A cigarette workshop air temperature and humidity processing system

Abstract

The utility model provides a kind of cigarette workshop air temperature and humidity processing system, belong to workshop temperature and humidity regulation technical field.The cigarette workshop air temperature and humidity processing system includes fresh air handling unit, air conditioning assembly, workshop, fresh air pipeline, air supply pipeline, main return air pipeline, three-way pipe, secondary return air pipeline, primary return air pipeline, exhaust air pipeline, secondary fresh air pipeline, bypass air pipeline, fresh air valve, exhaust air valve, primary return air valve, secondary return air valve, secondary fresh air valve and bypass air valve.In the utility model, the suitable climate of spring and autumn transition season is fully utilized, and outdoor natural fresh air is introduced, which greatly reduces the air temperature and humidity processing energy consumption in spring and autumn transition season.

Description

Technical Field

[0001] This utility model relates to the field of workshop temperature and humidity control technology, specifically to an air temperature and humidity treatment system for a cigarette manufacturing workshop. Background Technology

[0002] Cigarette factory production workshops have strict requirements for temperature, humidity, and control precision throughout the year. Therefore, to ensure these process requirements are met, the energy consumption of the air conditioning units in handling the air temperature and humidity is very high. (See also...) Figure 6 Air conditioning units need to provide chilled water and humidifying steam throughout the year to handle air temperature and humidity. However, during the spring and autumn transition seasons, the temperature and humidity of the outdoor natural fresh air can meet the temperature and humidity process requirements for most of the time. In addition, there is still a waste of recoverable heat and moisture in the exhaust air of the workshop return air through the return air fan. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the existing technology by proposing an air temperature and humidity control system for cigarette manufacturing workshops.

[0004] This utility model proposes an air temperature and humidity control system for a cigarette manufacturing workshop, comprising a fresh air unit, an air conditioning assembly, a workshop, a fresh air duct, a supply air duct, a main return air duct, a T-junction, a secondary return air duct, a primary return air duct, an exhaust air duct, a secondary fresh air duct, a bypass air duct, a fresh air valve installed on the fresh air duct, an exhaust air valve installed on the exhaust air duct, a primary return air valve installed on the primary return air duct, a secondary return air valve installed on the secondary return air duct, a secondary fresh air valve installed on the secondary fresh air duct, and a bypass air valve installed on the bypass air duct. The air conditioning assembly includes a return air section, a secondary mixing air section, a filter section for filtering air, a supply air section with one end connected to the first end of the secondary mixing air section, and an exhaust mixing air section with its first and second ends connected to the return air section and the filter section, respectively. The two ends of the fresh air duct are respectively connected to the fresh air unit and the third end of the exhaust mixing air section. One end of the secondary fresh air duct is connected to... The section of the fresh air duct located between the fresh air valve and the end connected to the exhaust mixing section; the two ends of the supply air duct are respectively connected to one end of the workshop and the other end of the supply air section; the two ends of the main return air duct are respectively connected to the other end of the workshop and the first end of the tee pipe; the two ends of the primary return air duct are respectively connected to the second end of the tee pipe and the return air section; one end of the exhaust air duct is connected to the fourth end of the exhaust mixing section; the two ends of the secondary return air duct are respectively connected to the third end of the tee pipe and the second end of the secondary mixing section; one end of the bypass air duct is connected to the filter section, and the other end is connected to the section of the secondary return air duct located between the secondary return air valve and the end connected to the secondary mixing section; the return air section includes a return air fan and a return air valve, the output end of the return air fan is connected to the exhaust mixing section, the return air valve is located at the input end of the return air section, the filter section is equipped with a first filter, and the supply air section is equipped with a supply air fan.

[0005] Furthermore, the fresh air handling unit includes a second filter, a first heating coil, a first humidifying coil, a first humidifier, and a fresh air unit, which are arranged sequentially along the direction from the end away from the fresh air duct to the end connected to the fresh air duct on the fresh air handling unit.

[0006] Furthermore, the air conditioning unit also includes a wet coil section, a dry coil section, a hot coil section, and a humidification section. The two ends of the wet coil section are respectively connected to one end of the filter section and one end of the dry coil section. The two ends of the hot coil section are respectively connected to the other end of the dry coil section and one end of the humidification section. The other end of the humidification section is connected to the third end of the secondary mixing section. A second wet coil tube is provided in the wet coil section. A dry coil tube is provided in the dry coil tube. A second hot coil tube is provided in the hot coil section. A second humidifier is provided in the humidification section.

[0007] Furthermore, it also includes heat and humidity exchangers connected to the exhaust duct and the fresh air duct respectively. The heat and humidity exchangers are used to exchange heat and humidity between the exhaust air in the exhaust duct and the fresh air in the fresh air duct, so that the temperature and humidity of the fresh air increase.

[0008] Furthermore, it also includes a temperature sensor for detecting the temperature of the fresh air and a humidity sensor for detecting the moisture content of the fresh air.

[0009] Furthermore, it also includes controllers for controlling the fresh air handling unit, air conditioning components, workshop, fresh air valve, exhaust valve, primary return air valve, secondary return air valve, secondary fresh air valve, and bypass air valve respectively.

[0010] Furthermore, the controller is used to control the fresh air handling unit, fresh air valve, secondary return air valve, second wet coil, dry coil, second hot coil, second humidifier and heat and moisture exchanger to stop when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is within the first preset range, and to control the secondary fresh air valve, first filter, bypass air valve, supply fan, primary return air valve, return air fan, return air valve and exhaust valve to open. The first preset range is the range between the first preset humidity and the second preset humidity, and the second preset humidity is greater than the first preset humidity.

