CN104251533A - Heat recovery type air conditioning unit and composite operation mode control method thereof - Google Patents
Heat recovery type air conditioning unit and composite operation mode control method thereof Download PDFInfo
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- CN104251533A CN104251533A CN201310261356.6A CN201310261356A CN104251533A CN 104251533 A CN104251533 A CN 104251533A CN 201310261356 A CN201310261356 A CN 201310261356A CN 104251533 A CN104251533 A CN 104251533A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 59
- 238000011084 recovery Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002131 composite material Substances 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 171
- 238000010438 heat treatment Methods 0.000 claims description 77
- 238000005057 refrigeration Methods 0.000 claims description 55
- 239000008236 heating water Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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Abstract
The application discloses a composite operation mode control method of a heat recovery type air conditioning unit, which comprises the steps of setting a priority operation state to determine a state switching range; detecting water temperature values of an air conditioner side and a hot water side of the heat recovery type air conditioning unit; determining the on-off requirements of an air conditioner side and a hot water side according to preset on-off conditions and the detected water temperature value; and switching the running state of the heat recovery type air conditioning unit within the state switching range according to the determined on-off requirement. The method and the device have the advantages that the air conditioning unit always meets the requirement of the prior state set by the user no matter which running state the air conditioning unit runs, and the air conditioning unit is shut down when the application requirement corresponding to the prior state completely meets the requirement, so that the setting and switching of the composite running mode of the air conditioning unit are humanized and reasonable, and the waste of energy is reduced; and the automatic switching of the running state is realized, and the complexity of switching is reduced. The application also discloses a heat recovery type air conditioning unit applying the control method.
Description
Technical field
The application relates to air conditioner controlling technology field, particularly relates to a kind of recovery type heat air-conditioner set and combined running mode control method thereof.
Background technology
The common operational mode of recovery type heat air-conditioner set has five kinds, comprises three kinds of single-modes (i.e. refrigeration mode, heating mode and water heating pattern) and two kinds of composite modes (i.e. refrigeration and water heating pattern and heat and water heating pattern).Air-conditioner set, under composite mode, there will be multiple running status according to load variations.Existing air-conditioner set can only be selected to run according to the startup-shutdown demand of air-conditioning side and hot water side in multiple running status, and cannot in conjunction with the actual needs selective operation of user.
Such as under refrigeration and water heating pattern, in air-conditioner set actual moving process, there will be following three kinds of running statuses according to load variations: refrigerating state, water heating state, refrigeration and water heating state.Existing air-conditioner set can only select running status according to refrigeration startup-shutdown demand and water heating startup-shutdown demand.But during practical application; may due to the reason of weather high temperature; cause user's initial stage for the demand of the demand of freezing higher than water heating; and according to existing control method, air-conditioner set according to startup-shutdown demand modeling current operating conditions, then can only may cause air-conditioner set to be in water heating state and run always; and do not have precedence over refrigerating state operation with the demand meeting user; therefore, the control method of prior art lacks flexibility, really cannot meet the demand of user.
Summary of the invention
In view of this, the application's object is to provide a kind of recovery type heat air-conditioner set and combined running mode control method thereof, dumb to solve existing control method, really cannot meet the problem of the demand of user.
For achieving the above object, the application provides following technical scheme:
A kind of recovery type heat air-conditioner set combined running mode control method, comprising:
Preferential running status is set, to determine that state switches scope;
Detect the air-conditioning side of described recovery type heat air-conditioner set and the water temperature value of hot water side;
According to the switching on and shutting down condition of the described air-conditioning side of presetting and hot water side and described in the water temperature value that detects, determine the switching on and shutting down demand of air-conditioning side and hot water side;
Within the scope of described state switching, the running status of described recovery type heat air-conditioner set is switched according to the described switching on and shutting down demand determined.
Preferably, described switching on and shutting down condition comprises air-conditioning side turn-on temperature setting value T
1, air-conditioning side shutoff temperature setting value T
2, hot water side turn-on temperature setting value TR
1with hot water side shutoff temperature setting value TR
2; Wherein T
1> T
2, TR
1<TR
2;
The water temperature value of described detection air-conditioning side and hot water side comprises one or more that detect in following water temperature value: air-conditioning side inflow temperature value T
in, air-conditioning side leaving water temperature value T
out, hot water side inflow temperature value TR
in, hot water side leaving water temperature value TR
out, heating water tank temperature value T
tank.
