CN110513816B - Constant-temperature dehumidification control method, air conditioner and storage medium - Google Patents
Constant-temperature dehumidification control method, air conditioner and storage medium Download PDFInfo
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- CN110513816B CN110513816B CN201910786381.3A CN201910786381A CN110513816B CN 110513816 B CN110513816 B CN 110513816B CN 201910786381 A CN201910786381 A CN 201910786381A CN 110513816 B CN110513816 B CN 110513816B
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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
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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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- F24F11/873—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling refrigerant heaters
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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
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses a constant-temperature dehumidification control method, an air conditioner and a storage medium, wherein the constant-temperature dehumidification control method comprises the following steps: acquiring indoor temperature, indoor relative humidity and inner pipe plate temperature; controlling an air conditioner to enter different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the temperature of the inner coil and the real-time dew point temperature, wherein the real-time dew point temperature is obtained according to the indoor temperature and the indoor relative humidity; and controlling the running frequency and the electric heating state of a compressor according to the dehumidification mode entered by the air conditioner. According to the invention, the air conditioner is controlled to enter different dehumidification modes according to the indoor temperature, the indoor relative humidity and the temperature of the inner pipe plate, so that the running frequency and the electric heating state of the compressor are controlled according to the different dehumidification modes, and the constant-temperature dehumidification function is realized without increasing the cost.
Description
Technical Field
The invention relates to the field of air conditioner application, in particular to a constant-temperature dehumidification control method, an air conditioner and a storage medium.
Background
With the development of air conditioners, the requirements of users for the air conditioners are not only on the functions of refrigeration or heating; air conditioners are also required to have a dehumidification function to meet the user demands in heavily humid areas.
When the existing air conditioner dehumidifies, an air conditioning system generally operates based on refrigeration, and the indoor temperature can be synchronously reduced while dehumidifying, so that a human body feels cold and uncomfortable; in order to solve the problem, manufacturers control the temperature and dehumidify by controlling the starting and stopping intervals of the compressor and the frequency of the compressor or increasing a two-way valve in an indoor heat exchanger; the comfort and the dehumidification effect are still poor when the temperature is low by controlling the frequency of the compressor; however, by adding a throttling part of the two-way valve to the evaporator, the technology is complicated and the cost of the product is increased.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention aims to solve the technical problem that the invention provides a constant-temperature dehumidification control method, an air conditioner and a storage medium, wherein the air conditioner is controlled to enter different dehumidification modes according to the indoor temperature, the indoor relative humidity and the temperature of an inner pipe plate, so that the running frequency and the electric heating state of a compressor are controlled according to the different dehumidification modes, and the constant-temperature dehumidification function is realized without increasing the cost.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the invention provides a constant-temperature dehumidification control method, which comprises the following steps:
acquiring indoor temperature, indoor relative humidity and inner pipe plate temperature;
controlling an air conditioner to enter different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the temperature of the inner coil and the real-time dew point temperature, wherein the real-time dew point temperature is obtained according to the indoor temperature and the indoor relative humidity;
and controlling the running frequency and the electric heating state of a compressor according to the dehumidification mode entered by the air conditioner.
Further, the step of obtaining the indoor temperature, the indoor relative humidity and the temperature of the inner pipe coil comprises the following steps:
setting the indoor target temperature and the indoor target humidity.
Further, the step of controlling the air conditioner to enter different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the temperature of the inner coil and the real-time dew point temperature specifically comprises the following steps:
comparing the indoor temperature with the indoor target temperature, the indoor relative humidity with the indoor target humidity, and the temperature of the inner coil pipe with the real-time dew point temperature;
when the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is less than or equal to the indoor target humidity, controlling the air conditioner to enter a cooling and moisturizing mode;
when the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is greater than the indoor target humidity, controlling the air conditioner to enter a cooling and dehumidifying mode;
when the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is lower than or equal to the indoor target humidity, controlling the air conditioner to enter a heating and moisturizing mode;
and when the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is higher than the indoor target humidity, controlling the air conditioner to enter a heating and dehumidifying mode.
