CN105157284A - Air conditioner system - Google Patents
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- CN105157284A CN105157284A CN201510519204.0A CN201510519204A CN105157284A CN 105157284 A CN105157284 A CN 105157284A CN 201510519204 A CN201510519204 A CN 201510519204A CN 105157284 A CN105157284 A CN 105157284A
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Abstract
The invention provides an air conditioner system. The air conditioner system comprises a refrigerant circulation flow path formed by communicating a double-cylinder variable volume compressor, a four-way reversing valve, an outdoor heat exchanger, a throttling device and an indoor heat exchanger. The throttling device comprises two refrigerant flow paths connected in parallel. Each refrigerant flow path is provided with a throttling part. At least one refrigerant flow path is provided with a control valve capable of opening or closing the refrigerant flow paths so that when the air conditioner system is in a refrigeration mode and double cylinders of the double-cylinder variable volume compressor are started, the two refrigerant flow paths can be controlled to be both opened; and when the air conditioner system is in the refrigeration mode and the single cylinder of the double-cylinder variable volume compressor is started, one refrigerant flow path can be controlled to be opened. According to the air conditioner system, when high temperature refrigeration needs to be carried out through the air conditioner system, the flow of refrigerant flowing through the throttling device for pressure reduction per unit time can be effectively increased, and accordingly the pressure of the air conditioner system during running of high temperature refrigeration is reduced; and the gas displacement of the double-cylinder variable volume compressor is increased so as to ensure the high-temperature refrigeration effect of the air conditioner system.
Description
Technical field
The present invention relates to air-conditioning technical field, more specifically, relate to a kind of twin-tub transfiguration air-conditioning system having high-temperature refrigeration amount and low-temperature heating capacity concurrently.
Background technology
At present, the existing air-conditioning system with double-cylinder variable-capacity compressor on market, due to the impact by high-temperature refrigeration limiting condition voltage, causes air-conditioning system can not realize twin-tub when freezing and works simultaneously, even if twin-tub works during refrigeration simultaneously, also there is bottleneck in the capacity design of twin-tub; And when twin-tub is opened simultaneously, system pressure is higher, beyond the pressure that system allows, energy consumption is higher simultaneously, causes the high-temperature refrigeration weak effect of air-conditioning system.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
, the object of the invention is to for this reason, provide a kind of pressure when can effectively regulate air-conditioning system to run in pipeline, to have the air-conditioning system of high-temperature refrigeration and low-temperature heating concurrently.
For achieving the above object, the invention provides a kind of throttling arrangement, comprise: double-cylinder variable-capacity compressor, four-way change-over valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger, described double-cylinder variable-capacity compressor, described four-way change-over valve, described outdoor heat exchanger, described throttling arrangement are connected with described indoor heat exchanger and form refrigerant circulation stream; Wherein, described throttling arrangement comprises two and the refrigerant flow connect, refrigerant flow described in each is equipped with restriction, and at least one described refrigerant flow is provided with the control valve that can open or close described refrigerant flow, with be in refrigeration mode in described air-conditioning system and the twin-tub of described double-cylinder variable-capacity compressor is opened time control two described refrigerant flows and all open, control a described refrigerant flow when described air-conditioning system is in refrigeration mode and the single cylinder of described double-cylinder variable-capacity compressor is opened and open.
Air-conditioning system provided by the invention, its throttling arrangement comprises two and the refrigerant flow connect, by controlling the quantity of the refrigerant flow opened in throttling arrangement, the sectional dimension of refrigerant by throttling arrangement can be controlled, thus control the unit interval flow through the cold medium flux that throttling arrangement carries out effective step-down, thus pressure when regulating air-conditioning system to run in pipeline, to ensure high-temperature refrigeration effect and the low-temperature heating effect of air-conditioning system.
