CN101178281A - Control system of non-frost refrigerator - Google Patents
Control system of non-frost refrigerator Download PDFInfo
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- CN101178281A CN101178281A CNA2007100324829A CN200710032482A CN101178281A CN 101178281 A CN101178281 A CN 101178281A CN A2007100324829 A CNA2007100324829 A CN A2007100324829A CN 200710032482 A CN200710032482 A CN 200710032482A CN 101178281 A CN101178281 A CN 101178281A
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Abstract
The invention discloses a non-frost fridge control system which carries out an effective, periodical, safe and thorough frost-melting in an air-refrigeration fridge. The control system comprises a temperature controller, a timer, a cryostat, a heater, a fan and a compressor. The timer is provided with four pins. Wherein, the power supply pin is connected with a power supply N; the frost-melting pin is connected with the heater; the input end pin is connected with the temperature controller; the output end pin is connected with the fan and the compressor. With a technical proposal provided by the invention, a double protection to a loop of the heater can be realized without a fuser, so as to effectively simplify a control circuit and largely reduce circuit connections, with high reliability, convenient maintenance process and low manufacturing cost.
Description
Technical field
The present invention relates to the refrigerator technical field, especially relate to a kind of non-frost refrigerator control system.
Background technology
The refrigeration of refrigerator all is the mode by the evaporator evaporation cold usually, reaches suitable temperature in order to make refrigerator inside, and evaporimeter itself must be below 0 ℃, and therefore in process of refrigerastion, airborne moisture will condense into frost at evaporator surface.The obstructed passing through fan of direct cooling refrigerator, directly lean on distributing naturally of cold in the refrigerator inside of sealing, wind cooling refrigerator has then been installed fan near evaporimeter, utilize the fan blowing to produce circulative convection under airtight environment, also is furnished with the thin frost of small-sized regularization of heater.Therefore the refrigerating chamber cooling rate of wind cooling refrigerator is fast, and the temperature inside the box is even, need not defrost.
At present, mechanical frost-free refrigerator quantification defrosting system design-mainly adopts Type B and two kinds of situations of A type.
Figure 1 shows that the circuit theory diagrams of the more early stage control system employing of a kind of non-frost refrigerator control system of prior art, defrost timer is a Type B, and the type timer characteristics are: the built-in small machine M one termination output pin of timer.This circuit working principle is as follows:
The first position of defrost timer is at point 16 if power on first, point 17 is connected, then compressor gets electric work, behind the compressor operating certain hour, order defrosting thermostat is connected, the built-in small machine M of timer gets the electric timework that enters, the continuous cooling setting-up time arrives, timer converts a little 16 to, point 15 is connected, and then Defrost heater gets electric work, enters the defrost state, behind the Defrost heater work certain hour, order defrosting thermostat disconnects, and the built-in small machine M of timer electricity again enters and withdraws from timework, withdraws from timing time and arrives, timer converts a little 16 to, point 17 is connected, and enters next circulation.
The first position of defrost timer is connected at point 16, point 15 if power on first, and by Defrost heater, compressor loop, the built-in small machine M of timer gets electric work, enter and withdraw from timing, withdraw from timing time and arrive, timer converts a little 16 to, point 17 is connected, if enter first kind of state.From Type B defrost timer principle Analysis as can be known, the type timer switching motion must be very clear-cut, just almost be simultaneously in disconnection, connection process, if in transfer process, have a power failure or because of the mechanical gear error, can't finish switching motion, " stuck " or enter " dead band " phenomenon, this phenomenon is in case occur, often can not recover voluntarily, cause the complete machine fault.
Figure 2 shows that the no case refrigerator case of another kind system in the prior art, defrost timer is the A type, and the type timer characteristics are: the built-in small machine M one termination input pin of timer.This circuit working principle is as follows:
The first position of defrost timer is at point 19 if power on first, point 20 is connected, then compressor gets electric work, the built-in small machine M of timer also gets the electric timework that enters by Defrost heater simultaneously, the continuous cooling setting-up time arrives, timer converts a little 19 to, point 18 is connected, then Defrost heater gets electric work, enter the defrost state, the built-in small machine M of timer this moment dead electricity is (because of putting 19, point 18 is connected, the defrosting thermostat is connected, with small machine M short circuit) behind the Defrost heater work certain hour, defrost process finishes, and the defrosting thermostat disconnects, the built-in small machine M of timer electricity again enters and withdraws from timework, withdraw from timing time and arrive, timer converts a little 19 to, point 20 is connected, and enters next circulation.
The first position of defrost timer is connected at point 19, point 18 if power on first, pass through Defrost heater, the built-in small machine M of timer gets electric work (the defrosting thermostat that just powered on is in off-state), enter and withdraw from timing, withdrawing from timing time arrives, timer converts a little 19 to, point 20 is connected, if enter first kind of state.
