An energy-saving direct expansion combined air-conditioning unit for cigarette factories

Abstract

The present invention provides an energy-saving direct expansion combined air conditioning unit for cigarette factories, belonging to the technical field of air conditioning equipment. The unit comprises a combined air conditioning unit, a direct expansion fresh air unit, and an air supply assembly. The direct expansion unit is added to a traditional combined air conditioning unit. During normal working days, the combined air conditioning unit is used to deliver air to the entire factory area, while during holidays, the direct expansion unit is used to deliver air to specific areas of the factory. This combination allows for the rational allocation of the specifications and functions of the combined air conditioning unit and the direct expansion unit based on the needs of different time periods and regions, thereby optimizing equipment investment, reducing initial investment costs while also lowering energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of air-conditioning equipment, and in particular is an energy-saving direct expansion combined air-conditioning unit for a cigarette factory. Background Art

[0002] As a tobacco production facility, cigarette factories have stringent requirements for environmental temperature and humidity control. The quality of the tobacco leaves and the taste of the cigarettes are closely related to the temperature and humidity of the production environment. Therefore, cigarette factories require air conditioning systems to maintain a stable production environment.

[0003] Traditional cigarette factory air conditioning systems usually use combined air conditioning units that can provide cooling, heating, humidification and dehumidification functions to meet the different needs of the cigarette production process.

[0004] However, during holidays in cigarette factories, traditional combined air-conditioning units are designed to serve the entire area. When cooling local areas, energy waste will occur because the operating efficiency of the large system will decrease under the needs of small areas, and the energy consumption is relatively high. Therefore, there is an urgent need for an energy-saving direct expansion combined air-conditioning unit for cigarette factories. Summary of the Invention

[0005] In view of the above problems, the present invention provides an energy-saving direct expansion combined air-conditioning unit for use in a cigarette factory.

[0006] The technical solution of the present invention is: an energy-saving direct expansion combined air conditioning unit for a cigarette factory, comprising a combined air conditioning unit, a direct expansion fresh air unit, and an air supply component;

[0007] The combined air-conditioning unit includes a surface cooling section, a steam heating section, and a steam humidifying section, which are sequentially arranged along the air flow direction. The surface cooling section is provided with a surface cooler and a water baffle installed on the air outlet side of the surface cooler. The steam heating section is provided with a steam heater, one side of the steam heater is connected to the water outlet pipe of the surface cooler. The steam humidifying section is provided with a steam humidifier connected to the other side of the steam heater, and a humidity sensor for real-time monitoring of the humidity of the air.

[0008] The direct expansion fresh air unit includes a direct expansion cooling section connected to the surface cooling section and a direct expansion condensation reheat section. The direct expansion cooling section is provided with a compressor, a first condenser, an expansion valve and an evaporator connected in sequence. The evaporator and the compressor are connected via a connecting pipe. The direct expansion condensation reheat section is provided with a second condenser and a reheater connected to the second condenser. The first condenser and the second condenser are connected to a condensate drainage device for collecting condensed water.

[0009] The air supply assembly includes an air blower connected to the steam humidification section and the direct expansion condensation reheating section, and a Y-shaped air supply duct connected to the air blower. Of the two free ends of the Y-shaped air supply duct, one end is used for air transportation in the entire area of ​​the cigarette factory, and the other end is used for air transportation in a local area of ​​the cigarette factory. The Y-shaped air supply duct is connected to the compressor and the steam heater respectively through the return air duct, and the surface cooler is connected to the steam heater and the compressor respectively through branch air pipes.

[0010] Furthermore, a filter assembly is connected to the air inlet of the surface cooling section, and the filter assembly includes a main frame with several sliding mounting openings distributed along the airflow direction at the upper end, several filter plates slidingly connected to the sliding mounting openings one by one, and a pull-out horizontal plate connected to the upper end of each of the filter plates, and the mesh size of each filter plate distributed along the airflow direction increases sequentially.

[0011] Description: When the air passes through the filter plates with increasing mesh numbers, progressive filtration can be achieved. The filter plates with lower mesh numbers can intercept larger particulate impurities, such as dust and hair. As the airflow continues to move forward, the filter plates with higher mesh numbers can intercept smaller particles, such as fine dust and microorganisms. This progressive filtration method can improve the overall filtration efficiency and ensure that the air passing through the surface cooling section is cleaner. When the filter plates need to be cleaned, just pull the horizontal plate by hand to slide each filter plate out from the corresponding sliding installation port. The structure is simple and the operation is easy.

