CN110398048B - Air conditioning system, air conditioning control method, air conditioning control device, and storage medium - Google Patents
Air conditioning system, air conditioning control method, air conditioning control device, and storage medium Download PDFInfo
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- CN110398048B CN110398048B CN201910667644.9A CN201910667644A CN110398048B CN 110398048 B CN110398048 B CN 110398048B CN 201910667644 A CN201910667644 A CN 201910667644A CN 110398048 B CN110398048 B CN 110398048B
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B41/00—Fluid-circulation arrangements
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Abstract
The invention discloses an air conditioning system which comprises an indoor unit, wherein the indoor unit comprises an indoor heat exchanger, a first throttling device and a bypass valve, the indoor heat exchanger comprises a first heat exchanger and a second heat exchanger connected with the first heat exchanger in series, and the first throttling device is arranged between the first heat exchanger and the second heat exchanger; the bypass valve is arranged in parallel with the first heat exchanger. The invention also discloses an air conditioner control method, an air conditioner control device and a readable storage medium. The invention aims to realize that the capacity and the output of the indoor heat exchanger can be adjusted according to the complex load change, and improve the comfort of the indoor environment.
Description
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to an air conditioning system, an air conditioning control method, an air conditioning control device, and a readable storage medium.
Background
With the increasing demand for comfort of air conditioners, the demand for air conditioners is also increasing. In order to better adapt to different requirements of indoor environments, the conventional air conditioning system is provided with a plurality of heat exchangers connected in series indoors, and a throttling component is arranged between the heat exchangers to control heating or refrigerating of each heat exchanger so as to realize multifunctional regulation of indoor air. However, the area of the heat exchanger is fixed, the capacity of each heat exchanger is fixed, the heat output of the coil pipe cannot be controlled and adjusted, the heat exchanger is difficult to adapt to complex load change requirements, the difference between the air outlet temperature of the indoor unit and a set value is easy to cause, and the comfort of the indoor environment is affected.
The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioning system, aiming at realizing that the capacity and the output of an indoor heat exchanger can be adjusted according to complex load change, and improving the comfort of the indoor environment.
In order to achieve the above object, the present invention provides an air conditioning system including an indoor unit, the indoor unit including:
the indoor heat exchanger comprises a first heat exchanger and a second heat exchanger connected with the first heat exchanger in series;
the first throttling device is arranged between the first heat exchanger and the second heat exchanger;
a bypass valve disposed in parallel with the first heat exchanger.
Optionally, the indoor unit further includes:
one end of the bypass valve is connected with a refrigerant flow path between the first heat exchanger and the first throttling device, and the other end of the bypass valve is connected between the first refrigerant interface and the first heat exchanger;
one end of the second heat exchanger is connected with the second refrigerant interface, and the other end of the second heat exchanger is connected with the first throttling device;
and the second throttling device is arranged between the first refrigerant interface and the first heat exchanger.
Optionally, the air conditioning system further comprises:
a compressor;
the outdoor heat exchanger comprises a third refrigerant interface and a fourth refrigerant interface;
one end of the third throttling device is connected with the third refrigerant interface, and the other end of the third throttling device is connected with the first refrigerant interface;
the four-way valve comprises a first interface, a second interface, a third interface and a fourth interface, wherein the first interface is connected with a gas return port of the compressor, the second interface is connected with a gas exhaust port of the compressor, the third interface is connected with a fourth refrigerant interface of the outdoor heat exchanger, and the fourth interface is connected with the second refrigerant interface.
Optionally, the indoor unit further includes:
the first shell is provided with a first air inlet and a first air outlet;
the first shell is arranged in the first shell, the second shell is provided with a first ventilation opening and a second ventilation opening which are oppositely arranged, the first heat exchanger and the second heat exchanger are arranged in the second shell, the first heat exchanger is arranged close to the first ventilation opening, and the second heat exchanger is arranged close to the second ventilation opening;
the flow direction switching device is arranged between the first shell and the second shell so as to enable air entering the first shell to be switched between a first flow direction and a second flow direction, the first flow direction is that the air sequentially flows through the first air inlet, the first ventilation opening, the second ventilation opening and the first air outlet, and the second flow direction is that the air sequentially flows through the first air inlet, the second ventilation opening, the first ventilation opening and the first air outlet.
Optionally, a first air duct communicating the first vent and the second vent is formed in the second housing, a second air duct is formed between an outer wall of the second housing and an inner wall of the first housing, the second air duct is separated into a first sub air duct and a second sub air duct by the flow direction switching device, the first sub air duct has a second air inlet and a second air outlet, and the second sub air duct has a third air inlet and a third air outlet;
the second air inlet of the first sub-air duct is communicated with the first air inlet, and the third air outlet of the second sub-air duct is communicated with the first air outlet;
the flow direction switching device is configured to switch between a first position and a second position;
in the first position, the flow direction switching device closes a passage between the second air outlet and the second air outlet, and the flow direction switching device closes a passage between the third air inlet and the first air outlet, so that the air entering the first housing flows in the first flow direction;
in the second position, the flow direction switching device opens a passage between the second air outlet and the second air vent, and the flow direction switching device opens a passage between the third air inlet and the first air vent, so that the air entering the first housing flows in the second flow direction.
