CN106288138B - The warm and humid dual control method, apparatus of air conditioner and air conditioner room unit - Google Patents
The warm and humid dual control method, apparatus of air conditioner and air conditioner room unit Download PDFInfo
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- CN106288138B CN106288138B CN201510325852.2A CN201510325852A CN106288138B CN 106288138 B CN106288138 B CN 106288138B CN 201510325852 A CN201510325852 A CN 201510325852A CN 106288138 B CN106288138 B CN 106288138B
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000009977 dual effect Effects 0.000 title claims abstract description 11
- 238000007791 dehumidification Methods 0.000 claims abstract description 67
- 238000011282 treatment Methods 0.000 claims abstract description 18
- 230000003020 moisturizing effect Effects 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims description 51
- 238000005057 refrigeration Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000004576 sand Substances 0.000 description 19
- 238000001816 cooling Methods 0.000 description 10
- 238000013507 mapping Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
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Abstract
The invention discloses a kind of methods of the warm and humid dual control of air conditioner, comprising: in the process of refrigerastion of air conditioner, obtains current indoor temperature, controls the difference of the current indoor temperature and target indoor temperature less than the first preset threshold；Current indoor temperature and current indoor humidity are obtained, and current indoor water capacity is calculated according to the current indoor temperature and current indoor humidity；If current indoor water capacity meets preset dehumidifying condition, air conditioner carries out dehumidification treatments；If current indoor water capacity meets preset moisturizing condition, air conditioner carries out moisturizing processing.The invention also discloses a kind of warm and humid double-control apparatus of air conditioner and air conditioner room units.The present invention realizes in the process of refrigerastion of air conditioner, while guaranteeing user for temperature requirements, and realizes the control to humidity.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a temperature and humidity double-control method and device for an air conditioner and an air conditioner indoor unit.
Background
In the process of refrigerating operation of the air conditioner, before the room temperature reaches the set temperature and when the room load is large, the air conditioner needs large refrigerating capacity for cooling and maintaining the load, the air conditioner always keeps high frequency operation, the temperature of an indoor heat exchanger coil is too low, if the temperature of the indoor heat exchanger coil is always lower than the dew point temperature of indoor air, the air conditioner is always in a refrigerating and dehumidifying state, and the air conditioner feels very dry in the process of using the air conditioner. Accordingly, when the load of the room is small, the air conditioner needs a small amount of cooling to maintain the load, and the air conditioner always operates at a low frequency, which causes the temperature of the coil pipe of the indoor heat exchanger to be high, and if the temperature of the coil pipe of the indoor heat exchanger is always higher than the dew point temperature of the indoor air, the air conditioner is always in a state of cooling and not dehumidifying, which causes the air conditioner to feel stuffy during the use process.
At present, a peripheral humidifier or other humidifying equipment is mainly used for controlling the humidity of the air conditioner in the refrigeration process, and the humidifier is adopted for humidifying when a room is dry in the refrigeration and dehumidification process. In the process of refrigeration and dehumidification, the room is difficult to keep in a comfortable range under different temperatures, so that the air conditioner cannot realize moisture preservation operation in the use process, a user feels dry or stuffy moisture easily, and the comfort requirement on the temperature and the humidity when the user uses the air conditioner is difficult to meet.
Disclosure of Invention
The invention mainly aims to provide a temperature and humidity double-control method and device for an air conditioner and an air conditioner indoor unit, and aims to realize that the air conditioner can control the humidity while refrigerating.
In order to achieve the purpose, the invention provides a temperature and humidity double control method of an air conditioner, which comprises the following steps:
s1, acquiring the current indoor temperature in the refrigeration process of the air conditioner, and controlling the difference value △ T between the current indoor temperature and the target indoor temperature to be smaller than a first preset threshold value;
s2, acquiring the current indoor temperature and the current indoor humidity, and calculating the current indoor moisture content according to the current indoor temperature and the current indoor humidity;
s3, if the current indoor moisture content meets the preset dehumidification condition, the air conditioner carries out dehumidification treatment;
and S4, if the current indoor moisture content meets the preset moisture preservation condition, the air conditioner performs moisture preservation treatment.
Preferably, the step S1 is preceded by:
when the air conditioner enters a refrigeration mode, calculating to obtain the moisture content in the target room or obtain the default target indoor moisture content according to the set target indoor temperature and target indoor humidity;
and obtaining a preset dehumidification condition and a preset moisture preservation condition according to the target indoor moisture content.
Preferably, the obtaining of the preset dehumidification condition and the preset moisture preservation condition according to the target indoor moisture content includes:
according to the target indoor moisture content, determining that the preset dehumidification condition is that the current indoor moisture content is larger than the target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is smaller than or equal to the target indoor moisture content; or,
and calculating to obtain a first target indoor moisture content and a second target indoor moisture content according to the target indoor moisture content and a preset allowable floating value, determining that the preset dehumidification condition is that the current indoor moisture content is greater than the first target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is less than the second target indoor moisture content.
