CN109579383A - A kind of air-conditioning system with outdoor unit antifrost function - Google Patents
A kind of air-conditioning system with outdoor unit antifrost function Download PDFInfo
- Publication number
- CN109579383A CN109579383A CN201811504303.1A CN201811504303A CN109579383A CN 109579383 A CN109579383 A CN 109579383A CN 201811504303 A CN201811504303 A CN 201811504303A CN 109579383 A CN109579383 A CN 109579383A
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- Prior art keywords
- temperature
- heat exchanger
- value
- air
- conditioning system
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Classifications
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- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
It include the refrigerant heat-exchanging loop being made of compressor, outdoor heat exchanger and indoor heat exchanger the invention discloses a kind of air-conditioning system with outdoor unit antifrost function；It further include having heating branch；Described heating branch one end is connected to the refrigerant output end of the compressor, and the other end is connected to the refrigerant input terminal of the outdoor heat exchanger, to improve the refrigerant temperature and pressure into the outdoor heat exchanger.
Description
Technical field
The present invention relates to air-conditioning system technical fields, more particularly, to a kind of air-conditioning system with outdoor unit antifrost function
System.
Background technique
In the heating operations of air-conditioning system, air-conditioner outdoor unit frosting is always that the technology paid close attention to and studied in industry is asked
Topic, is especially that outdoor temperature is lower in northern winter, and outdoor unit is continued for the water in low-temperature condition, air in room
The phenomenon that heat exchanger surface of outer machine condenses, and causes frosting；And the frosting of outdoor heat exchanger can block the channel between fin, pole
The earth influences heat transfer effect, substantially reduces the ability of heating；And existing Defrost technology is generally the commutation for passing through four-way valve
It realizes, i.e., air-conditioning does not heat during defrosting, if defrosting time is too long, can cause large effect to indoor comfort；
And the existing Defrost technology that do not commutate, such as phase-transition heat-storage defrosting, vibration of ultrasonic wave defrosting, higher cost.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of simple and ingenious structure, antifrost effect is good
The air-conditioning system with outdoor unit antifrost function.
To achieve the above object, scheme provided by the invention are as follows: a kind of air-conditioning system with outdoor unit antifrost function,
It include the refrigerant heat-exchanging loop being made of compressor, outdoor heat exchanger and indoor heat exchanger；It further include having heating branch；Institute
The refrigerant output end that heating branch one end is connected to the compressor is stated, the other end is connected to the refrigerant of the outdoor heat exchanger
Input terminal, to improve the refrigerant temperature and pressure into the outdoor heat exchanger.
It further, further include having the flow control valve for being set to the heating branch road, being set to the outdoor heat exchanger
On temperature sensor and control module, wherein the temperature of outdoor heat exchanger described in the temperature sensor real-time detection is believed
Number it is sent to the control module, to control the aperture of the flow control valve by the control module.
Further, when the temperature T0 that the temperature sensor detects is less than the first preset temperature value T1, the flow
Control valve is opened and aperture is the first preset value P1；After flow control valve unlatching, when the temperature sensor detects
Temperature T0 rise to more than or equal to the first preset temperature value T1 and when less than the second preset temperature value T2, the flow control
The aperture of valve is changed into the second preset value P2；When the temperature T0 that the temperature sensor detects rises to more than or equal to second
Preset temperature value T2, and be less than third preset temperature value T3 when, the aperture of the flow control valve is changed into third preset value P3；
When the temperature T0 that the temperature sensor detects rises to more than or equal to third preset temperature value T3, the flow control
Valve closes cut-off, wherein third preset value P3 opening value P2 default less than second, and the second default opening value P2 is then less than first
Default opening value P1.
Further, the first preset temperature value T1 is 0 DEG C；The second preset temperature value T2 is 1 DEG C；The third is pre-
If temperature value T3 is 2 DEG C.
Further, the temperature sensor is set to the refrigerant input end of the outdoor heat exchanger.
Further, the flow control valve is electric expansion valve.
It further, further include having four-way valve.
Compared with the prior art, the beneficial effect of the present invention is that when outdoor temperature is lower, and air-conditioning system is in heating mould
It is defeated by heating the refrigerant that high pressure and high temperature refrigerant of a part after compressor compresses is drained to outdoor heat exchanger by branch when formula
Enter end and mix confluence from the refrigerant of the low-pressure low-temperature after indoor heat exchanger heat exchange to enter in outdoor heat exchanger, passes through raising
Into the temperature and pressure of the refrigerant of outdoor heat exchanger, so that the internal pipeline of outdoor heat exchanger and structure are continuously in conjunction
Suitable temperature range effectively prevent the frost of outdoor heat exchanger, and entire heating process substantially increases use without shutting down
The usage experience at family and the comfort of indoor environment；Meanwhile the pressure of air-conditioning system low-pressure side is also improved, make the profit of low-pressure side
Lubricating oil will not be solidified because temperature is too low so as to cause compressor oil return difficulty, improve the use reliability of compressor.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is frame principle figure of the invention.
