CN112984918A

CN112984918A - Refrigerator with refrigeration module beneficial to defrosting and draining structure

Info

Publication number: CN112984918A
Application number: CN202110407251.1A
Authority: CN
Inventors: 刘全义; 张魁仓; 李清松
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-06-18

Abstract

The invention discloses a refrigerator with a refrigeration module which is beneficial to defrosting and drainage, and relates to the technical field of refrigeration. The refrigerator of the invention comprises a freezing chamber, a refrigerating chamber and a refrigerating module shell; a refrigerating module shell is fixed on the top of the freezing chamber; an evaporator is fixed inside the refrigerating module shell; A heater and an aluminum plate are fixed between the evaporator and the insulating foam; the refrigerator is provided with a return air passage for the refrigerating chamber and a return air passage for the freezing chamber; the return air passage and the return air passage are connected; the fan passes through the upward air outlet area The cold air channel supplies air to the refrigerating chamber, and then flows into the evaporator through the return air channel of the freezing chamber, forming a complete air circulation. The invention effectively reduces the adverse effect of components on drainage by designing the aluminum plate flanging structure and the heater layout, improving the defrosting reliability of the refrigerator and increasing the effective volume of the refrigerator without depending on the inclination angle of the fin evaporator.

Description

Refrigerator with refrigeration module beneficial to defrosting and draining structure

Technical Field

The invention belongs to the technical field of refrigeration, and particularly relates to a refrigerator with a refrigeration module which is beneficial to defrosting and draining.

Background

The conventional air-cooled refrigerator fin evaporator is usually placed on the back of a storage compartment, and the temperature of the fin evaporator is lower than the temperature of air in the compartment, so that the temperature difference between the inside and the outside of the refrigerator is increased, and the heat load of the refrigerator is increased. Due to the structural limitation, the rear space of the storage chamber is pulled up and down to be used for placing the fin evaporator, the fan and the air duct, so that the available volume of the refrigerator is wasted, and the higher the chamber is, the more obvious the volume rate is reduced. Generally, a fin evaporator adopts a steel pipe heater for defrosting, heat is mainly concentrated at the bottom of the evaporator, heat and energy waste is easily caused, the temperature of indoor air rises quickly in the middle of the defrosting process, and temperature fluctuation is large. In order to overcome the defects of the air-cooled refrigerator, the effects of increasing the volume rate of the refrigerator, improving the fresh-keeping effect of the refrigerator, reducing the energy consumption of the refrigerator and the like are achieved, and the fin evaporator is placed at the top of a compartment and at the bottom of the compartment in the conventional product technical scheme.

The fin evaporator of the air-cooled refrigerator is arranged in a top mode of a compartment, and the fin evaporator has the remarkable structural characteristics that: firstly, the fin evaporator and the horizontal direction are provided with an inclination angle, defrosting water is automatically discharged under the action of gravity, and the inclination angle is not easy to be enlarged in order to ensure the use function and the effective volume of the refrigerator, so that if the defrosting water is not smoothly discharged, the refrigerating effect is influenced, and even refrigeration is not carried out; secondly, the compartment air return opening is usually arranged at the opening position of the refrigerator, and if the refrigerator is too long in door opening time, high in environment humidity or cold leakage occurs at the sealing position between a door body and a refrigerator body, a large amount of wet air is gathered at the position of the air return opening, so that frost blockage or ice blockage of the air return opening is caused, and the normal use of the refrigerator is influenced; and thirdly, the aluminum pipe heater for the interval defrosting of the evaporator is fixed on the surface of the evaporator, and because the heater is in hard contact with the fins, the loss of parts of the heater is large and the operation difficulty is large in the production process.

Disclosure of Invention

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

the invention relates to a refrigerator with a refrigeration module beneficial to defrosting and draining structures, which comprises a freezing chamber, a refrigerating chamber air return channel, a refrigerating chamber, a freezing chamber air return channel, a refrigeration module shell and a cold air channel A, wherein the freezing chamber air return channel is arranged in the refrigerating chamber; a refrigeration module shell is fixedly arranged at the top of the freezing chamber; an evaporator is fixedly arranged in the refrigeration module shell; sealing heat-preservation foam is arranged between the top of the evaporator and a box body foaming layer of the refrigerator; heat insulation foam is arranged at the bottom of the evaporator and the inner wall of the shell of the refrigeration module; a heater and an aluminum plate are fixedly arranged between the bottom of the evaporator and the top of the heat insulation foam; one end of the evaporator is respectively provided with a refrigerating chamber air return channel and a freezing chamber air return channel; the refrigerating chamber air return channels are arranged on two sides of the refrigerating chamber; the air return channel is communicated with the air return channel; a fan is fixedly arranged at the rear end of the refrigerator; the evaporator is positioned on a fan at the rear end of the refrigerator; the fan supplies air to the refrigerating chamber through the cold air channel A in an upward air outlet area, and then flows into the evaporator through the cold chamber return air channel to form complete air path circulation.

