CN102914030B - Thermostat dehumidification control method of air conditioner - Google Patents
Thermostat dehumidification control method of air conditioner Download PDFInfo
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Abstract
The invention discloses a thermostat dehumidification control method of an air conditioner. The air conditioner comprises a compressor, a condenser, an electronic expansion valve, an evaporator, a four-way reversing valve, an outdoor fan, an indoor fan, an indoor temperature sensor, an indoor humidity sensor and an outdoor temperature sensor; and the evaporator is divided into a heating section and a dehumidifying section by a dehumidifying electromagnetic valve. The dehumidifying operating mode of the air conditioner is divided into a cold room dehumidification control mode and a thermostat dehumidification control mode according to the difference between the temperature detected by the indoor temperature sensor and the temperature set by a remote controller. When the air conditioner is in the thermostat dehumidification control mode, the thermostat dehumidification control mode is further subdivided into three control areas according to the relative humidity detected by the indoor temperature sensor, thus the purposes of reducing the indoor temperature and keeping the temperature constant are achieved by controlling the frequency of the compressor, the rotation speed of the outdoor fan and various valves, and a conformable indoor environment is provided for the user.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of during dehumidifying holding chamber environment temperature-resistant and make room air reach the constant temperature dehumidification control method of the air-conditioner of comfort humidity.
Background technology
The dehumidification function of existing air-conditioner is substantially identical with the principle of normal refrigeration mode, it runs acquisition moisture removal by indoor fan with gentle breeze, but, due to the heat of room air can be taken away while dehumidifying, room temperature is declined, therefore, discomfort can be brought to user when room temperature is lower.
For reaching the object that dehumidifying is not lowered the temperature, more existing air-conditioner adopts the control mode of opening electrical heating combination refrigerating capacity during dehumidifying, the change of environmentally temperature can adjust unlatching or the closedown of auxiliary electrical heater in time, while dehumidifying, control indoor environment temperature be in a constant level.
Although existing this Dehumidification controlling mode can not increase production cost, but because the electrical efficiency of auxiliary electrical heater is very low, make energy efficiency of air conditioner than low, consume energy high, and this mode that indoor environment temperature can be made to fluctuate is very large, real constant temperature dehumidification effect can not be reached.
Summary of the invention
Main purpose of the present invention is the constant temperature dehumidification control method providing a kind of air-conditioner, while air-conditioner dehumidifying, keep indoor environment temperature to be in constant level, and user is in the middle of the suitable a home from home of humiture all the time.
In order to achieve the above object, the present invention proposes a kind of constant temperature dehumidification control method of air-conditioner, this air-conditioner comprises compressor, condenser, electric expansion valve, evaporimeter, four-way change-over valve, outdoor fan and indoor fan, wherein the dehumidified magnetic valve of evaporimeter is divided into bringing-up section and dehumidifying section, this air-conditioner also comprises the temperature sensor and humidity sensor that are placed in indoor, and be placed in outdoor temperature sensor, the method comprises the following steps:
S1, the temperature TS that the temperature TA detected according to the temperature sensor being placed in indoor and remote controller set compares, and obtains Wen Du Cha ⊿ T=TA-TS;
S2, according to step S1 get Dao ⊿ T air-conditioner dehumidified operation mode be divided into cold-room Dehumidification controlling pattern and constant temperature dehumidification control model: as ⊿ T>2 DEG C be cold-room Dehumidification controlling pattern ， Dang ⊿ T≤2 DEG C time be constant temperature dehumidification control model;
S3, when air-conditioner is in constant temperature dehumidification control model, constant temperature dehumidification pattern is subdivided into three control areas by the relative humidity ψ detected according to the humidity sensor being placed in indoor further:
As ψ >70%, it is A control area;
When 40< ψ≤70%, it is B control area;
When ψ≤40%, it is C control area.
Preferably, when air-conditioner is in cold-room Dehumidification controlling pattern, the power-off of dehumidifying magnetic valve, is in full-gear, and the frequency of compressor is run according to dehumidifying peak frequency, and the rotating speed of outdoor fan and the aperture of electric expansion valve control according to cooling operation mode.
Preferably, when air-conditioner is in constant temperature dehumidification control model, dehumidifying magnetic valve powers on, be in throttle, electric expansion valve standard-sized sheet, the frequency of compressor is according to each micro-stepping control Region control, and the outdoor temperature TO that the rotating speed of outdoor fan detects according to the temperature sensor being placed in outdoor controls.
