Rapid heat conduction ground heating floor based on convective heat transfer

Abstract

The utility model discloses a rapid heat conduction ground heating floor based on convective heat transfer, which comprises a floor body (1), a plurality of convection channels (2) are distributed in the middle of the floor body (1) at intervals, a heating layer (201) is formed at the bottom of each convection channel (2), and a heat conduction layer (202) is formed at the top of each convection channel (2); air in the heating layer (201) is used for flowing upwards to the heat conduction layer (202) after being heated and heating the top of the floor body (1), and the floor heating function is achieved. The heat conduction efficiency of the floor heating floor can be improved, and paving of manufacturers is facilitated.

Description

Technical Field

[0001] This utility model relates to a floor heating system, and more particularly to a fast-heat-conducting floor heating system based on convection heat transfer. Background Technology

[0002] Conventional underfloor heating systems involve laying heating pipes or other heating mechanisms beneath the floor. These mechanisms heat the entire underfloor, which then conducts the heat to the surface, providing the heating function. However, because wood is a good porous insulation material, it has a relatively slow thermal conductivity, making it difficult to meet users' thermal conductivity requirements for underfloor heating systems.

[0003] Based on this, in order to improve the thermal conductivity of underfloor heating flooring, manufacturers generally use three methods to increase the heat transfer speed of the flooring. The first method is to shorten the distance between the heating mechanism and the floor surface. For example, grooves are cut into the back of the underfloor heating flooring, and the heating mechanism is fastened into the grooves; or through holes are made in the middle of the flooring, and the heating mechanism is inserted through each floorboard along the through holes, thereby shortening the heat transfer distance from the heat source to the floor surface. However, the drawback of this structure is that, whether the heating mechanism is fastened into the grooves in the back of the flooring or the heating pipe is inserted into the middle of the flooring, it will significantly increase the difficulty of installing the heating mechanism and the underfloor heating flooring. On the one hand, both need to have sufficient dimensional accuracy to avoid installation errors during assembly; on the other hand, the installers also need to have a high level of installation skills to ensure stable assembly of both, which reduces the manufacturer's installation efficiency of the underfloor heating flooring and increases the labor costs required for flooring installation.

[0004] The second method is to overcome the slow thermal conductivity of wood by adding high thermal conductivity materials to the flooring. However, since high thermal conductivity materials are expensive, this method increases the cost of the flooring and cannot meet the manufacturer's economic requirements.

[0005] The third method is to directly reduce the overall thickness of the floor. However, reducing the thickness of the floor will cause insufficient dimensional stability, making the floor more prone to warping and deformation in a geothermal environment, and thus reducing the feel of the floor underfoot.

[0006] Therefore, existing underfloor heating systems cannot simultaneously possess the characteristics of good heat conduction and easy installation. Utility Model Content

[0007] The purpose of this invention is to provide a fast-heat-conducting underfloor heating floor based on convection heat transfer. It improves the thermal conductivity of the underfloor heating floor and facilitates installation for manufacturers.

[0008] The technical solution of this utility model is as follows: a fast-heating underfloor heating floor based on convection heat transfer, comprising a floor body, wherein a plurality of convection channels are distributed at intervals in the middle of the floor body, a heating layer is formed at the bottom of the convection channels, and a heat-conducting layer is formed at the top of the convection channels; the air in the heating layer is used to flow upward to the heat-conducting layer after being heated, and to heat the top of the floor body to realize the underfloor heating function.

[0009] In the aforementioned type of rapid heat conduction underfloor heating floor based on convection heat transfer, the floor body includes a core board, with a front panel and a back panel connected to the upper and lower sides of the core board, respectively, and the convection channel is opened inside the core board.

[0010] In the aforementioned type of fast-heat-conducting underfloor heating floor based on convection heat transfer, the core board is made of multiple wooden strips spliced ​​together, and convection channels are formed in the gaps between adjacent wooden strips.

[0011] In the aforementioned fast-heat-conducting underfloor heating floor based on convection heat transfer, the core board includes a splicing layer, the top of which is connected to the panel via an upper connecting layer, and the bottom of which is connected to the back panel via a lower connecting layer. The splicing layer is composed of multiple wooden strips spliced ​​together, and convection channels are formed at the gaps between adjacent wooden strips.

[0012] In the aforementioned type of fast-heat-conducting underfloor heating floor based on convection heat transfer, a reinforcing rib is connected to the middle of the floor body, and the reinforcing rib and the convection channel are arranged perpendicular to each other and penetrate through each convection channel.

[0013] In the aforementioned fast-heat-conducting underfloor heating floor based on convection heat transfer, the convection channel extends through the floor body along its length. The cross-sectional shape of the convection channel is circular, rectangular, or regular polygonal. The height of the convection channel is not less than 10mm, and the width of the convection channel is not less than 5mm.