Further, the inclination angle between the evaporator and the horizontal plane is 0-20 degrees.

Further, all set up the turn-ups around the aluminum plate.

Further, a heater positioned right below the evaporator is fixedly arranged above the aluminum plate; the pipeline direction of the heater is consistent with the depth direction of the refrigerator body.

Further, the heating pipe of the heater extends out of the edge of the aluminum plate, and the extending length L of the heating pipe is not less than 5 cm.

Further, an aluminum plate notch is formed in the aluminum plate; the heating pipe of the heater is embedded into the aluminum plate, and the embedding depth of the heating pipe is not less than one third of the pipe diameter of the heater; the rest part of the aluminum plate is arranged on the upper part of the heater and used for collecting the defrosting water on the evaporator and finally discharging the defrosting water out of the box body from the notch of the aluminum plate; the pipeline direction of the heater is consistent with the width direction of the box body and extends to the notch of the aluminum plate.

Further, the heater and the aluminum plate adopt an integrated structure.

Furthermore, an air inlet of the freezing chamber air return channel adopts a hidden air port structure; the direction of the air inlet of the freezing chamber air return channel is inclined downwards, and the air return channel is provided with a smooth air guide structure.

Further, an electric air door is fixedly arranged in the cold air channel A; a cold air channel B is arranged below the fan; the fan supplies air to the freezing chamber through the cold air channel B in a downward air outlet area, and then flows into the evaporator through the cold chamber return air channel to form complete air path circulation.

The invention has the following beneficial effects:

1. according to the overhead refrigeration module, the adverse influence of components on drainage is effectively reduced by the flanging structure design of the aluminum plate and the layout design of the heater, the defrosting reliability of the refrigerator is improved and the effective volume of the refrigerator is increased without depending on the inclination angle of the fin evaporator.

2. According to the invention, the heater pipeline is embedded in the notch of the aluminum plate, so that the risk of scratching the heating pipe by the fins is avoided, the heating efficiency of the heater is ensured, and the installation difficulty of the heater is solved.

3. According to the invention, through the design of the hidden air port, the risk of frost blockage or ice blockage of the air port caused by the accumulation of a large amount of wet air under severe working conditions is avoided, and the reliability of the refrigerator is improved.

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 refrigerator having a refrigeration module with a structure facilitating defrosting and draining according to the present invention in a width direction;

FIG. 2 is a schematic view of the overall construction of a refrigerator having a refrigeration module with a structure for facilitating defrosting and draining according to the present invention in the depth direction;

FIG. 3 is a schematic view of a partial structure of an aluminum plate and a heater;

FIG. 4 is a schematic view of the aluminum plate and the notch of the aluminum plate, and the heater;

FIG. 5 is a partial structural view of the aluminum plate and the flange;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

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

1-freezing chamber, 2-refrigerating chamber return air channel, 3-refrigerating chamber, 4-freezing chamber return air channel, 5-refrigeration module shell, 6-heat insulation foam, 7-aluminum plate, 8-heater, 9-cold air channel A, 10-electric air door, 11-heat insulation foam, 12-evaporator, 13-fan, 14-cold air channel B, 71-aluminum plate notch and 72-flanging.

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. 1-6, the present invention relates to a refrigerator with a refrigeration module for defrosting and draining, which comprises a freezing chamber 1, a refrigerating chamber return air channel 2, a refrigerating chamber 3, a freezing chamber return air channel 4, a refrigeration module casing 5 and a cold air channel a 9; the refrigeration module shell 5 is arranged at the top of the freezing chamber 1, an evaporator 12 is arranged in the refrigeration module shell 5, one end of the evaporator 12 is respectively provided with a refrigerating chamber return air channel 2 and a freezing chamber return air channel 4, and the refrigerating chamber return air channels 2 are arranged at two sides of the refrigerating chamber 3; when the door of the freezing chamber 1 is frequently opened or the sealing part of the door box leaks cold, a large amount of hot air enters the compartment, in order to avoid excessive frosting or icing of the air inlet of the refrigerating chamber air return channel 2, the air inlet of the freezing chamber air return channel 4 is set as a hidden air inlet, the air inlet is lower than the air inlet along the direction inside the refrigerating chamber along the direction outside the refrigerating chamber, and the freezing chamber air return channel 4 is provided with a smooth air guide structure; the refrigerating compartment return air passage 2 and the freezing compartment return air passage 4 communicate with each other in the evaporator 12.