Preferably, the speed setting of described compressor is fourth gear frequency, is respectively F1, F2, F3, F4, and each frequency increases progressively successively.
Preferably, when air-conditioner is in constant temperature dehumidification control model, the frequency of compressor according to the control mode in each micro-stepping control region is:
When air-conditioner is in A control area, compressor adopts dehumidifying maximum frequency of operation F4;
When air-conditioner is in B control area, calculates ⊿ T control according to current detection, wherein during: ⊿ T>2 DEG C, compressor adopts dehumidifying maximum frequency of operation F4; During 1 DEG C of < ⊿ T≤2 DEG C, compressor adopts running frequency F3; During 0 DEG C of < ⊿ T≤1 DEG C, compressor adopts running frequency F2; During-2 DEG C of < ⊿ T≤0 DEG C, compressor adopts running frequency F1; During ⊿ T≤-2 DEG C, compressor shuts down;
When air-conditioner is in C control area, compressor shuts down;
When compressor shuts down, outdoor fan also shuts down.
Preferably, the motor of described outdoor fan of air conditioner is DC continuous speed regulation motor, when air-conditioner is in constant temperature dehumidification control model, is distributed by the heat dissipation capacity regulating the rotating speed of outdoor fan to control condenser and evaporimeter bringing-up section.
Preferably, the speed setting of described outdoor fan is fourth gear, is respectively N1, N2, N3, N4, and each shelves rotating speed increases progressively successively.
Preferably, when air-conditioner is in constant temperature dehumidification control model, the mode that the rotating speed of outdoor fan carries out controlling according to the outdoor temperature TO that the temperature sensor being placed in outdoor detects is:
As outdoor temperature TO>33 DEG C, outdoor fan rotating speed is N4;
When outdoor temperature 27 DEG C of < TO≤33 DEG C, outdoor fan rotating speed is N3;
When outdoor temperature 20 DEG C of < TO≤27 DEG C, outdoor fan rotating speed is N2;
When outdoor temperature 12 DEG C of < TO≤20 DEG C, outdoor fan rotating speed is N1;
When outdoor temperature TO≤12 DEG C, outdoor fan shuts down.
The constant temperature dehumidification control method of a kind of air-conditioner that the present invention proposes, when air-conditioner dehumidifies, the dehumidifying operation mode of air-conditioner is divided into cold-room Dehumidification controlling pattern and constant temperature dehumidification control model by the temperature difference between the temperature that the temperature detected according to the temperature sensor of indoor and remote controller set, when air-conditioner is in constant temperature dehumidification control model, constant temperature dehumidification pattern is subdivided into three control areas by the relative humidity detected according to the humidity sensor being placed in indoor further, simultaneously, by to compressor frequency, the control of outdoor fan rotating speed and various valve, reach and reduce indoor humidity and keep temperature to be in the object of constant level, thus provide comfortable indoor environment for user.
Accompanying drawing explanation
Fig. 1 is the system block diagram that constant temperature dehumidification of the present invention controls air-conditioner;
Fig. 2 is the schematic flow sheet of the constant temperature dehumidification control method preferred embodiment of air-conditioner of the present invention.
In order to make technical scheme of the present invention clearly, understand, be described in further detail below in conjunction with accompanying drawing.
Detailed description of the invention
With reference to the system block diagram that Fig. 1 and Fig. 2, Fig. 1 are constant temperature dehumidification of the present invention control air-conditioners; Fig. 2 is the schematic flow sheet of the constant temperature dehumidification control method preferred embodiment of air-conditioner of the present invention.