[0011] Furthermore, the controller is used to stop the fresh air handling unit, fresh air valve, second wet coil, second hot coil, second humidifier, bypass air valve and heat and moisture exchanger when the fresh air temperature is greater than the first preset temperature and the fresh air humidity is within the first preset range, and to open the primary return air valve, exhaust air valve, return air valve, secondary fresh air valve, first filter, dry coil, return air fan and supply air fan. The first preset range is the range between the first preset humidity and the second preset humidity, and the second preset humidity is greater than the first preset humidity.

[0012] Furthermore, the controller is used to stop the fresh air unit, fresh air valve, second wet coil, dry coil and bypass air valve when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is lower than the first preset humidity, and to open the primary return air valve, exhaust air valve, return air valve, secondary fresh air valve, first filter, second hot coil, return air fan, secondary return air valve, supply fan, second humidifier and heat and moisture exchanger.

[0013] Furthermore, the controller is used to stop the fresh air unit, fresh air valve, second wet coil, second hot coil, second humidifier and dry coil when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is higher than the second preset humidity, and to open the primary return air valve, return air fan, exhaust valve, return air valve, secondary fresh air valve, first filter, blower, heat and humidity exchanger, secondary return air valve and bypass air valve.

[0014] The air temperature and humidity control system for a cigarette manufacturing workshop according to this utility model has the following beneficial effects: 1. When the fresh air unit, fresh air valve, secondary return air valve, second wet coil, dry coil, second hot coil, second humidifier, and heat exchanger are all stopped, and the secondary fresh air valve, first filter, bypass air valve, supply fan, primary return air valve, return air fan, return air valve, and exhaust air valve are all opened, outdoor fresh air enters the exhaust air mixing section through the secondary fresh air duct. The first filter filters the outdoor fresh air, and then the fresh air passes through the bypass air duct and secondary return air duct in sequence and enters the secondary mixing section. The supply air section receives the fresh air from the secondary mixing section, and the supply fan delivers the fresh air to the workshop. The workshop return air passes through the main return air duct, tee pipe, and primary return air duct in sequence and enters the return air section. The return air fan delivers the workshop return air to the exhaust air duct, thus placing the workshop return air outdoors. This fully utilizes the suitable climate of the spring and autumn transition seasons, introduces natural outdoor fresh air, and significantly reduces the energy consumption for air temperature and humidity control during the spring and autumn transition seasons. 2. The fresh air handling unit, fresh air valve, second wet coil, second hot coil, second humidifier, bypass air valve, and heat exchanger are all shut down. The primary return air valve, exhaust valve, return air valve, secondary fresh air valve, first filter, dry coil, return air fan, and supply fan are all opened. A portion of the workshop's return air is directly transported to the secondary mixing section via the secondary return air duct. This portion of return air then enters the supply air section and is subsequently transported back to the workshop by the supply fan. The second portion of the workshop's return air travels through the primary return air duct to the return air section, where the return air fan transports the workshop... The first unit of the other part of the return air is delivered to the exhaust pipeline and discharged outdoors. The second unit of the other part of the return air in the workshop is mixed with the fresh air delivered through the secondary fresh air pipeline in the exhaust mixing section to form the first mixed air. The first mixed air passes through the first filter, dry coil, secondary mixing section and enters the air supply section in sequence. The air supply fan delivers the first mixed air to the workshop, making full use of the suitable climate of the spring and autumn transition season to introduce outdoor natural fresh air and significantly reduce the energy consumption for air temperature and humidity treatment during the spring and autumn transition season. 3. The fresh air handling unit, fresh air valve, second wet coil, dry coil, and bypass air valve are all stopped. The primary return air valve, exhaust air valve, return air valve, secondary fresh air valve, first filter, second hot coil, return air fan, secondary return air valve, supply fan, second humidifier, and heat exchanger are all opened. A portion of the workshop's return air is directly transported to the secondary mixing section via the secondary return air duct. This portion of return air then enters the supply air section and is transported to the workshop by the supply fan. Another portion of the workshop's return air is transported to the return air section via the primary return air duct. The return air fan transports the first unit portion of the other portion of the workshop's return air to the exhaust duct and exchanges heat and moisture with the secondary fresh air in the secondary fresh air duct through the heat exchanger. After the heat and moisture exchange is completed, the other portion of the workshop's return air in the exhaust duct... The first unit of the air is discharged outdoors. After heat and humidity exchange, the fresh air in the fresh air duct is delivered to the exhaust mixing section. The return air fan delivers the second unit of the return air from the workshop to the exhaust mixing section and mixes it with the fresh air to form the second mixed air. The second mixed air passes through the first filter, the second heat coil, the second humidifier, the secondary mixing section and the supply air section in sequence. The supply air fan delivers the second mixed air to the workshop. It makes full use of the suitable climate of the spring and autumn transition season and introduces outdoor natural fresh air. During the spring and autumn transition season, the energy consumption for air temperature and humidity treatment is greatly reduced. At the same time, the waste heat and waste moisture in the exhaust air are recovered through the heat and humidity heat exchanger, thereby greatly reducing the energy consumption of chilled water and steam humidification required for air temperature and humidity treatment. 4. The fresh air handling unit, fresh air valve, second wet coil, second hot coil, second humidifier, and dry coil are all stopped. The primary return air valve, return air fan, exhaust valve, return air valve, secondary fresh air valve, first filter, supply fan, heat and moisture exchanger, secondary return air valve, and bypass air valve are all opened. A portion of the workshop's return air enters the return air section through the primary return air duct. The return air fan delivers the first unit portion of the workshop's return air to the exhaust duct. The first unit portion of the workshop's return air exchanges heat and moisture with the secondary fresh air in the secondary fresh air duct through the heat and moisture exchanger. After the heat and moisture exchange is completed, the first unit portion of the workshop's return air in the exhaust duct is discharged outdoors. After the heat and moisture exchange is completed, the secondary fresh air in the secondary fresh air duct is delivered to the exhaust mixing section. The return air fan then... A portion of the return air from the workshop is transported to the exhaust mixing section and mixed with the fresh air to form a third mixed air. The third mixed air then passes through the first filter and the bypass duct into the secondary return air duct, where it mixes with another portion of the return air from the workshop to form a fourth mixed air. The secondary return air duct transports the fourth mixed air to the secondary mixing section, which in turn transports it to the supply air section. The supply fan then delivers the fourth mixed air to the workshop. This fully utilizes the suitable climate of the spring and autumn transition seasons, introducing natural outdoor fresh air and significantly reducing the energy consumption for air temperature and humidity treatment during these seasons. Simultaneously, the waste heat and moisture in the exhaust air are recovered through a heat exchanger, thereby significantly reducing the energy consumption for chilled water and steam humidification required for air temperature and humidity treatment. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0016] Figure 1 This is a schematic diagram of the structure of an air temperature and humidity treatment system in a cigarette workshop according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a fresh air operation mode in an air temperature and humidity treatment system for a cigarette workshop, omitting the dry coil and heat exchanger, according to an embodiment of the present utility model. Figure 3 This is a schematic diagram of the structure of a mixed-air operation mode 1 in an air temperature and humidity treatment system for a cigarette workshop, omitting the bypass air duct, bypass air valve and heat exchanger, according to an embodiment of the present utility model. Figure 4 This is a schematic diagram of the mixed air operation mode 2 in an air temperature and humidity treatment system for a cigarette workshop according to an embodiment of the present utility model, omitting the bypass air duct, bypass air valve and dry coil; Figure 5 This is a schematic diagram of the structure of a mixed air operation mode 3 in an air temperature and humidity treatment system for a cigarette workshop, where the dry coil is omitted, according to an embodiment of this utility model. Figure 6 This is a schematic diagram of the existing technology.

