Low-temperature evaporator with optimized heat exchange structure

Abstract

The invention belongs to the technical field of low-temperature evaporators, and discloses a low-temperature evaporator with an optimized heat exchange structure, which comprises a rack, a low-temperature evaporator body is fixedly mounted in the middle of the left side of the rack, guide locking pieces are arranged at the upper end and the lower end of the right side of the rack, and the guide locking pieces are connected with the rack. Locking cover plates are arranged on the left side and the right side between the two guide locking pieces, and the guide locking pieces and the locking cover plates are movably connected in a clamped mode. Normal heat exchange is conducted through the sealing ring, when the heat exchange efficiency needs to be adjusted, only the second three-way valve needs to be controlled, water flow can be forcibly guided to enter the auxiliary heat exchange pipe, the path of the auxiliary heat exchange pipe is forcibly increased, then the heat exchange time is prolonged, the heat exchange area is increased, a plurality of metal sheets do not need to be additionally arranged, and the use cost is effectively reduced; meanwhile, the occupied space can be effectively reduced, the heat exchange efficiency is improved on the premise that the size of the heat exchanger is not increased, and the heat exchange rate is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of low-temperature evaporators, and in particular relates to a low-temperature evaporator with an optimized heat exchange structure. Background Art

[0002] Low temperature evaporator is a device that uses an external heat source to heat the evaporated material to a temperature that makes it evaporate, and then condenses the steam through a cooling device to collect the desired product. Its working principle is to reduce the boiling point of the solution by reducing the pressure in the evaporation tank. Specifically, the evaporation tank is evacuated into a vacuum state by a vacuum pump. Under this pressure, the boiling point of water will be significantly reduced. Then, the material is continuously circulated and atomized to the heat exchanger through a forced circulation pump, and the water in the solution is evaporated. Finally, the water vapor is cooled by a condensing device.

[0003] In a low-temperature evaporator, a heat exchanger is often used to exchange heat for materials. Generally, the temperature of the material is kept constant at a suitable temperature through the heat exchanger. Larger low-temperature evaporators generally use plate heat exchangers for heat exchange, which are generally composed of multiple metal sheets. The material can exchange heat with the coolant through the metal sheets to achieve the purpose of controlling the temperature. However, in actual use, if the heat exchange efficiency needs to be improved, the number of metal sheets must be increased. More metal sheets will increase the volume of the heat exchanger, and it is impossible to increase the heat exchange efficiency without increasing the volume of the heat exchanger.

[0004] At the same time, since the two adjacent metal plates are in close contact with each other and the gap between them is small when the heat exchanger is in use, impurities in the fluid and coolant will remain between the two metal plates during long-term use. The accumulation of more impurities will cause a certain blockage in the fluid channel, thereby causing a decrease in heat exchange efficiency, which urgently needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a low-temperature evaporator with an optimized heat exchange structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-temperature evaporator with an optimized heat exchange structure, comprising a frame, a low-temperature evaporator body is fixedly installed in the middle of the left side of the frame, and guide locking pieces are provided at the upper and lower ends of the right side of the frame, the guide locking pieces are connected to the frame, and locking cover plates are provided on the left and right sides between the two guide locking pieces, the guide locking pieces and the locking cover plates are movably connected, and a water supply assembly is provided on the top of the upper guide locking piece, and a reverse heat exchange plate and a forward heat exchange plate are arranged between the two locking cover plates at equal intervals in sequence, and every two adjacent reverse heat exchange plates and forward heat exchange plates are in contact with each other, and heat exchange assemblies are installed on the right sides of the forward heat exchange plate and the reverse heat exchange plate, and the directions of the heat exchange assemblies installed on the forward heat exchange plate and the reverse heat exchange plate are completely opposite, and a distribution assembly is installed on one side of the heat exchange assembly, and the distribution assembly is away from the heat exchange assembly. One end is fixedly connected with a No. 2 three-way valve, and one end of the No. 2 three-way valve away from the distribution component is connected with the water supply component, and the upper and lower ends between the forward heat exchange plate and the reverse heat exchange plate are provided with auxiliary maintenance components, and the other end of the auxiliary maintenance component is fixedly connected with the No. 2 three-way valve, and the middle positions of the upper and lower ends of the forward heat exchange plate and the reverse heat exchange plate are fixedly installed with fixed magnets located on one side of the auxiliary maintenance component, and the top of the water supply component is connected to an external water pump, and the upper and lower ends of the left side after the forward heat exchange plate and the reverse heat exchange plate are combined are respectively fixedly connected with a hot water inlet pipe and a hot water discharge pipe, and the upper and lower ends of the right side after the forward heat exchange plate and the reverse heat exchange plate are combined are respectively fixedly connected with a cold water discharge pipe and a cold water inlet pipe, and the hot water inlet pipe and the hot water discharge pipe are respectively connected to the low-temperature evaporator body, and the cold water inlet pipe and the cold water discharge pipe are respectively connected to the external cold water pipeline.

[0007] As a further technical solution of the present invention, locking bolts are installed on the left and right sides of the two locking cover plates, and the two locking cover plates are locked to each other with the internal forward heat exchange plate and reverse heat exchange plate through the locking bolts.

[0008] Before using the device, the low-temperature evaporator body needs to be connected to the hot water inlet pipe and the hot water outlet pipe to ensure the input and discharge of hot water. At the same time, the external cold water pipe can be connected to the cold water inlet pipe and the cold water outlet pipe to ensure the normal input of cooling water. At the same time, the two locking cover plates need to be locked and installed using locking bolts to ensure close contact between the forward heat exchange plate and the reverse heat exchange plate to complete the locking process.