[0012] Furthermore, an electromagnetic adsorption unit is provided at the connection between the pull-out horizontal plate and the upper end of each filter plate, and the electromagnetic adsorption unit includes a mounting recessed plate provided at the upper end of each filter plate and provided with a metal block inside, an adsorption recessed plate provided at the bottom end of the pull-out horizontal plate and corresponding one-to-one to the adsorption recessed plate, and an electromagnetic suction cup provided inside the adsorption recessed plate.

[0013] Description: Since the upper ends of each filter plate are connected to the pull-out horizontal plate through the electromagnetic adsorption unit, it is possible to realize the overall batch installation and removal of all filter plates, and to install and remove a single filter plate by turning on or off the electromagnetic adsorption unit. In the case of not affecting the overall filtering function, precise maintenance operations can be performed on a single filter plate, which increases the flexibility of operation. When the electromagnetic adsorption unit is in use, the electromagnetic suction cup is energized. At this time, the metal block is adsorbed and fixed by the electromagnetic suction force of the electromagnetic suction cup, so that the corresponding filter plate is adsorbed and can be pulled out. After the electromagnetic suction cup is powered off, the electromagnetic suction force disappears, and the filter plate will not be pulled out as the pull-out horizontal plate is pulled, and the reliability is high.

[0014] Furthermore, a pull-out handle is provided on the upper end of the pull-out horizontal plate.

[0015] Note: The pull-out handle makes it easy to pull out the pull-out horizontal board.

[0016] Furthermore, it also includes an intelligent automatic control component, which includes a controller, temperature and humidity sensors provided at the air inlet of the surface cooling section and the air outlet of the Y-shaped air supply duct, an air quality sensor provided at the air inlet of the surface cooling section, pressure sensors provided at the inlet and outlet of the compressor and the Y-shaped air supply duct, and an operation panel connected to the controller.

[0017] Temperature and humidity sensors located at the inlet of the surface cooling section and the outlet of the Y-shaped air supply duct continuously collect air temperature and humidity data. The temperature and humidity data collected at the air inlet reflects the initial state of the air entering the combined air conditioning unit, while the temperature and humidity data at the outlet represent the state of the treated air before being delivered to the cigarette factory area. Air quality sensors monitor the quality of the air entering the surface cooling section, helping to determine whether the air entering this section requires special treatment or whether it may have adverse effects on internal components. Pressure sensors measure pressure data in real time. Pressure data at the compressor inlet and outlet is crucial for determining the compressor's operating status and whether there are blockages or leaks. Pressure data at the Y-shaped air supply duct helps understand resistance during the air supply process and the efficiency of air delivery. The controller receives data from each sensor and analyzes this data according to preset programs and algorithms. Once the controller makes a decision based on the data analysis, it adjusts the relevant equipment through the operation panel. Intelligent automatic control components also enable coordinated adjustments between devices, resulting in a high degree of automation.

[0018] Furthermore, a plurality of surface cooling water retaining areas are sequentially provided in the surface cooling section along the air flow direction, a surface cooler is provided between each of the surface cooling water retaining areas, two adjacent surface coolers are connected and a first electric valve is provided at the connection, and each surface cooler is connected to the steam heater and the compressor and a second electric valve is provided at the connection.

[0019] Description: Several surface cooling water retaining areas are set in sequence along the direction of airflow, and the airflow can undergo multiple condensation processes. When the air passes through the first surface cooler, the temperature begins to drop and the water vapor in it begins to condense. When passing through the next surface cooler, the temperature drops further and more water vapor can be condensed. This gradual cooling and condensation process can improve the condensation efficiency of water vapor in the airflow. Compared with the case where it only passes through the surface cooler once, more water vapor can be converted into condensed water and separated, which can more accurately control the humidity of the air and better meet the production requirements of the cigarette factory. The two adjacent surface coolers are connected by a first electric valve. At the same time, each surface cooler is connected to the steam heater and the compressor through a second electric valve. On the one hand, the faulty surface cooler can be isolated from the system by closing the corresponding electric valve without affecting the normal operation of other surface coolers. On the other hand, the working status of different numbers of surface coolers can be flexibly controlled according to actual humidity requirements to avoid unnecessary energy consumption.

