Air source heat pump tobacco curing barn

Abstract

The utility model relates to an air source heat pump tobacco curing barn which comprises a heating chamber. A material support is arranged in the heating chamber, and an air outlet and an air return opening are formed in the upper side and the lower side of the heating chamber respectively. The air outlet is connected with the heat pump unit through a first air pipe; the return air inlet is connected with the heat pump unit through a second air pipe; a heating system and a condensation dehumidification system are arranged in the heat pump unit, and an auxiliary dehumidification device is arranged in the heating chamber; a heat recovery mechanism is arranged in the auxiliary dehumidification device; and the auxiliary dehumidification device is arranged between the air outlet and the air return port. The first box body is connected with the middle space of the heating chamber through a hot air pipeline; a negative pressure fan is arranged in the second box body, and under the action of the negative pressure fan, hot air in the middle space of the heating chamber firstly enters the first box body and exchanges heat with the first heat exchange pipe, so that heat exchange liquid in the first heat exchange pipe absorbs heat and is heated, and vaporized moisture in the hot air is condensed; and the return liquid phase drops downwards into the water storage tank.

Description

Technical Field

[0001] This utility model relates to a tobacco curing barn, specifically an air source heat pump tobacco curing barn, and belongs to the technical field of air source heat pump curing equipment. Background Technology

[0002] Air source heat pump technology is now widely used in tobacco curing barns. Given the large internal space and significant height difference within the heating chamber, the internal temperature distribution varies considerably. Typically, after high-temperature gas enters the heating chamber from the outlet, some of it cools and moves to lower positions, then re-enters the heat pump unit for dehumidification and heating for reuse. However, the gas in the central area of ​​the heating chamber carries a higher temperature and more heat. Directly condensing and dehumidifying this gas would waste a significant amount of heat, which could be recovered and recycled to reduce the heat pump unit's power consumption. Current technology clearly neglects the recovery and utilization of this gas in the central heating chamber, thus requiring further improvement. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an air source heat pump tobacco curing room that can reasonably recover heat energy, reduce the load of the heat pump unit, improve dehumidification capacity, and has a simple and reasonable structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An air-source heat pump tobacco curing barn includes a heating chamber; a material support is installed inside the heating chamber, and an air outlet and a return air inlet are respectively installed on the upper and lower sides of the heating chamber; the air outlet is connected to a heat pump unit through a first air duct; the return air inlet is connected to the heat pump unit through a second air duct; the heat pump unit is equipped with a heating system and a condensation dehumidification system, and an auxiliary dehumidification device is installed inside the heating chamber; the auxiliary dehumidification device is equipped with a heat recovery mechanism; the auxiliary dehumidification device is located between the air outlet and the return air inlet; the auxiliary dehumidification device is equipped with a drain outlet; the auxiliary dehumidification device is connected to the heating chamber through a hot air duct.

[0006] Furthermore, the heat recovery mechanism includes a first housing; a first heat exchange tube is disposed inside the first housing; the first heat exchange tube is connected to a heat exchange liquid circulation pipe; the heat exchange liquid circulation pipe is connected to a pump body; a cooling fan is disposed outside the heat exchange liquid circulation pipe; and the first housing is connected to a hot air duct.

[0007] Furthermore, the auxiliary dehumidification device also includes a second housing; the second housing is disposed on an adjacent side of the first housing; and the first housing is provided with an exhaust port.

[0008] Furthermore, the top of the second housing is provided with an air inlet; the exhaust port and the air inlet are connected by a dehumidification pipe; the dehumidification pipe is provided with several calcium chloride coating layers; the calcium chloride coating layers are provided on the inner wall of the dehumidification pipe.

[0009] Furthermore, a turbulence ring is provided between each of the calcium chloride coating layers; a turbulence plate is provided on the turbulence ring; and the turbulence plate is distributed along the axial direction of the dehumidification pipe.

[0010] Furthermore, a fan is provided at the air inlet; a water storage tank is provided at the bottom of the first housing; and the bottom of the second housing is connected to the second air duct.

