CN104089427A - Air conditioner system and control method thereof - Google Patents
Air conditioner system and control method thereof Download PDFInfo
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- CN104089427A CN104089427A CN201410287199.0A CN201410287199A CN104089427A CN 104089427 A CN104089427 A CN 104089427A CN 201410287199 A CN201410287199 A CN 201410287199A CN 104089427 A CN104089427 A CN 104089427A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000003507 refrigerant Substances 0.000 claims description 91
- 238000004378 air conditioning Methods 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 25
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 239000002826 coolant Substances 0.000 abstract description 3
- 238000010257 thawing Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention provides an air conditioner system. The air conditioner system comprises a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger; the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected to form into a circulating loop; the outdoor heat exchanger comprises a first flow route and a second flow route; the first flow route and the second flow route which are in tandem connection with the throttling device are connected to the indoor heat exchanger; a first electronic valve is in tandem connection between the first flow route and the second flow route; the first flow route and the second flow route which are in tandem connection with a valve device are connected to a first four-way valve to enable a first valve port of the first four-way valve to be communicated with the first flow route or the second flow route; coolants enter the first flow route and enter the second flow route after being throttled through the throttling device; or the coolants enter the second flow route and enter the first flow route after being throttled through the throttling device. The invention also relates to an air conditioner system control method. The air conditioner system and control method thereof improve the defrosting speed and effect of the outdoor heat exchanger and guarantee the air conditioner heating effect.
Description
Technical field
The present invention relates to air-conditioner technical field, particularly relate to a kind of air-conditioning system and control method thereof.
Background technology
When pump type heat unit carries out heating operation in the winter time, the frosting gradually of the surface of outdoor heat exchanger, along with the thickening of frost layer, the exchange capability of heat of heat exchanger constantly declines, and heating effect reduces gradually, now should carry out defrost.
General defrosting method comprises translative mode defrost and the two kinds of methods of hot-gas bypass defrost of shutting down.And general hot-gas bypass defrosting method, the refrigerant of HTHP first enters outdoor heat exchanger through hot-gas bypass branch road again and carries out heat exchange defrost after refrigerant in indoor heat exchanger mixes, make like this speed of defrost slower, the effect of defrost is poor, affects the heating effect of indoor heat exchanger.
Summary of the invention
In view of the present situation of prior art, the object of the present invention is to provide a kind of air-conditioning system and control method thereof, in the situation that air-conditioning system continues to heat, improved the defrost speed of outdoor heat exchanger, strengthened the defrost effect of outdoor heat exchanger.
For achieving the above object, the present invention adopts following technical scheme:
An air-conditioning system, comprises compressor, outdoor heat exchanger, throttling arrangement and indoor heat exchanger, and described compressor, described indoor heat exchanger, described throttling arrangement and described outdoor heat exchanger are in turn connected to form closed circuit,
Also comprise the first cross valve, described the first cross valve is serially connected between described outdoor heat exchanger and described compressor, the exhaust outlet of described compressor connects the first valve port of described the first cross valve, the second valve port of described the first cross valve is communicated with described indoor heat exchanger, the air entry that is communicated with described compressor after the 3rd valve port serial connection gas-liquid separator of described the first cross valve, the 4th valve port of described the first cross valve is communicated with described outdoor heat exchanger
Described outdoor heat exchanger is divided into the first stream and the second stream, described the first stream and described the second stream are all connected in series described throttling arrangement and are connected to described indoor heat exchanger, between described the first stream and described the second stream, be also serially connected with the first electronic valve, described the first stream and described the second stream are connected in series respectively valving and are connected to described the first cross valve, make the first valve port of described the first cross valve be communicated with described the first stream or described the second stream, high temperature refrigerant enters described the first stream, after described throttling arrangement throttling, enter described the second stream, or high temperature refrigerant enters described the second stream, after described throttling arrangement throttling, enter described the first stream.
In an embodiment, described valving comprises the second electronic valve, the 3rd electronic valve and quadrielectron valve therein;
Described outdoor heat exchanger comprises four ports, be respectively the first port, the second port, the 3rd port and the 4th port, described the first port and described the second port are connected and form described the first stream, and described the 3rd port and described the 4th port are connected and form described the second stream; Described the first electronic valve is serially connected between the 4th valve port of described the first port and described the first cross valve;
Described the second electronic valve is serially connected between described the first port and the first valve port of described the first cross valve, described the 3rd electronic valve is serially connected between described the 3rd port and the first valve port of described the first cross valve, and described quadrielectron valve is serially connected between the 4th valve port of the 3rd port and described the first cross valve.
In an embodiment, described valving comprises the second cross valve and the 5th electronic valve therein;
Described outdoor heat exchanger comprises four ports, be respectively the first port, the second port, the 3rd port and the 4th port, described the first port and described the second port are connected and form described the first stream, and described the 3rd port and described the 4th port are connected and form described the second stream; Described the first electronic valve is serially connected between described the first port and described the 3rd port;
The first valve port of described the second cross valve is connected in series the first valve port that described the 5th electronic valve is connected to described the first cross valve, and the second valve port of described the second cross valve is connected to described the 3rd port; The 3rd valve port of described the second cross valve connects the 4th valve port of described the first cross valve, and the 4th valve port of described the second cross valve is connected to described the first port.
