Air heating and humidifying device for tobacco leaf moisture regaining

Abstract

The utility model discloses an air heating and humidifying device for tobacco leaf moisture regaining, which comprises a heating and humidifying module and a hot water module, the heating and humidifying module comprises a heating and humidifying air duct, a wet film humidifier, a first heating heat exchanger, a second heating heat exchanger and a fan; the hot water module comprises a hot water circulation assembly and a heating assembly, the hot water circulation assembly comprises a heat storage water tank and a hot water circulation pump which are sequentially connected through a pipeline, and the first heating heat exchanger and the second heating heat exchanger are connected between the heat storage water tank and the hot water circulation pump in parallel. A first heating adjusting valve and a second heating adjusting valve are installed at outlets of the first heating heat exchanger and the second heating heat exchanger correspondingly, and the heating assembly is used for heating water in the heat storage water tank. According to the utility model, the operation under the set working condition is ensured, the generation of condensate water is reduced, the temperature and humidity of hot air can be accurately controlled, and the energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of air heating and humidification, and in particular to an air heating and humidification device for tobacco leaf rehumidification. Background Technology

[0002] In the tobacco production process, a rehumidification process is required to heat and humidify the tobacco leaves. Currently, this is generally done by heating and humidifying the air with heating and humidifying equipment, and then using this heated and humidified air to rehumidify the tobacco leaves. Traditional heating and humidifying equipment typically uses a heater to heat the air and then a humidifier to humidify it. In actual operation, condensation is produced, which can easily lead to a "white powder" phenomenon, scale buildup and corrosion on the fan and duct, and it is difficult to accurately control the temperature and humidity of the hot air. In addition, the heating and humidification of the hot air is inefficient and energy-intensive. Utility Model Content

[0003] The purpose of this invention is to provide an air heating and humidification device for tobacco leaf rehumidification, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] This utility model provides an air heating and humidification device for tobacco leaf rehumidification, comprising:

[0006] The heating and humidifying module includes a heating and humidifying air duct, a wet film humidifier, a first heating heat exchanger, a second heating heat exchanger, and a fan. The first heating heat exchanger, the wet film humidifier, and the second heating heat exchanger are arranged sequentially and at intervals along the air flow direction in the heating and humidifying air duct, and the fan is installed in the heating and humidifying air duct.

[0007] A hot water module includes a hot water circulation component and a heating component. The hot water circulation component includes a hot water storage tank and a hot water circulation pump connected in sequence by pipes. A first heating heat exchanger and a second heating heat exchanger are connected in parallel between the hot water storage tank and the hot water circulation pump. A first heating regulating valve and a second heating regulating valve are respectively installed at the outlets of the first heating heat exchanger and the second heating heat exchanger. The heating component is used to heat the water in the hot water storage tank.

[0008] The beneficial effects of this air heating and humidification device are:

[0009] In operation, the water in the hot water storage tank is heated by a heating element. Then, a hot water circulation pump draws the hot water from the tank to the first and second heat exchangers, where it exchanges heat with the air to heat it. Simultaneously, under the operation of a fan, the air passes sequentially through the first heat exchanger, the wet film humidifier, and the second heat exchanger within the heating and humidification duct. First, the first heat exchanger heats the air to be humidified to the set temperature, creating high-temperature hot air. Then, the heated air passes through the wet film humidifier, where the heat vaporizes water molecules to form water vapor, which mixes with the hot air, achieving rapid heating of the air. The system humidifies the air to a set humidity level to create humid air. This humidified air then passes through a second heat exchanger, which heats it to a set temperature, creating humidified and heated hot air. This improves the efficiency of heating and humidifying the hot air. During operation, the flow of hot water through the first and second heat exchangers is regulated by a first and a second heating regulating valve, respectively, to adjust the amount of heat exchanged with the air and thus the air heating temperature. This ensures the device operates under set conditions, reduces condensate production, and accurately controls the temperature and humidity of the hot air. Industrial waste heat sources can be used for heating in this system, reducing energy consumption.

[0010] The hot water storage tank is used to store water, which can prevent the hot water circulation component from shutting down and alarming due to water imbalance. At the same time, it buffers the changes in water volume and water pressure in the pipeline, which can cause the hot water circulation component to malfunction.

[0011] As a further improvement to the above technical solution, the heating assembly also includes a heat pump unit and a heating circulation pump connected in series with the hot water storage tank via a pipeline.

[0012] As a further improvement to the above technical solution, the heating assembly also includes a water heater disposed in the hot water storage tank.

[0013] As a further improvement to the above technical solution, the hot water circulation assembly also includes a high-level expansion tank connected in the pipe of the hot water circulation assembly, and the high-level expansion tank is provided with a water supply pipe, a drain pipe, an exhaust pipe and an overflow pipe.

