CN204063308U - Air-conditioning system - Google Patents

Air-conditioning system Download PDF

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Publication number
CN204063308U
CN204063308U CN201420527199.9U CN201420527199U CN204063308U CN 204063308 U CN204063308 U CN 204063308U CN 201420527199 U CN201420527199 U CN 201420527199U CN 204063308 U CN204063308 U CN 204063308U
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CN
China
Prior art keywords
valve
port
control valve
control
conditioning
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Withdrawn - After Issue
Application number
CN201420527199.9U
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Chinese (zh)
Inventor
杨玉生
胡锐
李鹏飞
王永立
杨秀妹
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201420527199.9U priority Critical patent/CN204063308U/en
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Abstract

The utility model provides a kind of air-conditioning system.This air-conditioning system comprises the indoor heat exchanger be connected on air-conditioning duct, heat-accumulator tank and control valve group, and 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 control heat-accumulator tank and air-conditioning system heat the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state isolated.Utilize air-conditioning system of the present utility model, when air-conditioning system works, heat-accumulator tank can be made to be in different duties according to the work requirements of reality, improve the utilization rate of heat-accumulator tank.

Description

Air-conditioning system
Technical field
The utility model relates to air conditioner technical field, more specifically, relates to a kind of air-conditioning system.
Background technology
Among existing air-conditioning system, heat-accumulator tank and indoor set are only connected or only parallel connection uses, and when heating, heat-accumulator tank absorbs heat for use during defrosting.The utilization rate of this air-conditioning system to heat-accumulator tank is low, and adopts heat-accumulator tank Defrost mode, heats the defects such as startup causes the rising of indoor set leaving air temp slow because of heat-accumulator tank meeting absorption portion heat after easily causing defrosting.
Utility model content
The utility model 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 utility model provides a kind of air-conditioning system, comprise the indoor heat exchanger be connected on air-conditioning duct, heat-accumulator tank and control valve group, 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 control heat-accumulator tank and air-conditioning system heat the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state 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 being in kind of refrigeration cycle state, first valve port is communicated with the second valve port and the 3rd valve port is communicated with the 4th valve port, and when air-conditioning system is in and heats recurrent state, 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; 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 second valve port to the direction of the 4th valve port; 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; 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; 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; Second control valve, the second control valve is arranged on the 4th pipeline to control the break-make of this pipeline; 3rd control valve, the 3rd control valve is arranged on the 5th pipeline to control the break-make of this pipeline; 4th control valve, to control the break-make of this pipeline on the pipeline between the 4th control valve heat exchanger disposed in the interior and the 4th valve port; 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, the open and-shut mode that control centre controls the first control valve, the second control valve, the 3rd control valve, the 4th control valve and second section fluid element with make heat-accumulator tank and indoor heat exchanger serial or parallel connection or make heat-accumulator tank and air-conditioning system heat the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state isolated.
Further, control centre controls the first control valve, the second control valve, the 4th control valve are all closed, and controls second section fluid element and the 3rd control valve when all opening, and 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 are all closed, and controls second section fluid element and the 4th control valve when all opening, and 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 control second section fluid element and the 3rd control valve are all closed, 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 control the second control valve, the 3rd control valve and second section fluid element when closing, heat-accumulator tank and air-conditioning system heat the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state 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 control the second control valve and the 4th control valve are opened, air-conditioning system is in defrost cycle state.
