Refrigerating box and manufacturing method thereof

Abstract

The invention belongs to the technical field of refrigeration equipment, and particularly relates to a refrigeration box and a manufacturing method thereof.The refrigeration box comprises a box body, a box cover and a refrigeration device, the box cover is rotationally arranged at an opening of the box body, the refrigeration device is installed on one side of the box body and can provide cold air for the interior of the box body, and the box body comprises a composite glass steel plate, a box body frame, a foaming layer and an inner container; the composite glass steel plate and the inner container are connected through the box body frame, the box body frame comprises door frame ridge rods, door frame ridge rod connecting pieces, ridge rods and ridge rod connecting pieces, a foaming layer containing space is formed between the composite glass steel plate and the inner container, and the foaming layer is located in the foaming layer containing space. The invention aims to provide the refrigerating box which is reasonable in structure, formed by one-time foaming, free of additional splicing through rivets, good in overall consistency and good in refrigerating effect, and the manufacturing method of the refrigerating box.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigeration equipment, and in particular relates to a refrigeration box and a manufacturing method thereof. Background Art

[0002] Fresh and frozen foods need to be frozen or refrigerated during transportation. Domestic and foreign countries generally use large and medium-sized trucks to be converted into refrigerated vehicles or large refrigerated trailers for medium and long-distance cold chain transportation. Due to the large size of these vehicles and the restrictions on trucks in some cities, cold chain distribution in the city is very inconvenient. The industry calls it the "last mile" cold chain distribution problem. Some areas use a quilt + ice delivery method, but the temperature is difficult to control, causing problems such as food spoilage; some areas use commercial vehicles converted into small refrigerated trucks for distribution, but the vehicle modification process is relatively complicated, and the compartment needs to be insulated and a small refrigeration unit needs to be installed. Not only is the cost high, but the vehicle has a single purpose after the modification, and the goods are difficult to stack, which is difficult for users to accept;

[0003] In response to this problem, a kind of refrigerator box has appeared on the market. Most of the outer panels of the refrigerator boxes on the market are made of vacuum insulation panels. As a new type of thermal insulation material with excellent thermal insulation properties, the most common application method is to prefabricate the vacuum insulation panels and polyurethane into composite sandwich insulation panels, and then splice the composite panels into a box body. The advantages of this process are simple process, customization of any size, and low preparation cost, but there are also many disadvantages. One is that the integrity of the box body is not good, and the splicing gaps are difficult to handle, because the bonding process is mostly used between the boards, and there are certain defects in environmental protection and load-bearing properties; the second is that the sealing is not good. In addition to the structural panel seams, the structural limitations of the box cover and the box body also make it difficult to ensure the sealing effect, and it is difficult to give full play to the advantages of the vacuum insulation panel. Summary of the invention

[0004] The object of the present invention is to provide a refrigerator with reasonable structure, one-time foaming, no need for additional splicing by rivets, good overall consistency and good refrigeration effect, and a manufacturing method thereof.

[0005] The object of the present invention is achieved in that:

[0006] A cold storage box comprises a box body, a box cover and a refrigeration device, wherein the box cover is rotatably arranged at the opening of the box body, the refrigeration device is installed at one side of the box body and can provide cold air inside the box body, the box body comprises a composite glass fiber reinforced plastic plate, a box body frame, a foaming layer and an inner liner, the composite glass fiber reinforced plastic plate and the inner liner are interconnected through the box body frame, the box body frame comprises a door frame corrugated rod, a door frame corrugated rod connecting piece, corrugated rods and corrugated rod connecting pieces, a foaming layer accommodating space is arranged between the composite glass fiber reinforced plastic plate and the inner liner, the foaming layer is located in the foaming layer accommodating space, and the composite glass fiber reinforced plastic plate, the box body frame, the foaming layer and the inner liner are connected together through the foaming layer.

[0007] In the above-mentioned cold storage box and its manufacturing method, a clip strip connected to the foam layer is arranged on the inner side of the box body frame, the door frame corrugated rod and the door frame corrugated rod connecting piece are connected to each other to form a door frame, the corrugated rod is provided with two connecting grooves 1 for connecting to the insulation board, the two connecting grooves 1 are arranged perpendicular to each other, the clip strip is located between the two connecting grooves 1, the corrugated rod connecting piece is provided with a clip slot 1 for facilitating the insertion of the clip strip, the corrugated rod connecting piece is connected to the corrugated rod through the cooperation between the clip strip and the clip slot 1, and the door frame corrugated rod connecting piece is provided with a clip slot 2 for facilitating the insertion of the clip strip.

[0008] In the above-mentioned refrigerator, the clamping strip is a T-shaped structure.

