CN104180442A - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN104180442A CN104180442A CN201410460913.1A CN201410460913A CN104180442A CN 104180442 A CN104180442 A CN 104180442A CN 201410460913 A CN201410460913 A CN 201410460913A CN 104180442 A CN104180442 A CN 104180442A
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- conditioning system
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 91
- 239000003507 refrigerant Substances 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims description 49
- 238000005057 refrigeration Methods 0.000 claims description 19
- 230000000306 recurrent effect Effects 0.000 claims description 18
- 238000005338 heat storage Methods 0.000 abstract 7
- 239000007788 liquid Substances 0.000 description 35
- 230000001276 controlling effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 238000010257 thawing Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000012369 In process control Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010965 in-process control Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides an air conditioning system. The air conditioning system comprises an indoor heat exchanger, a heat storage tank and a control valve group, wherein the indoor heat exchanger, the heat storage tank and the control valve group are connected to an air conditioning pipeline, and the control valve group can selectively have the following three states: the control heat storage tank is connected with the indoor heat exchanger in series; or controlling the heat storage tank to be connected with the indoor heat exchanger in parallel; or the heat storage tank is controlled to be isolated from the refrigerant circulation flow path in the heating circulation state and the refrigerant circulation flow path in the refrigerating circulation state of the air conditioning system. By using the air conditioning system, when the air conditioning system works, the heat storage tank can be in different working states according to actual working requirements, and the utilization rate of the heat storage tank is improved.
Description
Technical field
The present invention relates to air conditioner technical field, more specifically, relate to a kind of air-conditioning system.
Background technology
Among existing air-conditioning system, heat-accumulator tank is only connected with indoor set or only use in parallel, when while heating, heat-accumulator tank absorbs heat for defrosting, uses.This air-conditioning system is low to the utilization rate of heat-accumulator tank, and adopts heat-accumulator tank Defrost mode, easily causes to heat after defrosting to start and can absorption portion heat causes the indoor set leaving air temp defect such as slow that rises because of heat-accumulator tank.
Summary of the invention
The present invention aims to provide a kind of air-conditioning system, to solve the low problem of heat-accumulator tank utilization rate of the prior art.
For solving the problems of the technologies described above, the invention provides a kind of air-conditioning system, comprise the indoor heat exchanger, heat-accumulator tank and the control valve group that are connected on air-conditioning duct, control valve group selectively has following three kinds of states: control heat-accumulator tank and connect with indoor heat exchanger; Or it is in parallel with indoor heat exchanger to control heat-accumulator tank; Or the refrigerant circulation stream and the refrigerant circulation stream under kind of refrigeration cycle state that heat under recurrent state of controlling heat-accumulator tank and air-conditioning system are isolated.
Further, air-conditioning system also comprises compressor, cross valve, outdoor heat exchanger and first throttle element, wherein, cross valve has the first valve port, the second valve port, the 3rd valve port and the 4th valve port, air-conditioning system comprises when kind of refrigeration cycle state, the first valve port is communicated with the second valve port and the 3rd valve port is communicated with the 4th valve port, and air-conditioning system is when heating recurrent state, and the first valve port is communicated with the 4th valve port and the second valve port is communicated with the 3rd valve port; The outlet of compressor is communicated with the first valve port, and the entrance of compressor is communicated with the 3rd valve port; The second valve port is communicated with the 4th valve port by the first pipeline, and outdoor heat exchanger, first throttle element and indoor heat exchanger are successively set on the first pipeline from the direction of the second valve port to the four valve ports; Heat-accumulator tank comprises the first port, the 3rd port, the second port and the 4th port, and the first port is communicated with the second port, and the 3rd port is communicated with the 4th port, and the first port is communicated with the port away from outdoor heat exchanger of first throttle element by second pipe; The second port is communicated with the port away from first throttle element of indoor heat exchanger by the 3rd pipeline, and the second port is communicated with the port of the close first throttle element of indoor heat exchanger by the 4th pipeline; The 3rd port is communicated with the port away from first throttle element of indoor heat exchanger by the 5th pipeline, and the 4th port is communicated with the 4th valve port by the 6th pipeline; Control valve group comprises: the first control valve, and the first control valve is arranged on the pipeline between first throttle element and indoor heat exchanger to control the break-make of this pipeline; The second control valve, the second control valve is arranged on the 4th pipeline to control the break-make of this pipeline; The 3rd control valve, the 3rd control valve is arranged on the 5th pipeline to control the break-make of this pipeline; The 4th control valve, the 4th control valve is arranged on the pipeline between indoor heat exchanger and the 4th valve port to control the break-make of this pipeline; Second section fluid element, second section fluid element is arranged on the 3rd pipeline.
