CN202853062U - Multi-split air conditioning system - Google Patents
Multi-split air conditioning system Download PDFInfo
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- CN202853062U CN202853062U CN 201220549052 CN201220549052U CN202853062U CN 202853062 U CN202853062 U CN 202853062U CN 201220549052 CN201220549052 CN 201220549052 CN 201220549052 U CN201220549052 U CN 201220549052U CN 202853062 U CN202853062 U CN 202853062U
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Abstract
The utility model provides a multi-split air conditioning system, which comprises an outdoor unit and at least two indoor units, wherein each indoor unit comprises a main control unit, a temperature detection unit, a storage unit, a solenoid valve drive unit and a first communication unit which are respectively connected with the main control unit, the storage unit is used to store corrected different corresponding relations between different temperature differences of indoor environment temperature and user setting temperature and cooling/heating capacity levels, and the main control unit is used to calculate the temperature difference between the indoor environment temperature detected by the temperature detection unit and the user setting temperature received by the first communication unit, and corrects cooling/heating capacity levels of the indoor unit according to the content stored in the storage unit, and controls the solenoid valve drive unit to drive opening of a solenoid valve. The multi-split air conditioning system achieves excellent cooling/heating effect by automatically and dynamically correcting cooling/heating target temperature.
Description
Technical field
The utility model relates to field of air conditioning, relates in particular to a kind of multi-split air conditioner.
Background technology
One drags many air-conditionings to adopt single off-premises station, provides cold/heat to indoor set respectively, as shown in Figure 1, sketches as an example of the one drag two air-conditioning example.In the process of refrigerastion, the compressor in the off-premises station is the gaseous refrigerant of HTHP with the refrigerant compression of gaseous state, through being delivered to the liquid refrigerant that becomes normal temperature high voltage after heat exchanger dispels the heat behind the gas-liquid separator, is dispelled the heat by off-premises station.Enter respectively the first heat exchanger indoor unit and the second heat exchanger indoor unit behind liquid refrigerant process capillary and the filter, after cold-producing medium arrives respectively each heat exchanger indoor unit from capillary, because the pipeline space increases suddenly, pressure reduces, liquid cold-producing medium will gasify, become the cold-producing medium of gaseous state low temperature, thereby absorb a large amount of heats, each heat exchanger indoor unit will turn cold, the fan of each indoor set (not shown) is blown over indoor air from each heat exchanger indoor unit, make each indoor set finish refrigeration.The compressor that the cold-producing medium of gaseous state is got back in the off-premises station continues compression, so circulation.Its refrigerant flow direction is shown in solid arrow among Fig. 1.Wherein, need to prove, enter each heat exchanger indoor unit cold what realize by the magnetic valve aperture that adjusting is arranged at each heat exchanger indoor unit porch.Accordingly, in heating process, cold-producing medium is opposite during with refrigeration at the flow direction of off-premises station heat exchanger and heat exchanger indoor unit, so off-premises station discharging cold wind when heating, indoor set blows out hot blast by fan.Its refrigerant flow direction is shown in dotted arrow among Fig. 1.
At some Code in Hazardous Special Locations, the dining room of non-complete closed formula for example, bar, small-sized market etc.Because free flow indoor, outdoor air, being discharged into that the cold/heat that causes indoor apparatus of air conditioner to discharge is too early is outdoor, can not guarantee that indoor temperature is in more constant state.Therefore, the temperature value that each heat exchanger indoor unit temperature has reached setting will occur, and indoor environment temperature does not reach the temperature value of setting because of gas circulation, causes thus the refrigerating/heating effect relatively poor.Another kind of situation is, in the place of sealing, indoor environment temperature has reached the temperature of setting, owing to be convertible frequency air-conditioner, therefore, the situation of the high frequent shutdown of off-premises station can occur making because reaching design temperature, easily compressor caused loss.
The utility model content
In view of this, main purpose of the present utility model is, a kind of multi-split air conditioner is provided, and to the dynamic correction of refrigerating/heating target temperature, realizes good refrigerating/heating effect by automatically.
Multi-split air conditioner provided by the utility model, comprise an off-premises station and at least two indoor sets, it is characterized in that each indoor set comprises: main control unit, and the temperature detecting unit that is connected with main control unit respectively, memory cell, solenoid-driven unit and the first communication unit
Described memory cell is used for the different temperature difference of storage indoor environment temperature and user's design temperature and the different corresponding relations of refrigerating/heating ability grade correction;
Described main control unit is used for the temperature difference of user's design temperature that indoor environment temperature that the accounting temperature detecting unit detects and the first communication unit receive, the content correction indoor set refrigerating/heating ability grade of storing according to memory cell, and control accordingly the aperture of solenoid-driven unit drives magnetic valve.
