CN101839536A - Method for air conditioner refrigeration by using fresh air, corresponding refrigeration system and controller - Google Patents
Method for air conditioner refrigeration by using fresh air, corresponding refrigeration system and controller Download PDFInfo
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- CN101839536A CN101839536A CN201010042834A CN201010042834A CN101839536A CN 101839536 A CN101839536 A CN 101839536A CN 201010042834 A CN201010042834 A CN 201010042834A CN 201010042834 A CN201010042834 A CN 201010042834A CN 101839536 A CN101839536 A CN 101839536A
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Abstract
The invention is suitable for the field of air conditioning, in particular for the field of the air conditioning in a machine room (such as a modernized computer room, a switching machine room, a communication machine room and the like) requiring refrigeration in winter, and provides a method for air conditioning refrigeration by using fresh air, a corresponding refrigeration system and a controller. In the embodiment of the invention, when the outdoor temperature is lower than the indoor temperature, outdoor fresh air is used as a cold source, a heat exchanger is used for cooling indoor air, and after cooling the indoor air, the indoor air is sent back into a room but the outdoor fresh air is not introduced into the room. So, the method not only solves the problem of large power consumption caused by the existing refrigeration method adopting a compressor, but also solves the problems that when the fresh air is directly introduced for cooling, the cleanliness of the indoor air cannot be ensured, the supply air temperature cannot be controlled and adjusted, and the supply air temperature is too low in winter and causes moisture condensation which damages equipment in the machine room and causes that indoor humidity is too low.
Description
Technical field
The invention belongs to field of air conditioning, relate in particular to a kind of method of fresh air conditioner refrigeration, corresponding refrigeration system and controller.
Background technology
At present, its compressor of refrigeration air-conditioner general using is with the liquid refrigerant of the cold-producing medium boil down to HTHP of gaseous state, and delivering to then becomes the liquid refrigerant of normal temperature high voltage after condenser (off-premises station) dispels the heat, thereby makes off-premises station blow out hot blast.Arrive capillary then, enter evaporimeter (indoor set), because arriving the evaporimeter rear space from capillary, cold-producing medium increases suddenly, pressure reduces, and liquid cold-producing medium will be vaporized, and becomes the gaseous state refrigerant of low temperature, thereby absorb a large amount of heats, evaporimeter will turn cold, and the fan of indoor set is blown over indoor air from evaporimeter, thereby makes indoor set blow out cold wind.Airborne water vapour will condense into water droplet after running into cold evaporimeter, spills out along water pipe.The cold-producing medium of gaseous state is got back to compressor continuation compression then, continues circulation.And adopting the air-conditioning of this mode, power consumption is bigger.
For the purpose of energy-saving and emission-reduction, had air-conditioning to adopt natural cooling source, the new wind that is about to the outside directly introduce the room be take effect most, direct and the simplest method.Make and have following defective in this way: can't guarantee room air cleanliness factor, uncontrollable adjusting wind pushing temperature, the low excessively dewfall that causes of wind pushing temperature in winter is damaged calculator room equipment and is caused indoor humidity too small.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of air conditioner refrigerating, it is big to be intended to solve existing refrigerating method power consumption, can't guarantee room air cleanliness factor, uncontrollable adjusting wind pushing temperature, the low excessively dewfall that causes of wind pushing temperature in winter is damaged calculator room equipment and is caused the too small problem of indoor humidity.
The embodiment of the invention is achieved in that a kind of method of fresh air conditioner refrigeration, said method comprising the steps of:
Control first blower fan room air is introduced heat exchanger;
Control second blower fan outdoor new wind is introduced heat exchanger;
Control heat exchanger outdoor new wind and room air are carried out exchange heat, and cooled room air is drawn back indoor, and the outdoor new wind after the heat exchange is discharged to outdoor,
More than the low Δ T of the temperature of described outdoor new wind ratio room air, described Δ T for can set greater than 0 real number.
