CN110608511A - Air conditioner heating control method, controller and air conditioner - Google Patents
Air conditioner heating control method, controller and air conditioner Download PDFInfo
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- CN110608511A CN110608511A CN201910869112.3A CN201910869112A CN110608511A CN 110608511 A CN110608511 A CN 110608511A CN 201910869112 A CN201910869112 A CN 201910869112A CN 110608511 A CN110608511 A CN 110608511A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000003507 refrigerant Substances 0.000 claims abstract description 171
- 238000010257 thawing Methods 0.000 claims abstract description 68
- 238000001704 evaporation Methods 0.000 claims description 22
- 230000008020 evaporation Effects 0.000 claims description 20
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004378 air conditioning Methods 0.000 description 19
- 230000008859 change Effects 0.000 description 6
- 238000005286 illumination Methods 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
- F24F2110/22—Humidity of the outside air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to an air conditioner heating control method, a controller and an air conditioner, and belongs to the technical field of air conditioner heating. The application includes: acquiring weather parameters, wherein the weather parameters comprise: temperature and humidity; determining whether to perform normal heating operation or defrosting heating operation according to the weather parameters; and performing heating operation control according to the determined result, wherein in normal heating operation, all the refrigerant output by the compressor flows to the indoor heat exchanger, in defrosting heating operation, one part of the refrigerant flows to the indoor heat exchanger, the rest of the refrigerant flows to the part of the heat exchange units determined to be defrosted in the outdoor heat exchanger, and the rest of the heat exchange units in the outdoor heat exchanger are in a normal working state. Through the application, self-adaptive continuous heating control can be realized by utilizing weather parameters, the switching opportunity of normal heating operation and defrosting heating operation can be well mastered, and the heating effect can be improved, and the comfort experience of users can be improved.
Description
Technical Field
The application belongs to the technical field of air conditioner heating, and particularly relates to an air conditioner heating control method, a controller and an air conditioner.
Background
When the air conditioning system is in heating operation, an indoor machine heat exchanger of the air conditioning system is used as a condenser, and an outdoor machine heat exchanger of the air conditioning system is used as an evaporator. The frosting phenomenon can occur on the surface of the outdoor heat exchanger under the influence of weather factors. Therefore, the air conditioning system is switched to a cooling operation mode after heating for a period of time, and defrosting of the outdoor heat exchanger is performed by means of high-temperature and high-pressure refrigerant vapor discharged from the compressor. Air conditioning system is in refrigeration cycle when changing the white operation, and air conditioning system need be used for changing the frost with the heat absorption of indoor side, and the unit is periodically changed the frost or frequently changes the frost and can make the unit can't heat in succession, leads to indoor side temperature great fluctuation to appear, changes the frost at every turn and then indoor side temperature's fluctuation is big more for a long time, and then influences user's travelling comfort and experiences.
Disclosure of Invention
In order to overcome the problems in the related art at least to a certain extent, the application provides an air conditioner heating control method, a controller and an air conditioner, and aims to realize self-adaptive continuous heating control by using weather parameters to improve the heating effect and further improve the comfort experience of users.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect,
the application provides an air conditioner heating control method, which comprises the following steps:
acquiring weather parameters, wherein the weather parameters comprise: temperature and humidity;
determining whether to perform normal heating operation or defrosting heating operation according to the weather parameters;
and performing heating operation control according to a determined result, wherein in the normal heating operation, all the refrigerant output by the compressor flows to the indoor heat exchanger, in the defrosting heating operation, one part of the refrigerant flows to the indoor heat exchanger, the rest of the refrigerant flows to the part of the heat exchange units determined to be defrosted in the outdoor heat exchanger, and the rest of the heat exchange units in the outdoor heat exchanger are in a normal working state.
Further, the acquiring the weather parameters comprises:
and acquiring an operation mode, and acquiring the weather parameters when the operation mode is a heating mode.
Further, the acquiring the weather parameters comprises:
acquiring the weather parameters detected by a sensor configured on the outdoor unit of the air conditioner, or,
and acquiring the weather parameters obtained by the air conditioner through a network.
Further, the determining whether to perform the normal heating operation or the defrosting heating operation according to the weather parameter includes:
and comparing the temperature with a preset threshold temperature to obtain a temperature comparison result, comparing the humidity with a preset threshold humidity to obtain a humidity comparison result, and determining whether to perform normal heating operation or defrosting heating operation according to the temperature comparison result and the humidity comparison result.
Further, the determining whether to perform the normal heating operation or the defrosting heating operation according to the weather parameter includes:
and when the temperature comparison result is that the temperature is greater than the preset threshold temperature and the humidity comparison result is that the humidity is less than the threshold humidity, determining that the normal heating operation is performed.
