High-temperature wine evaporation heat pump unit

Abstract

The application discloses a high-temperature wine distillation heat pump unit, which comprises a wine distillation kettle, a condensing device and a heat pump assembly. The heat pump assembly comprises a compressor, an evaporator, a condenser and a flash tank. The evaporator is connected with the compressor through a first pipeline, the compressor is connected with the condenser through a second pipeline, the condenser is connected with the evaporator through a third pipeline, the condenser is arranged in the flash tank, the steam outlet of the flash tank is connected with the wine distillation kettle, the wine distillation kettle is connected with the condensing device through a fourth pipeline, and the evaporator comprises a heat exchange layer and a front interlayer. The heat exchange layer is connected with the first pipeline and the third pipeline respectively, the front interlayer is provided with a first water inlet and a first water outlet, the first water inlet is connected with the cooling water outlet of the condensing device, the first water outlet is connected with the cooling water inlet of the condensing device, and the front interlayer is arranged on the side of the heat exchange layer facing the external environment. The application effectively and sufficiently utilizes the cooling water heat, realizes air waste heat before heat exchange, and effectively improves the heat exchange efficiency of the heat pump assembly.

Description

Technical Field

[0001] This application relates to the technical field of heat pump equipment, and more particularly to a high-temperature alcohol distillation heat pump unit. Background Technology

[0002] In the brewing industry, high-temperature distillation is a crucial process in the production of various alcoholic beverages. Heat pump technology, with its significant advantages such as high efficiency, energy saving, and environmental friendliness, has been widely applied in high-temperature distillation. By consuming a small amount of electricity, heat pumps absorb heat from a low-temperature heat source and transfer it to a high-temperature heat source, providing a stable and suitable thermal energy for the distillation process. This effectively improves distillation efficiency and energy utilization efficiency, thus promoting the modernization of the brewing industry.

[0003] In the condensation stage of high-temperature distillation, the condenser plays an indispensable role. The high-temperature alcohol vapor generated during distillation enters the condenser, where it exchanges heat with cooling water. The vapor liquefies upon cooling and flows out as alcohol, thus producing the spirit. However, current applications of heat pumps in high-temperature distillation have significant shortcomings in the utilization of cooling water. After cooling the vapor and producing the spirit in the condenser, the cooling water carries a large amount of residual heat and is discharged. However, in existing technologies, this cooling water with residual heat is usually not effectively utilized but is either directly discharged or discarded after simple treatment. This approach not only wastes a large amount of heat energy, increasing energy consumption and production costs, but also contradicts the current societal advocacy of energy conservation, emission reduction, and sustainable development. Utility Model Content

[0004] The purpose of this application is to provide a high-temperature alcohol distillation heat pump unit that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On one hand, a high-temperature distillation heat pump unit is provided, comprising: a distillation kettle, a condensing device, and a heat pump assembly. The heat pump assembly includes a compressor, an evaporator, a condenser, and a flash tank. The evaporator is connected to the compressor via a first pipeline, the compressor is connected to the condenser via a second pipeline, and the condenser is connected to the evaporator via a third pipeline. The condenser is located inside the flash tank, and the steam outlet of the flash tank is connected to the distillation kettle. The distillation kettle is connected to the condensing device via a fourth pipeline. The evaporator includes a heat exchange layer and a front jacket. The heat exchange layer is connected to the first pipeline and the third pipeline, respectively. The front jacket has a first water inlet and a first water outlet. The first water inlet is connected to the cooling water outlet of the condensing device, and the first water outlet is connected to the cooling water inlet of the condensing device. The front jacket is located on the side of the heat exchange layer facing the external environment, so that the front jacket can exchange heat with the cold air before entering the heat exchange layer.

[0007] Furthermore, a first cooling water pipe is provided in the front interlayer, one end of the first cooling water pipe is connected to the first water inlet, and the other end of the first cooling water pipe is connected to the first water outlet.

