CN110848906A - Air conditioner dehumidification control method and device, air conditioner and storage medium - Google Patents
Air conditioner dehumidification control method and device, air conditioner and storage medium Download PDFInfo
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- CN110848906A CN110848906A CN201911182838.6A CN201911182838A CN110848906A CN 110848906 A CN110848906 A CN 110848906A CN 201911182838 A CN201911182838 A CN 201911182838A CN 110848906 A CN110848906 A CN 110848906A
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
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Abstract
The invention provides a dehumidification control method and device for an air conditioner, the air conditioner and a storage medium, and relates to the technical field of air conditioners, wherein the method comprises the steps of obtaining a current operation mode, a set temperature and an ambient temperature; judging whether a condition for entering a second type dehumidification mode is met or not according to the current operation mode, the set temperature and the environment temperature; and if the condition of entering the second type dehumidification mode is met, controlling and adjusting the opening degree of the outdoor throttling mechanism and the opening degree of the indoor throttling mechanism to perform dehumidification. The invention provides a method for adjusting the opening degrees of an outdoor throttling mechanism and an indoor throttling mechanism by comparing a set temperature with a real-time detected environment temperature, so as to realize temperature rise dehumidification, constant temperature dehumidification and temperature reduction dehumidification, avoid the influence of temperature fluctuation on comfortableness in the dehumidification process and meet different temperature setting requirements of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a dehumidification control method and device for an air conditioner, the air conditioner and a storage medium.
Background
Modern houses are not always sunned and ventilated, so that indoor humidity is easily caused, and when the air contains excessive moisture, certain influence is caused on human bodies. Meanwhile, for the air conditioner, mold breeding in the air conditioner is easily caused when the environment humidity is high. Therefore, the dehumidification technology is widely used in air conditioning systems in consideration of human health and safe operation of air conditioners.
In the existing air conditioner dehumidification control technology, a dehumidification operation mode is mainly adopted, and the main principle is as follows: the heat exchanger of the indoor unit is used as an evaporator to absorb heat, when room air is sucked by a fan of the indoor unit and passes through the evaporator, moisture in the air is condensed into water, and then the water is gathered into the drain pipe and is led to the outside to be discharged, so that the aim of reducing the indoor relative humidity is fulfilled. However, in the dehumidification mode, the heat exchanger of the indoor unit absorbs heat as an evaporator to absorb moisture in the air, and changes of the indoor temperature can be caused, so that the air conditioner cannot reach the set value of the user to the indoor temperature in the dehumidification operation, the comfort level of the air conditioner is affected, and the user experience is affected.
Disclosure of Invention
The invention solves the problem that the dehumidification mode in the prior art can cause the indoor temperature change, so as to meet the temperature setting requirement of a user.
In order to solve the above problems, the present invention provides a dehumidification control method for an air conditioner, in which an indoor unit of the air conditioner includes an indoor first heat exchanger and an indoor second heat exchanger, an outdoor throttling mechanism is connected between the outdoor heat exchanger and the indoor first heat exchanger, and an indoor throttling mechanism is connected between the indoor first heat exchanger and the indoor second heat exchanger, the dehumidification control method including:
acquiring a current operation mode, a set temperature and an environment temperature;
judging whether a condition for entering a second type dehumidification mode is met or not according to the current operation mode, the set temperature and the environment temperature;
and if the condition of entering the second type dehumidification mode is met, controlling and adjusting the opening degree of the outdoor throttling mechanism and the opening degree of the indoor throttling mechanism to perform dehumidification.
According to the invention, the throttling degrees of the indoor throttling mechanism and the outdoor throttling mechanism are adjusted, so that the following conditions exist in the indoor first heat exchanger and the indoor second heat exchanger: firstly, the evaporator is used at the same time; secondly, the condenser is used at the same time; third, one is used as an evaporator and the other as a condenser. From this, can be according to the temperature demand of difference, real-time detection ambient temperature carries out corresponding dehumidification control, when realizing the dehumidification function, guarantees that the room temperature does not produce undulantly to avoid receiving the influence that the dehumidification brought, promote the air conditioner and use the travelling comfort.
Further, the second type dehumidification mode includes: a cooling dehumidification mode, a constant temperature dehumidification mode and a heating dehumidification mode.
According to the invention, the environment temperature reduction is realized while dehumidification is realized by setting the temperature reduction dehumidification mode, the environment temperature maintenance is realized while dehumidification is realized by setting the constant temperature dehumidification mode, and the environment temperature increase is realized while dehumidification is realized by setting the temperature increase dehumidification mode, so that different temperature setting requirements of users are met, and the influence of dehumidification operation on the indoor environment temperature is eliminated.
Further, the determining whether the condition for entering the second type dehumidification mode is satisfied according to the current operation mode, the set temperature and the ambient temperature specifically includes:
when the current operation mode is a first-type dehumidification mode, if the set temperature is lower than the ambient temperature, entering the cooling dehumidification mode in a second-type dehumidification mode; if the set temperature is equal to the ambient temperature, entering the constant-temperature dehumidification mode in the second type of dehumidification mode; and if the set temperature is higher than the ambient temperature, entering the temperature-raising dehumidification mode in the second type of dehumidification mode.
According to the invention, the set temperature and the environment temperature are compared, so that the temperature-reducing dehumidification mode, the constant-temperature dehumidification mode and the temperature-raising dehumidification mode are selected to enter according to the requirements and the actual temperature conditions of users, the indoor temperature is ensured to be stable, the temperature fluctuation caused by dehumidification is avoided, and the use comfort of the users is improved.
