Modularized intelligent heat exchange unit convenient to maintain

Abstract

The invention relates to the technical field of heat exchangers, in particular to a modular intelligent heat exchange unit convenient to maintain. The technical problem that heat exchange efficiency is reduced due to accumulation of incrustation in a heat exchanger is solved. According to the technical scheme, the device comprises a front shell, a plurality of supporting rods, a rear shell, limiting frames and the like, the supporting rods are distributed on the rear side of the front shell in a mirror image mode, the rear shell is fixedly arranged at one ends of the supporting rods, and the two limiting frames are vertically distributed and fixedly arranged on the front shell and the rear shell. Through the arrangement of the sawtooth outer disc, the temperature sensing coil spring and the sawtooth inner disc, cold water cannot fully absorb the temperature of hot water due to the existence of scale, the temperature of the hot water is high, the temperature sensing coil spring is subjected to temperature sensing deformation to drive the sawtooth inner disc to rotate in the sawtooth outer disc, and therefore the sawtooth inner disc and the sawtooth outer disc extrude a first heat exchange plate and a second heat exchange plate to deform; the scale difficult to deform is separated from the first heat exchange plate and the second heat exchange plate, and the heat exchange effect of the first heat exchange plate and the second heat exchange plate is improved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and in particular to a modular intelligent heat exchanger unit that is easy to maintain. Background Technology

[0002] Heat exchange units typically consist of heat exchangers, temperature control valve groups, steam trap groups (when the heat medium is steam), circulating pumps, electrical control cabinets, bases, pipelines, valves, instruments, etc., and are used to exchange heat to cold water. However, during long-term operation of heat exchange units, calcium and magnesium ions in the circulating water precipitate out upon heating, forming scale, which gradually deposits in the heat exchanger. The thermal conductivity of scale is much lower than that of metal materials, and its accumulation will significantly reduce heat exchange efficiency, leading to increased unit energy consumption, output temperature fluctuations, and even local overheating that damages the equipment. To address this, a modular intelligent heat exchange unit that can automatically remove scale and is easy to maintain is provided to solve the problem of scale accumulation in heat exchangers reducing heat exchange efficiency. Summary of the Invention

[0003] To overcome the drawback of scale buildup in heat exchangers reducing heat exchange efficiency, we offer modular intelligent heat exchange units that are easy to maintain and can automatically remove scale.

[0004] The technical solution is as follows: A modular intelligent heat exchanger unit that is easy to maintain, comprising: Front shell; Support rods, there are several support rods and they are distributed in a mirror image on the rear side of the front shell; The rear outer shell is fixedly mounted on one end of the support rod; It also includes: There are two limit frames, which are fixedly installed on the front and rear outer shells, one above the other. The heat exchange unit is mounted on the limiting frame, and the front side of the heat exchange unit contacts the front outer shell. The front outer shell has a cold water inlet, a cold water outlet, a hot water inlet, and a hot water outlet. The cold water inlet, cold water outlet, hot water inlet, and hot water outlet are all connected to the heat exchange unit. The rear side of the heat exchange unit contacts the rear outer shell. It is used to transfer the heat of the hot water to the cold water through the heat exchange unit to increase the temperature of the cold water. The first descaling unit, which consists of several units and is located inside the heat exchange unit, is used to remove scale adhering to the heat exchange unit. The second descaling unit is connected to the cold water inlet of the front shell. The second descaling unit automatically adjusts the flow rate of cold water entering the heat exchange unit to remove the scale generated in the heat exchange unit. The collection unit is connected to the cold water outlet of the front housing and is used to collect the scale removed from the heat exchange unit.

[0005] Preferably, the heat exchange unit includes: The first heat exchange plate, there are several first heat exchange plates, and each of them has a first slot for positioning at the top and bottom. The first heat exchange plate is engaged with the limiting frame through the first slot. The second heat exchange plate has several of them, and each of them has a second slot for positioning. The second heat exchange plate is engaged with the limiting frame through the second slot. The first heat exchange plate and the second heat exchange plate are arranged alternately. The sealing frame has positioning grooves on both the first and second heat exchange plates. The sealing frame is located in the positioning grooves of the first and second heat exchange plates, so that a water supply channel is formed between the first and second heat exchange plates.