[0014] Compared with the prior art, this utility model has the following characteristics:

[0015] (1) This utility model opens a convection channel in the middle of the wooden floor, so that the heating mechanism can heat the air at the bottom of the convection channel when in use. After the air at the bottom is heated, it will flow upward to the top of the convection channel and then heat the surface of the wooden floor above, thus realizing the underfloor heating function. With the above combination, this utility model can use air convection heat transfer instead of wood heat conduction to achieve the heat transfer effect, that is, it effectively improves the heat conduction efficiency of the wooden floor compared with the existing underfloor heating floor. Moreover, since this utility model only requires the underfloor heating floor to be laid on top of the heating mechanism in a conventional way, there is no matching structure between the two, which can effectively reduce the installation difficulty compared with the fastening, plugging and other matching methods, thereby improving the installation efficiency of the manufacturer and reducing its installation cost.

[0016] (2) Based on the above, this utility model splices the floorboards together with core boards, face boards and back boards, and splices the core boards together with several small-sized wood strips, so that manufacturers can also process wood waste into wood strips, which effectively saves the material cost of underfloor heating flooring and has an environmental protection effect.

[0017] (3) Since the core board is made of spliced ​​wood strips and has a large number of hollow areas, it will reduce the amount of wood consumption and weight required for the floor and facilitate the transportation of the manufacturer; furthermore, the reduction in the amount of wood used can also reduce the amount of heat that the floor needs to absorb, thereby further increasing the heating rate of the floor surface.

[0018] (4) By using reinforcing ribs that are perpendicular to each convection channel and penetrate each convection channel, the overall structural strength of the floor body can be improved, thereby alleviating the strength reduction caused by opening convection channels in the floor body and ensuring that the physical properties of the underfloor heating floor meet the requirements.

[0019] Therefore, this utility model can improve the thermal conductivity of underfloor heating flooring and facilitate the installation by manufacturers. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the working principle of this utility model;

[0021] Figure 2 This is a cross-sectional view of Embodiment 1 on one side;

[0022] Figure 3 This is a cross-sectional view of Embodiment 1 on the other side;

[0023] Figure 4 This is a cross-sectional view of Example 2 on one side;

[0024] Figure 5 This is a cross-sectional view of Embodiment 2 on the other side;

[0025] Figure 6 This is a cross-sectional view of Example 3 on one side;

[0026] Figure 7 This is a cross-sectional view of Embodiment 3 on the other side;

[0027] Figure 8 This is a cross-sectional view of Example 4 on one side;

[0028] Figure 9 This is a cross-sectional view of Embodiment 4 on the other side.

[0029] The labels in the attached diagram are: 1-floor body, 2-convection channel, 3-reinforcing rib, 101-core board, 102-panel, 103-back panel, 1011-joining layer, 1012-upper connecting layer, 1013-lower connecting layer, 201-heating layer, 202-heat-conducting layer. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0031] Example 1. A fast-heat-conducting underfloor heating floor based on convection heat transfer, comprising as follows: Figure 2-3 As shown, the floor includes a floor body 1, with several convection channels 2 distributed at intervals in the middle of the floor body 1. A heating layer 201 is formed at the bottom of the convection channels 2, and a heat-conducting layer 202 is formed at the top of the convection channels 2. The air in the heating layer 201 is used to flow upward to the heat-conducting layer 202 after being heated, and to heat the top of the floor body 1, thereby realizing the underfloor heating function.

[0032] The floor body 1 includes a core board 101, with a front panel 102 and a back panel 103 connected to the upper and lower sides of the core board 101, respectively. The convection channel 2 is formed inside the core board 101.

[0033] The core board 101 is made of multiple wooden strips spliced ​​together, and convection channels 2 are formed at the gaps between adjacent wooden strips.

[0034] The convection channel 2 extends through the floor body 1 along its length. The cross-sectional shape of the convection channel 2 is square, and the width and height of the convection channel 2 are both 12mm.

[0035] The working principle diagram of this utility model is as follows: Figure 1 As shown, during use, the underfloor heating floor is installed on the heating mechanism in a conventional manner, allowing the heating mechanism to heat the air X at the bottom of the convection channel after it is turned on. After being heated, the air X forms convection with the cold air Y at the top of the convection channel; that is, the hot air X flows upward and the cold air Y flows downward. This allows the hot air X to quickly move to the top of the convection channel under the influence of convection, thereby heating the surface of the underfloor heating floor and achieving the underfloor heating function. With the above combination, this invention utilizes air convection instead of wood conduction to achieve heat transfer in the convection channel area, effectively improving the thermal conductivity of the underfloor heating floor and facilitating installation for manufacturers.

