Rapid heat exchange cold storage box

Abstract

The utility model relates to a rapid heat exchange cold storage box. The rapid heat exchange cold storage box comprises a cold storage box body and a resistance reduction protruding row, the cold storage box body comprises a windward plate and a cold storage cavity shell connected with the windward plate, the windward plate and the cold storage cavity shell form a storage cavity, and the storage cavity is used for storing phase change materials. The resistance reducing protrusion row is arranged on the outer side of the cold storage cavity shell and comprises a plurality of fusiform protrusions arranged at intervals, and the tip ends of the fusiform protrusions face the windward plate. When airflow of an air cooler or airflow in a cold storage flows through the outside of the cold storage cavity shell, the fusiform protrusion structures on the outer side of the cold storage cavity shell can effectively control flowing of boundary layers near the surface of the cold storage cavity shell, delay separation of the boundary layers and change the flowing direction and speed distribution of the air, so that the air flows through the surface more smoothly, and the air quality is improved. Therefore, turbulent flow energy dissipation and resistance brought by the turbulent flow energy dissipation are reduced while fluid heat transfer is enhanced, and good comprehensive heat transfer performance is achieved.

Description

Technical Field

[0001] The present application relates to the field of phase change cold storage technology, and in particular to a rapid heat exchange cold storage box. Background Art

[0002] To comply with the peak-valley electricity pricing policy proposed by relevant national authorities, cold storage cold storage systems charge the cold storage tank during the nighttime off-peak electricity hours. This charging is achieved by exchanging heat with the low-temperature air at the outlet of the air cooler. During the daytime peak electricity hours, the cold storage system cools down by releasing the cold storage tank's phase change material and exchanging heat with the hot air inside the cold storage tank. However, during the charging and releasing process, the convection heat transfer coefficient between the cold storage tank and the air from the air cooler and the cold storage tank is low, resulting in little heat exchange and making it difficult to maintain the cold storage temperature. Therefore, it is necessary to enhance the heat transfer process in the cold storage tank.

[0003] To address this issue, cold storage tanks currently employ surface roughness or corrugation to alter the fluid (or air) flow pattern, increasing turbulence and thereby improving the fluid's heat transfer coefficient. While these methods improve the fluid's heat transfer coefficient, the surface disturbance creates vortices, increasing flow resistance and pressure drop, making it difficult to achieve ideal heat transfer. Utility Model Content

[0004] Based on this, it is necessary to provide a fast heat exchange cold storage box to address the current problem of difficulty in coordinating fluid heat transfer and flow resistance.

[0005] A rapid heat exchange cold storage box, comprising a cold storage box body and a row of drag-reducing protrusions, wherein:

[0006] The cold storage box includes a windward plate and a cold storage cavity shell connected to the windward plate, wherein the windward plate and the cold storage cavity shell form a storage cavity, and the storage cavity is used to store phase change material;

[0007] The resistance-reducing protrusion row is arranged on the outer side of the cold storage cavity shell, and the resistance-reducing protrusion row includes a plurality of spindle-shaped protrusions spaced apart from each other, with the tips of the spindle-shaped protrusions facing the windward plate.

[0008] In one embodiment, the windward plate is an arc-shaped plate with an arc-shaped outer surface.

[0009] In one embodiment, the cold storage cavity shell includes a first cold storage side plate and a second cold storage side plate connected to both sides of the open end of the arc plate, and the first cold storage side plate and the second cold storage side plate are both provided with the resistance reducing protrusion row.

[0010] In one embodiment, at least two rows of the resistance-reducing protrusions are provided on the first cold storage side plate, and the spindle-shaped protrusions in two adjacent rows of the resistance-reducing protrusions are staggered.

[0011] In one embodiment, at least two rows of the resistance-reducing protrusions are provided on the second cold storage side plate, and the spindle-shaped protrusions in two adjacent rows of the resistance-reducing protrusions are staggered.

[0012] In one embodiment, the cold storage cavity shell further includes a third cold storage side plate and a fourth cold storage side plate connected to the other two sides of the arc plate, and a suspension groove is further provided on the cold storage cavity shell, and the suspension groove is open to the third cold storage side plate and / or the fourth cold storage side plate.

[0013] In one embodiment, the opening depth of the suspension groove occupies 55%-60% of the width dimensions of the first cold storage side plate and the second cold storage side plate.

