Fresh-keeping freezer with heat pump circulation, waste heat recovery, refrigeration and efficiency increasing integrated machine

Abstract

The application discloses a fresh-keeping freezer waste heat recovery refrigeration synergistic integrated machine with a heat pump cycle, and belongs to the field of waste heat recovery devices. A heat pump unit and a refrigeration system are sequentially connected in a device box, and the heat pump unit and the refrigeration system share a condenser evaporator and a condenser, so that the pipeline structure is simplified and the equipment redundancy is reduced. A heat preservation box is arranged outside the condenser, and a waste heat recovery component is arranged in the heat preservation box. The component comprises a heat exchange tank, first and second heat exchange main pipes, annularly-arranged heat exchange auxiliary pipes and upper and lower heat exchange discs. The middle part of the heat exchange auxiliary pipe is provided with a spiral part, a conical cover is fixed to the surface of the heat exchange auxiliary pipe, and a through hole is formed in the conical cover. The application can fully recover the waste heat released during the operation of the condenser, the recovery efficiency is improved by increasing the heat exchange contact area and prolonging the heat exchange time, the heat pump and the refrigeration system are cooperatively operated to reduce energy consumption, the integrated design reduces the land occupation and operation and maintenance costs, the refrigeration stability is ensured, the fresh-keeping quality of the freezer is improved, and the application is suitable for various fresh-keeping freezer storage scenes.

Description

Technical Field

[0001] This invention relates to the field of waste heat recovery devices, and more specifically, to an integrated machine for waste heat recovery and refrigeration efficiency enhancement in a cold storage facility with heat pump circulation. Background Technology

[0002] In the fresh food storage sector, cold storage facilities, as core low-temperature storage equipment, directly impact the freshness preservation quality and operating costs of stored goods through their refrigeration performance and operational efficiency. Currently, most cold storage refrigeration equipment on the market employs traditional single refrigeration systems, relying primarily on the coordinated operation of components such as compressors, condensers, and evaporators to create a low-temperature environment. However, these systems suffer from numerous technical challenges that urgently need to be addressed during actual operation, severely restricting the economic and environmental benefits of cold storage operations.

[0003] Traditional cold storage refrigeration systems suffer from severe waste of waste heat. During operation, the condenser, as a heat-generating component, continuously releases a significant amount of waste heat. This waste heat is typically discharged directly into the environment, resulting not only in ineffective energy loss but also potentially raising the ambient temperature and impacting the condenser's heat dissipation efficiency, creating a vicious cycle of "waste heat discharge - decreased heat dissipation efficiency - increased refrigeration energy consumption." This is particularly pronounced in fresh-keeping cold storage environments, where the refrigeration system needs to operate continuously for extended periods to maintain the freshness of stored goods, making the energy waste from waste heat discharge even more significant and substantially increasing the operating energy costs of the cold storage facility.

[0004] Existing cold storage refrigeration equipment suffers from low refrigeration efficiency and poor system coordination. Traditional cold storage refrigeration systems and waste heat recovery devices are often independent structures. To achieve waste heat recovery, additional independent waste heat recovery equipment is required, increasing equipment footprint and installation costs, and leading to complex piping connections, poor system compatibility, and potential leaks and frequent malfunctions. Furthermore, the independent operation of the refrigeration system and waste heat recovery device prevents efficient energy synergy. Even when some equipment attempts to integrate waste heat recovery, its heat exchange components are often simple straight-tube structures with small heat exchange contact areas and low efficiency, making it difficult to fully recover the waste heat released from the condenser and effectively improve refrigeration efficiency. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides an integrated unit for waste heat recovery and refrigeration efficiency enhancement of a fresh-locking cold storage with heat pump circulation, which can improve the efficiency of waste heat recovery.