Further, control valve group also comprises check valve, and check valve is arranged on the 6th pipeline.
Further, air-conditioning system also comprises control centre, control centre control the first control valve, the second control valve, the 3rd control valve, the 4th control valve and second section fluid element open and-shut mode so that heat-accumulator tank and indoor heat exchanger serial or parallel connection or make heat-accumulator tank and the refrigerant circulation stream and the refrigerant circulation stream under kind of refrigeration cycle state that heat under recurrent state of air-conditioning system isolated.
Further, control centre controls the first control valve, the second control valve, the 4th control valve and all closes, and when controlling second section fluid element and the 3rd control valve and all opening, indoor heat exchanger is connected with heat-accumulator tank.
Further, control centre controls the first control valve, the second control valve, the 3rd control valve and all closes, and when controlling second section fluid element and the 4th control valve and all opening, indoor heat exchanger is connected with heat-accumulator tank.
Further, control centre controls the first control valve, the second control valve and the 4th control valve and all opens, and when controlling second section fluid element and the 3rd control valve and all closing, indoor heat exchanger is in parallel with heat-accumulator tank.
Further, control centre controls the first control valve and the 4th control valve is all opened, and when control the second control valve, the 3rd control valve and second section fluid element are closed, the refrigerant circulation stream and the refrigerant circulation stream under kind of refrigeration cycle state that heat under recurrent state of heat-accumulator tank and air-conditioning system are isolated.
Further, air-conditioning system also comprises defrost cycle state, and control centre controls the first control valve, the 3rd control valve and second section fluid element and all closes, and when controlling the second control valve and the 4th control valve and opening, air-conditioning system is in defrost cycle state.
Apply technical scheme of the present invention, owing to control valve group being set in air-conditioning system controlling the pipeline of air-conditioning system, and then heat-accumulator tank is connected with indoor heat exchanger or in parallel with indoor heat exchanger, or make to quit work in the refrigerant circulation stream of heat-accumulator tank under heating recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state.When air-conditioning system is worked, can according to actual work requirements, make heat-accumulator tank in different duties, improved the utilization rate of heat-accumulator tank.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the annexation figure of air-conditioning system of the present invention;
Fig. 2 has schematically shown the front view of air-conditioning system of the present invention when the first duty;
Fig. 3 has schematically shown the front view of air-conditioning system of the present invention when the second duty;
Fig. 4 has schematically shown the front view of air-conditioning system of the present invention when the 3rd duty;
Fig. 5 has schematically shown the front view of air-conditioning system of the present invention when the 4th duty;
Fig. 6 has schematically shown the front view of air-conditioning system of the present invention when the 5th duty;
Fig. 7 has schematically shown the front view of air-conditioning system of the present invention when the 6th duty; And
Fig. 8 has schematically shown the front view of air-conditioning system of the present invention when the 7th duty.
Description of reference numerals: 1, compressor; 2, cross valve; 21, the first valve port; 22, the second valve port; 23, the 3rd valve port; 24, the 4th valve port; 3, outdoor heat exchanger; 4, first throttle element; 5, heat-accumulator tank; 51, the first port; 52, the second port; 53, the 3rd port; 54, the 4th port; 6, second section fluid element; 7, the first control valve; 8, indoor heat exchanger; 9, the second control valve; 10, the 3rd control valve; 11, the 4th control valve; 12, check valve; 13, the first pipeline; 14, second pipe; 15, the 3rd pipeline; 16, the 4th pipeline; 17, the 5th pipeline; 18, the 6th pipeline; 19, gas-liquid separator.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Shown in Figure 1, according to embodiments of the invention, provide a kind of air-conditioning system.This air-conditioning system comprises compressor 1, cross valve 2, outdoor heat exchanger 3, first throttle element 4, heat-accumulator tank 5, indoor heat exchanger 8 and control valve group, and wherein, cross valve 2 has the first valve port 21, the second valve port 22, the 3rd valve port 23 and the 4th valve port 24.