[0006] Preferably, the sealing frame has a trapezoidal cross-section on one side that contacts the positioning grooves of the first and second heat exchange plates, and a triangular cross-section on the other side. The trapezoidal cross-section of the sealing frame allows it to be used to position the positioning grooves of the first and second heat exchange plates, while the triangular cross-section allows it to deform when it presses against the first and second heat exchange plates, thus sealing the gap between them.

[0007] Preferably, the heat exchange unit also includes: Both the first heat exchange plate and the second heat exchange plate are provided with Y-shaped grooves. The concave surfaces of the Y-shaped grooves on the first heat exchange plate and the second heat exchange plate face opposite directions. The lower end of the Y-shaped groove is shallower and the upper end is deeper, so that the Y-shaped grooves are used to guide the water flow between the first heat exchange plate and the second heat exchange plate.

[0008] Preferably, the first descaling unit includes: The serrated outer plate is located behind the second heat exchange plate and is fixedly installed on the front side of the adjacent first heat exchange plate. A temperature-sensing coil spring, one end of which is fixedly mounted on one side of the serrated outer disc; The serrated inner disc is fixedly connected to the other end of the temperature-sensing coil spring. The serrated inner disc is located in front of the first heat exchange plate and is rotatably connected to the rear side of the adjacent second heat exchange plate. The serrated inner disc is sealed inside the serrated outer disc, and the serrations of the serrated inner disc are movably connected to the serrations of the serrated outer disc.

[0009] Preferably, the second descaling unit includes: The first outer casing is fixedly installed at the cold water inlet of the front outer casing; The support frame is fixedly installed inside the first outer casing; A sliding plug, which is sealed and slidably mounted on a support frame; The elastic sleeve has its front end fixedly mounted on the sliding plug and its rear end fixedly mounted on the support frame, so that a sealed air cavity is formed between the support frame, the sliding plug and the elastic sleeve. The air cavity is filled with pressurized air, and the sliding plug can be reset under air pressure. The limiting ring is fixedly installed inside the first housing. The limiting ring has conical holes at both ends for guiding water flow, and the conical hole at the rear end of the limiting ring is in contact with the sliding plug.

[0010] Preferably, the second descaling unit also includes: Leaf-shaped plates, a number of which are circumferentially distributed and fixedly disposed inside the first outer shell; A rotating ring is rotatably disposed inside the first housing. The rotating ring contacts the leaf-shaped plate and is movably connected to the sliding plug.

[0011] Preferably, the rotating ring has several inclined through holes for rotating under the influence of water flow.

[0012] Preferably, the collection unit includes: The second outer casing is fixedly installed at the cold water outlet of the front outer casing; A conical filter funnel is fixedly installed inside the second housing, with the tip of the conical filter funnel facing the cold water outlet of the front housing.

[0013] Preferably, the filter holes of the conical filter funnel are spiral-shaped, so that when the water flows through the conical filter funnel, a spiral water flow is generated, thereby guiding the scale that moves to the conical filter funnel to move along the water flow and to the bottom of the second shell by the centrifugal force of the water flow.

[0014] The beneficial effects of this invention are: 1. This application, by setting a serrated outer disc, a temperature-sensing coil spring, and a serrated inner disc, addresses the issue that the presence of scale prevents cold water from fully absorbing the temperature of hot water, resulting in a higher hot water temperature. The temperature-sensing coil spring deforms upon sensing temperature, causing the serrated inner disc to rotate within the serrated outer disc. This causes the serrated inner disc and the serrated outer disc to compress and deform the first and second heat exchange plates, allowing the difficult-to-deform scale to detach from the first and second heat exchange plates, thereby improving the heat exchange efficiency of the first and second heat exchange plates.

[0015] 2. By setting up a blade-shaped plate and a rotating ring, scale blockage will drive an increase in the flow rate of cold water at the rotating ring. When the cold water passes through the through hole of the rotating ring, it will squeeze the through hole of the rotating ring and drive the rotating ring to rotate. The flow velocity of the cold water changes periodically under the obstruction of the blade-shaped plate, so that the cold water forms turbulence when flowing in the heat exchange unit. The turbulence impacts the scale on the first heat exchange plate and the second heat exchange plate, causing the scale to be peeled off, thereby ensuring the heat exchange effect of the first heat exchange plate and the second heat exchange plate.

