CN111854275A

CN111854275A - Refrigerator with a door

Info

Publication number: CN111854275A
Application number: CN201910356145.8A
Authority: CN
Inventors: 张海鹏; 潘毅广; 丁龙辉; 孙敬龙
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-10-30

Abstract

The invention discloses a refrigerator, which comprises a storage chamber and an evaporator chamber positioned on the lower side in the storage chamber, wherein the evaporator chamber comprises an evaporator and a heater, the bottom of the evaporator chamber is provided with a water receiving tank, the evaporator comprises a coil pipe and a plurality of rows of fins sleeved on the coil pipe, the bottom edge of the row of fins at the bottommost is bent to form a bending part, the heater is arranged below the bending part, the bending part is provided with a ventilating part, and defrosting water generated by the evaporator directly flows into the water receiving tank along at least one end of the bending part without passing through the heater. In the refrigerator, the bending parts of the fins form baffle structures, and defrosting water is guided into the water receiving tank from at least one side of the bending parts, so that the defrosting water is prevented from dropping on the heating wires to generate abnormal sound, ice blocks in a defrosting period can be prevented from dropping, and the ice blocks are prevented from dropping and vaporizing at the highest speed to generate noise; the integral structure is simple, other shielding parts do not need to be added between the evaporator and the heater, and the evaporator is not limited by the installation space of the evaporator; the heater is positioned at the bottom of the evaporator, and defrosting efficiency is high.

Description

Refrigerator with a door

Technical Field

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

Background

Defrosting principle of the refrigerator: the fin evaporator is fixed on the freezing inner container, the refrigerator refrigeration makes the fin evaporator go up frosting, makes the frost on the fin evaporator melt for defrosting water through the heater strip heating during defrosting, and defrosting water drips to the defrosting water receiving tank of lower part in, flows into the outside evaporating dish of box through the drain pipe, through the hot pipeline of evaporating dish in accelerating the evaporation of defrosting water again. In the defrosting process, the temperature of the heating wire can reach more than 300 ℃, and defrosting water or ice blocks drop on the heating wire and are quickly vaporized to generate the noise of 'split type'.

Two methods for eliminating abnormal sound in the defrosting period are currently used, one is to shield the heating wire, and the other is to adopt a low-temperature (not more than 90 ℃) defrosting method. The first method comprises the following steps: the heating wire is provided with the shielding plate, and in order to ensure defrosting efficiency, the shielding plate is provided with the strip-shaped hole, so that heat can be conveniently circulated, and the probability that defrosting water drops on the heating wire is reduced; and the second method comprises the following steps: the heating wires are aluminum tube heating wires which are evenly distributed between the evaporation tubes and the fins, and the temperature of the heating wires does not exceed 90 ℃ in the defrosting period; the two methods can reduce or avoid abnormal noise in the defrosting period, but the first method has difficult installation and higher requirements on the position and the installation angle of the shielding plate; in the second method, because the heating wire is far away from the defrosting water receiving tank, in order to ensure that defrosting water is smoothly discharged, the heating wire needs to be added on the defrosting water receiving tank, and defrosting needs to be carried out for a long time, so that the defrosting efficiency of the whole machine is very low, and the freezing performance of the refrigerator is not facilitated.

Disclosure of Invention

Based on the technical problem, the invention aims to provide the refrigerator which can avoid the noise generated by the rapid vaporization of the defrosting water, has high defrosting efficiency and simple structure.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

The utility model provides a refrigerator, includes the storeroom and is located the inside evaporator room of downside of storeroom, the evaporator room includes the evaporimeter and is located the heater of evaporimeter downside, the bottom of evaporimeter room is equipped with the water receiving tank, and the bottom of water receiving tank is equipped with the wash port, the evaporimeter includes that coil pipe and cover are located multirow fin on the coil pipe, the base that is located a row of fin of bottommost is bent and is formed the portion of bending, the heater sets up the below of the portion of bending, the portion of bending sets up ventilative portion, the defrosting water that the evaporimeter produced is followed at least one end of the portion of bending does not pass through the heater direct flow down to in the water receiving tank.

In one embodiment, the bottom edges of the fins are arranged obliquely.

In one embodiment, the bottom edge of each fin is inclined at an angle ranging from 10 degrees to 45 degrees.

