Heat exchange system capable of reducing structural vibration noise

Abstract

The present application relates to heat exchange system technical field, provide a kind of heat exchange system of reducing structural vibration noise, comprising: heat exchange component and communication pipeline, heat exchange component includes heat exchange body, heating element and sleeve, heat exchange body has heating cavity, and heat exchange body is equipped with the water inlet and steam outlet that communicate with heating cavity;Heating element is located in heating cavity;At least part of heating element is equipped with sleeve, and sleeve is equipped with through-hole;Communication pipeline includes steam pipeline and water inlet pipeline, steam pipeline is communicated with steam outlet, and water inlet pipeline is communicated with water inlet.The present application is by at least part of the sleeve of the heating element outer periphery setting, the large steam bubble generated on the surface of heating element is broken to form small steam bubble by the through-hole on sleeve, reduce the quantity of large steam bubble in heating cavity, to reduce the vibration noise of heat exchange system.

Description

Technical Field

[0001] This invention relates to the field of heat exchange system technology, and in particular to a heat exchange system that can reduce structural vibration noise. Background Technology

[0002] A heat exchange system is an industrial device that uses electric heating rods to heat the heat exchange medium to generate steam. Traditional heat exchange systems generate strong vibration and noise during operation, affecting the quietness of the process system and even causing structural failure due to long-term mechanical vibration, leading to a decrease in system reliability. Summary of the Invention

[0003] This invention provides a heat exchange system that can reduce structural vibration noise, thereby solving the problem of high operating noise in existing heat exchange systems.

[0004] This invention provides a heat exchange system that can reduce structural vibration noise, comprising: a heat exchange assembly including a heat exchange body, a heating element, and a sleeve; the heat exchange body having a heating cavity, and the heat exchange body having a water inlet and a steam outlet communicating with the heating cavity; the heating element being disposed within the heating cavity; at least a portion of the heating element being fitted with the sleeve, and the sleeve having a through hole; and a connecting pipeline, the connecting pipeline including a steam pipeline and a water inlet pipeline, the steam pipeline communicating with the steam outlet, and the water inlet pipeline communicating with the water inlet.

[0005] According to the present invention, a heat exchange system that can reduce structural vibration noise is provided, wherein a steam ejector is provided on the water inlet pipe, and the steam pipe includes a first outlet and a second outlet. The first outlet is used to communicate with the external environment, and the second outlet is connected to the water inlet pipe through the steam ejector.

[0006] According to the present invention, a heat exchange system that can reduce structural vibration noise is provided, wherein the heat exchange body is provided with a water outlet, the water inlet pipe is provided with a water supply ejector, and the water outlet is connected to the water inlet pipe through the water supply ejector.

[0007] According to the present invention, a heat exchange system that can reduce structural vibration noise is provided, wherein there are multiple sleeves and a gap exists between adjacent sleeves.

[0008] According to the present invention, a heat exchange system for reducing structural vibration noise is provided, wherein there are multiple through holes, and the multiple through holes are spaced apart along the axial direction of the sleeve; and / or, the multiple through holes are spaced apart along the radial direction of the sleeve.

[0009] According to the present invention, a heat exchange system for reducing structural vibration noise is provided, wherein the heat exchange assembly further includes a flow divider disposed within the heating chamber, the flow divider including a plurality of jet holes; the flow divider is connected to the water inlet pipe, and each of the jet holes is used to spray water to flush away bubbles on the surface of the heating element; and / or, the flow divider is connected to the steam pipe, and each of the jet holes is used to spray steam to flush away bubbles on the surface of the heating element.

[0010] According to the present invention, a heat exchange system that can reduce structural vibration noise is provided, wherein the heat exchange assembly further includes a bubble divider disposed in the heating chamber and located above the heating element.

[0011] According to the present invention, a heat exchange system that can reduce structural vibration noise is provided, wherein the heat exchange assembly further includes a stirrer, the stirrer being disposed at the bottom of the heating chamber, and the stirrer including a mechanical stirrer, a magnetic stirrer, and a high-frequency piezoelectric ceramic stirrer.

[0012] According to the present invention, a heat exchange system that can reduce structural vibration noise is provided, wherein the heat exchange assembly further includes an ultrasonic generator disposed on the inner wall surface of the heating chamber.