Application the technical solution of the utility model, owing to arranging control valve group within air-conditioning systems to control the pipeline of air-conditioning system, and then heat-accumulator tank is connected or in parallel with indoor heat exchanger with indoor heat exchanger, or heat-accumulator tank is quit work heating in the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state.When air-conditioning system works, heat-accumulator tank can be made to be in different duties according to the work requirements of reality, improve the utilization rate of heat-accumulator tank.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the annexation figure of air-conditioning system of the present utility model;
Fig. 2 diagrammatically illustrates front view when air-conditioning system of the present utility model is in the first duty;
Fig. 3 diagrammatically illustrates front view when air-conditioning system of the present utility model is in the second duty;
Fig. 4 diagrammatically illustrates front view when air-conditioning system of the present utility model is in the 3rd duty;
Fig. 5 diagrammatically illustrates front view when air-conditioning system of the present utility model is in the 4th duty;
Fig. 6 diagrammatically illustrates front view when air-conditioning system of the present utility model is in the 5th duty;
Fig. 7 diagrammatically illustrates front view when air-conditioning system of the present utility model is in the 6th duty; And
Fig. 8 diagrammatically illustrates front view when air-conditioning system of the present utility model is in 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.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Shown in Figure 1, according to embodiment of the present utility model, 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, 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 under kind of refrigeration cycle state, 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 be in heat recurrent state time, 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; 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 are successively set on the first pipeline 13 from the direction of the second valve port 22 to the four valve port 24; Heat-accumulator tank 5 comprises the first port 51, the 3rd port 53, second port 52 and the 4th port 54, first port 51 is communicated with the second port 52,3rd 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; 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; 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, make heat-accumulator tank 5 and indoor heat exchanger 8 serial or parallel connection by the control of control valve group or make heat-accumulator tank 5 and air-conditioning system heat the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state isolated.
In the present embodiment, heat-accumulator tank 5 is set to there are four ports, and four of heat-accumulator tank 5 ports are connected within air-conditioning systems by second pipe 14, the 3rd pipeline 15, the 4th pipeline 16, the 5th pipeline 17 and the 6th pipeline 18, and control valve group is set within air-conditioning systems to control the pipeline of air-conditioning system, and then heat-accumulator tank 5 is connected or in parallel with indoor heat exchanger with indoor heat exchanger 8, or heat-accumulator tank 5 is quit work heating in the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state.When air-conditioning system works, heat-accumulator tank 5 can be made to be in different duties according to the work requirements of reality, improve the utilization rate of heat-accumulator tank 5.
Preferably, control valve group comprises the first control valve 7, second control valve 9, the 3rd control valve 10 and the 4th control valve 11.Wherein, the first control valve 7 be arranged between first throttle element 4 and indoor heat exchanger 8 pipeline on to control the break-make of this pipeline; Second control valve 9 is arranged on the 4th pipeline 16 to control the break-make of this pipeline; 3rd control valve 10 is arranged on the 5th pipeline 17 to control the break-make of this pipeline; To control the break-make of this pipeline on pipeline between 4th control valve 11 heat exchanger 8 disposed in the interior and the 4th valve port 24.In real work, make heat-accumulator tank 5 and indoor heat exchanger 8 series, parallel by the opening and closing controlling the first control valve 7, second control valve 9, the 3rd control valve 10 and the 4th control valve 11 or make heat-accumulator tank 5 and air-conditioning system heat the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state isolated.More preferably, the first control valve 7, 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 heat exchanger 8 enters heat-accumulator tank 5 indoor fluid carries out throttling process.More preferably, the second section fluid element 6 in the present embodiment and first throttle element 4 are electric expansion valve, and structure is simple, 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 the fluid in cross valve 2 to be back in heat-accumulator tank 5.
Air-conditioning system of the present utility model also comprises control centre's (not shown), and the open and-shut mode that this control centre controls the first control valve 7, second control valve 9, the 3rd control valve 10, the 4th control valve 11 and second section fluid element 6 is to make heat-accumulator tank 5 and indoor heat exchanger 8 serial or parallel connection or to make heat-accumulator tank 5 quit work heating in recurrent state and kind of refrigeration cycle state.In the present embodiment, control centre can be realized by logic circuit according to the demand for control of reality.In other embodiments of the present utility model, can not also control centre be set, and directly control the open and-shut mode of the first control valve 7, second control valve 9, the 3rd control valve 10, the 4th control valve 11 and second section fluid element 6 according to demand, be convenient to realize automatic control.
