CN208620689U - A kind of air conditioning defrosting structure and air conditioning system - Google Patents
A kind of air conditioning defrosting structure and air conditioning system Download PDFInfo
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- CN208620689U CN208620689U CN201821138564.1U CN201821138564U CN208620689U CN 208620689 U CN208620689 U CN 208620689U CN 201821138564 U CN201821138564 U CN 201821138564U CN 208620689 U CN208620689 U CN 208620689U
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- bypass branch
- air conditioner
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- 238000010257 thawing Methods 0.000 title claims abstract description 54
- 238000004378 air conditioning Methods 0.000 title claims abstract description 24
- 239000003507 refrigerant Substances 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model discloses an air conditioner defrosting structure and air conditioning system, wherein, air conditioner defrosting structure includes: the first branch pipeline and the second branch pipeline are connected between the main loop connecting pipe and the outdoor heat exchanger in parallel, and a first bypass branch is additionally arranged, when the first bypass branch is in a connected state, the first branch pipeline is in a disconnected state, and the first bypass branch is used for receiving high-temperature and high-pressure gaseous refrigerants which are branched out from the fourth port connecting pipe. The utility model provides an air conditioner defrosting structure for air conditioning system is when defrosting, and the usable first bypass branch road that is in the feed through state receives high temperature high pressure gaseous state refrigerant, makes the heat exchanger of outdoor heat exchanger windward side defrost rapidly, and heat conduction to the heat exchanger of leeward side through the fin, thereby carries out the defrosting of outdoor heat exchanger not shutting down, need not reverse defrosting, has solved and must adopt reverse defrosting technique among the prior art and just can get rid of the frost layer, leads to the undulant problem of indoor temperature.
Description
Technical field
The utility model relates to cooling/heating equipment technical field more particularly to a kind of air-conditioner defrosting structure and air-conditionings
System.
Background technique
Air source heat pump air-conditioner operation uses electric energy, does not have any pollution and waste in operation, it can be achieved that refrigeration, floor
Heating and supply domestic hot-water, realize a tractor serves several purposes.But under heating condition, heating performance can be with the reduction of environment temperature
And decay, it is especially low in outdoor temperature and when with running under certain humidity condition, frost layer, subsequent refrigeration system can be generated
Low pressure is lower, and then aggravates frosting degree, so as to cause heating effect decaying.General domestic air conditioning is run in this case
60min or so just needs to enter defrosting, mostly uses inverse defrosting technology at present, in inverse defrosting, needs to switch loop direction,
And this will lead to fluctuations in indoor temperature, influence comfort.
As it can be seen that the existing technology needs to be improved and developed.
Utility model content
In view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of air-conditioner defrosting structure and air-conditionings
System, it is intended to solve that frost layer must could be removed using inverse defrosting technology in the prior art, lead to asking for fluctuations in indoor temperature
Topic.
The technical solution of the utility model is as follows:
A kind of air-conditioner defrosting structure, comprising: compressor, four-way valve, outdoor heat exchanger and indoor heat exchanger；
The first port of the four-way valve is connected with the exhaust pipe of compressor, and second port is connected with outdoor heat exchanger
It connects, third port is connected with the muffler of compressor, and the 4th port is connected by the 4th port connecting tube with indoor heat exchanger
It connects, the outdoor heat exchanger is connected with indoor heat exchanger by major loop connecting tube；Wherein, the major loop connecting tube and room
The first lateral and second branched pipe road being in parallel are provided between external heat exchanger, the air-conditioner defrosting structure is additionally provided with
First bypass branch, first bypass branch are connected between the first lateral and the 4th port connecting tube.
In further preferred embodiment, the first two-port valve, first bypass are provided on first lateral
Branch road is provided with the second two-port valve.
In further preferred embodiment, the junction of first lateral and the first bypass branch is provided with first
Triple valve.
In further preferred embodiment, the air-conditioner defrosting structure is additionally provided with the second bypass branch, by the of described second
Logical branch is connected between second branched pipe road and the 4th port connecting tube.
In further preferred embodiment, first bypass branch is connected to the second bypass branch by same pipeline
4th port connecting tube.
In further preferred embodiment, the first two-port valve, first bypass are provided on first lateral
Branch road is provided with the second two-port valve.
In further preferred embodiment, the junction of first lateral and the first bypass branch is provided with first
Triple valve.