[0013] According to the present invention, a heat exchange system for reducing structural vibration noise is provided, wherein the heating element includes a plurality of arched heating rods, the two ends of each of the arched heating rods being disposed on the bottom surface of the heating cavity; the heights of the arched heating rods are different, and the plurality of arched heating rods are sequentially nested; and / or, the plurality of arched heating rods are arranged at radial intervals along the heating cavity.

[0014] The heat exchange system provided by the present invention can reduce structural vibration noise by setting a sleeve around at least part of the heating element. Large bubbles generated on the surface of the heating element are broken into small bubbles through the through holes on the sleeve, thereby reducing the number of large bubbles in the heating cavity and thus reducing the vibration noise of the heat exchange system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is one of the structural schematic diagrams of the heat exchange system that can reduce structural vibration noise provided by the present invention;

[0017] Figure 2This is the second schematic diagram of the heat exchange system that can reduce structural vibration noise provided by the present invention;

[0018] Figure 3 This is the third schematic diagram of the heat exchange system that can reduce structural vibration noise provided by the present invention;

[0019] Figure 4 This is a schematic diagram of the sleeve structure provided by the present invention;

[0020] Figure 5 This is a top view of the diversion component provided by the present invention;

[0021] Figure 6 This is a top view of the bubble divider provided by the present invention;

[0022] Figure label:

[0023] 1. Heat exchanger body; 11. Heating chamber; 12. Water inlet; 13. Steam outlet; 14. Water outlet; 2. Heating element; 3. Sheath; 31. Through hole; 4. Bubble divider; 5. Stirrer; 51. Magnetic stirrer; 52. High-frequency piezoelectric ceramic stirrer; 6. Ultrasonic generator; 7. Flow divider; 71. Flow divider ring; 711. Spray hole; 712. Clearance hole; 72. Main inlet pipe; 73. Branch inlet pipe; 81. Steam pipeline; 811. First outlet; 812. Second outlet; 813. Control valve; 814. Check valve; 815. Booster pump; 82. Water inlet pipeline; 821. Steam ejector; 822. Feed water ejector; 823. Feed water pump. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0030] The following is combined Figures 1-6 The present invention describes a heat exchange system that can reduce structural vibration noise.

[0031] This invention provides a heat exchange system that can reduce structural vibration noise, including a heat exchange assembly and connecting pipes. The heat exchange assembly includes a heat exchange body 1, a heating element 2, and a sleeve 3. The heat exchange body 1 has a heating chamber 11, and the heating element 2 is disposed inside the heating chamber. The heat exchange body 1 is provided with a water inlet 12 and a steam outlet 13 communicating with the heating chamber 11. The connecting pipes include a steam pipe 81 and a water inlet pipe 82. The steam pipe 81 is connected to the steam outlet 13 and is used to discharge steam through the steam pipe 81. The water inlet pipe 82 is connected to the water inlet 12, and its two ends are respectively connected to a water source and the water inlet 12. The water inlet pipe 82 is used to transport water from the water source to the heating chamber 11 for heating.

[0032] Furthermore, at least a portion of the heating element 2 is fitted with a sleeve 3. It should be noted that there is a gap between the inner wall surface of the sleeve 3 and the outer wall surface of the heating element 2, i.e., a receiving cavity exists to accommodate bubbles generated on the surface of the heating element 2. The sleeve 3 is provided with a through hole 31, which can be located at the top, bottom, and outer wall surface of the receiving cavity. In one embodiment, the sleeve 3 is fitted over the entire heating element 2. In another embodiment, the sleeve 3 is fitted over the top of the heating element 2. The connection method between the sleeve 3 and the heating element 2 in this embodiment of the invention is not specifically limited.

[0033] It should be noted that the surface temperature of heating element 2 is high, and the boiling bubbles absorb heat at a high rate on the surface of heating element 2, thus rapidly growing and converging to form large bubbles. These large bubbles are discharged outward through the through-hole 31 on the sleeve 3. During this process, large bubbles (bubbles larger than the through-hole 31) are broken up by the through-hole 31 into smaller bubbles of similar size, thereby significantly reducing the number of large bubbles in the heating chamber 11. Understandably, compared to large bubbles, the vibration energy and amplitude generated by the breaking of small bubbles are lower, thus reducing the vibration noise from bubble breakage in the heat exchange system and improving the stability of the structure.

