Aquatic product heat pump drying system

Abstract

This utility model discloses a heat pump drying system for aquatic products, relating to the field of heat pump drying technology. It includes a drying chamber and a heat pump mechanism, with the drying chamber located on one side of the heat pump mechanism. The heat pump mechanism has a reflux mechanism and a base mechanism at its upper and lower ends. This utility model achieves two-stage dehumidification of the humid airflow by setting up a dual evaporator structure (evaporator one and evaporator two), respectively arranged in the reflux chamber and dehumidification chamber, thus improving dehumidification efficiency and avoiding the problems of incomplete dehumidification and high residual humidity associated with traditional single evaporators. This enhances drying quality and energy utilization efficiency. Through the reflux mechanism and secondary waste heat recovery components, part of the dehumidified airflow is returned to the system for secondary dehumidification and waste heat recovery. Simultaneously, a heat sink transfers the recovered heat to the air inlet chamber to preheat the external air entering the system, further improving the system's heat recovery efficiency and energy utilization rate.

Description

Technical Field

[0001] This utility model relates to the field of heat pump technology, and in particular to a heat pump drying system for aquatic products. Background Technology

[0002] Currently, the main methods for drying aquatic products are traditional hot air drying and sun drying. Sun drying is subject to weather conditions, has a long drying cycle, poor hygiene, and is prone to product contamination, resulting in inconsistent quality. Although hot air drying is widely used, the high drying temperature can easily lead to problems such as protein denaturation, lipid oxidation, surface hardening, and poor rehydration in aquatic products.

[0003] Heat pump drying is a method that uses a heat pump to absorb heat from a low-temperature heat source, reduce the relative humidity of the medium, and release it at a higher temperature to dry the material. Heat pump drying makes full use of the latent heat of water vapor discharged during drying and recovers it. It has low energy consumption and is an energy-saving new technology.

[0004] Chinese patent CN211823511U discloses a closed-loop heat pump drying device. The closed-loop heat pump drying device includes a heat pump drying unit; a drying chamber fixedly installed on one side of the heat pump drying unit, with the exhaust duct of the heat pump drying unit fixedly connected to the drying chamber; a distribution duct fixedly installed on the inner walls of both sides of the drying chamber; multiple outlet ducts fixedly installed at the bottom of the distribution duct; and two rotating shafts rotatably installed on the top and bottom inner walls of the distribution duct, respectively, with their ends extending away from each other to the outside of the distribution duct. The airflow discharged from this heat pump drying device is not only highly humid but also re-enters the heat pump drying device through external airflow, thus entering a cycle, resulting in low dehumidification efficiency and low energy utilization. Utility Model Content

[0005] This invention aims to solve the aforementioned problems of existing heat pump drying devices by providing a heat pump drying system for aquatic products that can improve dehumidification efficiency and energy utilization.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This utility model discloses a heat pump drying system for aquatic products, including a drying chamber and a heat pump mechanism. The drying chamber is located on one side of the heat pump mechanism. The heat pump mechanism is provided with a reflux mechanism and a base mechanism at its upper and lower ends. The heat pump mechanism includes a housing and an evaporator, a condenser, and an evaporator installed inside the housing, as well as a waste heat recovery core in the middle of the housing. The reflux mechanism includes a reflux channel and secondary waste heat recovery components evenly distributed inside the reflux channel. Each secondary waste heat recovery component is provided with a heat dissipation rod below it. The base mechanism includes a base.

[0007] Preferably, the interior of the housing is divided into an air inlet chamber, a reflux chamber, a heating chamber, and a dehumidification chamber by a waste heat recovery core. Evaporator 1 is installed inside the reflux chamber, condenser is installed inside the heating chamber, and evaporator 2 is installed inside the dehumidification chamber. Evaporator 1 is attached to the waste heat recovery core.

