A wide temperature range and low noise vapor recompression heat pump

Abstract

This invention discloses a wide-temperature-range, low-noise vapor recompression heat pump, relating to the field of heat pump system technology. The vapor recompression heat pump includes an evaporator, a regulating device, a generating device, a heat exchanger, and an absorber. The evaporator and absorber are connected by pipes. The evaporator supplies refrigerant vapor to the absorber. The absorber has a medium inlet and a medium outlet on one side, and its bottom outlet is connected to the heat exchanger. The generating device supplies refrigerant liquid to the evaporator. Its bottom outlet is also connected to the heat exchanger. The evaporator includes a shell, a flow distribution assembly, and a reversing plate. The shell has an evaporation chamber, and the flow distribution assembly is placed inside the evaporation chamber. The flow distribution assembly adjusts the heat exchange stroke of the heat source through the regulating device. The reversing plate has several sets, and the reversing plate has reversing grooves arranged in an arc shape.

Description

Technical Field

[0001] This invention relates to the field of heat pump system technology, specifically a wide-temperature-range, low-noise vapor recompression heat pump. Background Technology

[0002] In recent years, with the increasing awareness of environmental protection, optimizing high-pollution and high-energy-consuming processes in the industrial chain has become an urgent need. In particular, the production processes in industries such as metallurgy and chemicals generate a large amount of waste heat. Directly discharging this heat not only causes enormous waste but also has a certain degree of adverse impact on the environment.

[0003] Thermal steam recompression technology aims to recompress steam, fully utilizing its latent heat and improving energy efficiency through heat recovery. However, current steam reuse technologies are still imperfect. Due to the rapid and efficient heat exchange of high-temperature steam, most existing heat pump systems are only suitable for high-temperature steam. Meanwhile, medium- and low-temperature steam has a wider threshold, resulting in low recovery efficiency and a lack of effective recovery for medium- and low-temperature steam.

[0004] In addition, most existing heat pump systems use a fixed-stroke design for heat exchange, which results in low recovery efficiency for steam over a wide temperature range. Summary of the Invention

[0005] The purpose of this invention is to provide a wide-temperature-range, low-noise vapor recompression heat pump to solve the problems mentioned in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wide-temperature-range, low-noise vapor recompression heat pump includes an evaporator, a regulating device, a generating device, a heat exchanger, and an absorber. The evaporator and absorber are connected by pipes. The evaporator supplies refrigerant vapor to the absorber. The absorber has a medium inlet and a medium outlet on one side, and its bottom outlet is connected to the heat exchanger. The generating device supplies refrigerant liquid to the evaporator, and its bottom outlet is connected to the heat exchanger. The evaporator includes a shell, a flow distribution assembly, and a reversing plate. The shell has an evaporation chamber, and the flow distribution assembly is placed inside the evaporation chamber. The flow distribution assembly adjusts the heat exchange stroke of the heat source through the regulating device. The reversing plate has several sets, and the reversing plate has reversing grooves arranged in an arc shape.

[0008] A vapor recompression heat pump recovers heat from a medium- and low-temperature heat source. The generating unit supplies refrigerant liquid to the evaporating unit. The refrigerant liquid enters the evaporation chamber of the shell, where it absorbs heat from the medium- and low-temperature heat source to generate refrigerant vapor. This vapor is then transported through pipes to the absorber, which can contain a concentrated lithium bromide solution. The absorber releases heat by absorbing the refrigerant vapor, thus heating the medium to be heated. The medium to be heated flows through the absorber's inlet and outlet, utilizing either tubular or plate heat exchangers. Heat is raised through heat conduction and radiation, thereby recovering heat. The evaporation chamber is equipped with a flow-dividing component. When recovering heat from a wide-temperature-range heat source, due to the varying temperatures of the heat sources, lower-temperature heat sources release less heat during heat exchange, while higher-temperature heat sources release more heat. Based on the heat source temperature, the flow-dividing component adjusts the heat exchange stroke of the heat source, improving the recovery quality of high-temperature heat sources and simultaneously increasing the recovery efficiency of low-temperature heat sources, while reducing the stroke length where there is no significant heat exchange. By incorporating a reversing plate, when the refrigerant liquid enters the evaporation chamber, it is guided through an arc-shaped reversing groove, reducing the vertical impact stroke and thus lowering noise.

