CN103411340B - Outdoor heat exchange device and Defrost method thereof - Google Patents
Outdoor heat exchange device and Defrost method thereof Download PDFInfo
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- CN103411340B CN103411340B CN201310303523.9A CN201310303523A CN103411340B CN 103411340 B CN103411340 B CN 103411340B CN 201310303523 A CN201310303523 A CN 201310303523A CN 103411340 B CN103411340 B CN 103411340B
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Abstract
The invention discloses a kind of outdoor heat exchange device and Defrost method thereof, this outdoor heat exchange device includes total escape pipe, total feed tube, multiple outdoor heat exchanger, multiple first electromagnetic valve and multiple second electromagnetic valve, first electromagnetic valve and outdoor heat exchanger one_to_one corresponding, the second electromagnetic valve and outdoor heat exchanger one_to_one corresponding；The escape pipe of outdoor heat exchanger connects one end of the first electromagnetic valve of its correspondence and one end of its corresponding second electromagnetic valve respectively, and the other end of the first electromagnetic valve connects total escape pipe, and the other end of the second electromagnetic valve is for connecting the exhaustor of the compressor of air conditioning system；The feed tube of each outdoor heat exchanger is interconnected and connects with total feed tube.The outdoor heat exchange device of the present invention and Defrost method thereof, it is achieved that the continuously heating of air conditioning system, heat and can carry out defrosting operation simultaneously, it is ensured that air conditioning system can persistently keep heating operation when user uses, and does not affect the long-time of user and uses continuously.
Description
Technical field
The present invention relates to air-conditioning technical field, be related specifically to a kind of outdoor heat exchange device and defrosting thereof
Method.
Background technology
The indoor and outdoor heat exchanger of domestic air conditioner generally uses copper tube with fins heat exchanger, is in low in outdoor
Under temperature high humidity environment, if the long-time heating operation of air-conditioner, inevitably at outdoor heat exchange
Device surface has the frost of different-thickness, and make air conditioning system changes heat decay aggravation, has a strong impact on
Heating load to indoor room.Existing technology is usually in the midway of heating operation by air-conditioning control
Device processed judges frosting situation, then uses cross valve commutation, and system runs refrigeration modes to outdoor
Heat exchanger defrosts, and makes cross valve commutation again recover heating operation after defrosting again.This
The defect planting Defrost technology is: during defrosting, it is impossible to heat, to room in defrosting during this period of time
The heating load of inner room is almost nil, and room temperature can decline, it is impossible to ensure the warm of room,
Defrosting complete when again heating, the heating load rate of climb of indoor room is slow, causes indoor room
Between average heating capacity decline, room temperature fluctuation strengthen, the comfortableness that heats in room can not get
Ensure.
Summary of the invention
The main object of the present invention is for providing a kind of outdoor that can carry out during defrosting and heating simultaneously
Heat-exchanger rig and Defrost method thereof.
The present invention proposes the outdoor heat exchange device of a kind of air conditioning system, including for connecting described air-conditioning system
Total escape pipe of the cross valve of system, for connecting the throttle part liquid outlet of described air conditioning system
Total feed tube, multiple outdoor heat exchanger, multiple first electromagnetic valve and multiple second electromagnetic valve, institute
State the first electromagnetic valve and described outdoor heat exchanger one_to_one corresponding, described second electromagnetic valve and described room
External heat exchanger one_to_one corresponding；The escape pipe of described outdoor heat exchanger connects the first of its correspondence respectively
One end of electromagnetic valve and one end of its corresponding second electromagnetic valve, the other end of described first electromagnetic valve
Connecting described total escape pipe, the other end of described second electromagnetic valve is used for connecting described air conditioning system
The exhaustor of compressor；The feed tube of each outdoor heat exchanger
It is interconnected and connects with described total feed tube.
Preferably, each outdoor heat exchanger is mutually oppositely arranged in upper-lower position.
Preferably, described first electromagnetic valve is normally open solenoid valve, and described second electromagnetic valve is normally closed electromagnetism
Valve.
Preferably, the control electrically connected respectively is also included with described first electromagnetic valve and described second electromagnetic valve
Device processed.
Preferably, the coil pipe of described outdoor heat exchanger is provided with the first temperature for detecting its coil temperature
Degree sensor, described total feed tube is provided with for detecting described outdoor heat exchange device feed liquor temperature
The second temperature sensor, described first temperature sensor and the second temperature sensor respectively with institute
State controller electrical connection.