In further preferred embodiment, third two-port valve, second bypass are provided on the second branched pipe road
Branch road is provided with the 4th two-port valve.
In further preferred embodiment, the junction of second branched pipe road and the second bypass branch is provided with the second threeway
Valve.
A kind of air-conditioning system, the air-conditioning system include air-conditioner defrosting structure as described above.
Compared with prior art, air-conditioner defrosting structure provided by the utility model, using being connected in parallel on major loop connecting tube
The first lateral and second branched pipe road between outdoor heat exchanger, and the first bypass branch being additionally arranged, first
Bypass branch is connected between the first lateral and the 4th port connecting tube, and first bypass branch is for receiving by the 4th
The high pressure gaseous refrigerant that port connecting tube is diverted.Air-conditioner defrosting structure provided by the utility model, so that air-conditioning
System receives high pressure gaseous refrigerant when being defrosted, using the first bypass branch in connected state, so that room
The heat exchanger of external heat exchanger windward side defrosts rapidly, and by the thermally conductive heat exchanger to leeward side of fin, changes to carry out outdoor
Hot device does not shut down defrosting, is not necessarily to inverse defrosting, and frost layer must could be removed using inverse defrosting technology in the prior art by solving,
The problem of leading to fluctuations in indoor temperature.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first preferred embodiment of air-conditioning defrosting structure in the utility model.
Fig. 2 is the structural schematic diagram of the second preferred embodiment of air-conditioning defrosting structure in the utility model.
Fig. 3 is the structural schematic diagram of air-conditioning defrosting structure third preferred embodiment in the utility model.
Fig. 4 is the structural schematic diagram of the 4th preferred embodiment of air-conditioning defrosting structure in the utility model.
Specific embodiment
The utility model provides a kind of air-conditioner defrosting structure and air-conditioning system, to make the purpose of this utility model, technical side
Case and effect are clearer, clear, referring to the drawings and give an actual example to the utility model further description.It should manage
Solution, specific embodiment described herein are only used to explain the utility model, are not used to limit the utility model.
In the first preferred embodiment of the utility model, as shown in Figure 1, the air-conditioner defrosting structure includes: compressor 1,
The compressor 1 is connected with four-way valve 2, and there are four ports for the setting of four-way valve 2, wherein first port is for connecting compression
The exhaust pipe of machine 1, second port are connected with outdoor heat exchanger 3, and third port is used for the muffler of connect compressor 1, the 4th end
Mouth is connected with indoor heat exchanger 7 by the 4th port connecting tube, and the indoor heat exchanger 7 and outdoor heat exchanger 3 are by leading back
Connecting pipe is connected；It is preferred that being provided with throttling set 6 in the major loop connecting tube.
Under cooling condition, the circulation route of refrigerant are as follows: 1 exhaust pipe of compressor, 2 first port of four-way valve, four-way valve 2
Two-port netwerk, outdoor heat exchanger 3, indoor heat exchanger 7, the 4th port of four-way valve 2,2 third port of four-way valve, 1 muffler of compressor.
Under heating condition, the circulation route of refrigerant are as follows: 1 exhaust pipe of compressor, 2 first port of four-way valve, four-way valve 2
Four ports, indoor heat exchanger 7, outdoor heat exchanger 3,2 second port of four-way valve, 2 third port of four-way valve, 1 muffler of compressor.
In addition to above structure, the utility model is additionally provided with the first lateral and second branched pipe road, and described first point
Branch pipe(tube) and second branched pipe road are arranged in parallel between major loop connecting tube and outdoor heat exchanger 3.The major loop of refrigerant circulation
It is parallel with the first bypass branch 8, first bypass branch 8 is connected between the first lateral and the 4th port connecting tube,
That is pipeline one end on the first bypass branch 8 is connected with the first lateral, and the other end is connected with the 4th port connecting tube,
First bypass branch 8 and the first lateral can all switch being connected to and disconnecting between two states, and the two can be connected to
Refer to that the first bypass branch 8 and the first lateral can all be connected to condenser 3 with switching between two states is disconnected, can also disconnect
With the connected relation of condenser 3, in the present invention, both why control can free switching state, be cold in order to switch
The flow direction of matchmaker's circulation.