Further, the controlling the operating frequency of the compressor and the state of electric heating according to the dehumidification mode entered by the air conditioner specifically includes the following steps:
when the air conditioner enters a cooling and moisturizing mode, controlling the electric heating to be turned off, and controlling the running frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature;
when the air conditioner enters a cooling and dehumidifying mode, controlling the electric heating to be turned off, and controlling the running frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature;
when the air conditioner enters a heating and moisturizing mode, controlling the electric heating to be started, and closing the compressor;
and when the air conditioner enters a heating and dehumidifying mode, controlling the electric heating to be started, and controlling the running frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature.
Further, when the air conditioner enters a cooling and moisturizing mode, the electric heating is controlled to be turned off, and the operation frequency of the compressor is controlled according to the temperature of the inner coil and the real-time dew point temperature, and the method specifically comprises the following steps:
when the air conditioner enters a cooling and moisturizing mode, controlling the electric heating to be turned off, and comparing the temperature of the inner coil with the real-time dew point temperature;
when the temperature of the inner coil pipe is higher than the real-time dew point temperature, controlling the compressor to operate at a first preset frequency;
when the temperature of the inner coil is less than or equal to the real-time dew point temperature, controlling the compressor to operate at a second preset frequency;
the first preset frequency is the operating frequency of normal refrigeration of the compressor; the second preset frequency is smaller than the first preset frequency.
Further, when the air conditioner enters a cooling and dehumidifying mode, the electric heating is controlled to be turned off, and the operation frequency of the compressor is controlled according to the temperature of the inner coil and the real-time dew point temperature, and the method specifically comprises the following steps:
when the air conditioner enters a cooling and dehumidifying mode, controlling the electric heating to be turned off, and comparing the temperature of the inner coil with the real-time dew point temperature;
when the temperature of the inner coil pipe is higher than the real-time dew point temperature, controlling the compressor to operate at a third preset frequency;
when the temperature of the inner coil is less than or equal to the real-time dew point temperature, controlling the compressor to operate at the first preset frequency;
wherein the third preset frequency is greater than the first preset frequency.
Further, when the air conditioner enters a heating and dehumidifying mode, the electric heating is controlled to be turned on, and the operation frequency of the compressor is controlled according to the temperature of the inner coil pipe and the real-time dew point temperature, and the method specifically comprises the following steps:
when the air conditioner enters a heating and dehumidifying mode, the electric heating is controlled to be started, and the temperature of the inner coil is compared with the real-time dew point temperature;
when the temperature of the inner coil is less than or equal to the real-time dew point temperature, controlling the compressor to operate at the first preset frequency;
when the temperature of the inner coil pipe is higher than the real-time dew point temperature, controlling the compressor to operate at the fourth preset frequency;
wherein the fourth preset frequency is greater than the first preset frequency.
Further, when the air conditioner enters a heating and dehumidifying mode, the electric heating is controlled to be turned on, and the operation frequency of the compressor is controlled according to the temperature of the inner coil pipe and the real-time dew point temperature, and the method further comprises the following steps:
and when the air conditioner enters a heating and dehumidifying mode, controlling an indoor fan of the air conditioner to operate at a preset gear.
The invention provides an air conditioner, which comprises an indoor unit and an outdoor unit connected with the indoor unit;
the outdoor unit at least comprises a compressor;
the indoor unit at least comprises a control device, an electric heater, an indoor fan, an indoor temperature sensor, an indoor humidity sensor and an inner coil temperature sensor; the electric heater, the indoor fan, the indoor temperature sensor, the indoor humidity sensor and the inner coil temperature sensor are respectively electrically connected with the control device; the indoor temperature sensor is used for acquiring indoor temperature; the indoor humidity sensor is used for acquiring indoor relative humidity; the inner coil temperature sensor is used for acquiring the temperature of the inner coil;
the control device comprises a processor and a memory connected with the processor; the memory stores a constant temperature dehumidification control program, and the constant temperature dehumidification control program is used for realizing the constant temperature dehumidification control method when being executed by the processor.
The invention provides a storage medium, wherein the storage medium stores a constant temperature dehumidification control program, and the constant temperature dehumidification control program is used for realizing the constant temperature dehumidification control method when being executed by a processor.
