Heat pump tobacco curing barn

Abstract

The utility model discloses a heat pump tobacco curing barn which comprises a barn body, a heat pump system, an airflow adjusting device and a tobacco leaf placing frame, the heat pump system comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger which are sequentially communicated to form a loop, and the heat pump system further comprises an air outlet pipeline. A first fan and a first heat exchanger which are oppositely arranged are arranged in the air outlet pipeline, the air outlet pipeline comprises a plurality of air outlets, the multiple air outlets communicate with the room body, the airflow adjusting device and the tobacco leaf containing frame are both arranged in the room body, and the multiple air deflectors are rotatably arranged on the inner wall of the room body; the driving mechanism is in transmission connection with the air guide plate to drive the air guide plate to rotate. According to the heat pump tobacco curing barn, the driving mechanism controls the air guide plate to rotate to disperse and guide hot air, the flowing direction and angle of the hot air in the barn body are changed, the diffusion range of the hot air is expanded, the uniformity of airflow is enhanced, the hot air makes full contact with tobacco leaves, heat is transferred, and the curing quality and efficiency of the tobacco leaves are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tobacco curing house technical field especially relates to a heat pump tobacco curing house. BACKGROUND

[0002] In the tobacco leaf curing process, the uniform distribution of airflow in the tobacco curing house plays a crucial role in the curing quality of tobacco leaves. The traditional tobacco curing house often has the problem of uneven airflow, which can cause large differences in heating and ventilation conditions in different parts of the tobacco leaves, thereby affecting the overall curing effect of the tobacco leaves, causing some tobacco leaves to be over-cured and some tobacco leaves to be under-cured, and reducing the quality and economic benefits of the tobacco leaves.

[0003] Therefore, a new type of heat pump tobacco curing house is needed to solve the above problems. SUMMARY

[0004] The main purpose of the utility model is to provide a heat pump tobacco curing house to solve the problem of uneven temperature in the heat pump tobacco curing house in the prior art caused by uneven airflow.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] According to the heat pump tobacco curing house of the present application, the heat pump system includes a compressor, a first heat exchanger, a throttling device and a second heat exchanger connected in sequence to form a loop, the heat pump system further includes an air outlet duct, the first fan and the first heat exchanger are oppositely arranged in the air outlet duct, the air outlet duct includes a plurality of air outlets, the plurality of air outlets are in communication with the house body, the airflow adjusting device and the tobacco leaf placing rack are arranged in the house body, the airflow adjusting device includes a plurality of air deflectors and a driving mechanism, the plurality of air deflectors are rotatably arranged on the inner wall of the house body, and the driving mechanism is in transmission connection with the air deflectors to drive the rotation of the air deflectors.

[0007] According to the heat pump tobacco curing house of the present application, the side wall and the top wall of the house body are provided with the air deflectors, the outer periphery of each air outlet is surrounded by a plurality of air deflectors, and the air deflectors are arranged along the radial direction of the air outlet.

[0008] Optionally, the air deflector is in the shape of a trapezoid, the air deflector includes a large end and a small end, the large end is close to the tobacco leaf placing rack, and the two opposite main surfaces of the air deflector are in the shape of an arc.

[0009] According to the heat pump tobacco curing house of the present application, the air outlet is provided with a flow guide cover, the flow guide cover is in the shape of a horn with gradually increasing diameter along the airflow outflow direction, and the flow guide cover is oppositely arranged with the tobacco leaf placing rack.

[0010] Optionally, the inner wall of the fairing is provided with a plurality of protruding fairing strips, which are distributed in a spiral shape.

[0011] According to the heat pump tobacco curing house, the top of the house body is provided with a return air duct, an air inlet of the return air duct is communicated with the inside of the house body, an air outlet of the return air duct is communicated with an air inlet of the air outlet duct, and a filter screen is arranged at the air inlet of the return air duct.

[0012] According to the heat pump tobacco curing house, the house body is provided with a temperature sensor, a humidity sensor and a controller, and the temperature sensor, the humidity sensor and the heat pump system are electrically connected with the controller.

[0013] According to the heat pump tobacco curing house, the inner wall of the house body is provided with a heat preservation layer.