By upper, to the dynamic correction of refrigerating/heating target temperature, realize good refrigerating/heating effect by automatically.
Optionally, described the first communication unit also is used for exporting the corresponding evaporation/condensation temperature of described refrigerating/heating ability grade to off-premises station;
Described off-premises station comprises second communication unit and the control module that connects successively, described control module is used for the corresponding evaporation/condensation temperature computation of the refrigerating/heating ability level mean value of each indoor set of receiving according to the second communication unit, and controls accordingly the compressor operating frequency.
By upper, off-premises station can be adjusted compressor frequency according to the mean value of the dynamic correction result of the refrigerating/heating target temperature of all indoor sets, avoids the switching of high frequent.
Optionally, described indoor set also comprises clock unit, is used for providing clock information;
Described main control unit also is connected with clock unit, is used for the time interval according to described clock information adjustment correction indoor set refrigerating/heating ability grade.
By upper, make certain interval of time between the dynamic correction of each refrigerating/heating target temperature by clock information, avoid revising too frequent.
Optionally, described temperature detecting unit comprises the coil temperature detection module that is attached at the coil pipe setting and is installed in the indoor environment temperature detection module at the inboard air inlet of air-conditioning shell place;
Described main control unit also be used for the coil temperature that detects according to the coil temperature detection module and refrigerating/heating ability grade the difference of corresponding evaporation/condensation temperature, control the aperture of solenoid-driven unit drives magnetic valve.
By upper, the Duty ratio control information that main control unit is exported according to the testing result adjustment of refrigerating/heating forms closed-loop adjustment so that the refrigerating/heating temperature stabilization with this.
Optionally, described main control unit comprises that model is the circuit of the chip of M38039FFSP.
Optionally, described solenoid-driven unit comprises that model is the circuit of L9349 chip.
Description of drawings
Fig. 1 is the principle schematic of multi-split air conditioner;
Fig. 2 is the circuit theory schematic diagram of the utility model indoor set;
Fig. 3 is the circuit diagram of the utility model solenoid-driven unit.
The specific embodiment
Below, with reference to accompanying drawing, among the multi-split air conditioner embodiment of the present utility model automatically the technical scheme to the dynamic correction of refrigerating/heating target temperature describe.For ease of describing, describe as an example of the one drag two air-conditioning system example in the present embodiment.As shown in Figure 2, the indoor apparatus of air conditioner circuit comprises: main control unit 23, and the temperature detecting unit 21 that is connected with main control unit 23 respectively, clock unit 22, memory cell 24, solenoid-driven unit 25 and the first communication unit 26.
Temperature detecting unit 21 is for detection of the evaporating temperature T2 of heat exchanger indoor unit coil pipe and indoor environment temperature T1.Temperature detecting unit 21 realizes that by thermistor (NTC, Negative Temperature CoeffiCient) its resistance and temperature are inverse relation, and resistance reduced when namely temperature rose, and temperature resistance rising when reducing.Described temperature detecting unit 21 comprises the coil temperature detection module 211 that is attached at the coil pipe setting and is installed in the indoor environment temperature detection module 212 at the inboard air inlet of air-conditioning shell place.
Main control unit 23 is used for the temperature T 3 output duty cycle control informations that the environment temperature T1 that detects according to temperature detecting unit 21 and user set, the aperture of adjusting magnetic valves by control solenoid-driven unit 25 is so that heat exchanger indoor unit reaches different target evaporation/condensation temperature, thereby reaches the effect of automatically the refrigerating/heating target temperature dynamically being revised.
For instance, when the temperature difference between the temperature T 3 that environment temperature T1 and user set surpasses certain value (for example 3 ℃), main control unit 23 output duty cycle control informations are to solenoid-driven unit 25, increasing the aperture of magnetic valve, and control the first communication unit 26 described target evaporating temperature is sent to off-premises station.The function of described main control unit 23 can be the circuit realization of the chip of M38039FFSP by comprising model.
In addition, coil temperature and target evaporation/condensation temperature that main control unit 23 also is used for the coil temperature detection module 211 that receives is detected compare, and the data of storing according to comparative result inquiry memory cell 24, adjust the Duty ratio control information of exporting, form closed-loop adjustment so that the refrigerating/heating temperature stabilization with this.
Clock unit 22 is used for providing clock information to main control unit 23.In general, need certain interval of time between the dynamic correction of each refrigerating/heating target temperature, better, be 10 minutes blanking time.