In an embodiment, described throttling arrangement comprises first throttle device and the second throttling arrangement therein;
Described the first stream is connected in series described first throttle device and is connected to described indoor heat exchanger, and described second is connected in series described the second throttling arrangement and is connected to described indoor heat exchanger.
In an embodiment, described outdoor heat exchanger comprises current divider and discharge therein;
The quantity of described current divider is two, is respectively the first current divider and the second current divider, and the quantity of described discharge is two, is respectively the first discharge and the second discharge;
The first current divider described in described first throttle device serial connection, corresponding connection of described the first discharge and described the first current divider forms the first stream, the second current divider described in described the second throttling device serial connection, described the second discharge forms the second stream with the corresponding connection of described the second current divider.
Therein in an embodiment, a plurality of isocons of described the first current divider and a plurality of isocons of described the second current divider are set in parallel in the main body of described outdoor heat exchanger, the arrangement mode of a plurality of isocons of described the first current divider and a plurality of isocons of described the second current divider is an isocon of described the first current divider and an isocon alternative arrangement of described the second current divider, and cycle arrangement is in the main body of described outdoor heat exchanger.
Therein in an embodiment, a plurality of isocons of described the first current divider and a plurality of isocons of described the second current divider are set in parallel in the main body of described outdoor heat exchanger, a plurality of isocons of described the first current divider are arranged on the top of the main body of described outdoor heat exchanger, and a plurality of isocons of described the second current divider are arranged on the bottom of the main body of described outdoor heat exchanger.
The invention still further relates to a kind of control method of air-conditioning system, the air-conditioning system for above-mentioned, comprises the steps:
When outdoor heat exchanger enters defrost pattern, the second electronic valve and the quadrielectron valve open of controller by-pass valve control device, the 3rd electronic valve of the first electronic valve and described valving is closed, and makes the first valve port of the first cross valve be communicated with the first stream;
Or the second electronic valve and the quadrielectron valve closing of controller by-pass valve control device, the 3rd electronic valve of the first electronic valve and described valving is opened, and makes the first valve port of the first cross valve be communicated with the second stream.
In an embodiment, also comprise the steps: therein
When outdoor heat exchanger defrost finishes, controller is controlled the quadrielectron valve open of the first electronic valve and described valving, the second electronic valve of described valving and the 3rd electronic valve are closed, and make the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.
The present invention also provides a kind of control method of air-conditioning system, and the air-conditioning system for above-mentioned, comprises the steps:
When outdoor heat exchanger enters defrost pattern, controller controls the first electronic valve and cuts out, the 5th electronic valve of valving is opened, the first valve port of the second cross valve of described valving is communicated with the second valve port of described the second cross valve or the 4th valve port of described the second cross valve, makes the first valve port of the first cross valve be communicated with the second stream or the first stream.
In an embodiment, also comprise the steps: therein
When outdoor heat exchanger defrost finishes, controller is controlled the first electronic valve and is opened, the 5th electronic valve of described valving is closed, the first valve port of the second cross valve of described valving is communicated with the second valve port of described the second cross valve or the 4th valve port of described the second cross valve, makes the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.
The invention has the beneficial effects as follows:
Air-conditioning system of the present invention and control method thereof, when outdoor heat exchanger need to carry out defrost, the first valve port that valving is controlled the first cross valve is the first stream or second stream of communication chamber external heat exchanger selectively, from the refrigerant of the HTHP of the discharge of compressor, by the first cross valve, be divided into two-way, one road refrigerant enters indoor heat exchanger and heats, and makes to still have hot blast to blow out in the process of air-conditioning defrost; Another road refrigerant directly enters outdoor heat exchanger by the first stream or the second stream and carries out defrost, has improved defrost speed, has strengthened defrost effect; Then after the mixing of two-way refrigerant, enter again outdoor heat exchanger evaporation and heat, guaranteed the heating effect of air-conditioning system; Finally, refrigerant is got back to the air entry of compressor, completes and once heats circulation.
Accompanying drawing explanation
Fig. 1 is the refrigerant circulation schematic diagram of the option A of air-conditioning system one embodiment of the present invention;
Fig. 2 is the refrigerant circulation schematic diagram of the option b of air-conditioning system one embodiment of the present invention;
The process that the heats refrigerant circulation schematic diagram of Fig. 3 air-conditioning system one embodiment of the present invention;
Fig. 4 is the position relationship schematic diagram of current divider and discharge one embodiment;
Fig. 5 is the position relationship schematic diagram of current divider and another embodiment of discharge;
Fig. 6 is the schematic diagram of another embodiment of air-conditioning system of the present invention;
Fig. 7 is the flow chart of control method one embodiment of the air-conditioning system of Fig. 1;
Fig. 8 is the flow chart of another embodiment of control method of the air-conditioning system of Fig. 6.