[0008] Furthermore, the evaporator also includes a rear jacket, which is disposed on the side of the heat exchange layer opposite to the front jacket. The rear jacket has a second water inlet and a second water outlet. The second water inlet is connected to the cooling water outlet of the condensing device, and the second water outlet is connected to the cooling water inlet of the condensing device. The cooling water from the condensing device can be selectively introduced into either the first water inlet or the second water inlet.

[0009] Furthermore, a first control valve is installed on the pipeline connected to the first water inlet, and a second control valve is installed on the pipeline connected to the second water inlet.

[0010] Furthermore, a second cooling water pipe is provided in the front interlayer, one end of the second cooling water pipe is connected to the second water inlet, and the other end of the second cooling water pipe is connected to the second water outlet.

[0011] Furthermore, the first cooling water pipe and the second cooling water pipe have the same structure, both including multiple straight segments with uniform spacing, and adjacent straight segments are connected by a U-shaped segment.

[0012] Furthermore, the evaporator also includes vertically spaced inlet and outlet water pipes, with the first inlet located on the inlet water pipe and the first outlet located on the outlet water pipe. Multiple third cooling water pipes are horizontally spaced within the front interlayer. The third cooling water pipes are U-shaped and their two ends are connected to the inlet water pipe and the outlet water pipe, respectively.

[0013] Furthermore, the height of the first inlet is lower than the height of the first outlet.

[0014] Furthermore, a throttle is installed on the third pipeline.

[0015] Furthermore, multiple heat pump components are provided, and all heat pump components share a single flash tank.

[0016] The beneficial effects of this application are as follows: By setting a front jacket in the evaporator and connecting the front jacket to the cooling water circulation system of the condenser, the waste heat of the cooling water is cleverly recovered and utilized. Specifically, after the cooling water carrying waste heat flows into the front jacket, it exchanges heat with the cold air about to enter the heat exchange layer, preheating the cold air. This process not only avoids the direct waste of the waste heat of the cooling water, improves the overall energy utilization efficiency, and reduces the energy consumption and production cost of the entire high-temperature distillation system; but also, the preheated cold air entering the heat exchange layer can improve the heat exchange efficiency of the heat pump system, enabling the heat pump components to provide more heat for distillation under the same energy consumption, further optimizing the distillation process. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is an internal schematic diagram of the high-temperature distillation heat pump unit described in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the evaporator described in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the high-temperature alcohol distillation heat pump unit described in the embodiments of this application.

[0021] In the diagram: 1. Distillation vessel; 2. Condensation unit; 3. Heat pump assembly; 301. Compressor; 302. Evaporator; 303. Condenser; 304. Flash evaporator; 305. Throttling device; 306. First pipeline; 307. Second pipeline; 308. Third pipeline; 3021. Heat exchange layer; 3022. Front jacket; 3023. Rear jacket; 3024. First water inlet; 3025. First water outlet; 3026. Main water inlet pipe; 3027. Main water outlet pipe; 3028. Second water inlet; 3029. Second water outlet; 4. Fourth pipeline. Detailed Implementation

[0022] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] like Figures 1-3 As shown, this embodiment provides a high-temperature distillation heat pump unit, including: a distillation kettle 1, a condensing device 2, and a heat pump assembly 3. The heat pump assembly 3 includes a compressor 301, an evaporator 302, a condenser 303, and a flash evaporator 304. The evaporator 302 is connected to the compressor 301 via a first pipe 306, the compressor 301 is connected to the condenser 303 via a second pipe 307, and the condenser 303 is connected to the evaporator 302 via a third pipe 308. The condenser 303 is located inside the flash evaporator 304, and the steam outlet of the flash evaporator 304 is connected to the distillation kettle 1. The distillation kettle 1 is connected to the condensing device... 2. The evaporator 302 is connected via a fourth pipe 4. It includes a heat exchange layer 3021 and a front jacket 3022. The heat exchange layer 3021 is connected to the first pipe 306 and the third pipe 308 respectively. The front jacket 3022 has a first water inlet 3024 and a first water outlet 3025. The first water inlet 3024 is connected to the cooling water outlet of the condensing device 2, and the first water outlet 3025 is connected to the cooling water inlet of the condensing device 2. The front jacket 3022 is located on the side of the heat exchange layer 3021 facing the external environment so that the front jacket 3022 can exchange heat with the cold air before entering the heat exchange layer 3021.

