Heat storage bricks that form a vertical and multi-horizontal branch three-dimensional air duct system

Abstract

The present invention proposes a heat storage brick that forms a vertical and multi-horizontal branch three-dimensional air duct system, which belongs to the field of heat storage technology. It includes horizontal grooves, vertical grooves, anchoring protrusions, etc. Vertical grooves are used to form vertical air ducts that are parallel in space and communicate with the horizontal channels formed by the horizontal grooves; the vertical air ducts are staggered to form the main air ducts for air inlet and outlet, and the horizontal channels automatically form multi-branch parallel branches, thereby establishing a three-dimensional air duct system. The chimney effect is fully utilized, and the upper surface, lower surface and side surfaces of the heat storage bricks are incorporated into the heat exchange air duct, thereby achieving balanced inlet air temperature difference, increasing heat exchange area, reducing temperature gradient, promoting heat exchange flow, and balancing air duct pressure, etc., significantly reducing the temperature difference between different heat storage bricks and different spatial parts of the same heat storage brick, and improving heat storage capacity, heat absorption and heat release efficiency and dynamic response performance. The original structure is fully utilized to form a meshing and anchoring relationship, simplifying the heat storage brick structure and processing technology.

Description

Technical Field

[0001] The present invention relates to a heat storage brick structure, in particular to a heat storage brick capable of forming a three-dimensional air duct system consisting of a vertical main air duct combined with multiple horizontal branches, belonging to the field of heat storage technology. Background Art

[0002] Thermal bricks, the basic building blocks of solid thermal storage devices, have a variety of mature and applied structures. However, the ventilation and heat dissipation ducts formed by the current solid thermal bricks are essentially two-dimensional structures. The most typical and widely used is the alternating orthogonal duct structure on the horizontal plane. Its characteristics are that each duct independently runs through the entire thermal storage body and is completely isolated from each other. The heating wires are generally located in multiple sets of parallel channels. Obviously, such a structure will lead to a large temperature difference between the beginning and end of each heat exchange duct, and also lead to excessive temperature differences between the heating wires in different channels.

[0003] There are also channels for installing heating wires that are not used as air ducts and are closed on both sides, which will result in heat exchange between the enclosed space of the heating wire and the circulating air through the heat storage body. Obviously, such a structure will cause a large temperature difference between the enclosed space of the heating wire and the circulating air, and the temperature of the heating wire will be higher.

[0004] A heat storage body is generally composed of multiple stacked heat storage bricks. The existing heat storage brick structure generally allows a portion of one surface of each heat storage brick to exchange heat with the electric heating wire, while a portion of the opposite surface exchanges heat with the gas in the heat exchange duct. Between two horizontally adjacent electric heating wire channels or heat exchange ducts is a thicker heat storage brick body, resulting in a small heat exchange area and a large temperature gradient within the heat storage brick, leading to excessive temperature differences within the heat storage body. For example, the Chinese patent "Electrically Heated Solid Heat Storage Bricks and Heat Storage Body (Application Number: 201721800913.7)" provides transverse trapezoidal grooves on the top of the heat storage brick and multiple longitudinal semicircular grooves on the bottom. The transverse and longitudinal channels are spatially orthogonal, and are not connected to each other within the heat storage body formed by the heat storage bricks, serving as heating element channels and heat exchange channels, respectively. Clearly, the temperature inside the heating element channel of this structure is much higher than that of the heat exchange channel.

[0005] In addition, regarding the anchoring of the heat storage bricks, the Chinese patent "A Self-anchoring Positioning Heat Storage Brick (Application Number: 201621233886.5)" provides meshing self-anchoring blocks and self-anchoring notches on both sides of the heat storage brick. Although this helps with fixation, it is still a two-dimensional air duct structure; and a wavy inner surface is provided on the flue, but the structure is parallel to the flue, making it difficult to form a turbulent effect that can promote sufficient heat exchange.

