The utility model content
The purpose of this utility model is to solve air-conditioning reliability and the power saving that prior art exists, and proposes a kind of improved dual system aircondition.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is: a kind of dual system aircondition, comprise two groups of independently first cooling cycle system and second cooling cycle systems, it is characterized in that: the control device that also comprises the operation of automatic control first cooling cycle system and second cooling cycle system.
Described control device comprises microprocessor, the information acquisition module that is connected with microprocessor, alarm module, operation and display module and control module.
Compared with prior art, the utility model has adopted two to overlap independently refrigeration system, switches by automaton and uses the reliability height.In addition, can select to open one or two refrigeration system operations according to demand, energy savings.
The specific embodiment
First embodiment of the present utility model comprises two separate refrigeration system A and B as depicted in figs. 1 and 2, and each refrigeration system comprises independently compressor 3 or 4, condenser 10 or 11, throttling arrangement and evaporimeter 7 or 8; Two refrigeration systems are again by 9 controls of unified control device.When system's thermic load is not too big, refrigeration system A operation, refrigeration system B is standby, after a while, and refrigeration system B work, refrigeration system A is standby, two groups of mutual alternate runs of refrigeration system.When system loading was bigger, two refrigeration system A and B moved simultaneously.Cooperation between two systems and switching by control device 9 is finished automatically according to the mode of setting.
Refrigeration system A is by forming with the lower part: indoor fan 1, compressor 3, outdoor fan 5, evaporimeter 7, condenser 10; The flow direction of its cooling agent is: compressor 3----condenser 10----evaporimeter 7----compressor 3, indoor 1 blower fan blows evaporimeter 7, outdoor fan 5 blast-cold condensers 10.
Refrigeration system B is by forming with the lower part: indoor fan 2, compressor 4, outdoor fan 6, evaporimeter 8, condenser 11; The flow direction of its cooling agent is: compressor 4----condenser 11----evaporimeter 8----compressor 4, indoor fan 2 blows evaporimeter 8, outdoor fan 6 blast-cold condensers 11.
In first embodiment shown in Figure 1, first cooling cycle system (A) and second cooling cycle system (B) are wholely set in rack, compressor 3 and 4 and condenser 10,11 and outdoor fan 5,6 be placed on the bottom of rack, condenser 10,11 is " V " font and arranges, evaporimeter 7,8 and indoor fan are placed on the top of rack, and evaporimeter 7,8 also is " V " font and arranges.
Fig. 3 and Fig. 4 are second embodiment of the present utility model, and kind of refrigeration cycle is identical with first embodiment in this embodiment.Condenser 10,11 and outdoor fan 5,6 are placed on the top of rack, and evaporimeter 7,8 and indoor fan are placed on the below of rack, and compressor is placed on the middle part of rack, and all parts also are the one designs, are placed in the rack.
As shown in Figure 5, described control device 9 comprises microprocessor, the information acquisition module that is connected with microprocessor, alarm module, operation and display module and control module.
In an embodiment of the present utility model.Described information acquisition module comprises the device of gathering indoor temperature, outdoor temperature, electric current and voltage.Described operation and display module comprise input keyboard and LCD display unit.Described alarm module comprises the high-low pressure alarm.Described control module comprises the device of control blower fan, compressor, heater and alarm.
During work, two compressors all should be in normal condition, when main frame breaks down, alarm module can be reported to the police automatically, microprocessor receives the report for police service and can carry out active and standby failover automatically behind the signal, and the main frame that promptly breaks down is downgraded to standby host, and the standby host of normal condition rises to main frame.Switching time is very short at interval.
Control module can be set in two compressors regularly taking turn pattern, and regularly the taking turn time can be set, if main frame surpasses setting value running time, then system carries out active and standby switching automatically.Be that original main frame drops to standby host, standby host originally rises to main frame.
Circuit of the present utility model as shown in Figure 6.
In an embodiment of the present utility model, but two independently refrigeration system evaporator and condenser integral manufacturings, at this moment, though this time evaporimeter and the condenser appearance look like a shared cover, the inside pipeline remain two separate circuits.The indoor fan of two cover systems and outdoor fan also can be shared.
The dual system aircondition that the utility model proposes has active and standby taking turn and fail-over feature, can guarantee that all devices use evenly, improves entire system service life; Even when an equipment breaks down, still can guarantee 50% refrigerating capacity output, reliability improves.In addition, the utility model can be selected to drive a machine according to load variations, or drives two machines simultaneously, and the energy is reasonably used.