A food preservation display cabinet

Abstract

The present application relates to a food preservation display cabinet, which belongs to the field of preservation equipment. The food preservation display cabinet comprises a cabinet body, which has a rear side panel, a front side panel, a left side panel and a right side panel, which enclose a food storage cavity of the food preservation display cabinet, and the cabinet body has an open side and an open top surface, which are connected to form a display opening of the cabinet body; the food preservation display cabinet also comprises a placement rack, which is arranged in the storage cavity of the cabinet body; a winding roller, which is arranged on the rear side panel of the cabinet body; a closed roller curtain, one end of which is wound on the winding roller, and the other end can be stretched to close the display opening; the closed roller curtain ensures that cold air can be maintained in the storage cavity for a certain period of time, reduces the possibility of cold air overflowing to the outside and contacting the external environment, and reduces the consumption of cold air by the external environment; since the cold air can be maintained in the storage cavity for a certain period of time, the cold air can be intermittently input, thereby reducing the energy consumption of the food preservation display cabinet.

Description

Technical Field

[0001] The invention relates to the field of fresh-keeping devices, and in particular to a food fresh-keeping display cabinet. Background Art

[0002] Food preservation display cabinets extend the shelf life by lowering the temperature and reducing the activity rate of bacteria inside the food. For example, the Malatang fresh vegetable preservation cabinets and other food storage cabinets needed for Malatang on the market can prevent oxidation, rot and mildew, and are therefore popular among snack bar operators on the market. In order to facilitate customers to select ingredients, most of the current food preservation display cabinets are open. Therefore, in order to ensure the freshness of the ingredients, the market often installs a refrigeration device in the fresh-keeping display cabinet and blows the cold air onto the ingredients through the cold air holes to achieve the effect of preservation. However, this method of preservation requires the refrigeration device to work continuously and blow cold air onto the ingredients continuously, but at the same time it increases power consumption and increases the cost of operators. On the other hand, since most display cabinets are open and the internal shelves are generally arranged in multiple layers, when the cold air is continuously blown onto the ingredients, half of the cold air is actually continuously consumed by the external environment, resulting in a waste of cold air. When the cold air blown out of the display cabinet reaches the top layer of the shelf, the cold air that enters is actually very little, resulting in the inability to effectively preserve the ingredients on the top, which cannot meet the operator's usage requirements. Summary of the invention

[0003] The present application aims to solve the problem that the existing food preservation display cabinet has an open structure, so that half of the cold air is consumed by the external environment during the process of continuous blowing of cold air onto the food, resulting in waste of cold air. In addition, the cold air needs to be continuously supplied, and the refrigeration device needs to work continuously, which increases energy consumption. Therefore, the present application designs a food preservation display cabinet, which is specifically:

[0004] A food preservation display cabinet, comprising a cabinet body, the cabinet body having a rear side panel, a left side panel and a right side panel, the rear side panel, the left side panel and the right side panel enclosing a food storage cavity of the fresh-keeping display cabinet, the cabinet body having an open side surface and an open top surface, the open side surface and the open top surface are connected to form a display opening of the cabinet body; the fresh-keeping display cabinet also includes:

[0005] A placing rack, which is arranged in the storage cavity of the cabinet and is used to place food ingredients;

[0006] A winding roller, which is arranged on the rear side plate of the cabinet;

[0007] A closed roller shutter has one end wound on a winding roller, and the other end can be stretched to the front side panel on the front side of the cabinet to show that the opening is closed.

[0008] Preferably, the winding roller is arranged on the outer wall of the rear side plate, and the arrangement height of the winding roller is smaller than the top end height of the side plate.

[0009] Preferably, the top end surface of the rear side plate on which the winding roller is arranged on the cabinet is a curved surface.

[0010] Preferably, it also includes:

[0011] Support bars, which are respectively arranged at the top ends of the left side plate, the right side plate and the front side plate, and are provided with a plurality of air extraction ports;

[0012] An airway is arranged in the support bar and is connected with the air extraction port;

[0013] A vacuum pump is connected to the airway through a connecting pipe.

[0014] Preferably, the support bar is U-shaped, a V-shaped groove is provided on the lower bottom plate of the support bar, and the air suction port is arranged on the surface of the V-shaped groove.

[0015] Preferably, a rubber pad is further provided on the surface of the V-shaped groove, and the shape of the rubber pad is the same as that of the V-shaped groove. A through hole is provided on the rubber pad, the diameter of the through hole is smaller than the size of the air suction port, and the center of the through hole is in a straight line with the center of the air suction port.

