CN205403229U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN205403229U CN205403229U CN201620134440.0U CN201620134440U CN205403229U CN 205403229 U CN205403229 U CN 205403229U CN 201620134440 U CN201620134440 U CN 201620134440U CN 205403229 U CN205403229 U CN 205403229U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 76
- 230000008020 evaporation Effects 0.000 claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000010257 thawing Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005055 memory storage Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model relates to an air conditioning system, include the compressor through main working medium tube coupling, use the side heat exchanger, first throttling element and heat source side heat exchanger, heat source side heat exchanger includes two at least heat source side heat transfer units, the exhaust end of compressor passes through vice working medium tube coupling respectively with two at least heat source side heat transfer unit's entry linkage, be equipped with the switch unit in two heat source side heat transfer unit's entrance side, the switch unit is used for switching the intercommunication between the exhaust end of first throttling element and compressor and each heat source side heat transfer unit's the entry, some heat source side heat transfer units and first throttling element intercommunication in making two at least heat source side heat transfer units, realize heating cycle as the evaporation heat absorption group, and make the exhaust end intercommunication of all the other heat source side heat transfer units and compressor, in order to carry out self heating as the heating group. The utility model discloses can effectively defrost to improve air conditioning unit ability.
Description
Technical field
This utility model relates to air-conditioning technical, particularly relates to a kind of air conditioning system.
Background technology
Air-cooled unit is when heating winter, and the finned heat exchanger of evaporation side, on fin surface frosting easy with the process of air heat-exchange, affects heat exchange efficiency of fins, thus affecting unit capacity and reliability of operation.In order to eliminate the impact of fin frosting, the method being typically with cross valve switching at present reversely defrosts, this Defrost mode effect is obvious, but the problem with hydraulic compression when being easily caused compressor defrost, and unit capacity is decreased obviously, fluctuating temperature is very big, affects the comfort of user.
In addition, also have and directly use the method for hot-gas bypass to carry out the technical scheme of defrost, but this often causes because of heat source insufficiency that again defrost is unclean.Electrically heated defrost mode can make again set structure complicated, and technology difficulty increases with realizing difficulty.
Utility model content
The purpose of this utility model is to propose a kind of air conditioning system, it is possible to effectively defrosts, and improves air conditioning unit ability.
nullFor achieving the above object，This utility model provides a kind of air conditioning system，Including the compressor connected by main working medium pipeline、Use side heat exchanger、First throttle element and heat source side heat exchanger，Wherein，Described heat source side heat exchanger includes at least two heat source side heat exchange unit，The exhaust end of described compressor is connected with the entrance of described at least two heat source side heat exchange unit respectively by secondary working medium pipeline，Entrance side at said two heat source side heat exchange unit is provided with switch unit，Described switch unit is for switching over the connection between exhaust end and the entrance of each heat source side heat exchange unit of described first throttle element and described compressor，Some the heat source side heat exchange units in described at least two heat source side heat exchange unit are made to connect with described first throttle element，To realize heating circulation as evaporation endothermic group，And make all the other heat source side heat exchange units connect with the exhaust end of described compressor，To carry out conducting self-heating as heating group.
Further, the operational group that each heat source side heat exchange unit in described at least two heat source side heat exchange unit is corresponding in described air conditioning system running, can be switched over by described switch unit, to realize the conducting self-heating of all heat source side heat exchange units.
Further, described secondary working medium pipeline is additionally provided with the gases at high pressure for described compressor is discharged and carries out the second section fluid element of reducing pressure by regulating flow.
Further, described second section fluid element includes capillary tube.
Further, described first throttle element includes electric expansion valve, by the aperture of described electric expansion valve regulates the working medium flow that could alter that the exhaust end of described compressor leads to the heat source side heat exchange unit as heating group.
Further, also include controller and temperature sensing unit, described controller carries out signal with described temperature sensing unit and described electric expansion valve respectively and is connected, and for the compressor exhaust temperature detected by described temperature sensing unit and the own temperature as the heat source side heat exchange unit of heating group, the aperture of described electric expansion valve is adjusted.
Further, described temperature sensing unit includes:
First temperature sensor, is arranged on the exhaustor of described compressor, is used for detecting described compressor exhaust temperature；
Second temperature sensor, is arranged on described heat source side heat exchange unit, for detecting the own temperature of the heat source side heat exchange unit as heating group.
