Air source heat pump curing barn capable of recycling waste heat

Abstract

The utility model discloses an air source heat pump curing barn capable of recovering waste heat, which comprises an air source heat pump and a curing barn body, and the air source heat pump comprises a shell, an evaporator, a compressor, a condenser and an evaporation fan; the shell is provided with a first cavity, a second cavity, a fresh air channel, a moisture removal channel, an air inlet, an air outlet, an air return opening, an air supply opening, a fresh air opening and a moisture removal opening. The fresh air channel communicates with the outside of the curing barn body through a fresh air opening and communicates with the second cavity through a fresh air valve. The moisture removal channel communicates with the interior of the curing barn body through the moisture removal opening and communicates with the first cavity through the moisture removal air valve; the evaporator and the compressor are both arranged in the first cavity, the evaporator is vertically arranged right opposite to the exhaust outlet, and the condenser is obliquely arranged in the second cavity and separates the air supply outlet from the air return inlet; the evaporation fan is arranged at the air outlet; and a circulating fan over against the air supply outlet is arranged in the curing barn body. The air source heat pump dehumidification device has the waste heat recovery function, heat loss is small during dehumidification, and the air source heat pump is simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump baking rooms, in particular to an air source heat pump baking room capable of recovering waste heat. Background Art

[0002] Tobacco, an annual herbaceous plant of the genus Nicotiana in the Solanaceae family, is an important economic crop. Tobacco leaves, also known as tobacco leaves, can be used as raw materials for cigarettes and other tobacco products after baking and other processing, and these products have a wide range of consumer demand around the world.

[0003] In the processing of tobacco leaves, drying is an important link that affects its quality. At present, heat pump technology is one of the commonly used technologies in tobacco leaf drying. Heat pump drying equipment can extract heat from a low-temperature environment and release it to a high-temperature environment, that is, a curing room, thereby providing the tobacco leaves with the heat energy required for baking. Compared with traditional processing methods, the heat provided to tobacco leaves by heat pump drying equipment is uniform and stable, which helps to improve the overall quality of tobacco leaves, and has lower carbon emissions and energy consumption, and lower operating costs. However, the existing heat pump drying equipment has a bulky structure and needs to be optimized.

[0004] In addition, during the tobacco curing process, as the temperature inside the curing room rises, the humidity inside the curing room also rises. When the humidity inside the curing room is higher than the set value, dehumidification treatment is required to discharge the hot and humid air inside the curing room to the outside. However, while dehumidifying, the indoor heat is inevitably lost with the discharge of the hot and humid air, and the heat loss is large, which also needs to be improved. Utility Model Content

[0005] The utility model aims to provide an air source heat pump baking room capable of waste heat recovery, which not only has the waste heat recovery function but also has a simple structure of the air source heat pump.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] An air source heat pump baking room with waste heat recovery, comprising an air source heat pump and a baking room body, the air source heat pump comprising a shell, an evaporator, a compressor, a condenser and an evaporating fan; the interior of the shell is divided into a first cavity and a second cavity, and is provided with a fresh air channel and a dehumidification channel, and the shell is provided with an air inlet, an air outlet, a return air outlet, an air supply outlet, a fresh air outlet and a dehumidification outlet; the first cavity is communicated with the outside of the baking room body through the air inlet and the air outlet, and the second cavity is communicated with the inside of the baking room body through the return air outlet and the air supply outlet.

[0008] The fresh air channel is communicated with the outside of the baking room body through the fresh air port, and is connected to the second cavity, and a fresh air valve is arranged between the fresh air channel and the second cavity; the dehumidification channel is communicated with the inside of the baking room body through the dehumidification port, and is connected to the first cavity, and a dehumidification valve is arranged between the dehumidification channel and the first cavity.

[0009] The evaporator and the compressor are both installed in the first cavity, the evaporator is vertically arranged and positioned opposite to the exhaust port; the condenser is tiltedly arranged in the second cavity and separates the air supply port and the return air port from each other; the evaporator fan is arranged at the exhaust port; a circulating fan is arranged inside the baking room body, and the position of the circulating fan corresponds to the air supply port.

[0010] Furthermore, the air supply port is located above the condenser, and the fresh air valve, the dehumidification channel and the return air port are all located below the condenser.

[0011] Furthermore, a guide plate is arranged inside the second cavity, and the guide plate is obliquely arranged below the condenser, and the angle of the oblique installation is consistent with that of the condenser.