[0014] As a further improvement to the above technical solution, the hot water circulation assembly also includes a circulation valve group, which is connected in series between the hot water storage tank and the hot water circulation pump.

[0015] As a further improvement to the above technical solution, one end of the heating and humidifying air duct is provided with an air inlet and a return air hole, and the other end is provided with an air outlet. The air inlet is provided with an air inlet regulating valve, the return air hole is provided with a return air regulating valve, and the air outlet is provided with an air outlet regulating valve.

[0016] As a further improvement to the above technical solution, the return air hole is connected to a return air pipe, and the return air pipe is provided with multiple return air interfaces equipped with return air valves.

[0017] The air outlet is connected to an air supply pipe, and the air supply pipe is provided with multiple air supply interfaces equipped with air supply valves.

[0018] As a further improvement to the above technical solution, the heating and humidifying module also includes a first auxiliary electric heater located upstream of the wet film humidifier and a second auxiliary electric heater located downstream of the wet film humidifier.

[0019] As a further improvement to the above technical solution, the heating and humidifying module also includes an air filter installed in the heating and humidifying air duct, the air filter being located upstream of the first heating heat exchanger.

[0020] As a further improvement to the above technical solution, the sidewall of the heating and humidifying air duct is provided with multiple inspection doors at intervals along the airflow direction.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a schematic diagram of an embodiment of the air heating and humidifying device provided by this utility model;

[0024] Figure 2 This is a schematic diagram of an embodiment of the heating and humidifying module provided by this utility model;

[0025] Figure 3 This is a schematic diagram of an embodiment of the heating assembly provided by this utility model;

[0026] Icon labels:

[0027] Heating and humidifying module 100; heating and humidifying air duct 110; air inlet 111; air outlet 112; return air vent 113; air inlet regulating valve 114; return air regulating valve 115; air outlet regulating valve 116; return air pipe 117; return air valve 1171; return air interface 1172; air supply pipe 118; air supply valve 1181; air supply interface 1182; inspection door 119; wet film humidifier 120; first heating heat exchanger 130; first heating regulating valve 131; second heating heat exchanger 140; second heating regulating valve 141; fan 150; first auxiliary electric heater 160; second auxiliary electric heater 170; air filter 180.

[0028] Hot water module 200; hot water circulation assembly 210; hot water storage tank 211; hot water circulation pump 212; high-level expansion tank 213; water supply pipe 214; drain pipe 215; vent pipe 216; overflow pipe 217; circulation valve assembly 218; heating assembly 220; heat pump unit 221; heating circulation pump 222; water and electricity heater 223. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0034] Traditional heating and humidifying equipment typically heats the air with a heater and then humidifies it with a humidifier. In actual operation, this often results in condensation, leading to a "white powder" phenomenon, scaling and corrosion of the fan and ductwork, difficulty in accurately controlling the temperature and humidity of the hot air, low heating and humidification efficiency, and high energy consumption. Therefore, this invention proposes an air heating and humidifying device for tobacco leaf rehumidification.

[0035] like Figure 1As shown, the air heating and humidification device of this utility model includes a heating and humidification module 100 and a hot water module 200.

[0036] like Figure 2 As shown, the heating and humidifying module 100 of this embodiment includes a heating and humidifying air duct 110, a wet film humidifier 120, a first heating heat exchanger 130, a second heating heat exchanger 140, and a fan 150. The heating and humidifying air duct 110 is installed in a cabinet. The two ends of the heating and humidifying air duct 110 are respectively provided with an air inlet 111 and an air outlet 112. The air inlet 111 is used for the intake of fresh air, and the air outlet 112 is used for the exhaust of hot air. The first heating heat exchanger 130, the wet film humidifier 120, and the second heating heat exchanger 140 are arranged sequentially and at intervals along the air flow direction in the heating and humidifying air duct 110. It can be understood that the first heating heat exchanger 130 is located upstream of the wet film humidifier 120, while the second heating heat exchanger 140 is located downstream of the wet film humidifier 120.

[0037] In this embodiment, the fan 150 is installed inside the heating and humidifying air duct 110. Specifically, in this embodiment, the fan 150 is located in the cabinet and downstream of the second heating heat exchanger 140. The fan 150 provides power for the airflow. In some other embodiments, the fan 150 may be installed upstream of the first heating heat exchanger 130.

[0038] With the fan 150 running, the air passes through the first heating heat exchanger 130, the wet film humidifier 120, and the second heating heat exchanger 140 in sequence within the heating and humidifying air duct 110.