Further, the controlling and adjusting the opening degree of the outdoor throttling mechanism and the opening degree of the indoor throttling mechanism to perform dehumidification specifically includes:
when the second type dehumidification mode is the cooling dehumidification mode, controlling the outdoor throttling mechanism to reach a first preset opening degree and controlling the indoor throttling mechanism to be fully opened;
when the second type of dehumidification mode is the constant-temperature dehumidification mode, controlling the outdoor throttling mechanism to be fully opened and controlling the indoor throttling mechanism to reach a second preset opening degree;
and when the second type of dehumidification mode is the heating dehumidification mode, controlling the outdoor throttling mechanism to be fully opened and controlling the indoor throttling mechanism to reach a third preset opening degree.
According to the invention, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are adjusted according to the mode requirements of a heating dehumidification mode, a constant temperature dehumidification mode or a cooling dehumidification mode, and the functions of heating, maintaining the temperature and cooling are realized in the dehumidification process through the matched use of the outdoor throttling mechanism and the indoor throttling mechanism, so that the temperature is accurately controlled in the dehumidification process, the temperature is monitored and adjusted in real time, the current environment temperature is ensured to meet the requirements of users, and the user experience is improved.
Further, still include: when a shutdown signal is acquired, judging whether the current operation mode is a refrigeration mode or a dehumidification mode;
if the current operation mode is the refrigeration mode or the first-type dehumidification mode, judging whether preset conditions for drying the indoor unit after shutdown are set;
and if the preset conditions are set, entering an evaporation mode, and controlling and adjusting the opening degree of the outdoor throttling mechanism and the opening degree of the indoor throttling mechanism to perform drying shutdown.
According to the method and the device, after the shutdown signal is received, whether the evaporation mode needs to be entered is judged according to the preset condition whether the user sets drying or not, unnecessary evaporation operation is prevented, the drying is set after shutdown, further mildew breeding of the indoor unit is prevented, and the phenomenon that the indoor unit grows mildew and blows off peculiar smell to influence the use experience of the user is avoided.
Further, the controlling and adjusting the opening degree of the outdoor throttling mechanism and the opening degree of the indoor throttling mechanism to perform drying shutdown specifically includes:
controlling the outdoor throttling mechanism to be fully opened and controlling the indoor throttling mechanism to reach a fourth preset opening degree;
and counting the time length of entering the evaporation mode, and controlling the shutdown if the time length reaches a first preset time length.
According to the invention, effective evaporation operation is carried out by adjusting the opening degree of the outdoor throttling mechanism and the opening degree of the indoor throttling mechanism, and a certain drying time is set to avoid overlong evaporation time, so that effective drying is carried out within a certain time, effective drying is ensured within the time, and the breeding of indoor unit mould is prevented.
Further, still include: when the current operation mode is a refrigeration mode, controlling the outdoor throttling mechanism to reach a fifth preset opening degree and controlling the indoor throttling mechanism to be fully opened;
when the current operation mode is a heating mode, controlling the outdoor throttling mechanism to reach a sixth preset opening degree and controlling the indoor throttling mechanism to reach full opening;
and when the current operation mode is a constant-temperature drying mode, controlling the outdoor throttling mechanism to be fully opened and controlling the indoor throttling mechanism to reach a seventh preset opening degree.
In the refrigeration mode, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are adjusted, so that the indoor first heat exchanger and the indoor second heat exchanger are used as evaporators, and the conventional refrigeration effect is realized. And under the heating mode, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are adjusted, so that the indoor first heat exchanger and the indoor second heat exchanger are both used as condensers, and the conventional heating effect is realized. Meanwhile, in order to prevent the indoor unit from breeding mildew, a constant-temperature drying mode is set, the evaporator is dried, the residual moisture in the indoor unit can be reduced, mildew or bacteria generation of the indoor unit is reduced, and the normal operation of the indoor unit is guaranteed.
According to the invention, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are controlled by comparing the ambient temperature with the set temperature and combining the mode information, so that the functions of temperature rise dehumidification, constant temperature dehumidification and temperature reduction dehumidification are realized, and the interference on the room temperature caused by dehumidification is eliminated. Meanwhile, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are controlled, and the conventional refrigerating and heating functions are realized. In addition, a constant-temperature drying mode is additionally arranged to realize the mildew-proof function, and whether the evaporation mode needs to be started or not is judged after the machine is turned off, so that the automatic mildew-proof function is realized. The comfort of the air conditioner can be effectively improved.
Another objective of the present invention is to provide a dehumidification control device for an air conditioner, which can achieve temperature rise dehumidification, constant temperature dehumidification, and temperature reduction dehumidification according to a set temperature and an ambient temperature.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides an air conditioner dehumidification controlling means, the indoor set of air conditioner includes indoor first heat exchanger and indoor second heat exchanger, outdoor throttle mechanism connect in outdoor heat exchanger with between the indoor first heat exchanger, indoor throttle mechanism connect in indoor first heat exchanger with between the indoor second heat exchanger, dehumidification controlling means includes:
the acquisition unit is used for acquiring a current operation mode, a set temperature and an environment temperature;
the processing unit is used for judging whether the conditions for entering the second type dehumidification mode are met or not according to the current operation mode, the set temperature and the environment temperature;
and the control unit is used for controlling and adjusting the opening degree of the outdoor throttling mechanism and the opening degree of the indoor throttling mechanism to perform dehumidification when the condition of entering the second type dehumidification mode is met.
Compared with the prior art, the dehumidification control device of the air conditioner and the dehumidification control method have the same beneficial effects, and are not repeated herein.