[0016] 3. This application utilizes Y-shaped grooves. As cold water flows upwards, the raised surfaces of the grooves guide its flow, increasing the residence time within the cold water channel. This allows the cold water to fully absorb heat from the hot water. Furthermore, when the cold water is between the raised surfaces of the two Y-shaped grooves, its volume decreases, reducing the amount of heat required for heating and thus enabling more efficient temperature increases. Conversely, as hot water flows downwards, the concave surfaces of the Y-shaped grooves guide its flow, resulting in a larger volume and greater heat output at the grooves. The heat transferred from the hot water to the cold water remains at a relatively high temperature, enhancing the continuous heat transfer effect during the flow. The downward flow of hot water gradually reduces its cross-sectional area and increases its velocity. The hot water at the Y-shaped grooves mixes with the surrounding hot water, ensuring uniform temperature and preventing localized low temperatures that could lead to low thermal conductivity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the first heat exchange plate and the second heat exchange plate of the present invention; Figure 4 This is a cross-sectional schematic diagram of the first heat exchange plate of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A; Figure 6 This is a schematic diagram of water flow at the first and second heat exchange plates of the present invention. Figure 7 This is a cross-sectional schematic diagram of the first descaling unit of the present invention; Figure 8 This is a cross-sectional schematic diagram of the sliding plug of the present invention; Figure 9 This is a cross-sectional schematic diagram of the first outer shell of the present invention; Figure 10 This is an exploded view of the sliding plug, elastic sleeve, and limiting ring of the present invention; Figure 11 This is a cross-sectional schematic diagram of the first outer shell of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1_Front outer shell, 101_Cold water inlet, 102_Cold water outlet, 103_Hot water inlet, 104_Hot water outlet, 2_Support rod, 3_Rear outer shell, 4_Limiting frame, 5_Heat exchange unit, 501_First heat exchange plate, 502_Second heat exchange plate, 503_Sealing frame, 504_Y-shaped groove, 6_First descaling unit, 601_Serrated outer disc, 602_Temperature-sensing coil spring, 603_Serrated inner disc, 7_Second descaling unit, 701_First outer shell, 702_Supporting frame, 703_Sliding plug, 704_Elastic sleeve, 705_Limiting ring, 706_Leaf-shaped plate, 707_Rotating ring, 8_Collection unit, 801_Second outer shell, 8011_Release end, 8012_Collection port, 802_Conical filter funnel. Detailed Implementation

[0019] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0020] A modular intelligent heat exchanger unit that is easy to maintain, such as Figures 1-2 and Figure 4 As shown, it includes: Front shell 1; Support rod 2, there are several support rods 2 and they are distributed in a mirror image on the rear side of the front shell 1; Rear outer shell 3, the rear outer shell 3 is fixedly installed at one end of the support rod 2; There are two limit frames 4, which are fixedly installed on the front shell 1 and the rear shell 3, one above the other. Heat exchange unit 5 is mounted on limit frame 4, and the front side of heat exchange unit 5 contacts the front outer shell 1. The front outer shell 1 has a cold water inlet 101, a cold water outlet 102, a hot water inlet 103, and a hot water outlet 104. The cold water inlet 101, cold water outlet 102, hot water inlet 103, and hot water outlet 104 are all connected to heat exchange unit 5. The rear side of heat exchange unit 5 contacts the rear outer shell 3, and is used to transfer the heat of hot water to cold water through heat exchange unit 5 to increase the temperature of cold water. The first descaling unit 6, which has a plurality of units and is disposed inside the heat exchange unit 5, is used to remove scale adhering to the heat exchange unit 5. The second descaling unit 7 is connected to the cold water inlet 101 of the front shell 1. The second descaling unit 7 automatically adjusts the flow rate of cold water entering the heat exchange unit 5 to remove the scale generated in the heat exchange unit 5. Collection unit 8 is connected to the cold water outlet 102 of the front housing 1 and is used to collect the scale removed from the heat exchange unit 5 to prevent scale from clogging the equipment.