It is preferred that the first two-port valve 41 is provided on first lateral, and the first bypass branch 8 is provided with the two or two
Port valve 42, the two pass through the 42 carry out state switching of the first two-port valve 41 and the second two-port valve respectively.
The just section it is preferred that air-conditioning system under heating condition, is switched on, the first two-port valve 41 is in the open state, and the
Two two-port valves 42 are in close state, at this point, the first lateral is in connected state, and the first bypass branch 8 is in and disconnects
State.At this point, the circulation route of refrigerant are as follows: 1 exhaust pipe of compressor, 2 first port of four-way valve, the 4th port of four-way valve 2, interior
Heat exchanger 7, major loop connecting tube, punish in major loop connecting tube and flow, and first part enters outdoor heat exchange through the first lateral
Device 3, second part enter outdoor heat exchanger 3 through second branched pipe road, and two parts refrigerant to converge in outdoor heat exchanger 3 is through
Two-port netwerk connecting tube flows to 2 second port of four-way valve, and (second port connecting tube is outdoor heat exchanger 3 and 2 second end of four-way valve
Connecting pipe between mouthful), 1 muffler of compressor is finally flowed to by 2 third port of four-way valve, one is formed and completely follows
Ring.
And when 3 frosting of outdoor heat exchanger is defrosted to a certain extent, the first two-port valve 41 closing while second
Two-port valve 42 is opened, and the first lateral switches to off-state, and the first bypass branch 8 switches to connected state.It please refers to
Fig. 1 (Fig. 2 principle is identical), at this point, a point to c point flow path connect, b point to c point flow path obstructed, the circulation route of refrigerant are as follows: compress
1 exhaust pipe of machine, 2 first port of four-way valve, the 4th port of four-way valve 2, the 4th port connecting tube are punished in the 4th port connecting tube
Stream, first part successively flow to outdoor heat exchanger 3 through major loop connecting tube, second branched pipe road, and second part is through by first
Logical branch 8 flows to outdoor heat exchanger 3, and two parts refrigerant to converge in outdoor heat exchanger 3 is flowed through second port connecting tube
To 2 second port of four-way valve, 1 muffler of compressor is finally flowed to by 2 third port of four-way valve, one is formed and completely follows
Ring.
The refrigerant that a part of high temperature and high pressure gas state of system is flowed by the first bypass branch 8, so that outdoor heat exchanger 3
The heat exchanger of windward side defrosts rapidly, and by the thermally conductive heat exchanger to leeward side of fin, does not stop to carry out outdoor heat exchanger
Machine defrosting.During entire defrosting, b point is to turn on to d point, and it is to continue to evaporate as evaporator that outdoor heat exchanger, which has a row,
Heat absorption, maintain system high-low pressure pressure difference, guarantee indoor heat exchanger 7 have always high temperature and high pressure gas state refrigerant inflow, continue to
Indoor quantity of heat given up.
The method that outdoor heat exchanger 3 needs to enter defrosting is detected, including but not limited to: method one passes through sensing chamber's external disk
Tube temperature degree or indoor coil pipe, or simultaneously inside and outside sensing chamber coil temperature variation；Method two passes through sensing chamber's exogenous wind
The variation of electromechanics stream.
In the second preferred embodiment of the utility model, as shown in Fig. 2, the air-conditioner defrosting structure is preferably implemented with first
Example the difference is that, the switching of the first bypass branch 8 and the first lateral using no longer by two two-port valves realizations,
But the first triple valve 51 is used to realize, the setting of the first triple valve 51 connects in the first bypass branch 8 and the first lateral
Meet place.
In the utility model third preferred embodiment, as shown in figure 3, the air-conditioner defrosting structure is preferably implemented except first
Outside structure disclosed in example, be additionally provided with the second bypass branch 9, second bypass branch 9 be connected to second branched pipe road with
Between 4th port connecting tube, second bypass branch 9 and second branched pipe road all can connection with disconnect two states it
Between switch, second bypass branch 9 is for receiving the high pressure gaseous refrigerant being diverted by the 4th port connecting tube.
In this embodiment, the first bypass branch 8 and the first lateral not only can be switched in the air-conditioner defrosting structure
It uses, the use of also changeable first lateral and second branched pipe road, and the handoff procedure, it will be along with the first bypass branch
The switching on road 8 and the second bypass branch 9.
