CN109373655B - Defrosting method and refrigeration equipment - Google Patents
Defrosting method and refrigeration equipment Download PDFInfo
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- CN109373655B CN109373655B CN201811246422.1A CN201811246422A CN109373655B CN 109373655 B CN109373655 B CN 109373655B CN 201811246422 A CN201811246422 A CN 201811246422A CN 109373655 B CN109373655 B CN 109373655B
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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Abstract
The invention belongs to the technical field of refrigeration equipment, and discloses a defrosting method and refrigeration equipment. The defrosting method comprises the following steps: adjusting defrosting interval time according to the door opening time of the freezing chamber; adjusting defrosting interval time according to the excessive defrosting times; judging whether the temperature of the refrigeration sensor is greater than a preset refrigeration limit temperature, if not, resetting the overlarge frost timer, if so, judging whether the temperature of the refrigeration sensor is less than the preset refrigeration limit temperature, otherwise, resetting the overlarge frost timer, and if so, starting timing by the overlarge frost timer; judging whether the timing of the oversized frost timer is greater than a preset limit time or not, if so, resetting the oversized frost timer, and entering an oversized frost processing procedure; and judging whether the accumulated running time of the compressor reaches the adjusted defrosting interval time, if so, resetting the oversized defrosting timer, and entering a normal defrosting program. In the invention, if the frost is judged to be excessively large, the frost is immediately melted, the time interval between the frostings is shortened, and the frost is prevented from being excessively large again.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to a defrosting control method for preventing the refrigeration equipment from being frosted too much and the refrigeration equipment.
Background
The defrosting rule of most of domestic refrigerators and other refrigeration equipment is to set a timer, accumulate the working time of a compressor from the end of precooling time, and enter a defrosting program after the compressor runs for a certain time; or the frosting time is redefined by combining the door opening condition of the user, and the frosting time enters the defrosting process when the frosting time is up. Both the two modes adopt a timing mode, but due to uncertainty of user use conditions and possible change of performance of frost, the set frosting time may not be optimal, and the conditions of excessive frost formation and incomplete frost formation may exist, so that readjustment is needed to ensure the refrigeration effect of equipment such as a refrigerator.
Therefore, how to optimize the frosting time and prevent the occurrence of excessive frosting becomes a technical problem to be solved urgently at present.
Disclosure of Invention
In view of the above technical problems in the prior art, an object of the present invention is to provide a defrosting method, which determines whether to immediately defrost or not, whether to increase the turn-on time of a defrosting heater and whether to decrease the defrosting time by determining the conditions of the temperature of a refrigeration sensor and the temperature of a freezing defrosting sensor, so as to solve the problems of excessive frost formation on a freezing device, influence on the refrigeration effect of the device, and reduction in the service life of the device.
It is a further object of the present invention to provide a refrigeration apparatus capable of performing the above defrosting method.
In order to achieve the above object, the present invention adopts the following technical solutions.
The invention provides a defrosting method, which comprises the following steps:
adjusting defrosting interval time according to the door opening time of the freezing chamber;
adjusting defrosting interval time according to the excessive defrosting times;
judging whether the temperature of the refrigeration sensor is greater than a preset refrigeration limit temperature, if not, resetting the overlarge frost timer, if so, judging whether the temperature of the refrigeration sensor is less than the preset refrigeration limit temperature, otherwise, resetting the overlarge frost timer, and if so, starting timing by the overlarge frost timer;
judging whether the timing of the oversized frost timer is greater than a preset limit time or not, and entering an oversized frost processing procedure if the timing of the oversized frost timer is greater than the preset limit time;
and judging whether the accumulated running time of the compressor reaches the adjusted defrosting interval time or not, and if so, entering a normal defrosting procedure.
Further, the defrosting method further comprises the following steps:
and judging and detecting whether the refrigeration sensor, the freezing sensor and the freezing defrosting sensor have faults or not, if so, reminding a user to overhaul the faults of the sensors, and if not, not reminding the user to overhaul the faults of the sensors.
