CN109357468B

CN109357468B - Refrigerator air duct assembly

Info

Publication number: CN109357468B
Application number: CN201811424501.7A
Authority: CN
Inventors: 张波; 李乾坤
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2023-12-22
Anticipated expiration: 2038-11-27
Also published as: CN109357468A

Abstract

The invention provides a refrigerator air duct assembly, which comprises a first freezing air duct, a second freezing air duct and a freezing mask, wherein a return air duct is arranged at the rear part of the first freezing air duct and is matched with a first air inlet, a first air door and a fan on the second freezing air duct to form a return air duct, and the return air duct and the refrigerating air duct of the refrigerator air duct assembly are independent from each other, so that heat generated by temperature rise during defrosting of an evaporator room returns to the lower part of the evaporator through the return air duct. The invention utilizes the heat generated when the refrigerator is defrosted to defrost, thereby avoiding the rise of the room temperature caused by the hot air entering the refrigerating room.

Description

Refrigerator air duct assembly

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator air duct assembly.

Background

With the increasing popularity of air-cooled refrigerators and air-cooled refrigerators, how to effectively improve the air duct efficiency and reduce the temperature fluctuation in compartments has become a major problem in the refrigerator industry. The air-cooled refrigerator is heated by the heating wire during defrosting, so that the temperature of the air in the evaporator cavity is increased, and natural convection enters the refrigeration compartment through the air outlet of the refrigeration air duct, or radiation conduction is carried out, so that the temperature rise in the refrigeration compartment is greatly fluctuated, and the storage of food and the increase of the energy consumption of the whole machine are affected.

Disclosure of Invention

The present invention aims to solve the above technical problems at least to a certain extent, and therefore, the present invention proposes a refrigerator air duct assembly.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a refrigerator wind channel subassembly, installs on refrigerator box inner bag, forms the cavity between rear lower part and the box inner bag, as the evaporimeter cavity, the evaporimeter install in the evaporimeter cavity, refrigerator wind channel subassembly's structure sets up to:

the rear end of a freezing mask of the internal cavity is open, a second freezing air duct is arranged in the rear end of the freezing mask, the first freezing air duct is assembled at the open end of the freezing mask, the upper part of the rear end of the first freezing air duct protrudes backwards to form a -shaped inner cavity to serve as a return air duct, a transverse channel above the return air duct serves as an air inlet area, and bottom openings of vertical channels at two sides serve as first air outlets and are communicated with an evaporator cavity;

the refrigerating face cover is provided with a plurality of air outlets for supplying air to the refrigerating compartment, an air inlet duct is arranged in a shell of the refrigerating air duct II, a plurality of second air outlets are correspondingly arranged on the shell according to the positions of the air outlets and are communicated with the air inlet duct, a fan is arranged in a mounting hole at the upper part of the rear end of the refrigerating air duct II, a first air inlet and a second air inlet are arranged above the fan, a first air door is arranged in the first air inlet and is communicated with an air inlet area opposite to the air return duct, and a second air door is arranged in the second air inlet and is communicated with the air inlet duct; an opening is arranged at the position of the first freezing air duct corresponding to the mounting hole and is communicated with the evaporator chamber;

the refrigerator air duct component forms an air return duct by a first air inlet, an air return duct, a first air outlet and an evaporator chamber, and the on/off of the air return duct is controlled by a first air door; the second air inlet, the air inlet duct, the plurality of second air outlets and the plurality of air outlets form a refrigerating air path for supplying air to the refrigerating compartment by the evaporator chamber, the refrigerating air path is independent from the air return air path, and the second air door controls the on/off of the air inlet air path.

The invention is also characterized in that:

when the refrigerator is used for refrigerating, the first air door is closed, and the second air door is opened; when the refrigerator is defrosted, the first air door is opened, and the second air door is closed.

The outer edge of the open end of the freezing mask is provided with a plurality of fixing buckles which are matched with a plurality of bayonets on the inner container of the box body to form a clamping structure between the freezing mask and the inner container of the box body.

The transverse channel of the return air duct extends above the evaporator in a suspending mode, and the evaporator is located between the vertical channels on two sides.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the refrigerating air passage and the return air passage which are independent from each other are arranged, and the first air door and the second air door are additionally arranged, so that the refrigerating air passage and the heat return air passage are separated, and heat generated by temperature rise when the return air passage is used for defrosting the evaporator chamber is returned to the lower part of the evaporator through the return air passage, so that the heat can be fully utilized, defrosting time is shortened, defrosting efficiency is improved, and the heat generated by heating wires in the defrosting process can be prevented from entering the refrigerating chamber to cause temperature rise in the defrosting process of the refrigerating chamber.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic exploded view of the present invention;

FIG. 3 is a schematic diagram of a second embodiment of the refrigerating duct of the present invention;

FIG. 4 is a schematic cross-sectional view of the structure of FIG. 2 in the direction A-A;

FIG. 5 is a schematic cross-sectional view of the structure in the direction B-B in FIG. 3;

fig. 6 is a schematic view of an assembly structure of the present invention with a refrigerator.