[0014] According to the heat pump tobacco curing house, the tobacco leaf placing rack comprises a support frame and a plurality of layers of shelves arranged on the support frame, the shelves are circumferentially surrounded by baffle plates, the bottom of each shelf is provided with a plurality of ventilation holes, the support frame is provided with sliding guide rails, and the shelves are connected with the sliding guide rails so that at least part of the shelves can be pulled out of or pushed into the support frame.

[0015] Optionally, a plurality of partition bars are arranged on the shelves, the partition bars divide the shelves into a plurality of areas, and the partition bars are provided with signboard clamping grooves.

[0016] Compared with the prior art, the above technical solution provided by the utility model has the following advantages:

[0017] The heat pump system is started, the compressor compresses the low-temperature and low-pressure refrigerant into high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the first heat exchanger, heat exchange is carried out with the surrounding air in the first heat exchanger, heat is released, the refrigerant becomes medium-temperature and high-pressure liquid, the medium-temperature and high-pressure liquid becomes low-temperature and low-pressure liquid after pressure reduction through the throttling device, enters the second heat exchanger, the low-temperature and low-pressure liquid absorbs heat of the surrounding air in the second heat exchanger, evaporates into low-temperature and low-pressure gas, and then is sucked into the compressor again for compression, so circulation is carried out, the first fan sends the hot air after heat exchange with the first heat exchanger into the house body through the multiple air outlets of the air outlet pipeline, and the multiple air outlets can disperse the airflow and send the airflow into the house body, so that the uniform distribution of the hot air is facilitated; the airflow adjusting device and the tobacco leaf placing rack are arranged in the house body. The airflow adjusting device comprises multiple air deflectors and a driving mechanism, the multiple air deflectors are rotatably arranged on the inner wall of the house body, and the driving mechanism is in transmission connection with the air deflectors to drive the rotation of the air deflectors. The rotation angle of the air deflectors is controlled through the driving mechanism, when the hot air enters the house body from the air outlet, the driving mechanism controls the rotation of the air deflectors to disperse and guide the hot air, the flow direction and angle of the hot air in the house body are flexibly changed, the diffusion range of the hot air is expanded, the uniformity of the airflow is enhanced, the tobacco leaf placing rack is used for placing the tobacco leaves to be baked, the hot air flows around and inside the tobacco leaf placing rack, fully contacts the tobacco leaves and transfers heat, and therefore the baking quality and efficiency of the tobacco leaves are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure schematic view of the heat pump tobacco baking house is provided for the utility model embodiment;

[0019] Figure 2 An internal perspective view of the roof of the heat pump tobacco baking house is provided for the utility model embodiment;

[0020] Figure 3 An internal bottom view of the roof of the heat pump tobacco baking house is provided for the utility model embodiment;

[0021] Figure 4 A perspective view of the flow guide cover of the heat pump tobacco baking house is provided for the utility model embodiment;

[0022] Figure 5 A side view of the flow guide cover of the heat pump tobacco baking house is provided for the utility model embodiment.

[0023] Label explanation: house body 10, compressor 21, first heat exchanger 22, throttling device 23, second heat exchanger 24, air outlet pipeline 25, air outlet 251, first fan 26, flow guide cover 27, flow guide strip 271,

[0024] Airflow adjusting device 30, air deflector 31, tobacco leaf placing rack 40, shelf 41. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] As shown in Figure 1 and Figure 2 The heat pump tobacco curing house according to the embodiments of the present application includes a house body 10, a heat pump system, an air flow adjusting device 30 and a tobacco leaf placing rack 40. The heat pump system includes a compressor 21, a first heat exchanger 22, a throttling device 23 and a second heat exchanger 24 which are sequentially communicated to form a loop. The heat pump system further includes an air outlet pipeline 25. The first fan 26 and the first heat exchanger 22 are oppositely arranged in the air outlet pipeline 25. The air outlet pipeline 25 includes a plurality of air outlets 251 which are all communicated with the house body 10. The air flow adjusting device 30 and the tobacco leaf placing rack 40 are both arranged in the house body 10. The air flow adjusting device 30 includes a plurality of air deflectors 31 and a driving mechanism. The air deflectors 31 are rotatably arranged on the inner wall of the house body 10. The driving mechanism is in transmission connection with the air deflectors 31 to drive the air deflectors 31 to rotate.

