CN109386982A - Air conditioner and its control method - Google Patents
Air conditioner and its control method Download PDFInfo
- Publication number
- CN109386982A CN109386982A CN201811134141.7A CN201811134141A CN109386982A CN 109386982 A CN109386982 A CN 109386982A CN 201811134141 A CN201811134141 A CN 201811134141A CN 109386982 A CN109386982 A CN 109386982A
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- heat exchanger
- control
- bypass line
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010257 thawing Methods 0.000 claims abstract description 42
- 239000003507 refrigerant Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 12
- 238000004781 supercooling Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- 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
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air conditioner and its control method.The air conditioner includes compressor (1), indoor heat exchanger (2), throttling set (3), the first bypass line (4) and outdoor heat exchanger (5), throttling set (3) setting is indoors on the pipeline between heat exchanger (2) and outdoor heat exchanger (5), the first end of first bypass line (4) is connected to outdoor heat exchanger (5), for conveying high temperature refrigerant to outdoor heat exchanger (5), first control valve (6) of control the first bypass line (4) on-off is provided on the first bypass line (4).Air conditioner according to the present invention is able to extend the defrosting cycle of air conditioner, shortens the defrosting time of air conditioner, improves indoor comfort.
Description
Technical field
The invention belongs to air-conditioning technique fields, and in particular to a kind of air conditioner and its control method.
Background technique
For heat pump air conditioner in low-temperature heating, due to the influence of frosting defrosting, it is larger to will cause fluctuations in indoor temperature, comfort
Bad problem.Therefore, multiple means are used, in the prior art to reduce defrosting to influence caused by room temperature.
In the Chinese invention patent application No. is 201210311278.1, a kind of air conditioner is disclosed, by will be indoor
Heat exchanger is divided into two parts (the first indoor heat exchanger, the second indoor heat exchanger), and when outside needs to defrost, four-way valve is changed
To defrosting.High temperature refrigerant first flows through the second indoor heat exchanger after outdoor heat exchanger, is flowing through expansion valve, passes through the first Room
Interior heat exchanger, so that providing heat while defrosting, while to indoor.
Such mode is equivalent to the heat exchange area (indoor) of evaporator when reducing defrosting, due to indoor heat exchanger one
Part acts as condenser, and heat in supply chamber, then the defrosting heat for supplying outdoor heat exchanger will be insufficient, will lead to defrosting time
It is long, it defrosts unclean.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that providing a kind of air conditioner and its control method, it is able to extend sky
The defrosting cycle for adjusting device shortens the defrosting time of air conditioner, improves indoor comfort.
To solve the above-mentioned problems, the present invention provides a kind of air conditioner, including compressor, indoor heat exchanger, throttling set,
First bypass line and outdoor heat exchanger, throttling set are arranged on the pipeline between indoor heat exchanger and outdoor heat exchanger, the
The first end of bypass conduit is connected to outdoor heat exchanger, for conveying high temperature refrigerant, the first bypass line to outdoor heat exchanger
On be provided with control the first bypass line on-off the first control valve.
Preferably, air conditioner further includes gas-liquid separator, and the air return end of compressor is arranged in gas-liquid separator.
Preferably, air conditioner further includes four-way valve, and four interfaces of four-way valve are respectively connected to indoor heat exchanger, outdoor is changed
The exhaust end and air return end of hot device, compressor.
Preferably, outdoor heat exchanger includes multiple rows of heat exchanger tube, and multiple rows of heat exchanger tube includes close to the outer comb of inlet side and remote
Interior comb from inlet side, multiple rows of heat exchanger tube are divided into the pipe group that multiple groups are arranged in parallel, positioned at the interior comb and outlet of same pipe group
Pipe is connected by connecting tube, and the first bypass line is connected to connecting tube.
Preferably, the second end of the first bypass line is connected to the one end of indoor heat exchanger close to throttling set.
Preferably, air conditioner further includes the second bypass line, and the first end of the second bypass line is connected to outdoor heat exchanger,
The second end of second bypass line is connected to the one end of indoor heat exchanger close to throttling set, and control is provided on the second bypass line
Make the second control valve of the second bypass line on-off.
Preferably, the second end of the first bypass line is connected to the one end of indoor heat exchanger far from throttling set.
Preferably, air conditioner further includes the second bypass line, and the first end of the second bypass line is connected to outdoor heat exchanger,
The second end of second bypass line is connected to the one end of indoor heat exchanger far from throttling set, and control is provided on the second bypass line
Make the second control valve of the second bypass line on-off.
Preferably, the first end of the first bypass line is provided with multiple branches, and branch connects one to one with connecting tube.
Preferably, outdoor heat exchanger further includes supercooling tube, and throttling set is connect through supercooling tube with pipe group.
Preferably, the first control valve and the second control valve are solenoid valve, and throttling set is electric expansion valve.
According to another aspect of the present invention, a kind of control method of above-mentioned air conditioner is provided, comprising:
Obtain the current operating conditions of air conditioner；
The first control valve is controlled according to the current operating conditions of air conditioner.
Preferably, the step of obtaining the current operating conditions of air conditioner include:
The operating condition for obtaining air conditioner, when air conditioner is in heating condition,
Obtain outdoor environment temperature TOuter ring；
Obtain coil temperature T among outdoor heat exchangerOuter tube。
Preferably, the step of current operating conditions of air conditioner control the first control valve include:
If detecting TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb,
It controls electric expansion valve and keeps current state；
It controls the first control valve to be connected to and continue the t2 time, then controls the first control valve and disconnect and continue the t3 time, instead
The step is executed again.