Preferably, the step S3 of performing the dehumidification by the air conditioner includes:
s301, acquiring the current indoor heat exchanger coil temperature and the dew point temperature corresponding to the current indoor humidity;
s302, reducing the air speed of the air conditioner to enable the temperature of the coil of the indoor heat exchanger to be smaller than or equal to the dew point temperature corresponding to the current indoor humidity;
and S303, when the temperature of the coil of the current indoor heat exchanger is less than or equal to the dew point temperature corresponding to the current indoor humidity, keeping the current state of the air conditioner to operate for a third preset time, and then turning to the step S2.
Preferably, the step S4 of moisturizing the air conditioner includes:
s401, acquiring the current indoor heat exchanger coil temperature and the dew point temperature corresponding to the current indoor humidity;
s402, reducing the running frequency of a compressor of the air conditioner to enable the temperature of a coil of a current indoor heat exchanger to be larger than the dew point temperature corresponding to the current indoor humidity;
s403, when the temperature of the coil of the indoor heat exchanger is higher than the dew point temperature corresponding to the current indoor humidity, judging whether the current indoor temperature reaches the target indoor temperature;
s404, when the current indoor temperature reaches the target indoor temperature, keeping the current state of the air conditioner to operate, and turning to the step S2;
s405, when the current indoor temperature does not reach the target indoor temperature, controlling the air conditioner to refrigerate according to the current indoor temperature and the target indoor temperature, and after the air conditioner operates for a fifth preset time in a refrigerating mode, turning to the step S401.
In addition, in order to achieve the above object, the present invention further provides a temperature and humidity double control device for an air conditioner, comprising:
the temperature difference calculation module is used for acquiring the current indoor temperature in the refrigeration process of the air conditioner and calculating the difference value △ T between the current indoor temperature and the target indoor temperature;
the indoor moisture content acquisition module is used for acquiring the current indoor temperature and the current indoor humidity and calculating the current indoor moisture content according to the current indoor temperature and the current indoor humidity; the indoor moisture content acquisition module is further used for calculating and acquiring the target indoor moisture content or acquiring the default target indoor moisture content according to the set target indoor temperature and the target indoor humidity when the air conditioner enters the refrigeration mode;
the dehumidification control module is used for judging whether the current indoor moisture content meets the preset dehumidification condition or not, and controlling the air conditioner to perform dehumidification treatment if the current indoor moisture content meets the preset dehumidification condition;
and the moisture preservation control module is used for judging whether the current indoor moisture content meets the preset moisture preservation condition or not, and controlling the air conditioner to carry out moisture preservation treatment if the current indoor moisture content meets the preset moisture preservation condition.
And the humidity control judging module is used for obtaining a preset dehumidification condition and a preset moisture preservation condition according to the target indoor moisture content and judging whether the air conditioner carries out dehumidification treatment or moisture preservation treatment according to the preset dehumidification condition and the preset moisture preservation condition.
Preferably, the humidity control determination module is specifically configured to:
according to the target indoor moisture content, determining that the preset dehumidification condition is that the current indoor moisture content is larger than the target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is smaller than or equal to the target indoor moisture content; or,
and calculating to obtain a first target indoor moisture content and a second target indoor moisture content according to the target indoor moisture content and a preset allowable floating value, determining that the preset dehumidification condition is that the current indoor moisture content is greater than the first target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is less than the second target indoor moisture content.
Preferably, the dehumidification control module is specifically configured to: the air speed of the air conditioner is reduced, so that the current temperature of the coil of the indoor heat exchanger is less than or equal to the dew point temperature corresponding to the current indoor humidity; and when the current temperature of the coil of the indoor heat exchanger is less than or equal to the dew point temperature corresponding to the current indoor humidity, keeping the current state of the air conditioner to operate for a third preset time.
Preferably, the moisturizing control module is specifically configured to:
the method comprises the steps that the running frequency of a compressor of the air conditioner is reduced, so that the temperature of a coil pipe of a current indoor heat exchanger is higher than the dew point temperature corresponding to the current indoor humidity; when the current indoor heat exchanger coil temperature is higher than the dew point temperature corresponding to the current indoor humidity, judging whether the current indoor temperature reaches the target indoor temperature; and when the current indoor temperature reaches the target indoor temperature, keeping the current state of the air conditioner to operate.
In addition, in order to achieve the purpose, the invention also provides an air conditioner indoor unit, wherein an indoor temperature sensor and an indoor humidity sensor are arranged on the air conditioner indoor unit, the indoor temperature sensor is used for collecting indoor temperature in real time, the indoor humidity sensor is used for collecting indoor humidity in real time, the air conditioner also comprises a temperature and humidity double-control device of the air conditioner with the structure, and the control device is used for controlling the air conditioner to operate by combining the current indoor temperature, the target indoor temperature, the current indoor humidity and the target indoor humidity.
