CN111023681A - Refrigerator defrosting device and method thereof - Google Patents
Refrigerator defrosting device and method thereof Download PDFInfo
- Publication number
- CN111023681A CN111023681A CN201911393039.3A CN201911393039A CN111023681A CN 111023681 A CN111023681 A CN 111023681A CN 201911393039 A CN201911393039 A CN 201911393039A CN 111023681 A CN111023681 A CN 111023681A
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- China
- Prior art keywords
- temperature
- controller
- heating film
- defrosting
- refrigerator
- 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
- 238000010257 thawing Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000005057 refrigeration Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 abstract description 3
- 239000010439 graphite Substances 0.000 abstract description 3
- -1 graphite alkene Chemical class 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/008—Defroster control by timer
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a refrigerator defrosting device and a method thereof, and relates to the technical field of refrigerator accessories. In the invention: the refrigeration pipeline is arranged in the middle of the mounting seat; a plurality of radiating fins are arranged on the pipeline of the refrigeration pipeline side by side; a heating film is wound on the outer side surface of the refrigeration pipeline, and graphene is added in the preparation process; a temperature sensor is arranged above the evaporator assembly; the temperature sensor senses temperature data information of the evaporator and transmits the temperature data information to the controller; the controller controls the power switch of the heating film; and a temperature fuse is arranged between the controller and the heating film. The graphene material with good heat transfer performance is used as a heat transfer medium and is also a heating source. Because the source that generates heat and frost direct contact utilize heat conduction to carry out heat transfer, simultaneously because graphite alkene is hot good conductor, realized quick defrosting to because the source that generates heat and frost layer direct contact do not need intermediate medium indirect heat transfer, consequently the utilization ratio of the energy is higher, the whole energy consumption of refrigerator reduces.
Description
Technical Field
The invention belongs to the technical field of refrigerator accessories, and particularly relates to a refrigerator defrosting device and a method thereof.
Background
Refrigerator defrosting is a problem that must be considered in a refrigerator control system, particularly in an air-cooled refrigerator control system. If the frost layer is too thick, the refrigeration efficiency is reduced, and the energy consumption is increased. At present, the frostless refrigerator on the market generally adopts a timing or non-timing automatic defrosting method to achieve the purpose of automatic defrosting. The automatic defrosting method generally adopts a mode of installing a steel tube heater at the bottom of the finned evaporator. The defrosting utilizes the energization and heating of a steel pipe heater to increase the temperature of the air around the fin evaporator, and the defrosting on the fin evaporator achieves the aim of defrosting by absorbing the heat of the high-temperature air around.
The defrosting method utilizes air as a heat transfer medium to transfer heat in a heat convection mode. Because air is a poor heat conductor, the defrosting mode is slow in speed and high in energy consumption.
Disclosure of Invention
The invention aims to provide a refrigerator defrosting device and a refrigerator defrosting method. Because the source that generates heat and frost direct contact utilize heat conduction to carry out heat transfer, simultaneously because graphite alkene is hot good conductor, realized quick defrosting to because the source that generates heat and frost layer direct contact do not need intermediate medium indirect heat transfer, consequently the utilization ratio of the energy is higher, the whole energy consumption of refrigerator reduces.
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 an evaporator assembly; the evaporator assembly comprises a mounting seat and a refrigeration pipeline, and the refrigeration pipeline is arranged in the middle of the mounting seat; a plurality of radiating fins are arranged on the pipeline of the refrigeration pipeline side by side; a heating film is wound on the outer side surface of the refrigeration pipeline; an electric heating assembly is arranged in the heating film, and graphene is added into the heating film in the preparation process;
a temperature sensor is arranged above the evaporator assembly; the temperature sensor senses temperature data information of the evaporator and transmits the temperature data information to the controller; the controller controls an electrifying switch of the heating film; a temperature fuse is also arranged between the controller and the heating film;
when the temperature is lower than a set threshold value, the controller controls the heating film to operate to heat and defrost the frost layers on the refrigeration pipeline and the radiating fins.
A refrigerator defrosting method comprises the following steps:
the method comprises the following steps: when the defrosting program is started, the work of other electric appliances in the refrigerator is stopped, wherein the other electric appliances comprise a compressor and a fan motor;
step two: the controller controls the heating film to start to be electrified to defrost the frost layers on the refrigeration pipeline and the radiating fins;
step three: the temperature sensor continuously detects the temperature of the evaporator during defrosting and transmits the temperature to the controller, and the controller simultaneously accumulates defrosting and heating time;
step four: during defrosting, the temperature sensed by the temperature sensor continuously rises, and when the temperature sensed by the temperature sensor reaches a certain preset temperature or the accumulated defrosting time reaches a certain preset time, the controller cuts off the power supply of the heating film and stops heating;
step five: waiting for a period of time, and allowing water on the evaporator to drop into a water receiving tray outside the box body; and when the water dripping time is up, the refrigerator enters a normal refrigeration program according to the current state, wherein the water dripping time is 1-10 min.