[0006] To achieve this objective, the present invention adopts the following technical solution: This invention provides an integrated refrigeration efficiency enhancement unit for a cold storage facility with waste heat recovery and heat pump circulation, comprising an insulated box and an equipment box. The equipment box houses a heat pump unit and a refrigeration system. The heat pump unit is connected to the refrigeration system and includes a condenser-evaporator, a compressor, a condenser, and an expansion valve connected in sequence. The refrigeration system and the heat pump unit share the condenser-evaporator and the condenser. The insulated box is located outside the condenser, and a waste heat recovery component is installed inside the insulated box.

[0007] In a preferred embodiment of the present invention, the waste heat recovery component includes a heat exchange tank, a first heat exchange main pipe, a second heat exchange main pipe, and a plurality of auxiliary heat exchange pipes. The heat exchange tank is disposed within the insulation box. The first heat exchange main pipe is embedded in the inner bottom wall of the heat exchange tank, and the second heat exchange main pipe is embedded in the inner top wall of the heat exchange tank. The plurality of auxiliary heat exchange pipes are vertically disposed within the heat exchange tank and are arranged in a ring. The upper end of the first heat exchange main pipe is connected to a first heat exchange plate, which has a hollow internal structure. The first heat exchange main pipe communicates with the first heat exchange plate. The lower end of the second heat exchange main pipe is connected to a second heat exchange plate, which also has a hollow internal structure. The lower end of the second heat exchange main pipe communicates with the second heat exchange plate. The upper end of each auxiliary heat exchange pipe is connected to the second heat exchange plate, and the lower end of each auxiliary heat exchange pipe is connected to the first heat exchange plate.

[0008] In a preferred embodiment of the present invention, the condenser is connected to the lower end of the first heat exchange main pipe via an output pipe, and the condenser is connected to the upper end of the second heat exchange main pipe via an input pipe.

[0009] In a preferred embodiment of the present invention, the heat exchange main pipe further includes a driving component, which includes a drive shaft, a stirring blade, a first drive shaft, and a second drive shaft. The first drive shaft is rotatably connected to the first heat exchange main pipe via a bracket, and one end of the first drive shaft passes through the first heat exchange plate and is connected to the lower end of the drive shaft. The second drive shaft is rotatably connected to the second heat exchange main pipe via a bracket, and one end of the second drive shaft passes through the second heat exchange plate and is connected to the upper end of the drive shaft. The drive shaft is located inside the annular structure formed by the plurality of auxiliary heat exchange pipes, and the plurality of stirring blades are evenly arranged on the drive shaft.

[0010] In a preferred embodiment of the present invention, the first drive shaft and the first heat exchange plate, and the second drive shaft and the second heat exchange plate are connected by sealed bearings. A first drive paddle is fixed on the first drive shaft and is located inside the first heat exchange main pipe. A second drive paddle is fixed on the second drive shaft and is located inside the second heat exchange main pipe.

[0011] In a preferred embodiment of the present invention, a water pump is provided on the output pipe.

[0012] In a preferred embodiment of the present invention, the heat exchange auxiliary tube is provided with a spiral section in the middle for increasing the contact area.

[0013] In a preferred embodiment of the present invention, a plurality of baffles for slowing down liquid flow are fixed on the heat exchange auxiliary pipe. The baffles are conical and have a plurality of through holes.

[0014] The beneficial effects of this invention are as follows: This invention provides an integrated refrigeration efficiency enhancement unit for a cold storage facility with waste heat recovery and heat pump circulation. By installing a waste heat recovery component inside the insulated box and placing the insulated box outside the condenser, it can fully collect the condensation waste heat released during condenser operation, completely solving the problem of traditional cold storage refrigeration systems directly discharging waste heat to the outside, resulting in ineffective energy loss. The waste heat recovery component adopts a combination structure of a heat exchange tank, a main heat exchange pipe, annularly arranged auxiliary heat exchange pipes, and upper and lower heat exchange plates. The auxiliary heat exchange pipes have a spiral section in the middle, a fixed conical baffle on the surface, and through holes. On the one hand, the spiral section increases the heat exchange contact area; on the other hand, the conical baffle slows down the liquid flow rate, prolonging the heat exchange time. Simultaneously, the through hole design prevents liquid stagnation, ensuring heat exchange uniformity and significantly improving waste heat recovery efficiency. It can fully capture and effectively utilize the heat released by the condenser, reducing energy waste. Furthermore, by combining the heat pump unit with the refrigeration system, the recovered waste heat can be fed back into the system cycle, further reducing the energy consumption of the refrigeration system, breaking the vicious cycle of "waste heat emission - decreased heat dissipation efficiency - increased refrigeration energy consumption" in traditional cold storage, and significantly reducing the energy consumption cost of long-term operation of cold storage.