[0006] If the temperature difference between different heat storage bricks and between different spatial parts of the same heat storage brick is too large, the overall heat storage temperature will be reduced, thereby reducing the heat storage capacity, affecting the heat absorption and release characteristics, and reducing the efficiency and dynamic response performance of the heat storage system; if the temperature of the enclosed space of the heating wire is too high, it will also significantly reduce the service life of the heating wire. Summary of the Invention

[0007] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a heat storage brick that constitutes a vertical and multi-horizontal branch three-dimensional air duct system. Through the special structural design of the heat storage brick, a three-dimensional air duct system is established, in which a plurality of vertical air inlet channels and vertical air outlet channels are staggered to form a main air duct, and horizontal channels constitute multiple branch parallel branches. It can achieve balanced inlet air temperature difference, increase heat exchange area, reduce temperature gradient, promote heat exchange flow, balance air duct pressure, etc., thereby significantly reducing the temperature difference between different heat storage bricks and different spatial parts of the same heat storage brick, improving heat storage capacity, heat absorption and heat release efficiency and dynamic response performance, and increasing the service life of the heating wire. At the same time, it also has the advantages of simple structure, low cost, reliable operation, and easy maintenance.

[0008] The technical solution adopted by the present invention to solve its technical problem is:

[0009] The heat storage brick constituting the vertical and multi-horizontal branch three-dimensional air duct system comprises a horizontal groove (1), a first horizontal convex tooth (2), a second horizontal convex tooth (3), and a vertical groove (4).

[0010] The heat storage brick is rectangular, and a horizontal groove (1) runs through the bottom in the horizontal direction, with a first horizontal convex tooth (2) and a second horizontal convex tooth (3) being parallel on both sides.

[0011] The vertical groove (4) passes through the solid heat storage brick in the vertical direction, is orthogonal to the second horizontal convex tooth (3), divides the second horizontal convex tooth (3) into two parts, and is connected to the horizontal groove (1).

[0012] Furthermore, the vertical groove (4) is a rectangular groove or a trapezoidal groove.

[0013] Furthermore, the junction between the vertical groove (4) and the horizontal groove (1) is an inclined surface or an arc surface structure.

[0014] Furthermore, it includes an anchoring protrusion (5) located on the outer surface of the first horizontal protruding tooth (2) and capable of forming an engaging and anchoring relationship with the vertical groove (4).

[0015] Furthermore, it includes a first anchoring notch (6) and a second anchoring notch (7), which are located on the top of the heat storage brick and can form a meshing anchoring relationship with the first horizontal protruding tooth (2) and the second horizontal protruding tooth (3).

[0016] Furthermore, the inner surface of the horizontal groove (1) is a deflection structure (8) that is not parallel to the flow direction of the heated gas.

[0017] Furthermore, when the plurality of heat storage bricks are stacked together to form a heat storage body, the vertical grooves (4) form a plurality of vertical air inlet channels (9) and vertical air outlet channels (10), and the vertical air inlet channels (9) and vertical air outlet channels (10) are arranged in a spatially parallel and staggered manner.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The vertical groove structure creates multiple parallel vertical air ducts when the thermal storage bricks are stacked. These ducts connect to the horizontal grooves of each solid thermal storage brick. The vertical ducts serve as the main air inlet and outlet, while the horizontal channels automatically form multiple parallel branches, creating a three-dimensional air duct system. The vertical ducts leverage the chimney effect, automatically promoting internal air flow. Heat within the horizontal grooves is promptly discharged through the vertical ducts. This significantly reduces temperature differences between different thermal storage bricks and within different spatial locations within the same brick, improving heat storage capacity, heat absorption and release efficiency, and dynamic response performance. Furthermore, the system offers advantages such as simple structure, low cost, reliable operation, and easy installation and maintenance.

[0020] 2. The vertical air inlet and outlet channels serve as the main air ducts and are distributed in parallel and staggered in space to reduce the temperature gradient and achieve vertical air inlet and vertical air outlet with balanced temperature throughout the heat storage body, thus avoiding large temperature differences caused by different air inlet and outlet temperatures on each heat exchange surface.

[0021] 3. The upper surface, lower surface and side surfaces of the heat storage bricks are incorporated into the heat exchange air duct, which effectively increases the heat exchange area, reduces the temperature difference between different spatial parts of the same heat storage brick, and improves the heat storage capacity and heat absorption and heat release efficiency.

