CN104879836A - Variable frequency dehumidifier control method and device and dehumidifier - Google Patents
Variable frequency dehumidifier control method and device and dehumidifier Download PDFInfo
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- CN104879836A CN104879836A CN201510200724.5A CN201510200724A CN104879836A CN 104879836 A CN104879836 A CN 104879836A CN 201510200724 A CN201510200724 A CN 201510200724A CN 104879836 A CN104879836 A CN 104879836A
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- dehumidifier
- temperature
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- predetermined threshold
- dew
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
Abstract
The invention discloses a variable frequency dehumidifier control method and device and a dehumidifier. The method includes: S1, controlling the dehumidifier to run in a preset state; S2, detecting environment dry-bulb temperature and relative humidity in the dehumidifier and temperature of an evaporator in the dehumidifier; S3, calculating dew-point temperature according to the environment dry-bulb temperature and relative humidity; S4, judging whether the dew-point temperature is higher than a first preset threshold or not; S5, if the dew-point temperature is higher than the first preset threshold, further judging whether the temperature of the evaporator is lower than or equal to a second preset threshold or not; S6, if the temperature of the evaporator is lower than or equal to the second preset threshold, lowering compressor frequency of the dehumidifier, increasing fan speed of the dehumidifier, and continuing to execute the step 2 after running for the preset time. By the method, the dehumidifier can delay frosting under the working condition that the dew-point temperature is higher than 0 DEG C, and dehumidification capacity under the working conditions is increased.
Description
Technical field
The present invention relates to dehumidifier technical field, particularly relate to a kind of control method of frequency conversion dehumidifier, device and there is the dehumidifier of this control device.
Background technology
At present, when running under the environment of dehumidifier low temperature in some, the temperature of the evaporimeter in dehumidifier can be very low, generally again frost changed into water by evaporimeter frosting one end time, obtain moisture removal with this.But, in the process controlling moisture removal, mainly contain two factors and moisture removal can be caused to reduce: (1), in Frost formation process, the frost of evaporator surface is more, and the heat exchange of air is poorer, is not easy frost to change into water, causes moisture removal to reduce; (2) defrost process apoplexy can make a frost part for solid sublimate directly in air, causes moisture removal to reduce.Therefore, the problem values how making dehumidifier can improve moisture removal under middle low temperature environment obtains the research of those skilled in the art.
Summary of the invention
Object of the present invention is intended to solve one of above-mentioned technical problem at least to a certain extent.
For this reason, first object of the present invention is the control method proposing a kind of frequency conversion dehumidifier.The method can make dehumidifier delay frosting under dew-point temperature is greater than the operating mode of 0 DEG C, improves the moisture removal under these operating modes, and phenomenon that polyvoltine totally do not cause freezing occurs to prevent evaporimeter frosting to cross.
Second object of the present invention is the control device proposing a kind of frequency conversion dehumidifier.
3rd object of the present invention is to propose a kind of dehumidifier.
To achieve these goals, the control method of the frequency conversion dehumidifier of first aspect present invention embodiment, comprising: S1, controls dehumidifier and runs with preset state; S2, detects the temperature of evaporimeter in environment dry-bulb temperature in described dehumidifier, relative humidity and described dehumidifier; S3, according to described environment dry-bulb temperature and described relative humidity calculation dew-point temperature; S4, judges whether described dew-point temperature is greater than the first predetermined threshold value; S5, if described dew-point temperature is greater than described first predetermined threshold value, then judges whether the temperature of described evaporimeter is less than or equal to the second predetermined threshold value further; And S6, if the temperature of described evaporimeter is less than or equal to described second predetermined threshold value, then reduce the compressor frequency of described dehumidifier, and increase the rotation speed of fan of described dehumidifier, and after operation Preset Time, continue to perform described step S2.