Further, described switch unit includes check valve and stop valve, on every main working medium pipeline that described check valve is arranged between described first throttle element and the entrance of each heat source side heat exchange unit, and the outlet of described check valve connects with the entrance of described heat source side heat exchange unit, on every secondary working medium pipeline that described stop valve is arranged between the exhaust end of described compressor and the entrance of each heat source side heat exchange unit, by to described stop valve be turned on and off realize to the exhaust end of described first throttle element and described compressor respectively and the switching control of connected relation between the entrance of each heat source side heat exchange unit.
Further, described switch unit is reversal valve, two imports of described reversal valve connect with the exhaust end of described first throttle element and described compressor respectively, multiple outlets of described reversal valve connect with the entrance of each heat source side heat exchange unit respectively, realize the exhaust end to described first throttle element and described compressor respectively and the switching control of connected relation between the entrance of each heat source side heat exchange unit by the working position of described reversal valve is switched.
Further, described switch unit is at least two three-way diverter valve, two imports of described at least two three-way diverter valve connect with the exhaust end of described first throttle element and described compressor respectively, the outlet of described at least two three-way diverter valve connects with the entrance of each heat source side heat exchange unit respectively, realizes the exhaust end to described first throttle element and described compressor respectively and the switching control of connected relation between the entrance of each heat source side heat exchange unit by the working position of described at least two three-way diverter valve is switched.
Further, described use side heat exchanger is full-liquid type case tube heat exchanger, and described heat source side heat exchanger is air-cooled finned heat exchanger.
Based on technique scheme, this utility model is provided with plural heat source side heat exchange unit, and make the exhaust end of compressor be connected with the entrance of described at least two heat source side heat exchange unit respectively by secondary working medium pipeline, switching by the connected relation between exhaust end and the entrance of each heat source side heat exchange unit to first throttle element and compressor, some heat source side heat exchange units can be made to realize heating circulation as evaporation endothermic group, remaining heat source side heat exchange unit then connects with compressor air-discharging end and the direct working medium obtaining High Temperature High Pressure from compressor, utilize this working medium that heat source side heat exchange unit is heated self, so that unit heats and defrosting process carries out simultaneously, improve unit capacity, and the process that is capable of effectively defrosting.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the principle schematic of an embodiment of this utility model air conditioning system.
Fig. 2 is the principle schematic of another embodiment of this utility model air conditioning system.
Fig. 3 is the principle schematic of the another embodiment of this utility model air conditioning system.
Detailed description of the invention
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
As it is shown in figure 1, be the principle schematic of an embodiment of this utility model air conditioning system.In the present embodiment, air conditioning system includes the compressor 1 by the connection of main working medium pipeline, uses side heat exchanger 2, first throttle element 3 and heat source side heat exchanger.Heat source side heat exchanger includes at least two heat source side heat exchange unit 4, 5, the exhaust end of compressor 1 by secondary working medium pipeline respectively with at least two heat source side heat exchange unit 4, the entrance of 5 connects, at said two heat source side heat exchange unit 4, the entrance side of 5 is provided with switch unit, switch unit is used for the exhaust end to described first throttle element 3 and compressor 1 and each heat source side heat exchange unit 4, connection between the entrance of 5 switches over, make described at least two heat source side heat exchange unit 4, some heat source side heat exchange units 4 in 5, 5 connect with described first throttle element 3, to realize heating circulation as evaporation endothermic group, and make all the other heat source side heat exchange units 4, 5 connect with the exhaust end of described compressor 1, to carry out conducting self-heating as heating group.
In the present embodiment, some other devices are also included, for instance be arranged on the filter 10a before and after first throttle element 3 and filter 10b, and gas-liquid separator 6 etc..Air conditioning system heats in circulation normally in FIG, the working medium of the High Temperature High Pressure that compressor 1 is discharged first passes through use side heat exchanger 2 and use is sidelong heat, working medium after heat release enters heat source side heat exchange unit 4 then through filter 10a, first throttle element 3 and filter 10b, 5, to absorb heat from heat source side, sucked back compressor 1 after entering back into gas-liquid separator 6.