[0009] As a further technical solution of the present invention, the guide locking member includes a guide slider, and the two guide sliders are movably connected with the upper and lower ends of the locking cover plate and the forward heat exchange plate and the reverse heat exchange plate respectively. Cleaning pipes are fixedly installed at equal distances inside the guide slider, and the bottom end of the cleaning pipe is located between the two forward heat exchange plates and the reverse heat exchange plate, and the other end of the cleaning pipe is connected to the auxiliary maintenance component.

[0010] Among them, the locking cover plate and the forward heat exchange plate and the reverse heat exchange plate can all slide left and right relative to the two guiding sliders, and the upper and lower guiding sliders can keep the locking cover plate and the forward heat exchange plate and the reverse heat exchange plate only able to move left and right, and cannot move up and down.

[0011] As a further technical solution of the present invention, the water supply assembly includes a No. 1 three-way valve, the top of which is connected to an external water pump, the left and right ends of the No. 1 three-way valve are fixedly connected to a water pipe, the other end of the water pipe is fixedly connected to a distribution box, and the other end of the distribution box is connected to the No. 2 three-way valve.

[0012] When the device is in working condition, the top end of the No. 1 three-way valve can be connected to an external water pump to pump in external high-pressure water.

[0013] As a further technical solution of the present invention, the heat exchange assembly includes a sealing ring, one end of which is connected to the right side of the forward heat exchange plate and the reverse heat exchange plate. The heat exchange assembly also includes an auxiliary heat exchange tube located on the inner side of the sealing ring, one end of which is connected between the forward heat exchange plate and the reverse heat exchange plate, and a baffle is movably connected to the top end of the auxiliary heat exchange tube.

[0014] As a further technical solution of the present invention, the baffle slides back and forth relative to the auxiliary heat exchange tube, and a distribution groove adapted to the inlet of the auxiliary heat exchange tube is opened at the top of the baffle. When the baffle is completely located inside the sealing ring, the distribution groove is located directly above the inlet of the auxiliary heat exchange tube, and the other end of the baffle is connected to the distribution assembly.

[0015] In the initial state, the distribution component is in the initial state. At this time, the distribution groove does not correspond to the inlet of the auxiliary heat exchange tube. At this time, the heat exchange component is in a low heat exchange efficiency state. The hot water exported through the low-temperature evaporator body can enter the interior of multiple reverse heat exchange plates through the hot water inlet pipe, and enter the interior of the heat exchange component on one side of the reverse heat exchange plate. At this time, hot water can enter through the top of the sealing ring and be discharged through the bottom of the sealing ring. It is finally discharged through the hot water discharge pipe, while cold water can enter through the cold water inlet pipe and enter the interior of multiple forward heat exchange plates. After passing through the sealing ring, it is discharged through the cold water discharge pipe. The cold and hot water between two adjacent forward heat exchange plates and the reverse heat exchange plate are heat exchanged through the barriers of the forward heat exchange plate and the reverse heat exchange plate to complete the temperature control process of the hot water.

[0016] As a further technical solution of the present invention, the distribution component includes a temporary storage tube, the end of the temporary storage tube away from the heat exchange component is connected to the No. 2 three-way valve, the internal movable sleeve of the temporary storage tube is provided with a second piston plate, the end of the second piston plate away from the No. 2 three-way valve is fixedly installed with the temporary storage tube, the end of the second piston plate away from the No. 2 three-way valve is fixedly installed with a second piston rod, the other end of the second piston rod passes through the temporary storage tube and is connected to the baffle, and a reset spring is fixedly connected between the second piston plate and the temporary storage tube.

[0017] When the heat exchange efficiency needs to be improved, that is, the temperature of the hot water is high and the cooling effect needs to be improved, an external water pump can be turned on to output high-pressure water to the interior of the No. 1 three-way valve. At this time, the high-pressure water is then discharged through the water pipes on both sides and enters the interior of the distribution box. After being distributed by the distribution box, it enters the interior of multiple No. 2 three-way valves. At this time, only the valve at the connection between the No. 2 three-way valve and the distribution component is kept in an open state, while the valve at the connection with the auxiliary maintenance component is kept closed. At this time, the high-pressure water then enters the interior of the temporary storage tube through the No. 2 three-way valve and exerts pressure on the second piston plate. At this time, the return spring is stretched and drives the second piston plate and the second piston rod to move in the direction away from the No. 2 three-way valve. At this time, the baffle can be pushed to move in the direction away from the distribution component until it is displaced to the limit position. At this time, the baffle can block the waterway. At this time, the distribution groove can correspond to the auxiliary heat exchange tube, forcibly guide the water flow to the interior of the auxiliary heat exchange tube, increase the flow path of the water flow, increase the heat exchange time, and thus complete the increase in heat exchange efficiency.

[0018] By arranging an auxiliary heat exchange tube inside the sealing ring and through the cooperation between external high-pressure water and the auxiliary maintenance components, the device can perform normal heat exchange through the sealing ring in the initial state. When the heat exchange efficiency needs to be adjusted, it is only necessary to control the No. 2 three-way valve to force the water flow into the auxiliary heat exchange tube, forcibly increase its path, and thereby increase its heat exchange time and heat exchange area without adding multiple metal sheets, effectively reducing the cost of use and effectively reducing the occupied space, thereby achieving an increase in heat exchange efficiency without increasing the volume of the heat exchanger and improving the heat exchange rate.