[0012] Furthermore, the condenser is placed at an angle of 40 to 50 degrees to the horizontal plane.

[0013] Furthermore, the fresh air channel is arranged in the first cavity, and the dehumidification channel is arranged in the second cavity.

[0014] Furthermore, a fresh air valve inspection door and a dehumidification air valve inspection door are provided on the side wall of the shell, and the position of the fresh air valve inspection door corresponds to the position of the fresh air valve, and the position of the dehumidification air valve inspection door corresponds to the position of the dehumidification air valve.

[0015] Furthermore, an evaporator water trough is horizontally arranged inside the first cavity, and a condenser water trough is horizontally arranged inside the second cavity. The evaporator water trough is located directly below the evaporator, and the condenser water trough is located below the condenser and corresponds to the lower side of the condenser. The bottoms of the evaporator water trough and the condenser water trough are both connected to a drain pipe, and the lower end of the drain pipe is led out of the shell.

[0016] Furthermore, the drain pipe includes a vertical drain pipe and a horizontal drain pipe, the upper end of the vertical drain pipe is connected to the evaporator water tank, and the lower end passes through the shell, one end of the horizontal drain pipe is connected to the vertical drain pipe, and the other end is connected to the condenser water tank.

[0017] Furthermore, a ceramic thick film heating module is provided inside the baking room body, and the ceramic thick film heating module is located between the air supply port and the circulating fan.

[0018] The utility model has the following beneficial effects:

[0019] 1. In this baking room, the evaporator of the air source heat pump is set vertically and the condenser is installed obliquely, which is conducive to reducing the size of the shell, making the overall structure of the air source heat pump more compact and streamlined, while also taking into account the windward area of ​​the evaporator and condenser.

[0020] 2. The air source heat pump of the baking room is provided with a fresh air duct inside, and a fresh air valve is provided between the fresh air duct and the second cavity. When the fresh air valve is opened, fresh air can be introduced into the room through the fresh air duct, and when the fresh air valve is closed, the fresh air can be blocked, separating the indoor and outdoor airflows from each other to avoid affecting the indoor temperature and humidity environment.

[0021] 3. The air source heat pump of the baking room is provided with a dehumidification channel inside, and a dehumidification air valve is provided between the dehumidification channel and the first cavity. When the dehumidification air valve is opened, the humid and hot gas in the room can be discharged to the outside through the dehumidification port and the dehumidification channel to achieve the purpose of dehumidification. While dehumidifying, the heat contained in the humid and hot gas can be captured by the evaporator to realize the waste heat recovery function and reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model.

[0023] Figure 2 It is a schematic diagram of the main structure of the baking room of the utility model.

[0024] Figure 3 This is a schematic diagram of the structure of the air source heat pump of the utility model.

[0025] Figure 4 This is a schematic diagram of the front view structure of the air source heat pump of the utility model.

[0026] Figure 5 It is a rear view structural schematic diagram of the air source heat pump of the utility model.

[0027] Figure 6 This is a left-side structural schematic diagram of the air source heat pump of the utility model.

[0028] Figure 7 It is a right view structural schematic diagram of the air source heat pump of the utility model.

[0029] Figure 8 This is a schematic diagram of the internal structure of the air source heat pump of the utility model.

[0030] Explanation of the main component symbols: 1. Shell; 2. Evaporator; 3. Compressor; 4. Condenser; 5. Evaporating fan; 6. First cavity; 7. Second cavity; 8. Exhaust port; 9. Air supply port; 10. Air inlet; 11. Return air port; 12. Fresh air port; 13. Fresh air channel; 14. Fresh air valve; 15. Dehumidification channel; 16. Dehumidification port; 17. Dehumidification air valve; 18. Guide plate; 19. Fresh air valve inspection door; 20. Dehumidification air valve inspection door; 21. Evaporator water tank; 22. Condenser water tank; 23. Vertical drain pipe; 24. Horizontal drain pipe; 25. Electric control box; 26. Operation panel; 27. High pressure gauge; 28. Low pressure gauge; 29. ​​Baking room body; 30. Circulation fan; 31. Ceramic thick film heating module. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 1-8 As shown, the utility model discloses an air source heat pump baking room capable of waste heat recovery, including an air source heat pump and a baking room body 29. The air source heat pump mainly includes a shell 1, an evaporator 2, a compressor 3, a condenser 4, an evaporation fan 5 and an electric control box 25. The inside of the shell 1 is separated by a vertical partition to form a first cavity 6 and a second cavity 7, and a fresh air channel 13 and a dehumidification channel 15 are also arranged inside the shell 1. The shell 1 is provided with an air inlet 10, an air outlet 8, a return air outlet 11, an air supply outlet 9, a fresh air outlet 12 and a dehumidification outlet 16. A circulating fan 30 and a temperature and humidity sensor are arranged inside the baking room body 29.