Optionally, the first air inlet and the first air outlet are disposed opposite to each other, the first vent is disposed near the first air inlet, and the second vent is disposed near the first air outlet.
Optionally, the flow direction switching device includes a first air valve and a second air valve, the first air valve includes a first rotating portion and a first baffle connected to the first rotating portion, the first rotating portion is rotatably connected to an edge of the first air inlet, and an end of the first baffle, which is far away from the first rotating portion, is located in the first air vent;
the second air valve comprises a second rotating part and a second baffle connected with the second rotating part, the second rotating part is rotatably connected to the edge of the first air outlet, and one end, far away from the second rotating part, of the second baffle is located in the second air outlet;
when the first baffle is limited at the edge of the first ventilation opening close to the first rotating part and the second baffle is limited at the edge of the second ventilation opening close to the second rotating part, the first position is formed;
the first baffle is limited at the edge of the first ventilation opening far away from the first rotating part, and the second baffle is limited at the edge of the second ventilation opening far away from the second rotating part to form the second position.
In addition, in order to achieve the above object, the present application also proposes an air conditioning control method, based on the air conditioning system as described in any one of the above, the air conditioning control method including the steps of:
acquiring a first characteristic parameter of the heat load demand of a first heat exchanger;
and controlling the bypass valve to operate according to the first characteristic parameter.
Optionally, when the air conditioning system includes a second throttling device, the air conditioning control method further includes:
acquiring a current operation mode of an air conditioning system:
when the operation mode is a refrigeration mode or a heating mode, acquiring a second characteristic parameter of the heat load demand of the air conditioning system;
judging whether the second characteristic parameter is smaller than or equal to a preset threshold value or not;
if yes, controlling the second throttling device to close;
if not, controlling the second throttling device to be started.
Optionally, when the air conditioning system includes a flow direction switching device, after the step of obtaining the current operation mode of the air conditioning system, the method further includes:
determining a target flow direction of air in the indoor unit according to the operation mode;
and controlling the flow direction switching device to operate according to the target flow direction.
Optionally, the step of determining a target flow direction of air in the indoor unit according to the operation mode includes:
when the operation mode is a first mode, determining that the target flow direction is a first flow direction;
and when the operation mode is a second mode, determining that the target flow direction is a second flow direction.
Further, in order to achieve the above object, the present application also proposes an air conditioning control device including: the air conditioner control method comprises a memory, a processor and an air conditioner control program stored on the memory and capable of running on the processor, wherein the air conditioner control program realizes the steps of the air conditioner control method according to any one of the above items when being executed by the processor.
In addition, in order to achieve the above object, the present application also proposes a readable storage medium having stored thereon an air conditioning control program, which when executed by a processor, implements the steps of the air conditioning control method according to any one of the above.
The indoor unit of the air conditioning system comprises a first heat exchanger and a second heat exchanger which are connected in series, a first throttling device is arranged between the two heat exchangers, air entering the indoor unit can exchange heat through the two heat exchangers successively under the adjustment of the first throttling device, so that the air conditioning system can adjust indoor air in various operation modes, a bypass valve is arranged to be connected with the first heat exchanger in parallel, the bypass function of the bypass valve can adjust the flow of a refrigerant in the first heat exchanger, the capacity and the output of the indoor heat exchanger can not be limited by a fixed heat exchange area, and the capacity and the output of the indoor heat exchanger can be adjusted by adapting to the load requirement of the first heat exchanger through the bypass valve, so that the capacity and the output of the indoor heat exchanger can be adjusted by adapting to complex load changes, and the comfort of an indoor environment is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an air conditioning system of the present invention;
FIG. 2 is a schematic view of the air conditioning system of FIG. 1 showing a first flow direction and a position of the flow direction switching device;
FIG. 3 is a schematic view of a second flow direction and a position of a flow direction switching device of air in the air conditioning system of FIG. 1;
FIG. 4 is a flowchart illustrating an embodiment of an air conditioning control method according to the present invention;
FIG. 5 is a schematic flow chart illustrating an air conditioning control method according to another embodiment of the present invention;
FIG. 6 is a schematic flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 7 is a schematic diagram of a hardware structure of an embodiment of an air conditioning control apparatus according to the invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: an air conditioning system is proposed, the indoor unit of which comprises: the indoor heat exchanger comprises a first heat exchanger and a second heat exchanger connected with the first heat exchanger in series, the first throttling device is arranged between the first heat exchanger and the second heat exchanger, and the bypass valve is connected with the first heat exchanger in parallel.
In the prior art, when the indoor air is subjected to multifunctional exchange and adjustment through the heat exchangers connected in series, the area of each heat exchanger is fixed, the capacity of each heat exchanger is fixed, the heat output of the coil pipes cannot be controlled and adjusted, the complex load change requirements cannot be adapted easily, the difference between the air outlet temperature of the indoor unit and a set value is large, and the comfort of the indoor environment is affected.