When needs carry out defrost, some heat source side heat exchange units are made by the switching of switch unit, such as heat source side heat exchange unit 4 connects the secondary working medium pipeline between the exhaust end of compressor 1, and all the other heat source side heat exchange units, such as heat source side heat exchange unit 5 then remains connection first throttle unit 3, the working medium thus making the High Temperature High Pressure that the exhaust end of compressor 1 discharges separates a part and flows directly into heat source side heat exchange unit 4, and another part working medium still enters use side heat exchanger, and after first throttle element 3, enter heat source side heat exchange unit 5.Himself can be heated by the working medium flowing into heat source side heat exchange unit 4, meet the demand of the heating of various needs such as its defrosting, deicing, and flow into the working medium of heat source side heat exchange unit 5, then realize the normal heating process at heat source side evaporation endothermic, and the heating that heating operations is also heat source side heat exchange unit 4 provides enough heats so that it is the various operation needing heating such as defrosting, deicing can be completed within the rational time.
In the embodiment of this utility model air conditioning system, except can adopting the heat source side heat exchanger of the double; two heat source side heat exchange units shown in Fig. 1, the heat source side heat exchange unit of more than 3 can also be adopted, when switching over, some heat source side heat exchange units then can be made as the evaporation endothermic group realizing normally heating circulation, and remaining heat source side heat exchange unit is as the heating group to conducting self-heating, and in the two group, the quantity of heat source side heat exchange unit can be distributed requirement according to coolant and is adjusted.In one embodiment, it is preferred that use two heat source side heat exchange units, control process and system structure so can be simplified, and also easier in coolant distribution.
In described air conditioning system running, in order to make each heat source side heat exchange unit have the opportunity to carry out conducting self-heating, then can make switch unit in described air conditioning system running, to described at least two heat source side heat exchange unit 4, each heat source side heat exchange unit 4 in 5, the operational group of 5 correspondences switches over, to realize the conducting self-heating of all heat source side heat exchange units 4,5.It is to say, the composition of the heat source side heat exchange unit in evaporation endothermic group and heating group can be adjusted in air conditioning system running, in order to make more heat source side heat exchange unit realize conducting self-heating, in order to complete the various operation needing heating such as defrosting, deicing.
In another embodiment, the gases at high pressure that may be provided on secondary working medium pipeline that described compressor 1 is discharged carry out the second section fluid element 7 of reducing pressure by regulating flow, it is preferred to capillary tube.The specification of capillary tube can be mated according to the various operating modes of air conditioning system.
Working medium in order to realize heating and heat-absorbing action can be allocated as required, preferred first throttle element 3 includes electric expansion valve, by the aperture of electric expansion valve being regulated the working medium flow that could alter that the exhaust end of compressor 1 leads to the heat source side heat exchange unit 4,5 as heating group.In order to realize the programme-control of electric expansion valve, air conditioning system can further include controller and temperature sensing unit, controller carries out signal with temperature sensing unit and electric expansion valve respectively and is connected, the aperture of electric expansion valve is adjusted by the own temperature for the compressor exhaust temperature detected by temperature sensing unit with as the heat source side heat exchange unit 4,5 of heating group.When tuning up the aperture of electronics expansion valve, the working medium being assigned to main working medium pipeline increases, and the working medium being assigned to secondary working medium pipeline accordingly reduces, otherwise then contrary.
Owing to the aperture of electric expansion valve controls to need the own temperature of investigation compressor exhaust temperature and the heat source side heat exchange unit as heating group, therefore temperature sensing unit can specifically include: the first temperature sensor, such as aerofluxus temperature-sensitive bag etc., it is arranged on the exhaustor of described compressor 1, is used for detecting described compressor exhaust temperature；With the second temperature sensor, be arranged on described heat source side heat exchange unit, for detecting the own temperature of the heat source side heat exchange unit as heating group.When being air-cooled finned heat exchanger when selecting heat source side heat exchange unit, the second temperature sensor is the temperature-sensitive bag being arranged on finned heat exchanger separatory capillary liquid pipe.Defrost can be realized by the adjustment of the aperture of electronics expansion valve, change the adjustment of the activity duration of the demand for heat such as ice.