[0016] Preferably, the surface of the V-shaped groove is provided with a mounting hole, the mounting hole is connected to the airway, and the two ends of the rubber pad are provided with a clamping protrusion that cooperates with the mounting hole on the bottom surface that fits the V-shaped groove. The clamping protrusion can be inserted into the mounting hole to fix the rubber pad.

[0017] Preferably, the cross-section of the support bar is square, and there is a cavity inside the support bar, the cavity forms an airway, the air exhaust port is arranged on the upper surface of the support bar, and a rubber pad is provided on the upper surface of the support bar. The rubber pad is U-shaped, and a through hole is provided at the bottom of the rubber pad. A plurality of hollow ventilation columns are provided at the bottom of the rubber pad, and the ventilation columns are installed at the air exhaust port, and the ventilation columns are respectively connected to the through holes and the airway.

[0018] Preferably, an inverted truncated cone-shaped fixing protrusion is provided at the bottom of the ventilation column.

[0019] Preferably, a connection surface of the rubber pad connected to the ventilation column is wrapped with a plurality of steel bars arranged at intervals.

[0020] The present invention achieves the closure of the storage cavity of the cabinet by arranging a closed roller shutter on the cabinet, ensuring that the cold air can be maintained in the storage cavity for a certain period of time, which can not only ensure the uniformity of food preservation on the upper and lower shelves in the storage cavity, but also reduce the possibility of cold air overflowing to the outside and contacting the external environment, thereby reducing the consumption of cold air by the external environment. Moreover, since the cold air can be maintained in the storage cavity for a certain period of time, the cold air can be intermittently input, thereby reducing the energy consumption of the fresh-keeping display cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 The structural diagram at I in the middle;

[0023] Figure 3 It is a cross-sectional view of the cross section of the support strip and the rubber pad, and a state diagram of the vacuum pump not exhausting air;

[0024] Figure 4 It is a cross-sectional view of the cross section of the support strip and the rubber pad, and a state diagram of the vacuum pump exhausting;

[0025] Figure 5 for Figure 4 Cross-sectional view of AA in the middle;

[0026] Figure 6 A cross-sectional view of another form of a cross section of a support strip and a rubber pad, and a state view of a vacuum pump not evacuating air;

[0027] Figure 7 Bit Figure 6 The state diagram of the vacuum pump pumping;

[0028] Figure 8 for Figure 6 Cross-section of BB.

[0029] In the figure, 1, cabinet, 101, front side panel, 102, left side panel, 103, right side panel, 104, rear side panel, 105, food storage chamber, 2, sealing device, 201, support bar, 201a, upper bottom plate, 201b, lower bottom plate, 202, rubber pad, 203, through hole, 204, V-shaped groove, 205, air extraction port, 206, air duct, 3, closed roller shutter, 4, winding roller, 5, placement rack, 501, placement slot, 6, vacuum pump, 7, connecting pipe, 8, mounting hole, 9, clamping protrusion, 10, ventilation column, 11, steel bar, 12, fixing protrusion. DETAILED DESCRIPTION

[0030] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0031] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] like Figure 1-8 As shown, a food preservation display cabinet has a refrigeration device inside. The refrigeration device uses a traditional compressor for refrigeration. Cold air is input into the fresh-keeping display cabinet from the bottom through a cold air pipe. This part is a well-known technology in the field and will not be described in detail here. The above-mentioned food preservation display cabinet includes a cabinet body 1, which is square and has a rear side panel 104, a left side panel 102 and a right side panel 103. The rear side panel 104, the left side panel 102 and the right side panel 103 surround a food storage chamber 105 of the fresh-keeping display cabinet. The cabinet body 1 has an open side and an open top surface, and the open side and the open top surface are connected to form a display port of the cabinet body 1 (the display port is not marked). Since the front side panel 101 and the top surface of the cabinet body 1 are open structures, the food storage chamber 105 is also open. The cabinet body 1 also includes a placement rack 5, a winding roller 4 and a closed roller curtain 3. The placement rack 5 is arranged in the food storage chamber 105 of the cabinet body 1, so that customers can choose food by themselves. The placement rack 5 can be arranged in multiple layers from top to bottom. When the multi-layer placement rack 5 is arranged, it is stepped from top to bottom. A plurality of placement slots 501 are provided on the placement rack 5. Food plates are placed Placed in the placement slot 501; in order to prevent the cold air from being consumed by the external environment when being input into the placement rack 5, resulting in a waste of most of the cold air, and due to the consumption of the external environment during the process of inputting the cold air from bottom to top, the cold air reaching the upper placement rack 5 is much smaller than that of the lower placement rack 5, resulting in the problem of uneven preservation, a winding roller 4 is provided on the outer wall of the rear side plate 104 of the cabinet 1, and a closed roller curtain 3 is wound on the winding roller 4. The closed roller curtain 3 is wound on the winding roller 4 by a vortex spring. The closed roller curtain 3 can be pulled to the front side plate 101 of the cabinet 1 at the front side to close the entire display port, thereby preventing the cold air in the food storage cavity 105 from exchanging heat with the external environment, resulting in a waste of cold air. In addition, due to the existence of the closed roller curtain 3, the cold air can be maintained in the food storage cavity 105 for a certain period of time, and the cold air can be input intermittently to reduce the energy consumption of the fresh-keeping display cabinet.