In the specific implementation, first bypass branch 8 is in parallel with the second bypass branch 9.First lateral
On be provided with the first two-port valve 41, the second two-port valve 42 is provided on first bypass branch 8, on the second branched pipe road
It is provided with third two-port valve 43, is provided with the 4th two-port valve 44 on second bypass branch 9.
It is preferred that the first section of air-conditioning system booting, the first two-port valve 41 and third two-port valve 43 are under heating condition
Open state, and the second two-port valve 42 and the 4th two-port valve 44 are in close state, that is to say, that refrigerant is used only and leads back at this time
Road is recycled, and can be shunted at the first lateral and second branched pipe road, is converged in outdoor heat exchanger 3；
At this point, a point is obstructed to c point flow path, a point is obstructed to d point flow path, and b point is connected to c point and b point to d point flow path.
When detecting that 3 frosting of outdoor heat exchanger needs to enter defrosting to a certain extent, the second two-port valve 42 is opened and the
One two-port valve 41 closes (third two-port valve 43 is in close state still in open state, the 4th two-port valve 44), passes through first
Bypass branch 8 flows into the refrigerant of a part of high temperature and high pressure gas state of system, so that the heat exchanger of i.e. 3 windward side of outdoor heat exchanger
Defrosting (refrigerant of the first lateral radiates in windward side heat exchanger at this time) rapidly, and pass through thermally conductive the changing to leeward side of fin
Hot device, so that carrying out outdoor heat exchanger does not shut down defrosting, at the same time, the refrigerant in second branched pipe road still exchanges heat in leeward side
Device heat absorption guarantees that air-conditioning system normally heats；And works as and detect that depending merely on the thermally conductive heat exchanger of leeward side can not defrost of fin does
When net, switching defrosting flow path: reopen the first two-port valve 41 and close the second two-port valve 42, and close third two-port valve 43 and beat
The 4th two-port valve 44 is opened, switching uses the first lateral and the second bypass branch 9, high-temperature high-pressure state refrigerant is introduced into back
Wind side is defrosted, and refrigerant radiates in leeward side heat exchanger at this time, is absorbed heat in windward side heat exchanger, is maintained system high-low pressure pressure
Difference.
In the 4th preferred embodiment of the utility model, as shown in figure 4, the air-conditioner defrosting structure working principle and third
Preferred embodiment is identical, unlike, the first lateral, the first bypass branch 8, second branched pipe road and the second bypass branch
9 state switching, is no longer carried out by the first two-port valve 41, the second two-port valve 42, third two-port valve 43 and the 4th two-port valve 44,
But the on-off of the first lateral and the first bypass branch 8 is controlled by the first triple valve 51, and pass through the second triple valve 52
Control the on-off of second branched pipe road and the second bypass branch 9.
Understandable to be, in addition to third preferred embodiment and the 4th preferred embodiment, it is replaceable that there are also other embodiments
It uses: such as switching the use of the first lateral and the first bypass branch 8 by the first two-port valve 41 and the second two-port valve 42,
And switch the use of second branched pipe road and the second bypass branch 9 by the second triple valve 52；Or pass through the first triple valve 51
Switch the use of the first lateral and the first bypass branch 8, and passes through third two-port valve 43 and the switching of the 4th two-port valve 44 the
The use of two laterals and the second bypass branch 9.
The utility model additionally provides a kind of air-conditioning system, and the air-conditioning system includes air-conditioner defrosting knot as described above
Structure.
It should be understood that the application of the utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
It says, it can be modified or changed according to the above description, and all these modifications and variations all should belong to the appended power of the utility model
The protection scope that benefit requires.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138564.1U CN208620689U (en) | 2018-07-18 | 2018-07-18 | A kind of air conditioning defrosting structure and air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138564.1U CN208620689U (en) | 2018-07-18 | 2018-07-18 | A kind of air conditioning defrosting structure and air conditioning system |
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| Publication Number | Publication Date |
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| CN208620689U true CN208620689U (en) | 2019-03-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731352A (en) * | 2018-07-18 | 2018-11-02 | Tcl空调器(中山)有限公司 | A kind of air-conditioner defrosting structure and air-conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731352A (en) * | 2018-07-18 | 2018-11-02 | Tcl空调器(中山)有限公司 | A kind of air-conditioner defrosting structure and air-conditioning system |
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