[0019] As a further technical solution of the present invention, the auxiliary maintenance assembly includes an adjusting tube, one end of the adjusting tube away from the guide locking piece is fixedly connected to a pressure tube, the other end of the pressure tube is connected to the No. 2 three-way valve, the internal movable sleeve of the adjusting tube is connected to a first piston plate, and the end of the first piston plate close to the guide locking piece is fixedly connected to a first piston rod located inside the adjusting tube.

[0020] As a further technical solution of the present invention, one end of the first piston rod away from the pressure tube passes through one end of the regulating tube and is fixedly connected to a movable magnet, and a return spring is movably sleeved on the outer side of the first piston rod, and the left and right ends of the return spring are respectively connected to one end of the inner cavity of the regulating tube and one end of the first piston plate.

[0021] As a further technical solution of the present invention, a drain valve is fixedly connected to one side of the top of the regulating tube near the guide locking piece, and the other end of the drain valve is connected to the cleaning tube. When the reset spring is compressed to the limit state, the movable magnet is located between the two fixed magnets, and the first piston plate is located at the front end of the drain valve, and the magnetic pole directions of the left and right ends of the movable magnet are the same as those of the fixed magnet.

[0022] When the device needs to be inspected and repaired, the locking bolt can be loosened first, and the valve at the connection between the No. 2 three-way valve and the auxiliary inspection component can be opened. At this time, high-pressure water enters the interior of the regulating tube through the pressure pipe, that is, pressure is applied to the first piston plate. At this time, the reset spring can be compressed, and at the same time, the first piston rod and the first piston plate are displaced in the direction away from the No. 2 three-way valve, which can drive the movable magnet to be displaced in the direction away from the No. 2 three-way valve until the movable magnet is displaced to the fixed magnet on one side of the forward heat exchange plate and the reverse heat exchange plate. At this time, the movable magnet can be located between the two fixed magnets. Due to the repulsion of like charges, the movable magnet can exert a force on the two fixed magnets, so that the two fixed magnets move away from each other. At this time, multiple forward heat exchange plates and reverse heat exchange plates can move away from each other, completing the automatic separation process.

[0023] By further utilizing the external high-pressure water, that is, the effect of high-pressure water, the active magnet is automatically pushed, and by utilizing the principle of like charges repelling each other, the two fixed magnets are automatically separated in a non-contact state due to the action of the active magnet, thereby quickly separating the forward heat exchange plate and the reverse heat exchange plate. The whole process is completed quickly, avoiding the complicated disassembly process of traditional devices, effectively improving maintenance efficiency and reducing maintenance difficulty.

[0024] At the same time, when the movable magnet moves to between the two fixed magnets, that is, the reset spring is compressed to the limit position, the first piston plate moves to one side of the drain valve, that is, the high-pressure water can be discharged through the drain valve, and enter the interior of the cleaning pipe through the drain valve, and enter the middle position between the forward heat exchange plate and the reverse heat exchange plate through the bottom end of the cleaning pipe, and use the high-pressure water to directly flush the position between the forward heat exchange plate and the reverse heat exchange plate to complete the self-cleaning process.

[0025] By directly utilizing the effect of high-pressure water, that is, when the device is switched to maintenance status, high-pressure water can be used to automatically flush the forward heat exchange plate and the reverse heat exchange plate. The entire process can be carried out automatically after the device is switched to maintenance status. There is no need for traditional devices to remove multiple thin plates for manual flushing, which effectively reduces the difficulty of maintenance and avoids the decrease in heat exchange efficiency caused by blockage due to long-term use.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. The present invention arranges an auxiliary heat exchange tube inside the sealing ring, and cooperates with external high-pressure water and the auxiliary maintenance component, so that the device can perform normal heat exchange through the sealing ring in the initial state. When the heat exchange efficiency needs to be adjusted, it only needs to control the No. 2 three-way valve to force the water flow into the auxiliary heat exchange tube, forcibly increase its path, and then increase its heat exchange time and heat exchange area, without adding multiple metal sheets, effectively reducing the use cost, and at the same time effectively reducing the occupied space, so as to achieve an increase in heat exchange efficiency without increasing the volume of the heat exchanger, thereby improving the heat exchange rate.

[0028] 2. The present invention further utilizes the external high-pressure water, that is, the effect of the high-pressure water to realize the automatic pushing of the movable magnet, and utilizes the principle of like charges repelling each other to realize the automatic separation of the two fixed magnets in a non-contact state due to the action of the movable magnet, thereby quickly separating the forward heat exchange plate and the reverse heat exchange plate. The whole process is completed quickly, avoiding the complicated disassembly process of the traditional device, effectively improving the maintenance efficiency and reducing the maintenance difficulty.