[0026] Based on the above scheme, in this unit, the compressor 301, evaporator 302, condenser 303, and flash tank 304 of the heat pump assembly 3 are connected sequentially through pipelines to form a cycle. The condenser 303 is located inside the flash tank 304. The steam generated by the flash tank 304 enters the distillation kettle 1 for distillation. The alcohol vapor generated by the distillation kettle 1 then enters the condensing device 2 through the fourth pipeline 4 for condensation and alcohol extraction. The key innovation lies in the structural design of the evaporator 302, which includes a heat exchange layer 3021 and a front jacket 3022. The heat exchange layer 3021 connects the first pipeline 306 and the third pipeline 308, participating in the normal circulating heat exchange process of the heat pump system. The front jacket 3022 has a first inlet 3024 and a first outlet 3025. The first inlet 3024 is connected to the cooling water outlet of the condenser 2, and the first outlet 3025 is connected to the cooling water inlet of the condenser 2. This allows the cooling water carrying waste heat to circulate within the front jacket 3022. Simultaneously, the front jacket 3022 is located on the side of the heat exchange layer 3021 facing the external environment. Before entering the heat exchange layer 3021, the cold air exchanges heat with the front jacket 3022. In this way, the waste heat carried by the cooling water can be transferred to the cold air about to enter the heat exchange layer 3021, preheating the air. After its temperature decreases, the cooling water returns to the condenser 2 to continue cooling the vapors, thus achieving waste heat recovery and reuse.

[0027] This solution ingeniously incorporates a front jacket 3022 on the evaporator 302, cleverly connecting it to the cooling water circulation of the condenser 2. This allows for the effective recovery of a significant amount of waste heat carried by the cooling water after it has cooled the alcohol vapor. This waste heat is then transferred to the cold air entering the heat exchange layer 3021, preheating it. This innovative design greatly improves energy recycling efficiency, allowing previously wasted heat to participate in the energy exchange of the heat pump system. This significantly reduces the dependence of the entire high-temperature distillation process on external energy sources, effectively reducing energy consumption and saving enterprises substantial production costs. It also aligns with the current societal demand for energy conservation, emission reduction, and green production. Furthermore, the preheated cold air entering the heat exchange layer 3021 greatly improves the heat exchange environment. Due to the increased initial temperature of the cold air and the reduced temperature difference between it and the medium within the heat exchange layer 3021, the heat exchange process becomes gentler and more efficient, reducing energy loss during the process. This allows the heat pump component 3 to output more and more stable heat for the distillation operation in the distillation kettle 1 with the same energy consumption. This not only improves the efficiency and quality of distillation, but also shortens the distillation cycle, further enhancing the company's production efficiency.

[0028] Furthermore, a first cooling water pipe is provided within the front interlayer 3022. One end of the first cooling water pipe is connected to the first inlet 3024, and the other end is connected to the first outlet 3025. When the cooling water carrying residual heat flows out from the cooling water outlet of the condenser 2 and enters the first cooling water pipe through the first inlet 3024, the residual heat carried by the cooling water during its flow within the relatively independent space of the front interlayer 3022 will dissipate to the surrounding environment through the pipe wall. Since the front interlayer 3022 is located on the side of the heat exchange layer 3021 facing the external environment, the air within the front interlayer 3022 will absorb the heat emitted by the first cooling water pipe, causing its temperature to rise. Before entering the heat exchange layer 3021, the cold air will first pass through the heated area of ​​the front interlayer 3022, exchanging heat with the heated air within the front interlayer 3022, thus preheating the cold air. The preheated air enters the heat exchange layer 3021, where it can better exchange heat with the medium inside the heat exchange layer 3021. At the same time, the cooled water, after its temperature has dropped, flows back to the condenser 2 through the first outlet 3025 to continue participating in the cooling process of the alcohol vapor.