[0021] like Figures 3-4 As shown, the heat exchange unit 5 includes: The first heat exchange plate 501, there are several first heat exchange plates 501, and the top and bottom are provided with first slots for positioning. The first heat exchange plate 501 is engaged and set at the limiting frame 4 through the first slots. The second heat exchange plate 502 has several units, and each unit has a second slot for positioning. The second heat exchange plate 502 is engaged with the limiting frame 4 through the second slot. The first heat exchange plate 501 and the second heat exchange plate 502 are arranged alternately. Both the first heat exchange plate 501 and the second heat exchange plate 502 are thin metal parts with anti-corrosion treatment after stamping. The sealing frame 503 mainly consists of a rounded rectangular sealing frame and two sealing rings. The sealing rings are located at opposite corners of the rounded rectangular sealing frame. The rounded rectangular sealing frame and the sealing rings are connected by a short sealing strip. Both the first heat exchange plate 501 and the second heat exchange plate 502 are provided with positioning grooves. The sealing frame 503 is located within the positioning grooves of the first heat exchange plate 501 and the second heat exchange plate 502. The rounded rectangular sealing frame of the sealing frame 503 seals the gap between the rectangular edges of the first heat exchange plate 501 and the second heat exchange plate 502. This creates a channel for water to flow vertically between the first heat exchange plate 501 and the second heat exchange plate 502. The sealing ring of the sealing frame 503 seals the gap at the circular edge between the first heat exchange plate 501 and the second heat exchange plate 502, creating a channel for water to flow only forward and backward. The sealing rings of two adjacent sealing frames 503 are positioned at different diagonal points, creating alternating cold and hot water channels between several first heat exchange plates 501 and several rear second heat exchange plates 502. Specifically, as shown... Figure 6 As shown, the first heat exchange plate 501 and the adjacent second heat exchange plate 502 on the rear side form a channel for cold water flow, and the second heat exchange plate 502 and the adjacent first heat exchange plate 501 on the rear side form a channel for hot water flow. The first descaling unit 6 is located in the hot water channel to prevent scale formed in the cold water channel from interfering with the normal operation of the first descaling unit 6.

[0022] The sealing frame 503 has a trapezoidal cross-section on one side that contacts the positioning grooves of the first heat exchange plate 501 and the second heat exchange plate 502, and a triangular cross-section on the other side. The trapezoidal cross-section of the sealing frame 503 enables it to position the positioning grooves of the first heat exchange plate 501 and the second heat exchange plate 502. The triangular cross-section of the sealing frame 503 increases the deformation contact area and pressure when it presses the first heat exchange plate 501 and the second heat exchange plate 502, thereby increasing the sealing effect of the sealing frame 503 between the first heat exchange plate 501 and the second heat exchange plate 502.

[0023] like Figure 5 As shown, the heat exchange unit 5 also includes: Both the first heat exchange plate 501 and the second heat exchange plate 502 are provided with Y-shaped grooves 504. The concave surface of the Y-shaped groove 504 of the first heat exchange plate 501 and the concave surface of the Y-shaped groove 504 of the second heat exchange plate 502 face opposite directions. The lower end of the Y-shaped groove 504 is shallower and the upper end is deeper, so that the Y-shaped groove 504 can effectively guide the water flow between the first heat exchange plate 501 and the second heat exchange plate 502.

[0024] like Figure 7 As shown, the first descaling unit 6 includes: The serrated outer plate 601 is located behind the second heat exchange plate 502 and is fixedly disposed in front of the adjacent first heat exchange plate 501. Temperature-sensing coil spring 602, one end of which is fixedly mounted on one side of the serrated outer disk 601; The serrated inner disk 603 is fixedly connected to the other end of the temperature-sensing coil spring 602. The serrated inner disk 603 is located in front of the first heat exchange plate 501 and is rotatably connected to the rear side of the adjacent second heat exchange plate 502. The serrated inner disk 603 is sealed inside the serrated outer disk 601, and the serrations of the serrated inner disk 603 are movably connected to the serrations of the serrated outer disk 601.

[0025] like Figures 1-2 and Figures 8-10 As shown, the second descaling unit 7 includes: The first outer casing 701 is fixedly installed at the cold water inlet 101 of the front outer casing 1; Support frame 702 is fixedly disposed inside the first outer shell 701; Sliding plug 703 is sealed and slidably mounted on support frame 702; The elastic sleeve 704 has its front end fixedly mounted on the sliding plug 703 and its rear end fixedly mounted on the support frame 702, so that a sealed air cavity is formed between the support frame 702, the sliding plug 703 and the elastic sleeve 704. The air cavity is filled with pressurized air, and the sliding plug 703 can be reset under air pressure. The limiting ring 705 is fixedly installed inside the first housing 701. Both ends of the limiting ring 705 have connected conical holes for guiding water flow, and the conical hole at the rear end of the limiting ring 705 contacts the sliding plug 703.

[0026] like Figures 8-10 As shown, the second descaling unit 7 also includes: Leaf-shaped plate 706, there are several leaf-shaped plates 706 and they are circumferentially distributed and fixedly disposed inside the first outer shell 701; The rotating ring 707 is rotatably disposed inside the first housing 701. The rotating ring 707 contacts the leaf-shaped plate 706 and is movably connected to the sliding plug 703.