[0008] Preferably, one side of the chamber is equipped with an exhaust fan and an inlet fan, and the other side is equipped with an inlet fan. The inlet fan connects to the reflux chamber, the exhaust fan connects to the heating chamber, and the inlet fan connects to the air inlet chamber. The exhaust fan connects to the dehumidification chamber. The inlet fan introduces the hot and humid airflow from the drying chamber into the chamber. The exhaust fan discharges part of the airflow that has been dehumidified by the evaporator to the outside. The inlet fan also introduces the external airflow into the chamber, where it is heated by the condenser and then transported to the interior of the drying chamber by the exhaust fan, thereby drying the aquatic products placed in the drying chamber.

[0009] Preferably, the two ends of the return channel are respectively provided with an air inlet and an air outlet, and the air inlet and air outlet are respectively connected to the top of the connecting box two and the connecting box one.

[0010] Preferably, the secondary waste heat recovery assembly includes a flow-guiding heat absorption plate and fins that are uniformly and vertically arranged and fixedly connected to both sides of the flow-guiding heat absorption plate. The top end of the heat sink is fixedly connected to the flow-guiding heat absorption plate, and the bottom end of the heat sink is located inside the air inlet cavity.

[0011] Preferably, the base has two water collection boxes embedded inside, which are located below the reflux chamber and the dehumidification chamber, respectively, and a compressor is installed inside the heating chamber.

[0012] Therefore, this utility model has the following beneficial effects: (1) The dual evaporator structure (evaporator one and evaporator two) is adopted and arranged in the reflux chamber and dehumidification chamber respectively, so as to realize the two-stage dehumidification treatment of the hot and humid airflow, improve the dehumidification efficiency, avoid the problem of incomplete dehumidification and high residual humidity of traditional single evaporator, and improve the drying quality and energy utilization efficiency. (2) By setting up a reflux mechanism and a secondary waste heat recovery component, part of the dehumidified airflow is guided back to the system for secondary dehumidification and waste heat recovery. At the same time, the heat recovery rod is used to transfer the recovered heat to the air inlet cavity to preheat the external air entering the system, which further improves the heat recovery efficiency and energy utilization rate of the system. Attached Figure Description

[0013] Figure 1 This is a perspective view of the entire utility model.

[0014] Figure 2This is a schematic diagram of the disassembled structure of the heat pump mechanism of this utility model.

[0015] Figure 3 This is a top internal view of the heat pump mechanism of this utility model.

[0016] Figure 4 This is a schematic diagram of the reflux mechanism of this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of the heat recovery component of this utility model.

[0018] Figure 6 This is a schematic diagram of the base mechanism of this utility model.

[0019] In the diagram: 1. Drying room; 11. Partition; 2. Heat pump mechanism; 21. Cabinet; 211. Connecting box one; 212. Connecting box two; 213. Fan; 22. Outlet fan one; 23. Inlet fan one; 24. Inlet fan two; 25. Outlet fan two; 26. Waste heat recovery core; 27. Condenser; 28. Evaporator one; 29. ​​Evaporator two; 201. Compressor; 202. Air inlet chamber; 203. Return chamber; 204. Heating chamber; 205. Dehumidification chamber; 3. Base mechanism; 31. Base; 32. Water collection box; 4. Return mechanism; 41. Return channel; 42. Air inlet; 43. Air outlet; 44. Heat recovery assembly; 441. Guide heat absorption plate; 442. Fin plate; 45. Heat sink. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] According to the appendix Figure 1 - Figure 6 As shown, this utility model provides a heat pump drying system for aquatic products, including a drying chamber 1 and a heat pump mechanism 2. The drying chamber 1 is located on one side of the heat pump mechanism 2. The upper and lower ends of the heat pump mechanism 2 are provided with a reflux mechanism 4 and a base mechanism 3. The heat pump mechanism 2 includes a housing 21 and an evaporator 28, a condenser 27 and an evaporator 29 installed inside the housing 21. It also includes a waste heat recovery core 26 in the middle of the housing 21. The reflux mechanism 4 includes a reflux channel 41 and secondary waste heat recovery components 44 evenly distributed inside the reflux channel 41. Each secondary waste heat recovery component 44 is provided with a heat dissipation rod 45 below it. The base mechanism 3 includes a base 31. The drying room 1 is an existing drying room that can be built. It is equipped with partitions 11 inside to allow the airflow inside to circulate. The waste heat recovery core 26 is a heat exchange core. After the hot and humid airflow and the external airflow cross each other, it can transfer heat to the passing external airflow to recover and utilize waste heat. Control equipment can be connected to the outside of the heat pump mechanism 2 to operate the heat pump drying equipment.