Memory cell 24 is used for storing the corresponding relation formula between environment temperature T1 as shown in table 1, refrigerating capacity rank and the target evaporating temperature Teva, and the corresponding relation between heating capacity rank as shown in table 2 and the target condensation temperature Teva ', concrete corresponding relation is as shown in the table.
| Environment temperature T1 | The refrigerating capacity rank | Target evaporating temperature Teva |
| T1＜13 |
1 | Teva=6 |
| 13℃≤T1<25 |
2 | Teva=8℃ |
| 25℃≤T1<32 |
3 | Teva=10℃ |
| 32℃≤T1<39 |
4 | Teva=11℃ |
| 39℃≤T1<47 |
5 | Teva=13℃ |
| T1≥47℃ | 6 | Teva=14℃ |
Table 1
| The heating capacity rank | Target condensation temperature Teva ' |
| 1 | Teva’=41 |
| 2 | Teva’=43 |
| 3 | Teva’=45 |
| 4 | Teva’=46 |
| 5 | Teva’=47℃ |
Table 2
In addition, described memory cell 24 also stores the temperature range Δ T of environment temperature T1 as shown in table 3 and user's design temperature T3 and the corresponding relation of refrigerating capacity level dynamic correction, and environment temperature T1 ' as shown in table 4 and the temperature range Δ T ' of user's design temperature T3 ' and the corresponding relation of heating capacity level dynamic correction.
| Temperature range | The correction of refrigerating capacity level dynamic |
| ΔT≥3℃ | Refrigerating capacity rank downward modulation one- |
| 1℃＜ΔT＜3℃ | Recover initial refrigerating capacity rank |
| -1℃＜ΔT≤1℃ | The refrigerating capacity rank raises one-level |
| ΔT≤-1℃ | The indoor set compressor emergency shutdown |
Table 3
| Temperature range | The correction of heating capacity level dynamic |
| ΔT’≥3℃ | The heating capacity rank raises one- |
| 1℃＜ΔT’＜3℃ | Recover initial heating capacity rank |
| -1℃＜ΔT’≤1℃ | Heating capacity rank downward modulation one-level |
| ΔT’≤-1℃ | The indoor set compressor emergency shutdown |
Table 4
Solenoid-driven unit 25 is used for the aperture according to the control information control magnetic valve of main control unit 23.As shown in Figure 3, the function of solenoid-driven unit 25 can be the circuit realization of L9349 chip by comprising model.The L9349 chip receives supply voltage by the VS port, and IN1～IN4 port receives the Duty ratio control information that main control unit 23 is exported, and the control output end is to drive electromagnetic valve work.
The first communication unit 26 is used for receiving the temperature T 3 that the user sets and sends indoor set to off-premises station and carries out revised target evaporation/condensation temperature.Accordingly, described the first communication unit 26 comprises the infrared receiving circuit for receiving control information, and with the telecommunication circuit that is used for communicating by letter with off-premises station, said apparatus is the common technology of air-conditioning control field, so repeat no more.
Second communication unit (not shown) in the off-premises station receives the revised target evaporation/condensation temperature information that each indoor set sends, the control module of off-premises station (not shown) calculates the mean value of above-mentioned revised target evaporation/condensation temperature information, and adjusts the frequency of compressor and the aperture of the first magnetic valve according to this mean value.
The below describes as an example of air conditioner refrigerating example, for ease of calculating the numerical value round numbers that temperature detecting unit 21 detects in the present embodiment.
Steps A: the temperature difference T of indoor set computing environment temperature T 1 and user's design temperature T3.
Behind the starting of air conditioner, main control unit 23 is according to environment temperature T1 and user's design temperature T3, transfer the corresponding relation between environment temperature T1, refrigerating capacity rank and the target evaporating temperature Teva that stores in the memory cell 24, the output duty cycle control information is adjusted the magnetic valve aperture so that the target evaporating temperature Teva of heat exchanger indoor unit meets the demands to solenoid-driven unit 25 by solenoid-driven unit 25.
When operation of air conditioner 30 minutes and heat exchanger indoor unit reach target evaporating temperature Teva, and after stablizing 10 minutes, main control unit 23 compares the design temperature T3 that environment temperature T1 and user send, and draws temperature difference T.
Step B: indoor set is revised the evaporating temperature of heat exchanger indoor unit automatically according to the scope of temperature difference T.