nullIt is previously noted the switching of the connected relation that switch unit is capable of between each heat source side heat exchange unit and main working medium pipeline and secondary working medium pipeline，Fig. 1 illustrates and a kind of realizes structure based on check valve and stop valve，Namely switch unit includes check valve 8a，8b and stop valve 9a，9b，Check valve 8a，8b is arranged on described first throttle element 3 and each heat source side heat exchange unit 4，On every main working medium pipeline between the entrance of 5，And described check valve 8a，The outlet of 8b and described heat source side heat exchange unit 4，The entrance connection of 5，Described stop valve 9a，9b is arranged on exhaust end and each heat source side heat exchange unit 4 of described compressor 1，On every secondary working medium pipeline between the entrance of 5，By to described stop valve 9a，Being turned on and off of 9b realize to the exhaust end of described first throttle element 3 and described compressor 1 respectively with each heat source side heat exchange unit 4，The switching control of connected relation between the entrance of 5.
For embodiment illustrated in fig. 1, when heat source side heat exchange unit 4 is carried out defrosting operation by needs, opening stop valve 9a also closes stop valve 9b, the working medium of the High Temperature High Pressure that the exhaust end of compressor 1 is discharged enters heat source side heat exchange unit 4 after second section fluid element 7 and stop valve 9a, and now owing to the outlet pressure of check valve 8a is higher than the pressure of the entrance connecting first throttle element 3, therefore check valve 8a also reversely ends so that the working medium through first throttle element 3 is no longer flow into heat source side heat exchange unit 4.And now heat source side heat exchange unit 5 need nonetheless remain for performing normal evaporation endothermic process, the inlet pressure of check valve 8b is forward conduction higher than outlet pressure, therefore can flow into heat source side heat exchange unit 5 through check valve 8b through the working medium of first throttle element 3.
What Fig. 2 illustrated another kind of switch unit realizes structure, namely switch unit is reversal valve 9, two imports of reversal valve 9 connect with the exhaust end of described first throttle element 3 and described compressor 1 respectively, multiple outlets of described reversal valve 9 respectively with each heat source side heat exchange unit 4, the entrance connection of 5, by the working position of described reversal valve 9 is switched realize the exhaust end to described first throttle element 3 and described compressor 1 respectively with the entrance of each heat source side heat exchange unit 4,5 between the switching control of connected relation.As can see from Figure 2, when reversal valve 9 is in middle position, heat source side heat exchange unit 4 and heat source side heat exchange unit 5 all with first throttle unit 3 by main working medium pipeline connection, and be not connected by secondary working medium pipeline with the exhaust end of compressor 1, it it is now air conditioning unit normal heating operations, and when carrying out the heating operations such as defrosting when needs, reversal valve 9 can be made to switch to left position, make heat source side heat exchange unit 4 and first throttle unit 3 by main working medium pipeline connection, and heat source side heat exchange unit 5 is connected by secondary working medium pipeline with the exhaust end of compressor 1；After the heating operations such as the defrosting when heat source side heat exchange unit 5 complete, reversal valve 9 can be made again to switch to right position, make heat source side heat exchange unit 5 and first throttle unit 3 by main working medium pipeline connection, and heat source side heat exchange unit 4 is connected by secondary working medium pipeline with the exhaust end of compressor 1, after the heating operations such as the defrosting when heat source side heat exchange unit 4 complete, reversal valve 9 can be switched back into middle position, thus reverting to normal heating operations.
In another embodiment, as shown in Figure 3, switch unit is at least two three-way diverter valve 9c, 9d, quantity is identical with heat source side heat exchange unit 4,5, two imports of at least two three-way diverter valve 9c, 9d connect with the exhaust end of described first throttle element 3 and described compressor 1 respectively, and the outlet of described at least two three-way diverter valve 9c, 9d connects with the entrance of each heat source side heat exchange unit 4,5 respectively.Namely the first throttle unit 3 in Fig. 3 connects an import of reversal valve 9c and reversal valve 9d respectively, and the exhaust end of compressor 1 connects another import of reversal valve 9c and reversal valve 9d respectively, and the outlet of reversal valve 9c and reversal valve 9d is respectively communicated with the entrance of each heat source side heat exchange unit 4,5, realize the exhaust end to described first throttle element 3 and described compressor 1 respectively and the switching control of connected relation between the entrance of each heat source side heat exchange unit 4,5 by the working position of reversal valve 9c and reversal valve 9d is switched.