Wherein, 1- compressor, 2- outdoor heat exchanger, 3- indoor heat exchanger, 4- heat branch, 5- flow control valve, 6- temperature
Spend sensor, 7- control module, 8- four-way valve.
Specific embodiment
The present invention is further explained in the light of specific embodiments:
Referring to shown in attached drawing 1 and attached drawing 2, the present embodiment is a kind of air-conditioning system with outdoor unit antifrost function, includes
Refrigerant heat-exchanging loop (the refrigerant being made of compressor 1, outdoor heat exchanger 2, indoor heat exchanger 3, throttle valve and four-way valve 8
Heat-exchanging loop structure is conventional Air-conditioning Cycle heat-exchanging loop, by the commutation of four-way valve 8 carry out air-conditioning system refrigeration mode and
The switching of heating mode)；It is increased newly on the refrigerant heat-exchanging loop and is equipped with a heating branch 4；Heating 4 one end of branch is connected to compression
The refrigerant output end of machine 1, the other end are connected to the refrigerant input terminal of outdoor heat exchanger 2；It further include being set to heating branch 4
On flow control valve 5, be set to the temperature sensor 6 of 2 refrigerant input end of outdoor heat exchanger (position for being easiest to frosting)
And control module 7, wherein the temperature signal of 6 real-time detection outdoor heat exchanger 2 of temperature sensor is sent to control module 7, from
And the aperture of flow control valve 5 is controlled by control module 7 and is controlled with the cold medium flux to heating branch 4；In this way,
When outdoor temperature is lower, and air-conditioning system is in heating mode, a part is compressed through compressor 1 by heating branch 4
High pressure and high temperature refrigerant afterwards be drained to the refrigerant input terminal of outdoor heat exchanger 2 with from the low-pressure low-temperature after the heat exchange of indoor heat exchanger 3
Refrigerant mix confluence and enter in outdoor heat exchanger 2, the temperature and pressure of the refrigerant of outdoor heat exchanger 2 are entered by improving
Power effectively prevent outdoor heat exchange so that the internal pipeline of outdoor heat exchanger 2 and structure are continuously in suitable temperature range
The frost of device 2, and entire heating process is without shutting down, substantially increase user usage experience and indoor environment it is comfortable
Property, structure arrangement is ingenious.
In the present embodiment, when the temperature T0 that temperature sensor 6 detects generally is set less than the first preset temperature value T1(T1
It is set to 0 DEG C) when, flow control valve 5 is opened and aperture is the first preset value P1；After the unlatching of flow control valve 5, temperature sensor
6 continue to be measured in real time outdoor heat exchanger 2, when the temperature T0 that temperature sensor 6 detects rises to more than or equal to
One preset temperature value T1 and be usually set to 1 DEG C less than the second preset temperature value T2(T2) when, flow control valve 5 aperture transformation
For for the second preset value P2；When the temperature T0 that temperature sensor 6 detects rises to more than or equal to the second preset temperature value T2,
And be less than third preset temperature value T3(T3 and be usually set to 2 DEG C) when, the aperture of flow control valve 5 is changed into third preset value
P3；When the temperature T0 that temperature sensor 6 detects rises to more than or equal to third preset temperature value T3, flow control valve 5
Cut-off is closed, i.e. the temperature T0 of the refrigerant input terminal of outdoor heat exchanger 2 is suitable when being greater than or equal to third preset temperature value T3
Temperature range, heat branch 4 at this time and end, wherein third preset value P3 opening value P2 default less than second, and second is default
The value of opening value P2 then opening value P1(P1, P2 and P3 default less than first are according to specific air-conditioning system and actual work
It carries out debugging as environment to obtain).
In the present embodiment, flow control valve 5 is electric expansion valve.
In the present embodiment, control module 7 using single-chip microcontroller or has the function of the control of signal transmitting and receiving and processing function
Chip controls the aperture of electric expansion valve by the acquisition of signal, processing and transmitting to control the flow of pipeline fluid
For conventional technology.
In addition, it should be noted that, the specific embodiments described in this specification, each section title etc. can not
Together, the equivalent or simple change that all structure, feature and principles described according to the invention patent design are done, is included in the present invention
In the protection scope of patent.Those skilled in the art can do described specific embodiment various each
The mode that the modify or supplement or adopt of sample is similar substitutes, and without departing from structure of the invention or surmounts the claims
Defined range, is within the scope of protection of the invention.