[0014] In one embodiment, there are multiple suspension grooves, and the multiple suspension grooves are arranged at intervals.

[0015] In one embodiment, the rapid heat exchange cold storage box further includes a reinforcing rib, which is arranged inside the cold storage cavity shell and connects the first cold storage side plate and the second cold storage side plate.

[0016] In one embodiment, a first groove and a second groove are respectively formed in the first cold storage side plate and the second cold storage side plate on the outside facing the reinforcing rib.

[0017] The above-mentioned rapid heat exchange cold storage box, by arranging a resistance-reducing protrusion row including a plurality of spindle-shaped protrusions arranged on the outside of the cold storage cavity shell, the tips of the spindle-shaped protrusions face the windward plate, so that when the airflow of the air cooler or the airflow in the cold storage flows through the outside of the cold storage cavity shell, the spindle-shaped protrusion structure on the outside of the cold storage cavity shell can effectively control the boundary layer flow near its surface, delay the separation of the boundary layer, change the direction and speed distribution of the air flow, and make the air flow more smoothly when passing through the surface, thereby enhancing the fluid heat transfer while reducing the turbulent energy dissipation and the resistance brought by it, and having good comprehensive heat transfer performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the rapid heat exchange cold storage box provided in this application.

[0019] Figure 2 A cross-sectional view of the rapid heat exchange cold storage box provided in this application.

[0020] Figure 3 This is a structural schematic diagram of the rapid heat exchange cold storage box from another angle provided in this application.

[0021] in:

[0022] 10. Rapid heat exchange cold storage box;

[0023] 100, cold storage box; 110, windward plate; 120, cold storage cavity shell; 121, first cold storage side plate; 1211, first groove; 122, second cold storage side plate; 1221, second groove; 123, third cold storage side plate; 124, fourth cold storage side plate; 125, suspension groove; 126, mounting plate; 1261, recessed portion; 1262, raised portion; 130, storage cavity; 140, filling nozzle; 150, sealing cover;

[0024] 200, drag-reducing protrusion row; 210, spindle-shaped protrusion; 211, panel; 212, side wall;

[0025] 300. Reinforcement ribs. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0029] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0032] See Figure 1 and Figure 2 As shown, Figure 1 The schematic diagram of the structure of the rapid heat exchange cold storage box 10 in one embodiment of the present application is shown. Figure 2 A cross-sectional view of a rapid heat exchange cold storage tank 10 according to one embodiment of the present application is shown. The rapid heat exchange cold storage tank 10 provided in one embodiment of the present application includes a cold storage tank body 100 and a row of drag-reducing protrusions 200. The cold storage tank body 100 includes a windward plate 110 and a cold storage cavity shell 120 connected to the windward plate 110. The windward plate 110 and the cold storage cavity shell 120 form a storage cavity 130 for storing phase change material.

[0033] The drag-reducing protrusion row 200 is disposed on the outside of the cold storage cavity shell 120. The drag-reducing protrusion row 200 includes a plurality of spaced-apart spindle-shaped protrusions 210. In a specific configuration, the plurality of spindle-shaped protrusions 210 are arranged along the length of the cold storage cavity shell 120, with the tips of the spindle-shaped protrusions 210 facing the windward plate 110. In a specific configuration, the spindle-shaped protrusions 210 include a spindle-shaped panel 211 and a side wall 212 disposed along the contour of the panel 211. The panel 211 and the side wall 212 are connected to form a cavity structure with one end open. The open end of the spindle-shaped protrusion 210 is disposed in the cold storage cavity shell 120 and communicates with the storage cavity 130. It should be noted that the spindle-shaped panel 211 has a tip, two connecting segments, and an arc-shaped end opposite the tip. The two connecting segments extend along the two ends of the arc-shaped end toward the tip, gradually narrowing and converging to the tip. The above-mentioned rapid heat exchange cold storage box 10, by providing a resistance-reducing protrusion row 200, includes a plurality of spindle-shaped protrusions 210 arranged on the outside of the cold storage cavity shell 120, with the tips of the spindle-shaped protrusions 210 facing the windward plate 110. When the airflow of the air cooler or the airflow in the cold storage flows through the outside of the cold storage cavity shell 120, the spindle-shaped protrusions 210 structure on the outside of the cold storage cavity shell 120 can effectively control the boundary layer flow near its surface, delay the separation of the boundary layer, change the direction and velocity distribution of the air flow, and make the air flow smoother when passing through the surface, thereby enhancing the heat transfer of the fluid while reducing the turbulent energy dissipation and the resistance caused by it, and having good comprehensive heat transfer performance. In order to reduce the air flow resistance, a preferred embodiment is that the windward plate 110 is an arc-shaped plate with a circular outer surface. It should be noted that the arc-shaped outer surface is the windward surface. During specific use, the windward surface is close to the side of the air outlet of the air cooler. When the windward surface collides with the cold air flow, the smooth arc-shaped surface can reduce the air flow resistance, thereby avoiding the situation where the air flow rate at the air cooler outlet is too high during the cold storage box charging process and changes direction and disperses after the collision, thereby avoiding the situation where the cold storage box charging rate is reduced.