[0029] 3. The present invention directly utilizes the effect of high-pressure water. When the device is switched to a maintenance state, the forward heat exchange plate and the reverse heat exchange plate can be automatically flushed by high-pressure water. The whole process can be automatically performed after the device is switched to a maintenance state. There is no need for traditional devices to remove multiple thin plates for manual flushing, which effectively reduces the difficulty of maintenance and avoids the decrease in heat exchange efficiency caused by blockage due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the present invention in a state where the frame and the low-temperature evaporator body are hidden;

[0032] Figure 3 It is a separate schematic diagram of the structure of the water supply assembly of the present invention;

[0033] Figure 4 It is an exploded schematic diagram of the locking cover plate and the locking bolt structure of the present invention;

[0034] Figure 5 It is an exploded schematic diagram of the guide locking member and the forward heat exchange plate and the reverse heat exchange plate structure of the present invention;

[0035] Figure 6 It is a separate cross-sectional schematic diagram of the guide locking member structure of the present invention;

[0036] Figure 7 It is a schematic diagram of the coordination of the No. 2 three-way valve and the auxiliary maintenance assembly structure of the present invention;

[0037] Figure 8 It is a schematic diagram of the coordination of the heat exchange component and the distribution component structure of the present invention;

[0038] Fig. 9 for Figure 8 A magnified schematic diagram of the structure at center A;

[0039] Fig.10 It is a schematic diagram of the coordination of the forward heat exchange plate and the heat exchange assembly structure of the present invention;

[0040] Fig.11 It is an exploded schematic diagram of the forward heat exchange plate and the reverse heat exchange plate structure of the present invention.

[0041] In the figure: 1, frame; 2, low temperature evaporator body; 3, hot water inlet pipe; 4, hot water outlet pipe; 5, cold water inlet pipe; 6, cold water outlet pipe; 7, guide locking piece; 701, guide slider; 702, cleaning pipe; 8, water supply assembly; 801, No. 1 three-way valve; 802, water pipe; 803, distribution box; 9, locking cover; 10, locking bolt; 11, forward heat exchange plate; 12, reverse heat exchange plate; 13, heat exchange assembly; 131, sealing ring; 1 32. Auxiliary heat exchange tube; 133. Baffle; 134. Distribution tank; 14. No. 2 three-way valve; 15. Auxiliary maintenance assembly; 151. Adjusting tube; 152. Pressure tube; 153. First piston plate; 154. First piston rod; 155. Return spring; 156. Drain valve; 157. Movable magnet; 16. Distribution assembly; 161. Temporary storage tube; 162. Second piston plate; 163. Second piston rod; 164. Return spring; 17. Fixed magnet. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 11As shown, in the embodiment of the present invention, a low-temperature evaporator with an optimized heat exchange structure includes a frame 1, a low-temperature evaporator body 2 is fixedly installed in the middle of the left side of the frame 1, and guide locking members 7 are provided at the upper and lower ends of the right side of the frame 1. The guide locking members 7 are connected to the frame 1, and locking cover plates 9 are provided on the left and right sides between the two guide locking members 7. The guide locking members 7 and the locking cover plates 9 are movably connected, and a water supply component 8 is provided at the top of the upper guide locking member 7. Reverse heat exchange The heat exchanger plates 12 and the forward heat exchanger plates 11 are connected to each other, and each of the two adjacent reverse heat exchanger plates 12 and the forward heat exchanger plates 11 is in contact with each other. A heat exchange assembly 13 is installed on the right side of the forward heat exchanger plates 11 and the reverse heat exchanger plates 12. The heat exchange assemblies 13 installed on the forward heat exchanger plates 11 and the reverse heat exchanger plates 12 are in completely opposite directions. A distribution assembly 16 is installed on one side of the heat exchange assembly 13. One end of the distribution assembly 16 away from the heat exchange assembly 13 is fixedly connected to a No. 2 three-way valve 14. One end of the No. 2 three-way valve 14 away from the distribution assembly 16 is connected to a water supply The components 8 are connected, and auxiliary maintenance components 15 are provided at both ends between the forward heat exchange plate 11 and the reverse heat exchange plate 12. The other end of the auxiliary maintenance component 15 is fixedly connected to the No. 2 three-way valve 14. Fixed magnets 17 located on one side of the auxiliary maintenance component 15 are fixedly installed in the middle of the upper and lower ends of the forward heat exchange plate 11 and the reverse heat exchange plate 12. The top of the water supply component 8 is connected to the external water pump. The upper and lower ends of the left side after the forward heat exchange plate 11 and the reverse heat exchange plate 12 are respectively fixedly connected with hot water inlet pipes. 3 and hot water discharge pipe 4, the upper and lower ends of the right side after the forward heat exchange plate 11 and the reverse heat exchange plate 12 are combined are respectively fixedly connected with the cold water discharge pipe 6 and the cold water inlet pipe 5, the hot water inlet pipe 3 and the hot water discharge pipe 4 are respectively connected with the low-temperature evaporator body 2, the cold water inlet pipe 5 and the cold water discharge pipe 6 are respectively connected with the external cold water pipeline, and the left and right sides of the two locking cover plates 9 are installed with locking bolts 10, and the two locking cover plates 9 are locked with each other through the locking bolts 10 with the internal forward heat exchange plate 11 and the reverse heat exchange plate 12.

[0044] Before using the device, the low-temperature evaporator body 2 needs to be connected with the hot water inlet pipe 3 and the hot water outlet pipe 4 to ensure the input and discharge of hot water. At the same time, the external cold water pipe can be connected with the cold water inlet pipe 5 and the cold water outlet pipe 6 to ensure the normal input of cooling water. At the same time, the two locking cover plates 9 need to be locked and installed by the locking bolts 10 to ensure close contact between the forward heat exchange plate 11 and the reverse heat exchange plate 12 to complete the locking process.

[0045] like Figure 2 and Figure 4 as well as Figure 5 and Figure 6As shown, the guide locking member 7 includes a guide slider 701, and the two guide sliders 701 are movably connected with the upper and lower ends of the locking cover plate 9 and the forward heat exchange plate 11 and the reverse heat exchange plate 12 respectively. Cleaning pipes 702 are fixedly installed at equal distances inside the guide slider 701, and the bottom end of the cleaning pipe 702 is located between the two forward heat exchange plates 11 and the reverse heat exchange plate 12, and the other end of the cleaning pipe 702 is connected to the auxiliary maintenance component 15.