Further, described method also comprises step:
Detect indoor temperature and outdoor temperature;
Compare indoor temperature and outdoor temperature.
Further, the value of described Δ T is 10 ℃.
Another purpose of the embodiment of the invention is to provide a kind of fresh air conditioner refrigeration system, described air-conditioning refrigeration system comprises air-conditioner controller, second blower fan, first blower fan, heat exchanger, described air-conditioner controller is electrically connected with described second blower fan, first blower fan, heat exchanger, described heat exchanger both sides are connected with second blower fan, first blower fan respectively
After described air-conditioner controller receives enabled instruction, control second blower fan outdoor new wind is introduced heat exchanger, control first blower fan room air is introduced heat exchanger, the control heat exchanger carries out exchange heat to outdoor new wind and room air, draw back cooled room air indoor, and the outdoor new wind after the heat exchange being discharged to outdoor, the temperature of described outdoor new wind will be lower than the temperature of room air.
Further, described air-conditioning refrigeration system also comprises the compressor cooling precision air conditioner, and described air-conditioner controller is electrically connected with described compressor cooling precision air conditioner,
Air-conditioner controller detects indoor temperature and outdoor temperature, and compares the height of indoor temperature and outdoor temperature, when indoor temperature is higher than outdoor temperature, sends instruction startup compressor refrigeration system and freezes.
Further, described heat exchanger is connected in aggregates with second blower fan, first blower fan, and perhaps described heat exchanger is connected with second blower fan, first blower and pipeline, and perhaps described heat exchanger is connected by pipeline with second blower fan, compressor cooling precision air conditioner.
Further, described second blower fan is a frequency conversion fan.
Another purpose of the embodiment of the invention is to provide a kind of fresh air conditioner controller, and described air-conditioner controller comprises:
The first blower fan control module is used to control first blower fan room air is introduced heat exchanger;
The second blower fan control module is used to control second blower fan outdoor new wind is introduced heat exchanger; And
The heat exchange control module is used to control heat exchanger outdoor new wind and room air is carried out exchange heat, and cooled room air is drawn back indoor, and the outdoor new wind after the heat exchange is discharged to outdoor,
The temperature of described outdoor new wind will be lower than the temperature of room air.
Further, described fresh air conditioner controller also comprises:
Temperature detecting module is used to detect indoor temperature and outdoor temperature; And
Temperature comparison module is used for comparison indoor temperature and outdoor temperature.
Further, described fresh air conditioner controller also comprises:
Compressor air-conditioning starts module, be used for when indoor temperature is lower than outdoor temperature, and indoor temperature is sent instruction startup compressor cooling precision air conditioner and freezed when being higher than design temperature.
In an embodiment of the present invention, when outdoor temperature is lower than indoor temperature, as low-temperature receiver, room air is cooled off, after the cooling, room air is sent back to indoor and that outdoor new wind introducing is not indoor with outdoor new wind.Like this, not only solved the bigger problem of power consumption of the refrigerating method of existing employing compressor, and when having avoided the new wind of direct introducing, can't guarantee room air cleanliness factor, uncontrollable adjusting wind pushing temperature, the low excessively dewfall that causes of wind pushing temperature in winter is damaged calculator room equipment and is caused the too small problem of indoor humidity.
Description of drawings
Fig. 1 is the flow chart of method of the fresh air conditioner refrigeration of first embodiment provided by the invention;
Fig. 2 is the flow chart of method of the fresh air conditioner refrigeration of second embodiment provided by the invention;
Fig. 3 is first kind of structural representation of the system of the fresh air conditioner refrigeration that provides of the embodiment of the invention;
Fig. 4 is second kind of structural representation of the system of the fresh air conditioner refrigeration that provides of the embodiment of the invention;
Fig. 5 is the third structural representation of the system of the fresh air conditioner refrigeration that provides of the embodiment of the invention;
Fig. 6 is the structural representation of the air-conditioner controller that provides of the embodiment of the invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention utilizes outdoor new wind as low-temperature receiver, room air is freezed, and do not introduce outdoor new wind indoor.Therefore, method of the present invention and respective refrigeration systems mainly are applicable to when outdoor temperatures such as winter, night are lower than indoor temperature.