[0020] Furthermore, heat dissipation fins are provided on the outside of the first condenser and the second condenser, and the surfaces of the heat dissipation fins are coated with a heat dissipation enhancement coating, which is a nano-ceramic heat dissipation coating.

[0021] Description: Improve the heat dissipation efficiency of the condenser and reduce the energy consumption of the compressor.

[0022] Furthermore, the condensate drainage device is connected to a condensate recovery tank, and two downward-inclined inclined water guide plates are symmetrically provided in the condensate recovery tank and located at the water inlet. The inclined water guide plates are provided with multiple parallel water guide grooves, and a liquid level sensor is provided at the bottom of the inclined water guide plates.

[0023] Description: The condensed water generated during the operation of the first condenser and the second condenser is collected by the condensed water drainage device to prevent the condensed water from accumulating in the first condenser and the second condenser. The collected condensed water will flow into the condensed water recovery tank. At this time, the condensed water will be guided to the bottom in an orderly manner through the various water guide grooves on the inclined water guide plate, thereby improving the accuracy and efficiency of condensed water collection.

[0024] Furthermore, the return air duct is provided with a filter and a check valve.

[0025] Description: Some of the air that has been processed and circulated in the cigarette factory can be reintroduced into the combined air-conditioning unit and the direct expansion fresh air unit through the return air duct, which can reduce the energy required for the combined air-conditioning unit and the direct expansion fresh air unit to process the new air, thereby achieving the purpose of energy saving. At the same time, the return air duct helps to maintain the pressure balance in the entire system. It ensures that during the air transportation and circulation process, the air pressure in each area remains relatively stable, avoiding problems such as excessive pressure difference affecting the normal flow of air or causing air leakage. The main function of the check valve is to prevent air flow backflow, ensuring that the air can only flow in the return air duct in the predetermined direction. The filter can intercept dust, impurities and other particulate matter in the return air.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) When using the energy-saving direct expansion combined air conditioning unit for a cigarette factory of the present invention, a direct expansion unit is added to a conventional combined air conditioning unit. On normal working days, the combined air conditioning unit is used to transport air to the entire area of ​​the cigarette factory, and on holidays, the direct expansion unit is used to transport air to a local area of ​​the cigarette factory. This combination method can reasonably configure the specifications and functions of the combined air conditioning unit and the direct expansion unit according to the needs of different time periods and regions, thereby optimizing equipment investment, reducing initial investment costs, and reducing energy consumption;

[0028] (2) By connecting the filter assembly at the air inlet of the surface cooling section, progressive filtration can be achieved when the air passes through the filter plates with increasing mesh sizes. The filter plates with lower mesh sizes can intercept larger particulate impurities, such as dust and hair. As the airflow continues to move forward, the filter plates with higher mesh sizes can intercept smaller particles, such as fine dust and microorganisms. This progressive filtration method can improve the overall filtration efficiency and ensure that the air passing through the surface cooling section is cleaner. When the filter plates need to be cleaned, the horizontal plate can be pulled out by hand to slide each filter plate out from the corresponding sliding installation port. The structure is simple and the operation is convenient.

[0029] (3) Through intelligent automatic control components, the temperature, humidity, air quality and pressure of the air can be monitored and controlled in real time, achieving coordinated adjustment of equipment and improving the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the surface cooling section of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the direct expansion cooling section of the present invention;

[0033] Figure 4 is a schematic structural diagram of the filter assembly of the present invention;

[0034] Figure 5 is a top view of the filter assembly of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the electromagnetic adsorption unit of the present invention;

[0036] Figure 7 It is a schematic diagram of the internal structure of the condensate recovery tank of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the inclined water guide plate of the present invention.