Preferably, when air conditioner further includes the second bypass line, the current operating conditions of air conditioner are to the first control valve
The step of being controlled include:
If detecting TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb,
It controls electric expansion valve and keeps current state；
It controls the first control valve and the second control valve while being connected to and continuing the t2 time, then control the first control valve and
Two control valves simultaneously switch off and continue the t3 time, execute the step repeatedly.
Preferably, when air conditioner further includes the second bypass line, the current operating conditions of air conditioner are to the first control valve
The step of being controlled include:
If detecting TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb；
The second control valve is controlled to remain open；
It controls the first control valve to be connected to and continue the t2 time, control electric expansion valve is opened to maximum opening, then controls the
One control valve disconnects and continues the t3 time, and control electric expansion valve is opened to former aperture, executes the step repeatedly.
Preferably, control method further include:
When detecting that air conditioner reaches into defrosting condition, then defrosting control is carried out to air conditioner.
Preferably, the step of obtaining the current operating conditions of air conditioner include:
The operating condition for obtaining air conditioner, when air conditioner is in Defrost operation state；
The step of current operating conditions of air conditioner control the first control valve include:
The connection of the first control valve is controlled, control electronic expansion valve opening is opened to maximum.
Preferably, control method further include:
At the end of defrost, the first control valve of control is disconnected, and control electronic expansion valve opening is opened to initial opening.
Preferably, when air conditioner further includes the second bypass line, the step of obtaining the current operating conditions of air conditioner packet
It includes:
The operating condition for obtaining air conditioner, when air conditioner is in Defrost operation state；
The step of current operating conditions of air conditioner control the first control valve include:
It controls the first control valve and the second control valve while being connected to, control electronic expansion valve opening is opened to minimum.
Preferably, control method further include:
It at the end of defrost, controls the first control valve and the second control valve simultaneously switches off, control electronic expansion valve opening is opened
To initial opening.
Preferably, TaValue range is 0~5 DEG C, TbValue range is -15~0 DEG C, and t1 value range is 0~5min, t2
Value range is 0~30min, and t3 value range is 0~30s.
Air conditioner provided by the invention, including compressor, indoor heat exchanger, throttling set, the first bypass line and outdoor
Heat exchanger, throttling set are arranged on the pipeline between indoor heat exchanger and outdoor heat exchanger, the first end of the first bypass line
It is connected to outdoor heat exchanger, for conveying high temperature refrigerant to outdoor heat exchanger, is provided on the first bypass line by control first
First control valve of siphunculus road on-off.The air conditioner under the low-temperature heating operating condition, can control the by the first control valve
Bypass line road direction outdoor heat exchanger conveys high temperature refrigerant, can upset the frosting condition of outdoor heat exchanger, is guaranteeing normal supply
While hot, extend the period of frosting defrosting, and the time of defrosting can be shortened, promotes the comfort of low-temperature heating.
Detailed description of the invention
Fig. 1 is the structure principle chart of the air conditioner of first embodiment of the invention；
Fig. 2 is the structure principle chart of the air conditioner of second embodiment of the invention；
Fig. 3 is the structure principle chart of the air conditioner of third embodiment of the invention；
Fig. 4 is the structure principle chart of the air conditioner of fourth embodiment of the invention；
Fig. 5 is the control principle drawing of the air conditioner of the embodiment of the present invention；
Fig. 6 is the control method flow chart of the air conditioner of first embodiment of the invention；
Fig. 7 is the control method flow chart of the air conditioner of second embodiment of the invention；
Fig. 8 is the defrosting control flow chart of the air conditioner of the embodiment of the present invention.
Appended drawing reference indicates are as follows:
1, compressor；2, indoor heat exchanger；3, throttling set；4, the first bypass line；5, outdoor heat exchanger；6, the first control
Valve processed；7, gas-liquid separator；8, four-way valve；9, interior comb；10, outer comb；11, connecting tube；12, the second bypass line；13,
Two control valves；14, branch；15, supercooling tube.
Specific embodiment
Arrow direction in figure is air-flow direction.
In conjunction with referring to FIG. 1 to FIG. 4, according to an embodiment of the invention, air conditioner includes compressor 1, indoor heat exchanger
2, heat exchanger 2 and outdoor heat exchanger indoors is arranged in throttling set 3, the first bypass line 4 and outdoor heat exchanger 5, throttling set 3
On pipeline between 5, the first end of the first bypass line 4 is connected to outdoor heat exchanger 5, for conveying height to outdoor heat exchanger 5
Warm refrigerant is provided with the first control valve 6 of control 4 on-off of the first bypass line on the first bypass line 4.
The air conditioner under low-temperature heating operating condition, can control the first bypass line 4 to room by the first control valve 6
External heat exchanger 5 conveys high temperature refrigerant, can upset the frosting condition of outdoor heat exchanger 5, while guaranteeing normal heat supply, extends
The period of frosting defrosting, and the time of defrosting can be shortened, promote the comfort of low-temperature heating.High temperature refrigerant herein be relative to
For outdoor heat exchanger 5, refer to that under heating condition temperature is higher than the refrigerant of refrigerant temperature in outdoor heat exchanger 5, in this implementation
Example high temperature refrigerant is the refrigerant flowed out from the outlet end of the exhaust outlet of compressor 1 or indoor heat exchanger 2.