[0029] Optionally, the evaporator 302 further includes a rear jacket 3023, which is disposed on the side of the heat exchange layer 3021 opposite to the front jacket 3022. The rear jacket 3023 has a second inlet 3028 and a second outlet 3029. The second inlet 3028 is connected to the cooling water outlet of the condenser 2, and the second outlet 3029 is connected to the cooling water inlet of the condenser 2. The cooling water from the condenser 2 can selectively enter either the first inlet 3024 or the second inlet 3028. When the cooling water flows out of the condenser 2, there are two different flow paths, resulting in different working effects. If the cooling water chooses to enter the first inlet 3024, it will flow into the first cooling water pipe in the front jacket 3022. During the flow, the residual heat carried by the cooling water will be transferred to the air in the front jacket 3022 through the pipe wall of the first cooling water pipe. At this point, the cold air about to enter the heat exchange layer 3021 will first pass through the front interlayer 3022 to exchange heat with the heated air, thus achieving preheating. The preheated air temperature increases, and the temperature difference between the air and the medium in the heat exchange layer 3021 is reduced after entering the heat exchange layer 3021, which is more conducive to efficient heat exchange of the heat pump component 3 and improves the overall performance of the heat pump system.

[0030] If the cooling water enters through the second inlet 3028, it will directly enter the rear jacket 3023. After passing through the heat exchange layer 3021 and completing heat exchange with the medium within it, the air's temperature is lower than the ambient temperature. As the cooling water flows through the rear jacket 3023, this low-temperature air exchanges heat with the cooling water, rapidly cooling the heated water. The cooled water then circulates through the second outlet 3029 back to the condenser 2, continuing to participate in the cooling process of the alcohol vapor, ensuring the cooling water can function continuously and effectively.

[0031] Under different production conditions and needs, operators can flexibly adjust the flow direction of cooling water according to the actual situation. When it is necessary to improve the heat exchange efficiency of heat pump component 3, the cooling water enters the front jacket 3022 to preheat the cold air, making full use of waste heat to optimize the performance of the heat pump system. In other cases, such as when it is necessary to rapidly cool the cooling water to ensure its cooling capacity, the cooling water enters the rear jacket 3023, and achieves rapid cooling with the help of the low-temperature air passing through the heat exchange layer 3021. This realizes the diversification and high efficiency of waste heat utilization, maximizing the value of the waste heat of the cooling water.

[0032] Specifically, a first control valve is installed on the pipeline connected to the first inlet 3024, and a second control valve is installed on the pipeline connected to the second inlet 3028. When the waste heat of the cooling water needs to be used to preheat the cold air during the production process to improve the heat exchange efficiency of the heat pump assembly 3, the operator can open the first control valve and close the second control valve simultaneously. At this time, the cooling water flowing out of the cooling water outlet of the condenser 2 can only enter the first cooling water pipe in the front jacket 3022 through the pipeline connected to the first inlet 3024. During the flow of the cooling water in the pipe, the waste heat it carries is transferred to the air in the front jacket 3022 through the pipe wall, thereby preheating the cold air that is about to enter the heat exchange layer 3021. The preheated air then enters the heat exchange layer 3021 to participate in the heat exchange process.