Fig. 1 shows the flow process of method of the fresh air conditioner refrigeration of first embodiment provided by the invention, and details are as follows:
In step S101, control first blower fan room air is introduced heat exchanger.
In step S102, control second blower fan outdoor new wind is introduced heat exchanger.
In step S103, the control heat exchanger carries out exchange heat to outdoor new wind and room air, and cooled room air is drawn back indoor, and is discharged to the outdoor new wind after the heat exchange outdoor.
This embodiment is applicable to indoor temperature than outdoor temperature height, and temperature gap reaches the above situation of Δ T, and as embodiments of the invention, Δ T can be 10 ℃.
Fig. 2 shows the flow process of method of the fresh air conditioner refrigeration of second embodiment provided by the invention, in the present embodiment, can freeze together in conjunction with the compressor cooling precision air conditioner.Details are as follows:
In step S201, detect indoor temperature (t
N) and outdoor temperature (t
W).
In step S202, compare the height of indoor temperature and outdoor temperature.
When indoor temperature is higher than outdoor temperature, and t
N-t
WDuring 〉=Δ T (can set, for example can be set at 10 ℃), execution in step S204 and S205.When indoor temperature lower than outdoor temperature, perhaps, when indoor temperature than outdoor temperature height, but difference is not when reaching Δ T, execution in step S203.
In step S203, open the compressor cooling precision air conditioner, and detect first blower fan with whether second blower fan is in running order, as if being in, then close first and second blower fan.
Whether in step S204, it is in running order to detect the compressor cooling precision air conditioner, if in running order, and close compressor refrigeration precision air conditioner then.
In step S205, control first blower fan (indoor circulation blower fan) operation, room air is introduced heat exchanger.
In step S206, compare the temperature of indoor air temperature and setting.
When indoor temperature during greater than design temperature, and difference reaches Δ T2 when above, execution in step S208; When indoor temperature is less than or equal to design temperature, execution in step S207.Wherein, Δ T2 gets the value littler than Δ T, for example 2.5 ℃.
In step S207, control second blower fan and quit work.
In step S208, control second blower fan (new wind circulator) work.
In step S209, the control heat exchanger carries out exchange heat to outdoor new wind and room air, and cooled room air is drawn back indoor, and is discharged to the outdoor new wind after the heat exchange outdoor.
In step S210, every one blanking time t, relatively indoor temperature and design temperature.
When indoor temperature during greater than design temperature, and difference reaches Δ T3 when above, execution in step S211; When indoor temperature is less than or equal to design temperature, return execution in step S207.Wherein, Δ T3 is setting value greater than Δ T2.
In step S211, the compressor cooling precision air conditioner is opened in control.When indoor temperature is less than or equal to design temperature, close this precision air conditioner again.
Consult Fig. 3,4,5, three kinds of structures of the system that the fresh air conditioner that provides for the embodiment of the invention freezes, this air-conditioning refrigeration system comprises that fresh air conditioner controller 24 is (in the third structure, be Fig. 5, the precision air conditioner controller 25 of fresh air conditioner controller 24 and compressor cooling precision air conditioner is integrated, be air-conditioner controller 27), first blower fan 33 (indoor circulation blower fan), second blower fan (new wind circulating fan) 31 is (in the third structure, be Fig. 5, second blower fan 33 can use the blower fan of compressor precision air conditioner, promptly with the shared blower fan of precision air conditioner), heat exchanger 32.This fresh air conditioner controller 24 is electrically connected with second blower fan 31, first blower fan 33, heat exchanger 32, and described heat exchanger 32 both sides are connected with second blower fan 31, first blower fan 33 respectively.