The third objective of the present invention is to provide an air conditioner, which can achieve temperature rise dehumidification, constant temperature dehumidification, and temperature reduction dehumidification according to the set temperature and the ambient temperature.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an air conditioner comprises a computer readable storage medium and a processor, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and executed by the processor, the dehumidification control method of the air conditioner is realized.
Compared with the prior art, the air conditioner and the dehumidification control method have the same beneficial effects, and are not repeated herein.
A fourth object of the present invention is to provide a computer-readable storage medium, which can implement temperature-raising dehumidification, constant-temperature dehumidification, and temperature-lowering dehumidification according to a set temperature and an ambient temperature.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a computer-readable storage medium storing a computer program which, when read and executed by a processor, implements any of the dehumidification control methods described above.
The beneficial effects of the computer readable storage medium and the dehumidification control method compared with the prior art are the same, and are not described herein again.
Drawings
FIG. 1 is a flow chart illustrating a dehumidification control method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a dehumidification control system of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating a process for determining a second type of dehumidification mode according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating a method for controlling dehumidification according to a second type of dehumidification mode according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating specific steps after receiving a shutdown signal according to an embodiment of the present invention;
FIG. 6 is a flow chart illustrating the specific steps of a dry shutdown according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart of a cooling mode according to an embodiment of the present invention;
FIG. 8 is a schematic flow chart of a heating mode according to an embodiment of the present invention;
FIG. 9 is a schematic flow chart of a constant temperature drying mode according to an embodiment of the present invention;
FIG. 10 is a schematic flow diagram illustrating a first refrigerant according to an embodiment of the invention;
FIG. 11 is a schematic flow diagram illustrating a second refrigerant according to an embodiment of the invention;
fig. 12 is a schematic structural diagram of an air conditioner dehumidification control apparatus 1200 according to an embodiment of the present invention.
Description of reference numerals:
1-indoor unit, 11-indoor first heat exchanger, 12-indoor second heat exchanger, 13-indoor throttling mechanism, 14-indoor fan, 15-indoor temperature and humidity sensor, 2-outdoor unit, 21-compressor, 22-four-way valve, 23-outdoor throttling mechanism, 24-outdoor heat exchanger, 25-outdoor fan and 3-control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Dehumidification is one of the most important functions that an air conditioner has, and the air conditioner has a dehumidification function in two cases:
1) a cooling mode. This is the mode that any air conditioner has, and is the most basic mode of air conditioner, and the process of air conditioner refrigeration is necessarily accompanied by dehumidification. The temperature of the humid air can be greatly reduced after passing through the evaporator of the air conditioner, the air humidity is in an oversaturated state, redundant water vapor is separated out in the form of condensed water and is condensed on fins of the evaporator, namely condensation, and when the refrigeration mode reaches a certain balance state, the air humidity is reduced to a certain level.
2) And (4) a dehumidification mode. The basic principle is that the heat exchanger of the indoor unit acts as an evaporator to absorb heat, and when room air is sucked by the fan of the indoor unit and passes through the evaporator, moisture in the air is condensed into water, whereby the humidity of the indoor environment is reduced.
When the air conditioning system is in a dehumidification mode, a low-temperature and low-pressure refrigerant is sucked by the compressor, compressed into high-pressure and high-temperature gas and discharged into the outdoor heat exchanger; the outdoor heat exchanger and outdoor air exchange heat to become medium-temperature and high-pressure refrigerant under the action of an outdoor fan; and the refrigerant enters an evaporator after being subjected to pressure reduction and temperature reduction, enters the indoor unit under the action of a fan of the indoor unit for heat exchange, absorbs heat and then becomes high-temperature and high-pressure refrigerant liquid, so that the circulation is completed. The indoor unit exchanges heat with indoor air under the action of the fan of the indoor unit, at the moment, the indoor unit realizes the function of an evaporator, and moisture in the air absorbs heat, is condensed into water and then is discharged outdoors, so that the indoor humidity is reduced, and the dehumidification function is completed.
Therefore, the dehumidification mode of a general air conditioner may cause the indoor temperature to be reduced, so that the air conditioner cannot reach the set value of the indoor temperature by the user during the dehumidification operation, and the user experience is affected. Aiming at the problem that the indoor temperature changes due to the dehumidification mode in the prior art, the second type of dehumidification modes of temperature rise dehumidification, constant temperature dehumidification and temperature reduction dehumidification are set, the environmental temperature is monitored in real time in the dehumidification process, corresponding mode adjustment is carried out, and different temperature setting requirements of users are met.
Fig. 1 is a schematic diagram illustrating a dehumidification control method of an air conditioner according to an embodiment of the present invention, including steps S1 to S3.
In step S1, the current operation mode, the set temperature, and the ambient temperature are acquired. When the air conditioner is operated in the heating, cooling, dehumidifying and constant temperature drying modes, the refrigerant flows in different directions, and thus the functions of the outdoor heat exchanger 24, the indoor first heat exchanger 11 and the indoor second heat exchanger 12 are different, and therefore the operation mode of the air conditioner needs to be determined first. The invention acquires the set temperature Ts and the ambient temperature Tr to monitor the temperature in real time, thereby being convenient for judging whether the air conditioner enters temperature rise dehumidification, constant temperature dehumidification or temperature reduction dehumidification in real time, adjusting in time, eliminating the interference to the indoor temperature caused by dehumidification and improving the comfort level of users.
In step S2, it is determined whether a condition for entering the second type dehumidification mode is satisfied according to the current operation mode, the set temperature, and the ambient temperature. The temperature setting requirement of a user during dehumidification can be further met by setting the second type of dehumidification mode. In an embodiment of the present invention, the second type dehumidification mode includes: a cooling dehumidification mode, a constant temperature dehumidification mode and a heating dehumidification mode.