[0034] Combine Figure 3 As shown, Figure 3 A schematic structural diagram of the rapid heat exchange cold storage box 10 at another angle in one embodiment of the present application is shown. In order to allow the gas to quickly flow through the spindle protrusions under the guidance of the arc surface after colliding with the arc-shaped windward surface, specifically, the cold storage cavity shell 120 includes a first cold storage side plate 121 and a second cold storage side plate 122 that are opposite to the two side edges of the open end of the arc plate, and the first cold storage side plate 121 and the second cold storage side plate 122 are both provided with a row of drag-reducing protrusions 200. Through the above arrangement, the airflow can flow directly to the first cold storage side plate 121 and the second cold storage side plate 122 after being guided by the outer surface of the arc plate, thereby quickly flowing to the row of drag-reducing protrusions 200 on the first cold storage side plate 121 and the second cold storage side plate 122, thereby achieving - cold storage to enhance fluid heat transfer while reducing turbulent energy dissipation.

[0035] To ensure faster heat transfer from the first cold storage side plate 121, more specifically, at least two rows of drag-reducing protrusions 200 are provided on the first cold storage side plate 121. The spindle-shaped protrusions 210 in adjacent rows 200 are staggered. This arrangement of the spindle-shaped protrusions 210 on the first cold storage side plate 121 resembles the staggered arrangement of grass carp scales. This arrangement not only disturbs the airflow and disrupts the flow boundary layer, but also stimulates heat transfer from the rear row of spindle-shaped protrusions 210, creating a wake vortex around the front row of spindle-shaped protrusions 210. This results in faster heat transfer.

[0036] In the specific setting, the number of resistance reduction protrusion rows 200 provided on the first cold storage side plate 121 can be 3, 4, 6 or more. The resistance reduction protrusion rows 200 on the first cold storage side plate 121 are preferably arranged at equal intervals along the width direction of the first cold storage side plate 121, and adjacent resistance reduction protrusion rows 200 have a width gap; and the spindle-shaped protrusions 210 in the same resistance reduction protrusion row 200 in the first cold storage side plate 121 are preferably distributed at equal intervals along the length direction of the first cold storage side plate 121, and adjacent two spindle-shaped protrusions 210 in the same resistance reduction protrusion row 200 have a length gap, and preferably the length gap is greater than the width gap.

[0037] In order to enable the second cold storage side plate 122 to transfer heat more quickly, more specifically, at least two rows of drag-reducing protrusion rows 200 are provided on the second cold storage side plate 122, and the spindle-shaped protrusions 210 in the two adjacent rows of drag-reducing protrusion rows 200 are staggered. Through the above arrangement, the arrangement of the spindle-shaped protrusions 210 on the second cold storage side plate 122 is similar to the staggered arrangement of grass carp scales. On the one hand, it can disturb the airflow and destroy the flow boundary layer. On the other hand, the tail vortex generated by the airflow in the front row of spindle-shaped protrusions 210 has an stimulating effect on the heat transfer of the rear row of spindle-shaped protrusions 210, which can transfer heat faster. It should be noted that the arrangement of the drag-reducing protrusion rows 200 on the second cold storage side plate 122 is similar to that of the first cold storage side plate 121, and will not be described in detail here.