The specific embodiment
In order to make technical scheme of the present invention clearer, below in conjunction with accompanying drawing, air-conditioning system of the present invention and control method thereof are described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain that the present invention is not intended to limit the present invention.
Referring to Fig. 1 to Fig. 8, as shown in Figure 1, air-conditioning system of the present invention comprises compressor 1, indoor heat exchanger 12, outdoor heat exchanger 7, the first cross valve 2, throttling arrangement and valving.Wherein, compressor 1, indoor heat exchanger 12, throttling arrangement and outdoor heat exchanger 7 are in turn connected to form closed circuit, and refrigerant is circulating in this closed circuit, realizes the function that air-conditioning system continues to heat.
Wherein, the first cross valve 2 is serially connected between outdoor heat exchanger 7 and compressor 1.The first cross valve 2 comprises four valve ports, and in order to express easily, four valve ports of the first cross valve 2 are labeled as respectively the first valve port a, the second valve port b, the 3rd valve port c and the 4th valve port d.The exhaust outlet of compressor 1 is connected to the first valve port a of the first cross valve, makes like this refrigerant of the HTHP of discharging from compressor enter the first cross valve 2.The second valve port b of the first cross valve is communicated with the first valve port a, the second valve port b is communicated with indoor heat exchanger 12, like this, the refrigerant of the HTHP of discharging from compressor enters indoor heat exchanger 12 by the first cross valve 2, now indoor heat exchanger 12 is as condenser, refrigerant is condensation liquefaction heat release in indoor heat exchanger 12, by indoor air heat, realizes heating of air-conditioning system.
The air entry of the rear connection compressor 1 of the 3rd valve port c serial connection gas-liquid separator 13 of the first cross valve 2, the 4th valve port d of the 4th valve port communication chamber external heat exchanger 7, the first cross valves 2 of the first cross valve 2 is connected with the 3rd valve port c.Like this, refrigerant after evaporation endothermic, is got back to the air entry of compressor in outdoor heat exchanger by the first cross valve.Gas-liquid separator is for separating liquid refrigerants and gaseous coolant, makes liquid refrigerants can not enter the air entry of compressor, the reliability of assurance compressor operating.
Outdoor heat exchanger 7 is divided into the first stream and the second stream, the first stream and the second stream are all connected in series throttling arrangement and are connected to indoor heat exchanger 12, between the first stream and the second stream, be also serially connected with the first electronic valve 5, the first stream and the second stream are connected in series respectively valving and are connected to the first cross valve 2, make the first valve port a of the first cross valve 2 be communicated with the first stream or the second stream, high temperature refrigerant enters the first stream, after throttling arrangement throttling, enter second road, or high temperature refrigerant enters the second stream, after throttling arrangement throttling, enter first-class road.
When the first stream is communicated with the first valve port a of the first cross valve 2, the high temperature refrigerant that compressor is discharged is divided into two-way by the first cross valve, and first via high temperature refrigerant enters in indoor heat exchanger 12 and heats, and guarantees to still have hot blast to blow out in defrost process.The second road high temperature refrigerant directly enters outdoor heat exchanger by the first stream and carries out defrost, has improved the defrost speed of outdoor heat exchanger, has strengthened the defrost effect of outdoor heat exchanger.Then, the second road refrigerant mixes with first via refrigerant after throttling arrangement throttling, and the second stream that mixed refrigerant enters outdoor heat exchanger again by throttling arrangement heats, and finally gets back to the air entry of compressor, has guaranteed the heating effect of air-conditioning system.
When the second stream is communicated with the first valve port a of the first cross valve 2, the high temperature refrigerant that compressor is discharged is divided into two-way by the first cross valve, and first via high temperature refrigerant enters in indoor heat exchanger 12 and heats, and guarantees to still have hot blast to blow out in defrost process.The second road high temperature refrigerant directly enters outdoor heat exchanger by the second stream and carries out defrost, has improved the defrost speed of outdoor heat exchanger, has strengthened the defrost effect of outdoor heat exchanger.Then, the second road refrigerant mixes with first via refrigerant after throttling arrangement throttling, and the first stream that mixed refrigerant enters outdoor heat exchanger again by throttling arrangement heats, and finally gets back to the air entry of compressor, has guaranteed the heating effect of air-conditioning system.
When the first stream and the second stream are communicated with the 4th valve port d of the first cross valve 2, high temperature refrigerant enters in described indoor heat exchanger and heats.The high temperature refrigerant that compressor is discharged directly enters in indoor heat exchanger and heats, and then by throttling arrangement, outdoor heat exchanger, gets back to successively the air entry of compressor, completes and once heats circulation.
When outdoor heat exchanger need to carry out defrost, valving is controlled the first stream or second stream of the selectable communication chamber external heat exchanger of the first valve port of the first cross valve, from the refrigerant of the HTHP of the discharge of compressor, by the first cross valve, be divided into two-way, first via high temperature refrigerant enters indoor heat exchanger and heats, and makes to still have hot blast to blow out in the process of air-conditioning defrost; The second road high temperature refrigerant directly enters outdoor heat exchanger by the first stream or the second stream and carries out defrost, has improved defrost speed, has strengthened defrost effect; Then after the mixing of two-way refrigerant, enter again outdoor heat exchanger evaporation and heat, guaranteed the heating effect of air-conditioning system; Finally, refrigerant is got back to the air entry of compressor, completes and once heats circulation.