[0046] Among them, the locking cover plate 9 and the forward heat exchange plate 11 and the reverse heat exchange plate 12 can all slide left and right relative to the two guiding sliders 701, and the upper and lower guiding sliders 701 can keep the locking cover plate 9 and the forward heat exchange plate 11 and the reverse heat exchange plate 12 only able to move left and right, and cannot move up and down.

[0047] like Figure 1 and Figure 2 as well as Figure 3 As shown, the water supply assembly 8 includes a No. 1 three-way valve 801, the top of which is connected to an external water pump, the left and right ends of the No. 1 three-way valve 801 are fixedly connected to a water pipe 802, the other end of the water pipe 802 is fixedly connected to a distribution box 803, and the other end of the distribution box 803 is connected to the No. 2 three-way valve 14.

[0048] When the device is in working state, the top end of the No. 1 three-way valve 801 can be connected to an external water pump to pump in external high-pressure water.

[0049] like Figure 5 and Figure 8 as well as Fig.10 and Fig.11 As shown, the heat exchange component 13 includes a sealing ring 131, one end of which is connected to the right side of the forward heat exchange plate 11 and the reverse heat exchange plate 12. The heat exchange component 13 also includes an auxiliary heat exchange tube 132 located on the inner side of the sealing ring 131, one end of the auxiliary heat exchange tube 132 is connected between the forward heat exchange plate 11 and the reverse heat exchange plate 12, and a baffle 133 is movably connected to the top of the auxiliary heat exchange tube 132. The baffle 133 slides back and forth relative to the auxiliary heat exchange tube 132, and a distribution groove 134 adapted to the inlet of the auxiliary heat exchange tube 132 is provided at the top of the baffle 133. When the baffle 133 is completely located inside the sealing ring 131, the distribution groove 134 is located directly above the inlet of the auxiliary heat exchange tube 132, and the other end of the baffle 133 is connected to the distribution component 16.

[0050] In the initial state, the distribution component 16 is in the initial state. At this time, the distribution groove 134 does not correspond to the entrance of the auxiliary heat exchange tube 132. At this time, the heat exchange component 13 is in a low heat exchange efficiency state. The hot water exported through the low-temperature evaporator body 2 can enter the interior of the multiple reverse heat exchange plates 12 through the hot water inlet pipe 3, and enter the interior of the heat exchange component 13 on one side of the reverse heat exchange plate 12. At this time, the hot water can enter through the top of the sealing ring 131 and be discharged through the bottom of the sealing ring 131. It is finally discharged through the hot water discharge pipe 4, while the cold water can enter through the cold water inlet pipe 5 and enter the interior of the multiple forward heat exchange plates 11. After passing through the sealing ring 131, it is discharged through the cold water discharge pipe 6. The cold and hot water between the two adjacent forward heat exchange plates 11 and the reverse heat exchange plate 12 are heat exchanged through the obstruction of the forward heat exchange plate 11 and the reverse heat exchange plate 12 to complete the temperature control process of the hot water.

[0051] like Figure 4 and Figure 5 as well as Figure 8 and Fig. 9 As shown, the distribution component 16 includes a temporary storage tube 161, and the end of the temporary storage tube 161 away from the heat exchange component 13 is connected to the No. 2 three-way valve 14. The interior of the temporary storage tube 161 is movably sleeved with a second piston plate 162, and the temporary storage tube 161 is fixedly installed on the end of the second piston plate 162 away from the No. 2 three-way valve 14. The second piston plate 162 is fixedly installed on the end of the second piston plate 162 away from the No. 2 three-way valve 14. The other end of the second piston rod 163 passes through the temporary storage tube 161 and is connected to the baffle 133. A return spring 164 is fixedly connected between the second piston plate 162 and the temporary storage tube 161.

[0052] Embodiment: When the heat exchange efficiency needs to be improved, that is, the temperature of the hot water is high and the cooling effect needs to be improved, an external water pump can be turned on to output high-pressure water to the interior of the No. 1 three-way valve 801. At this time, the high-pressure water is then discharged through the water pipes 802 on both sides and enters the interior of the distribution box 803. After being distributed by the distribution box 803, it then enters the interior of multiple No. 2 three-way valves 14. At this time, only the valve at the connection between the No. 2 three-way valve 14 and the distribution component 16 is kept in an open state, while the valve at the connection with the auxiliary maintenance component 15 is kept in a closed state. At this time, the high-pressure water then passes through the No. 2 three-way valve 14 and enters the temporary storage pipe 161, and applies pressure to the second piston plate 162, at which time the return spring 164 is stretched and drives the second piston plate 162 and the second piston rod 163 to move away from the No. 2 three-way valve 14, and at this time the baffle 133 can be pushed to move away from the distribution component 16 until it is displaced to the limit position, at which time the baffle 133 can block the water path, and at this time the distribution groove 134 can correspond to the auxiliary heat exchange tube 132, forcing the water flow to the inside of the auxiliary heat exchange tube 132, increasing the flow path of the water flow, and improving the heat exchange time, thereby completing the increase in heat exchange efficiency.

