Refrigeration and cold storage integrated thermostat and preparation method thereof

Abstract

This application relates to an integrated refrigeration and cold storage constant temperature box and its manufacturing method. The integrated refrigeration and cold storage constant temperature box includes: a shell, the shell comprising a separately connected upper and lower shell, each comprising an internal chamber and a cooling cavity disposed around the internal chamber; the upper and lower shells are arranged in close proximity to form the overall chamber of the integrated refrigeration and cold storage constant temperature box, and the cooling cavities are mutually isolated, forming the refrigeration cavity and cold storage cavity of the integrated refrigeration and cold storage constant temperature box. The integrated refrigeration and cold storage constant temperature box of this invention provides cooling capacity to the chamber through the refrigeration cavity and cold storage cavity, ensuring the required cooling capacity for refrigerated items in cold chain storage and extending the cold chain preservation time of refrigerated items. The manufacturing method of the integrated refrigeration and cold storage constant temperature box enables the processing of thin-walled constant temperature boxes, and the airtightness of the refrigeration cavity and cold storage cavity in the constant temperature box is ensured by laser welding.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and more specifically, to a refrigeration and cold storage integrated constant temperature box and its preparation method. Background Technology

[0002] With the gradual rise of the logistics industry, the requirements for cold chain storage and transportation of medicines are becoming increasingly stringent. Most existing constant temperature boxes can only refrigerate items using ice packs or other cold storage blocks, but do not maintain cold capacity through both refrigeration and cold storage at the same time. A constant temperature box that integrates refrigeration and cold storage is needed to meet the need to provide cold capacity for a long time.

[0003] Based on the functional requirements of the integrated refrigeration and cold storage constant temperature box refrigeration device, the device is required to simultaneously meet the characteristics of metal manufacturing, hollow U-shaped design, smooth and beautiful appearance, very thin wall thickness (i.e., about 0.4 to 0.6 mm), and good airtightness. Therefore, the production difficulty of realizing this device is extremely high.

[0004] Currently, the welding techniques available on the market have very high requirements for metal thickness. Materials thicker than 1mm can be joined using welding, but those thinner than 1mm pose a significant risk of burn-through. Therefore, welding is practically impossible with metals thinner than 1mm. Similarly, bending techniques are also difficult to use to manufacture this device, as the thin walls would greatly increase the risk of breakage. Summary of the Invention

[0005] The purpose of this application is to provide a refrigeration and cold storage integrated constant temperature box and its preparation method. This refrigeration and cold storage integrated constant temperature box can effectively guarantee the required cold amount in the storage cold chain by simultaneously carrying out refrigeration and cold storage.

[0006] The method for manufacturing an integrated refrigeration and cold storage constant temperature chamber improves the airtightness of the refrigeration chamber and the cold storage chamber, while also enabling the welding of thin-walled plates, thus breaking through the processing bottleneck of thin-walled plate refrigeration equipment.

[0007] To achieve the above objectives, in a first aspect, the present invention provides a refrigeration and cold storage integrated constant temperature box, comprising: a shell, the shell comprising an upper box and a lower box that are separately connected, the upper box and the lower box respectively comprising an internal chamber and a cooling cavity disposed outside the internal chamber;

[0008] The upper and lower boxes are arranged closely together to form the overall chamber of the integrated refrigeration and cold storage constant temperature box. The cooling chambers are isolated from each other and respectively form the refrigeration chamber and the cold storage chamber of the integrated refrigeration and cold storage constant temperature box.

[0009] In an optional embodiment, the upper box and the lower box have the same shape, both being U-shaped metal boxes;

[0010] The top of the upper box is an open structure, and the bottom of the lower box is connected to a base plate.

[0011] In an optional embodiment, both the upper box and the lower box include an outer wall panel and an inner wall panel that are stacked together. An upper frame panel and a lower frame panel are respectively connected between the outer wall panel and the inner wall panel. The lower frame panel of the upper box and the upper frame panel of the lower box are tightly fitted together.

[0012] In an optional embodiment, both the outer wall panel and the inner wall panel are square structures, each comprising four splicing flat panels, wherein an opening is provided between two of the splicing flat panels.

[0013] In an optional embodiment, a connecting baffle is provided at the opening, and the connecting baffle is connected to the outer wall panel and the inner wall panel respectively, for forming a closed chamber of the refrigeration chamber and the cold storage chamber.