Specifically, existing twin-tub transfiguration air-conditioning system, its double-cylinder variable-capacity compressor can not open twin-tub when freezing simultaneously, and when twin-tub is opened simultaneously, system pressure exceeds design permissible value, can affect the high-temperature refrigeration effect of air-conditioning; And air-conditioning system provided by the invention, by utilize in throttling arrangement two and the refrigerant flow connect control air-conditioning system run time pipeline in pressure, thus system pressure when twin-tub runs under reducing refrigeration mode, and then ensure that the high-temperature refrigeration effect of air-conditioning.Particularly, when air-conditioning system is in refrigeration mode and twin-tub is opened simultaneously, system pressure is higher, two refrigerant flows opened by throttling arrangement, and the refrigerant flow connect effectively increases refrigerant by sectional dimension during throttling arrangement article two, thus improve the unit interval and flow through the cold medium flux that throttling arrangement carries out effective step-down, thus the pressure reduced in pipeline, improve capacity when double-cylinder variable-capacity compressor twin-tub is opened simultaneously, thus ensure that the high-temperature refrigeration effect of air-conditioning, breach the bottleneck of traditional double-cylinder variable-capacity compressor capacity; When air-conditioning system is in refrigeration mode and single cylinder is opened, system pressure is in the scope of design permission, now a refrigerant flow only opened by throttling arrangement, the normal operation of air-conditioning system can be ensured, and one of throttling arrangement refrigerant flow is opened, energy consumption during air-conditioning system work effectively can be reduced.Like this, to utilize in throttling arrangement two and the opening and close the pressure effectively regulating air-conditioning system of the refrigerant flow connect, to ensure that the highly effective refrigeration of air-conditioning system runs, thus make air-conditioning system have the effect of high-temperature refrigeration and low-temperature heating concurrently, and there is simple, with low cost, the applicable industrial advantage of mass of structure.
In addition, the air-conditioning system that the above embodiment of the present invention provides also has following additional technical feature:
According to one embodiment of present invention, described throttling arrangement comprises: the first capillary; Second capillary; Three-way pipe, one end of described first capillary is connected with the second port with the first port of described three-way pipe respectively with one end of described second capillary; And transition conduit, the other end of described first capillary is all connected with one end of described transition conduit with the other end of described second capillary, to make described three-way pipe, described first capillary be connected with described transition conduit formation first refrigerant flow, described three-way pipe, described second capillary are connected with described transition conduit formation second refrigerant flow; Wherein, be provided with unloader between described first capillary and described three-way pipe, described unloader can open or close described first refrigerant flow according to self pressure size.
In above-described embodiment, the first capillary, as the restriction of the first refrigerant flow, realizes the throttling function of the first refrigerant flow; Second capillary, as the restriction of the second refrigerant flow, realizes the throttling function of the second refrigerant flow; Unloader, as the control valve of the first refrigerant flow, can open or close the first refrigerant flow according to self pressure; Second refrigerant flow does not arrange control valve, is in normal open state.Like this, second refrigerant flow of whole throttling arrangement is in normal open state, and the break-make of the first refrigerant flow is by the control of unloader, by controlling the break-make of the first refrigerant flow, the sectional dimension of the stream regulating refrigerant to pass through, thus pressure when running air-conditioning system in pipeline effectively regulates, and then ensure the high-temperature refrigeration effect of air-conditioning system.Detailed process is as follows: when system pressure is higher, unloader is opened by the driving of high pressure refrigerant, article two, and the refrigerant flow connect work simultaneously, to increase the cold medium flux of unit interval by throttling arrangement, thus reduce the pressure of system, and then improve the capacity of duplex cylinder compressor, break through the bottleneck of the capacity of duplex cylinder compressor, the object realizing highly effective refrigeration or heat; When system pressure is not high, unloader is then in closed condition, and the second refrigerant flow works independently, and can ensure the normal operation of air-conditioning system.Certainly, control valve also can be electrically-controlled valve, can realize the function controlling refrigerant flow break-make equally, not repeat them here, but all should in protection scope of the present invention.
According to one embodiment of present invention, described first capillary, be provided with check valve between described second capillary and described transition conduit, described check valve is one-way conduction on described first capillary, described second capillary to the direction of described transition conduit; Described first capillary, between described second capillary and described transition conduit, be provided with three capillary, the pipeline phase at described three capillary and described check valve place also connects, and can flow to described first capillary or described second capillary to make refrigerant by described transition conduit through described three capillary.According to one embodiment of present invention, 3rd port of described three-way pipe is connected with the Single port of described outdoor heat exchanger, the another port of described transition conduit is connected with the Single port of described indoor heat exchanger, when being in refrigeration mode to make described air-conditioning system refrigerant flow to described transition conduit by described three-way pipe, described air-conditioning system when being in heating mode refrigerant flow to described three-way pipe by described transition conduit.
In above-described embodiment, three-way pipe is connected with outdoor heat exchanger, transition conduit is connected with indoor heat exchanger, under making refrigeration mode, refrigerant flow to transition conduit by three-way pipe, namely the high pressure refrigerant flowed out by outdoor heat exchanger flows to the first capillary and the second capillary respectively through three-way pipe, what now unloader was subject to is high-pressure, and the break-make of the first refrigerant flow can be controlled according to the size of pressure, and the second refrigerant flow is in normal open state, thus the break-make of two refrigerant flows is utilized effectively to regulate pressure in air-conditioning system pipeline; And refrigerant flow to three-way pipe by transition conduit under heating mode, when now refrigerant flows to three-way pipe by transition conduit, first carry out effective step-down through three capillary and the second capillary, thus now unloader be subject to for low pressure, therefore unloader is in normally off, namely in heating operations, unloader does not play Flow-rate adjustment effect, but does not affect the normal heating operation of air-conditioning system.
