WO2021139148A1

WO2021139148A1 - Commercial upright freezer

Info

Publication number: WO2021139148A1
Application number: PCT/CN2020/106717
Authority: WO
Inventors: 尚鑫; 徐磊; 吴福民; 杨倩倩; 侯代民; 张娟; 陈瑞博; 石红卫
Original assignee: 青岛海尔特种电冰柜有限公司; 海尔智家股份有限公司
Priority date: 2020-01-09
Filing date: 2020-08-04
Publication date: 2021-07-15
Also published as: CN113091364A

Abstract

Disclosed is a commercial upright freezer. The commercial upright freezer comprises a freezer body (1), a refrigeration circuit, a centrifugal fan (3) and an air duct cover plate (4), wherein the air duct cover plate (4) is arranged on an inner container (12) of the freezer body (1), an air duct (100) is formed by the air duct cover plate and the back of the inner container (12), an auxiliary air inlet (403) in communication with the air duct (100) is provided between the top of the air duct cover plate (4) and the top wall of the inner container (12), and an air inlet area is provided between a volute (31) of the centrifugal fan (3) and the air duct cover plate (4), such that the storage space of the commercial vertical freezer is enlarged.

Description

Commercial vertical freezer

Technical field

The invention belongs to the technical field of refrigeration, and particularly relates to a commercial vertical freezer.

Background technique

At present, refrigeration equipment (refrigerators, freezers, etc.) are electrical equipment frequently used in people's daily lives. Among them, for commercial vertical refrigerators, they are mainly placed in places such as shopping malls and supermarkets, and beverages are mainly placed inside for consumers to take directly. Under normal circumstances, commercial vertical refrigerators are designed with glass doors so that external consumers can directly observe the internal storage conditions.

For the existing commercial vertical refrigerators, because consumers will frequently open and close the door when in use, the cooling speed is required to be able to cool down in a short time, and a high-speed and large-volume air-cooling system is required to meet the requirements. Therefore, conventional commercial vertical refrigerators usually have air ducts on the top of the cabinet. For example: Chinese Patent No. 2017100069513 discloses an air-cooled commercial refrigerator disclosed by a medical refrigeration device, and a centrifugal fan and an evaporator are arranged on the back of the cabinet. In order to meet the air intake requirements of the centrifugal fan, the distance between the air duct cover in the cabinet and the centrifugal fan is relatively large, which causes the storage space in the cabinet to become smaller.

How to design a commercial vertical freezer with large storage space is the technical problem to be solved by the present invention.

Summary of the invention

The invention provides a commercial vertical freezer, which can increase the storage space of the commercial vertical freezer.

In order to achieve the above technical objectives, the present invention adopts the following technical solutions to achieve:

A commercial vertical freezer, including:

A cabinet, the cabinet includes an outer shell and an inner bladder, the inner bladder is arranged in the outer shell, and an insulating layer is formed between the inner bladder and the outer shell;

A refrigeration circuit, which includes a compressor, a condenser, a throttling device, and an evaporator connected together;

A centrifugal fan, the centrifugal fan includes a volute and a centrifugal fan, the front of the volute forms an air inlet, the lower part of the volute forms an air outlet, and the centrifugal fan is located in the volute;

An air duct cover, the air duct cover is provided with an air inlet and an air outlet, and the air inlet is located above the air outlet;

Wherein, the air duct cover is arranged in the inner liner and forms an air duct with the back of the inner liner, and the air duct is connected between the top of the air duct cover and the top wall of the inner liner. The auxiliary air inlet of the air duct, the evaporator and the centrifugal fan are arranged in the air duct, an air inlet area is formed between the volute and the air duct cover plate, and the air inlet is opposite to the air suction inlet Layout.

Further, the top of the air duct cover plate is further provided with a top cover plate extending toward the front side of the cabinet body, and a connection between the top cover plate and the top wall of the liner is formed to communicate with the air duct. Return air channel.