According to the control method of the frequency conversion dehumidifier of the embodiment of the present invention, can first control dehumidifier to run with preset state, environment dry-bulb temperature in dehumidifier can be detected afterwards, the temperature of evaporimeter in relative humidity and dehumidifier, and environmentally dry-bulb temperature and relative humidity calculation dew-point temperature, and judge whether dew-point temperature is greater than the first predetermined threshold value, if, then judge whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further, if, then reduce the compressor frequency of dehumidifier, and increase the rotation speed of fan of dehumidifier, dehumidifier can be made like this under dew-point temperature is greater than the operating mode of 0 DEG C to delay frosting, improve the moisture removal under these operating modes, and phenomenon that polyvoltine totally do not cause freezing occurs to prevent evaporimeter frosting to cross.
According to one embodiment of present invention, described control method also comprises: S7, if the temperature of described evaporimeter is greater than described second predetermined threshold value, then obtains the temperature difference between the temperature of described evaporimeter and described dew-point temperature; S8, controls described dehumidifier according to described temperature difference.
According to one embodiment of present invention, according to described temperature difference, described dehumidifier is controlled, specifically comprise: S81, judge whether described temperature difference is greater than the 3rd predetermined threshold value; S82, if described temperature difference is greater than described 3rd predetermined threshold value, then increases the compressor frequency of described dehumidifier, and after operation Preset Time, continues to perform described step S2; S83, if described temperature difference is less than or equal to described 3rd predetermined threshold value, then controls described dehumidifier and continues to keep described preset state to run.
According to one embodiment of present invention, described control method also comprises: S9, if described dew-point temperature is less than or equal to described first predetermined threshold value, then controls described dehumidifier and continues to keep described preset state to run.
Wherein, in one embodiment of the invention, described first predetermined threshold value, the second predetermined threshold value and the 3rd predetermined threshold value are 0.
To achieve these goals, the control device of the frequency conversion dehumidifier of second aspect present invention embodiment, comprising: the first control module, runs with preset state for controlling dehumidifier; Detection module, for detecting the temperature of evaporimeter in environment dry-bulb temperature in described dehumidifier, relative humidity and described dehumidifier; Computing module, for according to described environment dry-bulb temperature and described relative humidity calculation dew-point temperature; First judge module, for judging whether described dew-point temperature is greater than the first predetermined threshold value; Second judge module, for when described first judge module judges that described dew-point temperature is greater than described first predetermined threshold value, judges whether the temperature of described evaporimeter is less than or equal to the second predetermined threshold value further; And second control module, for when described second judge module judges that the temperature of described evaporimeter is less than or equal to described second predetermined threshold value, reduce the compressor frequency of described dehumidifier, and increase the rotation speed of fan of described dehumidifier.
According to the control device of the frequency conversion dehumidifier of the embodiment of the present invention, control dehumidifier by the first control module to run with preset state, detection module detects environment dry-bulb temperature in dehumidifier, the temperature of evaporimeter in relative humidity and dehumidifier, detection module is dry-bulb temperature and relative humidity calculation dew-point temperature environmentally, first judge module judges whether dew-point temperature is greater than the first predetermined threshold value, if, then the second judge module judges whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further, if, then the second control module reduces the compressor frequency of dehumidifier, and increase the rotation speed of fan of dehumidifier, dehumidifier can be made like this under dew-point temperature is greater than the operating mode of 0 DEG C to delay frosting, improve the moisture removal under these operating modes, and phenomenon that polyvoltine totally do not cause freezing occurs to prevent evaporimeter frosting to cross.
According to one embodiment of present invention, described control device also comprises: acquisition module, for when described second judge module judges that the temperature of described evaporimeter is greater than described second predetermined threshold value, obtain the temperature difference between the temperature of described evaporimeter and described dew-point temperature; Described second control module is also for controlling described dehumidifier according to described temperature difference.
According to one embodiment of present invention, described second control module specifically for: judge whether described temperature difference is greater than the 3rd predetermined threshold value; If described temperature difference is greater than described 3rd predetermined threshold value, then increase the compressor frequency of described dehumidifier; If described temperature difference is less than or equal to described 3rd predetermined threshold value, then controls described dehumidifier and continue to keep described preset state to run.
According to one embodiment of present invention, described second control module, also for when described first judge module judges that described dew-point temperature is less than or equal to described first predetermined threshold value, controls described dehumidifier and continues to keep described preset state to run.
