CN104976737B - Air conditioner and refrigerating method - Google Patents
Air conditioner and refrigerating method Download PDFInfo
- Publication number
- CN104976737B CN104976737B CN201510378002.9A CN201510378002A CN104976737B CN 104976737 B CN104976737 B CN 104976737B CN 201510378002 A CN201510378002 A CN 201510378002A CN 104976737 B CN104976737 B CN 104976737B
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- Prior art keywords
- temperature
- outdoor
- primary heater
- heater
- controller
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to Structural design of the air conditioner and refrigerating method technical field, there is provided a kind of air conditioner and refrigerating method.The air conditioner includes device for detecting temperature, controller and is sequentially connected in series the compressor in the same circuit, primary heater, outdoor heat exchanger, restricting element, secondary heater and indoor heat exchanger；Controller is used to obtain outdoor temp angle value by device for detecting temperature in cooling mode, and outdoor temp angle value is compared with temperature threshold, and primary heater and secondary heater are turned on and off when outdoor temp angle value is less than or greater than temperature threshold.Before throttling by heating can significantly improve throttling before refrigerant temperature, prevent at throttling due to environment temperature is too low and cause refrigeration oil separate out and influence restriction effect phenomenon occur, avoid in long-play, indoor set freeze, compressor return liquid phenomena such as；Heating can avoid the cryogenic fluid gas after throttling from spending low in low temperature environment medium temperature and the phenomenon to freeze occur after throttling.
Description
Technical field
The present invention relates to Structural design of the air conditioner and refrigerating method technical field, a kind of air conditioner and refrigeration side are especially provided
Method.
Background technology
In existing frequency conversion gas air conditioner control system, gas air conditioner major design basis is hotter in environment temperature
When freezed, environment temperature than it is relatively low when heated.
And when outdoor environment temperature is relatively low, still there is refrigeration demand if now indoor, now imitated because outside exchanges heat
Fruit is very good, and condensation radiating is very good, and it is too low to ultimately result in compressor exhaust temperature, and pressure at expulsion deficiency, refrigerant does not have enough
Power gets in side from outside, and then causes the low-down phenomenon of air-conditioning system refrigerating capacity.If long-play, compare
The problems such as easily causing indoor set icing, compressor to return liquid, outdoor unit heat exchanger frosting.
The content of the invention
(1) technical problems to be solved
The technical problem to be solved in the present invention indoor set that is existing air conditioner under cryogenic refrigeration regulation freezes to be held with, contracting machine
Easily return the technical problem of liquid and outdoor unit heat exchanger frosting.
(2) technical scheme
In order to solve the above technical problems, the invention provides a kind of air conditioner, including device for detecting temperature, controller and
The compressor in the same circuit, primary heater, outdoor heat exchanger, restricting element, secondary heater and interior is sequentially connected in series to change
Hot device；
The controller is used to obtain outdoor temp angle value by the device for detecting temperature in cooling mode, and by outdoor
Temperature value is compared with temperature threshold, and the primary heater and second are opened when outdoor temp angle value is less than the temperature threshold
Heater, and the primary heater and secondary heater are closed when outdoor temp angle value is more than the temperature threshold.
Preferably, the primary heater is smoke combustion device, and the secondary heater is flue gas heat-exchange unit, described second
The air inlet of heater connects with the exhaust vent of the primary heater.
Present invention also offers a kind of method freezed using above-mentioned air conditioner, comprise the following steps：
S1, start air conditioner progress refrigerating operaton；
S2, pass through temperature inductor detection outdoor temperature；
S3, by the controller outdoor temperature detected by the temperature inductor is judged, and in outdoor
Temperature opens the primary heater when being less than the temperature threshold, and with outdoor temperature reduction or rise and corresponding raising
Or reduce the heating intensity of the primary heater.
Preferably, outdoor temperature is divided into several subregions by gradient, and accordingly by the controller to described first
The control of heater is divided into the gear of several respective amounts.
Preferably, outdoor temperature is divided into four subregions by gradient, and accordingly added the controller to described first
The control of hot device is divided into closing, low grade, middle-grade and high-grade four gears.
Preferably, the controller is controlled using stepless temperature-regulating the primary heater.