After the air conditioner enters a refrigeration mode, calculating according to a target indoor temperature and a target indoor humidity set by a user to obtain a target indoor moisture content, or directly obtaining a preset default target indoor moisture content; when the current indoor temperature is close to the target indoor temperature, the air conditioner starts to calculate and obtain the current indoor moisture content according to the detected current indoor temperature and the current indoor humidity, the air conditioner judges whether dehumidification or moisture preservation is needed at the moment through comparison with the target indoor moisture content, and the air conditioner is controlled to perform dehumidification or moisture preservation according to the judgment result, so that the air conditioner can realize the control of the humidity while refrigerating.
Drawings
FIG. 1 is a schematic flow chart illustrating a temperature and humidity dual control method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a dehumidification control module of an air conditioner according to an embodiment of a temperature and humidity dual control method of the air conditioner of the present invention;
FIG. 3 is a schematic flow chart of a humidity maintaining control module of an air conditioner according to an embodiment of the temperature and humidity dual control method of the air conditioner of the present invention;
FIG. 4 is a schematic diagram of functional modules of the temperature and humidity dual control device of the air conditioner of the present invention;
fig. 5 is a diagram illustrating an embodiment of an indoor unit of an air conditioner for implementing dual temperature and humidity control according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main core idea of the invention is that after the air conditioner enters a refrigeration mode, a target indoor moisture content (the content of water vapor in 1kg of air, unit g/kg) is obtained by calculation according to a target indoor temperature and a target indoor humidity set by a user, or a preset default target indoor moisture content is directly obtained; when the current indoor temperature is close to the target indoor temperature, the air conditioner starts to calculate and obtain the current indoor moisture content according to the detected current indoor temperature and the current indoor humidity, the air conditioner judges whether dehumidification or moisture preservation is needed at the moment through comparison with the target indoor moisture content, and the air conditioner is controlled to perform dehumidification or moisture preservation according to the judgment result, so that the air conditioner can realize the control of the humidity while refrigerating.
Fig. 1 shows an embodiment of a temperature and humidity dual control method for an air conditioner according to the present invention. The temperature and humidity double control method of the air conditioner comprises the following steps:
step S110, the air conditioner obtains the target indoor temperature T set by the userSAir speed V of air conditioner set by user or system defaultSTarget indoor humidity phi set by user or system defaultSAnd according to said target indoor temperature TSAnd target indoor humidity ΦSCalculating target indoor moisture content dS；
In this embodiment, when the air conditioner is powered on and starts up and enters the cooling mode, the target indoor temperature T set by the user is obtainedSAir speed V of air conditioner set by userSTarget indoor humidity phi set by userSAnd according to said target indoor temperature TSAnd target indoor humidity ΦSObtaining the corresponding target indoor moisture content d by the calculation formula HS。
The moisture content is the mass of water vapor in the moist air concurrently with one kilogram of dry air, and the calculation formula H for the moisture content can be expressed as follows:
wherein d represents the moisture content, PSDenotes the partial pressure of water vapor, P denotes the air pressure, and a is a predetermined coefficient, and in the present embodiment, a is 622. PSThere is a known calculable mapping with temperature and humidity.
In another embodiment, when the air conditioner is started at power-on and enters the cooling mode, the default target indoor moisture content d can be directly acquiredSDefault target indoor humidity ΦSOr default air conditioner air speed VS. It should be noted that, in the following description,
the default target indoor moisture content dSThat is, the air conditioner does not set the target indoor humidity ΦSUnder the condition of (1), directly acquiring the moisture content d in a default target chamber preset by the systemS. Predetermined default target indoor moisture content dSIs obtained according to a great deal of existing experience values of the relationship between the human body comfort and the indoor humidity, temperature and moisture content, and defaults to the preset default target indoor moisture content dSThe user feels comfortable. In this embodiment, the default target indoor moisture content dSThe weight ratio can be 10g/kg, or other values can be set flexibly according to actual needs.
The default target indoor humidity ΦSThat is, the air conditioner does not set the target indoor humidity ΦSAccording to the set target indoor temperature TSAnd a preset target indoor moisture content dSAnd the calculation is obtained by the calculation formula H. The default target indoor humidity ΦSCan be used for displaying on the air conditioner so as to be viewed by a user or set a desired indoor humidity according to the reference.
The default air speed V of the air conditionerSThat is, the air conditioner will set V when the user does not set the wind speedSThe value is a preset default wind speed, which may be a preset wind speed of the automatic wind or a wind speed before the air conditioner is turned off when the air conditioner is used last time.
Step S120, detecting the current indoor temperature T in real time while the air conditioner is in refrigeration operation1And calculating the current indoor temperature T1With a target indoor temperature TS△ T;
the current indoor temperature T1Is detected and obtained by a temperature sensor arranged on an indoor unit of the air conditioner. After the user sets the operating parameters of the air conditioner, the air conditioner operates in a refrigerating mode, and the temperature sensor detects the current indoor temperature T in real time during the period1And calculating the current indoor temperature T1With a target indoor temperature TS△ T.