Further, the determining whether to perform the normal heating operation or the defrosting heating operation according to the weather parameter includes:
when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, acquiring the refrigerant evaporation temperature;
when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, if the refrigerant evaporation temperature is less than or equal to a preset threshold evaporation temperature, determining that the defrosting heating operation is performed; or,
and when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, if the refrigerant evaporation temperature is greater than the preset threshold evaporation temperature and the temperature comparison result shows that the temperature is greater than the preset threshold temperature, determining that the normal heating operation is performed.
Further, the performing of the heating operation control according to the determined result includes:
and when the normal heating operation is determined, controlling all the refrigerants to flow to the indoor heat exchanger.
Further, the performing of the heating operation control according to the determined result includes:
when the defrosting and heating operation is determined, controlling a part of the refrigerant to flow to the indoor heat exchanger, and reducing the air outlet speed of the indoor unit; and
and alternately controlling part of the heat exchange units in the outdoor heat exchanger to be in a defrosting state, and simultaneously controlling the rest of the refrigerant to flow to the part of the heat exchange units determined to be in the defrosting state.
In a second aspect of the present invention,
the present application provides a controller comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of any of the above methods.
In a third aspect,
the application provides an air conditioner, includes:
the controller as described above; and
the system comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger and a switching module, wherein the compressor, the indoor heat exchanger, the outdoor heat exchanger and the switching module are connected to form a refrigerant circulation loop;
the switching module is used for being controlled by the controller to enable the air conditioner to execute the normal heating operation or the defrosting heating operation when the air conditioner is in heating operation;
the outdoor heat exchanger is provided with a plurality of heat exchange units which are arranged in parallel, and the plurality of heat exchange units of the outdoor heat exchanger are divided into two parts, so that when the air conditioner is in defrosting and heating operation, part of the heat exchange units in the outdoor heat exchanger are in a defrosting state, and the rest of the heat exchange units are in a normal working state.
Further, the switching module includes:
a first valve port of the first four-way valve is connected with a refrigerant outlet of the compressor;
one end of the first refrigerant flow path is connected with a second valve port of the first four-way valve, the first refrigerant flow path is branched to form a first refrigerant branch flow path and a second refrigerant branch flow path, the first refrigerant branch flow path is connected to one part of heat exchange units of the outdoor heat exchanger, and the second refrigerant branch flow path is connected to the other part of heat exchange units of the outdoor heat exchanger;
the first control valve is arranged on the first refrigerant branch pipeline;
the second control valve is arranged on the second refrigerant branch pipeline;
a second refrigerant flow path;
a third valve port and a fourth valve port of the first four-way valve are respectively connected to the second refrigerant flow path;
one end of the second refrigerant flow path is branched to form a third refrigerant branch flow path and a fourth refrigerant branch flow path, the third refrigerant branch flow path is connected to the part of the heat exchange units of the outdoor heat exchanger, and the fourth refrigerant branch flow path is connected to the rest of the heat exchange units of the outdoor heat exchanger;
the other end of the second refrigerant flow path is connected with a refrigerant inlet of the compressor;
the third control valve is arranged on the third refrigerant branch pipeline;
the fourth control valve is arranged on the fourth refrigerant branch pipeline;
a fifth control valve provided in a flow path where a third valve port of the first four-way valve is connected to the second refrigerant flow path;
a second four-way valve, a first valve port of the second four-way valve is connected with a refrigerant outlet of the compressor,
a second valve port of the second four-way valve is connected with the indoor heat exchanger;
a third valve port and a fourth valve port of the second four-way valve are respectively connected to the second refrigerant flow path;
and a sixth control valve provided in a flow path in which a third valve port of the second four-way valve is connected to the second refrigerant flow path.
This application adopts above technical scheme, possesses following beneficial effect at least:
through this application, change under the frost heating operation, the air conditioner still heats to indoor, the air conditioner utilizes weather parameter when heating, it is the operation of normally heating to control, still change the frost heating operation, on the one hand, can realize that the air conditioner does not break off to indoor heating, guarantee to indoor continuous heating, on the other hand, utilize weather parameter can realize self-adaptation continuous heating control, help holding the switching opportunity of normal heating operation and change the frost heating operation better, and then help promoting the heating effect, and promote user's travelling comfort and experience.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of an air conditioning flow path provided in an embodiment of the present application during normal heating operation;
fig. 2 is a schematic view of an air conditioning flow path during defrosting and heating operation according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a heating control method of an air conditioner according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a controller according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to facilitate a better understanding of the method embodiment aspects of the present application. An embodiment of an air conditioning flow path is provided first, as shown in fig. 1 and fig. 2, fig. 1 is a schematic view of the air conditioning flow path provided in an embodiment of the present application when the air conditioning flow path is in normal heating operation, and fig. 2 is a schematic view of the air conditioning flow path provided in an embodiment of the present application when the air conditioning flow path is in defrosting heating operation. The normal heating operation and the defrosting heating operation in the heating operation of the present application will be further described below with reference to fig. 1 and 2.