Wherein, in one embodiment of the invention, described first predetermined threshold value, the second predetermined threshold value and the 3rd predetermined threshold value are 0.
To achieve these goals, the dehumidifier of third aspect present invention embodiment, comprising: the control device of the frequency conversion dehumidifier of second aspect present invention embodiment.
According to the dehumidifier of the embodiment of the present invention, control dehumidifier by the first control module in control device to run with preset state, detection module detects environment dry-bulb temperature in dehumidifier, the temperature of evaporimeter in relative humidity and dehumidifier, detection module is dry-bulb temperature and relative humidity calculation dew-point temperature environmentally, first judge module judges whether dew-point temperature is greater than the first predetermined threshold value, if, then the second judge module judges whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further, if, then the second control module reduces the compressor frequency of dehumidifier, and increase the rotation speed of fan of dehumidifier, dehumidifier can be made like this under dew-point temperature is greater than the operating mode of 0 DEG C to delay frosting, improve the moisture removal under these operating modes, and phenomenon that polyvoltine totally do not cause freezing occurs to prevent evaporimeter frosting to cross.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the flow chart of the control method of frequency conversion dehumidifier according to an embodiment of the invention;
Fig. 2 is the flow chart of the control method of frequency conversion dehumidifier in accordance with another embodiment of the present invention;
Fig. 3 is the structural representation of the control device of frequency conversion dehumidifier according to an embodiment of the invention;
Fig. 4 is the structural representation of the control device of frequency conversion dehumidifier in accordance with another embodiment of the present invention.
Reference numeral:
First control module 10, detection module 20, computing module 30, first judge module 40, second judge module 50, second control module 60 and acquisition module 70.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings describe the control method of the frequency conversion dehumidifier of the embodiment of the present invention, device and there is the dehumidifier of this control device.
Fig. 1 is the flow chart of the control method of frequency conversion dehumidifier according to an embodiment of the invention.It should be noted that, the control method of the frequency conversion dehumidifier of the embodiment of the present invention can be applicable on dehumidifier, and this dehumidifier is useful in certain and runs under low temperature environment.
As shown in Figure 1, the control method of this frequency conversion dehumidifier can comprise:
S101, controls dehumidifier and runs with preset state.
S102, detects the temperature of evaporimeter in environment dry-bulb temperature, relative humidity and dehumidifier in dehumidifier.
Particularly, the temperature T2 of evaporimeter in environment dry-bulb temperature t, relative humidity RH and dehumidifier in dehumidifier can be detected respectively by corresponding sensor.
S103, environmentally dry-bulb temperature and relative humidity calculation dew-point temperature.
Particularly, can the environment dry-bulb temperature t detected and relative humidity RH be substituted in the computing formula of dew-point temperature Td, to obtain dew-point temperature Td.More specifically, in an embodiment of the present invention, mug(unit of measure) Lars formula can be adopted, environment dry-bulb temperature t and relative humidity RH is substituted in the formula of mug(unit of measure) Lars to calculate dew-point temperature, and using this dew-point temperature as initial value, more namely obtain final dew-point temperature Td after carrying out repeating approaching.
It should be noted that, the computing formula of the dew-point temperature of the embodiment of the present invention is not limited to use mug(unit of measure) Lars formula, also calculate formula by other dew-point temperatures of the prior art, as long as namely environmentally dry-bulb temperature and relative humidity can obtain dew-point temperature, the computing formula of the present invention to dew-point temperature is not specifically limited.
S104, judges whether dew-point temperature is greater than the first predetermined threshold value.
Wherein, in an embodiment of the present invention, the first predetermined threshold value can be 0.
S105, if dew-point temperature is greater than the first predetermined threshold value, then judges whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further.
Wherein, in an embodiment of the present invention, the second predetermined threshold value can be 0.
S106, if the temperature of evaporimeter is less than or equal to the second predetermined threshold value, then reduces the compressor frequency of dehumidifier, and increases the rotation speed of fan of dehumidifier, and after operation Preset Time, continues to perform step S102.