[0015] This invention abandons the traditional independent structural design of cold storage refrigeration systems and waste heat recovery devices. It integrates the heat pump unit, refrigeration system, and waste heat recovery components into a single structure consisting of an insulated box and an equipment box. The refrigeration system and heat pump unit share the condenser-evaporator and condenser, eliminating the need for additional independent waste heat recovery equipment and redundant heat exchange components. This significantly reduces the overall footprint and installation space requirements. Simultaneously, the integrated design simplifies piping connections, reduces the risk of leaks and frequent malfunctions, and improves system stability. Furthermore, the coordinated integration of components facilitates later inspection, maintenance, and debugging, reducing installation and maintenance costs and workload. This addresses the technical pain points of complex piping and poor compatibility in existing integrated equipment.

[0016] This invention, through a rationally designed system connection relationship, enables the heat pump unit and the refrigeration system to share the condenser and evaporator, achieving synergistic operation between the two systems. This avoids the problems of low energy utilization and poor system compatibility caused by the independent operation of traditional equipment. The heat pump unit, connected sequentially via the condenser, evaporator, compressor, condenser, and expansion valve, complements the refrigeration system. On one hand, it assists the refrigeration system in improving cooling efficiency; on the other hand, it further optimizes the system's energy consumption structure through waste heat recovery. Simultaneously, the close cooperation between the waste heat recovery components and the condenser prevents the ambient temperature from rising due to condenser waste heat discharge, ensuring the condenser is always in a state of efficient heat dissipation. This, in turn, guarantees stable refrigeration efficiency and achieves the core objective of improving refrigeration efficiency. For cold storage scenarios, stable and efficient refrigeration effectively maintains the uniformity of the low-temperature environment within the cold storage, preventing the freshness of stored goods from declining due to temperature fluctuations, further improving the preservation quality of the cold storage, and meeting the high-quality requirements of fresh food storage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the integrated machine for waste heat recovery and refrigeration efficiency enhancement of a fresh-locking frozen storage with heat pump circulation provided in a specific embodiment of the present invention; Figure 2 yes Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 yes Figure 1 Enlarged structural diagram at point B; Figure 4 yes Figure 1 Enlarged structural diagram at point C.

[0018] In the picture: 1. Condenser; 11. Output pipe; 12. Input pipe; 13. Water pump; 21. Heat exchange tank; 22. First heat exchange main pipe; 23. Second heat exchange main pipe; 24. Heat exchange auxiliary pipe; 25. First heat exchange plate; 26. Second heat exchange plate; 27. Spiral section; 28. Baffle; 29. ​​Through hole; 31. Drive shaft; 32. Stirring blade; 33. First drive shaft; 34. First drive blade; 35. Second drive shaft; 36. Second drive blade. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1-4As shown in the embodiment, an integrated refrigeration efficiency enhancement unit for a freezer with waste heat recovery and heat pump circulation is provided. It includes an insulated box and an equipment box, with a heat pump unit and a refrigeration system housed within the equipment box. The heat pump unit is connected to the refrigeration system and includes a condenser-evaporator, a compressor, a condenser 1, and an expansion valve connected in sequence. Pipe connections are sealed with gaskets to prevent refrigerant leakage. The refrigeration system and the heat pump unit share the condenser-evaporator and condenser 1, eliminating the need for additional independent condensing and evaporating components. This simplifies the system structure, reduces equipment manufacturing costs, and enables synergistic operation of the two systems. The refrigeration system and the heat pump unit share the condenser-evaporator and condenser 1. The insulated box is located outside the condenser 1, and a waste heat recovery component is installed inside the insulated box to fully capture the waste heat released from the condenser 1.