The invention provides the solution, and aims to realize that the capacity and the output of the indoor heat exchanger can be adjusted according to the complex load change, so that the indoor environment comfort is improved.
The invention provides an air conditioning system.
In an embodiment of the present invention, referring to fig. 1, the air conditioning system includes an indoor unit including an indoor heat exchanger, a first throttling device, and a bypass valve.
The indoor heat exchanger comprises a first heat exchanger and a second heat exchanger connected with the first heat exchanger in series, the first throttling device is arranged between the first heat exchanger and the second heat exchanger, and the bypass valve is connected with the first heat exchanger in parallel.
The operation states of the first heat exchanger and the second heat exchanger can be adjusted by adjusting the opening degree of the first throttling device. When the air conditioning system operates, the opening degree of the first throttling device is fully opened, and no throttling or little throttling is performed, so that when the pressure difference between two ends of the first throttling device is small, the first heat exchanger and the second heat exchanger can absorb or release heat simultaneously; or when the first throttling device opens the throttling device with a smaller opening degree, one of the first heat exchanger and the second heat exchanger absorbs heat and the other releases heat when the pressure difference between two ends of the first throttling device is larger. The first throttling means may be embodied as an electronic expansion valve or the like.
The bypass valve is arranged in parallel with the first heat exchanger, characteristic parameters of heat load requirements of the first heat exchanger can be acquired, and the operation of the bypass valve can be controlled according to the characteristic parameters. The bypass valve may be embodied as a solenoid valve or an electronic expansion valve. When the bypass valve is an electromagnetic valve, the opening or closing of the bypass valve can be controlled according to the characteristic parameters, and when the bypass valve is an electronic expansion valve, the opening degree of the bypass valve can be controlled according to the characteristic parameters.
The indoor unit of the air conditioning system comprises a first heat exchanger and a second heat exchanger which are connected in series, a first throttling device is arranged between the two heat exchangers, air entering the indoor unit can exchange heat through the two heat exchangers sequentially under the adjustment of the first throttling device, so that the air conditioning system can adjust indoor air in various operation modes, a bypass valve is arranged to be connected with the first heat exchanger in parallel, the capacity and the output of the indoor heat exchanger can not be limited by a fixed heat exchange area, the capacity and the output of the indoor heat exchanger can be adjusted by adapting to the load requirement of the first heat exchanger through the bypass valve, the capacity and the output of the indoor heat exchanger can be adjusted by adapting to complex load changes, and the indoor environment comfort is improved.
Further, referring to fig. 1, the indoor unit further includes: the first refrigerant interface, the second refrigerant interface and the second throttling device. One end of the first heat exchanger is connected with the first refrigerant interface, the other end of the first heat exchanger is connected with the first throttling device, one end of the bypass valve is connected with a refrigerant flow path between the first heat exchanger and the first throttling device, and the other end of the bypass valve is connected between the first refrigerant interface and the first heat exchanger. One end of the second heat exchanger is connected with the second refrigerant interface, and the other end of the second heat exchanger is connected with the first throttling device. The second throttling device is arranged between the first refrigerant interface and the first heat exchanger. The first refrigerant interface and the second refrigerant interface are specifically used for communicating the indoor heat exchanger with the compressor, the outdoor heat exchanger and other components to form a refrigerant circulation loop, one of the first refrigerant interface and the second refrigerant interface can be used as an inlet of a refrigerant entering the indoor unit, and the other of the first refrigerant interface and the second refrigerant interface can be used as an outlet of the refrigerant discharging the indoor unit.
In this embodiment, after the second throttling device is connected in series with the first heat exchanger, the second throttling device is connected in parallel with the bypass valve, so that the flow of the refrigerant flowing into the first heat exchanger for heat exchange or the flow of the refrigerant flowing out of the first heat exchanger to the outdoor unit is controlled in a linkage manner under the coordination of the second throttling device and the bypass valve, the adaptability of the indoor heat exchanger to complex load changes is further improved, and the comfort of the indoor environment temperature is further improved.
Specifically, the air conditioning system may further include an outdoor unit, and the outdoor unit may specifically include a compressor, an outdoor heat exchanger, a four-way valve, a third throttling device, and the like. The outdoor heat exchanger comprises a third refrigerant interface and a fourth refrigerant interface; one end of the third throttling device is connected with the third refrigerant interface, and the other end of the third throttling device is connected with the first refrigerant interface.
The four-way valve comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is connected with a return air port of the compressor, the second interface is connected with an exhaust port of the compressor, the third interface is connected with a fourth refrigerant interface of the outdoor heat exchanger, and the fourth interface is connected with the second refrigerant interface.
Through the mode, the four-way valve, the outdoor heat exchanger, the compressor, the third throttling device and the indoor heat exchanger in the indoor unit can be constructed into a refrigerant circulation loop, the refrigerant in the outdoor heat exchanger can be controlled to absorb or release heat through the four-way valve, and on the basis, the first throttling device, the second throttling device, the third throttling device and the bypass valve are combined for coordinated control, so that the air-conditioning system can operate in multiple operation modes (a refrigeration mode, a heating mode, a heat recovery mode, a dehumidification mode and the like), and can be adapted to different heat load requirements in each operation mode, and the comfort of an indoor environment is improved.
