Heating body assembly

Abstract

The invention relates to the field of pipeline heating equipment, and discloses a heating body assembly which comprises a hollow first pipe body and a hollow second pipe body, a first inner cavity is formed in the first pipe body in the vertical direction, a second inner cavity is formed in the second pipe body in the vertical direction, the outer side of the first pipe body is sleeved with a first heating pipe, and the outer side of the second pipe body is sleeved with a second heating pipe. The second pipe body is sleeved with a second heating pipe, a first spiral flow guide channel is arranged between the first pipe body and the first heating pipe, the lower portion of the first spiral flow guide channel is communicated with a water inlet, and the upper portion of the first spiral flow guide channel is communicated with the upper portion of the first inner cavity. According to the heating body assembly, the flow speed of water flow is slower than that of a metal heating pipe, so that heat exchange between water and the heating pipe is more sufficient; and water in the first spiral flow guide channel and the second spiral flow guide channel flows from bottom to top, so that the heat exchange efficiency is improved, the higher outlet water temperature is ensured, and the use requirements are met.

Description

Technical Field

[0001] The present invention relates to the field of pipeline heating equipment, and in particular to a heating body assembly. Background Art

[0002] Thick-film heating technology is finding increasing applications as thick-film sintering technology matures. Used in electric water heaters, this technology primarily involves sintering a thick-film heating layer onto a metal thermally conductive element. As water contacts and passes through the thermally conductive element, it absorbs heat, raising the outlet temperature. Thick-film heaters are commonly used to heat liquids, and are generally available in two types: plate-type and tubular. Existing tubular thick-film heaters utilize a thick-film circuit printed on the outer wall of a metal heating tube. When energized, this thick-film circuit generates heat, heating the liquid within the tube.

[0003] In the heating body components of some existing thick film heaters, the water flow rate is too fast relative to the metal heat conducting element, the heat exchange between the metal heat conducting element and the internal water is insufficient, the heat exchange efficiency is low, and the outlet water temperature is low, which cannot meet the use requirements. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] The problem to be solved by the present invention is to provide a heating body assembly in which the water flow rate is slower than that of the metal heating tube, so that the heat exchange between the water and the heating tube is more sufficient; and the water in the first spiral guide channel and the second spiral guide channel flows from bottom to top, thereby improving the heat exchange efficiency, ensuring a higher water outlet temperature, and meeting the use requirements.

[0006] (2) Technical solution

[0007] 18. The heat dissipation device as claimed in claim 15, wherein the bridge has two opposite ends, and the ends are connected along the longitudinal direction of the heat dissipation device, the ends being connected along the longitudinal direction of the heat dissipation device, the bridge having two opposite ends, and the ends being connected along the longitudinal direction of the heat dissipation device. The channel can slow down the flow rate of water, making the heat exchange longer and more sufficient. In the heating body assembly of the present invention, the water flow rate is slower than that of the metal heating tube, making the heat exchange between the water and the heating tube more sufficient. Moreover, the water in the first spiral guide channel and the second spiral guide channel flows from bottom to top, which improves the heat exchange efficiency and ensures a high water outlet temperature to meet the use requirements. When the heating tube heats up, part of the heat is transferred to the water inside to heat the water; another part of the heat is transferred to the air outside the heating tube. After the air is heated, it rises, causing the heat outside the heating tube to rise and accumulate in the upper part, making the upper part of the heating tube generate more heat than the lower part. In the two spiral guide channels of the heating body assembly, the water flows from bottom to top. The water is first heated by the low-temperature zone at the bottom of the heating tube. The water after the preliminary heating flows spirally upward to the high-temperature zone at the top of the heating tube. At this time, the water after the preliminary heating is further heated by the high-temperature zone, so that the water can have a large heat exchange temperature difference between the low-temperature zone and the high-temperature zone, which can improve the heat exchange efficiency and the final water outlet temperature, and provide a good user experience.

[0008] Furthermore, the axial direction of the first tube body and the axial direction of the second tube body are both perpendicular to the horizontal plane, the first spiral guide channel extends spirally along the axial direction of the first tube body, and the second spiral guide channel extends spirally along the axial direction of the second tube body.