[0022] 4. The intersection of the vertical and horizontal grooves uses an inclined or curved surface structure to reduce the ventilation resistance of the horizontal branch. At the same time, the inner surface of the horizontal groove is designed with a deflection structure that is not parallel to the flow direction of the heated gas. This can effectively increase the turbulence of the gas flow, balance the pressure of the vertical main air duct and the horizontal branch channels, and increase the radiation heat exchange area of ​​the heating wire. This further reduces the overall temperature difference and improves the efficiency of heat absorption and heat release.

[0023] 5. The anchoring protrusions mesh with the existing vertical grooves, and the anchoring notches mesh with the existing horizontal teeth, achieving positioning and anchoring between the upper and lower, and front and back thermal storage bricks. This facilitates construction positioning, speeds up construction progress, improves overall stability, and simplifies the structure and processing of the solid thermal storage bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : Top view of solid thermal storage bricks.

[0025] Figure 2 : Side view of solid thermal storage brick.

[0026] Figure 3 : Right view of solid heat storage brick.

[0027] Figure 4 : Top view of stacked solid thermal storage bricks.

[0028] In the figure: 1-horizontal groove, 2-first horizontal protruding tooth, 3-second horizontal protruding tooth, 4-vertical groove, 5-anchoring protrusion, 6-first anchoring notch, 7-second anchoring notch, 8-baffle structure, 9-vertical air inlet channel, 10-vertical air outlet channel. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings:

[0030] like Figure 1 Shown is a top view of a solid thermal storage brick. Figure 2 The figure shows the side view of the solid heat storage brick. Figure 3 The figure shows a right side view of a solid heat storage brick. The heat storage brick constituting the vertical and multi-horizontal branch three-dimensional air duct system comprises a horizontal groove (1), a first horizontal convex tooth (2), a second horizontal convex tooth (3), a vertical groove (4), an anchoring protrusion (5), a first anchoring notch (6), a second anchoring notch (7), a deflection structure (8), a vertical air inlet channel (9) and a vertical air outlet channel (10).

[0031] Figure 1 、 Figure 2 and Figure 3 In the embodiment, the heat storage brick is rectangular, a horizontal groove (1) passes through the bottom in the horizontal direction, and a first horizontal convex tooth (2) and a second horizontal convex tooth (3) are parallel on both sides; a vertical groove (4) passes through the solid heat storage brick in the vertical direction, is orthogonal to the second horizontal convex tooth (3), divides the second horizontal convex tooth (3) into two parts, and is connected to the horizontal groove (1). The vertical groove (4) is a rectangular groove.

[0032] Figure 2 In the embodiment, the heated gas generally flows in a direction close to parallel to the horizontal groove (1). The inner surface of the horizontal groove (1) has a deflection structure (8) which is not parallel to the flow direction of the heated gas, which can make the heated gas flowing through form turbulence, balance the pressure of the vertical main air duct and each horizontal branch channel, and significantly improve the air heat exchange efficiency; and if a heating wire is installed in the horizontal groove (1), the radiation heat exchange area of ​​the heating wire can also be increased, thereby further reducing the overall temperature difference and improving the heat absorption and heat release efficiency.

[0033] like Figure 4 The figure shows a typical top view of stacked solid thermal storage bricks. Figure 4 It can be seen that when the plurality of heat storage bricks are stacked together to form a heat storage body, the vertical grooves (4) form a plurality of vertical air inlet channels (9) and vertical air outlet channels (10), and the vertical air inlet channels (9) and vertical air outlet channels (10) are arranged in parallel and staggered arrangement in space. Figure 4 In the embodiment, except for the edge area, the upper, lower, left, and right adjacent vertical air inlet channels (9) are vertical air outlet channels (10). Similarly, the upper, lower, left, and right adjacent vertical air outlet channels (10) are vertical air inlet channels (9). This reduces the temperature gradient, achieves vertical air inlet and vertical air outlet with uniform temperature throughout the heat storage body, and avoids the occurrence of large temperature differences caused by different air inlet and outlet temperatures on each heat exchange surface. Moreover, the vertical air duct fully utilizes the chimney effect and can automatically promote internal gas flow.