The present invention also proposes a kind of Defrost method based on above-mentioned outdoor heat exchange device, including step:
One by one the coil temperature of outdoor heat exchanger is detected by preset order；
When the coil temperature of currently detected outdoor heat exchanger is less than the first preset temperature threshold values, control
The outdoor heat exchanger of current detection processed carries out defrosting operation；
Judge that the outdoor heat exchanger defrosting operation of described current detection completes the most；
If current outdoor heat exchanger defrosting operation is not fully complete, then continue to control the outdoor of described current detection
Heat exchanger carries out defrosting operation；
If the outdoor heat exchanger defrosting operation of described current detection completes, then it is right to judge whether to complete
The detection of the coil temperature of all of outdoor heat exchanger；
If being not fully complete the detection of the coil temperature to all of outdoor heat exchanger, then continue by preset order
One by one the coil temperature of the outdoor heat exchanger not detected is detected；
If having completed the detection of the coil temperature to all of outdoor heat exchanger, then exit defrosting detection.
Preferably, further comprise the steps of:
Detect the feed liquor temperature of total feed tube of described outdoor heat exchange device；
When described feed liquor temperature is more than the second preset temperature threshold values, one by one outdoor is changed by preset order
The coil temperature of hot device detects.
Preferably, described judge that the outdoor heat exchanger defrosting operation of described current detection is the most completed
Step particularly as follows:
Judge that whether the coil temperature of outdoor heat exchanger of described current detection is more than or equal to described first
Preset temperature threshold values.
Preferably, the outdoor heat exchanger of the described current detection of described control carries out the step tool of defrosting operation
Body
For:
Control the first closed electromagnetic valve and the second of correspondence that the outdoor heat exchanger of described current detection is corresponding
Electromagnetic valve is opened, and cross valve keeps "on" position when heating.
Preferably, described preset order is order from top to bottom.
The outdoor heat exchange device of the present invention, when air conditioning system is run and heated, by multiple outdoor heat exchanges
Device carries out heat exchange, when outdoor heat exchanger needs defrosting, by least one of which outdoor heat exchanger
Keep heating mode heat exchange, and at least one outdoor heat exchanger is switched to refrigeration mode operation and removes
Frost；Start again to rerun heating mode running the outdoor heat exchanger after refrigeration has defrosted,
The outdoor heat exchanger not carrying out defrosting is switched to refrigeration mode simultaneously and runs defrosting, thus real
Show the continuously heating of air conditioning system, heated and can carry out defrosting operation simultaneously, it is ensured that be empty
Adjusting system can persistently keep heating operation when user uses, and does not affect connecting for a long time of user
Continuous use.The Defrost method of the present invention, to the inspection one by one of the outdoor heat exchanger of outdoor heat exchange device
Survey whether frosting, the outdoor heat exchanger of frosting is carried out defrosting operation, one by one at outdoor heat exchanger
While defrosting, the outdoor heat exchanger being also not in defrosting operation keeps heating, both by removing
The good heating effect of outdoor heat exchange device is ensure that, again during defrosting operation after frost operation
Ensure that persistently heating of outdoor heat exchange device so that outdoor heat exchange device energy can be the most continuous
Keep heating mode work.
Accompanying drawing explanation
Fig. 1 is the structure that outdoor heat exchange device preferred embodiment of the present invention is connected with other parts of air conditioning system
Schematic diagram；
Fig. 2 is the flow chart of Defrost method first embodiment of the present invention；
Fig. 3 is the flow chart of Defrost method the second embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings into one
Step explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to
Limit the present invention.
As it is shown in figure 1, Fig. 1 is outdoor heat exchange device preferred embodiment of the present invention and other portion of air conditioning system
The structural representation that part connects, the outdoor heat exchange device 10 of the air conditioning system that this embodiment is mentioned,
Including total escape pipe A of the cross valve 20 for connecting air conditioning system, for connecting air conditioning system
Total feed tube B of throttle part 30 liquid outlet, multiple outdoor heat exchanger 11, multiple first electromagnetic valve
12 and multiple second electromagnetic valve 13, the first electromagnetic valve 12 and outdoor heat exchanger 11 one_to_one corresponding, the
Two electromagnetic valves 13 and outdoor heat exchanger 11 one_to_one corresponding；The escape pipe of outdoor heat exchanger 11 connects respectively
Connect one end of the first electromagnetic valve 12 of its correspondence and one end of its corresponding second electromagnetic valve 13, first
The other end of electromagnetic valve 12 connects total escape pipe A, and the other end of the second electromagnetic valve 13 is used for connecting sky
The exhaustor 41 of the compressor 40 of adjusting system；The feed tube of each outdoor heat exchanger 11 is interconnected
And connect with total feed tube B.