Step S130, comparing the difference value △ T with a first preset threshold D1The size of (d);
the first preset threshold value D1It may be set to a specific value, for example, 1 deg.C, 2 deg.C, depending on the actual situation. The first predetermined threshold D in this embodiment1The value was 1 ℃.
Step S140, if △ T>D1Then go to step S120;
△T>D1the air conditioner needs to continue to perform cooling operation and detect the current indoor temperature T in real time1Therefore, it is necessary to proceed to step S120.
In the steps S110 to S140, during the refrigeration process, the air conditioner is controlled to operate according to the acquired current indoor temperature, so that the difference between the current indoor temperature and the target indoor temperature is smaller than a first preset threshold.
Step S150, if △ T is less than or equal to D1The air conditioner detects the current indoor temperature T in real time1And the current indoor humidity phi1And according to the current indoor temperature T1And the current indoor humidity phi1Calculating the current indoor moisture content d1；
The current indoor humidity phi1Is detected and obtained by a humidity sensor arranged on an indoor unit of the air conditioner. The current chamber has a moisture content d1Is based on the current indoor temperature T1And the current indoor humidity phi1And (4) calculating by using a calculation formula H.
In another embodiment, the first predetermined threshold D1Value of 2 ℃ when △ T<D1Meanwhile, the air conditioner maintains the current running state and continues to run for a first preset time t1Then obtaining the current indoor temperature T through detection1And the current indoor humidity phi1And according to the current indoor temperature T1And the current indoor humidity phi1Calculating the current indoor moisture content d1. Wherein the first preset time t1The value of (1) is the time required for the temperature of the air conditioner to reach a relatively stable state, for example, 1min, and can be set according to actual conditions.
Step S160, according to the current indoor moisture content d1And target indoor moisture content dSJudging whether a dehumidification condition or a moisture preservation condition is met;
the air conditioner is based on the moisture content d in the target chamberSAnd obtaining a preset dehumidification condition and a preset moisture preservation condition. The method specifically comprises the following steps:
in the present embodiment, the target indoor moisture content d is determinedSDetermining the preset dehumidification condition as the current indoor moisture content d1Greater than the target chamber moisture content dSDetermining the preset moisture-keeping condition as the current indoor moisture content d1Less than or equal to the target chamber moisture content dS。
In another embodiment, the air conditioner is based on the target indoor moisture content dSAnd a predetermined allowable floating value A1And obtaining a preset dehumidification condition and a preset moisture preservation condition. The method specifically comprises the following steps:
according to the target indoor moisture content dSAnd a predetermined allowable floating value A1Calculating to obtain a first target indoor moisture content dS1And a second target indoor moisture content dS2Wherein the first target indoor moisture content dS1Greater than a second target indoor moisture content dS2. Determining the preset dehumidification condition as the current indoor moisture content d1Greater than a first target indoor moisture content dS1Determining the preset moisture-keeping condition as the current indoor moisture content d1Less than a second target indoor moisture content dS2。
The preset allowable floating value A1May be a percentage value, for example 5%, which may be set according to the actual situation. Said first target indoor moisture content dS1Can be according to the formula dS×(1+A1) Calculated to obtain the second target indoor moisture content dS2Can be according to the formula dS×(1－A1) And (6) calculating.
In the steps S150 to S160, the air conditioner obtains the current indoor temperature and the current indoor humidity, and calculates the current indoor moisture content according to the current indoor temperature and the current indoor humidity.
Step S170, if the current indoor moisture content meets the preset dehumidification condition, the air conditioner carries out dehumidification treatment;
and step S180, if the current indoor moisture content meets the preset moisture preservation condition, the air conditioner performs moisture preservation treatment.
In this embodiment, after the air conditioner enters the cooling mode, firstly, the indoor temperature is controlled to reach the target indoor temperature, and then, the indoor humidity is controlled to reach the target indoor humidity, so that the temperature requirement of the user is guaranteed, and meanwhile, the humidity is controlled.
Further, as shown in fig. 2, based on the foregoing embodiment, in the method for controlling temperature and humidity of an air conditioner according to the embodiment, the step S170 specifically includes the following steps:
s171, obtaining the current temperature T of the indoor heat exchanger coil2Dew point temperature T corresponding to current indoor humidityL；
The current indoor heat exchanger coil temperature T2The temperature is detected by a temperature sensor arranged in the coil pipe of the indoor heat exchanger.
The dew point temperature is the percentage value of the density of water vapor actually contained in the air and the density of saturated water vapor at the same temperature, and the dew point temperature mainly has a mapping relation with the temperature and the humidity of the indoor environment. In this embodiment, the dew point temperature T corresponding to the indoor environment is preset according to the existing known mapping relationship among the indoor temperature, the indoor humidity, and the dew point temperatureL. When the current indoor moisture content meets the preset moisture preservation condition, the temperature of the indoor heat exchanger coil is detected through the temperature sensor arranged on the indoor heat exchanger coil. While passing the detected current indoor temperature T1Current indoor humidity phi1Obtaining the current indoor temperature T1Current indoor humidity phi1Corresponding dew point temperature TL。
S172, comparing the current coil temperature T of the indoor heat exchanger2And dew point temperature TLThe size of (d);
s173, if T2＞TLAccording to a second preset threshold A2Reducing the air speed of the air conditioner and according to the preset target indoor temperature TSRefrigerating operation for a second preset time t2Then, the process proceeds to step S171;
the second preset threshold A for reducing the air speed of the air conditioner2May be a percentage, such as 10%. The second preset time t2Is a specific value, for example 5 min.
