CN114322421A - Refrigerator defrosting device and control method - Google Patents
Refrigerator defrosting device and control method Download PDFInfo
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- CN114322421A CN114322421A CN202111670845.8A CN202111670845A CN114322421A CN 114322421 A CN114322421 A CN 114322421A CN 202111670845 A CN202111670845 A CN 202111670845A CN 114322421 A CN114322421 A CN 114322421A
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- evaporator
- defrosting
- heater
- time
- sensor
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- 238000010257 thawing Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000005057 refrigeration Methods 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 230000008020 evaporation Effects 0.000 claims abstract description 12
- 238000001704 evaporation Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 4
- 239000011888 foil Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Abstract
The invention discloses a refrigerator defrosting device and a control method, and relates to the technical field of refrigeration equipment defrosting. The defrosting device comprises a defrosting device body, a sensor and a heat conducting aluminum strip; the defrosting device body comprises an evaporator, a heater, a water receiving tray and a sensor; the heater is fixed at the middle lower part of the evaporator; the evaporator comprises an evaporation pipeline, evaporator fins and an evaporator bracket; the evaporator and the water pan are riveted and fixed through the evaporator bracket; the sensor is fixed on the pipeline of the evaporator through a buckle; one end of the heat-conducting aluminum strip is coiled and fixed on the evaporation pipeline, and the other end of the heat-conducting aluminum strip is guided into the water notch of the water receiving tray. According to the invention, the heat dissipation area of the heater is increased by the fins on the evaporator to reduce the surface temperature, the frost on the water receiving tray is removed by the aid of heat conducted by the conductor, and the sensor for defrosting is triggered by temperature change to control the defrosting device, so that the defrosting effect is improved, the heating time of the heater is reduced, and the energy consumption of the whole machine is reduced.
Description
Technical Field
The invention belongs to the technical field of defrosting of refrigeration equipment, and particularly relates to a defrosting device of a refrigerator and a control method.
Background
The frostless refrigerator has evaporator, defrosting heater, water collecting tray and sensor in the freezing chamber, the sensor is fixed on the upper pipeline of the evaporator, the heater is fixed on the lower part of the evaporator, and the water collecting tray is fixed on the lower part of the freezing chamber.
In order to remove frost from an evaporator, an evaporator defrosting structure is disclosed in which a plurality of heaters are provided at intervals in the height direction of the evaporator. However, this design adds cost and complexity to the installation.
In order to better remove ice around the water pan hole, aluminum foil heaters have been added around the water pan in the industry. The cost is increased by adding the aluminum foil for heating, the production and installation procedures are increased, the total defrosting power is increased, and the energy conservation is not facilitated.
In order to effectively remove frost, steel pipe heaters are adopted in the industry, the heating power is generally high, the power is generally more than 150W, and the surface temperature of the heaters is high during work. Most of the existing refrigerants are R600a, and the refrigerants are flammable and explosive and have potential safety hazards at high temperature.
The existing control principle of the refrigerator is that after an evaporator frosts, a sensor detects that the temperature in the refrigerator reaches a certain temperature and the refrigerating time of a compressor reaches a specified time, a defrosting heating device is started, defrosting time is long in order to ensure that defrosting is complete, and defrosting water flows out of the refrigerator through a water receiving disc hole to achieve the defrosting effect.
Disclosure of Invention
The invention aims to provide a refrigerator defrosting device and a control method, which solve the problems of high defrosting energy consumption and low defrosting efficiency of the existing refrigerator by increasing the heat dissipation area of a heater by fins on an evaporator to reduce the surface temperature, removing frost on a water receiving tray by means of conductor conduction heat and triggering a sensor for defrosting by using temperature change to control the defrosting device.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a refrigerator defrosting device, which comprises a defrosting device body, a sensor and a heat-conducting aluminum strip;
the defrosting device body comprises an evaporator, a heater, a water receiving tray and a sensor; the heater is fixed at the middle lower part of the evaporator;
the evaporator comprises an evaporation pipeline, evaporator fins and an evaporator bracket; the evaporator and the water pan are riveted and fixed through an evaporator bracket;
the sensor is fixed on a pipeline of the evaporator through a buckle;
one end of the heat-conducting aluminum strip is coiled and fixed on the evaporation pipeline, and the other end of the heat-conducting aluminum strip is guided into a water notch of the water receiving tray.
As a preferred technical scheme, the sensor probe is fixed on a pipeline at the upper end of the evaporator through a buckle; the sensor lead and the heater lead are integrated on the connector and connected with the lead in the refrigerator.
As a preferable technical scheme, mounting holes are formed in the evaporator fin and the evaporator bracket; the evaporation pipeline sequentially penetrates through the mounting holes of the evaporator fins and the mounting holes of the evaporator bracket.