In step S3, if the condition for entering the second type dehumidification mode is satisfied, the opening degree of the outdoor throttle mechanism 23 and the opening degree of the indoor throttle mechanism 13 are controlled and adjusted to perform dehumidification. By adjusting the throttle degrees of the indoor throttle mechanism 23 and the outdoor throttle mechanism 13, the following conditions exist in the indoor first heat exchanger 11 and the indoor second heat exchanger 12: firstly, the evaporator is used at the same time; secondly, the condenser is used at the same time; third, one is used as an evaporator and the other as a condenser. Therefore, different dehumidification modes can be set according to different temperature requirements, the functions of the indoor first heat exchanger 11 and the indoor second heat exchanger 12 are switched, and the fluctuation of the room temperature of the vehicle caused by dehumidification is avoided.
Specifically, referring to fig. 2, fig. 2 is a schematic structural diagram of a dehumidification control system of an air conditioner according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of a dehumidification control system according to the present invention, which includes an indoor unit 1, an outdoor unit 2, and a control module 3; the indoor unit 1 comprises an indoor first heat exchanger 11, an indoor second heat exchanger 12 and an indoor throttling mechanism 13; the outdoor unit 2 comprises an outdoor throttling mechanism 23 and an outdoor heat exchanger 24; the indoor first heat exchanger 11 and the indoor second heat exchanger 12 are connected in series by the indoor throttle mechanism 13, and the indoor first heat exchanger 11 and the outdoor heat exchanger 24 are connected in series by the outdoor throttle mechanism.
In the embodiment of the invention, the heat exchangers of the indoor unit 1 are divided into an indoor first heat exchanger 11 and an indoor second heat exchanger 12, an indoor throttling mechanism 13 is arranged between the indoor first heat exchanger 11 and the indoor second heat exchanger 12, and meanwhile, an outdoor throttling mechanism 23 is arranged between the indoor first heat exchanger 11 and the outdoor heat exchanger 24, so that the indoor first heat exchanger 11 and the indoor second heat exchanger 12 can be switched between an evaporator and a condenser by controlling the opening degrees of the indoor throttling mechanism 13 and the outdoor throttling mechanism 23 based on a simple series structure, and the indoor first heat exchanger 11 and the indoor second heat exchanger 12 are mutually matched to realize the functions of temperature rise and dehumidification, constant temperature dehumidification and temperature reduction dehumidification, and meet the requirements of users for setting different temperatures.
In another embodiment of the present invention, the indoor unit of the air conditioner related to the present invention may be divided into a plurality of parts, which are an indoor first heat exchanger, an indoor second heat exchanger … …, where N is an integer greater than 2, the indoor first heat exchanger and the indoor second heat exchanger … … are sequentially connected in series, an indoor throttling mechanism is disposed between two adjacent indoor heat exchangers, and by adjusting the opening degrees of the plurality of indoor throttling mechanisms, the indoor first heat exchanger and the indoor second heat exchanger … … are controlled to realize the combination of the cooperation of multiple evaporators and condensers, so as to effectively realize the functions of warming and dehumidifying, constant temperature dehumidifying, cooling and dehumidifying, refrigerating, heating, and constant temperature drying, and meet different requirements of users for setting.
In the embodiment of the present invention, the fins of the indoor first heat exchanger 11 are subjected to hydrophobic treatment, and during the refrigeration or dehumidification process, the generated water does not stay on the surfaces of the fins continuously, and the generated water is rapidly discharged out of the heat exchanger under the influence of gravity or air flow. The indoor second heat exchanger 12 is subjected to hydrophilic treatment, and during the refrigeration or dehumidification process, the generated water stays on the surfaces of the heat exchanger fins, and is slowly discharged out of the heat exchanger under the influence of gravity or air flow. The indoor first heat exchanger 11 and the indoor second heat exchanger 12 are respectively subjected to hydrophobic treatment and hydrophilic treatment, and when the indoor first heat exchanger and the indoor second heat exchanger are used as a condenser and an evaporator, the overall heat exchange efficiency is improved.
In the embodiment of the present invention, the indoor throttle 13 and the outdoor throttle 23 are preferably electronic expansion valves, and in other embodiments, the capillary tube and the electronic expansion valve may be connected in series, which is not specifically limited herein, as long as the functions of adjusting the opening degree and controlling the throttling and depressurizing are achieved.
In the embodiment of the present invention, the indoor unit 1 further includes an indoor fan 14 and an indoor temperature and humidity sensor 15, and the outdoor unit 2 further includes a compressor 21, a four-way valve 22, and an outdoor fan 25. The indoor fan 14 is used for exchanging the indoor first heat exchanger 11 and the outdoor heat exchanger 24 with indoor air, and the indoor temperature and humidity sensor 15 is used for detecting indoor ambient temperature and humidity. The compressor 21 converts a low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant, the four-way valve 22 changes the flow direction of the refrigerant, and the outdoor fan 25 exchanges heat between the outdoor unit 2 and outdoor air.
In another embodiment of the present invention, an indoor fan 14 can be provided for each part of heat exchangers of the indoor unit, so that the heat exchange state of each part of heat exchangers can be controlled more accurately, and more accurate temperature and humidity control can be realized.
FIG. 3 is a schematic flow chart illustrating a process for determining a second type of dehumidification mode according to an embodiment of the present invention, including: steps S21 to S25.
In step S21, the current operation mode is determined to be the first-type dehumidification mode.