[0033] Conversely, when the production environment changes, such as when the environment in the area of ​​the front jacket 3022 is unfavorable for transferring waste heat to the cold air, or when rapid cooling of the cooling water is required to ensure its cooling capacity, the operator opens the second control valve and closes the first control valve. In this way, the cooling water directly enters the rear jacket 3023 through the pipe connected to the second inlet 3028. The air, having passed through the heat exchange layer 3021 and reaching a lower temperature, exchanges heat with the cooling water in the rear jacket 3023, rapidly cooling the heated water. The cooled water then circulates through the second outlet 3029 back to the condenser 2 for continued use.

[0034] Meanwhile, a second cooling water pipe is installed within the front interlayer 3022. One end of the second cooling water pipe is connected to the second inlet 3028, and the other end is connected to the second outlet 3029. The addition of the second cooling water pipe optimizes the utilization of waste heat from the cooling water and the cooling effect. When preheating of cold air is required, the first cooling water pipe plays its full role; while when rapid cooling of the cooling water is required, the second cooling water pipe can guide the cooling water into a more favorable heat dissipation area (such as the rear interlayer 3023) to conduct efficient heat exchange with the low-temperature air passing through the heat exchange layer 3021. This flexible adjustment method ensures that the cooling water can be rationally utilized under different operating conditions, making full use of waste heat and ensuring that the cooling water is always kept within a suitable temperature range, thereby improving the energy efficiency and operational stability of the entire heat pump system.

[0035] Furthermore, the first and second cooling water pipes have identical structures, each comprising multiple evenly spaced straight segments, with adjacent straight segments connected by a U-shaped transition section. When cooling water enters the first cooling water pipe (taking the case of using waste heat to preheat cold air as an example), the cooling water first flows into the first straight segment. In the straight segment, the cooling water flows forward at a relatively stable velocity, fully exchanging heat with the pipe wall, transferring its own waste heat to the pipe wall, and then to the air in the front interlayer 3022, thus preheating the cold air. Due to the evenly distributed spacing of the straight segments, the flow state and heat exchange of the cooling water in each straight segment are relatively consistent, ensuring the uniformity of the preheating process. When the cooling water flows to the end of a straight segment, it enters the U-shaped segment. The U-shaped segment changes the flow direction of the cooling water, allowing it to flow smoothly into the next straight segment. In the U-shaped segment, the flow direction of the cooling water changes by 180 degrees, which to some extent causes changes in water velocity and pressure, generating local turbulence. The presence of turbulence enhances the convective heat transfer between the cooling water and the pipe wall, further improving heat exchange efficiency. Simultaneously, the U-shaped design allows the entire cooling water pipe to achieve a longer flow path within a limited space, increasing the contact time between the cooling water and air and the heat exchange area.

[0036] As an optional specific implementation, the evaporator 302 further includes vertically spaced inlet main pipe 3026 and outlet main pipe 3027. A first inlet 3024 is located on the inlet main pipe 3026, and a first outlet 3025 is located on the outlet main pipe 3027. Multiple third cooling water pipes are horizontally spaced within the front interlayer 3022. These third cooling water pipes are U-shaped, and their two ends are connected to the inlet main pipe 3026 and the outlet main pipe 3027, respectively. The vertically spaced inlet main pipe 3026 and outlet main pipe 3027, together with the horizontally spaced third cooling water pipes, construct a uniformly distributed cooling water flow network. Each third cooling water pipe independently performs heat exchange, and due to the uniform distribution effect of the inlet main pipe 3026, the flow rate and velocity of the cooling water in each pipe are relatively consistent. Meanwhile, the U-shaped third cooling water pipe design ensures that the cooling water can have sufficient and uniform contact with the air in the front jacket 3022, avoiding insufficient or excessive local heat exchange, thereby improving the uniformity of heat exchange in the entire evaporator 302 and helping to improve the overall performance and stability of the heat pump unit.

