A fresh-keeping refrigeration display cabinet

Abstract

The utility model discloses a kind of fresh-keeping refrigeration display cabinets, comprising: cabinet, circulating air duct, refrigeration system;The circulating air duct is arranged in cabinet;The refrigeration system is connected with circulating air duct, and the refrigeration amount of refrigeration system is transmitted to the inside of cabinet;Several air outlets are provided on the circulating air duct;The air outlet is evenly arranged in circulating air duct.This embodiment can make the rapid cooling in cabinet and the temperature uniform everywhere by setting the inner circulation heat exchange air duct structure in fresh-keeping refrigeration display cabinet, and the temperature uniformity in cabinet will not be affected by the refrigeration short circuit caused by the obstruction of goods stacking in cabinet.This embodiment is further provided with space electromagnetic field discharge net in the inner circulation heat exchange air duct, so that the cabinet is filled with low-frequency magnetic field, and the food material is activated under the action of alternating magnetic field to keep the freshness of food material and prolong the preservation period.It can be widely used in supermarket, catering order, large central kitchen and other places.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration and preservation technology, and more specifically, to a refrigerated display cabinet for preservation. Background Technology

[0002] In large supermarkets, restaurants, and large central kitchens, refrigerated display cases are used to visually showcase fresh fruits and vegetables, poultry, meat, and seafood. These cases are typically equipped with transparent glass doors and LED lighting, and feature multi-layered shelves for easy categorization and display of goods, enhancing the aesthetics and organization of the display. This makes the products inside clearly visible, attracting customers' attention; and is therefore very popular in the market.

[0003] However, these display freezers currently have the following problems: 1. The evaporator is located in the upper part of the freezer, and the cold air outlet and the internal circulation return air vent are also located in the upper part of the freezer. When the freezer is full of goods, it is easy to block the cold air passage, making it difficult for cold air to pass downwards. Cold air circulation in the upper part of the freezer is prone to causing cold air short circuits, resulting in uneven temperature inside the freezer and short shelf life of food; 2. High energy consumption, the refrigeration system uses a fixed frequency compressor that works at high power for a long time; 3. The bottom plate and the side plate of the freezer are connected at the bottom of the freezer, forming a gap around the perimeter. After long-term use, it is difficult to clean the contaminants in the gap. Utility Model Content

[0004] This utility model aims to overcome the shortcomings of the existing refrigerated display cabinets in terms of poor preservation of goods, and provides a refrigerated display cabinet.

[0005] The refrigerated display case includes: a cabinet, a circulating air duct, and a refrigeration system;

[0006] The circulating air duct is located inside the box;

[0007] The refrigeration system is connected to the circulating air duct, which transmits the cooling capacity of the refrigeration system to the inside of the cabinet;

[0008] The circulating air duct is equipped with several air outlets;

[0009] The air outlets are evenly distributed in the circulating air duct.

[0010] The refrigerated display case also includes: an electromagnetic field generator and an electric grid frame;

[0011] The power grid frame is installed inside the box or in the interlayer of the box;

[0012] The electromagnetic field generating device generates electromagnetic fields that are transmitted to the grid frame, and the grid frame forms a spatial electromagnetic field inside the box.

[0013] Preferably, the circulating air duct is arranged vertically inside the housing.

[0014] Preferably, the air outlet is a strip-shaped air outlet.

[0015] Preferably, the circulating air duct is a non-metallic circulating air duct.

[0016] Preferably, the power grid frame is a strip-shaped power grid frame, which is evenly distributed on the surface layer or in the interlayer of the box body.

[0017] Preferably, the refrigerated display case further includes a support, which securely supports the electric grid frame inside the case.

[0018] Preferably, the power grid frame is a metal plate on the inner wall of the box.

[0019] Preferably, the enclosure includes a storage compartment, a machinery compartment, and a cold air outlet; the machinery compartment is located above the storage compartment.

[0020] The refrigeration system is located in the machine room;

[0021] The refrigeration system is connected to the circulating air duct through the cold air outlet, so that the cooling capacity of the refrigeration system can be transferred to the storage room.