According to one embodiment of present invention, the opening pressure of described unloader be greater than described air-conditioning system be in refrigeration mode and the single cylinder of described double-cylinder variable-capacity compressor is opened time the described unloader pressure that bears, and be less than described air-conditioning system be in refrigeration mode and the twin-tub of described double-cylinder variable-capacity compressor is opened time the described unloader pressure that bears.
In above-described embodiment, condition is opened by what arrange unloader, unloader (under normal refrigeration mode) when air-conditioning system is in refrigeration mode and single cylinder is opened is made to be in closed condition, the first refrigerant flow now in throttling arrangement is not communicated with, only the second refrigerant flow of throttling arrangement is communicated with, therefore to realize under normal refrigeration mode an only refrigerant flow to work independently, realize the normal refrigerating function of air-conditioning system; And make unloader (under powerful refrigeration mode) when air-conditioning system is in refrigeration mode and twin-tub is opened be in open mode, now two refrigerant flows of throttling arrangement work simultaneously, reach the object of the pressure regulated in air-conditioning system pipeline, thus the running status of throttling arrangement and the operational mode of air-conditioning system are matched, thus ensure that the Effec-tive Function of air-conditioning system.
According to one embodiment of present invention, described air-conditioning system also comprises: three-way magnetic valve, first port of described three-way magnetic valve is connected with the exhaust outlet of described double-cylinder variable-capacity compressor, second port of described three-way magnetic valve is connected with the gas returning port of described double-cylinder variable-capacity compressor, and the 3rd port of described three-way magnetic valve is connected with the little cylinder signal mouth of described double-cylinder variable-capacity compressor.
In above-described embodiment, air-conditioning system also comprises three-way magnetic valve, three ports of three-way magnetic valve are connected with little cylinder signal mouth with the exhaust outlet of double-cylinder variable-capacity compressor, gas returning port respectively, by control three-way magnetic valve three ports between connected relation, the pressure size at little cylinder signal mouth place can be controlled, and then controlling the start and stop of little cylinder, control procedure is simple, and pipeline cost is low.
According to one embodiment of present invention, described three-way magnetic valve is provided with solenoid, and during described solenoid energising, described first port of described three-way magnetic valve is connected with described 3rd port, is connected with described little cylinder signal mouth to make described exhaust outlet; During described solenoid power-off, described second port of described three-way magnetic valve is connected with described 3rd port, is connected with described little cylinder signal mouth to make described gas returning port.
In above-described embodiment, when the solenoid is activated, first port of three-way magnetic valve is communicated with the 3rd port, and because the exhaust outlet of double-cylinder variable-capacity compressor is connected with the first port, little cylinder signal mouth is communicated with the 3rd port, thus exhaust outlet is connected with little cylinder signal mouth, make the pressure of the pressure at little cylinder signal mouth place and exhaust ports suitable, because exhaust ports is high pressure refrigerant, thus little cylinder signal mouth place is also in high pressure conditions, now promote little cylinder to open, realize twin-tub and run; In like manner, when solenoid power-off, second port of three-way magnetic valve is communicated with the 3rd port, and because the gas returning port of double-cylinder variable-capacity compressor is communicated with the second port, little cylinder signal mouth is communicated with the 3rd port, thus gas returning port is connected with little cylinder signal mouth, make the pressure at the pressure at little cylinder signal mouth place and gas returning port place suitable, because gas returning port place is low pressure refrigerant, thus little cylinder signal mouth place is also in low-pressure state, now little cylinder is closed, and vat single cylinder runs.
According to one embodiment of present invention, described air-conditioning system also comprises: control device, described control device is electrically connected with described solenoid, described control device is used for the mode of operation according to described air-conditioning system, control the energising of described solenoid or power-off, the single cylinder controlling described double-cylinder variable-capacity compressor when being in common refrigeration and common heating mode to make described air-conditioning system is opened, and the twin-tub controlling described double-cylinder variable-capacity compressor when described air-conditioning system is in powerful refrigeration and powerful heating mode is opened.
In above-described embodiment, energising or the power-off of solenoid is controlled by control device, make little cylinder be in closed condition in the normal mode, and be in opening under powerful pattern, namely under powerful pattern, the twin-tub of compressor is opened simultaneously, to realize the object that fast-refrigerating heats, then vat isolated operation under general mode, to reduce system energy consumption, both improves Consumer's Experience like this, again save the energy, reduce the energy consumption of air-conditioning system.