[0033] Furthermore, in order to prevent the leakage of cold air between the closed roller curtain 3 on the winding roller 4 and the rear side panel 104 of the cabinet 1, the height of the winding roller 4 is set to be smaller than the height of the top end of the rear side panel 104 of the cabinet 1. In this way, when the closed roller curtain is pulled to the front side of the cabinet, it will flow over the top end of the rear side panel of the cabinet and be pressed tightly against the top end of the rear side panel of the cabinet to achieve self-sealing.

[0034] Furthermore, in order to ensure that the closed roller shutter is pressed more tightly against the top of the rear side panel of the cabinet, the top of the rear side panel 104 of the cabinet 1 is set to be an arc shape. When the closed roller shutter 3 is pulled over the top of the rear side panel 104 of the cabinet 1 to the front side of the cabinet 1, the closed roller shutter 3 is tightly attached to the top of the rear side panel 104 of the cabinet 1, further preventing cold air from leaking from there.

[0035] Furthermore, in order to prevent the cold air from leaking from the closed roller curtain 3 and the upper surfaces of the left side plate 102, the right side plate 103 and the front side plate 101 of the cabinet 1, a sealing device 2 is further provided on the cabinet 1, and the sealing device 2 can seal the closed roller curtain 3 along the circumference of the display opening, which can further reduce the heat exchange between the cold air and the outside, resulting in the waste of cold air. Specifically, Figure 3-Figure 5 As shown, the sealing device 2 includes a support bar 201, an air duct 206 and a vacuum pump 6. The support bar 201 is a "ㄈ" type, and the support bar 201 is an integral structure. The lower bottom plate 201b of the support bar 201 is respectively arranged on the upper surface of the left side plate 102, the upper surface of the right side plate 103 and the upper surface of the front side plate 101 of the cabinet body 1, and a plurality of air extraction ports 205 are arranged on the lower bottom plate 201b of the support bar 201. The left and right edges of the closed roller blind 3 are arranged in the support bar 201. The upper bottom plate 201a of the support bar 201 can limit the upper surface of the closed roller blind 3 to prevent the closed roller blind 3 from being easily bent in the up and down directions when it is not sealed. The opening 205 is connected to the air duct 206 arranged on the lower bottom plate 201b of the support bar 201. At the same time, the vacuum pump 6 is arranged on the outer wall of the front side plate 101 of the cabinet 1. The vacuum pump 6 is connected to the air duct 206 through the connecting pipe 7. When the closed roller shutter 3 closes the display opening, the closed roller shutter 3 is pulled to the front side plate 101 of the cabinet 1, and the vacuum pump 6 is started. The vacuum pump 6 evacuates the air from the exhaust port 205, so that the closed roller shutter 3 is firmly adsorbed on the lower bottom plate 201b of the support bar 201, forming a seal for the food storage cavity 105, and further reducing the amount of cold air entering the external environment. The vacuum pump 6 here is directly adopted from the market, and its structure is the existing technology, so it is not repeated here.

[0036] Further preferably, in order to further enhance the sealing effect, a V-shaped groove 204 is provided on the lower bottom plate 201b of the support bar 201, and a plurality of air suction ports 205 are provided on two opposite surfaces of the V-shaped groove 204. By providing the V-shaped groove 204, when the closed roller curtain 3 is adsorbed, the closed roller curtain 3 is deformed under the action of the suction force and also becomes a V-shape here, thereby increasing the contact area between the closed roller curtain 3 and the lower bottom plate 201b of the support bar 201, and improving the sealing strength of the closed roller curtain 3.