[0037] Furthermore, the U-shaped third cooling water pipe cleverly increases the flow path length of the cooling water. Within the limited space of the front mezzanine 3022, the cooling water achieves a reciprocating flow through the U-shaped bend, effectively increasing the length of the cooling water pipe within the same space, thereby increasing the heat exchange area between the cooling water and the air. Moreover, the local turbulence generated by the U-shaped bend enhances the convective heat transfer intensity between the cooling water and the pipe wall, allowing heat to be transferred between the cooling water and the air more quickly and efficiently, effectively improving heat exchange efficiency, helping to reduce energy consumption, and improving the energy utilization efficiency of the heat pump unit.

[0038] It is worth mentioning that in the design of the inlet main pipe 3026 and the outlet main pipe 3027, the height of the first inlet 3024 is lower than the height of the first outlet 3025. This lower height of the first inlet 3024 compared to the first outlet 3025 utilizes gravity. When cooling water flows into the inlet main pipe 3026, gravity helps the cooling water enter quickly; when the cooling water flows in the third cooling water pipe and the outlet main pipe 3027, the component of gravity makes the water flow smoother, reducing the resistance in the pipes and lowering the pump's energy consumption. This not only increases the flow rate of the cooling water but also ensures the stable operation of the entire cooling water circulation system, avoiding problems such as localized overheating or uneven heat exchange caused by poor water flow.

[0039] Generally, a throttling device 305 is installed on the third pipe 308, and an outlet is installed on the condensing device 2. The third pipe 308 connects key components such as the evaporator 302 and the condensing device 2, and the throttling device 305 (such as a thermostatic expansion valve or capillary tube) is installed here. When the high-temperature, high-pressure gaseous refrigerant flows out of the evaporator 302 and enters the third pipe 308, it reaches the throttling device 305. The throttling device 305, through its special structure (such as the temperature sensing bulb of the thermostatic expansion valve sensing temperature changes and adjusting the valve opening, and the capillary tube generating resistance due to its slender diameter), causes the refrigerant pressure to drop sharply. According to thermodynamic principles, during the adiabatic throttling process, the pressure of the refrigerant decreases, leading to a corresponding decrease in its temperature, thus becoming a low-temperature, low-pressure liquid or gas-liquid mixture refrigerant. The throttling device 305 can also precisely control the refrigerant flow rate entering the condensing device 2 according to the system's operating conditions and load requirements. For example, when the ambient temperature of the heat pump unit is high or the brewing process has a high cooling demand, the throttle valve 305 will increase the valve opening to allow more refrigerant to flow into the condenser 2 to enhance the cooling effect; conversely, when the ambient temperature is low or the cooling demand is reduced, the throttle valve 305 will decrease the valve opening to reduce the refrigerant flow and avoid energy waste and system overcooling.

[0040] During the high-temperature distillation process, the alcohol vapor enters the condenser 2. As the refrigerant inside the condenser 2 absorbs heat during evaporation, the internal temperature of the condenser 2 decreases. Upon encountering the low-temperature inner wall of the condenser 2, the alcohol vapor rapidly cools and condenses into liquid alcohol. This liquid alcohol flows down the inner wall of the condenser 2 and eventually exits through the outlet on the condenser 2, being collected in a corresponding container, thus completing the condensation and collection stages of the distillation process.

[0041] Specifically, multiple heat pump components 3 are provided, and all heat pump components 3 share a single flash tank 304. Sharing a single flash tank 304 among multiple heat pump components 3 allows for optimized refrigerant utilization. Through the gas-liquid separation and redistribution function of the flash tank 304, gaseous and liquid refrigerant can be precisely supplied according to the actual needs of each heat pump component 3, avoiding refrigerant waste and unreasonable distribution. For example, some heat pump components 3 may require more gaseous refrigerant to improve the efficiency of the compressor 301, while other heat pump components 3 require more liquid refrigerant to enhance the cooling effect of the evaporator 302. The flash tank 304 can meet these needs promptly and accurately, thereby improving the energy utilization efficiency of the entire system and reducing energy consumption.

