CN101915449B - Constant temperature dehumidification control method and device for heat pump type air conditioner - Google Patents
Constant temperature dehumidification control method and device for heat pump type air conditioner Download PDFInfo
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- CN101915449B CN101915449B CN 201010281620 CN201010281620A CN101915449B CN 101915449 B CN101915449 B CN 101915449B CN 201010281620 CN201010281620 CN 201010281620 CN 201010281620 A CN201010281620 A CN 201010281620A CN 101915449 B CN101915449 B CN 101915449B
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007613 environmental effect Effects 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000013461 design Methods 0.000 claims description 25
- 230000000052 comparative effect Effects 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The invention discloses a constant temperature dehumidification control method and a device for a heat pump type air conditioner, and the method comprises the following steps: setting a first comparison threshold, constantly detecting the current environmental temperature, obtaining the judgment result of whether to start a refrigerating device or a heating device firstly according to the situation that whether the current environmental temperature is higher than or lower than the temperature set by a user and exceeds the first comparison threshold or not, and then re-starting the constant temperature dehumidification device; if the current environmental temperature is higher than the temperature set by the user and exceeds the first comparison threshold, the refrigerating device is firstly started for refrigerating; if the current environmental temperature is lower than the temperature set by the user and exceeds the first comparison threshold, the electric heating device is firstly started for heating; otherwise, the constant temperature dehumidification device is directly started. The method and the device can decide whether to start the refrigerating device or the heating device firstly through the comparison of the current environmental temperature with the temperature set by the user, thereby realizing constant temperature dehumidification of the air conditioner and solving the problem of discomfort of the user caused by reducing the indoor temperature during the dehumidification process.
Description
Technical field
The present invention relates to heat pump type air conditioner, be specifically related to the constant temperature dehumidification control method and the device of heat pump type air conditioner.
Background technology
Along with improving constantly of fast development of national economy and living standards of the people, people are also increasingly high to the comfort level requirement of inhabitation, working environment, not only also require to control to adjust to temperature but also to humidity.
Now domestic air conditioner all possess refrigeration usually, heat, dehumidification function, still, when the dehumidifying operation, indoor heat exchanger can be in low-temperature condition, therefore, indoor temperature is reduced, the cold wind that air outlet blows out can make us not feeling well and answer.In order to solve this contradiction, existing air-conditioner generally is designed to low wind, intermittent duty on dehumidification function, yet this dehumidification mode dehumidifying effect is relatively poor, can not reach the effect of constant temperature dehumidification simultaneously.
Summary of the invention
Technical problem to be solved by this invention is when solving domestic air conditioner dehumidifying operation indoor temperature to be reduced, and can't realize the problem of constant temperature dehumidification.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopted provides a kind of constant temperature dehumidification control method of heat pump type air conditioner; Set the first comparison threshold value and constantly detect current environmental temperature; Whether be higher or lower than user's design temperature and the difference between the two and whether exceed the judged result that the said first comparison threshold value obtains whether at first to start refrigeration or heating combined equipment, and then startup constant temperature dehumidification device; If current environmental temperature is higher than difference between user's design temperature and the former with the latter greater than said first comparison during threshold value; Then start refrigerating plant earlier and freeze, when the difference of current environmental temperature and user's design temperature is compared threshold value less than said first, restart the constant temperature dehumidification device; If current environmental temperature is lower than the user's design temperature and the latter and the difference between the former greater than said first comparison during threshold value; Then start earlier electric heater unit and heat, after the temperature and the difference of current environmental temperature that the user sets are compared threshold value less than said first, restart the constant temperature dehumidification device; Otherwise directly start the constant temperature dehumidification device.
In said method, the said first comparison threshold value is 1-2 ℃.
In said method; Set the second comparison threshold value; After the constant temperature dehumidification device starts, constantly detect current environmental temperature and compare, if current environmental temperature is lower than last environment temperature and the difference between the two when exceeding the said second comparison threshold value with the testing result of last time; Then the dutycycle with electric heater unit improves, and increases electric thermal power and comes the balanced system cold; If current environmental temperature is higher than last current environmental temperature and the difference between the two when exceeding the said second comparison threshold value, then the dutycycle with electric heater unit reduces, and reduces electric thermal power and comes the balance cold; Otherwise the dutycycle of keeping electric heater unit is constant.