The concrete demand for control to the first control valve 7, second control valve 9, the 3rd control valve 10, the 4th control valve 11 and second section fluid element 6 is enumerated below according to the real work demand of air-conditioning system:
(1) make air-conditioning system be in the first duty, namely have cold duty
Shown in Figure 2, the realization in figure represents the refrigerant pipe with HTHP, and dotted line represents the refrigerant pipe with low-temp low-pressure.When needs make air-conditioning system be in cold duty, all closed by control centre or Non-follow control first control valve 7, second control valve 9, the 4th control valve 11, 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 first throttle element 4 step number is made to open maximum, second section fluid element 6 is normally opened, shown in composition graphs 2, when air-conditioning system refrigerating operaton, high temperature and high pressure gas is discharged from compressor 1, enter outdoor heat exchanger 3 through cross valve 2 to carry out exchange heat and be condensed into high temperature high pressure liquid, high temperature high pressure liquid flows through first throttle element 4 (now first throttle element 4 standard-sized sheet, without restriction effect), enter heat-accumulator tank 5 to carry out cooling twice and become subcooled liquid, Low temperature low pressure liquid is formed again through second section fluid element 6 reducing pressure by regulating flow, Low temperature low pressure liquid enters indoor heat exchanger 8 and carries out exchange heat, become low temperature low pressure gas or gas-fluid two-phase mixture, heat-accumulator tank 5 is flowed through again overheated through the 3rd control valve 10, cross valve 2 is entered again through check valve 12, be separated through being arranged on the gas-liquid separator 19 in the pipeline between compressor 1 and the 3rd valve port 23, low temperature low pressure gas is inhaled into compressor 1 and completes kind of refrigeration cycle.Visible, according to air-conditioning system of the present utility model, heat-accumulator tank 5 can be made to make subcooler heating in recurrent state process of air-conditioning system, thus make air-conditioning system have cold effect.
(2) air-conditioning system is made to be in the second duty, namely without crossing cold duty
Shown in Figure 3, the realization in figure represents the refrigerant pipe with HTHP, and dotted line represents the refrigerant pipe with low-temp low-pressure.When needs make air-conditioning system be in without when crossing cold duty, all closed by control centre or Non-follow control first control valve 7, second control valve 9, the 3rd control valve 10, and control second section fluid element 6 and open and open with the 4th control valve 11, now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.First throttle element 4 step number is opened maximum, second section fluid element 6 normally controls, when cooling system runs, high temperature and high pressure gas is discharged from compressor 1, enter outdoor heat exchanger 3 through cross valve 2 to carry out exchange heat and be condensed into high temperature high pressure liquid, high temperature high pressure liquid flows through first throttle element 4 (now first throttle element standard-sized sheet, without restriction effect) enter heat-accumulator tank 5 (now without crossing cold effect), Low temperature low pressure liquid is formed again through second section fluid element 6 reducing pressure by regulating flow, Low temperature low pressure liquid enters indoor heat exchanger 8 and carries out exchange heat, become low temperature low pressure gas or gas-fluid two-phase mixture, cross valve 2 is flowed through again through the 4th control valve 11, enter gas-liquid separator 19 to be separated, low temperature low pressure gas is inhaled into compressor 1 and completes a kind of refrigeration cycle.Visible, the control shielding heat-accumulator tank 5 by valve in a kind of process of refrigerastion of the changeable one-tenth of the utility model is made subcooler thus realizes the air-conditioning system without crossing cold effect.
(3) air-conditioning system is made to be in the 3rd duty, i.e. heating operations serially linked heat accumulators system duty
Shown in Figure 4, the realization in figure represents the refrigerant pipe with HTHP, and dotted line represents the refrigerant pipe with low-temp low-pressure.When needs make air-conditioning system be in heating operations serially linked heat accumulators system duty, control all to be closed by control centre or Non-follow control first control valve 7, second control valve 9, the 3rd control valve 10 by control centre or Non-follow control, 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 number is opened maximum, first throttle element 4 normally controls, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, after cross valve 2, enter indoor heat exchanger 8 through the 4th control valve 11 carry out exchange heat and be condensed into high temperature high pressure liquid, high temperature high pressure liquid flows through second section fluid element 6 and enters heat-accumulator tank 5, Low temperature low pressure liquid is formed again through first throttle element 4 reducing pressure by regulating flow, Low temperature low pressure liquid enters outdoor heat exchanger 3 and carries out exchange heat, become low temperature low pressure gas or gas-fluid two-phase mixture, again through cross valve 2, be separated through gas-liquid separator 19, low temperature low pressure gas is inhaled into compressor and completes one and heat circulation.Visible, by the control of valve, heat-accumulator tank 5 is connected with indoor heat exchanger 8 in a kind of heating operations of the changeable one-tenth of the utility model and use, the air-conditioning system of heat for defrosting that heat-accumulator tank 5 absorbs.