[0011] This invention offers the following advantages: The first chamber is connected to the central space of the heating chamber via a hot air duct; a negative pressure fan is installed inside the second chamber. Under the action of the negative pressure fan, the hot airflow in the central space of the heating chamber first enters the first chamber and exchanges heat with the first heat exchange tube. This causes the heat exchange liquid in the first heat exchange tube to absorb heat and rise in temperature, while the vaporized water in the hot airflow condenses, returning to the liquid phase and dripping downwards into the water storage tank. Since the heat exchange liquid absorbs heat, it flows in the heat exchange liquid circulation pipe. To avoid wasting this heat, a heat storage plate is installed below the heat exchange liquid circulation pipe. Heat is transferred from the heat exchange liquid to the heat storage plate. With the action of the negative pressure fan, the airflow carries away the heat from the heat storage plate, and then the heat is dehumidified again through the dehumidification pipe before finally entering the second chamber and re-entering the heat pump unit through the second air duct. Through this method, heat recovery can be achieved while ensuring dehumidification capacity.

[0012] Meanwhile, the turbulence rings between the calcium chloride coating layers can reduce the airflow velocity and prolong the contact time between the airflow and the heat storage plate, resulting in a more efficient heat exchange effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of the first and second boxes.

[0015] Figure 3 This is a schematic diagram of the internal structure of a hot air duct.

[0016] Wherein: 1 is the heating chamber, 2 is the air outlet, 3 is the return air outlet, 4 is the first air duct, 5 is the heat pump unit, 6 is the second air duct, 7 is the hot air duct, 8 is the first housing, 9 is the first heat exchange tube, 10 is the heat exchange liquid circulation tube, 11 is the second housing, 12 is the heat storage plate, 13 is the dehumidification pipe, 14 is the calcium chloride coating layer, 15 is the turbulence ring, 16 is the turbulence plate, 17 is the fan, 18 is the water storage tank, and 19 is the circulating fan. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] The terms used herein, including technical and scientific terms, have the same meaning as those commonly understood by those skilled in the art, provided that they do not define the term differently. It should be understood that terms defined in commonly used dictionaries have meanings consistent with those in the prior art.

[0019] See Figures 1-3

[0020] An air-source heat pump tobacco curing barn includes a heating chamber 1; a material support is provided inside the heating chamber 1, and an air outlet 2 and a return air outlet 3 are respectively provided on the upper and lower sides of the heating chamber 1; the air outlet 2 is connected to a heat pump unit 5 through a first air duct 4; the return air outlet 3 is connected to the heat pump unit 5 through a second air duct 6; the heat pump unit 5 is equipped with a heating system and a condensation dehumidification system, and an auxiliary dehumidification device is provided inside the heating chamber 1; the auxiliary dehumidification device is equipped with a heat recovery mechanism; the auxiliary dehumidification device is located between the air outlet 2 and the return air outlet 3; the auxiliary dehumidification device is equipped with a drain outlet; the auxiliary dehumidification device is connected to the heating chamber 1 through a hot air duct 7.

[0021] Furthermore, the heat recovery mechanism includes a first housing 8; a first heat exchange tube 9 is provided inside the first housing 8; the first heat exchange tube 9 is connected to a heat exchange liquid circulation pipe 10; the heat exchange liquid circulation pipe 10 is connected to a pump body; a cooling fan is provided outside the heat exchange liquid circulation pipe 10; and the first housing 8 is connected to a hot air pipe 7.

[0022] Furthermore, the auxiliary dehumidification device also includes a second housing 11; the second housing 11 is located on an adjacent side of the first housing 8; the first housing 8 is provided with an exhaust port; the heat exchange fluid circulation pipe 10 is connected to a plurality of heat storage plates 12; each heat storage plate 12 is inserted into the dehumidification pipe 13.

[0023] Furthermore, the top of the second housing 11 is provided with an air inlet; the exhaust port and the air inlet are connected through a dehumidification pipe 13; a plurality of calcium chloride coating layers 14 are provided inside the dehumidification pipe 13; the calcium chloride coating layers 14 are provided on the inner wall of the dehumidification pipe 13; the heat storage plate 12 is located in front of the calcium chloride coating layers 14.

