CN106403068A - Defrosting system and defrosting method of air conditioner, air conditioner and air conditioner control method - Google Patents
Defrosting system and defrosting method of air conditioner, air conditioner and air conditioner control method Download PDFInfo
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- CN106403068A CN106403068A CN201610833561.9A CN201610833561A CN106403068A CN 106403068 A CN106403068 A CN 106403068A CN 201610833561 A CN201610833561 A CN 201610833561A CN 106403068 A CN106403068 A CN 106403068A
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- air
- compressor
- heat exchanger
- interface
- outdoor heat
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/10—Arrangement or mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- 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
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- 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
Abstract
The invention relates to the field of air conditioning control and particularly relates to a defrosting system and a defrosting method of an air conditioner, the air conditioner and an air conditioner control method. The defrosting system of the air conditioner comprises a variable-capacity air replenishing and enthalpy increasing compressor, an outdoor heat exchanger and an indoor heat exchanger, wherein the compressor is provided with a single-rotor mode and double-rotor mode switching valve; and an air vent of the compressor communicates with both the inlet of the outdoor heat exchanger and the inlet of the indoor heat exchanger through pipelines. According to the defrosting system and defrosting method of the air conditioner, the air conditioner and the air conditioner control method, enhanced vapor injection and compressor capacity variation technologies are introduced; by adopting a double-rotor mode, the air output of the compressor can be increased, and a part of the exhausted air enters the outdoor heat exchanger in a bypassing way and is applied to defrosting operation; and thus, a defrosting effect can be guaranteed, the heating capacity of the indoor heat exchanger is not affected as well, and the heating comfort of the air conditioner can be improved.
Description
Technical field
The present invention relates to airconditioning control field, more particularly to air conditioner defrosting system, Defrost method and air-conditioning and air-conditioning control
Method processed.
Background technology
In winter, in heating process, because outdoor temperature is relatively low, outdoor heat exchanger (condenser) easily produces air-conditioner
Raw frost, and heat exchanger frosting is one of key factor of impact air conditioning system operational efficiency.Frost can increase and changes
, so as to the coefficient of heat transfer reduces, heat transfer efficiency declines for the thermal resistance on hot device surface and windage.Therefore, reach certain journey in frost
When spending, heat exchanger is needed to carry out defrosting operation, to recover its heat exchange property.
At present in air conditioner industry, for optimizing the defrosting effect of heat exchanger, mainly control from heat exchanger structure, system operation
And defrosting these three aspects of control logic are carried out, defrosting process is：Air conditioning system proceeds to refrigerating operaton from heating operation, from room
Interior draw heat is put and is carried out defrost to outdoor heat exchanger.This defrost pattern needs from indoor heat absorption during defrost, thus meeting
Cause the reduction of indoor temperature, during defrost, leaving air temp is low, and the defrost time is typically longer.Experimental data shows：Commonly
During defrosting, room temperature fluctuates 6～9 DEG C air conditioning system, defrosting time about 5min.User can substantially experience air-conditioning system
Sometimes hot and sometimes cold phenomenon occurs in thermal process, has a strong impact on the comfortableness of air-conditioning use.
Can also continue to indoor quantity of heat given up in order to realize air conditioning system while defrosting, can be in common air-conditioning system
On the basis of, it is vented to outdoor heat exchanger from a compressor air vent bypass part and is used for defrost, realize persistently heating.But it is this
Method reduces the high temperature refrigerant gas flow getting in heat exchanger, thus weakening indoor heat exchanger heating capacity, air-out
Temperature still can reduce, and effect is limited.
Content of the invention
(1) technical problem to be solved
It is an object of the invention to provide can either defrosting and not affecting the mode of indoor heating.
(2) technical scheme
In order to solve above-mentioned technical problem, the present invention provides a kind of air conditioner defrosting system, and it includes：Variable capacity Gas-supplying enthalpy-increasing
Compressor, outdoor heat exchanger and indoor heat exchanger, described compressor is furnished with single birotor mode switching valve, in single rotor
The operation mode of described compressor is changed, the air vent of described compressor passes through pipeline and institute respectively between pattern and birotor pattern
State the hot gas inlet of outdoor heat exchanger, the hot gas inlet connection of described indoor heat exchanger, the described compression under birotor pattern
Machine send steam to described outdoor heat exchanger, described indoor heat exchanger.
In certain embodiments, preferably, the hot gas inlet of the air vent of described compressor and described outdoor heat exchanger it
Between pipeline on the check valve supplied gas to described outdoor heat exchanger from described compressor is set.
In certain embodiments, preferably, described single birotor mode switching valve is three-way valve, the first of described three-way valve
Interface is connected with the air vent of described compressor, and second interface is connected with the second air entry of described compressor, the 3rd interface with
The fluid reservoir first inlet connection of described compressor；
It is birotor pattern when described second interface and described three orifice；
It is single rotor pattern when described second interface connects with described first interface.