After fresh air conditioner controller 24 receives enabled instruction, control second blower fan 31 outdoor new wind is introduced heat exchanger 32, control first blower fan 33 room air is introduced heat exchanger 32, control 32 pairs of outdoor new wind of heat exchanger and room air carry out exchange heat, draw back cooled room air indoor, and the outdoor new wind after the heat exchange being discharged to outdoor, the temperature of described outdoor new wind will be lower than the temperature of room air.
For practical more, as embodiments of the invention, this air-conditioning refrigeration system can comprise compressor refrigeration system.This compression mechanism refrigeration system comprises compressor precision air conditioner and precision air conditioner controller, and as embodiments of the invention, this precision air conditioner controller can be combined into one with the fresh air conditioner controller.This fresh air conditioner controller is electrically connected with compressor refrigeration system, and the fresh air conditioner controller detects indoor temperature and outdoor temperature, and the height of indoor temperature and outdoor temperature relatively, when indoor temperature is lower than outdoor temperature, and t
N-t
WIn the time of＜10 ℃, send instruction startup compressor refrigeration system and freeze.Like this, just realized when outdoor temperatures such as summer are higher than indoor temperature, also can realize refrigeration.
As embodiments of the invention, described heat exchanger 32 can be connected (Fig. 3) in aggregates with second blower fan 31, first blower fan 33.As another embodiment of the present invention, described heat exchanger 32 is connected (Fig. 4) with second blower fan 31, first blower fan 33 by pipeline.As another embodiment of the present invention (Fig. 5), described heat exchanger 32 is connected described first blower fan 33 and the shared identical blower fan of the blower fan of compressor cooling precision air conditioner (not shown common blower fan) with first blower fan 33 by pipeline.At this moment, the integrated air-conditioner controller 27 of fresh air conditioner controller and precision air conditioner controller.
If because outdoor temperature is low excessively during winter, and the temperature of room air and water capacity are higher, pass through heat exchange so after, may cause the room air dewfall.In order to prevent dewfall, as embodiments of the invention, this second blower fan 31 adopts frequency conversion fan, controls the resh air requirement of introducing according to the different automatic frequency-conversions of temperature of indoor circulation air-out.
Fig. 6 shows the structure of the fresh air conditioner controller that the embodiment of the invention provides.This fresh air conditioner controller comprises: the first blower fan control module 242, the second blower fan control module 243, heat exchange control module 244.This first blower fan control module, 241 controls, first blower fan is introduced heat exchanger with room air, the second blower fan control module, 243 controls, second blower fan is introduced heat exchanger with outdoor new wind, heat exchange control module 244 control heat exchangers carry out exchange heat to outdoor new wind and indoor wind, and send back to cooled room air indoor, and be discharged to the outdoor new wind after the heat exchange outdoor, the temperature of described outdoor new wind will be lower than indoor wind, and difference reaches more than the Δ T.
As embodiments of the invention, described fresh air conditioner controller also comprises temperature detecting module 240, temperature comparison module 241.This temperature detecting module 240 detects indoor temperature and outdoor temperature, also detects the also indoor design temperature of indoor temperature simultaneously.Temperature comparison module 241 compares the height of indoor temperature and outdoor temperature, also compares the height of indoor temperature and indoor design temperature simultaneously.
As embodiments of the invention, described fresh air conditioner controller 24 also comprises compressor start control module 245, when indoor temperature is lower than outdoor temperature, and t
N-t
WDuring＜Δ T, or in a period of time, the uncontrollable indoor temperature of this fresh air conditioner refrigeration system is in the claimed range of setting the time, and this compressor start control module 245 is sent instruction and started compressor and freeze.Certainly, when indoor temperature is higher than outdoor temperature, and t
N-t
WIn the time of 〉=Δ T ℃, then start above-mentioned first and second blower fan and heat exchanger.