Preferably, the water temperature value detected described in described basis and described switching on and shutting down condition, determine the switching on and shutting down demand of air-conditioning side and hot water side, concrete grammar is:
If described hot water side inflow temperature value and heating water tank temperature value are all not more than described hot water side turn-on temperature setting value, then determine that hot water side has water heating start demand;
If described hot water side leaving water temperature value is not less than hot water side shutoff temperature setting value, or described heating water tank temperature value is not less than hot water side shutoff temperature setting value, then determine that hot water side has water heating shutdown demand;
If described air-conditioning side inflow temperature value is not less than described air-conditioning side turn-on temperature setting value, then determine that there is refrigeration start demand air-conditioning side;
If air-conditioning side leaving water temperature value is not more than described air-conditioning side shutoff temperature setting value, then determine that there is refrigeration shutdown demand air-conditioning side.
Preferably, described combined running pattern is refrigeration and water heating pattern, and described refrigeration and water heating pattern comprise refrigerating state, water heating state and refrigeration and water heating state.
Preferably, described preferential running status is set, to determine that state switches scope, comprises:
Arranging described preferential running status is refrigerating state, determines that described state switches scope and is refrigerating state and refrigeration and water heating state;
Arranging described preferential running status is water heating state, determines that described state switches scope and is water heating state and refrigeration and water heating state.
Preferably, when described preferential running status is refrigerating state, the described running status switching described recovery type heat air-conditioner set according to the described switching on and shutting down demand determined within the scope of described state switching, comprising:
When the described switching on and shutting down demand determined comprises refrigeration start demand and water heating shutdown demand, the running status of described recovery type heat air-conditioner set is switched to refrigerating state;
When the described switching on and shutting down demand determined comprises refrigeration start demand and water heating start demand simultaneously, the running status of described recovery type heat air-conditioner set is switched to refrigeration and water heating state;
When the described switching on and shutting down demand determined comprises refrigeration shutdown demand, described recovery type heat air-conditioner set is shut down.
Preferably, when preferential running status is water heating state, the described running status switching described recovery type heat air-conditioner set according to the described switching on and shutting down demand determined within the scope of described state switching, comprising:
When the described switching on and shutting down demand determined comprises water heating start demand and refrigeration shutdown demand, the running status of described recovery type heat air-conditioner set is switched to water heating state;
When the described switching on and shutting down demand determined comprises refrigeration start demand and water heating start demand simultaneously, the running status of described recovery type heat air-conditioner set is switched to refrigeration and water heating state;
When the described switching on and shutting down demand determined comprises water heating shutdown demand, described recovery type heat air-conditioner set is shut down.
Preferably, described switching on and shutting down condition also comprises hot water temperature setting value TR, hot water side turn-on temperature error set point △ T1 and hot water side shutoff temperature error set point △ T2; Wherein, TR
1=TR-△ T1, TR
2=TR+ △ T2.
A kind of recovery type heat air-conditioner set, according to the switching of any one combined running mode control method controlling run state above-mentioned.
As can be seen from above-mentioned technical scheme, the application by arranging preferential running status under combined running pattern, automatically can switch between two kinds of running statuses according to the actual demand of user under combined running pattern, achieve and no matter run which kind of running status, unit meets the demand of the priority status of user's setting all the time, thus make the setting of air-conditioner set combined running pattern and switch hommization, possess reasonability, decrease the waste of the energy; Meanwhile, without the need to air-conditioner set is shut down during switching state, achieve the automatic switchover of running status, and decrease the number of changeable running status, reduce the complexity of switching.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The recovery type heat air-conditioner set combined running mode control method flow chart that Fig. 1 provides for the embodiment of the present application one;
The main flow chart of the recovery type heat air-conditioner set combined running mode control method that Fig. 2 (a) provides for the embodiment of the present application two;
The control flow chart that in the recovery type heat air-conditioner set combined running mode control method that Fig. 2 (b) provides for the embodiment of the present application two, refrigerating state is preferential;
The control flow chart of water heating state prior in the recovery type heat air-conditioner set combined running mode control method that Fig. 2 (c) provides for the embodiment of the present application two.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
The embodiment of the present application discloses a kind of recovery type heat air-conditioner set combined running mode control method, dumb to solve existing control method, really cannot meet the problem of the demand of user.