The outdoor heat exchange device 10 of the present embodiment, when air conditioning system is run and heated, by multiple outdoors
Heat exchanger 11 carries out heat exchange, when outdoor heat exchanger 11 needs defrosting, by least one of which room
External heat exchanger 11 keeps heating mode heat exchange, and at least one outdoor heat exchanger 11 is switched to system
Cold mode operation defrosts；Start again again running the outdoor heat exchanger 11 after refrigeration has defrosted
Run heating mode, the outdoor heat exchanger 11 not carrying out defrosting is switched to refrigeration mode fortune simultaneously
Row defrosting, thus achieves the continuously heating of air conditioning system, heats and can remove simultaneously
Frost operation, it is ensured that air conditioning system can persistently keep heating operation, not shadow when user uses
Ring the long-time of user to use continuously.
The outdoor heat exchanger 11 of outdoor heat exchange device 10 concrete heats and refrigeration mode switching removes
The implementation of frost is: closed by the first electromagnetic valve 12 of control room external heat exchanger 11 correspondence,
Stop the aerofluxus output of the escape pipe of this outdoor heat exchanger 11, control the second electromagnetism of correspondence simultaneously
Valve 13 is opened, and the high temperature and high pressure gaseous refrigerant in the exhaustor 41 of compressor 40 changes through this outdoor
Second electromagnetic valve 13 of hot device 11 correspondence is input to the escape pipe of this outdoor heat exchanger 11, goes out from this
Trachea enters in this outdoor heat exchanger 11, and the gaseous refrigerant of High Temperature High Pressure carries out heat release, right
This outdoor heat exchanger 11 defrosts, and the cold-producing medium becoming middle temperature liquid after heat release changes from this outdoor
The feed tube of hot device 11 flows out, middle temperature liquid refrigerant and the low temperature liquid flowed into from total feed tube B
Cold-producing medium enters into from the feed tube of outdoor heat exchanger 11 running heating mode after converging and heats mould
In the outdoor heat exchanger 11 of formula, owing to there being the mixed of middle temperature liquid refrigerant and low temperature liquid cold-producing medium
Close so that the temperature entering into cold-producing medium in the outdoor heat exchanger 11 of heating mode is higher, steam
The heat sending out required absorption is less, slow down and is in the outdoor heat exchanger 11 of heating mode and enters one
The speed of step frosting；After defrosting completes, control the first corresponding electromagnetic valve 12 and open, second
Electromagnetic valve 13 cuts out, and the outdoor heat exchanger 11 after defrosting reruns heating mode.Outdoor heat exchange
Its outdoor heat exchanger 11 is carried out refrigeration defrosting by device 10 several times: first allow a part of outdoor heat exchange
Device 11
Defrosting, remainder outdoor heat exchanger 11 keeps heating mode；The outdoor of refrigeration defrosting is changed
After the defrosting of hot device 11, switching recovers heating mode, in the outdoor heat exchanger 11 of remainder
A part of outdoor heat exchanger 11 carry out refrigeration defrosting, in the outdoor heat exchanger 11 of remainder
Another part outdoor heat exchanger 11 continues to keep refrigeration；So defrost several times, until institute
The outdoor heat exchanger 11 that there is a need to defrosting defrosts complete, all runs heating mode.
The present embodiment is with 11, two the first electromagnetic valves 12 of two outdoor heat exchangers and two the second electromagnetic valves
13 is preference, is described in detail.
Further, each outdoor heat exchanger 11 is mutually oppositely arranged in upper-lower position that (outdoor is changed
Hot device 11 is stacked on another outdoor heat exchanger 11 and is provided above).The present embodiment such as be two
Individual outdoor heat exchanger 11, an outdoor heat exchanger 111 is on another outdoor heat exchanger 112
, go to upper and lower layer and arrange, when so making that outdoor heat exchanger 111 superincumbent defrost
, the globule drippage that the temperature of the frost formation after thawing is higher relative to frost layer flows to following outdoor
On heat exchanger 112 so that running the frost layer on the outdoor heat exchanger 112 heated below also can part
Or all melt, so can reduce following outdoor heat exchanger 112 required when defrosting
Defrosting time, reduces the electric energy needed for overall defrosting, has saved the energy.