In step S22, the magnitude relation between the set temperature Ts and the ambient temperature Tr is determined.
In step S23, if the set temperature Ts is lower than the ambient temperature Tr, the system enters the cool dehumidification mode of the second type of dehumidification mode. When the set temperature Ts is less than the ambient temperature Tr, it indicates that the ambient temperature still needs to be reduced to meet the user's requirement, and thus the cooling and dehumidifying mode is entered.
In step S24, if the set temperature Ts is equal to the ambient temperature Tr, the constant temperature dehumidification mode in the second type dehumidification mode is entered. When the set temperature Ts is equal to the ambient temperature Tr, it indicates that the ambient temperature needs to be maintained to meet the user's requirement, and thus the constant temperature dehumidification mode is entered.
In step S25, if the set temperature Ts is higher than the ambient temperature Tr, the temperature-increasing dehumidification mode in the second type of dehumidification mode is performed. When the set temperature Ts is greater than the ambient temperature Tr, it indicates that the ambient temperature needs to be increased to meet the user's requirement, and thus the temperature-increasing dehumidification mode is entered.
FIG. 4 is a flowchart illustrating a method for controlling dehumidification according to a second type of dehumidification mode according to an embodiment of the present invention, including steps S31-S34.
In step S31, a second type dehumidification mode is determined. And judging that the second type dehumidification mode is one of a cooling dehumidification mode, a constant temperature dehumidification mode or a heating dehumidification mode according to the conditions.
In step S32, when the second type dehumidification mode is the temperature reduction dehumidification mode, the control outdoor throttle 23 is opened to the first preset opening degree and the control indoor throttle 13 is fully opened. In this case, the outdoor heat exchanger 24 serves as a condenser, the indoor first heat exchanger 11 serves as an evaporator, and the indoor second heat exchanger 12 serves as an evaporator, thereby achieving the cooling and dehumidifying functions.
Referring to fig. 10, the refrigerant flow direction during cooling and dehumidifying operation of the embodiment of the present invention is as shown in fig. 10, when the air conditioner is in a heating operation state, the refrigerant flow direction in the four-way valve 22 is as shown by an arrow in fig. 10, and the air conditioning system cycle is as follows: the compressor 21 is started to discharge high-temperature and high-pressure refrigerant, the refrigerant is led to the outdoor heat exchanger 24 through the four-way valve 22, the refrigerant is converted into medium-temperature and medium-pressure refrigerant through the condensation function of the outdoor heat exchanger 24, the refrigerant is converted into low-temperature and low-pressure refrigerant through the throttling function of the outdoor throttling mechanism 23 and enters the indoor unit 1, the refrigerant is converted into vapor-liquid two-phase refrigerant through the evaporation function of the indoor first heat exchanger 11, the vapor-liquid two-phase refrigerant is converted into low-temperature and low-pressure refrigerant through the evaporation function of the indoor second heat exchanger 12 due to the fact that the indoor throttling mechanism 13 has no throttling function, the refrigerant exchanges heat with indoor air, moisture in the air is condensed into water, and therefore the.
In step S33, when the second type dehumidification mode is the constant temperature dehumidification mode, the outdoor throttle 23 is controlled to be fully opened and the indoor throttle 13 is controlled to a second preset opening degree. In this case, the outdoor heat exchanger 24 serves as a condenser, the indoor first heat exchanger 11 serves as a condenser, and the indoor second heat exchanger 12 serves as an evaporator, thereby achieving a constant temperature dehumidification function.
In step S34, when the second type dehumidification mode is the temperature increase dehumidification mode, the outdoor throttle 23 is controlled to be fully opened and the indoor throttle 13 is controlled to a third preset opening degree. In this case, the outdoor heat exchanger 24 serves as a condenser, the indoor first heat exchanger 11 serves as a condenser, and the indoor second heat exchanger 12 serves as an evaporator, thereby implementing a temperature-raising and dehumidifying function.
The refrigerant flow direction during the constant temperature dehumidification or temperature rise dehumidification operation according to the embodiment of the present invention is shown in fig. 10. When the air conditioner is in a heating operation state, the flow direction of the refrigerant in the four-way valve 22 is as shown by the arrow in fig. 10, and the circulation of the air conditioning system is as follows: the compressor 21 is started, high-temperature and high-pressure refrigerant is discharged, the refrigerant is led to the outdoor heat exchanger through the four-way valve 22, the refrigerant is converted into medium-temperature and medium-pressure refrigerant through the condensation function of the outdoor heat exchanger 24, at the moment, the outdoor throttling mechanism 23 has no throttling function, so the medium-temperature and medium-pressure refrigerant directly enters the indoor unit 1 without throttling, the refrigerant is converted into low-temperature and low-pressure liquid refrigerant through the condensation function of the indoor first heat exchanger 11, the low-temperature and low-pressure liquid refrigerant is converted into low-temperature and low-pressure vapor refrigerant through the evaporation function of the indoor second heat exchanger 12 due to the throttling function of the indoor throttling mechanism 13, and the low-temperature.
In the embodiment of the invention, the first preset opening degree is preferably 250, so that the cooling and dehumidifying functions are effectively realized; the second preset opening degree is preferably 200, so that constant-temperature dehumidification is effectively realized; the third preset opening degree is preferably 150, thereby effectively implementing the warming dehumidification function.
Fig. 5 is a flowchart illustrating specific steps after receiving a shutdown signal according to an embodiment of the present invention, including steps S41-S43.
