CN103411341A - Constant-temperature dehumidifying air conditioner and dehumidifying method - Google Patents
Constant-temperature dehumidifying air conditioner and dehumidifying method Download PDFInfo
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- CN103411341A CN103411341A CN2013103918190A CN201310391819A CN103411341A CN 103411341 A CN103411341 A CN 103411341A CN 2013103918190 A CN2013103918190 A CN 2013103918190A CN 201310391819 A CN201310391819 A CN 201310391819A CN 103411341 A CN103411341 A CN 103411341A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to a constant-temperature dehumidifying air conditioner and a dehumidifying method. The air conditioner comprises a compressor, a cross valve, an outdoor heat exchanger, throttling devices a and b, and an indoor heat exchanger which are connected through a refrigerating pipeline, wherein the indoor heat exchanger comprises a first heat exchanger and a second heat exchanger which are connected through the throttling device b, and the air conditioner is controlled to switch among a refrigerating dehumidifying mode, a reheating dehumidifying mode or a heating dehumidifying mode through changing the states of the compressor, the cross valve and the throttling devices a and b according to the difference between the indoor temperature and the set temperature. The air conditioner has the advantages that while the air conditioner dehumidifies, the indoor temperature is maintained near the set temperature value, and the comfortable indoor environment is realized; meanwhile, the adverse effect on the air conditioner by the frequent switching of the running modes is avoided, so the service life of the air conditioner is prolonged.
Description
Technical field
The invention belongs to the air-conditioner technical field, specifically, relate to a kind of constant temperature dehumidification method that can realize air-conditioner and the air-conditioner of constant temperature dehumidification.
Background technology
Existing air-conditioner is all with dehumidification function, and air-conditioner is under dehumidifying operation mode and cooling operation pattern, in refrigeration pipe, the flow direction of refrigerant is identical, thereby, existing air-conditioner does not have difference in essence in dehumidifying and cooling operation pattern, is only that the control room inner blower is realized than the low wind speed of cooling operation pattern end or in the mode of intermittent working under the operation mode that dehumidifies.And in dehumidifying, can not control the temperature in room under operation mode, and can produce cold air distribution, in dehumidifying, also can bring the reduction of room temperature.Thereby, humidity is higher in the situation that indoor temperature is not high, and air-conditioner operates under the dehumidifying operation mode, in the time of dehumidifying, also can make temperature reduction or air-conditioning temperature in room too low, cause the people in room to feel cold, can not obtain comfortable indoor environment.
Summary of the invention
The object of the present invention is to provide a kind of air-conditioner of constant temperature dehumidification, solved existing air-conditioner under the dehumidifying operation mode, in the time of dehumidification process, reduced indoor temperature, cause the uncomfortable technical problem of indoor temperature.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of type constant temperature dehumidifying air conditioner, comprise the compressor, cross valve, outdoor heat converter, throttling arrangement a, b and the indoor heat converter that by refrigeration pipe, join, wherein, indoor heat converter comprises the first heat exchanger and the second heat exchanger, between the first heat exchanger and the second heat exchanger, join by throttling arrangement b, air-conditioner is according to the difference of indoor temperature and design temperature, controls air-conditioner in the refrigerated dehumidification pattern, hot dehumidification mode or heat under dehumidification mode switches again by the state that changes compressor, cross valve and throttling arrangement a, b.
Further, air-conditioner also comprises control module, is electrically connected to described compressor, cross valve and throttling arrangement a, b; Under described hot dehumidification mode again, control described throttling arrangement a open, do not carry out throttling, control the b action, carry out throttling, in described refrigerated dehumidification pattern with heat under dehumidification mode, controls described throttling arrangement b and open, do not carry out throttling.
Further, under hot dehumidification mode again, in refrigeration pipe, the refrigerant flow direction is identical with the refrigerated dehumidification pattern.