In said method; In the constant temperature dehumidification device course of work; After if the dutycycle of electric heater unit improves, when current environmental temperature still is lower than last current environmental temperature and the difference between the two and exceeds the said second comparison threshold value, then stop outer blower fan and reduce cold with equilibrium temperature.
The present invention also provides a kind of constant temperature dehumidification control device of heat pump type air conditioner, comprises temperature sensor, first comparing unit and control module.Said temperature sensor constantly detects and obtains the current environmental temperature signal; Said first comparing unit is provided with first, second memory that is used to store the user's design temperature and the first comparison threshold value; Said first comparing unit compares current environmental temperature and the user's design temperature that temperature sensor gets access in real time; If the difference that current environmental temperature is higher than between user's design temperature and the former with the latter during threshold value, is then exported first compare result signal greater than said first comparison; If being lower than the user's design temperature and the latter and the difference between the former, current environmental temperature during threshold value, then exports the 3rd compare result signal greater than said first comparison; Otherwise export second compare result signal; Said control module when receiving first compare result signal, is exported refrigerating plant start-up control signal according to the compare result signal output control signal corresponding of first comparing unit output; When receiving second compare result signal, output constant temperature dehumidification device start-up control signal; When receiving the 3rd compare result signal, output electric heater unit start-up control signal.
In said apparatus, the said first comparison threshold value is 1-2 ℃.
In said apparatus; Also comprise second comparing unit; Which is provided with the 3rd memory that is used to store the second comparison threshold value; Said second comparing unit compares current environmental temperature and the last environment temperature that temperature sensor gets access in real time, if comparative result show when current environmental temperature is lower than last environment temperature and the difference between the two greater than the said second comparison threshold value, then export the 4th compare result signal; If comparative result shows when current environmental temperature is higher than last environment temperature and the difference between the two greater than the said second comparison threshold value, then exports the 5th compare result signal; Control module is according to the compare result signal output control signal corresponding of second comparing unit output, when receiving the 4th compare result signal, with the dutycycle raising of electric heater unit; When receiving the 5th compare result signal, with the dutycycle reduction of electric heater unit.
The present invention; When carrying out constant temperature dehumidification; At first whether at first freeze or heating combined equipment through the relatively decision of current environmental temperature and user's design temperature; And in the constant temperature dehumidification process, constantly compare, thereby realized the constant temperature dehumidification of air-conditioner, make indoor temperature reduce the problem that causes that the user is uncomfortable in the existing air-conditioner dehumidification process thereby solved.
Description of drawings
Fig. 1 is the constant temperature dehumidification control method sketch map of heat pump type air conditioner provided by the invention;
Fig. 2 is the processing procedure sketch map after temperature descends in the constant temperature dehumidification control method course of work of heat pump type air conditioner provided by the invention;
Fig. 3 is the processing procedure sketch map after temperature raises in the constant temperature dehumidification control method course of work of heat pump type air conditioner provided by the invention;
Fig. 4 is an electric heater unit dutyfactor adjusting method sketch map.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is made detailed explanation.
The invention provides a kind of constant temperature dehumidification control method of heat pump type air conditioner; As shown in Figure 1; At first set the first comparison threshold value Δ T; When carrying out constant temperature dehumidification, at first constantly detect current environmental temperature Tr, and in real time and user's design temperature Ts compare; Whether the absolute value that whether is higher or lower than user's design temperature Ts and the difference Tr-Ts between the two with current environmental temperature Tr exceeds whether the said first comparison threshold value Δ T acquisition at first freezes or the judged result of heating combined equipment, and then startup constant temperature dehumidification device carries out constant temperature dehumidification.If when detecting current environmental temperature Tr and being higher than temperature T s that the user sets and Tr-Ts greater than the said first comparison threshold value Δ T; Then start refrigerating plant earlier and freeze, after the difference Tr-Ts of current environmental temperature Tr and user's design temperature Ts compares threshold value Δ T less than first, carry out constant temperature dehumidification again; If the absolute value that detected current environmental temperature Tr is lower than user's design temperature Ts and Tr-Ts is during greater than the said first comparison threshold value Δ T; Then start earlier the electric heater unit heating of ventilating, after the absolute value of the difference Tr-Ts of current environmental temperature Tr and user's design temperature Ts is compared threshold value Δ T less than first, carry out constant temperature dehumidification again; Otherwise directly start the constant temperature dehumidification device and carry out constant temperature dehumidification, the first comparison threshold value Δ T can choose 1-2 ℃.