In certain embodiments, preferably, air conditioner defrosting system also includes four-way change-over valve, the S of described four-way change-over valve
Interface connects with fluid reservoir the first inlet n of described compressor, and E interface is connected with the hot gas inlet of described indoor heat exchanger
Logical, C interface is connected with the gas outlet of described outdoor heat exchanger, and D interface is connected with the air vent of described compressor.
In certain embodiments, preferably, described air conditioner defrosting system also includes：Temperature measurement component and control assembly, institute
State temperature measurement component and be installed on described outdoor heat exchanger, to measure the temperature of described outdoor heat exchanger, described temperature measurement component, described list
All it is connected with described control assembly to valve, described single birotor mode switching valve and described four-way change-over valve.
Present invention also offers a kind of air-conditioning, it includes：Described air conditioner defrosting system and room air regulator control system.
In certain embodiments, preferably, described room air regulator control system includes：Flash vaporization components, first throttle assembly,
Second orifice union, the compression of the variable capacity Gas-supplying enthalpy-increasing of outdoor heat exchanger, indoor heat exchanger and described air conditioner defrosting system
Machine；The air inlet of the air supply tank of the compressor of variable capacity Gas-supplying enthalpy-increasing of described air conditioner defrosting system and going out of described flash vaporization components
QI KOU connects, and the outlet of described flash vaporization components is sequentially communicated described second orifice union, outdoor heat exchanger；Described flash vaporization components
Import is sequentially communicated described first throttle assembly, indoor heat exchanger.
In certain embodiments, preferably, between the gas outlet of the air inlet of described air supply tank and described flash vaporization components
The second check valve supplied gas from flash vaporization components to air supply tank is arranged on passage.
Present invention also offers a kind of air-conditioner defrosting method, it includes：
The compressor of variable capacity Gas-supplying enthalpy-increasing is adjusted to birotor mould by single birotor mode switching valve by set-up procedure
Formula；
Connection step, the air vent of the described compressor heat with the hot gas inlet of outdoor heat exchanger, indoor heat exchanger respectively
Gas entrance connects；
Gas transmission step, be in hold become Gas-supplying enthalpy-increasing under described compressor by hot compressed gas by preset ratio respectively to institute
State indoor heat exchanger conveying for heating, to the conveying of described outdoor heat exchanger for defrosting.
In certain embodiments, preferably, described single birotor mode switching valve is three-way valve, the first of described three-way valve
Interface is connected with the air vent of described compressor, and second interface is connected with the second air entry of described compressor, the 3rd interface with
The fluid reservoir first inlet connection of described compressor；
It is birotor pattern when described second interface and described three orifice；
It is single rotor pattern when described second interface connects with described first interface.
In certain embodiments, preferably, the hot gas inlet of the air vent of described compressor and described outdoor heat exchanger it
Between pipeline on the check valve supplied gas to described outdoor heat exchanger from described compressor is set；In described connection step, described
Check valve is opened.
In certain embodiments, preferably, described gas transmission step also includes：
To described outdoor heat exchanger conveying hot compressed gas, timing is carried out to described compressor, obtains gas transmission duration；
When described gas transmission duration is more than T0, described closed check valve, defrosting terminates.
In certain embodiments, preferably, described T0 is 30～90 seconds.
In certain embodiments, preferably, before described set-up procedure, described air-conditioner defrosting method also includes：
Detect and record outdoor heat exchanger first temperature range T1 in the first setting time section from after compressor startmin
～T1max；
Detect and record outdoor heat exchanger second temperature T2 of the second setting time moment point from after compressor start；, the
Two setting time moment point are later than any instant point in described first setting time section；
Described first temperature range and described second temperature are compared, if meeting pre-conditioned, carry out described tune
Synchronizing is rapid, if being unsatisfactory for, carries out the heating operation of room air regulation and control.
In certain embodiments, preferably, described pre-conditioned it is：T1min-T2≤T30SUBT3ONE.
In certain embodiments, preferably, described T30SUBT3ONE is 5 DEG C～-11 DEG C.
In certain embodiments, preferably, described first setting time section is 8-12 minute.
In certain embodiments, preferably, described second setting time moment point is any value in 20 minutes -50 minutes.
Present invention also offers a kind of air conditioning control method, it includes：
Start the compressor of variable capacity Gas-supplying enthalpy-increasing；
Detect and record outdoor heat exchanger first temperature range in the first setting time section from after described compressor start
T1min～T1max；
Detect and record outdoor heat exchanger second temperature T2 after the second setting time moment point from after compressor start；The
Two setting time moment point are later than any instant point in described first setting time section；
Described first temperature range and described second temperature are compared, if meeting pre-conditioned, carry out described
Air-conditioner defrosting method, if being unsatisfactory for, carries out the heating operation of room air regulation and control.
In certain embodiments, preferably, described pre-conditioned it is：T1min-T2≤T30SUBT3ONE.
In certain embodiments, preferably, described T30SUBT3ONE is 5 DEG C～-11 DEG C.
In certain embodiments, preferably, described first setting time section is 8-12 minute.