In sum, when outdoor temperature is lower than indoor temperature, as low-temperature receiver, indoor wind is cooled off, after the cooling, room air is sent back to indoor and that outdoor new wind introducing is not indoor with outdoor new wind.Like this, not only solved the bigger problem of power consumption of the refrigerating method of existing employing compressor, and when having avoided the new wind of direct introducing, can't guarantee room air cleanliness factor, uncontrollable adjusting wind pushing temperature, the low excessively dewfall that causes of wind pushing temperature in winter is damaged calculator room equipment and is caused problems such as indoor humidity is too small.By increasing compressor cooling precision air conditioner system in an embodiment of the present invention, thereby make this air-conditioning system practical more, the application scenario is more extensive.And this air-conditioning system is suitable for machine room, can be used as special air conditioning for device room.This heat exchanger, first blower fan, second blower fan can connect in aggregates, also can connect by pipeline, thereby can conveniently place and install, this heat exchanger, first blower fan can also be connected use by pipeline with the compressor cooling precision air conditioner, thus convenient the installation and the saving cost.By adopting frequency conversion fan, can prevent dewfall as second blower fan.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a fresh air conditioner refrigeration is characterized in that, said method comprising the steps of:
Control first blower fan room air is introduced heat exchanger;
Control second blower fan outdoor new wind is introduced heat exchanger;
Control heat exchanger outdoor new wind and room air are carried out exchange heat, and cooled room air is drawn back indoor, and the outdoor new wind after the heat exchange is discharged to outdoor,
More than the low Δ T of the temperature of described outdoor new wind ratio room air, described Δ T for can set greater than 0 real number.
2. according to the method for the described fresh air conditioner refrigeration of claim 1, it is characterized in that described method also comprises step:
Detect indoor temperature and outdoor temperature;
Compare indoor temperature and outdoor temperature.
3. the method for fresh air conditioner refrigeration according to claim 1 is characterized in that the value of described Δ T is 10 ℃.
4. fresh air conditioner refrigeration system, it is characterized in that, described air-conditioning refrigeration system comprises air-conditioner controller, second blower fan, first blower fan, heat exchanger, described air-conditioner controller is electrically connected with described second blower fan, first blower fan, heat exchanger, described heat exchanger both sides are connected with second blower fan, first blower fan respectively
After described air-conditioner controller receives enabled instruction, control second blower fan outdoor new wind is introduced heat exchanger, control first blower fan room air is introduced heat exchanger, the control heat exchanger carries out exchange heat to outdoor new wind and room air, draw back cooled room air indoor, and the outdoor new wind after the heat exchange being discharged to outdoor, the temperature of described outdoor new wind will be lower than the temperature of room air.
5. fresh air conditioner refrigeration system according to claim 4 is characterized in that described air-conditioning refrigeration system also comprises the compressor cooling precision air conditioner, and described air-conditioner controller is electrically connected with described compressor cooling precision air conditioner,
Air-conditioner controller detects indoor temperature and outdoor temperature, and compares the height of indoor temperature and outdoor temperature, when indoor temperature is higher than outdoor temperature, sends instruction startup compressor refrigeration system and freezes.
6. air-conditioning refrigeration system according to claim 5, it is characterized in that, described heat exchanger is connected in aggregates with second blower fan, first blower fan, perhaps described heat exchanger is connected with second blower fan, first blower and pipeline, and perhaps described heat exchanger is connected by pipeline with second blower fan, compressor cooling precision air conditioner.
7. fresh air conditioner refrigeration system according to claim 4 is characterized in that, described second blower fan is a frequency conversion fan.
8. a fresh air conditioner controller is characterized in that, described air-conditioner controller comprises:
The first blower fan control module is used to control first blower fan room air is introduced heat exchanger;
The second blower fan control module is used to control second blower fan outdoor new wind is introduced heat exchanger; And
The heat exchange control module is used to control heat exchanger outdoor new wind and room air is carried out exchange heat, and cooled room air is drawn back indoor, and the outdoor new wind after the heat exchange is discharged to outdoor,
The temperature of described outdoor new wind will be lower than the temperature of room air.