[0009] In the above-mentioned refrigerator, an external connection piece is arranged on the corrugated rod connecting piece, the external connection piece extends out of the corrugated rod connecting piece and is connected to the corrugated rod, and the first card slot is located on the external connection piece.

[0010] In the above-mentioned refrigerator, two symmetrically arranged L-shaped card plates are formed by extending inwardly from both sides of the card slot, and the card strip is in contact with the two L-shaped card plates.

[0011] In the above-mentioned refrigerator, the door frame bar is provided with a second connection groove for connecting the heat insulation board and a third connection groove for connecting the inner tank, and the second connection groove and the third connection groove are arranged in parallel.

[0012] In the above-mentioned refrigerator, a guiding inclined plate is provided on the inner side wall of the connecting groove three.

[0013] In the above-mentioned refrigerator, the inner liner is a metal liner or a blister liner.

[0014] In the above-mentioned refrigerator, a lock is provided between the box body and the box cover, and a handle is provided on the box body.

[0015] A method for manufacturing a refrigerator comprises the following steps:

[0016] Step 1: Arrange the door frame bar and the door frame bar connector on the core side of the mold;

[0017] Step 2: Then connect the inner liner with the door frame bar, and then connect the four composite glass fiber reinforced plastic plates and the four bar with the door frame bar and the door frame bar connector, and the composite glass fiber reinforced plastic plates and the bar are located on the periphery of the core to obtain a semi-finished product A;

[0018] Step 3: Connect the composite glass fiber reinforced plastic plate, four corrugated rod connectors and four corrugated rods to obtain a semi-finished product B;

[0019] Step 4: Connect the semi-finished product B and the semi-finished product A to obtain the semi-finished product C;

[0020] Step 5: The high-pressure foaming machine injects the foaming raw material into the accommodating space of the foaming layer of the semi-finished product C, covers the cavity of the mold, and foams. The foaming reaction time is 15-45 minutes to obtain the semi-finished product D;

[0021] Step 6: After taking out the semi-finished product D from the foaming mold, put it in a constant temperature environment for 8-24 hours to obtain a semi-finished product E;

[0022] Step 7: Connect the box cover to the semi-finished product E through hinges, and finally install the refrigeration device on the semi-finished product E to obtain the finished product.

[0023] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0024] The present invention assembles a plurality of components together and then puts them into a foaming mold for foaming and forming at one time. There is no need to use rivets or bolts to splice the frame, the composite fiberglass and the inner liner. The whole is connected to the foaming layer through the card strip, which reduces the overall seams, ensures the integrity, and improves the sealing and heat preservation effects. The composite fiberglass can improve the strength and toughness of the outer side of the box body, and will not cause dents or deformation when encountering impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a process flow chart of the present invention.

[0026] Figure 2 It is a structural diagram of the present invention.

[0027] Figure 3 It is a cross-sectional view of a refrigeration device according to the present invention.

[0028] Figure 4 It is an exploded view of the box frame of the present invention.

[0029] Figure 5 It is an enlarged view of point A of the present invention.

[0030] Figure 6 It is a structural schematic diagram of the door frame bar of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the corrugated rod connection of the present invention.

[0032] Figure 8 It is a partial structural schematic diagram of a door frame bar and a door frame bar connecting piece of the present invention.

[0033] 1-box body; 2-box cover; 3-refrigeration device 11-composite glass fiber reinforced plastic plate; 12-box frame; 14-liner; 121-door frame corrugated rod; 122-door frame corrugated rod connecting piece; 123-corrugated rod; 124-corrugated rod connecting piece; 125-clip strip; 1211-connecting groove two; 1212-connecting groove three; 1213-guide inclined plate; 1231-connecting groove one; 1241-clip groove one; 1242-clip groove two; 1243-L-shaped clip plate; 1244-external parts. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to specific embodiments of the present invention:

[0035] like Figure 1-Figure 8 As shown: A refrigerator, including a box body 1, a box cover 2 and a refrigeration device 3, the box cover 2 is rotatably set at the opening of the box body 1, the refrigeration device is installed on one side of the box body 1, and can provide cold air to the box body 1, the box body 1 includes a composite glass fiber reinforced plastic plate 11, a box frame 12, a foaming layer and an inner liner 14, the composite glass fiber reinforced plastic plate 11 and the inner liner 14 are interconnected through the box frame 12, the box frame 12 includes a door frame corrugated rod 121, a door frame corrugated rod connecting piece 122, a corrugated rod 123 and a corrugated rod connecting piece 124, a foaming layer accommodating space is provided between the composite glass fiber reinforced plastic plate 11 and the inner liner 14, the foaming layer is located in the foaming layer accommodating space, and the composite glass fiber reinforced plastic plate 11, the box frame 12, the foaming layer and the inner liner 14 are connected together through the foaming layer 13.