Air-conditioning system comprises kind of refrigeration cycle state and heats recurrent state, when air-conditioning system is in kind of refrigeration cycle state lower time, the first valve port 21 of cross valve 2 is communicated with the second valve port 22 and the 3rd valve port 23 is communicated with the 4th valve port 24, when air-conditioning system is when heating recurrent state, the first valve port 21 of cross valve 2 is communicated with the 4th valve port 24 and the second valve port 22 is communicated with the 3rd valve port 23.
Refer again to shown in Fig. 1, the outlet of compressor 1 is communicated with the first valve port 21, and the entrance of compressor 1 is communicated with the 3rd valve port 23; The second valve port 22 of cross valve 2 is communicated with the 4th valve port 24 of cross valve 2 by the first pipeline 13, and outdoor heat exchanger 3, first throttle element 4 and indoor heat exchanger 8 direction from the second valve port 22 to the 4th valve port 24 is successively set on the first pipeline 13; Heat-accumulator tank 5 comprises the first port 51, the 3rd port 53, the second port 52 and the 4th port 54, the first port 51 is communicated with the second port 52, the 3rd port 53 is communicated with the 4th port 54, and the first port 51 is communicated with the port away from outdoor heat exchanger 3 of first throttle element 4 by second pipe 14; The second port 52 is communicated with the port away from first throttle element 4 of indoor heat exchanger 8 by the 3rd pipeline 15, and the second port 52 is communicated with the port of the close first throttle element 4 of indoor heat exchanger 8 by the 4th pipeline 16; The 3rd port 53 is communicated with the port away from first throttle element 4 of indoor heat exchanger 8 by the 5th pipeline 17, and the 4th port 54 is communicated with the 4th valve port 24 by the 6th pipeline 18; Control valve group is connected on the pipeline between the second valve port 22 and the 4th valve port 24, and the control by control valve group makes heat-accumulator tank 5 with indoor heat exchanger 8 serial or parallel connections or makes heat-accumulator tank 5 isolated with the refrigerant circulation stream and the refrigerant circulation stream under kind of refrigeration cycle state that heat under recurrent state of air-conditioning system.
In the present embodiment, heat-accumulator tank 5 is set to have four ports, and four ports of heat-accumulator tank 5 are connected in air-conditioning system by second pipe 14, the 3rd pipeline 15, the 4th pipeline 16, the 5th pipeline 17 and the 6th pipeline 18, and the pipeline that control valve group is controlled air-conditioning system is set in air-conditioning system, and then heat-accumulator tank 5 is connected with indoor heat exchanger 8 or in parallel with indoor heat exchanger, or make to quit work in the refrigerant circulation stream of heat-accumulator tank 5 under heating recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state.When air-conditioning system is worked, can according to actual work requirements, make heat-accumulator tank 5 in different duties, improved the utilization rate of heat-accumulator tank 5.
Preferably, control valve group comprises the first control valve 7, the second control valve 9, the 3rd control valve 10 and the 4th control valve 11.Wherein, the first control valve 7 is arranged on the pipeline between first throttle element 4 and indoor heat exchanger 8 to control the break-make of this pipeline; The second control valve 9 is arranged on the 4th pipeline 16 to control the break-make of this pipeline; The 3rd control valve 10 is arranged on the 5th pipeline 17 to control the break-make of this pipeline; The 4th control valve 11 is arranged on the pipeline between indoor heat exchanger 8 and the 4th valve port 24 to control the break-make of this pipeline.In real work, by controlling the switching of the first control valve 7, the second control valve 9, the 3rd control valve 10 and the 4th control valve 11, make heat-accumulator tank 5 with indoor heat exchanger 8 series, parallel or make heat-accumulator tank 5 isolated with the refrigerant circulation stream and the refrigerant circulation stream under kind of refrigeration cycle state that heat under recurrent state of air-conditioning system.More preferably, the first control valve 7, the second control valve 9, the 3rd control valve 10 and the 4th control valve 11 in the present embodiment are magnetic valve, are convenient to realize automatic control.