(4) air-conditioning system is made to be in the 4th duty, i.e. heating operations hold over system duty in parallel
Shown in Figure 5, the realization in figure represents the refrigerant pipe with HTHP, and dotted line represents the refrigerant pipe with low-temp low-pressure.When needs make air-conditioning system be in heating operations parallel connection hold over system duty, control the first control valve 7, second control valve 9 by control centre or manual center, the 4th control valve 11 all opens, second section fluid element 6 is closed, and control the 3rd control valve 10 is closed, now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.Second section fluid element 6 shuts, first throttle element 4 normally controls, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, after cross valve 2, enter indoor heat exchanger 8 through the 4th control valve 11 part carry out exchange heat and be 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 temperature low pressure liquid through first throttle element 4 reducing pressure by regulating flow again, Low temperature low pressure liquid enters outdoor heat exchanger 3 and carries out exchange heat, become low temperature low pressure gas or gas-fluid two-phase mixture, again through cross valve 2, be separated through gas-liquid separator 19, low temperature low pressure gas is inhaled into compressor 1 and completes one and heat circulation.Visible, made by the control of valve in a kind of heating operations of the changeable one-tenth of the utility model that heat-accumulator tank 5 is in parallel with indoor heat exchanger 8 to be used, the air-conditioning system of heat for defrosting that heat-accumulator tank 5 absorbs.
(5) make air-conditioning system be in the 5th duty, namely heating operations is without hold over system duty
Shown in Figure 6, the realization in figure represents the refrigerant pipe with HTHP, and dotted line represents the refrigerant pipe with low-temp low-pressure.When needs make air-conditioning system be in heating operations without hold over system duty, control control centre by control centre or manual center and control the first control valve 7 and the 4th control valve 11 is all opened, and control the second control valve 9, the 3rd control valve 10 and second section fluid element 6 are closed, now, heat-accumulator tank 5 quits work heating in recurrent state and kind of refrigeration cycle state.Second section fluid element 6 shuts, first throttle element 4 normally controls, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, after cross valve 2, enter indoor heat exchanger 8 through the 4th control valve 11 carry out exchange heat and be condensed into high temperature high pressure liquid, high temperature high pressure liquid forms Low temperature low pressure liquid through first throttle element 4 reducing pressure by regulating flow after flowing through the first control valve 7 again, Low temperature low pressure liquid enters outdoor heat exchanger 3 and carries out exchange heat, become low temperature low pressure gas or gas-fluid two-phase mixture, again through cross valve 2, be separated through gas-liquid separator 19, low temperature low pressure gas is inhaled into compressor 1 and completes and heat circulation.Visible, by the air-conditioning system of the control shielding heat-accumulator tank 5 of valve in a kind of heating operations of the changeable one-tenth of the utility model.
(6) make air-conditioning system be in the 6th duty, namely cross valve 2 commutates thermal storage defrosting recurrent state duty
Shown in Figure 7, the realization in figure represents the refrigerant pipe with HTHP, and dotted line represents the refrigerant pipe with low-temp low-pressure.When needs make air-conditioning system be in heating operations cross valve commutation thermal storage defrosting duty, control the first control valve 7, the 3rd control valve 10 and second section fluid element 6 by control centre or manual center all to close, and control the second control valve 9 and the 4th control valve 11 are opened, now, air-conditioning system is in defrost cycle state.First throttle element 4 normally controls, second section fluid element 6 step shuts, during system Defrost operation, high temperature and high pressure gas is discharged from compressor 1, enter outdoor heat exchanger 3 through cross valve 2 to carry out exchange heat and be condensed into high temperature high pressure liquid, high temperature high pressure liquid flows through first throttle element 4 and carries out reducing pressure by regulating flow and enter heat-accumulator tank 5 and absorb heat and become low temperature low pressure gas or gas-fluid two-phase mixture, again through the second control valve 9, 4th control valve 11, enter cross valve 2, be separated through gas-liquid separator 19, low temperature low pressure gas is inhaled into compressor 1 and completes a defrost cycle.Visible, utilize the heat of heat-accumulator tank 5 to carry out the air-conditioning system of defrost by the control of valve in a kind of defrost process of the changeable one-tenth of the utility model, and need not make the refrigerant of low-temp low-pressure through evaporator in absorption chamber heat evaporate, affect user's comfortableness.