In certain embodiments, preferably, described second setting time moment point is arbitrary in 20 minutes -50 minutes
Value.
In certain embodiments, preferably, the heating operation of described room conditioning regulation and control includes：
Detecting step, detects running frequency F and the current operating mode of described compressor, and described operation mode is single rotor
Pattern or birotor pattern；
Comparison step, described running frequency F is compared with presently described operation mode respective frequencies threshold value, according to than
Relatively result determines the described operation mode of maintenance or changes described operation mode.
In certain embodiments, preferably, the method for the described compressor current operating mode of detection is：
Obtain the Interface status of single birotor mode switching valve in compressor；
Determine described operation mode according to described Interface status；
Described single birotor mode switching valve is three-way valve, the aerofluxuss of the first interface of described three-way valve and described compressor
Mouth connection, second interface is connected with the second air entry of described compressor, the fluid reservoir first of the 3rd interface and described compressor
Inlet connects；It is birotor pattern when described second interface and described three orifice；Described first interface and described
It is single rotor pattern during two orifice.
In certain embodiments, preferably, described comparison step includes：
If presently described operation mode is birotor pattern, judging whether F >=F1 meets, if meeting, keeping current
Birotor pattern；If being unsatisfactory for, it is replaced by single rotor pattern；F1 is birotor mode frequency threshold value；
If presently described operation mode is single rotor pattern, judging whether F≤F2 meets, if meeting, keeping current
Single rotor pattern；If being unsatisfactory for, it is replaced by birotor pattern；F2 is single rotor mode frequency threshold value.
(3) beneficial effect
The technical scheme that the present invention provides, because compressor possesses single rotor pattern and birotor pattern, is transported by two kinds
Air injection enthalpy-increasing and the compressor transfiguration technology of compressor is realized in the conversion of rotary-die type, and birotor pattern increases compressor air-discharging amount,
By-passing part aerofluxuss enter in outdoor heat exchanger for defrosting operation again, change very little to indoor heat exchanger conveying hot gas amount, this
Sample not only can ensure defrost effect, and the heating capacity of indoor heat exchanger is also unaffected, and can lift air conditioner heat-production and relax
Adaptive.
Brief description
Fig. 1 is the structural representation of air conditioner defrosting system in one embodiment of the invention；
Fig. 2 is the structural representation of air-conditioning in one embodiment of the invention；
Fig. 3 is the step schematic diagram of air-conditioner defrosting method in one embodiment of the invention；
Fig. 4 is the step schematic diagram of air conditioning control method in one embodiment of the invention.
In figure, 1 compressor；2 four-way change-over valves；3 outdoor heat exchangers；4 indoor heat exchangers；5 flash vaporization components；6 first throttles
Assembly；7 second orifice unions；8 second check valves；9 three-way valve；10 check valves；
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Following instance
For the present invention is described, but it is not limited to the scope of the present invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " first " "
Two " " the 3rd " " the 4th " is the numbering carrying out for clear explanation product component, does not represent any essential distinction." installation ",
" being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly connect
Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
During air-conditioning heating, need outdoor heat exchanger is defrosted, based on existing defrosting operation to indoor temperature
Affect huge problem, present technology provides air conditioner defrosting system, air-conditioner defrosting method, air-conditioning and air conditioning control method.
By basic engineering, extension design and alternative design, product, method etc. will be described in detail below.
A kind of air conditioner defrosting system, for air-conditioner defrosting.As shown in figure 1, it is mainly by the compression of variable capacity Gas-supplying enthalpy-increasing
Machine 1, outdoor heat exchanger 3 and indoor heat exchanger 4 form.The compressor 1 of variable capacity Gas-supplying enthalpy-increasing employs air injection enthalpy-increasing and compression
Machine 1 transfiguration technology, when compressor 1 is in birotor pattern, this technology plays a role, and improves jet amount.For this reason, compressor 1 is joined
There is single birotor mode switching valve, for changing between compressor 1 single rotor pattern, birotor pattern.The air vent of compressor 1 divides
Tong Guo pipeline not connect with the hot gas inlet of outdoor heat exchanger 3, the hot gas inlet of indoor heat exchanger 4.By this path, compressor
1 supplies hot compressed gas respectively to outdoor heat exchanger 3, indoor heat exchanger 4 respectively, defrosts for outdoor heat exchanger 3, indoor heat exchanger
4 heat.
It is appreciated that this air conditioner defrosting system be based on existing air-conditioned connection line on the basis of, compressor possesses list
Rotor and birotor, and can switch therebetween, realize switching using single birotor mode switching valve, to reach transfiguration QI invigorating
The effect of increasing enthalpy, compressor 1 and indoor heat exchanger 4, outdoor heat exchanger 3 is set up new gas passage, increases spray by compressor 1
Tolerance, connects outdoor heat exchanger 3 and is defrosted by compressor 1.