[0039] like Figure 3 As shown, the hot water module 200 of this embodiment includes a hot water circulation component 210 and a heating component 220. The hot water circulation component 210 includes a hot water storage tank 211 and a hot water circulation pump 212 connected in sequence by pipes. A first heating heat exchanger 130 and a second heating heat exchanger 140 are connected in parallel between the hot water storage tank 211 and the hot water circulation pump 212. It can be understood that the hot water storage tank 211 and the hot water circulation pump 212 are connected in series on the inlet side and outlet side of the first heating heat exchanger 130 and the second heating heat exchanger 140.

[0040] The heating component 220 is used to heat the water in the hot water storage tank 211. The hot water in the hot water storage tank 211 is pumped to the first heating heat exchanger 130 and the second heating heat exchanger 140 by the hot water circulation pump 212 to exchange heat with the air and heat the air.

[0041] The hot water storage tank 211 is used to store water, which can prevent the hot water circulation component 210 from shutting down and alarming due to water imbalance. At the same time, it buffers the changes in water volume and water pressure in the pipeline, which may cause the hot water circulation component 210 to malfunction.

[0042] The outlets of the first heat exchanger 130 and the second heat exchanger 140 are respectively equipped with a first heating regulating valve 131 and a second heating regulating valve 141. During operation, the first heating regulating valve 131 and the second heating regulating valve 141 are used to regulate the amount of hot water flowing through the first heat exchanger 130 and the second heat exchanger 140, respectively, so as to regulate the heat exchange with the air and adjust the temperature of the air, so that the device can ensure that it operates under the set conditions, reduce the generation of condensate, and accurately control the temperature and humidity of the hot air.

[0043] With the fan 150 running, air passes sequentially through the first heat exchanger 130, the wet film humidifier 120, and the second heat exchanger 140 within the heated and humidified air duct 110. First, the air to be humidified is heated to the set temperature by the first heat exchanger 130, forming high-temperature hot air. Then, the heated air passes through the wet film humidifier 120, where the heat vaporizes water molecules to form water vapor, which mixes with the hot air, achieving rapid humidification of the air. The system humidifies the air to a set humidity level to form humid air. The humidified air then passes through a second heat exchanger 140, which heats the air to a set temperature to form humidified and heated hot air. This improves the efficiency of heating and humidifying the hot air. The present invention can ensure operation under set conditions, reduce the generation of condensate, and accurately control the temperature and humidity of the hot air. At this time, the heating component 220 can use industrial waste heat source for heating, reducing energy consumption.

[0044] Furthermore, the heating component 220 in this embodiment includes a heat pump unit 221 and a heating circulation pump 222 connected in series with the hot water storage tank 211 via a pipe. In this embodiment, the heating circulation pump 222 drives the water to circulate between the hot water storage tank 211 and the heat pump unit 221, and the heat pump unit 221 circulates and heats the water in the hot water storage tank 211 to maintain the water in the hot water storage tank 211 at a set high temperature.

[0045] The heating component 220 in this embodiment also includes a water heater 223 disposed in the hot water storage tank 211, which is used to precisely control the water temperature in the hot water storage tank 211.

[0046] In some other embodiments, the heating component 220 may also be extended to solar + heat pump / electric heating, or steam, etc.

[0047] Furthermore, the hot water circulation assembly 210 of this embodiment also includes a high-level expansion tank 213 connected in a pipe of the hot water circulation assembly 210. The high-level expansion tank 213 is used to buffer water pressure fluctuations in the hot water circulation assembly 210. The high-level expansion tank 213 is provided with a water supply pipe 214, a drain pipe 215, an exhaust pipe 216, and an overflow pipe 217. Water is supplied through the water supply pipe 214, while the drain pipe 215 is used to discharge water. In use, the high-level expansion tank 213 is connected to the inlet or outlet of the hot water circulation pump 212, and the hot water circulation pump 212 draws water out of the pipe for flushing. The exhaust pipe 216 is used to relieve pressure, and the overflow pipe 217 is used to maintain the water level of the high-level expansion tank 213 at a set position.

[0048] The hot water circulation assembly 210 in this embodiment also includes a circulation valve group 218, which is connected in series between the hot water storage tank 211 and the hot water circulation pump 212. It can be understood that the circulation valve group 218 is connected in parallel with the first heating heat exchanger 130 and the second heating heat exchanger 140 respectively. When the hot water circulation pump 212 is running at its minimum power and the water volume is still relatively large, the circulation valve group 218 can be opened to keep the hot water circulation pump 212 running at its rated power, while also satisfying the heating of air by the first heating heat exchanger 130 and the second heating heat exchanger 140 under low operating conditions.

[0049] In this embodiment, the heating and humidifying air duct 110 is provided with a return air hole 113 at one end. The return air hole 113 and the air inlet 111 are located at the same end to realize return air. The air inlet 111 is provided with an air inlet regulating valve 114, the return air hole 113 is provided with a return air regulating valve 115, and the air outlet 112 is provided with an air outlet regulating valve 116. The fresh air volume, return air volume, and air outlet volume are adjusted by controlling the air inlet regulating valve 114, the return air regulating valve 115, and the air outlet regulating valve 116.