According to one embodiment of present invention, described control device comprises: selecting arrangement, and described selecting arrangement can send selection signal; And controller, described controller is electrically connected with described selecting arrangement, described four-way change-over valve and described solenoid respectively, described controller can receive described selection signal, and controls the described four-way change-over valve switching refrigerant flow direction according to described selection signal, control the energising of described solenoid or power-off simultaneously.
In above-described embodiment, control device comprises selecting arrangement and controller, the mode of operation of the air-conditioning system needed for user selects by selecting arrangement, and this selection signal can be sent to controller by selecting arrangement, controller then controls the flow direction of refrigerant and the break-make of solenoid in four-way change-over valve according to this selection signal, thus under normal refrigeration mode, control solenoid and be in off-state, the little cylinder of double-cylinder variable-capacity compressor is not opened, realize the object that vat single cylinder runs, under powerful refrigeration mode, control solenoid and be in connected state, the little cylinder of double-cylinder variable-capacity compressor and vat are opened simultaneously, the object that twin-tub runs, and now unloader is in open mode, first refrigerant flow and second refrigerant flow of throttling arrangement are all in running order, pressure in the pipeline of effective reduction air-conditioning system, thus increase the capacity of double-cylinder variable-capacity compressor, break through the bottleneck of double-cylinder variable-capacity compressor capacity, effective raising high-temperature refrigeration effect, similarly, under common heating mode, control solenoid and be in off-state, the little cylinder of double-cylinder variable-capacity compressor is not opened, realize the object that vat single cylinder runs, under powerful heating mode, control solenoid and be in connected state, the little cylinder of double-cylinder variable-capacity compressor and vat are opened simultaneously, the object that twin-tub runs.
According to one embodiment of present invention, the pipeline being communicated with described three-way magnetic valve and described double-cylinder variable-capacity compressor is copper pipe or steel pipe, preferably, is copper pipe or the steel pipe of pipe with small pipe diameter.
Additional aspect of the present invention and advantage become obvious by description part below, or are recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the throttling arrangement described in one embodiment of the invention;
Fig. 2 is the structural representation of the air-conditioning system described in one embodiment of the invention;
Fig. 3 is the structural representation of the air-conditioning system described in another embodiment of the present invention.
Wherein, the corresponding relation in Fig. 1 to Fig. 3 between Reference numeral and component names is:
10 throttling arrangements, 11 first capillaries, 12 second capillaries, 13 three-way pipes, 14 transition conduit, 15 unloaders, 16 check valves, 17 three capillaries, 20 double-cylinder variable-capacity compressors, 21 exhaust outlets, 22 gas returning ports, 23 little cylinder signal mouths, 30 four-way change-over valves, 40 outdoor heat exchangers, 50 indoor heat exchangers, 60 three-way magnetic valves.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from mode described here to implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Air-conditioning system is according to some embodiments of the invention described with reference to the accompanying drawings.
As shown in Figure 1 to Figure 3, air-conditioning system provided by the invention, comprise: double-cylinder variable-capacity compressor 20, four-way change-over valve 30, outdoor heat exchanger 40, throttling arrangement 10 and indoor heat exchanger 50, double-cylinder variable-capacity compressor 20, four-way change-over valve 30, outdoor heat exchanger 40, throttling arrangement 10 are connected with indoor heat exchanger 50 and form refrigerant circulation stream; Wherein, throttling arrangement 10 comprises two and the refrigerant flow connect, each refrigerant flow is equipped with restriction, and at least one refrigerant flow is provided with the control valve that can open or close refrigerant flow, with be in refrigeration mode in air-conditioning system and the twin-tub of double-cylinder variable-capacity compressor 20 is opened time control two refrigerant flows and all open, control a refrigerant flow when air-conditioning system is in refrigeration mode and the single cylinder of double-cylinder variable-capacity compressor 20 is opened and open.
Air-conditioning system provided by the invention, its throttling arrangement 10 comprises two and the refrigerant flow connect, by controlling the quantity of the refrigerant flow opened in throttling arrangement 10, the sectional dimension of refrigerant by throttling arrangement 10 can be controlled, thus control the unit interval flow through the cold medium flux that throttling arrangement 10 carries out effective step-down, thus pressure when regulating air-conditioning system to run in pipeline, to ensure the high-temperature refrigeration effect of air-conditioning system.
