CN103884072A - Air-conditioner, indoor unit and condensation-proof control method of air-conditioner and indoor unit - Google Patents
Air-conditioner, indoor unit and condensation-proof control method of air-conditioner and indoor unit Download PDFInfo
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Abstract
The invention relates to the technical field of air-conditioning and provides an air-conditioner, an indoor unit and a condensation-proof control method of the air-conditioner and the indoor unit. The condensation-proof control method includes the following steps that (1) return air temperature and return air humidity of an air return port in the indoor unit and air supply temperature of an air supply port of the indoor unit are detected, and dew point temperature of the indoor unit is calculated according to the return air temperature and the return air humidity; (2) the difference value delta T between the air supply temperature and the dew point temperature is calculated, if delta T is larger than or equal to a preset temperature difference initial value of the indoor unit, current opening degree of a throttling part in the indoor unit is maintained, and the steps (1) and (2) are repeatedly executed; if delta T is smaller than the preset temperature difference initial value of the indoor unit, the opening degree of the throttling part in the indoor unit is reduced, and the steps (1) and (2) are repeatedly executed. According to the air-conditioner, the indoor unit and the condensation-proof control method of the air-conditioner and the indoor unit, the air supply temperature indoors is always higher than the dew point temperature by the control method, and thereby, condensation can be effectively avoided.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, relate to a kind of air conditioner, indoor set and anti-condensation control method thereof.
Background technology
Multi-online air-conditioning system has higher EER(Energy Efficiency Ratio coefficient of performance of refrigerating), be applicable to various varying duties place, therefore in Refrigeration Engineering, be widely used.But along with its extensive use, user is more and more higher to the requirement of regulator performance in air system, especially condensation problem.The condensation of multi-online air-conditioning system is mainly present in two places in indoor set: one, air-conditioner panel surface has condensate water to generate; Two, air-supply process has the globule to blow out.At present, on market, the indoor set of panel is to prevent that wind guide strip place from producing the general method that adopts flocking on wind guide strip windward side of condensation.On the windward side of wind guide strip, flocking can increase wind guide strip thermal conduction resistance, thereby improves the possibility that reduces condensation with the temperature of hot-air contact-making surface.But when room air dew-point temperature is too high or wind pushing temperature is too low, even if flocking condensation is still inevitable.And the heat-barrier material that flocking adopts possesses certain water imbibition, after long-term use, its thermal insulation can significantly decay, and anti-condensation ability also reduces greatly.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defect of prior art, and a kind of control method that can effectively prevent that condensation from occurring is provided, and adopts indoor set and the air conditioner of this control method.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of condensation prevention control method of indoor set is provided, comprises the following steps:
S1: detect the wind pushing temperature at the air outlet place of return air temperature, return air humidity and the indoor set at return air inlet place in indoor set, calculate the dew-point temperature of indoor set according to described return air temperature and described return air hygrometer;
S2: calculate the difference DELTA T between described wind pushing temperature and described dew-point temperature, if the default temperature difference initial value of Δ T >=described indoor set, the throttle part in indoor set keeps current aperture, and repeated execution of steps S1, S2; If the default temperature difference initial value of indoor set described in Δ T <, reduces the aperture of the throttle part in indoor set repeated execution of steps S1, S2.
Particularly, described throttle part is choke valve or expansion valve.
Particularly, in the indoor set of described air conditioner, return air inlet place is provided with the first temperature sensor, utilizes described the first temperature sensor to detect return air temperature in step S1.
Particularly, in the indoor set of described air conditioner, return air inlet place is provided with humidity sensor, utilizes described humidity sensor to detect return air humidity in step S1.
Particularly, the indoor set inner wind outlet place of described air conditioner is provided with the second temperature sensor, utilizes described the second temperature sensor to detect wind pushing temperature in step S1.
Particularly, in the control system of the indoor set of described air conditioner, set calculation procedure, in step S1, utilize described calculation procedure to calculate dew-point temperature detecting after described return air temperature and described return air humidity.
The present invention also provides a kind of indoor set, comprise body, be located at evaporimeter, control system and blower fan in body, be provided with return air inlet in described body, and the air outlet just right with described blower fan, described evaporator inlet place is provided with throttle part, described return air inlet place is provided with for detection of the first temperature sensor of return air temperature and for detection of the humidity sensor of return air humidity, and described air outlet place is provided with the second temperature sensor for detection of wind pushing temperature; In described control system, being provided with can be according to the calculation procedure of described return air temperature and described return air humidity calculating dew-point temperature.
Particularly, described throttle part is choke valve or expansion valve.
The present invention also provides a kind of air conditioner, comprises indoor set and off-premises station, and described indoor set has above-mentioned structure.
Further, described off-premises station is many, and parallel with one another.
In the present invention, utilize above-mentioned control method, realize accurate control to indoor set wind pushing temperature, in holding chamber wind pushing temperature all the time higher than dew-point temperature, thereby effectively prevent the generation of condensation.