More specifically structure design is carried out based on above-mentioned basic engineering, for real-time control compressor 1 and outdoor heat exchanger 3
Between being turned on and off of path, and avoid steam on this path to contact with coolant, cooling, affect gas transmission quality, compressor 1
Air vent and the hot gas inlet of outdoor heat exchanger 3 between pipeline on the list supplied gas to outdoor heat exchanger 3 from compressor 1 is set
To valve 10.When needing defrosting, check valve 10 is opened；When not needing defrosting, check valve 10 is closed.
It should be noted that this technology, for the thinking of the on and off of path, is selected unidirectional in certain embodiments
Valve 10, this area can also be replaced check valve 10 using the technical approach that others irreversibly deliver and be completed one-way conduction or closing,
Other any modified models, replaced type structure, broadly fall into the protection domain of this technology in the case of without departing from above-mentioned Pathway of Creation.
Specific to the mutual conversion of single rotor, birotor pattern, this technology employs single birotor mode switching valve, one
In a little embodiments, it is three-way valve 9, and the first interface (i.e. i interface) of three-way valve 9 is connected with the air vent of compressor 1, and second connects
Mouth (i.e. k interface) is connected with the second air entry of compressor 1, and the 3rd interface (i.e. j interface) is entered with the fluid reservoir first of compressor 1
Liquid mouth n connection connection；It is birotor pattern when second interface (i.e. k interface) connects with the 3rd interface (i.e. j interface)；When second
It is single rotor pattern when interface (i.e. k interface) connects with first interface (i.e. i interface).
Air-conditioning switches between heating, freezing for convenience, is also provided with four-way change-over valve 2, the S interface of four-way change-over valve 2
Connect with fluid reservoir the first inlet n of compressor, E interface is connected with the hot gas inlet of indoor heat exchanger 4, C interface with outdoor
The gas outlet connection of heat exchanger 3, D interface is connected with the air vent of compressor 1.
Just need when outdoor heat exchanger 3 has frosting to defrost, if need defrosting operation, need according to outdoor heat exchanger
3 temperature carries out adaptive control, so, this air conditioner defrosting system also includes：Temperature measurement component and control assembly, temperature measurement component,
Check valve 10, single birotor mode switching valve and four-way change-over valve 2 are all connected with control assembly, and temperature measurement component is installed on outdoor and changes
Hot device 3, to measure the temperature of outdoor heat exchanger 3.Temperature measurement component measures the temperature of outdoor heat exchanger 3, and the temperature that this is measured
Value is sent to controller, and controller carries out defrosting operation according to the control program setting when determining, once needing to defrost, controls
Device then open check valve 10 and the single birotor mode switching valve of adjustment to birotor pattern, the compressor 1 of variable capacity air injection enthalpy-increasing
Hot compressed air point ratio is conveyed to outdoor heat exchanger 3 for defrosting, is conveyed to indoor heat exchanger 4 for heating.
Corresponding air conditioner defrosting system above, in conjunction with Fig. 1, as shown in figure 3, its air-conditioner defrosting method includes：
The compressor 1 of variable capacity Gas-supplying enthalpy-increasing is adjusted to birotor mould by single birotor mode switching valve by step 110
Formula；
When determining needs defrosting operation, need to increase the displacement of compressor 1, improve temperature, it is therefore desirable to by double
Rotor pattern opens variable capacity Gas-supplying enthalpy-increasing compressor 1.
In the winter time it is often necessary to defrosting operation, set up stable connection line, all kinds of control valves are set on the line, respectively
Kind of control valve controls mode of operation and circuit to lead to closed state be preferably product design mode.
Wherein, single birotor mode switching valve is three-way valve 9, the first interface (i.e. i interface) of three-way valve 9 and compressor 1
Air vent connection, second interface (i.e. k interface) connect with the second air entry of compressor 1, the 3rd interface (i.e. j interface) and pressing
Fluid reservoir the first inlet n connection of contracting machine；It is double turning when second interface (i.e. k interface) connects with the 3rd interface (i.e. j interface)
Subpattern；It is single rotor pattern when second interface (i.e. k interface) connects with first interface (i.e. i interface).
Step 120, the air vent of compressor 1 steam with the hot gas inlet of outdoor heat exchanger 3, indoor heat exchanger 4 respectively
Entrance connects；
Compressor 1 is supplied gas with outdoor heat exchanger 3, indoor heat exchanger 4, keeps plenum duct in the conduction state.
Although be frequently necessary to defrost, defrost for discontinuity operation, do not possess seriality, do not need defrost when
Wait, compressor 1 need not convey heat to outdoor heat exchanger 3, and, compressor 1 can also be adjusted to single rotor pattern, so,
Arrange from compressor 1 to outdoor heat exchanger 3 on pipeline between the hot gas inlet of the air vent of compressor 1 and outdoor heat exchanger 3
The check valve 10 supplied gas；In this step, check valve 10 is opened, and passage is conducting state.When not needing defrosting, check valve 10
Close, passage is closed mode.
It should be noted that electronization controls for convenience, this check valve 10 can be Unidirectional solenoid valve.
Step 130, is in the compressor 1 holding under change Gas-supplying enthalpy-increasing and changes hot compressed gas by preset ratio respectively to interior
Hot device 4 conveying is for heating, to outdoor heat exchanger 3 conveying for defrosting.
