Auxiliary defrosting device of refrigerator

Abstract

The utility model discloses an auxiliary defrosting device for a refrigerator, which is characterized in that an air collecting cover is mounted at the top of a compressor cabin of the refrigerator, a centrifugal fan is mounted in the air collecting cover, an air inlet is formed in the bottom of the air collecting cover, and a first air outlet and a second air outlet are formed in the side edge of the air collecting cover; the first air outlet is communicated with a cavity where a refrigerator evaporator is located through a first air duct, an electric air door is arranged in the first air duct, and the second air outlet is communicated with the outside of the press bin through a second air duct. Heat in the compressor bin is conveyed to the cavity where the evaporator is located through the centrifugal fan, the evaporator is assisted in defrosting, the heat returns to the compressor bin through the defrosting water pipe arranged in the refrigerator, circulation is formed, the defrosting energy consumption of the refrigerator is greatly reduced, and meanwhile the defrosting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator defrosting, in particular to an auxiliary defrosting device for a refrigerator. Background Art

[0002] The refrigerator is a household appliance that has the function of regulating temperature and keeping food fresh. Its appearance has greatly improved people's quality of life and has become one of the indispensable appliances in modern families. At present, in addition to paying attention to the refrigeration performance parameters of the refrigerator, users pay more attention to the energy consumption of the refrigerator. In existing refrigerators, defrosting generally generates heat by heating wires to melt the frost layer on the surface of the evaporator, which leads to high energy consumption of the refrigerator. In addition, heat is generated in the compressor compartment during the operation of the refrigerator. This part of the heat is directly released to the surrounding environment and is not effectively utilized. If this part of the heat is used to assist defrosting, the power consumption of the refrigerator defrosting will be reduced, thereby reducing the overall energy consumption of the refrigerator.

[0003] In view of this, it is necessary to improve the existing technology. Utility Model Content

[0004] The purpose of the utility model is to provide a refrigerator auxiliary defrosting device, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted is as follows:

[0005] A refrigerator auxiliary defrosting device is provided, wherein an air collecting hood is installed on the top of a compressor compartment of the refrigerator, a centrifugal fan is installed in the air collecting hood, an air inlet is provided at the bottom of the air collecting hood, a first air outlet and a second air outlet are provided on the side of the air collecting hood, the first air outlet is connected to a chamber where an evaporator of the refrigerator is located through a first air duct, an electric damper is provided in the first air duct, and the second air outlet is connected to the outside of the compressor compartment through a second air duct.

[0006] Preferably, when the refrigerator is in defrost mode, the centrifugal fan is started and the electric damper is opened, and the centrifugal fan can deliver the hot air in the compressor compartment into the chamber to assist the evaporator in defrosting, and then return to the compressor compartment through the built-in defrost water pipe of the refrigerator.

[0007] Preferably, the electric damper is in a closed state when the refrigerator is stopped and in refrigeration mode.

[0008] Preferably, the condenser of the refrigerator is arranged in the compressor compartment, and the wind collecting hood is located directly above the condenser.

[0009] Preferably, the electric damper is electrically connected to the refrigerator controller.

[0010] Preferably, the centrifugal fan is connected to a refrigerator controller.

[0011] Preferably, the first air outlet and the second air outlet are arranged bilaterally symmetrically.

[0012] Preferably, the compressor of the refrigerator is arranged in a compressor compartment.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses an auxiliary defrosting device for a refrigerator, which transmits heat in a compressor compartment to a chamber where an evaporator is located through a centrifugal fan to assist the evaporator in defrosting, and returns the heat to the compressor compartment through a defrosting water pipe built into the refrigerator to form a cycle, thereby greatly reducing the defrosting energy consumption of the refrigerator and improving the defrosting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional schematic diagram of the utility model device and a refrigerator.

[0017] In the figure: 1. Wind hood; 2. Centrifugal fan; 3. Electric damper; 4. Compressor; 5. Condenser; 6. Compressor compartment; 7. First air duct; 8. Evaporator; 9. Second air duct; 10. Chamber; 11. Defrosting water pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] In addition, in the description of the present invention, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 As shown, a preferred embodiment of the utility model provides a refrigerator auxiliary defrosting device, which includes an air collecting hood 1, a centrifugal fan 2 and an electric air door 3.

