CN110895074A

CN110895074A - Refrigerator with rotary fin defrosting heating structure

Info

Publication number: CN110895074A
Application number: CN201911355912.XA
Authority: CN
Inventors: 黄家晟; 杨帆
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-03-20

Abstract

The invention discloses a refrigerator with a rotary fin defrosting and heating structure, and relates to the technical field of refrigerators. The invention comprises a refrigerator body; the refrigerator body comprises a storage compartment; an evaporator chamber is arranged in the storage chamber; a finned evaporator and a defrosting water receiving disc are sequentially arranged in the evaporator chamber from top to bottom; a rotary fin defrosting heating assembly is arranged between the fin evaporator and the defrosting water pan; the rotary fin defrosting heating assembly comprises an electric heating pipe and a metal radiating belt; the metal radiating belt is uniformly wound on the outer wall of the electric heating pipe to form a spiral radiating fin. According to the invention, the spiral radiating fin is arranged on the electric heating pipe, so that the radiating area can be effectively increased, the defrosting efficiency and effect are ensured, and the electric heating pipe has higher market application value.

Description

Refrigerator with rotary fin defrosting heating structure

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator with a rotary fin defrosting heating structure.

Background

For heating defrosting of an air-cooled frostless refrigerator, the influence of defrosting on the performance of the refrigerator is important, wherein the influence includes whether the refrigerator is defrosted completely under a severe high-humidity environment; the energy consumption is increased by temperature drift after defrosting; the surface temperature of the heater is high during defrosting, plastics, sponge, foam and the like in the refrigerator are easy to ignite and burn, and the flammable and explosive refrigerant R600a commonly used in the existing refrigerator is easy to cause deflagration accidents at the high temperature of the defrosting heater. At present, a defrosting heater of an air-cooled frostless refrigerator mainly comprises an aluminum heating pipe, a stainless steel heating pipe and the like, and for an R600a refrigerant, because of the risk of deflagration, the surface temperature of the defrosting heating pipe is strictly controlled. At present, most of defrosting heaters of air-cooled frostless refrigerators are stainless steel heating pipes and are in a light pipe state. The stainless steel heating pipe in a light pipe state is not easy to control the surface temperature of the heating pipe, the overhigh surface temperature has higher requirement on the heat resistance of materials inside a refrigerator around the heating pipe, and if the design consideration is not good, a fire disaster can be caused. Under the condition that does not change inside heater strip, can only reduce heating pipe surface temperature through reducing heating power, it can influence the defrosting thoroughness to reduce heating power, lead to the frost layer on the evaporimeter not to thoroughly change, if the temperature setting after extension defrosting time and improvement defrosting, then can cause power consumption to increase, though power consumption increases and is little to the consumer influence, because relate to the performance technical parameter of product, the designer can lengthen the defrosting interval, but the interval time is longer, the evaporimeter frosts more seriously, the resistance that the air flow passed through the evaporimeter is big more, influence to the performance also increases. And the heating pipe heat radiating area of light pipe state is less, for guaranteeing the quality of defrosting when controlling heating power, can only lengthen and increase the heating pipe, and this will probably cause the evaporimeter cavity space to increase, and the refrigerator actual use area reduces, and the heater cost that defrosts rises, is unfavorable for manufacturing enterprise's design and production. Therefore, it is urgently needed to research a refrigerator having a rotary fin defrosting heating structure in order to solve the above problems.

Disclosure of Invention

The invention provides a refrigerator with a rotary fin defrosting heating structure, and aims to solve the problems in the background technology.

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

the invention relates to a refrigerator with a rotary fin defrosting heating structure, which comprises a refrigerator body; the refrigerator body comprises a storage compartment; an evaporator cavity is arranged in the storage chamber; a fin evaporator and a defrosting water receiving disc are sequentially arranged in the evaporator chamber from top to bottom; a rotary fin defrosting heating assembly is arranged between the fin evaporator and the defrosting water pan; the rotary fin defrosting heating assembly comprises an electric heating pipe and a metal radiating belt; the metal heat dissipation belt is uniformly wound on the outer wall of the electric heating pipe to form a spiral heat dissipation fin.

Furthermore, both ends of the electric heating tube are provided with position locking parts for fixing both ends of the spiral radiating fin.

The invention has the following beneficial effects:

when the rotary fin defrosting heating assembly is started, the electric heating pipe starts to heat, the heat is conducted to the metal heat dissipation belt, and then the heat is transferred to the fin evaporator and the defrosting water pan in a convection mode in the air through the metal heat dissipation belt; meanwhile, the surface temperature of the electric heating pipe can be effectively reduced due to the wide heat dissipation area of the spiral heat dissipation fins, the use safety is improved, the defrosting quality is guaranteed, meanwhile, the power of the fin evaporator can be properly reduced, the length of the electric heating pipe can be properly reduced, and the production cost is 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 refrigerator having a rotary fin defrosting heating structure according to the present invention;

FIG. 2 is a schematic structural view of a fin defrosting heating assembly according to the present invention;

fig. 3 is a top view of the structure of fig. 2.