[0027] The rotating ring 707 has several inclined through holes for rotating under the influence of water flow.

[0028] like Figures 1-2 and Figure 11 As shown, the collection unit 8 includes: The second outer shell 801 is fixedly installed at the cold water outlet 102 of the front outer shell 1, and the front end of the second outer shell 801 is the release end 8011; A conical filter 802 is fixedly disposed inside the second housing 801, with the tip of the conical filter 802 facing the cold water outlet 102 of the front housing 1.

[0029] The bottom of the second outer casing 801 is provided with a scale collection port 8012. The filter holes of the conical filter 802 are spiral-shaped, so that when the water flows through the conical filter 802, a spiral water flow is generated, thereby guiding the scale that moves to the conical filter 802 to move along the water flow and to the scale collection port 8012 by the centrifugal force of the water flow.

[0030] Before using this heat exchanger unit, the outlet pipe of the external heat exchanger needs to be connected to the first outer casing 701, the inlet pipe of the external heat exchanger needs to be connected to the release end 8011 of the second outer casing 801, the heating pipe of the external heating equipment needs to be connected to the hot water inlet 103, the recovery pipe of the external heating equipment needs to be connected to the hot water outlet 104, and the scale collection pipe with valve needs to be connected to the scale collection port 8012. In the initial state, the pipe with valve should be kept closed to prevent the water from the external heat exchanger from flowing away through the pipe with valve, which would result in a waste of the water's heat.

[0031] When using the heat exchange unit, the operator starts the heat extraction equipment, causing cold water to flow from the outlet pipe. This cold water enters the second descaling unit 7, then the heat exchange unit 5, and finally flows from the heat exchange unit 5 to the second outer casing 801. After passing through the conical filter 802, the cold water flows back to the heat extraction equipment through the inlet pipe, forming a water circulation system. This cold water ensures that the temperature inside the heat exchange unit 5 does not change drastically, thus protecting it from damage due to thermal expansion and contraction. The operator then starts the heating equipment... Hot water from the heating pipes of the heating equipment enters the heat exchange unit 5 through the hot water inlet 103. It exchanges heat with the cold water in the heat exchange unit 5, causing the temperature of the cold water in the heat exchange unit 5 to rise. Then the temperature of the hot water in the heat exchange unit 5 drops. At this time, the hot water in the heat exchange unit 5 continues to flow and flows back to the recovery pipe of the heating equipment from the hot water outlet 104, realizing the water circulation of the heating equipment. At this time, the cold water in the heat exchange unit 5 continues to flow into the second outer shell 801 after absorbing heat. After passing through the conical filter 802, the cold water flows back into the heat exchange equipment to perform heating work.

[0032] Specifically, the process of cold water entering the second descaling unit 7 and flowing to the heat exchange unit 5 is as follows: Cold water enters the first outer shell 701 through the outlet pipe of the heat exchange equipment, and stops at the limiting ring 705 due to the contact between the sliding plug 703 and the limiting ring 705. The pressure generated when the cold water enters the first outer shell 701 by the heat exchange equipment causes the cold water to squeeze the sliding plug 703. When the pressure of the cold water is greater than the pressure of the air inside the elastic sleeve 704, the cold water drives the sliding plug 703 to squeeze the air inside the elastic sleeve 704. The air inside the elastic sleeve 704 is compressed, and the sliding plug 703 is on the support frame 702. As the device moves backward, a gap is created between the sliding plug 703 and the limiting ring 705. Cold water flows through the gap between the sliding plug 703 and the limiting ring 705. After passing through the through hole of the rotating ring 707, the cold water passes through the leaf-shaped plate 706 and the support frame 702, and finally enters the heat exchange unit 5 through the cold water inlet 101 of the front housing 1. It is worth noting that as the air inside the elastic sleeve 704 is compressed, the air pressure inside the elastic sleeve 704 continuously increases. Eventually, the water pressure of the cold water will be balanced with the air pressure inside the elastic sleeve 704, thereby keeping the sliding plug 703 in a relatively stable position.