[0034] The heat exchange system provided in this embodiment of the invention can reduce structural vibration noise by providing a sleeve 3 around at least part of the heating element 2. Large bubbles generated on the surface of the heating element 2 are broken into small bubbles through the through holes 31 on the sleeve 3, thereby reducing the number of large bubbles in the heating chamber 11 and thus reducing the vibration noise of the heat exchange system.

[0035] Traditional heat exchange components also suffer from localized undercooling and uneven heating, which affects heating efficiency and generates additional noise. Therefore, in one embodiment of the present invention, as... Figure 1 As shown, a steam ejector 821 is provided on the water inlet pipe 82. The steam pipe 81 includes a first outlet 811 and a second outlet 812. The first outlet 811 is used to communicate with the external environment, and the second outlet 812 is connected to the water inlet pipe 82 through the steam ejector 821.

[0036] Specifically, the steam ejector 821 includes a jet pipe and a guide pipe. The jet pipe is a high-temperature, high-pressure steam channel, and the guide pipe is a water supply channel. The second outlet 812 is connected to the jet pipe, and the guide pipe is connected to the water source. The high-temperature steam and the incoming water mix and heat up inside the steam ejector 821, and then are pumped into the heating chamber 11 through the inlet 12 by the water supply pump 823 on the water supply pipe 82. In this way, the steam jet ejects the water supply, and the steam and water are strongly sheared and mixed inside the steam ejector 821, which can heat the water supply, increase the water supply temperature, thereby improving the uniformity of water temperature, avoiding local overcooling, and reducing noise.

[0037] In yet another embodiment provided by the present invention, such as Figure 2 As shown, the heat exchanger body 1 is provided with an outlet 14, and the water inlet pipe 82 is provided with a water supply ejector 822. The outlet 14 is connected to the water inlet pipe 82 through the water supply ejector 822.

[0038] Specifically, the water ejector 822 includes a jet pipe and a drain pipe. The jet pipe serves as the water supply channel, and the drain pipe serves as the water channel. The outlet 14 is connected to the drain pipe, and the jet pipe is connected to a water source. A water pump 823 is also installed between the jet pipe and the water source. By ejecting water through the water jet, the water supply and the water source undergo intense shear mixing within the water ejector 822, which heats the water, increases its temperature, improves the uniformity of water temperature, prevents localized overcooling, and reduces noise.

[0039] In this embodiment of the invention, the steam pipeline 81 is further provided with a control valve 813, which is used to control the on / off state of the steam pipeline 81. Figure 1 As shown, control valve 813 can control the connection and disconnection between steam pipeline 81 and steam ejector 821.

[0040] In one optional embodiment, there are multiple sleeves 3, with a gap between adjacent sleeves 3. During the upward movement of bubbles generated between adjacent sleeves 3, larger bubbles (larger than the gap between the inner wall of the sleeve 3 and the outer wall of the heating element 2) enter the receiving cavity formed by the sleeve 3 and the heating element 2, undergoing a first breakage during entry. The broken bubbles are discharged outward through the through-holes 31 on the sleeve 3. During this process, the bubbles are broken by the through-holes 31 into smaller bubbles of similar size. Compared to directly breaking large bubbles, in this embodiment of the invention, the bubbles generated between adjacent sleeves 3 undergo two breakages to form smaller bubbles, resulting in lower vibration energy and amplitude, thereby reducing the vibration noise of the heat exchange assembly.

[0041] In one embodiment, there are multiple through holes 31 on the sleeve 3, and the multiple through holes 31 are arranged at intervals along the circumference of the sleeve 3. During the process of rising, the bubbles can be broken and discharged through any of the through holes 31; multiple large bubbles can also be broken at the same time, improving the breaking efficiency and accelerating the reduction of the number of large bubbles in the heating chamber 11.

[0042] In another embodiment, there are multiple through holes 31 on the sleeve 3, and the multiple through holes 31 are arranged at intervals along the radial direction of the sleeve 3. Since the movement of the bubbles is irregular, the present invention provides multiple through holes 31 on the same plane of the sleeve 3, which can simultaneously break up multiple large bubbles in the heating chamber 11.

[0043] In one alternative embodiment, such as Figure 4 As shown, multiple through holes 31 are arranged at radial intervals along the sleeve 3 to form a through hole group. The sleeve 3 is provided with multiple through hole groups, which are arranged at axial intervals along the sleeve 3. Large air bubbles in the containment cavity can be broken and discharged through any of the through holes 31 during the upward floating process.