Further, a plurality of longitudinally arranged wind deflectors are provided on the top cover plate.

Further, the rear end of the wind deflector extends backward to the outside of the air duct cover, and the rear end of the wind deflector is also provided with a positioning plate, and the positioning plate abuts against the volute. on.

Further, an air guiding channel for guiding the air toward the air suction port is formed between the positioning plate and the back of the air duct cover.

Further, the air duct cover plate includes:

An upper cover, the air inlet is formed on the upper cover;

A lower cover, the air outlet is formed on the lower cover;

Wherein, the upper cover plate is located above the lower cover plate, the lower edge of the upper cover plate is butted with the upper edge of the lower cover plate, and the upper cover plate is located on the front side of the volute Relatively arranged, the lower cover plate is located on the front side of the evaporator.

Further, both sides of the upper cover plate are provided with a flanging structure extending toward the rear side of the cabinet, and the flanging structure abuts against the back of the inner liner.

Further, an interval is formed between the flanging structure and the side wall of the inner liner, and the flanging structure is also provided with ventilation holes communicating with the air duct.

Further, a spacer is provided on the back of the upper cover plate, and the spacer is arranged transversely below the air inlet and abuts against the volute.

Further, the back of the inner liner is also provided with an outer protrusion protruding outward, the outer protrusion forms a mounting groove inside the inner liner, and the centrifugal fan and the evaporator are arranged on the Install in the groove.

Compared with the prior art, the advantages and positive effects of the present invention are: the auxiliary air inlet is formed between the air duct cover and the top of the inner liner, and the auxiliary air inlet can cooperate with the air inlet on the air duct cover to enter the air to meet the requirements of In this way, the distance between the air duct cover and the volute can be further reduced, so that more space is reserved on the top of the inner liner to store items, and the inner liner is enlarged as a whole. The overall storage space.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Figure 1 is a schematic structural diagram of an embodiment of a commercial vertical freezer according to the present invention;

Figure 2 is a partial cross-sectional view of the commercial vertical freezer in Figure 1;

Fig. 3 is a partial enlarged schematic diagram of area A in Fig. 2;

Fig. 4 is a partial enlarged schematic diagram of area B in Fig. 2;

Fig. 5 is a schematic diagram of the structure of the inner liner in Fig. 1;

Figure 6 is an assembly diagram of the air duct cover, centrifugal fan and water tray in Figure 1;

Fig. 7 is a partial enlarged schematic diagram of area C in Fig. 6;

FIG. 8 is a partial enlarged schematic diagram of area D in FIG. 6;

Figure 9 is one of the structural schematic diagrams of the upper cover in Figure 6;

Fig. 10 is the second structural diagram of the upper cover plate in Fig. 6;

Fig. 11 is a schematic diagram of the structure of the water receiving tray in Fig. 6.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positions The term of relationship is based on the direction or position relationship shown in the drawings, which is only for ease of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Restrictions on the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

As shown in Figures 1 to 11, the present invention provides a commercial vertical freezer, including: a cabinet 1, a refrigeration circuit, a centrifugal fan 3, and an air duct cover 4.

The cabinet 1 includes an outer shell 11 and an inner liner 12. The inner liner 12 is arranged in the outer shell 11, and an insulation layer is formed between the inner liner 12 and the outer shell 11. The refrigeration circuit includes a compressor (not shown), a condenser (not shown), a throttling device (not shown) and an evaporator 2 connected together. The centrifugal fan 3 includes a volute 31 and a centrifugal fan 32. The front of the volute 31 forms an air inlet 301, the lower part of the volute 31 forms an air outlet 302, and the centrifugal fan 32 is located in the volute 31; The air inlet 401 and the air outlet 402 are located above the air outlet 402. The air duct cover 4 is arranged in the inner liner 12 and forms an air duct 100 with the back of the inner liner 12, the area of the inner liner 12 on the front side of the air duct cover 4 forms a storage cavity, and the centrifugal fan 3 and the evaporator 2 are located In the air duct, an air inlet area is formed between the volute 31 and the air duct cover 4, and the air inlet 401 and the air suction inlet 301 are arranged oppositely.