As shown in Figures 1 and 2, the constant temperature dehumidification control method of a kind of air-conditioner that the present embodiment proposes, this air-conditioner comprises compressor 1, condenser 2, electric expansion valve 3, evaporimeter 4, four-way change-over valve 5, outdoor fan 6 and indoor fan 7, wherein the dehumidified magnetic valve 8 of evaporimeter 4 is divided into bringing-up section 410 and dehumidifying section 420, this air-conditioner also comprises the temperature sensor and humidity sensor that are placed in indoor, and be placed in outdoor temperature sensor, the method comprises the following steps:
S1, the temperature TS that the temperature TA detected according to the temperature sensor being placed in indoor and remote controller set compares, and obtains Wen Du Cha ⊿ T=TA-TS;
S2, according to step S1 get Dao ⊿ T air-conditioner dehumidified operation mode be divided into cold-room Dehumidification controlling pattern and constant temperature dehumidification control model: as ⊿ T>2 DEG C be cold-room Dehumidification controlling pattern ， Dang ⊿ T≤2 DEG C time be constant temperature dehumidification control model;
S3, when air-conditioner is in constant temperature dehumidification control model, constant temperature dehumidification pattern is subdivided into three control areas by the relative humidity ψ detected according to the humidity sensor being placed in indoor further:
As ψ >70%, it is A control area;
When 40< ψ≤70%, it is B control area;
When ψ≤40%, it is C control area.
Particularly, when air-conditioner is in cold-room Dehumidification controlling pattern, indoor dehumidification magnetic valve 8 power-off, be in full-gear, because this valve port footpath is larger, therefore there is not throttle effect, now the bringing-up section 410 of evaporimeter 4 all uses as evaporation dehumidification function with dehumidifying section 420, after refrigerant liquid flows through outdoor electrical expansion valve 3, reducing pressure by regulating flow becomes low-temp low-pressure and contains the gas-liquid mixture of certain proportion gas, enter evaporimeter 4 and flow through bringing-up section 410 successively and dehumidifying section 420 carries out evaporation endothermic, the temperature and humidity of room air is reduced simultaneously.For reaching good cool-down dehumidification effect, the frequency of compressor 1 is run according to dehumidifying peak frequency, and indoor fan 7 is fixed as the running of low wind; The rotating speed of outdoor fan 6 and the aperture of electric expansion valve 3 control according to common cooling operation mode.
When air-conditioner is in constant temperature dehumidification control model, indoor dehumidification magnetic valve 8 powers on, and is in the throttle of certain aperture, there is throttle effect, electric expansion valve 3 standard-sized sheet, now, air-conditioner adjusts the leaving air temp of indoor evaporator 4 by the heat dissipation capacity adjusting outdoor condenser 2.Meanwhile, the frequency of compressor 1 is according to each micro-stepping control Region control, and the outdoor temperature TO that the rotating speed of outdoor fan 6 detects according to the temperature sensor being placed in outdoor controls.
Particularly, the condensing capacity of condenser 2 can be regulated by the rotating speed controlling outdoor fan 6, make high pressure high temperature vapor partial condensation condenser 2 of discharging from compressor 1, because the aperture controlling electric expansion valve 3 is standard-sized sheet, the bringing-up section 410 that cold-producing medium is easy to enter indoor evaporator 4 continues condensation, and part room air is crossed bringing-up section 410 at the flows by action of indoor fan 7 and heated.Throttle effect is there is through dehumidifying magnetic valve 8 in cold-producing medium after bringing-up section 410 is condensed into subcooled liquid, enter dehumidifying section 420 evaporation endothermic of indoor evaporator 4, another part room air is crossed dehumidifying section 420 at the flows by action of indoor fan 7 and is cooled, and humidity reduces simultaneously.The blowout after the mixing of the air outlet of indoor set place of air-conditioner of two parts air, makes indoor environment temperature remain constant, humidity is reduced to comfort standard simultaneously.
By the heat exchange area ratio of the bringing-up section 410 and dehumidifying section 420 that rationally arrange evaporimeter 4, coordinate the frequency of compressor 1 and the rotating speed of outdoor fan 66 to control, the object of constant temperature dehumidification can be realized.
The present embodiment compressor in air conditioner 1 is rotating speed controllable type, corresponding constant temperature dehumidification control model is set with a series of running frequency, as a kind of preferred embodiment of simplification, can be fourth gear frequency by the speed setting of compressor 1, be respectively F1, F2, F3, F4, each frequency increases progressively successively, such as can set each frequency is: 25Hz, 30 Hz, 35 Hz, 40 Hz, frequency is larger, and moisture removal is larger, and indoor blowout temperature is then lower.
