CN110410857A - A kind of air conditioner and its defrosting control method - Google Patents
A kind of air conditioner and its defrosting control method Download PDFInfo
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- CN110410857A CN110410857A CN201910529469.7A CN201910529469A CN110410857A CN 110410857 A CN110410857 A CN 110410857A CN 201910529469 A CN201910529469 A CN 201910529469A CN 110410857 A CN110410857 A CN 110410857A
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- air conditioner
- valve
- port valve
- heat exchanger
- defrost
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Classifications
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- 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
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
- F24F1/0093—Indoor units, e.g. fan coil units characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
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- 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
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- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
Abstract
The present invention provides a kind of air conditioner and its defrosting control methods, air conditioner includes interior machine heat exchanger, inner blower, interior electromechanical heater, outer machine heat exchanger, outer blower, compressor, valve, temperature-sensitive system, it further include defrost heat exchanger and multiple two-port valves, pass through the operating status of heater and defrost heat exchanger electromechanical in the switch state of the multiple two-port valves of control, control, the continuous blowing hot-air of air conditioner under defrost pattern can be achieved, improve the comfort of heating.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of air conditioner and its defrosting control method.
Background technique
Currently, domestic air conditioner heating defrost generallys use the outer machine defrosting method of switching refrigeration mode.The method is being changed
During frost, air conditioner is switched to refrigeration cycle (indoor fan 2 is out of service), not only cannot to indoor environment quantity of heat given up,
System absorbs heat from indoor environment by interior machine heat exchanger 1 instead and supplies outer machine defrost, and indoor environment temperature is caused to be declined,
More than each cycle defrost time general last for several minutes, cause indoor environment temperature fluctuation to influence the comfort of heating.And
And in traditional defrost, air conditioner is switched to defrost pattern from heating mode, and air conditioner is equivalent to inside and outside machine and exchanges, be easy to cause
Liquid refrigerant enters compressor, and when compressor compresses liquid, it is easily damaged compressor, causes liquid hammer problem.
Chinese patent CN102466296 discloses a kind of defrosting control method applied to heat pump air conditioner unit, by
Assisted heating device in opening chamber under defrost state realizes continuously heating, but under defrost state, air conditioner still needs
It is switched to refrigeration mode operation from heating mode, needs still indoor environment temperature can be caused to fluctuate from indoor absorption heat.
Summary of the invention
Problems solved by the invention is that conventional air conditioner heating defrost process chamber environment temperature cyclic fluctuation influences to relax
The problem of adaptive.
To solve the above problems, the present invention provides a kind of air conditioner, including interior machine heat exchanger, inner blower, interior electromechanical heating
Device, outer machine heat exchanger, outer blower, compressor, valve, temperature-sensitive system further include defrost heat exchanger and multiple two-port valves, pass through control
The switch state of multiple two-port valves controls the operating status of interior electromechanical heater and defrost heat exchanger, it can be achieved that under defrost pattern
The continuous blowing hot-air of air conditioner.
Further, the interior machine heat exchanger is connected with the first two-port valve；The outer machine heat exchanger passes through third two-port valve
It is connected to one end of valve；The outer machine heat exchanger is connected to by the 4th two-port valve with the valve other end.
Further, the defrost heat exchanger is connected with the second two-port valve.
Further, first two-port valve, third two-port valve are normally open valve；Second two-port valve, the 4th two-port valve
For normally close valve.
Further, throttling set is provided on the pipeline between the interior machine heat exchanger and outer machine heat exchanger.
Further, the throttling set is in parallel with the 5th two-port valve.
Further, the 5th two-port valve is normally close valve.
Further, regulating valve is provided on the pipeline that the interior machine heat exchanger is connect with the valve.
Further, the defrost heat exchanger has defrost electric heater.
Further, the temperature-sensitive system includes inner ring temperature sensing device, inner disc temperature sensing device, outer ring temperature sensing device and external disk
Temperature sensing device.