[0017] In the diagram: 1-Fresh air handling unit, 11-Second filter, 12-First heating coil, 13-First wet coil, 14-First humidifier, 15-Fresh air unit, 2-Air conditioning components, 21-Return air section, 211-Return air fan, 212-Return air valve, 22-Exhaust air mixing section, 23-Filter section, 231-First filter, 24-Second wet coil, 25-Dry coil, 26-Second heating coil, 27-Second humidifier, 28-Secondary mixing section, 2 9-Air supply section, 291-Air supply fan, 3-Workshop, 4-Fresh air duct, 41-Fresh air valve, 51-Air supply duct, 52-Main return air duct, 53-T-connector, 61-Primary return air duct, 611-Primary return air valve, 62-Secondary return air duct, 621-Secondary return air valve, 63-Exhaust air duct, 631-Exhaust air valve, 7-Secondary fresh air duct, 71-Secondary fresh air valve, 8-Bypass air duct, 81-Bypass air valve, 9-Heat and humidity exchanger. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0019] Please see Figures 1 to 5This utility model discloses an air temperature and humidity control system for a cigarette manufacturing workshop, comprising a fresh air unit 1, an air conditioning assembly 2, a workshop 3, a fresh air duct 4, a supply air duct 51, a main return air duct 52, a T-junction 53, a secondary return air duct 62, a primary return air duct 61, an exhaust air duct 63, a secondary fresh air duct 7, a bypass air duct 8, a fresh air valve 41 installed on the fresh air duct 4, an exhaust valve 631 installed on the exhaust air duct 63, a primary return air valve 611 installed on the primary return air duct 61, and a secondary return air valve 611 installed on the secondary return air duct 62. The air conditioning unit 2 includes a return air valve 621, a secondary fresh air valve 71 installed on the secondary fresh air duct 7, and a bypass air valve 81 installed on the bypass air duct 8. The air conditioning unit 2 includes a return air section 21, a secondary mixing air section 28, a filter section 23 for filtering air, a supply air section 29 with one end connected to the first end of the secondary mixing air section 28, and an exhaust air mixing air section 22 with its first and second ends connected to the return air section 21 and the filter section 23, respectively. The fresh air duct 4 is connected at both ends to the fresh air unit 1 and the third end of the exhaust air mixing air section 22, respectively. One end of the secondary fresh air duct 7 is connected to the fresh air... The portion of duct 4 located between the fresh air valve 41 and the end connected to the exhaust mixing section 22; the two ends of the supply air duct 51 are respectively connected to one end of workshop 3 and the other end of the supply air section 29; the two ends of the main return air duct 52 are respectively connected to the other end of workshop 3 and the first end of the tee pipe 53; the two ends of the primary return air duct 61 are respectively connected to the second end of the tee pipe 53 and the return air section 21; one end of the exhaust air duct 63 is connected to the fourth end of the exhaust mixing section 22; the two ends of the secondary return air duct 62 are respectively connected to the third end of the tee pipe 53 and the second end of the secondary mixing section 28. Two ends; one end of the bypass duct 8 is connected to the filter section 23, and the other end is connected to the secondary return air duct 62, located between the secondary return air valve 621 and the end connected to the secondary mixing section 28; the return air section 21 includes a return air fan 211 and a return air valve 212, the first output end of the return air fan 211 is connected to the exhaust duct 63, the second output end is connected to the exhaust mixing section 22, the return air valve 212 is set on the second output end of the return air fan 211, the filter section 23 is provided with a first filter 231, and the air supply section 29 is provided with an air supply fan 291.