[0034] Figure 4 In the embodiment, when the adjacent left and right heat storage bricks are arranged, their respective horizontal grooves (1) are connected together to form a horizontal air duct. Since the vertical grooves (4) of each heat storage brick are connected to its horizontal grooves (1), that is, the multiple vertical air ducts and multiple horizontal air ducts formed are all connected, the heat inside the horizontal grooves can be discharged in time through the vertical air ducts. The vertical air inlet channel (9) and the vertical air outlet channel (10) serve as the main air ducts, and the horizontal channels automatically form multiple parallel branches, thus establishing a three-dimensional air duct system. In addition, the heating wire is generally located in the horizontal groove (1) of the heat storage brick. Obviously, in the vertical and multi-horizontal branch three-dimensional air duct system formed by the heat storage bricks, the upper surface, lower surface, part of the side surface, and the heating wire of each heat storage brick are all incorporated into the heat exchange air duct system. This significantly reduces the temperature difference between different heat storage bricks and different spatial parts of the same heat storage brick, thereby improving the heat storage capacity, heat absorption and heat release efficiency, and dynamic response performance. At the same time, it also has the advantages of simple structure, low cost, reliable operation, and easy installation and maintenance.

[0035] Figure 1 and Figure 4 When the front and rear heat storage bricks are arranged, the anchoring protrusion (5) of the front heat storage brick and the vertical groove (4) of the rear heat storage brick form a corresponding meshing anchoring relationship. Figure 2 and Figure 3It can be seen that when the upper and lower heat storage bricks are stacked, the first anchoring notch (6) and the second anchoring notch (7) of the lower heat storage brick form a corresponding meshing anchoring relationship with the first horizontal protruding tooth (2) and the second horizontal protruding tooth (3) of the upper heat storage brick. Obviously, the heat storage brick structure achieves the positioning and anchoring between the upper and lower and front and back heat storage bricks, so that there will be no translational movement between the front and back and upper and lower heat storage bricks, effectively strengthening and stabilizing the overall structure of the heat storage body, facilitating construction positioning, accelerating construction progress, and improving overall stability. Moreover, the original structure of the heat storage brick is fully utilized, simplifying the structure of the solid heat storage brick and also simplifying the processing technology.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The heat storage bricks that form a vertical and multi-horizontal branch three-dimensional air duct system are characterized by: It comprises a horizontal groove (1), a first horizontal convex tooth (2), a second horizontal convex tooth (3), and a vertical groove (4); The heat storage brick is rectangular, and a horizontal groove (1) runs through the bottom in the horizontal direction, with a first horizontal convex tooth (2) and a second horizontal convex tooth (3) on both sides being parallel; The vertical groove (4) passes through the solid heat storage brick in the vertical direction, is orthogonal to the second horizontal convex tooth (3), divides the second horizontal convex tooth (3) into two parts, and is communicated with the horizontal groove (1); the inner surface of the horizontal groove (1) is a deflection structure (8) that is not parallel to the flow direction of the heated gas; when the plurality of heat storage bricks are combined and stacked to form a heat storage body, the vertical groove (4) forms a plurality of vertical air inlet channels (9) and vertical air outlet channels (10), and the vertical air inlet channels (9) and vertical air outlet channels (10) are arranged in a spatially parallel and staggered manner; The vertical groove (4) is a rectangular groove or a trapezoidal groove; The junction between the vertical groove (4) and the horizontal groove (1) is an inclined surface or an arc surface structure.

2. The heat storage brick constituting the vertical and multi-horizontal branch three-dimensional air duct system according to claim 1 is characterized in that: It comprises an anchoring protrusion (5) which is located on the outer surface of the first horizontal protruding tooth (2) and can form an engaging and anchoring relationship with the vertical groove (4).

3. The heat storage brick constituting the vertical and multi-horizontal branch three-dimensional air duct system according to claim 1 is characterized in that: It comprises a first anchoring notch (6) and a second anchoring notch (7), which are located on the top of the heat storage brick and can form a meshing anchoring relationship with the first horizontal protruding tooth (2) and the second horizontal protruding tooth (3).

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