As a preferable technical scheme, the heater is fixed on the evaporator through a mounting hole of an evaporator fin and a mounting hole of an evaporator bracket; the heater dissipates heat through the evaporator fins.
As a preferred technical scheme, the lowest end of the water pan is provided with a water outlet; the water outlet is used for flowing out of the defrosting water.
The invention relates to a control method of a refrigerator defrosting device, which comprises the following steps:
step S1: setting an evaporator refrigeration temperature point to be t1, setting a refrigeration stop temperature point to be t2, setting the sum of the refrigeration time of the evaporator from the last time of defrosting by the heater to the next time of defrosting to be n1, setting the heater working time to be n2 during defrosting, and setting the water dropping time of the evaporator to be n 3;
step S2: when the temperature T detected by the sensor is larger than or equal to T1, the evaporator starts to perform refrigeration operation, and the heater does not work. When the compartment sensor detects that the temperature T is less than or equal to T2, the evaporator stops working;
step S3: when the temperature T detected by the sensor is less than or equal to T2, counting the total refrigerating time N of the evaporator after defrosting by the last time of the heater operation, when the N is more than or equal to N2, starting the defrosting by the heater operation, stopping heating after the operation for N2 time, entering the water dropping time N3 of the evaporator, and resetting the total refrigerating time N of the evaporator this time;
step S4: and after the dripping time of the evaporator is over, judging whether the temperature T of the sensor is more than or equal to T1, if T is more than or equal to T1, entering the next refrigeration defrosting period, and if T is less than T1, stopping the operation of the evaporator and the heater until T is more than or equal to T1, and entering the next refrigeration defrosting period.
As a preferable technical solution, in the step S1, the evaporator dropping time n3 is a time from the last time the heater stops operating to the next time the evaporator performs cooling.
The invention has the following beneficial effects:
(1) according to the invention, the heating pipeline penetrates through the fins at the lower part of the evaporator, and the existing fins of the evaporator are utilized, so that the heat dissipation effect of the heater is increased, the surface temperature of the heating pipeline is reduced, and the safety is improved;
(2) the evaporation fin is used for conducting heat to the heating pipe, so that the heat transfer effect is better, the defrosting effect is high, the heating time of the heater is shortened, and the energy consumption of the whole machine is reduced;
(3) the heater removes frost and ice blocks falling from the water receiving tray through the heat-conducting aluminum strip, thereby saving the heater of the water receiving tray, saving materials and reducing the cost;
(4) all parts of the whole defrosting device are manufactured in an evaporator factory, and the defrosting device is directly installed when being assembled on a refrigerator, does not need to be installed separately, and has short installation working hours, improved installation efficiency and improved yield.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an overall structure view of a defrosting apparatus for a refrigerator according to the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a view showing an integrated structure of an evaporator fin and a heater according to the present invention;
in the figure: 1-defrosting device, 2-evaporator, 3-heater, 4-water pan, 5-sensor, 6-heat conducting aluminum strip, 7-evaporator fin, 8-evaporator bracket and 9-buckle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention relates to a defrosting device for a refrigerator, which comprises a defrosting device body 1, a sensor 5, and a heat conducting aluminum strip 6; the defrosting device body 1 comprises an evaporator 2, a heater 3, a water receiving tray 4 and a sensor 5; the heater 3 is fixed at the middle lower part of the evaporator 2, the upper end of the evaporator 2 is not provided with the heater 3, the installation process is simple, and the cost is reduced; the evaporator 2 comprises an evaporation pipeline, evaporator fins 7 and an evaporator bracket 8; the evaporator 2 and the water pan 4 are riveted and fixed through the evaporator bracket 8, and the overall design reduces the production and installation procedures and working hours; the sensor 5 is fixed on the pipeline of the evaporator 2 through a buckle 9; 6 one end coils and fixes on the evaporation pipe, and the other end is leading-in to the notch of water collector 4, and 6 upper ends of heat conduction aluminium strips are designed into the annular, and the 3 pipelines of heater pass the annular of heat conduction aluminium strips 6, and heat conduction aluminium strips 6 insert 4 notches department of water collector 4 bottom. The water pan heater is not arranged at the position of the water pan 4, so that the cost is reduced, the installation process is simplified, and the aim of removing the frost of the water pan can be achieved.
