阅读说明：本技术 一种冰箱化霜结构及其控制方法 (Refrigerator defrosting structure and control method thereof ) 是由 刘宏宇 于 2020-07-28 设计创作，主要内容包括：本发明公开了一种冰箱化霜结构,涉及冰箱技术领域。本发明包括冰箱箱体；所述冰箱箱体内设置有蒸发器,以及用于对蒸发器进行化霜的化霜加热器；所述冰箱箱体内壁固定连接有化霜风道；所述化霜风道的上端口位于蒸发器上端,且化霜风道的下端口位于蒸发器下端；所述化霜风道内固定连接有化霜风扇。本发明通过设置化霜风道,利用化霜风扇使得蒸发器顶部和底部的空气实现循环,解决了现有蒸发器化霜热量分配不均,化霜效率低的问题。通过实现空气循环,避免了热空气被吹入间室内,导致间室温度升高的问题。(The invention discloses a defrosting structure of a refrigerator, and relates to the technical field of refrigerators. The invention comprises a refrigerator body; an evaporator and a defrosting heater for defrosting the evaporator are arranged in the refrigerator body; the inner wall of the refrigerator body is fixedly connected with a defrosting air channel; the upper port of the defrosting air channel is positioned at the upper end of the evaporator, and the lower port of the defrosting air channel is positioned at the lower end of the evaporator; a defrosting fan is fixedly connected in the defrosting air channel. According to the invention, the defrosting air channel is arranged, and the defrosting fan is utilized to circulate the air at the top and the bottom of the evaporator, so that the problems of uneven defrosting heat distribution and low defrosting efficiency of the existing evaporator are solved. By realizing air circulation, the problem that the temperature of the compartment is increased as hot air is blown into the compartment is avoided.)

1. A refrigerator defrosting structure comprises a refrigerator body (1); an evaporator (2) and a defrosting heater (3) for defrosting the evaporator (2) are arranged in the refrigerator body (1); the method is characterized in that:

the inner wall of the refrigerator body (1) is fixedly connected with a defrosting air channel (4); the upper port of the defrosting air channel (4) is positioned at the upper end of the evaporator (2), and the lower port of the defrosting air channel (4) is positioned at the lower end of the evaporator (2); a defrosting fan (5) is fixedly connected in the defrosting air channel (4).

2. The defrosting structure of a refrigerator according to claim 1, characterized in that the level of the upper port of the defrosting air duct (4) is not lower than the upper surface of the evaporator (2).

3. The defrosting structure of a refrigerator according to claim 1 or 2, characterized in that the horizontal height of the central point of the lower port of the defrosting air duct (4) is not higher than the horizontal height of the geometric central point of the defrosting heater (3).

4. The defrosting structure of a refrigerator according to claim 1, wherein the defrosting fan (5) is used for making the air flow in the defrosting air duct (4) flow from the upper port to the lower port.

5. A control method of a defrosting structure of a refrigerator is characterized by comprising the following steps:

the method comprises the following steps: when the evaporator (2) enters a heating defrosting procedure, the defrosting fan (5) is started to operate synchronously along with the defrosting heater (3);

step two: when the evaporator (2) defrosts and drops water, the defrosting fan (5) stops running synchronously along with the defrosting heater (3);

step three: when the evaporator (2) finishes defrosting and enters refrigeration, the defrosting fan (5) is started to operate, and the refrigeration fan is not started temporarily;

step four: and after T1, the defrosting fan (5) is turned off, and the refrigeration fan is recovered to operate normally.

6. The method for controlling the defrosting structure of the refrigerator according to claim 5, wherein the value of T1 in the fourth step is 1-10 min.

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator defrosting structure and a control method thereof.

Background

The refrigerator is when getting into the defrosting, and the thermal radiation that relies on the defrosting heater of evaporimeter bottom defrosts because the air is in the natural flow state, and at the defrosting in-process, there is great difference in temperature evaporimeter bottom and evaporimeter top meeting, consequently, has the uneven and energy-wasting problem of heat distribution, leads to evaporimeter top and bottom defrosting speed to produce the difference, influences the defrosting efficiency.

Meanwhile, after the defrosting of the refrigerator is finished, although the evaporator is started for refrigeration, a part of hot air still exists at the top of the evaporator bin and cannot be cooled by the evaporator in time. With the operation of the cooling fan, this portion of the hot air is blown into the compartment of the refrigerator, causing a brief rise in the temperature of the air in the compartment. Therefore, the overall refrigeration efficiency of the refrigerator is influenced, and the energy consumption of the refrigerator is increased.

Disclosure of Invention

The invention aims to provide a refrigerator defrosting structure and a control method thereof. By realizing air circulation, the problem that the temperature of the compartment is increased as hot air is blown into the compartment is avoided.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a refrigerator defrosting structure and a control method thereof, comprising a refrigerator body; an evaporator and a defrosting heater for defrosting the evaporator are arranged in the refrigerator body;

the inner wall of the refrigerator body is fixedly connected with a defrosting air channel; the upper port of the defrosting air channel is positioned at the upper end of the evaporator, and the lower port of the defrosting air channel is positioned at the lower end of the evaporator; a defrosting fan is fixedly connected in the defrosting air channel.