Further, referring to fig. 1, the indoor unit further includes a first casing, a second casing, and a flow direction switching device. The first refrigerant interface and the second refrigerant interface are arranged on the first shell, and the first shell is further provided with a first air inlet and a first air outlet. The second shell is arranged in the first shell, the second shell is provided with a first ventilation opening and a second ventilation opening which are oppositely arranged, the first heat exchanger and the second heat exchanger are arranged in the second shell, the first heat exchanger is close to the first ventilation opening, and the second heat exchanger is close to the second ventilation opening. The flow direction switching device is arranged between the first shell and the second shell so as to enable air entering the first shell to be switched between a first flow direction and a second flow direction, the first flow direction is that the air sequentially flows through the first air inlet, the first ventilation opening, the second ventilation opening and the first air outlet, and the second flow direction is that the air sequentially flows through the first air inlet, the second ventilation opening, the first ventilation opening and the first air outlet. The schematic diagram of the first flow direction may refer to a dashed line in fig. 2, and the schematic diagram of the second flow direction may refer to a dashed line in fig. 3.
The specific position of the flow direction switching device can be selected according to actual requirements, and can be arranged in the first air inlet, the first ventilation opening, the first air outlet and/or the second ventilation opening, or in a channel between every two of the first air inlet, the first ventilation opening, the second ventilation opening and the second ventilation opening. The first air inlet can be an indoor air return inlet and can also be communicated with an outdoor air inlet of a fresh air system; the first air outlet is communicated with the indoor space where the indoor unit is located.
In the first downward flow, the air flowing into the indoor unit is discharged to the indoor environment after heat exchange is carried out on the air sequentially by the first heat exchanger and the second heat exchanger; and when the second flow is downward, the air flowing into the indoor unit is discharged to the indoor environment after heat exchange is carried out on the air sequentially through the second heat exchanger and the first heat exchanger.
In this embodiment, the setting of the flow direction switching device can switch the heat exchange sequence of the air in the two heat exchangers of the indoor unit, so that the air conditioning system can adapt to different operation modes, select the corresponding heat exchange sequence to exchange heat with the air, and improve the air outlet quality of the air conditioning system in different operation modes.
Specifically, referring to fig. 2 to 3, a first air duct communicating the first vent and the second vent is formed in the second housing, a second air duct is formed between an outer wall of the second housing and an inner wall of the first housing, and the second air duct is separated into a first sub air duct and a second sub air duct by the flow direction switching device; the first sub-air duct is provided with a second air inlet and a second air outlet, and the second sub-air duct is provided with a third air inlet and a third air outlet; the second air inlet of the first sub-air duct is communicated with the first air inlet, when the air flows in the first flow direction, the second air outlet of the first sub-air duct is switched to be isolated from the second air outlet through the flow direction switching device, and when the air flows in the second flow direction, the second air outlet of the first sub-air duct is switched to be communicated with the second air outlet through the flow direction switching device; the third air outlet of the second sub-air duct is communicated with the first air outlet, when the air flows in the first flow direction, the third air inlet of the second sub-air duct is switched to be isolated from the first ventilation opening through the flow direction switching device, and when the air flows in the second flow direction, the third air inlet of the second sub-air duct is switched to be communicated with the first ventilation opening through the flow direction switching device.
When the flow direction switching device isolates the second air vent from the second air outlet and isolates the first air vent from the third air inlet, the air entering from the first air inlet does not flow to the first air outlet through the second air duct, but directly flows to the first air outlet through the first air duct in the second shell after entering the first shell from the first air inlet, so that the air entering the first shell flows in the first flow direction.
When the second air outlet is communicated with the second air outlet and the first air outlet is communicated with the third air inlet by the flow direction switching device, the air entering from the first air inlet flows to the first air channel through the first sub-air channel and then flows to the second sub-air channel through the first air channel, so that the air entering the first shell flows in the second flow direction.
Specifically, referring to fig. 2 to 3, the flow direction switching device is configured to switch between a first position and a second position. Specifically, the position of the flow direction switching device in fig. 2 may be used as a first position, in which the flow direction switching device closes a channel between the second air outlet and the second air outlet, and the flow direction switching device closes a channel between the third air inlet and the first air outlet, so that the air entering the first housing flows in the first flow direction. Specifically, the position of the flow direction switching device in fig. 3 may be used as a second position, where the flow direction switching device opens a channel between the second air outlet and the second air outlet, and the flow direction switching device opens a channel between the third air inlet and the first air outlet, so that the air entering the first housing flows in the second flow direction. In the present embodiment, the switching of the first flow direction and the second flow direction is effected by the flow direction switching device being switched between the two positions configured.