[0009] Furthermore, a heat source outlet and a heat source inlet are arranged sequentially from top to bottom on one side of the shell. The flow distribution assembly includes a flow distribution pipe, a heat exchange pipe, and a flow guide pipe. The first end of the flow distribution pipe is connected to the heat source inlet, and the last end of the flow distribution pipe is connected to the heat exchange pipe. A steam outlet is provided on the shell. The heat exchange pipe is connected to the heat source outlet. Several flow distribution channels are provided on the flow distribution pipe. The last end of the flow distribution channel is connected to the flow guide pipe. Multiple horizontal flow channels are arranged in the vertical direction of the heat exchange pipe. Several flow distribution ports are provided on the heat exchange pipe. The last ends of several flow guide pipes are sequentially connected to flow distribution ports at different levels.

[0010] The regulating device includes a sensing component, and a main channel is provided on the split pipe. The sensing component is connected to the main channel, and the sensing component is used to adjust the angle of the recompression heat source jet.

[0011] By setting up a heat source inlet and outlet, the heat source is guided. When the heat source enters the distribution pipe in the evaporation chamber, the jet angle of the heat source is adjusted by the sensing component. Different jet angles result in different distribution channels. The ends of several distribution channels are connected to the distribution ports on the heat exchange tubes through the guide pipes. The heat exchange tubes are serpentine tubes with multiple horizontal channels arranged sequentially from top to bottom. Each horizontal channel corresponds to a distribution port. When the temperature is higher, the heat source is sent to the lower level of the horizontal channel through the guide pipe, thereby improving the recovery quality and preventing waste.

[0012] Furthermore, the sensing component includes a first temperature measuring element, a second temperature measuring element, a flow divider plate, and a rocker plate. A bypass channel is provided on the flow divider pipe, which is connected to the main flow channel. The flow divider plate is located at the inlet of the bypass channel, and the upper end of the flow divider plate is inserted into the main flow channel. The flow divider plate is arranged at an angle, with the upper end of the flow divider plate facing the heat source inlet. The first and second temperature measuring elements are arranged in an arc shape and are fastened together. The two ends of the first and second temperature measuring elements are fastened to the bypass channel respectively. The rocker plate is rotatably connected to the main flow channel. The upper end of the first temperature measuring element abuts against the back of the rocker plate. The jet direction of the rocker plate is towards the inlet of the flow divider channel. The flow divider channel near the heat source inlet is connected to the lowest flow divider port.

[0013] By setting up a flow divider to divert the heat source into the bypass channel, the heat source comes into contact with the first and second temperature measuring plates. Since the first and second temperature measuring plates are made of materials with different coefficients of thermal expansion (e.g., the first temperature measuring plate has a higher coefficient of thermal expansion than the second), and are arranged in an arc shape with the first temperature measuring plate on the outer ring and the second temperature measuring plate on the inner ring, the upper end of the first temperature measuring plate abuts against the rocker plate. When the heat source enters the bypass channel, it exchanges heat with the first and second temperature measuring plates, causing them to expand due to heat. Because both ends of the first and second temperature measuring plates are fixed within the bypass channel, they deform upwards. During this upward deformation, the first temperature measuring plate rotates, adjusting its tilt angle and thus the direction of the heat source jet. The higher the temperature, the greater the deformation of the first temperature measuring plate, the greater the tilt angle of the jet direction, and the closer it is to the heat source inlet. This allows the heat source to connect to a lower-level flow divider through the diversion pipe, resulting in a longer heat exchange path and improved heat recovery quality.

[0014] Furthermore, the regulating device also includes a flow-blocking component, which includes an electromagnet and a flow-blocking plate. Several flow-blocking grooves are provided on the diversion pipe. The diversion channel and the flow-blocking grooves are arranged sequentially along the flow direction of the recompression heat source in the main channel. The electromagnet is located in the flow-blocking groove. The flow-blocking plate and the flow-blocking groove are slidably connected. The flow-blocking plate is made of magnetic material.

[0015] When the flow is cut off: the electromagnet and the baffle plate have the same magnetic poles at their opposite ends, and the lower end of the baffle plate is in contact with the bottom surface of the main flow channel;

[0016] During reset: the electromagnet and the baffle plate are opposite magnetic poles.

[0017] By incorporating a flow-blocking component, the main flow path is interrupted during jet reversal of the heat source. A power supply powers the electromagnet, and the electromagnet and the flow-blocking plate form like poles at their opposing ends. The flow-blocking plate descends and contacts the bottom surface of the main flow path, thus interrupting the flow and improving reversal accuracy. During reset, a reverse current is input to the electromagnet, causing the electromagnet and the flow-blocking plate to form unlike poles at their opposing ends. Under the attraction of these magnetic poles, the flow-blocking plate moves upward, achieving automatic reset.