[0009] Furthermore, a first spiral guide plate is provided on a protruding outer wall of the first tube body, and the first spiral guide channel is formed between the first tube body, the first heating tube and the first spiral guide plate; a second spiral guide plate is provided on a protruding outer wall of the second tube body, and the second spiral guide channel is formed between the second tube body, the second heating tube and the second spiral guide plate.

[0010] Furthermore, a first communicating hole is provided on the upper portion of the first tube body, and the upper portion of the first spiral guide channel is communicated with the upper portion of the first inner cavity through the first communicating hole.

[0011] Furthermore, a second communicating hole is provided on the upper portion of the second tube body, and the upper portion of the second spiral guide channel is connected with the upper portion of the second inner cavity through the second communicating hole.

[0012] Furthermore, a first channel is connected between the water inlet and the lower portion of the first spiral guide channel, and the first channel extends in a horizontal direction.

[0013] Furthermore, the water outlet is connected to the lower part of the second inner cavity through a second channel, and one end of the second channel away from the water outlet is connected to the first buffer cavity.

[0014] Furthermore, the heating body assembly also includes a hollow outer shell, the first heating tube and the second heating tube are both placed inside the outer shell, and a hot air guide cavity is formed inside the outer shell.

[0015] Furthermore, a third channel is connected between the lower portion of the second spiral guide channel and the lower portion of the first inner cavity; and the third channel extends in a horizontal direction.

[0016] Furthermore, one end of the third channel is connected to the second buffer cavity, and one end of the third channel is connected to the third buffer cavity.

[0017] (3) Beneficial effects

[0018] In the heating body assembly of the present invention, the water flow rate is slower than that of the metal heating tube, so that the heat exchange between the water and the heating tube is more sufficient; and the water in the first spiral guide channel and the second spiral guide channel flows from bottom to top, which improves the heat exchange efficiency and ensures a higher water outlet temperature to meet the use requirements; a first channel is connected between the water inlet and the lower part of the first spiral guide channel, and the first channel extends in the horizontal direction. Water enters from the water inlet, flows through the first channel, and changes direction upward to flow into the first spiral guide channel. The water flow direction is reversed at a right angle, which can buffer the water flow speed and reduce the speed of the water entering the first spiral guide channel, so that the heat exchange is sufficient; a hot air guide cavity is formed on the inside of the outer shell. After being heated, the air at the lower outer sides of the first heating tube and the second heating tube is directed upward to the upper part along the hot air guide cavity, so that heat is accumulated in the upper part, and the outer shell plays a role in heat preservation and guidance for the hot air inside; the lower part of the second spiral guide channel is connected to the lower part of the first inner cavity with a third channel, and the water flow rate discharged from the first inner cavity and entering the second spiral guide channel is reduced after being reversed twice at right angles through the third channel, so that heat exchange is sufficient; one end of the third channel is connected to the second buffer cavity, and the other end is connected to the third buffer cavity. After the water in the lower part of the first inner cavity flows into the third channel, it enters the second buffer cavity and the third buffer cavity for buffering, thereby reducing the water flow rate and making the water flow smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of a heating element assembly according to the present invention;

[0020] Figure 2 A cross-sectional view of the heating element assembly of the present invention Figure 1 ;

[0021] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0022] Figure 4 A cross-sectional view of the heating element assembly of the present invention Figure 2 ;

[0023] Figure 5 This is a schematic structural diagram of the second connecting hole of the heating body assembly of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the first connecting hole of the heating body assembly of the present invention;

