CN104329842A - Air conditioning evaporator device with defrosting function - Google Patents
Air conditioning evaporator device with defrosting function Download PDFInfo
- Publication number
- CN104329842A CN104329842A CN201410626177.2A CN201410626177A CN104329842A CN 104329842 A CN104329842 A CN 104329842A CN 201410626177 A CN201410626177 A CN 201410626177A CN 104329842 A CN104329842 A CN 104329842A
- Authority
- CN
- China
- Prior art keywords
- temperature
- evaporimeter
- compressor
- evaporator device
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
Abstract
The invention discloses an air conditioning evaporator device with a defrosting function. The air conditioning evaporator device comprises a compressor, a condenser, an expansion valve, an evaporator and a gas-liquid separator, which are communicated in series in sequence through pipelines so as to form a loop, wherein an evaporation fan is arranged at one side of the evaporator, and an axial flow fan is arranged at one side of the compressor. The air conditioning evaporator device has the advantage of wide application range and can be widely applied to an air conditioner, which still requires refrigeration under the low temperature environment.
Description
Technical field
The present invention relates to field of air conditioning, specifically a kind of A/C evaporator device with defrost function.
Background technology
Along with the needs of modern technologies development, requirements at the higher level are proposed to the purposes of air-conditioning equipment, not only require that refrigeration also requires still to require compressor cooling in outdoor less than 15 DEG C more than-5 DEG C environment temperatures, the heat produced when meeting cooled equipment work evacuates requirement.
Generally, higher in ambient temperature, the heat produced when air conditioner refrigerating amount can make cooled equipment work is evacuated in time, illustrates that air conditioner refrigerating amount can meet the demand of cooled equipment cooling cooling.But when the outside ambient temperature is low, air conditioner refrigerating runs a period of time, there is the frosting of larger area on the surface of evaporimeter, air outlet air quantity is more and more less, refrigeration is deteriorated, the heat produced during cooled equipment work can not be evacuated in time, and accumulation of heat will cause cooled equipment cisco unity malfunction, and serious even burns.So during low temperature refrigeration of air conditioner, evaporator defrost is particularly important.
Air conditioner industry generally adopts temperature controller or temperature sensor as evaporator temperature measurement mechanism.The temperature-sensitive bag of temperature controller (interior filled liquid) is placed in easy frosting place of evaporimeter and fixes, during normal temperature, temperature controller contact is normally closed, and air conditioner refrigerating is normal.When evaporator temperature is lower than 0 DEG C, temperature controller contact dynamic circuit breaker, air-conditioning stops refrigeration only air-supply, and the frost on evaporimeter is melted gradually and reached defrosting object.But temperature controller sensitivity is not high, temperature drift is serious, and defrost collection position difficulty accurately controls.Adopt temperature sensor to substitute temperature controller, sensitivity, control accuracy are improved but the still difficult accurately setting of collection position, operating temperature value, arrange the improper frequent start-stop that easily causes and freeze, do not reach actual effect.
summary of the inventionthe object of this invention is to provide a kind of A/C evaporator device with defrost function, the problem that during to solve prior art cryogenic refrigeration, the frosting of A/C evaporator large area causes refrigeration to be deteriorated.。
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of A/C evaporator device with defrost function, it is characterized in that: comprise compressor, condenser, expansion valve, evaporimeter, gas-liquid separator, described compressor, condenser, expansion valve, evaporimeter, gas-liquid separator form loop by pipeline successively serial communication, described evaporimeter side is provided with evaporation fan, the air outlet of evaporation fan aims at evaporimeter, described compressor side is provided with axial flow blower, and the air outlet of axial flow blower aims at compressor.
Described a kind of A/C evaporator device with defrost function, is characterized in that: described condenser is also provided with temperature sensor.
Beneficial effect of the present invention is embodied in:
1, A/C evaporator of the present invention, the problem that when effectively solving low temperature refrigeration of air conditioner, the frosting of evaporimeter large area causes refrigeration to be deteriorated.
2, the present invention China and foreign countries environment temperature sensor volume is little, lightweight, easy for installation, failure rate is low.
3, time intermittence automatic defrosting during low temperature refrigeration of air conditioner in the present invention, is easy to realize and safe and reliable.