[0042] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A high-temperature alcohol distillation heat pump unit, characterized in that, include: The distillation vessel (1), condenser (2), and heat pump assembly (3) are provided. The heat pump assembly (3) includes a compressor (301), an evaporator (302), a condenser (303), and a flash tank (304). The evaporator (302) is connected to the compressor (301) via a first pipe (306). The compressor (301) is connected to the condenser (303) via a second pipe (307). The condenser (303) is connected to the evaporator (302) via a third pipe (308). The condenser (303) is located inside the flash tank (304). The steam outlet of the flash tank (304) is connected to the distillation vessel (1). The distillation vessel (1) and the condenser (2) are connected via a fourth pipe. The evaporator (302) is connected to the pipeline (4). The evaporator (302) includes a heat exchange layer (3021) and a front jacket (3022). The heat exchange layer (3021) is connected to the first pipeline (306) and the third pipeline (308). The front jacket (3022) has a first inlet (3024) and a first outlet (3025). The first inlet (3024) is connected to the cooling water outlet of the condensing device (2), and the first outlet (3025) is connected to the cooling water inlet of the condensing device (2). The front jacket (3022) is located on the side of the heat exchange layer (3021) facing the external environment so that the front jacket (3022) can exchange heat with the cold air before entering the heat exchange layer (3021).

2. The high-temperature distillation heat pump unit according to claim 1, characterized in that, The front interlayer (3022) is provided with a first cooling water pipe, one end of which is connected to the first water inlet (3024), and the other end of which is connected to the first water outlet (3025).

3. The high-temperature distillation heat pump unit according to claim 2, characterized in that, The evaporator (302) further includes a rear jacket (3023), which is disposed on the side of the heat exchange layer (3021) away from the front jacket (3022). The rear jacket (3023) has a second inlet (3028) and a second outlet (3029). The second inlet (3028) is connected to the cooling water outlet of the condensing device (2), and the second outlet (3029) is connected to the cooling water inlet of the condensing device (2). The cooling water from the condensing device (2) can be selectively introduced into the first inlet (3024) or the second inlet (3028).

4. The high-temperature distillation heat pump unit according to claim 3, characterized in that, A first control valve is installed on the pipeline connected to the first water inlet (3024), and a second control valve is installed on the pipeline connected to the second water inlet (3028).

5. The high-temperature distillation heat pump unit according to claim 3, characterized in that, A second cooling water pipe is provided in the front interlayer (3022), one end of the second cooling water pipe is connected to the second water inlet (3028), and the other end of the second cooling water pipe is connected to the second water outlet (3029).

6. The high-temperature distillation heat pump unit according to claim 5, characterized in that, The first cooling water pipe and the second cooling water pipe have the same structure, both including multiple straight segments with evenly distributed spacing, and adjacent two straight segments are respectively connected by a U-shaped segment.

7. The high-temperature distillation heat pump unit according to claim 1, characterized in that, The evaporator (302) further includes a vertically spaced inlet main pipe (3026) and an outlet main pipe (3027). The first inlet (3024) is located on the inlet main pipe (3026), and the first outlet (3025) is located on the outlet main pipe (3027). A plurality of third cooling water pipes are horizontally spaced in the front interlayer (3022). The third cooling water pipes are U-shaped, and both ends of the third cooling water pipes are connected to the inlet main pipe (3026) and the outlet main pipe (3027) respectively.

8. The high-temperature distillation heat pump unit according to claim 7, characterized in that, The height of the first inlet (3024) is lower than the height of the first outlet (3025).

9. The high-temperature distillation heat pump unit according to any one of claims 1-8, characterized in that, A throttle (305) is installed on the third pipeline (308).

10. The high-temperature distillation heat pump unit according to any one of claims 1-8, characterized in that, Multiple heat pump components (3) are provided, and all heat pump components (3) share a single flash tank (304).

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