Preferably, air-conditioner comprises the temperature detecting unit joined with control module, temperature detecting unit detects indoor temperature RT, and indoor temperature RT is transferred to control module, control module compares indoor temperature RT and design temperature ST, and according to comparative result, control the state of compressor, cross valve, throttling arrangement a, b, thereby control air-conditioner in the refrigerated dehumidification pattern, hot dehumidification mode or heat under three kinds of dehumidification modes of dehumidification mode switches again.
Preferably, air-conditioner comprises the timing unit joined with control module, timing unit is for carrying out timing to air-conditioner dehumidification mode of living in, and clocking value is transferred to control module, while only having air-conditioner dehumidification mode of living in to reach the scheduled time, just allow it to switch to another dehumidification mode, thereby, can prevent that the parts such as compressor, cross valve from frequently switching, air-conditioner is produced to harmful effect.
Based on the design of above-mentioned type constant temperature dehumidifying air conditioner, the invention allows for a kind of air-conditioner constant temperature dehumidification method, comprise the steps:
(1) air-conditioner detects indoor temperature RT, and the indoor temperature RT and the design temperature ST that detect are compared, and obtains temperature difference E;
(2) the temperature difference E obtained according to step (1), divide into refrigerated dehumidification pattern, hot dehumidification mode and heat dehumidification mode again by air conditioner dehumidification mode;
(3) when air-conditioner is in hot dehumidification mode again, control module is controlled throttling arrangement b action, carries out throttling; When air-conditioner is in the refrigerated dehumidification pattern and heats under dehumidification mode, it is open that control module is controlled throttling arrangement b, do not carry out throttling.
Wherein, air-conditioner judges that according to the temperature difference E obtained the method for its dehumidification mode is:
When described temperature difference E>T, air-conditioner running refrigerating dehumidification mode;
When described temperature difference E<-during T, the air-conditioner operation heats dehumidification mode;
When described temperature difference-T≤E≤T, the air-conditioner operation is hot dehumidification mode again.
Preferably, then under hot dehumidification mode, in the air-conditioner refrigeration pipe, the refrigerant flow direction is identical with the refrigerated dehumidification pattern.
In order to prevent the frequent switching of air conditioner dehumidification mode to produce harmful effect to air-conditioner, if when air-conditioner switches to another kind of dehumidification mode from a kind of dehumidification mode, need at least to guarantee its under a kind of dehumidification mode running time t.
Further, when air-conditioner switched to another kind of dehumidification mode, the timing unit zero clearing, restarted timing.
Compared with prior art, advantage of the present invention and good effect are: air-conditioner of the present invention and control method thereof are selected dehumidification mode according to the difference of indoor temperature and design temperature.Wherein, dehumidification mode is divided into refrigerated dehumidification pattern, hot dehumidification mode and heat dehumidification mode again according to the state of compressor, cross valve and throttling arrangement a, b.Air-conditioner, under dehumidification mode, during near design temperature, makes air-conditioner be in hot dehumidification mode when indoor temperature again, in the time of dehumidifying, makes indoor temperature maintain design temperature; When indoor temperature, during higher than the design temperature higher limit, make air-conditioner be in the refrigerated dehumidification pattern, in the time of dehumidifying, make indoor temperature drop to design temperature; When indoor temperature, during lower than the design temperature lower limit, air-conditioner is in and heats dehumidification mode, in the time of dehumidifying, make indoor temperature rise to design temperature.Thereby the present invention can guarantee that air-conditioner, in dehumidifying, maintains near set temperature value indoor temperature, can realize comfortable indoor environment.
The present invention when from a kind of dehumidification mode, switching to another kind of dehumidification mode, need at least to guarantee its under a kind of dehumidification mode running time t, can prevent that the frequent switching of operation mode from, to the harmful effect that air-conditioner causes, having extended the service life of air-conditioner.
The accompanying drawing explanation
Fig. 1 is the theory diagram of the specific embodiment of the invention.
Fig. 2 is the structural representation in specific embodiment of the invention refrigerant loop.
Fig. 3 is the flow chart of the specific embodiment of the invention.
The specific embodiment
Below the specific embodiment of the present invention is described in detail.