[0038] See again Figure 3It should be emphasized that the row of drag-reducing protrusions 200 on the first cold storage side plate 121 and the row of drag-reducing protrusions 200 on the second cold storage side plate 122 are symmetrically arranged with respect to the windward plate 110. When the windward surface of the windward plate 110 divides the airflow into upper and lower layers and flows through the surface of the first cold storage side plate 121 and the surface of the second cold storage side plate 122 respectively, the spindle-shaped protrusions 210 on the surface of the first cold storage side plate 121 and the second cold storage side plate 122 realize symmetrical cold storage on both sides at the same time. Moreover, the surfaces of the first cold storage side plate 121 and the second cold storage side plate 122 are both staggeredly distributed with spindle-shaped protrusions 210. After the air flowing in from the windward side passes through the spindle-shaped protrusions 210 on the surfaces of the first cold storage side plate 121 and the second cold storage side plate 122, the air flow direction changes from narrow to wide. On the one hand, it will not cause a significant increase in air pressure drop and flow resistance. On the other hand, it can cause periodic disturbances to the air flow state, thereby accelerating the surface convection heat transfer process of the first cold storage side plate 121 and the second cold storage side plate 122.

[0039] It should be noted that the current method of installing cold storage boxes in cold storage is to build an iron frame or wire mesh inside the cold storage and set the cold storage box on the iron frame or wire mesh using fasteners. However, this method is not convenient for replacing the cold storage box, and the disassembly and installation process is time-consuming.

[0040] Based on this, in order to quickly replace the cold storage box, more specifically, the cold storage cavity shell 120 also includes a third cold storage side plate 123 and a fourth cold storage side plate 124 that are opposite to the other two sides of the arc plate. The cold storage cavity shell 120 is also provided with a suspension groove 125, which opens on the third cold storage side plate 123 and / or the fourth cold storage side plate 124. Through the above arrangement, the rapid heat exchange cold storage box 10 in the present application can be directly hung on a hanger or a platform in the cold storage through the suspension groove 125, which facilitates manual replacement of the heat exchange cold storage box.

[0041] To facilitate the hanging and removal of the heat exchange cold storage tank, the opening depth of the suspension groove 125 occupies 55%-60% of the width of the first cold storage side plate 121 and the second cold storage side plate 122. Specifically, the suspension groove 125 extends through the thickness of the first cold storage side plate 121 and the second cold storage side plate 122 and preferably has a U-shaped structure. This arrangement ensures that the cold storage tank is securely attached to the hanger or stand, preventing it from falling.

[0042] In order to ensure the balance of the cold storage box when it is hung on the boom or stand, the number of suspension slots 125 is further provided, and the multiple suspension slots 125 are arranged at intervals. In the specific arrangement, the present application preferably has two suspension slots 125, and the two suspension slots 125 are symmetrically arranged about the center line of the first cold storage plate body parallel to its own width direction. It should be noted that the number of suspension slots 125 in the present application is not limited to two, and can also be three, four, five or more.

[0043] In order to enhance the structural stability of the cold storage box, more specifically, the rapid heat exchange cold storage box 10 further includes a reinforcing rib 300. The reinforcing rib 300 is disposed inside the cold storage cavity shell 120, and the reinforcing rib 300 connects the first cold storage side plate 121 and the second cold storage side plate 122. In the specific arrangement, the number of the reinforcing ribs 300 is preferably two, and the two reinforcing ribs 300 are symmetrically disposed about the center line of the cold storage cavity shell 120, and the length direction of the reinforcing rib 300 is parallel to the length direction of the first cold storage side plate. Through the above arrangement, the reinforcing rib 300 can compensate for the low strength caused by the long length of the cold storage cavity shell 120, which causes the cold storage cavity shell 120 to be easily deformed, bent, or expanded in this direction.

[0044] Furthermore, a first groove 1211 and a second groove 1221 are respectively provided on the outside of the first cold storage side plate 121 and the second cold storage side plate 122, facing the outside of the reinforcing rib 300. In the specific configuration, the first groove 1211 and the second groove 1221 respectively penetrate the wall thickness of the first cold storage side plate 121 and the second cold storage side plate 122 and are recessed to a certain extent toward the thickness direction of the reinforcing rib 300. The overall recessed depth of the first groove 1211 and the second groove 1221 is preferably between 2mm and 3.5mm. The first groove 1211 and the second groove 1221 are both rectangular, and both ends of the first groove 1211 and the second groove 1221 are configured with rounded corners. Through the above configuration, the reinforcing rib 300 can, on the one hand, alleviate the stress concentration effect in the region caused by the suspension groove 125 provided on the surface of the cold storage cavity shell 120.