[0022] Preferably, the refrigeration system further includes a temperature sensor, which is located in the middle or lower part of the storage compartment.

[0023] Preferably, the bottom of the box body adopts an inner cavity bottom groove structure.

[0024] Preferably, the inner and outer walls of the box are connected by a thermal break structure.

[0025] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0026] This invention provides a refrigerated display case. By incorporating an internal circulating heat exchange duct structure, the display case achieves rapid cooling and uniform temperature distribution throughout, preventing short-circuiting of cold air caused by stacked goods and ensuring consistent temperature uniformity. A spatial electromagnetic field discharge grid is installed within the internal circulating heat exchange duct, filling the display case with a low-frequency magnetoelectric field. Under the influence of this alternating magnetoelectric field, the food is activated, maintaining its freshness and extending its shelf life. This design can be widely used in supermarkets, restaurants, and large central kitchens. Attached Figure Description

[0027] Figure 1 This is a side view of a refrigerated display case as described in Example 1.

[0028] Figure 2 This is a front view of a refrigerated display cabinet as described in Example 1.

[0029] Figure 3 for Figure 1 A magnified view of part A in the middle.

[0030] Figure 4 This is a schematic diagram of a traditional refrigerated display case.

[0031] In the diagram: 1-box, 2-circulating air duct, 3-refrigeration system, 11-storage room, 12-machine room, 21-air outlet, 31-temperature sensor, 41-electromagnetic field generator, 42-electric grid frame, 43-electric grid frame, 43-support. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0033] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes. Example 1

[0034] This embodiment discloses a refrigerated display case for food preservation, such as... Figure 1-3 As shown, the refrigerated display case includes: a cabinet 1, a circulating air duct 2, and a refrigeration system 3;

[0035] The circulating air duct 2 is installed inside the housing 1;

[0036] The refrigeration system 3 is connected to the circulating air duct 2, which transmits the cooling capacity of the refrigeration system 3 to the inside of the cabinet 1;

[0037] The circulating air duct 2 is provided with a number of air outlets 21;

[0038] The air outlets 21 are evenly distributed in the circulating air duct 2.

[0039] It should be noted that in traditional refrigerated display cases, the cooling capacity of the refrigeration system 3 is generally directly delivered into the cabinet 1, and the cold air is distributed throughout the entire cabinet 1 from top to bottom. However, when the cabinet 1 is full of goods, the containers obstruct the flow of cold air, resulting in uneven distribution of cold air within the cabinet 1. In this embodiment, a circulating air duct 2 is set up to transfer the cold air generated by the refrigeration system 3 into the cabinet 1. There are several air outlets 21, which are evenly distributed within the cabinet 1. The number of air outlets 21 can be one or more, depending on the size of the cabinet 1 and the usage of the refrigerated display case. If the cabinet 1 is large and contains a lot of goods, more air outlets 21 can be set. If the cabinet 1 is small and contains less goods, fewer air outlets or one air outlet 21 can be set. If there is only one air outlet 21, it can be set in the middle of the cabinet 1.

[0040] It should be noted that the basic principles of refrigerated display cases are common knowledge and will not be elaborated upon in this embodiment. This embodiment mainly describes improvements to traditional refrigerated display cases. For example, the structure and refrigeration principle of the refrigeration system of the refrigerated display case are not elaborated upon in this embodiment. The existence of corresponding return air vents for the air outlets in the refrigeration system is common knowledge in the field, and this embodiment does not improve upon the traditional solution, nor is it elaborated upon.

[0041] In this embodiment, the circulating air duct 2 is arranged vertically inside the housing 1. The vertically arranged circulating air duct only needs to be set close to the side wall of the housing 1, which is simple in structure. It can ensure the cold air in the middle and lower part of the housing 1 while saving manufacturing costs and storage space inside the housing 1.

[0042] In this embodiment, the air outlet 21 is a strip-shaped air outlet.