[0053] By arranging an auxiliary heat exchange tube 132 inside the sealing ring 131 and through the cooperation between the external high-pressure water and the auxiliary maintenance component 15, the device can perform normal heat exchange through the sealing ring 131 in the initial state. When the heat exchange efficiency needs to be adjusted, it is only necessary to control the No. 2 three-way valve 14 to force the water flow to enter the auxiliary heat exchange tube 132, forcibly increase its path, and thereby increase its heat exchange time and heat exchange area without adding multiple metal sheets, effectively reducing the cost of use, and at the same time effectively reducing the occupied space, thereby achieving an increase in heat exchange efficiency without increasing the volume of the heat exchanger, thereby improving the heat exchange rate.

[0054] like Figure 2 and Figure 4 as well as Figure 5 and Figure 6As shown, the auxiliary maintenance component 15 includes a regulating tube 151, one end of the regulating tube 151 away from the guide locking piece 7 is fixedly connected to a pressure tube 152, the other end of the pressure tube 152 is connected to the No. 2 three-way valve 14, the inside of the regulating tube 151 is movably sleeved with a first piston plate 153, and the end of the first piston plate 153 close to the guide locking piece 7 is fixedly connected to a first piston rod 154 located inside the regulating tube 151, the end of the first piston rod 154 away from the pressure tube 152 passes through one end of the regulating tube 151 and is fixedly connected to a movable magnet 157, the outer side of the first piston rod 154 is movably sleeved with a return spring 155, the left and right ends of the return spring 155 are respectively connected to one end of the inner cavity of the regulating tube 151 and one end of the first piston plate 153, the top of the regulating tube 151 close to the guide locking piece 7 is fixedly connected to a drain valve 156, and the other end of the drain valve 156 is connected to the cleaning tube 702. When the return spring 155 is compressed to the limit state, the movable magnet 157 is located between the two fixed magnets 17, and the first piston plate 153 is located at the front end of the drain valve 156, and the magnetic pole directions of the left and right ends of the movable magnet 157 are the same as those of the fixed magnets 17.

[0055] Embodiment: When the device needs to be overhauled, the locking bolt 10 can be first loosened, and the valve at the connection between the No. 2 three-way valve 14 and the auxiliary overhaul assembly 15 can be opened. At this time, high-pressure water enters the interior of the regulating tube 151 through the pressure tube 152, that is, pressure is applied to the first piston plate 153. At this time, the return spring 155 can be compressed, and at the same time, the first piston rod 154 and the first piston plate 153 are displaced in the direction away from the No. 2 three-way valve 14, which can drive the movable magnet 157 to be displaced in the direction away from the No. 2 three-way valve 14 until the movable magnet 157 is displaced to the fixed magnet 17 on one side of the forward heat exchange plate 11 and the reverse heat exchange plate 12. At this time, the movable magnet 157 can be located between the two fixed magnets 17. Due to the repulsion of like charges, the movable magnet 157 can apply a force to the two fixed magnets 17, so that the two fixed magnets 17 are moved away from each other. At this time, multiple forward heat exchange plates 11 and reverse heat exchange plates 12 can be moved away from each other, completing the automatic separation process.

[0056] By further utilizing the external high-pressure water, that is, the effect of the high-pressure water, the active magnet 157 is automatically pushed, and by utilizing the principle of like charges repelling each other, the two fixed magnets 17 are automatically separated in a non-contact state due to the action of the active magnet 157, thereby quickly separating the forward heat exchange plate 11 and the reverse heat exchange plate 12. The whole process is completed quickly, avoiding the complicated disassembly process of traditional devices, effectively improving maintenance efficiency and reducing maintenance difficulty.

[0057] At the same time, when the movable magnet 157 is displaced to between the two fixed magnets 17, that is, the reset spring 155 is compressed to the extreme position, the first piston plate 153 is displaced to the side of the drain valve 156, that is, the high-pressure water can be discharged through the drain valve 156, and enter the interior of the cleaning pipe 702 through the drain valve 156, and enter the middle position between the forward heat exchange plate 11 and the reverse heat exchange plate 12 through the bottom end of the cleaning pipe 702, and use the high-pressure water to directly flush the position between the forward heat exchange plate 11 and the reverse heat exchange plate 12 to complete the self-cleaning process.

[0058] By directly utilizing the effect of high-pressure water, that is, when the device is switched to a maintenance state, the forward heat exchange plate 11 and the reverse heat exchange plate 12 can be automatically flushed by high-pressure water. The entire process can be automatically performed after the device is switched to a maintenance state. There is no need for traditional devices to remove multiple thin plates for manual flushing, which effectively reduces the difficulty of maintenance and avoids a decrease in heat exchange efficiency caused by blockage due to long-term use.

[0059] Working principle and usage process:

[0060] Before using the device, the low-temperature evaporator body 2 needs to be connected with the hot water inlet pipe 3 and the hot water outlet pipe 4 to ensure the input and discharge of hot water. At the same time, the external cold water pipeline can be connected with the cold water inlet pipe 5 and the cold water outlet pipe 6 to ensure the normal input of cooling water. At the same time, the two locking cover plates 9 need to be locked and installed by the locking bolts 10 to ensure the close contact between the forward heat exchange plate 11 and the reverse heat exchange plate 12 to complete the locking process;