In one embodiment, the air permeable portion comprises a plurality of openings arranged on the bending portion.

In one embodiment, the diameter of the open pore is less than or equal to 3.5 mm.

In one embodiment, a gap is formed between the bent part of the fin and the adjacent fin, and the air permeable part comprises the gap.

In one embodiment, the width of the gap is less than or equal to 3.5 mm.

In one embodiment, the bottom edge of each row of fins is bent along the same direction in an L shape to form the bent part.

In one embodiment, the heater comprises a heating wire, the bottom of the heating wire is bent along a vertical plane S shape and is perpendicular to the fins, and the heating wire is arranged below the middle position of each bottommost fin.

Compared with the prior art, the invention has the advantages and positive effects that:

according to the refrigerator, the bottom of the evaporator fin is bent, the bent parts of the fins form a baffle structure, defrosting water is guided into the water receiving tank from at least one side of the bent parts, the defrosting water is prevented from dropping on the heating wires, and abnormal noise caused by dropping and vaporization of ice cubes during defrosting is avoided; the integral structure is simple, other shielding parts do not need to be added between the evaporator and the heater, and the evaporator is not limited by the installation space of the evaporator; the heater is located the evaporimeter bottom, and the evaporimeter sets up ventilative portion, and it is efficient to change the frost.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a refrigerator according to the present invention;

FIG. 2 is a schematic view of a refrigeration system of the refrigerator of the present invention;

FIG. 3 is a schematic view showing the structure of an evaporator in the refrigerator according to the present invention;

FIG. 4 is a schematic view of the bottom structure of the evaporator in the refrigerator according to the present invention;

FIG. 5 is a side view of the evaporator bottom fin in the refrigerator of the present invention;

FIG. 6 is a front view of the evaporator bottom fin of the refrigerator of the present invention;

description of reference numerals:

a refrigerator 1;

a storage chamber 100; a freezing chamber 100A; a refrigerating compartment 100B;

a door body 200; a freezing chamber door 200A; a refrigerating chamber door body 200B;

a refrigeration system 300; a compressor 310; a condenser 320; a solenoid valve 330; a throttle device 340; a first throttling device 341; a second throttling device 342; an evaporator 350; a refrigerating compartment evaporator 351; a freezing chamber evaporator 352; a reservoir 360;

A heater 400;

a coil 353; the fins 354; a bending portion 3541; a gap 355; and an opening 356.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 6, there is shown an embodiment of a refrigerator according to the present invention.

FIG. 1 is a perspective view of one embodiment of a refrigerator according to the present invention; referring to fig. 1, the refrigerator 1 of the present embodiment has an approximately rectangular parallelepiped shape. The external appearance of the refrigerator 1 is defined by a storage chamber 100 defining a storage space and a plurality of door bodies 200 provided in the storage chamber 100. Referring to fig. 1, the door 200 includes a door outer shell located outside the storage chamber 100, a door inner located inside the storage chamber 100, an upper end cover, a lower end cover, and a heat insulating layer located between the door outer shell, the door inner, the upper end cover, and the lower end cover; typically, the thermal insulation layer is filled with a foam material.

The storage chamber 100 has an open cabinet, and the storage chamber 100 is vertically partitioned into a lower freezer compartment 100A and an upper refrigerator compartment 100B. Each of the partitioned spaces may have an independent storage space.

In detail, the freezing compartment 100A is defined at a lower side of the storage compartment 100 and may be selectively covered by a drawer type freezing compartment door 200A. The space defined above the freezing compartment 100A is partitioned into left and right sides to define the refrigerating compartment 100B, respectively.

The refrigerating compartment 100B may be selectively opened or closed by a refrigerating compartment door body 200B pivotably mounted on the refrigerating compartment 100B.