In one embodiment of the invention, throttling arrangement 10 comprises: the first capillary 11; Second capillary 12; Three-way pipe 13, one end of the first capillary 11 is connected with the second port with the first port of three-way pipe 13 respectively with one end of the second capillary 12; With transition conduit 14, the other end of the first capillary 11 is all connected with one end of transition conduit 14 with the other end of the second capillary 12, to make three-way pipe 13, first capillary 11 be connected with transition conduit 14 formation first refrigerant flow, three-way pipe 13, second capillary 12 is connected with transition conduit 14 formation second refrigerant flow; Wherein, be provided with unloader 15 between the first capillary 11 and three-way pipe 13, unloader 15 can open or close the first refrigerant flow according to self pressure size.
Further, as shown in Figure 1, be provided with check valve 16 between the first capillary 11, second capillary 12 and transition conduit 14, check valve is one-way conduction on the first capillary, the second capillary to the direction of transition conduit; Three capillary 17 is provided with between first capillary 11, second capillary 12 and transition conduit 14, three capillary 17 is in parallel with the pipeline at check valve 16 place, can flow to the first capillary 11 or the second capillary 12 to make refrigerant by transition conduit 14 through three capillary 17.
In this embodiment, the first capillary 11, as the restriction of the first refrigerant flow, realizes the throttling function of the first refrigerant flow; Second capillary 12, as the restriction of the second refrigerant flow, realizes the throttling function of the second refrigerant flow; Unloader 15, as the control valve of the first refrigerant flow, can open or close the first refrigerant flow according to self pressure; Second refrigerant flow does not arrange control valve, is in normal open state.Like this, second refrigerant flow of whole throttling arrangement 10 is in normal open state, and the break-make of the first refrigerant flow is by the control of unloader 15, by controlling the break-make of the first refrigerant flow, the sectional dimension of the stream regulating refrigerant to pass through, thus pressure when running air-conditioning system in pipeline effectively regulates, and then ensure the high-temperature refrigeration effect of air-conditioning system.
Detailed process is as follows: when system pressure is higher, unloader 15 is opened by the driving of high pressure refrigerant, article two, and the refrigerant flow connect work simultaneously, to increase the cold medium flux of unit interval by throttling arrangement 10, thus reduce the pressure of system, and then improve the capacity of duplex cylinder compressor, break through the bottleneck of the capacity of duplex cylinder compressor, the object realizing highly effective refrigeration or heat; When system pressure is not high, unloader 15 is in closed condition, and the second refrigerant flow works independently, and can ensure the normal operation of air-conditioning system.
Certainly, control valve also can be electrically-controlled valve, can realize the function controlling refrigerant flow break-make equally, not repeat them here, but all should in protection scope of the present invention.
In some embodiments of the invention, as shown in Figures 2 and 3,3rd port of three-way pipe 13 is connected with the Single port of outdoor heat exchanger 40, the another port of transition conduit 14 is connected with the Single port of indoor heat exchanger 50, when being in refrigeration mode to make air-conditioning system refrigerant flow to transition conduit 14 by three-way pipe 13, air-conditioning system when being in heating mode refrigerant flow to three-way pipe 13 by transition conduit 14.
In this embodiment, three-way pipe 13 is connected with outdoor heat exchanger 40, transition conduit 14 is connected with indoor heat exchanger 50, under making refrigeration mode, refrigerant flow to transition conduit 14 by three-way pipe 13, namely the high pressure refrigerant flowed out by outdoor heat exchanger 40 flows to the first capillary 11 and the second capillary 12 respectively through three-way pipe 13, what now unloader 15 was subject to is high-pressure, and the break-make of the first refrigerant flow can be controlled according to the size of pressure, and the second refrigerant flow is in normal open state, thus utilize the break-make of two refrigerant flows effectively to regulate pressure in air-conditioning system pipeline, and refrigerant flow to three-way pipe 13 by transition conduit 14 under heating mode, when now refrigerant flows to three-way pipe 13 by transition conduit 14, first carry out effective step-down through three capillary 17 and the second capillary 12, thus now unloader 15 be subject to for low pressure, therefore unloader 15 is in normally off, namely in heating operations, unloader 15 does not play Flow-rate adjustment effect, but does not affect the normal heating operation of air-conditioning system.
In some embodiments of the invention, the opening pressure of unloader 16 be greater than air-conditioning system be in refrigeration mode and the single cylinder of double-cylinder variable-capacity compressor 20 is opened time unloader 16 pressure that bears, and be less than air-conditioning system be in refrigeration mode and the twin-tub of double-cylinder variable-capacity compressor 20 is opened time unloader 16 pressure that bears.