4, the present invention is applied widely, can be widely used in the air-conditioning that low temperature environment still needs to freeze.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is pressure-enthalpy chart in detailed description of the invention.
Detailed description of the invention
Shown in Figure 1, a kind of A/C evaporator device with defrost function, comprise compressor 1, condenser 2, expansion valve 3, evaporimeter 4, gas-liquid separator 5, compressor 1, condenser 2, expansion valve 3, evaporimeter 4, gas-liquid separator 5 form loop by pipeline successively serial communication, evaporimeter 4 side is provided with evaporation fan 6, the air outlet of evaporation fan 6 aims at evaporimeter 4, and compressor 1 side is provided with axial flow blower 7, and the air outlet of axial flow blower 7 aims at compressor 1.Condenser 2 is also provided with temperature sensor 8.
As shown in Figure 1, the outlet of described compressor 1 is connected with condenser 2, expansion valve 3, evaporimeter 4, gas-liquid separator 5 successively by pipeline; In order to carry out circulation to cooled equipment or space, reach the object of cooling fast, the side of evaporimeter 4 is provided with the evaporation fan 6 for circulating ventilation cooling; In order to accelerate the operating efficiency of condenser, condenser 2 side is provided with the axial flow blower 7 for taking away condenser heat; In order to detect external environment temperature, condenser 2 side is provided with temperature sensor.
The present invention analyzes and sums up a large amount of experience solving evaporimeter frosting process by pressure-enthalpy chart, when external environment temperature reduces, the condensing pressure of air-conditioning and condensation temperature reduce, and compressor pressure ratios E=P
k/ P
onecessarily, thus cause evaporating pressure and evaporating temperature to reduce, when evaporating temperature is close to freezing point temperature, evaporator surface just has frost or ice to be formed, when external environment temperature reaches specific temperature (being easy to the environment temperature of frosting), and the time of the continuous operating provisions of air conditioner refrigerating (specifying voluntarily according to cold size) refrigeration just quits work 5 minutes, thus reaches the object of defrosting.Can not occur that wind pushing temperature is high because of refrigeration stopping during air-conditioner defrosting, because surface temperature is lower during evaporimeter defrosting, wind pushing temperature is not high, does not affect refrigeration.
Air-conditioning state change and these changes are expressed as follows by pressure-enthalpy chart as shown in Figure 2 on the impact of kind of refrigeration cycle:
1-2 procedural representation compressor compresses becomes high temperature and high pressure gas, and in 2-3 procedural representation condensation heat release surrounding environment, 3-4 procedural representation reducing pressure by regulating flow, the evaporation of 4-1 procedural representation is absorbed heat from surrounding environment.
When external environment temperature reduces, the condensing pressure P of air-conditioning
kand condensation temperature t
kreduce, and compressor pressure ratios E=P
k/ P
onecessarily, thus cause evaporating pressure P
0and evaporating temperature t
0reduce, work as t
0during close to freezing point temperature, evaporator surface just has frost or ice to be formed, when external environment temperature reaches specific temperature (being easy to the environment temperature of frosting), and the time of the continuous operating provisions of air conditioner refrigerating (specifying voluntarily according to cold size) refrigeration just quits work 5 minutes, thus reaches the object of defrosting.Can not occur that wind pushing temperature is high because of refrigeration stopping during air-conditioner defrosting, because surface temperature is lower during evaporimeter defrosting, wind pushing temperature is not high, does not affect refrigeration.
Claims (2)
1. one kind has the A/C evaporator device of defrost function, it is characterized in that: comprise compressor, condenser, expansion valve, evaporimeter, gas-liquid separator, described compressor, condenser, expansion valve, evaporimeter, gas-liquid separator form loop by pipeline successively serial communication, described evaporimeter side is provided with evaporation fan, the air outlet of evaporation fan aims at evaporimeter, described compressor side is provided with axial flow blower, and the air outlet of axial flow blower aims at compressor.