Fig. 2 shows a refrigeration system 300 of the refrigerator according to the present invention, the refrigeration system 300 includes a compressor 310, a condenser 320, a throttling device 340, and an evaporator 350, and an accumulator 360 is disposed between an outlet of a freezing chamber evaporator 352 and a suction port of the compressor 310. In this embodiment, the evaporator 350 includes a refrigerating chamber evaporator 351 and a freezing chamber evaporator 352, a high-temperature and high-pressure gaseous refrigerant discharged from the compressor 310 is cooled by the condenser 320 and then becomes a normal-temperature liquid refrigerant, and is divided into two paths by the electromagnetic valve 330, wherein one path of the refrigerant enters the refrigerating chamber evaporator 351 after being throttled and depressurized by the first throttling device 341 (first capillary tube), the other path of the refrigerant enters the freezing chamber evaporator 352 after being throttled by the second throttling device 342 (second capillary tube), a refrigerant pipeline flowing out of the refrigerating chamber evaporator 351 is connected to a pipeline between the second throttling device 342 and the freezing chamber evaporator 352, the liquid refrigerant flowing out of the freezing chamber evaporator 352 returns to the reservoir 360, and the gaseous refrigerant returns to the return port of the compressor 310. When the freezing chamber 100B requires refrigeration, the compressor 310 is started, the electromagnetic valve 330 is controlled to introduce the refrigerant into the pipeline where the second throttling device 304 is located, the refrigerant passes through the freezing chamber evaporator 3052 and then flows into the air return port of the compressor 310 through the liquid storage device 360, and the refrigeration of the freezing chamber 100B is realized through the above cycle process. When the refrigerating chamber 100A requires refrigeration, the electromagnetic valve 330 is controlled to introduce the refrigerant into the pipeline where the first throttling device 3041 is located, and the refrigerant passes through the refrigerating chamber evaporator 351 and the freezing chamber evaporator 352 in sequence and then flows into the air return port of the compressor 310 through the liquid storage device 360, so that refrigeration of the refrigerating chamber is realized through the above cycle process.

An evaporator chamber is provided at the lower side of the interior of the storage chamber 100, the evaporator chamber includes an evaporator 350 and a heater 400 at the lower side of the evaporator, as shown in fig. 3, the heater 400 is provided below the evaporator 350, a water receiving tank (not shown) for collecting defrosting water is provided below the heater 400, and a drain hole is provided at the bottom of the water receiving tank. The evaporator 350 is a finned evaporator 350, and includes a coil 353 and a plurality of rows of fins 354 sleeved on the coil 353. The bottom edges of the fins 354 in the row on the bottommost coil are all bent towards the same direction to form a bent part 3541. The heater 400 is disposed below the bent portion 3541. The heater 400 defrosts the evaporator 350 above, and the bent portion 3541 is provided with a ventilation portion for allowing hot air heated by the heater to enter the evaporator for defrosting. The bending part 3541 has a blocking effect on falling defrosting water, and the defrosting water directly flows down into the water receiving tank along at least one end of the bending part 3541 without passing through the heater 400.

In the refrigerator, the bottom of the fin 354 of the evaporator 350 is bent, the bent part 3541 of the fin 354 forms a baffle structure, defrosting water is guided into the water receiving tank from at least one side of the bent part 3541, the phenomenon that the defrosting water drops on the heating wire to generate abnormal noise of 'tearing' is avoided, and meanwhile, the bent part 3541 of the fin 354 can also prevent ice cubes from falling in the defrosting period and avoid abnormal noise generated by falling and vaporizing of the ice cubes; the whole structure is simple, other shielding parts do not need to be added between the evaporator 350 and the heater 400, and the installation space of the evaporator 350 is not limited; the heater 400 is positioned at the bottom of the evaporator 350, and the evaporator 350 is provided with a ventilation part, so that the defrosting efficiency is high.

In order to make the defrosting water flow down smoothly along the bending portion 3541, as shown in fig. 4 and 5, in the present embodiment, the bottom sides of the fins 354 are arranged obliquely, that is, one end of the bottom side of each row of fins 354 is higher and the other end is lower, and the defrosting water flows down from the lower end along the surface of the oblique bending portion 3541. Preferably, the rear end of the bottom side of each row of fins 354 is lower, the front end thereof is higher, and the water receiving groove is disposed below the evaporator 350 at a position more to the rear side for receiving the defrosted water and the ice cubes flowing down from the evaporator 350.

The bottom edge inclination angle range of the fins 354 is preferably 10-45 degrees. Not only can ensure that the defrosting water flows down smoothly, but also can ensure that the evaporator 350 has not too large volume and occupies larger space. In other embodiments, the bottom side of the fin 354 may not be inclined, and in this case, the defrosting water may flow down from both ends of the bent portion 3541.

