CN220959099U - Defrosting structure of refrigerator evaporator - Google Patents
Defrosting structure of refrigerator evaporator Download PDFInfo
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- CN220959099U CN220959099U CN202322507519.6U CN202322507519U CN220959099U CN 220959099 U CN220959099 U CN 220959099U CN 202322507519 U CN202322507519 U CN 202322507519U CN 220959099 U CN220959099 U CN 220959099U
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- electromagnetic induction
- evaporator
- heat conduction
- conduction plate
- induction coil
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- 238000010257 thawing Methods 0.000 title claims abstract description 35
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 39
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 7
- 238000009499 grossing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Defrosting Systems (AREA)
Abstract
The utility model discloses a defrosting structure of a refrigerator evaporator, which comprises a heat conduction plate and an electromagnetic induction control circuit; the heat conduction plate is fixedly arranged on the rear side surface of the evaporator; the electromagnetic induction control circuit comprises a rectifier bridge circuit, wherein the input end of the rectifier bridge circuit is connected with alternating current, a choke coil, an electromagnetic induction coil and a gate control tube are sequentially connected in series between the output end of the rectifier bridge circuit from the positive electrode to the negative electrode through a circuit, resonance capacitors are connected in parallel at the two ends of the electromagnetic induction coil, and a smooth capacitor is connected between one end of the choke coil connected with the electromagnetic induction coil and one end of the gate control tube connected with the output end of the rectifier bridge circuit; the electromagnetic induction coil is positioned at the rear side of the heat conduction plate and is arranged opposite to the heat conduction plate. The electromagnetic induction control circuit is electrified, the electromagnetic induction coil generates an alternating magnetic field, and an eddy current is formed on the heat conduction plate, so that the heat conduction plate heats and conducts heat to the evaporator, and the defrosting effect is achieved.
Description
Technical Field
The utility model relates to the technical field of refrigerators, in particular to a defrosting structure of a refrigerator evaporator.
Background
At present, after an air-cooled refrigerator runs for a long time, an evaporator for providing cold energy is frosted to influence the transmission of the cold energy, and the refrigerating performance of the refrigerator is reduced, so that in practical application, the evaporator of the refrigerator is required to be frosted regularly, and a heating pipe is arranged at the bottom of the evaporator for defrosting in a conventional defrosting mode. However, defrosting by using a heating pipe has the following problems: the heating pipe has low heating speed and low efficiency, so that the defrosting time of the evaporator is long, the indoor temperature fluctuation of the refrigerator compartment is large, and in addition, the heating pipe has high power, so that the whole energy consumption of the refrigerator is increased. In view of this, there is a need for improvements over the prior art.
Disclosure of utility model
The utility model aims to provide a defrosting structure of a refrigerator evaporator, which aims to at least solve one of the technical problems in the prior art, and adopts the following technical scheme to realize the purposes:
the defrosting structure of the refrigerator evaporator comprises the evaporator, a heat conduction plate and an electromagnetic induction control circuit, wherein the evaporator is positioned at the rear side of a refrigerator liner;
The heat conduction plate is fixedly arranged on the rear side surface of the evaporator;
The electromagnetic induction control circuit comprises a rectifier bridge circuit, wherein the input end of the rectifier bridge circuit is connected with alternating current, a choke coil, an electromagnetic induction coil and a gate control tube are sequentially connected in series between the output end of the rectifier bridge circuit from the positive electrode to the negative electrode through a circuit, resonance capacitors are connected in parallel at the two ends of the electromagnetic induction coil, and a smooth capacitor is connected between one end of the choke coil connected with the electromagnetic induction coil and one end of the gate control tube connected with the output end of the rectifier bridge circuit;
the electromagnetic induction coil is positioned at the rear side of the heat conduction plate and is opposite to the heat conduction plate, the electromagnetic induction control circuit is electrified, the electromagnetic induction coil generates an alternating magnetic field and forms an eddy current on the heat conduction plate, so that the heat conduction plate generates heat and conducts the heat to the evaporator, and the defrosting effect is achieved.
Preferably, the structure further comprises a temperature sensor for detecting the temperature of the evaporator surface.
Preferably, the door control tube is provided with three frequency control gears, and when the refrigerator enters a defrosting mode, the refrigerator control device can select an appropriate frequency control gear according to the temperature control door control tube detected by the temperature sensor.
Preferably, the heat conduction plate is an iron plate.
Preferably, the electromagnetic induction coil is flat spiral.
Preferably, the input end of the rectifier bridge is connected with AC220V.
Compared with the prior art, the utility model has the beneficial effects that:
According to the defrosting structure of the refrigerator evaporator, the alternating magnetic field is generated through the electromagnetic induction control circuit, and the eddy current is formed on the heat conduction plate, so that the heat conduction plate heats and conducts heat to the evaporator, and the defrosting effect is achieved. The defrosting mode has the advantages of high heating speed and high electric energy utilization rate, can effectively shorten the defrosting time of the evaporator, and reduces the temperature fluctuation range in the middle chamber in the defrosting process of the refrigerator.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a circuit diagram of the electromagnetic induction control of the present utility model.
In the figure: 1. an evaporator; 2. a heat conduction plate; 3. a rectifier bridge circuit; 4. a choke coil; 5. an electromagnetic induction coil; 6. gating control; 7. a resonance capacitor; 8. smoothing the capacitance.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the preferred embodiment of the present utility model provides a defrosting structure of an evaporator of a refrigerator in which the evaporator 1 is located at the rear side of the refrigerator liner, i.e., the evaporator 1 is located between the refrigerator case and the refrigerator liner.
The structure comprises: a heat conduction plate 2, an electromagnetic induction control circuit, and a temperature sensor (not shown in the figure).