[0033] Specifically, the process of cold water exchanging heat with hot water in heat exchange unit 5 is as follows: After entering heat exchange unit 5, cold water passes through the sealing rings at the lower left corners of all sealing frames 503, thus entering all channels formed by adjacent front first heat exchange plates 501 and rear second heat exchange plates 502, that is, entering all channels for cold water flow within heat exchange unit 5, and flowing upwards along the cold water channels. Finally, the cold water passes through the sealing rings at the upper right corners of all sealing frames 503 and flows out of heat exchange unit 5; while hot water, after entering heat exchange unit 5, passes through the sealing rings at the upper left corners of all sealing frames 503, thus entering all channels formed by adjacent rear first heat exchange plates 501 and rear second heat exchange plates 502, that is, entering all channels for cold water flow within heat exchange unit 5, and flowing upwards along the cold water channels. The channel formed by heat exchange plate 501 and the front second heat exchange plate 502 is the channel through which all hot water flows into the heat exchange unit 5. The hot water flows downwards along the hot water channel, and finally, the cold water passes through the sealing rings at the lower right corners of all sealing frames 503 and flows out of the heat exchange unit 5. The hot water channel and the cold water channel are separated only by one first heat exchange plate 501 or one second heat exchange plate 502, thus transferring heat from the hot water channel to the cold water through the first heat exchange plate 501 or one second heat exchange plate 502. The raised surface of the Y-shaped groove 504 is located in the cold water channel, causing the cold water to be blocked by the raised surface of the Y-shaped groove 504 as it flows upwards. The surface guides the flow, increasing the residence time of cold water within the cold water channel, allowing the cold water to fully absorb heat from the hot water. Furthermore, when the cold water is between the raised surfaces of the two Y-shaped grooves 504, its volume decreases, reducing the heat required for heating and thus enabling more efficient temperature increases. The concave surface of the Y-shaped groove 504 is located within the hot water channel, guiding the downward flow of hot water into the groove. This results in a larger volume of hot water in the Y-shaped groove 504, absorbing more heat, and ensuring that the heat transferred from the hot water to the cold water remains at a relatively high temperature. To improve the continuous heat transfer effect of hot water to cold water during the flow process, as the indentation of the Y-shaped groove 504 gradually becomes shallower, the cross-sectional area of ​​the hot water flowing downward gradually decreases, thereby increasing the flow velocity of the hot water. The hot water at the Y-shaped groove 504 will have a differential velocity with the surrounding hot water, thus allowing the hot water at the Y-shaped groove 504, which releases more heat, to mix with the surrounding hot water, ensuring that the hot water temperature is uniform and that there is no situation where the local temperature is too low, resulting in low thermal conductivity. Finally, the cold water passes through the sealing ring at the upper right corner of all the sealing frames 503 and flows out of the heat exchange unit 5, completing the entire process of heat exchange of cold water in the heat exchange unit 5.