Preferably, meet between the heating-up temperature of the primary heater under controller control and outdoor temperature change
Relationship below：
T1=T2, wherein, T1For the variable quantity of the heating-up temperature of primary heater, T2For the variable quantity of outdoor temperature.
(3) beneficial effect
A kind of air conditioner provided by the invention, including device for detecting temperature, controller and be sequentially connected in series in the same circuit
Compressor, primary heater, outdoor heat exchanger, restricting element, secondary heater and indoor heat exchanger；Controller is used to make
Outdoor temp angle value is obtained by device for detecting temperature under chill formula, and outdoor temp angle value is compared with temperature threshold, in outdoor
Temperature value opens primary heater and secondary heater when being less than temperature threshold, and when outdoor temp angle value is more than temperature threshold
Close primary heater and secondary heater.Refrigerant is heated by primary heater before throttling, can be significantly improved
The temperature of refrigerant before throttling, prevent from causing refrigeration oil to separate out because environment temperature is too low at throttling and influenceing showing for restriction effect
As occur, avoid in long-play, indoor set freeze, compressor return liquid phenomena such as；Pass through secondary heater after throttling
Refrigerant medium is heated, avoids the cryogenic fluid gas after throttling from spending low in low temperature environment medium temperature and occur what is frozen
Phenomenon.
Further, primary heater is smoke combustion device, and secondary heater is flue gas heat-exchange unit, and secondary heater enters
Gas port connects with the exhaust vent of primary heater.Thus the heat source of secondary heater is made from primary heater
Used heat, so as to improve the utilization rate of the energy.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of air conditioner of the embodiment of the present invention.
Reference：
1st, compressor；2nd, four-way valve；3rd, primary heater；4th, outdoor heat exchanger；5th, restricting element；6th, indoor heat exchanger；
7th, gas-liquid separator；8th, secondary heater.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
In the description of the invention, it is necessary to which explanation, unless otherwise clearly defined and limited, term " connection " should be done
It broadly understood, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can be joined directly together,
It can also be indirectly connected by intermediary.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
As shown in figure 1, a kind of air conditioner provided in an embodiment of the present invention, including four-way valve 2, compressor 1, outdoor heat exchanger
4th, restricting element 5, indoor heat exchanger 6, primary heater 3, temperature inductor and controller；Primary heater 3, outdoor heat exchange
Device 4, restricting element 5 and indoor heat exchanger 6 are sequentially connected in series in the first path, the both ends of the first path respectively with four-way valve 2
Two orifices；Corresponding two other orifice with four-way valve 2 in the both ends (inlet end and drain side) of compressor 1,
Gas-liquid separator 7 is additionally provided with the air inlet pipeline of compressor 1, the gas-liquid separator 7 is used to filter out refrigerant in air inlet pipeline
Liquid in gas；Four-way valve 2 is used to make the first path and compressor 1 between positive on-state and reverse on-state enter
Row switching, even if air conditioner switches between refrigeration mode and heating mode, it is specially：When four-way valve 2 makes compressor 1
Drain pipe road connects with indoor heat exchanger 6, and when the air inlet pipeline of compressor 1 is connected with primary heater 3, air conditioner is system
Heat pattern；When four-way valve 2 makes the drain pipe road of compressor 1 be connected with primary heater 3, and make the air inlet pipeline of compressor 1 with
When indoor heat exchanger 6 connects, air conditioner is in refrigeration mode.
Temperature inductor is disposed in the outdoor, for monitoring outdoor temperature, and by outdoor temperature information transmission to controller；Control
Device processed is used to compare the outdoor temperature that temperature inductor is sensed and temperature threshold, and is less than temperature threshold in outdoor temperature
Primary heater 3 is opened during value, and primary heater 3 is closed when outdoor temperature is more than temperature threshold, the temperature threshold is
To delimit whether outdoor temperature is one of low temperature boundary, the composition and applying environment of the setting of concrete numerical value by refrigerant medium
Influence etc. factor, can be determined by experiment when specifically applying.Under cryogenic refrigeration environment (outdoor temperature is less than temperature threshold), by
In outside, heat transfer effect is very good, and condensation radiating is very good, and it is too low to eventually result in the delivery temperature of compressor 1, pressure at expulsion deficiency,
Refrigerant does not have enough power to get in side from outside, and then causes the low-down phenomenon of air-conditioning system refrigerating capacity, room
Refrigeration working medium in outer machine heat exchanger is easy to frosting or icing at low ambient temperatures.The present embodiment adds before throttling by first
Hot device 3 heats to refrigerant, can significantly improve the temperature of refrigerant before throttling, prevent at throttling because environment temperature is too low and
The phenomenon for causing refrigeration oil to separate out and influenceing restriction effect occurs, and avoids in long-play, and indoor set freezes, compressor 1
Phenomena such as returning liquid.