[0036] In the above-mentioned refrigerator, a clip strip 125 connected to the foam layer is provided on the inner side of the box frame 12, the door frame corrugated bar 121 and the door frame corrugated bar connector 122 are connected to each other to form a door frame, the corrugated bar 123 is provided with two connecting grooves 1231 for connecting the heat insulation board, the two connecting grooves 1231 are arranged perpendicular to each other, the clip strip 125 is located between the two connecting grooves 1231, the corrugated bar connector 124 is provided with a slot 1241 for facilitating the insertion of the clip strip 125, the corrugated bar connector 124 is connected to the corrugated bar 123 through the cooperation between the clip strip 125 and the slot 1241, and the door frame corrugated bar connector 122 is provided with a clip strip 125 and a slot 1241. A second card slot 1242 is provided for facilitating the insertion of the card strip 125. The present invention forms a box frame by interconnecting door frame corrugated bars, door frame corrugated bar connectors, corrugated bars and corrugated bar connectors. The heat insulation board and the liner are connected to the box frame. After the connection, a foaming agent is filled to form a complete insulation box body. The expanded foaming agent will wrap the T-shaped card connector and further fix the box frame to the heat insulation board and the container shell. There is no need to reinforce with rivets or bolts. The overall consistency is good, the sealing is good, and the composite fiberglass material has good deformation resistance, impact resistance, no deformation, not easy to crack, high strength, good thermal insulation performance, and light weight.

[0037] In the above-mentioned refrigerator, the clamping strip 125 is a T-shaped structure. Specifically, this is to ensure that the corrugated bar connector and the corrugated bar can be stably connected to each other and play an anti-detachment role.

[0038] In the above-mentioned refrigerator, an external component 1244 is provided on the corrugated rod connecting member 124, and the external component 1244 extends out of the corrugated rod connecting member 124 and is connected to the corrugated rod 123. The card slot 1241 is located on the external component 1244, and the two sides of the card slot 1241 extend inward to form two symmetrically arranged L-shaped card plates 1243. The card strip 125 is in contact with the two L-shaped card plates 1243. The L-shaped card plate is used to connect with the foaming agent to play a fixing role and improve the connection stability. The L-shaped card plate is bent outward and is used in conjunction with the card strip. The first is to prevent the card strip from detaching, and the second is to connect with the foaming agent for further fixing.

[0039] In the above-mentioned refrigerator, the cross-section of the external connection member 1244 is an L-shaped structure, specifically, this is to facilitate the connection with the corrugated rod.

[0040] In the above-mentioned refrigerator, the door frame bar 121 is provided with a second connecting groove 1211 for connecting the insulation board 11 and a third connecting groove 1212 for connecting the inner liner. The second connecting groove 1211 and the third connecting groove 1212 are arranged in parallel. Specifically, this is to facilitate the installation of the outer panel and the inner liner of the insulation box.

[0041] In the above-mentioned refrigerator, a guide inclined plate 1213 is provided on the inner side wall of the connection groove three 1212. Specifically, this is to facilitate the insertion of the container shell into the connection groove three, and the guide inclined plate is to cooperate with the foaming layer to play a fixing role.

[0042] In the above-mentioned refrigerator, the inner liner 14 is a metal inner liner or a blister inner liner. The metal inner liner can be made of aluminum alloy or stainless steel. In the present invention, stainless steel is preferred.

[0043] In the above-mentioned refrigerator, a lock is provided between the box body 1 and the box cover 2, which can play a locking role, and a handle is provided on the box body 1 to facilitate transportation.

[0044] A method for manufacturing a refrigerator comprises the following steps:

[0045] Step 1: Arrange the door frame bar and the door frame bar connector on the core side of the mold;

[0046] Step 2: Then connect the inner liner with the door frame bar, and then connect the four composite glass fiber reinforced plastic plates and the four bar with the door frame bar and the door frame bar connector, and the composite glass fiber reinforced plastic plates and the bar are located on the periphery of the core to obtain a semi-finished product A;

[0047] Step 3: Connect the composite glass fiber reinforced plastic plate, four corrugated rod connectors and four corrugated rods to obtain a semi-finished product B;

[0048] Step 4: Connect the semi-finished product B and the semi-finished product A to obtain the semi-finished product C;

[0049] Step 5: The high-pressure foaming machine injects the foaming raw material into the accommodating space of the foaming layer of the semi-finished product C, covers the cavity of the mold, and foams. The foaming reaction time is 15-45 minutes to obtain the semi-finished product D;

[0050] Step 6: After taking out the semi-finished product D from the foaming mold, put it in a constant temperature environment for 8-24 hours to obtain a semi-finished product E;

[0051] Step 7: Connect the box cover to the semi-finished product E through hinges, and finally install the refrigeration device on the semi-finished product E to obtain the finished product.