Adopt method provided by the invention, no matter how many initial environment temperatures is, final operational mode all will be " constant temperature dehumidification ".Under " constant temperature dehumidification " mode, air-conditioner freezes, because of the cold-producing medium evaporation; Be lower than 0 ℃ in the evaporator surface temperature, air circulation is not smooth in the time of so, will form frost and be unfavorable for condensing of water at evaporator surface; For head it off is opened low-grade wind speed with indoor fan; Melt because of air hot in frost on the evaporimeter and the air carries out heat exchange, formed a large amount of condensed waters, the purpose of dehumidifying reaches thus; But,, open the heating of air-conditioner auxiliary electrical for this negative heat of balance and can keep temperature-resistant again because the cause of air circulation causes temperature to reduce gradually because of evaporator temperature is lower than air themperature.
In the constant temperature dehumidification process, constantly detect current environmental temperature Tr, and compare with the testing result of last time.If constant temperature dehumidification is environment temperature decline after a period of time; Be that current environmental temperature is when being lower than last environment temperature; Then the dutycycle with electric heating work improves; Increase electric thermal power and come the balanced system cold, neither rising like temperature does not descend that then to keep the electric heating dutycycle constant yet, still descends like temperature and then stops outer blower fan and reduce cold with equilibrium temperature; Then reduce the electric heating dutycycle like temperature recovery, when promptly current environmental temperature was higher than last current environmental temperature, then the dutycycle with electric heating work reduced; Reduce electric thermal power and come the balance cold; Regain thermal balance, reach the constant temperature dehumidification purpose, like Fig. 2, shown in Figure 3.
The electric heater unit dutyfactor adjusting method is as shown in Figure 4; If electric heater unit was separated into 6 startups in 1 minute, each time that starts is dutycycle divided by 10, as 50% each start-up time of dutycycle be 5s; 40% each start-up time of dutycycle is 4s; 60% each start-up time of dutycycle is 6s, and in like manner 49% each start-up time of dutycycle is 4.9s, and promptly improving or reduce the electric heating dutycycle is exactly to increase or reduce each time that starts.
The present invention also provides a kind of constant temperature dehumidification control device of heat pump type air conditioner, comprises temperature sensor, first comparing unit and control module,
Said temperature sensor constantly detects and obtains the current environmental temperature signal;
Said first comparing unit is provided with first, second memory that is used to store the user's design temperature and the first comparison threshold value; First comparing unit compares current environmental temperature and the user's design temperature that temperature sensor gets access in real time; If when current environmental temperature is higher than temperature that the user sets and the difference between the former with the latter greater than the said first comparison threshold value, then export first compare result signal; If current environmental temperature is lower than the user's design temperature and the latter and the difference between the former greater than the said first comparison threshold value, then export the 3rd compare result signal; Otherwise export second compare result signal; Said control module when receiving first compare result signal, is exported refrigerating plant start-up control signal according to the compare result signal output control signal corresponding of first comparing unit output; When receiving second compare result signal, output constant temperature dehumidification device start-up control signal; When receiving the 3rd compare result signal, output electric heater unit start-up control signal.Desirable 1-2 ℃ of the first comparison threshold value.