A probe of the sensor 5 is fixed on a pipeline at the upper end of the evaporator 2 through a buckle 9; the sensor 5 and the heater 3 are integrated on the connector through wires and connected with wires in the refrigerator. Mounting holes are formed in the evaporator fins 7 and the evaporator bracket 8; the evaporation pipeline sequentially passes through the mounting holes of the evaporator fins 7 and the mounting holes of the evaporator bracket 8, the evaporator fins 7 and the heater 2 are designed into a whole, so that the surface power of the heater 3 is reduced, the pipeline length of the heater 3 does not need to be lengthened, and the cost of the heater 3 is reduced. The heater 3 is fixed on the evaporator 2 through the mounting hole of the evaporator fin 7 and the mounting hole of the evaporator bracket 8; the heater 3 conducts heat through the evaporator fins 7, the heat dissipation area is increased, the surface temperature is reduced, the safety is improved, the water pan heater is searched, and the cost is reduced. The lowest end of the water receiving plate 4 is provided with a water outlet; the water outlet is used for discharging defrosting water; the heater removes frost and the ice-cube that drops in the water collector through heat conduction aluminium strip, has saved water collector heater, and save material uses reduce cost.
All parts of the whole defrosting device are manufactured and finished in an evaporator factory, and are directly installed when the defrosting device is assembled on a refrigerator, the defrosting device does not need to be installed separately, the installation working hours are short, the installation efficiency is improved, and the yield is improved.
The invention relates to a control method of a refrigerator defrosting device, which comprises the following steps:
step S1: setting an evaporator refrigeration temperature point to be t1, setting a refrigeration stop temperature point to be t2, setting the sum of the refrigeration time of the evaporator from the last time of defrosting by the heater to the next time of defrosting to be n1, setting the heater working time to be n2 during defrosting, and setting the water dropping time of the evaporator to be n 3;
step S2: when the temperature T detected by the sensor is larger than or equal to T1, the evaporator starts to perform refrigeration operation, and the heater does not work. When the compartment sensor detects that the temperature T is less than or equal to T2, the evaporator stops working;
step S3: when the temperature T detected by the sensor is less than or equal to T2, counting the total refrigerating time N of the evaporator after defrosting by the last time of the heater operation, when the N is more than or equal to N2, starting the defrosting by the heater operation, stopping heating after the operation for N2 time, entering the water dropping time N3 of the evaporator, and resetting the total refrigerating time N of the evaporator this time;
step S4: and after the dripping time of the evaporator is over, judging whether the temperature T of the sensor is more than or equal to T1, if T is more than or equal to T1, entering the next refrigeration defrosting period, and if T is less than T1, stopping the operation of the evaporator and the heater until T is more than or equal to T1, and entering the next refrigeration defrosting period.
In step S1, the evaporator dripping time n3 is the time from the last time the heater stops operating to the next time the evaporator cools down.
It should be noted that, in the above system embodiment, each included unit is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
In addition, it is understood by those skilled in the art that all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing associated hardware, and the corresponding program may be stored in a computer-readable storage medium.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A refrigerator defrosting device is characterized by comprising a defrosting device body (1), a sensor (5) and a heat conduction aluminum strip (6);
the defrosting device body (1) comprises an evaporator (2), a heater (3), a water receiving tray (4) and a sensor (5); the heater (3) is fixed at the middle lower part of the evaporator (2);
the evaporator (2) comprises an evaporation pipeline, evaporator fins (7) and an evaporator bracket (8); the evaporator (2) and the water pan (4) are riveted and fixed through an evaporator bracket (8);
the sensor (5) is fixed on a pipeline of the evaporator (2) through a buckle (9);
one end of the heat-conducting aluminum strip (6) is coiled and fixed on the evaporation pipeline, and the other end of the heat-conducting aluminum strip is guided into a water notch of the water receiving tray (4).
2. The defrosting device of a refrigerator according to claim 1, characterized in that the probe of the sensor (5) is fixed on the pipe at the upper end of the evaporator (2) by a buckle (9); and the lead of the sensor (5) and the lead of the heater (3) are integrated on the connector and connected with the lead in the refrigerator.
3. The defrosting device of a refrigerator according to claim 1, characterized in that the evaporator fin (7) and the evaporator bracket (8) are provided with mounting holes; the evaporation pipeline sequentially penetrates through the mounting holes of the evaporator fins (7) and the mounting holes of the evaporator bracket (8).
4. A refrigerator defrosting device according to claim 1 characterized in that the heater (3) is fixed on the evaporator (2) through the mounting hole of the evaporator fin (7) and the mounting hole of the evaporator bracket (8); the heater (3) dissipates heat through evaporator fins (7).
5. The defrosting device of a refrigerator according to claim 1, wherein the lowest end of the water pan (4) is provided with a water outlet; the water outlet is used for flowing out of the defrosting water.