[0027] According to the heat pump tobacco curing house provided in the embodiment of the present application, after the heat pump system is started, the compressor 21 compresses the low-temperature and low-pressure refrigerant into high-temperature and high-pressure gas, the high-temperature and high-pressure gas exchanges heat with the surrounding air in the first heat exchanger 22, releases heat, and changes into medium-temperature and high-pressure liquid, the medium-temperature and high-pressure liquid changes into low-temperature and low-pressure liquid after being decompressed by the throttling device 23, and enters the second heat exchanger 24, in which the low-temperature and low-pressure liquid absorbs the heat of the surrounding air and evaporates into low-temperature and low-pressure gas, which is then sucked into the compressor 21 for compression again, and the cycle continues, the first fan 26 sends the hot air after heat exchange with the first heat exchanger 22 into the house body 10 through the multiple air outlets 251 of the air outlet pipeline 25, and the multiple air outlets 251 can disperse the airflow into the house body 10, which is beneficial to the uniform distribution of the hot air; the airflow adjusting device 30 and the tobacco leaf placing rack 40 are both arranged in the house body 10. The airflow adjusting device 30 includes multiple air deflectors 31 and a driving mechanism, the multiple air deflectors 31 are rotatably arranged on the inner wall of the house body 10, and the driving mechanism is in transmission connection with the air deflectors 31 to drive the air deflectors 31 to rotate. The driving mechanism controls the rotation angle of the air deflectors 31, and when the hot air enters the house body 10 from the air outlets 251, the driving mechanism controls the air deflectors 31 to rotate to disperse and guide the hot air, flexibly changes the flow direction and angle of the hot air in the house body 10, expands the diffusion range of the hot air, and enhances the uniformity of the airflow, and the tobacco leaf placing rack 40 is used for placing the tobacco leaves to be cured, the hot air flows around and inside the tobacco leaf placing rack 40, fully contacts the tobacco leaves, and transfers heat, thereby improving the curing quality and efficiency of the tobacco leaves.

[0028] As shown in Figure 2 and Figure 3 , according to the heat pump tobacco curing house provided in the embodiment of the present application, the side wall and the top wall of the house body 10 are both provided with air deflectors 31, the outer periphery of each air outlet 251 is surrounded by multiple air deflectors 31, and the air deflectors 31 are arranged along the radial direction of the air outlet 251.

[0029] In the above embodiment, the air deflectors 31 are arranged in this way to guide the hot air flowing out of the air outlets 251 at multiple angles, and when the hot air blows out of the air outlets 251, the air deflectors 31 arranged along the radial direction can disperse the hot air to different directions, avoid the hot air from being concentrated in a certain area, and thereby improve the uniformity of the distribution of the hot air in the house body 10.

[0030] As shown in Figure 2 and Figure 3 , in some embodiments, the air deflectors 31 are trapezoidal in shape, the air deflectors 31 include a large end and a small end, the large end is close to the tobacco leaf placing rack 40, and the two opposite main surfaces of the air deflectors 31 are arc-shaped.

[0031] In detail, the air deflector 31 with trapezoidal shape and arc surface is designed to better guide the hot air to flow in a specific streamline trajectory; the large end close to the tobacco placing rack 40 helps to expand the coverage of hot air, so that more tobacco can be affected by the hot air; the arc surface can reduce the turbulence and resistance of hot air during flow, making the flow of hot air more smooth and stable, and further improving the uniformity of airflow.

[0032] As shown in Figure 4 and Figure 5 , the heat pump tobacco curing house according to the embodiments of the present application is provided with a flow guide cover 27 at the air outlet 251, the flow guide cover 27 is in the shape of a horn with gradually increasing diameter along the direction of airflow outflow, and the flow guide cover 27 is arranged opposite to the tobacco placing rack 40.

[0033] In the above embodiments, the flow guide cover 27 can further expand the diffusion range of hot air, so that the hot air can cover the tobacco more uniformly. When the hot air enters the flow guide cover 27 through the air outlet 251, due to the horn-shaped structure of the flow guide cover 27, the flow rate of the hot air gradually decreases and the diffusion area gradually increases, thereby realizing more comprehensive and uniform heating of the tobacco.

[0034] As shown in Figure 4 , in some embodiments, the inner wall of the flow guide cover 27 is provided with a plurality of protruding flow guide strips 271, and the flow guide strips 271 are distributed in a spiral shape. The spiral-shaped flow guide strips 271 can further guide the flow direction of the hot air, so that the hot air forms a regular rotating airflow during diffusion. This rotating airflow can enhance the heat exchange efficiency between the hot air and the tobacco, and also helps to more uniformly distribute the hot air in the house body 10, further improving the uniformity of tobacco curing.