[0033] The first cavity 6 is connected to the outside of the baking room body 29 through the air inlet 10 and the air outlet 8, while the second cavity 7 is connected to the inside of the baking room body 29 through the air return port 11 and the air supply port 9. The air inlet 10 and the fresh air port 12 are designed with mesh holes, which can filter and prevent dust, and a mesh cover is provided on the outside of the air outlet 8.

[0034] The fresh air passage 13 is arranged on the side of the first cavity 6 facing the exhaust port 8, and the position of the fresh air port 12 corresponds to the first cavity 6. The fresh air passage 13 is connected to the outside of the baking room body 29 through the fresh air port 12, and is connected to the second cavity 7. A fresh air valve 14 is arranged at the position where the fresh air passage 13 is connected to the second cavity 7. The fresh air valve 14 is used to control the connection and isolation between the fresh air passage 13 and the second cavity 7. When the fresh air valve 14 is opened, the outdoor fresh air can be introduced into the baking room body 29 through the fresh air port 12, the fresh air passage 13, the second cavity 7 and the air supply port 9 in sequence. When the fresh air valve 14 is closed, the outdoor fresh air can be blocked, and the indoor and outdoor air flows can be separated from each other to avoid affecting the indoor temperature and humidity environment.

[0035] The dehumidification channel 15 is arranged inside the second cavity 7 and below the condenser 4, and the position of the dehumidification port 16 corresponds to the second cavity 7. The dehumidification channel 15 communicates with the interior of the baking room body 29 through the dehumidification port 16, and communicates with the first cavity 6. A dehumidification air valve 17 is arranged at the position where the dehumidification channel 15 communicates with the first cavity 6. In this embodiment, the dehumidification air valve 17 is located at the middle partition, which plays the role of connecting and isolating the dehumidification channel 15 and the first cavity 6. When the dehumidification air valve 17 is opened, the humid air on one side of the second cavity 7 can enter the dehumidification channel 15 through the dehumidification port 16, and is discharged to the outside of the baking room body 29 through the dehumidification air valve 17, the first cavity 6 and the exhaust port 8 in sequence, thereby achieving the purpose of dehumidification.

[0036] In order to ensure the normal use of the dehumidification air valve 17 and the above-mentioned fresh air valve 14, a fresh air valve inspection door 19 and a dehumidification air valve inspection door 20 are also correspondingly provided on the side wall of the housing 1. Among them, the position of the fresh air valve inspection door 19 corresponds to the side of the fresh air valve 14, and the position of the dehumidification air valve inspection door 20 corresponds to the side of the dehumidification air valve 17.

[0037] The evaporator 2, the compressor 3 and the electric control box 25 are all installed in the first cavity 6, and the position of the evaporator 2 is opposite to the exhaust port 8. The condenser 4 is arranged in the second cavity 7, and the air supply port 9 and the return air port 11 are separated from each other. Preferably, the evaporator 2 is arranged vertically and the condenser 4 is installed obliquely, which is conducive to reducing the size of the shell 1, while taking into account the windward area of ​​the evaporator 2 and the condenser 4, making the overall structure of the air source heat pump more compact and streamlined. In this embodiment, the evaporator 2 can adopt a single system or a dual system, and different working modes such as fixed frequency or variable frequency according to different needs and application scenarios. The condenser 4 can adopt a microchannel type, a copper tube fin type, etc., and is tilted at an angle of 40 to 50 degrees to the horizontal plane. Preferably, the condenser 4 is tilted at an angle of 45 degrees to the horizontal plane.

[0038] The evaporator 2, the compressor 3 and the condenser 4 are connected in sequence through a working medium circulation pipe. The working medium circulation pipe is filled with a refrigerant. When the refrigerant passes through the evaporator 2, it can absorb heat energy from the environment and evaporate into a gaseous state. It is then compressed and heated by the compressor 3 to become a high-temperature, high-pressure working medium and discharged from the compressor 3. After flowing into the condenser 4, it can release heat and heat the air.

