Tobacco baking machine with novel dehumidification heat recovery system

Abstract

The utility model discloses a tobacco baking machine with a novel dehumidification heat recovery system, which comprises an outer machine, an inner machine and a baking room, the outer machine is provided with a fresh air port, the inner machine is provided with an air return port communicated with the baking room, the fresh air port is connected with a heat exchange cavity of a heat exchanger, and the air return port is communicated with the heat exchange cavity of the heat exchanger. The air inlet end of the exhaust fan communicates with the air return opening through the other heat exchange cavity channel of the heat exchanger. A first evaporator is arranged at the fresh air opening; a second evaporator used for conducting heat exchange and dehumidification on gas exhausted by the exhaust fan is arranged in the outdoor unit. The first evaporator is arranged at the fresh air port and used for dehumidifying fresh air entering the curing barn, the second evaporator used for conducting heat exchange and dehumidification on air exhausted by the exhaust fan is arranged in the outer machine and used for conducting heat exchange and dehumidification on the exhausted second evaporator, and secondary heat utilization is conducted. And the heat recovery rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to tobacco baking machines, in particular to a tobacco baking machine with a novel dehumidification heat recovery system. Background Art

[0002] At present, in order to achieve better energy-saving effects, tobacco drying machines on the market generally add a heat recovery device to the semi-open heat pump drying system to recover the energy in the exhausted hot and humid air and improve the thermal utilization efficiency of the system. The existing drying machines on the market can improve the thermal utilization rate of the system, but the thermal utilization efficiency is low. Utility Model Content

[0003] In order to solve the defects of the prior art that the basket is large in size, occupies a large space when not in use, and is inconvenient to store the basket, the utility model provides a tobacco baking machine with a novel dehumidification heat recovery system.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a tobacco baking machine with a novel dehumidification heat recovery system, comprising an external machine, an internal machine and a baking room, the external machine is provided with a fresh air inlet, the internal machine is provided with a return air inlet connected to the baking room, the external machine is provided with an exhaust fan, and the baking room is provided with a temperature and humidity sensor for detecting the temperature and humidity in the baking room; the internal machine is provided with an air supply inlet connected to the baking room, and the internal machine is provided with an electric heater for heating the fresh air; the internal machine is also provided with a blower for delivering the fresh air into the baking room; the internal machine is provided with a heat exchanger, the fresh air inlet is connected to a heat exchange cavity of the heat exchanger, and the air inlet end of the exhaust fan is connected to the return air inlet via another heat exchange cavity of the heat exchanger; a first evaporator is provided at the fresh air inlet; the external machine is provided with a second evaporator for performing heat exchange and dehumidification on the gas discharged by the exhaust fan.

[0006] As a preferred technical solution of the present utility model, a fresh air valve is provided at the fresh air outlet.

[0007] As a preferred technical solution of the utility model, the return air outlet is connected to a return air valve which is placed inside the indoor unit and has an adjustable opening.

[0008] As a preferred technical solution of the utility model, when the temperature and humidity sensor detects that the humidity in the baking room is higher than the target value, the exhaust fan is turned on for continuous exhaust.

[0009] As a preferred technical solution of the utility model, the heat exchanger includes a heat exchange shell having a heat exchange cavity, and main connecting pipes are provided at the upper and lower ends of the heat exchange shell, a plurality of spirally arranged heat exchange tubes placed in the heat exchange cavity are provided between the two main connecting pipes, and the heat exchange shell is provided with a butt pipe.

[0010] The beneficial effects of the utility model are:

[0011] This tobacco baking machine with a novel dehumidification heat recovery system passes the high-temperature and high-humidity gas that needs to be discharged into the heat exchanger, and exchanges heat with the fresh air to increase the initial temperature of the fresh air, thereby reducing the energy consumption of the electric heater when heating the fresh air, thereby achieving the effect of energy saving and emission reduction. A first evaporator is provided at the fresh air inlet, and the first evaporator is used to dehumidify the fresh air entering the baking room, while a second evaporator for heat exchange and dehumidification of the gas discharged by the exhaust fan is provided in the external unit, and the second evaporator is used to exchange heat and dehumidify the discharged gas, and perform secondary heat utilization, thereby improving the heat recovery rate, thereby avoiding the exhaust gas from being too humid and being sucked into the fresh air inlet, which will increase the humidity of the fresh air and cause the first evaporator to be overloaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of a tobacco baking machine with a novel dehumidification heat recovery system of the utility model;

[0014] Figure 2 The utility model is a schematic diagram of the structure of a heat exchanger of a tobacco baking machine with a novel dehumidification heat recovery system.