Wherein, the scope of Δ T comprises among the step B:
When Δ T 〉=3 ℃, the content that main control unit 23 is stored according to memory cell 24, output duty cycle information, are used for refrigerating capacity rank downward modulation one-level to increase the aperture of magnetic valve to solenoid-driven unit 25.For instance, when air-conditioning is started shooting, outdoor environment temperature T1 is 20 ℃, it is 8 ℃ that the corresponding relation formula that the design temperature T3 of User and memory cell 24 are stored draws initial refrigeration target evaporating temperature, ability grade is 2 grades, then after this time ability rating correction, refrigeration target evaporating temperature will be adjusted to 6 ℃, and ability grade is 1 grade.
As 1 ℃＜Δ T＜3 ℃, then represent this error in ideal range, recover initial refrigerating capacity rank.
When-1 ℃＜Δ T≤1 ℃, the refrigerating capacity rank is raised one-level.
When Δ T≤-1 ℃, the indoor set compressor emergency shutdown, namely the indoor set blower fan stops operating, and the magnetic valve of indoor set cuts out fully simultaneously.
Step C: off-premises station carries out revised target evaporating temperature according to each indoor set among the step B and adjusts compressor frequency.
Main control unit 23 controls the first communication unit 26 in each indoor apparatus of air conditioner is sent to off-premises station with revised target temperature information, the control module of off-premises station (not shown) is averaged above-mentioned target temperature information, and adjusts the frequency of compressor and the aperture of the first magnetic valve according to this mean value.
The below describes the makeover process of air-conditioning heating.
Steps A ': the difference DELTA T ' that calculates indoor environment temperature T1 ' and user's design temperature T3 '.
In heating process, heat exchanger indoor unit is take the target condensation temperature as 45 ℃ of startup operations.After operation of air conditioner 30 minutes and heat exchanger indoor unit reached the target condensation temperature and stablize 10 minutes, main control unit 23 compared the design temperature T3 that environment temperature T1 and user send, and draws temperature difference T '.
Step B ': indoor set is revised the condensation temperature of heat exchanger indoor unit automatically according to the scope of temperature difference T '.
Wherein, the scope of Δ T ' comprises among the step B ': when Δ T ' 〉=3 ℃, main control unit 23 controls are raised one-level with the heating capacity rank;
As 1 ℃＜Δ T '＜3 ℃, then represent this error in ideal range, recover initial heating capacity rank.
When-1 ℃＜Δ T '≤1 ℃, main control unit 23 controls are with heating capacity rank downward modulation one-level.
When Δ T '≤-1 ℃, the indoor set compressor emergency shutdown
Step C ': off-premises station carries out revised target condensation temperature according to each indoor set among the step B ' and adjusts compressor frequency.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. multi-split air conditioner, comprise an off-premises station and at least two indoor sets, it is characterized in that, each indoor set comprises: main control unit (23), and the temperature detecting unit (21) that is connected with main control unit (23) respectively, memory cell (24), solenoid-driven unit (25) and the first communication unit (26)
Described memory cell (24) is used for the different temperature difference of storage indoor environment temperature and user's design temperature and the different corresponding relations of refrigerating/heating ability grade correction;
Described main control unit (23) is used for the temperature difference of user's design temperature that indoor environment temperature that accounting temperature detecting unit (21) detects and the first communication unit (26) receive, the content correction indoor set refrigerating/heating ability grade of storing according to memory cell (24), and control accordingly the aperture that solenoid-driven unit (25) drives magnetic valve.
2. multi-split air conditioner according to claim 1 is characterized in that, described the first communication unit (26) also is used for exporting the corresponding evaporation/condensation temperature of described refrigerating/heating ability grade to off-premises station;
Described off-premises station comprises second communication unit and the control module that connects successively, described control module is used for the corresponding evaporation/condensation temperature computation of the refrigerating/heating ability level mean value of each indoor set of receiving according to the second communication unit, and controls accordingly the compressor operating frequency.
3. multi-split air conditioner according to claim 1 is characterized in that, described indoor set also comprises clock unit (22), is used for providing clock information;
Described main control unit (23) also is connected with clock unit (22), is used for the time interval according to described clock information adjustment correction indoor set refrigerating/heating ability grade.
4. multi-split air conditioner according to claim 1, it is characterized in that described temperature detecting unit (21) comprises the coil temperature detection module (211) that is attached at the coil pipe setting and is installed in the indoor environment temperature detection module (212) at the inboard air inlet of air-conditioning shell place;
Described main control unit (23) also is used for the difference of the coil temperature that detects according to coil temperature detection module (211) and the corresponding evaporation/condensation temperature of refrigerating/heating ability grade institute, controls the aperture of solenoid-driven unit (25) driving magnetic valve.