[0038] Among them, 1-combination air conditioning unit, 10-surface cooling section, 100-surface cooler, 101-water retaining plate, 102-surface cooling water retaining area, 103-first electric valve, 104-second electric valve, 11-steam heating section, 110-steam heater, 12-steam humidification section, 120-steam humidifier, 121-humidity sensor, 13-branch duct, 15-filter assembly, 150-sliding installation port, 151-main frame, 152-filter plate, 153-pull-out horizontal plate, 154-pull-out handle, 16-electromagnetic adsorption unit, 160-metal block, 161-installation concave plate, 162-adsorption concave plate, 163-electromagnetic suction cup, 2-direct expansion fresh air unit , 20-direct expansion cooling section, 200-compressor, 201-first condenser, 202-expansion valve, 203-evaporator, 21-direct expansion condensing and reheating section, 210-second condenser, 211-reheater, 212-condensate drainage device, 213-condensate recovery tank, 214-inclined water guide plate, 215-water guide trough, 216-liquid level sensor, 3-air supply component, 30-air supply fan, 31-Y-type air supply duct, 32-return air duct, 320-filter, 321-check valve, 4-intelligent automatic control component, 40-controller, 41-temperature and humidity sensor, 42-air quality sensor, 43-pressure sensor, 44-operation panel. DETAILED DESCRIPTION

[0039] In order to further understand the content of the present invention, the present invention is described in detail below through examples.

[0040] Example 1: Figure 1 、 2 As shown, an energy-saving direct expansion combined air conditioning unit for a cigarette factory includes a combined air conditioning unit 1, a direct expansion fresh air unit 2, and an air supply component 3;

[0041] The combined air conditioning unit 1 includes a surface cooling section 10, a steam heating section 11 and a steam humidifying section 12 arranged in sequence along the air flow direction. The surface cooling section 10 is provided with a surface cooler 100 and a water baffle 101 installed on the air outlet side of the surface cooler 100. The steam heating section 11 is provided with a steam heater 110. One side of the steam heater 110 is connected to the water outlet pipe of the surface cooler 100. The steam humidifying section 12 is provided with a steam humidifier 120 connected to the other side of the steam heater 110 for real-time monitoring of the humidity of the air. The humidity sensor 121 is configured to measure the humidity of the air conditioner 100, wherein the surface cooler 100, the steam heater 110, the steam humidifier 120, and the humidity sensor 121 all adopt existing technologies. For example, the surface cooler 100 adopts a copper tube aluminum fin surface cooler, the steam heater 110 adopts a steam heater of model DZL4-1.0 / 115 / 90-Q, the steam humidifier 120 adopts an electrode steam humidifier of model SDJ-60, and the humidity sensor 121 adopts a HUMIREL humidity sensor.

[0042] like Figure 3 As shown, the direct expansion fresh air unit 2 includes a direct expansion cooling section 20 connected to the surface cooling section 10, and a direct expansion condensation reheating section 21. The direct expansion cooling section 20 is provided with a compressor 200, a first condenser 201, an expansion valve 202 and an evaporator 203 connected in sequence. The evaporator 203 is connected to the compressor 200 through a connecting pipe. The direct expansion condensation reheating section 21 is provided with a second condenser 210 and a reheater 211 connected to the second condenser 210. The first condenser 201 and the second condenser 210 are connected to a condensate drainage device 21 for collecting condensed water. 2, wherein the compressor 200, the first condenser 201, the expansion valve 202, the evaporator 203, the second condenser 210, the reheater 211 and the condensate drainage device 212 all adopt existing technologies. For example, the compressor 200 adopts a piston compressor, the first condenser 201 and the second condenser 210 both adopt shell and tube condensers, the expansion valve 202 adopts an automatically driven expansion valve, the evaporator 203 adopts a direct evaporator, the reheater 211 adopts a directly heated reheater, and the condensate drainage device 212 adopts a BEKO condensate drainage device;

[0043] The air supply assembly 3 includes a blower 30 connected to the steam humidification section 12 and the direct expansion condensation reheat section 21, and a Y-shaped air supply duct 31 connected to the blower 30. One of the two free ends of the Y-shaped air supply duct 31 is used to transport air to the entire area of ​​the cigarette factory, and the other end is used to transport air to a local area of ​​the cigarette factory. The Y-shaped air supply duct 31 is connected to the compressor 200 and the steam heater 110 respectively through a return air duct 32. The surface cooler 100 is connected to the steam heater 110 and the compressor 200 respectively through a branch air duct 13. The blower 30 adopts existing technology, for example, an existing positive pressure blower can be used.