[0045] It should be noted that the cold storage cavity shell 120 can be integrally formed, and the cold storage cavity shell 120 also includes a mounting plate 126, and the four sides of the mounting plate 126 are connected to the first cold storage side plate 121, the second cold storage side plate 122, the third cold storage side plate 123 and the fourth cold storage side plate 124 away from the windward plate 110, and the mounting plate 126, the windward plate 110, and the first cold storage side plate 121, the second cold storage side plate 122, the third cold storage side plate 123 and the fourth cold storage side plate 124 arranged between the windward plate 110 and the mounting plate 126 together form a storage cavity 130, wherein the wall thickness range of the first cold storage side plate 121, the second cold storage side plate 122, the third cold storage side plate 123 and the fourth cold storage side plate 124 is preferably between 1mm and 2mm.

[0046] To facilitate placement of the phase change material in the storage cavity 130, a filling nozzle 140 communicating with the storage cavity 130 is provided on the mounting plate 126. A removable sealing cap 150 is mounted on the filling nozzle 140. Specifically, the mounting plate 126 has a recessed portion 1261, and the filling nozzle 140 is positioned within the recessed portion 1261 on the mounting plate 126. This arrangement ensures that when the phase change material is filled, the raised portions 1262 on either side of the recessed portion 1261 ensure a sufficient amount of phase change material, effectively preventing deformation of the cold storage plate caused by volume expansion of the phase change material during the phase change process.

[0047] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A rapid heat exchange cold storage box, characterized in that: The rapid heat exchange cold storage box includes a cold storage box body and a resistance reduction protrusion row, wherein: The cold storage box includes a windward plate and a cold storage cavity shell connected to the windward plate, wherein the windward plate and the cold storage cavity shell form a storage cavity, and the storage cavity is used to store phase change material; The resistance-reducing protrusion row is arranged on the outer side of the cold storage cavity shell, and the resistance-reducing protrusion row includes a plurality of spindle-shaped protrusions spaced apart from each other, with the tips of the spindle-shaped protrusions facing the windward plate.

2. The rapid heat exchange cold storage box according to claim 1, characterized in that: The windward plate is an arc-shaped plate with an arc-shaped outer surface.

3. The rapid heat exchange cold storage box according to claim 2, characterized in that: The cold storage cavity shell includes a first cold storage side plate and a second cold storage side plate connected to both sides of the open end of the arc plate, and the first cold storage side plate and the second cold storage side plate are both provided with the resistance reducing protrusion row.

4. The rapid heat exchange cold storage box according to claim 3, characterized in that: At least two rows of the resistance-reducing protrusions are provided on the first cold storage side plate, and the spindle-shaped protrusions in two adjacent rows of the resistance-reducing protrusions are staggered.

5. The rapid heat exchange cold storage box according to claim 3, characterized in that: At least two rows of the resistance-reducing protrusions are provided on the second cold storage side plate, and the spindle-shaped protrusions in two adjacent rows of the resistance-reducing protrusions are staggered.

6. The rapid heat exchange cold storage box according to claim 3, characterized in that: The cold storage cavity shell also includes a third cold storage side plate and a fourth cold storage side plate connected to the other two sides of the arc plate. The cold storage cavity shell is also provided with a suspension groove, which opens to the third cold storage side plate and / or the fourth cold storage side plate.

7. The rapid heat exchange cold storage box according to claim 6, characterized in that: The opening depth of the suspension groove occupies 55%-60% of the width dimensions of the first cold storage side plate and the second cold storage side plate.

8. The rapid heat exchange cold storage box according to claim 6, characterized in that: There are multiple suspension grooves, and the multiple suspension grooves are arranged at intervals.

9. The rapid heat exchange cold storage box according to claim 3, characterized in that: The rapid heat exchange cold storage box further includes a reinforcing rib, which is arranged inside the cold storage cavity shell and connects the first cold storage side plate and the second cold storage side plate.

10. The rapid heat exchange cold storage box according to claim 9, characterized in that: A first groove and a second groove are respectively formed in the first cold storage side plate and the second cold storage side plate on the outside facing the reinforcing rib.

Images