CN111449457A

CN111449457A - Showcase for refrigeration

Info

Publication number: CN111449457A
Application number: CN202010507102.8A
Authority: CN
Inventors: 解金辉; 卢起彪; 陆文怡; 朱文琪; 邓涵; 孟贺
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-07-28

Abstract

The invention provides a refrigerated display cabinet which comprises a cabinet body, an evaporator, a fan and a return air cavity, wherein the evaporator and the fan are arranged in the return air cabinet body, the return air cavity is arranged in the return air cabinet body, airflow flows to the return air cavity through a return air inlet, the return air evaporator is arranged in the return air cavity, and the windward side of the return air evaporator is a curved surface. The refrigerated display cabinet provided by the invention designs the windward side of the evaporator into a curved surface, and increases the contact area of the windward side of the evaporator and return air while matching with the structure in the return air cavity. The heat exchange efficiency of the evaporator is improved, the space of the air return cavity in the cabinet body is utilized more reasonably, the problem that the evaporator is frequently frosted and defrosted is solved, and the storage effect of the refrigerated display cabinet is improved.

Description

Showcase for refrigeration

Technical Field

The invention belongs to the technical field of freezing and refrigeration, and particularly relates to a refrigerated display cabinet.

Background

The vertical open-type refrigerated showcase is highly popular among customers due to the advantages of elegant appearance, refrigeration and preservation, omnibearing display and display of commodities, convenience for customers to select and the like, and is widely applied to supermarkets and markets in recent years.

The conventional refrigerated display cabinet is generally provided with an axial flow fan at the bottom to promote the circulation of air; the evaporator is located in the first air duct 5 on the back of the display cabinet and is limited by the structure, the windward area of the evaporator is small, the wind resistance is large, the heat exchange efficiency of circulating air and the evaporator is low, the evaporator is easy to frost, the evaporator frequently enters the defrosting mode to cause the temperature of the cabinet to rise, and the fresh-keeping effect is poor. If the defrosting frequency of the evaporator is reduced, the circulating air quantity is increased or the volume of the evaporator is increased. The increase of the circulating air quantity needs the increase of the rotating speed of the fan, the rotating speed of the fan is increased, so that the power of the fan is increased, and the energy consumption of the whole machine is increased. In addition, the increase of the rotating speed can also cause the noise of the whole machine to be increased, the air drying phenomenon on the surface of the food is aggravated, and the storage effect is reduced on the contrary. If the evaporator volume is increased, the cost is increased more.

In addition, the bottom of the conventional refrigerated display cabinet is provided with an axial flow fan, and a part of spare space is not utilized, so that waste is caused.

Disclosure of Invention

The invention aims to provide a refrigerated display cabinet to solve the problem that an evaporator is easy to frost due to the fact that the evaporator in the prior art is small in windward area and large in wind resistance.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a refrigerated display case, includes the cabinet body, sets up internal evaporimeter, the fan of cabinet, set up and be in the internal return air chamber of cabinet, the air current passes through the return air inlet flow direction the return air chamber, the return air intracavity sets up the evaporimeter, the windward side of evaporimeter is the curved surface.

Further, the evaporator is in a bent V shape.

Further, the windward side of the evaporator is convex and faces the air return opening.

Further, the windward side of the evaporator is a concave surface and faces the air return opening.

Further, the cabinet body is provided with a first air duct communicated with the air return cavity, the first air duct supplies air to the refrigerating chamber through a first air outlet, and the fan is arranged in the first air duct.

Further, the fan is a cross-flow fan.

Furthermore, a partition plate is arranged between the first air duct and the refrigerating chamber, and an air supply hole for communicating the first air duct with the refrigerating chamber is formed in the partition plate.

Furthermore, a plurality of shelves for bearing food are arranged on the partition plate, and reinforcing ribs are arranged on the shelves close to the partition plate.

Furthermore, a second air duct is formed in the cabinet body and communicated with the air return cavity, the second air duct supplies air to the refrigerating chamber through a second air outlet, the second air duct is located on the outer side of the first air duct, and the second air outlet is located on the outer side of the first air outlet.

Furthermore, the cabinet body is provided with a first water pan, a drain pipe and a second water pan, the first water pan is arranged below the evaporator, the second water pan is located in the mechanical chamber at the bottom of the cabinet body, and defrosting water in the first water pan is guided into the second water pan through the drain pipe.

The refrigerated display cabinet provided by the invention has the beneficial effects that: compared with the prior art, the invention designs the windward side of the evaporator into a curved surface, and increases the contact area between the windward side of the evaporator and return air while matching with the structure in the return air cavity. The heat exchange efficiency of the evaporator is improved, the space of the air return cavity in the cabinet body is utilized more reasonably, the problem that the evaporator is frequently frosted and defrosted is solved, and the storage effect of the refrigerated display cabinet is improved.

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 or the prior art descriptions will be briefly described 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 to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic illustration of a prior art refrigerated display case, with portions of the structure not shown;

fig. 2 is a first schematic structural view of a refrigerated display case according to an embodiment of the present invention, with a portion of the structure not shown;

FIG. 3 is a first schematic structural diagram of an evaporator according to an embodiment of the present invention;

fig. 4 is a second schematic structural view of the refrigerated display case according to the embodiment of the present invention, a part of the structure is not shown;

fig. 5 is a schematic structural diagram of an evaporator according to an embodiment of the present invention.

