CN105627612B - The refrigeration control method of outdoor unit refrigerant pipe-line system, air conditioner and air conditioner - Google Patents
The refrigeration control method of outdoor unit refrigerant pipe-line system, air conditioner and air conditioner Download PDFInfo
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- CN105627612B CN105627612B CN201610008926.4A CN201610008926A CN105627612B CN 105627612 B CN105627612 B CN 105627612B CN 201610008926 A CN201610008926 A CN 201610008926A CN 105627612 B CN105627612 B CN 105627612B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
Abstract
The present invention discloses the refrigeration control method of a kind of outdoor unit refrigerant pipe-line system, air conditioner and air conditioner, the outdoor unit refrigerant pipe-line system includes compressor, outdoor heat exchange device and first throttling device, and the outdoor unit refrigerant pipe-line system further included cooling heat-exchanger and a bypass；The cooling heat-exchanger of crossing includes the first heat-exchanging component and the second heat-exchanging component and second throttling device；One end of the bypass is connected with the exhaust outlet of the compressor, and the other end is connected with the first end of first heat-exchanging component；The bypass is equipped with the first solenoid valve.The present invention was by setting cooling heat-exchanger and bypass, in cryogenic refrigeration, open the first solenoid valve in bypass, cooling heat-exchanger will be crossed directly to be connected with the exhaust outlet of compressor, at this moment, the refrigerant discharged by exhaust outlet was entered directly into cooling heat-exchanger, and cooling heat-exchanger is used as condenser, condensing pressure can be effectively promoted, ensures the stability of outdoor unit refrigerant pipe-line system operation.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of outdoor unit refrigerant pipe-line system, air conditioner and air conditioner
Refrigeration control method.
Background technology
In today that environmental protection, ideas of energy-saving are increasingly received by everybody, many air-conditioning systems, particularly high-capacity air conditioning system
Refrigeration technique or air injection enthalpy-increasing technology was begun to use to improve system capability efficiency.It is single in these high-capacity air conditioning systems
The capacity of set system usually has ten even tens or more, particularly multi-connected machine, and set of system can be by identical or different
The wired in parallel of capacity, inside modules also have multiple compressors.
In these high-capacity air conditioning systems, not only to meet the ability output under the big load of high temperature, also to ensure system
Output under Smaller load, it is also necessary to ensure the global reliability of the unit in the case where Smaller load exports, in this way, system capability output
Scope is adjusted just into a crucial control technology.
In previous refrigeration equipment, often by reducing compressor operating frequency to reduce output, closing fractional distilling tube with
Improve condensing pressure.But in hicap, since compressor displacement is larger and the limitation of compressor minimum operating frequency,
The output of compressor can not possibly be dropped to very low；In addition, part system can reduce heat-transfer surface by closing fractional distilling tube
Product, but the condensing pressure of raising system is also not enough under extreme conditions, still it is present with compressor and flows back to the gas degree of superheat not
The problem of sufficient, influences the reliability and comfort of system.
The content of the invention
The main object of the present invention is to provide a kind of outdoor unit refrigerant pipe-line system, it is intended to effectively improve outdoor unit refrigerant pipe
The condensing pressure of road system, to ensure the stability of outdoor unit refrigerant pipe-line system operation.
To achieve the above object, outdoor unit refrigerant pipe-line system proposed by the present invention, including compressor, outdoor heat exchange device
And first throttling device, the outdoor unit refrigerant pipe-line system further included cooling heat-exchanger and a bypass；
The cooling heat-exchanger of crossing includes parallel arrangement of first heat-exchanging component and the second heat-exchanging component and the second throttling
Device, the first end of first heat-exchanging component are connected with the first throttling device, the second end of first heat-exchanging component
For being connected with one end of indoor heat-exchanger rig, the second end of first heat-exchanging component passes through the second throttling device and institute
The first end connection of the second heat-exchanging component is stated, the second end of second heat-exchanging component and the gas returning port of compressor connect；
One end of the bypass is connected with the exhaust outlet of the compressor, the other end and the first of first heat-exchanging component
End connection；The bypass is equipped with the first solenoid valve.