In above-described embodiment, condition is opened by what arrange unloader 15, unloader 15 is made to be in closed condition under normal refrigeration mode, the first refrigerant flow now in throttling arrangement 10 is not communicated with, only the second refrigerant flow of throttling arrangement 10 is communicated with, therefore to realize under normal refrigeration mode an only refrigerant flow to work independently, realize the normal refrigerating function of air-conditioning system; And make unloader 15 be in open mode under powerful refrigeration mode, now two refrigerant flows of throttling arrangement 10 work simultaneously, reach the object of the pressure regulated in air-conditioning system pipeline, thus the running status of throttling arrangement 10 and the operational mode of air-conditioning system are matched, thus ensure that the Effec-tive Function of air-conditioning system.
In some embodiments of the invention, as shown in Figures 2 and 3, air-conditioning system also comprises: three-way magnetic valve 60, first port of three-way magnetic valve 60 is connected with the exhaust outlet 21 of double-cylinder variable-capacity compressor 20, second port of three-way magnetic valve 60 is connected with the gas returning port 22 of double-cylinder variable-capacity compressor 20, and the 3rd port of three-way magnetic valve 60 is connected with the little cylinder signal mouth 23 of double-cylinder variable-capacity compressor 20.
In this embodiment, air-conditioning system also comprises three-way magnetic valve 60, three ports of three-way magnetic valve 60 are connected with little cylinder signal mouth 23 with the exhaust outlet 21 of double-cylinder variable-capacity compressor 20, gas returning port 22 respectively, by control three-way magnetic valve 60 three ports between connected relation, the pressure size at little cylinder signal mouth 23 place can be controlled, and then controlling the start and stop of little cylinder, control procedure is simple, and pipeline cost is low.
In some embodiments of the invention, three-way magnetic valve 60 is provided with solenoid, and during solenoid energising, the first port of three-way magnetic valve 60 is connected with the 3rd port, is connected with little cylinder signal mouth 23 to make exhaust outlet 21; During solenoid power-off, the second port of three-way magnetic valve 60 is connected with the 3rd port, is connected with little cylinder signal mouth 23 to make gas returning port 22.
In this embodiment, when the solenoid is activated, first port of three-way magnetic valve 60 is communicated with the 3rd port, because the exhaust outlet 21 of double-cylinder variable-capacity compressor 20 is connected with the first port, little cylinder signal mouth 23 is communicated with the 3rd port, thus exhaust outlet 21 is connected with little cylinder signal mouth 23, make the pressure at the pressure at little cylinder signal mouth 23 place and exhaust outlet 21 place suitable, because exhaust outlet 21 place is high pressure refrigerant, thus little cylinder signal mouth 23 place is also in high pressure conditions, now promote little cylinder to open, realize twin-tub and run; In like manner, when solenoid power-off, second port of three-way magnetic valve 60 is communicated with the 3rd port, and because the gas returning port 22 of double-cylinder variable-capacity compressor 20 is communicated with the second port, little cylinder signal mouth 23 is communicated with the 3rd port, thus gas returning port 22 is connected with little cylinder signal mouth 23, make the pressure at the pressure at little cylinder signal mouth 23 place and gas returning port 22 place suitable, because gas returning port 22 place is low pressure refrigerant, thus little cylinder signal mouth 23 place is also in low-pressure state, now little cylinder is closed, and vat single cylinder runs.
In some embodiments of the invention, air-conditioning system also comprises: control device (not shown), control device is electrically connected with solenoid, control device is used for the mode of operation according to air-conditioning system, control solenoid energising or power-off, the single cylinder controlling double-cylinder variable-capacity compressor 20 when being in common refrigeration and common heating mode to make air-conditioning system is opened, and the twin-tub controlling double-cylinder variable-capacity compressor 20 when air-conditioning system is in powerful refrigeration and powerful heating mode is opened.
In this embodiment, energising or the power-off of solenoid is controlled by control device, make little cylinder be in closed condition in the normal mode, and be in opening under powerful pattern, namely under powerful pattern, the twin-tub of compressor is opened simultaneously, to realize the object that fast-refrigerating heats, then vat isolated operation under general mode, to reduce system energy consumption, both improves Consumer's Experience like this, again save the energy, reduce the energy consumption of air-conditioning system.
In some embodiments of the invention, when the unloader 15 of throttling arrangement 10 is opened, pressure is greater than the pressure at unloader 15 position place when air-conditioning system is in normal refrigeration mode, and be less than the pressure at unloader 15 position place when air-conditioning system is in powerful refrigeration mode, when being in normal refrigeration mode to make air-conditioning system unloader 15 be in closed condition, air-conditioning system when being in powerful refrigeration mode unloader 15 be in open mode.