During the actual operation of the freezer, the refrigerant in the refrigeration circuit circulates under the action of the compressor and passes through the evaporator 2 for refrigeration. The air in the inner bladder 12 circulates on the front and rear sides of the air duct cover 4 under the action of the centrifugal fan 3, so that the air in the inner bladder 12 exchanges heat through the evaporator 2 to achieve cooling. Regarding the circulating flow process of the refrigerant in the refrigeration circuit and the working process of the centrifugal fan 3, it is not limited and repeated here.

In order to effectively increase the volume of the storage cavity in the liner 12, corresponding optimization design can be made for the upper and lower spaces of the liner 12, which will be specifically described with reference to the drawings.

The first embodiment is to optimize the design for the upper space of the inner liner 12, and to increase the volume of the storage cavity in the inner liner 12 by reducing the distance between the air duct cover 4 and the volute 31. Specifically, since the suction port 301 of the centrifugal fan 3 faces the air duct cover 4, in order to meet the air intake requirements of the centrifugal fan 3, it is necessary to set a sufficiently large distance between the air duct cover 4 and the volute 31 to Satisfying the requirement of the air inlet volume, in this way, the upper storage space of the inner liner 12 will be reduced. To this end, an auxiliary air inlet 403 is formed between the top of the air duct cover 4 and the top wall of the inner liner 12 to communicate with the air duct.

During the operation of the centrifugal fan 3, the air in the storage cavity in the inner liner 12 enters the air inlet area through the air inlet 401 and the auxiliary air inlet 403, respectively. The air introduced by the air inlet 401 directly enters the volute 31 through the air suction hole, and the air sucked into the auxiliary air inlet 403 will enter the volute 31 from the periphery of the air suction hole. In this way, the amount of air entering the air intake area can be increased through the auxiliary air inlet 403, and the distance between the air duct cover 4 and the volute 31 can be reduced under the premise of satisfying the air intake, thereby increasing the internal Storage space in the upper area of the bladder 12.

In some embodiments, in order to enable the auxiliary air inlet 403 to suck in air from the front area of the inner liner 12 to accelerate the air circulation flow rate in the inner liner 12, the top of the air duct cover 4 is also provided with a cabinet facing the top. The top cover 43 extends from the front side of the body 1, and a return air passage (not marked) connecting the air duct is formed between the top cover 43 and the top wall of the inner liner 12. The return air passage can extend from the top of the inner liner 12 to the front area of the inner liner 12. When the centrifugal fan 3 is running, the air in the front area of the inner liner 12 can be sucked into the return air passage. In this way, the air in the storage cavity of the inner liner 12 can be circulated more uniformly, so that the air in the inner liner 12 can flow more quickly.

Furthermore, a plurality of longitudinally arranged wind deflectors 44 are provided on the top cover 43. Specifically, the air guide plate 44 can guide the airflow entering the return air passage, so that the airflow can be evenly dispersed to the circumference of the air suction port 301, and ensure that a larger suction volume is obtained.

Preferably, the rear end of the wind deflector 44 extends rearward to the outside of the air duct cover 4, and the rear end of the wind deflector 44 is also provided with a positioning plate 45, and the positioning plate 45 abuts against the volute 31. Specifically, during assembly, the positioning plate 45 can abut against the volute 31, so as to facilitate the assembly of the air duct cover 4 into the inner container 12 and accurate positioning and fixing. The positioning plate 45 is arranged above the suction port 301. In this way, an air guide channel (not marked) for guiding the wind toward the suction port 301 is formed between the positioning plate 45 and the back of the air duct cover 4, and the return air The air flow output by the channel will guide the air flow to the suction port 301 below through the air guiding channel.