[0025] 10 is the outer shell, 11 is the hot air guide cavity, 12 is the mounting base, 13 is the first sealing ring, 14 is the second sealing ring, 15 is the third sealing ring, 16 is the fourth sealing ring, 17 is the upper cover, 18 is the fifth sealing ring, 19 is the sixth sealing ring, 20 is the seventh sealing ring, and 21 is the eighth sealing ring. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0027] See Figures 1-6The present invention provides a heating body assembly, comprising: a hollow first tube body 1 and a second tube body 2, wherein a first inner cavity 101 is provided in the first tube body 1 along the vertical direction, and a second inner cavity 201 is provided in the second tube body 2 along the vertical direction, a first heating tube 3 is sheathed on the outer side of the first tube body 1, and a second heating tube 4 is sheathed on the outer side of the second tube body 2, both of the first heating tube 3 and the second heating tube 4 are made of metal with good thermal conductivity, and thick film heating circuits are printed on the outer walls of the first heating tube 3 and the second heating tube 4; A first spiral guide channel 5 is provided between the second tube body 2 and the second heating tube 4, the lower part of the first spiral guide channel 5 is connected to the water inlet 501, and the upper part of the first spiral guide channel 5 is connected to the upper part of the first inner cavity 101; a second spiral guide channel 6 is provided between the second tube body 2 and the second heating tube 4, the lower part of the second spiral guide channel 6 is connected to the lower part of the first inner cavity 101, the upper part of the second spiral guide channel 6 is connected to the upper part of the second inner cavity 201, and the lower part of the second inner cavity 201 is connected to the water outlet 2011. The first spiral guide channel 5 and the second spiral guide channel Channel 6 can slow down the flow rate of water, making heat exchange longer and more sufficient; in the heating body assembly of the present invention, the water flow rate is slower than that of the metal heating tube, making the heat exchange between the water and the heating tube more sufficient; and the water in the first spiral guide channel and the second spiral guide channel flows from bottom to top, improving the heat exchange efficiency, ensuring a high water outlet temperature, and meeting the use requirements; because part of the heat of the heating tube is transferred to the water inside to heat the water, and part of the heat is transferred to the air outside the heating tube, this part of the air rises after heating, causing the heat outside the heating tube to rise and accumulate in the upper part, making the upper part of the heating tube generate more heat than the lower part; the water in the two spiral guide channels of the heating body assembly flows from bottom to top, and the water is first preliminarily heated by the low-temperature zone at the bottom of the heating tube. The preliminarily heated water spirally flows upward to the high-temperature zone at the top of the heating tube. At this time, the preliminarily heated water is further heated by the high-temperature zone, so that the water can have a large heat exchange temperature difference between the low-temperature zone and the high-temperature zone, which can improve the heat exchange efficiency and the final water outlet temperature, and provide a good user experience.

[0028] See Figure 1-Figure 3The axial directions of the first tube body 1 and the second tube body 2 are both perpendicular to the horizontal plane, the first spiral guide channel 5 extends spirally along the axial direction of the first tube body 1, and the second spiral guide channel 6 extends spirally along the axial direction of the second tube body 2, so as to slow down the flow rate of the water body and ensure sufficient heat exchange; the outer wall of the first tube body 1 is protruded with a first spiral guide plate 102, and the first spiral guide channel 5 is formed between the first tube body 1, the first heating tube 3 and the first spiral guide plate 102; the outer wall of the second tube body 2 is protruded with a second spiral guide plate 202, and the second spiral guide channel 6 is formed between the second tube body 2, the second heating tube 4 and the second spiral guide plate 202; the first spiral guide plate 102 is integrally formed with the first tube body 1, and the second spiral guide plate 202 is integrally formed with the second tube body 2.

[0029] See Figure 2 、 Figure 5 and Figure 6 A first circular hole 103 is provided on the upper part of the first tube body 1, and the upper part of the first spiral guide channel 5 is connected with the upper part of the first inner cavity 101 through the first communicating hole 103; a second circular hole 203 is provided on the upper part of the second tube body 2, and the upper part of the second spiral guide channel 6 is connected with the upper part of the second inner cavity 201 through the second communicating hole 203. The structural design is reasonable.