More preferably, outdoor heat exchanger 7 comprises four ports, be respectively the first port A, the second port B, the 3rd port C and the 4th port D, and the first port A and the second port B be connected and form the first stream, the 3rd port C and the 4th port D are connected and form the second stream.
Embodiment mono-
As shown in Figure 1, valving comprises the second electronic valve 3, the 3rd electronic valve 4 and quadrielectron valve 6.Preferably, the first electronic valve 5, the second electronic valve 3, the 3rd electronic valve 4 and quadrielectron valve 6 are magnetic valve or motor-driven valve.
The second electronic valve 3 is serially connected between the first port A and the first valve port a of the first cross valve 2, the 3rd electronic valve 4 is serially connected between the 3rd port C and the first valve port a of the first cross valve 2, the first electronic valve 5 is serially connected between the first port A and the 4th valve port d of the first cross valve 2, and quadrielectron valve 6 is serially connected between the 3rd port C and the 4th valve port d of the first cross valve 2.
When outdoor heat exchanger need to carry out defrost, the second electronic valve 3 or the 3rd electronic valve 4 of controller by-pass valve control device are opened, make the first stream or second stream of the first valve port a communication chamber external heat exchanger of the first cross valve 2, a refrigerant part for the HTHP that compressor is discharged directly enters in outdoor heat exchanger, outdoor heat exchanger is carried out to defrost, improved speed and the effect of defrost.Meanwhile, another part refrigerant is entered in indoor heat exchanger and is heated by the first cross valve, has guaranteed the heating effect of indoor heat exchanger.
Embodiment bis-
As shown in Figure 6, valving comprises the second cross valve 14 and the 5th electronic valve 17; The first electronic valve 5 is serially connected between the first port A and the 3rd port C;
The second cross valve 14 comprises four valve ports, and in order to express easily, four valve ports of the second cross valve 14 are labeled as respectively the first valve port a1, the second valve port b1, the 3rd valve port c1 and the 4th valve port d1.After the first valve port a1 serial connection the 5th electronic valve 17 of the second cross valve 14, be connected to the first valve port a of the first cross valve 2, the second valve port b1 of the second cross valve 14 is connected to the 3rd port C, the 3rd valve port c1 of the second cross valve 14 connects the 4th valve port d of the first cross valve 2, and the 4th valve port d of the second cross valve 14 is connected to the first port A.
When outdoor heat exchanger need to carry out defrost, the Rule of judgment of defrost can be the temperature of discharge of outdoor heat exchanger or temperature of outdoor environment etc.Controller controls the first electronic valve 5 and cuts out, the 5th electronic valve 17 of valving is opened, the first valve port a1 of the second cross valve 14 of valving is communicated with the second valve port b1 of the second cross valve 14 or the 4th valve port d1 of the second cross valve 14, the first valve port a of the first cross valve 2 and the second stream or first stream of outdoor heat exchanger 7 are communicated with, the high temperature refrigerant part that compressor is discharged directly enters in outdoor heat exchanger, outdoor heat exchanger is carried out to defrost, improved speed and the effect of defrost.Meanwhile, another part refrigerant is entered in indoor heat exchanger and is heated by the first cross valve, makes to still have hot blast to blow out in the process of air-conditioning defrost, has guaranteed the heating effect of indoor heat exchanger.
As a kind of embodiment, throttling arrangement comprises first throttle device 10 and the second throttling arrangement 11, and the first stream serial connection first throttle device 10 is connected to indoor heat exchanger 12, the second streams and is connected in series the second throttling arrangement 11 and is connected to indoor heat exchanger 12.Preferably, throttling arrangement is electric expansion valve or capillary.Throttling arrangement, for the cooling decompression of refrigerant, regulates the flow of refrigerant.
More preferably, outdoor heat exchanger 7 comprises current divider and discharge.The quantity of current divider is two, is respectively the first current divider 8 and the second current divider 9, and the quantity of discharge is two, is respectively the first discharge 15 and the second discharge 16.First throttle device 10 serial connection the first current divider 8, the first discharges 15 and the first current divider 8 are communicated with formation the first stream.Second throttling arrangement 11 serial connection the second current divider 9, the second discharges 16 are communicated with formation the second stream with the second current divider 9.
As a kind of embodiment, as shown in Figure 4, a plurality of isocons of a plurality of isocons of the first current divider 8 and the second current divider 9 are set in parallel in the main body of outdoor heat exchanger, the arrangement mode of a plurality of isocons of the first current divider 8 and a plurality of isocons of the second current divider 9 is isocon of the first current divider 8 and an isocon alternative arrangement of the second current divider 9, and cycle arrangement is in the main body of outdoor heat exchanger 7.Now, in the defrost process of outdoor heat exchanger the flow direction of refrigerant there are two kinds can embodiment.