The invention adopts the technical scheme and has the following effects:
according to the invention, the indoor temperature, the indoor relative humidity and the temperature of the inner pipe plate are obtained, and the air conditioner is controlled to enter different dehumidification modes according to the indoor temperature, the indoor relative humidity and the temperature of the inner pipe plate; in different dehumidification modes, the air conditioner can realize the constant-temperature dehumidification function by controlling the running frequency of the compressor and the electric heating state without increasing the cost.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the constant temperature dehumidification control method of the present invention.
FIG. 2 is a detailed schematic diagram of the thermostatic dehumidification control method of the present invention.
Fig. 3 is a functional schematic diagram of the air conditioner of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the prior art, two main dehumidification modes of the air conditioner are provided, one mode is to add a two-way valve in an indoor heat exchanger and control the on-off state of the two-way valve to perform temperature control dehumidification, the dehumidification mode is relatively complex in technology, the cost of the air conditioner is correspondingly increased, and the air conditioner is not beneficial to popularization and use; and the other method is to control the starting and stopping time of the air conditioner compressor and control the running frequency of the compressor so as to realize constant temperature dehumidification, and the comfort and the dehumidification effect are still poor when the temperature is low.
Example one
Referring to fig. 1 and 2, fig. 1 is a flow chart of a preferred embodiment of the constant temperature dehumidification control method of the present invention; FIG. 2 is a detailed schematic diagram of the thermostatic dehumidification control method of the present invention.
The constant temperature dehumidification control method provided by the preferred embodiment of the invention realizes constant temperature dehumidification without increasing the cost of the air conditioner.
As shown in fig. 1, the constant temperature dehumidification control method includes the following steps:
and step S100, acquiring indoor temperature, indoor relative humidity and inner pipe plate temperature.
In this embodiment, when the air conditioner is turned on, an indoor target temperature and an indoor target humidity need to be set in an indoor unit of the air conditioner, so that the air conditioner can compare an actual indoor temperature and an indoor relative humidity according to the indoor target temperature and the indoor target humidity; thereby selecting to enter different dehumidification modes according to the comparison result.
Namely, the step S100 is preceded by the following steps:
and step S001, setting the indoor target temperature and the indoor target humidity.
In this embodiment, be provided with indoor temperature sensor, indoor humidity transducer and interior coil pipe temperature sensor in the indoor set of air conditioner, wherein, interior coil pipe temperature sensor sets up on the interior coil pipe dish of air conditioner for acquire the temperature of the interior coil pipe dish of air conditioner.
Specifically, when the indoor temperature, the indoor relative humidity and the inner pipe coil temperature are obtained, the indoor temperature is obtained in real time through the indoor temperature sensor, the indoor relative humidity is obtained in real time through the indoor humidity sensor, and the inner pipe coil temperature is obtained in real time through the inner pipe coil temperature sensor; this embodiment is through acquireing indoor temperature indoor relative humidity with inner tube dish temperature for the air conditioner can be according to indoor temperature indoor relative humidity and the size of inner tube dish temperature selects to get into different dehumidification modes.
And S200, controlling the air conditioner to enter different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the temperature of the inner coil and the real-time dew point temperature.
In this embodiment, after the indoor temperature, the indoor relative humidity and the temperature of the inner coil are obtained, the air conditioner enters different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the temperature of the inner coil and the real-time dew point temperature; wherein, the real-time dew point temperature is calculated according to the indoor temperature and the indoor relative humidity, and the calculation mode is as follows: t isDew＝ARH+BTIndoor use(ii) a Wherein A and B are both coefficient values of the real-time dew point temperature, and the coefficient values represented by A and B are different; t isDewRH is the indoor relative humidity, TIndoor useIs the room temperature.
Specifically, in the present embodiment, the different dehumidification modes include a cooling and moisturizing mode, a cooling and dehumidifying mode, a heating and moisturizing mode, and a heating and dehumidifying mode; before entering the modes, comparing the indoor temperature with the indoor target temperature, the indoor relative humidity with the indoor target humidity, and the inner coil temperature with the real-time dew point temperature; and then, selecting to enter different dehumidification modes according to different comparison results.