Particularly, when dew-point temperature is greater than the first predetermined threshold value (as 0), and when the temperature of evaporimeter is less than or equal to the second predetermined threshold value (as 0), can compressor frequency be reduced, and increase rotation speed of fan.Such as, suppose that dehumidifier runs under low temperature environment in certain, by corresponding sensors sense environmental dry-bulb temperature 15 DEG C, relative humidity is 60%, the temperature of evaporimeter is-6.5 DEG C, and environmentally dry-bulb temperature and relative humidity calculation obtain dew-point temperature is 7.37 DEG C.Now dew-point temperature is greater than 0, and evaporator temperature is less than 0 (now evaporimeter meeting frosting), then reduce compressor frequency, and improve rotation speed of fan, the evaporator temperature of dehumidifier can be made like this to raise, and the frosting of retard evaporation device is to improve moisture removal.And after operation a period of time, continue to perform step S102, namely the temperature detecting evaporimeter in environment dry-bulb temperature, relative humidity and dehumidifier in dehumidifier is continued, and environmentally dry-bulb temperature, relative humidity calculation dew-point temperature, afterwards the size of dew-point temperature is judged, and according to judged result, dehumidifier is controlled accordingly.
According to the control method of the frequency conversion dehumidifier of the embodiment of the present invention, can first control dehumidifier to run with preset state, environment dry-bulb temperature in dehumidifier can be detected afterwards, the temperature of evaporimeter in relative humidity and dehumidifier, and environmentally dry-bulb temperature and relative humidity calculation dew-point temperature, and judge whether dew-point temperature is greater than the first predetermined threshold value, if, then judge whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further, if, then reduce the compressor frequency of dehumidifier, and increase the rotation speed of fan of dehumidifier, dehumidifier can be made like this under dew-point temperature is greater than the operating mode of 0 DEG C to delay frosting, improve the moisture removal under these operating modes, and phenomenon that polyvoltine totally do not cause freezing occurs to prevent evaporimeter frosting to cross.
Fig. 2 is the flow chart of the control method of frequency conversion dehumidifier in accordance with another embodiment of the present invention.It should be noted that, the control method of the frequency conversion dehumidifier of the embodiment of the present invention can be applicable on dehumidifier, and this dehumidifier is useful in certain and runs under low temperature environment.
In an embodiment of the present invention, when the temperature of the evaporimeter detected is higher than dew-point temperature, compressor frequency can be improved, to make evaporator temperature reduce, to improve moisture removal.Particularly, as described in Figure 2, the control method of this frequency conversion dehumidifier can comprise:
S201, controls dehumidifier and runs with preset state.
S202, detects the temperature of evaporimeter in environment dry-bulb temperature, relative humidity and dehumidifier in dehumidifier.
Particularly, the temperature T2 of evaporimeter in environment dry-bulb temperature t, relative humidity RH and dehumidifier in dehumidifier can be detected respectively by corresponding sensor.
S203, environmentally dry-bulb temperature and relative humidity calculation dew-point temperature.
Particularly, can the environment dry-bulb temperature t detected and relative humidity RH be substituted in the computing formula of dew-point temperature Td, to obtain dew-point temperature Td.More specifically, in an embodiment of the present invention, mug(unit of measure) Lars formula can be adopted, environment dry-bulb temperature t and relative humidity RH is substituted in the formula of mug(unit of measure) Lars to calculate dew-point temperature, and using this dew-point temperature as initial value, more namely obtain final dew-point temperature Td after carrying out repeating approaching.
It should be noted that, the computing formula of the dew-point temperature of the embodiment of the present invention is not limited to use mug(unit of measure) Lars formula, also calculate formula by other dew-point temperatures of the prior art, as long as namely environmentally dry-bulb temperature and relative humidity can obtain dew-point temperature, the computing formula of the present invention to dew-point temperature is not specifically limited.
S204, judges whether dew-point temperature is greater than the first predetermined threshold value.
Wherein, in an embodiment of the present invention, the first predetermined threshold value can be 0.