[0043] It should be noted that the air outlet 21 described in this embodiment is a strip-shaped air outlet, but it is not limited to a strip-shaped air outlet; it can also be a circular air outlet, a polygonal air outlet, an irregularly shaped air outlet, etc. This embodiment prefers a strip-shaped air outlet to increase its air outlet area and also to prevent goods from falling into the air outlet 21 or the circulating air duct 2. The setting direction of the air outlet 2 can be selected as needed, such as horizontal, vertical, or diagonal.

[0044] In this embodiment, the circulating air duct 2 is a non-metallic circulating air duct.

[0045] In this embodiment, as Figure 3 As shown, the refrigerated display case also includes: an electromagnetic field generator 41 and an electric grid frame 42;

[0046] The power grid frame 42 is installed inside the box 1 or in the interlayer of the box 1;

[0047] The electromagnetic field generating device 41 generates electromagnetic fields that are transmitted to the grid frame 42, and a spatial electromagnetic field is formed inside the box through the grid frame 42.

[0048] It should be noted that in this embodiment, an electromagnetic field is generated by setting an electromagnetic field generator 41, which fills the box 1 with a low-frequency monopole magnetoelectric field. Under the action of the alternating magnetoelectric field, the food is activated and kept fresh, which can greatly extend the shelf life.

[0049] In this embodiment, the power grid frame 42 is a strip-shaped power grid frame, which is evenly distributed on the surface or in the interlayer of the box 1.

[0050] It should be noted that the electric grid frame 42 described in this embodiment is a strip-shaped electric grid frame, but it is not limited to a strip-shaped electric grid frame. It can also be column-shaped or tubular, with one or more columns distributed on the inner surface or in the interlayer of the cabinet, so as to form a uniform spatial electromagnetic field inside the cabinet.

[0051] In this embodiment, the refrigerated display case also includes a support 43, which fixes the electric grid frame 42 inside the box body 1.

[0052] In this embodiment, the housing 1 includes a storage compartment 11, a machine compartment 12, and a cold air outlet 13; the machine compartment 12 is located above the storage compartment 11.

[0053] The refrigeration system 3 is installed inside the machine room 12;

[0054] The refrigeration system 3 is connected to the circulating air duct 2 through the cold air outlet 13, so that the cooling capacity of the refrigeration system 3 is transferred to the storage room 12.

[0055] It should be noted that, as Figure 4 As shown, in traditional refrigerated display cases, the evaporator of the refrigeration system 3 is located in the upper part of the display case, and both the cold air outlet 13 and the internal circulation return air vent are located in the upper part of the display case. When the display case is full of goods, the cold air passage is easily blocked, making it difficult for the cold air to flow downwards. The cold air circulating in the upper part of the display case is prone to short-circuiting, resulting in uneven temperature inside the display case and a short shelf life for the food. In this embodiment, the cabinet 1 is divided into a storage compartment 11 and a mechanical compartment 12, and the refrigeration system 3 is placed in the mechanical compartment 12, which includes the evaporator of the refrigeration system 3. This can effectively solve the problem of the cold air outlet 13 being blocked. In addition, in this embodiment, the air outlet 13 is not open inside the cabinet 1, but is connected to the refrigeration system 3 and the circulation duct 2. The circulation duct 2 then delivers the cold air into the cabinet. Since there are multiple air outlets 21 on the circulation duct, the risk of the cold air being blocked can be effectively avoided.

[0056] In this embodiment, the refrigeration system 3 further includes a temperature sensor 31, which is located in the middle or lower part of the storage compartment 12.

[0057] It should be noted that moving the temperature sensor 31 from the traditional return air vent of the evaporator to the lower middle part of the storage compartment 11 can provide timely feedback on the temperature of the lower middle part of the storage compartment 11, thus avoiding the phenomenon of low temperature in the lower part of the cabinet when the refrigerated display cabinet is used for a long time.

[0058] In this embodiment, the bottom of the box 1 adopts an inner cavity bottom groove structure.