[0061] In the initial state, the distribution component 16 is in the initial state. At this time, the distribution groove 134 does not correspond to the inlet of the auxiliary heat exchange tube 132. At this time, the heat exchange component 13 is in a low heat exchange efficiency state. The hot water exported through the low-temperature evaporator body 2 can enter the interior of the multiple reverse heat exchange plates 12 through the hot water inlet pipe 3, and enter the interior of the heat exchange component 13 on one side of the reverse heat exchange plate 12. At this time, the hot water can enter through the top of the sealing ring 131 and be discharged through the bottom of the sealing ring 131. It is finally discharged through the hot water discharge pipe 4, while the cold water can enter through the cold water inlet pipe 5 and enter the interior of the multiple forward heat exchange plates 11. After passing through the sealing ring 131, it is discharged through the cold water discharge pipe 6. The cold and hot water between the two adjacent forward heat exchange plates 11 and the reverse heat exchange plate 12 are heat exchanged through the obstruction of the forward heat exchange plate 11 and the reverse heat exchange plate 12, completing the temperature control process of the hot water;

[0062] When the heat exchange efficiency needs to be improved, that is, the temperature of the hot water is high and the cooling effect needs to be improved, an external water pump can be turned on to output high-pressure water to the interior of the No. 1 three-way valve 801. At this time, the high-pressure water is then discharged through the water pipes 802 on both sides and enters the interior of the distribution box 803. After being distributed by the distribution box 803, it then enters the interior of multiple No. 2 three-way valves 14. At this time, only the valve at the connection between the No. 2 three-way valve 14 and the distribution component 16 is kept in an open state, while the valve at the connection with the auxiliary maintenance component 15 is kept in a closed state. At this time, the high-pressure water then passes through the No. 2 three-way valve 14 and enters the temporary storage pipe 16 1, and applies pressure to the second piston plate 162. At this time, the return spring 164 is stretched, and drives the second piston plate 162 and the second piston rod 163 to move away from the No. 2 three-way valve 14. At this time, the baffle 133 can be pushed to move away from the distribution component 16 until it is displaced to the limit position. At this time, the baffle 133 can block the waterway. At this time, the distribution groove 134 can correspond to the auxiliary heat exchange tube 132, and the water flow is forced to be guided to the inside of the auxiliary heat exchange tube 132, thereby increasing the flow path of the water flow, improving the heat exchange time, and thus completing the increase in heat exchange efficiency;

[0063] When the device needs to be overhauled, the locking bolt 10 can be first loosened, and the valve at the connection between the No. 2 three-way valve 14 and the auxiliary overhaul assembly 15 can be opened. At this time, high-pressure water enters the interior of the regulating tube 151 through the pressure pipe 152, that is, pressure is applied to the first piston plate 153. At this time, the reset spring 155 can be compressed, and at the same time, the first piston rod 154 and the first piston plate 153 are displaced in the direction away from the No. 2 three-way valve 14, which can drive the movable magnet 157 to be displaced in the direction away from the No. 2 three-way valve 14, until the movable magnet 157 is displaced to the fixed magnet 17 on one side of the forward heat exchange plate 11 and the reverse heat exchange plate 12. At this time, the movable magnet 157 can be located between the two fixed magnets 17. Due to the repulsion of like charges, the movable magnet 157 can apply a force to the two fixed magnets 17, so that the two fixed magnets 17 are moved away from each other. At this time, multiple forward heat exchange plates 11 and reverse heat exchange plates 12 can be moved away from each other, completing the automatic separation process;

[0064] At the same time, when the movable magnet 157 is displaced to between the two fixed magnets 17, that is, the reset spring 155 is compressed to the extreme position, the first piston plate 153 is displaced to the side of the drain valve 156, that is, the high-pressure water can be discharged through the drain valve 156, and enter the interior of the cleaning pipe 702 through the drain valve 156, and enter the middle position between the forward heat exchange plate 11 and the reverse heat exchange plate 12 through the bottom end of the cleaning pipe 702, and use the high-pressure water to directly flush the position between the forward heat exchange plate 11 and the reverse heat exchange plate 12 to complete the self-cleaning process.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature evaporator with an optimized heat exchange structure, comprising a frame (1), characterized in that: A low-temperature evaporator body (2) is fixedly mounted in the middle of the left side of the frame (1); guide locking pieces (7) are provided at both upper and lower ends of the right side of the frame (1); the guide locking piece (7) is connected to the frame (1); locking cover plates (9) are provided on both left and right sides between the two guide locking pieces (7); the guide locking piece (7) and the locking cover plates (9) are movably connected; a water supply assembly (8) is provided at the top of the upper guide locking piece (7); reverse heat exchange plates (12) are provided at equal intervals between the two locking cover plates (9) and a forward heat exchange plate (11), each two adjacent reverse heat exchange plates (12) and the forward heat exchange plate (11) are in contact with each other, a heat exchange assembly (13) is installed on the right side of the forward heat exchange plate (11) and the reverse heat exchange plate (12), the heat exchange assemblies (13) installed on the forward heat exchange plate (11) and the reverse heat exchange plate (12) are in completely opposite directions, a distribution assembly (16) is installed on one side of the heat exchange assembly (13), and one end of the distribution assembly (16) away from the heat exchange assembly (13) is fixedly connected to a No. 2 three-way valve (14), and the No. 2 three-way valve (14) is fixedly connected to the No. 2 three-way valve (14). The ends of the No. 1 three-way valve (14) away from the distribution assembly (16) are connected to the water supply assembly (8), and the upper and lower ends between the forward heat exchange plate (11) and the reverse heat exchange plate (12) are provided with auxiliary maintenance assemblies (15). The other end of the auxiliary maintenance assembly (15) is fixedly connected to the No. 2 three-way valve (14). Fixed magnets (17) located on one side of the auxiliary maintenance assembly (15) are fixedly installed in the middle positions of the upper and lower ends of the forward heat exchange plate (11) and the reverse heat exchange plate (12). The top of the water supply assembly (8) is connected to the outside The hot water inlet pipe (3) and the hot water outlet pipe (4) are connected to the water pump; the upper and lower ends of the left side of the forward heat exchange plate (11) and the reverse heat exchange plate (12) are respectively fixedly connected to a hot water inlet pipe (3) and a hot water outlet pipe (4); the upper and lower ends of the right side of the forward heat exchange plate (11) and the reverse heat exchange plate (12) are respectively fixedly connected to a cold water outlet pipe (6) and a cold water inlet pipe (5); the hot water inlet pipe (3) and the hot water outlet pipe (4) are respectively connected to the low-temperature evaporator body (2); and the cold water inlet pipe (5) and the cold water outlet pipe (6) are respectively connected to an external cold water pipeline.