[0037] Furthermore, a rubber pad 202 is provided on the surface of the V-shaped groove 204. The shape of the rubber pad 202 is the same as that of the V-shaped groove 204. A through hole 203 is provided on the rubber pad 202. The diameter of the through hole 203 is smaller than the size of the air suction port 205, and the center of the through hole 203 is in a straight line with the center of the air suction port 205. When the vacuum pump 6 is evacuating air, the closed roller curtain 3 is adsorbed on the rubber pad 202. The adsorption force acts on the rubber pad 202, causing the rubber pad 202 to undergo elastic deformation, thereby increasing the degree of adhesion between the rubber pad 202 and the closed roller curtain 3 and improving the sealing effect. At the same time, since the diameter of the through hole 203 on the rubber pad 202 is smaller than that of the support The size of the exhaust port 205 on the support bar 201 is such that when the vacuum pump 6 is exhausting air, the air between the rubber pad 202 and the V-groove 204 of the support bar 201 is firstly exhausted, so that the rubber pad 202 is firmly adsorbed on the surface of the V-groove 204. In addition, due to the existence of the through hole 203, the air between the rubber pad 202 and the closed roller curtain 3 is exhausted, ensuring that the closed roller curtain 3 is firmly adsorbed between the rubber pad 202. On the one hand, it not only fixes the rubber pad 202 and enhances the sealing strength between the rubber pad 202 and the support bar 201, but also can seal the closed roller curtain 3 and the rubber pad 202, thereby improving the sealing effect.

[0038] Further, in order to prevent the closed roller blind 3 from being sucked and sealed, Figure 5 As shown, in order to fix the rubber pad 202, mounting holes 8 are provided at both ends of the surface of the V-groove 204, and the mounting holes 8 are connected to the air duct 206. The two ends of the rubber pad 202 are provided with clips 9 that cooperate with the mounting holes 8 on the bottom surface that fits the V-groove 204. The clips 9 can be inserted into the mounting holes 8 to fix the rubber pad 202. When the closed roller shutter 3 is adsorbed and sealed, the adsorption force will make the clips 9 squeeze more forcefully in the mounting holes 8, thereby improving the fixing reliability of the rubber pad 202. However, when the closed roller shutter 3 is not adsorbed and sealed, the rubber pad 202 can still be fixed by inserting the clips 9 into the mounting holes 8.

[0039] Furthermore, the cross-sectional shape of the support bar 201 may also be a rectangle or a square. Figure 6-Figure 8As shown, the support bar 201 has a cavity inside, and the cavity forms an airway 206. The air suction port 205 is arranged on the upper surface of the support bar 201. The airway 206 is also connected to the vacuum pump 6 through the connecting pipe 7. The vacuum pump 6 can directly evacuate the air suction port 205, so that the closed roller blind 3 is adsorbed on the upper surface of the support bar 201. At this time, there may be a small leakage of cold air, because the leakage is very small, it can be ignored.

[0040] Of course, in order to further enhance the sealing effect, a rubber pad 202 is provided on the upper surface of the support strip 201. The rubber pad 202 is U-shaped, and the tops of the two parallel side surfaces of the U-shaped rubber pad are arc surfaces. The above-mentioned through hole 203 is arranged at the bottom of the U-shaped rubber pad 202. In order to facilitate ventilation and facilitate the installation of the rubber pad 202 on the support strip 201, a plurality of ventilation columns 10 are provided at the bottom of the rubber pad 202. The upper end of the ventilation column 10 is connected with the through hole 203, and the lower end is connected with the air duct 206 through the air suction port 205. The bottom end of the ventilation column 10 is provided with an inverted truncated cone-shaped fixing protrusion 12. The ventilation column 10 is inserted into the air suction port 205 to quickly connect the rubber pad 202 to the support strip. After being inserted into the support strip 201, the fixing protrusion 12 seals the air suction port 205 and the ventilation column 10 to prevent There is air leakage between the exhaust port 205 and the vent column 10; the vent column 10 can not only realize the connection function, but also communicate with the airway 206 to realize the exhaust of the U-shaped rubber pad 202. When the closed roller curtain 3 needs to be sealed, the vacuum pump 6 is pneumatically operated to exhaust air from the space enclosed by the closed roller curtain 3 and the U-shaped rubber pad 202, so that the closed roller curtain 3 is deformed and firmly pressed on the rubber pad 202. However, while the closed roller curtain 3 is deformed, due to the existence of vacuum negative pressure, the two parallel side surfaces of the U-shaped rubber pad 202 will also be deformed and move closer to the internal middle position. At this time, the contact area between the closed roller curtain and the rubber pad is not only increased, but also, because the two parallel side surfaces of the rubber pad move closer to the inside, the deformation of the closed roller curtain 3 is further increased, forming a fold of the closed roller curtain 3, thereby improving the sealing effect.