Further, each outdoor heat exchanger 11 the most just to arranging (the most just to area maximum),
So make what the globule that outdoor heat exchanger 11 above flows down can be most to drip to following outdoor
On heat exchanger 11, the more frost layer melted on following outdoor heat exchanger 11.Certainly each room
External heat exchanger 11 can also be arranged side by side or scattering device, and the present embodiment is only with upper-lower position phase
As a example by arranging.
Further, the outdoor heat exchange device 10 of the present embodiment also include respectively with the first electromagnetic valve 12 and
The controller (not shown) of the second electromagnetic valve 13 electrical connection.On the coil pipe of outdoor heat exchanger 11
It is provided with the first temperature sensor (not shown) for detecting its coil temperature, total feed tube
B is provided with the second temperature sensor 14 for detecting outdoor heat exchange device 10 feed liquor temperature, and first
Temperature sensor and the second temperature sensor 14 are electrically connected with the controller respectively.Concrete control is real
Existing mode is: first pass through the feed liquor temperature of the detection total feed tube B of outdoor heat exchange device 10, when this
When feed liquor temperature is more than feed liquor temperature threshold (being set in advance) preset, controller is by pre-
If order (order the most from top to bottom, or order from the bottom up, etc.) control first
The coil temperature of temperature sensor sensing chamber external heat exchanger 11, when outdoor heat exchanger 11 being detected
Coil temperature is less than the coil temperature threshold value (set in advance) preset, and controller controls this room
The first corresponding electromagnetic valve 12 of external heat exchanger 11 is cut out and the second corresponding electromagnetic valve 13 is opened,
This outdoor heat exchanger 11 runs refrigeration mode and carries out defrosting operation, when this outdoor heat exchanger
11 have defrosted, and (i.e. the coil temperature of this outdoor heat exchanger 11 is more than or equal to the coil pipe temperature preset
Bottom valve value), controller controls the first electromagnetic valve 12 of this outdoor heat exchanger 11 correspondence and opens and right
The second electromagnetic valve 13 answered cuts out, and this outdoor heat exchanger 11 resumes operation and heats, and continues to detect it
The coil temperature of his outdoor heat exchanger 11, such loop control, until all of outdoor heat exchanger
The coil temperature of 11 all detects complete, i.e. completes a whole set of defrosting operation, and one-time detection arrives instantly
When feed liquor temperature is more than the feed liquor temperature threshold preset, run this defrosting circulation at this.Concrete
, because outdoor heat exchanger 11 is when heating mode, if outdoor heat exchanger 11 has frosting, then it
Heat transfer effect can be deteriorated, namely the air around it can diminish with the heat exchange of cold-producing medium, warp
The temperature crossing the cold-producing medium after heat exchange can be than the cold-producing medium after heat exchange during outdoor heat exchanger 11 non-frosting
Temperature lower, so the temperature on the coil pipe of outdoor heat exchanger 11 is lower, as long as so
The coil temperature of outdoor heat exchanger 11 is less than the coil temperature threshold values preset (by default coil pipe temperature
Coil temperature value when spending the ratio outdoor heat exchanger 11 non-frosting of threshold value setting is little or equal), just
Can obtain outdoor heat exchanger 11 and have frosting, now control room external heat exchanger 11 carries out defrosting operation.
First pass through the temperature of total feed tube B of detection outdoor heat exchange device 10, determine whether that outdoor is changed
The frosting of hot device 11 (during because having outdoor heat exchanger 11 frosting in outdoor heat exchange device 10, change by outdoor
The heat transfer effect of thermal 10 entirety is just deteriorated, so that the feed liquor temperature meeting of total feed tube B
Corresponding higher, it is more than feed liquor temperature when not having outdoor heat exchanger 11 frosting), without knot
Frost, the most not coil temperature of sensing chamber's external heat exchanger 11, do not result at outdoor heat exchanger 11 all
Go the coil temperature to outdoor heat exchanger 11 to detect in the case of not having frosting, improve the efficiency of detection
.After all of outdoor heat exchanger 11 completes defrosting, all of first electromagnetic valve 12 is opened, all
The second electromagnetic valve 13 close, all of outdoor heat exchanger 11 operates in heating mode.