[0036] Based on this, by splicing together several wooden strips of specific shapes to form a core board 101, it is possible to achieve air convection heat transfer while effectively reducing the consumption of wood and lowering its material costs.

[0037] Example 2. A fast-heat-conducting underfloor heating floor based on convection heat transfer, comprising as follows: Figure 4-5 As shown, the floor includes a floor body 1, with several convection channels 2 distributed at intervals in the middle of the floor body 1. A heating layer 201 is formed at the bottom of the convection channels 2, and a heat-conducting layer 202 is formed at the top of the convection channels 2. The air in the heating layer 201 is used to flow upward to the heat-conducting layer 202 after being heated, and to heat the top of the floor body 1, thereby realizing the underfloor heating function.

[0038] The floor body 1 includes a core board 101, with a front panel 102 and a back panel 103 connected to the upper and lower sides of the core board 101, respectively. The convection channel 2 is formed inside the core board 101.

[0039] The core board 101 includes a splicing layer 1011. The top of the splicing layer 1011 is connected to the panel 102 via an upper connecting layer 1012, and the bottom of the splicing layer 1011 is connected to the back panel 103 via a lower connecting layer 1013. The splicing layer 1011 is made of multiple wooden strips spliced ​​together, and convection channels 2 are formed at the gaps between adjacent wooden strips. Both the upper connecting layer 1012 and the lower connecting layer 1013 are made of wood-based panels.

[0040] The floor body 1 is connected to a reinforcing rib 3 in the middle. The reinforcing rib 3 and the convection channel 2 are arranged perpendicularly to each other and pass through each convection channel 2.

[0041] The convection channel 2 extends through the floor body 1 along its length. The cross-sectional shape of the convection channel 2 is rhomboid, and the width and height of the convection channel 2 are both 12mm.

[0042] This embodiment, through the structural cooperation of the upper connecting layer 1012 and the lower connecting layer 1013, can increase the thickness of the wood at the top and bottom of the floor, thus ensuring the structural strength and stability of the floor even after the thickness of the panel 102 and the back panel 103 is reduced. Secondly, the addition of the reinforcing ribs 3 improves the overall structural strength of the underfloor heating floor, mitigating the strength reduction caused by the opening of the convection channels 2, and enabling the underfloor heating floor to achieve the required physical properties.

[0043] Example 3. A fast-heat-conducting underfloor heating floor based on convection heat transfer, comprising as follows: Figure 6-7 As shown, the floor includes a floor body 1, with several convection channels 2 distributed at intervals in the middle of the floor body 1. A heating layer 201 is formed at the bottom of the convection channels 2, and a heat-conducting layer 202 is formed at the top of the convection channels 2. The air in the heating layer 201 is used to flow upward to the heat-conducting layer 202 after being heated, and to heat the top of the floor body 1, thereby realizing the underfloor heating function.

[0044] The floor body 1 includes a core board 101, with a front panel 102 and a back panel 103 connected to the upper and lower sides of the core board 101, respectively. The convection channel 2 is formed inside the core board 101.

[0045] The core board 101 is composed of multiple wooden strips with openings between them. When adjacent openings are closed, they form a convection channel 2.

[0046] The floor body 1 is connected to a number of reinforcing ribs 3 in the middle. The interval between adjacent reinforcing ribs 3 is not less than 40mm. The reinforcing ribs 3 and the convection channels 2 are arranged perpendicular to each other and pass through each convection channel 2.

[0047] The convection channel 2 extends through the floor body 1 along its length. The cross-sectional shape of the convection channel 2 is circular, and the diameter of the convection channel 2 is 12mm.

[0048] Compared with Embodiment 1 and Embodiment 2, this embodiment changes the composite structure of the core plate 101 and the shape of the convection channel 2, but can still achieve the function of air convection heat transfer and improve the applicability of this utility model.

[0049] Example 4. A fast-heat-conducting underfloor heating floor based on convection heat transfer, comprising as follows: Figure 8-9 As shown, the floor includes a floor body 1, with multiple convection channels 2 spaced apart in the middle of the floor body 1. A heating layer 201 is formed at the bottom of the convection channels 2, and a heat-conducting layer 202 is formed at the top of the convection channels 2. The air in the heating layer 201 is used to flow upward to the heat-conducting layer 202 after being heated, and to heat the top of the floor body 1 to achieve the underfloor heating function.

[0050] The floor body 1 includes a core board 101, which is made of cedar wood. The upper and lower sides of the core board 101 are respectively connected to a front panel 102 and a back panel 103. The front panel 102 and the back panel 103 are both made of merbau wood and have a thickness of 1mm. The convection channel 2 is opened in the core board 101.

