CN201344688Y - Automatic defrosting and refrigerating device - Google Patents
Automatic defrosting and refrigerating device Download PDFInfo
- Publication number
- CN201344688Y CN201344688Y CNU2008201816248U CN200820181624U CN201344688Y CN 201344688 Y CN201344688 Y CN 201344688Y CN U2008201816248 U CNU2008201816248 U CN U2008201816248U CN 200820181624 U CN200820181624 U CN 200820181624U CN 201344688 Y CN201344688 Y CN 201344688Y
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- compressor
- defrosting
- evaporator
- refrigerant line
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Abstract
The utility model discloses an automatic defrosting and refrigerating device which comprises a compressor, wherein, a condenser, a throttling device and a evaporator for a refrigerating chamber are communicated at the air exhaust end of the compressor through a refrigerant pipeline in sequence, the air suction end of the compressor is communicated with the air exhaust end of the evaporator for the refrigerating chamber through a refrigerant pipeline, the refrigerant pipeline further comprises a defrosting pipeline, wherein, a defrosting solenoid valve is arranged on the defrosting pipeline, the inlet of the evaporator for the refrigerating chamber is communicated with the inlet of the condenser through the defrosting pipeline, and a liquid storage tank is communicated on the refrigerant pipeline between the evaporator for the refrigerating chamber and the compressor; and the defrosting and refrigerating device further comprises an electric control device and a temperature sensor, wherein, the temperature sensor is arranged on the evaporator for the refrigerating chamber and communicated with the electric control device through a signal, and the electric control device is in control connection with the defrosting solenoid valve. The utility model has simple structure and convenient use and can realize the defrosting function without an electric heater additionally arranged on the evaporator.
Description
Technical field
The utility model relates to kind of a refrigerating plant, and especially a kind of evaporimeter is at an indoor automatic defrosting refrigerating plant.
Background technology
Present evaporimeter is at refrigerating plants such as an indoor refrigerator, refrigerators, because after compressor start operation a period of time, evaporator surface has the frost accumulation, and the time is long more, the frost layer is thick more.Frosting is blocked up in the refrigerating chamber, can directly have influence on effective heat exchange of evaporimeter and refrigerating chamber, has influence on refrigeration, thus cause refrigerator-freezer or the refrigerator refrigeration is poor, refrigeration slowly, increase power consumption.When the evaporator surface frosting surpasses 5mm, promptly should defrost.The automatic defrosting refrigerating plant is to control the defrost electric heater that is installed in evaporator surface by machinery or computer to carry out the timing electricity-heated defrosting at present.This defrost mode need install electric heater additional on the freezer evaporator of refrigerating plant, structure is comparatively complicated, and cost is higher.
The utility model content
Technical problem to be solved of the present utility model provides a kind of automatic defrosting refrigerating plant, need not increase electric heater and can realize defrost function.
For solving the problems of the technologies described above, automatic defrosting refrigerating plant of the present utility model comprises compressor, the compressor air-discharging end is communicated with condenser, throttling arrangement and freezer evaporator successively by refrigerant line, the suction end of compressor is connected by refrigerant line with the freezer evaporator exhaust end, described refrigerant line also includes defroster duct, defroster duct is provided with the defrosting magnetic valve, be connected with condenser inlet by defroster duct before the freezer evaporator inlet, be communicated with on the refrigerant line between freezer evaporator and the compressor and be provided with fluid reservoir; This defrosting refrigerating plant also includes electric control gear and temperature sensor, temperature sensor be located on the freezer evaporator and with the electric control gear signal communication, electric control gear is connected with the defrosting solenoid control.
Defrost pipeline and the low pressure line of being provided with in parallel on the refrigerant line between fluid reservoir and the compressor air suction end; The refrigerant line that the compressor air suction end is connected is provided with two magnetic valves, and the gas outlet of two magnetic valves is connected with compressor, and two inlet ends of two magnetic valves are connected with fluid reservoir by low pressure line and defrost pipeline respectively.
Be connected with refrigerator evaporator before the described freezer evaporator, described defroster duct interface also is communicated with on the refrigerant line between described condenser and the throttling arrangement and is provided with molecular sieve on the refrigerant line between refrigerator evaporator and the freezer evaporator.
Described throttling arrangement is capillary or choke valve, and described electric control gear is single-chip microcomputer or Programmable Logic Controller.
The utlity model has following advantage:
1. the utility model is simple in structure, and is easy to use, need not set up electric heater in addition on evaporimeter and can realize defrost function.