[0021] The heat pump unit and refrigeration system adopt a collaborative integrated design, sharing the condenser-evaporator and condenser 1. This eliminates the need for additional redundant heat exchange components, simplifying the internal structure, reducing the equipment's footprint and installation costs, and improving the compatibility and collaborative operating efficiency of the two systems. It avoids the problems of complex piping and frequent malfunctions caused by independent setups in traditional equipment. The heat pump unit is connected sequentially as the condenser-evaporator, compressor, condenser 1, and expansion valve, forming a complete heat pump cycle. The refrigeration system is connected to the condenser-evaporator and condenser 1 of the heat pump unit via piping. The shared components enable the linkage between the refrigeration and heat pump cycles, allowing the heat pump cycle to assist the refrigeration system in improving cooling efficiency and providing a pathway for energy reuse after waste heat recovery.

[0022] Furthermore, the waste heat recovery component includes a heat exchange tank 21, a first heat exchange main pipe 22, a second heat exchange main pipe 23, and multiple heat exchange auxiliary pipes 24. The heat exchange tank 21 is installed inside an insulated box. The first heat exchange main pipe 22 is embedded in the inner bottom wall of the heat exchange tank 21, and the second heat exchange main pipe 23 is embedded in the inner top wall of the heat exchange tank 21. The multiple heat exchange auxiliary pipes 24 are vertically arranged inside the heat exchange tank 21 and are arranged in a ring. The upper end of the first heat exchange main pipe 22 is connected to a first heat exchange plate 25, which has a hollow internal structure. The first heat exchange main pipe 22 communicates with the first heat exchange plate 25. The lower end of the second heat exchange main pipe 23 is connected to a second heat exchange plate 26, which also has a hollow internal structure. The lower end of the second heat exchange main pipe 23 communicates with the second heat exchange plate 26. The upper end of the heat exchange auxiliary pipe 24 is connected to the second heat exchange plate 26, and the lower end of the heat exchange auxiliary pipe 24 is connected to the first heat exchange plate 25.

[0023] The heat exchange tank 21 is fixedly installed inside the insulation box, providing a stable space for waste heat exchange. The first heat exchange main pipe 22 is embedded in the inner bottom wall of the heat exchange tank 21, and the second heat exchange main pipe 23 is embedded in the inner top wall of the heat exchange tank 21. The two are arranged vertically to provide the main channel for the flow of the heat exchange medium. Multiple heat exchange auxiliary pipes 24 are vertically arranged inside the heat exchange tank 21 and are uniformly arranged in a ring. This ring arrangement allows the heat exchange auxiliary pipes 24 to contact the heat exchange medium inside the heat exchange tank 21 from all directions, improving heat exchange uniformity and efficiency. To achieve efficient connection between the main heat exchange pipe and the auxiliary heat exchange pipe 24, the upper end of the first heat exchange pipe 22 is connected to the first heat exchange plate 25, and the lower end of the second heat exchange pipe 23 is connected to the second heat exchange plate 26. Both heat exchange plates adopt an internally hollow structure design. The first heat exchange pipe 22 is internally connected to the first heat exchange plate 25, and the second heat exchange pipe 23 is internally connected to the second heat exchange plate 26. At the same time, the upper end of the auxiliary heat exchange pipe 24 is fixedly connected to and connected to the second heat exchange plate 26, and the lower end of the auxiliary heat exchange pipe 24 is fixedly connected to and connected to the first heat exchange plate 25. This allows the heat exchange medium to enter the first heat exchange plate 25 from the first heat exchange pipe 22, and then flow upward to the second heat exchange plate 26 through multiple annularly arranged auxiliary heat exchange pipes 24, and finally converge to the second heat exchange pipe 23, forming a complete waste heat exchange loop, ensuring that the heat exchange medium can fully absorb the waste heat released by the condenser 1.

