooling mode, the indoor temperature is determined to be less than or equal to a first preset temperature, the compressor is controlled to operate continuously, and after the energy storage circuit is conducted, the method further comprises:
determining that the indoor temperature is less than or equal to a third preset temperature, and closing the compressor and the energy storage loop;
wherein the third preset temperature is lower than the first preset temperature;
under the mode of heating, confirm that indoor temperature is greater than or equal to the second and predetermine the temperature, control compressor continuous work still includes after the energy storage loop switches on:
determining that the indoor temperature is greater than or equal to a fourth preset temperature, and closing the compressor and the energy storage loop;
wherein the fourth preset temperature is greater than the second preset temperature.
9. The method of claim 8, wherein the determining that the indoor temperature is less than or equal to a third preset temperature further comprises, after the shutting down the compressor and the accumulator circuit:
determining that the indoor temperature is greater than or equal to a fifth preset temperature, and turning on the compressor again;
the step of determining that the indoor temperature is greater than or equal to a fourth preset temperature is included after the compressor and the energy storage loop are closed;
determining that the indoor temperature is less than or equal to a sixth preset temperature, and turning on the compressor again;
the fifth preset temperature is higher than the first preset temperature, and the sixth preset temperature is lower than the second preset temperature.
10. The method for controlling a fixed-frequency air conditioner according to claim 7, further comprising the steps of:
in the refrigeration mode, determining that the indoor temperature is higher than a third preset temperature and lower than a fifth preset temperature;
determining the work of the compressor and the conduction of an energy storage loop;
and determining that the conduction time of the energy storage loop reaches the preset time, and closing the compressor and the energy storage loop.
11. The control method of a constant frequency air conditioner according to any one of claims 7 to 10, wherein the constant frequency air conditioner further comprises a heat circulating means for sending the heat or the cold of the energy storage member into a room;
the control method of the fixed-frequency air conditioner further comprises the following steps:
in the refrigeration mode, determining that the indoor temperature is greater than or equal to a first preset temperature, and starting a thermal cycle device;
and under the heating mode, determining that the indoor temperature is less than or equal to a second preset temperature, and starting the thermal cycling device.
12. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a fixed-frequency air conditioner processing program, which when executed by a controller, implements the steps of the control method of a fixed-frequency air conditioner according to any one of claims 7 to 11.
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| CN201911041483.9A CN112815414A (en) | 2019-10-29 | 2019-10-29 | Air conditioner, control method of constant frequency air conditioner, and computer-readable storage medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390206A (en) * | 2021-07-07 | 2021-09-14 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner working method, computer device and storage medium |
| CN114646122A (en) * | 2022-02-28 | 2022-06-21 | 青岛海尔空调电子有限公司 | Method and device for controlling temperature of air conditioner, air conditioner and storage medium |
| WO2022252523A1 (en) * | 2021-06-01 | 2022-12-08 | 广东美的暖通设备有限公司 | Multi-split air conditioning system and control method therefor |
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2019
- 2019-10-29 CN CN201911041483.9A patent/CN112815414A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252523A1 (en) * | 2021-06-01 | 2022-12-08 | 广东美的暖通设备有限公司 | Multi-split air conditioning system and control method therefor |
| CN113390206A (en) * | 2021-07-07 | 2021-09-14 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner working method, computer device and storage medium |
| CN113390206B (en) * | 2021-07-07 | 2022-03-08 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner working method, computer device and storage medium |
| CN114646122A (en) * | 2022-02-28 | 2022-06-21 | 青岛海尔空调电子有限公司 | Method and device for controlling temperature of air conditioner, air conditioner and storage medium |
| CN114646122B (en) * | 2022-02-28 | 2024-03-22 | 青岛海尔空调电子有限公司 | Method and device for air conditioner temperature control, air conditioner and storage medium |
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