With reference to Fig. 1, the recovery type heat air-conditioner set combined running mode control method that the embodiment of the present application one provides, comprises the steps:
S101: arrange preferential running status, to determine that state switches scope;
S102: detect the air-conditioning side of described recovery type heat air-conditioner set and the water temperature value of hot water side;
S103: according to switching on and shutting down condition and the water temperature value that detects of the described air-conditioning side of presetting and hot water side, determine the switching on and shutting down demand of air-conditioning side and hot water side;
S104: the running status switching described recovery type heat air-conditioner set according to the described switching on and shutting down demand determined within the scope of described state switching.
From said method step, the embodiment of the present application switches scope by arranging preferential running status determination state, preferentially meets the demand of user, makes the setting of air-conditioner set combined running pattern and switch hommization, possess reasonability, decreasing the waste of the energy; Meanwhile, without the need to air-conditioner set is shut down during switching state, achieve the automatic switchover of running status, and decrease the number of changeable running status, reduce the complexity of switching.
With reference to Fig. 2 (a) ~ Fig. 2 (c), the embodiment of the present application two provides another kind of recovery type heat air-conditioner set combined running mode control method, comprises the steps:
S210: arrange preferential running status, to determine that state switches scope;
When described combined running pattern is for refrigeration and water heating pattern, the possible running status of air-conditioner set comprises refrigerating state, water heating state and refrigeration and water heating state.Above-mentioned preferential running status can be set to refrigerating state or water heating state.
If current application situation requires that air-conditioner set preferentially meets refrigeration demand (time as higher in summer environment temperature), can arrange preferential running status for refrigeration priority status, corresponding state switches scope and comprises refrigerating state and refrigeration and water heating state.
If current application situation requires that air-conditioner set preferentially meets water heating demand (time as larger in hot water use amount), can arrange preferential running status is water heating priority status; Corresponding state switches scope and comprises water heating state and refrigeration and water heating state.
Seen from the above description, according to practical application request, preferential running status is set, to determine that state switches scope and comprises following two kinds of situations:
1) described preferential running status is set for refrigeration priority status, determines that described state switches scope and is refrigerating state and refrigeration and water heating state;
2) arranging described preferential running status is water heating priority status, determines that described state switches scope and is water heating state and refrigeration and water heating state.
When being applied to air-conditioner set, corresponding human-computer interaction interface can be set up in the control system of air-conditioner set, make user that preferential running status under combined running pattern can be set according to current application demand.
S220: the water temperature value detecting air-conditioning side and hot water side respectively;
Concrete, need the water temperature value detected to comprise: air-conditioning side inflow temperature value T
in, air-conditioning side leaving water temperature value T
out, hot water side inflow temperature value TR
in, hot water side leaving water temperature value TR
out, heating water tank temperature value T
tank.General, T
in> T
out, TR
in<TR
out.
S230: according to the switching on and shutting down condition of the described air-conditioning side of presetting and hot water side and described in the water temperature value that detects, determine the switching on and shutting down demand of air-conditioning side and hot water side;
Concrete, above-mentioned switching on and shutting down condition comprises following setting value: air-conditioning side turn-on temperature setting value T
1, air-conditioning side shutoff temperature setting value T
2, hot water side turn-on temperature setting value TR
1with hot water side shutoff temperature setting value TR
2; Wherein T
1> T
2, TR
1<TR
2.