[0034] It is worth noting that as the temperature of cold water increases, the solubility of some sparingly soluble substances decreases, leading to scale formation on the first heat exchange plate 501 and the rear second heat exchange plate 502. As the scale thickens, the heat exchange efficiency of cold water in the heat exchange unit 5 gradually decreases. On one hand, the thickening of scale reduces the flow rate of cold water in the heat exchange unit 5. At this time, the heat extraction device continuously supplies cold water to the heat exchange unit 5 through the second descaling unit 7, increasing the water pressure in the second descaling unit 7. This increased water pressure causes the cold water to continue pushing the sliding plug 703, causing it to move backward and compress the air in the elastic sleeve 704. The air in the elastic sleeve 704 is further compressed, increasing the gap between the sliding plug 703 and the limiting ring 705, thereby increasing the flow rate of cold water from the second descaling unit 704. The flow velocity from unit 7 to heat exchange unit 5 ensures that the flow rate of cold water is not significantly affected by scale, guaranteeing the normal operation of the heat exchange equipment. On the other hand, since the through-hole of the rotating ring 707 is inclined, as the flow velocity of the cold water increases, the cold water generates a stronger impact force during flow. When the cold water passes through the inclined through-hole of the rotating ring 707, it impacts the wall of the inclined through-hole of the rotating ring 707. This impact force drives the rotating ring 707 to rotate. At this time, the through-hole of the rotating ring 707 rotates, and under the obstruction of the blade plate 706, the flow of cold water is adjusted, so that the cross-section of the cold water flow changes periodically. (It is worth noting that even when the blade plate 706 is least effective in obstructing the water flow, the impact of the water flow on the inclined through-hole of the rotating ring 707 is minimal, but it can still drive the rotation.) The rotating ring 707 rotates, meaning the flow rate of the cold water changes periodically. This change in flow rate makes it easier for the cold water to have a velocity difference when flowing within the heat exchange unit 5, thus creating turbulence. The instability of the turbulence causes it to impact the scale surface, thereby peeling the scale off from the first heat exchange plate 501 and the rear second heat exchange plate 502. In addition, the presence of scale prevents the cold water from fully absorbing the temperature of the hot water, resulting in a higher hot water temperature. The hot water temperature is transmitted to the temperature-sensing coil spring 602 through the serrated outer disc 601, causing the temperature-sensing coil spring 602 to deform and generate huge internal stress. This causes the serrated inner disc 603 to rotate within the serrated outer disc 601. The rotation of the serrated inner disc 603 causes it to move through contact with the serrations of the serrated outer disc 601. The movement of the serrated inner disc 603 drives... The second heat exchange plate 502 deforms in the middle. The squeezing of the serrated inner disk 603 and the serrated outer disk 601 causes the serrated outer disk 601 to move, causing it to deform the first heat exchange plate 501. This continues until the serrated inner disk 603 rotates and disengages from the serrated outer disk 601. Since both the first and second heat exchange plates 501 and 502 are made of metal and have good elasticity, the elasticity of the second heat exchange plate 502 will cause the serrated inner disk 603 to reset, and the middle of the second heat exchange plate 502 will quickly deform and recover. At the same time, the elasticity of the first heat exchange plate 501 will cause the serrated outer disk 601 to reset, and the middle of the first heat exchange plate 501 will quickly deform and recover. This allows the stubborn scale to detach from the first and second heat exchange plates 501 and 502.This prevents scale buildup on the first heat exchange plate 501 and the second heat exchange plate 502 from reducing their heat exchange efficiency. The scale, initially thin and brittle, gradually breaks into fragments under the impact of the turbulent cold water flow. These fragments flow along with the cold water into the second outer shell 801 and are blocked by the conical filter 802. Because the filter holes in the conical filter 802 are spiral-shaped, the cold water flowing through it generates a spiral flow. This allows the scale, guided by the cold water to the conical filter 802, to move along the water flow and, through centrifugal force, to the scale collection port 8012. When the collected scale needs to be removed, opening the valve on the valved pipe allows the scale to be discharged with the water flow.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A modular intelligent heat exchanger unit that is easy to maintain, comprising: Front shell (1); Support rod (2), there are several support rods (2) and they are distributed in a mirror image on the rear side of the front shell (1); The rear outer shell (3) is fixedly mounted on one end of the support rod (2); Its features are, It also includes: There are two limit frames (4), which are fixedly installed on the front shell (1) and the rear shell (3) respectively. Heat exchange unit (5) is set on limit frame (4), and the front side of heat exchange unit (5) is in contact with front shell (1). The front shell (1) is provided with cold water inlet (101), cold water outlet (102), hot water inlet (103) and hot water outlet (104). The cold water inlet (101), cold water outlet (102), hot water inlet (103) and hot water outlet (104) are all connected to heat exchange unit (5). The rear side of heat exchange unit (5) is in contact with rear shell (3) and is used to transfer the heat of hot water to cold water through heat exchange unit (5) to increase the temperature of cold water. The first descaling unit (6) has several units and is located inside the heat exchange unit (5) for removing scale adhering to the heat exchange unit (5); The second descaling unit (7) is connected to the cold water inlet (101) of the front shell (1). The second descaling unit (7) automatically adjusts the flow rate of cold water entering the heat exchange unit (5) to remove the scale generated at the heat exchange unit (5). The collection unit (8) is connected to the cold water outlet (102) of the front housing (1) and is used to collect the scale removed from the heat exchange unit (5).

2. The modular intelligent heat exchanger unit for easy maintenance according to claim 1, characterized in that, The heat exchange unit (5) includes: The first heat exchange plate (501) has several first heat exchange plates (501), and each of them has a first slot for positioning. The first heat exchange plate (501) is engaged with the limiting frame (4) through the first slot. The second heat exchange plate (502) has several of them, and each of them has a second slot for positioning. The second heat exchange plate (502) is engaged with the limiting frame (4) through the second slot. The first heat exchange plate (501) and the second heat exchange plate (502) are arranged alternately. The sealing frame (503) is provided with positioning grooves on the first heat exchange plate (501) and the second heat exchange plate (502). The sealing frame (503) is located in the positioning grooves of the first heat exchange plate (501) and the second heat exchange plate (502), so that a water supply channel is formed between the first heat exchange plate (501) and the second heat exchange plate (502).