After the air conditioner using the application, for traditional air conditioner, frosting defrosting cycle can extend 3
Times, defrosting time can shorten 5%, and indoor comfort is made to be improved significantly.
The on-off of the first bypass line 4 is controlled by the first control valve 6, can periodicity or not timing will part it is high
Warm refrigerant is directly communicated to outdoor heat exchanger 5, promotes the tube temperature of outdoor heat exchanger, upsets the temperature condition of frosting.
Air conditioner further includes gas-liquid separator 7, and the air return end of compressor 1 is arranged in gas-liquid separator 7.Passing through the first control
When valve 6 processed controls the connection of the first bypass line 4, high temperature refrigerant can enter directly into outdoor heat exchange under the situation without throttling
In device 5, defrost is carried out to outdoor heat exchanger, there may be more liquid refrigerants for the refrigerant after completing defrost, by the way that gas-liquid is arranged
Separator 7 can carry out gas-liquid separation to the refrigerant for being back to compressor 1, prevent liquid refrigerants from entering the air return end of compressor
And liquid hit phenomenon occurs.
Air conditioner further includes four-way valve 8, and four interfaces of four-way valve 8 are respectively connected to indoor heat exchanger 2, outdoor heat exchanger
5, the exhaust end and air return end of compressor 1.
Outdoor heat exchanger 5 include multiple rows of heat exchanger tube, multiple rows of heat exchanger tube include close to inlet side outer comb 10 and far from into
The interior comb 9 of wind side, multiple rows of heat exchanger tube are divided into the pipe group that multiple groups are arranged in parallel, positioned at the interior comb 9 and outer comb of same pipe group
10 are connected by connecting tube 11, and the first bypass line 4 is connected to connecting tube 11.In the present embodiment, outdoor heat exchanger 5 includes two
Heat exchanger is arranged, comb 9 and an exclusive comb 10 in a row, interior comb 9 and outer comb 10 are divided into four pipe groups, each Guan Zujun
Including quantity same or similar interior comb 9 and outer comb 10, to form four set of heat exchange tubes in parallel.First bypass pipe
Road 4 is connected to the connecting tube 11 at 10 link position of interior comb 9 and outer comb, can be when the first bypass line 4 is connected to, will be high
Warm refrigerant respectively leads to interior comb 9 and outer comb 10, makes interior comb 9 and outer comb 10 while defrosting, and improves high temperature refrigerant
Utilization efficiency, thus achieve the purpose that shorten defrosting time.
Outdoor heat exchanger 5 further includes supercooling tube 15, and throttling set 3 is connect through supercooling tube 15 with pipe group.15 energy of supercooling tube
Enough exchange heat pipe heats are subcooled, to improve the heat exchange efficiency of outdoor heat exchanger 5.
First control valve 6 and the second control valve 13 are solenoid valve, and throttling set 3 is electric expansion valve.
In conjunction with shown in Figure 1, first embodiment according to the present invention, the second end of the first bypass line 4 is connected to room
Interior heat exchanger 2 is close to one end of throttling set 3.In the present embodiment, 4 He of the first bypass line is only added on original system
First control valve 6, wherein the first control valve 6 is in parallel with throttling set 3, one end of the first control valve is connected with indoor heat exchanger 2
It connects, the other end is divided into four branches 14, and branch 14 is connected one to one by the connecting tube 11 at stream that turns of tee tube and former branch.
It is essentially identical with first embodiment in conjunction with shown in Figure 2, second embodiment according to the present invention, difference
It is in in the present embodiment, air conditioner further includes the second bypass line 12, and the first end of the second bypass line 12 is connected to room
External heat exchanger 5, the second end of the second bypass line 12 are connected to indoor heat exchanger 2 close to one end of throttling set 3, the second bypass
The second control valve 13 of control 12 on-off of the second bypass line is provided on pipeline 12.In the present embodiment, for the ease of stating,
Setting the first control valve 6 is solenoid valve A, and the second control valve 13 is solenoid valve B.
In the present embodiment, two solenoid valves and distribution pipeline are added on original system.When heating operation, as solenoid valve A
When being in off-position with solenoid valve B, refrigerant flows through indoor heat exchanger 2 through exhaust outlet and changes after 1 compressed action of compressor
Heat passes through electric expansion valve and carries out throttling cooling, passes through the heat exchange of outdoor heat exchanger 5, is finally inhaled by the air entry of compressor 1
Enter, into circulating next time.When solenoid valve A and solenoid valve B are in energized state, refrigerant is done through the compression of compressor 1
It after function, is flowed through after indoor heat exchanger 2 exchanges heat through exhaust outlet, a part is by solenoid valve A, by distribution pipeline by a part of higher temperatures
The refrigerant of degree directly fills into interior comb 9.A part of refrigerant branches to the outer of outdoor heat exchanger 5 through solenoid valve B and electric expansion valve
Comb 10.After refrigerant completes heat exchange at outdoor heat exchanger 5, is sucked by compressor 1 from air entry, carry out recycle stream next time
It is dynamic.