The present invention also provides a kind of defrosting control method of air conditioner, it can be achieved that continuous blowing hot-air under defrost pattern, tool
Body the following steps are included:
Step S1, air conditioner are run with normal heating mode；
Step S2, when controller of air conditioner detects that system meets defrost pattern entry condition: electromechanical heating in starting
Device continues to interior electromechanical heater and continues to run；
Step S3, the close compressor after time t1 open the second two-port valve, the 4th two-port valve, close the first two-way
Valve, third two-port valve, valve 8 maintain normal heating mode state, and inner blower maintains normal heating mode state, close outer blower；
Step S4 starts defrost electric heater, compressor, into defrost pattern after time t2；
It further, further include defrost pattern exit step: when controller of air conditioner detects that system meets defrost pattern
When exit criteria: stopping compressor, defrost electric heater, closing the second two-port valve, the 4th two-port valve, the first two-port valve of opening,
Third two-port valve, valve maintain normal heating mode state, and inner blower maintains normal heating mode state, and outer blower maintains to stop shape
State；
Further, further include that interior electromechanical heater stops step: after time t3, starting outer blower, compressor, it is interior
Disk temperature sensing device, inner ring temperature sensing device detect in satisfaction after electromechanical heater stop condition that interior electromechanics heater is out of service,
Air conditioner restores normal heating mode operating status.
Further, step S3 can also include opening the 5th two-port valve, adjust valve regulation to suitable aperture.
Further, step S5 can also include closing the 5th two-port valve.
Beneficial technical effect: the controller of air conditioner switches air conditioner by the switch state of the multiple two-port valves of control
The circulation path of internal refrigeration storage agent, while cooperating the control of interior electromechanical heater, defrost heat exchanger, it can be achieved that air conditioner defrost mould
In formula, air conditioner absorbs heat by defrost heat exchanger and supplies outer machine defrost, at the same in starting electromechanical heater to indoor heating, from
And realize that air conditioner defrost pattern operational process continuously goes out hot wind (except shutting down to temperature spot), avoid conventional air conditioner heating
Defrost process chamber environment temperature cyclic fluctuation influences the problem of comfort；And effectively prevent compressor during defrost
Liquid hammer problem.
Detailed description of the invention
Fig. 1 is the system diagram of embodiment 1；
Fig. 2 is the system diagram that the defrost pattern of embodiment 1 simplifies；
Fig. 3 is the system diagram of embodiment 2；
Fig. 4 is the system diagram that the defrost pattern of embodiment 2 simplifies；
Description of symbols:
Machine heat exchanger in 1-, 2- inner blower, electromechanical heater, the outer machine heat exchanger of 4-, the outer blower of 5-, 6- throttling dress in 3-
It sets, 7- compressor, 8- valve, 9- temperature-sensitive system, 10- defrost heat exchanger, the first two-port valve of 11-, the second two-port valve of 12-, 13- third
Two-port valve, the 4th two-port valve of 14-, the 5th two-port valve of 15-, 16- regulating valve, 91- inner ring temperature sensing device, 92- inner disc temperature sensing device,
93- outer ring temperature sensing device, 94- external disk temperature sensing device, 95- defrosting temperature-sensing apparatus.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Embodiment 1
Referring to attached drawing 1-2, a kind of air conditioner is including interior machine heat exchanger 1, interior, it can be achieved that continuous blowing hot-air under defrost pattern
Blower 2, interior electromechanical heater 3, outer machine heat exchanger 4, outer blower 5, throttling set 6, compressor 7, valve 8, temperature-sensitive system 9, are also wrapped
Defrost heat exchanger 10 and four two-port valves are included, by controlling the switch state of four two-port valves, controls interior electromechanical heater and change
The operating status of white heat exchanger is, it can be achieved that the continuous blowing hot-air of air conditioner under defrost pattern.
Interior machine heat exchanger 1 is connected with the first two-port valve 11；The outer machine heat exchanger 4 passes through third two-port valve 13 and valve 8
One end connection；The defrost heat exchanger 10 is connected with the second two-port valve 12；The outer machine heat exchanger 4 by the 4th two-port valve 14 with
The connection of 8 other end of valve.
Wherein the first two-port valve 11, third two-port valve 13 are normally open valve, if that is, the first two-port valve 11, third two-port valve 13 are not
Energization is then kept open, and is switched to closed state if being powered；Second two-port valve 12, the 4th two-port valve 14 are normally close valve,
I.e. the second two-port valve 12, the 4th two-port valve 14 remain off if no power, if being powered is switched to opening state.
Throttling set is provided on pipeline between interior machine heat exchanger 1 and outer machine heat exchanger 4.
Defrost electric heater is had on defrost heat exchanger 10.