[0022] Specifically, the interior of the housing 21 is divided into an air inlet chamber 202, a reflux chamber 203, a heating chamber 204, and a dehumidification chamber 205 by the waste heat recovery core 26. Evaporator 28 is installed inside the reflux chamber 203, condenser 27 is installed inside the heating chamber 204, and evaporator 29 is installed inside the dehumidification chamber 205. Evaporator 28 is attached to the waste heat recovery core 26. The waste heat recovery core 26 is installed with a support frame and a partition frame, which divides the interior of the housing 21 into five parts, with the waste heat recovery core 26 installed in the middle part. One side of the housing 21 is equipped with an exhaust fan 22 and an inlet fan 23, while the other side is equipped with an inlet fan 24. The inlet fan 23 is fitted into the return cavity 203, the exhaust fan 22 into the heating cavity 204, and the inlet fan 24 into the air inlet cavity 202. One side of the housing 21 is equipped with an exhaust fan 25, which is fitted into the dehumidification cavity 205. The outer side of the housing 21 is equipped with a connecting box 211 and a connecting box 212. Each of the two connecting boxes 212 has a fan 213 installed at its top. The first connecting box 211 is connected to the return chamber 203, and the second connecting box 212 is connected to the dehumidification chamber 205. The first connecting box 211 and the second connecting box 212 are integrated with the box body 21. The fan 213 on the first connecting box 211 is used to draw in airflow, while the fan 213 on the second connecting box 212 guides part of the airflow in the dehumidification chamber 205 into the return channel 41. The two ends of the return channel 41 are respectively provided with an air inlet 42 and an air outlet 43, which are respectively connected to the top of the second connecting box 212 and the first connecting box 211. The middle part of the return channel 41 is similar to a narrow tube. The port is larger than the other end, thus increasing the flow velocity when the airflow passes through. This allows the airflow entering the return cavity 203 to quickly pass through the evaporator 28 and the waste heat recovery core 26, preventing the airflow from being guided by the vertical airflow when passing through the waste heat recovery core 26. The secondary waste heat recovery assembly 44 includes a flow-guiding heat absorption plate 441 and fins 442 that are evenly and vertically arranged and fixedly connected to both sides of the flow-guiding heat absorption plate 441. The top end of the heat dissipation rod 45 is fixedly connected to the flow-guiding heat absorption plate 441, and the bottom end of the heat dissipation rod 45 is located inside the air inlet cavity 202. The spacing of the flow-guiding heat absorption plate 441 near the air inlet 42 is larger than that near the return channel 41, thus allowing the fins 442 to pass through quickly. 2. After more fully contacting the airflow and absorbing heat, the heat is transferred through the heat dissipation rod 45 at the bottom of the heat-absorbing plate 441; two water collection boxes 32 are located below the return chamber 203 and the dehumidification chamber 205 respectively; a compressor 201 is installed inside the heating chamber 204; the compressor 201 is used to deliver refrigerant to the evaporator 1 28 and the evaporator 29, so that the evaporator 1 28 and the evaporator 29 can be refrigerated and dehumidified to the passing hot and humid airflow. The refrigerant in the evaporator 1 28 and the evaporator 29 enters the condenser 27 through the expansion valve and becomes a heat medium, so that the condenser 27 generates heat and heats the passing airflow.