Option A:
Controller detects in real time and judges whether outdoor heat exchanger needs to carry out defrost, and the Rule of judgment of defrost can be the temperature of discharge of outdoor heat exchanger or temperature of outdoor environment etc.When outdoor heat exchanger needs defrost, as shown in Figure 1, controller is controlled the second electronic valve 3 and quadrielectron valve 6 is opened, and the 3rd electronic valve 4 and the first electronic valve 5 are closed, and now, the first valve port a of the first cross valve 2 is communicated with the first stream.The refrigerant of the HTHP of discharging from compressor is divided into two-way by the first cross valve 2, and first via refrigerant directly enters indoor heat exchanger 12 and heats, guarantee air-conditioning in defrost process continue heat.The second road refrigerant directly enters in outdoor heat exchanger 7 by the second electronic valve 3, and outdoor heat exchanger 7 is carried out to defrost, has improved like this defrost speed and effect.Like this, in the process of defrost, do not need to switch the operational mode of air-conditioning system, can keep the hot blast that blows out that indoor heat exchanger continues, continue the pattern heating.
Then the second road refrigerant mixes with first via refrigerant after by the first current divider 8 and first throttle device 10 cooling decompressions, and mixed refrigerant enters in outdoor heat exchanger 7 again by the second throttling arrangement 11 and the second current divider 9.Now, outdoor heat exchanger 7 is as evaporimeter, and the suction end of compressor 1 is got back in the refrigerant heat absorption of gasifying in outdoor heat exchanger 7 by quadrielectron valve 6 and the first cross valve 2.
As shown in Figure 3, after defrost finishes, Air-condition system control the second electronic valve 3 and the 3rd electronic valve 4 are closed, the first electronic valve 5 and quadrielectron valve 6 are opened, outdoor heat exchanger 7 is completely as evaporimeter, the refrigerant of discharging from compressor all enters indoor heat exchanger and heats, and makes indoor heat exchanger in efficiently, heat state.
Option b:
Controller detects in real time and judges whether outdoor heat exchanger needs to carry out defrost, and the Rule of judgment of defrost can be the temperature of discharge of outdoor heat exchanger or temperature of outdoor environment etc.When outdoor heat exchanger needs defrost, as shown in Figure 2, controller is controlled the 3rd electronic valve 4 and the first electronic valve 5 is opened, and the second electronic valve 3 and quadrielectron valve 6 are closed, and now, the first valve port a of the first cross valve 2 is communicated with the second stream.The refrigerant of the HTHP of discharging from compressor is divided into two-way by the first cross valve 2, and first via refrigerant directly enters indoor heat exchanger 12 and heats, guarantee air-conditioning in defrost process continue heat.The second road refrigerant directly enters in outdoor heat exchanger 7 by the 3rd electronic valve 4, and outdoor heat exchanger 7 is carried out to defrost, has improved like this defrost speed and effect.Like this, in the process of defrost, do not need to switch the operational mode of air-conditioning system, can keep the hot blast that blows out that indoor heat exchanger continues, continue the pattern heating.
Then the second road refrigerant mixes with first via refrigerant after by the second current divider 9 and the second throttling arrangement 11 cooling decompressions, and mixed refrigerant enters in outdoor heat exchanger 7 again by first throttle device 10 and the first current divider 8.Now, outdoor heat exchanger 7 is as evaporimeter, and the suction end of compressor is got back in the refrigerant heat absorption of gasifying in outdoor heat exchanger 7 by the first electronic valve 5 and the first cross valve 2.
As shown in Figure 3, after defrost finishes, Air-condition system control the second electronic valve 3 and the 3rd electronic valve 4 are closed, the first electronic valve 5 and quadrielectron valve 6 are opened, outdoor heat exchanger 7 is completely as evaporimeter, the refrigerant of discharging from compressor all enters indoor heat exchanger and heats, and makes indoor heat exchanger in efficiently, heat state.
As another kind of embodiment, as shown in Figure 5, a plurality of isocons of a plurality of isocons of the first current divider 8 and the second current divider 9 are set in parallel in the main body of outdoor heat exchanger, a plurality of isocons of the first current divider 8 are arranged on the top of the main body of outdoor heat exchanger, and a plurality of isocons of the second current divider 9 are arranged on the bottom of the main body of outdoor heat exchanger.The first current divider 8 and the second current divider 9 are divided into two relatively independent parts by outdoor heat exchanger.Now, when needs carry out defrost to outdoor heat exchanger, need to two of outdoor heat exchanger relatively independent parts, carry out respectively defrost processing respectively step by step.Concrete defrost process is as follows:
Step 1: controller detects in real time and judges whether outdoor heat exchanger needs to carry out defrost, when outdoor heat exchanger needs defrost, first controlling the second electronic valve 3 and quadrielectron valve 6 opens, the 3rd electronic valve 4 and the first electronic valve 5 are closed, and the first valve port a of the first cross valve 2 is communicated with the first stream.First a wherein part for outdoor heat exchanger 7 is carried out to defrost.As shown in Figure 1, refrigerant flow process is identical with option A with defrost principle, repeats no more herein for refrigerant circulation process.