[0044] In another embodiment, there are multiple through holes 31 on the sleeve 3, and the multiple through holes 31 are spirally distributed along the axis of the sleeve 3, with adjacent through holes 31 being staggered.

[0045] In this embodiment of the invention, the size of the through hole 31 on the sleeve 3 can be the same or different.

[0046] The heat exchange assembly provided in this embodiment of the invention further includes a flow divider 7, which is disposed in the heating chamber 11. The flow divider 7 includes a plurality of jet holes 711. The flow divider 7 is connected to the water inlet pipe 82, and each jet hole 711 is used to spray water to flush away the bubbles on the surface of the heating element 2. And / or, the flow divider 7 is connected to the steam pipe 81, and each jet hole 711 is used to spray steam to flush away the bubbles on the surface of the heating element 2.

[0047] It should be noted that the nozzle 711 sprays water or steam. The sprayed water or steam causes strong convection on the surface of the heating element 2, which can dislodge small bubbles generated by heat absorption on the surface of the heating element 2, thereby preventing the small bubbles from continuing to grow and reducing their size. Compared to the breakup of large bubbles, the vibration amplitude and energy generated by the breakup of small bubbles are significantly reduced, thus reducing the vibration noise caused by bubble breakup in the heat exchange system. Furthermore, the diverter 7 can be configured as one or more, and can spray water or steam; this invention does not limit this.

[0048] It should be noted that if the diverter 7 is connected to the water inlet pipe 82, the diverter 7 can be connected to the water inlet pipe 82 through the water inlet 12, or it can be directly connected to the water inlet pipe 82 through other pipes. If the diverter 7 is connected to the steam pipe 81, the steam pipe 81 may also include a third outlet, which is connected to the diverter 7 to supply steam to the diverter 7.

[0049] It should be noted that in the above embodiment, the outlet end of the water ejector 822 is connected to the inlet 12. If the diverter 7 is connected to the inlet pipe 82, the diverter 7 can be connected to the water ejector 822 through the inlet 12, or it can be directly connected to the water ejector 822 through other pipes. If the diverter 7 is connected to the steam pipe 81, the steam pipe 81 includes a first outlet 811 and a second outlet 812. The first outlet 811 is connected to the external environment, and the second outlet 812 is connected to the diverter 7 to provide steam to the diverter 7.

[0050] In one embodiment provided by the present invention, such as Figure 3 As shown, the steam pipeline 81 includes a first outlet 811 and a second outlet 812. The second outlet 812 is connected to each jet hole 711. A check valve 814 and a booster pump 815 are also provided between the second outlet 812 and the jet hole 711. This can increase the steam pressure, making the steam ejected from the jet hole 711 more powerful and improving the effect of flushing away bubbles.

[0051] like Figure 5 As shown, the flow divider 7 includes multiple nested flow divider rings 71. Each flow divider ring 71 has multiple spray holes 711 on one side and a flow divider hole on the other side, which is used to communicate with the water inlet 12 or the steam outlet 13. It should be noted that by setting multiple nested flow divider rings 71, multiple water spray rings / steam spray rings are formed outward along the axis of the heat exchanger body 1, making the water / steam spray more uniform. On the one hand, it is less likely to cause drastic changes in the flow field; on the other hand, regardless of the shape and structure of the heating element 2 or its position, the small bubbles generated on it can be swept away by the strong convection generated by the water / steam spray from the flow divider rings 71. Of course, gaps can also be formed between the flow divider rings 71, which can facilitate the placement of the heating element 2 without causing installation interference.

[0052] Further, the diverter 7 includes a main inlet pipe 72 and multiple branch inlet pipes 73 connected to the main inlet pipe 72. The main inlet pipe 72 is connected to the water inlet 12 or the steam outlet 13, and each branch inlet pipe 73 is used to connect to the branching holes of one or more diverter rings 71. In an optional embodiment, when the diverter 7 is used for water spraying, the main inlet pipe 72 can be directly connected to the water inlet 12, that is, all the water is sprayed out only through the diverter 7. In other optional embodiments, the water inlet 12 is provided with two pipes, one pipe for normally supplying water into the heating chamber 11, and the other pipe connected to the main inlet pipe 72 for spraying water. When the diverter 7 is used for steam spraying, the steam pipe 81 may include multiple outlets, one of which can be connected to the main inlet pipe 72. Further, each branch inlet pipe 73 can be connected to the branching hole of one diverter ring 71, or connected to the branching holes of multiple diverter rings 71, and the present invention is not limited thereto.