As shown in fig. 1 and 2, the present application provides an air conditioning flow path, the air conditioning flow path 1 including:
the air conditioner comprises a compressor 11, an indoor heat exchanger 12, an outdoor heat exchanger 13 and a switching module 14, wherein the compressor 11, the indoor heat exchanger 12, the outdoor heat exchanger 13 and the switching module 14 are connected to form a refrigerant circulation loop;
the switching module 14 is configured to be controlled by the controller to enable the air conditioner to perform a normal heating operation or a defrosting heating operation when the air conditioner performs a heating operation;
the outdoor heat exchanger 13 is provided with a plurality of heat exchange units, the heat exchange units are arranged in parallel, and the heat exchange units of the outdoor heat exchanger 13 are divided into two parts (13a, 13b) so that when the air conditioner is in defrosting and heating operation, part of the heat exchange units in the outdoor heat exchanger 13 are in a defrosting state, and the rest of the heat exchange units are in a normal working state.
Further, the switching module 14 includes:
a first four-way valve 101, a first valve port 101a of the first four-way valve 101 being connected to a refrigerant outlet of the compressor 11;
a first refrigerant flow path 102, one end of which is connected to the second valve port 101b of the first four-way valve 101, the first refrigerant flow path 102 being branched to form a first refrigerant branch flow path 102a and a second refrigerant branch flow path 102b, the first refrigerant branch flow path 102a being connected to a part of the heat exchange units 13a of the outdoor heat exchanger 13, and the second refrigerant branch flow path 102b being connected to the remaining part of the heat exchange units 13b of the outdoor heat exchanger 13;
a first control valve 103 provided in the first refrigerant branch passage 102 a;
a second control valve 104 provided in the second refrigerant branch flow path 102 b;
a second refrigerant passage 105;
a third port 101c and a fourth port 101d of the first four-way valve 101 are connected to the second refrigerant passage 105, respectively;
one end of the second refrigerant flow path 105 is branched to form a third refrigerant branch flow path 105a and a fourth refrigerant branch flow path 105b, the third refrigerant branch flow path 105a is connected to the part of the heat exchange units 13a of the outdoor heat exchanger 13, and the fourth refrigerant branch flow path 105b is connected to the rest of the heat exchange units 13b of the outdoor heat exchanger 13;
the other end of the second refrigerant flow path 105 is connected to a refrigerant inlet of the compressor 11;
a third control valve 106 provided in the third refrigerant branch flow path 105 a;
a fourth control valve 107 provided in the fourth refrigerant branch flow path 105 b;
a fifth control valve 108 provided in a flow path in which the third port 101c of the first four-way valve 101 is connected to the second refrigerant flow path 105;
a second four-way valve 109, a first valve port 109a of the second four-way valve 109 is connected with a refrigerant outlet of the compressor 11,
a third port 109c of the second four-way valve 109 is connected to the indoor heat exchanger 12;
a second port 109b and a fourth port 109d of the second four-way valve 109 are connected to the second refrigerant passage 105, respectively;
and a sixth control valve 110 provided in a flow path in which the second port 109b of the second four-way valve 109 is connected to the second refrigerant flow path 105.
Fig. 1 shows an air conditioning flow path in a normal heating operation, and in the normal heating operation, the following control may be performed: the first four-way valve 101 and the second four-way valve 109 are both in an energized state, the first port 101a and the third port 101c of the first four-way valve 101 are in conduction, and the second port 101b and the fourth port 101d of the first four-way valve 101 are in conduction; the first port 109a and the third port 109c of the second four-way valve 109 are brought into conduction, and the second port 109b and the fourth port 109d of the second four-way valve 109 are brought into conduction; the first control valve 103 and the fourth control valve 107 are in an electrically conductive state; the second control valve 104, the third control valve 106, the fifth control valve 108, and the sixth control valve 110 are in a de-energized closed state.
Because the fifth control valve 108 is in a power-off closed state, the high-temperature and high-pressure refrigerant compressed by the compressor 11 cannot flow out from the first valve port 101a and the third valve port 101c which are communicated with each other by the first four-way valve 101, so that the high-temperature and high-pressure refrigerant compressed by the compressor 11 all flows to the second four-way valve 109, passes through the first valve port 109a and the third valve port 109c which are communicated with each other, and then enters the indoor heat exchanger 12, so that all the refrigerant of the compressor 11 is used for heating the indoor, the condensed medium-temperature and medium-pressure refrigerant enters the outdoor heat exchanger 13 for evaporation and heat exchange after passing through the indoor electronic expansion valves (111a, 111b) and the outdoor electronic expansion valves (112a, 112b) to be throttled sequentially, and under the normal heating mode, the two heat exchange units (13a, 13b) of the outdoor heat exchanger 13 are both used as evaporators, because the first control valve, the third control valve 106 is closed, the refrigerant flowing out of the heat exchange unit 13a passes through the first control valve 103 which is turned on, the fourth control valve 107 is turned on, the second control valve 104 is closed, the refrigerant flowing out of the heat exchange unit 13b passes through the fourth control valve 107 which is turned on, and finally, the refrigerants flowing out of the heat exchange unit 13a and the heat exchange unit 13b are collectively flowed to the refrigerant inlet of the compressor 11 through the second refrigerant passage 105.