Step 2: after the defrost in step 1 completes, control the 3rd electronic valve 4 and the first electronic valve 5 and open, the second electronic valve 3 and quadrielectron valve 6 are closed, and the first valve port a of the first cross valve 2 is communicated with the second stream.Now another part of outdoor heat exchanger 7 is carried out to defrost.As shown in Figure 2, refrigerant flow process is identical with option b with defrost principle, repeats no more herein for refrigerant circulation.
As shown in Figure 3, after defrost finishes, Air-condition system control the second electronic valve 3 and the 3rd electronic valve 4 are closed, the first electronic valve 5 and quadrielectron valve 6 are opened, outdoor heat exchanger 7 is completely as evaporimeter, the refrigerant of discharging from compressor 1 all enters indoor heat exchanger 12 and heats, and makes indoor heat exchanger 12 in efficiently, heat state.
As shown in Figure 7, the invention still further relates to a kind of control method of air-conditioning system, for the air-conditioning system of above-described embodiment one continue heat, comprise the steps:
When outdoor heat exchanger enters defrost pattern, the second electronic valve and the quadrielectron valve open of controller by-pass valve control device, the 3rd electronic valve of the first electronic valve and described valving is closed, and makes the first valve port of the first cross valve be communicated with the first stream.Whether the real-time sensing chamber of controller external heat exchanger needs to carry out defrost, when if outdoor heat exchanger need to carry out defrost, from the refrigerant of the discharge of compressor, by the first cross valve, be divided into two-way, first via refrigerant enters outdoor heat exchanger by the second electronic valve to carry out through first throttle device, discharging after defrost, the second road refrigerant enters after indoor heat exchanger heats and mixes with first via refrigerant, mixed refrigerant enters outdoor heat exchanger through the second throttling arrangement again, now, outdoor heat exchanger is completely as evaporimeter, guarantee the heating effect of air-conditioning system, mixed refrigerant is got back to the air entry of compressor through quadrielectron valve.
Or the second electronic valve and the quadrielectron valve closing of controller by-pass valve control device, the 3rd electronic valve of the first electronic valve and described valving is opened, and makes the first valve port of the first cross valve be communicated with the second stream.Whether the real-time sensing chamber of controller external heat exchanger needs to carry out defrost, and the Rule of judgment of defrost can be the temperature of discharge of outdoor heat exchanger or temperature of outdoor environment etc.When if outdoor heat exchanger need to carry out defrost, from the refrigerant of the discharge of compressor, by the first cross valve, be divided into two-way, first via refrigerant enters outdoor heat exchanger by the 3rd electronic valve to carry out through the second throttling arrangement, discharging after defrost, the second road refrigerant enters after indoor heat exchanger heats and mixes with first via refrigerant, mixed refrigerant enters outdoor heat exchanger through first throttle device again, now, outdoor heat exchanger is completely as evaporimeter, the heating effect that guarantees air-conditioning system, mixed refrigerant is got back to the air entry of compressor through the first electronic valve.
When outdoor heat exchanger does not need to carry out defrost, controller is controlled the quadrielectron valve open of the first electronic valve and described valving, the second electronic valve of described valving and the 3rd electronic valve are closed, and make the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.Now, outdoor heat exchanger 7 is completely as evaporimeter, and the refrigerant of discharging from compressor all enters indoor heat exchanger and heats, and makes indoor heat exchanger in efficiently, heat state.
More preferably, also comprise the steps:
When outdoor heat exchanger defrost finishes, controller is controlled the quadrielectron valve open of the first electronic valve and described valving, the second electronic valve of described valving and the 3rd electronic valve are closed, and make the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.Whether the defrost of the real-time sensing chamber of controller external heat exchanger finishes, if outdoor heat exchanger defrost finishes, outdoor heat exchanger 7 is completely as evaporimeter, and the refrigerant of discharging from compressor all enters indoor heat exchanger and heats, and makes indoor heat exchanger in efficiently, heat state.If outdoor heat exchanger defrost does not finish, controller is controlled and is continued outdoor heat exchanger to carry out defrost.
As shown in Figure 8, the invention still further relates to a kind of control method of air-conditioning system, for the air-conditioning system of above-described embodiment two continue heat, comprise the steps:
When outdoor heat exchanger enters defrost pattern, controller controls the first electronic valve and cuts out, the 5th electronic valve of valving is opened, the first valve port of the second cross valve of described valving is communicated with the second valve port of described the second cross valve or the 4th valve port of described the second cross valve, makes the first valve port of the first cross valve be communicated with the second stream or the first stream.