In other embodiments, the air duct cover 4 includes an upper cover 41 and a lower cover 42. Wherein, an air inlet 401 is formed on the upper cover plate 41, and an air outlet 402 is formed on the lower cover plate 42; the upper cover plate 41 is located above the lower cover plate 42, and the lower edge of the upper cover plate 41 is connected to the upper edge of the lower cover plate 42. The edges are butted together, the upper cover plate 41 is located on the front side of the volute 31 and the lower cover plate 42 is located on the front side of the evaporator 2. Specifically, the air duct cover 4 adopts a split structure, the upper cover 41 will cover the centrifugal fan 3 and the lower cover 42 will cover the evaporator 2. The connection manner of the upper cover 41 and the lower cover 42 can be plug-in or splicing, which is not limited and repeated here.

In some embodiments, both sides of the upper cover 41 are provided with flanging structures 411 extending toward the rear side of the cabinet 1, and the flanging structures 411 abut against the back of the inner liner 12. Specifically, the flanging structure 411 abuts on the inner liner 12 and can shield both sides of the centrifugal fan 3. Preferably, a gap is formed between the flanging structure 411 and the side wall of the inner liner 12, and the flanging structure 411 is also provided with vent holes 412 communicating with the air duct. The vent holes 412 can also realize air on both sides of the top of the liner 12. It enters the air intake area and is sucked into the volute 31 by the air suction port 301. In this way, the air inlet volume can be further increased to meet the requirement of a small distance between the volute 31 and the air duct cover 4.

In a preferred embodiment, a spacer 413 is provided on the back of the upper cover 41, and the spacer 413 is arranged laterally below the air inlet 401 and abuts against the volute 31. Specifically, after the centrifugal fan 3, the evaporator 2 and the air duct cover 4 are assembled into the inner liner 12, the spacer 413 abuts on the volute 31, and the exhaust port 302 and the upper air inlet are connected by the spacer 413 401 is separated from the suction port 301, so that the air output from the exhaust port 302 blows directly to the evaporator 2, thereby avoiding or reducing the air flow output from the exhaust port 302 from being blocked by the evaporator 2 and flowing back to the intake area In, the heat exchange efficiency is improved.

In another embodiment, in order to increase the volume of the storage cavity of the inner liner 12 to a greater extent, the back of the inner liner 12 is also provided with an outwardly protruding portion 121 that protrudes outwardly. A mounting groove is formed in the inside of the, and the centrifugal fan 3 and the evaporator 2 are arranged in the mounting groove. Specifically, by forming the back of the inner liner 12 with an outer protrusion 121 that protrudes toward the outer shell 11, the volume inside the inner liner 12 is further increased, and the centrifugal fan 3 and the evaporator 2 are installed on the outer protrusion 121 to form In the mounting groove, the volume of the storage cavity in the inner liner 12 is maximized.

An auxiliary air inlet is formed between the air duct cover and the top of the liner. The auxiliary air inlet can cooperate with the air inlet on the air duct cover to meet the air intake requirements. In this way, the air duct cover and the worm The distance between the shells is further reduced, so that a larger space is reserved on the top of the liner to store items, which increases the overall storage space of the liner as a whole.

The second embodiment is to optimize the design for the lower space of the inner liner 12, by reducing the overall height dimension of the air duct cover 4, so that the air duct cover 4 is arranged in the upper area of the inner liner 12 to realize the enlargement of the inner liner The volume of the storage cavity in 12. Specifically, a storage space is formed between the lower part of the air duct cover 4 and the bottom of the inner liner 12. The commercial vertical freezer also includes a water receiving tray 5, which is provided with a drainage part 50 for draining outward; wherein, the water receiving tray 5 is provided on the back of the air duct cover 4 and located below the evaporator 2. .

In actual use, the centrifugal fan 3 and the evaporator 2 are installed by forming an air duct in the upper back area of the inner tank 12 through the air duct cover 4. In this way, a space can be reserved in the lower area of the inner liner 12 for placing articles, so that the lower area of the air duct cover 4 can be used to increase the volume of the storage cavity in the inner liner 12.