[0020] In this application, in order to save energy consumption of air conditioning component 2 in the cigarette workshop 3, the air conditioning component 2 and the air duct system are optimized and technically modified. By controlling and changing the air duct flow, the temperature and humidity of outdoor natural fresh air can meet the temperature and humidity process requirements for most of the time during the spring and autumn transition season. The suitable climate of the spring and autumn transition season is fully utilized to introduce outdoor natural fresh air, so as to significantly reduce the energy consumption of air temperature and humidity treatment during the spring and autumn transition season. The waste heat and moisture in the exhaust air are recovered through the heat and humidity exchanger, thereby significantly reducing the energy consumption of chilled water and steam humidification required for air temperature and humidity treatment, and meeting the temperature and humidity requirements of the workshop 3 process.

[0021] The fresh air handling unit 1 may include a second filter 11, a first heating coil 12, a first humidifying coil 13, a first humidifier 14, and a fresh air unit 15, arranged sequentially along the direction from the end away from the fresh air duct 4 to the end connected to the fresh air duct 4 on the fresh air handling unit 1.

[0022] Specifically, chilled water is introduced into the first wet coil 13, hot water is introduced into the first hot coil 12, and steam humidification is used in the first humidifier 14.

[0023] The air conditioning unit may also include a wet coil section, a dry coil section, a hot coil section, and a humidification section. The two ends of the wet coil section are respectively connected to one end of the filter section 23 and one end of the dry coil section. The two ends of the hot coil section are respectively connected to the other end of the dry coil section and one end of the humidification section. The other end of the humidification section is connected to the third end of the secondary mixing section 28. A second wet coil tube 24 is provided in the wet coil section. A dry coil tube 25 is provided in the dry coil tube 25. A second hot coil tube 26 is provided in the hot coil section. A second humidifier 27 is provided in the humidification section.

[0024] Specifically, chilled water is introduced into the second humidifying coil 24, hot water is introduced into the second heating coil 26, and steam humidification is used in the second humidifier 27.

[0025] As an example of the cigarette workshop air temperature and humidity treatment system in this embodiment, it may also include a heat and humidity heat exchanger 9 connected to the exhaust duct 63 and the secondary fresh air duct 7 respectively. The heat and humidity heat exchanger 9 is used to exchange heat and humidity between the exhaust air in the exhaust duct 63 and the secondary fresh air in the secondary fresh air duct 7 so that the temperature and humidity of the secondary fresh air increase.

[0026] Specifically, this application provides a dry coil section between the wet coil section and the hot coil section of the air conditioning component 2. A dry coil pipe 25 is provided in the dry coil section. A bypass duct 8 is provided between the portion of the secondary return air duct 62 located between its end connected to the secondary mixing section 28 and the secondary return air valve 621, and the filter section 23. One end of the bypass duct 8 is connected to the filter section 23, and the other end is connected to the portion of the secondary return air duct 62 located between the secondary return air valve 621 and the end connected to the secondary mixing section 28. A bypass valve 81 is provided on the bypass duct 8. A bypass valve 81 is provided on the fresh air duct 4 located between its end and the exhaust mixing section 22. A secondary fresh air duct 7 is led out from the part between the connected end and the fresh air valve 41. The two ends of the fresh air duct 4 are respectively connected to the third end of the fresh air unit 1 and the exhaust air mixing section 22. One end of the secondary fresh air duct 7 is connected to the part of the fresh air duct 4 located between the fresh air valve 41 and the end connected to the exhaust air mixing section 22. A secondary fresh air valve 71 is provided on the secondary fresh air duct 7. Heat and moisture exchangers are installed on the secondary fresh air duct 7 and the exhaust air duct 63. The heat and moisture exchangers are respectively connected to the exhaust air duct 63 and the secondary fresh air duct 7. This allows for better utilization of the natural fresh air during the spring and autumn transition seasons, as well as the recovery of heat and moisture content in the exhaust air.

[0027] As an example of the air temperature and humidity treatment system in the cigarette workshop in this embodiment, it may also include a temperature detection device for detecting the temperature of fresh air and a humidity detection device for detecting the moisture content of fresh air.

[0028] Specifically, the temperature detection component can be a temperature sensor, and the humidity detection component can be a humidity sensor.

[0029] As an example of the cigarette workshop air temperature and humidity treatment system in this embodiment, it may also include a controller for controlling the fresh air unit 1, the air conditioning component 2, the workshop 3, the fresh air valve 41, the exhaust valve 631, the primary return air valve 611, the secondary return air valve 621, the secondary fresh air valve 71, and the bypass air valve 81 respectively.

[0030] Specifically, the controller can be a PLC controller.

[0031] The controller is used to stop the fresh air handling unit 1, fresh air valve 41, secondary return air valve 621, second wet coil 24, dry coil 25, second hot coil 26, second humidifier 27 and heat exchanger 9 when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is within the first preset range. It also controls the secondary fresh air valve 71, first filter 231, bypass air valve 81, supply fan 291, primary return air valve 611, return air fan 211, return air valve 212 and exhaust valve 631 to open. The first preset range is the range between the first preset humidity and the second preset humidity, and the second preset humidity is greater than the first preset humidity.