Whether the real-time sensing chamber of controller external heat exchanger needs to carry out defrost, and the Rule of judgment of defrost can be the temperature of discharge of outdoor heat exchanger or temperature of outdoor environment etc.When outdoor heat exchanger needs defrost, the first valve port of the first cross valve is communicated with the second stream or the first stream, and high temperature refrigerant directly enters in outdoor heat exchanger, has improved speed and the effect of defrost.When outdoor heat exchanger does not need to carry out defrost, controller is controlled the first electronic valve and is opened, the 5th electronic valve of described valving is closed, the first valve port of the second cross valve of described valving is communicated with the second valve port of described the second cross valve or the 4th valve port of described the second cross valve, makes the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.
More preferably, also comprise the steps:
When outdoor heat exchanger defrost finishes, controller is controlled the first electronic valve and is opened, the 5th electronic valve of described valving is closed, the first valve port of the second cross valve of described valving is communicated with the second valve port of described the second cross valve or the 4th valve port of described the second cross valve, makes the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.
Whether the defrost of the real-time sensing chamber of controller external heat exchanger finishes, when outdoor heat exchanger defrost finishes, outdoor heat exchanger 7 is completely as evaporimeter, and the refrigerant of discharging from compressor all enters indoor heat exchanger and heats, and makes indoor heat exchanger in efficiently, heat state.If outdoor heat exchanger defrost does not finish, controller is controlled and is continued outdoor heat exchanger to carry out defrost.
Air-conditioning system of the present invention and control method thereof, when outdoor heat exchanger need to carry out defrost, valving is controlled the first stream or second stream of the selectable communication chamber external heat exchanger of the first valve port of the first cross valve, from the refrigerant of the HTHP of the discharge of compressor, by the first cross valve, be divided into two-way, one road refrigerant enters indoor heat exchanger and heats, and makes to still have hot blast to blow out in the process of air-conditioning defrost; Another road refrigerant directly enters outdoor heat exchanger by the first stream or the second stream and carries out defrost, has improved defrost speed, has strengthened defrost effect; Then after the mixing of two-way refrigerant, enter again outdoor heat exchanger evaporation and heat, guaranteed the heating effect of air-conditioning system; Finally, refrigerant is got back to the air entry of compressor, completes and once heats circulation.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (11)
1. an air-conditioning system, comprises compressor, outdoor heat exchanger, throttling arrangement and indoor heat exchanger, and described compressor, described indoor heat exchanger, described throttling arrangement and described outdoor heat exchanger are in turn connected to form closed circuit, it is characterized in that:
Also comprise the first cross valve, described the first cross valve is serially connected between described outdoor heat exchanger and described compressor, the exhaust outlet of described compressor connects the first valve port of described the first cross valve, the second valve port of described the first cross valve is communicated with described indoor heat exchanger, the air entry that is communicated with described compressor after the 3rd valve port serial connection gas-liquid separator of described the first cross valve, the 4th valve port of described the first cross valve is communicated with described outdoor heat exchanger
Described outdoor heat exchanger is divided into the first stream and the second stream, described the first stream and described the second stream are all connected in series described throttling arrangement and are connected to described indoor heat exchanger, between described the first stream and described the second stream, be also serially connected with the first electronic valve, described the first stream and described the second stream are connected in series respectively valving and are connected to described the first cross valve, make the first valve port of described the first cross valve be communicated with described the first stream or described the second stream, high temperature refrigerant enters described the first stream, after described throttling arrangement throttling, enter described the second stream, or high temperature refrigerant enters described the second stream, after described throttling arrangement throttling, enter described the first stream.
2. air-conditioning system according to claim 1, is characterized in that:
Described valving comprises the second electronic valve, the 3rd electronic valve and quadrielectron valve;
Described outdoor heat exchanger comprises four ports, be respectively the first port, the second port, the 3rd port and the 4th port, described the first port and described the second port are connected and form described the first stream, and described the 3rd port and described the 4th port are connected and form described the second stream; Described the first electronic valve is serially connected between the 4th valve port of described the first port and described the first cross valve;
Described the second electronic valve is serially connected between described the first port and the first valve port of described the first cross valve, described the 3rd electronic valve is serially connected between described the 3rd port and the first valve port of described the first cross valve, and described quadrielectron valve is serially connected between the 4th valve port of the 3rd port and described the first cross valve.
3. air-conditioning system according to claim 1, is characterized in that:
Described valving comprises the second cross valve and the 5th electronic valve;
Described outdoor heat exchanger comprises four ports, be respectively the first port, the second port, the 3rd port and the 4th port, described the first port and described the second port are connected and form described the first stream, and described the 3rd port and described the 4th port are connected and form described the second stream; Described the first electronic valve is serially connected between described the first port and described the 3rd port;
The first valve port of described the second cross valve is connected in series the first valve port that described the 5th electronic valve is connected to described the first cross valve, and the second valve port of described the second cross valve is connected to described the 3rd port; The 3rd valve port of described the second cross valve connects the 4th valve port of described the first cross valve, and the 4th valve port of described the second cross valve is connected to described the first port.
4. air-conditioning system according to claim 1, is characterized in that:
Described throttling arrangement comprises first throttle device and the second throttling arrangement;
Described the first stream is connected in series described first throttle device and is connected to described indoor heat exchanger, and described second is connected in series described the second throttling arrangement and is connected to described indoor heat exchanger.