[0053] In one embodiment of the present invention, the branch inlet pipes 73 are radially distributed, and each branch inlet pipe 73 has multiple inlet holes, each inlet hole communicating sequentially with the branch holes of each branch ring 71. In an optional embodiment, a sleeve 3 can be provided in either the inlet hole or the branch hole, so that the branch inlet pipe 73 and the branch ring 71 can be both installed and connected while maintaining communication. With this configuration, each branch ring 71 has multiple branch holes, and each branch ring 71 can be supplied with water / steam through multiple branch inlet pipes 73. On the one hand, this ensures sufficient water / steam supply, thereby ensuring the water / steam spray pressure to improve the flushing effect on the steam bubbles. On the other hand, it also makes the structure of the branch component 7 more regular, eliminating the need for many dispersed pipes in the heating chamber 11. The entire branch component 7 forms a regular umbrella-shaped structure, which is convenient for installation and the arrangement of other structures.

[0054] Further, in an optional embodiment, the inlet pipes 73 are radially distributed in the horizontal direction, and the flow-dividing rings 71 are distributed on the same plane, that is, the entire flow-dividing component 7 is planar, and in an optional embodiment, it is circular. In another optional embodiment, the inlet pipes 73 are radially distributed in the vertical direction, and the flow-dividing rings 71 are distributed on different planes, that is, the entire flow-dividing component 7 is three-dimensional, and in an optional embodiment, it is conical.

[0055] It is important to note that, to ensure the effectiveness of the water / steam spraying and to effectively remove small bubbles from the surface of the heating element 2, the water / steam spraying path can be configured to face the heating element 2, with each spray hole 711 having a different extension direction. In other embodiments, the water / steam spraying path can also be configured to be parallel to the extension direction of the heating element 2, with each spray hole 711 having a parallel spraying path. Assuming that the heating element 2 extends along the axial direction of the heat exchanger body 1, and the water / steam spraying path also extends along the axial direction of the heat exchanger body 1, the water / steam spraying can form a flow field along the axial direction of the heat exchanger body 1, which can efficiently flush away small bubbles on the heating element 2, improving the efficiency of bubble flushing.

[0056] Furthermore, in order to facilitate the installation of the heating element 2, a clearance hole 712 is formed between the flow inlet pipe 73 and the flow ring 71, and the heating element 2 extends along the axial direction of the heat exchange body 1 and passes through the clearance hole 712.

[0057] In another embodiment of the present invention, the flow divider 7 includes a spiral flow divider tube extending axially along the heat exchanger body 1, and a plurality of spray holes 711 spaced apart on the spiral flow divider tube. Compared with the arrangement of the flow divider ring 71, the spiral flow divider tube rises spirally, which on the one hand can spray water / steam to flush the bubbles on the surface of the heating element 2, and on the other hand, if water is sprayed from the spiral flow divider tube, the temperature of the water can also be increased as it rises spirally, further preventing uneven water temperature inside the heat exchanger body 1 and the problem of excessive noise caused by overcooling; if steam is sprayed from the spiral flow divider tube, the water temperature can also be further increased, improving the heating effect.

[0058] It should be noted that while the flow field formed by the spiral distributor is not perfectly uniform, its effect on flushing bubbles is not as ideal as that of the distributor ring 71. However, it can heat the incoming water or prevent it from becoming too cold, and it can also further help reduce noise. The first end of the spiral distributor can be connected to the water inlet 12 or the steam outlet 13. Furthermore, the heating element 2 extends along the axial direction of the heat exchange body 1, and the spiral distributor is sleeved outside the heating element 2; the two are installed without interference.

[0059] Furthermore, to further reduce bubble breakage noise, the heat exchange assembly provided in this embodiment of the invention also includes a bubble divider 4, which is disposed within the heating chamber 11 and located above the heating element 2. In an optional embodiment, the bubble divider 4 includes a bubble divider plate with a fine grid structure, such as... Figure 6 As shown, the large bubbles generated by boiling water are broken into numerous tiny bubbles by passing through a fine grid structure. These tiny bubbles continue to rise to the surface and break apart, thus releasing the steam.