In practical applications, the second refrigerant flow path 105 may be connected to a refrigerant inlet of the compressor 11 through the gas-liquid separator 15.
Fig. 2 shows an air conditioning flow path in the defrosting and heating operation, and when the normal heating operation is switched to the defrosting and heating operation, the following control may be performed: when the first four-way valve 101 is changed to the power-off state, the first port 101a and the second port 101b of the first four-way valve 101 are brought into conduction, and the third port 101c and the fourth port 101d of the first four-way valve 101 are brought into conduction. The other parts are kept unchanged, namely: the second four-way valve 109 is in an energized state, the first port 109a and the third port 109c of the second four-way valve 109 are brought into conduction, and the second port 109b and the fourth port 109d of the second four-way valve 109 are brought into conduction; the first control valve 103 and the fourth control valve 107 are in an electrically conductive state; the second control valve 104, the third control valve 106, the fifth control valve 108, and the sixth control valve 110 are in a de-energized closed state.
Because the first valve port 101a and the second valve port 101b of the first four-way valve 101 are communicated, the high-temperature and high-pressure refrigerant compressed by the compressor 11 forms two parts to be output, and a part of the refrigerant passes through the first valve port 109a and the third valve port 109c of the second four-way valve 109 and then enters the indoor heat exchanger 12 to heat the indoor. Another part of the refrigerant flows out through the first valve port 101a and the second valve port 101b which are conducted by the first four-way valve 101, and the first control valve 103 is conducted, while the second control valve 104 is closed, and the another part of the refrigerant is selectively flowed to the heat exchange unit 13a through the conducted first control valve 103, so that the heat exchange unit 13a becomes a condenser for use, and the heat exchange unit 13a of the outdoor heat exchanger 13 is defrosted. The refrigerant flowing out of the indoor heat exchanger 12 passes through the indoor electronic expansion valves (111a, 111b), and the refrigerant flowing out of the heat exchange unit 13a passes through the outdoor electronic expansion valve 112a, and then the refrigerant is throttled by the outdoor electronic expansion valve 112b, and then enters the heat exchange unit 13b of the outdoor heat exchanger 13, where the refrigerant is evaporated and absorbs the external heat in the heat exchange unit 13 b. When the fourth control valve 107 is turned on and the second control valve 104 is closed, the refrigerant flowing out of the heat exchange unit 13b is selectively passed through the turned-on fourth control valve 107 and flows to the refrigerant inlet of the compressor 11 through the second refrigerant passage 105.
The heat exchange units 1 and 2 of the outdoor heat exchanger 13 are alternately controlled to defrost, that is, after the heat exchange unit 13a is controlled to defrost, the heat exchange unit 13b is controlled to defrost, and the following control can be performed: keeping the first four-way valve 101 in a power-off state, in which case the first port 101a and the second port 101b of the first four-way valve 101 are in conduction, and the third port 101c and the fourth port 101d of the first four-way valve 101 are in conduction; the second four-way valve 109 is in an energized state, the first port 109a and the third port 109c of the second four-way valve 109 are brought into conduction, and the second port 109b and the fourth port 109d of the second four-way valve 109 are brought into conduction; the fifth control valve 108 and the sixth control valve 110 are still in a de-energized closed state. And the second control valve 104 and the third control valve 106 are changed to be in the electrically conductive state; the first control valve 103 and the fourth control valve 107 are changed to be in the power-off closed state.
Similarly, because the first valve port 101a and the second valve port 101b of the first four-way valve 101 are communicated, the high-temperature and high-pressure refrigerant compressed by the compressor 11 forms two parts to be output, and a part of the refrigerant passes through the first valve port 109a and the third valve port 109c of the second four-way valve 109 and then enters the indoor heat exchanger 12 to heat the indoor. Another part of the refrigerant flows out through the first valve port 101a and the second valve port 101b, which are conducted by the first four-way valve 101, and the first control valve 103 is closed, while the second control valve 104 is conducted, and the another part of the refrigerant is selectively flowed to the heat exchange unit 13b through the second control valve 104, so that the heat exchange unit 13b of the outdoor heat exchanger 13 becomes a condenser for use, and the heat exchange unit 13b performs defrosting. The refrigerant flowing out of the indoor heat exchanger 12 passes through the indoor electronic expansion valves (111a, 111b), and the refrigerant flowing out of the heat exchange unit 13b passes through the outdoor electronic expansion valve 112b, and then the refrigerant is collected, and then enters the heat exchange unit 13a of the outdoor heat exchanger 13 through the outdoor electronic expansion valve 112a, and is evaporated in the heat exchange unit 13a to absorb the external heat. When the third control valve 106 is turned on and the first control valve 103 is turned off and on, the refrigerant flowing out of the heat exchange unit 13a is selectively passed through the turned-on third control valve 106 and flows to the refrigerant inlet of the compressor 11 through the second refrigerant passage 105.