S205, if dew-point temperature is greater than the first predetermined threshold value, then judges whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further.Wherein, in an embodiment of the present invention, the second predetermined threshold value can be 0.
Further, in an embodiment of the present invention, as shown in Figure 2, the control method of this frequency conversion dehumidifier, also comprises: if dew-point temperature is less than or equal to the first predetermined threshold value, then control dehumidifier and continue to keep preset state to run, namely return step S201.Be appreciated that when dew-point temperature is less than or equal to the first predetermined threshold value (as 0), time, evaporator temperature must be made to be less than 0 degree, just can to have moisture removal, dehumidifier can be maintained in this case and keep preset state to run.
S206, if the temperature of evaporimeter is less than or equal to the second predetermined threshold value, then reduces the compressor frequency of dehumidifier, and increases the rotation speed of fan of dehumidifier, and after operation Preset Time, continues to perform step S202.
Particularly, when dew-point temperature is greater than the first predetermined threshold value (as 0), and the temperature of evaporimeter is when being less than or equal to the second predetermined threshold value (as 0), compressor frequency can be reduced, and increase rotation speed of fan, the evaporator temperature of dehumidifier can be made like this to raise, and the frosting of retard evaporation device is to improve moisture removal.And after operation a period of time, continue to perform step S202, namely the temperature detecting evaporimeter in environment dry-bulb temperature, relative humidity and dehumidifier in dehumidifier is continued, and environmentally dry-bulb temperature, relative humidity calculation dew-point temperature, afterwards the size of dew-point temperature is judged, and according to judged result, dehumidifier is controlled accordingly.
S207, if the temperature of evaporimeter is greater than the second predetermined threshold value, then obtains the temperature difference between the temperature of evaporimeter and dew-point temperature.
Particularly, when the temperature of evaporimeter is greater than the second predetermined threshold value (as 0), the temperature by evaporimeter deducts dew-point temperature to obtain temperature difference between the two.
S208, controls dehumidifier according to temperature difference.
Specifically, in an embodiment of the present invention, as shown in Figure 2, control (i.e. step S208) according to temperature difference to dehumidifier specifically to comprise: judge whether temperature difference is greater than the 3rd predetermined threshold value (S2081); If temperature difference is greater than the 3rd predetermined threshold value, then increase the compressor frequency of dehumidifier, and after operation Preset Time, continue to perform step S202 (S2082); If temperature difference is less than or equal to the 3rd predetermined threshold value, then controls dehumidifier and continue to keep preset state to run, namely return step S201.Wherein, in an embodiment of the present invention, the 3rd predetermined threshold value can be 0.
For example, supposing that dehumidifier runs under low temperature environment in certain, is 15 DEG C by corresponding sensors sense environmental dry-bulb temperature, and relative humidity is 60%, the temperature of evaporimeter is-6.5 DEG C, and environmentally dry-bulb temperature and relative humidity calculation obtain dew-point temperature is 7.37 DEG C.Now dew-point temperature is greater than 0, and evaporator temperature is less than 0 (now evaporimeter meeting frosting), then reduce compressor frequency, and improve rotation speed of fan, evaporator temperature can be made like this to raise, delay its frosting.After running a period of time, detect that environment dry-bulb temperature is 16 DEG C, relative humidity is 50%, and the temperature of evaporimeter is 1.8 DEG C, and now calculating dew-point temperature is 5.69 DEG C.Now dew-point temperature is greater than 0, and evaporator temperature is between 0 and dew-point temperature, can not frosting and can by the hydrogenesis in air, and now dehumidifier does not adjust, and continues to keep standing state to run.
According to the control method of the frequency conversion dehumidifier of the embodiment of the present invention, when the temperature of the evaporimeter detected is higher than dew-point temperature, can compressor frequency be improved, to make evaporator temperature reduce, improve moisture removal.
In order to realize above-described embodiment, the invention allows for a kind of control device of frequency conversion dehumidifier.
Fig. 3 is the structural representation of the control device of frequency conversion dehumidifier according to an embodiment of the invention.It should be noted that, the control device of the frequency conversion dehumidifier of the embodiment of the present invention can be applicable on dehumidifier, and this dehumidifier is useful in certain and runs under low temperature environment.