[0060] In this embodiment of the invention, there may be multiple bubble dividers 4, which are spaced apart above the heating element 2 along the height direction of the heating chamber 11. In order to reduce the volume of the bubbles and further reduce noise, the multiple bubble dividers 4 have different division densities. The division density (such as the density of a grid) gradually increases from the bottom to the top of the heating chamber 11. The bubbles are cut multiple times, and their volume gradually decreases, resulting in less noise from breaking on the water surface.

[0061] In one specific embodiment, a first bubble divider and a second bubble divider are arranged above the heating element 2. The first bubble divider is located above the second bubble divider. The density of the fine grid structure on the first bubble divider is greater than the density of the fine grid structure on the second bubble divider. The bubbles are cut by the first bubble divider and then by the second bubble divider. The volume of the bubbles after the two cuts is small.

[0062] The heat exchange assembly provided in this embodiment of the invention also includes a stirrer 5, which is located at the bottom of the heating chamber 11.

[0063] In one embodiment, the stirrer 5 is a mechanical stirrer, which includes an axial or mixed-flow rotating impeller disposed at the bottom of the heating chamber 11 and a drive shaft connected to the impeller. The impeller rotates continuously under the action of a prime mover (such as an electric motor) and driven by the drive shaft. After the impeller rotates, it generates an upward and centrifugal force on the water, forcing convective heat exchange between the water and the heating element 2, thereby reducing the surface temperature of the heating element 2.

[0064] In another embodiment, such as Figure 2 As shown, the stirrer 5 is a magnetic stirrer 51, which includes an axial or mixed-flow rotating impeller and a magnetic actuator located at the bottom of the heating chamber 11. The impeller rotates continuously under the drive of the magnetic field. After the impeller rotates, it generates an upward and centrifugal force on the water, forcing convective heat exchange between the water and the heating element 2, reducing the surface temperature of the heating element 2, and making the water temperature more uniform.

[0065] In yet another embodiment, such as Figure 3 As shown, the stirrer 5 is a high-frequency piezoelectric ceramic swivel 52. The high-frequency piezoelectric ceramic swivel 52 is a strip array made of piezoelectric ceramic as the base material. When the external power is turned on, each strip of the high-frequency piezoelectric ceramic swivel 52 will oscillate at high frequency under the action of piezoelectric effect, drive the water to move rapidly, enhance the convective heat transfer coefficient between the water and the heating element 2, reduce the surface temperature of the heating element 2, and make the water temperature more uniform.

[0066] In this embodiment of the invention, by installing a stirrer 5 at the bottom of the heating chamber 11, the surface temperature of the heating element 2 can be reduced, decreasing the generation of bubbles. Furthermore, by driving water movement, the bubbles on the surface of the heating element 2 can be further flushed away, thereby helping to reduce noise within the heat exchange assembly. Additionally, it can drive water flow for heat exchange, resulting in more uniform water temperature and improving the heating efficiency of the heat exchange assembly. The addition of the stirrer 5 both helps reduce noise and improves the heating efficiency of the heat exchange assembly.

[0067] Compared to the breaking of large bubbles on the water surface, this embodiment of the invention sets at least one of a bubble divider 4 and a stirrer 5 to break large bubbles into smaller bubbles. Since the volume of the smaller bubbles is greatly reduced, the vibration energy and amplitude generated after their breakage are also greatly reduced. The breaking frequency will shift to a higher frequency as the number of smaller bubbles increases. The high-frequency oscillation will attenuate rapidly during propagation, and the energy transmitted outward after passing through the water and the inner wall of the heating chamber 11 will also be greatly reduced, thereby significantly reducing the overall vibration noise of the equipment and playing a role in vibration reduction and noise reduction.

[0068] The heat exchange assembly provided in this embodiment of the invention further includes an ultrasonic generator 6, which is disposed on the inner wall surface of the heating chamber 11. Figure 1 and Figure 2 As shown, the ultrasonic generator 6 is positioned above the heating element 2. Through high-frequency ultrasonic vibration, it breaks down the large bubbles generated by boiling water into numerous tiny bubbles. These tiny bubbles continue to rise to the water surface and break apart, releasing the steam. It should be noted that since the ultrasonic generator 6 also generates high-frequency vibrations, its energy is significantly attenuated over short distances or on the inner wall of the heating cavity 11, thus not affecting its own vibration level. The number of ultrasonic generators 6 in this embodiment is not specifically limited; one or more rings of ultrasonic generators 6 can be arranged along the inner wall of the heating cavity 11.