The air conditioner of the present embodiment also includes secondary heater 8, and secondary heater 8 is arranged on the first path, and positioned at section
Between fluid element 5 and indoor heat exchanger 6, secondary heater is used to be opened by controller control when outdoor temperature is less than temperature threshold
Open, and controlled and closed by controller when outdoor temperature is more than temperature threshold, by secondary heater 8 to the gas after throttling
Working medium is heated, and avoids the cryogenic fluid gas after throttling from spending low in low temperature environment medium temperature and the phenomenon to freeze occur.
Wherein, primary heater is preferably smoke combustion device, and secondary heater is preferably flue gas heat-exchange unit, and first heats
Utensil has air intlet, fuel gas inlet and exhaust vent；And flue gas heat-exchange unit has air inlet and exhaust outlet, pass through air inlet
Be passed through flue gas is discharged by exhaust outlet again after being exchanged heat；The air inlet of the secondary heater 8 of the present embodiment adds with described first
The exhaust vent connection of hot device 3, the thermal source of such secondary heater are entirely derived from the fume waste heat of primary heater, so as to
Improve the utilization rate of the energy.
Present invention also offers a kind of refrigerating method using above-mentioned air conditioner, comprise the following steps：
S1, start the air conditioner progress refrigerating operaton；
S2, temperature inductor detection outdoor temperature；
S3, the controller judged the outdoor temperature detected by the temperature inductor, and in outdoor temperature
Open the primary heater 3 during less than the temperature threshold, and with reduction or the rise of outdoor temperature corresponding raising or
Reduce the heating intensity of the primary heater 3.
In step 3, meet between the change of the heating-up temperature and outdoor temperature of primary heater 3 under control of the controller with
Lower relational expression：T1=4T2, wherein, T1For the variable quantity of the heating-up temperature of primary heater 3, T2For the variable quantity of outdoor temperature.
Specifically outdoor temperature can be divided into several subregions by gradient, and accordingly by the controller to the primary heater 3
Control is divided into the gears of several respective amounts, for example primary heater 3 can be heated from 0~200 DEG C, the low temperature warm area of setting
For 20 DEG C~-30 DEG C, then carry out ratio according to the temperature difference and calculate 50 DEG C of temperature difference, it is necessary to be divided into 50 parts by 200 DEG C, environment temperature is every
1 degree is reduced, primary heater 3 raises 4 DEG C.It is noted that 50 parts here can respectively be may not be respectively, can also
It is divided into more parts or for the less combination of selection easy to control, such as outdoor temperature can be divided into four points from high to low
Area, each subregion correspond to a control gear of controller, i.e. the control gear of controller is divided into from low to high：Close
Close, be low-grade, middle-grade and top grade, such a mode is easy to control, and the design difficulty of controller is low, and operating cost is relatively low.If chase after
Ask and more accurately regulate and control, controller may be arranged as to the primary heater 3 by the way of stepless temperature-regulating control.
Due to secondary heater 8 thermal source derive from primary heater 3 used heat, when primary heater 3 heating amount with
The reduction of outdoor temperature and when increasing, EGT caused by primary heater 3 can also improve therewith, so that the second heating
The heating-up temperature of device 8 also gradually strengthens with the reduction of outdoor temperature.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and replacement can also be made, these improve and replaced
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of air conditioner, it is characterised in that including device for detecting temperature, controller and be sequentially connected in series pressure in the same circuit
Contracting machine (1), primary heater (3), outdoor heat exchanger (4), restricting element (5), secondary heater (8) and indoor heat exchanger (6)；
The controller is used to obtain outdoor temp angle value by the device for detecting temperature in cooling mode, and by outdoor temperature
Value is compared with temperature threshold, and the primary heater (3) and second are opened when outdoor temp angle value is less than the temperature threshold
Heater (8), and the primary heater (3) and secondary heater are closed when outdoor temp angle value is more than the temperature threshold
(8)。
2. air conditioner according to claim 1, it is characterised in that the primary heater is smoke combustion device, described
Two heaters (8) are flue gas heat-exchange unit, and the air inlet of the secondary heater (8) is arranged with the waste gas of the primary heater (3)
Gas port connects.