[0030] See Figure 2-Figure 4 The water inlet 501 is connected to the lower part of the first spiral guide channel 5 by a first channel 7, which extends in the horizontal direction. Water enters from the water inlet 501, flows through the first channel 7 and changes direction upward to flow into the first spiral guide channel 5. The water flow direction is reversed at a right angle of 90 degrees, which can buffer the water flow speed and reduce the speed of the water entering the first spiral guide channel 5, so that the heat exchange is sufficient; the water outlet 2011 is connected to the lower part of the second inner cavity 201 by a second channel 8, and the second channel 8 extends in the horizontal direction. Extending in the horizontal direction, the second channel 8 is connected to the first buffer chamber 801 at one end away from the water outlet 2011, and a part of the water flowing out of the lower part of the second inner cavity 201 enters the first buffer chamber 801 for buffering; the water outlet 2011 is opened downward, and the water flows into the second channel 8 from the lower part of the second inner cavity 201. At this time, the direction of the water flow is reversed at a right angle of 90 degrees, which can buffer the water flow speed, and then the water flow is reversed at a right angle of 90 degrees again through the downward water outlet 2011 to stabilize the flow rate of the water.

[0031] See Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6The heating body assembly also includes a hollow outer shell 10 and a mounting seat 12. The lower parts of the first tube body 1 and the second tube body 2 are both plugged into the mounting seat 12. A first sealing ring 13 is provided between the first tube body 1 and the mounting seat 12, a second sealing ring 14 is provided between the second tube body 2 and the mounting seat 12, a third sealing ring 15 is provided between the first heating tube 3 and the mounting seat 12, and a fourth sealing ring 16 is provided between the second heating tube 4 and the mounting seat 12. The sealing effect is good to avoid water leakage; the first heating tube 3 and the second heating tube 4 are both placed on the inner side of the outer shell 10, and a hot air guide cavity 11 is formed on the inner side of the outer shell 10. The lower outer sides of the first heating tube 3 and the second heating tube 4 are After being heated, the air is directed upward along the hot air guide cavity 11 to the upper part so as to gather heat in the upper part; the outer shell 10 plays the role of heat preservation and guidance for the hot air inside; the upper ends of the first tube body 1 and the second tube body 2 are installed with an upper cover 17, a fifth sealing ring 18 is provided between the upper cover 17 and the first tube body 1, a sixth sealing ring 19 is provided between the upper cover 17 and the second tube body 2, a seventh sealing ring 20 is provided between the upper cover 17 and the first heating tube 3, and an eighth sealing ring 21 is provided between the upper cover 17 and the second heating tube 4 to prevent water leakage; the water inlet 501, the water outlet 2011, the first channel 7, the second channel 8, and the third channel 9 are all provided on the mounting seat 12.

[0032] See Figure 2-Figure 4 The lower part of the second spiral guide channel 6 is connected to the lower part of the first inner cavity 101 through a third channel 9; the third channel 9 extends in a horizontal direction, and the water in the first inner cavity 101 flows downward from the lower part to the third channel 9 for the first 90-degree reversal, and then flows upward from the third channel 9 to the second spiral guide channel 6 for the second 90-degree reversal. After two right-angle reversals, the flow rate of the water discharged from the first inner cavity 101 and entering the second spiral guide channel 6 is reduced, so that the heat exchange is sufficient and the heat exchange efficiency is improved; one end of the third channel 9 is connected to the second buffer cavity 901, and one end of the third channel 9 is connected to the third buffer cavity 902. After the water in the lower part of the first inner cavity 101 flows into the third channel 9, it enters the second buffer cavity 901 and the third buffer cavity 902 for buffering, thereby reducing the water flow rate and making the water flow smooth.