Specifically, in this embodiment, when the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is less than or equal to the indoor target humidity, the air conditioner is controlled to enter a cooling and moisturizing mode; the cooling and moisturizing mode is mainly used in a high-temperature environment, and the air conditioner performs cooling and does not dehumidify in this mode under the condition that the indoor relative humidity is below the indoor target humidity.
When the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is greater than the indoor target humidity, controlling the air conditioner to enter a cooling and dehumidifying mode; the cooling and dehumidifying mode is mainly used in a high temperature environment, and in this mode, the air conditioner performs cooling and dehumidifying when the indoor relative humidity exceeds the indoor target humidity.
When the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is lower than or equal to the indoor target humidity, controlling the air conditioner to enter a heating and moisturizing mode; the heating and moisturizing mode is mainly used in a low-temperature environment, and when the indoor relative humidity is lower than the indoor target humidity, the air conditioner controls electric heating to perform heating without dehumidification in the mode.
When the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is higher than the indoor target humidity, controlling the air conditioner to enter a heating and dehumidifying mode; the temperature-increasing dehumidification mode is mainly used in a low-temperature environment, and when the indoor relative humidity exceeds the indoor target humidity, the air conditioner controls electric heating to perform heating and dehumidification in the mode.
That is, the step S200 specifically includes the following steps:
step S210, comparing the indoor temperature with an indoor target temperature, the indoor relative humidity with an indoor target humidity, and the temperature of the inner coil pipe with a real-time dew point temperature;
step S220, when the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is less than or equal to the indoor target humidity, controlling the air conditioner to enter a cooling and moisturizing mode;
step S230, when the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is greater than the indoor target humidity, controlling the air conditioner to enter a cooling and dehumidifying mode;
step S240, when the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is lower than or equal to the indoor target humidity, controlling the air conditioner to enter a heating and moisturizing mode;
and S250, when the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is higher than the indoor target humidity, controlling the air conditioner to enter a heating and dehumidifying mode.
This embodiment is through the contrast indoor temperature with the size of indoor target temperature, indoor relative humidity with the size of indoor target humidity, and interior coil pipe temperature with real-time dew point temperature's size for the air conditioner can select to get into different dehumidification modes according to indoor actual environment, thereby makes the indoor environment be in the state of constant temperature and constant humidity.
And step S300, controlling the running frequency and the electric heating state of a compressor according to the dehumidification mode entered by the air conditioner.
Specifically, in this embodiment, when the air conditioner enters the cooling and moisturizing mode, the air conditioner controls the electrical heating to be turned off, and controls the operating frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature; for example, in the case that the temperature of the inner coil is greater than the real-time dew point temperature, the air conditioner may control the compressor to operate at a first preset frequency; because the temperature of the inner coil pipe at this time is greater than the real-time dew point temperature, the air conditioner only needs to perform normal refrigeration, that is, the first preset frequency can be set as the normal refrigeration operating frequency of the air conditioner compressor; and under the condition that the temperature of the inner coil is less than or equal to the real-time dew point temperature, the air conditioner controls the compressor to operate at a second preset frequency; because the temperature of the inner coil at this time is less than the real-time dew point temperature, it is indicated that the refrigeration temperature of the air conditioner at this time is too low, and the operating frequency of the compressor is too high, so that the operating frequency of the compressor needs to be reduced to achieve the effect of constant temperature, that is, the second preset frequency can be set to be less than the first preset frequency.
Specifically, in this embodiment, when the air conditioner enters the cooling and dehumidifying mode, the air conditioner controls the electrical heating to be turned off, and controls the operating frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature; for example, when the temperature of the inner coil is greater than the real-time dew point temperature, the air conditioner may control the compressor to operate at a third preset frequency, and since the temperature of the inner coil is greater than the real-time dew point temperature, it indicates that the indoor heat exchanger of the air conditioner is not dehumidifying, and the working efficiency of the compressor needs to be improved, thereby achieving the effects of cooling and dehumidifying, the third preset frequency may be set to be greater than the first preset frequency; and under the condition that the temperature of the inner coil is less than or equal to the real-time dew point temperature, the air conditioner controls the compressor to operate at the first preset frequency; because the temperature of the inner coil at the moment is lower than the real-time dew point temperature, the indoor heat exchanger of the air conditioner dehumidifies and does not need to increase the operating frequency of the compressor, and therefore, the normal refrigeration is only needed.