Wherein, in the drawings, the reference numerals are mainly as follows:

1. a cabinet body; 2. an evaporator; 3. an air return cavity; 4. an air return opening; 5. a first air duct; 6. a first air outlet; 7. a cross-flow fan; 8. a partition plate; 9. a shelf; 10. reinforcing ribs; 11. a second air duct; 12. a second air outlet; 13. a drain pipe; 14. an axial flow fan.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 3 together, a refrigerated showcase according to an embodiment of the present invention will now be described. The refrigerated display cabinet comprises a cabinet body 1, an evaporator 2 and a fan, wherein the evaporator 2 and the fan are arranged in the cabinet body 1, a return air cavity 3 is formed in the cabinet body 1, air flows to the return air cavity 3 through an air return opening 4, the evaporator 2 is arranged in the return air cavity 3, and the windward side of the evaporator 2 is designed into a curved surface so as to increase the contact area between the evaporator 2 and return air. The structure in the cabinet body 1 return air chamber 3 is mostly irregular, consequently, designs into the curved surface with the windward side of evaporimeter 2 to with the structure phase-match in return air chamber 3, make the space in return air chamber 3 utilized more rationally.

Compared with the prior art, the refrigerated display cabinet provided by the invention has the advantages that the windward side of the evaporator 2 is designed into a curved surface, and the contact area between the windward side of the evaporator 2 and return air is increased while the windward side of the evaporator is matched with the structure in the return air cavity 3. The heat exchange efficiency of the evaporator 2 is improved, the problem that the evaporator 2 is frequently frosted and defrosted is solved, and the storage effect of the refrigerated display cabinet is improved.

Preferably, please refer to fig. 4 and 5, the evaporator 2 is designed to be bent to be "V" shaped, and certainly, the evaporator 2 may be bent to be "W" shaped or wave shaped to increase the windward area of the evaporator 2, which is the best design according to the actual situation and the specific structure of the cabinet 1, and the most preferred shape in this scheme is "V". Particularly, when the evaporator is installed, the windward side of the evaporator 2 may be designed to be convex, and the convex side is installed toward the return air inlet 4. Alternatively, the windward side of the evaporator 2 may be designed to be concave, and the concave may be installed toward the return air inlet 4.

Specifically, please refer to fig. 1 to 3 together, the cabinet body 1 is provided with a first air duct 5, the first air duct 5 is communicated with the air return cavity 3, the first air duct 5 supplies air to the refrigerating chamber through a first air outlet 6, and a fan is arranged in the first air duct 5, the fan adopted in the scheme is a cross-flow fan 7, compared with an axial flow fan 14 used in a conventional refrigerated display cabinet, the cross-flow fan 7 can improve the air flow rate and the air volume of return air, so that the air heat exchange is more uniform, the storage and preservation effects are better, and the noise is reduced. A partition plate 8 is arranged between the first air duct 5 and the refrigerating chamber, a plurality of air supply holes (not shown in the figure) are formed in the partition plate 8, and the first air duct 5 conveys cold air into the refrigerating chamber through the air supply holes, wherein the main conveyed cold air is input from the air supply holes. A plurality of shelves 9 are arranged on the partition plate 8, the shelves 9 are used for bearing food needing to be frozen and refrigerated, and reinforcing ribs 10 are arranged at the joints of the shelves 9 and the partition plate 8 in order to ensure the installation stability of the shelves 9. The cabinet body 1 is further provided with a second air duct 11 and a second air outlet 12, the air return cavity 3 is communicated with the second air duct 11, the second air duct 11 supplies air through the second air outlet 12, the second air duct 11 is arranged on the outer side of the first air duct 5, and the second air outlet 12 is located on the outer side of the first air outlet 6. The first air duct 5 and the first air outlet 6 are mentioned above, wherein the first air duct 5 mainly delivers cold air, and the second air duct 11 mainly delivers natural return air, that is, the temperature of the air delivered by the first air duct 5 is lower than that of the air delivered by the second air duct 11. Since the temperature of the air blown from the first outlet 6 is lower than the temperature of the air blown from the second outlet 12, the second outlet 12 is provided outside the first outlet 6 in order to separate the air blown from the first outlet 6 from the high-temperature outside air.

In addition, the cabinet body 1 is further provided with a first water pan (not shown), a drain pipe 13 and a second water pan (not shown), the first water pan is arranged below the evaporator 2, the second water pan is located in the mechanical chamber at the bottom of the cabinet body 1, and defrosting water in the first water pan is guided into the second water pan through the drain pipe 13.