Preferably, the control valve group of the present embodiment comprises and also comprises second section fluid element 6, and this second section fluid element 6 is arranged on the 3rd pipeline 15, to entering indoor heat exchanger 8 from heat-accumulator tank 5 or carrying out throttling processing from the fluid that indoor heat exchanger 8 enters heat-accumulator tank 5.More preferably, second section fluid element 6 and first throttle element 4 in the present embodiment are electric expansion valve, simple in structure, are convenient to realize.
Preferably, the control valve group of the present embodiment also comprises check valve 12, and this check valve 12 is arranged on the 6th pipeline 18, prevents that the fluid in cross valve 2 is back in heat-accumulator tank 5.
Air-conditioning system of the present invention also comprises control centre's (not shown), this control centre control the first control valve 7, the second control valve 9, the 3rd control valve 10, the 4th control valve 11 and second section fluid element 6 open and-shut mode so that heat-accumulator tank 5 with indoor heat exchanger 8 serial or parallel connections or heat-accumulator tank 5 is quit work in heating recurrent state and kind of refrigeration cycle state.In the present embodiment, control centre can realize by logic circuit according to actual demand for control.In other embodiments of the invention, control centre can also be set, and the direct open and-shut mode of controlling according to demand the first control valve 7, the second control valve 9, the 3rd control valve 10, the 4th control valve 11 and second section fluid element 6 is convenient to realize automatic control.
According to the real work demand of air-conditioning system, enumerate the concrete demand for control to the first control valve 7, the second control valve 9, the 3rd control valve 10, the 4th control valve 11 and second section fluid element 6 below:
(1) make air-conditioning system in the first duty, had cold duty
Shown in Figure 2, the realization in figure represents to have the refrigerant pipe of HTHP, and dotted line represents to have the refrigerant pipe of low-temp low-pressure.When needs make air-conditioning system when crossing cold duty, by control centre or manually control the first control valve 7, the second control valve 9, the 4th control valve 11 and all close, second section fluid element 6 is opened, and controls the 3rd control valve 10 and open, now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.At this moment make first throttle element 4 step numbers open maximum, second section fluid element 6 is normally opened, shown in Fig. 2, when air-conditioning system refrigerating operaton, high temperature and high pressure gas is discharged from compressor 1, through cross valve 2, entering outdoor heat exchanger 3 carries out exchange heat and is condensed into high temperature high pressure liquid, high temperature high pressure liquid first throttle element 4 (first throttle element 4 standard-sized sheets now of flowing through, without restriction effect), entering heat-accumulator tank 5 carries out secondary and is cooled to subcooled liquid, through second section fluid element 6 reducing pressure by regulating flows, form low-temp low-pressure liquid again, low-temp low-pressure liquid enters indoor heat exchanger 8 and carries out exchange heat, become low-temp low-pressure gas or gas-fluid two-phase mixture, overheated through the 3rd control valve 10 heat-accumulator tank 5 of flowing through again, through check valve 12, enter cross valve 2 again, through the gas-liquid separator 19 being arranged in the pipeline between compressor 1 and the 3rd valve port 23, carry out separation, low-temp low-pressure gas is inhaled into compressor 1 and completes kind of refrigeration cycle.Visible, according to air-conditioning system of the present invention, can so that heat-accumulator tank 5 air-conditioning system heat recurrent state process in make subcooler, thereby make air-conditioning system there is cold effect.