[0051] The core board 101 includes a splicing layer 1011. The top of the splicing layer 1011 is connected to the panel 102 via an upper connecting layer 1012, and the bottom of the splicing layer 1011 is connected to the back panel 103 via a lower connecting layer 1013. The splicing layer 1011 is composed of multiple rectangular cross-section wooden strips spaced apart. The width of the wooden strips is 10mm, and the thickness of both the upper and lower connecting layers is 2.5mm.

[0052] The convection channel 2 extends through the floor body 1 along its length. The cross-sectional shape of the convection channel 2 is rectangular, with a height of 14mm and a width of 5mm.

[0053] The floor body 1 has multiple reinforcing ribs 3 connected to its middle part. The reinforcing ribs 3 are circular in shape and have a diameter of 8mm. The spacing between adjacent reinforcing ribs 3 is 60mm. The reinforcing ribs 3 and the convection channels 2 are arranged perpendicular to each other and pass through each convection channel 2.

[0054] This embodiment specifically defines the structure and related dimensions of the underfloor heating floor, enabling it to significantly improve its thermal conductivity while ensuring the structural strength of the floor.

[0055] Experimental Example 1: This experimental example uses the flooring from Example 4 as a sample, and tests the sample according to the testing standard of GB / T18103-2022 "Solid Wood Composite Flooring". The static bending strength of the sample is greater than 30.0 MPa and the elastic modulus is greater than 4000 MPa, which shows that the underfloor heating flooring of this utility model can meet the national performance requirements for solid wood composite flooring after the convection channels are opened.

[0056] Experimental Example 2: In this example, the flooring from Example 4 was used as Sample 1, and Samples 2, 3, and 4 were also prepared. Sample 2 did not have convection channels, but its structure and materials were identical to the underfloor heating flooring from Example 4. Sample 3 had convection channels with a height of 8 mm and a width of 5 mm, and its structure and materials were identical to the underfloor heating flooring from Example 4. Sample 4 also did not have convection channels, but its structure and materials were identical to the underfloor heating flooring from Sample 3. That is, Samples 1 and 2 had the same total thickness, and Samples 3 and 4 had the same total thickness, with Sample 3 being 6 mm thinner than Sample 1. The thermal conductivity of the four samples was then tested according to the testing standard LY / T 1700-2018 "Wooden Flooring for Underfloor Heating".

[0057] The thermal conductivity of sample 1 was 11.54, sample 2 was 10.27, sample 3 was 10.76, and sample 4 was 10.82. The results show that sample 1 has a 12% higher thermal conductivity than sample 2, indicating that this invention effectively improves the thermal conductivity of the underfloor heating floor by limiting the structure of the convection channel. Sample 3 has a lower thermal conductivity than sample 1 and a slight decrease compared to sample 4. This suggests that when the height of the convection channel is too small, the fluid viscosity between air and wood prevents effective airflow. Air, under obstructed conditions, has a lower thermal conductivity than wood, thus reducing the overall thermal conductivity of the floor.

Claims

1. A rapid heat conduction underfloor heating floor based on convective heat transfer, characterized in that: The system includes a floor body (1), with several convection channels (2) spaced apart in the middle of the floor body (1). A heating layer (201) is formed at the bottom of the convection channels (2), and a heat-conducting layer (202) is formed at the top of the convection channels (2). The air in the heating layer (201) is used to flow upward to the heat-conducting layer (202) after being heated, and to heat the top of the floor body (1) to achieve the function of underfloor heating. The floor body (1) includes a core board (101), and a front panel (102) and a back panel (103) are respectively connected to the upper and lower sides of the core board (101). The convection channel (2) is opened in the core board (101). The core board (101) is made of multiple wooden strips spliced ​​together, and convection channels (2) are formed at the gaps between adjacent wooden strips.

2. The rapid heat conduction floor heating system based on convection heat transfer according to claim 1, characterized in that: The core board (101) includes a splicing layer (1011), the top of the splicing layer (1011) is connected to the panel (102) via an upper connecting layer (1012), and the bottom of the splicing layer (1011) is connected to the back panel (103) via a lower connecting layer (1013). The splicing layer (1011) is made of multiple wooden strips spliced ​​together, and convection channels (2) are formed at the gaps between adjacent wooden strips.

3. The rapid heat conduction floor heating system based on convective heat transfer according to claim 1, characterized in that: The floor body (1) is connected to a reinforcing rib (3) in the middle. The reinforcing rib (3) and the convection channel (2) are arranged perpendicular to each other and pass through each convection channel (2).

4. The rapid heat conduction floor heating system based on convection heat transfer according to claim 1, characterized in that: The convection channel (2) penetrates the floor body (1) along its own length direction. The cross-sectional shape of the convection channel (2) is circular, rectangular or regular polygonal. The height of the convection channel (2) is not less than 10mm and the width of the convection channel (2) is not less than 5mm.

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