[0024] Furthermore, the condenser 1 is connected to the lower end of the first heat exchange main pipe 22 via the output pipe 11, and the condenser 1 is connected to the upper end of the second heat exchange main pipe 23 via the input pipe 12. To ensure stable flow of the heat exchange medium, a water pump 13 is also installed on the output pipe 11. The water pump 13 provides power to drive the heat exchange medium to circulate between the condenser 1 and the waste heat recovery component, enabling the heat exchange medium to continuously absorb the waste heat released by the condenser 1 and complete the waste heat recovery process.

[0025] Furthermore, the heat exchange main pipe also includes a driving component, which includes a drive shaft 31, a stirring blade 32, a first drive shaft 33, and a second drive shaft 35. The first drive shaft 33 is rotatably connected to the first heat exchange main pipe 22 via a bracket. One end of the first drive shaft 33 passes through the first heat exchange plate 25 and is connected to the lower end of the drive shaft 31. The second drive shaft 35 is rotatably connected to the second heat exchange main pipe 23 via a bracket. One end of the second drive shaft 35 passes through the second heat exchange plate 26 and is connected to the upper end of the drive shaft 31. The drive shaft 31 is located inside the annular structure formed by multiple heat exchange auxiliary pipes 24, and multiple stirring blades 32 are evenly arranged on the drive shaft 31.

[0026] The driving component is used to drive the flow of heat exchange medium in the heat exchange tank 21, thereby improving the heat exchange uniformity. The driving component specifically consists of a drive shaft 31, stirring blades 32, a first drive shaft 33, and a second drive shaft 35. The first drive shaft 33 is rotatably connected to the inside of the first heat exchange main pipe 22 via a bracket, and one end of it passes through the first heat exchange plate 25 and is fixedly connected to the lower end of the drive shaft 31. The second drive shaft 35 is rotatably connected to the inside of the second heat exchange main pipe 23 via a bracket, and one end of it passes through the second heat exchange plate 26 and is fixedly connected to the upper end of the drive shaft 31. The drive shaft 31 is located inside the annular structure formed by multiple heat exchange auxiliary pipes 24. Multiple stirring blades 32 are uniformly fixedly installed on the drive shaft 31 and can rotate together with the drive shaft 31 to agitate the heat exchange medium in the heat exchange tank 21.

[0027] Furthermore, the first drive shaft 33 and the first heat exchange plate 25, and the second drive shaft 35 and the second heat exchange plate 26 are both connected by sealed bearings. A first drive paddle 34 is fixed on the first drive shaft 33 and is located inside the first heat exchange main pipe 22. A second drive paddle 36 is fixed on the second drive shaft 35 and is located inside the second heat exchange main pipe 23. When the heat exchange medium flows through the first heat exchange main pipe 22 and the second heat exchange main pipe 23 under the drive of the water pump 13, it will drive the first drive paddle 34 and the second drive paddle 36 to rotate, which in turn drives the transmission shaft 31 and the stirring blade 32 to rotate through the drive shaft. The stirring function can be realized without the need for an additional power source, which saves energy, simplifies the equipment structure, and achieves efficient use of energy.

[0028] Furthermore, a water pump 13 is installed on the output pipe 11.

[0029] Furthermore, a spiral section 27 for increasing the contact area is provided in the middle of the heat exchange auxiliary pipe 24.

[0030] Furthermore, multiple baffles 28 for slowing down liquid flow are fixed on the heat exchange auxiliary pipe 24. The baffles 28 are conical and have multiple through holes 29.