Claims (7)
1. a kind of air-conditioning system with outdoor unit antifrost function, include by compressor (1), outdoor heat exchanger (2) and
The refrigerant heat-exchanging loop of indoor heat exchanger (3) composition；It is characterized by also including have heating branch (4)；The heating branch
(4) one end is connected to the refrigerant output end of the compressor (1), and the other end is connected to the refrigerant of the outdoor heat exchanger (2)
Input terminal, to improve the refrigerant temperature and pressure into the outdoor heat exchanger (2).
2. a kind of air-conditioning system with outdoor unit antifrost function according to claim 1, it is characterised in that: further include
There are the flow control valve (5) being set on heating branch (4), the temperature sensing being set on the outdoor heat exchanger (2)
Device (6) and control module (7), wherein the temperature of outdoor heat exchanger (2) described in temperature sensor (6) real-time detection is believed
Number the control module (7) are sent to, to pass through the aperture that the control module (7) control the flow control valve (5).
3. a kind of air-conditioning system with outdoor unit antifrost function according to claim 2, it is characterised in that: when described
When the temperature T0 that temperature sensor (6) detects is less than the first preset temperature value T1, the flow control valve (5) is opened and aperture
For the first preset value P1；After the flow control valve (5) are opened, when on the temperature T0 that the temperature sensor (6) detects
It rises to and is greater than or equal to the first preset temperature value T1 when less than the second preset temperature value T2, flow control valve (5) are opened
Degree is changed into the second preset value P2；When the temperature T0 that the temperature sensor (6) detects rises to more than or equal to second in advance
If temperature value T2, and be less than third preset temperature value T3 when, the aperture of the flow control valve (5) is changed into third preset value
P3；When the temperature T0 that the temperature sensor (6) detects rises to more than or equal to third preset temperature value T3, the stream
Control valve (5) closes cut-off, wherein third preset value P3 opening value P2 default less than second, and the second default opening value P2
Then opening value P1 default less than first.
4. a kind of air-conditioning system with outdoor unit antifrost function according to claim 3, it is characterised in that: described
One preset temperature value T1 is 0 DEG C；The second preset temperature value T2 is 1 DEG C；The third preset temperature value T3 is 2 DEG C.
5. a kind of air-conditioning system with outdoor unit antifrost function according to claim 2, it is characterised in that: the temperature
Degree sensor (6) is set to the refrigerant input end of the outdoor heat exchanger (2).
6. a kind of air-conditioning system with outdoor unit antifrost function according to claim 2, it is characterised in that: the stream
Control valve (5) is electric expansion valve.
7. a kind of air-conditioning system with outdoor unit antifrost function according to claim 1, it is characterised in that: further include
There are four-way valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504303.1A CN109579383A (en) | 2018-12-10 | 2018-12-10 | A kind of air-conditioning system with outdoor unit antifrost function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504303.1A CN109579383A (en) | 2018-12-10 | 2018-12-10 | A kind of air-conditioning system with outdoor unit antifrost function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109579383A true CN109579383A (en) | 2019-04-05 |
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ID=65929482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811504303.1A Pending CN109579383A (en) | 2018-12-10 | 2018-12-10 | A kind of air-conditioning system with outdoor unit antifrost function |
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| Country | Link |
|---|---|
| CN (1) | CN109579383A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2648554A1 (en) * | 1976-10-27 | 1977-11-10 | Reinhard Mueller | Hot gas defrosting device for refrigerating plants - uses combination of fluid separator and LV transformer as energy source |
| CN201025421Y (en) * | 2007-01-16 | 2008-02-20 | 台湾美威国际事业有限公司 | Thermal pump bypass defrosting device |
| CN101965492A (en) * | 2008-05-15 | 2011-02-02 | Xdx创新制冷有限公司 | Surged vapor compression heat transfer system with reduced defrost |
| CN203908148U (en) * | 2014-06-13 | 2014-10-29 | 广东美的制冷设备有限公司 | Air conditioning system |
-
2018
- 2018-12-10 CN CN201811504303.1A patent/CN109579383A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2648554A1 (en) * | 1976-10-27 | 1977-11-10 | Reinhard Mueller | Hot gas defrosting device for refrigerating plants - uses combination of fluid separator and LV transformer as energy source |
| CN201025421Y (en) * | 2007-01-16 | 2008-02-20 | 台湾美威国际事业有限公司 | Thermal pump bypass defrosting device |
| CN101965492A (en) * | 2008-05-15 | 2011-02-02 | Xdx创新制冷有限公司 | Surged vapor compression heat transfer system with reduced defrost |
| CN203908148U (en) * | 2014-06-13 | 2014-10-29 | 广东美的制冷设备有限公司 | Air conditioning system |
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Application publication date: 20190405 |