As shown in Figure 3, the control device of this frequency conversion dehumidifier can comprise: the first control module 10, detection module 20, computing module 30, first judge module 40, second judge module 50 and the second control module 60.
Particularly, the first control module 10 can be used for control dehumidifier run with preset state.
Detection module 20 can be used for the temperature detecting evaporimeter in environment dry-bulb temperature, relative humidity and dehumidifier in dehumidifier.More specifically, detection module 20 can detect the temperature T2 of evaporimeter in environment dry-bulb temperature t, relative humidity RH and dehumidifier in dehumidifier respectively by corresponding sensor.
Computing module 30 can be used for environmentally dry-bulb temperature and relative humidity calculation dew-point temperature.More specifically, the environment dry-bulb temperature t detected and relative humidity RH can substitute in the computing formula of dew-point temperature Td, to obtain dew-point temperature Td by computing module 30.More specifically, in an embodiment of the present invention, mug(unit of measure) Lars formula can be adopted, environment dry-bulb temperature t and relative humidity RH is substituted in the formula of mug(unit of measure) Lars to calculate dew-point temperature, and using this dew-point temperature as initial value, more namely obtain final dew-point temperature Td after carrying out repeating approaching.
It should be noted that, the computing formula of the dew-point temperature of the embodiment of the present invention is not limited to use mug(unit of measure) Lars formula, also calculate formula by other dew-point temperatures of the prior art, as long as namely environmentally dry-bulb temperature and relative humidity can obtain dew-point temperature, the computing formula of the present invention to dew-point temperature is not specifically limited.
First judge module 40 can be used for judging whether dew-point temperature is greater than the first predetermined threshold value.Wherein, in an embodiment of the present invention, the first predetermined threshold value can be 0.
Second judge module 50 is used in the first judge module 40 when judging that dew-point temperature is greater than the first predetermined threshold value, judges whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further.Wherein, in an embodiment of the present invention, the second predetermined threshold value can be 0.
Second control module 60 is used in the second judge module 50 when judging that the temperature of evaporimeter is less than or equal to the second predetermined threshold value, reduces the compressor frequency of dehumidifier, and increases the rotation speed of fan of dehumidifier.More specifically, when dew-point temperature is greater than the first predetermined threshold value (as 0), and the temperature of evaporimeter is when being less than or equal to the second predetermined threshold value (as 0), second control module 60 can reduce compressor frequency, and increase rotation speed of fan, the evaporator temperature of dehumidifier can be made like this to raise, and the frosting of retard evaporation device is to improve moisture removal.And after operation a period of time, detection module 20 can continue the temperature detecting evaporimeter in environment dry-bulb temperature, relative humidity and dehumidifier in dehumidifier, computing module 30 is dry-bulb temperature, relative humidity calculation dew-point temperature environmentally, the size of the first judge module 40 pairs of dew-point temperatures judges, the second control module 60 controls dehumidifier accordingly according to judged result.
Further, in one embodiment of the invention, as shown in Figure 4, the control device of this frequency conversion dehumidifier also can comprise: acquisition module 70.Acquisition module 70 is used in the second judge module 50 when judging that the temperature of evaporimeter is greater than the second predetermined threshold value, obtains the temperature difference between the temperature of evaporimeter and dew-point temperature.In an embodiment of the present invention, the second control module 60 also can be used for controlling dehumidifier according to temperature difference.Specifically, in an embodiment of the present invention, the second control module 60 can be the specific implementation process that dehumidifier controls according to temperature difference: judge whether temperature difference is greater than the 3rd predetermined threshold value; If temperature difference is greater than the 3rd predetermined threshold value, then increase the compressor frequency of dehumidifier; If temperature difference is less than or equal to the 3rd predetermined threshold value, then controls dehumidifier and continue to keep preset state to run.Wherein, in an embodiment of the present invention, the 3rd predetermined threshold value can be 0.Thus, when the temperature of the evaporimeter detected is higher than dew-point temperature, can compressor frequency be improved, to make evaporator temperature reduce, improve moisture removal.