Through the description of the related embodiment, the indoor heating can be realized even in a defrosting state, and further, the indoor heating can be continuously realized, and the indoor heating is ensured not to be interrupted.
It should be noted that the above description is only used for the purpose of implementing continuous heating in a room, and is not used to form a limitation, and the description is for the purpose of ensuring uninterrupted heating in a room.
What needs to be further considered is how to better grasp the switching time of the normal heating operation and the defrosting heating operation to better improve the heating effect, and therefore, the following related embodiment schemes are also provided in the application.
Fig. 3 is a schematic flowchart of an air-conditioning heating control method according to an embodiment of the present application, and as shown in fig. 3, the air-conditioning heating control method includes the following steps:
step S301, obtaining weather parameters, wherein the weather parameters comprise: temperature and humidity.
Specifically, the weather parameters may include: the frosting condition of the heat exchanger of the outdoor unit of the air conditioner can be judged according to weather parameters such as temperature, humidity, illumination and wind speed.
In one embodiment, the obtaining weather parameters includes:
and acquiring an operation mode, and acquiring the weather parameters when the operation mode is a heating mode.
Specifically, when a user selects a heating mode on the remote controller to control the air conditioner, the air conditioner acquires an instruction of the heating mode sent by the remote controller, and further enters the heating mode to heat the indoor, and meanwhile, the instruction of the heating mode sent by the remote controller also triggers the air conditioner to execute an action step of acquiring weather parameters.
In one embodiment, the obtaining weather parameters includes:
acquiring the weather parameters detected by a sensor configured on the outdoor unit of the air conditioner, or,
and acquiring the weather parameters obtained by the air conditioner through a network.
Specifically, the outdoor unit of the air conditioner may be configured with a sensor for detecting a weather parameter, such as a temperature sensor, a humidity sensor, an illumination sensor, a wind speed sensor, and the like, and further detect the weather parameter, such as a corresponding temperature, a corresponding humidity, an illumination, a corresponding wind speed, and the like, through various functional sensors. For the intelligent air conditioner, the weather parameters may be obtained through a network, for example, the weather forecast parameters are obtained, and the weather parameters may include the current weather parameter and the weather forecast parameters for a future period of time.
And step S302, determining whether to perform normal heating operation or defrosting heating operation according to the weather parameters.
In specific application, comprehensive analysis is performed according to weather parameters such as temperature, humidity, illumination, wind speed and the like, and the frosting condition of the heat exchanger of the air conditioner outdoor unit can be judged, for example, the frosting condition of the heat exchanger of the air conditioner outdoor unit can be judged if the outdoor weather condition is low in temperature, low in humidity, high in illumination and high in wind speed, and the frosting difficulty of the heat exchanger of the air conditioner outdoor unit can be judged. Therefore, whether normal heating operation or defrosting heating operation is performed is determined by using the weather parameters, adaptive continuous heating control can be realized, switching time of the normal heating operation and the defrosting heating operation can be well mastered, heating effect can be improved, and comfort experience of users can be improved. The following is further illustrated by the relevant examples.
In one embodiment, the determining whether to perform the normal heating operation or the defrosting heating operation according to the weather parameter includes:
and comparing the temperature with a preset threshold temperature to obtain a temperature comparison result, comparing the humidity with a preset threshold humidity to obtain a humidity comparison result, and determining whether to perform normal heating operation or defrosting heating operation according to the temperature comparison result and the humidity comparison result.
Specifically, the preset threshold temperature and the preset threshold humidity are used as boundary values for judging the frosting condition of the outdoor unit heat exchanger, in specific application, when the temperature is lower than the preset threshold temperature, the frosting of the outdoor unit heat exchanger is facilitated, and when the humidity is higher than the preset threshold humidity, the frosting of the outdoor unit heat exchanger is facilitated. Thus, it is possible to determine whether to perform the normal heating operation or the defrosting heating operation according to a temperature comparison result compared with the preset threshold temperature and a humidity comparison result compared with the preset threshold humidity.
Further, the determining whether to perform the normal heating operation or the defrosting heating operation according to the weather parameter includes:
and when the temperature comparison result is that the temperature is greater than the preset threshold temperature and the humidity comparison result is that the humidity is less than the threshold humidity, determining that the normal heating operation is performed.
Specifically, the outdoor weather condition is a condition that the temperature is high and the humidity is low in winter, for example, the outdoor temperature is above zero five degrees, and the air is dry, and in this weather, the air conditioner performs indoor heating, and the surface of the outdoor heat exchanger is difficult to frost, so that when the temperature is higher than the preset threshold temperature as a result of temperature comparison and the humidity is lower than the threshold humidity as a result of humidity comparison, it can be determined that the outdoor heat exchanger is in a frostless state, and it is determined that normal heating operation is performed indoors.