In order to improve heat exchange efficiency, ensure air outlet quality, and reduce unnecessary flow paths of air in the first housing, referring to fig. 2 to 3, the first air inlet and the first air outlet are disposed opposite to each other, the first air vent is disposed near the first air inlet, and the second air vent is disposed near the first air outlet. Through the mode, the air entering from the first air inlet is discharged after entering the first air channel for heat exchange quickly when flowing in the first flow direction, and the air can not flow in the second air channel for a long distance when flowing in the second flow direction, so that the air enters the first air channel quickly, and reaches the first air outlet quickly after heat exchange is completed in the first air channel.
Referring to fig. 2 to 3, the flow direction switching device includes a first damper and a second damper. The first air valve comprises a first rotating part and a first baffle connected with the first rotating part, the first rotating part is rotatably connected to the edge of the first air inlet, and one end, far away from the first rotating part, of the first baffle is located in the first air vent; the second air valve comprises a second rotating portion and a second baffle connected with the second rotating portion, the second rotating portion is rotatably connected to the edge of the first air outlet, and one end, far away from the second rotating portion, of the second baffle is located in the second air outlet. When the first rotating part rotates, the first baffle connected with the first rotating part can be driven to move in the first air vent, and when the second rotating part rotates, the second baffle connected with the second rotating part can be driven to move in the second air vent. The first rotating part and the second rotating part can be in transmission connection with an output shaft of the motor, and the positions of the first baffle and the second baffle can be changed by controlling the motor.
The first baffle plate is limited at the first position when the first ventilation opening is close to the edge of the first rotating part, and the second baffle plate is limited at the second ventilation opening is close to the edge of the second rotating part; the first baffle is limited at the edge of the first ventilation opening far away from the first rotating part, and the second baffle is limited at the edge of the second ventilation opening far away from the second rotating part to form the second position.
In this embodiment, the flow direction switching device is arranged in the above manner to switch the flow direction of air in the indoor unit, which is beneficial to simplifying the internal structure of the indoor unit, reducing the wind resistance of air flowing in the indoor unit, and simplifying the control of the flow direction switching device.
In addition, in another embodiment, a retractable or rotatable baffle plate structure may be disposed at a part or all of the second air inlet, the second air outlet, the first ventilation opening, the second ventilation opening, and the third air inlet, respectively, and the air circulation channels required by the first flow direction and the second flow direction may be configured by the cooperation of opening and closing each air outlet.
Based on the air conditioning system in the above embodiment, the embodiment of the invention further provides an air conditioning control method. Referring to fig. 4, the air conditioner control method includes the steps of:
step S10, acquiring a first characteristic parameter of a heat load demand of a first heat exchanger;
the first characteristic parameters comprise air conditioner operation parameters, environmental parameters and the like for representing the heat load requirement of the first heat exchanger. The larger the first characteristic parameter is, the larger the heat load of the first heat exchanger is; the smaller the first characteristic parameter, the smaller the thermal load of the first heat exchanger. For example, a temperature difference between the coil temperature of the first heat exchanger and the indoor ambient temperature may be acquired as the first characteristic parameter.
And S20, controlling the bypass valve to operate according to the first characteristic parameter.
When the bypass valve is an electronic expansion valve, different first characteristic parameters correspond to the opening degrees of different bypass valves, and the larger the first characteristic parameter is, the smaller the opening degree of the corresponding bypass valve is. When the bypass valve is an electromagnetic valve, the first characteristic parameter is greater than or equal to a preset value, and the electromagnetic valve is closed; and if the first characteristic parameter is smaller than the preset value, the electromagnetic valve is opened.
In this embodiment, the bypass valve is controlled to operate according to the first characteristic parameter, the bypass valve is connected with the first heat exchanger in parallel, the bypass function of the bypass valve can adjust the refrigerant flow in the first heat exchanger, the capacity and the output of the indoor heat exchanger can not be limited by a fixed heat exchange area, and the capacity and the output of the indoor heat exchanger can be adjusted according to the load requirement of the first heat exchanger through the bypass valve, so that the capacity and the output of the indoor heat exchanger can be adjusted according to complex load changes, and the comfort of an indoor environment is improved.
Further, in another embodiment, when the air conditioning system includes the second throttling device, referring to fig. 5, the air conditioning control method further includes:
step S01, acquiring the current operation mode of the air conditioning system:
s02, when the operation mode is a refrigeration mode or a heating mode, acquiring a second characteristic parameter of the heat load requirement of the air conditioning system;
the second characteristic parameters specifically include air conditioner operating parameters and environmental parameters representing the cooling or heating heat load requirements of the air conditioning system. For example, a temperature difference between the set temperature of the air conditioner and the indoor ambient temperature may be acquired as the second characteristic parameter. Wherein a larger second characteristic parameter indicates a larger heat load demand of the air conditioning system.
Step S03, judging whether the second characteristic parameter is less than or equal to a preset threshold value;
if yes, go to step S04, otherwise go to step S05
Step S04, controlling the second throttling device to close;
and step S05, controlling the second throttling device to be started.
Due to the parallel connection effect of the bypass valves, when the second throttling device is closed, the refrigerant does not pass through the heat exchanger of the first heat exchanger, and when the second throttling device is opened, the refrigerant exchanges heat through the first heat exchanger.