Specifically, in this embodiment, when the air conditioner enters a warming and moisturizing mode, the electric heater is controlled to be turned on, and the compressor is turned off; in the dehumidification mode, dehumidification is not needed, and only temperature rise is needed, so that the compressor can be closed to reduce the energy consumption of the air conditioner; heating is performed by turning on the electric heating so that the temperature in the room is constant within a certain range.
Specifically, in this embodiment, when the air conditioner enters the heating and dehumidifying mode, the electric heating is controlled to be turned on, and the indoor fan is controlled to operate at the lowest gear; in the dehumidification mode, the operation frequency of the compressor is also controlled according to the temperature of the inner coil and the real-time dew point temperature; for example, in the case that the temperature of the inner coil is less than or equal to the real-time dew point temperature, the air conditioner controls the compressor to operate at the first preset frequency; because the temperature of the inner coil pipe at the moment is less than the real-time dew point temperature, the fact that the indoor heat exchanger of the air conditioner dehumidifies is explained, and therefore, the operation frequency of the compressor only needs to be kept unchanged; and under the condition that the temperature of the inner coil pipe is greater than the real-time dew point temperature, the indoor heat exchanger of the air conditioner does not dehumidify, and the running frequency of the compressor needs to be increased, so that the fourth preset frequency can be set to be greater than the first preset frequency.
Specifically, the control method for different dehumidification modes is as follows:
1. when entering a cooling and moisturizing mode, controlling the electric heating to be closed; then, the temperature T of the inner tube plate is comparedInner pipeAnd real-time dew point temperature TDewThe size of (d); t isInner pipe≤TDewControlling the compressor to reduce the frequency (for example, reducing the frequency by 2 Hz); t isInner pipe＞TDewAnd the indoor heat exchanger does not dehumidify and the compressor is controlled to keep the frequency unchanged.
2. When entering a cooling and dehumidifying mode, controlling the electric heating to be closed; then, the temperature T of the inner tube plate is comparedInner pipeAnd real-time dew point temperature TDewThe size of (d); t isInner pipe≤TDewControlling the compressor to keep the frequency unchanged; t isInner pipe＞TDewAnd the indoor heat exchanger does not dehumidify at present, and the raising frequency of the compressor is controlled (for example, the raising frequency is 2 Hz).
3. When entering a heating and moisturizing mode, controlling the electric heating to be started; thereafter, the compressor is controlled to be turned off.
4. When entering a temperature-raising dehumidification mode, controlling the electric heating to be started; then, controlling the indoor fan to operate at the lowest gear; temperature T of inner tube plateInner pipeAnd real-time dew point temperature TDewThe size of (d); t isInner pipe≤TDewControlling the compressor to keep the frequency unchanged; t isInner pipe＞TDewAnd the indoor heat exchanger does not dehumidify at present, and the raising frequency of the compressor is controlled (for example, the raising frequency is 2 Hz).
The constant temperature dehumidification function is realized by controlling the frequency of the compressor and controlling the on-off state of the heater and the rotating speed of the indoor fan in a matching way; and the low-temperature dehumidification effect is ensured under the condition of not increasing the cost.