For example, suppose that dehumidifier runs under low temperature environment in certain, detection module 20 is 15 DEG C by corresponding sensors sense environmental dry-bulb temperature, relative humidity is 60%, the temperature of evaporimeter is-6.5 DEG C, and environmentally dry-bulb temperature and relative humidity calculation obtain dew-point temperature to computing module 30 is 7.37 DEG C.Now dew-point temperature is greater than 0, and evaporator temperature is less than 0 (now evaporimeter meeting frosting), then the second control module 60 reduces compressor frequency, and improves rotation speed of fan, evaporator temperature can be made like this to raise, delay its frosting.After running a period of time, detection module 20 detects that environment dry-bulb temperature is 16 DEG C, and relative humidity is 50%, and the temperature of evaporimeter is 1.8 DEG C, and now computing module 30 calculates dew-point temperature is 5.69 DEG C.Now dew-point temperature is greater than 0, and evaporator temperature is between 0 and dew-point temperature, can not frosting and can by the hydrogenesis in air, and now the second control module 60 pairs of dehumidifiers do not adjust, and continue to keep standing state to run.
Further, in one embodiment of the invention, the second control module 60 is also used in the first judge module 40 when judging that dew-point temperature is less than or equal to the first predetermined threshold value, controls dehumidifier and continues to keep preset state to run.Be appreciated that when dew-point temperature is less than or equal to the first predetermined threshold value (as 0), time, evaporator temperature must be made to be less than 0 degree, just can to have moisture removal, dehumidifier can be maintained in this case and keep preset state to run.
According to the control device of the frequency conversion dehumidifier of the embodiment of the present invention, control dehumidifier by the first control module to run with preset state, detection module detects environment dry-bulb temperature in dehumidifier, the temperature of evaporimeter in relative humidity and dehumidifier, detection module is dry-bulb temperature and relative humidity calculation dew-point temperature environmentally, first judge module judges whether dew-point temperature is greater than the first predetermined threshold value, if, then the second judge module judges whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further, if, then the second control module reduces the compressor frequency of dehumidifier, and increase the rotation speed of fan of dehumidifier, dehumidifier can be made like this under dew-point temperature is greater than the operating mode of 0 DEG C to delay frosting, improve the moisture removal under these operating modes, and phenomenon that polyvoltine totally do not cause freezing occurs to prevent evaporimeter frosting to cross.
In order to realize above-described embodiment, the invention allows for a kind of dehumidifier, comprising the control device of the frequency conversion dehumidifier described in any one embodiment above-mentioned.It should be noted that, the dehumidifier of the embodiment of the present invention is useful in certain and runs under low temperature environment.
According to the dehumidifier of the embodiment of the present invention, control dehumidifier by the first control module in control device to run with preset state, detection module detects environment dry-bulb temperature in dehumidifier, the temperature of evaporimeter in relative humidity and dehumidifier, detection module is dry-bulb temperature and relative humidity calculation dew-point temperature environmentally, first judge module judges whether dew-point temperature is greater than the first predetermined threshold value, if, then the second judge module judges whether the temperature of evaporimeter is less than or equal to the second predetermined threshold value further, if, then the second control module reduces the compressor frequency of dehumidifier, and increase the rotation speed of fan of dehumidifier, dehumidifier can be made like this under dew-point temperature is greater than the operating mode of 0 DEG C to delay frosting, improve the moisture removal under these operating modes, and phenomenon that polyvoltine totally do not cause freezing occurs to prevent evaporimeter frosting to cross.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this description, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only storage (ROM), erasablely edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only storage, disk or CD etc.Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (11)
1. a control method for frequency conversion dehumidifier, is characterized in that, comprises the following steps:
S1, controls dehumidifier and runs with preset state;
S2, detects the temperature of evaporimeter in environment dry-bulb temperature in described dehumidifier, relative humidity and described dehumidifier;
S3, according to described environment dry-bulb temperature and described relative humidity calculation dew-point temperature;
S4, judges whether described dew-point temperature is greater than the first predetermined threshold value;
S5, if described dew-point temperature is greater than described first predetermined threshold value, then judges whether the temperature of described evaporimeter is less than or equal to the second predetermined threshold value further; And
S6, if the temperature of described evaporimeter is less than or equal to described second predetermined threshold value, then reduces the compressor frequency of described dehumidifier, and increases the rotation speed of fan of described dehumidifier, and after operation Preset Time, continues to perform described step S2.