[0014] In an optional embodiment, the upper and lower sides of the connecting baffle are respectively provided with through holes, and water inlet and water return are connected to the through holes.

[0015] Secondly, the present invention provides a method for preparing the integrated refrigeration and cold storage constant temperature box described in any of the foregoing embodiments, comprising the following steps:

[0016] Cut the board to obtain the box body material;

[0017] The box-type sheet metal is shaped to obtain the welded parts;

[0018] After laser welding, the parts are ground.

[0019] The airtightness of the refrigeration chamber and the cold storage chamber is tested, and the preparation is completed after the test is passed.

[0020] In an optional embodiment, the housing material comprises stainless steel plate with a thickness of 0.4-0.5 mm.

[0021] In an optional embodiment, the box panels are all welded together by laser welding.

[0022] In an optional embodiment, the laser welding current is 130-135A and the pulse width is 2.5-5mm. 2 / min, frequency of 15-22kHz, protective gas composition of 0.3-0.6 Vol%.

[0023] The integrated refrigeration and cold storage constant temperature box of this invention enables separate refrigeration and cold storage. By placing refrigerated items in the chamber of the constant temperature box, the refrigeration chamber and cold storage chamber on the outside of the chamber provide cooling capacity to the chamber, ensuring the required cooling capacity for refrigerated items in cold chain storage and extending the cold chain preservation time of refrigerated items.

[0024] The method for preparing the integrated refrigeration and cold storage constant temperature box in this invention enables the processing of thin-walled constant temperature boxes, and the airtightness of the refrigeration chamber and cold storage chamber in the constant temperature box is ensured by laser welding.

[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a structural schematic diagram of the integrated refrigeration and cold storage constant temperature box provided in this application;

[0028] Figure 2 A schematic diagram of the horizontally split structure of the integrated refrigeration and cold storage constant temperature box provided in this application.

[0029] icon:

[0030] 1-Upper box; 2-Lower box; 3-Outer wall panel; 4-Inner wall panel; 5-Upper frame panel; 6-Lower frame panel; 7-Splicing plate; 8-Connecting baffle; 9-Engineering step; 10-Baffle plate; 11-Through hole; 12-Water inlet; 13-Water return nozzle; 14-Top corner plate; 15-Bottom plate. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] See Figures 1-2 The present invention provides a refrigeration and cold storage integrated constant temperature box, comprising: a shell, the shell comprising an upper box 1 and a lower box 2 connected separately, the upper box 1 and the lower box 2 respectively comprising an internal chamber and a cooling cavity disposed outside the internal box; the upper box 1 and the lower box 2 are arranged closely together to form the overall chamber of the refrigeration and cold storage integrated constant temperature box, and the cooling cavities are isolated from each other to form the refrigeration cavity and the cold storage cavity of the refrigeration and cold storage integrated constant temperature box.

[0035] The integrated refrigeration and cold storage constant temperature box of this invention is mainly used in refrigeration equipment to extend the storage time of refrigerated items, especially medicines that require sufficient cold energy, by simultaneously refrigerating and storing cold energy, thereby meeting the needs of cold chain transportation and storage of refrigerated medicines.

[0036] The upper chamber 1 and lower chamber 2, which are connected separately, can form a refrigerated compartment inside the constant temperature box. Refrigerated items are placed in the refrigerated compartment and can be kept cold through the cooling chamber on the outside of the refrigerated compartment.

[0037] The close arrangement of the upper and lower chambers allows the cooling chamber on the constant temperature chamber to effectively surround the inner refrigerated compartment, further ensuring the cold preservation effect in the refrigerated compartment.

[0038] By isolating the upper and lower chambers with hollow structures, the refrigeration chamber and cold storage chamber of the constant temperature chamber can be formed separately, effectively achieving simultaneous refrigeration and cold storage, and ensuring a sustainable supply of cooling capacity. During use, refrigerant and cold medium are introduced into the refrigeration chamber and cold storage chamber respectively, and the cooling capacity of the refrigerant and cold medium is transferred to the refrigeration compartment through heat conduction.

[0039] To prevent the loss of cold energy due to gaps between the separate upper chamber 1 and lower chamber 2, the two chambers need to be designed with the same shape, preferably metal boxes with a U-shaped cross-section for both the upper and lower chambers. Furthermore, by arranging the two chambers closely together, a cold energy transfer channel can be established in the thermostat, ensuring the overall cooling effect of the thermostat on refrigerated items.