Concrete, in the present embodiment, the first electromagnetic valve 12 is normally open solenoid valve, and the second electromagnetic valve 13 is
Normally closed solenoid valve.Normally open solenoid valve is i.e. when no power, and normally open solenoid valve is to be constantly in unlatching
State, during energising, normally open solenoid valve cuts out；Normally closed solenoid valve is i.e. when no power, normally closed
Electromagnetic valve is constantly in closed mode, and during energising, normally closed solenoid valve is opened.The present embodiment
It is only that as normally open solenoid valve and the second electromagnetic valve 13 is with the first electromagnetic valve 12 for normally closed solenoid valve
Example, is not intended to the protection domain of the present invention program.
The present invention also proposes a kind of Defrost method based on above-mentioned outdoor heat exchange device, as in figure 2 it is shown, figure
2 is the flow chart of Defrost method first embodiment of the present invention, and the Defrost method of the present embodiment includes:
Step S101, is detected the coil temperature of outdoor heat exchanger one by one by preset order；
Preset order in the present embodiment refers to detection ordering set in advance, such as, from top to bottom
Order or order from the bottom up, etc..
Step S102, it is judged that the coil temperature of currently detected outdoor heat exchanger is the most pre-less than first
If threshold temperature.
Coil temperature and the first preset temperature threshold value of the outdoor heat exchanger each detected compare
Relatively, seeing and whether reach defrosting condition, the defrosting condition of the present embodiment is the coil pipe of outdoor heat exchanger
Temperature is less than the first preset temperature threshold values.
When the coil temperature of currently detected outdoor heat exchanger is less than the first preset temperature threshold values, turn
Enter and perform following step S103, or, at the coil temperature of currently detected outdoor heat exchanger
During more than or equal to the first preset temperature threshold values, return and perform above-mentioned steps S101 with suitable by presetting
The coil temperature of the outdoor heat exchanger also not detected is detected by sequence one by one.
Step S103, the outdoor heat exchanger controlling current detection carries out defrosting operation.
Step S104, it is judged that the defrosting operation of the outdoor heat exchanger of current detection completes the most.
If the defrosting operation of the outdoor heat exchanger of current detection does not complete, then continue executing with above-mentioned steps
S103 proceeds defrosting operation with the outdoor heat exchanger to current detection, or, if currently examining
The defrosting operation of the outdoor heat exchanger surveyed completes, then proceed to perform following step S105.
In the present embodiment, it is judged that the condition whether the outdoor heat exchanger defrosting operation of current detection completes is
: whether the coil temperature of the outdoor heat exchanger of current detection is more than or equal to the first preset temperature valve
Value, if, then it represents that defrost, if not, then it represents that defrosting is not fully complete；Certainly this enforcement
Example is only with this Rule of judgment as preference, it is judged that the outdoor heat exchanger defrosting operation of current detection is complete
The condition become is can also be for other indexs, the defrosting time arrival etc. such as preset.
Step S105, it may be judged whether completed the detection of coil temperature to all of outdoor heat exchanger.
After the outdoor heat exchanger of current detection has defrosted, it may be judged whether completed all of outdoor
The detection of the coil temperature of heat exchanger, namely judges that whether the outdoor heat exchanger of current detection is
Last outdoor heat exchanger by preset order detection.
If also the coil temperature of outdoor heat exchanger detects, then return and perform above-mentioned steps S101
One by one the coil temperature of the outdoor heat exchanger also not detected is detected by preset order.
If also the coil temperature of outdoor heat exchanger detects, namely the outdoor heat exchange of current detection
Device is not last outdoor heat exchanger by preset order detection, then to the outdoor also do not detected
The coil temperature of heat exchanger is continued to detect one by one by preset order.
If having completed the detection of the coil temperature to all of outdoor heat exchanger, then exit defrosting detection.
I.e. exiting the detection one by one of the other pipe temperature to outdoor heat exchanger, outdoor heat exchange device exits defrosting
Pattern, recovers heating mode, and all outdoor heat exchangers run and heat.