Preferably, the outdoor unit refrigerant pipe-line system further includes four-way valve, and the first port of the four-way valve is used to connect
Connect the exhaust outlet of the compressor；The second port of the four-way valve is used to connect the outdoor heat exchange device；The four-way valve
Third port be used to connect the gas returning port of the compressor；4th port of the four-way valve is for heat-exchanger rig in junction chamber
The other end.
Preferably, oil eliminator is equipped between the first port of the exhaust outlet of the compressor and the four-way valve；It is described
Bypass is connected to the exhaust outlet of the compressor by the oil eliminator.
Preferably, gas-liquid separator is equipped between the third port of the gas returning port of the compressor and the four-way valve；Institute
The second end for stating the second heat-exchanging component is connected to the gas returning port of the compressor by the gas-liquid separator.
Preferably, second solenoid valve is equipped between the second end of second heat-exchanging component and the gas-liquid separator.
The present invention also proposes a kind of air conditioner, including indoor unit, outdoor unit, detection device and controller, the outdoor unit
Including compressor, outdoor heat exchange device and first throttling device, the outdoor unit refrigerant pipe-line system further includes supercooling heat exchange
Device and a bypass；It is described cross cooling heat-exchanger include parallel arrangement of first heat-exchanging component and the second heat-exchanging component and
Second throttling device, the first end of first heat-exchanging component are connected with the first throttling device, first heat-exchanging component
Second end for being connected with one end of indoor heat-exchanger rig, the second end of first heat-exchanging component throttles by described second
Device is connected with the first end of second heat-exchanging component, and the second end of second heat-exchanging component and the gas returning port of compressor connect
It connects；One end of the bypass is connected with the exhaust outlet of the compressor, and the first end of the other end and first heat-exchanging component connects
It connects；The bypass is equipped with the first solenoid valve；The controller is electrically connected with the detection device and first solenoid valve,
The detection device is used to detect outdoor temperature, the total energy need of indoor unit and the pressure at expulsion of compressor；The controller is used for
Detection outdoor temperature, the total energy of indoor unit detected according to the detection device needs and the pressure at expulsion of compressor, judges whether
It needs to open cryogenic refrigeration pattern；When judging to need to open cryogenic refrigeration pattern, first solenoid valve is controlled to open to lead
Lead to the bypass.
Preferably, the detection device includes：
Temperature detecting module, on the outdoor unit, for detecting outdoor temperature；
Detection module can be needed, on the indoor unit, the total energy for detecting indoor unit needs；And
Pressure detecting module, on the compressor, for detecting the pressure at expulsion of compressor.
Preferably, the controller includes：
First judgment module, for judging whether outdoor temperature is less than preset temperature；
Second judgment module, whether the total energy for judging indoor unit, which need to be less than default total energy, needs；
3rd judgment module, for judging whether the pressure at expulsion of compressor is less than preset pressure；And
Determination module, for being less than preset temperature in outdoor temperature, the total energy of indoor unit need to can be needed and pressed less than default
When the pressure at expulsion of contracting machine is less than preset pressure, judgement needs to open cryogenic refrigeration pattern.
The present invention also proposes a kind of refrigeration control method of air conditioner, and the air conditioner includes indoor unit, outdoor unit, detection
Device and controller, the outdoor unit include compressor, outdoor heat exchange device and first throttling device, the outdoor unit refrigerant
Pipe-line system further included cooling heat-exchanger and a bypass；The cooling heat-exchanger of crossing includes parallel arrangement of first heat exchange group
Part and the second heat-exchanging component and second throttling device, first end and the first throttling device of first heat-exchanging component
Connection, the second end of first heat-exchanging component are used to be connected with one end of indoor heat-exchanger rig, first heat-exchanging component
Second end is connected by the second throttling device with the first end of second heat-exchanging component, and the of second heat-exchanging component
The gas returning port of two ends and compressor connects；One end of the bypass is connected with the exhaust outlet of the compressor, the other end with it is described
The first end connection of first heat-exchanging component；The bypass is equipped with the first solenoid valve；The controller and the detection device and
First solenoid valve is electrically connected, and the detection device is used to detect outdoor temperature, the total energy need of indoor unit and compressor
Pressure at expulsion；The controller is used for the detection outdoor temperature detected according to the detection device, indoor unit can be needed and pressed
The pressure at expulsion of contracting machine judges whether to need to run cryogenic refrigeration pattern；When being determined as cryogenic refrigeration pattern, control described the
One solenoid valve is opened to turn on the bypass；The refrigeration control method, comprises the following steps：
When normal refrigerating mode is run, acquisition outdoor temperature, the total energy of indoor unit needs and the pressure at expulsion of compressor, sentences
It is disconnected whether to need to open cryogenic refrigeration pattern；
When judging to need to open cryogenic refrigeration pattern, first solenoid valve is controlled to open to turn on the bypass.