[0041] Of course, in other replaceable embodiments, the bottom of the rubber pad 202 can also be directly bonded to the upper surface of the support bar 201. At the same time, the through hole 203 is aligned with the exhaust port 205, and the vacuum pump 6 directly evacuates the cavity enclosed by the rubber pad 202 and the closed roller curtain 3 to achieve the sealing of the closed roller curtain 3.

[0042] Furthermore, in order to improve the supporting capacity of the bottom of the U-shaped rubber pad 202 and facilitate the fixation of the rubber pad 202 on the support bar 201, a plurality of spaced steel bars 11 are wrapped around the bottom of the rubber pad 202, and the steel bars 11 in the connecting surface of the ventilation column 10 and the rubber pad 202 are welded, and then the welded parts are wrapped with rubber, which ensures the sealing of the welded parts.

[0043] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0044] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A food preservation display cabinet, the food preservation display cabinet comprising a cabinet body, the cabinet body having a rear side panel, a front side panel, a left side panel and a right side panel, the rear side panel, the front side panel, the left side panel and the right side panel enclose a food storage cavity of the food preservation display cabinet, characterized in that: The cabinet body has an open side surface and an open top surface, and the open side surface and the open top surface are connected to form a display opening of the cabinet body; the fresh-keeping display cabinet also includes: A placing rack, the placing rack is arranged in the storage cavity of the cabinet, the placing rack is provided with multiple layers from top to bottom, the multi-layer placing rack is stepped from top to bottom, and the placing rack is provided with multiple placing slots for placing food; A winding roller, the winding roller is arranged on the rear side plate of the cabinet; A closed roller blind, one end of which is wound around the winding roller and the other end of which can be stretched to the front side plate on the front side of the cabinet to close the display opening; The cabinet is provided with a sealing device, which includes: Support bars, the support bars are respectively arranged at the top ends of the left side plate, the right side plate and the front side plate and the support bars are provided with a plurality of air extraction ports; An air duct, the air duct being arranged in the support bar and being communicated with the air extraction port; A vacuum pump is connected to the airway through a connecting pipe.

2. A food preservation display cabinet according to claim 1, characterized in that: The winding roller is arranged on the outer wall of the rear side plate, and the arrangement height of the winding roller is smaller than the top end height of the side plate.

3. A food preservation display cabinet according to claim 2, characterized in that: The top end surface of the rear side plate on which the winding roller is arranged on the cabinet is a curved surface.

4. A food preservation display cabinet according to claim 1, characterized in that: The support bar is U-shaped and comprises an upper bottom plate and a lower bottom plate. A V-shaped groove is arranged on the lower bottom plate of the support bar, and the air suction port is arranged on the surface of the V-shaped groove.

5. A food preservation display cabinet according to claim 4, characterized in that: A rubber pad is also provided on the surface of the V-shaped groove. The shape of the rubber pad is the same as that of the V-shaped groove. A through hole is provided on the rubber pad. The diameter of the through hole is smaller than the size of the air suction port, and the center of the through hole is in a straight line with the center of the air suction port.

6. A food preservation display cabinet according to claim 5, characterized in that: The surface of the V-shaped groove is provided with a mounting hole, the mounting hole is connected to the airway, and the bottom surfaces of the two ends of the rubber pad that are in contact with the V-shaped groove are provided with clamping protrusions that cooperate with the mounting holes, and the clamping protrusions can be inserted into the mounting holes to fix the rubber pad.

7. A food preservation display cabinet according to claim 1, characterized in that: The cross-section of the support bar is square, and there is a cavity inside the support bar, and the cavity forms the airway. The air suction port is arranged on the upper surface of the support bar, and a rubber pad is provided on the upper surface of the support bar. The rubber pad is U-shaped, and a through hole is provided at the bottom of the rubber pad. A plurality of hollow ventilation columns are provided at the bottom of the rubber pad, and the ventilation columns are installed at the air suction port, and the ventilation columns are respectively connected to the through holes and the airway.

8. A food preservation display cabinet according to claim 7, characterized in that: An inverted truncated cone-shaped fixing protrusion is provided at the bottom of the ventilation column.

9. A food preservation display cabinet according to claim 8, characterized in that: A connection surface of the rubber pad connected to the ventilation column is wrapped with a plurality of steel bars arranged at intervals.

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