[0018] Furthermore, the flow-blocking assembly also includes a sealing plate with a rotating groove. The sealing plate and the rotating groove are rotatably connected. The rotation center of the sealing plate is eccentrically set, and the cross-sectional area of ​​the upper end of the rotation center of the sealing plate is matched with the cross-sectional area of ​​the inlet of the diversion channel.

[0019] A transmission surface is provided on the sealing plate. Due to the offset setting of the rotation center of the sealing plate, the sealing plate is in an inclined state when the lower end of the baffle plate abuts against the bottom surface of the main channel. When the flow is no longer needed at this point, the baffle plate moves up and the transmission surface abuts against the wall between the diversion channel and the interception groove. Through transmission, the sealing plate is made to be in a horizontal state, thereby blocking the inlet of the diversion channel at this point and improving the jet accuracy.

[0020] Furthermore, the sensing component also includes a coil and a magnetic column. The upper end of the magnetic column is fastened to the second temperature measuring plate. The lower end of the bypass channel is provided with a sealing groove, and the coil is placed in the sealing groove. The lower end of the magnetic column is inserted into the inner coil. The magnetic column and the coil constitute a temperature measuring circuit, and several electromagnets are connected to the temperature measuring circuit through gaps.

[0021] A magnetic column is set up, which moves with the second temperature measuring plate. The coil cuts the magnetic field lines, generating an induced current in the temperature measuring circuit. The magnitude of the induced current is positively correlated with the magnitude of the deformation of the second temperature measuring plate. That is, the higher the temperature, the greater the deformation of the second temperature measuring plate, and the greater the induced current. The induced current in the temperature measuring circuit is divided into intervals and corresponding to electromagnets one by one. The larger the induced current, the more the electromagnet near the heat source inlet conducts, and then it conducts to the subsequent circuits in sequence. The current in the temperature measuring circuit is used to control the input current on the electromagnets.

[0022] As an optimization, the evaporation device also includes a circulation pump and nozzles. The circulation pump is connected to the bottom of the evaporation chamber, and several nozzles are arranged along the upper end of the evaporation chamber. The outlet of the circulation pump and the inlet pipe of the nozzles are connected. By setting up the circulation pump, the liquid in the evaporation chamber is locally circulated and pressurized and transported, and then sprayed through the nozzles, thereby increasing the contact area with the heat exchange tubes and improving the heat exchange efficiency.

[0023] As an optimization, the generating device includes a generator, a condenser, and a diversion pump. One side of the generator is connected to the condenser via piping, the condenser is connected to the diversion pump via piping, and the outlet of the diversion pump is connected to one side of the evaporation chamber via piping. By setting up the generator, low-pressure refrigerant vapor is generated and transported to the condenser. The condenser completely condenses the vapor, allowing the latent heat of the vapor to be carried away by cooling water. The resulting refrigerant liquid is pumped into the evaporation chamber by the diversion pump and circulated by a circulation pump. High-pressure refrigerant vapor is formed in the evaporation chamber and enters the absorber, where it mixes with a concentrated lithium bromide solution to form a dilute solution, which is then used to heat the medium to be heated.

[0024] As an optimization, the solutions at the lower outlet of the generator and the lower outlet of the absorber exchange heat in a heat exchanger. The heated dilute solution is pumped into the heat exchanger, while the concentrated solution formed by the refrigerant generating low-pressure vapor in the generator is heated by a heat source and also enters the heat exchanger. The two refrigerant streams exchange heat, with the preceding dilute solution entering the generator to form continuous low-pressure refrigerant vapor, and the subsequent concentrated solution being pumped into the absorber to mix with the high-temperature, high-pressure vapor. The heat generated is used to raise the temperature of the medium to be heated.

[0025] Compared with the prior art, the beneficial effects of this invention are: by adjusting the heat exchange stroke of the heat source through the diversion component, the recovery quality of the high-temperature heat source is improved, while the recovery efficiency of the low-temperature heat source is increased, and the stroke length without significant heat exchange is reduced; by setting a reversing plate, when the refrigerant liquid enters the evaporation chamber, it is guided by the arc-shaped reversing groove, reducing the vertical impact stroke and thus reducing noise; by adjusting the jet angle of the heat source through the sensing component, different jet angles result in different diversion channels; the ends of several diversion channels are connected to the diversion ports on the heat exchange tube through the guide pipe; the heat exchange tube is a serpentine tube, with multiple horizontal flow channels arranged sequentially from top to bottom, each horizontal flow channel corresponding to a diversion port; the higher the temperature... At the same time, the heat source is sent into the lower-level horizontal flow channel through the diversion pipe, thereby improving the recovery quality and preventing waste. When the heat source enters the bypass flow channel, it exchanges heat with the first and second temperature measuring plates. The first and second temperature measuring plates expand when heated. Since the two ends of the first and second temperature measuring plates are fixed in the bypass flow channel, they deform upward. During the upward deformation of the first temperature measuring plate, it drives the rocker to rotate. Adjusting the tilt angle of the rocker adjusts the jet direction of the heat source. The higher the temperature, the greater the deformation of the first temperature measuring plate and the greater the tilt angle of the jet direction. The closer it is to the heat source inlet, the longer the heat exchange stroke is when connected to the lower-level branch port through the diversion pipe, thus improving the heat recovery quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the refrigerant liquid circulation of the present invention;