In step S41, a shutdown signal is obtained to determine whether the current mode is the cooling mode or the first type dehumidification mode. When the air conditioner operates in the heating mode or the constant-temperature drying mode, drying is not needed, but moisture remains in the indoor unit and mildew is easy to breed when the air conditioner operates in the cooling mode or the first-class dehumidification mode, so that the mode needs to be judged to avoid unnecessary drying operation in the heating mode.
In step S42, if the mode is the cooling mode or the dehumidification mode, it is determined whether or not a preset condition for drying the indoor unit 1 after shutdown is set. When the user presets that the drying is needed after shutdown, the drying operation is carried out, and the use requirements of the user are met.
In step S43, if the preset condition is set, the operation enters the evaporation mode, and the opening degree of the outdoor throttle mechanism 23 and the opening degree of the indoor throttle mechanism 13 are controlled and adjusted to perform drying shutdown. When the user presets that drying is needed after shutdown, the opening degrees of the outdoor throttling mechanism 23 and the indoor throttling mechanism 13 are controlled, so that the mildew-proof function required by the user is realized.
Fig. 6 is a flowchart illustrating specific steps of the drying shutdown according to the embodiment of the present invention, which includes steps S431 to S433.
In step S431, it is determined to enter the evaporation mode.
In step S432, the outdoor throttle mechanism is controlled to be fully opened 23, and the indoor throttle mechanism 13 is controlled to reach a fourth preset opening degree. Thus, in the evaporation mode, the outdoor heat exchanger 24 functions as an evaporator, the indoor first heat exchanger 11 functions as an evaporator, and the indoor second heat exchanger 12 functions as a condenser, thereby achieving an evaporation function.
In the embodiment of the present invention, the fourth preset opening degree is preferably 200, thereby effectively implementing the evaporation function.
In step S433, the time length for entering the evaporation mode is counted, and if the time length reaches a first preset time length, the power-off is controlled. By ensuring a drying time period, it is hereby ensured that effective drying can be carried out within this time period, while an excessively long drying time is avoided.
In the embodiment of the present invention, the first preset time period is preferably 10 minutes. When the evaporation time period reaches 10 minutes, it is indicated that sufficient drying has been performed, thereby ensuring that the air conditioner performs drying for an effective time period.
FIG. 7 is a schematic flow chart illustrating a cooling mode according to an embodiment of the present invention, including steps S51-S52.
In step S51, the current mode is determined to be the cooling mode.
In step S52, the outdoor throttle 23 is controlled to the fifth preset opening degree and the indoor throttle 13 is controlled to be fully opened. In this case, the outdoor heat exchanger 24 is used as a condenser, the indoor first heat exchanger 11 is used as an evaporator, and the indoor second heat exchanger 12 is used as an evaporator, thereby performing a normal cooling function.
Referring to fig. 10, the refrigerant flow direction during the cooling operation of the embodiment of the present invention is as follows: the compressor 21 is started to discharge high-temperature and high-pressure refrigerant, the refrigerant is led to the outdoor heat exchanger 24 through the four-way valve 22, the refrigerant is converted into medium-temperature and medium-pressure refrigerant through the condensation function of the outdoor heat exchanger 24, the refrigerant is converted into low-temperature and low-pressure refrigerant through the throttling function of the outdoor throttling mechanism 23 and enters the indoor unit 1, the refrigerant is converted into vapor-liquid two-phase refrigerant through the evaporation function of the indoor first heat exchanger 11, the vapor-liquid two-phase refrigerant is converted into low-temperature and low-pressure refrigerant through the evaporation function of the indoor second heat exchanger 12 due to the fact that the indoor throttling mechanism 13 has no throttling function, the refrigerant exchanges heat with indoor air, and moisture in.
In the embodiment of the present invention, the fifth preset opening degree is preferably 150, thereby effectively implementing the cooling function.
FIG. 8 is a flow chart illustrating a heating mode according to an embodiment of the present invention, including steps S61-S62.
In step S61, the current mode is determined to be the heating mode.
In step S62, the outdoor throttle mechanism 23 is controlled to the sixth preset opening degree and the indoor throttle mechanism 13 is controlled to the full opening degree. In this case, the outdoor heat exchanger 24 is used as an evaporator, the indoor first heat exchanger 11 is used as a condenser, and the indoor second heat exchanger 12 is used as a condenser, thereby performing a conventional heating function.
The refrigerant flow direction during heating operation according to the embodiment of the present invention is shown in fig. 11. When the air conditioner is in a heating operation state, the flow direction of the refrigerant in the four-way valve 22 is as shown by the arrow in fig. 11, and the air conditioning system cycle is as follows: the compressor 21 is started to discharge high-temperature and high-pressure refrigerant, the refrigerant is led to the indoor second heat exchanger 12 through the four-way valve 22, the refrigerant is converted into a relatively high-temperature refrigerant state through the condensation effect of the indoor second heat exchanger 12, the indoor throttling mechanism 13 has no throttling effect, and therefore the refrigerant is directly led to the indoor first heat exchanger 11, the refrigerant is converted into a medium-temperature and medium-pressure liquid refrigerant through the second condensation effect of the indoor first heat exchanger 11, the refrigerant is converted into a low-temperature and low-pressure liquid refrigerant through the throttling effect of the outdoor throttling mechanism 23, the refrigerant is converted into a low-temperature and low-pressure vapor refrigerant through the evaporation effect of the outdoor heat exchanger 24, and the refrigerant returns to the compressor 21 through.
In the embodiment of the present invention, the sixth setting opening degree is preferably 250, thereby effectively achieving the heating function.
FIG. 9 is a schematic flow chart of the constant temperature drying mode according to the embodiment of the present invention, which includes steps S71-S72.