Through the mode, due to the arrangement of the bypass valve, when the heat load demand of the air-conditioning system is small, the small-capacity output of the air-conditioning system can be realized through the closing of the second throttling device, and when the heat load demand of the air-conditioning system is large, the large-capacity output of the air-conditioning system can be realized through the opening of the second throttling device, so that the variability of the capacity of the indoor heat exchanger is realized, the adaptability of the capacity and the output of the indoor heat exchanger to the complex load change is further improved, and the indoor environment comfort is improved.
Further, in another embodiment, when the air conditioning system includes a flow direction switching device, referring to fig. 6, after the step of acquiring the current operation mode of the air conditioning system, the method further includes:
step S06, determining the target flow direction of the air in the indoor unit according to the operation mode;
different operation modes are adapted to different characteristics of the system, and different target flow directions are set. The target flow direction here includes the first flow direction and the second flow direction described above.
And when the operation mode is a first mode, determining that the target flow direction is a first flow direction. And when the operation mode is a second mode, determining that the target flow direction is a second flow direction.
The first mode specifically includes a cooling mode or a heating mode. The second mode specifically includes a dehumidification mode or a heat recovery mode. The heat recovery mode may specifically include a first heat recovery mode and a second heat recovery mode.
Specifically, when the temperature of the indoor environment needs to be reduced, the air conditioning system can be controlled to perform cooling operation. When the temperature of the indoor environment needs to be raised, the heating operation of the air conditioning system can be controlled. When the indoor environment needs to be dehumidified, the system can be controlled to be dehumidified and operated. When the air conditioning system operates in a refrigerating mode, the air outlet temperature is too low, and the air conditioning system can be controlled to operate in a first heat recovery mode. When the air conditioning system is in heating operation, the air outlet temperature is too high, and the air conditioning system can be controlled to operate in a second heat recovery mode.
Referring to fig. 1, a direction a in fig. 1 is a refrigerant flow direction when the air conditioning system needs to lower the indoor temperature or to perform dehumidification, and a direction B in fig. 1 is a refrigerant flow direction diagram when the air conditioning system needs to increase the indoor temperature.
When the air conditioner needs to reduce the indoor temperature or dehumidify, under the action of the four-way valve, a fourth refrigerant interface of the outdoor heat exchanger is connected with an exhaust port of the compressor, and heat is released through a refrigerant of the outdoor heat exchanger; when the air conditioner needs to raise the indoor temperature, the fourth refrigerant interface of the outdoor heat exchanger is connected with the return air port of the compressor under the action of the four-way valve, and the refrigerant passing through the outdoor heat exchanger absorbs heat.
The air conditioner operation modes can be divided according to different states of the first heat exchanger, the second heat exchanger and the outdoor heat exchanger under different air conditioning requirements of indoor environments. When the indoor temperature of the air conditioner needs to be reduced, the operation mode of the air conditioner specifically comprises a refrigeration mode and a first heat recovery mode; when the air conditioner needs to dehumidify the indoor, the operation mode of the air conditioner specifically comprises a dehumidification mode; when the air conditioner needs to increase the indoor temperature, the operation mode of the air conditioner specifically includes a heating mode and a second heat recovery mode. In the dehumidification mode or the heat recovery mode, one of the first heat exchanger and the second heat exchanger is an evaporator, and the other is a condenser. Specifically, in the dehumidification mode and the first heat recovery mode, the condenser of the first heat exchanger and the second heat exchanger are evaporators; in the second heat recovery mode, the evaporator of the first heat exchanger and the second heat exchanger are condensers.
Under the refrigeration mode, first heat exchanger and second heat exchanger are the evaporimeter heat absorption, and the air that gets into the indoor set flows with first class to, and after the cooling of first heat exchanger earlier, further cooling through the second heat exchanger again, wherein the temperature of first heat exchanger is higher than the temperature ratio of second heat exchanger relatively, consequently carries out the heat transfer according to first class to the air and is favorable to improving heat exchange efficiency and heat transfer effect when air cooling.
Under the heating mode, first heat exchanger and second heat exchanger are the condenser and release heat, and the air that gets into the indoor set flows with first class, and after first heat exchanger heaies up, further heaies up through the second heat exchanger again, and wherein the temperature of first heat exchanger is higher than the temperature of second heat exchanger, consequently according to first class to carrying out the heat transfer to the air and be favorable to improving heat exchange efficiency and heat transfer effect when air heats.
Under dehumidification mode, first heat exchanger is the condenser, and the second heat exchanger is the evaporimeter, and the air that gets into the indoor set flows to the flow with the second class, and the air passes through microthermal second heat exchanger earlier, and the formation comdenstion water of giving off heat stays on the second heat exchanger, makes the humidity of air reduce the back, passes through the higher first heat exchanger of temperature again and absorbs the heat, can realize not blowing in the dehumidification of the air temperature regulation of indoor temperature also can realize indoor environment.