2. being provided with conveniently of two magnetic valves is prone to positions such as freezing stifled defrost water water receiving tank, drainpipe with the defrost line arrangement at refrigerating plant, simultaneously the defrost pipeline can be arranged to the longer pipe road as required, thereby enters the pressure of the cold-producing medium of compressor when reducing defrost.
3. being provided with conveniently of molecular sieve carried out drying and purification to cold-producing medium.
4. throttling arrangement is capillary or choke valve, and is simple in structure, is convenient to make.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, automatic defrosting refrigerating plant of the present utility model comprises compressor 1, single-chip microcomputer 9 and temperature sensor 10, compressor 1 exhaust end 17 is communicated with condenser 3 successively by refrigerant line 2, molecular sieve 15, throttling arrangement 4, refrigerator evaporator 16 and freezer evaporator 5, the suction end 14 of compressor 1 is connected by refrigerant line 2 with freezer evaporator 5 exhaust ends, refrigerant line 2 includes defrost pipeline 11, low pressure line 12 and defroster duct 6, defroster duct 6 is provided with defrosting magnetic valve 7, evaporimeter 5 exhaust ends are connected with evaporimeter 5 inlet ends by defroster duct 6, are communicated with on the refrigerant line 2 between evaporimeter 5 and the compressor 1 to be provided with fluid reservoir 8; Temperature sensor 10 be located on the evaporimeter 5 and with single-chip microcomputer 9 signal communication, single-chip microcomputer 9 and defrosting magnetic valve 7 control connections.The refrigerant line 2 that compressor 1 suction end 14 is connected is provided with two magnetic valves 13, the gas outlet of two magnetic valves 13 is connected with compressor 1, and two inlet ends of two magnetic valves 13 are connected with fluid reservoir 8 by low pressure line 12 and defrost pipeline 11 respectively.Wherein, throttling arrangement 4 can be a capillary, also can be choke valve.
When the utility model operates in refrigerating state, cold-producing medium is discharged from compressor 1 exhaust end 17, is back to the suction end 14 of compressor 1 successively by condenser 3, molecular sieve 15, throttling arrangement 4, refrigerator evaporator 16, freezer evaporator 5, fluid reservoir 8, low pressure line 12 and two magnetic valves 13.In the above-mentioned cyclic process, cold-producing medium condensation in condenser 3 enters evaporimeter 16,5 after throttling arrangement 4 throttling step-downs, and evaporation in evaporimeter 16,5, thereby reduces the temperature in the evaporimeter.
Freezer evaporator 5 keeps low-temperature condition, and its surface can the thicker frost layer of accumulation after the long period.After compressor 1 operation accumulative total reaches 12 hours, send the defrosting control instruction through the judgement of single-chip microcomputer 9 logics.This moment, single-chip microcomputer 9 judged at first whether compressor 1 moves above 10 minutes (this is for the refrigerant gas that guarantees that the compressor discharge temperature is higher, so that defrost is rapid), if operation is no more than 10 minutes, then continued the running refrigerating pattern extremely above 10 minutes; If operation has surpassed 10 minutes and has then moved the defrost pattern, be that single-chip microcomputer 9 control defrosting magnetic valves 7 are opened and made two magnetic valves 13 open defrost pipeline 11, the words that are provided with blower fan as condenser 3 or evaporimeter 16,5 just stop all blower fans, and compressor 1 normally moves.Because throttling arrangement 4 resistances are big, the high-temperature high-pressure refrigerant gas that causes compressor 1 to be discharged directly enters freezer evaporator 5, the frost on its surface is dissolved rapidly, the gas-liquid two-phase cold-producing medium is after fluid reservoir 8 gas-liquid separations then, and the higher refrigerant gas of temperature is back to compressor 1 by defrost pipeline 11.Defrost pipeline 11 easily freezes stifled position (as water receiving tank and drainpipe etc.) through refrigerating plants, thereby has prevented to freeze stifled phenomenon.When the temperature signal that transmits to single-chip microcomputer 9 when temperature sensor 10 surpassed setting value, single-chip microcomputer 9 control defrosting magnetic valves 7 cut out and control two magnetic valves 13 simultaneously and open low pressure line, close defrost pipeline 11, and compressor 1 is out of service, and defrost finishes.If temperature sensor 10 breaks down, detect less than evaporimeter 5 surface temperatures, then single-chip microcomputer 9 is forced defrost pattern out of service behind the defrost certain hour.
After 5 minutes out of service of the defrost pattern, if the temperature of refrigerating chamber and refrigerating chamber is higher than the temperature value of setting, single-chip microcomputer 9 starts compressor 1, and refrigerating plant recovers normal refrigerating operaton.Circulation so repeatedly.