Temperature-sensitive system 9 includes inner ring temperature sensing device 91, inner disc temperature sensing device 92, outer ring temperature sensing device 93, external disk temperature-sensitive dress
94 are set, further includes defrosting temperature-sensing apparatus 95, defrost electric heater temperature when defrosting temperature-sensing apparatus 95 is to monitor defrost.
There are three types of modes when above-mentioned air conditioner is run:
(1) refrigeration mode
When refrigerating operaton, the first two-port valve 11, third two-port valve 13 are opened, and the second two-port valve 12, the 4th two-port valve 14 close
It closes, AD, BC of valve 8 are respectively communicated with, refrigerant path BC through valve 8 after interior 1 interior suction thermal evaporation of machine heat exchanger, by compressor 7
Air entry E enters compressor 7, is discharged after compression from 7 exhaust outlet F of compressor, and the path AD through valve 8 enters outer machine heat exchanger 4 and puts
After thermal coagulation, interior machine heat exchanger 1 is returned to after the throttling of throttling set 6.Electromechanical heater 3, defrost electric heater close at this time
It closes.
(2) normal heating mode (heating not defrost)
When normal heating mode operation (heating not defrost), the first two-port valve 11, third two-port valve 13 are opened, the second two-way
Valve 12, the 4th two-port valve 14 are closed, and AB, DC of valve 8 are respectively communicated with, and refrigerant is after outer 4 interior suction thermal evaporation of machine heat exchanger through valve 8
The path DC, compressor 7 is entered by air entry E, after compression from 7 exhaust outlet F of compressor be discharged, the path AB through valve 8 it is laggard
After entering interior 1 heat release of machine heat exchanger condensation, outer machine heat exchanger 4 is returned to after the throttling of throttling set 6.Electromechanical heater 3 at this time
It is opened and closed according to actual demand.
(3) defrost pattern
A kind of defrosting control method of air conditioner, it can be achieved that continuous blowing hot-air under defrost pattern,
Step S1, air conditioner are run with normal heating mode, and normal heating mode refers to air conditioner heat-production not defrost；
Step S2, when controller of air conditioner detects that system meets defrost pattern entry condition: electromechanical heating in starting
Device 3 continues to the interior electromechanical operation of heater 3, and defrost pattern entry condition may be set according to actual conditions, such as when outside T
Disk≤T1, and T outer ring-T external disk≤Δ T, and compressor 7 continuous operating time ty when, judgement meet defrost entry condition, need
To enter defrost pattern.
Step S3, the close compressor 7 after time t1 (t1=0s if interior electromechanical heater 3 originally operation), is opened
Second two-port valve 12, the 4th two-port valve 14, close the first two-port valve 11, third two-port valve 13, and valve 8 maintains normal heating mode shape
State (AB, DC of valve 8 are respectively communicated with), inner blower 2 maintain normal heating mode state, outside the Pass blower 5.
Step S4 starts defrost electric heater, compressor 7, into defrost pattern, refrigerant is being changed after time t2
The path DC through valve 8 after white 10 interior suction thermal evaporation of heat exchanger enters compressor 7 by 7 air entry E of compressor, from compression after compression
7 exhaust outlet F of machine discharge, after the path AB of valve 8 enters outer 4 heat release of machine heat exchanger condensation, the returning to after the throttling of throttling set 6
White heat exchanger 10.The system diagram that defrost pattern simplifies is shown in attached drawing 2 (arrow shows refrigerant flow direction).
Step S5, when controller of air conditioner detects that system meets defrost pattern exit criteria: stopping compressor 7, change
White electric heater closes the second two-port valve 12, the 4th two-port valve 14, opens the first two-port valve 11, third two-port valve 13, and valve 8 is tieed up
It holds normal heating mode state (AB, DC of valve 8 are respectively communicated with), inner blower 2 maintains normal heating mode state, and outer blower 5 is tieed up
Hold halted state.
Defrost pattern exit criteria may be set according to actual conditions, such as compress as T external disk >=T2, and under defrost pattern
Machine 7 continuous operating time th when, judgement meets defrost and offers, and needs to exit defrost pattern.
Step S6 starts outer blower 5, compressor 7, inner disc temperature sensing device 92, inner ring temperature sensing device 91 after time t3
Detect 3 stop condition of electromechanical heater in satisfaction, interior electromechanics heater 3 is out of service, and air conditioner restores normal heating mode
Operating status.