3. a kind of method that air conditioner using as described in any one of claim 1 or 2 is freezed, it is characterised in that including
Following steps：
S1, start air conditioner progress refrigerating operaton；
S2, pass through temperature inductor detection outdoor temperature；
S3, by the controller outdoor temperature detected by the temperature inductor is judged, and in outdoor temperature
Open the primary heater (3) during less than the temperature threshold, and with outdoor temperature reduction or rise and corresponding raising
Or reduce the heating intensity of the primary heater (3).
4. refrigerating method according to claim 3, it is characterised in that outdoor temperature is divided into several subregions by gradient,
And control of the controller to the primary heater (3) is divided into the gear of several respective amounts accordingly.
5. refrigerating method according to claim 3, it is characterised in that outdoor temperature is divided into four subregions by gradient, and
Control of the controller to the primary heater (3) is divided into closing, low grade, middle-grade and high-grade four gears accordingly.
6. refrigerating method according to claim 5, it is characterised in that the controller is adopted to the primary heater (3)
Controlled with stepless temperature-regulating.
7. according to the refrigerating method described in any one of claim 3 to 6, it is characterised in that the under controller control
Meet relationship below between heating-up temperature and the outdoor temperature change of one heater (3)：
T1=4T2, wherein, T1For the variable quantity of the heating-up temperature of primary heater (3), T2For the variable quantity of outdoor temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378002.9A CN104976737B (en) | 2015-06-30 | 2015-06-30 | Air conditioner and refrigerating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378002.9A CN104976737B (en) | 2015-06-30 | 2015-06-30 | Air conditioner and refrigerating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104976737A CN104976737A (en) | 2015-10-14 |
| CN104976737B true CN104976737B (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510378002.9A Active CN104976737B (en) | 2015-06-30 | 2015-06-30 | Air conditioner and refrigerating method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106484A (en) * | 2018-01-30 | 2018-06-01 | 中国科学院理化技术研究所 | A kind of device and method for preventing cryogenic heat exchanger frozen plug |
| CN109990394B (en) * | 2019-04-15 | 2023-06-02 | 珠海格力电器股份有限公司 | Control method for engine oil temperature of compressor, heating device and air conditioner |
| CN114489176B (en) * | 2021-12-31 | 2023-04-07 | 北京京仪自动化装备技术股份有限公司 | Coupling temperature control system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201050912Y (en) * | 2007-05-25 | 2008-04-23 | 王金凤 | Hot pump water heater or heat pump air conditioner with defrosting function |
| CN103363708A (en) * | 2012-04-09 | 2013-10-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioning device |
| CN203375604U (en) * | 2013-06-28 | 2014-01-01 | 美的集团股份有限公司 | Heat pump air conditioner system |
| CN103851752A (en) * | 2012-12-04 | 2014-06-11 | 邯郸美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN104596000A (en) * | 2014-12-19 | 2015-05-06 | 广东美的制冷设备有限公司 | Air conditioner and control method of air conditioner |
-
2015
- 2015-06-30 CN CN201510378002.9A patent/CN104976737B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201050912Y (en) * | 2007-05-25 | 2008-04-23 | 王金凤 | Hot pump water heater or heat pump air conditioner with defrosting function |
| CN103363708A (en) * | 2012-04-09 | 2013-10-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioning device |
| CN103851752A (en) * | 2012-12-04 | 2014-06-11 | 邯郸美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN203375604U (en) * | 2013-06-28 | 2014-01-01 | 美的集团股份有限公司 | Heat pump air conditioner system |
| CN104596000A (en) * | 2014-12-19 | 2015-05-06 | 广东美的制冷设备有限公司 | Air conditioner and control method of air conditioner |
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| CN104976737A (en) | 2015-10-14 |
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