Shown in Figure 1, the present embodiment has proposed a kind of type constant temperature dehumidifying air conditioner, and air-conditioner comprises control module, refrigerant loop, temperature detecting unit and timing unit.
Wherein, the design temperature ST that control module is set for the indoor temperature RT that receives temperature detecting unit and detect, by remote controller, calculate temperature difference E=RT-ST, according to temperature difference E, control the state of compressor 101, cross valve 105 and throttling arrangement a104, throttling arrangement b106, make air-conditioner be operated in refrigerated dehumidification pattern, hot dehumidification mode or heat under dehumidification mode again.In addition, control module receives the timing of timing unit, when air-conditioner switches to another kind of dehumidification mode from a kind of dehumidification mode, need at least to guarantee its under a kind of dehumidification mode running time t.
The refrigerant loop is specifically shown in Figure 2, comprises the compressor 101, cross valve 105, outdoor heat converter 102, throttling arrangement a104, indoor the first heat exchanger 103a, throttling arrangement b106 and indoor the second heat exchanger 103b that by refrigeration pipe, join.
Under the refrigerated dehumidification pattern, control module is controlled cross valve 105 power down, and throttling is carried out in throttling arrangement a104 action, and throttling arrangement b106 is open, does not carry out throttling.The duty of air-conditioner is: compressor 101 starts, the high temperature and high pressure gas of discharging enters outdoor heat exchanger 102 by cross valve 105, cold-producing medium in outdoor heat exchanger 102 by under the effect of condensation fan, carrying out condensation, the refrigerant liquid of condensed relatively high-temperature is through the reducing pressure by regulating flow effect of throttling arrangement a104, cold-producing medium become low-temp low-pressure liquid enter indoor First Heat Exchanger 103a, indoor the second heat exchanger 103b absorb heat the evaporation after, get back to compressor 101, reached the purpose of refrigerated dehumidification.
Under hot dehumidification mode, control module is controlled cross valve 105 power down again, and throttling arrangement a104 opens and do not carry out throttling, and throttling is carried out in throttling arrangement b106 action.The duty of air-conditioner is: compressor 101 starts, the high temperature and high pressure gas of discharging enters outdoor heat exchanger 102 by cross valve 105, cold-producing medium in outdoor heat exchanger 102 by under the effect of condensation fan, carrying out condensation, the refrigerant liquid of condensed relatively high-temperature enters indoor First Heat Exchanger 103a, First Heat Exchanger 103a works as condenser, in the further condensation of First Heat Exchanger 103a, condensed refrigerant liquid is through the reducing pressure by regulating flow effect of throttling arrangement b106, cold-producing medium becomes low-temp low-pressure liquid and enters indoor the second heat exchanger 103b, indoor the second heat exchanger 103b works as evaporimeter, indoor the second heat exchanger 103b absorbs heat after evaporation, get back to compressor 101, like this, the room air sucked by indoor apparatus of air conditioner is subject to dehumidifying and the effect of hot merit energy again, can prevent that indoor temperature from descending.Reached the purpose of heat dehumidifying again.
Heat under dehumidification mode, control module is controlled cross valve 105 and is powered on, and throttling is carried out in throttling arrangement a104 action, and throttling arrangement b106 is open, does not carry out throttling.The duty of air-conditioner is: compressor 101 starts, the high temperature and high pressure gas of discharging enters indoor the second heat exchanger 103b, indoor First Heat Exchanger 103a by cross valve 105, cold-producing medium carries out condensation under by the effect of condensation fan in indoor the second heat exchanger 103b, indoor First Heat Exchanger 103a, the refrigerant liquid of condensed relatively high-temperature is by throttling arrangement 104 reducing pressure by regulating flow effects, cold-producing medium become low-temp low-pressure liquid enter outdoor heat exchanger 102 absorb heat the evaporation after, get back to compressor 101, reached the purpose that heats dehumidifying.
The temperature sensor of temperature detecting unit detects indoor temperature RT, after signal is processed, indoor temperature RT is transferred to control module.