[0032] Specifically, the first preset temperature can be 18℃, the first preset moisture content can be 9.43 g / kg, the second preset moisture content can be 13.34 g / kg, and the first preset range can be 9.43~13.34 g / kg. See also... Figure 2During the spring and autumn transition seasons, when the fresh air temperature and humidity meet the requirements and the return air temperature is not high (humidity is 9.43~13.34g / kg, air temperature is less than 18℃), a 100% fresh air operation mode is implemented. The second wet coil 24, dry coil 25, second hot coil 26, and second humidifier 27 in the fresh air unit 1 and air conditioning component 2 are not operated. In the 100% fresh air operation mode, fresh air is introduced through the secondary fresh air duct 7 and flows through the filter section 23, bypass duct, secondary return air duct, secondary mixing section 28, and supply fan 291 of the air conditioning component 2. The return air is discharged to the outside through the return air duct and the primary return air duct 61 via the return air fan 211. The air flow is as follows: the outdoor fresh air enters the exhaust mixing section 22 of the air conditioning component 2 through the secondary fresh air duct 7, and then undergoes primary and advanced filtration treatment by the first filter 231. Then it enters the secondary return air duct 62 through the newly added bypass air duct 8, and then enters the secondary mixing section 28 through the secondary return air duct 62. Next, it enters the supply air section 29, and then is directly delivered to workshop 3 by the supply air fan 291. The return air from workshop 3 is discharged to the outside through the primary return air duct 61 to the return air section 21. When the fresh air temperature is less than 18℃ and the fresh air moisture content is 9.43~13.34g / kg, the fresh air handling unit 1, fresh air valve 41, return air valve 212, secondary return air valve 621, second wet coil 24, dry coil 25, second hot coil 26, second humidifier 27, and heat exchanger 9 all stop, while the secondary fresh air valve 71, first filter 231, bypass air valve 81, supply fan 291, primary return air valve 611, return air fan 211, and exhaust valve 631 all open. Then, outdoor fresh air enters the exhaust mixing section 22 through the secondary fresh air duct 7, and the first filter 231 processes the outdoor fresh air. After filtration, the fresh air passes through the bypass duct 8 and the secondary return air duct 62 in sequence and enters the secondary mixing section 28. The supply air section 29 receives the fresh air from the secondary mixing section 28. The supply fan 291 delivers the fresh air to workshop 3. The return air from workshop 3 passes through the main return air duct 52, the tee pipe 53 and the primary return air duct 61 in sequence and enters the return air section 21. The return air fan 211 delivers the return air from workshop 3 to the exhaust duct 63, thereby placing the return air from workshop 3 outdoors. This fully utilizes the suitable climate of the spring and autumn transition seasons, introduces natural fresh air from outdoors, and significantly reduces the energy consumption for air temperature and humidity control during the spring and autumn transition seasons.

[0033] The controller is used to stop the fresh air handling unit 1, fresh air valve 41, second wet coil 24, second hot coil 26, second humidifier 27, bypass air valve 81 and heat and humidity exchanger 9 when the fresh air temperature is greater than the first preset temperature and the fresh air humidity content is within the first preset range. It also controls the primary return air valve 611, exhaust air valve 631, return air valve 212, secondary fresh air valve 71, first filter 231, dry coil 25, return air fan 211 and supply air fan 291 to open. The first preset range is the range between the first preset humidity content and the second preset humidity content, and the second preset humidity content is greater than the first preset humidity content.

[0034] Specifically, the first preset temperature can be 18℃, the first preset moisture content can be 9.43 g / kg, the second preset moisture content can be 13.34 g / kg, and the first preset range can be 9.43~13.34 g / kg. See also... Figure 3During the spring and autumn transition seasons, when the fresh air temperature is too high and needs to be cooled, but the humidity content meets the requirements (humidity content 9.43~13.34g / kg, air temperature above 18℃), but the return air temperature is too high and needs to be cooled, when the return air temperature is above 24℃, exhaust air is maintained, and a mixed operation mode 1 of return air and fresh air is adopted. The second wet coil 24, the second hot coil 26, and the second humidifier 27 in the fresh air unit 1 and the air conditioning component 2 are not in operation. In the mixed operation mode 1, the primary return air is sent to the exhaust air mixing section 22 by the return air fan 211 and then mixed with the secondary fresh air from the secondary fresh air duct 7 in the exhaust air mixing section 22. Then it flows through the filter section 23, dry coil 25, secondary mixing section 28 and supply fan 291 of the air conditioning component 2 in sequence. The return air of workshop 3 passes through the main return air duct 52 and the primary return air duct 61 and then passes through the return air fan. 211 is discharged outdoors; the airflow process is as follows: the primary return air output by the return air fan 211 and the outdoor fresh air delivered by the secondary fresh air duct 7 are mixed in the exhaust air mixing section 22 in the air conditioning component 2 to form the first mixed air. The first mixed air first passes through the primary and advanced filtration processes of the first filter 231, then passes through the medium-temperature dry coil 25 for cooling and regulation, and then is directly delivered to workshop 3 by the supply fan 291. Part of the return air in workshop 3 is directly delivered to the secondary mixing section 28 of the air conditioning component 2 via the secondary return air duct 62, then enters the supply air section 29, and is then delivered to workshop 3 by the supply fan 291. Another part of the return air in workshop 3 passes through the primary return air duct 61 to the return air fan 211, and then a part of the return air is discharged outdoors by the return air fan 211. The remaining return air and fresh air are mixed in the exhaust air mixing section 22 in the air conditioning component 2 before entering the next process. When the fresh air temperature is greater than 18℃ and the fresh air moisture content is 9.43~13.34g / kg, the fresh air handling unit 1, fresh air valve 41, second wet coil 24, second hot coil 26, second humidifier 27, bypass air valve 81, and heat exchanger 9 are all stopped. The primary return air valve 611, exhaust valve 631, secondary fresh air valve 71, first filter 231, dry coil 25, return air fan 211, return air valve 212, and supply fan 291 are all opened. A portion of the return air from workshop 3 is directly transported to the secondary mixing section 28 via the secondary return air duct 62. This portion of the return air then enters the supply air section 29 and is subsequently transported to workshop 3 by the supply fan 291. The second part of the return air from workshop 3 goes to the return air section 21 via the primary return air duct 61. The return air fan 211 transports the first unit part of the other part of the return air from workshop 3 to the exhaust duct and discharges it outdoors. The second unit part of the other part of the return air from workshop 3 mixes with the fresh air transported via the secondary fresh air duct 7 in the exhaust mixing section 22 to form the first mixed air. The first mixed air passes through the first filter 231, the dry coil 25, the secondary mixing section 28 and enters the air supply section 29 in sequence. The air supply fan 291 delivers the first mixed air to workshop 3, making full use of the suitable climate of the spring and autumn transition season to introduce outdoor natural fresh air and significantly reduce the energy consumption for air temperature and humidity treatment during the spring and autumn transition season.