Further, the adjusting of the defrosting interval time according to the number of times of opening the door of the freezing chamber includes:
detecting the total door opening time of the freezing chamber;
if the total time of opening the door of the freezing chamber is less than the first door opening time, the time for adjusting the defrosting interval is reduced by 60 times of the total time of opening the door of the freezing chamber;
and if the total door opening time of the freezing chamber is greater than the first door opening time, adjusting the defrosting interval time to be specific defrosting interval time.
Further, the adjusting of the defrosting interval time according to the excessive defrosting times comprises:
adjusting the time between the initial defrosting intervals to reduce AxT1Wherein A is the number of excessive frost-forming times, T1Adjusting the time for the preset excessive frost.
Further, the excessive frost treatment program comprises:
clearing the defrosting interval time, and clearing the oversized frost timer;
judging whether the excessive frosting times are equal to the maximum excessive frosting times or not, if so, keeping the excessive frosting times unchanged, and if not, increasing the excessive frosting times once;
turning on a defrosting heater;
the defrosting heating time is the sum of the preset basic heating time and the preset excessive defrosting supplementary heating time;
and judging whether the defrosting heating time is finished or whether the temperature of the freezing defrosting sensor is greater than the preset freezing defrosting limiting temperature, if so, turning off the defrosting heater and stopping defrosting.
Further, the excessive frost treatment process further includes:
detecting whether the defrosting heater has a fault, and if so, reminding a user to manually defrost and maintain the defrosting heater;
and judging whether the temperature of the freezing and defrosting sensor is greater than a preset freezing and defrosting limit temperature or not, and stopping defrosting if the temperature of the freezing and defrosting sensor is greater than the preset freezing and defrosting limit temperature.
Further, the normal defrosting procedure comprises the following steps:
clearing the defrosting interval time, and clearing the oversized frost timer;
a heater for starting defrosting;
defrosting heating time is preset basic heating time;
and judging whether the defrosting heating time is finished or whether the temperature of the freezing defrosting sensor is greater than the preset freezing defrosting limiting temperature, if so, turning off the defrosting heater and stopping defrosting.
Further, the normal defrosting procedure further comprises:
detecting whether the defrosting heater has a fault, and if so, reminding a user to manually defrost and maintain the defrosting heater;
and judging whether the temperature of the freezing and defrosting sensor is greater than a preset freezing and defrosting limit temperature or not, and stopping defrosting if the temperature of the freezing and defrosting sensor is greater than the preset freezing and defrosting limit temperature.
Further, the refrigeration limiting temperature is 10 ℃, the freezing limiting temperature is-38 ℃, and the limiting time is 30 min.
Further, the minimum unit of the total door opening time of the freezing chamber is 1s, the first door opening time is 8min, and the specific defrosting interval time is 12 h.
Further, the initial defrosting interval time is 1440min, and the excessive defrosting adjustment time is 120 min.
Further, the maximum excessive frost adhering times are 3, the excessive frost adhering supplementary heating time is 10min, and the freezing defrosting limiting temperature is 10 ℃.
The invention also provides a refrigeration device which can execute the defrosting method.
Further, the freezing equipment is a refrigerator, an ice chest or an ice storage.
The invention judges whether the frost is too large or not according to the temperature of the refrigeration sensor, the temperature of the freezing sensor and the low-temperature duration. If the frost is too large, the frosting treatment procedure is immediately carried out, namely, the frosting is immediately carried out, the defrosting time is properly increased, the defrosting interval time is reduced, the condition of the frost is prevented from being too large again, the refrigeration effect of the equipment is stable, and the service life of the equipment is prolonged.
The invention has the following beneficial effects:
1. if excessive frost is judged to occur, immediately defrosting, and increasing defrosting time to avoid influencing equipment performance;
2. according to the excessive frost times, the defrosting interval time is properly reduced, and the excessive frost is prevented from appearing again;
3. the operation is simple, the refrigeration effect of the equipment is stable, and the service life of the equipment is prolonged.
Drawings
Fig. 1 is a flow chart of defrosting process in the embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the following description is given with reference to specific embodiments and accompanying drawings, and it is obvious that the embodiments in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to these embodiments without any inventive work.