[0050] In this embodiment, the return air vent 113 is connected to the return air duct 117. The return air duct 117 is provided with multiple return air inlets 1172 with return air valves 1171. The multiple return air inlets 1172 can communicate with multiple area spaces. The air outlet 112 is connected to the air supply duct 118. The air supply duct 118 is provided with multiple air supply inlets 1182 with air supply valves 1181. The air supply inlets 1182 can communicate with multiple area spaces.

[0051] The heating and humidifying module 100 in this embodiment also includes a first auxiliary electric heater 160 located upstream of the wet film humidifier 120 and a second auxiliary electric heater 170 located downstream of the wet film humidifier 120.

[0052] Depending on the operating mode, the first heating heat exchanger 130 and the first auxiliary electric heater 160 can work independently or simultaneously. When working simultaneously, the first heating heat exchanger 130 first heats the air, and the first auxiliary electric heater 160 further heats the air to the set temperature according to the humidification temperature requirement. In other cases, such as when the external heat source fails, the first heating heat exchanger 130 does not work, and the first auxiliary electric heater 160 alone provides heating. The second heating heat exchanger 140 and the second auxiliary electric heater 170 can also work independently or simultaneously.

[0053] The heating and humidifying module 100 in this embodiment also includes an air filter 180 installed in the heating and humidifying air duct 110. The air filter 180 is located upstream of the first heating heat exchanger 130. The air filter 180 includes a primary plate filter and a medium-efficiency bag filter arranged in sequence to achieve air filtration and purification.

[0054] To facilitate maintenance, the side wall of the heating and humidifying air duct 110 in this embodiment is provided with multiple inspection doors 119 at intervals along the air flow direction. The corresponding inspection door 119 is opened according to the maintenance of different sections.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An air heating and humidifying device for tobacco leaf conditioning, characterized in that, include: The heating and humidifying module includes a heating and humidifying air duct, a wet film humidifier, a first heating heat exchanger, a second heating heat exchanger, and a fan. The first heating heat exchanger, the wet film humidifier, and the second heating heat exchanger are arranged sequentially and at intervals along the air flow direction in the heating and humidifying air duct, and the fan is installed in the heating and humidifying air duct. A hot water module includes a hot water circulation component and a heating component. The hot water circulation component includes a hot water storage tank and a hot water circulation pump connected in sequence by pipes. A first heating heat exchanger and a second heating heat exchanger are connected in parallel between the hot water storage tank and the hot water circulation pump. A first heating regulating valve and a second heating regulating valve are respectively installed at the outlets of the first heating heat exchanger and the second heating heat exchanger. The heating component is used to heat the water in the hot water storage tank.

2. The air heating and humidifying device according to claim 1, characterized in that: The heating assembly also includes a heat pump unit and a heating circulation pump connected in series with the hot water storage tank via pipes.

3. The air heating and humidifying device according to claim 2, characterized in that: The heating assembly also includes a water heater installed inside the hot water storage tank.

4. The air heating and humidifying device according to claim 1, characterized in that: The hot water circulation assembly also includes a high-level expansion tank connected in the pipes of the hot water circulation assembly. The high-level expansion tank is equipped with a water supply pipe, a drain pipe, an exhaust pipe, and an overflow pipe.

5. The air heating and humidifying device according to claim 1, characterized in that: The hot water circulation assembly also includes a circulation valve group, which is connected in series between the hot water storage tank and the hot water circulation pump.

6. The air heating and humidifying device according to claim 1, characterized in that: One end of the heating and humidifying air duct is provided with an air inlet and a return air hole, and the other end is provided with an air outlet. The air inlet is provided with an air inlet regulating valve, the return air hole is provided with a return air regulating valve, and the air outlet is provided with an air outlet regulating valve.

7. The air heating and humidifying device according to claim 6, characterized in that: The return air hole is connected to a return air pipe, and the return air pipe is provided with multiple return air ports equipped with return air valves. The air outlet is connected to an air supply pipe, and the air supply pipe is provided with multiple air supply interfaces equipped with air supply valves.

8. The air heating and humidifying device according to claim 1, characterized in that: The heating and humidifying module also includes a first auxiliary electric heater located upstream of the wet film humidifier and a second auxiliary electric heater located downstream of the wet film humidifier.

9. The air heating and humidifying device according to claim 1, characterized in that: The heating and humidifying module also includes an air filter installed in the heating and humidifying air duct, and the air filter is located upstream of the first heating heat exchanger.

10. The air heating and humidifying device according to claim 1, characterized in that: The sidewall of the heating and humidifying air duct is provided with multiple inspection doors spaced apart along the airflow direction.

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