When air-conditioner is in constant temperature dehumidification control model, divides three control areas to control compressor 1 frequency according to the relative humidity ψ that the humidity sensor being placed in indoor detects, be specially:
When air-conditioner is in A control area, relative humidity is bigger than normal, and compressor 1 adopts dehumidifying maximum frequency of operation F4, as 40Hz;
When air-conditioner is in B control area, indoor relative humidity has been in comfort standard, the Wen Cha ⊿ T(⊿ T=TA-TS of the temperature TS that the indoor temperature TA detected according to the temperature sensor being placed in indoor this moment and remote controller set) indoor temperature is controlled, as shown in table 1 below:
| ⊿T（℃） | Running frequency |
| ⊿T>2 | F4 |
| 1<⊿T≤2 | F3 |
| 0<⊿T≤1 | F2 |
| -2<⊿T≤0 | F1 |
| ⊿T≤-2 | Shut down |
Table 1
Wherein during: ⊿ T>2 DEG C, compressor 1 adopts dehumidifying maximum frequency of operation F4; During 1 DEG C of < ⊿ T≤2 DEG C, compressor 1 adopts running frequency F3; During 0 DEG C of < ⊿ T≤1 DEG C, compressor 1 adopts running frequency F2; During-2 DEG C of < ⊿ T≤0 DEG C, compressor 1 adopts running frequency F1; During ⊿ T≤-2 DEG C, compressor 1 shuts down.
When air-conditioner is in C control area, indoor relative humidity is on the low side, and do not need dehumidifying, compressor 1 shuts down.
When compressor 1 shuts down, the not outside discharges heat of air-conditioner, outdoor fan 6 also shuts down.
In addition, the motor of the present embodiment outdoor fan of air conditioner 6 is DC continuous speed regulation motor, when air-conditioner is in constant temperature dehumidification control model, controls condenser 2 distribute with the heat dissipation capacity of evaporimeter 4 bringing-up section 410 by regulating the rotating speed of outdoor fan 6.Outdoor fan 6 rotating speed is high, then condenser 2 heat dissipation capacity is large, and evaporimeter 4 bringing-up section 410 heat dissipation capacity is little; Otherwise then condenser 2 heat dissipation capacity is little, evaporimeter 4 bringing-up section 410 heat dissipation capacity is large.
The speed setting of outdoor fan 6 is specifically fourth gear by the present embodiment, be respectively N1, N2, N3, N4, each shelves rotating speed increases progressively successively, and namely corresponding shelves are Ultra-Low Speed, low speed, middling speed and high speed respectively, and such as setting each rotating speed is: 400,550,700,850 revs/min.
When air-conditioner is in constant temperature dehumidification control model, the outdoor temperature TO that the rotating speed of outdoor fan 6 detects according to the temperature sensor being placed in outdoor controls, and its concrete control mode is as shown in table 2 below:
Table 2
That is, as outdoor temperature TO>33 DEG C, outdoor fan 6 rotating speed is N4;
When outdoor temperature 27 DEG C of < TO≤33 DEG C, outdoor fan 6 rotating speed is N3;
When outdoor temperature 20 DEG C of < TO≤27 DEG C, outdoor fan 6 rotating speed is N2;
When outdoor temperature 12 DEG C of < TO≤20 DEG C, outdoor fan 6 rotating speed is N1;
When outdoor temperature TO≤12 DEG C, outdoor fan 6 shuts down.
The present embodiment air-conditioner is by detection of dynamic indoor temperature and humidity and switch corresponding operational mode according to control logic, and ensureing that indoor humidity is in comfort standard and holding temperature is constant, is the indoor environment of user's Creating Comfort.