[0040] By introducing refrigerant and cooling medium into the hollow cavity inside the U-shaped box, the cold energy is transferred through heat conduction, and an external barrier is formed to protect the refrigerated compartment, ensuring the cooling temperature of the inner refrigerated compartment.

[0041] In this embodiment, the upper chamber 1 and the lower chamber 2 are arranged close together, and their internal spaces together constitute the refrigerated compartment inside the constant temperature box. To facilitate the retrieval and placement of refrigerated items, the top of the constant temperature box is an open structure. Specifically, the top of the upper chamber 1 is set as an open structure, and a bottom plate 15 is connected to the bottom of the lower chamber 2. The internal spaces of the upper chamber 1 and the lower chamber 2 are transparent, ensuring the internal refrigeration space of the constant temperature box and improving ease of use while meeting storage space requirements.

[0042] In order to form a refrigeration chamber and a cold storage chamber respectively, the upper box 1 and the lower box 2 each include an outer wall panel 3 and an inner wall panel 4 stacked together. An upper frame plate 5 and a lower frame plate 6 are respectively connected between the outer wall panel 3 and the inner wall panel 4. The upper frame plate 5, the lower frame plate 6 and the wall panels respectively form the refrigeration chamber and the cold storage chamber of the upper box 1 and the lower box 2.

[0043] The upper chamber 1 and the lower chamber 2 are tightly attached to each other using a flat frame plate. The lower frame plate 6 of the upper chamber 1 and the upper frame plate 5 of the lower chamber 2 are tightly attached to each other, which increases the contact area between the two chambers and effectively forms a channel for the transmission of cold energy.

[0044] Based on the square structure of the incubator, both the outer wall panels 3 and inner wall panels 4 of the two chambers are cubic structures. Since the metal plates of the incubator are all made of thin-walled stainless steel plates with a thickness of less than 1mm, bending of the plates is not possible during manufacturing. Thin-walled stainless steel plates have low toughness and are prone to brittle fracture during bending. In this embodiment, the outer wall panel 3 and inner wall panel 4 each include four spliced ​​flat plates 7. Compared to bending the thin-walled plates, the chamber wall panels assembled from the spliced ​​flat plates 7 enhance the reliability of the manufacturing process and reduce the breakage rate. Simultaneously, the assembled thin-walled stainless steel plates reduce the size of the heat transfer system, thereby enhancing the overall refrigeration effect of the incubator.

[0045] In the cooling chambers of the upper casing 1 and the lower casing 2, externally supplied refrigerant and cooling medium are respectively introduced. To facilitate the installation of the interface, an opening is provided between the two splicing flat plates 7, and the openings of the upper casing 1 and the lower casing 2 are located in the same position. At the same time, a connecting baffle 8 is provided at the opening, and an engineering step 9 is specifically provided on the connecting baffle 8. The side of the engineering step 9 is connected to a sealing baffle 10. The two sealing baffles 10 are respectively connected between the outer wall panel 3 and the inner wall panel 4 to seal the opening of the cooling chamber, so as to form a sealed chamber for the refrigeration chamber and the cold storage chamber. A top corner plate 14 is connected to the upper frame plate 5 at the top of the upper casing 1, and a protrusion matching the shape of the opening is provided on the bottom plate 15 of the lower casing 2, so that the cooling chambers of the two casings are independently sealed.

[0046] Through holes 11 are respectively provided in the thickness direction of the two sealing baffles 10. The through holes 11 are respectively located on the upper and lower sides of the sealing baffles 10 to connect the water inlet 12 and the water return 13, so that refrigerant and cold medium can be introduced through the pipelines connected to the water inlet 12 and the water return 13.

[0047] The integrated refrigeration and cold storage constant temperature box of the present invention can realize refrigeration and cold storage at the same time. By closely assembling the upper box 1 and the lower box 2, the transmission of cold energy in the constant temperature box is effectively improved, ensuring the overall refrigeration effect of the constant temperature box.

[0048] In addition, the upper casing 1 and the lower casing 2 are both made of stainless steel thin-walled plates with a thickness of less than 1mm, which can greatly reduce the heat transfer coefficient and improve the smoothness of cold energy transmission.