[0028] Figure 3 This is a schematic diagram of the evaporation device structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the shunt component structure of the present invention;

[0030] Figure 5 for Figure 3 A magnified view of a portion of the view;

[0031] Figure 6 This is a heat exchange flow diagram of the concentrated solution in this invention;

[0032] Figure 7 This is a diagram showing the heat transfer flow of the dilute solution according to the present invention.

[0033] In the diagram: 1. Evaporator; 11. Shell; 111. Evaporation chamber; 112. Heat source inlet; 113. Heat source outlet; 114. Steam outlet; 12. Circulation pump; 13. Diverter assembly; 131. Diverter pipe; 1311. Diverter channel; 1312. Flow interceptor; 1313. Main flow channel; 1314. Bypass channel; 132. Heat exchanger tube; 1321. Diverter port; 133. Drain pipe; 14. Nozzle; 15. 1. Flow control plate; 2. Adjustment device; 21. Sensing component; 211. First temperature measuring element; 212. Second temperature measuring element; 213. Flow divider; 214. Rocker; 215. Coil; 216. Magnetic column; 22. Flow blocking component; 221. Electromagnet; 222. Baffle plate; 2221. Rotary groove; 223. Sealing plate; 3. Generating device; 31. Generator; 32. Condenser; 33. Flow pump; 4. Heat exchanger; 5. Absorber. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example: Figures 1-7 As shown, the present invention provides a wide-temperature-range, low-noise vapor recompression heat pump technology solution.

[0036] A wide-temperature-range, low-noise vapor recompression heat pump includes an evaporator 1, a regulating device 2, a generating device 3, a heat exchanger 4, and an absorber 5. The evaporator 1 and the absorber 5 are connected by pipes. The evaporator 1 supplies refrigerant vapor to the absorber 5. The absorber 5 has a medium inlet and a medium outlet on one side. The bottom outlet of the absorber 5 is connected to the heat exchanger 4. The generating device 3 supplies refrigerant liquid to the evaporator 1. The bottom outlet of the generating device 3 is connected to the heat exchanger 4. The evaporator 1 includes a shell 11, a flow distribution assembly 13, and a reversing plate 15. The shell 11 has an evaporation chamber 111. The flow distribution assembly 13 is placed in the evaporation chamber 111. The flow distribution assembly 13 adjusts the heat exchange stroke of the heat source through the regulating device 2. The reversing plate 15 has several sets of reversing grooves, which are arc-shaped.

[0037] Heat is recovered and utilized from a medium- and low-temperature heat source via a vapor recompression heat pump. Generating device 3 supplies refrigerant liquid to evaporator 1. The refrigerant liquid enters the evaporation chamber 111 of shell 11, where it absorbs heat from the medium- and low-temperature heat source to generate refrigerant vapor. This vapor is then transported through pipes to absorber 5, which can contain a concentrated lithium bromide solution. The absorber 5 releases heat by absorbing the refrigerant vapor, thus heating the medium to be heated. The medium to be heated flows through the medium inlet and outlet of absorber 5, employing either tubular or plate heat exchangers. Heat is recovered through heat conduction and radiation, thereby raising the temperature of the medium to be heated. A flow divider 13 is installed inside the evaporation chamber 111. When recovering heat from a heat source with a wide temperature range, due to the different temperatures of the heat sources, the low-temperature heat source releases less heat during heat exchange, while the high-temperature heat source releases more heat. According to the heat source temperature, the flow divider 13 adjusts the heat exchange stroke of the heat source to improve the recovery quality of the high-temperature heat source and improve the recovery efficiency of the low-temperature heat source, while reducing the stroke length where there is no significant heat exchange. By setting a reversing plate 15, when the refrigerant liquid enters the evaporation chamber 111, it is guided by the arc-shaped reversing groove to reduce the vertical impact stroke, thereby reducing noise.

