CN108731352A - A kind of air-conditioner defrosting structure and air-conditioning system - Google Patents
A kind of air-conditioner defrosting structure and air-conditioning system Download PDFInfo
- Publication number
- CN108731352A CN108731352A CN201810792527.0A CN201810792527A CN108731352A CN 108731352 A CN108731352 A CN 108731352A CN 201810792527 A CN201810792527 A CN 201810792527A CN 108731352 A CN108731352 A CN 108731352A
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- Prior art keywords
- air
- heat exchanger
- bypass branch
- port
- lateral
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Links
- 238000010257 thawing Methods 0.000 title claims abstract description 53
- 238000004378 air conditioning Methods 0.000 title claims abstract description 22
- 239000003507 refrigerant Substances 0.000 abstract description 21
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 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
- 230000009466 transformation 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
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
Abstract
The invention discloses a kind of air-conditioner defrosting structure and air-conditioning systems, wherein air-conditioner defrosting structure includes：The first lateral and second branched pipe road being connected in parallel between major loop connecting tube and outdoor heat exchanger, and the first bypass branch being additionally arranged, when the first bypass branch is in connected state, first lateral is off, and first bypass branch is for receiving the high pressure gaseous refrigerant being diverted by the 4th port connecting tube.Air-conditioner defrosting structure provided by the present invention; so that air-conditioning system is when being defrosted; high pressure gaseous refrigerant is received using the first bypass branch in connected state; so that the heat exchanger of outdoor heat exchanger windward side defrosts rapidly; and by the heat exchanger of fin heat conduction to leeward side, defrosting is not shut down to carry out outdoor heat exchanger, is not necessarily to inverse defrosting; solves the problem of must using inverse defrosting technology that could remove frost layer, lead to fluctuations in indoor temperature in the prior art.
Description
Technical field
The present invention relates to cooling/heating equipment technical field more particularly to a kind of air-conditioner defrosting structures and air-conditioning system.
Background technology
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, it will produce frost layer, subsequent refrigeration system
Low pressure is lower, and then aggravates frosting degree, decays so as to cause heating effect.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.
Invention content
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of air-conditioner defrosting structure and air-conditioning systems
System, it is intended to which solving the problem of must use inverse defrosting technology that could remove frost layer in the prior art leads to fluctuations in indoor temperature.
Technical scheme is as follows：
A kind of air-conditioner defrosting structure, including：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, the
Three ports are connected with the muffler of compressor, and the 4th port is connected by the 4th port connecting tube with indoor heat exchanger, institute
Outdoor heat exchanger is stated with indoor heat exchanger to be connected by major loop connecting tube；Wherein, the major loop connecting tube is changed with outdoor
The first lateral being in parallel and second branched pipe road are provided between hot device, 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 invention, uses and is connected in parallel on major loop connecting tube and room
The first lateral between external heat exchanger and second branched pipe road, and the first bypass branch for being additionally arranged, the 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 port
The high pressure gaseous refrigerant that connecting tube is diverted.Air-conditioner defrosting structure provided by the present invention so that air-conditioning system into
When row defrosting, high pressure gaseous refrigerant is received using the first bypass branch in connected state so that outdoor heat exchanger
The heat exchanger of windward side defrosts rapidly, and by the heat exchanger of fin heat conduction to leeward side, does not stop to carry out outdoor heat exchanger
Machine defrosts, and is not necessarily to inverse defrosting, and solving must use inverse defrosting technology that could remove frost layer in the prior art, lead to interior
The problem of temperature fluctuation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the first preferred embodiment of air-conditioning defrosting structure in the present invention.
Fig. 2 is the structural schematic diagram of the second preferred embodiment of air-conditioning defrosting structure in the present invention.
Fig. 3 is the structural schematic diagram of air-conditioning defrosting structure third preferred embodiment in the present invention.
Fig. 4 is the structural schematic diagram of the 4th preferred embodiment of air-conditioning defrosting structure in the present invention.