Constant temperature dehumidification control method of the present invention passes through such scheme, when air-conditioner dehumidifies, the dehumidifying operation mode of air-conditioner is divided into cold-room Dehumidification controlling pattern and constant temperature dehumidification control model by the temperature difference between the temperature that the temperature detected according to the temperature sensor of indoor and remote controller set, when air-conditioner is in constant temperature dehumidification control model, constant temperature dehumidification pattern is subdivided into three control areas by the relative humidity detected according to the humidity sensor being placed in indoor further, simultaneously, by to compressor 1 frequency, the control of outdoor fan 6 rotating speed and various valve, reach and reduce indoor humidity and keep temperature to be in the object of constant level, thus provide comfortable indoor environment for user.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (7)
1. the constant temperature dehumidification control method of an air-conditioner, this air-conditioner comprises compressor, condenser, electric expansion valve, evaporimeter, four-way change-over valve, outdoor fan and indoor fan, wherein the dehumidified magnetic valve of evaporimeter is divided into bringing-up section and dehumidifying section, this air-conditioner also comprises the temperature sensor and humidity sensor that are placed in indoor, and be placed in outdoor temperature sensor, it is characterized in that, the method comprises the following steps:
S1, the temperature TS that the temperature TA detected according to the temperature sensor being placed in indoor and remote controller set compares, and obtains Wen Du Cha ⊿ T=TA-TS;
S2, according to step S1 get Dao ⊿ T air-conditioner dehumidified operation mode be divided into cold-room Dehumidification controlling pattern and constant temperature dehumidification control model: as ⊿ T>2 DEG C be cold-room Dehumidification controlling pattern ， Dang ⊿ T≤2 DEG C time be constant temperature dehumidification control model;
S3, when air-conditioner is in constant temperature dehumidification control model, constant temperature dehumidification pattern is subdivided into three control areas by the relative humidity ψ detected according to the humidity sensor being placed in indoor further:
As ψ >70%, it is A control area;
When 40%< ψ≤70%, it is B control area;
When ψ≤40%, it is C control area;
When air-conditioner is in constant temperature dehumidification control model, dehumidifying magnetic valve powers on, and is in throttle, electric expansion valve standard-sized sheet, the frequency of compressor is according to each micro-stepping control Region control, and the outdoor temperature TO that the rotating speed of outdoor fan detects according to the temperature sensor being placed in outdoor controls.
2. the constant temperature dehumidification control method of air-conditioner according to claim 1, it is characterized in that, when air-conditioner is in cold-room Dehumidification controlling pattern, the power-off of dehumidifying magnetic valve, be in full-gear, the frequency of compressor is run according to dehumidifying peak frequency, and the rotating speed of outdoor fan and the aperture of electric expansion valve control according to cooling operation mode.
3. the constant temperature dehumidification control method of air-conditioner according to claim 1, is characterized in that, the frequency setting of described compressor is fourth gear frequency, is respectively F1, F2, F3, F4, and each frequency increases progressively successively.
4. the constant temperature dehumidification control method of air-conditioner according to claim 3, is characterized in that, when air-conditioner is in constant temperature dehumidification control model, the frequency of compressor according to the control mode in each micro-stepping control region is:
When air-conditioner is in A control area, compressor adopts dehumidifying maximum frequency of operation F4;
When air-conditioner is in B control area, calculates ⊿ T control according to current detection, wherein during: ⊿ T>2 DEG C, compressor adopts dehumidifying maximum frequency of operation F4; During 1 DEG C of < ⊿ T≤2 DEG C, compressor adopts running frequency F3; During 0 DEG C of < ⊿ T≤1 DEG C, compressor adopts running frequency F2; During-2 DEG C of < ⊿ T≤0 DEG C, compressor adopts running frequency F1; During ⊿ T≤-2 DEG C, compressor shuts down;
When air-conditioner is in C control area, compressor shuts down;
When compressor shuts down, outdoor fan also shuts down.
5. the constant temperature dehumidification control method of the air-conditioner according to any one of claim 1-4, it is characterized in that, the motor of described outdoor fan of air conditioner is DC continuous speed regulation motor, when air-conditioner is in constant temperature dehumidification control model, distributed by the heat dissipation capacity regulating the rotating speed of outdoor fan to control condenser and evaporimeter bringing-up section.
6. the constant temperature dehumidification control method of air-conditioner according to claim 5, is characterized in that, the speed setting of described outdoor fan is fourth gear, is respectively N1, N2, N3, N4, and each shelves rotating speed increases progressively successively.
7. the constant temperature dehumidification control method of air-conditioner according to claim 6, it is characterized in that, when air-conditioner is in constant temperature dehumidification control model, the mode that the rotating speed of outdoor fan carries out controlling according to the outdoor temperature TO that the temperature sensor being placed in outdoor detects is:
As outdoor temperature TO>33 DEG C, outdoor fan rotating speed is N4;
When outdoor temperature 27 DEG C of <TO≤33 DEG C, outdoor fan rotating speed is N3;
When outdoor temperature 20 DEG C of <TO≤27 DEG C, outdoor fan rotating speed is N2;
When outdoor temperature 12 DEG C of <TO≤20 DEG C, outdoor fan rotating speed is N1;
When outdoor temperature TO≤12 DEG C, outdoor fan shuts down.
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