However, since the air duct cover 4 does not completely cover the back of the inner tank 12, in order to meet the defrosting requirements of the evaporator 2, correspondingly, a water receiving pan 5 is provided on the back of the air duct cover 4. When the evaporator 2 defrosts, the defrosting water will drip into the drain pan 5, and part of the defrosting water will flow into the drain pan 5 along the air duct cover 4 to avoid the appearance of defrosting water in the inner tank 12 The phenomenon of random flow occurs in the middle. In addition, the defrosting water collected in the drain pan 5 is finally uniformly discharged through the drainage part 50.

In some embodiments, the water receiving tray 5 includes: an upper tray body 51, a lower tray body 52 and a supporting plate 53. An upper water collection trough is formed on the upper plate body 51, and a lower water collection trough is formed on the lower plate body 52; a plurality of support plates 53 are arranged between the upper plate body 51 and the lower plate body 52, and between two adjacent support plates 53 An air outlet interval 50 is formed, a connecting flow channel 54 is also provided between the upper water collecting tank and the lower water collecting tank, and an auxiliary air outlet 404 is formed between the lower part of the air channel cover 4 and the back of the inner liner 12.

Specifically, for the upper plate body 51, the edge of the upper plate body 51 will abut against the back of the air duct cover 4, so that the defrosting water dripping from the evaporator 2 can be collected through the upper plate body 51. It can also collect the defrosting water flowing down from the air duct cover 4. At the same time, for the bottom plate 52, the edge of the bottom plate 52 is close to the back of the inner liner 12. The bottom plate 52 can collect the defrosting water dripping from the evaporator 2 and collect it from the inside. Defrosting water flowing down from the gallbladder 12. Further, the upper plate body 51 and the lower plate body 52 are arranged in a staggered arrangement, and the vertical projection of the upper plate body 51 and the vertical projection of the lower plate body 52 form an overlapping area, so as to avoid the leakage from the evaporator 2 Falling defrost water.

In a preferred embodiment, the bottom plate 52 is further provided with a drainage channel extending toward the back of the inner tank 12, the drainage channel is in communication with the lower sump, and the drainage channel forms a drainage portion 50; The back of 12 is also provided with a drainage channel 122 arranged vertically, and the drainage channel is inserted into the drainage channel 122. The defrosting water collected by the upper disc body 51 and the lower disc body 52 is discharged into the drainage channel 122 through the drainage channel, and the defrosting water will flow to the bottom of the inner tank 12 via the guide of the drainage channel 122, and from the inner The drain at the bottom of the tank 12 drains to the outside. Among them, the drainage channel 122 is located on the side of the inner tank 12, and the water receiving pan 5 is arranged obliquely downward toward the side of the drainage channel 122. In this way, the defrosting water can quickly flow to the side of the water receiving pan 5, and It quickly flows into the drainage channel 122. Preferably, both the upper plate body 51 and the lower plate body 52 are inclined downward and extend toward the back of the inner liner 12, and the edge of the lower plate body 52 abuts against the back of the inner liner 12.

Similarly, a drain pipe can also be used to drain the defrosting water in the drain pan 5, that is, the drain 50 is a drain pipe connected to the lower sump, and the drain pipe is arranged on the back of the inner tank 12.

In some embodiments, the back of the air duct cover 4 is further provided with a raised water-retaining rib 421, and the edge of the upper plate 51 abuts under the water-retaining rib 421. Specifically, the defrosting water flows downward along the back of the air duct cover 4 and is blocked by the water-retaining ribs 421 so that the defrosting water passes over the water-retaining ribs 421 and flows into the upper plate 51. In conjunction with the structure in which the upper plate body 51 is arranged obliquely downward, the phenomenon that the defrosting water flows down along the back of the air duct cover 4 and directly drips into the inner tank 12 can be reduced or avoided, and the user experience is improved.