Solenoid valve A and solenoid valve B are in parallel with electric expansion valve, and the one end solenoid valve A is swollen close to electronics with indoor heat exchanger 2
One end of swollen valve is connected (when heating, the exit of indoor heat exchanger 2), and one end is divided into four tunnel branches 14, and each branch 14 passes through
Tee tube connects at stream with former turning for branch.The one end solenoid valve B is connected with one end of indoor heat exchanger 2, and (when heating, interior is changed
The exit of hot device), one end is split into four tunnels, and when flow direction is powered off with solenoid valve, the refrigerant after electric expansion valve flows to one
It causes.Above-mentioned air conditioner is not limited to single stage compress heat pump system, is also applied for two-stage compression heat pump system, transfiguration compressing hot pump system
System.The flow path of heat pump system is also not necessarily limited to flow path shown in Fig. 2, can be adjusted flexibly according to the performance of heat pump air conditioner.
In conjunction with shown in Figure 3, third embodiment according to the present invention, the second end of the first bypass line 4 is connected to room
The interior one end of heat exchanger 2 far from throttling set 3.
In the present embodiment, first control valve 6 is only added on original system.First control valve 6 and electric expansion valve
Parallel connection, 6 one end of the first control valve are connected (when heating, the inlet of indoor heat exchanger 2) with 2 one end of indoor heat exchanger, one end
It is divided into four tunnel branches 14, each branch 14 is connected at stream by tee tube with former turning for branch.
It is essentially identical with 3rd embodiment in conjunction with shown in Figure 4, fourth embodiment according to the present invention, difference
It is in in the present embodiment, air conditioner further includes the second bypass line 12, and the first end of the second bypass line 12 is connected to room
External heat exchanger 5, the second end of the second bypass line 12 are connected to the one end of indoor heat exchanger 2 far from throttling set 3, the second bypass
The second control valve 13 of control 12 on-off of the second bypass line is provided on pipeline 12.In the present embodiment, for the ease of stating,
Setting the first control valve 6 is solenoid valve A, and the second control valve 13 is solenoid valve B.
In the present embodiment, solenoid valve A and solenoid valve B are in parallel with electric expansion valve, the one end solenoid valve A and indoor heat exchange
Device 2 is connected (when heating, the entrance of indoor heat exchanger 2) far from one end of electric expansion valve, and one end is divided into four tunnel branches 14,
Each branch 14 is connected at stream by tee tube with former turning for branch.The one end solenoid valve B is connected with one end of indoor heat exchanger 2
(when heating, the entrance of indoor heat exchanger 2), one end is split into four tunnels, when flow direction is powered off with solenoid valve, through electric expansion valve
Refrigerant flow direction afterwards is consistent.
In one embodiment not shown in the figure, essentially identical with fourth embodiment, the difference is that, in the reality
It applies in example, the second end of the second bypass line 12 is connected to indoor heat exchanger close to one end of throttling set 3.
In conjunction with referring to shown in Fig. 5 to Fig. 8, according to an embodiment of the invention, a kind of control method packet of above-mentioned air conditioner
It includes: obtaining the current operating conditions of air conditioner；The first control valve 6 is controlled according to the current operating conditions of air conditioner.
The step of obtaining the current operating conditions of air conditioner includes: the operating condition for obtaining air conditioner, when air conditioner is in
When heating condition, outdoor environment temperature T is obtainedOuter ring；Obtain the intermediate coil temperature T of outdoor heat exchanger 5Outer tube。
If the step of current operating conditions of air conditioner control the first control valve 6 includes: to detect TOuter ring≤Ta,
And the continuous t1 time detects TOuter tube≤Tb, control electric expansion valve holding current state；The first control valve 6 is controlled to be connected to and hold
Then the continuous t2 time controls the first control valve 6 and disconnects and continue the t3 time, executes the step repeatedly.
When air conditioner further includes the second bypass line 12, the current operating conditions of air conditioner carry out the first control valve 6
If the step of control includes: to detect TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb, control electric expansion valve holding and work as
Preceding state；It controls the first control valve 6 and the second control valve 13 while being connected to and continuing the t2 time, then control the first control valve 6
It is simultaneously switched off with the second control valve 13 and continues the t3 time, execute the step repeatedly.
When air conditioner further includes the second bypass line 12, the current operating conditions of air conditioner carry out the first control valve 6
If the step of control includes: to detect TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb；Control the holding of the second control valve 13
It disconnects；It controls the first control valve 6 to be connected to and continue the t2 time, control electric expansion valve is opened to maximum opening, then controls first
Control valve 6 disconnects and continues the t3 time, and control electric expansion valve is opened to former aperture, executes the step repeatedly.
Control method further include: when detecting that air conditioner reaches into defrosting condition, then defrosting control is carried out to air conditioner.
The step of obtaining the current operating conditions of air conditioner includes: the operating condition for obtaining air conditioner, when air conditioner is in Defrost operation
When state；The step of current operating conditions of air conditioner control the first control valve 6 includes: that the first control valve 6 of control connects
Logical, control electronic expansion valve opening is opened to maximum.
Control method further include: at the end of defrost, the first control valve 6 of control is disconnected, and control electronic expansion valve opening is opened
To initial opening.
When air conditioner further includes the second bypass line 12, the step of obtaining the current operating conditions of air conditioner includes: to obtain
The operating condition for taking air conditioner, when air conditioner is in Defrost operation state；The current operating conditions of air conditioner are controlled first
The step of valve 6 is controlled includes: that control the first control valve 6 and the second control valve 13 are connected to simultaneously, controls electric expansion valve and opens
Degree is opened to minimum.