Brief description of the drawings
Fig. 1 is indoor set condensation prevention control method flow chart provided by the invention;
Fig. 2 is the schematic diagram of air conditioner provided by the invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1, it is indoor set condensation prevention control method flow chart provided by the invention.The condensation prevention control method of indoor set provided by the invention, comprises the following steps:
S1: detect the wind pushing temperature at the air outlet place of return air temperature, return air humidity and the indoor set at return air inlet place in indoor set, calculate the dew-point temperature of indoor set according to described return air temperature and described return air hygrometer;
S2: the difference DELTA T between the wind pushing temperature described in calculating and described dew-point temperature, if the default temperature difference initial value of Δ T >=described indoor set, the throttle part in indoor set keeps current aperture, and repeated execution of steps S1, S2; If the default temperature difference initial value of indoor set described in Δ T <, reduces the aperture of the throttle part in indoor set repeated execution of steps S1, S2.
Particularly, in above-mentioned steps S1, in indoor set, return air inlet place is provided with the first temperature sensor and humidity sensor, and utilizes described the first temperature sensor and described humidity sensor to pass the temperature and the humidity that detect return air place.
Same, in above-mentioned steps S1, at indoor set inner wind outlet, place is provided with the second temperature sensor, utilizes described the second temperature sensor to detect the wind pushing temperature at air outlet place.
In above-mentioned steps S1, in the control system of the indoor set of air conditioner, set calculation procedure, utilize described calculation procedure to calculate dew-point temperature detecting after described return air temperature and described return air humidity.Described dew-point temperature refers to that air is at moisture content and air pressure all under immovable condition, is cooled to the temperature when saturated.That is to say temperature when airborne steam becomes dewdrop.The in the situation that of known return air temperature and return air humidity, calculating dew-point temperature is conventional calculating means in this area, so locate calculation procedure not to be described specifically.
In above-mentioned steps S1, the first temperature sensor, the second temperature sensor and humidity sensor are conventional detection means, and accuracy of detection is high, and cost is low, and are easy to change, and are applied to indoor set easy to use.
In above-mentioned control method, the throttle part of indoor set specifically can be choke valve or expansion valve, the aperture of these throttle parts is easy to control, in the present embodiment, control system by indoor set is directly controlled, and adopts the mode of this control throttle part aperture to avoid condensation to produce, more existing various control modes, cost is minimum, the most effective.
In above-mentioned steps S2, the default temperature difference initial value of indoor set is the temperature approach of condensation while occurring, and this temperature difference initial value is the numerical value that indoor set drew according to each component capabilities in the design phase.Suppose that this temperature difference initial value is 2 DEG C, in the time of difference DELTA T >=2 between described wind pushing temperature and described dew-point temperature DEG C, the throttle part of indoor set does not adjust, and keeps the aperture of current normal operation; 2 DEG C of difference DELTA T < between wind pushing temperature and dew-point temperature, now need to reduce the aperture of throttle part, improve indoor evaporating temperature, wind pushing temperature is raise, and repeat above-mentioned steps S1, S2, until wind pushing temperature, higher than 2 DEG C of dew-point temperatures, stops the aperture of adjusting joint stream unit, wind pushing temperature is remained higher than 2 DEG C of room air dew-point temperatures, thereby effectively prevent condensation.
The invention provides a kind of indoor set, comprise body, be located at evaporimeter, control system and blower fan in body, be provided with return air inlet in described body, and the air outlet just right with described blower fan, described evaporator inlet place is provided with throttle part, described return air inlet place is provided with for detection of the first temperature sensor of return air temperature and for detection of the humidity sensor of return air humidity, and described air outlet place is provided with the second temperature sensor for detection of wind pushing temperature; In described control system, being provided with can be according to the calculation procedure of described return air temperature and described return air humidity calculating dew-point temperature.Indoor set in the present embodiment, utilizes above-mentioned control method, realizes the accurate control to indoor set wind pushing temperature, thereby effectively prevents the generation of condensation.
Particularly, in the present embodiment, the throttle part of indoor set is choke valve or expansion valve.
With reference to Fig. 2, the present invention also provides a kind of air conditioner 100, comprise indoor set 200 and off-premises station 300, off-premises station 300 comprises gas-liquid separator 310, compressor 320, oil eliminator 330, cross valve 340, condenser 350 and throttling arrangement 360, and this cross valve 340 has exhaust port 341, air-breathing interface 342, condenser interface 343 and evaporimeter interface 344.Indoor set 200 has above-mentioned structure, it specifically comprises body (not shown), is located at evaporimeter 210, control system and blower fan 220 in body, body is provided with return air inlet, and the air outlet just right with blower fan 220, evaporimeter 210 porch are provided with throttle part 230, return air inlet place is provided with for detection of the first temperature sensor 240 of return air temperature and for detection of the humidity sensor 250 of return air humidity, and air outlet place is provided with the second temperature sensor 260 for detection of wind pushing temperature.