(7) air-conditioning system is made to be in the 7th duty, i.e. cross valve 2 not reverse cycle defrost duty
Shown in Figure 8, the realization in figure represents the refrigerant pipe with HTHP, and dotted line represents the refrigerant pipe with low-temp low-pressure.When needs make air-conditioning system be in heating operations cross valve 2 do not commutate thermal storage defrosting working state of system time, control the first control valve 7, second control valve 9 by control centre or manual center, the 3rd control valve 10 all closes, and control the 4th control valve 11 is opened, now, indoor heat exchanger 8 is connected with heat-accumulator tank 5.First throttle element 4 step number is opened maximum, second section fluid element 6 normally controls, during system heating operation, high temperature and high pressure gas is discharged from compressor 1, after cross valve 2, enter indoor heat exchanger 8 through the 4th control valve 11 carry out exchange heat and be condensed into high temperature high pressure liquid, high temperature high pressure liquid flows through second section fluid element 6 throttling and becomes Low temperature low pressure liquid to enter heat-accumulator tank 5 to absorb heat, enter outdoor heat exchanger 3 through first throttle element 4 throttling again and carry out exchange heat, become low temperature low pressure gas or gas-fluid two-phase mixture, again through cross valve 2, be separated through gas-liquid separator 19, low temperature low pressure gas be inhaled into compressor 1 complete one heat defrost circulation.Visible, utilized by the control of valve the temperature of the heat outdoor heat exchanger 3 of heat-accumulator tank 5 to carry out cross valve 2 in a kind of heating operations of the changeable one-tenth of the utility model and not commutate the air-conditioning system of defrost.
Can know according to embodiment of the present utility model, the utility model can by Controlling solenoid valve group, the opening and the closed switching carrying out different system of electric expansion valve; During refrigerating operaton, heat-accumulator tank uses as subcooler; In process of refrigerastion, alternative used cooling system and did not use cooling system; Heat after utilizing thermal storage defrosting mode to defrost to terminate, first adopt heating operations without hold over system after heating startup, after N minute, switch to the system with heat accumulation function again.
The utility model can realize following technique effect: freeze and heat the effect all making full use of heat-accumulator tank, and during refrigeration, heat-accumulator tank does subcooler use, cooling system also can be used as required to increase cold effect or do not use cooling system simultaneously.During heating operation, different systems is switched by the control of valve, keep the advantage of original thermal storage defrosting (defrosting time is short, low pressure is higher), make up because adopt regenerative apparatus, and after causing defrosting, heat the defects such as startup causes because of heat-accumulator tank meeting absorption portion heat the rising of indoor set leaving air temp slow.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (9)

1. an air-conditioning system, is characterized in that, comprise the indoor heat exchanger (8) be connected on air-conditioning duct, heat-accumulator tank (5) and control valve group, described control valve group selectively has following three kinds of states:
Control described heat-accumulator tank (5) to connect 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) and described air-conditioning system heat the refrigerant circulation stream under recurrent state and the refrigerant circulation stream under kind of refrigeration cycle state isolated.