In this embodiment, the bottom edge of each row of fins 354 is bent along the same direction L-shaped to form a bent portion 3541, that is, a right angle is formed between the bent portion 3541 and the vertical fins 354, so that defrosting water can flow down uniformly along the plane of the bent portion 3541, and meanwhile, the structure is simple, and the processing and manufacturing are convenient. In another embodiment, the bending angle of the bending portion 3541 is not limited to a right angle, as long as the bending portion 3541 can ensure that the falling defrosting water is blocked by the bending portion 3541.

Specifically, the heater 400 includes a steel pipe type heating wire, a lower portion of which is bent in an S-shape along a vertical plane, and which is perpendicular to the fins 354 and disposed below a middle position of each of the fins 354 at the bottommost portion, so as to ensure uniform heating of the evaporator and improve heating efficiency. The heating wire is fixed to a side plate of the evaporator 350 by a fixing bracket. In the present embodiment, the heating wire has a single-row structure, and in other embodiments, the evaporator of the present invention is also applicable to a heating wire having a double-row structure.

In this embodiment, as shown in fig. 4 and 6, the air permeable portion includes a plurality of openings 356 or grooves formed in the bent portion 3541, and the heat of the heater 400 can be smoothly transferred to the evaporator 350 through the openings 356 or grooves. The aperture or the groove width of the opening is smaller than the diameter of the water drop, the aperture or the groove width of the opening 356 is less than or equal to 3.5mm, preferably 3.5mm, so as to ensure that the defrosting water drop can not directly drop from the opening or the groove. The opening 356 or the groove allows the heat of the heater 400 to be smoothly transferred to the evaporator 350, thereby improving the defrosting efficiency.

In another embodiment, as shown in fig. 6, a gap 355 may be provided between the bent portion 3541 of the fin 354 and the adjacent fin 354, and the air permeable portion includes the gap 355. The heat exchange of the evaporator and the heat transfer in the defrosting period are ensured. The width of the gap is smaller than the diameter of the water droplet to ensure that the defrosted water droplet does not directly fall from the gap and drip onto the heater 400 below. In the present embodiment, the width of the gap 355 is 3.5mm or less, preferably 3.5 mm. Leave gapped setting between bending portion 3541 and the fin 354, simple structure is convenient for make, with low costs. Several openings and gaps can be arranged at the same time to further increase the heat exchange of the evaporator.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The utility model provides a refrigerator, includes the storeroom and is located the inside evaporator room of downside of storeroom, the evaporator room includes the evaporimeter and is located the heater of evaporimeter downside, the bottom of evaporimeter room is equipped with the water receiving tank, and the bottom of water receiving tank is equipped with the wash port, the evaporimeter includes that coil pipe and cover are located multirow fin on the coil pipe, its characterized in that, the base that is located a row of fin of bottommost bends and forms the portion of bending, the heater sets up the below of the portion of bending, the portion of bending sets up ventilative portion, the defrosting water that the evaporimeter produced is followed at least one end of the portion of bending does not pass through the heater directly flows down to in the water receiving tank.

2. The refrigerator according to claim 1, wherein a bottom side of the fin is disposed obliquely.

3. The refrigerator according to claim 2, wherein the fins are inclined at a bottom side thereof in an angle ranging from 10 to 45 °.

4. The refrigerator according to claim 1, wherein the air-permeable portion includes a plurality of openings provided on the bent portion.

5. The refrigerator as claimed in claim 4, wherein the diameter of the open hole is less than or equal to 3.5 mm.

6. The refrigerator according to any one of claims 1 to 5, wherein a gap is provided between the bent portion of the fin and the adjacent fin, and the air-permeable portion includes the gap.

7. The refrigerator of claim 6, wherein the gap has a width of 3.5mm or less.

8. The refrigerator according to any one of claims 1 to 5, wherein the bottom edge of each row of fins is L-shaped bent in the same direction to form the bent portion.

9. The refrigerator according to any one of claims 1 to 5, wherein the heater includes a heater wire, a bottom of which is S-shaped bent along a vertical plane and perpendicular to the fins, disposed below a middle position of each of the bottommost fins.