Preferably, the air conditioner is when normal refrigerating mode is run, and obtains outdoor temperature, indoor unit can be needed and pressed
The pressure at expulsion of contracting machine judges whether to include the step of needing cryogenic refrigeration pattern：
Judge whether outdoor temperature is less than preset temperature；
If so, judging whether the total energy of indoor unit need to be less than default total energy and need；
If so, judging whether the pressure at expulsion of compressor is less than preset pressure；
If so, judge to need to open cryogenic refrigeration pattern.
Technical solution of the present invention by setting cooling heat-exchanger and bypass, in cryogenic refrigeration, opens the in bypass
The first heat-exchanging component for crossing cooling heat-exchanger directly with the exhaust outlet of compressor is connected, at this moment, is arranged by exhaust outlet by one solenoid valve
The refrigerant gone out was entered directly into the first heat-exchanging component of cooling heat-exchanger, and the first heat-exchanging component for crossing cooling heat-exchanger is made
It is used for condenser, can effectively promote condensing pressure, ensure the stability of outdoor unit refrigerant pipe-line system operation.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Structure according to these attached drawings obtains other attached drawings.
Fig. 1 is the framework schematic diagram of outdoor unit refrigerant pipe-line system first embodiment of the present invention；
Fig. 2 is outdoor unit refrigerant pipe-line system shown in FIG. 1, and the refrigerant in normal refrigerating mode flows to schematic diagram；
Fig. 3 is outdoor unit refrigerant pipe-line system shown in FIG. 1, and the refrigerant in cryogenic refrigeration pattern flows to schematic diagram；
Fig. 4 is the framework schematic diagram of outdoor unit refrigerant pipe-line system second embodiment of the present invention；
Fig. 5 is the framework schematic diagram of outdoor unit refrigerant pipe-line system 3rd embodiment of the present invention；
Fig. 6 is the framework schematic diagram of outdoor unit refrigerant pipe-line system fourth embodiment of the present invention；
Fig. 7 is the framework schematic diagram of the 5th embodiment of outdoor unit refrigerant pipe-line system of the present invention；
Fig. 8 is the module map of one embodiment of air conditioner of the present invention；
Fig. 9 is the module map of an embodiment of the detection device in Fig. 8；
Figure 10 is the module map of an embodiment of the controller in Fig. 8；
Figure 11 is the flow chart of one embodiment of refrigeration control method of air conditioner of the present invention；
Figure 12 is the flow chart of an embodiment of the step S10 of Figure 11.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | Outdoor unit | 200 | Indoor unit |
| 300 | Detection device | 400 | Controller |
| 110 | Compressor | 120 | Outdoor heat exchange device |
| 130 | First throttling device | 140 | Cross cooling heat-exchanger |
| 150 | Bypass | 160 | Four-way valve |
| 170 | Oil eliminator | 180 | Gas-liquid separator |
| 190 | Second solenoid valve | 112 | Gas returning port |
| 114 | Exhaust outlet | 142 | First heat-exchanging component |
| 144 | Second heat-exchanging component | 146 | Second throttling device |
| 152 | First solenoid valve | 320 | Temperature detecting module |
| 340 | It can need detection module | 360 | Pressure detecting module |
| 420 | First judgment module | 440 | Second judgment module |
| 460 | 3rd judgment module | 480 | Determination module |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each component etc., if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for description purpose, and it is not intended that referring to
Show or imply its relative importance or imply the quantity of the technical characteristic indicated by indicating." first ", " are defined as a result,
At least one this feature can be expressed or be implicitly included to two " feature.In addition, the technical solution between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or can not realize when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention proposes a kind of outdoor unit refrigerant pipe-line system, and outdoor unit refrigerant pipe-line system is the refrigerant circulation of air conditioner
The part for being located outside machine of system.