[0015] In the figure: 1. outdoor unit; 2. indoor unit; 3. baking room; 4. fresh air inlet; 5. exhaust fan; 6. temperature and humidity sensor; 7. air supply outlet; 8. electric heater; 9. blower; 10. heat exchanger; 11. return air inlet; 12. first evaporator; 13. second evaporator; 14. fresh air valve; 15. return air valve; 16. heat exchange shell; 17. main connecting pipe; 18. heat exchange pipe; 19. butt pipe. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] Example: Figure 1 and Figure 2As shown, the utility model is a tobacco baking machine with a novel dehumidification heat recovery system, comprising an external machine 1, an internal machine 2 and a baking room 3, wherein the external machine 1 is provided with a fresh air inlet 4, and the internal machine 2 is provided with an air return inlet 11 connected to the baking room 3, and the external machine 1 is provided with an exhaust fan 5, and the baking room 3 is provided with a temperature and humidity sensor 6 for detecting the temperature and humidity in the baking room 3; and the internal machine 2 is provided with an air supply inlet 7 connected to the baking room 3, and the internal machine 2 is provided with a fresh air inlet An electric heater 8 for heating; the indoor unit 2 is also provided with a blower 9 for delivering fresh air into the baking room 3; the indoor unit 2 is provided with a heat exchanger 10, the fresh air outlet 4 is connected to a heat exchange cavity of the heat exchanger 10, and the air inlet end of the exhaust fan 5 is connected to the return air outlet 11 through another heat exchange cavity of the heat exchanger 10; a first evaporator 12 is provided at the fresh air outlet 4; the outdoor unit 1 is provided with a second evaporator 13 for heat exchange and dehumidification of the gas discharged by the exhaust fan 5. The high-temperature and high-humidity gas that needs to be discharged is introduced into the heat exchanger 10, and the fresh air is heat exchanged to increase the initial temperature of the fresh air, thereby reducing the energy consumption of the electric heater 8 when heating the fresh air, thereby achieving the effect of energy saving and emission reduction. A first evaporator 12 is provided at the fresh air inlet 4, and the first evaporator 12 is used to dehumidify the fresh air entering the baking room 3, and a second evaporator 13 for heat exchange and dehumidification of the gas discharged by the exhaust fan 5 is provided in the external unit 1, and the second evaporator 13 is used to heat exchange and dehumidify the discharged gas, and secondary heat utilization is performed to improve the heat recovery rate, thereby avoiding the exhaust gas from being too humid and being sucked into the fresh air inlet 4, which will increase the humidity of the fresh air and cause the first evaporator 12 to be overloaded.

[0018] Wherein, a fresh air valve 14 is provided at the fresh air inlet 4 to facilitate control of the air intake volume.

[0019] The return air port 11 is connected to a return air valve 15 which is placed inside the indoor unit 2 and has an adjustable opening, so as to facilitate control of the return air volume.

[0020] When the temperature and humidity sensor 6 detects that the humidity in the baking room 3 is higher than the target value, the exhaust fan 5 is turned on for continuous exhaust.

[0021] Among them, the heat exchanger 10 includes a heat exchange shell 16 with a heat exchange cavity, and main connecting pipes 17 are provided at the upper and lower ends of the heat exchange shell 16, and a plurality of spirally arranged heat exchange tubes 18 placed in the heat exchange cavity are provided between the two main connecting pipes 17, and the heat exchange shell 16 is provided with a butt joint pipe 19, so that the main connecting pipe 17 is connected to the return air port 11 and the exhaust fan, and the butt joint pipe is connected to the fresh air port. The spirally arranged heat exchange tube has a larger heat exchange area, thereby having a better heat exchange effect.

[0022] When working, this tobacco baking machine with a novel dehumidification heat recovery system will pass the high-temperature and high-humidity gas that needs to be discharged into the heat exchanger 10, and use it to exchange heat with the fresh air to increase the initial temperature of the fresh air, thereby reducing the energy consumption of the electric heater 8 when heating the fresh air, thereby playing a role in energy saving and emission reduction. A first evaporator 12 is provided at the fresh air inlet 4, and the first evaporator 12 is used to dehumidify the fresh air entering the baking room 3, and a second evaporator 13 for heat exchange and dehumidification of the gas discharged by the exhaust fan 5 is provided in the external unit 1, and the second evaporator 13 is used to exchange heat and dehumidify the discharged gas, and perform secondary heat utilization, thereby improving the heat recovery rate, thereby avoiding the exhaust gas from being too humid and being sucked into the fresh air inlet 4, which will increase the humidity of the fresh air and cause the first evaporator 12 to be overloaded.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tobacco baking machine with a novel dehumidification heat recovery system, characterized in that: The invention comprises an external unit (1), an internal unit (2) and a baking room (3), wherein the external unit (1) is provided with a fresh air inlet (4), and the internal unit (2) is provided with a return air inlet (11) connected to the baking room (3), and the external unit (1) is provided with an exhaust fan (5), and the baking room (3) is provided with a temperature and humidity sensor (6) for detecting the temperature and humidity in the baking room (3); and the internal unit (2) is provided with an air supply inlet (7) connected to the baking room (3), and the internal unit (2) is provided with an electric heater (8) for heating the fresh air; The internal unit (2) is also provided with a blower (9) for delivering fresh air into the baking room (3); the internal unit (2) is provided with a heat exchanger (10), the fresh air inlet (4) is connected to a heat exchange cavity of the heat exchanger (10), and the air inlet end of the exhaust fan (5) is connected to the return air inlet (11) via another heat exchange cavity of the heat exchanger (10); a first evaporator (12) is provided at the fresh air inlet (4); and the external unit (1) is provided with a second evaporator (13) for performing heat exchange and dehumidification on the gas discharged by the exhaust fan (5).

2. A tobacco baking machine with a novel dehumidification heat recovery system according to claim 1, characterized in that: A fresh air valve (14) is provided at the fresh air inlet (4).

3. The tobacco baking machine with a novel dehumidification heat recovery system according to claim 1, characterized in that: The return air port (11) is connected to a return air valve (15) which is arranged inside the indoor unit (2) and has an adjustable opening.

4. The tobacco baking machine with a novel dehumidification heat recovery system according to claim 2, characterized in that: When the temperature and humidity sensor (6) detects that the humidity in the baking room (3) is higher than the target value, the exhaust fan (5) is turned on to continuously exhaust air.

5. The tobacco baking machine with a novel dehumidification heat recovery system according to claim 1, characterized in that: The heat exchanger (10) comprises a heat exchange shell (16) having a heat exchange cavity, and main connecting pipes (17) are provided at both upper and lower ends of the heat exchange shell (16), a plurality of spirally arranged heat exchange pipes (18) arranged in the heat exchange cavity are provided between the two main connecting pipes (17), and the heat exchange shell (16) is provided with a butt joint pipe (19).

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