[0039] The evaporation fan 5 is arranged at the exhaust port 8 to guide the external airflow of the baking room body 29 to enter and exit the first cavity 6. The position of the circulation fan 30 corresponds to the air supply port 9 to guide the internal airflow of the baking room body 29 to enter and exit the second cavity 7. The air supply port 9 is located above the condenser 4, and the return air port 11, the fresh air valve 14 and the dehumidification channel 15 are all located below the condenser 4. After the fresh air valve 14 is opened, the introduced fresh air needs to pass through the condenser 4 and then be discharged through the air supply port 9. A guide plate 18 is arranged inside the second cavity 7. The guide plate 18 is arranged obliquely below the condenser 4, and the angle of the oblique installation is consistent with that of the condenser 4, which can play a role in guiding the return air.

[0040] Since condensed water is inevitably generated when the evaporator 2 and the condenser 4 are in operation, an evaporator water tank 21 is horizontally arranged inside the first cavity 6, and a condenser water tank 22 is horizontally arranged inside the second cavity 7. The evaporator water tank 21 is located directly below the evaporator 2, and the condenser water tank 22 is located below the condenser 4, and corresponds to the lower side of the condenser 4. Both the evaporator water tank 21 and the condenser water tank 22 can receive the condensed water generated when the air source heat pump is in operation, and will not affect the windward area of ​​the evaporator 2 and the condenser 4. The bottoms of the evaporator water tank 21 and the condenser water tank 22 are both connected with a drain pipe, and the lower end of the drain pipe is led out of the shell 1, so that the condensed water accumulated in the evaporator water tank 21 and the condenser water tank 22 can be discharged, so as to avoid the condensed water being retained inside the shell 1 and causing damage to components, breeding of mold, etc.

[0041] Specifically, the drain pipe includes a vertical drain pipe 23 and a horizontal drain pipe 24. The upper end of the vertical drain pipe 23 is connected to the evaporator water tank 21, and the lower end directly passes through the shell 1. One end of the horizontal drain pipe 24 is connected to the middle of the vertical drain pipe 23, and the other end is connected to the condenser water tank 22.

[0042] When the baking room is in use, the temperature and humidity can be monitored in real time by the temperature and humidity sensor disposed in the baking room body 29, and adjustments can be made according to the measured temperature and humidity data to provide the temperature and humidity environment required by the user.

[0043] When performing temperature adjustment, the evaporation fan 5 guides the outdoor airflow from the air inlet 10 into the first cavity 6, and is discharged from the exhaust port 8 after passing through the evaporator 2. The circulation fan 30 guides the indoor airflow from the return air port 11 into the second cavity 7, and is discharged from the air supply port 9 after passing through the condenser 4. When the internal temperature of the curing room body 29 is lower than the set value, the heat of the air outside the curing room body 29 can be transferred to the interior of the curing room body 29 by using the condensation heat release principle to heat the indoor air to achieve temperature increase. Conversely, when the internal temperature of the curing room body 29 is higher than the set value, the indoor air can be cooled. By real-time monitoring and regulating the internal temperature of the curing room body 29, a suitable temperature environment can be provided, which can prevent the tobacco leaves from being over-dried and over-baked when used for drying tobacco leaves.

[0044] During the tobacco curing process, as the temperature inside the curing room body 29 increases, the humidity inside the curing room body 29 also increases. When the humidity inside the curing room body 29 is higher than the set value, the dehumidification air valve 17 can be opened, and the high-humidity air inside the curing room body 29 is discharged to the outside through the dehumidification channel 15, the first cavity 6 and the evaporation fan 5 to achieve the purpose of dehumidification. At the same time of dehumidification, the fresh air valve 14 can also be opened, and the dry fresh air from the outside is introduced through the fresh air channel 13, the second cavity 7 and the air supply port 9 to achieve the purpose of reducing the humidity inside the curing room body 29.

[0045] Since the dehumidification channel 15 and the fresh air channel 13 are isolated from each other, the dehumidification and fresh air introduction processes do not interfere with each other. In addition, during dehumidification, the hot and humid gas from the interior of the baking room body 29 flows through the evaporator 2 under the traction of the evaporation fan 5, and the heat contained in the hot and humid gas can be captured by the evaporator 2, so that the baking room also has a waste heat recovery function, less heat loss during dehumidification, and more energy saving.