3. The modular intelligent heat exchanger unit for easy maintenance according to claim 2, characterized in that, The sealing frame (503) has a trapezoidal cross section on one side that contacts the positioning grooves of the first heat exchange plate (501) and the second heat exchange plate (502), and a triangular cross section on the other side. The trapezoidal cross section of the sealing frame (503) allows the sealing frame (503) to be used to position the positioning grooves of the first heat exchange plate (501) and the second heat exchange plate (502). The triangular cross section of the sealing frame (503) causes the sealing frame (503) to deform when it squeezes the first heat exchange plate (501) and the second heat exchange plate (502), thereby sealing the gap between the first heat exchange plate (501) and the second heat exchange plate (502).

4. The modular intelligent heat exchanger unit for easy maintenance according to claim 2, characterized in that, The heat exchange unit (5) also includes: Both the first heat exchange plate (501) and the second heat exchange plate (502) are provided with Y-shaped grooves (504). The concave surface of the Y-shaped groove (504) of the first heat exchange plate (501) and the concave surface of the Y-shaped groove (504) of the second heat exchange plate (502) face opposite directions. The lower end of the Y-shaped groove (504) is shallower and the upper end is deeper, so that the Y-shaped groove (504) is used to guide the water flow between the first heat exchange plate (501) and the second heat exchange plate (502).

5. The modular intelligent heat exchanger unit for easy maintenance according to claim 2, characterized in that, The first descaling unit (6) includes: The serrated outer plate (601) is located behind the second heat exchange plate (502) and is fixedly installed on the front side of the adjacent first heat exchange plate (501); Temperature-sensitive coil spring (602), one end of which is fixedly mounted on one side of the serrated outer disk (601); The serrated inner disk (603) is fixedly connected to the other end of the temperature-sensing coil spring (602). The serrated inner disk (603) is located in front of the first heat exchange plate (501) and is rotatably connected to the rear side of the adjacent second heat exchange plate (502). The serrated inner disk (603) is sealed inside the serrated outer disk (601), and the serrations of the serrated inner disk (603) are movably connected to the serrations of the serrated outer disk (601).

6. The modular intelligent heat exchanger unit for easy maintenance according to claim 1, characterized in that, The second descaling unit (7) includes: The first outer casing (701) is fixedly installed at the cold water inlet (101) of the front outer casing (1); The support frame (702) is fixedly installed inside the first outer shell (701); A sliding plug (703) is slidably mounted on a support frame (702). The elastic sleeve (704) has its front end fixedly mounted on the sliding plug (703) and its rear end fixedly mounted on the support frame (702), so that a sealed air cavity is formed between the support frame (702), the sliding plug (703) and the elastic sleeve (704), and the air cavity is filled with pressurized air, so that the sliding plug (703) can be reset under air pressure; The limiting ring (705) is fixedly installed inside the first housing (701). The limiting ring (705) has a conical hole at both ends for guiding water flow, and the conical hole at the rear end of the limiting ring (705) is in contact with the sliding plug (703).

7. A modular intelligent heat exchanger unit for easy maintenance according to claim 6, characterized in that, The second descaling unit (7) also includes: Leaf-shaped plates (706), there are several leaf-shaped plates (706) and they are circumferentially distributed and fixedly disposed inside the first outer shell (701); Rotating ring (707) is rotatably disposed inside the first housing (701). Rotating ring (707) contacts the leaf-shaped plate (706) and is movably connected to the sliding plug (703).

8. The modular intelligent heat exchanger unit for easy maintenance according to claim 7, characterized in that, The rotating ring (707) has several inclined through holes for rotating under the push of water flow.

9. The modular intelligent heat exchanger unit for easy maintenance according to claim 1, characterized in that, The collection unit (8) includes: The second outer casing (801) is fixedly installed at the cold water outlet (102) of the front outer casing (1); A conical filter (802) is fixedly installed inside the second housing (801), with the tip of the conical filter (802) facing the cold water outlet (102) of the front housing (1).

10. A modular intelligent heat exchanger unit that is easy to maintain according to claim 9, characterized in that, The filter holes of the conical filter (802) are spiral-shaped, so that when the water flows through the conical filter (802), a spiral water flow is generated, thereby guiding the scale that moves to the conical filter (802) to move along the water flow and to the bottom of the second shell (801) by the centrifugal force of the water flow.

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