In the steps S172 to S173, the air speed of the air conditioner is reduced, so that the current temperature of the coil of the indoor heat exchanger is less than or equal to the dew point temperature corresponding to the current indoor humidity.
S174, if T2≤TLKeeping the current state of the air conditioner running for a third preset time t3Then, the process proceeds to step S150.
The third preset time t3Is a specific value, for example 5 min.
If the air conditioner starts to perform dehumidification treatment, the current indoor heat exchanger coil temperature T is obtained through comparison2Less than or equal to dew point temperature T corresponding to current indoor humidityLIf the air speed of the air conditioner is not reduced or adjusted, the current state operation of the air conditioner is to maintain the air speed set by a user or the system default air speed refrigeration operation. If the operation of reducing the wind speed is performed in the dehumidification process, the current state operation of the air conditioner is maintained, namely the last reduced wind speed refrigeration operation is maintained.
According to the embodiment of the invention, the temperature T of the coil pipe of the current indoor heat exchanger is reduced by reducing the wind speed of the air conditioner2Less than or equal to dew point temperature T corresponding to current indoor humidityLTherefore, the dehumidification function of the air conditioner is realized, the method is simple, and the requirement of a user on the temperature is ensured.
Further, as shown in fig. 3, based on the foregoing embodiment, in the method for controlling temperature and humidity of an air conditioner according to this embodiment, the step S180 specifically includes the following steps:
s181, obtaining the current coil temperature T of the indoor heat exchanger2Dew point temperature T corresponding to current indoor humidityL；
The current indoor heat exchanger coil temperature T2The temperature is detected by a temperature sensor arranged in the coil pipe of the indoor heat exchanger. Dew point temperature T corresponding to current indoor humidityLAccording to the mapping relation among the known indoor temperature, the indoor humidity and the dew point temperature.
S182, comparing the current coil temperature T of the indoor heat exchanger2Dew point temperature T corresponding to current indoor humidityLThe size of (d);
s183, if T2≤TLReducing the running frequency of the compressor of the air conditioner and keeping the running state to run for a fourth preset time t4Then, the process proceeds to step S181;
the running frequency of the compressor of the air conditioner can be reduced in a temperature compensation mode, and the frequency of the compressor can be modified according to a preset threshold value. The temperature compensation is realized by adjusting the target indoor temperature value, for example, the target indoor temperature T is adjusted every timeSAnd adding 1. The maximum frequency of the compressor is n times of the target indoor temperature value after being adjusted up, for example, n may be 1.2. The third preset threshold value for modifying the compressor frequency is a specific value, for example 5 Hz. The fourth preset time t4Is a specific value, for example 5 min.
In the steps S182 to S183, the current temperature of the coil of the indoor heat exchanger is greater than the dew point temperature corresponding to the current indoor humidity by reducing the operating frequency of the compressor of the air conditioner.
S184, if T2＞TLJudging the current indoor temperature T1Whether or not the target indoor temperature T is reachedS；
S185, if the current indoor temperature T is1Not reaching the target indoor temperature TSThe air conditioner keeps running for a fifth preset time t according to the maximum value of the set wind speed or the default wind speed5Then, the process proceeds to step S181.
The fifth preset time t5Is a specific value, for example 5 min.
S186, if the current indoor temperature T is1To the target indoor temperature TSThe air conditioner is according to the target indoor temperature TSAnd the current wind speed, and proceeds to step S150.
The embodiment of the invention reduces the running frequency of the compressor of the air conditioner to ensure that the temperature T of the coil pipe of the indoor heat exchanger is at present2Greater than the dew point temperature T corresponding to the current indoor humidityLTherefore, the moisturizing function of the air conditioner is realized, the method is simple, and the requirement of a user on the temperature is ensured.
Correspondingly, as shown in fig. 4, an embodiment of a temperature and humidity dual control device for an air conditioner according to the present invention is provided. The temperature and humidity double control device of the air conditioner of the embodiment comprises:
a temperature difference calculating module 100 for obtaining the current indoor temperature T during the cooling process of the air conditioner1And calculating the current indoor temperature T1And the target indoor temperature TS△ T;
after the user sets the operating parameters of the air conditioner, the air conditioner operates in a refrigerating mode, and the temperature sensor detects the current indoor temperature T in real time during the period1The temperature difference calculation module 100 obtains the current indoor temperature T1And target indoor temperature TSAnd calculating the current indoor temperature T1With a target indoor temperature TS△ T.