Further, the determining whether to perform the normal heating operation or the defrosting heating operation according to the weather parameter includes:
when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, acquiring the refrigerant evaporation temperature;
when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, if the refrigerant evaporation temperature is less than or equal to a preset threshold evaporation temperature, determining that the defrosting heating operation is performed; or,
and when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, if the refrigerant evaporation temperature is greater than the preset threshold evaporation temperature and the temperature comparison result shows that the temperature is greater than the preset threshold temperature, determining that the normal heating operation is performed.
In rainy and snowy weather in winter, under the weather, the air humidity is great, be more favorable to outdoor heat exchanger frosting, therefore, when humidity comparison result is that humidity is greater than or equal to threshold humidity, further acquire refrigerant evaporating temperature, whether outdoor heat exchanger frosts is judged to combine refrigerant evaporating temperature again, can make the judgement of confirming whether to carry out normal heating operation or to carry out the operation of defrosting heating more accurate, help holding the switching opportunity of normal heating operation and the operation of defrosting heating better, and then help promoting the effect of heating.
Specifically, in winter, the air conditioner heats the indoor space, and when the humidity comparison result is that the humidity is greater than or equal to the threshold humidity, if the refrigerant evaporation temperature is less than or equal to the preset threshold evaporation temperature, the defrosting and heating operation is determined to be performed, the frosting state of the heat exchanger of the outdoor unit can be judged, and then the defrosting and heating operation is determined to be performed.
And when the humidity comparison result is that the humidity is greater than or equal to the threshold humidity, the refrigerant evaporation temperature is greater than the preset threshold evaporation temperature, and the temperature comparison result is that the temperature is greater than the preset threshold temperature, under the former condition, the frosting of the outdoor heat exchanger cannot be caused, the frostless state of the outdoor heat exchanger can be judged, and then the normal heating operation is determined to be required.
And step S303, heating operation control is performed according to a determined result, wherein in the normal heating operation, all the refrigerant output by the compressor flows to the indoor heat exchanger, in the defrosting heating operation, a part of the refrigerant flows to the indoor heat exchanger, the rest of the refrigerant flows to the partial heat exchange units determined to be defrosted in the outdoor heat exchanger, and the rest of the heat exchange units in the outdoor heat exchanger are in a normal working state.
Further, the performing of the heating operation control according to the determined result includes:
and when the normal heating operation is determined, controlling all the refrigerants to flow to the indoor heat exchanger.
Specifically, when the air conditioner is in normal heating operation, all refrigerants output by the compressor are controlled to flow to the indoor heat exchanger, so that all refrigerants are used for heating the indoor space, and the indoor temperature is guaranteed.
Further, the performing of the heating operation control according to the determined result includes:
when the defrosting and heating operation is determined, controlling a part of the refrigerant to flow to the indoor heat exchanger, and reducing the air outlet speed of the indoor unit; and
and alternately controlling part of the heat exchange units in the outdoor heat exchanger to be in a defrosting state, and simultaneously controlling the rest of the refrigerant to flow to the part of the heat exchange units determined to be in the defrosting state.
Specifically, the air conditioner is going on when defrosting heats the operation, the refrigerant of compressor output is divided into two parts and is exported, and some wherein flow direction indoor heat exchanger guarantees still to indoor heating, makes to heat uninterrupted, reduces indoor set air-out wind speed simultaneously, helps promoting the heat exchange efficiency of indoor set, and the indoor set air-out temperature that makes promotes, and then guarantees that indoor temperature can not appear fluctuating by a wide margin, can satisfy user's travelling comfort and experience the demand. The method comprises the steps of alternately controlling part of heat exchange units in the outdoor heat exchanger to be in a defrosting state, and simultaneously controlling the rest of heat exchange units to be in a normal working state, specifically, when the outdoor heat exchanger is judged to be frosted, dividing the heat exchange units in the outdoor heat exchanger into two parts, enabling the other part of refrigerant output by the compressor to flow to the part of heat exchange units determined to be in the defrosting state, enabling the part of heat exchange units to be used as a condenser, condensing to release heat, achieving defrosting of the part of heat exchange units, enabling the rest of heat exchange units to be in the normal working state, and enabling the rest of heat exchange units to be still used as an evaporator. For the alternative control, the alternation can be performed once at regular intervals, part of the heat exchange units which are in the defrosting state before are changed into the evaporator again for use, and meanwhile, part of the heat exchange units which are still used as the evaporator before are changed into the defrosting state for defrosting. In a particular application, a particular number of alternations may be set.
Through this application, change under the frost heating operation, the air conditioner still heats to indoor, the air conditioner utilizes weather parameter when heating, it is the operation of normally heating to control, still change the frost heating operation, on the one hand, can realize that the air conditioner does not break off to indoor heating, guarantee to indoor continuous heating, on the other hand, utilize weather parameter can realize self-adaptation continuous heating control, help holding the switching opportunity of normal heating operation and change the frost heating operation better, and then help promoting the heating effect, and then promote user's travelling comfort and experience.