(2) make air-conditioning system in the second duty, without crossing cold duty
Shown in Figure 3, the realization in figure represents to have the refrigerant pipe of HTHP, and dotted line represents to have the refrigerant pipe of low-temp low-pressure.When needs make air-conditioning system when nothing is crossed cold duty, by control centre or manually control the first control valve 7, the second control valve 9, the 3rd control valve 10 and all close, and control second section fluid element 6 is opened with the 4th control valve 11 and is opened, and now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.First throttle element 4 step numbers are opened maximum, second section fluid element 6 is normally controlled, during cooling system operation, high temperature and high pressure gas is discharged from compressor 1, through cross valve 2, entering outdoor heat exchanger 3 carries out exchange heat and is condensed into high temperature high pressure liquid, high temperature high pressure liquid first throttle element 4 (the first throttle element standard-sized sheet now of flowing through, without restriction effect) enter heat-accumulator tank 5 (now without cross cold effect), through second section fluid element 6 reducing pressure by regulating flows, form low-temp low-pressure liquid again, low-temp low-pressure liquid enters indoor heat exchanger 8 and carries out exchange heat, become low-temp low-pressure gas or gas-fluid two-phase mixture, again through the 4th control valve 11 cross valve 2 of flowing through, enter gas-liquid separator 19 and carry out separation, low-temp low-pressure gas is inhaled into compressor 1 and completes a kind of refrigeration cycle.Visible, thereby make subcooler by the control shielding heat-accumulator tank 5 of valve in a kind of process of refrigerastion of the changeable one-tenth of the present invention, realize without the air-conditioning system of crossing cold effect.
(3) make air-conditioning system in the 3rd duty, heat process serially linked heat accumulators system duty
Shown in Figure 4, the realization in figure represents to have the refrigerant pipe of HTHP, and dotted line represents to have the refrigerant pipe of low-temp low-pressure.When needs make air-conditioning system when heating process serially linked heat accumulators system duty, by control centre or manually control by control centre or manually control the first control valve 7, the second control valve 9, the 3rd control valve 10 and all close, and control second section fluid element 6 and the 4th control valve 11 are all opened, now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.Second section fluid element 6 step numbers are opened maximum, first throttle element 4 is normally controlled, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, through cross valve 2, by the 4th control valve 11, entering indoor heat exchanger 8 carries out exchange heat and is condensed into high temperature high pressure liquid, the high temperature high pressure liquid second section fluid element 6 of flowing through enters heat-accumulator tank 5, through first throttle element 4 reducing pressure by regulating flows, form low-temp low-pressure liquid again, low-temp low-pressure liquid enters outdoor heat exchanger 3 and carries out exchange heat, become low-temp low-pressure gas or gas-fluid two-phase mixture, again through cross valve 2, through gas-liquid separator 19, carry out separation, low-temp low-pressure gas is inhaled into compressor and completes one and heat circulation.Visible, the changeable one-tenth of the present invention is a kind of to be heated in process control by valve and makes heat-accumulator tank 5 use of connecting with indoor heat exchanger 8, the air-conditioning system of the heat that heat-accumulator tank 5 absorbs for defrosting.
(4) make air-conditioning system in the 4th duty, the process that heats hold over system duty in parallel
Shown in Figure 5, the realization in figure represents to have the refrigerant pipe of HTHP, and dotted line represents to have the refrigerant pipe of low-temp low-pressure.When needs make air-conditioning system when heating process hold over system duty in parallel, by control centre or manually center control the first control valve 7, the second control valve 9, the 4th control valve 11 and all open, second section fluid element 6 is closed, and controlling the 3rd control valve 10 closes, now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.Second section fluid element 6 shuts, first throttle element 4 is normally controlled, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, through cross valve 2, by the 4th control valve 11 parts, entering indoor heat exchanger 8 carries out exchange heat and is condensed into high temperature high pressure liquid, another part enters heat-accumulator tank 5 by the second control valve 9 and is condensed into high temperature high pressure liquid, high temperature high pressure liquid behind two-way interflow forms low-temp low-pressure liquid through first throttle element 4 reducing pressure by regulating flows again, low-temp low-pressure liquid enters outdoor heat exchanger 3 and carries out exchange heat, become low-temp low-pressure gas or gas-fluid two-phase mixture, again through cross valve 2, through gas-liquid separator 19, carry out separation, low-temp low-pressure gas is inhaled into compressor 1 and completes one and heat circulation.Visible, the changeable one-tenth of the present invention is a kind of to be heated the control by valve in process and makes heat-accumulator tank 5 use in parallel with indoor heat exchanger 8, the air-conditioning system of the heat that heat-accumulator tank 5 absorbs for defrosting.