5. multi-split air conditioner according to claim 1 is characterized in that, described main control unit (23) comprises that model is the circuit of the chip of M38039FFSP.
6. multi-split air conditioner according to claim 1 is characterized in that, described solenoid-driven unit (25) comprises that model is the circuit of L9349 chip.
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| CN 201220549052 CN202853062U (en) | 2012-10-24 | 2012-10-24 | Multi-split air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549052 CN202853062U (en) | 2012-10-24 | 2012-10-24 | Multi-split air conditioning system |
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| CN105004006A (en) * | 2015-07-17 | 2015-10-28 | 广东美的暖通设备有限公司 | Method and system for controlling air conditioner |
| CN105091204A (en) * | 2014-05-20 | 2015-11-25 | 广东美的暖通设备有限公司 | Control method of multi-split system |
| CN105571067A (en) * | 2016-01-04 | 2016-05-11 | 青岛海尔空调电子有限公司 | Multiple online control method and system |
| CN106839329A (en) * | 2017-03-03 | 2017-06-13 | 海信（山东）空调有限公司 | It is applied to the temperature-compensating computational methods and device of multi-online indoor machine |
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| CN111059727A (en) * | 2019-12-06 | 2020-04-24 | 徐州顺风阀门有限公司 | Frequency control method for air conditioner compressor |
| CN111503842A (en) * | 2020-04-29 | 2020-08-07 | 四川虹美智能科技有限公司 | Control method, control device, control system and readable medium of multi-split air conditioner |
| WO2020248764A1 (en) * | 2019-06-11 | 2020-12-17 | 青岛海尔空调电子有限公司 | Control method for air conditioning system, air conditioning control system, and air conditioning system |
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| CN105091204A (en) * | 2014-05-20 | 2015-11-25 | 广东美的暖通设备有限公司 | Control method of multi-split system |
| CN105004006B (en) * | 2015-07-17 | 2018-04-03 | 广东美的暖通设备有限公司 | A kind of method and system of airconditioning control |
| CN105004006A (en) * | 2015-07-17 | 2015-10-28 | 广东美的暖通设备有限公司 | Method and system for controlling air conditioner |
| CN105571067A (en) * | 2016-01-04 | 2016-05-11 | 青岛海尔空调电子有限公司 | Multiple online control method and system |
| CN105571067B (en) * | 2016-01-04 | 2019-10-18 | 青岛海尔空调电子有限公司 | A kind of multi-connected machine control method and system |
| CN106839329A (en) * | 2017-03-03 | 2017-06-13 | 海信（山东）空调有限公司 | It is applied to the temperature-compensating computational methods and device of multi-online indoor machine |
| CN106839329B (en) * | 2017-03-03 | 2019-08-02 | 海信（山东）空调有限公司 | Temperature-compensating calculation method and device applied to multi-online indoor machine |
| CN107120809A (en) * | 2017-06-13 | 2017-09-01 | 珠海格力电器股份有限公司 | A kind of control method of air-conditioning system, device and air-conditioning system |
| CN107120809B (en) * | 2017-06-13 | 2019-12-17 | 珠海格力电器股份有限公司 | control method and device of air conditioning system and air conditioning system |
| CN107514743A (en) * | 2017-07-27 | 2017-12-26 | 青岛海尔空调器有限总公司 | A kind of air-conditioner control method, control device and air conditioner |
| CN107514743B (en) * | 2017-07-27 | 2021-03-16 | 青岛海尔空调器有限总公司 | Air conditioner control method and device and air conditioner |
| CN107747793A (en) * | 2017-10-16 | 2018-03-02 | 广东美的暖通设备有限公司 | Transducer air conditioning and its control method, device |
| CN107747793B (en) * | 2017-10-16 | 2020-10-13 | 广东美的暖通设备有限公司 | Variable frequency air conditioner and control method and device thereof |
| WO2020248764A1 (en) * | 2019-06-11 | 2020-12-17 | 青岛海尔空调电子有限公司 | Control method for air conditioning system, air conditioning control system, and air conditioning system |
| CN110454932A (en) * | 2019-07-18 | 2019-11-15 | 宁波奥克斯电气股份有限公司 | A kind of room temperature adjustment control method, device and air conditioner |
| CN111059727A (en) * | 2019-12-06 | 2020-04-24 | 徐州顺风阀门有限公司 | Frequency control method for air conditioner compressor |
| CN111503842A (en) * | 2020-04-29 | 2020-08-07 | 四川虹美智能科技有限公司 | Control method, control device, control system and readable medium of multi-split air conditioner |
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