Example 1
The embodiment relates to a refrigerator, and a defrosting process of the refrigerator is shown in fig. 1 and specifically comprises the following steps:
(1) detecting the temperature of each sensor and the door opening condition of the freezing chamber: electrifying to detect the temperature of the refrigeration sensor, the temperature of the freezing sensor and the temperature of the freezing defrosting sensor, and detecting the door opening time of the freezing chamber. If the sensor has a fault, the sensor is operated according to a special fault program to remind a user to maintain the sensor; if the sensor is not faulty, the compressor is operated according to whether the compartment has a refrigeration demand.
(2) Adjusting defrosting interval time according to the door opening time of the freezing chamber and the excessive defrosting times: the detection shows that the number of times of excessive frost is 1, and the door opening time of a freezing chamber is 30 s. Wherein, the interval time of the initial defrosting is 1440min, and the adjustment time of the excessive defrosting is 120 min. The adjusted defrosting interval time is (1440-30-120) min-1290 min.
(3) And (3) temperature judgment: and judging whether the temperature of the refrigeration sensor is greater than a preset refrigeration limit temperature, if not, resetting the overlarge frost timer, if so, judging whether the temperature of the refrigeration sensor is less than the preset refrigeration limit temperature, otherwise, resetting the overlarge frost timer, and if so, starting timing by the overlarge frost timer. Wherein the refrigeration limiting temperature is 10 ℃ and the freezing limiting temperature is-38 ℃. And judging that the temperature of the refrigeration sensor is more than 10 ℃, and the temperature of the freezing sensor is less than-38 ℃, and starting timing by the oversized frost timer.
(4) And (3) time judgment: and judging whether the timing of the oversized frost timer is greater than the preset limit time, if so, resetting the oversized frost timer, and entering an oversized frost processing procedure. Wherein the limiting time is 30 min. And after a period of time, judging that the timing of the oversized frost timer is more than 30min, and entering an oversized frost treatment procedure.
(5) And (3) excessive frost treatment procedure: and clearing the defrosting interval timer and clearing the oversized frost timer. And judging whether the excessive frosting times are equal to the maximum excessive frosting times or not, if so, keeping the excessive frosting times unchanged, and otherwise, increasing the excessive frosting times once. Wherein the maximum number of excessive frosting is 3, and the number of excessive frosting is 2. Firstly, whether the defrosting heater has a fault is detected, if so, a user is reminded to manually defrost and maintain the defrosting heater, whether the temperature of the freezing and defrosting sensor is greater than a preset freezing and defrosting limit temperature is judged, and if so, defrosting is stopped. If not, the defrosting heater is started, and the defrosting heating time is the sum of the preset basic heating time and the preset excessive defrosting supplementary heating time. And when the defrosting heating time is over or the temperature of the freezing defrosting sensor is higher than the preset freezing defrosting limiting temperature, closing the defrosting heater and stopping defrosting. Wherein the limit temperature of freezing defrosting is 10 ℃, and the time of excessive defrosting supplementary heating is 10 min.
Example 2
The present embodiment is continued on the basis of embodiment 1, as shown in fig. 1, the process is as follows:
(1) detecting the temperature of each sensor and the door opening condition of the freezing chamber: electrifying to detect the temperature of the refrigeration sensor, the temperature of the freezing sensor and the temperature of the freezing defrosting sensor, and detecting the door opening time of the freezing chamber. If the sensor has a fault, the sensor is operated according to a special fault program to remind a user to maintain the sensor; if the sensor is not faulty, the compressor is operated according to whether the compartment has a refrigeration demand.
(2) Adjusting defrosting interval time according to the door opening time of the freezing chamber and the excessive defrosting times: the detection shows that the number of times of excessive frost is 2, and the door opening time of the freezing chamber is 500 s. Wherein, the interval time of the initial defrosting is 1440min, and the adjustment time of the excessive defrosting is 120 min. In the adjusting process, the defrosting interval time is adjusted to 12h, namely 720min, and the adjusted defrosting interval time is (720-.