In above-mentioned each air conditioning system, use side heat exchanger 2 to be preferably full-liquid type case tube heat exchanger, it is possible to save cost, use side heat exchanger 2 to may be used without double pipe heat exchanger or plate type heat exchanger.Heat source side heat exchanger is preferably air-cooled finned heat exchanger, is also suitable for other all kinds of heat source side heat exchangers that there is heating self-demand.
Based on each embodiment of aforementioned air conditioning system, concrete control flow includes:
When receiving control instruction, switched over by the connection between switch unit exhaust end and the entrance of each heat source side heat exchange unit 4,5 to described first throttle element 3 and described compressor 1；
Switching by described switch unit, make described at least two heat source side heat exchange unit 4, some heat source side heat exchange units 4 in 5,5 connect with described first throttle element 3, to realize heating circulation as evaporation endothermic group, and make all the other heat source side heat exchange units 4,5 connect with the exhaust end of described compressor 1, to carry out conducting self-heating as heating group.
Further, control flow also includes: in described air conditioning system running, by described switch unit to described at least two heat source side heat exchange unit 4, each heat source side heat exchange unit 4 in 5, the operational group of 5 correspondences switches over, to realize the conducting self-heating of all heat source side heat exchange units 4,5.
For including the air conditioning system of controller and temperature sensing unit, and described first throttle element 3 is electric expansion valve, described controller carries out signal with described temperature sensing unit and described electric expansion valve respectively and is connected, then control flow can further include: described controller compressor exhaust temperature detected by described temperature sensing unit and the heat source side heat exchange unit 4 as heating group, the aperture of described electric expansion valve is adjusted by the own temperature of 5, exhaust end to change described compressor 1 leads to the heat source side heat exchange unit 4 as heating group, the working medium flow of 5.
Controller can obtain, from self memory element or external memory storage, the multiple heating-up temperature threshold values preset, at least include the first heating-up temperature threshold value Ta1, the second heating-up temperature threshold value Ta2, the 3rd heating temperature threshold Ta3 and the four heating-up temperature threshold value Ta4, i.e. Ta1 < Ta2 < Ta3 < Ta4 that numerical value becomes larger.
The operation that the aperture of described electric expansion valve is adjusted by controller compressor exhaust temperature detected by described temperature sensing unit and the own temperature as the heat source side heat exchange unit 4,5 of heating group can specifically include:
Described controller receives the own temperature of the compressor exhaust temperature detected by described temperature sensing unit and the heat source side heat exchange unit 4,5 as heating group,
If the heat source side heat exchange unit 4 as heating group, the own temperature of 5 is less than or equal to the first heating-up temperature threshold value Ta1, then described controller sends control signal to described electric expansion valve, makes the aperture of described electric expansion valve be gradually reduced by the first default amplitude；
If the heat source side heat exchange unit 4 as heating group, the own temperature of 5 is between described first heating-up temperature threshold value Ta1 and the second heating-up temperature threshold value Ta2, then described controller sends control signal to described electric expansion valve, the aperture making described electric expansion valve is gradually reduced by the second default amplitude, and described second amplitude is less than described first amplitude；
If the heat source side heat exchange unit 4 as heating group, the own temperature of 5 is greater than or equal to described second heating-up temperature threshold value Ta2, and temperature threshold Ta3 is heated lower than the 3rd, then described controller does not send control signal to described electric expansion valve, or described controller sends control signal to described electric expansion valve, the aperture of described electric expansion valve is made to remain unchanged；
If the heat source side heat exchange unit 4 as heating group, the own temperature of 5 heats temperature threshold Ta3 greater than or equal to the described 3rd, and lower than the 4th heating-up temperature threshold value Ta4, then described controller sends control signal to described electric expansion valve, makes the aperture of described electric expansion valve be gradually increased by the 3rd default amplitude；
If as the own temperature of heat source side heat exchange unit 4,5 of heating group greater than or equal to the 4th heating-up temperature threshold value Ta4, then closing the secondary working medium path between corresponding heat source side heat exchange unit 4,5 and the exhaust end of described compressor 1 by described switch unit.