(5) make air-conditioning system in the 5th duty, the process that heats is without hold over system duty
Shown in Figure 6, the realization in figure represents to have the refrigerant pipe of HTHP, and dotted line represents to have the refrigerant pipe of low-temp low-pressure.When needs make air-conditioning system when heating process without hold over system duty, by control centre or manually center control that control centre controls the first control valve 7 and the 4th control valve 11 is all opened, and controlling the second control valve 9, the 3rd control valve 10 and second section fluid element 6 closes, now, heat-accumulator tank 5 quits work in heating recurrent state and kind of refrigeration cycle state.Second section fluid element 6 shuts, first throttle element 4 is normally controlled, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, through cross valve 2, by the 4th control valve 11, entering indoor heat exchanger 8 carries out exchange heat and is condensed into high temperature high pressure liquid, high temperature high pressure liquid forms low-temp low-pressure liquid through first throttle element 4 reducing pressure by regulating flows after flowing through the first control valve 7 again, low-temp low-pressure liquid enters outdoor heat exchanger 3 and carries out exchange heat, become low-temp low-pressure gas or gas-fluid two-phase mixture, again through cross valve 2, through gas-liquid separator 19, carry out separation, low-temp low-pressure gas is inhaled into compressor 1 and completes and heat circulation.Visible, a kind of air-conditioning system that shields heat-accumulator tank 5 in process by the control of valve that heats of the changeable one-tenth of the present invention.
(6) make air-conditioning system in the 6th duty, i.e. cross valve 2 commutation thermal storage defrosting recurrent state duties
Shown in Figure 7, the realization in figure represents to have the refrigerant pipe of HTHP, and dotted line represents to have the refrigerant pipe of low-temp low-pressure.When needs make air-conditioning system when heating process cross valve commutation thermal storage defrosting duty, by control centre or manual center, controlling the first control valve 7, the 3rd control valve 10 and second section fluid element 6 all closes, and controlling the second control valve 9 and the 4th control valve 11 opens, now, air-conditioning system is in defrost cycle state.First throttle element 4 is normally controlled, second section fluid element 6 steps shut, during system Defrost operation, high temperature and high pressure gas is discharged from compressor 1, through cross valve 2, entering outdoor heat exchanger 3 carries out exchange heat and is condensed into high temperature high pressure liquid, the high temperature high pressure liquid first throttle element 4 of flowing through carries out reducing pressure by regulating flow and enters heat-accumulator tank 5 and absorb heats and become low-temp low-pressure gas or gas-fluid two-phase mixture, again through the second control valve 9, the 4th control valve 11, enter cross valve 2, through gas-liquid separator 19, carry out separation, low-temp low-pressure gas is inhaled into compressor 1 and completes a defrost cycle.The air-conditioning system visible, the control by valve in a kind of defrost process of the changeable one-tenth of the present invention utilizes the heat of heat-accumulator tank 5 to carry out defrost, and the refrigerant that needn't make low-temp low-pressure through evaporimeter and in absorption chamber heat evaporate, affect user's comfortableness.