(3) And (3) temperature judgment: and judging whether the temperature of the refrigeration sensor is greater than a preset refrigeration limit temperature, if not, resetting the overlarge frost timer, if so, judging whether the temperature of the refrigeration sensor is less than the preset refrigeration limit temperature, otherwise, resetting the overlarge frost timer, and if so, starting timing by the overlarge frost timer. Wherein the refrigeration limiting temperature is 10 ℃ and the freezing limiting temperature is-38 ℃. And judging that the temperature of the refrigeration sensor is less than 10 ℃, and resetting the oversized frost timer.
(4) And (3) time judgment: and judging whether the timing of the oversized frost timer is greater than the preset limit time, if so, resetting the oversized frost timer, and entering an oversized frost processing procedure. Wherein the limiting time is 30 min. After a period of time, the timing of the frost timer is judged to be still less than 30 min.
(5) And (5) finishing the defrosting interval time: and (4) continuing until the defrosting interval time is finished, namely timing the defrosting interval to 480min, keeping the temperature of the refrigeration sensor to be less than 10 ℃, keeping the temperature of the refrigeration sensor to be more than-38 ℃, and keeping the timing of the oversized frost timer to be less than 30 min. The normal defrosting procedure is entered.
(6) And (3) a normal defrosting procedure: and clearing the defrosting interval timer and clearing the oversized frost timer. Firstly, whether the defrosting heater has a fault is detected, if so, a user is reminded to manually defrost and maintain the defrosting heater, whether the temperature of the freezing and defrosting sensor is greater than a preset freezing and defrosting limit temperature is judged, and if so, defrosting is stopped. If not, the defrosting heater is started, and the defrosting heating time is the preset basic heating time. And when the defrosting heating time is over or the temperature of the frozen defrosting sensor is higher than 10 ℃, the defrosting heater is turned off, and defrosting is stopped.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
1. A defrosting method characterized in that the method comprises:
adjusting defrosting interval time according to the door opening time of the freezing chamber;
adjusting defrosting interval time according to the excessive defrosting times;
judging whether the temperature of the refrigeration sensor is greater than a preset refrigeration limit temperature, if not, resetting the overlarge frost timer, if so, judging whether the temperature of the refrigeration sensor is less than the preset refrigeration limit temperature, otherwise, resetting the overlarge frost timer, and if so, starting timing by the overlarge frost timer;
judging whether the timing of the oversized frost timer is greater than a preset limit time or not, and entering an oversized frost processing procedure if the timing of the oversized frost timer is greater than the preset limit time;
and judging whether the accumulated running time of the compressor reaches the adjusted defrosting interval time or not, and if so, entering a normal defrosting procedure.
2. The defrosting method according to claim 1, further comprising:
and judging and detecting whether the refrigeration sensor, the freezing sensor and the freezing defrosting sensor have faults or not, if so, reminding a user to overhaul the faults of the sensors, and if not, not reminding the user to overhaul the faults of the sensors.
3. The defrosting method according to claim 1, wherein the adjusting of the defrosting interval time according to the door opening time of the freezing chamber comprises:
detecting the total door opening time of the freezing chamber;
if the total time of opening the door of the freezing chamber is less than the first door opening time, the time for adjusting the defrosting interval is reduced by 60 times of the total time of opening the door of the freezing chamber;
and if the total door opening time of the freezing chamber is greater than the first door opening time, adjusting the defrosting interval time to be specific defrosting interval time.
4. The defrosting method according to claim 1, wherein the adjusting of the defrosting interval time according to the excessive frost times comprises:
adjusting the time between the initial defrosting intervals to reduce AxT1Wherein A is the number of excessive frost-forming times, T1Adjusting the time for the preset excessive frost.
5. The defrosting method according to claim 1, wherein the excessive frost treatment process comprises:
clearing the defrosting interval time, and clearing the oversized frost timer;
judging whether the excessive frosting times are equal to the maximum excessive frosting times or not, if so, keeping the excessive frosting times unchanged, and if not, increasing the excessive frosting times once;
turning on a defrosting heater;
the defrosting heating time is the sum of the preset basic heating time and the preset excessive defrosting supplementary heating time;
and judging whether the defrosting heating time is finished or whether the temperature of the freezing defrosting sensor is greater than the preset freezing defrosting limiting temperature, if so, turning off the defrosting heater and stopping defrosting.