6. A control method of a refrigerator defrosting device is characterized by comprising the following steps:
step S1: setting an evaporator refrigeration temperature point to be t1, setting a refrigeration stop temperature point to be t2, setting the sum of the refrigeration time of the evaporator from the last time of defrosting by the heater to the next time of defrosting to be n1, setting the heater working time to be n2 during defrosting, and setting the water dropping time of the evaporator to be n 3;
step S2: when the temperature T detected by the sensor is larger than or equal to T1, the evaporator starts to perform refrigeration operation, and the heater does not work. When the compartment sensor detects that the temperature T is less than or equal to T2, the evaporator stops working;
step S3: when the temperature T detected by the sensor is less than or equal to T2, counting the total refrigerating time N of the evaporator after defrosting by the last time of the heater operation, when the N is more than or equal to N2, starting the defrosting by the heater operation, stopping heating after the operation for N2 time, entering the water dropping time N3 of the evaporator, and resetting the total refrigerating time N of the evaporator this time;
step S4: and after the dripping time of the evaporator is over, judging whether the temperature T of the sensor is more than or equal to T1, if T is more than or equal to T1, entering the next refrigeration defrosting period, and if T is less than T1, stopping the operation of the evaporator and the heater until T is more than or equal to T1, and entering the next refrigeration defrosting period.
7. The control method of a defrosting apparatus for a refrigerator of claim 6 wherein in the step S1, the evaporator dropping time n3 is the time from the last time the heater stops working to the next time the evaporator cools down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111670845.8A CN114322421A (en) | 2021-12-31 | 2021-12-31 | Refrigerator defrosting device and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111670845.8A CN114322421A (en) | 2021-12-31 | 2021-12-31 | Refrigerator defrosting device and control method |
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| Publication Number | Publication Date |
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| CN114322421A true CN114322421A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111670845.8A Pending CN114322421A (en) | 2021-12-31 | 2021-12-31 | Refrigerator defrosting device and control method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364973A (en) * | 2001-06-07 | 2002-12-18 | Mitsubishi Electric Corp | Refrigerator |
| CN101598483A (en) * | 2008-12-05 | 2009-12-09 | 海信科龙电器股份有限公司 | A kind of defroster control system and refrigerator defrost control method thereof |
| CN101936626A (en) * | 2010-04-08 | 2011-01-05 | 合肥美的荣事达电冰箱有限公司 | Fin type evaporator and refrigerator thereof |
| CN103591751A (en) * | 2013-10-30 | 2014-02-19 | 西安交通大学 | Defrosting system of air cooling refrigerator and defrosting control method thereof |
| CN207741416U (en) * | 2017-10-31 | 2018-08-17 | 合肥华凌股份有限公司 | A kind of the heat conduction probe assembly and its refrigerator defrost component of heating tube |
| CN111397281A (en) * | 2020-04-27 | 2020-07-10 | 合肥美菱物联科技有限公司 | Defrosting control method for air-cooled refrigerator |
| CN111561796A (en) * | 2020-06-11 | 2020-08-21 | 合肥美菱物联科技有限公司 | Evaporator and refrigerator defrosting device thereof |
| US20210239384A1 (en) * | 2020-02-05 | 2021-08-05 | Samsung Electronics Co., Ltd. | Refrigerator |
-
2021
- 2021-12-31 CN CN202111670845.8A patent/CN114322421A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364973A (en) * | 2001-06-07 | 2002-12-18 | Mitsubishi Electric Corp | Refrigerator |
| CN101598483A (en) * | 2008-12-05 | 2009-12-09 | 海信科龙电器股份有限公司 | A kind of defroster control system and refrigerator defrost control method thereof |
| CN101936626A (en) * | 2010-04-08 | 2011-01-05 | 合肥美的荣事达电冰箱有限公司 | Fin type evaporator and refrigerator thereof |
| CN103591751A (en) * | 2013-10-30 | 2014-02-19 | 西安交通大学 | Defrosting system of air cooling refrigerator and defrosting control method thereof |
| CN207741416U (en) * | 2017-10-31 | 2018-08-17 | 合肥华凌股份有限公司 | A kind of the heat conduction probe assembly and its refrigerator defrost component of heating tube |
| US20210239384A1 (en) * | 2020-02-05 | 2021-08-05 | Samsung Electronics Co., Ltd. | Refrigerator |
| CN111397281A (en) * | 2020-04-27 | 2020-07-10 | 合肥美菱物联科技有限公司 | Defrosting control method for air-cooled refrigerator |
| CN111561796A (en) * | 2020-06-11 | 2020-08-21 | 合肥美菱物联科技有限公司 | Evaporator and refrigerator defrosting device thereof |
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Application publication date: 20220412 |