In step S71, the current mode is determined to be the constant temperature drying mode.
In step S72, the outdoor throttle mechanism 23 is controlled to the seventh preset opening degree and the indoor throttle mechanism 13 is controlled to the full opening degree. In this case, the outdoor heat exchanger 24 is used as an evaporator, the indoor first heat exchanger 11 is used as an evaporator, and the indoor second heat exchanger 12 is used as a condenser, thereby achieving a constant temperature drying function.
The refrigerant flow direction during the constant temperature drying operation according to the embodiment of the present invention is shown in fig. 11. When the air conditioner is in a heating operation state, the flow direction of the refrigerant in the four-way valve 22 is as shown by the arrow in fig. 11, and the air conditioning system cycle is as follows: the compressor 21 is started to discharge high-temperature and high-pressure refrigerant, the refrigerant is led to the indoor second heat exchanger 12 through the four-way valve 22, the refrigerant is converted into a relatively low-temperature refrigerant state through the condensation effect of the indoor second heat exchanger 12, the refrigerant is converted into a medium-temperature and medium-pressure liquid refrigerant through the throttling effect of the indoor throttling mechanism 13 and then led to the indoor first heat exchanger 11, the refrigerant is converted into a low-temperature and low-pressure vapor refrigerant through the evaporation effect of the indoor first heat exchanger 11, and the refrigerant is directly converted into the low-temperature and low-pressure vapor refrigerant through the evaporation effect of the outdoor heat exchanger 24 and then is re-returned to.
In the embodiment of the present invention, the seventh preset opening is preferably 200, so as to effectively implement the constant temperature drying function.
Two specific numerical examples are given below in order to better explain the present invention.
When the acquisition mode is a dehumidification mode, the acquired environment temperature Tr is 26 ℃, the relative humidity is 75%, the user set temperature Ts is 24 ℃, the set relative humidity is 50%, the air conditioner is started to operate according to the set parameters of the user, the set relative humidity is 75% and is higher than the set value of the user when the indoor temperature and humidity sensor detects that the environment temperature Tr is 26 ℃, and the air conditioner judges that the environment temperature Tr is higher than the set temperature Ts and enters the cooling and dehumidification mode to operate. After entering the operation of the temperature reduction dehumidification mode for a period of time, the ambient temperature Tr is detected to be 26 ℃, the relative humidity is detected to be 60%, at the moment, the ambient temperature Tr is equal to the fixed temperature Ts, the relative humidity is still higher than the set relative humidity, and the air conditioner is switched to enter the operation of the constant temperature dehumidification mode.
When the acquisition mode is the dehumidification mode, the acquisition environment temperature Tr is 21 ℃, the relative humidity is 90%, the user set temperature Ts is 24 ℃, the set relative humidity is 50%, the air conditioner is started to operate according to the set parameters of the user, the environment temperature Tr is lower than the set temperature Ts, the relative humidity is 90% higher than the set relative humidity, and the air conditioner operates according to the heating dehumidification mode. After the air conditioner is operated for a certain period of time, the ambient temperature Tr rises and the relative humidity falls. After running for another period of time, the ambient temperature Tr was measured to be 24 ℃, and the relative humidity was reduced to 60%. At this time, the ambient temperature Tr is equal to the set temperature Ts, the humidity is still higher than the set value of the user, and the air conditioner is switched to the constant temperature dehumidification mode to operate.
According to the dehumidification control method of the air conditioner, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are controlled by comparing the real-time environment temperature with the set temperature, so that the functions of temperature rise dehumidification, constant temperature dehumidification and temperature reduction dehumidification are realized in real time, and the interference to the room temperature caused by dehumidification is eliminated. Meanwhile, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are controlled, and the conventional refrigerating and heating functions are realized. In addition, a constant-temperature drying mode is additionally arranged to realize the mildew-proof function, and whether the constant-temperature drying mode needs to be started or not is judged after the shutdown, so that the automatic mildew-proof function is realized.
Fig. 12 is a schematic structural diagram of an air conditioner dehumidification control apparatus 1200 according to an embodiment of the present invention, which is described in conjunction with fig. 2. The indoor unit (1) of the air conditioner comprises an indoor first heat exchanger (11) and an indoor second heat exchanger (12), the outdoor throttling mechanism (23) is connected between an outdoor heat exchanger (24) and the indoor first heat exchanger (11), the indoor throttling mechanism (13) is connected between the indoor first heat exchanger (11) and the indoor second heat exchanger (12), and the air conditioner dehumidification control device 1200 comprises an acquisition module 1210, a processing module 1220 and a control module 1230, wherein:
an obtaining unit 1210 configured to obtain a current operation mode, a set temperature, and an ambient temperature;
the processing unit 1220 is configured to select to enter the second type dehumidification mode according to the current operation mode, the set temperature and the ambient temperature;
and a control unit 1230 for controlling the opening degree of the outdoor throttle 23 and the opening degree of the indoor throttle 13 to perform dehumidification according to the second type dehumidification mode when the condition for entering the second type dehumidification mode is satisfied.
The dehumidification control device of the air conditioner controls the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism by comparing the real-time environmental temperature with the set temperature, realizes the functions of temperature rise dehumidification, constant temperature dehumidification and temperature reduction dehumidification in real time, and eliminates the interference on the room temperature caused by dehumidification. Meanwhile, the opening degrees of the outdoor throttling mechanism and the indoor throttling mechanism are controlled, and the conventional refrigerating and heating functions are realized. In addition, a constant-temperature drying mode is additionally arranged to realize the mildew-proof function, and whether the constant-temperature drying mode needs to be started or not is judged after the shutdown, so that the automatic mildew-proof function is realized.