Timing unit carries out timing to the residing dehumidification mode of air-conditioner, only has when timing reaches preset time t, and air-conditioner can switch to another kind of dehumidification mode from a kind of dehumidification mode, and the timing unit zero clearing, restart timing simultaneously.
Based on the design of above-mentioned type constant temperature dehumidifying air conditioner, the present embodiment has also proposed a kind of constant temperature dehumidification method of air-conditioner, and described method comprises the steps:
S1, air-conditioner start, and enter dehumidification mode.
S2, air-conditioner control module receive the design temperature ST of remote controller.
S3, temperature detecting unit detect indoor temperature RT, and indoor temperature RT are transferred to control module.
S4, control module calculate E=RT-ST.
If S5 is E<and-3 ℃ the time, enter step S6, otherwise enter step S8 or S11.
S6, the air-conditioner operation heats dehumidification mode;
Heating under dehumidification mode, control module is controlled cross valve 105 and is powered on, and throttling is carried out in throttling arrangement a104 action, and throttling arrangement b106 is open, does not carry out throttling.The duty of air-conditioner is: compressor 101 starts, the high temperature and high pressure gas of discharging enters indoor the second heat exchanger 103b, indoor First Heat Exchanger 103a by cross valve 105, cold-producing medium carries out condensation under by the effect of condensation fan in indoor the second heat exchanger 103b, indoor First Heat Exchanger 103a, the refrigerant liquid of condensed relatively high-temperature is by throttling arrangement 104 reducing pressure by regulating flow effects, cold-producing medium become low-temp low-pressure liquid enter outdoor heat exchanger 102 absorb heat the evaporation after, get back to compressor 101, reached the purpose that heats dehumidifying.
S7, timing unit carry out timing to the air-conditioner present mode of operation, judge whether to be greater than 10min, if not, enter step S6; If enter step S3.
If, during S8-3 ℃≤E≤3 ℃, enter step S9, otherwise enter step S5 or S11.
S9, air-conditioner operation be hot dehumidification mode again;
Under hot dehumidification mode again, control module is controlled cross valve 105 power down, and throttling arrangement a104 is open does not carry out throttling, and throttling is carried out in throttling arrangement b106 action.The duty of air-conditioner is: compressor 101 starts, the high temperature and high pressure gas of discharging enters outdoor heat exchanger 102 by cross valve 105, cold-producing medium in outdoor heat exchanger 102 by under the effect of condensation fan, carrying out condensation, pass through the laggard indoor First Heat Exchanger 103a of entering of open throttling arrangement a104, in the further condensation of First Heat Exchanger 103a, condensed refrigerant liquid is through the further reducing pressure by regulating flow effect of throttling arrangement b106, cold-producing medium becomes low-temp low-pressure liquid and enters indoor the second heat exchanger 103b, indoor the second heat exchanger 103b works as evaporimeter, indoor the second heat exchanger 103b absorbs heat after evaporation, get back to compressor 101, reached the purpose of heat dehumidifying again.Like this, the room air sucked by indoor apparatus of air conditioner is subject to dehumidifying and the effect of hot merit energy again, can prevent that indoor temperature from descending.
S10, timing unit carry out timing to the air-conditioner present mode of operation, judge whether to be greater than 10min, if not, enter step S9; If enter step S3.
If S11 is E>and 3 ℃ the time, enter step S12, otherwise enter step S5 or S8.
S12, air-conditioner running refrigerating dehumidification mode;
Under the refrigerated dehumidification pattern, control module is controlled cross valve 105 power down, and throttling is carried out in throttling arrangement a104 action, and throttling arrangement b106 is open, does not carry out throttling.The duty of air-conditioner is: compressor 101 starts, the high temperature and high pressure gas of discharging enters outdoor heat exchanger 102 by cross valve 105, cold-producing medium in outdoor heat exchanger 102 by under the effect of condensation fan, carrying out condensation, the refrigerant liquid of condensed relatively high-temperature is through the reducing pressure by regulating flow effect of throttling arrangement a104, cold-producing medium become low-temp low-pressure liquid enter indoor First Heat Exchanger 103a, indoor the second heat exchanger 103b absorb heat the evaporation after, get back to compressor 101, reached the purpose of refrigerated dehumidification.