A fan 13 is arranged on an evaporator 12 positioned at the rear end of the refrigerator, the fan 13 supplies air to the refrigerating chamber 3 through a cold air channel 9 in an upward air outlet area, and then flows into the evaporator 12 through a refrigerating chamber return air channel 2; in the process of refrigeration cycle, the refrigerant is absorbed and evaporated in the pipeline of the evaporator 12, so that the surface temperature of the evaporator 12 is reduced, the fan 13 works, cold air cooled by the evaporator 12 is sent into the refrigerating chamber 3 through the cold air channel 9, food is stored in the refrigerating chamber, the cold air is heated, the temperature is increased, and then the cold air flows into the evaporator 12 through the refrigerating chamber return air channel 2, so that complete air path circulation is formed. An electric air door 10 is arranged in the cold air channel 9, when the refrigerating chamber 3 needs to be refrigerated, the electric air door 10 is opened, otherwise, the electric air door 10 is closed, and air circulation of the refrigerating chamber 3 is prevented. The fan 13 blows air to the freezing chamber 1 through the cold air channel 14 in the downward air-out area, and then flows into the evaporator 12 through the freezing chamber return air channel 4. In the process of refrigeration cycle, the refrigerant is absorbed and evaporated in the pipeline of the evaporator 12, so that the surface temperature of the evaporator 12 is reduced, the fan 13 works, cold air cooled by the evaporator 12 is sent into the freezing chamber 1 through the cold air channel 14, food is stored in the cooling box, the cold air is heated, the temperature is increased, and then the cold air flows into the evaporator 12 through the cold air return channel 4, so that complete air path circulation is formed.

Referring to fig. 2, a sealing thermal insulation foam 11 is arranged between the upper part of the evaporator 12 and a foaming layer of the box body, and fills a gap between the evaporator 12 and the foaming layer of the box body, so as to prevent air from flowing through the gap and reducing heat exchange between the air and the evaporator 12, and the upper part of the evaporator 12 and the foaming layer of the box body can be foamed integrally, so that the sealing thermal insulation foam 11 can be eliminated, and the thermal insulation performance of the box body can be improved. The heat insulation foam 6 is arranged between the lower part of the evaporator 12 and the inner wall of the shell 6, so that heat transfer to the interior of the box in the defrosting process is reduced, heat and energy waste is caused, and the temperature rise of the room after defrosting is reduced. Set up heater 8 and aluminum plate 7 between evaporimeter 12 bottom and the thermal-insulated foam 6, see fig. 5, aluminum plate 7 sets up turn-ups structure 72 all around, prevents to change the frost water and spills over, and position heater 8 sets up on aluminum plate 7 upper portion under evaporimeter 12, for reducing the aluminum pipe and hindering the mobility of change frost water, heater 8 pipeline direction keeps unanimous with the box degree of depth direction, and heater 8 stretches out aluminum plate 7 length L and is not less than 5cm, is favorable to changing the smooth discharge of frost water.

Referring to fig. 4, the pipe of the heater 8 is embedded in the surface of the aluminum plate 7, the embedding depth is not less than one third of the pipe diameter of the heater 8, the heater 8 can be fixed on the surface of the aluminum plate 7 in the assembly manner of the refrigeration module, and then the evaporator 12 is installed, so that the assembly efficiency is improved, and the assembly damage rate of the heater 8 is reduced. In order to ensure the water discharging smoothly, the rest part of the aluminum plate 7 is arranged on the upper part of the heater 8, the defrosting water from the evaporator 12 is collected and finally discharged out of the box body from the notch 71 of the aluminum plate, the pipeline direction of the heater 8 is consistent with the width direction of the box body and extends to the notch 71 of the aluminum plate all the time, and the defrosting water is prevented from being frozen again in the flowing process.

The heater 8 may be an integral structure, or a combination of several heaters, depending on the assembling manner of the heaters.