[0049] This invention also provides a method for preparing the above-mentioned integrated refrigeration and cold storage constant temperature chamber, which mainly includes the following steps:

[0050] The water tap is processed, including turning, bending, inspection, and surface treatment. Specifically, 304 stainless steel pipe is used for turning. After turning, it enters the bending process. The turned stainless steel pipe is bent according to the shape and size required by the drawing. The water tap in this invention includes two shapes, one is L-shaped and the other is Z-shaped. The turned stainless steel pipe is bent. The quality of the bent product is inspected. After passing the quality test, it enters the surface treatment process. The qualified water tap is passivated. After the treatment is completed, it is ready for welding.

[0051] Simultaneously with the faucet processing, the cabinet sheet metal is also processed, including: cutting 0.4-0.5mm thick 304 stainless steel thin-walled sheets into the required dimensions for cabinet welding using a cutting device, followed by grinding and deburring; shaping the cut sheets, inspecting the shaped sheets, and awaiting welding after passing inspection. It should be noted that the sheets in this invention are all thin-walled stainless steel plates, cut flat without bending.

[0052] The processed water faucet and the 304 stainless steel sheet required for the cut cabinet are placed on the fixture. Laser welding is used to weld the water faucet and the connection between different cabinet sheets. By laser welding all the different cabinet sheets, the sealing effect of the cooling chamber and cold storage chamber on the cabinet can be guaranteed, which is beneficial to the reliability and stability of later use.

[0053] After welding, the constant temperature chamber undergoes surface polishing to ensure a defect-free product. Following polishing, a tightness test is performed on the chamber; once the test results are satisfactory, the fabrication of the constant temperature chamber is complete.

[0054] If the test results are unqualified, scrapping or repair processing needs to be selected according to the specific situation. For scrapping, the manufacturing process needs to be restarted until the water tank is completed. For repair processing, the manufacturing process and airtightness test need to be restarted after the repair is completed until the water tank is completed.

[0055] In this invention, the welding of the cabinet panels and the water taps onto the cabinet is performed using laser welding. The laser welding process parameters include: current of 130-135A and pulse width of 2.5-5mm. 2 / min, frequency of 15-22kHz, protective gas composition of 0.3-0.6 Vol%.

[0056] Based on the actual thickness of the enclosure material and the process requirements, the above parameters for laser welding can be adjusted in real time during the welding process to meet the actual requirements of different processing and production.

[0057] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A constant temperature chamber integrating refrigeration and cold storage, characterized in that, Includes: housing, The housing includes a split upper box and a lower box, the upper box and the lower box respectively including an internal chamber and a cooling cavity disposed outside the internal chamber; The upper chamber and the lower chamber are arranged close together, and the cooling chambers are isolated from each other to form the refrigeration chamber and the cold storage chamber of the integrated refrigeration and cold storage constant temperature box. The upper box and the lower box have the same shape, both being U-shaped metal boxes; The top of the upper box is an open structure, and the bottom of the lower box is connected to a base plate; Both the upper box and the lower box include an outer wall panel and an inner wall panel that are stacked together. An upper frame panel and a lower frame panel are respectively connected between the outer wall panel and the inner wall panel. The lower frame panel of the upper box and the upper frame panel of the lower box are closely attached to each other. Both the outer wall panel and the inner wall panel are square structures, each comprising four spliced ​​flat panels, wherein an opening is provided between two of the spliced ​​flat panels; A connecting baffle is provided at the opening, and the connecting baffle is connected to the outer wall panel and the inner wall panel respectively, to form a closed chamber for the refrigeration chamber and the cold storage chamber; The connecting baffle is provided with through holes on the upper and lower sides respectively, and water inlet and water outlet are connected to the through holes.

2. A method for preparing the integrated refrigeration and cold storage constant temperature box as described in claim 1, characterized in that, Includes the following steps: Cut the board to obtain the box body material; The box-type sheet metal is shaped to obtain the welded parts; After laser welding, the parts are ground. The airtightness of the refrigeration chamber and the cold storage chamber is tested, and the preparation is completed after the test is passed.

3. The preparation method according to claim 2, characterized in that, The enclosure material includes stainless steel plates with a thickness of 0.4-0.5mm.

4. The preparation method according to claim 2, characterized in that, The box panels are all welded together using laser welding.

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