In order to realize constant temperature dehumidification better; Also be provided with second comparing unit in the constant temperature dehumidification control device of heat pump type air conditioner provided by the invention; Which is provided with the 3rd memory that is used to store the second comparison threshold value; Second comparing unit compares current environmental temperature and the last environment temperature that temperature sensor gets access in real time; If comparative result shows when current environmental temperature is lower than the last environment temperature and the latter and the difference between the former greater than the said second comparison threshold value, then exports the 4th compare result signal; If comparative result shows when current environmental temperature is higher than last environment temperature and the difference between the former with the latter greater than the said second comparison threshold value, then exports the 5th compare result signal; Control module is according to the compare result signal output control signal corresponding of second comparing unit output, when receiving the 4th compare result signal, with the dutycycle raising of electrical heating work; When receiving the 5th compare result signal, with the dutycycle reduction of electrical heating work.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of under enlightenment of the present invention, making, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (5)
1. the constant temperature dehumidification control method of heat pump type air conditioner; It is characterized in that; Set the first comparison threshold value and constantly detect current environmental temperature; Whether be higher or lower than user's design temperature and the difference between the two with current environmental temperature and whether exceed the said first comparison threshold value and obtain whether at first to start the judged result of refrigeration or heating combined equipment, and then start the constant temperature dehumidification device; If current environmental temperature is higher than difference between user's design temperature and the former with the latter greater than said first comparison during threshold value; Then start refrigerating plant earlier and freeze, when the difference of current environmental temperature and user's design temperature is compared threshold value less than said first, restart the constant temperature dehumidification device; If current environmental temperature is lower than the user's design temperature and the latter and the difference between the former greater than said first comparison during threshold value; Then start earlier electric heater unit and heat, after the temperature and the difference of current environmental temperature that the user sets are compared threshold value less than said first, restart the constant temperature dehumidification device; Otherwise directly start the constant temperature dehumidification device;
Set the second comparison threshold value; After the constant temperature dehumidification device starts; Constantly detect current environmental temperature and compare with the testing result of last time; If current environmental temperature is lower than last environment temperature and the difference between the two when exceeding the said second comparison threshold value, then the dutycycle with electric heater unit improves, and increases electric thermal power and comes the balanced system cold; If current environmental temperature is higher than last current environmental temperature and the difference between the two when exceeding the said second comparison threshold value, then the dutycycle with electric heater unit reduces, and reduces electric thermal power and comes the balance cold; Otherwise the dutycycle of keeping electric heater unit is constant.
2. the constant temperature dehumidification control method of heat pump type air conditioner as claimed in claim 1 is characterized in that, the said first comparison threshold value is 1-2 ℃.
3. the constant temperature dehumidification control method of heat pump type air conditioner as claimed in claim 1; It is characterized in that; In the constant temperature dehumidification device course of work; After if the dutycycle of electric heater unit improves, when current environmental temperature still is lower than last current environmental temperature and the difference between the two and exceeds the said second comparison threshold value, then stop outer blower fan and reduce cold with equilibrium temperature.
4. the constant temperature dehumidification control device of heat pump type air conditioner is characterized in that comprising:
Temperature sensor constantly detects and obtains the current environmental temperature signal;
First comparing unit; Which is provided with first, second memory that is used to store the user's design temperature and the first comparison threshold value; Said first comparing unit compares current environmental temperature and the user's design temperature that temperature sensor gets access in real time; If the difference that current environmental temperature is higher than between user's design temperature and the former with the latter during threshold value, is then exported first compare result signal greater than said first comparison; If being lower than the user's design temperature and the latter and the difference between the former, current environmental temperature during threshold value, then exports the 3rd compare result signal greater than said first comparison; Otherwise export second compare result signal;
Control module, according to the compare result signal output control signal corresponding of first comparing unit output, when receiving first compare result signal, output refrigerating plant start-up control signal; When receiving second compare result signal, output constant temperature dehumidification device start-up control signal; When receiving the 3rd compare result signal, output electric heater unit start-up control signal;
Second comparing unit; Which is provided with the 3rd memory that is used to store the second comparison threshold value; Said second comparing unit compares current environmental temperature and the last environment temperature that temperature sensor gets access in real time; If comparative result shows when current environmental temperature is lower than last environment temperature and the difference between the two greater than the said second comparison threshold value, then exports the 4th compare result signal; If comparative result shows when current environmental temperature is higher than last environment temperature and the difference between the two greater than the said second comparison threshold value, then exports the 5th compare result signal;
Control module is according to the compare result signal output control signal corresponding of second comparing unit output, when receiving the 4th compare result signal, with the dutycycle raising of electric heater unit; When receiving the 5th compare result signal, with the dutycycle reduction of electric heater unit.
5. the constant temperature dehumidification control device of heat pump type air conditioner as claimed in claim 4 is characterized in that the said first comparison threshold value is 1-2 ℃.
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| WO2014169416A1 (en) * | 2013-04-15 | 2014-10-23 | Liu Shuigen | Heating method and heating apparatus |
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| CN104214895B (en) * | 2014-08-22 | 2017-01-11 | 珠海格力电器股份有限公司 | Method and system for controlling constant-temperature dehumidification of air conditioner |
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Application publication date: 20101215 Assignee: NINGBO JITONG INFORMATION TECHNOLOGY CO., LTD. Assignor: Ningbo AUX Group. Contract record no.: 2014330000142 Denomination of invention: Constant temperature dehumidification control method and device for heat pump type air conditioner Granted publication date: 20120718 License type: Exclusive License Record date: 20140509 |
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