In the defrosting process of the refrigerator, the compressor stops working, the refrigerant cycle stops, the fan 13 is turned off, the cold air cycle stops, the heater 8 starts working, the evaporator 12 and the surrounding area are heated, the temperature of the evaporator is increased to be higher than 0 ℃, frost or ice starts to melt into water, and the defrosting water is collected through the aluminum plate 7 and is discharged to the outside of the refrigerator body. In order to ensure the defrosting water to be smoothly discharged, the inclination angle between the evaporator 12 and the horizontal plane is 0-20 degrees.

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

1. A refrigerator having a refrigeration module that is conducive to defrosting and drainage structures, the refrigerator comprising a freezing chamber (1), a refrigerating chamber return air passage (2), a refrigerating chamber (3), and a freezing chamber return air passage (4) , refrigeration module housing (5) and cold air passage A (9); it is characterized in that:

A refrigeration module housing (5) is fixedly installed on the top of the freezer compartment (1); an evaporator (12) is fixedly installed inside the refrigeration module housing (5); the top of the evaporator (12) is connected to the box of the refrigerator A sealing thermal insulation foam (11) is arranged between the body foam layers;

The bottom of the evaporator (12) and the inner wall of the cooling module housing (5) are provided with insulating foam (6); a heater (6) is fixedly installed between the bottom of the evaporator (12) and the top of the insulating foam (6). 8) and aluminum plate (7);

One end of the evaporator (12) is respectively provided with a refrigerating chamber return air passage (2) and a freezing chamber return air passage (4); the refrigerating chamber return air passage (2) is arranged on both sides of the refrigerating chamber (3); The return air passage (2) is communicated with the return air passage (4); the other end of the evaporator (12) is provided with a fan (13); the fan (13) passes through the cold air passage in the upward air outlet area A (9) supplies air to the refrigerating chamber (3), and then flows into the evaporator (12) through the refrigerating chamber return air passage (2) to form a complete air circulation; the fan (13) discharges the air downwards The area sends air to the freezing chamber (1) through the cold air passage B (14), and then flows into the evaporator (12) through the freezing chamber return air passage (4), forming a complete air circuit circulation.

2 . The refrigerator according to claim 1 , characterized in that the inclination angle between the evaporator ( 12 ) and the horizontal plane is 0°˜20°. 3 .

3 . The refrigerator with a refrigeration module that is beneficial to defrosting and water drainage according to claim 1 , wherein the aluminum plate ( 7 ) is provided with flanges ( 72 ) all around it. 4 .

4. A refrigerator with a refrigeration module that is conducive to defrosting and water drainage according to claim 1, characterized in that the heater (8) located directly below the evaporator (12) is fixedly installed on the aluminum plate (7) ); the pipeline direction of the heater (8) is consistent with the depth direction of the box body of the refrigerator.

5. A refrigerator with a refrigeration module that is beneficial to defrosting and water drainage according to claim 4, characterized in that the heating pipe of the heater (8) protrudes from the edge of the aluminum plate (7), and it protrudes out of the edge of the aluminum plate (7). The length L is not less than 5cm.

6 . The refrigerator with a refrigeration module that is beneficial to defrosting and drainage according to claim 5 , wherein the aluminum plate ( 7 ) is provided with an aluminum plate notch ( 71 ); the heater ( 8 ) ) of the heating tube is embedded inside the aluminum plate (7), and its embedded depth is not less than one third of the diameter of the heater (8); the rest of the aluminum plate (7) is arranged on the upper part of the heater (8) and used for collecting The defrosted water on the evaporator (12) is finally discharged from the aluminum plate slot (71) to the outside of the box body; the pipeline direction of the heater (8) is consistent with the width direction of the box body, and extends all the way to the aluminum plate slot mouth (71).

7 . The refrigerator with a refrigeration module that is beneficial to defrosting and drainage according to claim 6 , wherein the heater ( 8 ) and the aluminum plate ( 7 ) adopt an integrated structure. 8 .

8 . The refrigerator with a refrigeration module that is beneficial to defrosting and water drainage according to claim 1 , wherein the air inlet of the return air passage (4) of the freezing chamber adopts a hidden air outlet structure; The direction of the air inlet of the chamber return air passage (4) is inclined downward, and the air return passage (4) is provided with a smooth air guiding structure.

9 . The refrigerator according to claim 1 , characterized in that an electric damper ( 10 ) is fixedly installed inside the cold air passage A ( 9 ). 10 .

10 . The refrigerator with a refrigeration module that is beneficial for defrosting and water drainage according to claim 1 , wherein a cold air passage B ( 14 ) is provided below the fan ( 13 ). 11 .