From A type defrost timer principle Analysis as can be known, the built-in small machine M of the type timer has only when point 19, point 18 connections, the defrosting thermostat is connected, dead electricity when promptly entering the defrost state, all the other all times, overcome that the Type B defrost timer has a power failure or, can't finish " stuck " of switching motion or enter " dead band " phenomenon in transfer process because of the mechanical gear error.But circuit control is complicated, and cost is higher.
Summary of the invention
The object of the invention is the deficiency that exists at prior art, provide a kind of impel in the wind cooling refrigerator carry out effectively, periodically, safely, the non-frost refrigerator control system of defrost up hill and dale.
Technical scheme provided by the invention is a kind of non-frost refrigerator control system, comprise temperature controller, timer, thermostat, heater, blower fan and compressor, described timer has 4 pins, wherein the power end pin is connected with power supply, defrost end pin is connected with heater, the input pin is connected with temperature controller, and the output pin is connected with blower fan, compressor.
Described heater one end is connected with timer defrost end pin, and the other end is connected with thermostat, and the other end of thermostat is connected with power supply N.
Described timer is connected duration of work at temperature controller must establish the beginning timing by cable by input pin, power end pin, setting in the cumulative time, the described cumulative time is 6～16 hours, keeps the connection of input pin, output pin, blower fan and compressor operating; Timer has run to setting-up time continuously, then is converted to input pin, the connection of defrost end pin, and blower fan and compressor quit work, and heater is started working.
There is duplicate protection the described heater working time; one heavily protection is for thermostat, and thermostat can be the bimetal leaf temperature controller, also can be with contact magnetic temp-sensitive device for other; utilize it that temperature spot is controlled, described temperature spot is-10 ℃～10 ℃ a arbitrary temp.Heater heats a period of time, and after frost was melted fully, thermostat disconnected, and cut off heater power source; Another heavy protection is maximum defrost time control of timer design, and described maximum defrost time control can be 10～120 minutes as required.When the setting maximum defrost time arrived, timer was connected by input pin, the defrost end pin of defrost state and is converted to input pin, the connection of output pin, finishes defrost and enters next working cycles.
Compared with prior art, the advantage of technical scheme provided by the invention is that this technical scheme can realize heater loop duplicate protection without fuse; thereby effective simplified control circuit, circuit is simple, significantly reduces circuit and connects; high reliability and working service are convenient, and be cheap for manufacturing cost.
Description of drawings
Fig. 1 is the control system figure of the frost-free refrigerator of a prior art;
Fig. 2 is the control system figure of the frost-free refrigerator of another prior art;
Fig. 3 is the control system figure of frost-free refrigerator of the present invention;
Fig. 4 is the non-frost refrigerator control system figure of another specific embodiment of the present invention.
The specific embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
A kind of non-frost refrigerator control system, as shown in Figure 3, comprise temperature controller 1, timer 2, thermostat 3, heater 4, blower fan 5, compressor 6, illuminating lamp 7, power plug wire 8, door switch 9 and wire harness 10, described timer 2 has 4 pins, wherein power end pin 11 is connected with power supply N, defrost end pin 12 is connected with heater 4, input pin 13 is connected with temperature controller, output pin 14 and blower fan 5, compressor 6 connects, wherein heater can be a high efficient radiation formula infrared quartz pipe, described heater 4 one ends are connected with timer 2 defrost end pin 12, and the other end is connected with thermostat 3, and thermostat 3 other ends are connected with power supply N.
Described timer 2 is connected duration of work at temperature controller 1 must establish the beginning timing by cable by input pin 13, power end pin 11, is in 12 hours setting the cumulative time, keeps input pin 13, output pin 14 to connect, blower fan 5, compressor 6 work; Timer 2 has run to setting-up time continuously, then is converted to input pin 13, the connection of defrost end pin 12 pin, and blower fan 5, compressor 6 quit work, and heater 4 is started working.
There is duplicate protection described 4 working times of heater, one heavily protection for thermostat 3, thermostat 3 can be the bimetal leaf temperature controller, also can be with contact magnetic temp-sensitive device for other, utilizes it that temperature spot is controlled, it connects temperature spot is-7 ± 6 ℃, its break-off signal point is 6 ± 3 ℃, and heater 4 heats a period of times, after frost is melted fully, it is 6 ± 3 ℃ of disconnections that thermostat 3 is experienced temperature, cuts off heater 4 power supplys; Another heavy protection designs a maximum defrost time control for timer 2; when the 36 minutes maximum defrost time of setting arrives; timer 2 is connected by input pin 13, the defrost end pin 12 of defrost state and is converted to input pin 13,14 connections of output pin, finishes defrost and enters next working cycles.