The ratio of supplying gas can as the case may be depending on, do not need when outdoor heat exchanger 3 is defrosted to inhale from indoor heat exchanger 4
Receive heat it is not required that indoor heat exchanger 4 is transferred to refrigeration mode, so, the conveying heat of indoor heat exchanger 4 keeps flat substantially
Weighing apparatus, the indoor temperature difference changes very little, and outdoor heat exchanger 3 is defrosted by the heat that compressor 1 conveys.
Step 110-130 gives specific defrosting operating process, after above-mentioned defrosting, can increase：Step
140, judge whether to terminate defrosting operation, determination methods at least can be adopted with the following method：
Method one, continues the temperature change of tracking measurement outdoor heat exchanger 3, judges whether that stopping removes according to subsequent temperature values
Frost；
Method two, the operation duration of the conventional defrosting of statistics, as routine, operation duration is judged that duration determines whether to stop
Defrosting；
Method three, the temperature of defrosting duration and outdoor heat exchanger 3 is combined, and judges whether to stop defrosting.
Next step 140 will taking method two be as a example decomposed into by the present embodiment：
Step 1400, determines duration threshold value T0；
The power of duration threshold value and compressor 1, volume of compressor 1 etc. have important relationship, and power big duration threshold value is short, body
Long-pending big, duration threshold value is long.Duration threshold value can determine it is also possible to when collecting each defrosting after test of many times based on experience value
Long, determine duration threshold value.Such as：T0 is 30～90 seconds.
Step 1410, conveys hot compressed gas timing to compressor 1 to outdoor heat exchanger 3, obtains gas transmission duration；
Under normal circumstances, within a certain period of time, the temperature of outdoor heat exchanger 3 can reach certain value, but, once tying
White phenomenon, the temperature value in certain time can occur more significantly to change.
Step 1420, gas transmission duration is compared with duration threshold value, determines whether to terminate defrosting according to comparative result.
It is specially：When gas transmission duration is more than T0, check valve 10 is closed, and defrosting terminates；Conversely, continuing defrosting.
Step 110-130 gives the concrete operation step of defrosting, and step 140 is given and judges the side whether terminating of defrosting
Method, next provides step 100, judges whether to need to defrost, if defrosting, carries out step 110.Judge whether to need the energy that defrosts
Enough integrity supplementing defrosting operation further, more conducively practical operation.
Step 100 is a complex judge process, and it can be decomposed into following steps：Air-conditioner defrosting method also wraps
Include：
Step 1000, detects and records outdoor heat exchanger 3 first temperature in the first setting time section from after compressor 1 startup
Degree scope T1min～T1max；
Start from compressor 1 and start timing, can more accurately obtain the influence degree to compressor 1 for the frosting, wherein temperature is
More obvious influence factor.
First setting time section is preferably 8-12 minute.
Step 1010, detects and records the outdoor heat exchanger 3 second of the second setting time moment point from after compressor 1 startup
Temperature T2；Second setting time moment point is later than any instant point in the first setting time section；
After compressor 1 operating certain time, the impact effect of frosting can be more obvious.Second setting time moment point is preferred
For any value in 20 minutes -50 minutes, such as 30 minutes, the first second setting time moment point will be later than the first setting time
Any instant point of section, secondly, the second setting time moment point is put 5 minutes preferably on the basis of 30 minutes in front and back, i.e. 25-35
Minute.
Step 1020, the first temperature range and second temperature are compared, if meeting pre-conditioned, it is adjusted walking
Suddenly, if being unsatisfactory for, carry out the heating operation of room air regulation and control.
Pre-conditioned it is：T1min- T2≤T30SUBT3ONE, T30SUBT3ONE are 5 DEG C～-11 DEG C.
In addition, this technology is in order to more comprehensively carry out product protection, above-mentioned air conditioner defrosting system is integrated into air-conditioning and produces
In product, integrated after air-conditioning possess defrosting effect.It is mainly by above-mentioned air conditioner defrosting system and daily room air regulation and control system
System composition.
Daily room air regulator control system is referred to prior art to carry out building composition.
A kind of system composition of room air regulator control system is given below, as shown in Fig. 2 its mainly by flash vaporization components 5, the
Compressor 1 in one orifice union 6, the second orifice union 7, above-mentioned air conditioner defrosting system, indoor heat exchanger 4, outdoor heat exchanger 3
Composition.The air inlet b of the air supply tank of compressor 1 of the variable capacity Gas-supplying enthalpy-increasing of air conditioner defrosting system and giving vent to anger of flash vaporization components 5
Mouth connection, the outlet of flash vaporization components 5 is sequentially communicated the second orifice union 7, the entrance of outdoor heat exchanger 3；The import of flash vaporization components 5
It is sequentially communicated first throttle assembly 6, indoor heat exchanger 4.
When domestic air conditioning heats, outdoor heat exchanger 3 coolant is pressurizeed by compressor 1, becomes high temperature and high pressure gas, gets in
Heat exchanger 4 (now for condenser), condensation liquefaction heat release, becoming as liquid, room air being heated, thus reach carrying simultaneously
The final purpose of high indoor temperature.And liquid coolant reduces pressure through throttling arrangement, enter outdoor heat exchanger 3 (now for vaporizer),
Evaporation gasification heat absorption, becomes gas, draws the heat (outdoor air becomes colder) of outdoor air simultaneously, become the coolant of gas
It is again introduced into compressor 1 and start next circulation.Based on an above process it is achieved that the heating of air-conditioning.
In order to build the one-way flow of air-flow, on the passage between the air inlet b of air supply tank and the gas outlet of flash vaporization components 5
The second check valve 8 supplied gas from flash vaporization components 5 to air supply tank is set.
Next, being described in detail to the control method of above-mentioned air-conditioning：
Air conditioning control method, as shown in figure 4, it includes：
Step 210, starts the compressor of variable capacity Gas-supplying enthalpy-increasing；
Step 220, detects and records outdoor heat exchanger first temperature in the first setting time section from after compressor start
Scope T1min～T1max；
Start timing from compressor start, can more accurately obtain the influence degree to compressor for the frosting, wherein temperature is relatively
For obvious influence factor.First setting time section is preferably 8-12 minute.
Step 230, detects and records outdoor heat exchanger second temperature of the second setting time moment point from after compressor start
Degree T2；Second setting time moment point is later than any instant point in the first setting time section；
After compressor operation certain time, the impact effect of frosting can be more obvious.Second setting time moment point is preferred
For any value in 20-50 minute, the first second setting time moment point to be later than in the first setting time section arbitrary when
Punctum, secondly, the second setting time moment point is put 5 minutes preferably on the basis of 30 minutes in front and back, i.e. 25-35 minute.
Step 240, the first temperature range and second temperature are compared, if meeting pre-conditioned, carry out air-conditioning and remove
Frost operation, if being unsatisfactory for, carries out the heating operation of room air regulation and control.
Pre-conditioned it is：T1min- T2≤T30SUBT3ONE, T30SUBT3ONE are 5 DEG C～-11 DEG C.
Wherein air-conditioner defrosting operation may refer to air-conditioner defrosting method above, and here is omitted.
Although step 210-240 has a lot of similarities with the step 100 in air-conditioner defrosting method, because, subject matter
Difference, step 210-240 or step 100 are provided to theme is more fully protected.
Wherein, after due to defrosting, or after start, compressor is in birotor pattern, only needs due to when normal indoor heats
Want single rotor pattern, it is therefore desirable to adjust the operation mode of compressor in time.The heating operation of room conditioning regulation and control includes as follows
Compressor operation mode decision and adjustment, specially：
Step 2510, running frequency F of detection compressor and current operating mode, operation mode is single rotor pattern or double
Rotor pattern；
Detection compressor current operating mode method be：
Obtain the Interface status of single birotor mode switching valve in compressor；
Determine operation mode according to Interface status；
Single birotor mode switching valve is three-way valve, the first interface (i.e. i interface) of three-way valve and the air vent of compressor
Connection, second interface (i.e. k interface) is connected with the second air entry of compressor, the storage of the 3rd interface (i.e. j interface) and compressor
Flow container the first inlet n connects；It is birotor pattern when second interface (i.e. k interface) connects with the 3rd interface (i.e. j interface)；The
It is single rotor pattern when one interface (i.e. i interface) connects with second interface (i.e. k interface).
Step 2520, running frequency F is compared with current operating mode respective frequencies threshold value, true according to comparative result
Surely the pattern that keeps on the go or replacing operation mode.
It should be noted that because operation mode includes single rotor pattern and birotor pattern, different operation modes
Frequency threshold and differ, need to be compared with current operating mode when relatively.
Relevant current operating mode, can be to be realized using at least two modes：
Mode one, comparison module can correspond to, according to current operating mode, the frequency threshold reading current operating mode, and
Compare；
Mode two, the frequency threshold being used for comparing individually is defined as an independent concept, and the assignment of this concept is with working as
Year operation mode and become, when for single rotor pattern, or when being adjusted to single rotor pattern, frequency threshold is entered as single rotor pattern
Frequency threshold；When for birotor pattern, or when being adjusted to birotor pattern, frequency threshold is entered as birotor mode frequency threshold
Value.Comparison module directly reads the assignment under this frequency threshold concept when relatively.
Next, giving mode one, step 2520 to be described, it includes：
If current operating mode is birotor pattern, judging whether F >=F1 meets, if meeting, keeping currently double turns
Subpattern；If being unsatisfactory for, it is replaced by single rotor pattern；F1 is birotor mode frequency threshold value；
If current operating mode is single rotor pattern, judging whether F≤F2 meets, if meeting, keeping currently single turn
Subpattern；If being unsatisfactory for, it is replaced by birotor pattern；F2 is single rotor mode frequency threshold value.