An indoor moisture content acquisition module 200 configured to acquire an indoor temperature and an indoor humidity, and calculate an indoor moisture content according to the indoor temperature and the indoor humidity;
in this embodiment, when the air conditioner is powered on and starts up and enters the cooling mode, the indoor moisture content obtaining module 200 obtains the target indoor temperature T set by the userSAnd target indoor humidity phi set by userSAnd according to said target indoor temperature TSAnd target indoor humidity ΦSObtaining the corresponding target indoor moisture content d by the calculation formula HS。
After the air conditioner performs refrigeration to make the indoor temperature close to the target indoor temperature, the indoor moisture content obtaining module 200 is further configured to obtain the current indoor temperature T1And the current indoor humidity phi1Calculated by using a calculation formula HAntechamber moisture content d1。
The moisture content is the mass of water vapor in the moist air concurrently with one kilogram of dry air, and the calculation formula H for the moisture content can be expressed as follows:
wherein d represents the moisture content, PSDenotes the partial pressure of water vapor, P denotes the air pressure, and a is a predetermined coefficient, and in the present embodiment, a is 622. PSThere is a known calculable mapping with temperature and humidity.
In another embodiment, when the air conditioner is powered on and enters the cooling mode, the indoor moisture content obtaining module 200 may also directly obtain the default target indoor moisture content dS. It should be noted that the default target indoor moisture content dSThat is, the air conditioner does not set the target indoor humidity ΦSUnder the condition of (1), directly acquiring the moisture content d in a default target chamber preset by the systemS. Predetermined default target indoor moisture content dSIs obtained according to a great deal of existing experience values of the relationship between the human body comfort and the indoor humidity, temperature and moisture content, and defaults to the preset default target indoor moisture content dSThe user feels comfortable. In this embodiment, the default target indoor moisture content dSThe weight ratio can be 10g/kg, or other values can be set flexibly according to actual needs.
The dehumidification control module 300 is configured to determine whether the current indoor moisture content meets a preset dehumidification condition, and control the air conditioner to perform dehumidification if the current indoor moisture content meets the preset dehumidification condition;
dehumidification control module 300 obtains current indoor heat exchanger coil temperature T2Dew point temperature T corresponding to current indoor humidityLAnd comparing the current coil temperature T of the indoor heat exchanger2Dew point corresponding to current indoor humidityTemperature TLThe size of (d); if T is2＞TLAccording to a second preset threshold A2Reducing the air speed of the air conditioner and according to the preset target indoor temperature TSRefrigerating operation for a second preset time t2Then obtaining the current coil temperature T of the indoor heat exchanger2Dew point temperature T corresponding to current indoor humidityL(ii) a If T is2≤TLKeeping the current state of the air conditioner running for a third preset time t3Then the air conditioner detects the current indoor temperature T in real time1And the current indoor humidity phi1And according to the current indoor temperature T1And the current indoor humidity phi1Calculating the current indoor moisture content d1。
If the air conditioner starts to perform dehumidification treatment, the current indoor heat exchanger coil temperature T is obtained through comparison2Less than or equal to dew point temperature T corresponding to current indoor humidityLIf the air speed of the air conditioner is not reduced or adjusted, the current state operation of the air conditioner is to maintain the air speed set by a user or the system default air speed refrigeration operation. If the operation of reducing the wind speed is performed in the dehumidification process, the current state operation of the air conditioner is maintained, namely the last reduced wind speed refrigeration operation is maintained.
And the moisture preservation control module 400 is configured to determine whether the current indoor moisture content meets a preset moisture preservation condition, and control the air conditioner to perform moisture preservation processing if the current indoor moisture content meets the preset moisture preservation condition.
The moisture retention control module 400 obtains the current indoor heat exchanger coil temperature T2Dew point temperature T corresponding to current indoor humidityLAnd comparing the current coil temperature T of the indoor heat exchanger2Dew point temperature T corresponding to current indoor humidityLThe size of (d); if T is2≤TLReducing the running frequency of the compressor of the air conditioner and keeping the running state to run for a fourth preset time t4Then obtaining the current coil temperature T of the indoor heat exchanger2Dew point temperature T corresponding to current indoor humidityL(ii) a If T is2＞TLJudging the current indoor temperature T1Whether or not the target indoor temperature T is reachedS(ii) a If the current indoor temperature T1To the target indoor temperature TSThe air conditioner is according to the target indoor temperature TSAnd the current wind speed VSKeeping running for a fifth preset time t5Then the air conditioner detects the current indoor temperature T in real time1And the current indoor humidity phi1And according to the current indoor temperature T1And the current indoor humidity phi1Calculating the current indoor moisture content d1。
When the running frequency of the compressor of the air conditioner is reduced, the frequency of the compressor can be modified in a temperature compensation mode or according to a preset threshold value. The temperature compensation is realized by adjusting the target indoor temperature value, for example, the target indoor temperature T is adjusted every timeSAnd adding 1. The maximum frequency of the compressor is n times of the target indoor temperature value after being adjusted up, for example, n may be 1.2. The third preset threshold value for modifying the compressor frequency is a specific value, for example 5 Hz. The fourth preset time t4And a fifth preset time t5Is a specific value, for example 5 min.