[0046] In addition, a ceramic thick film heating module 31 is also provided inside the baking room body 29. The ceramic thick film heating module 31 is provided between the air supply port 9 and the circulating fan 30, and is used to quickly heat the air and improve the heating efficiency of the baking room. The air source heat pump of the baking room is also provided with an operation screen 26, a high pressure gauge 27 and a low pressure gauge 28, and an operating system is installed. The operating system has an automatic mode and a manual mode, and is controlled through the above-mentioned operation screen 26. In the automatic mode, the air source heat pump can be automatically operated according to the temperature and humidity sensor to keep the indoor temperature and humidity within the set range, and in the manual mode, the user can manually adjust the operation of the air source heat pump according to the actual temperature and humidity conditions.

[0047] In summary, the drying room has excellent temperature and humidity control functions and waste heat recovery functions, and is suitable for tobacco leaf drying. It can provide a suitable temperature and humidity environment for tobacco leaves to dry them.

[0048] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes in form and details of the present invention are within the scope of protection of the present invention without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An air source heat pump baking room capable of recovering waste heat, characterized in that: The invention comprises an air source heat pump and a baking room body, wherein the air source heat pump comprises a shell, an evaporator, a compressor, a condenser and an evaporating fan; the interior of the shell is divided into a first cavity and a second cavity, and is provided with a fresh air channel and a dehumidification channel; the shell is provided with an air inlet, an air outlet, a return air outlet, an air supply outlet, a fresh air outlet and a dehumidification outlet; the first cavity is communicated with the outside of the baking room body through the air inlet and the air outlet, and the second cavity is communicated with the inside of the baking room body through the return air outlet and the air supply outlet; The fresh air passage is communicated with the outside of the baking room body through the fresh air port, and is connected to the second cavity, and a fresh air valve is provided between the fresh air passage and the second cavity; the dehumidification passage is communicated with the inside of the baking room body through the dehumidification port, and is connected to the first cavity, and a dehumidification valve is provided between the dehumidification passage and the first cavity; The evaporator and the compressor are both installed in the first cavity, the evaporator is vertically arranged and positioned opposite to the exhaust port; the condenser is tiltedly arranged in the second cavity and separates the air supply port and the return air port from each other; the evaporator fan is arranged at the exhaust port; a circulating fan is arranged inside the baking room body, and the position of the circulating fan corresponds to the air supply port.

2. The air source heat pump baking room capable of recovering waste heat according to claim 1, characterized in that: The air supply port is located above the condenser, and the fresh air valve, the dehumidification channel and the return air port are all located below the condenser.

3. The air source heat pump baking room capable of recovering waste heat according to claim 2, characterized in that: A guide plate is arranged inside the second cavity. The guide plate is arranged obliquely below the condenser, and the angle of the oblique installation is consistent with that of the condenser.

4. The air source heat pump baking room capable of recovering waste heat according to claim 1, characterized in that: The condenser is placed at an angle of 40 to 50 degrees to the horizontal plane.

5. The air source heat pump baking room capable of waste heat recovery according to claim 1, characterized in that: The fresh air channel is arranged in the first cavity, and the moisture removal channel is arranged in the second cavity.

6. The air source heat pump baking room capable of recovering waste heat according to claim 1, characterized in that: A fresh air valve inspection door and a dehumidification air valve inspection door are provided on the side wall of the shell. The position of the fresh air valve inspection door corresponds to the position of the fresh air valve, and the position of the dehumidification air valve inspection door corresponds to the position of the dehumidification air valve.

7. The air source heat pump baking room capable of waste heat recovery according to claim 1, characterized in that: An evaporator water trough is horizontally arranged inside the first cavity, and a condenser water trough is horizontally arranged inside the second cavity. The evaporator water trough is located directly below the evaporator, and the condenser water trough is located below the condenser and corresponds to the lower side of the condenser. The bottoms of the evaporator water trough and the condenser water trough are both connected to a drain pipe, and the lower end of the drain pipe is led out of the shell.

8. The air source heat pump baking room capable of recovering waste heat according to claim 7, characterized in that: The drain pipe includes a vertical drain pipe and a horizontal drain pipe. The upper end of the vertical drain pipe is connected to the evaporator water tank, and the lower end passes through the shell. One end of the horizontal drain pipe is connected to the vertical drain pipe, and the other end is connected to the condenser water tank.

9. The air source heat pump baking room capable of recovering waste heat according to claim 1, characterized in that: A ceramic thick film heating module is arranged inside the baking room body, and the ceramic thick film heating module is located between the air supply port and the circulating fan.

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