[0022] The compressor 4 and condenser 5 of the refrigerator are both installed in the compressor compartment 6. The air collecting hood 1 is located in the compressor compartment 6, specifically directly above the condenser 5. The air collecting hood 1 is fixedly installed on the top wall of the compressor compartment 6 by bolts. The centrifugal fan 2 is fixedly installed in the air collecting hood 1 by bolts. The centrifugal fan 2 is electrically connected to the controller of the refrigerator, and the controller can control the start and stop of the centrifugal fan 2.

[0023] An air inlet is provided at the bottom of the air collecting hood 1, and a first air outlet and a second air outlet are provided on the side of the air collecting hood 1. The first air outlet and the second air outlet are arranged symmetrically on the left and right. The centrifugal fan 2 can suck the air in the compressor chamber 6 into the air collecting hood 1 from the air inlet, and then discharge it from the first air outlet and the second air outlet.

[0024] The first air outlet is connected to the chamber where the refrigerator evaporator 8 is located through the first air duct 7. An electric damper 3 is arranged in the first air duct 7. The electric damper 3 is electrically connected to the refrigerator controller, and the controller can control the opening and closing of the electric damper 3. The second air outlet is connected to the outside of the compressor compartment 6 through the second air duct 9.

[0025] When the refrigerator is in defrost mode, the controller controls the centrifugal fan 2 to start. In addition, the electric damper 3 is controlled to open. Driven by the centrifugal fan 2, the hot air in the compressor compartment 6 enters the wind collecting hood 1, and a part of the hot air enters the chamber 10 where the refrigerator evaporator 8 is located through the first air duct 7 to assist the evaporator 8 in defrosting. The air in the chamber 10 returns to the compressor compartment 6 through the built-in defrost water pipe 11 of the refrigerator to form a cycle. Of course, another part of the hot air is discharged into the surrounding environment through the second air duct 7.

[0026] When the refrigerator is in a stopped state, the controller controls the electric damper 3 to close, and the centrifugal fan 2 is started or shut down according to the refrigerator control logic.

[0027] When the refrigerator is in cooling mode, the controller controls the electric damper 3 to close and controls the centrifugal fan 2 to start. At this time, driven by the centrifugal fan 2, the hot air in the compressor chamber 6 enters the air collecting hood 1 and is discharged into the surrounding environment through the second air duct 9.

[0028] To sum up, the auxiliary defrosting device for a refrigerator described in an embodiment of the utility model transfers the heat in the compressor compartment to the chamber where the evaporator is located through a centrifugal fan, assists the evaporator in defrosting, and returns to the compressor compartment through the built-in defrosting water pipe of the refrigerator to form a circulation, which greatly reduces the defrosting energy consumption of the refrigerator and improves the defrosting efficiency.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A refrigerator auxiliary defrosting device, characterized in that: An air collecting hood is installed on the top of the compressor compartment of the refrigerator, a centrifugal fan is installed in the air collecting hood, an air inlet is provided at the bottom of the air collecting hood, a first air outlet and a second air outlet are provided on the side of the air collecting hood, the first air outlet is connected to the chamber where the refrigerator evaporator is located through a first air duct, an electric damper is provided in the first air duct, and the second air outlet is connected to the outside of the compressor compartment through a second air duct.

2. The refrigerator auxiliary defrosting device according to claim 1, characterized in that: When the refrigerator is in defrost mode, the centrifugal fan starts and the electric damper opens. The centrifugal fan can send the hot air in the compressor compartment into the chamber to assist the evaporator in defrosting, and then return to the compressor compartment through the built-in defrost water pipe of the refrigerator.

3. The refrigerator auxiliary defrosting device according to claim 1, characterized in that: The electric damper is closed when the refrigerator is stopped and in cooling mode.

4. The refrigerator auxiliary defrosting device according to claim 1, characterized in that: The condenser of the refrigerator is arranged in the compressor compartment, and the wind collecting hood is located directly above the condenser.

5. The refrigerator auxiliary defrosting device according to claim 1, characterized in that: The electric air door is electrically connected to the refrigerator controller.

6. The refrigerator auxiliary defrosting device according to claim 1, characterized in that: The centrifugal fan is connected to the refrigerator controller.

7. The refrigerator auxiliary defrosting device according to claim 1, characterized in that: The first air outlet and the second air outlet are arranged symmetrically.

8. The refrigerator auxiliary defrosting device according to claim 1, characterized in that: The refrigerator's compressor is installed in the compressor compartment.

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