Embodiment 2
Referring to attached drawing 3-4, a kind of air conditioner is including interior machine heat exchanger 1, interior, it can be achieved that continuous blowing hot-air under heating mode
Blower 2, interior electromechanical heater 3, outer machine heat exchanger 4, outer blower 5, throttling set 6, compressor 7, valve 8, temperature-sensitive system 9, are also wrapped
10, five two-port valves of defrost heat exchanger are included, by controlling the switch state of five two-port valves, control interior electromechanical heater and defrost
The operating status of heat exchanger is, it can be achieved that the continuous blowing hot-air of air conditioner under defrost pattern.
Interior machine heat exchanger 1 is connected with the first two-port valve 11；The outer machine heat exchanger 4 passes through third two-port valve 13 and valve 8
One end connection；The defrost heat exchanger 10 is connected with the second two-port valve 12；The outer machine heat exchanger 4 by the 4th two-port valve 14 with
The connection of 8 other end of valve.
Throttling set 6, the throttling set 6 are provided on pipeline between the interior machine heat exchanger 1 and outer machine heat exchanger 4
It is in parallel with the 5th two-port valve 15.
Regulating valve 16 is provided on the pipeline that interior machine heat exchanger 1 is connect with valve 8.
Wherein the first two-port valve 11, third two-port valve 13 are normally open valve, if that is, the first two-port valve 11, third two-port valve 13 are not
Energization is then kept open, and is switched to closed state if being powered；Second two-port valve 12, the 4th two-port valve 14, the 5th two-way
Valve 15 is normally close valve, i.e. the second two-port valve 12, the 4th two-port valve 14, the 5th two-port valve 15 remains off if no power,
Opening state is switched to if being powered；16 default conditions standard-sized sheet of regulating valve, aperture is adjustable, and the effect of regulating valve is adjusted in inflow
The refrigerant flow size of machine heat exchanger and outer machine heat exchanger, so that air conditioner be made to keep interior mechanism heat, the state of outer machine defrost.
Defrost heat exchanger 10 has defrost electric heater.
Temperature-sensitive system 9 includes inner ring temperature sensing device 91, inner disc temperature sensing device 92, outer ring temperature sensing device 93, external disk temperature-sensitive dress
94 are set, further includes defrosting temperature-sensing apparatus 95, defrost electric heater temperature when defrosting temperature-sensing apparatus 95 is to monitor defrost.
There are three types of modes when above-mentioned air conditioner is run:
(1) refrigeration mode
When air conditioner is with refrigerating operaton, the first two-port valve 11, third two-port valve 13 are opened, the second two-port valve the 12, the 4th 2
Port valve 14, the 5th two-port valve 15 are closed, and 16 standard-sized sheet of regulating valve, AD, BC of valve 8 is respectively communicated with, and refrigerant is in interior machine heat exchanger 1
The path BC through valve 8 after heat absorption evaporation, enters compressor 7 by 7 air entry E of compressor, arranges after compression from 7 exhaust outlet F of compressor
Out, after the path AD of valve 8 enters outer 4 heat release of machine heat exchanger condensation, interior machine heat exchanger 1 is returned to after the throttling of throttling set 6.This
When interior electromechanical heater 3, defrost electric heater be turned off.
(2) normal heating mode (heating not defrost)
When air conditioner is run with normal heating mode, the first two-port valve 11, third two-port valve 13 are opened, the second two-port valve
12, two-port valve, the 5th two-port valve 15 are closed, and 16 standard-sized sheet of regulating valve, AB, DC of valve 8 is respectively communicated with, and refrigerant is in outer machine heat exchanger
Through the path DC of valve 8 after 4 interior suction thermal evaporations, compressor 7 is entered by air entry E, is discharged after compression from 7 exhaust outlet F of compressor, warp
After entering interior 1 heat release of machine heat exchanger condensation after the path AB of valve 8, outer machine heat exchanger 4 is returned to after the throttling of throttling set 6.This
When interior electromechanical heater 3 be opened and closed according to actual needs.
(3) defrost pattern
A kind of defrosting control method of air conditioner, it can be achieved that continuous blowing hot-air under defrost pattern,
Step S1, air conditioner are run with normal heating mode, and normal heating mode refers to air conditioner heat-production not defrost；
Step S2, when controller of air conditioner detects that system meets defrost pattern entry condition: electromechanical heating in starting
Device 3 continues to the interior electromechanical operation of heater 3, and defrost pattern entry condition may be set according to actual conditions, such as when outside T
Disk≤T1, and T outer ring-T external disk≤Δ T, and compressor 7 continuous operating time ty when, judgement meet defrost entry condition, need
To enter defrost pattern.