The invention has the following beneficial effects:
the invention utilizes the graphene material with good heat transfer performance as a heat transfer medium and is also a heating source. Because the source that generates heat and frost direct contact utilize heat conduction to carry out heat transfer, simultaneously because graphite alkene is hot good conductor, realized quick defrosting to because the source that generates heat and frost layer direct contact do not need intermediate medium indirect heat transfer, consequently the utilization ratio of the energy is higher, the whole energy consumption of refrigerator reduces.
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 a schematic structural view of a defrosting apparatus for a refrigerator;
fig. 2 is a flow chart of a defrosting method of a refrigerator.
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.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1, the present invention is a defrosting apparatus for a refrigerator, including an evaporator assembly; the evaporator assembly comprises a mounting seat 1 and a refrigeration pipeline 2, and the refrigeration pipeline 2 is arranged in the middle of the mounting seat 1; a plurality of radiating fins 3 are arranged on the pipeline of the refrigerating pipeline 2 side by side; a heating film 4 is wound on the outer side surface of the refrigeration pipeline 2; an electric heating assembly is arranged in the heating film 4, and graphene is added into the heating film 4 in the preparation process;
a temperature sensor 7 is arranged above the evaporator assembly; the temperature sensor 7 senses temperature data information of the evaporator and transmits the temperature data information to the controller 6; the controller 6 controls the power-on switch of the heating film 4; a temperature fuse 5 is also arranged between the controller 6 and the heating film 4;
when the temperature is lower than the set threshold value, the controller 6 controls the heating film 4 to operate to heat and defrost the frost layer on the refrigeration pipeline 2 and the radiating fin 3.
As shown in fig. 2, a defrosting method for a refrigerator includes the following steps:
the method comprises the following steps: when the defrosting program is started, the work of other electric appliances in the refrigerator is stopped, wherein the other electric appliances comprise a compressor and a fan motor;
step two: the controller 6 controls the heating film 4 to start to be electrified to defrost the frost layers on the refrigeration pipeline 2 and the radiating fins 3;
step three: the temperature sensor 7 continuously detects the temperature of the evaporator during defrosting and transmits the temperature to the controller 6, and the controller 6 simultaneously accumulates defrosting and heating time;
step four: during defrosting, the temperature sensed by the temperature sensor 7 continuously rises, and when the temperature sensed by the temperature sensor 7 reaches a certain preset temperature, the preset temperature is 8 ℃; or when the accumulated defrosting time reaches a certain preset time, the controller 6 cuts off the power supply of the heating film 4 and stops heating;
step five: waiting for a period of time, and allowing water on the evaporator to drop into a water receiving tray outside the box body; and when the water dripping time is up, the refrigerator enters a normal refrigeration program according to the current state, wherein the water dripping time is 1-10 min.
In order to increase the safety of the defrosting heating system, a temperature fuse 5 can be connected in series in the defrosting heating system, and when the ambient air temperature exceeds a certain limit value, the fuse wire is fused, so that heating is stopped. One or more temperature sensors can be added in the defrosting system to sense the air temperature of different parts, each temperature sensor is provided with an independent temperature limit value, and when the detected air temperature exceeds the preset temperature limit value, the control panel cuts off the defrosting heating power supply and stops heating.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
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 (2)
1. A refrigerator defrosting device comprises an evaporator assembly; the method is characterized in that: the evaporator assembly comprises a mounting seat (1) and a refrigeration pipeline (2), and the refrigeration pipeline (2) is arranged in the middle of the mounting seat (1); a plurality of radiating fins (3) are arranged on the pipeline of the refrigerating pipeline (2) side by side; a heating film (4) is wound on the outer side surface of the refrigeration pipeline (2); an electric heating assembly is arranged in the heating film (4), and graphene is added into the heating film (4) in the preparation process;
a temperature sensor (7) is arranged above the evaporator assembly; the temperature sensor (7) senses temperature data information of the evaporator and transmits the temperature data information to the controller (6); the controller (6) controls an electrified switch of the heating film (4); a temperature fuse (5) is also arranged between the controller (6) and the heating film (4);
when the temperature is lower than a set threshold value, the controller (6) controls the heating film (4) to operate to heat and defrost the frost layers on the refrigeration pipeline (2) and the radiating fins (3).