The embodiment of the invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and when the computer program is read and run by the processor, the dehumidification control method is realized, the set temperature and the ambient temperature are compared in real time, so that different dehumidification modes are entered, and the requirements of users are met.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is read and executed by a processor, the computer program implements any one of the dehumidification control methods described above.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A dehumidification control method of an air conditioner, characterized in that an indoor unit (1) of the air conditioner comprises an indoor first heat exchanger (11) and an indoor second heat exchanger (12), an outdoor throttling mechanism (23) is connected between an outdoor heat exchanger (24) and the indoor first heat exchanger (11), and an indoor throttling mechanism (13) is connected between the indoor first heat exchanger (11) and the indoor second heat exchanger (12), the dehumidification control method comprising:
acquiring a current operation mode, a set temperature and an environment temperature;
judging whether a condition for entering a second type dehumidification mode is met or not according to the current operation mode, the set temperature and the environment temperature;
and if the condition for entering the second type dehumidification mode is met, controlling and adjusting the opening degree of the outdoor throttling mechanism (23) and the opening degree of the indoor throttling mechanism (13) to perform dehumidification.
2. The dehumidification control method of an air conditioner according to claim 1, wherein: the second type of dehumidification mode includes: a cooling dehumidification mode, a constant temperature dehumidification mode and a heating dehumidification mode.
3. The dehumidification control method of an air conditioner according to claim 2, wherein the determining whether the condition for entering the second type dehumidification mode is satisfied according to the current operation mode, the set temperature and the ambient temperature specifically comprises:
when the current operation mode is a first-type dehumidification mode, if the set temperature is lower than the ambient temperature, entering the cooling dehumidification mode in a second-type dehumidification mode; if the set temperature is equal to the ambient temperature, entering the constant-temperature dehumidification mode in the second type of dehumidification mode; and if the set temperature is higher than the ambient temperature, entering the temperature-raising dehumidification mode in the second type of dehumidification mode.
4. The dehumidification control method of an air conditioner according to claim 3, wherein the controlling to adjust the opening degree of the outdoor throttle mechanism (23) and the opening degree of the indoor throttle mechanism (13) to perform dehumidification specifically comprises:
when the second type of dehumidification mode is the cooling dehumidification mode, controlling the outdoor throttling mechanism (23) to reach a first preset opening degree and controlling the indoor throttling mechanism (13) to be fully opened;
when the second type of dehumidification mode is the constant-temperature dehumidification mode, controlling the outdoor throttling mechanism (23) to be fully opened and controlling the indoor throttling mechanism (13) to reach a second preset opening degree;
and when the second type of dehumidification mode is the heating dehumidification mode, controlling the outdoor throttling mechanism (23) to be fully opened and controlling the indoor throttling mechanism (13) to reach a third preset opening degree.
5. The dehumidification control method of an air conditioner according to claim 1, further comprising:
when a shutdown signal is acquired, judging whether the current operation mode is a refrigeration mode or a first-class dehumidification mode;
if the current operation mode is the refrigeration mode or the first-class dehumidification mode, judging whether a preset condition for drying the indoor unit (1) after shutdown is set;
and if the preset conditions are set, entering an evaporation mode, and controlling and adjusting the opening degree of the outdoor throttling mechanism (23) and the opening degree of the indoor throttling mechanism (13) to perform drying shutdown.
6. The dehumidification control method of an air conditioner according to claim 5, wherein the controlling and adjusting the opening degree of the outdoor throttle mechanism (23) and the opening degree of the indoor throttle mechanism (13) to perform the dry shutdown specifically comprises:
controlling the outdoor throttling mechanism to be fully opened (23) and controlling the indoor throttling mechanism (13) to reach a fourth preset opening degree;
and counting the time length of entering the evaporation mode, and controlling the shutdown if the time length reaches a first preset time length.
7. The dehumidification control method of an air conditioner according to claim 1, further comprising:
when the current operation mode is a refrigeration mode, controlling the outdoor throttling mechanism (23) to reach a fifth preset opening degree and controlling the indoor throttling mechanism (13) to be fully opened;
when the current operation mode is a heating mode, controlling the outdoor throttling mechanism (23) to reach a sixth preset opening degree and controlling the indoor throttling mechanism (13) to reach full opening;
and when the current operation mode is a constant-temperature drying mode, controlling the outdoor throttling mechanism (23) to be fully opened and controlling the indoor throttling mechanism (13) to reach a seventh preset opening degree.
8. The utility model provides an air conditioner dehumidification controlling means, its characterized in that, indoor set (1) of air conditioner includes indoor first heat exchanger (11) and indoor second heat exchanger (12), outdoor throttle mechanism (23) connect in outdoor heat exchanger (24) with between indoor first heat exchanger (11), indoor throttle mechanism (13) connect in indoor first heat exchanger (11) with between indoor second heat exchanger (12), dehumidification controlling means includes:
the acquisition unit is used for acquiring a current operation mode, a set temperature and an environment temperature;
the processing unit is used for judging whether the conditions for entering the second type dehumidification mode are met or not according to the current operation mode, the set temperature and the environment temperature;
and the control unit is used for controlling and adjusting the opening degree of the outdoor throttling mechanism (23) and the opening degree of the indoor throttling mechanism (13) to perform dehumidification when the condition of entering the second type dehumidification mode is met.
9. An air conditioner comprising a computer-readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the dehumidification control method of the air conditioner according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when read and executed by a processor, implements the air conditioner dehumidification control method according to any one of claims 1 to 7.
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Application publication date: 20200228 |
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