Wherein, the heat conduction plate is fixedly arranged on the back side surface of the evaporator.
As shown in fig. 2, the electromagnetic induction control circuit includes: the rectifier bridge circuit 3, the choke coil 4, the electromagnetic induction coil 5, the gate control tube 6, the resonance capacitor 7 and the smoothing capacitor 8. Specifically, the input end of the rectifier bridge circuit 3 is connected with AC220V, and the choke coil 4, the electromagnetic induction coil 5 and the gate control tube 6 are sequentially connected in series between the positive electrode and the negative electrode of the output end of the rectifier bridge circuit 3 through lines. The resonance capacitor 7 is connected in parallel with both ends of the electromagnetic induction coil 5. A smoothing capacitor 8 is connected between one end of the choke coil 4 connected with the electromagnetic induction coil 5 and one end of the gating tube 6 connected with the negative electrode of the output end of the rectifier bridge circuit 3.
The electromagnetic induction coil 5 is in a flat spiral shape, is positioned at the rear side of the heat conduction plate 2, is spaced from the heat conduction plate 2, and is arranged opposite to the heat conduction plate 2. The electromagnetic induction control circuit is electrified, the electromagnetic induction coil 5 generates an alternating magnetic field, and an eddy current is formed on the heat conduction plate 2, so that the heat conduction plate 2 heats and conducts heat to the evaporator 1, and the defrosting effect is achieved.
Further, the heat conduction plate 2 adopts an iron plate, and the purpose of the iron plate is to increase magnetic permeability, so that more vortex is formed on the heat conduction plate, and more heat is generated.
The gate control tube 6 is provided with three frequency control gears, namely a low gear, a medium gear and a high gear, and the higher the gear is, the higher the magnetic field alternating frequency generated is. Since the thermal power of the eddy currents formed on the heat transfer plate 2 is proportional to the magnetic field alternating frequency, the higher the gear, i.e. the higher the magnetic field alternating frequency, the greater the thermal power of the eddy currents and the more heat is generated on the heat transfer plate 2.
The temperature sensor is mounted close to or near the surface of the evaporator 1 and is used for detecting the temperature of the surface of the evaporator 1.
When the refrigerator enters a defrosting mode, the refrigerator control device can select a proper frequency control gear according to the temperature control gating tube 6 detected by the temperature sensor, specifically, the refrigerator control device presets three temperature intervals, each temperature interval corresponds to one frequency control gear, and the lower the temperature is, the higher the corresponding gear is. Therefore, when defrosting is realized, energy sources can be saved, the consumption of redundant electric energy is avoided, and meanwhile, the temperature fluctuation range in a chamber is reduced.
In summary, according to the defrosting structure of the refrigerator evaporator provided by the embodiment of the utility model, the electromagnetic induction control circuit generates the alternating magnetic field, and the eddy current is formed on the heat conduction plate, so that the heat conduction plate generates heat and conducts the heat to the evaporator, and the defrosting effect is achieved. The defrosting mode has the advantages of high heating speed and high electric energy utilization rate, can effectively shorten the defrosting time of the evaporator, and reduces the temperature fluctuation range in the middle chamber in the defrosting process of the refrigerator.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (6)
1. The defrosting structure of the refrigerator evaporator comprises the evaporator, wherein the evaporator is positioned at the rear side of a refrigerator liner, and is characterized by further comprising a heat conduction plate and an electromagnetic induction control circuit;
The heat conduction plate is fixedly arranged on the rear side surface of the evaporator;
The electromagnetic induction control circuit comprises a rectifier bridge circuit, wherein the input end of the rectifier bridge circuit is connected with alternating current, a choke coil, an electromagnetic induction coil and a gate control tube are sequentially connected in series between the output end of the rectifier bridge circuit from the positive electrode to the negative electrode through a circuit, resonance capacitors are connected in parallel at the two ends of the electromagnetic induction coil, and a smooth capacitor is connected between one end of the choke coil connected with the electromagnetic induction coil and one end of the gate control tube connected with the output end of the rectifier bridge circuit;
the electromagnetic induction coil is positioned at the rear side of the heat conduction plate and is opposite to the heat conduction plate, the electromagnetic induction control circuit is electrified, the electromagnetic induction coil generates an alternating magnetic field and forms an eddy current on the heat conduction plate, so that the heat conduction plate generates heat and conducts the heat to the evaporator, and the defrosting effect is achieved.
2. The defrosting structure for a refrigerator evaporator as set forth in claim 1, further comprising a temperature sensor for detecting a surface temperature of the evaporator.
3. The defrosting structure of claim 2, wherein the door control tube is provided with three frequency control gears, and when the refrigerator enters the defrosting mode, the refrigerator control device can select an appropriate frequency control gear according to the temperature control door control tube detected by the temperature sensor.
4. The defrosting structure of claim 1, wherein the heat conducting plate is an iron plate.
5. The defrosting structure of claim 1, wherein the electromagnetic induction coil is in a flat spiral shape.
6. The refrigerator evaporator defrosting structure of claim 1, wherein the input end of the rectifier bridge is connected with the AC220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322507519.6U CN220959099U (en) | 2023-09-15 | 2023-09-15 | Defrosting structure of refrigerator evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322507519.6U CN220959099U (en) | 2023-09-15 | 2023-09-15 | Defrosting structure of refrigerator evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220959099U true CN220959099U (en) | 2024-05-14 |
Family
ID=91022213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322507519.6U Active CN220959099U (en) | 2023-09-15 | 2023-09-15 | Defrosting structure of refrigerator evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220959099U (en) |
-
2023
- 2023-09-15 CN CN202322507519.6U patent/CN220959099U/en active Active
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