And in indoor set, the air inlet 321 of compressor 320 is communicated with the gas outlet 311 of gas-liquid separator 310, the exhaust outlet 322 of compressor 320 is communicated with the gas outlet 331 of oil eliminator 330, the oil-out 332 of oil eliminator 330 is communicated with compressor 320, the air inlet 333 of oil eliminator 330 is communicated with the exhaust port 341 of cross valve 340, the air-breathing interface 342 of cross valve 340 is communicated with the air inlet 312 of gas-liquid separator 310, the condenser interface 343 of cross valve 340 is connected with the air inlet pipe of condenser 350, the escape pipe of condenser 350 and throttling arrangement 360 are connected in series, and be connected with the evaporimeter 210 of indoor set 200 by liquid pipe 370, the evaporimeter interface 344 of cross valve 340 is connected with the evaporimeter 210 of indoor set 200 by tracheae 380.
There is shown an off-premises station 300 with said structure, certainly, off-premises station 300 can be many, and parallel with one another.
In the present invention, air conditioner adopts above-mentioned indoor machine structure, by wind pushing temperature in conditioning chamber, it is remained on dew-point temperature, thereby effectively avoids the generation of condensation.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a condensation prevention control method for indoor set, is characterized in that: comprise the following steps:
S1: detect the wind pushing temperature at the air outlet place of return air temperature, return air humidity and the indoor set at return air inlet place in indoor set, calculate the dew-point temperature of indoor set according to described return air temperature and described return air hygrometer;
S2: calculate the difference DELTA T between described wind pushing temperature and described dew-point temperature, if the default temperature difference initial value of Δ T >=described indoor set, the throttle part in indoor set keeps current aperture, and repeated execution of steps S1, S2; If the default temperature difference initial value of indoor set described in Δ T <, reduces the aperture of the throttle part in indoor set repeated execution of steps S1, S2.
2. the condensation prevention control method of indoor set as claimed in claim 1, is characterized in that: described throttle part is choke valve or expansion valve.
3. the condensation prevention control method of indoor set as claimed in claim 1, is characterized in that: in the indoor set of described air conditioner, return air inlet place is provided with the first temperature sensor, utilizes described the first temperature sensor to detect return air temperature in step S1.
4. the condensation prevention control method of indoor set as claimed in claim 1, is characterized in that: in the indoor set of described air conditioner, return air inlet place is provided with humidity sensor, utilizes described humidity sensor to detect return air humidity in step S1.
5. the condensation prevention control method of indoor set as claimed in claim 1, is characterized in that: the indoor set inner wind outlet place of described air conditioner is provided with the second temperature sensor, utilizes described the second temperature sensor to detect wind pushing temperature in step S1.
6. the condensation prevention control method of indoor set as claimed in claim 1, it is characterized in that: in the control system of the indoor set of described air conditioner, set calculation procedure, in step S1, utilize described calculation procedure to calculate dew-point temperature detecting after described return air temperature and described return air humidity.
7. an indoor set, comprise body, be located at evaporimeter, control system and blower fan in body, be provided with return air inlet in described body, and the air outlet just right with described blower fan, it is characterized in that: described evaporator inlet place is provided with throttle part, described return air inlet place is provided with for detection of the first temperature sensor of return air temperature and for detection of the humidity sensor of return air humidity, and described air outlet place is provided with the second temperature sensor for detection of wind pushing temperature; In described control system, being provided with can be according to the calculation procedure of described return air temperature and described return air humidity calculating dew-point temperature.
8. indoor set as claimed in claim 7, is characterized in that: described throttle part is choke valve or expansion valve.
9. an air conditioner, comprises indoor set and off-premises station, it is characterized in that: described indoor set has structure as claimed in claim 7 or 8.
10. air conditioner as claimed in claim 9, is characterized in that: described off-premises station is many, and parallel with one another.
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| CN201210557349.6A CN103884072A (en) | 2012-12-19 | 2012-12-19 | Air-conditioner, indoor unit and condensation-proof control method of air-conditioner and indoor unit |
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| CN103292448A (en) * | 2013-05-30 | 2013-09-11 | 华为技术有限公司 | Method and device for preventing condensation of refrigerating device |
| CN104279717A (en) * | 2014-10-29 | 2015-01-14 | 珠海格力电器股份有限公司 | Air conditioner and control method and device thereof |
| CN105006257A (en) * | 2015-05-20 | 2015-10-28 | 大亚湾核电运营管理有限责任公司 | Drying device and method for secondary side of million-KW level pressurized water reactor nuclear power station evaporator |
| CN105240996A (en) * | 2015-09-24 | 2016-01-13 | 芜湖美智空调设备有限公司 | Method for controlling air conditioner |
| CN105357939A (en) * | 2015-12-04 | 2016-02-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Electric cabinet temperature humidity control system and method |
| CN105783185A (en) * | 2016-03-04 | 2016-07-20 | 广东美的制冷设备有限公司 | Control method and device for preventing condensation of air conditioner |
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