The following is illustrated by specific examples:
as shown in fig. 2, the constant temperature dehumidification control method includes the following steps:
step S1, the air conditioner enters a constant temperature dehumidification mode;
step S2, detecting indoor temperature TIndoor useIndoor relative humidity RHIndoor useAnd inner tube plate temperature TInner pipe(ii) a Obtaining a set indoor target temperature TIs provided withAnd indoor target humidity RHIs provided with(ii) a Calculating the real-time moisture content dIndoor useTarget moisture content dIs provided withAnd real time dew point temperature TDew；
Step S3, comparing the indoor target temperature TIs provided withAnd indoor temperature TIndoor useIs compared with the target moisture content dIs provided withWith real time moisture content dIndoor useThe size of (d); the comparison results are S4, S6, S8 and S9 respectively;
step S4, target temperature TIs provided withIndoor temperature T is less than or equal toIndoor useAnd a real-time moisture content dIndoor useTarget moisture content d ≦Is provided withEntering a cooling and moisturizing mode, and controlling the electric heating to be closed;
step S5, comparing the inner tube plate temperature TInner pipeAnd real-time dew point temperature TDewThe size of (d); t isInner pipe≤TDewControlling the compressor to reduce the frequency; t isInner pipe＞TDewControlling the frequency of the compressor to be unchanged;
step S6, target temperature TIs provided withIndoor temperature T is less than or equal toIndoor useAnd a real-time moisture content dIndoor useTarget moisture content dIs provided withEntering a cooling and dehumidifying mode, and controlling the electric heating to be closed;
step S7, comparing the inner tube plate temperature TInner pipeAnd real-time dew point temperature TDewThe size of (d); t isInner pipe≤TDewControlling the frequency of the compressor to be unchanged; t isInner pipe＞TDewControlling the frequency of the compressor to be increased;
step S8, target temperature TIs provided with> indoor temperature TIndoor useAnd a real-time moisture content dIndoor useTarget moisture content d ≦Is provided withEntering a heating and moisturizing mode, and controlling the electric heating to be started; controlling the compressor to be closed;
step S9, target temperature TIs provided with> indoor temperature TIndoor useAnd a real-time moisture content dIndoor useTarget moisture content dIs provided withEntering a temperature-raising dehumidification mode, and controlling the electric heating to be started; controlling the indoor fan to operate at the lowest gear;
step S10, comparing the inner tube plate temperature TInner pipeAnd real-time dew point temperature TDewThe size of (d); t isInner pipe≤TDewControlling the frequency of the compressor to be unchanged; t isInner pipe＞TDewAnd controlling the frequency of the compressor to be increased.
In summary, the present embodiment enables the air conditioner to realize the constant temperature dehumidification function by controlling the operation frequency and the electric heating state of the compressor without increasing the cost.
Example two
As shown in fig. 3, the air conditioner according to the preferred embodiment of the present invention includes an indoor unit 10 and an outdoor unit 20 connected to the indoor unit 10;
the outdoor unit 20 includes at least a compressor;
the indoor unit 10 at least comprises a control device, an electric heater, an indoor fan, an indoor temperature sensor, an indoor humidity sensor and an inner coil temperature sensor; the electric heater, the indoor fan, the indoor temperature sensor, the indoor humidity sensor and the inner coil temperature sensor are respectively electrically connected with the control device; the indoor temperature sensor is used for acquiring indoor temperature; the indoor humidity sensor is used for acquiring indoor relative humidity; the inner coil temperature sensor is used for acquiring the temperature of the inner coil;
the control device comprises a processor and a memory connected with the processor; the memory stores a constant temperature dehumidification control program, and the constant temperature dehumidification control program is used for realizing the constant temperature dehumidification control method in the first embodiment when being executed by the processor; as described above.
EXAMPLE III
The storage medium according to a preferred embodiment of the present invention stores a constant temperature dehumidification control program, and the constant temperature dehumidification control program is executed by a processor to implement the constant temperature dehumidification control method according to the first embodiment; as described above.
In summary, the invention provides a constant temperature dehumidification control method, an air conditioner and a storage medium, by acquiring an indoor temperature, an indoor relative humidity and an inner pipe plate temperature, and controlling the air conditioner to enter different dehumidification modes according to the indoor temperature, the indoor relative humidity and the inner pipe plate temperature; in different dehumidification modes, the air conditioner can realize the constant-temperature dehumidification function by controlling the running frequency of the compressor and the electric heating state without increasing the cost.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A constant-temperature dehumidification control method is characterized by comprising the following steps:
acquiring indoor temperature, indoor relative humidity and inner coil temperature;
controlling an air conditioner to enter different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the temperature of the inner coil and the real-time dew point temperature, wherein the real-time dew point temperature is obtained according to the indoor temperature and the indoor relative humidity;
controlling the running frequency and the electric heating state of a compressor according to the dehumidification mode entered by the air conditioner;
the method specifically comprises the following steps of controlling the air conditioner to enter different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the temperature of the inner coil and the real-time dew point temperature:
when the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is greater than the indoor target humidity, controlling the air conditioner to enter a cooling and dehumidifying mode;
the controlling of the operating frequency and the electric heating state of the compressor according to the dehumidification mode entered by the air conditioner specifically includes the steps of:
when the air conditioner enters a cooling and dehumidifying mode, controlling the electric heating to be turned off, and controlling the running frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature;
when the temperature of the inner coil is less than or equal to the real-time dew point temperature, controlling the compressor to keep the frequency unchanged;
and when the temperature of the inner coil is greater than the real-time dew point temperature, controlling the compressor to increase the frequency.