Step S3, the close compressor 7 after time t1 (t1=0s if interior electromechanical heater 3 originally operation), is opened
Second two-port valve 12, the 4th two-port valve 14, the 5th two-port valve 15 close the first two-port valve 11, third two-port valve 13, regulating valve 16
Suitable aperture is adjusted, valve 8 maintains normal heating mode state (AB, DC of valve 8 are respectively communicated with), and inner blower 2 remains normal
Heating mode state, outside the Pass blower 5.
Step S4 starts defrost electric heater, compressor 7 after time t2, into defrost pattern, air conditioner at this time
Interior machine connect system refrigerant circuit, participate in the heat exchange of refrigerant circulation, refrigerant is after the 10 interior suction thermal evaporation of defrost heat exchanger
The path DC through valve 8 enters compressor 7 by 7 air entry E of compressor, is discharged after compression from 7 exhaust outlet F of compressor, through valve 8
Interior machine heat exchanger 1 and 4 heat release of outer machine heat exchanger condensation are respectively enterd behind the path AB, interior machine, outer machine are in parallel at this time heats simultaneously, interior
Machine is room heat supply, and outer machine carries out defrost, and defrost heat exchanger 10 is equivalent to the heat exchange function for assuming responsibility for the outer machine of original, and refrigerant is last
Defrost heat exchanger 10 is returned to after the throttling of throttling set 6.The system diagram that defrost pattern simplifies is shown in that (arrow shows refrigerant to attached drawing 4
Flow direction).
Step S5, when controller of air conditioner detects that system meets defrost pattern exit criteria: stopping compressor 7, change
White electric heater closes the second two-port valve 12, the 4th two-port valve 14, the 5th two-port valve 15, opens the first two-port valve the 11, the 3rd 2
Port valve 13, valve 8 maintain normal heating mode state (AB, DC of valve 8 are respectively communicated with), and inner blower 2 maintains normal heating mode shape
State, outer blower 5 maintain halted state.
Defrost pattern exit criteria may be set according to actual conditions, such as compress as T external disk >=T2, and under defrost pattern
Machine 7 continuous operating time th when, judgement meets defrost and offers, and needs to exit defrost pattern.
Step S6 starts outer blower 5, compressor 7 after time t3, is filled by inner disc temperature sensing device 92, inner ring temperature-sensitive
It sets 91 to detect whether to meet 3 stop condition of interior electromechanical heater, interior electromechanics heater 3 is out of service, and air conditioner restores normal system
Heat pattern operating status.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (15)
1. a kind of air conditioner, including it is interior machine heat exchanger (1), inner blower (2), interior electromechanical heater (3), outer machine heat exchanger (4), outer
Blower (5), compressor (7), valve (8) and temperature-sensitive system (9), it is characterised in that: further include defrost heat exchanger (10) and multiple two
Port valve controls the operation shape of interior electromechanical heater (3) and defrost heat exchanger (10) by controlling the switch state of multiple two-port valves
State is, it can be achieved that the continuous blowing hot-air of air conditioner under defrost pattern.
2. air conditioner according to claim 1, it is characterised in that: the interior machine heat exchanger (1) and the first two-port valve (11)
Series connection；The outer machine heat exchanger (4) is connected to by third two-port valve (13) with one end of valve (8)；The outer machine heat exchanger (4) is logical
The 4th two-port valve (14) is crossed to be connected to valve (8) other end.
3. air conditioner according to claim 1 or 2, it is characterised in that: the defrost heat exchanger (10) and the second two-port valve
(12) it connects.
4. air conditioner according to claim 3, it is characterised in that: the first two-port valve (11), third two-port valve are normally open valve
(13)；Second two-port valve (12), the 4th two-port valve (14) are normally close valve.
5. air conditioner according to claim 3, it is characterised in that: the interior machine heat exchanger (1) and outer machine heat exchanger (4) it
Between pipeline on be provided with throttling set (6).
6. air conditioner according to claim 5, it is characterised in that: the throttling set (6) and the 5th two-port valve (15) are simultaneously
Connection.