In above-described embodiment, condition is opened by what arrange unloader 15, unloader 15 is made to be in closed condition under normal refrigeration mode, the first refrigerant flow now in throttling arrangement 10 is not communicated with, only the second refrigerant flow of throttling arrangement 10 is communicated with, therefore to realize under normal refrigeration mode an only refrigerant flow to work independently, realize the normal refrigerating function of air-conditioning system; And make unloader 15 be in open mode under powerful refrigeration mode, now two refrigerant flows of throttling arrangement 10 work simultaneously, reach the object of the pressure regulated in air-conditioning system pipeline, thus the running status of throttling arrangement 10 and the operational mode of air-conditioning system are matched, thus ensure that the Effec-tive Function of air-conditioning system.
In some embodiments of the invention, control device comprises: selecting arrangement and controller, and selecting arrangement can send selection signal; Controller is electrically connected with selecting arrangement, four-way change-over valve 30 and solenoid respectively, and controller can receive selection signal, and switches the refrigerant flow direction according to selection signal control four-way change-over valve 30, control solenoid energising or power-off simultaneously.
In this embodiment, control device comprises selecting arrangement and controller, the mode of operation of the air-conditioning system needed for user selects by selecting arrangement, and this selection signal can be sent to controller by selecting arrangement, controller then controls the flow direction of refrigerant and the break-make of solenoid in four-way change-over valve 30 according to this selection signal, thus under normal refrigeration mode, control solenoid and be in off-state, the little cylinder of double-cylinder variable-capacity compressor 20 is not opened, realize the object that vat single cylinder runs, under powerful refrigeration mode, control solenoid and be in connected state, the little cylinder of double-cylinder variable-capacity compressor 20 and vat are opened simultaneously, the object that twin-tub runs, and now unloader 15 is in open mode, first refrigerant flow and second refrigerant flow of throttling arrangement 10 are all in running order, pressure in the pipeline of effective reduction air-conditioning system, thus increase the capacity of double-cylinder variable-capacity compressor 20, break through the bottleneck of double-cylinder variable-capacity compressor 20 capacity, effective raising high-temperature refrigeration effect, similarly, under common heating mode, control solenoid and be in off-state, the little cylinder of double-cylinder variable-capacity compressor 20 is not opened, realize the object that vat single cylinder runs, under powerful heating mode, control solenoid and be in connected state, the little cylinder of double-cylinder variable-capacity compressor 20 and vat are opened simultaneously, the object that twin-tub runs.
In some embodiments of the invention, the pipeline being communicated with three-way magnetic valve 60 and double-cylinder variable-capacity compressor 20 is copper pipe or steel pipe, is preferably copper pipe or the steel pipe of pipe with small pipe diameter.
In sum, the invention provides a kind of air-conditioning system, air-conditioning system provided by the invention, by utilize in throttling arrangement two and the refrigerant flow connect control air-conditioning system run time pipeline in pressure, thus system pressure when twin-tub runs under reducing refrigeration mode, and then ensure that the high-temperature refrigeration effect of air-conditioning.Particularly, when air-conditioning system is in refrigeration mode and twin-tub is opened simultaneously, system pressure is higher, two refrigerant flows opened by throttling arrangement, and the refrigerant flow connect effectively increases refrigerant by sectional dimension during throttling arrangement article two, thus improve the unit interval and flow through the cold medium flux that throttling arrangement carries out effective step-down, thus the pressure reduced in pipeline, improve capacity when double-cylinder variable-capacity compressor twin-tub is opened simultaneously, thus ensure that the high-temperature refrigeration effect of air-conditioning, breach the bottleneck of traditional double-cylinder variable-capacity compressor capacity; When air-conditioning system is in refrigeration mode and single cylinder is opened, system pressure is in the scope of design permission, now a refrigerant flow only opened by throttling arrangement, the normal operation of air-conditioning system can be ensured, and one of throttling arrangement refrigerant flow is opened, energy consumption during air-conditioning system work effectively can be reduced.Like this, to utilize in throttling arrangement two and the opening and close the pressure effectively regulating air-conditioning system of the refrigerant flow connect, to ensure the Effec-tive Function of air-conditioning system, and have structure simple, with low cost, be applicable to the industrial advantage of mass.