Those skilled in the art can in a jointed manner one operational approach, adaptation is carried out to mode two, that is, changes
The assignment of frequency threshold concept.
Switch air conditioning system birotor mode operation or single rotor mode operation according to frequency threshold F1, F2, effectively solve
Certainly the low problem of common twin-tub frequency-changeable compressor low frequency efficiency, realizes medium and low frequency energy-saving run, system overall operation is substantially improved
Efficiency.
By the specific descriptions of above-mentioned technology it can be deduced that this technology introduces air injection enthalpy-increasing and compressor transfiguration technology,
While increasing compressor air-discharging amount, then by-passing part aerofluxuss enter in outdoor heat exchanger for defrosting operation, so not only may be used
To ensure defrost effect, the heating capacity of indoor heat exchanger is also unaffected, and can lift air conditioner heat-production comfortableness.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (22)
1. a kind of air conditioner defrosting system is it is characterised in that include：The compressor (1) of variable capacity Gas-supplying enthalpy-increasing, outdoor heat exchanger
(3) and indoor heat exchanger (4), described compressor (1) is furnished with single birotor mode switching valve, in single rotor pattern with double turn
The operation mode of described compressor is changed, the air vent of described compressor (1) passes through pipeline and described outdoor respectively between subpattern
The hot gas inlet of heat exchanger (3), the hot gas inlet connection of described indoor heat exchanger (4), the described compression under birotor pattern
Machine send steam to described outdoor heat exchanger, described indoor heat exchanger.
2. air conditioner defrosting system as claimed in claim 1 is it is characterised in that the air vent of described compressor (1) and described room
Arrange on pipeline between the hot gas inlet of external heat exchanger (3) and to supply gas to described outdoor heat exchanger (3) from described compressor (1)
Check valve (10).
3. air conditioner defrosting system as claimed in claim 2 is it is characterised in that described single birotor mode switching valve is three-way valve
(9), the first interface of described three-way valve (9) is connected with the air vent of described compressor (1), second interface and described compressor
(1) the second air entry connection, the 3rd interface is connected with fluid reservoir first inlet of described compressor (1)；
It is birotor pattern when described second interface and described three orifice；
It is single rotor pattern when described second interface connects with described first interface.
4. it is characterised in that also including four-way change-over valve (2), described four-way changes air conditioner defrosting system as claimed in claim 3
Connect to the S interface of valve (2) and fluid reservoir first inlet of described compressor, the heat of E interface and described indoor heat exchanger (4)
Gas entrance connects, and C interface is connected with the gas outlet of described outdoor heat exchanger (3), the air vent of D interface and described compressor (1)
Connection.
5. air conditioner defrosting system as claimed in claim 4 is it is characterised in that also include：Temperature measurement component and control assembly, described
Temperature measurement component is installed on described outdoor heat exchanger (3), to measure the temperature of described outdoor heat exchanger (3)；Described temperature measurement component, institute
State check valve (10), described single birotor mode switching valve and described four-way change-over valve (2) to be all connected with described control assembly.
6. a kind of air-conditioning is it is characterised in that include：Air-conditioning described in room air regulator control system and any one of claim 1-5
Except defrosting system.
7. air-conditioning as claimed in claim 6 is it is characterised in that described room air regulator control system includes：Flash vaporization components (5),
First throttle assembly (6), the second orifice union (7), outdoor heat exchanger, indoor heat exchanger and described air conditioner defrosting system can
The compressor (1) of transfiguration Gas-supplying enthalpy-increasing；The air supply tank of compressor (1) of the variable capacity Gas-supplying enthalpy-increasing of described air conditioner defrosting system
Air inlet b is connected with the gas outlet of described flash vaporization components (5), and the outlet of described flash vaporization components (5) is sequentially communicated described second section
Stream assembly (7), outdoor heat exchanger (3)；The import of described flash vaporization components (5) is sequentially communicated described first throttle assembly (6), interior
Heat exchanger (4).
8. air-conditioning as claimed in claim 7 is it is characterised in that the air inlet b of described air supply tank and described flash vaporization components (5)
The second check valve (8) supplied gas to described air supply tank from flash vaporization components (5) is arranged on the passage between gas outlet.
9. a kind of air-conditioner defrosting method is it is characterised in that include：
The compressor of variable capacity Gas-supplying enthalpy-increasing is adjusted to birotor pattern by single birotor mode switching valve by set-up procedure；
Connection step, the air vent of described compressor is entered with the hot gas inlet of outdoor heat exchanger, the steam of indoor heat exchanger respectively
Mouth connection；
Gas transmission step, be in hold become Gas-supplying enthalpy-increasing under described compressor by hot compressed gas by preset ratio respectively to described room
Interior heat exchanger conveying is for heating, to the conveying of described outdoor heat exchanger for defrosting.
10. air-conditioner defrosting method as claimed in claim 9 is it is characterised in that described single birotor mode switching valve is threeway
Valve, the first interface of described three-way valve is connected with the air vent of described compressor, and second interface is inhaled with the second of described compressor
QI KOU connects, and the 3rd interface is connected with fluid reservoir first inlet of described compressor；
It is birotor pattern when described second interface and described three orifice；
It is single rotor pattern when described second interface connects with described first interface.