In the figure, 1 a face mask is frozen; 2, an air outlet nozzle; 3, fixing the buckle; 4, freezing the second air duct; 5, a second air outlet; 6, an air inlet duct; 7, a fan; 8, a first air door; 9, a second air door; 10 freezing the first air duct; 11 return air duct; 12 a first air outlet; 13, a box body inner container; 14 an evaporator; 15 evaporator chamber.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 6, the refrigerator air duct assembly of the present embodiment is mounted on a refrigerator inner container 13, a cavity is formed between a rear lower portion and the refrigerator inner container 13, and is used as an evaporator chamber 15, an evaporator 14 is mounted in the evaporator chamber 15, and the refrigerator air duct assembly has a structure that:

the rear end of the freezing mask 1 with the internal cavity is open, a freezing air duct II 4 is arranged in the freezing mask 1, a freezing air duct I10 is assembled at the open end of the freezing mask 1, the upper part of the rear end is backwards protruded to form a -shaped inner cavity to serve as a return air duct 11, a transverse channel above the return air duct 11 serves as an air inlet area, the bottom end openings of vertical channels at two sides serve as a first air outlet 12, and the evaporator chamber 15 is communicated with the first air outlet;

the refrigerating mask 1 is provided with a plurality of air outlets 2 for supplying air to the refrigerating compartment, an air inlet duct 6 is arranged in a shell of the refrigerating duct II 4, a plurality of second air outlets 5 are correspondingly arranged on the shell according to the positions of the air outlets 2 and are communicated with the air inlet duct 6, a fan 7 is arranged in a mounting hole at the upper part of the rear end of the refrigerating duct II 4, a first air inlet and a second air inlet are arranged above the fan 7, a first air door 8 is arranged in the first air inlet and is communicated with an air inlet area opposite to the air return duct 11, and a second air door 9 is arranged in the second air inlet and is communicated with the air inlet duct 6; the first freezing air duct 10 is provided with an opening corresponding to the mounting hole and communicated with the evaporator chamber 15;

the refrigerator air duct assembly is characterized in that a first air inlet, an air return duct 11, a first air outlet 12 and an evaporator chamber 15 form an air return duct, and the on/off of the air return duct is controlled by a first air door 8; the second air inlet, the air inlet duct 6, the plurality of second air outlets 5 and the plurality of air outlets 2 form a refrigerating air path for supplying air to the refrigerating compartment by the evaporator chamber 15, the refrigerating air path is independent from the return air path, and the second air door 9 controls the on/off of the air inlet air path.

When in refrigeration, the first air door 8 is closed, the second air door 9 is opened, the fan 7 is opened, the cold in the evaporator chamber 15 flows to the air inlet duct 6 in the second refrigerating duct 4 shell through the second air door 9 at the second air inlet, and the cold air is sent into the refrigeration compartment through the second air outlets 5 and the plurality of air outlets 2 matched with the refrigerating mask 1;

during defrosting, the second air door 9 is closed, the first air door 8 is opened (specifically, opened within a period of time after defrosting and before the next period of refrigeration begins), and heat generated during defrosting is sent into a return air channel of the first freezing air channel 10 through the first air door 8 at the first air outlet 12 by virtue of the operation of the fan 7, and flows to the lower part of the evaporator cavity 15 through the first air outlets 12 at the bottom ends of the two sides of the return air channel.

In specific implementation, the corresponding structure arrangement also includes:

the back shell of the freezing air duct II 4 is tightly abutted against a partial area of the transverse channel in the return air channel to form incomplete blocking of the transverse channel, so that heat flows to the air inlet area of the return air channel only through the first air inlet.

The outer edge of the open end of the freezing mask is provided with a plurality of fixing buckles 3 which are matched with a plurality of bayonets on the inner container 13 of the box body to form a clamping structure between the freezing mask and the inner container 13 of the box body.

The transverse channel of the return air duct 11 extends above the evaporator 14, and the evaporator 14 is positioned between the vertical channels on two sides.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a refrigerator wind channel subassembly, its characterized in that installs on refrigerator box inner bag, forms the cavity between rear lower part and the box inner bag, as the evaporimeter cavity, the evaporimeter install in the evaporimeter cavity, refrigerator wind channel subassembly's structure sets up to:

the rear end of a freezing mask of the internal cavity is open, a second freezing air duct is arranged in the rear end of the freezing mask, the first freezing air duct is assembled at the open end of the freezing mask, the upper part of the rear end of the first freezing air duct protrudes backwards to form a -shaped inner cavity to serve as a return air duct, a transverse channel above the return air duct serves as an air inlet area, and bottom openings of vertical channels at two sides serve as first air outlets and are communicated with an evaporator cavity; the outer edge of the open end of the freezing mask is provided with a plurality of fixing buckles which are matched with a plurality of bayonets on the inner container of the box body to form a clamping structure between the freezing mask and the inner container of the box body;

the refrigerating face cover is provided with a plurality of air outlets for supplying air to the refrigerating compartment, an air inlet duct is arranged in a shell of the refrigerating air duct II, a plurality of second air outlets are correspondingly arranged on the shell according to the positions of the air outlets and are communicated with the air inlet duct, a fan is arranged in a mounting hole at the upper part of the rear end of the refrigerating air duct II, a first air inlet and a second air inlet are arranged above the fan, a first air door is arranged in the first air inlet and is communicated with an air inlet area opposite to the air return duct, and a second air door is arranged in the second air inlet and is communicated with the air inlet duct; an opening is arranged at the position of the first freezing air duct corresponding to the mounting hole and is communicated with the evaporator chamber; when the refrigerator is used for refrigerating, the first air door is closed, and the second air door is opened; when defrosting the refrigerator, the first air door is opened, and the second air door is closed;

2. The refrigerator tunnel assembly of claim 1, wherein: the transverse channel of the return air duct extends above the evaporator in a suspending mode, and the evaporator is located between the vertical channels on two sides.