And the humidity control judging module 500 is configured to obtain a preset dehumidification condition and a preset moisture preservation condition according to the target indoor moisture content, and judge whether the air conditioner performs dehumidification or moisture preservation according to the preset dehumidification condition and the preset moisture preservation condition.
The humidity control and determination module 500 of the air conditioner determines the humidity according to the moisture content d in the target roomSAnd obtaining a preset dehumidification condition and a preset moisture preservation condition. The method specifically comprises the following steps:
determining the preset dehumidification condition as the current indoor moisture content d1Greater than the target chamber moisture content dSDetermining the preset moisture-keeping condition as the current indoor moisture content d1Less than or equal to the target chamber moisture content dS。
In another embodiment, the humidity control determination module 500 determines the target based on the targetMoisture content in the chamber dSAnd a predetermined allowable floating value A1And obtaining a preset dehumidification condition and a preset moisture preservation condition. The method specifically comprises the following steps:
calculating to obtain a first target indoor moisture content dS1And a second target indoor moisture content dS2Wherein the first target indoor moisture content dS1Greater than a second target indoor moisture content dS2. Determining the preset dehumidification condition as the current indoor moisture content d1Greater than a first target indoor moisture content dS1Determining the preset moisture-keeping condition as the current indoor moisture content d1Less than a second target indoor moisture content dS2。
The preset allowable floating value A1May be a percentage value, for example 5%, which may be set according to the actual situation. Said first target indoor moisture content dS1Can be according to the formula dS×(1+A1) Calculated to obtain the second target indoor moisture content dS2Can be according to the formula dS×(1－A1) And (6) calculating.
Correspondingly, as shown in fig. 5, an embodiment of an air conditioner indoor unit for implementing dual temperature and humidity control according to the present invention is shown. An indoor heat exchanger A1, an indoor fan A2, a temperature sensor A3 and a humidity sensor A4 can be arranged in the indoor unit of the air conditioner. The temperature sensor A3 is used for collecting indoor environment temperature; humidity sensor A4For collecting the humidity of the indoor air. In addition, the indoor unit of the air conditioner further comprises a control device A5, wherein the control device A5 is used for acquiring the current indoor temperature and the current indoor humidity, calculating the moisture content in the current front room according to the current indoor temperature and the current indoor humidity, and then controlling the air conditioner to perform dehumidification or moisture preservation operation according to the comparison between the current indoor moisture content and the acquired target indoor moisture content. Further, the indoor heat exchanger can be further provided with a coil temperature sensor A11 for detecting the temperature of the coil of the indoor heat exchanger and adjusting the operation parameters of the air conditioner by combining the temperature of the coil of the indoor heat exchanger and the obtained current dew point temperature, thereby achieving the purpose of double control of the temperature and the humidity of the air conditioner. The control deviceThe specific structure and operation of the device a5 can be found in the previous embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A temperature and humidity double control method of an air conditioner is characterized by comprising the following steps:
s1, acquiring the current indoor temperature in the refrigeration process of the air conditioner, and controlling the difference value △ T between the current indoor temperature and the target indoor temperature to be smaller than a first preset threshold value;
s2, acquiring the current indoor temperature and the current indoor humidity, and calculating the current indoor moisture content according to the current indoor temperature and the current indoor humidity;
s3, if the current indoor moisture content meets the preset dehumidification condition, the air conditioner carries out dehumidification treatment;
s4, if the current indoor moisture content meets the preset moisture preservation condition, the air conditioner carries out moisture preservation treatment;
the step S1 is preceded by:
when the air conditioner enters a refrigeration mode, calculating to obtain the moisture content in the target room according to the set target indoor temperature and the set target indoor humidity;
obtaining a preset dehumidification condition and a preset moisture preservation condition according to the target indoor moisture content;
the step S3 of performing the dehumidification by the air conditioner includes:
s301, acquiring the current indoor heat exchanger coil temperature and the dew point temperature corresponding to the current indoor humidity;
s302, reducing the air speed of the air conditioner to enable the temperature of the coil of the indoor heat exchanger to be smaller than or equal to the dew point temperature corresponding to the current indoor humidity;
s303, when the temperature of the coil of the current indoor heat exchanger is less than or equal to the dew point temperature corresponding to the current indoor humidity, keeping the current state of the air conditioner to operate for a third preset time, and then turning to S2;
the step S4 of performing the moisturizing treatment by the air conditioner includes:
s401, acquiring the current indoor heat exchanger coil temperature and the dew point temperature corresponding to the current indoor humidity;
s402, reducing the running frequency of a compressor of the air conditioner to enable the temperature of a coil of a current indoor heat exchanger to be larger than the dew point temperature corresponding to the current indoor humidity;
s403, when the temperature of the coil of the indoor heat exchanger is higher than the dew point temperature corresponding to the current indoor humidity, judging whether the current indoor temperature reaches the target indoor temperature;
s404, when the current indoor temperature reaches the target indoor temperature, keeping the current state of the air conditioner to operate, and turning to the step S2;
s405, when the current indoor temperature does not reach the target indoor temperature, controlling the air conditioner to refrigerate according to the current indoor temperature and the target indoor temperature, and after the air conditioner operates for a fifth preset time in a refrigerating mode, turning to the step S401.