2. The refrigerator defrosting method is characterized by comprising the following steps:
the method comprises the following steps: when the defrosting program is started, the work of other electric appliances in the refrigerator is stopped, wherein the other electric appliances comprise a compressor and a fan motor;
step two: the controller 6 controls the heating film (4) to start to be electrified to defrost the frost layer on the refrigeration pipeline (2) and the radiating fin (3);
step three: the temperature sensor (7) continuously detects the temperature of the evaporator during defrosting and transmits the temperature to the controller (6), and the controller (6) simultaneously accumulates defrosting heating time;
step four: during defrosting, the temperature sensed by the temperature sensor (7) continuously rises, and when the temperature sensed by the temperature sensor (7) reaches a certain preset temperature or the accumulated defrosting time reaches a certain preset time, the controller (6) cuts off the power supply of the heating film (4) and stops heating;
step five: waiting for a period of time, and allowing water on the evaporator to drop into a water receiving tray outside the box body; and when the water dripping time is up, the refrigerator enters a normal refrigeration program according to the current state, wherein the water dripping time is 1-10 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911393039.3A CN111023681A (en) | 2019-12-30 | 2019-12-30 | Refrigerator defrosting device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911393039.3A CN111023681A (en) | 2019-12-30 | 2019-12-30 | Refrigerator defrosting device and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111023681A true CN111023681A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911393039.3A Pending CN111023681A (en) | 2019-12-30 | 2019-12-30 | Refrigerator defrosting device and method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111023681A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393509A (en) * | 2020-11-25 | 2021-02-23 | 珠海格力电器股份有限公司 | Defrosting device, evaporator, defrosting control method of evaporator and refrigerator |
| CN112595015A (en) * | 2020-12-07 | 2021-04-02 | 珠海格力电器股份有限公司 | Refrigerator control method and device, refrigerator, storage medium and processor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202613875U (en) * | 2012-05-21 | 2012-12-19 | 海尔集团技术研发中心 | Defrosting device of refrigerator and refrigerator |
| 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 |
| CN206637895U (en) * | 2017-02-13 | 2017-11-14 | 合肥美的电冰箱有限公司 | Evaporator with defrosting function |
| CN208704264U (en) * | 2018-08-13 | 2019-04-05 | 长虹美菱股份有限公司 | A kind of face heater for refrigerator defrost |
| CN208936332U (en) * | 2018-08-28 | 2019-06-04 | 珠海格力电器股份有限公司 | Air condensing units and air conditioner |
| CN209399629U (en) * | 2018-12-14 | 2019-09-17 | 合肥美的电冰箱有限公司 | A kind of refrigerator of highly effective refrigeration |
| CN110285610A (en) * | 2019-06-11 | 2019-09-27 | 合肥美的电冰箱有限公司 | It is vented evaporation tube unit, drip tray and refrigeration equipment |
| CN110285604A (en) * | 2019-06-13 | 2019-09-27 | 合肥美的电冰箱有限公司 | Evaporator assemblies and refrigeration equipment with it |
| CN209819992U (en) * | 2018-12-14 | 2019-12-20 | 合肥美的电冰箱有限公司 | Refrigeration device |
-
2019
- 2019-12-30 CN CN201911393039.3A patent/CN111023681A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202613875U (en) * | 2012-05-21 | 2012-12-19 | 海尔集团技术研发中心 | Defrosting device of refrigerator and refrigerator |
| 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 |
| CN206637895U (en) * | 2017-02-13 | 2017-11-14 | 合肥美的电冰箱有限公司 | Evaporator with defrosting function |
| CN208704264U (en) * | 2018-08-13 | 2019-04-05 | 长虹美菱股份有限公司 | A kind of face heater for refrigerator defrost |
| CN208936332U (en) * | 2018-08-28 | 2019-06-04 | 珠海格力电器股份有限公司 | Air condensing units and air conditioner |
| CN209399629U (en) * | 2018-12-14 | 2019-09-17 | 合肥美的电冰箱有限公司 | A kind of refrigerator of highly effective refrigeration |
| CN209819992U (en) * | 2018-12-14 | 2019-12-20 | 合肥美的电冰箱有限公司 | Refrigeration device |
| CN110285610A (en) * | 2019-06-11 | 2019-09-27 | 合肥美的电冰箱有限公司 | It is vented evaporation tube unit, drip tray and refrigeration equipment |
| CN110285604A (en) * | 2019-06-13 | 2019-09-27 | 合肥美的电冰箱有限公司 | Evaporator assemblies and refrigeration equipment with it |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393509A (en) * | 2020-11-25 | 2021-02-23 | 珠海格力电器股份有限公司 | Defrosting device, evaporator, defrosting control method of evaporator and refrigerator |
| CN112595015A (en) * | 2020-12-07 | 2021-04-02 | 珠海格力电器股份有限公司 | Refrigerator control method and device, refrigerator, storage medium and processor |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200417 |