[0069] In this embodiment of the invention, the heating element 2 can be a heating rod, heating wire, or other heating device, and this embodiment of the invention does not limit it.

[0070] In one specific implementation, the heating element 2 includes an arched heating rod with both ends located on the bottom surface of the heating cavity 11. Compared to a long, narrow heating rod, this increases the contact area with water and improves heating efficiency. Specifically, the arched heating rod includes a first vertical section, a second vertical section, and an arc-shaped section. The first and second vertical sections are located at the bottom of the heating cavity 11, and both ends of the arc-shaped section are connected to the tops of the first and second vertical sections, respectively. The opening of the arc-shaped section faces downwards. Figure 1 and Figure 3 As shown.

[0071] Furthermore, in an optional embodiment, the heating element 2 includes multiple arched heating rods, each with a different height. These multiple arched heating rods are sequentially nested, allowing simultaneous heating of water at different heights and improving the heating speed. In an optional embodiment, the multiple arched heating rods are arranged radially at intervals along the heating cavity 11. The arrangement of the arched heating rods in this embodiment is not specifically limited and can be configured according to actual working conditions.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat exchange system capable of reducing structural vibration noise, characterized in that, include: A heat exchange assembly includes a heat exchange body, a heating element, and a sleeve. The heat exchange body has a heating cavity and is provided with a water inlet and a steam outlet communicating with the heating cavity. The heating element is disposed inside the heating cavity. At least a portion of the heating element is fitted with the sleeve, and the sleeve is provided with a through hole. The connecting pipeline includes a steam pipeline and a water inlet pipeline, wherein the steam pipeline is connected to the steam outlet and the water inlet pipeline is connected to the water inlet. There are multiple sleeves, and there is a gap between two adjacent sleeves.

2. The heat exchange system for reducing structural vibration noise according to claim 1, characterized in that, The water inlet pipe is equipped with a steam ejector, and the steam pipe includes a first outlet and a second outlet. The first outlet is used to connect with the external environment, and the second outlet is connected to the water inlet pipe through the steam ejector.

3. The heat exchange system for reducing structural vibration noise according to claim 1, characterized in that, The heat exchanger body is provided with a water outlet, and the water inlet pipe is provided with a water feed ejector. The water outlet is connected to the water inlet pipe through the water feed ejector.

4. The heat exchange system for reducing structural vibration noise according to any one of claims 1 to 3, characterized in that, The through holes are multiple, and the multiple through holes are spaced apart along the axial direction of the sleeve; and / or, the multiple through holes are spaced apart along the radial direction of the sleeve.

5. The heat exchange system for reducing structural vibration noise according to claim 1, characterized in that, The heat exchange assembly further includes a flow divider, which is disposed inside the heating chamber and includes a plurality of jet holes; The diverter is connected to the water inlet pipe, and each of the spray holes is used to spray water to flush away the bubbles on the surface of the heating element. And / or, the diverter is connected to the steam pipeline, and each of the jet holes is used to inject steam to flush away the bubbles on the surface of the heating element.

6. The heat exchange system for reducing structural vibration noise according to claim 1, characterized in that, The heat exchange assembly also includes a bubble divider, which is disposed inside the heating chamber and located above the heating element.

7. The heat exchange system for reducing structural vibration noise according to claim 1, characterized in that, The heat exchange assembly also includes a stirrer, which is located at the bottom of the heating chamber. The stirrer includes a mechanical stirrer, a magnetic stirrer, and a high-frequency piezoelectric ceramic stirrer.

8. The heat exchange system for reducing structural vibration noise according to claim 1, characterized in that, The heat exchange assembly also includes an ultrasonic generator, which is disposed on the inner wall surface of the heating chamber.

9. The heat exchange system for reducing structural vibration noise according to claim 1, characterized in that, The heating element includes multiple arched heating rods, with both ends of each arched heating rod located on the bottom surface of the heating cavity; the heights of each arched heating rod are different, and the multiple arched heating rods are sequentially nested; and / or, the multiple arched heating rods are arranged at radial intervals along the heating cavity.

Images