2. The temperature-humidity dual control method according to claim 1, wherein the obtaining of the preset dehumidification condition and the preset humidity preservation condition according to the target indoor moisture content comprises:
according to the target indoor moisture content, determining that the preset dehumidification condition is that the current indoor moisture content is larger than the target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is smaller than or equal to the target indoor moisture content; or,
and calculating to obtain a first target indoor moisture content and a second target indoor moisture content according to the target indoor moisture content and a preset allowable floating value, determining that the preset dehumidification condition is that the current indoor moisture content is greater than the first target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is less than the second target indoor moisture content.
3. The utility model provides a double control device of temperature and humidity of air conditioner which characterized in that, controlling means includes:
the temperature difference calculation module is used for acquiring the current indoor temperature in the refrigeration process of the air conditioner and calculating the difference value △ T between the current indoor temperature and the target indoor temperature;
the indoor moisture content acquisition module is used for acquiring the current indoor temperature and the current indoor humidity and calculating the current indoor moisture content according to the current indoor temperature and the current indoor humidity;
the dehumidification control module is used for judging whether the current indoor moisture content meets the preset dehumidification condition or not, and controlling the air conditioner to perform dehumidification treatment if the current indoor moisture content meets the preset dehumidification condition;
the moisture preservation control module is used for judging whether the current indoor moisture content meets a preset moisture preservation condition or not, and controlling the air conditioner to carry out moisture preservation treatment if the current indoor moisture content meets the preset moisture preservation condition;
the control device also comprises a temperature control judging module; the indoor moisture content acquisition module is further configured to:
when the air conditioner enters a refrigeration mode, calculating to obtain the moisture content in the target room according to the set target indoor temperature and the set target indoor humidity;
the humidity control determination module is used for: acquiring a preset dehumidification condition and a preset moisture preservation condition according to the target indoor moisture content, and judging whether the air conditioner carries out dehumidification treatment or moisture preservation treatment according to the preset dehumidification condition and the preset moisture preservation condition;
the dehumidification control module is specifically used for:
the air speed of the air conditioner is reduced, so that the current temperature of the coil of the indoor heat exchanger is less than or equal to the dew point temperature corresponding to the current indoor humidity; when the current temperature of the coil of the indoor heat exchanger is less than or equal to the dew point temperature corresponding to the current indoor humidity, the current state of the air conditioner is kept running for a third preset time;
the moisturizing control module is specifically used for:
the method comprises the steps that the running frequency of a compressor of the air conditioner is reduced, so that the temperature of a coil pipe of a current indoor heat exchanger is higher than the dew point temperature corresponding to the current indoor humidity; when the current indoor heat exchanger coil temperature is higher than the dew point temperature corresponding to the current indoor humidity, judging whether the current indoor temperature reaches the target indoor temperature; and when the current indoor temperature reaches the target indoor temperature, keeping the current state of the air conditioner to operate.
4. The control apparatus of claim 3, wherein the humidity control determination module is specifically configured to:
according to the target indoor moisture content, determining that the preset dehumidification condition is that the current indoor moisture content is larger than the target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is smaller than or equal to the target indoor moisture content; or,
and calculating to obtain a first target indoor moisture content and a second target indoor moisture content according to the target indoor moisture content and a preset allowable floating value, determining that the preset dehumidification condition is that the current indoor moisture content is greater than the first target indoor moisture content, and determining that the preset moisture preservation condition is that the current indoor moisture content is less than the second target indoor moisture content.
5. An indoor unit of an air conditioner, wherein the indoor unit of the air conditioner is provided with an indoor temperature sensor and an indoor humidity sensor, the indoor temperature sensor is used for collecting indoor temperature in real time, the indoor humidity sensor is used for collecting indoor humidity in real time, the air conditioner further comprises a temperature and humidity double-control device of the air conditioner according to any one of claims 3 and 4, and the control device is used for combining current indoor temperature, target indoor temperature, current indoor humidity and target indoor humidity to control the operation of the air conditioner.
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| CN107621051B (en) * | 2017-09-04 | 2020-04-24 | 青岛海尔空调器有限总公司 | Method and device for double control of temperature and humidity of air conditioner |
| CN107490153B (en) * | 2017-09-12 | 2020-06-26 | 广东美的制冷设备有限公司 | Air conditioner and humidity control method and device thereof |
| CN107477803B (en) * | 2017-09-12 | 2019-10-29 | 广东美的制冷设备有限公司 | Air conditioner and its control method, device |
| CN107975922B (en) * | 2017-11-29 | 2020-05-01 | 广东美的制冷设备有限公司 | Air conditioner and control method and device thereof |
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