[0035] According to the heat pump tobacco curing house of the embodiments of the present application, the top of the house body 10 is provided with a return air duct, the air inlet of the return air duct is in communication with the inside of the house body 10, the air outlet 251 of the return air duct is in communication with the air inlet of the air outlet duct 25, and the air inlet of the return air duct is provided with a filter screen.

[0036] In detail, the return air duct functions to realize the recycling of hot air in the house body 10, part of the hot air in the house body 10 enters the return air duct through the air inlet of the return air duct, is filtered by the filter screen in the return air duct, and after removing dust and impurities, returns to the air inlet of the air outlet duct 25, mixes with newly generated hot air, and is then sent into the house body 10 again. This not only improves the energy utilization efficiency and reduces energy consumption, but also maintains the relative stability of the temperature in the house body 10.

[0037] According to the heat pump tobacco curing house of the embodiments of the present application, a temperature sensor, a humidity sensor and a controller are arranged in the house body 10, and the temperature sensor, the humidity sensor and the heat pump system are electrically connected to the controller.

[0038] Specifically, the temperature sensor and the humidity sensor monitor the temperature and humidity data in the housing 10 in real time and transmit this data to the controller. The controller precisely controls the heat pump system according to the preset temperature and humidity ranges. For example, when the temperature in the housing 10 is lower than the set value, the controller controls the compressor 21 to increase the operating frequency to increase the generation amount of hot air, thereby raising the temperature in the housing 10; when the humidity is higher than the set value, the controller can adjust the operating mode of the heat pump system to increase the dehumidification function and reduce the humidity in the housing 10. Through this automated temperature and humidity control method, a stable and suitable environmental condition can be provided for tobacco leaf baking.

[0039] In the heat pump tobacco baking house according to the embodiment of the present application, a heat insulation layer is provided on the inner wall of the housing 10. The function of the heat insulation layer is to reduce the heat dissipation in the housing 10 and improve the energy utilization efficiency. The heat insulation layer is made of materials with good heat insulation performance, such as polyurethane foam, rock wool, etc., which can effectively prevent the heat in the housing 10 from being transferred to the external environment, making the temperature in the housing 10 easier to remain stable, reducing energy waste, and lowering the operating cost.

[0040] As Figure 1 shown, in the heat pump tobacco baking house according to the embodiment of the present application, the tobacco leaf placement rack 40 includes a support frame and multiple layers of shelves 41 provided on the support frame. A baffle is provided around the circumference of the shelf 41, and a plurality of ventilation holes are provided at the bottom of the shelf 41. A sliding guide rail is provided on the support frame, and the shelf 41 is connected to the sliding guide rail so that at least part of the shelf 41 can be pulled out or pushed into the support frame. The baffle can prevent the tobacco leaves from slipping during placement and baking; the design of the ventilation holes is conducive to the circulation of hot air among the tobacco leaves, enabling the tobacco leaves to be fully heated; the setting of the sliding guide rail facilitates the operator to place and take out the tobacco leaves, reducing the labor intensity. When placing or taking out the tobacco leaves, the operator can pull the shelf 41 out of the support frame along the sliding guide rail, and then push the shelf 41 back to its original position after the operation is completed, improving the convenience and efficiency of the operation.

[0041] In some embodiments, a plurality of partition bars are provided on the shelf 41. The partition bars divide the shelf 41 into multiple areas, and sign card slots are provided on the partition bars. The function of the partition bars is to facilitate the classified placement and management of tobacco leaves of different grades, batches or varieties. During the actual baking process, different types of tobacco leaves may require different baking conditions. By dividing the shelf 41 into multiple areas by the partition bars, different types of tobacco leaves can be placed in different areas respectively, facilitating targeted baking control according to their respective characteristics and improving the refined management level of tobacco leaf baking.