5. air-conditioning system according to claim 4, is characterized in that:
Described outdoor heat exchanger comprises current divider and discharge;
The quantity of described current divider is two, is respectively the first current divider and the second current divider, and the quantity of described discharge is two, is respectively the first discharge and the second discharge;
The first current divider described in described first throttle device serial connection, corresponding connection of described the first discharge and described the first current divider forms described the first stream, the second current divider described in described the second throttling device serial connection, described the second discharge forms described the second stream with the corresponding connection of described the second current divider.
6. air-conditioning system according to claim 5, is characterized in that:
A plurality of isocons of described the first current divider and a plurality of isocons of described the second current divider are set in parallel in the main body of described outdoor heat exchanger, the arrangement mode of a plurality of isocons of described the first current divider and a plurality of isocons of described the second current divider is an isocon of described the first current divider and an isocon alternative arrangement of described the second current divider, and cycle arrangement is in the main body of described outdoor heat exchanger.
7. air-conditioning system according to claim 5, is characterized in that:
A plurality of isocons of described the first current divider and a plurality of isocons of described the second current divider are set in parallel in the main body of described outdoor heat exchanger, a plurality of isocons of described the first current divider are arranged on the top of the main body of described outdoor heat exchanger, and a plurality of isocons of described the second current divider are arranged on the bottom of the main body of described outdoor heat exchanger.
8. a control method for air-conditioning system, for air-conditioning system claimed in claim 2 continue heat, it is characterized in that, comprise the steps:
When outdoor heat exchanger enters defrost pattern, the second electronic valve and the quadrielectron valve open of controller by-pass valve control device, the 3rd electronic valve of the first electronic valve and described valving is closed, and makes the first valve port of the first cross valve be communicated with the first stream;
Or the second electronic valve and the quadrielectron valve closing of controller by-pass valve control device, the 3rd electronic valve of the first electronic valve and described valving is opened, and makes the first valve port of the first cross valve be communicated with the second stream.
9. the control method of air-conditioning system according to claim 8, is characterized in that, also comprises the steps:
When outdoor heat exchanger defrost finishes, controller is controlled the quadrielectron valve open of the first electronic valve and described valving, the second electronic valve of described valving and the 3rd electronic valve are closed, and make the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.
10. a control method for air-conditioning system, for air-conditioning system claimed in claim 3 continue heat, comprise the steps:
When outdoor heat exchanger enters defrost pattern, controller controls the first electronic valve and cuts out, the 5th electronic valve of valving is opened, the first valve port of the second cross valve of described valving is communicated with the second valve port of described the second cross valve or the 4th valve port of described the second cross valve, makes the first valve port of the first cross valve be communicated with the second stream or the first stream.
The control method of 11. air-conditioning systems according to claim 10, is characterized in that, also comprises the steps:
When outdoor heat exchanger defrost finishes, controller is controlled the first electronic valve and is opened, the 5th electronic valve of described valving is closed, the first valve port of the second cross valve of described valving is communicated with the second valve port of described the second cross valve or the 4th valve port of described the second cross valve, makes the 4th valve port of the first cross valve be communicated with the first stream and the second stream simultaneously.
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| CN104697240A (en) * | 2015-04-06 | 2015-06-10 | 林志辉 | High-stability multifunctional heat pump system |
| CN105627432A (en) * | 2015-12-25 | 2016-06-01 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN106766331A (en) * | 2016-12-12 | 2017-05-31 | 广东美的暖通设备有限公司 | Non- reverse defrost multi-connected air conditioning system and air-conditioning |
| CN106871381A (en) * | 2017-04-01 | 2017-06-20 | 青岛海尔空调器有限总公司 | Air conditioner without shutting Defrost operation method |
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| CN110617643A (en) * | 2018-07-08 | 2019-12-27 | 张宸浩 | Self-defrosting type energy-saving environment-friendly air conditioning unit |
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| CN114198857A (en) * | 2021-11-17 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air conditioner control method and air conditioner system |
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| CN106918122A (en) * | 2017-04-01 | 2017-07-04 | 青岛海尔空调器有限总公司 | Air conditioner without shutting Defrost operation method |
| CN107023950B (en) * | 2017-04-01 | 2020-07-31 | 青岛海尔空调器有限总公司 | Defrosting operation method for air conditioner without stopping |
| CN106871381A (en) * | 2017-04-01 | 2017-06-20 | 青岛海尔空调器有限总公司 | Air conditioner without shutting Defrost operation method |
| CN106871381B (en) * | 2017-04-01 | 2020-05-29 | 青岛海尔空调器有限总公司 | Defrosting operation method for air conditioner without stopping |
| CN107023948B (en) * | 2017-04-01 | 2020-05-29 | 青岛海尔空调器有限总公司 | Air conditioner and non-stop defrosting operation method thereof |
| CN107388624A (en) * | 2017-07-19 | 2017-11-24 | 珠海格力电器股份有限公司 | Heat pump and its control method |
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| CN114198857A (en) * | 2021-11-17 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air conditioner control method and air conditioner system |
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