In other embodiments, for the installation method of the water receiving tray 5, it can be installed on the air duct cover 4 in a snap-fitting manner. Specifically, a clamping part 422 is provided on the back of the air duct cover 4, The water pan 5 is provided with a snap-fitting part 55, and the water pan 5 is snap-fitted to the air duct cover 4. Specifically, the clamping portion 422 may be in the form of a clamping slot, and the clamping and mating portion 55 may be in the manner of a claw, and the claw is matched with the clamping groove, so that the water receiving tray 5 is clamped to the air duct cover 4, To facilitate assembly.

The air duct cover is arranged in the upper area of the back of the inner liner, and a storage space is formed between the lower part of the air duct cover and the bottom of the inner liner, so that the lower area of the inner liner obtains a larger storage space and avoids wind The duct cover occupies the entire back of the inner tank, and the air duct occupies more space inside the inner tank, thereby increasing the storage space of the commercial vertical freezer.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, the technical solutions of the foregoing embodiments can still be described. The recorded technical solutions are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

A commercial vertical freezer, which is characterized in that it comprises:

A cabinet, the cabinet includes an outer shell and an inner bladder, the inner bladder is arranged in the outer shell, and an insulating layer is formed between the inner bladder and the outer shell;

A refrigeration circuit, which includes a compressor, a condenser, a throttling device, and an evaporator connected together;

A centrifugal fan, the centrifugal fan includes a volute and a centrifugal fan, the front of the volute forms an air inlet, the lower part of the volute forms an air outlet, and the centrifugal fan is located in the volute;

An air duct cover, the air duct cover is provided with an air inlet and an air outlet, and the air inlet is located above the air outlet;

Wherein, the air duct cover is arranged in the inner liner and forms an air duct with the back of the inner liner, and the air duct is connected between the top of the air duct cover and the top wall of the inner liner. The auxiliary air inlet of the air duct, the evaporator and the centrifugal fan are arranged in the air duct, an air inlet area is formed between the volute and the air duct cover plate, and the air inlet is opposite to the air suction inlet Layout.
The commercial vertical freezer according to claim 1, wherein the top of the air duct cover plate is further provided with a top cover plate extending toward the front side of the cabinet body, and the top cover plate and the inner A return air passage connecting the air duct is formed between the top walls of the bladder.
The commercial vertical refrigerator according to claim 2, wherein a plurality of longitudinally arranged wind deflectors are provided on the top cover plate.
The commercial vertical freezer according to claim 3, wherein the rear end of the air deflector extends rearward to the outside of the air duct cover, and the rear end of the air deflector is also provided with a positioning The positioning plate abuts on the volute.
The commercial vertical refrigerator according to claim 4, characterized in that an air guiding channel for guiding air toward the air suction port is formed between the positioning plate and the back of the air channel cover.
The commercial vertical freezer according to claim 1, wherein the air duct cover plate comprises:

An upper cover, the air inlet is formed on the upper cover;

A lower cover, the air outlet is formed on the lower cover;

Wherein, the upper cover plate is located above the lower cover plate, the lower edge of the upper cover plate is butted with the upper edge of the lower cover plate, and the upper cover plate is located on the front side of the volute Relatively arranged, the lower cover plate is located on the front side of the evaporator.
The commercial vertical freezer according to claim 6, wherein both sides of the upper cover plate are provided with flanging structures extending toward the rear side of the cabinet, and the flanging structure abuts against the The back of the liner.
The commercial vertical freezer according to claim 7, characterized in that a gap is formed between the flanging structure and the side wall of the liner, and the flanging structure is also provided with ventilation communicating with the air duct. hole.
The commercial vertical freezer according to claim 6, characterized in that the back of the upper cover is provided with spacers, and the spacers are arranged transversely below the air inlet and abut on the volute .
The commercial vertical freezer according to claim 1, wherein the back of the liner is further provided with an outer protrusion protruding outward, and the outer protrusion forms a mounting groove inside the inner liner, The centrifugal fan and the evaporator are arranged in the installation groove.