[0038] Furthermore, a heat source outlet 113 and a heat source inlet 112 are arranged sequentially from top to bottom on one side of the shell 11. The flow distribution assembly 13 includes a flow distribution pipe 131, a heat exchange pipe 132, and a flow guide pipe 133. The first end of the flow distribution pipe 131 is connected to the heat source inlet 112, and the last end of the flow distribution pipe 131 is connected to the heat exchange pipe 132. A steam outlet 114 is provided on the shell 11. The heat exchange pipe 132 is connected to the heat source outlet 113. A plurality of flow distribution channels 1311 are provided on the flow distribution pipe 131. The last end of the flow distribution channel 1311 is connected to the flow guide pipe 133. The heat exchange pipe 132 is provided with multiple layers of horizontal flow channels in the vertical direction. A plurality of flow distribution ports 1321 are provided on the heat exchange pipe 132. The last ends of the plurality of flow guide pipes 133 are sequentially connected to flow distribution ports 1321 at different levels.

[0039] The regulating device 2 includes a sensing component 21. A main channel 1313 is provided on the split pipe 131. The sensing component 21 is connected to the main channel 1313. The sensing component 21 is used to adjust the angle of the recompression heat source jet.

[0040] By setting up a heat source inlet 112 and a heat source outlet 113, the heat source is guided. When the heat source enters the diversion pipe 131 in the evaporation chamber 111, the jet angle of the heat source is adjusted by the sensing component 21. Different jet angles result in different diversion channels 1311. The ends of several diversion channels 1311 are connected to the diversion ports 1321 on the heat exchange tube 132 through the guide pipe 133. The heat exchange tube 132 is a serpentine tube with multiple horizontal channels arranged from top to bottom. Each horizontal channel corresponds to a diversion port 1321. When the temperature is higher, the heat source is sent to the lower level of the horizontal channel through the guide pipe 133, thereby improving the recovery quality and preventing waste.

[0041] Furthermore, the sensing component 21 includes a first temperature measuring element 211, a second temperature measuring element 212, a flow divider 213, and a rocker plate 214. A bypass channel 1314 is provided on the flow divider pipe 131, which is connected to the main flow channel 1313. The flow divider 213 is located at the inlet of the bypass channel 1314, with its upper end inserted into the main flow channel 1313. The flow divider 213 is arranged at an angle, with its upper end facing the heat source inlet 112. The first temperature measuring element 211 and the second temperature measuring element 212... The temperature measuring element 212 is arranged in an arc shape. The first temperature measuring element 211 and the second temperature measuring element 212 are fastened together. The two ends of the first temperature measuring element 211 and the second temperature measuring element 212 are fastened to the bypass channel 1314 respectively. The rocker plate 214 and the main channel 1313 are rotatably connected. The upper end of the first temperature measuring element 211 abuts against the back of the rocker plate 214. The jet direction of the rocker plate 214 is towards the inlet of the branch channel 1311. The branch channel 1311 near the heat source inlet 112 is connected to the bottommost branch port 1321.

[0042] The heat source is diverted into the bypass channel 1314 by a diversion plate 213. When the heat source comes into contact with the first temperature measuring plate 211 and the second temperature measuring plate 212, since the first temperature measuring plate 211 and the second temperature measuring plate 212 are made of materials with different coefficients of thermal expansion (for example, the coefficient of thermal expansion of the first temperature measuring plate 211 is greater than that of the second temperature measuring plate 212), the first temperature measuring plate 211 is located on the outer ring and the second temperature measuring plate 212 is located on the inner ring through an arc-shaped arrangement. The upper end of the first temperature measuring plate 211 abuts against the rocker plate 214. When the heat source enters the bypass channel 1314, it comes into contact with the first temperature measuring plate 211 and the second temperature measuring plate 212. In heat exchange, the first temperature measuring plate 211 and the second temperature measuring plate 212 expand due to heat. Since the two ends of the first temperature measuring plate 211 and the second temperature measuring plate 212 are fixed in the bypass channel 1314, they deform upward. During the upward deformation of the first temperature measuring plate 211, it drives the rocker plate 214 to rotate, and adjusts the tilt angle of the rocker plate 214, thereby adjusting the jet direction of the heat source. The higher the temperature, the greater the deformation of the first temperature measuring plate 211, the greater the tilt angle of the jet direction, and the closer it is to the heat source inlet 112. Thus, it is connected to the lower level of the diversion port 1321 through the diversion pipe 133, the longer the heat exchange journey, and the better the heat recovery quality.