[0059] It should be noted that the bottom of the cabinet 1 adopts an inner cavity bottom groove structure. This ensures that the interface between the bottom of the cabinet 1 and the inner side panel of the cabinet 1 is far from the bottom of the cabinet. The inner cavity bottom groove is an independent, seamless structural component, making it easy to clean contaminants from the bottom plate.

[0060] In this embodiment, a thermal break structure is used between the inner and outer walls of the enclosure 1. This effectively improves the cooling and insulation performance of the enclosure 1.

[0061] In addition, the power supply of the refrigerated box described in this embodiment adopts frequency conversion technology, which controls the compressor speed and adjusts the opening of the electronic expansion valve to regulate the refrigeration capacity by changing the frequency of the power supply to the compressor. When there is a large difference between the temperature inside the box 1 and the set temperature, the compressor runs at high speed to quickly reach the set temperature value; after reaching the set temperature, the compressor speed decreases to maintain a stable temperature inside the box, operating with low energy consumption, avoiding the energy waste of repeated start-stop of the fixed frequency compressor, and saving more electricity for long-term use. Example 2

[0062] This embodiment discloses a refrigerated display cabinet for food preservation. This embodiment includes most of the technical features described in Embodiment 1. For the same technical features, this embodiment will not repeat them.

[0063] Unlike Embodiment 1, the electric grid frame 42 in this embodiment is a metal plate on the inner wall of the cabinet 1. Using the metal plate on the inner wall of the cabinet 1 as the electric grid frame 42 can, on the one hand, achieve a uniform distribution of the low-frequency monopole magnetoelectric field generated by the electromagnetic field generator 41 within the cabinet 1, and on the other hand, save on the manufacturing cost of the refrigerated display cabinet.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A refrigerated display case for food preservation, characterized in that, include: Cabinet (1), circulating air duct (2), refrigeration system (3); The circulating air duct (2) is installed inside the housing (1); The refrigeration system (3) is connected to the circulating air duct (2) to transfer the cooling capacity of the refrigeration system (3) to the inside of the box (1); The circulating air duct (2) is provided with several air outlets (21); The air outlets (21) are evenly arranged in the circulating air duct (2); The refrigerated display case also includes: an electromagnetic field generator (41) and an electric grid frame (42). The power grid frame (42) is installed inside the box (1) or in the interlayer of the box (1); The electromagnetic field generating device (41) generates electromagnetic fields that are transmitted to the grid frame (42), and a spatial electromagnetic field is formed inside the box through the grid frame (42).

2. The refrigerated display case according to claim 1, characterized in that, The circulating air duct (2) is arranged vertically inside the box (1).

3. A refrigerated display case according to claim 2, characterized in that, The air outlet (21) is a strip-shaped air outlet.

4. A refrigerated display case according to claim 3, characterized in that, The power grid frame (42) is a strip-shaped power grid frame, which is evenly distributed on the surface of the box (1) or in the interlayer of the box (1).

5. A refrigerated display case according to claim 4, characterized in that, The refrigerated display case also includes a support (43), which fixes the electric grid frame (42) inside the box body (1).

6. A refrigerated display case according to claim 3, characterized in that, The power grid frame (42) is the inner wall metal plate of the box (1).

7. A refrigerated display case according to claim 5 or 6, characterized in that, The enclosure (1) includes a storage compartment (11), a machine compartment (12), and a cold air outlet (13); the machine compartment (12) is located above the storage compartment (11); The refrigeration system (3) is located inside the machine room (12); The refrigeration system (3) is connected to the circulating air duct (2) through the cold air outlet (13) to realize the transmission of the cold energy of the refrigeration system (3) to the storage room (11).

8. A refrigerated display case according to claim 7, characterized in that, The refrigeration system (3) also includes a temperature sensor (31), which is located in the middle or lower part of the storage compartment (11).

9. A refrigerated display case according to claim 1 or 8, characterized in that, The bottom of the box (1) adopts an inner cavity bottom groove structure.

10. A refrigerated display case according to claim 9, characterized in that, The inner and outer walls of the box (1) are connected by a thermal break structure.

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