The Defrost method of the outdoor heat exchange device that the present embodiment proposes, changes the outdoor of outdoor heat exchange device
Hot device one by one detect whether frosting, the outdoor heat exchanger of frosting is carried out defrosting operation one by one,
While outdoor heat exchanger defrosts, the outdoor heat exchanger being also not in defrosting operation keeps system
Heat, both by ensure that the good heating effect of outdoor heat exchange device after defrosting operation, is removing again
Frost operation process ensure that persistently heating of outdoor heat exchange device so that outdoor heat exchange device energy
Heating mode can be kept the most continuously to work.
Further, as it is shown on figure 3, the flow chart that Fig. 3 is Defrost method the second embodiment of the present invention.
The present embodiment scheme based on first embodiment of the invention, the Defrost method of the present embodiment also includes
:
Step S106, the feed liquor temperature of total feed tube of detection outdoor heat exchange device, it is judged that this feed liquor temperature
Whether degree is more than the second preset temperature threshold values；
When feed liquor temperature is more than the second preset temperature threshold values, perform above-mentioned steps S101, S102, S1
03、S104、S105。
In the present embodiment, the feed liquor temperature of timing or in real time detection outdoor heat exchange device.First pass through inspection
Survey the temperature of total feed tube of outdoor heat exchange device, determine whether outdoor heat exchanger frosting (
During because outdoor heat exchange device has outdoor heat exchanger frosting, the heat exchange that outdoor heat exchange device is overall
Effect is just deteriorated, so that the feed liquor temperature of total feed tube can be the highest, more than not having
Feed liquor temperature during outdoor heat exchanger frosting), without frosting, the most do not detect outdoor heat exchange
The coil temperature of device, does not results in and goes to change outdoor in the case of outdoor heat exchanger does not all have frosting
The coil temperature of hot device detects one by one, it is to avoid a large amount of unnecessary detections, improves the effect of detection
Rate.
When feed liquor temperature is less than or equal to the second preset temperature threshold values, if detection outdoor heat exchange device
Feed liquor temperature is detection in real time, then continue to run with step S106, if detection outdoor heat exchange device
Feed liquor temperature is timing detection, then directly terminate without operation, waits that next time, timing detection instruction was arrived
Reach, then perform step S106.The present embodiment is fixed with the feed liquor temperature of detection outdoor heat exchange device
Time detection as a example by.
Concrete, in step S103, it is concrete that the outdoor heat exchanger of control current detection carries out defrosting operation
For: control the first closed electromagnetic valve and the second of correspondence that the outdoor heat exchanger of current detection is corresponding
Electromagnetic valve is opened, and cross valve keeps "on" position when heating.The outdoor heat exchanger of current detection
Second electromagnetic valve of the first corresponding closed electromagnetic valve and its correspondence is opened, i.e. the room of current detection
External heat exchanger is switched to reversely transport
OK, refrigeration defrosting operation is run.
Further, in the present embodiment, preferred preset order is order from top to bottom.Examine from top to bottom
Survey the coil temperature of outdoor heat exchanger, outdoor heat exchanger above can be made when defrosting, melt
After frost formed current drop onto on the outdoor heat exchanger below this outdoor heat exchanger, dissolve following
Outdoor heat exchanger on the part of frost layer so that outdoor heat exchanger below is defrosting
Time, required time is shorter, improves defrosting efficiency.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention
, every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion
, or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the present invention's
In scope of patent protection.
Claims (8)
1. the outdoor heat exchange device of an air conditioning system, it is characterised in that include for connecting described air-conditioning
Total escape pipe of the cross valve of system, for connecting always entering of the throttle part liquid outlet of described air conditioning system
Liquid pipe, multiple outdoor heat exchanger, multiple first electromagnetic valve and multiple second electromagnetic valve, described first electromagnetism
Valve and described outdoor heat exchanger one_to_one corresponding, described second electromagnetic valve and described outdoor heat exchanger one_to_one corresponding；
The escape pipe of described outdoor heat exchanger connects one end and its correspondence second of the first electromagnetic valve of its correspondence respectively
One end of electromagnetic valve, the other end of described first electromagnetic valve connects described total escape pipe, described second electromagnetism
The other end of valve is for connecting the exhaustor of the compressor of described air conditioning system；Entering of each outdoor heat exchanger
Liquid pipe is interconnected and connects with described total feed tube；Described outdoor heat exchange device also includes controller and sets
On described total feed tube, for detecting the second temperature sensor of described outdoor heat exchange device feed liquor temperature,
Described second temperature sensor electrically connects with described controller；The coil pipe of described outdoor heat exchanger is provided with use
In the first temperature sensor of its coil temperature of detection, described first temperature sensor and described controller electricity
Connect；Described controller described feed liquor temperature more than the second preset temperature threshold values time, by preset order by
The coil temperature of individual sensing chamber external heat exchanger.