[0052] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigerator, comprising a box body (1), a box cover (2) and a refrigeration device (3), characterized in that: The box cover (2) is rotatably arranged at the opening of the box body (1); the refrigeration device (3) is installed on one side of the box body (1) and can provide cold air to the box body (1); the box body (1) comprises a composite glass fiber reinforced plastic plate (11), a box body frame (12), a foaming layer (13) and an inner liner (14); the composite glass fiber reinforced plastic plate (11) and the inner liner (14) are connected to each other through the box body frame (12); the box body frame (12) comprises a door frame corrugated rod (121), a door frame corrugated rod connecting piece (122), a corrugated rod (123) and a corrugated rod connecting piece (124); a foaming layer accommodating space is arranged between the composite glass fiber reinforced plastic plate (11) and the inner liner (14); the foaming layer (13) is located in the foaming layer accommodating space; and the composite glass fiber reinforced plastic plate (11), the box body frame (12) and the inner liner (14) are connected together through the foaming layer (13).

2. The refrigerator according to claim 1, characterized in that: A clip strip (125) connected to the foam layer (13) is arranged on the inner side of the box frame (12); the door frame corrugated rod (121) and the door frame corrugated rod connecting member (122) are connected to each other to form a door frame; the corrugated rod (123) is provided with two connecting grooves (1231) for connecting to the composite glass fiber reinforced plastic plate; the two connecting grooves (1231) are arranged perpendicular to each other; the clip strip (125) is located between the two connecting grooves (1231); the corrugated rod connecting member (124) is provided with a clip slot (1241) for facilitating the insertion of the clip strip (125); the corrugated rod connecting member (124) is connected to the corrugated rod (123) through the cooperation between the clip strip (125) and the clip slot (1241); and the door frame corrugated rod connecting member (122) is provided with a clip slot (1242) for facilitating the insertion of the clip strip (125).

3. The refrigerator according to claim 2, characterized in that: The clamping strip (125) is a T-shaped structure.

4. The refrigerator according to claim 1, 2 or 3, characterized in that: The corrugated rod connecting member (124) is provided with an external connecting member (1244), the external connecting member (1244) extends out of the corrugated rod connecting member (124) and is connected to the corrugated rod (123), and the first clamping slot (1241) is located on the external connecting member (1244).

5. The refrigerator according to claim 4, characterized in that: Two symmetrically arranged L-shaped card plates (1243) are formed by extending inwards from both sides of the card slot 1 (1241), and the card strip (125) is in contact with the two L-shaped card plates (1243).

6. The refrigerator according to claim 4, characterized in that: The door frame bar (121) is provided with a second connection groove (1211) for connecting the composite glass fiber reinforced plastic plate (11) and a third connection groove (1212) for connecting the inner liner, and the second connection groove (1211) and the third connection groove (1212) are arranged in parallel.

7. The refrigerator according to claim 6, characterized in that: A guide inclined plate (1213) is provided on the inner side wall of the connection groove three (1212).

8. The refrigerator according to claim 4, characterized in that: The inner liner (14) is a metal inner liner or a blister inner liner.

9. The refrigerator according to claim 1, characterized in that: A lock buckle is provided between the box body (1) and the box cover (2), and a handle is provided on the box body (1).

10. A method for manufacturing a refrigerator, comprising the refrigerator according to claims 1 to 9, characterized in that: The following steps are involved: Step 1: Arrange the door frame bar and the door frame bar connector on the core side of the mold; Step 2: Then connect the inner liner with the door frame bar, and then connect the four composite glass fiber reinforced plastic plates and the four bar with the door frame bar and the door frame bar connector, and the composite glass fiber reinforced plastic plates and the bar are located on the periphery of the core to obtain a semi-finished product A; Step 3: Connect the composite glass fiber reinforced plastic plate, four corrugated rod connectors and four corrugated rods to obtain a semi-finished product B; Step 4: Connect the semi-finished product B and the semi-finished product A to obtain the semi-finished product C; Step 5: The high-pressure foaming machine injects the foaming raw material into the accommodating space of the foaming layer of the semi-finished product C, covers the cavity of the mold, and foams. The foaming reaction time is 15-45 minutes to obtain the semi-finished product D; Step 6: After taking out the semi-finished product D from the foaming mold, put it in a constant temperature environment for 8-24 hours to obtain a semi-finished product E; Step 7: Connect the box cover to the semi-finished product E through hinges, and finally install the refrigeration device on the semi-finished product E to obtain the finished product.

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