[0043] Furthermore, the regulating device 2 also includes a flow-blocking component 22, which includes an electromagnet 221 and a flow-blocking plate 222. The diversion pipe 131 is provided with a plurality of flow-blocking grooves 1312. The diversion channel 1311 and the flow-blocking grooves 1312 are arranged sequentially along the flow direction of the recompression heat source in the main channel 1313. The electromagnet 221 is located in the flow-blocking groove 1312. The flow-blocking plate 222 and the flow-blocking groove 1312 are slidably connected. The flow-blocking plate 222 is made of magnetic material.

[0044] When the flow is cut off: the opposite ends of the electromagnet 221 and the baffle plate 222 are the same magnetic poles, and the lower end of the baffle plate 222 is in contact with the bottom surface of the main flow channel 1313;

[0045] During reset: the opposite ends of electromagnet 221 and baffle plate 222 are opposite magnetic poles.

[0046] By setting the flow-cutting component 22, the main flow channel 1313 is cut off when the heat source is redirected. Power is supplied to the electromagnet 221, and the electromagnet 221 and the flow-blocking plate 222 form like magnetic poles at their opposing ends. The flow-blocking plate 222 moves downward and contacts the bottom surface of the main flow channel 1313, thus cutting off the flow and improving the redirection accuracy. During reset, a reverse current is input to the electromagnet 221, causing the electromagnet 221 and the flow-blocking plate 222 to form unlike magnetic poles at their opposing ends. Under the attraction of the magnetic poles, the flow-blocking plate 222 moves upward, thereby automatically resetting.

[0047] Furthermore, the flow-blocking assembly 22 also includes a sealing plate 223. The flow-blocking plate 222 is provided with a rotating groove 2221. The sealing plate 223 and the rotating groove 2221 are rotatably connected. The rotation center of the sealing plate 223 is eccentrically set. The upper cross-sectional area of ​​the rotation center of the sealing plate 223 is adapted to the cross-sectional area of ​​the inlet of the diversion channel 1311.

[0048] A transmission surface is provided on the sealing plate 223. Due to the offset setting of the rotation center of the sealing plate 223, the sealing plate 223 is in an inclined state when the lower end of the baffle plate 222 abuts against the bottom surface of the main channel 1313. When the flow is no longer needed at this point, the baffle plate 222 moves upward and the transmission surface abuts against the wall between the diversion channel 1311 and the intercepting groove 1312. Through transmission, the sealing plate 223 is made to be in a horizontal state, thereby blocking the inlet of the diversion channel 1311 at this point and improving the jet accuracy.

[0049] Furthermore, the sensing component 21 also includes a coil 215 and a magnetic column 216. The upper end of the magnetic column 216 is fastened to the second temperature measuring plate 212. The lower end of the bypass channel 1314 is provided with a sealing groove. The coil 215 is placed in the sealing groove. The lower end of the magnetic column 216 is inserted into the inner ring of the coil 215. The magnetic column 216 and the coil 215 constitute a temperature measuring circuit. Several electromagnets 221 are connected to the temperature measuring circuit through gaps.

[0050] A magnetic column 216 is set up, which moves with the second temperature measuring plate 212. The coil 215 cuts the magnetic field lines, generating an induced current in the temperature measuring circuit. The magnitude of the induced current is positively correlated with the magnitude of the deformation of the second temperature measuring plate 212. That is, the higher the temperature, the greater the deformation of the second temperature measuring plate 212 and the greater the induced current. The induced current in the temperature measuring circuit is divided into intervals and corresponds one-to-one with the electromagnet 221. The larger the induced current, the more the electromagnet 221 near the heat source inlet 112 is turned on, and then it is turned on in turn with the subsequent circuits. The current in the temperature measuring circuit is used to control the input current on the electromagnet 221.

[0051] As an optimization, the evaporation device 1 also includes a circulation pump 12 and nozzles 14. The circulation pump 12 is connected to the bottom of the evaporation chamber 111, and several nozzles 14 are arranged along the upper end of the evaporation chamber 111. The outlet of the circulation pump 12 and the inlet pipe of the nozzles 14 are connected. By setting up the circulation pump 12, the liquid in the evaporation chamber 111 is locally circulated and pressurized and transported, and then sprayed through the nozzles 14, thereby increasing the contact area with the heat exchange tube 132 and improving the heat exchange efficiency.

[0052] As an optimization, the generating device 3 includes a generator 31, a condenser 32, and a diversion pump 33. One side of the generator 31 is connected to the condenser 32 by a pipe, the condenser 32 is connected to the diversion pump 33 by a pipe, and the outlet of the diversion pump 33 is connected to one side of the evaporation chamber 111 by a pipe. By setting up the generator 31, low-pressure refrigerant vapor is generated and transported to the condenser 32. The vapor is completely condensed by the condenser 32, and the latent heat of the vapor is carried away by the cooling water. The resulting refrigerant liquid is pumped into the evaporation chamber 111 by the diversion pump 33 and circulated by the circulation pump 12. High-pressure refrigerant vapor is formed in the evaporation chamber and enters the absorber 5, where it mixes with the concentrated lithium bromide solution to form a dilute solution, which is used to heat the medium to be heated.

[0053] As an optimization, the solutions at the lower outlet of generator 31 and absorber 5 exchange heat in heat exchanger 4. The heated dilute solution is pumped into heat exchanger 4, while the concentrated solution formed by the refrigerant generating low-pressure steam in generator 31 is heated by a heat source and also enters heat exchanger 4. The two refrigerants exchange heat, with the preceding dilute solution entering generator 31 to form continuous low-pressure refrigerant steam, and the subsequent concentrated solution being pumped into absorber 5 to mix with the high-temperature, high-pressure steam. The heat generated is used to heat the medium to be heated.

[0054] The working principle of this invention is as follows: The heat exchange stroke of the heat source is adjusted by the diversion component 13, improving the recovery quality of the high-temperature heat source and simultaneously increasing the recovery efficiency of the low-temperature heat source, while reducing the stroke length where there is no significant heat exchange. By setting a reversing plate 15, when the refrigerant liquid enters the evaporation chamber 111, it is guided by an arc-shaped reversing groove, reducing the vertical impact stroke and thus reducing noise. The jet angle of the heat source is adjusted by the sensing component 21. Different jet angles result in different entry points into the diversion channels 1311. The ends of several diversion channels 1311 are connected to the diversion ports 1321 on the heat exchange tube 132 via the guide pipe 133. The heat exchange tube 132 is a serpentine tube with multiple horizontal flow channels arranged sequentially from top to bottom. Each horizontal flow channel corresponds to a diversion port 1321. At higher temperatures, the heat source is diverted through the guide pipe 133. The heat source is fed into a lower-level horizontal flow channel to improve the recovery quality and prevent waste. When the heat source enters the bypass flow channel 1314, it exchanges heat with the first temperature measuring plate 211 and the second temperature measuring plate 212. The first temperature measuring plate 211 and the second temperature measuring plate 212 expand when heated. Since the two ends of the first temperature measuring plate 211 and the second temperature measuring plate 212 are fixed in the bypass flow channel 1314, they undergo upward deformation. During the upward deformation of the first temperature measuring plate 211, it drives the rocker plate 214 to rotate. Adjusting the tilt angle of the rocker plate 214 adjusts the jet direction of the heat source. The higher the temperature, the greater the deformation of the first temperature measuring plate 211 and the greater the tilt angle of the jet direction. The closer it is to the heat source inlet 112, the longer the heat exchange stroke is connected to the lower-level diversion port 1321 through the diversion pipe 133, thus improving the heat recovery quality.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wide-temperature-range, low-noise vapor recompression heat pump, characterized in that: The vapor recompression heat pump includes an evaporator (1), a regulating device (2), a generating device (3), a heat exchanger (4), and an absorber (5). The evaporator (1) and the absorber (5) are connected by pipes. The evaporator (1) supplies refrigerant vapor to the absorber (5). The absorber (5) has a medium inlet and a medium outlet on one side. The bottom outlet of the absorber (5) is connected to the heat exchanger (4). The generating device (3) supplies refrigerant liquid to the evaporator (1). The bottom outlet of the generating device (3) is connected to the heat exchanger (4). The evaporation device (1) includes a shell (11), a flow distribution assembly (13) and a reversing plate (15). The shell (11) is provided with an evaporation chamber (111). The flow distribution assembly (13) is placed in the evaporation chamber (111). The flow distribution assembly (13) adjusts the heat exchange stroke of the heat source through the adjusting device (2). The reversing plate (15) is provided with several sets. The reversing plate (15) is provided with a reversing groove. The reversing groove is arc-shaped. The shell (11) has a heat source outlet (113) and a heat source inlet (112) arranged sequentially from top to bottom on one side. The diversion assembly (13) includes a diversion pipe (131), a heat exchange pipe (132), and a guide pipe (133). The first end of the diversion pipe (131) is connected to the heat source inlet (112), and the second end of the diversion pipe (131) is connected to the heat exchange pipe (132). The shell (11) has a steam outlet (114), and the heat exchange pipe... (132) and heat source outlet (113) are connected. The branch pipe (131) is provided with several branch channels (1311). The end of the branch channel (1311) is connected to the guide pipe (133). The heat exchange pipe (132) is provided with multiple horizontal channels in the vertical direction. The heat exchange pipe (132) is provided with several branch ports (1321). The ends of several guide pipes (133) are connected to branch ports (1321) at different levels in sequence. The regulating device (2) includes a sensing component (21), and a main channel (1313) is provided on the split pipe (131). The sensing component (21) is connected to the main channel (1313), and the sensing component (21) is used to adjust the angle of the recompression heat source jet. The sensing component (21) includes a first temperature measuring element (211), a second temperature measuring element (212), a flow divider (213), and a rocker plate (214). A bypass channel (1314) is provided on the flow divider pipe (131), and the bypass channel (1314) is connected to the main flow channel (1313). The flow divider (213) is located at the inlet of the bypass channel (1314), with its upper end inserted into the main flow channel (1313). The flow divider (213) is arranged at an angle, with its upper end facing the heat source inlet (112). The first temperature measuring element (211) and the second temperature measuring element (212) are connected to the main flow channel (1313). Two temperature measuring plates (212) are arranged in an arc shape. The first temperature measuring plate (211) and the second temperature measuring plate (212) are fastened together. The two ends of the first temperature measuring plate (211) and the second temperature measuring plate (212) are fastened together with the bypass channel (1314). The rocker plate (214) and the main channel (1313) are rotatably connected. The upper end of the first temperature measuring plate (211) abuts against the back of the rocker plate (214). The jet direction of the rocker plate (214) is towards the inlet of the branch channel (1311). The branch channel (1311) near the heat source inlet (112) is connected to the bottommost branch port (1321).

2. The wide-temperature-range, low-noise vapor recompression heat pump according to claim 1, characterized in that: The regulating device (2) further includes a flow-blocking component (22), which includes an electromagnet (221) and a flow-blocking plate (222). The diversion pipe (131) is provided with a plurality of flow-blocking grooves (1312). The diversion channel (1311) and the flow-blocking grooves (1312) are arranged sequentially along the flow direction of the recompression heat source in the main channel (1313). The electromagnet (221) is located in the flow-blocking groove (1312). The flow-blocking plate (222) and the flow-blocking groove (1312) are slidably connected. The flow-blocking plate (222) is made of magnetic material. When the flow is cut off: the electromagnet (221) and the flow baffle (222) have the same magnetic poles at their opposite ends, and the lower end of the flow baffle (222) is in contact with the bottom surface of the main flow channel (1313); During reset: the electromagnet (221) and the baffle plate (222) are opposite magnetic poles at their opposite ends.

3. A wide-temperature-range, low-noise vapor recompression heat pump according to claim 2, characterized in that: The flow-blocking assembly (22) also includes a sealing plate (223). The flow-blocking plate (222) is provided with a rotating groove (2221). The sealing plate (223) and the rotating groove (2221) are rotatably connected. The rotation center of the sealing plate (223) is eccentrically set. The cross-sectional area of ​​the upper end of the rotation center of the sealing plate (223) is adapted to the cross-sectional area of ​​the inlet of the diversion channel (1311).

4. A wide-temperature-range, low-noise vapor recompression heat pump according to claim 3, characterized in that: The sensing component (21) also includes a coil (215) and a magnetic column (216). The upper end of the magnetic column (216) is fastened to the second temperature measuring plate (212). The lower end of the bypass channel (1314) is provided with a sealing groove. The coil (215) is placed in the sealing groove. The lower end of the magnetic column (216) is inserted into the inner ring of the coil (215). The magnetic column (216) and the coil (215) constitute a temperature measuring circuit. Several electromagnets (221) are connected to the temperature measuring circuit.

5. A wide-temperature-range, low-noise vapor recompression heat pump according to claim 4, characterized in that: The evaporation device (1) also includes a circulation pump (12) and a nozzle (14). The circulation pump (12) is connected to the bottom of the evaporation chamber (111). Several nozzles (14) are provided along the upper end of the evaporation chamber (111). The outlet of the circulation pump (12) and the inlet pipe of the nozzle (14) are connected.

6. A wide-temperature-range, low-noise vapor recompression heat pump according to claim 5, characterized in that: The generating device (3) includes a generator (31), a condenser (32) and a flow pump (33). One side of the generator (31) is connected to the condenser (32) via a pipe. The condenser (32) is connected to the flow pump (33) via a pipe. The outlet of the flow pump (33) is connected to one side of the evaporation chamber (111) via a pipe.

7. A wide-temperature-range, low-noise vapor recompression heat pump according to claim 6, characterized in that: The solution at the lower outlet of the generator (31) and the solution at the lower outlet of the absorber (5) exchange heat in the heat exchanger (4).

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