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), second valve port (22), 3rd valve port (23) and the 4th valve port (24), described air-conditioning system comprises when being in described kind of refrigeration cycle state, described first valve port (21) is communicated with the second valve port (22) and described 3rd valve port (23) is communicated with described 4th valve port (24), when heating recurrent state described in described air-conditioning system is in, described first valve port (21) is communicated with described 4th valve port (24) and described second valve port (22) is communicated with described 3rd valve port (23),
The outlet of described compressor (1) is communicated with described first valve port (21), and the entrance of described compressor (1) is communicated with described 3rd valve port (23);
Described second valve port (22) is communicated with described 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) are successively set on described first pipeline (13) from described second valve port (22) to the direction of described 4th valve port (24);
Described heat-accumulator tank (5) comprises the first port (51), the 3rd port (53), the second port (52) and the 4th port (54), described first port (51) is communicated with described second port (52), described 3rd port (53) is communicated with described 4th port (54), and described first port (51) is communicated with by the port away from described outdoor heat exchanger (3) of second pipe (14) with described first throttle element (4); Described 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 second port (52) is communicated with by the port of the 4th pipeline (16) with the close described first throttle element (4) of described indoor heat exchanger (8); Described 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 4th port (54) is communicated with described 4th valve port (24) by the 6th pipeline (18);
Described control valve group comprises:
First control valve (7), described 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;
Second control valve (9), described second control valve (9) is arranged on described 4th pipeline (16) to control the break-make of this pipeline;
3rd control valve (10), described 3rd control valve (10) is arranged on described 5th pipeline (17) to control the break-make of this pipeline;
4th control valve (11), described 4th control valve (11) is arranged on the pipeline between described indoor heat exchanger (8) and described 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 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 6th pipeline (18).
4. air-conditioning system according to claim 2, it is characterized in that, described air-conditioning system also comprises control centre, described control centre controls described first control valve (7), described second control valve (9), described 3rd control valve (10), the open and-shut mode of described 4th control valve (11) and described second section fluid element (6) with make described heat-accumulator tank (5) and described indoor heat exchanger (8) serial or parallel connection or make described heat-accumulator tank (5) with heat the refrigerant circulation stream under recurrent state described in described air-conditioning system and the refrigerant circulation stream under described kind of refrigeration cycle state isolated.
5. air-conditioning system according to claim 4, it is characterized in that, described first control valve (7) of described control centre's control, described second control valve (9), described 4th control valve (11) are all closed, and controlling described second section fluid element (6) and described 3rd control valve (10) when 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 first control valve (7) of described control centre's control, described second control valve (9), described 3rd control valve (10) are all closed, and controlling described second section fluid element (6) and described 4th control valve (11) when 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 first control valve (7), described second control valve (9) and described 4th control valve (11) and all opens, and controlling described second section fluid element (6) and described 3rd control valve (10) when 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 first control valve (7) and described 4th control valve (11) is all opened, and control described second control valve (9), described 3rd control valve (10) and described second section fluid element (6) be when closing, described heat-accumulator tank (5) and the refrigerant circulation stream heated described in described air-conditioning system under recurrent state and the refrigerant circulation stream under described kind of refrigeration cycle state isolated.
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 first control valve (7), described 3rd control valve (10) and described second section fluid element (6) and all closes, and controlling described second control valve (9) and described 4th control valve (11) when opening, described air-conditioning system is in described defrost cycle state.
CN201420527199.9U 2014-09-11 2014-09-11 Air-conditioning system Withdrawn - After Issue CN204063308U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180442A (en) * 2014-09-11 2014-12-03 珠海格力电器股份有限公司 Air conditioning system
WO2019144421A1 (en) * 2018-01-25 2019-08-01 珠海格力电器股份有限公司 Heat pump air conditioning system and control method
US10941955B2 (en) 2017-10-27 2021-03-09 Dometic Sweden Ab Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180442A (en) * 2014-09-11 2014-12-03 珠海格力电器股份有限公司 Air conditioning system
CN104180442B (en) * 2014-09-11 2017-04-12 珠海格力电器股份有限公司 Air conditioning system
US10941955B2 (en) 2017-10-27 2021-03-09 Dometic Sweden Ab Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle
WO2019144421A1 (en) * 2018-01-25 2019-08-01 珠海格力电器股份有限公司 Heat pump air conditioning system and control method

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