9. described according to Claim 8 fresh air conditioner controller is characterized in that described air-conditioner controller also comprises:
Temperature detecting module is used to detect indoor temperature and outdoor temperature; And
Temperature comparison module is used for comparison indoor temperature and outdoor temperature.
10. described according to Claim 8 fresh air conditioner controller is characterized in that described air-conditioner controller also comprises:
Compressor air-conditioning starts module, be used for when indoor temperature is lower than outdoor temperature, and indoor temperature is sent instruction startup compressor cooling precision air conditioner and freezed when being higher than design temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010042834A CN101839536A (en) | 2010-01-19 | 2010-01-19 | Method for air conditioner refrigeration by using fresh air, corresponding refrigeration system and controller |
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|---|---|---|---|
| CN201010042834A CN101839536A (en) | 2010-01-19 | 2010-01-19 | Method for air conditioner refrigeration by using fresh air, corresponding refrigeration system and controller |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466297A (en) * | 2010-11-16 | 2012-05-23 | 秦金红 | Method and device for controlling real-time dynamic temperatures of machine room and base station |
| CN102829528A (en) * | 2012-09-14 | 2012-12-19 | 中国联合网络通信集团有限公司 | Method, device and system for controlling temperature of communication machine room |
| CN105333566A (en) * | 2014-08-13 | 2016-02-17 | 戴若夫 | Control methods for fresh air heat exchange air conditioning system and system |
| WO2017031836A1 (en) * | 2015-08-21 | 2017-03-02 | 北京百度网讯科技有限公司 | Air side natural cooling method, device, system, equipment and non-volatile computer storage medium |
| CN108332349A (en) * | 2017-09-30 | 2018-07-27 | 广东美的制冷设备有限公司 | Air conditioner and its control method and device |
| CN111878894A (en) * | 2020-05-29 | 2020-11-03 | 青岛海尔空调电子有限公司 | Cooperative control system and cooperative control method for air conditioner and fresh air machine |
| CN114811876A (en) * | 2022-04-22 | 2022-07-29 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
| WO2023045359A1 (en) * | 2021-09-24 | 2023-03-30 | 青岛海尔空调器有限总公司 | Method and system for controlling computer room air conditioner, electronic device, and storage medium |
-
2010
- 2010-01-19 CN CN201010042834A patent/CN101839536A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466297A (en) * | 2010-11-16 | 2012-05-23 | 秦金红 | Method and device for controlling real-time dynamic temperatures of machine room and base station |
| CN102829528A (en) * | 2012-09-14 | 2012-12-19 | 中国联合网络通信集团有限公司 | Method, device and system for controlling temperature of communication machine room |
| CN102829528B (en) * | 2012-09-14 | 2014-12-10 | 中国联合网络通信集团有限公司 | Method, device and system for controlling temperature of communication machine room |
| CN105333566A (en) * | 2014-08-13 | 2016-02-17 | 戴若夫 | Control methods for fresh air heat exchange air conditioning system and system |
| WO2017031836A1 (en) * | 2015-08-21 | 2017-03-02 | 北京百度网讯科技有限公司 | Air side natural cooling method, device, system, equipment and non-volatile computer storage medium |
| CN108332349A (en) * | 2017-09-30 | 2018-07-27 | 广东美的制冷设备有限公司 | Air conditioner and its control method and device |
| CN111878894A (en) * | 2020-05-29 | 2020-11-03 | 青岛海尔空调电子有限公司 | Cooperative control system and cooperative control method for air conditioner and fresh air machine |
| WO2023045359A1 (en) * | 2021-09-24 | 2023-03-30 | 青岛海尔空调器有限总公司 | Method and system for controlling computer room air conditioner, electronic device, and storage medium |
| CN114811876A (en) * | 2022-04-22 | 2022-07-29 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
| CN114811876B (en) * | 2022-04-22 | 2024-03-22 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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Application publication date: 20100922 |