In above-mentioned control process, compressor exhaust temperature is equivalent to input temp, and as the heat source side heat exchange unit 4 of heating group, the own temperature of 5 is equivalent to output temperature, controller rise valve Main Basis as the numerical intervals residing for the own temperature of the heat source side heat exchange unit of heating group to determine the change of electronics expansion valve aperture, and the adjustment of electronics expansion valve aperture except increase, reduce and maintain motionless except, also can add the amplitude of adjustment, namely in some cycles aperture adjust step number size.Such as the first amplitude is every 5 seconds 10 steps, and the second amplitude is every 5 seconds 5 steps, and the 3rd amplitude is every 10 seconds 5 steps.
When the own temperature of the heat source side heat exchange unit as heating group is relatively low, need to accelerate the heating progress such as defrosting, therefore electronics expansion valve can be turned by a larger margin down, otherwise, when the own temperature of the heat source side heat exchange unit as heating group is higher, then represent that heating progress draws to an end, then can tune up electronics expansion valve, reduce the working medium flowing to the heat source side heat exchange unit as heating group.
Considering the stability of compressor, the aperture of electronics expansion valve is only too small, therefore can add the control process based on compressor exhaust temperature further.Wherein, controller can obtain, from self memory element or external memory storage, the multiple delivery temperature threshold values preset, at least include first row temperature threshold value Tb1 and second row temperature threshold value Tb2, Tb1 that numerical value tapers into > Tb2, for instance value respectively 120 DEG C and 110 DEG C.The operation that the aperture of described electric expansion valve is adjusted by described controller compressor exhaust temperature detected by described temperature sensing unit and the own temperature as the heat source side heat exchange unit 4,5 of heating group can further include:
If described delivery temperature is greater than or equal to described first row temperature threshold value Tb1, then described controller is ignored based on the heat source side heat exchange unit 4 as heating group, the control logic of the own temperature of 5 and send control signal to described electric expansion valve, the aperture making described electric expansion valve is gradually increased by the 3rd default amplitude, until described delivery temperature is lower than described second row temperature threshold value Tb2, then recover the control logic of own temperature based on the heat source side heat exchange unit 4,5 as heating group.That is, when delivery temperature reaches first row temperature threshold value, in order to avoid the impact on compressor stability of the heating operations such as defrosting, need to open big electronics expansion valve as early as possible, more working medium is assigned to main working medium pipeline, until delivery temperature is stablized after under second row temperature threshold value, could continue to be controlled based on the own temperature of the heat source side heat exchange unit as heating group.
Each embodiment of aforementioned this utility model air conditioning system has the following advantages at least one:
1, owing to without reversely defrosting, cross valve therefore can be saved, make system pipeline more succinct, evade the compressor risk with hydraulic compression.
2, unit can be realized heat and carry out with the heating operation such as defrost simultaneously, improve unit capacity efficiency, and the heating operation such as defrost is more effectively.
3, by based on compressor exhaust temperature with as the adjustment to the aperture of electric expansion valve of the own temperature of heat source side heat exchange unit of heating group, it is possible to make the heating operations such as defrost more efficient, it is also possible to reduce fluctuating temperature, promote comfort level.
Finally should be noted that: above example is only in order to illustrate that the technical solution of the utility model is not intended to limit；Although this utility model being described in detail with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to detailed description of the invention of the present utility model or portion of techniques feature carries out equivalent replacement；Without deviating from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that this utility model is claimed.
Claims (11)
- null1. an air conditioning system，Including the compressor (1) connected by main working medium pipeline、Use side heat exchanger (2)、First throttle element (3) and heat source side heat exchanger，It is characterized in that，Described heat source side heat exchanger includes at least two heat source side heat exchange unit (4，5)，The exhaust end of described compressor (1) by secondary working medium pipeline respectively with described at least two heat source side heat exchange unit (4，5) entrance connects，At said two heat source side heat exchange unit (4，5) entrance side is provided with switch unit，Described switch unit is used for the exhaust end to described first throttle element (3) and described compressor (1) and each heat source side heat exchange unit (4，5) the connection between entrance switches over，Make described at least two heat source side heat exchange unit (4，5) some the heat source side heat exchange units (4 in，5) connect with described first throttle element (3)，To realize heating circulation as evaporation endothermic group，And make all the other heat source side heat exchange units (4，5) connect with the exhaust end of described compressor (1)，To carry out conducting self-heating as heating group.