When the air outlet temperature is less than or equal to a first preset threshold value, the air outlet temperature of the air conditioner is indicated to be too low, the air conditioning system can be controlled to enter a first heat recovery mode, and the air outlet temperature of the air conditioner is prevented from being too low. Under first heat recovery mode, first heat exchanger is the condenser, the second heat exchanger is the evaporimeter, the air that gets into the indoor set flows to the flow with the second, the air is exothermic through microthermal second heat exchanger earlier and is passed through first heat exchanger heat absorption, the air-out temperature of first air outlet can rise, can realize the automatic dehumidification to indoor environment when avoiding the air-out temperature too low, thereby improve indoor environment's quality, can avoid the air of high temperature and high humidity to form a large amount of comdenstion waters on the second condenser simultaneously, air blowing phenomenon is prevented to appear.
When the air outlet temperature is greater than or equal to a second preset threshold value, the air outlet temperature of the air conditioner is indicated to be too high, the air conditioning system can be controlled to enter a second heat recovery mode, and the air outlet temperature of the air conditioner is prevented from being too high. Under the second heat recovery mode, first heat exchanger is the evaporimeter, the second heat exchanger is the condenser, the air that gets into the indoor set flows with the second flow, the air is after the second heat exchanger of high temperature absorbs the heat earlier, emit the heat through microthermal second heat exchanger again, the air-out temperature of first air outlet can reduce, owing to generally just can heat the operation when low temperature winter, and generally comparatively dry winter, can not dehumidify when avoiding the air-out high temperature through the aforesaid mode, thereby guarantee the humidity of indoor environment, improve the quality of indoor environment.
And S07, controlling the flow direction switching device to operate according to the target flow direction.
Specifically, when the target flow direction is the first flow direction, the flow direction switching device is controlled to switch to the first position; and when the target flow direction is the second flow direction, controlling the flow direction switching device to switch to the second position.
In this embodiment, through the above manner, the air flow direction in the indoor unit can be adjusted according to the requirements of different modes, so as to improve the heat exchange load requirements of the air conditioner in different modes.
In addition, the invention provides an air conditioner control device which can be applied to a heat pump system such as an air conditioner with a refrigeration regulation function.
In an embodiment of the present invention, referring to fig. 7, an air conditioning control apparatus includes: a processor 1001, such as a CPU, memory 1002, or the like. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1002, which is a readable storage medium, may include an air conditioner control program therein. In the apparatus shown in fig. 1, the processor 1001 may be configured to call an air-conditioning control program stored in the memory 1002, and perform operations of relevant steps of the air-conditioning control method in the following embodiments.
In addition, an embodiment of the present invention further provides a readable storage medium, where an air conditioning control program is stored, and the air conditioning control program, when executed by a processor, implements the relevant steps of any of the above air conditioning control methods.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (13)
1. An air conditioning system, characterized in that, air conditioning system includes indoor set, indoor set includes:
the indoor heat exchanger comprises a first heat exchanger and a second heat exchanger connected with the first heat exchanger in series;
the first throttling device is arranged between the first heat exchanger and the second heat exchanger;
a bypass valve disposed in parallel with the first heat exchanger;
the indoor unit further comprises a first shell, a second shell and a flow direction switching device, the second shell is arranged in the first shell, the first heat exchanger and the second heat exchanger are arranged in the second shell, the flow direction switching device is arranged between the first shell and the second shell, so that air entering the first shell is switched between a first flow direction and a second flow direction, the air flowing into the indoor unit in the first flow direction sequentially passes through the first heat exchanger and the second heat exchanger for heat exchange and then is discharged to an indoor environment, and the air flowing into the indoor unit in the second flow direction sequentially passes through the second heat exchanger and the first heat exchanger for heat exchange and then is discharged to the indoor environment.
2. The air conditioning system of claim 1, wherein the indoor unit further comprises:
one end of the bypass valve is connected with a refrigerant flow path between the first heat exchanger and the first throttling device, and the other end of the bypass valve is connected between the first refrigerant interface and the first heat exchanger;
one end of the second heat exchanger is connected with the second refrigerant interface, and the other end of the second heat exchanger is connected with the first throttling device;
and the second throttling device is arranged between the first refrigerant interface and the first heat exchanger.
3. The air conditioning system as claimed in claim 2, further comprising:
a compressor;
the outdoor heat exchanger comprises a third refrigerant interface and a fourth refrigerant interface;
one end of the third throttling device is connected with the third refrigerant interface, and the other end of the third throttling device is connected with the first refrigerant interface;
the four-way valve comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is connected with a gas return port of the compressor, the second interface is connected with a gas exhaust port of the compressor, the third interface is connected with a fourth refrigerant interface of the outdoor heat exchanger, and the fourth interface is connected with the second refrigerant interface.
4. The air conditioning system as claimed in claim 2 or 3, wherein the first refrigerant port and the second refrigerant port are disposed in the first housing, and the first housing is further provided with a first air inlet and a first air outlet;
the second shell is provided with a first ventilation opening and a second ventilation opening which are oppositely arranged, the first heat exchanger is arranged close to the first ventilation opening, and the second heat exchanger is arranged close to the second ventilation opening;
the first flow direction is that air flows through the first air inlet, the first ventilation opening, the second ventilation opening and the first air outlet in sequence, and the second flow direction is that air flows through the first air inlet, the second ventilation opening, the first ventilation opening and the first air outlet in sequence.