[0035] The controller is used to stop the fresh air handling unit 1, fresh air valve 41, second wet coil 24, dry coil 25 and bypass air valve 81 when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is lower than the first preset humidity. It also controls the primary return air valve 611, exhaust air valve 631, return air valve 212, secondary fresh air valve 71, first filter 231, second heat coil 26, return air fan 211, secondary return air valve 621, supply air fan 291, second humidifier 27 and heat and humidity exchanger 9 to open.

[0036] Specifically, the first preset temperature can be 18℃, and the first preset moisture content can be 9.43 g / kg. See also Figure 4During the spring and autumn transition seasons, when both the temperature and humidity of the fresh air are low (humidity less than 9.43 g / kg, air temperature less than 18°C), exhaust air is maintained, and a mixed operation mode 2 of return air and fresh air is adopted. The second wet coil 24 and dry coil 25 in the fresh air unit 1 and air conditioning component 2 are not operated. The airflow process is as follows: after the exhaust air and the secondary fresh air exchange heat and moisture through the heat and moisture exchanger 9, the temperature and humidity of the secondary fresh air increase. Part of the primary return air and the outdoor fresh air after heat and moisture exchange are mixed in the exhaust air mixing section 22 in the air conditioning component 2 to form a second mixed air. The second mixed air first passes through the primary and advanced two-stage filtration of the first filter 231, and then... The air is first cooled and humidified by the second heating coil 26 and the second humidifier 27, and then sent directly to workshop 3 by the air supply fan 291. Part of the return air from workshop 3 is sent directly to the secondary mixing section 28 of the air conditioning unit 2 via the secondary return air duct 62, and then enters the air supply fan 291 room before being sent to workshop 3 by the air supply fan 291. Another part of the return air from workshop 3 returns to the return air fan 211 via the primary return air duct 61, and then a part of the return air is discharged to the exhaust duct 63 via the return air fan 211. After exchanging heat and moisture with the fresh air through the heat and moisture exchanger, the return air is discharged outdoors. The remaining return air and the fresh air after heat and moisture exchange are mixed in the exhaust mixing section 22 in the air conditioning unit 2 before entering the next process.When the fresh air temperature is less than 18℃ and the fresh air moisture content is less than 9.43g / kg, the fresh air handling unit 1, fresh air valve 41, second wet coil 24, dry coil 25, and bypass air valve 81 all stop, and the primary return air valve 611, exhaust air valve 631, return air valve 212, secondary fresh air valve 71, first filter 231, second heat coil 26, return air fan 211, secondary return air valve 621, supply fan 291, second humidifier 27, and heat and moisture exchanger are all stopped. All 9 are activated. A portion of the return air from workshop 3 is directly transported to the secondary mixing section 28 via the secondary return air duct 62. This portion of return air then enters the supply air section 29 and is transported to workshop 3 by the supply air fan 291. Another portion of the return air from workshop 3 is transported to the return air section 21 via the primary return air duct 61. The return air fan 211 transports the first unit portion of the other portion of return air from workshop 3 to the exhaust duct 63, where it is combined with the secondary fresh air in the secondary fresh air duct 7 and passes through the heat exchanger 9. Heat and humidity exchange is performed. After the heat and humidity exchange is completed, the first unit portion of the return air from workshop 3 in exhaust duct 63 is discharged to the outside. After the heat and humidity exchange is completed, the secondary fresh air in secondary fresh air duct 7 is delivered to exhaust mixing section 22. Return air fan 211 delivers the second unit portion of the return air from workshop 3 to exhaust mixing section 22 and mixes it with secondary fresh air to form second mixed air. The second mixed air passes through first filter 231, second heat coil 26, second humidifier 27, secondary mixing section 28 and air supply section 29 in sequence. Air supply fan 291 delivers the second mixed air to workshop 3. Taking full advantage of the suitable climate of the spring and autumn transition season, outdoor natural fresh air is introduced, which greatly reduces the energy consumption of air temperature and humidity treatment during the spring and autumn transition season. At the same time, the waste heat and waste moisture in the exhaust air are recovered through heat and humidity heat exchanger 9, thereby greatly reducing the energy consumption of chilled water and steam humidification required for air temperature and humidity treatment.