Referring to figs. 1 to Fig. 3, Fig. 1 is the framework schematic diagram of outdoor unit refrigerant pipe-line system first embodiment of the present invention；Fig. 2
Refrigerant when normally freezing for outdoor unit refrigerant pipe-line system of the present invention flows to schematic diagram；Fig. 3 is outdoor unit refrigerant pipe of the present invention
Refrigerant during the system hypothermia refrigeration of road flows to schematic diagram.
In embodiments of the present invention, the outdoor unit refrigerant pipe-line system includes compressor 110, outdoor heat exchange device 120
And first throttling device 130, the outdoor unit refrigerant pipe-line system further included the bypass of cooling heat-exchanger 140 and one 150；
The cooling heat-exchanger 140 of crossing includes parallel arrangement of first heat-exchanging component, 142 and second heat-exchanging component 144 and the second section
Device 146 is flowed, the first end of first heat-exchanging component 142 is connected with the first throttling device 130, the first heat exchange group
The second end of part 142 with one end of indoor heat-exchanger rig (not shown) for being connected, the second end of first heat-exchanging component 142
It is connected by the second throttling device 146 with the first end of second heat-exchanging component 144, second heat-exchanging component 144
Second end be connected with the gas returning port 112 of compressor 110；One end of the bypass 150 and the exhaust outlet of the compressor 110
114 connections, the other end are connected with the first end of first heat-exchanging component 142；The bypass 150 is equipped with the first solenoid valve
152。
Specifically, in the present embodiment, the first throttling device 130 can be electric expansion valve；First heat exchange
142 and second heat-exchanging component 144 of component is specially heat exchanger.
When air conditioner normally freezes, as shown in Figures 1 and 2, first solenoid valve 152 is closed, to end the side
Road 150；The refrigerant discharged by the exhaust outlet 114 of the compressor 110 is successively by the outdoor heat exchange device 120, first segment
Enter first heat-exchanging component 142 after stream device 130, by the first end of first heat-exchanging component 142；It is changed with described first
After hot 142 heat exchange of component, discharged by the second end of first heat-exchanging component 142；The refrigerant of discharge is divided into two parts, and first
Part enters the indoor heat-exchanger rig；After second portion throttles via the second throttling device 146, exchanged heat by described second
The first end of component 144, into second heat-exchanging component 144；After 144 heat exchange of the second heat-exchanging component, by described
The gas returning port 112 of compressor 110 is back in compressor 110；The second portion refrigerant is used for first portion's refrigerant through one
Portion cools down, to improve condensing pressure.At this moment, the outdoor heat exchange device 120 is used as condenser.
When air conditioner cryogenic refrigeration, as shown in Figures 1 and 3, first solenoid valve 152 is opened, to turn on the side
Road 150；Institute is entered by the first end of first heat-exchanging component 142 by the refrigerant that the exhaust outlet 114 of the compressor 110 is discharged
State the first heat-exchanging component 142；After 142 heat exchange of the first heat-exchanging component, by the second end of first heat-exchanging component 142
Discharge；The refrigerant of discharge is divided into two parts, and first portion enters the indoor heat-exchanger rig；Second portion is via the described second section
After flowing the throttling of device 146, by the first end of second heat-exchanging component 144, into second heat-exchanging component 144；With it is described
After second heat-exchanging component, 144 heat exchange, it is back to by the gas returning port 112 of the compressor 110 in compressor 110；Described second
Part refrigerant is used for first portion's refrigerant through a cooling, to improve condensing pressure.At this moment, it is described to cross cooling heat-exchanger 140
The first heat-exchanging component 142 directly as condenser, can effectively promote condensing pressure, ensure outdoor unit refrigerant pipe-line system fortune
Capable stability.
Technical scheme by setting cooling heat-exchanger 140 and bypass 150, in cryogenic refrigeration, is opened other
The first solenoid valve 152 on road 150 will cross row of the first heat-exchanging component 142 of cooling heat-exchanger 140 directly with compressor 110
Gas port 114 connects, and at this moment, the refrigerant discharged by exhaust outlet 114 entered directly into the first heat-exchanging component of cooling heat-exchanger 140
In 142, the first heat-exchanging component 142 for crossing cooling heat-exchanger 140 as condenser is used, can effectively promote condensing pressure,
Ensure the stability of outdoor unit refrigerant pipe-line system operation.