2. The low-temperature evaporator with optimized heat exchange structure according to claim 1, characterized in that: Locking bolts (10) are installed on the left and right sides of the two locking cover plates (9), and the two locking cover plates (9) are locked with each other through the locking bolts (10) and the internal forward heat exchange plate (11) and reverse heat exchange plate (12).

3. The low-temperature evaporator with optimized heat exchange structure according to claim 2, characterized in that: The guide locking member (7) comprises a guide slider (701), and the two guide sliders (701) are respectively movably engaged with the locking cover plate (9) and the upper and lower ends of the forward heat exchange plate (11) and the reverse heat exchange plate (12); cleaning pipes (702) are fixedly installed at equal distances inside the guide slider (701); the bottom end of the cleaning pipe (702) is located between the two forward heat exchange plates (11) and the reverse heat exchange plate (12); and the other end of the cleaning pipe (702) is connected to the auxiliary maintenance component (15).

4. The low-temperature evaporator with optimized heat exchange structure according to claim 1, characterized in that: The water supply assembly (8) comprises a No. 1 three-way valve (801), the top end of the No. 1 three-way valve (801) is connected to an external water pump, the left and right ends of the No. 1 three-way valve (801) are fixedly connected to a water pipe (802), the other end of the water pipe (802) is fixedly connected to a distribution box (803), and the other end of the distribution box (803) is connected to the No. 2 three-way valve (14).

5. The low-temperature evaporator with optimized heat exchange structure according to claim 1, characterized in that: The heat exchange assembly (13) comprises a sealing ring (131), one end of which is connected to the right side of the forward heat exchange plate (11) and the reverse heat exchange plate (12); the heat exchange assembly (13) further comprises an auxiliary heat exchange tube (132) located on the inner side of the sealing ring (131), one end of which is connected between the forward heat exchange plate (11) and the reverse heat exchange plate (12); a baffle (133) is movably clamped at the top end of the auxiliary heat exchange tube (132).

6. The low-temperature evaporator with optimized heat exchange structure according to claim 5, characterized in that: The baffle (133) slides forward and backward relative to the auxiliary heat exchange tube (132); a distribution groove (134) adapted to the inlet of the auxiliary heat exchange tube (132) is provided at the top end of the baffle (133); when the baffle (133) is completely located inside the sealing ring (131), the distribution groove (134) is located directly above the inlet of the auxiliary heat exchange tube (132); and the other end of the baffle (133) is connected to the distribution assembly (16).

7. The low-temperature evaporator with optimized heat exchange structure according to claim 6, characterized in that: The distribution component (16) comprises a temporary storage tube (161), one end of the temporary storage tube (161) away from the heat exchange component (13) is connected to the No. 2 three-way valve (14), a second piston plate (162) is movably sleeved inside the temporary storage tube (161), one end of the second piston plate (162) away from the No. 2 three-way valve (14) is fixedly mounted with the temporary storage tube (161), one end of the second piston plate (162) away from the No. 2 three-way valve (14) is fixedly mounted with a second piston rod (163), the other end of the second piston rod (163) passes through the temporary storage tube (161) and is connected to the baffle (133), and a return spring (164) is fixedly connected between the second piston plate (162) and the temporary storage tube (161).

8. The low-temperature evaporator with optimized heat exchange structure according to claim 3, characterized in that: The auxiliary maintenance component (15) includes a regulating tube (151), one end of the regulating tube (151) away from the guide locking member (7) is fixedly connected to a pressure tube (152), the other end of the pressure tube (152) is connected to the No. 2 three-way valve (14), the inside of the regulating tube (151) is movably sleeved with a first piston plate (153), and the end of the first piston plate (153) close to the guide locking member (7) is fixedly connected to a first piston rod (154) located inside the regulating tube (151).

9. The low-temperature evaporator with optimized heat exchange structure according to claim 8, characterized in that: One end of the first piston rod (154) away from the pressure tube (152) passes through one end of the regulating tube (151) and is fixedly connected to a movable magnet (157); the outer side surface of the first piston rod (154) is movably sleeved with a return spring (155); the left and right ends of the return spring (155) are respectively connected to one end of the inner cavity of the regulating tube (151) and one end of the first piston plate (153).

10. The low-temperature evaporator with optimized heat exchange structure according to claim 9, characterized in that: A drain valve (156) is fixedly connected to one side of the top end of the regulating tube (151) near the guide locking member (7), and the other end of the drain valve (156) is connected to the cleaning tube (702). When the return spring (155) is compressed to the limit state, the movable magnet (157) is located between the two fixed magnets (17), and the first piston plate (153) is located at the front end of the drain valve (156), and the magnetic pole directions of the left and right ends of the movable magnet (157) are the same as the magnetic pole directions of the fixed magnet (17).

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