Further, the horizontal height of the upper port of the defrosting air channel is not lower than the upper surface of the evaporator.

Further, the horizontal height of the central point of the lower port of the defrosting air channel is not higher than the horizontal height of the geometric central point of the defrosting heater.

Further, the defrosting fan is used for enabling the airflow in the defrosting air channel to flow from the upper port to the lower port.

A control method of a refrigerator defrosting structure comprises the following steps:

the method comprises the following steps: when the evaporator enters a heating defrosting program, the defrosting fan is synchronously started to operate along with the defrosting heater;

step two: when the evaporator defrosts and drops water, the defrosting fan stops running synchronously along with the defrosting heater;

step three: when the evaporator finishes defrosting and enters refrigeration, the defrosting fan is started to operate, and the refrigeration fan is not started temporarily;

step four: and after T1, the defrosting fan is turned off, and the refrigeration fan is recovered to operate normally.

Further, the value range of T1 in the fourth step is 1-10 min.

The invention has the following beneficial effects:

1. according to the invention, the defrosting air channel is arranged, and the defrosting fan is utilized to circulate the air at the top and the bottom of the evaporator, so that the defrosting heat at the top and the bottom of the evaporator is uniformly distributed, the defrosting efficiency is effectively improved, and the defrosting time is reduced.

2. According to the invention, the defrosting air channel is arranged to realize air circulation, so that hot air at the top of the evaporator is circulated to the bottom of the evaporator, the cooling of the hot air in the evaporator bin is accelerated, the situation that the hot air at the top of the evaporator is blown into the compartment when a refrigerating fan operates is avoided, the refrigerating efficiency of the refrigerator is effectively improved, and the energy consumption of the refrigerator is favorably reduced.

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 structure of a refrigerator according to the present invention;

FIG. 2 is a flow chart of a control method of a defrosting structure of a refrigerator according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

the refrigerator comprises a refrigerator body 1, an evaporator 2, a defrosting heater 3, a defrosting air channel 4, a defrosting fan 5, a door body 6, a refrigerating fan 7 and an air outlet 8.

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 relates to a defrosting structure of a refrigerator, which comprises a refrigerator body 1; an evaporator 2 and a defrosting heater 3 for defrosting the evaporator 2 are arranged in the refrigerator body 1, and the defrosting heater 3 is positioned at the bottom of the evaporator 2.

The refrigerator body 1 further comprises a door body 6, a refrigerating fan 7 for sending cold air generated by the evaporator 2 into the compartment, and an air outlet 8 communicated with the compartment.

The inner wall of the refrigerator body 1 is fixedly connected with a defrosting air duct 4; the upper port of the defrosting air channel 4 is positioned at the upper end of the evaporator 2, and the lower port of the defrosting air channel 4 is positioned at the lower end of the evaporator 2; the defrosting fan 5 is fixedly connected in the defrosting air channel 4, and the defrosting fan 5 is used for enabling the air flow in the defrosting air channel 4 to flow from the upper end opening to the lower end opening, namely, the air at the top of the evaporator 2 is pumped in from the upper end opening of the defrosting air channel 4 and blown out from the lower end opening of the defrosting air channel 4 to the bottom of the evaporator 2.

And the horizontal height of the upper port of the defrosting air channel 4 is not lower than the upper surface of the evaporator 2, so that the air at the top of the evaporator 2 can be better pumped into the defrosting air channel 4. Meanwhile, the horizontal height of the central point of the lower port of the defrosting air channel 4 is not higher than the horizontal height of the geometric central point of the defrosting heater 3, so that the defrosting heater 3 heats the circulating air flow when defrosting is performed, and the defrosting effect of the evaporator 2 is improved.

As shown in fig. 2, a method for controlling a defrosting structure of a refrigerator includes the following steps:

the method comprises the following steps: when the evaporator 2 enters a heating defrosting procedure, the defrosting fan 5 is started to operate synchronously along with the defrosting heater 3, so that air flow circulation is realized, and the defrosting speed of the evaporator 2 is increased.

Step two: when the evaporator 2 defrosts and drops water, the defrosting fan 5 stops running synchronously along with the defrosting heater 3, and the water dropping time is waited to end.

Step three: when the evaporator 2 finishes defrosting and enters refrigeration, the defrosting fan 5 is started to operate, and the refrigeration fan is not started temporarily; so that the hot air at the top of the evaporator 2 circulates to the bottom of the evaporator 2 through the defrosting air duct 4, and is cooled and refrigerated through the contact of the evaporator 2. The situation that hot air is blown into the compartment by the cooling fan 7 is avoided.

Step four: and after the operation time T1 of the step three, the defrosting fan 5 is turned off, the refrigeration fan 7 is recovered to operate in a normal program, and cold air is blown into the compartment through the air outlet 8 to realize refrigeration and temperature reduction.

Wherein the value range of T1 is 1-10 min, such as 3min, 5min or 8 min.

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.