2. the control method of frequency conversion dehumidifier as claimed in claim 1, is characterized in that, also comprise:
S7, if the temperature of described evaporimeter is greater than described second predetermined threshold value, then obtains the temperature difference between the temperature of described evaporimeter and described dew-point temperature;
S8, controls described dehumidifier according to described temperature difference.
3. the control method of frequency conversion dehumidifier as claimed in claim 2, is characterized in that, control, specifically comprise according to described temperature difference to described dehumidifier:
S81, judges whether described temperature difference is greater than the 3rd predetermined threshold value;
S82, if described temperature difference is greater than described 3rd predetermined threshold value, then increases the compressor frequency of described dehumidifier, and after operation Preset Time, continues to perform described step S2;
S83, if described temperature difference is less than or equal to described 3rd predetermined threshold value, then controls described dehumidifier and continues to keep described preset state to run.
4. the control method of frequency conversion dehumidifier as claimed in claim 1, is characterized in that, also comprise:
S9, if described dew-point temperature is less than or equal to described first predetermined threshold value, then controls described dehumidifier and continues to keep described preset state to run.
5. the control method of frequency conversion dehumidifier as claimed in claim 3, it is characterized in that, wherein, described first predetermined threshold value, the second predetermined threshold value and the 3rd predetermined threshold value are 0.
6. a control device for frequency conversion dehumidifier, is characterized in that, comprising:
First control module, runs with preset state for controlling dehumidifier;
Detection module, for detecting the temperature of evaporimeter in environment dry-bulb temperature in described dehumidifier, relative humidity and described dehumidifier;
Computing module, for according to described environment dry-bulb temperature and described relative humidity calculation dew-point temperature;
First judge module, for judging whether described dew-point temperature is greater than the first predetermined threshold value;
Second judge module, for when described first judge module judges that described dew-point temperature is greater than described first predetermined threshold value, judges whether the temperature of described evaporimeter is less than or equal to the second predetermined threshold value further; And
Second control module, for when described second judge module judges that the temperature of described evaporimeter is less than or equal to described second predetermined threshold value, reduces the compressor frequency of described dehumidifier, and increases the rotation speed of fan of described dehumidifier.
7. the control device of frequency conversion dehumidifier as claimed in claim 6, is characterized in that, also comprise:
Acquisition module, for when described second judge module judges that the temperature of described evaporimeter is greater than described second predetermined threshold value, obtains the temperature difference between the temperature of described evaporimeter and described dew-point temperature;
Described second control module is also for controlling described dehumidifier according to described temperature difference.
8. the control device of frequency conversion dehumidifier as claimed in claim 7, is characterized in that, described second control module specifically for:
Judge whether described temperature difference is greater than the 3rd predetermined threshold value;
If described temperature difference is greater than described 3rd predetermined threshold value, then increase the compressor frequency of described dehumidifier;
If described temperature difference is less than or equal to described 3rd predetermined threshold value, then controls described dehumidifier and continue to keep described preset state to run.
9. the control device of frequency conversion dehumidifier as claimed in claim 6, it is characterized in that, described second control module, also for when described first judge module judges that described dew-point temperature is less than or equal to described first predetermined threshold value, controls described dehumidifier and continues to keep described preset state to run.
10. the control device of frequency conversion dehumidifier as claimed in claim 8, it is characterized in that, wherein, described first predetermined threshold value, the second predetermined threshold value and the 3rd predetermined threshold value are 0.
11. 1 kinds of dehumidifiers, is characterized in that, comprising: the control device of the frequency conversion dehumidifier according to any one of claim 6-10.
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