Further, as shown in Fig. 1 and Fig. 4, Fig. 4 is the framework of outdoor unit refrigerant pipe-line system second embodiment of the present invention
Schematic diagram.The present embodiment and first embodiment the difference is that, in the present embodiment, which is applicable in
In the air device of both cooling and heating, i.e., usually said dual system air conditioner.
In the present embodiment, the outdoor unit refrigerant pipeline system further includes four-way valve 160, and the first of the four-way valve 160
Port D is used to connect the exhaust outlet 114 of the compressor 110；Second port C is used to connect the outdoor heat exchange device 120；The
Three port S are used to connect the gas returning port 112 of the compressor 110；4th port E is for heat-exchanger rig in junction chamber.
When air conditioner normally freezes, when the four-way valve 160 powers on, the first port D and the second port C phases
Logical, the third port S is communicated with the 4th port E, and the refrigerant that the compressor 110 is discharged is successively via the four-way valve
160th, after outdoor heat exchange device 120, first throttling device 130, mistake cooling heat-exchanger 140, indoor heat-exchanger rig, by the compression
The gas returning port 112 of machine 110 is back in compressor 110.
When air conditioner heat-production function, when the four-way valve 160 powers off, the first port D and the 4th port E phases
Logical, the second port C leads to three port S-phase, and the refrigerant that the compressor 110 is discharged is successively via the four-way valve
160th, after indoor heat-exchanger rig, mistake cooling heat-exchanger 140, first throttling device 130, outdoor heat exchange device 120, by the compression
The gas returning port 112 of machine 110 is back in compressor 110.
Further, as shown in Figures 1 to 5, Fig. 5 is the framework of outdoor unit refrigerant pipe-line system 3rd embodiment of the present invention
Schematic diagram.The embodiment and second embodiment the difference is that：In the present embodiment, the exhaust outlet of the compressor 110
Oil eliminator 170 is equipped between 114 and the first port D of the four-way valve 160；The bypass 150 passes through the oil eliminator
170 are connected to the exhaust outlet 114 of the compressor 110.The oil eliminator 170 is used to separate lubricating oil subsidiary in refrigerant,
And then ensure SAPMAC method effect.
Further, as shown in Figures 1 to 6, Fig. 6 is the framework of outdoor unit refrigerant pipe-line system fourth embodiment of the present invention
Schematic diagram.The embodiment and 3rd embodiment the difference is that：In the present embodiment, the gas returning port of the compressor 110
Gas-liquid separator 180 is equipped between 112 and the third port S of the four-way valve 160；The second output nozzle passes through the gas
Liquid/gas separator 180 is connected to the gas returning port 112 of the compressor 110.The gas-liquid separator 180 is used to separate steam state and liquid
Refrigerant, equally ensureing SAPMAC method effect.
Further, as shown in Figures 1 to 7, Fig. 7 is the framework of the 5th embodiment of outdoor unit refrigerant pipe-line system of the present invention
Schematic diagram.The embodiment and fourth embodiment the difference is that：In the present embodiment, in the present embodiment, described second
Second solenoid valve 190 is equipped between the second end of heat-exchanging component 144 and the gas-liquid separator 180.The second solenoid valve 190
Open or close the inside coolant circulating system for crossing cooling heat-exchanger 140；Namely the second solenoid valve 190 is used to open
Or close the supercooling function of crossing cooling heat-exchanger 140.
The present invention proposes a kind of air conditioner.
As shown in figure 8, Fig. 8 is the module map of one embodiment of air conditioner of the present invention.
The air conditioner of the present embodiment includes outdoor unit 100, indoor unit 200, detection device 300 and controller 400, the room
Outer machine 100 includes outdoor unit refrigerant pipe-line system；Concrete structure reference above-described embodiment of the outdoor unit refrigerant pipe-line system,
Since this air conditioner employs whole technical solutions of above-mentioned all embodiments, the technical side at least with above-described embodiment
All advantageous effects caused by case, this is no longer going to repeat them.