2. The constant temperature dehumidification control method according to claim 1, wherein the obtaining of the indoor temperature, the indoor relative humidity and the inner pipe tray temperature comprises the following steps:
setting the indoor target temperature and the indoor target humidity.
3. The constant-temperature dehumidification control method according to claim 1, wherein the step of controlling the air conditioner to enter different dehumidification modes according to the indoor temperature and the indoor target temperature, the indoor relative humidity and the indoor target humidity, and the inner coil temperature and the real-time dew point temperature specifically comprises the following steps:
comparing the indoor temperature with the indoor target temperature, the indoor relative humidity with the indoor target humidity, and the temperature of the inner coil pipe with the real-time dew point temperature;
when the indoor temperature is greater than or equal to the indoor target temperature and the indoor relative humidity is less than or equal to the indoor target humidity, controlling the air conditioner to enter a cooling and moisturizing mode;
when the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is lower than or equal to the indoor target humidity, controlling the air conditioner to enter a heating and moisturizing mode;
and when the indoor temperature is lower than the indoor target temperature and the indoor relative humidity is higher than the indoor target humidity, controlling the air conditioner to enter a heating and dehumidifying mode.
4. The constant-temperature dehumidification control method according to claim 3, wherein the controlling of the operating frequency and the state of electric heating of the compressor according to the dehumidification mode entered by the air conditioner specifically comprises the steps of:
when the air conditioner enters a cooling and moisturizing mode, controlling the electric heating to be turned off, and controlling the running frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature;
when the air conditioner enters a heating and moisturizing mode, controlling the electric heating to be started, and closing the compressor;
and when the air conditioner enters a heating and dehumidifying mode, controlling the electric heating to be started, and controlling the running frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature.
5. The constant-temperature dehumidification control method according to claim 4, wherein when the air conditioner enters a cooling and moisturizing mode, the electric heating is controlled to be turned off, and the operation frequency of the compressor is controlled according to the temperature of the inner coil and the real-time dew point temperature, and specifically comprises the following steps:
when the air conditioner enters a cooling and moisturizing mode, controlling the electric heating to be turned off, and comparing the temperature of the inner coil with the real-time dew point temperature;
when the temperature of the inner coil pipe is higher than the real-time dew point temperature, controlling the compressor to operate at a first preset frequency;
when the temperature of the inner coil is less than or equal to the real-time dew point temperature, controlling the compressor to operate at a second preset frequency;
the first preset frequency is the operating frequency of normal refrigeration of the compressor; the second preset frequency is smaller than the first preset frequency.
6. The constant-temperature dehumidification control method according to claim 5, wherein when the air conditioner enters a cooling dehumidification mode, the controlling of the electrical heating to be turned off and the controlling of the operating frequency of the compressor according to the temperature of the inner coil and the real-time dew point temperature specifically comprise the following steps:
when the air conditioner enters a cooling and dehumidifying mode, controlling the electric heating to be turned off, and comparing the temperature of the inner coil with the real-time dew point temperature;
when the temperature of the inner coil pipe is higher than the real-time dew point temperature, controlling the compressor to operate at a third preset frequency;
when the temperature of the inner coil is less than or equal to the real-time dew point temperature, controlling the compressor to operate at the first preset frequency;
wherein the third preset frequency is greater than the first preset frequency.