6. The defrosting method according to claim 5, wherein the over-blooming treatment procedure further comprises:
detecting whether the defrosting heater has a fault, and if so, reminding a user to manually defrost and maintain the defrosting heater;
and judging whether the temperature of the freezing and defrosting sensor is greater than a preset freezing and defrosting limit temperature or not, and stopping defrosting if the temperature of the freezing and defrosting sensor is greater than the preset freezing and defrosting limit temperature.
7. The defrosting method according to claim 1, wherein the normal defrosting procedure comprises:
clearing the defrosting interval time, and clearing the oversized frost timer;
a heater for starting defrosting;
defrosting heating time is preset basic heating time;
and judging whether the defrosting heating time is finished or whether the temperature of the freezing defrosting sensor is greater than the preset freezing defrosting limiting temperature, if so, turning off the defrosting heater and stopping defrosting.
8. The defrosting method according to claim 7, wherein the normal defrosting procedure further comprises:
detecting whether the defrosting heater has a fault, and if so, reminding a user to manually defrost and maintain the defrosting heater;
and judging whether the temperature of the freezing and defrosting sensor is greater than a preset freezing and defrosting limit temperature or not, and stopping defrosting if the temperature of the freezing and defrosting sensor is greater than the preset freezing and defrosting limit temperature.
9. The defrosting method according to claim 1, wherein the refrigerating limit temperature is 10 ℃, the freezing limit temperature is-38 ℃, and the limit time is 30 min.
10. The defrosting method according to claim 3, wherein the minimum unit of the total time of opening the door of the freezing chamber is 1s, the first door opening time is 8min, and the specific defrosting interval time is 12 h.
11. The defrosting method according to claim 4, wherein the initial defrosting interval time is 1440min, and the excessive defrosting adjustment time is 120 min.
12. The defrosting method according to claim 5, wherein the maximum number of excessive frost is 3, the excessive frost supplement heating time is 10min, and the frozen frost limit temperature is 10 ℃.
13. A freezer apparatus, characterized in that the freezer apparatus is capable of performing the defrosting method according to any one of claims 1 to 12.
14. A freezer apparatus according to claim 13, wherein the freezer apparatus is a refrigerator, freezer or freezer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811246422.1A CN109373655B (en) | 2018-10-24 | 2018-10-24 | Defrosting method and refrigeration equipment |
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| CN201811246422.1A CN109373655B (en) | 2018-10-24 | 2018-10-24 | Defrosting method and refrigeration equipment |
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| CN109373655B true CN109373655B (en) | 2020-04-07 |
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| CN110081655B (en) * | 2019-04-04 | 2021-03-23 | 海信容声(广东)冰箱有限公司 | Refrigeration equipment and evaporator anti-frosting method |
| CN111397281B (en) * | 2020-04-27 | 2021-07-20 | 合肥美菱物联科技有限公司 | Defrosting control method for air-cooled refrigerator |
| CN113899123B (en) * | 2021-10-29 | 2022-12-13 | 四川虹美智能科技有限公司 | Remote control defrosting method and system for intelligent refrigeration equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11311473A (en) * | 1998-04-28 | 1999-11-09 | Toshiba Corp | Method for controlling refrigerator |
| JP2002081844A (en) * | 2000-09-04 | 2002-03-22 | Toshiba Corp | Refrigerator |
| TW200928266A (en) * | 2007-09-27 | 2009-07-01 | Toshiba Kk | Refrigerator |
| JP5622758B2 (en) * | 2012-02-15 | 2014-11-12 | 日立アプライアンス株式会社 | refrigerator |
| CN105157322B (en) * | 2015-09-15 | 2017-06-16 | 合肥美菱股份有限公司 | A kind of frostless wind cooling refrigerator comprising defrost rule |
| CN105698484B (en) * | 2016-04-08 | 2018-09-28 | 海信（山东）冰箱有限公司 | A kind of control method, control device and the refrigerator of single system wind cooling refrigerator |
| JP2018004229A (en) * | 2016-07-08 | 2018-01-11 | 日立アプライアンス株式会社 | Refrigerator |
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