(7) make air-conditioning system in the 7th duty, i.e. cross valve 2 reverse cycle defrost duty not
Shown in Figure 8, the realization in figure represents to have the refrigerant pipe of HTHP, and dotted line represents to have the refrigerant pipe of low-temp low-pressure.When needs make air-conditioning system not commutate thermal storage defrosting working state of system in heating process cross valve 2, by control centre or manually center control the first control valve 7, the second control valve 9, the 3rd control valve 10 and all close, and controlling the 4th control valve 11 opens, now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.First throttle element 4 step numbers are opened maximum, second section fluid element 6 is normally controlled, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, through cross valve 2, by the 4th control valve 11, entering indoor heat exchanger 8 carries out exchange heat and is condensed into high temperature high pressure liquid, high temperature high pressure liquid second section fluid element 6 throttlings of flowing through become low-temp low-pressure liquid to enter heat-accumulator tank 5 heat absorption, through 4 throttlings of first throttle element, enter outdoor heat exchanger 3 again and carry out exchange heat, become low-temp low-pressure gas or gas-fluid two-phase mixture, again through cross valve 2, through gas-liquid separator 19, carry out separation, low-temp low-pressure gas is inhaled into compressor 1 and completes one and heat defrost circulation.Visible, the changeable one-tenth of the present invention is a kind of to be heated in process control by valve and utilizes the temperature of the heat outdoor heat exchanger 3 of heat-accumulator tank 5 to carry out the do not commutate air-conditioning system of defrost of cross valve 2.
According to embodiments of the invention, can know, the present invention can be by controlling the switching of carrying out different system with closure of opening of magnetic valve group, electric expansion valve; During refrigerating operaton, heat-accumulator tank is used as subcooler; In process of refrigerastion, alternative was used cooling system and was not used cooling system; After heating and utilizing thermal storage defrosting mode to defrost to finish, first adopt and heat process without hold over system after heating startup, after N minute, switch to again the system with heat accumulation function.
The present invention can be achieved as follows technique effect: freeze and heat the effect that all makes full use of heat-accumulator tank, during refrigeration, heat-accumulator tank is done subcooler use, also can use as required cooling system to increase cold effect or do not use cooling system simultaneously.During heating operation, by the control of valve, switch different systems, the advantage (defrosting time is short, low pressure is higher) that keeps original thermal storage defrosting, make up because adopt regenerative apparatus, and cause to heat after defrosting to start, can absorption portion heat cause the indoor set leaving air temp defect such as slow that rises because of heat-accumulator tank.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. an air-conditioning system, is characterized in that, comprises the indoor heat exchanger (8), heat-accumulator tank (5) and the control valve group that are connected on air-conditioning duct, and described control valve group selectively has following three kinds of states:
Controlling described heat-accumulator tank (5) connects with described indoor heat exchanger (8); Or
Control described heat-accumulator tank (5) in parallel with described indoor heat exchanger (8); Or
Control described heat-accumulator tank (5) isolated with the refrigerant circulation stream and the refrigerant circulation stream under kind of refrigeration cycle state that heat under recurrent state of described air-conditioning system.
2. air-conditioning system according to claim 1, is characterized in that, described air-conditioning system also comprises compressor (1), cross valve (2), outdoor heat exchanger (3) and first throttle element (4), wherein,
Described cross valve (2) has the first valve port (21), the second valve port (22), the 3rd valve port (23) and the 4th valve port (24), described air-conditioning system comprises when described kind of refrigeration cycle state, described the first valve port (21) is communicated with the second valve port (22) and described the 3rd valve port (23) is communicated with described the 4th valve port (24), described air-conditioning system is in described while heating recurrent state, and described the first valve port (21) is communicated with described the 4th valve port (24) and described the second valve port (22) is communicated with described the 3rd valve port (23);
The outlet of described compressor (1) is communicated with described the first valve port (21), and the entrance of described compressor (1) is communicated with described the 3rd valve port (23);
Described the second valve port (22) is communicated with described the 4th valve port (24) by the first pipeline (13), and described outdoor heat exchanger (3), described first throttle element (4) and described indoor heat exchanger (8) direction from described the second valve port (22) to described the 4th valve port (24) is successively set on described the first pipeline (13);