Specific implementation mode
A kind of air-conditioner defrosting structure of present invention offer and air-conditioning system, to make the purpose of the present invention, technical solution and effect
It is clearer, clear, referring to the drawings and give an actual example that the present invention is described in more detail.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
In the first preferred embodiment of the invention, as shown in Figure 1, the air-conditioner defrosting structure includes：Compressor 1, it is described
Compressor 1 is connected with four-way valve 2, and there are four ports for the setting of the four-way valve 2, wherein first port is for connect compressor 1
Exhaust pipe, second port are connected with outdoor heat exchanger 3, and third port is used for the muffler of connect compressor 1, and the 4th port passes through
4th port connecting tube is connected with indoor heat exchanger 7, and the indoor heat exchanger 7 is connect with outdoor heat exchanger 3 by major loop
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 is：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 is：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 present invention is additionally provided with the first lateral and second branched pipe road, first branched pipe
Road 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 is in parallel
There are the first bypass branch 8, first bypass branch 8 to be connected between the first lateral and the 4th port connecting tube, i.e.,
Pipeline one end on one bypass branch 8 is connected with the first lateral, and the other end is connected with the 4th port connecting tube, described
First bypass branch 8 and the first lateral can all switch between being connected to and disconnecting two states, and the two can be in even through and off
Opening switching between two states, to refer to the first bypass branch 8 and the first lateral can all be connected to condenser 3, can also disconnect with it is cold
The connected relation of condenser 3, in the present invention, both why control can free switching state, be to switch refrigerant circulation
Flow direction.
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 carry out state switching by the first two-port valve 41 and the second two-port valve 42 respectively.
It is preferred that air-conditioning system is under heating condition, be switched on just section, and the first two-port valve 41 is in open state, and the
Two two-port valves 42 are closed, 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 is：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（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 principles are identical）, at this point, a points to c point flow paths are connected, b points are obstructed to c point flow paths, the circulation route of refrigerant is：Compression
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, in the 4th port connecting tube punishment
Stream, first part flow to outdoor heat exchanger 3 through major loop connecting tube, second branched pipe road successively, 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 of 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 heat exchanger of fin heat conduction to leeward side, does not stop to carry out outdoor heat exchanger
Machine defrosts.During entire defrosting, b points are to turn on to d points, 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, ensure indoor heat exchanger 7 have always high temperature and high pressure gas state refrigerant inflow, continue to
Indoor quantity of heat given up.
It detects outdoor heat exchanger 3 and needs the method for entering defrosting, 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 invention, as shown in Fig. 2, the air-conditioner defrosting structure and the first preferred embodiment
It is no longer realized by two two-port valves the difference is that the switching of the first bypass branch 8 and the first lateral uses, but
It is realized using the first triple valve 51, first triple valve 51 is arranged in the first bypass branch 8 and the first lateral junction.
In third preferred embodiment of the present invention, as shown in figure 3, the air-conditioner defrosting structure removes the first preferred embodiment institute
Outside disclosed structure, it is additionally provided with the second bypass branch 9, second bypass branch 9 is connected to second branched pipe road and the 4th
Between the connecting tube of port, second bypass branch 9 and second branched pipe road can all be cut between being connected to and disconnecting two states
It changes, 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, the 4th two-port valve 44 is provided on second bypass branch 9.
It is preferred that under heating condition, the first section of air-conditioning system booting, the first two-port valve 41 and third two-port valve 43 are in
Open state, and the second two-port valve 42 and the 4th two-port valve 44 are closed, 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 points are obstructed to c point flow paths, a points are obstructed to d point flow paths, and b points are connected to c points and b points to d point flow paths.
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 is closed（Third two-port valve 43 is closed still in open state, the 4th two-port valve 44）, pass through first
Bypass branch 8 flows into the refrigerant of a part of high temperature and high pressure gas state of system so that i.e. the heat exchanger of 3 windward side of outdoor heat exchanger
Rapid defrosting（The refrigerant of the first lateral radiates in windward side heat exchanger at this time）, and changing by fin heat conduction to leeward side
Hot device does not shut down defrosting to carry out outdoor heat exchanger, and at the same time, the refrigerant in second branched pipe road still exchanges heat in leeward side
Device absorbs heat, and ensures that air-conditioning system normally heats；And works as and detect that the defrosting of the heat exchanger of leeward side can not be done by depending merely on fin heat conduction
When net, switching defrosting flow path：It reopens the first two-port valve 41 and closes 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 the back of the body
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 invention, as shown in figure 4, the air-conditioner defrosting structure working principle and third are preferable
Embodiment is identical, unlike, the first lateral, the first bypass branch 8, second branched pipe road and the second bypass branch 9
State switches, and 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, and
It is the break-make of the first lateral and the first bypass branch 8 to be controlled by the first triple valve 51, and control by the second triple valve 52
The break-make in second branched pipe road processed and the second bypass branch 9.