- 2. air conditioning system according to claim 1, it is characterized in that, described switch unit can in described air conditioning system running, to described at least two heat source side heat exchange unit (4,5) each heat source side heat exchange unit (4 in, 5) corresponding operational group switches over, to realize the conducting self-heating of all heat source side heat exchange units (4,5).
- 3. air conditioning system according to claim 1, it is characterised in that be additionally provided with, on described secondary working medium pipeline, the second section fluid element (7) carrying out reducing pressure by regulating flow for the gases at high pressure that described compressor (1) is discharged.
- 4. air conditioning system according to claim 3, it is characterised in that described second section fluid element (7) includes capillary tube.
- 5. air conditioning system according to claim 1, it is characterized in that, described first throttle element (3) includes electric expansion valve, by the aperture of described electric expansion valve being regulated the working medium flow that could alter that the exhaust end of described compressor (1) leads to the heat source side heat exchange unit (4,5) as heating group.
- 6. air conditioning system according to claim 5, it is characterized in that, also include controller and temperature sensing unit, described controller carries out signal with described temperature sensing unit and described electric expansion valve respectively and is connected, the aperture of described electric expansion valve is adjusted by the own temperature for the compressor exhaust temperature detected by described temperature sensing unit with as the heat source side heat exchange unit (4,5) of heating group.
- 7. air conditioning system according to claim 6, it is characterised in that described temperature sensing unit includes:First temperature sensor, is arranged on the exhaustor of described compressor (1), is used for detecting described compressor exhaust temperature；Second temperature sensor, is arranged on described heat source side heat exchange unit (4,5), for detecting the own temperature of the heat source side heat exchange unit (4,5) as heating group.
- null8. air conditioning system according to claim 1，It is characterized in that，Described switch unit includes check valve (8a，8b) with stop valve (9a，9b)，Described check valve (8a，8b) it is arranged on described first throttle element (3) and each heat source side heat exchange unit (4，5) on every between entrance main working medium pipeline，And described check valve (8a，Outlet 8b) and described heat source side heat exchange unit (4，5) entrance connection，Described stop valve (9a，9b) it is arranged on exhaust end and each heat source side heat exchange unit (4 of described compressor (1)，5) on every between entrance secondary working medium pipeline，By to described stop valve (9a，Being turned on and off 9b) realize to the exhaust end of described first throttle element (3) and described compressor (1) respectively with each heat source side heat exchange unit (4，5) switching control of connected relation between entrance.
- 9. air conditioning system according to claim 1, it is characterized in that, described switch unit is reversal valve (9), two imports of described reversal valve (9) connect with the exhaust end of described first throttle element (3) and described compressor (1) respectively, multiple outlets of described reversal valve (9) respectively with each heat source side heat exchange unit (4, 5) entrance connection, by the working position of described reversal valve (9) is switched realize the exhaust end to described first throttle element (3) and described compressor (1) respectively with each heat source side heat exchange unit (4, 5) switching control of connected relation between entrance.
- 10. air conditioning system according to claim 1, it is characterized in that, described switch unit is at least two three-way diverter valve (9c, 9d), described at least two three-way diverter valve (9c, two imports 9d) connect with the exhaust end of described first throttle element (3) and described compressor (1) respectively, described at least two three-way diverter valve (9c, outlet 9d) respectively with each heat source side heat exchange unit (4, 5) entrance connection, by to described at least two three-way diverter valve (9c, working position switching 9d) realize to the exhaust end of described first throttle element (3) and described compressor (1) respectively with each heat source side heat exchange unit (4, 5) switching control of connected relation between entrance.
- 11. air conditioning system according to claim 1, it is characterised in that described use side heat exchanger (2) is full-liquid type case tube heat exchanger, and described heat source side heat exchanger is air-cooled finned heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620134440.0U CN205403229U (en) | 2016-02-22 | 2016-02-22 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620134440.0U CN205403229U (en) | 2016-02-22 | 2016-02-22 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
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| CN205403229U true CN205403229U (en) | 2016-07-27 |
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| CN105571192A (en) * | 2016-02-22 | 2016-05-11 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105571192A (en) * | 2016-02-22 | 2016-05-11 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
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