S13, timing unit carry out timing to the air-conditioner present mode of operation, judge whether to be greater than 10min, if not, enter step S12; If enter step S3.
In the present embodiment, when air-conditioner switched to another kind of dehumidification mode from a kind of dehumidification mode, the timing unit zero clearing, restarted timing.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. type constant temperature dehumidifying air conditioner, comprise the compressor, cross valve, outdoor heat converter, throttling arrangement a, b and the indoor heat converter that by refrigeration pipe, join, it is characterized in that: described indoor heat converter is divided into the first heat exchanger and the second heat exchanger by throttling arrangement b, air-conditioner is according to the difference of indoor temperature and design temperature, controls air-conditioner in the refrigerated dehumidification pattern, hot dehumidification mode or heat under dehumidification mode switches again by the state that changes described compressor, cross valve and throttling arrangement a, b.
2. type constant temperature dehumidifying air conditioner according to claim 1, it is characterized in that: described air-conditioner also comprises control module, is electrically connected to described compressor, cross valve and throttling arrangement a, b; Under described hot dehumidification mode again, control described throttling arrangement b action, carry out throttling, in described refrigerated dehumidification pattern with heat under dehumidification mode, controls described throttling arrangement b opening, do not carry out throttling.
3. type constant temperature dehumidifying air conditioner according to claim 2 is characterized in that: under described hot dehumidification mode again, in described refrigeration pipe, the refrigerant flow direction is identical with the refrigerated dehumidification pattern.
4. type constant temperature dehumidifying air conditioner according to claim 2, it is characterized in that: described air-conditioner comprises the temperature detecting unit joined with control module, described temperature detecting unit detects indoor temperature RT, and indoor temperature RT is transferred to control module.
5. type constant temperature dehumidifying air conditioner according to claim 2, it is characterized in that: described air-conditioner comprises the timing unit joined with control module, described timing unit is for air-conditioner dehumidification mode of living in is carried out to timing, and clocking value is transferred to control module.
6. one kind according to the described air-conditioner constant temperature dehumidification of claim 1-5 method, and it is characterized in that: described method comprises the steps:
(1) air-conditioner detects indoor temperature RT, and the indoor temperature RT and the design temperature ST that detect are compared, and obtains temperature difference E;
(2) the temperature difference E obtained according to step (1), divide into refrigerated dehumidification pattern, hot dehumidification mode and heat dehumidification mode again by air conditioner dehumidification mode;
(3) when air-conditioner is in hot dehumidification mode again, control module is controlled throttling arrangement b action, carries out throttling; When air-conditioner is in the refrigerated dehumidification pattern and heats under dehumidification mode, it is open that control module is controlled throttling arrangement b, do not carry out throttling.
7. air-conditioner constant temperature dehumidification method according to claim 5 is characterized in that:
When described temperature difference E>T, air-conditioner running refrigerating dehumidification mode;
When described temperature difference E<-during T, the air-conditioner operation heats dehumidification mode;
When described temperature difference-T≤E≤T, the air-conditioner operation is hot dehumidification mode again.
8. according to the described air-conditioner constant temperature dehumidification of claim 6 or 7 method, it is characterized in that: under described hot dehumidification mode again, in the air-conditioner refrigeration pipe, the refrigerant flow direction is identical with the refrigerated dehumidification pattern.
9. according to the described air-conditioner constant temperature dehumidification of claim 6 or 7 method, it is characterized in that: if when described air-conditioner switches to another kind of dehumidification mode from a kind of dehumidification mode, need at least to guarantee its under a kind of dehumidification mode running time t.
10. air-conditioner constant temperature dehumidification method according to claim 9, it is characterized in that: when described air-conditioner switched to another kind of dehumidification mode, described timing unit zero clearing, restarted timing.
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