As hot water side inflow temperature value TR
inwith heating water tank temperature value T
tankall be not more than hot water side turn-on temperature setting value TR
1(i.e. TR
in≤ TR
1and T
tank≤ TR
1) time, determine that hot water side has water heating start demand;
As hot water side leaving water temperature value TR
outbe not less than hot water side shutoff temperature setting value TR
2, or heating water tank temperature value T
tankbe not less than hot water side shutoff temperature setting value TR
2(i.e. TR
out>=TR
2or T
tank>=TR
2) time, then determine that hot water side has water heating shutdown demand;
As air-conditioning side inflow temperature value T
inbe not less than air-conditioning side turn-on temperature setting value T
1(i.e. T
in>=T
1) time, determine that there is refrigeration start demand air-conditioning side;
As air-conditioning side leaving water temperature value T
outbe not more than air-conditioning side shutoff temperature setting value T
2(i.e. T
out≤ T
2) time, determine that there is refrigeration shutdown demand air-conditioning side.
S240: judge whether preferential running status is refrigeration priority status, if so, then performs step S241, otherwise performs step S250;
S241: whether have refrigeration start demand and water heating shutdown demand in the switching on and shutting down demand determined in determining step S230 simultaneously, if so, then perform step S242, otherwise perform step S243;
S242: the running status arranging air-conditioner set is refrigerating state, this controls to terminate, and returns step S220;
S243: whether have refrigeration start demand and water heating start demand in the switching on and shutting down demand determined in determining step S230 simultaneously, if so, then perform step S244, otherwise perform step S245;
S244: arrange the running status of air-conditioner set for freezing and water heating state, this controls to terminate, and returns step S220;
S245: if there is refrigeration shutdown demand in the switching on and shutting down demand determined in step S230, then air-conditioner set shut down and return step S220, otherwise directly returning step S220;
S250: whether have water heating demand and refrigeration shutdown demand in the switching on and shutting down demand determined in determining step S230 simultaneously, if so, then perform step S251, otherwise perform step S252;
S251: the running status arranging air-conditioner set is water heating state, this controls to terminate, and returns step S220;
S252: whether have refrigeration start demand and water heating start demand in the switching on and shutting down demand determined in determining step S230 simultaneously, if so, then perform step S253, otherwise perform step S254;
S253: arrange the running status of air-conditioner set for freezing and water heating state, this controls to terminate, and returns step S220;
S254: if there is water heating shutdown demand in the switching on and shutting down demand determined in step S230, then air-conditioner set shut down and return step S220, otherwise directly returning step S220.
From said method step, preferential running status, according to practical situations, is set as refrigeration priority status or water heating priority status by the embodiment of the present application, thus determines that corresponding state switches scope; And then according to the water temperature value detected and the switching on and shutting down condition determination air-conditioning side of presetting and the switching on and shutting down demand of hot water side; and a kind of current operating conditions as air-conditioner set corresponding with this switching on and shutting down demand in the selected above-mentioned state switching scope determined; if application demand corresponding to first running status is shutdown demand, then air-conditioner set is shut down.Such as; under refrigeration priority status; if air-conditioner set has refrigeration start demand and water heating shutdown demand; then unit operation refrigerating state, if air-conditioner set has refrigeration start demand and water heating start demand, then unit operation freezes and water heating state; if air-conditioner set has refrigeration shutdown demand and water heating start demand; then compressor emergency shutdown, as long as during need satisfaction condition namely corresponding to priority status, air-conditioner set shuts down.Therefore, the embodiment of the present application only need arrange preferential running status under combined running pattern, automatically can switch between two kinds of running statuses according to the actual demand of user under combined running pattern, achieve and no matter run which kind of running status, unit meets the demand of priority status of user's setting all the time, thus makes the setting of air-conditioner set combined running pattern and switch hommization, possess reasonability; The air-conditioning compressor emergency shutdown when the application demand that priority status is corresponding meets completely, decreases the waste of the energy; Meanwhile, without the need to air-conditioner set is shut down during switching state, achieve the automatic switchover of running status, and reduce the complexity of switching.
For improving the degree of accuracy judging switching on and shutting down demand further, for above-mentioned, within certain timing period (as 5 seconds or 10 seconds), the switching on and shutting down demand homogeneous phase of the air-conditioner set that step S230 determines simultaneously, just perform subsequent step, if in this time period, the switching on and shutting down demand of the air-conditioner set that step S230 determines is not quite similar, then restart timing and within the new timing period, carry out redefining the switching on and shutting down demand of air-conditioner set.