2. a kind of A/C evaporator device with defrost function according to claim 1, is characterized in that: described condenser is also provided with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410626177.2A CN104329842A (en) | 2014-11-08 | 2014-11-08 | Air conditioning evaporator device with defrosting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410626177.2A CN104329842A (en) | 2014-11-08 | 2014-11-08 | Air conditioning evaporator device with defrosting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104329842A true CN104329842A (en) | 2015-02-04 |
Family
ID=52404612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410626177.2A Pending CN104329842A (en) | 2014-11-08 | 2014-11-08 | Air conditioning evaporator device with defrosting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329842A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839532A (en) * | 2017-03-24 | 2017-06-13 | 合肥天鹅制冷科技有限公司 | Air-conditioning system evaporator antifrost icing device |
| CN106958929A (en) * | 2017-05-17 | 2017-07-18 | 广东美的暖通设备有限公司 | Air-conditioning system and its blower control method |
| CN107298006A (en) * | 2017-08-22 | 2017-10-27 | 合肥天鹅制冷科技有限公司 | DC frequency-changing on-board air conditioner |
| CN108151254A (en) * | 2017-12-25 | 2018-06-12 | 广东美的制冷设备有限公司 | Air conditioner, progress control method and computer readable storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2169803Y (en) * | 1992-08-12 | 1994-06-22 | 肖汉林 | Micro air conditioner |
| JP2010150945A (en) * | 2008-12-24 | 2010-07-08 | Toshiba Carrier Corp | Axial fan and outdoor unit for air conditioner |
| CN101988718A (en) * | 2009-08-03 | 2011-03-23 | 乐金电子(天津)电器有限公司 | Window air conditioner |
| CN202074626U (en) * | 2011-05-10 | 2011-12-14 | 珠海格力电器股份有限公司 | Air conditioner of elevator |
| CN102635901A (en) * | 2012-05-03 | 2012-08-15 | 海尔集团公司 | Condensing system for window-type air conditioners |
| CN203005750U (en) * | 2012-10-26 | 2013-06-19 | 江苏兆胜空调有限公司 | Helicopter refrigeration air conditioner |
| CN104019532A (en) * | 2014-06-13 | 2014-09-03 | 江苏永昇空调有限公司 | Cooling system of air cooling grain cooler |
| CN204285917U (en) * | 2014-11-08 | 2015-04-22 | 合肥天鹅制冷科技有限公司 | A kind of A/C evaporator device with defrost function |
-
2014
- 2014-11-08 CN CN201410626177.2A patent/CN104329842A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2169803Y (en) * | 1992-08-12 | 1994-06-22 | 肖汉林 | Micro air conditioner |
| JP2010150945A (en) * | 2008-12-24 | 2010-07-08 | Toshiba Carrier Corp | Axial fan and outdoor unit for air conditioner |
| CN101988718A (en) * | 2009-08-03 | 2011-03-23 | 乐金电子(天津)电器有限公司 | Window air conditioner |
| CN202074626U (en) * | 2011-05-10 | 2011-12-14 | 珠海格力电器股份有限公司 | Air conditioner of elevator |
| CN102635901A (en) * | 2012-05-03 | 2012-08-15 | 海尔集团公司 | Condensing system for window-type air conditioners |
| CN203005750U (en) * | 2012-10-26 | 2013-06-19 | 江苏兆胜空调有限公司 | Helicopter refrigeration air conditioner |
| CN104019532A (en) * | 2014-06-13 | 2014-09-03 | 江苏永昇空调有限公司 | Cooling system of air cooling grain cooler |
| CN204285917U (en) * | 2014-11-08 | 2015-04-22 | 合肥天鹅制冷科技有限公司 | A kind of A/C evaporator device with defrost function |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839532A (en) * | 2017-03-24 | 2017-06-13 | 合肥天鹅制冷科技有限公司 | Air-conditioning system evaporator antifrost icing device |
| CN106958929A (en) * | 2017-05-17 | 2017-07-18 | 广东美的暖通设备有限公司 | Air-conditioning system and its blower control method |
| CN107298006A (en) * | 2017-08-22 | 2017-10-27 | 合肥天鹅制冷科技有限公司 | DC frequency-changing on-board air conditioner |
| CN108151254A (en) * | 2017-12-25 | 2018-06-12 | 广东美的制冷设备有限公司 | Air conditioner, progress control method and computer readable storage medium |
| CN108151254B (en) * | 2017-12-25 | 2020-09-08 | 广东美的制冷设备有限公司 | Air conditioner, operation control method, and computer-readable storage medium |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |
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| RJ01 | Rejection of invention patent application after publication |