In describing the invention, unless otherwise prescribed or illustrate, term " connections ", " being connected " etc. all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly, or be electrically connected; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this description, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
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 amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an air-conditioning system, is characterized in that, comprising:
Double-cylinder variable-capacity compressor, four-way change-over valve, outdoor heat exchanger, indoor heat exchanger and throttling arrangement, described double-cylinder variable-capacity compressor, described four-way change-over valve, described outdoor heat exchanger, described throttling arrangement are connected with described indoor heat exchanger and form refrigerant circulation stream;
Wherein, described throttling arrangement comprises two and the refrigerant flow connect, refrigerant flow described in each is equipped with restriction, and at least one described refrigerant flow is provided with the control valve that can open or close described refrigerant flow, with be in refrigeration mode in described air-conditioning system and the twin-tub of described double-cylinder variable-capacity compressor is opened time control two described refrigerant flows and all open, control a described refrigerant flow when described air-conditioning system is in refrigeration mode and the single cylinder of described double-cylinder variable-capacity compressor is opened and open.
2. air-conditioning system according to claim 1, is characterized in that, described throttling arrangement comprises:
First capillary;
Second capillary;
Three-way pipe, one end of described first capillary is connected with the second port with the first port of described three-way pipe respectively with one end of described second capillary; With
Transition conduit, the other end of described first capillary is all connected with one end of described transition conduit with the other end of described second capillary, to make described three-way pipe, described first capillary be connected with described transition conduit formation first refrigerant flow, described three-way pipe, described second capillary are connected with described transition conduit formation second refrigerant flow;
Wherein, be provided with unloader between described first capillary and described three-way pipe, described unloader can open or close described first refrigerant flow according to self pressure size.
3. air-conditioning system according to claim 2, is characterized in that,
Described first capillary, be provided with check valve between described second capillary and described transition conduit, described check valve is one-way conduction on described first capillary, described second capillary to the direction of described transition conduit;
Described first capillary, between described second capillary and described transition conduit, be provided with three capillary, the pipeline phase at described three capillary and described check valve place also connects, and can flow to described first capillary or described second capillary to make refrigerant by described transition conduit through described three capillary.
4. air-conditioning system according to claim 3, is characterized in that,
3rd port of described three-way pipe is connected with the Single port of described outdoor heat exchanger, the another port of described transition conduit is connected with the Single port of described indoor heat exchanger, when being in refrigeration mode to make described air-conditioning system refrigerant flow to described transition conduit by described three-way pipe, described air-conditioning system when being in heating mode refrigerant flow to described three-way pipe by described transition conduit.
5. air-conditioning system according to claim 4, is characterized in that,
The opening pressure of described unloader be greater than described air-conditioning system be in refrigeration mode and the single cylinder of described double-cylinder variable-capacity compressor is opened time the described unloader pressure that bears, and be less than described air-conditioning system be in refrigeration mode and the twin-tub of described double-cylinder variable-capacity compressor is opened time the described unloader pressure that bears.
6. air-conditioning system according to any one of claim 1 to 5, is characterized in that, also comprises:
Three-way magnetic valve, first port of described three-way magnetic valve is connected with the exhaust outlet of described double-cylinder variable-capacity compressor, second port of described three-way magnetic valve is connected with the gas returning port of described double-cylinder variable-capacity compressor, and the 3rd port of described three-way magnetic valve is connected with the little cylinder signal mouth of described double-cylinder variable-capacity compressor.
7. air-conditioning system according to claim 6, is characterized in that,
Described three-way magnetic valve is provided with solenoid, and during described solenoid energising, described first port of described three-way magnetic valve is connected with described 3rd port, is connected with described little cylinder signal mouth to make described exhaust outlet; During described solenoid power-off, described second port of described three-way magnetic valve is connected with described 3rd port, is connected with described little cylinder signal mouth to make described gas returning port.
8. air-conditioning system according to claim 7, is characterized in that, also comprises:
Control device, described control device is electrically connected with described solenoid, described control device is used for the mode of operation according to described air-conditioning system, control the energising of described solenoid or power-off, the single cylinder controlling described double-cylinder variable-capacity compressor when being in common refrigeration and common heating mode to make described air-conditioning system is opened, and the twin-tub controlling described double-cylinder variable-capacity compressor when described air-conditioning system is in powerful refrigeration and powerful heating mode is opened.
9. air-conditioning system according to claim 8, is characterized in that, described control device comprises:
Selecting arrangement, described selecting arrangement can send selection signal; With
Controller, described controller is electrically connected with described selecting arrangement, described four-way change-over valve and described solenoid respectively, described controller can receive described selection signal, and controls the described four-way change-over valve switching refrigerant flow direction according to described selection signal, control the energising of described solenoid or power-off simultaneously.
10. air-conditioning system according to claim 6, is characterized in that,
The pipeline being communicated with described three-way magnetic valve and described double-cylinder variable-capacity compressor is copper pipe or steel pipe.
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| CN106440443A (en) * | 2016-11-25 | 2017-02-22 | 广州华凌制冷设备有限公司 | Air conditioner system suitable for high-temperature refrigerating and control method |
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