[0037] The controller is used to stop the fresh air handling unit 1, fresh air valve 41, second wet coil 24, second hot coil 26, second humidifier 27 and dry coil 25 when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is higher than the second preset humidity. It also controls the primary return air valve 611, return air fan 211, exhaust valve 631, return air valve 212, secondary fresh air valve 71, first filter 231, supply fan 291, heat and humidity heat exchanger 9, secondary return air valve 621 and bypass air valve 81 to open.

[0038] Specifically, the first preset temperature can be 18℃, and the second preset moisture content can be 13.43 g / kg. See also Figure 5During the spring and autumn transition seasons, when the fresh air temperature meets the requirements but the humidity is high (humidity above 13.34 g / kg, air temperature below 18℃), exhaust air is maintained, and a mixed operation mode of return air and fresh air is adopted. The dry and wet coils, heating coils, and humidifiers of the fresh air unit 1 and the air conditioning unit are not operated. Because the proportion of fresh air is low (less than 25% return air), the high humidity and low temperature period is usually short. Humidity regulation only requires dehumidification through the heat exchanger before mixing with a large amount of return air to meet the requirements. The airflow path is as follows: exhaust air and secondary fresh air undergo heat and humidity exchange through the heat exchanger 9, resulting in an increase in the temperature and a decrease in the humidity of the secondary fresh air. Part of the primary return air and the outdoor fresh air after heat and humidity exchange mix in the exhaust mixing section 22 within the air conditioning unit 2 to form a third mixed air. The third mixed air first passes through the first... The air is filtered through a primary and secondary filter 231, then enters the secondary return air duct 62 through the bypass duct 8, then enters the secondary mixing section 28 through the secondary return air duct 62, then enters the supply air section 29, and is then directly delivered to workshop 3 by the supply air fan 291. Part of the return air from workshop 3 is sent to workshop 3 after passing through the secondary return air duct 62 and the fresh air treated by the heat and moisture exchanger of the primary return air. Another part of the return air from workshop 3 returns to the return air fan 211 through the primary return air duct 61, and then a part of the return air is discharged to the exhaust duct 63 through the return air fan 211 and is discharged outdoors after heat and moisture exchange with the secondary fresh air through the heat and moisture exchanger. The remaining return air and the heat and moisture exchanged fresh air are mixed in the exhaust mixing section 22 in the air conditioning unit 2 before entering the next process.When the fresh air temperature is below 18℃ and the fresh air moisture content is above 13.34g / kg, the fresh air handling unit 1, fresh air valve 41, second wet coil 24, second hot coil 26, second humidifier 27, and dry coil 25 all stop. The primary return air valve 611, return air fan 211, exhaust valve 631, return air valve 212, secondary fresh air valve 71, first filter 231, supply fan 291, heat exchanger 9, secondary return air valve 621, and bypass air valve 81 all open. A portion of the return air from workshop 3 enters the return air section 21 through the primary return air duct 61. The return air fan 211 transports the first unit portion of the return air from workshop 3 to the exhaust duct. The first unit portion of the return air from workshop 3 exchanges heat and moisture with the secondary fresh air in the secondary fresh air duct 7 through the heat exchanger 9. After the heat and moisture exchange is completed, the first unit portion of the return air from workshop 3 in the exhaust duct 63 is discharged outdoors. After completion, the fresh air in the secondary fresh air duct 7 is delivered to the exhaust air mixing section 22. The return air fan 211 delivers a portion of the second unit of the return air from workshop 3 to the exhaust air mixing section 22 and mixes it with the fresh air to form a third mixed air. The third mixed air passes through the first filter 231 and the bypass air duct 8 in sequence and enters the secondary return air duct 62, where it mixes with another portion of the return air from workshop 3 to form a fourth mixed air. The secondary return air duct 62 delivers the fourth mixed air to the secondary mixing section 28. The secondary mixing section 28 delivers the fourth mixed air to the air supply section 29. The air supply fan 291 delivers the fourth mixed air to workshop 3. By making full use of the suitable climate of the spring and autumn transition season, outdoor natural fresh air is introduced, which significantly reduces the energy consumption for air temperature and humidity treatment during the spring and autumn transition season. At the same time, the waste heat and moisture in the exhaust air are recovered through the heat and humidity heat exchanger 9, thereby significantly reducing the energy consumption of chilled water and steam humidification required for air temperature and humidity treatment.