[0031] The spiral structure increases the contact area between the heat exchange auxiliary pipe 24 and the heat exchange medium, extending the contact time between them and thus improving the waste heat absorption effect. Simultaneously, multiple conical baffles 28 are fixedly installed on the surface of the heat exchange auxiliary pipe 24, with multiple through holes 29 on each baffle. The conical baffles 28 effectively slow down the flow velocity of the heat exchange medium within the heat exchange tank 21, further extending the heat exchange time. The through holes 29 design prevent the heat exchange medium from stagnating at the baffles 28, ensuring uniform flow of the heat exchange medium within the heat exchange tank 21, avoiding insufficient local heat exchange, and further optimizing the waste heat recovery effect.

[0032] After the refrigeration system is started, the low-temperature environment required for the cold storage is constructed through the condenser-evaporator and condenser 1 shared with the heat pump unit. When the condenser 1 is running, it will continuously release waste heat from condensation. This waste heat is intercepted by the external insulation box to avoid energy waste caused by emission into the external environment. At this time, the water pump 13 starts, driving the heat exchange medium to flow out of the condenser 1 through the output pipe 11 and into the first heat exchange main pipe 22. Then it flows into the first heat exchange plate 25 and is divided by the first heat exchange plate 25 into multiple annularly arranged heat exchange auxiliary pipes 24. During the upward flow of the heat exchange medium in the heat exchange auxiliary pipes 24, it fully exchanges heat with the medium in the heat exchange tank 21 through the spiral part 27 and the conical baffle 28 of the heat exchange auxiliary pipes 24, absorbing the waste heat released by the condenser 1. At the same time, when the heat exchange medium flows through the first heat exchange main pipe 22 and the second heat exchange main pipe 23, it drives the first drive paddle 34 and the second drive paddle 36 to rotate, driving the transmission shaft 31 and the stirring blade 32 to rotate, stirring the medium in the heat exchange tank 21, ensuring uniform heat exchange, and further improving the waste heat absorption efficiency.

[0033] After absorbing waste heat, the heat exchange medium flows into the second heat exchange plate 26 through the auxiliary heat exchange pipe 24. After being collected, it flows back to the condenser 1 through the second main heat exchange pipe 23 and the input pipe 12, completing the waste heat recovery cycle. At the same time, the heat pump unit starts up and realizes the heat pump cycle through the loop composed of the condenser-evaporator, compressor, condenser 1 and expansion valve. The recovered waste heat is fed back to the refrigeration system and the heat pump cycle, which helps the refrigeration system improve the refrigeration effect, further reduces the energy consumption of the refrigeration system, and ensures that the refrigeration system can operate stably and efficiently.

[0034] Throughout the entire operation, the integrated unit achieves integrated and coordinated operation of refrigeration, heat pump assistance, and waste heat recovery through its integrated design. This not only fully recovers and utilizes condensation waste heat, reducing energy waste, but also improves refrigeration efficiency and lowers the energy consumption cost of cold storage operation. At the same time, the integrated structure simplifies pipeline connections, improves the stability of equipment operation, and facilitates later inspection, maintenance, and debugging. The stable refrigeration effect can effectively maintain the uniformity of the low-temperature environment in the cold storage, avoiding the decline in freshness of fresh goods due to temperature fluctuations, and fully meeting the high-quality storage requirements of fresh-locking cold storage.

[0035] Other techniques in this embodiment are based on existing technologies.

[0036] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A heat pump-circulated integrated unit for waste heat recovery and refrigeration efficiency enhancement in a fresh-locking cold storage facility, characterized in that: It includes an insulated box and an equipment box, wherein a heat pump unit and a refrigeration system are installed in the equipment box; the heat pump unit is connected to the refrigeration system, and the heat pump unit includes a condenser-evaporator, a compressor, a condenser (1) and an expansion valve connected in sequence, and the refrigeration system and the heat pump unit share the condenser-evaporator and the condenser (1). The heat preservation box is located outside the condenser (1), and a waste heat recovery component is installed inside the heat preservation box.