Described heat-accumulator tank (5) comprises the first port (51), the 3rd port (53), the second port (52) and the 4th port (54), described the first port (51) is communicated with described the second port (52), described the 3rd port (53) is communicated with described the 4th port (54), and described the first port (51) is communicated with the port away from described outdoor heat exchanger (3) of described first throttle element (4) by second pipe (14); Described the second port (52) is communicated with the port away from described first throttle element (4) of described indoor heat exchanger (8) by the 3rd pipeline (15), and described the second port (52) is communicated with the port of the close described first throttle element (4) of described indoor heat exchanger (8) by the 4th pipeline (16); Described the 3rd port (53) is communicated with the port away from described first throttle element (4) of described indoor heat exchanger (8) by the 5th pipeline (17), and described the 4th port (54) is communicated with described the 4th valve port (24) by the 6th pipeline (18);
Described control valve group comprises:
The first control valve (7), described the first control valve (7) is arranged on the pipeline between described first throttle element (4) and described indoor heat exchanger (8) to control the break-make of this pipeline;
The second control valve (9), it is upper to control the break-make of this pipeline that described the second control valve (9) is arranged on described the 4th pipeline (16);
The 3rd control valve (10), it is upper to control the break-make of this pipeline that described the 3rd control valve (10) is arranged on described the 5th pipeline (17);
The 4th control valve (11), described the 4th control valve (11) is arranged on the pipeline between described indoor heat exchanger (8) and described the 4th valve port (24) to control the break-make of this pipeline;
Second section fluid element (6), described second section fluid element (6) is arranged on described the 3rd pipeline (15).
3. air-conditioning system according to claim 2, is characterized in that, described control valve group also comprises check valve (12), and described check valve (12) is arranged on described the 6th pipeline (18).
4. air-conditioning system according to claim 2, it is characterized in that, described air-conditioning system also comprises control centre, and described control centre controls the open and-shut mode of described the first control valve (7), described the second control valve (9), described the 3rd control valve (10), described the 4th control valve (11) and described second section fluid element (6) so that described heat-accumulator tank (5) and described indoor heat exchanger (8) serial or parallel connection or make described heat-accumulator tank (5) isolated with the refrigerant circulation stream and the refrigerant circulation stream under described kind of refrigeration cycle state that heat under recurrent state described in described air-conditioning system.
5. air-conditioning system according to claim 4, it is characterized in that, described control centre controls described the first control valve (7), described the second control valve (9), described the 4th control valve (11) and all closes, and when controlling described second section fluid element (6) and described the 3rd control valve (10) and all opening, described indoor heat exchanger (8) is connected with described heat-accumulator tank (5).
6. air-conditioning system according to claim 4, it is characterized in that, described control centre controls described the first control valve (7), described the second control valve (9), described the 3rd control valve (10) and all closes, and when controlling described second section fluid element (6) and described the 4th control valve (11) and all opening, described indoor heat exchanger (8) is connected with described heat-accumulator tank (5).
7. air-conditioning system according to claim 4, it is characterized in that, described control centre controls described the first control valve (7), described the second control valve (9) and described the 4th control valve (11) and all opens, and when controlling described second section fluid element (6) and described the 3rd control valve (10) and all closing, described indoor heat exchanger (8) is in parallel with described heat-accumulator tank (5).
8. air-conditioning system according to claim 4, it is characterized in that, described control centre controls described the first control valve (7) and described the 4th control valve (11) is all opened, and when controlling described the second control valve (9), described the 3rd control valve (10) and described second section fluid element (6) and closing, described heat-accumulator tank (5) is isolated with the refrigerant circulation stream and the refrigerant circulation stream under described kind of refrigeration cycle state that heat under recurrent state described in described air-conditioning system.
9. air-conditioning system according to claim 4, it is characterized in that, described air-conditioning system also comprises defrost cycle state, described control centre controls described the first control valve (7), described the 3rd control valve (10) and described second section fluid element (6) and all closes, and when controlling described the second control valve (9) and described the 4th control valve (11) and opening, described air-conditioning system is in described defrost cycle state.
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| CN201410460913.1A CN104180442B (en) | 2014-09-11 | 2014-09-11 | Air conditioning system |
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| CN201410460913.1A CN104180442B (en) | 2014-09-11 | 2014-09-11 | Air conditioning system |
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| CN104180442B CN104180442B (en) | 2017-04-12 |
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