[0039] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0040] It should be noted that in the description of this application, the terms "upper end," "lower end," and "bottom end," indicating orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise limited, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate 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 the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An air temperature and humidity control system for a cigarette manufacturing workshop, characterized in that: Includes fresh air handling unit (1), air conditioning components (2), workshop (3), fresh air duct (4), supply air duct (51), main return air duct (52), T-junction (53), secondary return air duct (62), primary return air duct (61), exhaust air duct (63), secondary fresh air duct (7), bypass air duct (8), fresh air valve (41) installed on fresh air duct (4), exhaust air valve (631) installed on exhaust air duct (63), primary return air valve (611) installed on primary return air duct (61), secondary return air valve (621) installed on secondary return air duct (62), and secondary fresh air duct (7). The air conditioning unit (2) includes a return air section (21), a secondary mixing air section (28), a filter section (23) for filtering air, a supply air section (29) with one end connected to the first end of the secondary mixing air section (28), and an exhaust air mixing air section (22) with the first end and the second end connected to the return air section (21) and the filter section (23) respectively; the fresh air duct (4) is connected at both ends to the third end of the fresh air unit (1) and the exhaust air mixing air section (22) respectively, and one end of the secondary fresh air duct (7) is connected to the fresh air duct (4). The portion located between the fresh air valve (41) and the end connected to the exhaust mixing section (22); the two ends of the supply air duct (51) are respectively connected to one end of the workshop (3) and the other end of the supply air section (29); the two ends of the main return air duct (52) are respectively connected to the other end of the workshop (3) and the first end of the tee pipe (53); the two ends of the primary return air duct (61) are respectively connected to the second end of the tee pipe (53) and the return air section (21); one end of the exhaust air duct (63) is connected to the fourth end of the exhaust mixing section (22); the two ends of the secondary return air duct (62) are respectively connected to the third end of the tee pipe (53) and the secondary mixing section (21). The second end of the air section (28); one end of the bypass air duct (8) is connected to the filter section (23), and the other end is connected to the secondary return air duct (62) between the secondary return air valve (621) and the end connected to the secondary mixing air section (28); the return air section (21) includes a return air fan (211) and a return air valve (212), the output end of the return air fan (211) is connected to the exhaust mixing air section (22), the return air valve (212) is set on the input end of the return air section (21), the filter section (23) is provided with a first filter (231), and the air supply section (29) is provided with an air supply fan (291).

2. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 1, characterized in that: The fresh air handling unit (1) includes a second filter (11), a first hot coil (12), a first wet coil (13), a first humidifier (14), and a fresh air unit (15). The second filter (11), the first hot coil (12), the first wet coil (13), the first humidifier (14), and the fresh air unit (15) are arranged sequentially along the direction from the end away from the fresh air duct (4) to the end connected to the fresh air duct (4) on the fresh air handling unit (1).

3. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 1 or 2, characterized in that: The air conditioning assembly (2) further includes a wet coil section, a dry coil section, a hot coil section and a humidification section. The two ends of the wet coil section are respectively connected to one end of the filter section (23) and one end of the dry coil section. The two ends of the hot coil section are respectively connected to the other end of the dry coil section and one end of the humidification section. The other end of the humidification section is connected to the third end of the secondary mixing section (28). The wet coil section is provided with a second wet coil tube (24). The dry coil section is provided with a dry coil tube (25). The hot coil section is provided with a second hot coil tube (26). The humidification section is provided with a second humidifier (27).

4. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 3, characterized in that: It also includes a heat and humidity heat exchanger (9) connected to the exhaust duct (63) and the fresh air duct (7) respectively. The heat and humidity heat exchanger (9) is used to exchange heat and humidity between the exhaust air in the exhaust duct (63) and the fresh air in the fresh air duct (7) so that the temperature and humidity of the fresh air increase.

5. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 4, characterized in that: It also includes temperature sensors for detecting the temperature of fresh air and humidity sensors for detecting the moisture content of fresh air.

6. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 5, characterized in that: It also includes controllers for controlling the fresh air handling unit (1), air conditioning components (2), workshop (3), fresh air valve (41), exhaust valve (631), primary return air valve (611), secondary return air valve (621), secondary fresh air valve (71) and bypass air valve (81) respectively.

7. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 6, characterized in that: The controller is used to stop the fresh air handling unit (1), fresh air valve (41), secondary return air valve (621), second wet coil (24), dry coil (25), second hot coil (26), second humidifier (27) and heat and humidity exchanger (9) when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is within the first preset range. It also controls the secondary fresh air valve (71), first filter (231), bypass air valve (81), blower (291), primary return air valve (611), return air fan (211), return air valve (212) and exhaust valve (631) to open. The first preset range is the range between the first preset humidity and the second preset humidity, and the second preset humidity is greater than the first preset humidity.

8. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 6, characterized in that: The controller is used to stop the fresh air handling unit (1), fresh air valve (41), second wet coil (24), second hot coil (26), second humidifier (27), bypass air valve (81) and heat and humidity exchanger (9) when the fresh air temperature is greater than the first preset temperature and the fresh air humidity is within the first preset range. It also controls the primary return air valve (611), exhaust air valve (631), return air valve (212), secondary fresh air valve (71), first filter (231), dry coil (25), return air fan (211) and supply air fan (291) to open. The first preset range is the range between the first preset humidity and the second preset humidity, and the second preset humidity is greater than the first preset humidity.

9. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 6, characterized in that: The controller is used to stop the fresh air unit (1), fresh air valve (41), second wet coil (24), dry coil (25) and bypass air valve (81) when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is lower than the first preset humidity. It also controls the primary return air valve (611), exhaust air valve (631), return air valve (212), secondary fresh air valve (71), first filter (231), second heat coil (26), return air fan (211), secondary return air valve (621), air supply fan (291), second humidifier (27) and heat and humidity exchanger (9) to open.

10. The air temperature and humidity control system for a cigarette manufacturing workshop as described in claim 6, characterized in that: The controller is used to stop the fresh air handling unit (1), fresh air valve (41), second wet coil (24), second hot coil (26), second humidifier (27) and dry coil (25) when the fresh air temperature is lower than the first preset temperature and the fresh air humidity is greater than the second preset humidity. It also controls the primary return air valve (611), return air fan (211), exhaust valve (631), return air valve (212), secondary fresh air valve (71), first filter (231), blower (291), heat and humidity heat exchanger (9), secondary return air valve (621) and bypass air valve (81) to open.

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