[0042] In a specific embodiment, the operation process is as follows:

[0043] The tobacco leaves to be cured are classified according to grades, batches or varieties, and placed on the shelves 41 of the tobacco leaf placing frame 40 respectively, different types of tobacco leaves are separated by the partition, and the corresponding sign is placed in the corresponding sign card slot; the shelves 41 are pushed into the support frame along the sliding guide rail to start curing; the hot air heated by the heat pump system enters the house body 10 through the air outlet 251, is guided by the flow guide cover 27 and the air deflector 31, and flows uniformly around and inside the tobacco leaf placing frame 40, the hot air enters the tobacco leaf layer on the shelf 41 through the ventilation holes at the bottom of the shelf 41, fully contacts with the tobacco leaves, and transfers heat to the tobacco leaves to realize the curing of the tobacco leaves; during the curing process, the shelves 41 can be pulled out of the support frame through the sliding guide rail according to needs, the curing condition of the tobacco leaves is checked, and after the operation is completed, the shelves 41 are pushed back to the original position. Thus, the problems of uneven air flow, inaccurate temperature and humidity control, low energy utilization efficiency, and inconvenient tobacco leaf placing and management in the traditional tobacco curing house are effectively solved, and the curing quality and efficiency of the tobacco leaves are improved.

[0044] The specific embodiments of the utility model have been described in detail above, but it is only as an example, and the utility model is not limited to the specific embodiments described above. Any equivalent modification or replacement to the utility model made by those skilled in the art is also within the scope of the utility model, therefore, equivalent transformation, modification, improvement, etc. made without departing from the spirit and principle range of the utility model should be covered in the scope of the utility model.

Claims

1. A heat pump tobacco curing barn, characterized in that, The utility model provides a tobacco curing room, which comprises a room body, a heat pump system, an air flow adjusting device and a tobacco placing rack, the heat pump system comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger which are sequentially communicated to form a loop, the heat pump system further comprises an air outlet pipeline, the air outlet pipeline is provided with a first fan and the first heat exchanger which are oppositely arranged, the air outlet pipeline comprises a plurality of air outlets, the plurality of air outlets are communicated with the room body, the air flow adjusting device and the tobacco placing rack are arranged in the room body, the air flow adjusting device comprises a plurality of air deflectors and a driving mechanism, the plurality of air deflectors are rotatably arranged on the inner wall of the room body, and the driving mechanism is in transmission connection with the air deflectors to drive the air deflectors to rotate.

2. The heat pump tobacco curing barn of claim 1, wherein, The air deflectors are arranged on the side wall and the top wall of the room body, and the air deflectors are arranged around the periphery of each air outlet in a radial direction of the air outlet.

3. The heat pump tobacco curing barn of claim 2, wherein, The air deflectors are trapezoidal, the air deflectors comprise a large end and a small end, the large end is close to the tobacco placing rack, and the two opposite main surfaces of the air deflectors are arc-shaped.

4. The heat pump tobacco curing barn of claim 1, wherein, A flow guide cover is arranged at the air outlet, the flow guide cover is in the shape of a horn with gradually increasing diameter in the direction of air outflow, and the flow guide cover is oppositely arranged with the tobacco placing rack.

5. The heat pump tobacco curing barn of claim 4, wherein, An inner wall of the flow guide cover is provided with a plurality of protruding flow guide strips, and the flow guide strips are spirally distributed.

6. The heat pump tobacco curing barn of claim 1, wherein, A return air pipeline is arranged at the top of the room body, an air inlet of the return air pipeline is communicated with the inside of the room body, an air outlet of the return air pipeline is communicated with an air inlet of the air outlet pipeline, and a filter screen is arranged at the air inlet of the return air pipeline.

7. The heat pump tobacco curing barn of claim 1, wherein, A temperature sensor, a humidity sensor and a controller are arranged in the room body, and the temperature sensor, the humidity sensor and the heat pump system are electrically connected with the controller.

8. The heat pump tobacco curing barn of claim 1, wherein, An inner wall of the room body is provided with a heat preservation layer.

9. The heat pump tobacco curing barn of claim 1, wherein, The tobacco placing rack comprises a support frame and a plurality of layers of shelves arranged on the support frame, a circumferential periphery of each shelf is provided with a baffle, a bottom of each shelf is provided with a plurality of ventilation holes, a sliding guide rail is arranged on the support frame, and each shelf is connected with the sliding guide rail so that at least part of each shelf can be pulled out of or pushed into the support frame.

10. The heat pump tobacco curing barn of claim 9, wherein, A plurality of partition bars are arranged on each shelf, the partition bars divide each shelf into a plurality of areas, and an identification card slot is arranged on each partition bar.

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