2. The integrated refrigeration efficiency enhancement unit for waste heat recovery in a fresh-locking cold storage with heat pump circulation as described in claim 1, characterized in that: The waste heat recovery components include a heat exchange tank (21), a first heat exchange main pipe (22), a second heat exchange main pipe (23), and multiple heat exchange auxiliary pipes (24). The heat exchange tank (21) is installed inside the insulation box. The first heat exchange main pipe (22) is embedded in the inner bottom wall of the heat exchange tank (21), and the second heat exchange main pipe (23) is embedded in the inner top wall of the heat exchange tank (21). A plurality of heat exchange auxiliary pipes (24) are vertically installed inside the heat exchange tank (21), and the plurality of heat exchange auxiliary pipes (24) are arranged in a ring. The upper end of the first heat exchange main pipe (22) is connected to the first heat exchange plate (25), the first heat exchange plate (25) has a hollow structure inside, the first heat exchange main pipe (22) is connected to the first heat exchange plate (25), the lower end of the second heat exchange main pipe (23) is connected to the second heat exchange plate (26), the second heat exchange plate (26) has a hollow structure inside, the lower end of the second heat exchange main pipe (23) is connected to the second heat exchange plate (26); The upper end of the heat exchange auxiliary pipe (24) is connected to the second heat exchange plate (26), and the lower end of the heat exchange auxiliary pipe (24) is connected to the first heat exchange plate (25).

3. The integrated refrigeration efficiency enhancement unit for waste heat recovery in a cold storage facility with heat pump circulation as described in claim 2, characterized in that: The condenser (1) is connected to the lower end of the first heat exchange main pipe (22) through the output pipe (11), and the condenser (1) is connected to the upper end of the second heat exchange main pipe (23) through the input pipe (12).

4. The integrated refrigeration efficiency enhancement unit for waste heat recovery in a fresh-locking frozen storage facility with heat pump circulation as described in claim 3, characterized in that: The heat exchange main pipe also includes a drive component, which includes a drive shaft (31), a stirring blade (32), a first drive shaft (33), and a second drive shaft (35). The first drive shaft (33) is rotatably connected to the first heat exchange main pipe (22) via a bracket. One end of the first drive shaft (33) passes through the first heat exchange plate (25) and is connected to the lower end of the transmission shaft (31). The second drive shaft (35) is rotatably connected to the second heat exchange main pipe (23) via a bracket. One end of the second drive shaft (35) passes through the second heat exchange plate (26) and is connected to the upper end of the transmission shaft (31). The drive shaft (31) is located inside the annular structure formed by the multiple heat exchange auxiliary pipes (24), and multiple stirring blades (32) are evenly arranged on the drive shaft (31).

5. The integrated refrigeration efficiency enhancement unit for waste heat recovery in a fresh-locking cold storage with heat pump circulation as described in claim 4, characterized in that: The first drive shaft (33) is connected to the first heat exchange plate (25), and the second drive shaft (35) is connected to the second heat exchange plate (26) through sealed bearings. A first drive paddle (34) is fixed on the first drive shaft (33) and the first drive paddle (34) is located inside the first heat exchange main pipe (22). A second drive paddle (36) is fixed on the second drive shaft (35) and the second drive paddle (36) is located inside the second heat exchange main pipe (23).

6. The integrated refrigeration efficiency enhancement unit for waste heat recovery in a cold storage facility with heat pump circulation as described in claim 5, characterized in that: A water pump (13) is installed on the output pipe (11).

7. The integrated refrigeration efficiency enhancement unit for waste heat recovery in a cold storage facility with heat pump circulation as described in claim 6, characterized in that: The heat exchange auxiliary pipe (24) is provided with a spiral section (27) in the middle to increase the contact area.

8. The integrated refrigeration efficiency enhancement unit for waste heat recovery in a fresh-locking cold storage with heat pump circulation as described in claim 7, characterized in that: The heat exchange auxiliary pipe (24) is fixed with a plurality of baffles (28) for slowing down the flow of liquid. The baffles (28) are cone-shaped and have a plurality of through holes (29).

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