Fig. 4 is a schematic structural diagram of a controller according to an embodiment of the present application, and as shown in fig. 4, the controller 4 includes:
a memory 401 having an executable program stored thereon;
a processor 402 for executing the executable program in the memory 401 to implement the steps of any of the above methods.
With regard to the controller 4 in the above-described embodiment, the specific manner in which the processor 402 thereof executes the program in the memory 401 has been described in detail in the embodiment related to the method, and will not be described in detail here.
The present application also provides an air conditioner, which includes, in combination with fig. 1, 2 and 4:
the controller 4 as described above; and
the system comprises a compressor 11, an indoor heat exchanger 12, an outdoor heat exchanger 13 and a switching module 14, wherein the compressor 11, the indoor heat exchanger 12, the outdoor heat exchanger 13 and the switching module 14 are connected to form a refrigerant circulation loop 1;
the switching module 14 is configured to be controlled by the controller to enable the air conditioner to perform a normal heating operation or a defrosting heating operation when the air conditioner performs a heating operation;
the outdoor heat exchanger 13 is provided with a plurality of heat exchange units, the heat exchange units are arranged in parallel, and the heat exchange units of the outdoor heat exchanger 13 are divided into two parts (13a, 13b) so that when the air conditioner is in defrosting and heating operation, part of the heat exchange units in the outdoor heat exchanger 13 are in a defrosting state, and the rest of the heat exchange units are in a normal working state.
Further, the switching module 14 includes:
a first four-way valve 101, a first valve port 101a of the first four-way valve 101 being connected to a refrigerant outlet of the compressor 11;
a first refrigerant flow path 102, one end of which is connected to the second valve port 101b of the first four-way valve 101, the first refrigerant flow path 102 being branched to form a first refrigerant branch flow path 102a and a second refrigerant branch flow path 102b, the first refrigerant branch flow path 102a being connected to a part of the heat exchange units 13a of the outdoor heat exchanger 13, and the second refrigerant branch flow path 102b being connected to the remaining part of the heat exchange units 13b of the outdoor heat exchanger 13;
a first control valve 103 provided in the first refrigerant branch passage 102 a;
a second control valve 104 provided in the second refrigerant branch flow path 102 b;
a second refrigerant passage 105;
a third port 101c and a fourth port 101d of the first four-way valve 101 are connected to the second refrigerant passage 105, respectively;
one end of the second refrigerant flow path 105 is branched to form a third refrigerant branch flow path 105a and a fourth refrigerant branch flow path 105b, the third refrigerant branch flow path 105a is connected to the part of the heat exchange units 13a of the outdoor heat exchanger 13, and the fourth refrigerant branch flow path 105b is connected to the rest of the heat exchange units 13b of the outdoor heat exchanger 13;
the other end of the second refrigerant flow path 105 is connected to a refrigerant inlet of the compressor 11;
a third control valve 106 provided in the third refrigerant branch flow path 105 a;
a fourth control valve 107 provided in the fourth refrigerant branch flow path 105 b;
a fifth control valve 108 provided in a flow path in which the third port 101c of the first four-way valve 101 is connected to the second refrigerant flow path 105;
a second four-way valve 109, a first valve port 109a of the second four-way valve 109 is connected with a refrigerant outlet of the compressor 11,
a third port 109c of the second four-way valve 109 is connected to the indoor heat exchanger 12;
a second port 109b and a fourth port 109d of the second four-way valve 109 are connected to the second refrigerant passage 105, respectively;
and a sixth control valve 110 provided in a flow path in which the second port 109b of the second four-way valve 109 is connected to the second refrigerant flow path 105.
With regard to the air conditioner in the above embodiment, the specific implementation thereof has been described in detail in the embodiment related to the method, and will not be elaborated herein.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. Further, "connected" as used herein may include wirelessly connected. The term "and/or" is used to include any and all combinations of one or more of the associated listed items.
Any process or method descriptions in flow charts or otherwise described herein may be understood as: represents modules, segments or portions of code which include one or more executable instructions for implementing specific logical functions or steps of a process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. An air conditioner heating control method is characterized by comprising the following steps:
acquiring weather parameters, wherein the weather parameters comprise: temperature and humidity;
determining whether to perform normal heating operation or defrosting heating operation according to the weather parameters;
and performing heating operation control according to a determined result, wherein in the normal heating operation, all the refrigerant output by the compressor flows to the indoor heat exchanger, in the defrosting heating operation, one part of the refrigerant flows to the indoor heat exchanger, the rest of the refrigerant flows to the part of the heat exchange units determined to be defrosted in the outdoor heat exchanger, and the rest of the heat exchange units in the outdoor heat exchanger are in a normal working state.
2. The method of claim 1, wherein the obtaining weather parameters comprises:
and acquiring an operation mode, and acquiring the weather parameters when the operation mode is a heating mode.
3. The method of claim 1, wherein the obtaining weather parameters comprises:
acquiring the weather parameters detected by a sensor configured on the outdoor unit of the air conditioner, or,
and acquiring the weather parameters obtained by the air conditioner through a network.