Outdoor heat exchange device the most according to claim 1, it is characterised in that each outdoor heat exchanger
Mutually it is oppositely arranged in upper-lower position.
Outdoor heat exchange device the most according to claim 1, it is characterised in that described first electromagnetic valve
For normally open solenoid valve, described second electromagnetic valve is normally closed solenoid valve.
4. according to the outdoor heat exchange device described in Claims 2 or 3, it is characterised in that described controller
Electrically connect with described first electromagnetic valve and described second electromagnetic valve respectively.
5. a Defrost method based on the outdoor heat exchange device described in any one of claim 1-4, it is special
Levy and be, including step:
Detect the feed liquor temperature of total feed tube of described outdoor heat exchange device；
When described feed liquor temperature is more than the second preset temperature threshold values, by preset order one by one to outdoor heat exchange
The coil temperature of device detects；
When the coil temperature of currently detected outdoor heat exchanger is less than the first preset temperature threshold values, control
The outdoor heat exchanger of current detection carries out defrosting operation；
Judge that the outdoor heat exchanger defrosting operation of described current detection completes the most；
If current outdoor heat exchanger defrosting operation is not fully complete, then the outdoor continuing to control described current detection is changed
Hot device carries out defrosting operation；
If the outdoor heat exchanger defrosting operation of described current detection completes, then judge whether to complete institute
The detection of the coil temperature of some outdoor heat exchangers；
If being not fully complete the detection of the coil temperature to all of outdoor heat exchanger, then continue by preset order by
The coil temperature of the individual outdoor heat exchanger to not detecting detects；
If having completed the detection of the coil temperature to all of outdoor heat exchanger, then exit defrosting detection.
Defrost method the most according to claim 5, it is characterised in that the described current inspection of described judgement
Survey the most completed step of outdoor heat exchanger defrosting operation particularly as follows:
Judge that the coil temperature of the outdoor heat exchanger of described current detection is whether first pre-more than or equal to described
If threshold temperature.
7. according to the Defrost method described in claim 5 or 6, it is characterised in that work as described in described control
The outdoor heat exchanger of front detection carry out defrosting operation step particularly as follows:
Control the second electricity of the first closed electromagnetic valve corresponding to the outdoor heat exchanger of described current detection and correspondence
Magnet valve is opened, and cross valve keeps "on" position when heating.
Defrost method the most according to claim 7, it is characterised in that described preset order is from upper
Order down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310303523.9A CN103411340B (en) | 2013-07-18 | 2013-07-18 | Outdoor heat exchange device and Defrost method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310303523.9A CN103411340B (en) | 2013-07-18 | 2013-07-18 | Outdoor heat exchange device and Defrost method thereof |
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| CN103411340A CN103411340A (en) | 2013-11-27 |
| CN103411340B true CN103411340B (en) | 2016-09-21 |
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| CN106288482B (en) * | 2015-05-19 | 2019-03-12 | Tcl空调器(中山)有限公司 | Air conditioner |
| CN105222436A (en) * | 2015-09-21 | 2016-01-06 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN105352035B (en) * | 2015-11-12 | 2019-07-12 | Tcl空调器(中山)有限公司 | Air conditioner and air conditioner defrosting control method |
| CN105509403B (en) * | 2016-02-02 | 2017-10-31 | 中国建筑科学研究院 | Indoor environment control unit and building environment control system |
| CN107575998A (en) * | 2017-09-08 | 2018-01-12 | 青岛海尔空调器有限总公司 | The defrosting control method of air-conditioning and its outdoor unit |
| CN109798600A (en) * | 2019-03-20 | 2019-05-24 | 珠海格力电器股份有限公司 | The control method of heat pump system, air-conditioning, outdoor unit and outdoor unit |
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| CN113063212A (en) * | 2019-12-31 | 2021-07-02 | 青岛海尔空调器有限总公司 | Air conditioner and method and device for defrosting control of air conditioner |
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