Wherein, the controller 400 is electrically connected with the detection device 300 and first solenoid valve 152, the inspection
Device 300 is surveyed to be used to detect outdoor temperature, the total energy need of indoor unit 200 and the pressure at expulsion of compressor 110；The controller
400 are used for the detection outdoor temperature detected according to the detection device 300, the total energy of indoor unit 200 needs and the row of compressor 110
Atmospheric pressure judges whether to need to run cryogenic refrigeration pattern；When judging to need to open cryogenic refrigeration pattern, control described first
Solenoid valve 152 is opened to turn on the bypass 150.
The air conditioner of the present embodiment, by detecting outdoor temperature, the total energy need of indoor unit 200 and the exhaust of compressor 110
Pressure judges whether to need to run cryogenic refrigeration pattern；When being determined as cryogenic refrigeration pattern, first solenoid valve 152 is controlled
It opens to turn on the bypass 150, to enter cryogenic refrigeration pattern, realizes automatically controlling for cryogenic refrigeration pattern.
It depends on actual need and different as being judged as needing running cryogenic refrigeration pattern under what conditions, can will detect
Outdoor temperature, the total energy of indoor unit needs and the pressure at expulsion which part of compressor, compared with correspondingly setting value：Example
Such as, only outdoor temperature is surveyed in detection, the total energy of indoor unit needs and the pressure at expulsion of compressor in any one or two, Ran Houyu
Correspondingly setting value is compared, and (is surveyed outdoor temperature after correspondingly condition is met and be less than preset temperature, and/or indoor unit
Total energy need to be less than that default total energy needs, and/or the pressure at expulsion of compressor is less than default pressure at expulsion), open cryogenic refrigeration mould
Formula；Can also be by detect outdoor temperature, indoor unit total energy need and compressor pressure at expulsion with corresponding setting value into
Row compares namely outdoor temperature is surveyed in detection respectively, the total energy of indoor unit needs and the pressure at expulsion of compressor, then with correspondingly setting
Definite value is compared, and is needed and compressor surveying total energy of the outdoor temperature less than preset temperature, indoor unit and need to be less than default total energy
Pressure at expulsion when being less than default pressure at expulsion, open cryogenic refrigeration pattern.
Further, as shown in figure 9, Fig. 9 is the module map of 300 1 embodiment of detection device of air conditioner of the present invention.
The detection device 300 includes：
Temperature detecting module 320, on the outdoor unit 100, for detecting outdoor environment temperature；
Detection module 340 can be needed, on the indoor unit 200, the total energy for detecting indoor unit 200 needs；
Pressure detecting module 360, on the compressor 110, for detecting the pressure at expulsion of compressor 110；
The controller 400 and the temperature detecting module 320 can need 360 electricity of detection module 340 and pressure detecting module
Property connection.
Specifically, the temperature detecting module 320 can be temperature sensor.The pressure detecting module 360 can be
Pressure sensor.And can needing for the indoor unit 200 then can be according to specific requirements (temperature requirements, the air output of indoor
Demand etc.) and system loss carry out calculating acquisition namely described can need being adjusted according to different demands for detection module 340
It is whole namely described can need detection module 340 that can include detecting the temperature sensor of indoor environment temperature and for supplying
Setting module of user setting target temperature etc., and the total energy for obtaining indoor unit is calculated according to indoor environment temperature and target temperature
It needs.
Further, as shown in Figure 10, Figure 10 is the module map of 400 1 embodiment of controller of air conditioner of the present invention.
The controller 400 includes：
First judgment module 420, for judging whether outdoor temperature is less than preset temperature；
Second judgment module 440 needs for judging whether indoor unit 200 can be less than default total energy；
3rd judgment module 460, for judging whether the pressure at expulsion of compressor 110 is less than preset pressure；And
Determination module 480, for being less than preset temperature in outdoor temperature, the total energy of indoor unit 200 need to be less than default total energy
When the pressure at expulsion of need and compressor 110 is less than preset pressure, judgement needs to open cryogenic refrigeration pattern.