7. air conditioner according to claim 6, it is characterised in that: the 5th two-port valve (15) is normally close valve.
8. air conditioner according to claim 6, it is characterised in that: what the interior machine heat exchanger (1) connect with the valve (8)
Regulating valve (16) are provided on pipeline.
9. air conditioner according to claim 1, it is characterised in that: the defrost heat exchanger (10) has defrost electric heating
Device.
10. air conditioner according to claim 1, it is characterised in that: the temperature-sensitive system (9) includes inner ring temperature sensing device
(91), inner disc temperature sensing device (92), outer ring temperature sensing device (93) and external disk temperature sensing device (94).
11. a kind of defrosting control method of air conditioner, for any air conditioner of claim 1-10, it is characterised in that:
Continuous blowing hot-air under defrost pattern can be achieved, specifically includes the following steps:
Step S1, air conditioner are run with normal heating mode；
Step S2, when controller of air conditioner detects that system meets defrost pattern entry condition: electromechanical heater (3) in starting
Or it continues to interior electromechanical heater (3) and continues to run；
The second two-port valve (12), the 4th two-port valve (14) are opened in step S3, close compressor (7) after time t1, close the
One two-port valve (11), third two-port valve (13), valve (8) maintain normal heating mode state, and inner blower (2) maintains normal heating mould
Formula state closes outer blower (5)；
Step S4 starts defrost electric heater, compressor (7), into defrost pattern after time t2.
12. a kind of defrosting control method of air conditioner according to claim 11, it is characterised in that: further include defrost pattern
Exit step: when controller of air conditioner detects that system meets defrost pattern exit criteria, stop compressor (7), defrost electricity
Heater closes the second two-port valve (12), the 4th two-port valve (14), opens the first two-port valve (11), third two-port valve (13), valve
(8) normal heating mode state is maintained, inner blower (2) maintains normal heating mode state, and outer blower (5) maintains halted state.
13. a kind of defrosting control method of air conditioner according to claim 12, it is characterised in that: further include that interior electromechanics adds
Hot device (3) stops step: after time t3, starting outer blower (5), compressor (7), inner disc temperature sensing device (92), inner ring sense
Warm device (91) detects that in satisfaction after electromechanical heater (3) stop condition, interior electromechanics heater (3) is out of service, air conditioner
Restore normal heating mode operating status.
14. a kind of defrosting control method of air conditioner according to claim 11, it is characterised in that: the step S3 is also wrapped
It includes, opens the 5th two-port valve (15), regulating valve (16), which is adjusted, arrives suitable aperture.
15. a kind of defrosting control method of air conditioner according to claim 14, it is characterised in that: the step S5 is also wrapped
It includes, closes the 5th two-port valve (15).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520818A (en) * | 2020-03-30 | 2020-08-11 | 海信（山东）空调有限公司 | Air conditioner indoor unit, air conditioner defrosting method and air conditioner |
| CN112303818A (en) * | 2020-10-23 | 2021-02-02 | 珠海格力电器股份有限公司 | Defrosting control device and method of air conditioning system and air conditioning system |
| CN112537184A (en) * | 2020-12-25 | 2021-03-23 | 广东积微科技有限公司 | Control method suitable for defrosting and heating of air conditioner of motor home |
| CN114636223A (en) * | 2022-03-21 | 2022-06-17 | 青岛海尔空调器有限总公司 | Defrosting and heating control method, system, equipment and storage medium |
| CN114992818A (en) * | 2022-06-20 | 2022-09-02 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, air conditioner and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111520818A (en) * | 2020-03-30 | 2020-08-11 | 海信（山东）空调有限公司 | Air conditioner indoor unit, air conditioner defrosting method and air conditioner |
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| CN112303818B (en) * | 2020-10-23 | 2021-10-29 | 珠海格力电器股份有限公司 | Defrosting control device and method of air conditioning system and air conditioning system |
| CN112537184A (en) * | 2020-12-25 | 2021-03-23 | 广东积微科技有限公司 | Control method suitable for defrosting and heating of air conditioner of motor home |
| CN114636223A (en) * | 2022-03-21 | 2022-06-17 | 青岛海尔空调器有限总公司 | Defrosting and heating control method, system, equipment and storage medium |
| CN114992818A (en) * | 2022-06-20 | 2022-09-02 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, air conditioner and storage medium |
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Application publication date: 20191105 |