4. The method of claim 1, wherein determining whether to perform a normal heating operation or a defrosting heating operation according to the weather parameter comprises:
and comparing the temperature with a preset threshold temperature to obtain a temperature comparison result, comparing the humidity with a preset threshold humidity to obtain a humidity comparison result, and determining whether to perform normal heating operation or defrosting heating operation according to the temperature comparison result and the humidity comparison result.
5. The method of claim 4, wherein determining whether to perform a normal heating operation or a defrosting heating operation according to the weather parameter comprises:
and when the temperature comparison result is that the temperature is greater than the preset threshold temperature and the humidity comparison result is that the humidity is less than the threshold humidity, determining that the normal heating operation is performed.
6. The method of claim 4, wherein determining whether to perform a normal heating operation or a defrosting heating operation according to the weather parameter comprises:
when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, acquiring the refrigerant evaporation temperature;
when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, if the refrigerant evaporation temperature is less than or equal to a preset threshold evaporation temperature, determining that the defrosting heating operation is performed; or,
and when the humidity comparison result shows that the humidity is greater than or equal to the threshold humidity, if the refrigerant evaporation temperature is greater than the preset threshold evaporation temperature and the temperature comparison result shows that the temperature is greater than the preset threshold temperature, determining that the normal heating operation is performed.
7. The method according to any one of claims 1 to 6, wherein the performing of the heating operation control according to the result of the determination includes:
and when the normal heating operation is determined, controlling all the refrigerants to flow to the indoor heat exchanger.
8. The method according to any one of claims 1 to 6, wherein the performing of the heating operation control according to the result of the determination includes:
when the defrosting and heating operation is determined, controlling a part of the refrigerant to flow to the indoor heat exchanger, and reducing the air outlet speed of the indoor unit; and
and alternately controlling part of the heat exchange units in the outdoor heat exchanger to be in a defrosting state, and simultaneously controlling the rest of the refrigerant to flow to the part of the heat exchange units determined to be in the defrosting state.
9. A controller, comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any one of claims 1-8.
10. An air conditioner, comprising:
the controller of claim 9; and
the system comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger and a switching module, wherein the compressor, the indoor heat exchanger, the outdoor heat exchanger and the switching module are connected to form a refrigerant circulation loop;
the switching module is used for being controlled by the controller to enable the air conditioner to execute the normal heating operation or the defrosting heating operation when the air conditioner is in heating operation;
the outdoor heat exchanger is provided with a plurality of heat exchange units which are arranged in parallel, and the plurality of heat exchange units of the outdoor heat exchanger are divided into two parts, so that when the air conditioner is in defrosting and heating operation, part of the heat exchange units in the outdoor heat exchanger are in a defrosting state, and the rest of the heat exchange units are in a normal working state.
11. The air conditioner of claim 10, wherein the switching module comprises:
a first valve port of the first four-way valve is connected with a refrigerant outlet of the compressor;
one end of the first refrigerant flow path is connected with a second valve port of the first four-way valve, the first refrigerant flow path is branched to form a first refrigerant branch flow path and a second refrigerant branch flow path, the first refrigerant branch flow path is connected to one part of heat exchange units of the outdoor heat exchanger, and the second refrigerant branch flow path is connected to the other part of heat exchange units of the outdoor heat exchanger;
the first control valve is arranged on the first refrigerant branch pipeline;
the second control valve is arranged on the second refrigerant branch pipeline;
a second refrigerant flow path;
a third valve port and a fourth valve port of the first four-way valve are respectively connected to the second refrigerant flow path;
one end of the second refrigerant flow path is branched to form a third refrigerant branch flow path and a fourth refrigerant branch flow path, the third refrigerant branch flow path is connected to the part of the heat exchange units of the outdoor heat exchanger, and the fourth refrigerant branch flow path is connected to the rest of the heat exchange units of the outdoor heat exchanger;
the other end of the second refrigerant flow path is connected with a refrigerant inlet of the compressor;
the third control valve is arranged on the third refrigerant branch pipeline;
the fourth control valve is arranged on the fourth refrigerant branch pipeline;
a fifth control valve provided in a flow path where a third valve port of the first four-way valve is connected to the second refrigerant flow path;
a second four-way valve, a first valve port of the second four-way valve is connected with a refrigerant outlet of the compressor,
a third valve port of the second four-way valve is connected with the indoor heat exchanger;
a second valve port and a fourth valve port of the second four-way valve are respectively connected to the second refrigerant flow path;
and a sixth control valve provided in a flow path in which a second valve port of the second four-way valve is connected to the second refrigerant flow path.
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| CN201910869112.3A CN110608511A (en) | 2019-09-16 | 2019-09-16 | Air conditioner heating control method, controller and air conditioner |
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| CN201910869112.3A CN110608511A (en) | 2019-09-16 | 2019-09-16 | Air conditioner heating control method, controller and air conditioner |
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