[0033] The heating body assembly of the present invention has a third channel connected to a second buffer chamber at one end and a third buffer chamber at the other end. After the water in the lower part of the first inner chamber flows into the third channel, it enters the second buffer chamber and the third buffer chamber for buffering, thereby reducing the water flow rate and making the water flow smooth. The water flow rate is slower than that of the metal heating tube, so that the heat exchange between the water and the heating tube is more sufficient. The water in the first spiral guide channel and the second spiral guide channel flows from bottom to top, thereby improving the heat exchange efficiency and ensuring a higher water outlet temperature to meet the use requirements. A first channel is connected between the water inlet and the lower part of the first spiral guide channel. The first channel extends in a horizontal direction. The water enters from the water inlet and flows through the first The channel reverses and flows upward into the first spiral guide channel. The water flow direction is reversed at a right angle, which can buffer the water flow velocity and reduce the speed of the water entering the first spiral guide channel, so that the heat exchange is sufficient; a hot air guide cavity is formed on the inside of the outer shell, and the air at the lower part of the outer side of the first heating tube and the second heating tube is heated and then directed upward to the upper part along the hot air guide cavity so as to gather heat in the upper part. The outer shell plays a role in heat preservation and guidance for the hot air inside; the lower part of the second spiral guide channel is connected to the lower part of the first inner cavity by a third channel. After the third channel reverses at two right angles, the flow velocity of the water discharged from the first inner cavity and entering the second spiral guide channel is reduced, so that the heat exchange is sufficient.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A heating element assembly, characterized in that: include: A hollow first tube body (1) and a second tube body (2), wherein a first inner cavity (101) is provided in the vertical direction in the first tube body (1), and a second inner cavity (201) is provided in the vertical direction in the second tube body (2), a first heating tube (3) is provided on the outer side of the first tube body (1), and a second heating tube (4) is provided on the outer side of the second tube body (2), a first spiral guide channel (5) is provided between the first tube body (1) and the first heating tube (3), and the lower part of the first spiral guide channel (5) is provided with a first spiral guide channel (5). A water inlet (501) is connected, and the upper part of the first spiral guide channel (5) is connected to the upper part of the first inner cavity (101); a second spiral guide channel (6) is provided between the second tube body (2) and the second heating tube (4), the lower part of the second spiral guide channel (6) is connected to the lower part of the first inner cavity (101), the upper part of the second spiral guide channel (6) is connected to the upper part of the second inner cavity (201), and the lower part of the second inner cavity (201) is connected to a water outlet (2011).

2. The heating element assembly according to claim 1, wherein: The axial direction of the first tube body (1) and the axial direction of the second tube body (2) are both perpendicular to a horizontal plane; the first spiral guide channel (5) extends spirally along the axial direction of the first tube body (1); and the second spiral guide channel (6) extends spirally along the axial direction of the second tube body (2).

3. The heating element assembly according to claim 1, wherein: The outer wall of the first tube body (1) is provided with a first spiral guide plate (102) protruding from the outer wall thereof, and the first spiral guide channel (5) is formed between the first tube body (1), the first heating tube (3) and the first spiral guide plate (102); the outer wall of the second tube body (2) is provided with a second spiral guide plate (202) protruding from the outer wall thereof, and the second spiral guide channel (6) is formed between the second tube body (2), the second heating tube (4) and the second spiral guide plate (202).

4. The heating element assembly according to claim 1, wherein: A first communicating hole (103) is provided on the upper portion of the first tube body (1), and the upper portion of the first spiral guide channel (5) is connected to the upper portion of the first inner cavity (101) through the first communicating hole (103).

5. The heating element assembly according to claim 1, wherein: A second communicating hole (203) is provided on the upper portion of the second tube body (2), and the upper portion of the second spiral guide channel (6) is connected to the upper portion of the second inner cavity (201) through the second communicating hole (203).

6. The heating element assembly according to claim 1, wherein: A first channel (7) is connected between the water inlet (501) and the lower portion of the first spiral guide channel (5), and the first channel (7) extends in a horizontal direction.

7. The heating element assembly according to claim 1, wherein: The water outlet (2011) is connected to the lower part of the second inner cavity (201) via a second channel (8), and the end of the second channel (8) away from the water outlet (2011) is connected to the first buffer cavity (801).

8. The heating element assembly according to claim 1, wherein: It also includes a hollow outer shell (10), the first heating tube (3) and the second heating tube (4) are both placed inside the outer shell (10), and a hot air guide cavity (11) is formed inside the outer shell (10).

9. The heating element assembly according to any one of claims 1 to 8, wherein: The lower portion of the second spiral guide channel (6) is connected to the lower portion of the first inner cavity (101) via a third channel (9), and the third channel (9) extends in a horizontal direction.

10. The heating element assembly according to claim 9, wherein: One end of the third channel (9) is connected to the second buffer chamber (901), and one end of the third channel (9) is connected to the third buffer chamber (902).

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