Certainly, the utility model includes but not limited to present embodiment, also can be replaced or the like by Programmable Logic Controller as single-chip microcomputer 9, and this type of conversion all drops within the protection domain of the present utility model.
Claims (4)
1. automatic defrosting refrigerating plant, comprise compressor, the compressor air-discharging end is communicated with condenser, throttling arrangement and freezer evaporator successively by refrigerant line, the suction end of compressor is connected by refrigerant line with the freezer evaporator exhaust end, it is characterized in that: described refrigerant line also includes defroster duct, defroster duct is provided with the defrosting magnetic valve, be connected with condenser inlet by defroster duct before the freezer evaporator inlet, be communicated with on the refrigerant line between freezer evaporator and the compressor and be provided with fluid reservoir; This defrosting refrigerating plant also includes electric control gear and temperature sensor, temperature sensor be located on the freezer evaporator and with the electric control gear signal communication, electric control gear is connected with the defrosting solenoid control.
2. automatic defrosting refrigerating plant according to claim 1 is characterized in that: defrost pipeline and the low pressure line of being provided with in parallel on the refrigerant line between fluid reservoir and the compressor air suction end; The refrigerant line that the compressor air suction end is connected is provided with two magnetic valves, and the gas outlet of two magnetic valves is connected with compressor, and two inlet ends of two magnetic valves are connected with fluid reservoir by low pressure line and defrost pipeline respectively.
3. automatic defrosting refrigerating plant according to claim 1 and 2, it is characterized in that: be connected with refrigerator evaporator before the described freezer evaporator, described defroster duct interface also is communicated with on the refrigerant line between described condenser and the throttling arrangement and is provided with molecular sieve on the refrigerant line between refrigerator evaporator and the freezer evaporator.
4. automatic defrosting refrigerating plant according to claim 3 is characterized in that: described throttling arrangement is capillary or choke valve, and described electric control gear is single-chip microcomputer or Programmable Logic Controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201816248U CN201344688Y (en) | 2008-12-31 | 2008-12-31 | Automatic defrosting and refrigerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201816248U CN201344688Y (en) | 2008-12-31 | 2008-12-31 | Automatic defrosting and refrigerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344688Y true CN201344688Y (en) | 2009-11-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201816248U Expired - Fee Related CN201344688Y (en) | 2008-12-31 | 2008-12-31 | Automatic defrosting and refrigerating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201344688Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213952A (en) * | 2010-04-01 | 2011-10-12 | 烟台圣丰果蔬食品有限公司 | Method for automatically controlling cold storage |
| CN103175355A (en) * | 2011-12-23 | 2013-06-26 | 珠海格力电器股份有限公司 | Air conditioner and exhaust temperature control method used for air conditioner |
| CN103900311A (en) * | 2012-12-28 | 2014-07-02 | 珠海格力电器股份有限公司 | Refrigerating system and freezing and refrigerating device using same |
| CN104864619A (en) * | 2015-06-19 | 2015-08-26 | 苏州医电神空调设备工程有限公司 | Refrigerating system with stepless regulation return air temperature |
| CN106091504A (en) * | 2016-06-17 | 2016-11-09 | 西安交通大学 | A kind of refrigerator with automatic defrosting system and defrosting control method thereof |
| CN104697251B (en) * | 2013-12-10 | 2018-04-27 | 苏州三星电子有限公司 | A kind of refrigerator refrigeration system and refrigerator |
-
2008
- 2008-12-31 CN CNU2008201816248U patent/CN201344688Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213952A (en) * | 2010-04-01 | 2011-10-12 | 烟台圣丰果蔬食品有限公司 | Method for automatically controlling cold storage |
| CN103175355A (en) * | 2011-12-23 | 2013-06-26 | 珠海格力电器股份有限公司 | Air conditioner and exhaust temperature control method used for air conditioner |
| CN103900311A (en) * | 2012-12-28 | 2014-07-02 | 珠海格力电器股份有限公司 | Refrigerating system and freezing and refrigerating device using same |
| CN104697251B (en) * | 2013-12-10 | 2018-04-27 | 苏州三星电子有限公司 | A kind of refrigerator refrigeration system and refrigerator |
| CN104864619A (en) * | 2015-06-19 | 2015-08-26 | 苏州医电神空调设备工程有限公司 | Refrigerating system with stepless regulation return air temperature |
| CN104864619B (en) * | 2015-06-19 | 2017-12-22 | 苏州医电神空调设备工程有限公司 | Can step-less adjustment suction temperature refrigeration system |
| CN106091504A (en) * | 2016-06-17 | 2016-11-09 | 西安交通大学 | A kind of refrigerator with automatic defrosting system and defrosting control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |