Waste heat utilization system

Abstract

The utility model provides a kind of waste heat utilization system, waste heat utilization system includes: first heat exchanger has the first heat exchange passage and the second heat exchange passage of mutual independence, first heat exchanger heats the second medium in the second heat exchange passage by the heat energy of the first medium in the first heat exchange passage, first heat exchange passage and second heat exchange passage are all straight-flow heat exchange passage;Air conditioning heat pump system includes the second heat exchanger and refrigerant circulation pipeline of intercommunication, second heat exchanger has the evaporation section and condensation section of intercommunication, second heat exchanger is communicated with second heat exchange passage, evaporation section is used to carry out heat exchange with the second medium in second heat exchange passage, condensation section is used to carry out heat exchange with the refrigerant in refrigerant circulation pipeline, to evaporate refrigerant from liquid state into gaseous state.By the technical scheme provided by the utility model, the heat exchanger of waste water waste heat recovery system in prior art usually has curved flow channel structure, and the problem of easy obstruction at curved flow channel can be solved.

Description

Technical Field

[0001] This utility model relates to the field of energy utilization technology, and more specifically, to a waste heat utilization system. Background Technology

[0002] In recent years, with the rapid development and continuous expansion of geothermal heating, hot spring therapy, and recreation, the waste of domestic and industrial wastewater and hot spring resources has become widespread. Hot spring enterprises rarely treat hot spring water before discharging it, and instead discharge it directly. This means that the heat contained in the water will eventually be directly dissipated into the external environment without being fully utilized, resulting in a waste of energy.

[0003] Currently, the main forms of wastewater heat recovery include water storage tanks with spiral copper tubes and coiled wastewater pools. However, these heat exchange elements have low heat exchange efficiency, easily leading to secondary waste of resources and low unit heat exchange capacity. Furthermore, their special curved flow channel structure is prone to blockage at the bends. Utility Model Content

[0004] This invention provides a waste heat recovery system to solve the problem that heat exchangers in existing wastewater waste heat recovery systems typically have a curved flow channel structure, which easily causes blockage at the curved flow channel.

[0005] This utility model provides a waste heat utilization system, which includes: an energy supply system comprising a waste heat supply component, a medium supply component, and a first heat exchanger. The first heat exchanger has a first heat exchange channel and a second heat exchange channel that are independent of each other. The two ends of the first heat exchange channel are respectively connected to the first supply port and the first return port of the waste heat supply component, and the two ends of the second heat exchange channel are respectively connected to the second supply port and the second return port of the medium supply component. The first heat exchanger heats the second medium in the second heat exchange channel with the heat energy of the first medium in the first heat exchange channel. Both the first heat exchange channel and the second heat exchange channel are direct-flow heat exchange channels. An air conditioning heat pump system is located downstream of the first heat exchanger. The air conditioning heat pump system includes a second heat exchanger and a refrigerant circulation pipeline that are interconnected. The second heat exchanger has an evaporation section and a condensation section that are interconnected. The second heat exchanger is connected to the second heat exchange channel. The evaporation section is used to exchange heat with the second medium in the second heat exchange channel, and the condensation section is used to exchange heat with the refrigerant in the refrigerant circulation pipeline to evaporate the refrigerant from a liquid state to a gaseous state.

[0006] Further, the first heat exchanger includes: a first shell having a first flow cavity; a first heat exchange structure disposed within the first flow cavity, the first heat exchange structure including a plurality of independently disposed first flat tubes, the plurality of first flat tubes being spaced apart, the first flat tubes having a plurality of independently disposed first microchannels, the first microchannels forming a second heat exchange channel, one end of each of the plurality of first microchannels being connected to a second supply port, and the other end of each of the first microchannels being connected to the second heat exchanger; and a second heat exchange structure disposed within the first flow cavity, the second heat exchange structure including a plurality of spaced fins, the second heat exchange structure including a plurality of spaced fins, the second heat exchange structure including a plurality of fins being disposed between two adjacent first flat tubes, and the second heat exchange channel being formed between two adjacent fins.

[0007] Furthermore, the inner wall of the second heat exchange channel has a recessed structure.

[0008] Furthermore, the second heat exchanger has independent third, fourth and fifth heat exchange channels. One end of the third heat exchange channel is connected to the second heat exchange channel, and the other end of the third heat exchange channel is connected to the second return port. The fourth heat exchange channel is connected to the refrigerant circulation pipeline. The fifth heat exchange channel has an evaporation section and a condensation section that are connected to each other. The evaporation section exchanges heat with the third heat exchange channel, and the condensation section exchanges heat with the fourth heat exchange channel.

[0009] Further, the second heat exchanger includes: a second shell having a second flow cavity and a third flow cavity arranged opposite to each other; a third heat exchange structure disposed within the second flow cavity, the third heat exchange structure including a plurality of parallel second flat tubes having a plurality of spaced second microchannels forming a fourth heat exchange channel; and a fourth heat exchange structure including a plurality of spaced micro heat pipes for placing heat exchange medium, the micro heat pipes having a first section and a second section connected in sequence, the first section being disposed within the second flow cavity and located between adjacent second flat tubes, the first section forming a condensation section, the second section being disposed within the third flow cavity, the second section forming an evaporation section, the micro heat pipes forming a fifth heat exchange channel, and the third heat exchange channel being formed between adjacent second sections.

[0010] Furthermore, the waste heat supply assembly includes a first supply tank, a first supply pipeline, and a first return pipeline. The first supply pipeline is located between the first supply tank and the inlet of the first heat exchange channel, and the first return pipeline is located between the outlet of the first heat exchange channel and the first supply tank. The end of the first supply pipeline forms a first supply port, and the end of the first return pipeline forms a first return port. A first filter, a first control valve, and a first water pump are sequentially arranged on the first supply pipeline. A second control valve is arranged on the first return pipeline.

[0011] Furthermore, the waste heat supply assembly also includes a first flow meter and a first pressure gauge, which are sequentially installed on the first supply pipeline, with the first flow meter located downstream of the first water pump.

[0012] Furthermore, the medium supply assembly also includes a second supply tank, a second supply pipeline, a connecting pipeline, and a second return pipeline. The second supply pipeline is located between the second supply tank and the inlet of the second heat exchange channel. The connecting pipeline is located between the outlet of the second heat exchange channel and the second heat exchanger. The second return pipeline is located between the second heat exchanger and the second supply tank. The second supply pipeline has a second supply port, and the second return pipeline has a second return port. A second filter, a third control valve, a second water pump, a second flow meter, and a second pressure gauge are sequentially arranged on the second supply pipeline. A fourth control valve is arranged on the second return pipeline.

[0013] Furthermore, the air conditioning heat pump system also includes an interconnected compressor, throttle valve, and condenser, which are sequentially connected via a refrigerant circulation pipeline.

[0014] Furthermore, the air conditioning heat pump system also includes a radiant terminal, which is connected to the condenser. The return water from the radiant terminal can exchange heat with the refrigerant in the condenser.

[0015] By applying the technical solution of this utility model, the traditional heat exchanger design, which uses a bent tube structure, is prone to accumulating impurities or forming deposits at the bends. This is especially true when the first medium discharged from the waste heat supply component is usually domestic or industrial sewage, containing a large amount of suspended solids. The narrow part of the bend is particularly prone to blockage, which not only affects the heat exchange efficiency but also increases the system's maintenance costs. The first heat exchanger in this solution uses a direct-flow heat exchange channel, meaning the first medium flows in a straight line from one end to the other without complex bends. This smoother flow of the first medium effectively avoids the problem of blockage by impurities at bends, improving heat exchange efficiency, reducing maintenance costs, and ensuring long-term stable system operation. Furthermore, the first medium exchanges heat with the second medium through the first heat exchanger, and the second medium exchanges heat with the air conditioning heat pump system through the second heat exchanger. This recovers the waste heat from the first medium, converting it into usable thermal energy for heating the medium, thus achieving efficient energy utilization. Simultaneously, the first medium only flows within the first heat exchanger, preventing blockage in the second heat exchanger. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the waste heat utilization system provided by this utility model is shown;

[0018] Figure 2A schematic diagram of the structure of the first heat exchanger provided by this utility model is shown;

[0019] Figure 3 A schematic diagram of the structure of the first flat tube provided by this utility model is shown;

[0020] Figure 4 A schematic diagram of the structure of the second heat exchanger provided by this utility model is shown.

[0021] The above figures include the following reference numerals:

[0022] 10. Waste heat supply assembly; 101. First supply port; 102. First return port; 11. First supply tank; 12. First supply pipeline; 13. First return pipeline; 14. First filter; 15. First control valve; 16. First water pump; 17. Second control valve; 18. First flow meter; 19. First pressure gauge;

[0023] 20. Medium supply assembly; 201. Second supply port; 202. Second return port; 21. Second supply tank; 22. Second supply pipeline; 23. Connecting pipeline; 24. Second return pipeline; 241. Fourth control valve; 25. Second filter; 26. Third control valve; 27. Second water pump; 28. Second flow meter; 29. ​​Second pressure gauge;

[0024] 30. First heat exchanger; 301. First heat exchange channel; 302. Second heat exchange channel; 31. First shell; 311. First inlet; 312. First outlet; 313. Second inlet; 314. Second outlet; 32. First flat tube; 33. Fin; 34. Recessed structure; 35. First insulation layer;

[0025] 40. Air conditioning heat pump system; 41. Second heat exchanger; 411. Evaporator section; 412. Condenser section; 413. Third heat exchange channel; 414. Fourth heat exchange channel; 415. Fifth heat exchange channel; 416. Second shell; 417. Second flat tube; 419. Second insulation layer;

[0026] 42. Refrigerant circulation piping; 43. Compressor; 44. Expansion valve; 45. Condenser; 46. Radiant terminal. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] like Figures 1 to 4 As shown, this embodiment of the present invention provides a waste heat utilization system, specifically including an energy supply system and an air conditioning heat pump system 40. The energy supply system includes a waste heat supply component 10, a medium supply component 20, and a first heat exchanger 30. The first heat exchanger 30 has a first heat exchange channel 301 and a second heat exchange channel 302 that are independent of each other. The two ends of the first heat exchange channel 301 are respectively connected to the first supply port 101 and the first return port 102 of the waste heat supply component 10. The two ends of the second heat exchange channel 302 are respectively connected to the second supply port 201 and the second return port 202 of the medium supply component 20. The first heat exchanger 30 heats the second medium in the second heat exchange channel 302 through the thermal energy of the first medium in the first heat exchange channel 301. Both the first heat exchange channel 301 and the second heat exchange channel 302 are direct-flow heat exchange channels. The air conditioning heat pump system 40 is located downstream of the first heat exchanger 30. The air conditioning heat pump system 40 includes a second heat exchanger 41 and a refrigerant circulation pipeline 42 that are interconnected. The second heat exchanger 41 has an evaporation section 411 and a condensation section 412 that are interconnected. The second heat exchanger 41 is connected to the second heat exchange channel 302. The evaporation section 411 is used to exchange heat with the second medium in the second heat exchange channel 302 to absorb the heat energy in the second heat exchange medium. The heat is then transferred to the condensation section 412. The condensation section 412 is used to exchange heat with the refrigerant in the refrigerant circulation pipeline 42 to evaporate the refrigerant from a liquid state to a gaseous state.

[0029] In this application, the first medium can be domestic or industrial wastewater generated from geothermal heating, recreation, etc., or hot spring wastewater generated from hot spring resorts. The second medium can be well water or rainwater.

[0030] In this embodiment, the first heat exchanger 30 is a parallel flow flat tube heat exchanger, which features simple structure, convenient maintenance and cleaning, high operational stability, and good pressure resistance. The second heat exchanger 41 is a direct expansion micro heat pipe array heat exchanger, which features small footprint, small size, light weight, and good heat exchange effect.

[0031] By applying the technical solution of this utility model, the heat exchange channel with a bent tube structure in traditional heat exchanger design is prone to accumulating impurities or forming deposits at the bends. This is especially true when the first medium discharged from the waste heat supply component is usually domestic or industrial sewage, which contains a lot of suspended solids. The narrow part of the bend is particularly prone to blockage, which not only affects the heat exchange efficiency but also increases the system maintenance cost. The first heat exchanger 30 of this solution adopts a direct-flow heat exchange channel, that is, the flow direction of the first medium is straight. The first medium flows directly from one end of the first heat exchange channel 301 to the other end without complex bends. This makes the flow of the first medium smoother and effectively avoids the problem of impurities clogging at the bends. This not only improves the heat exchange efficiency but also reduces maintenance costs and ensures the long-term stable operation of the system. Furthermore, the first medium exchanges heat with the second medium through the first heat exchanger 30, and the second medium exchanges heat with the air conditioning heat pump system 40 through the second heat exchanger 41. In this way, the waste heat in the first medium is recovered and converted into usable heat energy to heat other media, thereby achieving efficient energy utilization. At the same time, the first medium only flows in the first heat exchanger 30, avoiding blockage of the second heat exchanger 41 and reducing the maintenance cost of the entire system.

[0032] like Figure 2 As shown, the first heat exchanger 30 includes a first shell 31, a first heat exchange structure, and a second heat exchange structure. The first shell 31 has a first flow cavity. The first heat exchange structure is disposed within the first flow cavity and includes multiple independently arranged first flat tubes 32 spaced apart. Each first flat tube 32 has multiple independently arranged first microchannels forming a second heat exchange channel 302. One end of each microchannel is connected to a second supply port 201, and the other end is connected to the second heat exchanger 41. The second heat exchange structure is disposed within the first flow cavity and includes multiple spaced fins 33. Multiple fins 33 are arranged between adjacent first flat tubes 32, forming a first heat exchange channel 301 between adjacent fins 33. The first heat exchanger 30 is constructed using multiple independently arranged first flat tubes 32 and fins 33. This modular design allows the heat exchanger to be flexibly assembled and adjusted according to actual heat exchange requirements, enhancing the system's adaptability and practicality. Furthermore, the multiple independently arranged microchannels within the first flat tube 32 increase the contact area between the second medium and the first heat exchanger 30, enhancing the heat transfer effect. This makes the heat exchange between the first heat exchange channel 301 and the second heat exchange channel 302 more complete, reduces thermal resistance, and improves the overall heat exchange performance of the first heat exchanger 30.

[0033] The first medium and the second medium flow in parallel directions but in opposite directions, which makes full use of the effective heat transfer area of ​​the first heat exchanger 30 and increases the heat exchange effect of the first medium and the second medium.

[0034] In this application, the exterior of the first housing 31 is also covered with a first insulation layer 35 using sealant to ensure internal heat exchange efficiency.

[0035] Specifically, the fins 33, the first flat tube 32, and the first shell 31 are all welded together. The first shell 31 has a first inlet 311 and a first outlet 312. The first inlet 311 is connected to the first supply port 101, and the first outlet 312 is connected to the first return port 102. A first distributor and multiple first distributor pipes are provided in the first flow cavity. One end of the first distributor is connected to the first inlet 311, and the other end of the first distributor is connected to multiple first distributor pipes. The multiple first distributor pipes are connected to the inlets of multiple first heat exchange channels 301. A first confluencer and multiple second distributor pipes are also provided in the first flow cavity. One end of the first confluencer is connected to the first outlet 312, and the other end of the first confluencer is connected to multiple second distributor pipes. The multiple second distributor pipes are respectively connected to the outlets of multiple first heat exchange channels 301.

[0036] In this application, the first housing 31 also has a second inlet 313 and a second outlet 314. The second inlet 313 is connected to the second supply port 201, and the second outlet 314 is connected to the second return port 202. A flow divider and a flow pipe can be installed between the second inlet 313 and the second heat exchange channel 302, and the installation method is the same as that of the first flow divider and multiple first flow divider pipes. In other embodiments, the flow divider and flow pipe may not be installed, because the inflowing fluid is only the first medium and the second medium. The first medium can flow through the first flow divider pipe and the second flow divider pipe, so the second medium can directly flow into the second heat exchange channel 302 after entering the first housing 313 from the second inlet 313, and then flow out from the second outlet 314 without mixing with the first medium.

[0037] like Figure 3 As shown, the inner wall of the second heat exchange channel 302 has a recessed structure 34. The recessed structure 34 increases the contact area between the first medium and the wall of the second heat exchange channel 302, thereby improving the heat exchange efficiency of the first heat exchanger 30. Furthermore, the recessed structure 34 can agitate the fluid, increasing the heat exchange effect. Simultaneously, processing the recessed structure on the original sidewall can reduce the sidewall thickness, lower the thermal resistance, and accelerate heat transfer.

[0038] Specifically, grooves can be machined on the inner wall of the second heat exchange channel 302 to form a recessed structure. In this embodiment, the grooves are serrated.

[0039] like Figure 4As shown, the second heat exchanger 41 has a third heat exchange channel 413, a fourth heat exchange channel 414, and a fifth heat exchange channel 415 that are independent of each other. One end of the third heat exchange channel 413 is connected to the second heat exchange channel 302 and is used for the flow of the second medium. The other end of the third heat exchange channel 413 is connected to the second return port 202. The fourth heat exchange channel 414 is connected to the refrigerant circulation pipeline 42 and is used for the flow of refrigerant. The fifth heat exchange channel 415 has an evaporation section 411 and a condensation section 412 that are connected to each other. The evaporation section 411 exchanges heat with the third heat exchange channel 413, and the condensation section 412 exchanges heat with the fourth heat exchange channel 414. After exchanging heat with the first medium, the temperature of the second medium rises. The heated second medium then enters the third heat exchange channel 413, where it exchanges heat with the evaporation section 411. The heat from the evaporation section 411 is transferred to the condensation section 412, which in turn exchanges heat with the fourth heat exchange channel 414, transferring the heat to the refrigerant in the refrigerant circulation pipeline 42 and heating it. This configuration not only optimizes the utilization of the first medium's thermal energy but also improves the thermodynamic efficiency of the refrigerant circulation, achieving multiple utilizations of waste heat and enhancing the overall system efficiency.

[0040] Specifically, the second heat exchanger 41 includes a second shell 416, a third heat exchange structure, and a fourth heat exchange structure. The second shell 416 has a second flow cavity and a third flow cavity arranged opposite to each other. The third heat exchange structure is disposed within the second flow cavity and includes multiple parallel second flat tubes 417. Each second flat tube 417 has multiple spaced-apart second microchannels, which form a fourth heat exchange channel 414. The fourth heat exchange structure includes multiple spaced-apart micro heat pipes for holding the heat exchange medium. Each micro heat pipe has a first section and a second section connected sequentially. The first section is disposed within the second flow cavity and located between adjacent second flat tubes 417, forming a condensation section 412. The second section is disposed within the third flow cavity and forms an evaporation section 411. The micro heat pipes form a fifth heat exchange channel 415, and a third heat exchange channel 413 is formed between adjacent second sections. The heat exchange medium inside the micro heat pipe absorbs heat in the evaporation section 411 and releases heat in the condensation section 412, transferring the heat to the refrigerant in the fourth heat exchange channel 414, causing the refrigerant to evaporate and undergo a heat pump cycle. This process features high heat conversion efficiency, reduces heat loss, and ensures the overall thermal efficiency of the system. At this point, the second heat exchanger 41 functions as an evaporator.

[0041] The second shell 416 is also equipped with multiple distributors, collectors and flow lines, and the arrangement is the same as that in the first heat exchanger 30, which can ensure that the different flow channels are independent of each other and that the media will not mix.

[0042] In this application, a second insulation layer 419 is also bonded to the outside of the second shell 416 with sealant to ensure internal heat exchange efficiency. The second shell 416 is made of stainless steel with a thickness of not less than 2 mm and a pressure resistance of not less than 10 MPa.

[0043] There are no restrictions on the type of heat exchange medium, as long as it can absorb or release heat.

[0044] Further, the waste heat supply assembly 10 includes a first supply tank 11, a first supply pipeline 12, and a first return pipeline 13. The first supply pipeline 12 is located between the first supply tank 11 and the inlet of the first heat exchange channel 301, and the first return pipeline 13 is located between the outlet of the first heat exchange channel 301 and the first supply tank 11. The end of the first supply pipeline 12 forms a first supply port 101, and the end of the first return pipeline 13 forms a first return port 102. A first filter 14, a first control valve 15, and a first water pump 16 are sequentially arranged on the first supply pipeline 12. A second control valve 17 is arranged on the first return pipeline 13. The first supply tank 11 is used to place and collect the first medium. The first control valve 15 and the second control valve 17 are both flow control valves used to control the on / off state or flow rate of the first medium in the pipeline. The first filter 14 is used to filter impurities in the first medium, and the first water pump 16 is used to drive the first medium to flow in the first supply pipeline 12. The waste heat supply assembly 10 also includes a first flow meter 18 and a first pressure gauge 19, which are sequentially arranged on the first supply pipeline 12. The first flow meter 18 is located downstream of the first water pump 16. The first medium enters the first heat exchanger 30 from the first supply tank 11 through the first supply pipeline 12, exchanges heat with the second medium, and then flows back to the first supply tank 11 through the first return pipeline 13. The specific structures of the above-mentioned components are all prior art and will not be described in detail here.

[0045] In this embodiment, the end of the first supply pipe 12 can extend into the interior of the first heat exchanger 30, and the first pressure gauge 19 is disposed at the end of the first supply pipe 12, located inside the first heat exchanger 30.

[0046] like Figure 1As shown, the medium supply assembly 20 also includes a second supply tank 21, a second supply pipeline 22, a connecting pipeline 23, and a second return pipeline 24. The second supply pipeline 22 is located between the second supply tank 21 and the inlet of the second heat exchange channel 302. The connecting pipeline 23 is located between the outlet of the second heat exchange channel 302 and the second heat exchanger 41. The second return pipeline 24 is located between the second heat exchanger 41 and the second supply tank 21. The second supply pipeline 22 has a second supply port 201, and the second return pipeline 24 has a second return port 202. A second filter 25, a third control valve 26, a second water pump 27, a second flow meter 28, and a second pressure gauge 29 are sequentially arranged on the second supply pipeline 22. A fourth control valve 241 is arranged on the second return pipeline 24. The second supply tank 21 is used to place and collect the second medium. The third control valve 26 and the fourth control valve 241 are both flow control valves used to control the on / off state or flow rate of the second medium in the pipeline. The second filter 25 is used to filter impurities in the second medium, and the second water pump 27 is used to drive the second medium to flow in the second supply pipeline 22. All of the above components are existing technology and will not be described in detail here. The second medium enters the first heat exchanger 30 from the second supply tank 21 through the second supply pipeline 22, exchanges heat with the first medium, and then enters the second heat exchanger 41 through the connecting pipeline 23. After exchanging heat with the heat exchange medium in the micro heat pipe, it flows back to the second supply tank 21 through the second return pipeline 24.

[0047] In this embodiment, the end of the second supply pipe 22 can extend into the interior of the second heat exchanger 41, and the second pressure gauge 29 is disposed at the end of the second supply pipe 22, located inside the first heat exchanger 30.

[0048] Specifically, the air conditioning heat pump system 40 also includes a compressor 43, a throttle valve 44, and a condenser 45 that are interconnected. The compressor 43, condenser 45, throttle valve 44, and second heat exchanger 41 are sequentially connected via a refrigerant circulation pipeline 42. The air conditioning heat pump system 40 also includes a radiant terminal 46, which is connected to the condenser 45. The return water from the radiant terminal 46 can exchange heat with the refrigerant in the condenser 45. Through the combination of compressor 43, throttle valve 44 and condenser 45, the gaseous refrigerant after heat exchange enters compressor 43. Compressor 43 is used to increase the pressure of the refrigerant. The high-temperature and high-pressure gaseous refrigerant after compressor 43 enters condenser 45 through refrigerant circulation pipeline 42, where it exchanges heat with the return water of radiant terminal 46. Throttling valve 44 is used to reduce the pressure of the refrigerant, turning it into a low-temperature and low-pressure liquid refrigerant. It then returns to the second heat exchanger 41 to absorb the heat from the condensing section 412 in the fifth heat exchange channel 415, turning it into a low-temperature and low-pressure gaseous refrigerant, and finally enters compressor 43 again, realizing the recycling of refrigerant.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0051] In the description of this utility model, it should be understood that directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom," indicating orientations or positional relationships, are generally based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself. For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," and "above" may be used here to describe the spatial positional relationship between one device or feature and other devices or features as shown in the figures. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if a device in the accompanying drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waste heat recovery system, characterized in that, The waste heat recovery system includes: The energy supply system includes a waste heat supply component (10), a medium supply component (20), and a first heat exchanger (30). The first heat exchanger (30) has a first heat exchange channel (301) and a second heat exchange channel (302) that are independent of each other. The two ends of the first heat exchange channel (301) are respectively connected to the first supply port (101) and the first return port (102) of the waste heat supply component (10). The two ends of the second heat exchange channel (302) are respectively connected to the second supply port (201) and the second return port (202) of the medium supply component (20). The first heat exchanger (30) heats the second medium in the second heat exchange channel (302) with the heat energy of the first medium in the first heat exchange channel (301). Both the first heat exchange channel (301) and the second heat exchange channel (302) are direct-flow heat exchange channels. An air conditioning heat pump system (40) is located downstream of the first heat exchanger (30). The air conditioning heat pump system (40) includes a second heat exchanger (41) and a refrigerant circulation pipeline (42) that are interconnected. The second heat exchanger (41) has an evaporation section (411) and a condensation section (412) that are interconnected. The second heat exchanger (41) is connected to the second heat exchange channel (302). The evaporation section (411) is used to exchange heat with the second medium in the second heat exchange channel (302). The condensation section (412) is used to exchange heat with the refrigerant in the refrigerant circulation pipeline (42) to evaporate the refrigerant from a liquid state to a gaseous state.

2. The waste heat utilization system according to claim 1, characterized in that, The first heat exchanger (30) includes: The first housing (31) has a first flow cavity; The first heat exchange structure is disposed in the first flow cavity. The first heat exchange structure includes a plurality of independently disposed first flat tubes (32). The plurality of first flat tubes (32) are spaced apart. The first flat tubes (32) have a plurality of independently disposed first microchannels. The first microchannels form the second heat exchange channel (302). One end of each of the plurality of first microchannels is connected to the second supply port (201), and the other end of the first microchannel is connected to the second heat exchanger (41). The second heat exchange structure is disposed in the first flow cavity. The second heat exchange structure includes a plurality of spaced fins (33). A plurality of fins (33) are disposed between two adjacent first flat tubes (32), and a first heat exchange channel (301) is formed between two adjacent fins (33).

3. The waste heat utilization system according to claim 1, characterized in that, The inner wall of the second heat exchange channel (302) has a recessed structure (34).

4. The waste heat utilization system according to claim 1, characterized in that, The second heat exchanger (41) has a third heat exchange channel (413), a fourth heat exchange channel (414) and a fifth heat exchange channel (415) that are independent of each other. One end of the third heat exchange channel (413) is connected to the second heat exchange channel (302), and the other end of the third heat exchange channel (413) is connected to the second return port (202). The fourth heat exchange channel (414) is connected to the refrigerant circulation pipeline (42). The fifth heat exchange channel (415) has an evaporation section (411) and a condensation section (412) that are connected to each other. The evaporation section (411) exchanges heat with the third heat exchange channel (413), and the condensation section (412) exchanges heat with the fourth heat exchange channel (414).

5. The waste heat utilization system according to claim 4, characterized in that, The second heat exchanger (41) includes: The second housing (416) has a second flow cavity and a third flow cavity disposed opposite to each other; The third heat exchange structure is disposed in the second flow cavity. The third heat exchange structure includes a plurality of parallel second flat tubes (417). The second flat tubes (417) have a plurality of spaced second microchannels. The second microchannels form the fourth heat exchange channel (414). The fourth heat exchange structure includes multiple spaced micro heat pipes for placing heat exchange medium. Each micro heat pipe has a first section and a second section connected in sequence. The first section is located in the second flow cavity and between adjacent second flat tubes (417). The first section forms the condensation section (412). The second section is located in the third flow cavity and forms the evaporation section (411). The micro heat pipe forms the fifth heat exchange channel (415), and the third heat exchange channel (413) is formed between adjacent second sections.

6. The waste heat utilization system according to claim 1, characterized in that, The waste heat supply assembly (10) includes a first supply tank (11), a first supply pipeline (12), and a first return pipeline (13). The first supply pipeline (12) is located between the first supply tank (11) and the inlet of the first heat exchange channel (301). The first return pipeline (13) is located between the outlet of the first heat exchange channel (301) and the first supply tank (11). The end of the first supply pipeline (12) forms the first supply port (101), and the end of the first return pipeline (13) forms the first return port (102). The first supply pipeline (12) is sequentially provided with a first filter (14), a first control valve (15) and a first water pump (16); A second control valve (17) is installed on the first return pipeline (13).

7. The waste heat utilization system according to claim 6, characterized in that, The waste heat supply assembly (10) further includes a first flow meter (18) and a first pressure gauge (19), which are sequentially arranged on the first supply pipeline (12), with the first flow meter (18) located downstream of the first water pump (16).

8. The waste heat utilization system according to claim 1, characterized in that, The medium supply assembly (20) further includes a second supply tank (21), a second supply pipeline (22), a connecting pipeline (23), and a second return pipeline (24). The second supply pipeline (22) is disposed between the second supply tank (21) and the inlet of the second heat exchange channel (302). The connecting pipeline (23) is disposed between the outlet of the second heat exchange channel (302) and the second heat exchanger (41). The second return pipeline (24) is disposed between the second heat exchanger (41) and the second supply tank (21). The second supply pipeline (22) has a second supply port (201), and the second return pipeline (24) has a second return port (202). The second supply pipeline (22) is sequentially equipped with a second filter (25), a third control valve (26), a second water pump (27), a second flow meter (28), and a second pressure gauge (29); A fourth control valve (241) is installed on the second return line (24).

9. The waste heat utilization system according to claim 1, characterized in that, The air conditioning heat pump system (40) also includes a compressor (43), a throttle valve (44) and a condenser (45) that are interconnected. The compressor (43), the condenser (45), the throttle valve (44) and the second heat exchanger (41) are sequentially connected through the refrigerant circulation pipeline (42).

10. The waste heat utilization system according to claim 9, characterized in that, The air conditioning heat pump system (40) also includes a radiant terminal (46), which is connected to the condenser (45). The return water of the radiant terminal (46) can exchange heat with the refrigerant in the condenser (45).

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