Understandable to be, in addition to third preferred embodiment and the 4th preferred embodiment, also other embodiment is replaceable
It uses：For example switch 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 present invention also provides a kind of air-conditioning system, the air-conditioning system includes air-conditioner defrosting structure as described above.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (10)
1. a kind of air-conditioner defrosting structure, including：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, the
Three ports are connected with the muffler of compressor, and the 4th port is connected by the 4th port connecting tube with indoor heat exchanger, institute
Outdoor heat exchanger is stated with indoor heat exchanger to be connected by major loop connecting tube；It is characterized in that, the major loop connecting tube with
The first lateral being in parallel and second branched pipe road are provided between outdoor heat exchanger, the air-conditioner defrosting structure is also set up
There are the first bypass branch, first bypass branch to be connected between the first lateral and the 4th port connecting tube.
2. air-conditioner defrosting structure according to claim 1, which is characterized in that be provided with first on first lateral
Two-port valve is provided with the second two-port valve on first bypass branch.
3. air-conditioner defrosting structure according to claim 1, which is characterized in that first lateral and the first bypass branch
The junction on road is provided with the first triple valve.
4. air-conditioner defrosting structure according to claim 1, which is characterized in that the air-conditioner defrosting structure is additionally provided with second
Bypass branch, second bypass branch are connected between second branched pipe road and the 4th port connecting tube.
5. air-conditioner defrosting structure according to claim 4, which is characterized in that first bypass branch and the second bypass branch
Road is connected to the 4th port connecting tube by same pipeline.
6. air-conditioner defrosting structure according to claim 4, which is characterized in that be provided with first on first lateral
Two-port valve is provided with the second two-port valve on first bypass branch.
7. air-conditioner defrosting structure according to claim 4, which is characterized in that first lateral and the first bypass branch
The junction on road is provided with the first triple valve.
8. the air-conditioner defrosting structure described according to claim 6 or 7, which is characterized in that be provided on the second branched pipe road
Third two-port valve is provided with the 4th two-port valve on second bypass branch.
9. the air-conditioner defrosting structure described according to claim 6 or 7, which is characterized in that second branched pipe road and the second bypass branch
The junction on road is provided with the second triple valve.
10. a kind of air-conditioning system, which is characterized in that the air-conditioning system includes as in one of claimed in any of claims 1 to 9
Air-conditioner defrosting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792527.0A CN108731352A (en) | 2018-07-18 | 2018-07-18 | A kind of air-conditioner defrosting structure and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792527.0A CN108731352A (en) | 2018-07-18 | 2018-07-18 | A kind of air-conditioner defrosting structure and air-conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN108731352A true CN108731352A (en) | 2018-11-02 |
Family
ID=63926625
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810792527.0A Pending CN108731352A (en) | 2018-07-18 | 2018-07-18 | 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 |
|---|---|---|---|---|
| CN113357843A (en) * | 2020-03-04 | 2021-09-07 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002188873A (en) * | 2000-12-20 | 2002-07-05 | Fujitsu General Ltd | Refrigerating equipment of air conditioner |
| CN101382351A (en) * | 2008-10-21 | 2009-03-11 | 中南大学 | Air source heat pump air conditioner and defrosting method thereof |
| CN201311141Y (en) * | 2008-12-12 | 2009-09-16 | 广东志高空调有限公司 | Air conditioner for heat pump defrosting |
| CN105627432A (en) * | 2015-12-25 | 2016-06-01 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN208620689U (en) * | 2018-07-18 | 2019-03-19 | Tcl空调器(中山)有限公司 | A kind of air-conditioner defrosting structure and air-conditioning system |
-
2018
- 2018-07-18 CN CN201810792527.0A patent/CN108731352A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002188873A (en) * | 2000-12-20 | 2002-07-05 | Fujitsu General Ltd | Refrigerating equipment of air conditioner |
| CN101382351A (en) * | 2008-10-21 | 2009-03-11 | 中南大学 | Air source heat pump air conditioner and defrosting method thereof |
| CN201311141Y (en) * | 2008-12-12 | 2009-09-16 | 广东志高空调有限公司 | Air conditioner for heat pump defrosting |
| CN105627432A (en) * | 2015-12-25 | 2016-06-01 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN208620689U (en) * | 2018-07-18 | 2019-03-19 | Tcl空调器(中山)有限公司 | A kind of air-conditioner defrosting structure and air-conditioning system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357843A (en) * | 2020-03-04 | 2021-09-07 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method thereof |
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