7. The constant-temperature dehumidification control method according to claim 5, wherein when the air conditioner enters a temperature-raising dehumidification mode, the electric heating is controlled to be turned on, and the operation frequency of the compressor is controlled according to the temperature of the inner coil and the real-time dew point temperature, and specifically comprises the following steps:
when the air conditioner enters a heating and dehumidifying mode, the electric heating is controlled to be started, and the temperature of the inner coil is compared with the real-time dew point temperature;
when the temperature of the inner coil is less than or equal to the real-time dew point temperature, controlling the compressor to operate at the first preset frequency;
when the temperature of the inner coil pipe is higher than the real-time dew point temperature, controlling the compressor to operate at a fourth preset frequency;
wherein the fourth preset frequency is greater than the first preset frequency.
8. The constant-temperature dehumidification control method according to claim 4, wherein when the air conditioner enters a heating and dehumidification mode, the electric heating is controlled to be turned on, and the operation frequency of the compressor is controlled according to the temperature of the inner coil and the real-time dew point temperature, and further comprising the following steps:
and when the air conditioner enters a heating and dehumidifying mode, controlling an indoor fan of the air conditioner to operate at a preset gear.
9. An air conditioner is characterized by comprising an indoor unit and an outdoor unit connected with the indoor unit;
the outdoor unit at least comprises a compressor;
the indoor unit at least comprises a control device, an electric heater, an indoor fan, an indoor temperature sensor, an indoor humidity sensor and an inner coil temperature sensor; the electric heater, the indoor fan, the indoor temperature sensor, the indoor humidity sensor and the inner coil temperature sensor are respectively electrically connected with the control device; the indoor temperature sensor is used for acquiring indoor temperature; the indoor humidity sensor is used for acquiring indoor relative humidity; the inner coil temperature sensor is used for acquiring the temperature of the inner coil;
the control device comprises a processor and a memory connected with the processor; the memory stores a constant temperature dehumidification control program, which is executed by the processor to implement the constant temperature dehumidification control method according to any one of claims 1 to 8.
10. A storage medium storing a constant temperature dehumidification control program, which when executed by a processor, is configured to implement the constant temperature dehumidification control method according to any one of claims 1 to 8.
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| CN111076316A (en) * | 2019-12-09 | 2020-04-28 | 广东申菱环境系统股份有限公司 | Humidity control method |
| CN111023512A (en) * | 2019-12-27 | 2020-04-17 | Tcl空调器(中山)有限公司 | Air conditioner temperature and humidity control method and device and air conditioner |
| CN111023401B (en) * | 2019-12-31 | 2021-03-02 | 海信（广东）空调有限公司 | Dehumidification control method of air conditioner and air conditioner |
| CN111623467B (en) * | 2020-05-12 | 2021-11-02 | 海信（广东）空调有限公司 | Air conditioner control method and air conditioner |
| CN111609516B (en) * | 2020-06-03 | 2022-01-25 | 宁波奥克斯电气股份有限公司 | Temperature and humidity control method and air conditioner |
| CN111706972B (en) * | 2020-06-04 | 2023-02-17 | 青岛海尔空调器有限总公司 | Control method and control device for dehumidification of air conditioner and air conditioner |
| CN111878965A (en) * | 2020-07-29 | 2020-11-03 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
| CN112178889B (en) * | 2020-09-28 | 2021-12-03 | 珠海格力电器股份有限公司 | Temperature and humidity control method of air conditioner and air conditioner |
| CN112413857B (en) * | 2020-11-23 | 2022-05-17 | 珠海格力电器股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN114135977B (en) * | 2021-11-22 | 2023-07-21 | 宁波奥克斯电气股份有限公司 | Heating control method and device of air conditioner and air conditioner |
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| CN102032643B (en) * | 2009-09-25 | 2012-08-29 | 珠海格力电器股份有限公司 | Constant temperature dehumidification controlling method for air conditioner |
| CN105157168B (en) * | 2015-08-24 | 2017-12-08 | 合肥美的暖通设备有限公司 | A kind of air conditioner dehumidification control method, controller and air conditioner |
| CN107314508B (en) * | 2017-07-20 | 2020-04-14 | 广东美的暖通设备有限公司 | Air conditioner control method, air conditioner and computer readable storage medium |
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