Specifically, the process of the first judgment module 420, the second judgment module 440 and the 3rd judgment module 460 is without successively
Point, and determination module 480 is only needed outdoor temperature is less than preset temperature, the total energy of indoor unit 200 need to be less than default total energy
And the pressure at expulsion of compressor 110 be less than preset pressure when, just judge need unlatching cryogenic refrigeration pattern；And when outdoor temperature is small
It need to be needed in the total energy of preset temperature, indoor unit 200 less than default total energy and the pressure at expulsion of compressor 110 is less than preset pressure
In, there are one when being unsatisfactory for, then judge that cryogenic refrigeration pattern need not be opened.
The present invention proposes a kind of refrigeration control method of air conditioner, wherein, the concrete structure of the air conditioner is with reference to above-mentioned
Embodiment.
As shown in FIG. 11 and 12, with reference to Fig. 8 to Figure 10, Figure 11 is the refrigeration control method one of air conditioner of the present invention
The flow chart of embodiment；Figure 12 is the flow chart for judging whether to need to open an embodiment of cryogenic refrigeration pattern.
The refrigeration control method of the air conditioner of the present embodiment comprises the following steps：
Step S10, in normal refrigerating mode, (namely shown outdoor heat exchange device, as condenser, indoor heat-exchanger rig is made
For evaporator when：When being opened for single system refrigeration air conditioner namely air conditioner；For dual system air conditioner namely four-way valve
When powering on) operation when, obtain outdoor temperature, indoor unit 200 total energy need and compressor 110 pressure at expulsion, judge whether need
Open cryogenic refrigeration pattern；
Specifically, as shown in figure 12, judge whether to need to open cryogenic refrigeration mode step can be：
Step S11, judge whether outdoor temperature is less than preset temperature；
Step S12, if so, judging whether the total energy of indoor unit 200 need to be less than default total energy and need；
Step S13, if so, judging whether the pressure at expulsion of compressor 110 is less than preset pressure；
Step S14, if so, judging to need to open cryogenic refrigeration pattern.
It is noted that the order between above-mentioned steps S11, step S12 and step S13 is adjustable, can equally realize
The technique effect of the present invention.
Step S20, when judging to need to open cryogenic refrigeration pattern, first solenoid valve 152 is controlled to open to turn on
The bypass 150.
The refrigeration control method of the present embodiment air conditioner, by detecting outdoor temperature, indoor unit 200 can be needed and compressed
The pressure at expulsion of machine 110 judges whether to need to run cryogenic refrigeration pattern；When being determined as cryogenic refrigeration pattern, control described the
One solenoid valve 152 is opened to turn on the bypass 150, to enter cryogenic refrigeration pattern, realizes the automatic control of cryogenic refrigeration pattern
System.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
The equivalent structure transformation made under the inventive concept of invention using description of the invention and accompanying drawing content or directly/utilization indirectly
It is included in other related technical areas in the scope of patent protection of the present invention.
Claims (10)
1. a kind of outdoor unit refrigerant pipe-line system, including compressor, outdoor heat exchange device and first throttling device, feature exists
In the outdoor unit refrigerant pipe-line system further included cooling heat-exchanger and a bypass；
The cooling heat-exchanger of crossing includes parallel arrangement of first heat-exchanging component and the second heat-exchanging component and the second throttling dress
It puts, the first end of first heat-exchanging component is connected with the first throttling device, and the second end of first heat-exchanging component is used
Be connected in one end with indoor heat-exchanger rig, the second end of first heat-exchanging component by the second throttling device with it is described
The first end connection of second heat-exchanging component, the second end of second heat-exchanging component and the gas returning port of compressor connect；
One end of the bypass is connected with the exhaust outlet of the compressor, and the first end of the other end and first heat-exchanging component connects
It connects；The bypass is equipped with the first solenoid valve.
2. outdoor unit refrigerant pipe-line system as described in claim 1, which is characterized in that further include four-way valve, the four-way valve
First port be used to connect the exhaust outlet of the compressor；The second port of the four-way valve is used to connect the outdoor heat exchange
Device；The third port of the four-way valve is used to connect the gas returning port of the compressor；4th port of the four-way valve is used for
The other end of heat-exchanger rig in junction chamber.