[0024] Furthermore, a turbulence ring 15 is provided between each of the calcium chloride coating layers 14; a turbulence plate 16 is provided on the turbulence ring 15; and the turbulence plate 16 is distributed along the axial direction of the dehumidification pipe 13.

[0025] Furthermore, a fan 17 is provided at the air inlet; a water storage tank 18 is provided at the bottom of the first housing 8; and the bottom of the second housing 11 is connected to the second air duct 6.

[0026] Working principle: Under the action of negative pressure fan 17 and circulating fan 19, the airflow in the middle of heating chamber 1 will enter the first housing 8 and come into contact with the first heat exchange tube 9, transferring heat to the heat exchange liquid in the first heat exchange tube 9. The gas itself will condense, and the vaporous liquid will fall into the water storage tank 18. The low-temperature gas will enter the hot air duct 7 under the action of negative pressure fan 17 and circulating fan 19. At this time, since the heat exchange liquid carries heat, it transfers heat to the heat storage plate 12 during its flow in the heat exchange liquid circulation pipe 10. When the gas passes through the dehumidification pipe 13, it will come into contact with the heat storage plate 12 and absorb its heat. After absorbing heat, the airflow will undergo secondary drying through the calcium chloride coating layer 14 (the first time is condensation), and the baffle 16 will reduce the movement speed of the airflow, allowing it to make more sufficient contact with the heat storage plate 12. Finally, the hot air enters the second housing 11, and under the action of the circulating fan 19, it enters the second air duct 6 through the second air duct 6 and finally returns to the heat pump unit.

[0027] Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An air-source heat pump tobacco curing barn, comprising a heating chamber; a material support is provided inside the heating chamber, and an air outlet and a return air outlet are respectively provided on the upper and lower sides of the heating chamber; the air outlet is connected to a heat pump unit through a first air duct; the return air outlet is connected to the heat pump unit through a second air duct; the heat pump unit is provided with a heating system and a condensation dehumidification system, characterized in that: The heating chamber is equipped with an auxiliary dehumidification device; the auxiliary dehumidification device is equipped with a heat recovery mechanism; the auxiliary dehumidification device is located between the air outlet and the air return outlet; the auxiliary dehumidification device is equipped with a drain outlet; the auxiliary dehumidification device is connected to the heating chamber through a hot air duct.

2. The air-source heat pump tobacco curing barn according to claim 1, characterized in that: The heat recovery mechanism includes a first housing; a first heat exchange tube is installed inside the first housing; the first heat exchange tube is connected to a heat exchange liquid circulation pipe; the heat exchange liquid circulation pipe is connected to a pump body; a cooling fan is installed outside the heat exchange liquid circulation pipe; and the first housing is connected to a hot air duct.

3. The air-source heat pump tobacco curing barn according to claim 2, characterized in that: The auxiliary dehumidification device also includes a second housing; the second housing is located on an adjacent side of the first housing; the first housing is provided with an exhaust port; the heat exchange fluid circulation pipe is connected to a number of heat storage plates; each heat storage plate is inserted into the dehumidification pipe.

4. The air-source heat pump tobacco curing barn according to claim 3, characterized in that: The top of the second housing is provided with an air inlet; the exhaust port and the air inlet are connected by a dehumidification pipe; the dehumidification pipe is provided with several calcium chloride coating layers; the calcium chloride coating layers are provided on the inner wall of the dehumidification pipe; the heat storage plate is located in front of the calcium chloride coating layers.

5. The air-source heat pump tobacco curing barn according to claim 4, characterized in that: A turbulence ring is provided between each of the aforementioned calcium chloride coating layers; a turbulence plate is provided on the turbulence ring; the turbulence plate is distributed radially along the dehumidification pipe.

6. The air-source heat pump tobacco curing barn according to claim 5, characterized in that: A fan is installed at the air inlet; a water tank is installed at the bottom of the first housing; and the bottom of the second housing is connected to the second air duct.

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