In addition, in above-described embodiment, switching on and shutting down condition also can comprise following setting value: hot water temperature setting value TR, hot water side turn-on temperature error set point △ T1 and hot water side shutoff temperature error set point △ T2.This three and hot water side turn-on temperature setting value TR
1with hot water side shutoff temperature setting value TR
2pass be: TR
1=TR-△ T1, TR
2=TR+ △ T2.Therefore, when switching on and shutting down condition is set, the value by TR, △ T1 and △ T2 directly can be set, then calculates TR
1and TR
2, also directly TR can be set
1and TR
2value.
Accordingly, the embodiment of the present application additionally provides a kind of recovery type heat air-conditioner set, the method of this recovery type heat air-conditioner set according to embodiment one or embodiment two controls the automatic switchover of the running status under combined running pattern, preferential running status under combined running pattern only need be set, automatically can switch between two kinds of running statuses according to the actual demand of user under combined running pattern, achieve and no matter be in which kind of running status, unit meets the demand of the priority status of user's setting all the time, thus make the setting of air-conditioner set combined running pattern and switch hommization, possesses reasonability, the air-conditioning compressor emergency shutdown when the application demand that priority status is corresponding meets completely, decreases the waste of the energy, and achieve the automatic switchover of running status, reduce the complexity of switching.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, described program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a recovery type heat air-conditioner set combined running mode control method, is characterized in that, comprising:
Under combined running pattern, preferential running status is set, to determine that state switches scope;
Detect the air-conditioning side of described recovery type heat air-conditioner set and the water temperature value of hot water side;
According to the switching on and shutting down condition of the described air-conditioning side of presetting and hot water side and described in the water temperature value that detects, determine the switching on and shutting down demand of air-conditioning side and hot water side;
Within the scope of described state switching, the running status of described recovery type heat air-conditioner set is switched according to the described switching on and shutting down demand determined.
2. method according to claim 1, is characterized in that, described switching on and shutting down condition comprises air-conditioning side turn-on temperature setting value T
1, air-conditioning side shutoff temperature setting value T
2, hot water side turn-on temperature setting value TR
1with hot water side shutoff temperature setting value TR
2; Wherein T
1> T
2, TR
1<TR
2;
The water temperature value of described detection air-conditioning side and hot water side comprises one or more that detect in following water temperature value: air-conditioning side inflow temperature value T
in, air-conditioning side leaving water temperature value T
out, hot water side inflow temperature value TR
in, hot water side leaving water temperature value TR
out, heating water tank temperature value T
tank.
3. method according to claim 2, is characterized in that, the water temperature value detected described in described basis and described switching on and shutting down condition, and determine the switching on and shutting down demand of air-conditioning side and hot water side, concrete grammar is:
If described hot water side inflow temperature value and heating water tank temperature value are all not more than described hot water side turn-on temperature setting value, then determine that hot water side has water heating start demand;
If described hot water side leaving water temperature value is not less than hot water side shutoff temperature setting value, or described heating water tank temperature value is not less than hot water side shutoff temperature setting value, then determine that hot water side has water heating shutdown demand;
If described air-conditioning side inflow temperature value is not less than described air-conditioning side turn-on temperature setting value, then determine that there is refrigeration start demand air-conditioning side;
If air-conditioning side leaving water temperature value is not more than described air-conditioning side shutoff temperature setting value, then determine that there is refrigeration shutdown demand air-conditioning side.
4. the method according to any one of claims 1 to 3, it is characterized in that, described combined running pattern is refrigeration and water heating pattern, under described refrigeration and water heating pattern, the running status of described recovery type heat air-conditioner set comprises refrigerating state, water heating state and refrigeration and water heating state.
5. method according to claim 4, is characterized in that, describedly arranges preferential running status, to determine that state switches scope, comprising:
Arranging described preferential running status is refrigerating state, determines that described state switches scope and is refrigerating state and refrigeration and water heating state;
Arranging described preferential running status is water heating state, determines that described state switches scope and is water heating state and refrigeration and water heating state.