11. air-conditioner defrosting methods as claimed in claim 9 are it is characterised in that the air vent of described compressor and described outdoor
The check valve supplied gas to described outdoor heat exchanger from described compressor is arranged on the pipeline between the hot gas inlet of heat exchanger；Institute
State in connection step, described check valve is opened.
12. air-conditioner defrosting methods as claimed in claim 11 are it is characterised in that described gas transmission step also includes：
To described outdoor heat exchanger conveying hot compressed gas, timing is carried out to described compressor, obtains gas transmission duration；
When described gas transmission duration is more than T0, described closed check valve, defrosting terminates.
13. air-conditioner defrosting methods as claimed in claim 12 are it is characterised in that described T0 is 30～90 seconds.
14. air-conditioner defrosting methods as described in any one of claim 9-13 it is characterised in that before described set-up procedure,
Described air-conditioner defrosting method also includes：
Detect and record outdoor heat exchanger first temperature range T1 in the first setting time section from after compressor startmin~
T1max；
Detect and record outdoor heat exchanger second temperature T2 of the second setting time moment point from after compressor start；Second setting
Time moment point is later than any instant point in described first setting time section；
Described first temperature range and described second temperature are compared, if meeting pre-conditioned, carry out described adjustment step
Suddenly, if being unsatisfactory for, carry out the heating operation of room air regulation and control.
15. air-conditioner defrosting methods as claimed in claim 14 are it is characterised in that described pre-conditioned be：T1min-T2≤
T30SUBT3ONE.
16. air-conditioner defrosting methods as claimed in claim 15 are it is characterised in that described T30SUBT3ONE is 5 DEG C～-11 DEG C；
And/or, described first setting time section is 8-12 minute；And/or, described second setting time moment point is in 20-50 minute
Any value.
A kind of 17. air conditioning control methods it is characterised in that
Start the compressor of variable capacity Gas-supplying enthalpy-increasing；
Detect and record outdoor heat exchanger first temperature range T1 in the first setting time section from after described compressor startmin
～T1max；
Detect and record outdoor heat exchanger second temperature T2 of the second setting time moment point from after compressor start, the second setting
Time moment point is later than the moment point in described first setting time section；
Described first temperature range and described second temperature are compared, if meeting pre-conditioned, carrying out described right will
Seeking the air-conditioner defrosting method described in any one of 9-16, if being unsatisfactory for, carrying out the heating operation of room air regulation and control.
18. air conditioning control methods as claimed in claim 17 are it is characterised in that described pre-conditioned be：T1min-T2≤
T30SUBT3ONE.
19. air conditioning control methods as claimed in claim 18 are it is characterised in that described T30SUBT3ONE is 5 DEG C～-11 DEG C；
And/or, described first setting time section is 8-12 minute；And/or, described second setting time moment point be 20 minutes -50 points
Any value in clock.
20. air conditioning control methods as described in any one of claim 17-19 are it is characterised in that described room conditioning regulation and control
Heating operation includes：
Detecting step, detects running frequency F and the current operating mode of described compressor, and described operation mode is single rotor pattern
Or birotor pattern；
Comparison step, described running frequency F is compared with current operating mode respective frequencies threshold value, true according to comparative result
Surely maintain described operation mode or change described operation mode.
21. air conditioning control methods as claimed in claim 20 are it is characterised in that detect described compressor current operating mode
Method is：
Obtain the Interface status of single birotor mode switching valve in compressor；
Determine described operation mode according to described Interface status；
Described single birotor mode switching valve is three-way valve, and the first interface of described three-way valve is connected with the air vent of described compressor
Logical, second interface is connected with the second air entry of described compressor, fluid reservoir first feed liquor of the 3rd interface and described compressor
Mouth connection；It is birotor pattern when described second interface and described three orifice；Described first interface and described second connects
It is single rotor pattern during mouth connection.
22. air conditioning control methods as claimed in claim 20 are it is characterised in that described comparison step includes：
If presently described operation mode is birotor pattern, judging whether F >=F1 meets, if meeting, keeping currently double turns
Subpattern；If being unsatisfactory for, it is replaced by single rotor pattern；F1 is birotor mode frequency threshold value；
If presently described operation mode is single rotor pattern, judging whether F≤F2 meets, if meeting, keeping currently single turn
Subpattern；If being unsatisfactory for, it is replaced by birotor pattern；F2 is single rotor mode frequency threshold value.
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| CN108692484A (en) * | 2018-07-09 | 2018-10-23 | 中国科学院广州能源研究所 | The low-temperature air energy heat pump unit to defrost using flash vessel tonifying Qi circuit |
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| CN110736207A (en) * | 2019-09-26 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110940056A (en) * | 2019-10-28 | 2020-03-31 | 宁波奥克斯电气股份有限公司 | Air conditioner capable of defrosting without stopping machine and control method thereof |
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