Referring to fig. 1 to 5, the following is a detailed description of the present invention:

according to the invention, the evaporator 2 and the cross-flow fan 7 are arranged at the bottom of the refrigerated display cabinet (namely in the air return cavity 3), and the bent evaporator 2 is adopted, so that compared with the conventional fin evaporator 2, the bent evaporator 2 has the advantages that the windward area is enlarged, the wind resistance is small, the heat exchange efficiency of the evaporator 2 is greatly improved, the evaporation temperature is high, the evaporator 2 is not easy to frost, the defrosting frequency is greatly reduced, the energy is saved, and the temperature in the cabinet is maintained better. The evaporator 2 and the cross-flow fan 7 are simultaneously arranged at the bottom of the display case, and particularly, the cross-flow fan 7 is arranged in the first air duct 5, so that the whole structure is more compact. The overall structure and the degree of bending of the bent evaporator 2 are matched with the structure of the bottom of the display cabinet, so that the windward area of the evaporator 2 can be maximized.

The conventional refrigerated showcase adopts a method of installing the axial flow fan 14 at the bottom to promote the air circulation, but due to the limitation of the bottom structure of the showcase and the characteristics of the axial flow fan 14, the conventional showcase is easy to have the problems of insufficient heat exchange between food and air in the showcase and between the air in the showcase and the evaporator 2, uneven heat exchange, high noise and high energy consumption. Compared with the conventional refrigerated display case, the novel display case is provided with the fan arranged in the first air duct 5 at the back of the display case, and the cross-flow fan 7 is adopted. The cross-flow fan 7 can improve the air flow speed and the air quantity of return air, so that the air heat exchange is more uniform, the temperature in the display cabinet is always in a uniform and stable state, and the storage and preservation effects are better. And the adoption of the cross-flow fan 7 avoids increasing the rotating speed of the fan to increase the air flow speed, can reduce the noise to a certain extent and saves energy. The cross-flow fan 7 penetrates through the first air duct 5 at the back of the display case and is parallel to the bent evaporator 2, so that return air cooled on the evaporator 2 is uniformly conveyed into the display case, and the display case is always in a stable and uniform temperature state.

The circulation mode of the novel display cabinet gas is as follows: when the return air with higher temperature enters from the return air inlet 4, the return air is fully cooled on the bending type evaporator 2 to become low-temperature air, then the cold air is respectively conveyed to the periphery of each shelf 9 in the cabinet through the vent holes (not shown in the attached drawing) and the first air outlet 6 under the action of the cross-flow fan 7, the cold air enters the air channel from the return air inlet 4 again after absorbing the heat of the food, and exchanges heat with the bending type evaporator 2 for cooling, and the circulation is carried out, so that the whole display cabinet is always in a low-temperature stable state, the food is refrigerated and preserved, and the preservation effect is improved.

The structure of the folding type evaporator 2 may also be a structure folded downward as shown in fig. 3 and 5. And the integral structure and the bending degree of the evaporator 2 are matched with the structure of the bottom of the display cabinet, so that the maximum windward area of the evaporator 2 can be selected optimally.

The invention can also change the cross flow fan 7 into the axial flow fan 14, the position of the axial flow fan 14 is the same as that of the cross flow fan 7, but the number of the axial flow fans 14 can be increased properly, so that the heat exchange of the return air is more uniform, and the temperature in the display cabinet is uniform and stable.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Refrigerated display case, including the cabinet body, set up internal evaporimeter, the fan of cabinet are seted up and are established the internal return air chamber of cabinet, the air current passes through the return air inlet flow direction return air chamber, its characterized in that: the evaporator is arranged in the air return cavity, and the windward surface of the evaporator is a curved surface.

2. A refrigerated display case as recited in claim 1 wherein: the evaporator is in a bent V shape.

3. A refrigerated display case as recited in claim 2 wherein: the windward side of the evaporator is a convex surface and faces the air return opening.

4. A refrigerated display case as recited in claim 2 wherein: the windward side of the evaporator is a concave surface and faces the air return opening.

5. A refrigerated display case as recited in claim 1 wherein: the cabinet body is provided with a first air duct communicated with the air return cavity, the first air duct supplies air to the refrigerating chamber through a first air outlet, and the fan is arranged in the first air duct.

6. A refrigerated display case as recited in claim 5 wherein: the fan is a cross-flow fan.

7. A refrigerated display case as recited in claim 5 wherein: a partition plate is arranged between the first air duct and the refrigerating chamber, and an air supply hole communicated with the first air duct and the refrigerating chamber is formed in the partition plate.

8. A refrigerated display case as recited in claim 7 wherein: the shelf is characterized in that a plurality of shelves for bearing food are arranged on the partition plate, and reinforcing ribs are arranged at the joints of the shelves and the partition plate.

9. A refrigerated display case as recited in claim 5 wherein: the cabinet body is provided with a second air duct which is communicated with the air return cavity, the second air duct supplies air to the refrigerating chamber through a second air outlet, the second air duct is located on the outer side of the first air duct, and the second air outlet is located on the outer side of the first air outlet.

10. A refrigerated display case as recited in claim 1 wherein: the defrosting water dispenser is characterized in that a first water pan, a drain pipe and a second water pan are arranged on the cabinet body, the first water pan is arranged below the evaporator, the second water pan is located in the mechanical chamber at the bottom of the cabinet body, and defrosting water in the first water pan is guided into the second water pan through the drain pipe.