6. method according to claim 5, is characterized in that, when described preferential running status is refrigerating state, the described running status switching described recovery type heat air-conditioner set according to the described switching on and shutting down demand determined within the scope of described state switching, comprising:
When the described switching on and shutting down demand determined comprises refrigeration start demand and water heating shutdown demand, the running status of described recovery type heat air-conditioner set is switched to refrigerating state;
When the described switching on and shutting down demand determined comprises refrigeration start demand and water heating start demand simultaneously, the running status of described recovery type heat air-conditioner set is switched to refrigeration and water heating state;
When the described switching on and shutting down demand determined comprises refrigeration shutdown demand, described recovery type heat air-conditioner set is shut down.
7. method according to claim 5, is characterized in that, when described preferential running status is water heating state, the described running status switching described recovery type heat air-conditioner set according to the described switching on and shutting down demand determined within the scope of described state switching, comprising:
When the described switching on and shutting down demand determined comprises water heating start demand and refrigeration shutdown demand, the running status of described recovery type heat air-conditioner set is switched to water heating state;
When the described switching on and shutting down demand determined comprises refrigeration start demand and water heating start demand simultaneously, the running status of described recovery type heat air-conditioner set is switched to refrigeration and water heating state;
When the described switching on and shutting down demand determined comprises water heating shutdown demand, described recovery type heat air-conditioner set is shut down.
8. method according to claim 2, is characterized in that, described switching on and shutting down condition also comprises hot water temperature setting value TR, hot water side turn-on temperature error set point △ T1 and hot water side shutoff temperature error set point △ T2; Wherein, TR
1=TR-△ T1, TR
2=TR+ △ T2.
9. a recovery type heat air-conditioner set, is characterized in that, according to the switching of the combined running mode control method controlling run state as described in any one of claim 1 ~ 8.
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|---|---|---|---|
| CN201310261356.6A CN104251533B (en) | 2013-06-26 | 2013-06-26 | Heat recovery type air conditioning unit and composite operation mode control method thereof |
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| CN201310261356.6A CN104251533B (en) | 2013-06-26 | 2013-06-26 | Heat recovery type air conditioning unit and composite operation mode control method thereof |
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| CN111692637A (en) * | 2020-06-18 | 2020-09-22 | 广东美的制冷设备有限公司 | Control method, control device, air conditioning system, and computer-readable storage medium |
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| CN101936590A (en) * | 2009-06-30 | 2011-01-05 | 林荣恒 | Guarantee control method for air conditioning water heater |
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| CN102095294B (en) * | 2009-12-11 | 2012-07-04 | 珠海格力电器股份有限公司 | Heat recovery module unit, air conditioning unit and control method |
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| CN104792058A (en) * | 2015-04-28 | 2015-07-22 | 广东美的暖通设备有限公司 | Three-tube heating recycling air-conditioning system control method and air-conditioning system |
| CN106322823A (en) * | 2015-06-23 | 2017-01-11 | 约克广州空调冷冻设备有限公司 | Control method of multifunctional air conditioner water heater unit and controller of multifunctional air conditioner water heater unit |
| CN109974254A (en) * | 2019-03-21 | 2019-07-05 | 陈碧贤 | Air Conditioning energy water heater runs program integrated control and hot water method for controlling priority |
| CN113124531A (en) * | 2019-12-30 | 2021-07-16 | 青岛海尔空调电子有限公司 | Control method for automatically switching operation modes of water chilling unit |
| CN111426100A (en) * | 2020-04-20 | 2020-07-17 | 珠海格力电器股份有限公司 | Automatic refrigeration heat recovery control method and device and multi-split complete machine equipment |
| CN111692637A (en) * | 2020-06-18 | 2020-09-22 | 广东美的制冷设备有限公司 | Control method, control device, air conditioning system, and computer-readable storage medium |
| WO2021253987A1 (en) * | 2020-06-18 | 2021-12-23 | 广东美的制冷设备有限公司 | Control method, control device, air conditioning system, and computer readable storage medium |
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