3. outdoor unit refrigerant pipe-line system as claimed in claim 2, which is characterized in that the exhaust outlet of the compressor with it is described
Oil eliminator is equipped between the first port of four-way valve；It is described to bypass the row that the compressor is connected to by the oil eliminator
Gas port.
4. outdoor unit refrigerant pipe-line system as claimed in claim 3, which is characterized in that the gas returning port of the compressor with it is described
Gas-liquid separator is equipped between the third port of four-way valve；The second end of second heat-exchanging component passes through the gas-liquid separator
It is connected to the gas returning port of the compressor.
5. outdoor unit refrigerant pipe-line system as claimed in claim 4, which is characterized in that the second end of second heat-exchanging component
Second solenoid valve is equipped between the gas-liquid separator.
6. a kind of air conditioner, including indoor unit, outdoor unit, detection device and controller, which is characterized in that the outdoor unit includes
Outdoor unit refrigerant pipe-line system as any one of claim 1 to 5；The controller and the detection device and described
First solenoid valve is electrically connected, and the detection device is used to detect outdoor temperature, the total energy need of indoor unit and the exhaust of compressor
Pressure；The controller is used for the detection outdoor temperature detected according to the detection device, the total energy of indoor unit needs and compressor
Pressure at expulsion, judge whether to need to open cryogenic refrigeration pattern；When judging to need to open cryogenic refrigeration pattern, described in control
First solenoid valve is opened to turn on the bypass.
7. air conditioner as claimed in claim 6, which is characterized in that the detection device includes：
Temperature detecting module, on the outdoor unit, for detecting outdoor temperature；
Detection module can be needed, on the indoor unit, the total energy for detecting indoor unit needs；And
Pressure detecting module, on the compressor, for detecting the pressure at expulsion of compressor.
8. air conditioner as claimed in claim 6, which is characterized in that the controller includes：
First judgment module, for judging whether outdoor temperature is less than preset temperature；
Second judgment module, whether the total energy for judging indoor unit, which need to be less than default total energy, needs；
3rd judgment module, for judging whether the pressure at expulsion of compressor is less than preset pressure；And
Determination module, for being less than preset temperature in outdoor temperature, the total energy of indoor unit need to be needed less than default total energy and compressor
Pressure at expulsion be less than preset pressure when, judgement need open cryogenic refrigeration pattern.
9. a kind of refrigeration control method of air conditioner as described in any one in claim 6 to 8, which is characterized in that including
Following steps：
When normal refrigerating mode is run, outdoor temperature is obtained, the total energy of indoor unit needs and the pressure at expulsion of compressor, judgement are
It is no to need to open cryogenic refrigeration pattern；
When judging to need to open cryogenic refrigeration pattern, first solenoid valve is controlled to open to turn on the bypass.
10. the refrigeration control method of air conditioner as claimed in claim 9, which is characterized in that the air conditioner is normally freezing
During mode operation, acquisition outdoor temperature, the total energy of indoor unit needs and the pressure at expulsion of compressor, judges whether to need cryogenic refrigeration
The step of pattern, includes：
Judge whether outdoor temperature is less than preset temperature；
If so, judging whether the total energy of indoor unit need to be less than default total energy and need；
If so, judging whether the pressure at expulsion of compressor is less than preset pressure；
If so, judge to need to open cryogenic refrigeration pattern.
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| CN110542236A (en) * | 2019-09-12 | 2019-12-06 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof, and computer-readable storage medium |
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| CN106839294A (en) * | 2017-01-17 | 2017-06-13 | 广东美的暖通设备有限公司 | Control method and device when multiple on-line system and its cryogenic refrigeration |
| CN106871379B (en) * | 2017-03-30 | 2019-12-03 | 广东美的暖通设备有限公司 | Air-conditioning system and its compressor control method and device |
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| CN110285497B (en) * | 2019-06-28 | 2021-07-16 | 广东美的制冷设备有限公司 | Air conditioner outdoor unit and air conditioner control method |
| CN110529993B (en) * | 2019-09-09 | 2021-04-20 | 广东美的暖通设备有限公司 | Operation control device and method, air conditioner, and computer-readable storage medium |
| CN113654263B (en) * | 2021-07-30 | 2022-10-21 | 美的集团武汉暖通设备有限公司 | Control method and control device of air conditioner, air conditioner and readable storage medium |
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