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

the refrigerator comprises a refrigerator body 1, a storage chamber 2, an evaporator chamber 3, a fin evaporator 4, a defrosting water tray 5, an electric heating pipe 6, a metal heat dissipation belt 7, a locking component 8, a fuse 9 and a wiring harness terminal.

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.

Referring to fig. 1-3, the present invention relates to a refrigerator with a rotary fin defrosting heating structure, which comprises a refrigerator body 1; the refrigerator body 1 comprises a storage compartment 2; the storage chamber 2 is a freezing chamber or a full temperature-changing chamber; an evaporator chamber 3 with an independent structure is arranged in the storage chamber 2;

a finned evaporator 4 and a defrosting water receiving disc 5 are fixedly arranged in the evaporator chamber 3 from top to bottom in sequence; the connection relationship between the fin evaporator 4 and other components in the refrigerator body 1 belongs to the conventional technical means in the field; the cross section of the defrosting water tray 5 is of a V-shaped structure; a rotary fin defrosting heating component is arranged between the fin evaporator 4 and the defrosting water pan 5; the rotary fin defrosting heating assembly is hung under the fin evaporator 4 through a hook, and keeps a certain installation distance with the defrosting water pan 5;

the rotary fin defrosting heating assembly comprises an electric heating pipe 6 and a metal radiating belt 7, wherein the electric heating pipe 6 is of a U-shaped structure; the electric heating tube 6 adopts stainless steel or copper tube and other metals as a shell, high-temperature resistance wires are uniformly distributed in the tube, and magnesia powder with good heat conduction and insulation properties is filled in a gap part in the tube; both ends of the electric heating pipe 6 are connected with a fuse and a wiring harness terminal 9, or one end of the electric heating pipe 6 is connected with the fuse and the other end is connected with the wiring harness terminal; the fuse and the wiring harness terminal 9 are bound on one side of the fin evaporator 4 through a binding belt; the connection relationship between the fuse and the wire harness terminal 9 and other components in the refrigerator body 1 belongs to the conventional technical means in the field; the metal heat dissipation belt 7 is made of stainless steel, a galvanized plate or an aluminum plate; the metal heat dissipation belt 7 is uniformly wound on the outer wall of the electric heating pipe 6 to form a spiral heat dissipation fin, and compared with the heat dissipation structure in the prior art, the heat dissipation area of the heat dissipation structure is increased by 2-3 times; the metal heat dissipation belt 7 is connected with the electric heating pipe 6 in a spot welding mode; the distance between the spiral radiating fins is set to be 3-5 mm; the two ends of the electric heating pipe 6 are respectively provided with a position locking part 8 for fixing the two ends of the spiral radiating fin; the position locking part 8 is a locking ring; during installation, the end part of the spiral radiating fin extends into the space between the locking ring and the electric heating tube 6, and then the locking ring is flattened, so that the locking ring is in interference fit with the electric heating tube 6.

Specifically, in order to ensure that the electric heating tube 6 is as close as possible to the defrosting pan 5, a section of the electric heating tube 6 located in the middle of the defrosting pan 5 is bent downward by a certain angle, so that the electric heating tube 6 fits the shape of the defrosting pan 5.

When the wing-rotating defrosting heating assembly starts, the electric heating pipe 6 starts to heat, the heat is conducted to the metal heat dissipation belt 7, then the heat is transmitted to the fin evaporator 4 and the defrosting water pan 5 in the air in a convection mode through the metal heat dissipation belt 7, because the heat dissipation area is increased and the shape is reason, the heating speed of the fin evaporator 4 is accelerated, the heat can quickly enable the frost on the fin evaporator 4 and the defrosting water pan 5 to be melted, the defrosting time is shortened, and the defrosting quality is improved. Meanwhile, the surface temperature of the electric heating pipe 6 can be effectively reduced due to the wide heat dissipation area of the spiral heat dissipation fins, the use safety is improved, the defrosting quality is guaranteed, meanwhile, the power of the fin evaporator 4 can be properly reduced, the length of the electric heating pipe 6 can be properly reduced, and the production cost is reduced.

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 with a rotary fin defrosting heating structure comprises a refrigerator body (1); the refrigerator body (1) comprises a storage compartment (2); an evaporator chamber (3) is arranged in the storage compartment (2); the method is characterized in that:

a fin evaporator (4) and a defrosting water receiving tray (5) are sequentially arranged in the evaporator chamber (3) from top to bottom; a rotary fin defrosting heating assembly is arranged between the fin evaporator (4) and the defrosting water pan (5);

wherein the rotary fin defrosting heating assembly comprises an electric heating pipe (6) and a metal radiating strip (7); the metal heat dissipation belt (7) is uniformly wound on the outer wall of the electric heating pipe (6) to form a spiral heat dissipation fin.

2. The refrigerator having a structure for defrosting by rotating fins according to claim 1, wherein both ends of the electric heating tube (6) are provided with a position locking member (8) for fixing both ends of the spiral radiating fin.