5. The air conditioning system according to claim 4, wherein a first air duct communicating the first ventilation opening and the second ventilation opening is formed in the second housing, a second air duct is formed between an outer wall of the second housing and an inner wall of the first housing, the second air duct is separated into a first sub-air duct and a second sub-air duct by the flow direction switching device, the first sub-air duct has a second air inlet and a second air outlet, and the second sub-air duct has a third air inlet and a third air outlet;
the second air inlet of the first sub-air duct is communicated with the first air inlet, and the third air outlet of the second sub-air duct is communicated with the first air outlet;
the flow direction switching device is configured to switch between a first position and a second position;
in the first position, the flow direction switching device closes the passage between the second air outlet and the second air outlet, and the flow direction switching device closes the passage between the third air inlet and the first air outlet, so that the air entering the first housing flows in the first flow direction;
in the second position, the flow direction switching device opens a passage between the second air outlet and the second air vent, and the flow direction switching device opens a passage between the third air inlet and the first air vent, so that the air entering the first housing flows in the second flow direction.
6. The air conditioning system as claimed in claim 5, wherein said first intake vent and said first outlet are oppositely disposed, said first vent is disposed adjacent said first intake vent, and said second vent is disposed adjacent said first outlet.
7. The air conditioning system as claimed in claim 6, wherein the flow direction switching device includes a first air damper and a second air damper, the first air damper includes a first rotating portion and a first baffle connected to the first rotating portion, the first rotating portion is rotatably connected to an edge of the first air inlet, and an end of the first baffle, which is far from the first rotating portion, is located in the first air vent;
the second air valve comprises a second rotating part and a second baffle connected with the second rotating part, the second rotating part is rotatably connected to the edge of the first air outlet, and one end, far away from the second rotating part, of the second baffle is located in the second air outlet;
the first baffle plate is limited at the first position when the first ventilation opening is close to the edge of the first rotating part, and the second baffle plate is limited at the second ventilation opening is close to the edge of the second rotating part;
the first baffle is limited at the edge of the first ventilation opening far away from the first rotating part, and the second baffle is limited at the edge of the second ventilation opening far away from the second rotating part to form the second position.
8. An air conditioning control method based on the air conditioning system according to any one of claims 1 to 7, characterized by comprising the steps of:
acquiring a first characteristic parameter of the heat load demand of a first heat exchanger;
and controlling the bypass valve to operate according to the first characteristic parameter.
9. The air conditioning control method according to claim 8, wherein when the air conditioning system includes a second throttle device, the air conditioning control method further comprises:
acquiring a current operation mode of an air conditioning system:
when the operation mode is a refrigeration mode or a heating mode, acquiring a second characteristic parameter of the heat load demand of the air conditioning system;
judging whether the second characteristic parameter is smaller than or equal to a preset threshold value or not;
if yes, controlling the second throttling device to close;
if not, controlling the second throttling device to be started.
10. The air conditioning control method as claimed in claim 9, wherein after the step of obtaining the current operation mode of the air conditioning system when the air conditioning system includes the flow direction switching device, the method further comprises:
determining a target flow direction of air in the indoor unit according to the operation mode;
and controlling the flow direction switching device to operate according to the target flow direction.
11. The air conditioning control method of claim 10, wherein the step of determining the target flow direction of the air in the indoor unit according to the operation mode comprises:
when the operation mode is a first mode, determining that the target flow direction is a first flow direction;
and when the operation mode is a second mode, determining that the target flow direction is a second flow direction.
12. An air conditioning control device characterized by comprising: a memory, a processor and an air conditioning control program stored on the memory and executable on the processor, the air conditioning control program when executed by the processor implementing the steps of the air conditioning control method of any one of claims 8 to 11.
13. A readable storage medium, characterized in that the readable storage medium has stored thereon an air-conditioning control program which, when executed by a processor, implements the steps of the air-conditioning control method according to any one of claims 8 to 11.
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| CN111102669B (en) * | 2019-12-31 | 2021-11-26 | 珠海格力电器股份有限公司 | Air conditioning system with multiple refrigerant loops and control method and device thereof |
| CN111578389B (en) * | 2020-05-09 | 2021-12-10 | 宁波奥克斯电气股份有限公司 | Outer machine heat exchanger, high-temperature-prevention control device and control method and air conditioner |
| CN114061055B (en) * | 2020-07-28 | 2023-03-31 | 广东美的制冷设备有限公司 | Air conditioner, control method, air conditioner control device and readable storage medium |
| CN114087745B (en) * | 2020-07-29 | 2023-09-26 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method, control device and readable storage medium |
| CN114688617A (en) * | 2020-12-31 | 2022-07-01 | 广东美的制冷设备有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
| CN114484916A (en) * | 2021-12-31 | 2022-05-13 | 重庆再升净化设备有限公司 | Air conditioning system |
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