Another kind of non-frost refrigerator control system, as shown in Figure 4, the heater of this system is to adopt the conventional aluminium tube heater, because the heating of aluminum pipe formula heater must be close to evaporator surface, the efficiency of heating surface can not show a candle to radiant type infrared quartz pipe, the defrost water capacity of discharging easily at the local regelation of water receiving tank, must increase the water receiving tank heater.
Claims (8)
1. non-frost refrigerator control system, comprise temperature controller, timer, thermostat, heater, blower fan, compressor, it is characterized in that described timer has 4 pins, wherein the power end pin is connected with power supply N, defrost end pin is connected with heater, the input pin is connected with temperature controller, and the output pin is connected with blower fan, compressor.
2. non-frost refrigerator control system according to claim 1 is characterized in that described heater one end is connected with the defrost end pin of timer, and the other end is connected with thermostat, and the thermostat other end is connected with power supply N.
3. non-frost refrigerator control system according to claim 3, it is characterized in that described timer connects duration of work at temperature controller and must establish the beginning timing by cable by input pin, power end pin, setting in the cumulative time, keep input pin, output pin to connect blower fan, compressor operating; Timer has run to setting-up time continuously, then is converted to input pin, the connection of defrost end pin, and blower fan, compressor quit work, and heater is started working.
4. non-frost refrigerator control system according to claim 3 is characterized in that there is duplicate protection the described heater working time, one heavily protection be thermostat, by it temperature spot is controlled, heater heats a period of time, after frost is melted fully, thermostat disconnects, and cuts off heater power source; Another heavy protection is to be maximum defrost time control of timer design; when the setting maximum defrost time arrives; timer is connected by input pin, the defrost end pin of defrost state and is converted to input pin, the connection of output pin, finishes defrost and enters next working cycles.
5. non-frost refrigerator control system according to claim 3 is characterized in that the described cumulative time is 6～16 hours.
6. non-frost refrigerator control system according to claim 4 is characterized in that described temperature spot is-10 ℃～10 ℃.
7. non-frost refrigerator control system according to claim 4 is characterized in that described maximum defrost time control is 10～120 minutes.
8. non-frost refrigerator control system according to claim 4 is characterized in that described thermostat is the bimetal leaf temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100324829A CN101178281A (en) | 2007-12-14 | 2007-12-14 | Control system of non-frost refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100324829A CN101178281A (en) | 2007-12-14 | 2007-12-14 | Control system of non-frost refrigerator |
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| Publication Number | Publication Date |
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| CN101178281A true CN101178281A (en) | 2008-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100324829A Pending CN101178281A (en) | 2007-12-14 | 2007-12-14 | Control system of non-frost refrigerator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052818A (en) * | 2009-10-30 | 2011-05-11 | 泰州乐金电子冷机有限公司 | Method and device for setting frequency-variable refrigerator |
| CN104930792A (en) * | 2015-06-03 | 2015-09-23 | 合肥华凌股份有限公司 | Refrigerator defrosting system, refrigerator defrosting method and refrigerator provided with defrosting system |
| CN105605847A (en) * | 2016-03-04 | 2016-05-25 | 广东格兰仕集团有限公司 | Direct-cooling refrigerator and temperature control method and defrosting method thereof |
| CN109539686A (en) * | 2018-11-20 | 2019-03-29 | 合肥美的电冰箱有限公司 | Control device of refrigerator and refrigerator |
| CN114087842A (en) * | 2021-10-11 | 2022-02-25 | 青岛澳柯玛冷链集成有限公司 | Automatic temperature control method and system for realizing refrigeration and heating |
| CN114322424A (en) * | 2021-12-31 | 2022-04-12 | 合肥美菱物联科技有限公司 | Refrigerator defrosting system and method |
-
2007
- 2007-12-14 CN CNA2007100324829A patent/CN101178281A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052818A (en) * | 2009-10-30 | 2011-05-11 | 泰州乐金电子冷机有限公司 | Method and device for setting frequency-variable refrigerator |
| CN104930792A (en) * | 2015-06-03 | 2015-09-23 | 合肥华凌股份有限公司 | Refrigerator defrosting system, refrigerator defrosting method and refrigerator provided with defrosting system |
| CN105605847A (en) * | 2016-03-04 | 2016-05-25 | 广东格兰仕集团有限公司 | Direct-cooling refrigerator and temperature control method and defrosting method thereof |
| CN109539686A (en) * | 2018-11-20 | 2019-03-29 | 合肥美的电冰箱有限公司 | Control device of refrigerator and refrigerator |
| CN114087842A (en) * | 2021-10-11 | 2022-02-25 | 青岛澳柯玛冷链集成有限公司 | Automatic temperature control method and system for realizing refrigeration and heating |
| CN114322424A (en) * | 2021-12-31 | 2022-04-12 | 合肥美菱物联科技有限公司 | Refrigerator defrosting system and method |
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Open date: 20080514 |