Control method further include: at the end of defrost, control the first control valve 6 and the second control valve 13 simultaneously switches off, control
Electronic expansion valve opening processed is opened to initial opening.
TaValue range is 0~5 DEG C, TbValue range is -15~0 DEG C, and t1 value range is 0~5min, t2 value range
For 0~30min, t3 value range is 0~30s.
In conjunction with referring to shown in Fig. 1 and Fig. 3, when using the air conditioner of first embodiment and 3rd embodiment, work is being heated
Under condition, when booting heats, if detecting outdoor environment temperature TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb, then solenoid valve
A is powered and continues the t2 time, then powers off and continues the t3 time, is then electrified to and continues the t2 time, when solenoid valve A is powered,
Electric expansion valve is opened to maximum, and when solenoid valve A power-off, electric expansion valve is opened to former aperture, is run repeatedly.Remaining load
Keep former operating status or former control model.If during solenoid valve A control system of switching on or off electricity, the system of detecting reaches into except ice-lolly
Part then carries out defrosting control.
When detecting that air conditioner enters defrosting control, then solenoid valve A energization is controlled, electronic expansion valve opening is opened to most
Greatly.After defrost, electric expansion valve is opened to initial opening, solenoid valve A power-off.
In conjunction with referring to fig. 2, shown in Fig. 4 and Fig. 6, when using the air conditioner of second embodiment and fourth embodiment, heating
Under operating condition, when booting heats, if detecting outdoor environment temperature TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb, then electromagnetism
Valve A and solenoid valve B is powered simultaneously and continues the t2 time, then powers off simultaneously and continues the t3 time, is then powered and continues simultaneously
It the t2 time, runs repeatedly.Electronic expansion valve opening is controlled by original heating logic.Remaining load keeps former operating status
Or former control model.If during solenoid valve control system of switching on or off electricity, if detecting, air conditioner reaches into defrosting condition, removed
Frost control.
When solenoid valve A and solenoid valve B is powered, high temperature refrigerant a part flows through outdoor heat exchanger 5 through former flow path, a part
Remaining heat exchanger tube is flowed through after converging with former flow path flow through tee tube, and the refrigerant temperature for flowing through heat exchanger tube at this time is higher than
Refrigerant temperature when solenoid valve A and solenoid valve B is powered off.The coil pipe medium temperature of outdoor heat exchanger 5 can be suitably promoted at this time, upset
The condition of frosting reaches inhibition frosting, postpones the purpose of frosting defrosting cycle.
When detecting that air conditioner enters defrosting control, solenoid valve A and solenoid valve B are powered simultaneously, electronic expansion valve opening
It opens to minimum.After defrost, electric expansion valve is opened to initial opening, and solenoid valve A and solenoid valve B are powered off simultaneously.
When being powered due to solenoid valve A and solenoid valve B, the refrigerant temperature of inside passages will be higher than former defrosting flow path, more has
Conducive to the thawing of 5 inside frost layer of outdoor heat exchanger, so that the defrosting efficiency of outdoor heat exchanger 5 be made to improve, shorten the time of defrosting.
In conjunction with referring to fig. 2, shown in Fig. 4 and Fig. 7, in another embodiment, under heating condition, when booting heating, if detection
To outdoor environment temperature TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb, then solenoid valve A is powered and continues the t2 time, electronics
Expansion valve is opened to maximum opening；Then solenoid valve A is powered off and is continued the t3 time, and electric expansion valve is opened to former aperture；Then electromagnetism
Valve A is powered and continues the t2 time, and electric expansion valve is opened to maximum opening；It runs repeatedly.Solenoid valve B is in power-off shape always
State.Remaining load keeps former operating status or former control model.If the system of detecting reaches during solenoid valve control system of switching on or off electricity
Into defrosting condition, then defrosting control is carried out.
When detecting that air conditioner enters defrosting control, solenoid valve A and solenoid valve B are powered simultaneously, electronic expansion valve opening
It opens to minimum.After defrost, electric expansion valve is opened to initial opening, and solenoid valve A and solenoid valve B are powered off simultaneously.
When being powered due to solenoid valve A and solenoid valve B, the refrigerant temperature of inside passages will be higher than former defrosting flow path, more has
Conducive to the thawing of 5 inside frost layer of outdoor heat exchanger, so that the defrosting efficiency of outdoor heat exchanger 5 be made to improve, shorten the time of defrosting.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Protect range.
Claims (22)
1. a kind of air conditioner, which is characterized in that including compressor (1), indoor heat exchanger (2), throttling set (3), the first bypass
Pipeline (4) and outdoor heat exchanger (5), the throttling set (3) are arranged in the indoor heat exchanger (2) and outdoor heat exchanger (5)
Between pipeline on, the first end of first bypass line (4) is connected to the outdoor heat exchanger (5), for the room
External heat exchanger (5) conveys high temperature refrigerant, and it is logical that control first bypass line (4) is provided on first bypass line (4)
Disconnected the first control valve (6).
2. air conditioner according to claim 1, which is characterized in that the air conditioner further includes gas-liquid separator (7), described
The air return end in the compressor (1) is arranged in gas-liquid separator (7).
3. air conditioner according to claim 1, which is characterized in that the air conditioner further includes four-way valve (8), the four-way
Four interfaces of valve (8) are respectively connected to the indoor heat exchanger (2), the outdoor heat exchanger (5), the compressor (1)
Exhaust end and air return end.
4. air conditioner according to any one of claim 1 to 3, which is characterized in that the outdoor heat exchanger (5) includes more
Heat exchanger tube is arranged, multiple rows of heat exchanger tube includes the interior comb (9) of the outer comb (10) and separate inlet side close to inlet side, described
Multiple rows of heat exchanger tube is divided into the pipe group that multiple groups are arranged in parallel, positioned at the interior comb (9) of same pipe group and the outer comb (10)
It is connected by connecting tube (11), first bypass line (4) is connected to the connecting tube (11).
5. air conditioner according to claim 4, which is characterized in that the second end of first bypass line (4) is connected to
The one end of the indoor heat exchanger (2) close to the throttling set (3).
6. air conditioner according to claim 5, which is characterized in that the air conditioner further includes the second bypass line (12),
The first end of second bypass line (12) is connected to the outdoor heat exchanger (5), and the of second bypass line (12)
Two ends are connected to the one end of the indoor heat exchanger (2) close to the throttling set (3), set on second bypass line (12)
It is equipped with the second control valve (13) for controlling the second bypass line (12) on-off.
7. air conditioner according to claim 4, which is characterized in that the second end of first bypass line (4) is connected to
The one end of the indoor heat exchanger (2) far from the throttling set (3).
8. air conditioner according to claim 7, which is characterized in that the air conditioner further includes the second bypass line (12),
The first end of second bypass line (12) is connected to the outdoor heat exchanger (5), and the of second bypass line (12)
Two ends are connected to the one end of the indoor heat exchanger (2) far from the throttling set (3), set on second bypass line (12)
It is equipped with the second control valve (13) for controlling the second bypass line (12) on-off.
9. air conditioner according to claim 4, which is characterized in that the first end of first bypass line (4) is provided with
Multiple branches (14), the branch (14) connect one to one with the connecting tube (11).
10. air conditioner according to claim 4, which is characterized in that the outdoor heat exchanger (5) further includes supercooling tube
(15), the throttling set (3) connect through the supercooling tube (15) with the pipe group.
11. air conditioner according to claim 6, which is characterized in that first control valve (6) and second control valve
It (13) is solenoid valve, the throttling set (3) is electric expansion valve.
12. a kind of control method of the air conditioner as described in any one of claims 1 to 11 characterized by comprising
Obtain the current operating conditions of air conditioner；
The first control valve (6) is controlled according to the current operating conditions of air conditioner.
13. control method according to claim 12, which is characterized in that the current operating conditions for obtaining air conditioner
Step includes:
The operating condition for obtaining air conditioner, when air conditioner is in heating condition,
Obtain outdoor environment temperature TOuter ring；
Obtain outdoor heat exchanger (5) intermediate coil temperature TOuter tube。
14. control method according to claim 13, which is characterized in that the current operating conditions of the air conditioner are to first
The step of control valve (6) is controlled include:
If detecting TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb,
It controls electric expansion valve and keeps current state；
It controls the first control valve (6) to be connected to and continue the t2 time, then controls the first control valve (6) and disconnect and continue the t3 time,
The step is executed repeatedly.
15. control method according to claim 13, which is characterized in that when air conditioner further includes the second bypass line (12)
When, the step of current operating conditions of the air conditioner control the first control valve (6) includes:
If detecting TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb,
It controls electric expansion valve and keeps current state；
It controls the first control valve (6) and the second control valve (13) while being connected to and continuing the t2 time, then control the first control valve
(6) it simultaneously switches off with the second control valve (13) and continues the t3 time, execute the step repeatedly.
16. control method according to claim 13, which is characterized in that when air conditioner further includes the second bypass line (12)
When, the step of current operating conditions of the air conditioner control the first control valve (6) includes:
If detecting TOuter ring≤Ta, and the continuous t1 time detects TOuter tube≤Tb；
The second control valve (13) is controlled to remain open；
It controls the first control valve (6) to be connected to and continue the t2 time, control electric expansion valve is opened to maximum opening, then controls first
Control valve (6) disconnects and continues the t3 time, and control electric expansion valve is opened to former aperture, executes the step repeatedly.
17. control method described in any one of 4 to 16 according to claim 1, which is characterized in that the control method is also wrapped
It includes:
When detecting that air conditioner reaches into defrosting condition, then defrosting control is carried out to air conditioner.
18. control method according to claim 12, which is characterized in that the current operating conditions for obtaining air conditioner
Step includes:
The operating condition for obtaining air conditioner, when air conditioner is in Defrost operation state；
The step of current operating conditions of the air conditioner control the first control valve (6) include:
The first control valve (6) connection is controlled, control electronic expansion valve opening is opened to maximum.
19. control method according to claim 18, which is characterized in that the control method further include:
At the end of defrost, control the first control valve (6) is disconnected, and control electronic expansion valve opening is opened to initial opening.
20. control method according to claim 12, which is characterized in that when air conditioner further includes the second bypass line (12)
When, it is described obtain air conditioner current operating conditions the step of include:
The operating condition for obtaining air conditioner, when air conditioner is in Defrost operation state；
The step of current operating conditions of the air conditioner control the first control valve (6) include:
It controls the first control valve (6) and the second control valve (13) while being connected to, control electronic expansion valve opening is opened to minimum.
21. control method according to claim 20, which is characterized in that the control method further include:
At the end of defrost, controls the first control valve (6) and the second control valve (13) simultaneously switches off, control electronic expansion valve opening
It opens to initial opening.
22. control method described in any one of 4 to 16 according to claim 1, which is characterized in that TaValue range is 0~5 DEG C,
TbValue range be -15~0 DEG C, t1 value range be 0~5min, t2 value range be 0~30min, t3 value range be 0~
30s。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134141.7A CN109386982B (en) | 2018-09-27 | 2018-09-27 | Air conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134141.7A CN109386982B (en) | 2018-09-27 | 2018-09-27 | Air conditioner and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109386982A true CN109386982A (en) | 2019-02-26 |
| CN109386982B CN109386982B (en) | 2020-06-12 |
Family
ID=65418095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811134141.7A Active CN109386982B (en) | 2018-09-27 | 2018-09-27 | Air conditioner and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386982B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156653A (en) * | 2019-12-16 | 2020-05-15 | 珠海格力电器股份有限公司 | Fault detection method for hot defrosting electromagnetic bypass valve, storage medium and air conditioner |
| CN111637656A (en) * | 2019-03-01 | 2020-09-08 | 珠海格力电器股份有限公司 | Air conditioner and control method |
| CN111637583A (en) * | 2020-05-25 | 2020-09-08 | 宁波奥克斯电气股份有限公司 | Condenser flow path structure, control method and air conditioner |
| CN111678224A (en) * | 2020-06-18 | 2020-09-18 | 青岛海信日立空调***有限公司 | Air source heat pump |
| WO2020215787A1 (en) * | 2019-04-26 | 2020-10-29 | 珠海格力电器股份有限公司 | Control method for heat pump system |
| CN112229116A (en) * | 2020-10-15 | 2021-01-15 | 珠海格力电器股份有限公司 | Air source heat pump unit defrosting control method and device and air conditioning system |
| CN113639413A (en) * | 2021-07-23 | 2021-11-12 | 青岛海尔空调电子有限公司 | Defrosting control method for air conditioner and air conditioner |
| CN114838529A (en) * | 2021-09-19 | 2022-08-02 | 青岛海尔空调器有限总公司 | Method and device for adjusting heat exchange volume of heat exchanger and air conditioner |
| CN115307348A (en) * | 2022-08-04 | 2022-11-08 | 国网陕西省电力有限公司电力科学研究院 | Reverse-cycle defrosting air source heat pump system and control method thereof |
| CN115479371A (en) * | 2022-09-30 | 2022-12-16 | 青岛海尔空调器有限总公司 | Shunting control method and system with air conditioner power failure compensation function and air conditioner |
| EP4107454A4 (en) * | 2020-02-17 | 2024-03-06 | Lg Electronics Inc | Air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839292A (en) * | 1996-08-31 | 1998-11-24 | Lg Electronics, Inc. | Defroster for heat pump |
| JP2009287903A (en) * | 2008-06-02 | 2009-12-10 | Kansai Electric Power Co Inc:The | Thermal storage type heat pump device |
| CN102175052A (en) * | 2008-03-18 | 2011-09-07 | Lg电子株式会社 | Air conditioner and control method thereof |
| CN103162461A (en) * | 2011-12-13 | 2013-06-19 | 珠海格力电器股份有限公司 | Air-conditioner and defrost control method applied for air-conditioner |
| CN106352629A (en) * | 2016-08-22 | 2017-01-25 | 珠海格力电器股份有限公司 | Air conditioner and bypass heating defrosting control method thereof |
-
2018
- 2018-09-27 CN CN201811134141.7A patent/CN109386982B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839292A (en) * | 1996-08-31 | 1998-11-24 | Lg Electronics, Inc. | Defroster for heat pump |
| CN102175052A (en) * | 2008-03-18 | 2011-09-07 | Lg电子株式会社 | Air conditioner and control method thereof |
| JP2009287903A (en) * | 2008-06-02 | 2009-12-10 | Kansai Electric Power Co Inc:The | Thermal storage type heat pump device |
| CN103162461A (en) * | 2011-12-13 | 2013-06-19 | 珠海格力电器股份有限公司 | Air-conditioner and defrost control method applied for air-conditioner |
| CN106352629A (en) * | 2016-08-22 | 2017-01-25 | 珠海格力电器股份有限公司 | Air conditioner and bypass heating defrosting control method thereof |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637656A (en) * | 2019-03-01 | 2020-09-08 | 珠海格力电器股份有限公司 | Air conditioner and control method |
| WO2020215787A1 (en) * | 2019-04-26 | 2020-10-29 | 珠海格力电器股份有限公司 | Control method for heat pump system |
| CN111854056A (en) * | 2019-04-26 | 2020-10-30 | 珠海格力电器股份有限公司 | Control method of heat pump system |
| EP3961125A4 (en) * | 2019-04-26 | 2022-06-15 | Gree Electric Appliances, Inc. of Zhuhai | Control method for heat pump system |
| CN111156653A (en) * | 2019-12-16 | 2020-05-15 | 珠海格力电器股份有限公司 | Fault detection method for hot defrosting electromagnetic bypass valve, storage medium and air conditioner |
| JP7460783B2 (en) | 2020-02-17 | 2024-04-02 | エルジー エレクトロニクス インコーポレイティド | Air conditioners |
| EP4107454A4 (en) * | 2020-02-17 | 2024-03-06 | Lg Electronics Inc | Air conditioner |
| CN111637583A (en) * | 2020-05-25 | 2020-09-08 | 宁波奥克斯电气股份有限公司 | Condenser flow path structure, control method and air conditioner |
| CN111678224B (en) * | 2020-06-18 | 2022-02-08 | 青岛海信日立空调***有限公司 | Air source heat pump |
| CN111678224A (en) * | 2020-06-18 | 2020-09-18 | 青岛海信日立空调***有限公司 | Air source heat pump |
| CN112229116A (en) * | 2020-10-15 | 2021-01-15 | 珠海格力电器股份有限公司 | Air source heat pump unit defrosting control method and device and air conditioning system |
| CN113639413A (en) * | 2021-07-23 | 2021-11-12 | 青岛海尔空调电子有限公司 | Defrosting control method for air conditioner and air conditioner |
| CN114838529A (en) * | 2021-09-19 | 2022-08-02 | 青岛海尔空调器有限总公司 | Method and device for adjusting heat exchange volume of heat exchanger and air conditioner |
| CN114838529B (en) * | 2021-09-19 | 2024-03-19 | 青岛海尔空调器有限总公司 | Method and device for adjusting heat exchange volume of heat exchanger and air conditioner |
| CN115307348A (en) * | 2022-08-04 | 2022-11-08 | 国网陕西省电力有限公司电力科学研究院 | Reverse-cycle defrosting air source heat pump system and control method thereof |
| CN115479371A (en) * | 2022-09-30 | 2022-12-16 | 青岛海尔空调器有限总公司 | Shunting control method and system with air conditioner power failure compensation function and air conditioner |
| CN115479371B (en) * | 2022-09-30 | 2024-05-24 | 青岛海尔空调器有限总公司 | Shunt control method and system for power failure compensation function of air conditioner and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109386982B (en) | 2020-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109386982A (en) | Air conditioner and its control method | |
| CN101975422B (en) | Warm/cool air-conditioner and defrosting method thereof | |
| CN108131858B (en) | A kind of heat pump air conditioning system and its control method | |
| CN102878663B (en) | Air conditioning system capable of improving heating effect and defrosting control method for air conditioning system | |
| EP3745052B1 (en) | Heat pump air conditioning system and control method | |
| CN106288562B (en) | A kind of the defrosting control device and its method of air source heat pump system | |
| CN105627432A (en) | Air conditioning system and defrosting control method thereof | |
| CN104154673B (en) | A kind of refrigerating method of Three-pipe heat recovery multi-connected machine system and system | |
| JP2001059664A (en) | Air conditioner | |
| CN202613832U (en) | Air conditioning system | |
| CN104329824A (en) | Multi-connected type air conditioner system and control method thereof | |
| CN104748464A (en) | Multiple on-line defrosting method and device of air conditioning system and air conditioner | |
| CN104764087A (en) | Two-stage heating air conditioning system with defrosting function and control method thereof | |
| CN202885329U (en) | Air-conditioning system | |
| CN102183108A (en) | Defrosting method of three-pipe heating recovery system | |
| CN106885391A (en) | A kind of air-conditioner and its control method | |
| CN101509718B (en) | Air cooling refrigerator automatic defrosting system | |
| CN209819922U (en) | Heat pump air conditioning system | |
| CN108007016A (en) | The control method of heat pump system and heat pump system | |
| CN106288484B (en) | A kind of air source heat pump system and its defrosting control method | |
| CN102538272B (en) | Air-conditioning system and defrosting method thereof | |
| CN109737635B (en) | Heat pump air conditioning system of electric automobile | |
| CN201314726Y (en) | Parallel flow air conditioner | |
| CN110332618A (en) | Outdoor unit, air-conditioning system and control method with continuous heating function | |
| CN214746181U (en) | Air conditioning unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dong Mingzhu Inventor after: Lin Jinhuang Inventor after: Zou Yunhui Inventor after: Tan Jianming Inventor after: Xia Guanghui Inventor after: Liang Bo Inventor after: Chen Jiao Inventor after: Feng Qinglong Inventor after: He Zhenjian Inventor after: Qin Xiaoke Inventor after: Liu Leiming Inventor before: Chen Jiao Inventor before: Feng Qinglong Inventor before: He Zhenjian Inventor before: Qin Xiaoke Inventor before: Liu Leiming Inventor before: Lin Jinhuang Inventor before: Zou Yunhui |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200714 Address after: 519000 Guangdong city of Zhuhai Province Qianshan Co-patentee after: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Address before: Xiangzhou District of Guangdong city in Zhuhai province 519070 Qianshan No. 789 Patentee before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211011 Address after: 230088 208, Ming Chuan Road, Anhui science and Technology Park, Hefei high tech Zone Patentee after: GREE ELECTRIC(HEFEI) Co.,Ltd. Patentee after: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Patentee after: GREE ELECTRIC APPLIANCE (ZHENGZHOU) Co.,Ltd. Address before: 519000 Qianshan Golden Chicken West Road in Zhuhai, Guangdong Patentee before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Patentee before: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211102 Address after: 519070 office 608, No. 108, Huitong Third Road, Hengqin New District, Zhuhai City, Guangdong Province Patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Patentee after: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Address before: 230088 208, Ming Chuan Road, Anhui science and Technology Park, Hefei high tech Zone Patentee before: GREE ELECTRIC(HEFEI) Co.,Ltd. Patentee before: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Patentee before: GREE ELECTRIC APPLIANCE (ZHENGZHOU) Co.,Ltd. |