[0023] The working principle of this utility model is as follows: When external air enters the air inlet chamber 202 through the inlet fan 24 and passes through the waste heat recovery core 26, it reaches the heating chamber 204. At this point, the condenser 27 heats this airflow, blowing the hot, dry air into the drying chamber 1 to dry the aquatic products inside. During the drying process, the airflow carries away moisture from the aquatic products, forming a humid airflow. This humid airflow is guided by the inlet fan 23 into the return chamber 203 and passes sequentially through the evaporator 28 and the waste heat recovery core 26. Upon passing through the evaporator 28, initial dehumidification occurs, and the condensed water falls into the water collection box 32. Upon passing through the waste heat recovery core 26, the airflow crosses with the external airflow, exchanging heat and performing initial waste heat recovery. After the initial passage through the waste heat recovery core 26, the humid airflow reaches the dehumidification chamber 205, where it is further dehumidified by the evaporator 29. The airflow is placed to the outside, where the hot and humid air can be dehumidified by the dual evaporators. This not only improves the dehumidification efficiency, but also prevents the airflow from mixing with the hot and humid air when it returns to the housing 21 after being guided by the second fan 24. In addition, part of the airflow in the dehumidification chamber 205 is dehumidified and discharged by the second evaporator 29, while the other part of the airflow is guided by the fan 213, so that the airflow passes through the second connecting box 212, the return channel 41 and the first connecting box 211 in sequence and is guided back to the return chamber 203 for secondary dehumidification. During this process, the secondary waste heat recovery component 44 inside the return channel 41 absorbs the residual heat in the airflow and transfers the heat to the inside of the air inlet chamber 202 through the heat sink 45. This preheats the airflow that just enters the air inlet chamber 202 and performs secondary waste heat recovery, which not only further improves the dehumidification efficiency, but also increases the efficiency of waste heat recovery.

[0024] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A heat pump drying system for aquatic products, comprising a drying chamber (1) and a heat pump mechanism (2), characterized in that, The drying room (1) is located on one side of the heat pump mechanism (2). The heat pump mechanism (2) is provided with a reflux mechanism (4) and a base mechanism (3) at its upper and lower ends. The heat pump mechanism (2) includes a box (21) and an evaporator (28), a condenser (27) and an evaporator (29) installed inside the box (21). It also includes a waste heat recovery core (26) in the middle of the box (21). The reflux mechanism (4) includes a reflux channel (41) and secondary waste heat recovery components (44) evenly distributed inside the reflux channel (41). Heat sinks (45) are provided below each of the secondary waste heat recovery components (44). The base mechanism (3) includes a base (31).

2. The system of claim 1, wherein, The interior of the housing (21) is divided into an air inlet chamber (202), a reflux chamber (203), a heating chamber (204), and a dehumidification chamber (205) by a waste heat recovery core (26). Evaporator 1 (28) is installed inside the reflux chamber (203), condenser (27) is installed inside the heating chamber (204), and evaporator 2 (29) is installed inside the dehumidification chamber (205). Evaporator 1 (28) is attached to the waste heat recovery core (26).

3. The system of claim 1, wherein, One side of the housing (21) is equipped with an outflow fan (22) and an inflow fan (23), and the other side of the housing (21) is equipped with an inflow fan (24). The inflow fan (23) is connected to the return cavity (203), the outflow fan (22) is connected to the heating cavity (204), and the inflow fan (24) is connected to the air inlet cavity (202). One side of the housing (21) is equipped with an outflow fan (25), and the outflow fan (25) is connected to the dehumidification cavity (205).

4. The system of claim 1, wherein, Connecting box one (211) and connecting box two (212) are installed on the outside of the box (21). Fans (213) are installed on the top of both connecting box one (211) and connecting box two (212). Connecting box one (211) is connected to the return cavity (203), and connecting box two (212) is connected to the dehumidification cavity (205).

5. The system of claim 1, wherein, The return channel (41) has an air inlet (42) and an air outlet (43) at its two ends, respectively. The air inlet (42) and the air outlet (43) are respectively connected to the top of the connecting box two (212) and the connecting box one (211).

6. The system of claim 1, wherein, The secondary waste heat recovery assembly (44) includes a flow-guiding heat absorption plate (441) and fins (442) that are evenly and vertically arranged on both sides of the flow-guiding heat absorption plate (441). The top end of the heat sink (45) is fixedly connected to the flow-guiding heat absorption plate (441), and the bottom end of the heat sink (45) is located inside the air inlet cavity (202).

7. The system of claim 1, wherein, The base (31) is equipped with two water collection boxes (32), which are located below the reflux chamber (203) and the dehumidification chamber (205), respectively. The heating chamber (204) is equipped with a compressor (201).

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