[0044] Three surface cooling water retaining areas 102 are sequentially provided in the surface cooling section 10 along the direction of air flow, and a surface cooler 100 is provided between each surface cooling water retaining area 102. Two adjacent surface coolers 100 are connected and a first electric valve 103 is provided at the connection point. Each surface cooler 100 is connected to the steam heater 110 and the compressor 200 and a second electric valve 104 is provided at the connection point. The first electric valve 103 and the second electric valve 104 both adopt existing technology, for example, a DWPD type electric regulating valve is adopted. Several surface cooling water retaining areas 102 are sequentially provided along the direction of air flow, and the air flow can undergo multiple condensation processes. When the air passes through the first surface cooler 100, the temperature begins to drop and the water vapor therein begins to condense. When passing through the next surface cooler 100, more water vapor can be condensed due to further temperature drop. This gradual cooling and condensing process can improve the condensation efficiency of water vapor in the airflow. Compared with the case where the airflow passes through the surface cooler 100 only once, more water vapor can be converted into condensed water and separated, so the humidity of the air can be controlled more accurately, which is more in line with the production requirements of the cigarette factory. Two adjacent surface coolers 100 are connected by a first electric valve 103. At the same time, each surface cooler 100 is connected to the steam heater 110 and the compressor 200 by a second electric valve 104. On the one hand, the faulty surface cooler 100 can be isolated from the system by closing the corresponding electric valve without affecting the normal operation of other surface coolers 100. On the other hand, the working status of different numbers of surface coolers 100 can be flexibly controlled according to actual humidity requirements to avoid unnecessary energy consumption.

[0045] The first condenser 201 and the second condenser 210 are provided with heat dissipation fins on their outer sides. The heat dissipation fins are coated with a heat dissipation enhancement coating, which is a nano-ceramic heat dissipation coating, to improve the heat dissipation efficiency of the condenser and reduce the energy consumption of the compressor 200.

[0046] like Figure 7 、 8 As shown, the condensed water drainage device 212 is connected to the condensed water recovery tank 213. Two downwardly inclined water guide plates 214 are symmetrically provided in the condensed water recovery tank 213 and located at the water inlet. The inclined water guide plates 214 are provided with 6 mutually parallel water guide grooves 215. The bottom of the inclined water guide plates 214 is provided with a liquid level sensor 216. The condensed water generated during the operation of the first condenser 201 and the second condenser 210 is collected by the condensed water drainage device 212 to prevent the condensed water from accumulating in the first condenser 201 and the second condenser 210. The collected condensed water will flow into the condensed water recovery tank 213. At this time, the condensed water will be orderly guided to the bottom through the various water guide grooves 215 on the inclined water guide plates 214, thereby improving the accuracy and efficiency of condensed water collection. The liquid level sensor 216 adopts the existing technology, for example, a liquid level sensor with a model number of GRLM-70 can be used.

[0047] The return air duct 32 is provided with a filter 320 and a check valve 321. Through the return air duct 32, a portion of the air that has been processed and circulated within the cigarette factory can be reintroduced into the combined air conditioning unit 1 and the direct expansion fresh air unit 2. This reduces the energy required by the combined air conditioning unit 1 and the direct expansion fresh air unit 2 to process the fresh air, thereby achieving energy conservation. Furthermore, the return air duct 32 helps maintain pressure balance within the entire system. It ensures that the air pressure in each area remains relatively stable during the air transportation and circulation process, avoiding problems such as excessive pressure differences that affect the normal flow of air or cause air leakage. The main function of the check valve 321 is to prevent airflow backflow and ensure that air can only flow in the return air duct 32 in a predetermined direction. The filter 320 intercepts particulate matter such as dust and impurities in the return air. Both the filter 320 and the check valve 321 utilize existing technologies. For example, the filter 320 can be a Y-type filter, and the check valve 321 can be an NH7K2F-16P vacuum check valve.

[0048] Example 2: This example describes an operating method of an energy-saving direct expansion combined air conditioning unit for a cigarette factory. The method is based on the energy-saving direct expansion combined air conditioning unit for a cigarette factory in Example 1 and includes the following steps:

[0049] S1. On a normal working day, fresh air passes through several surface cooling water retaining areas 102 in sequence and is progressively condensed by the surface coolers 100 in each surface cooling water retaining area 102, and the water droplets generated by the condensation are blocked by the water retaining plate 101;

[0050] S2. The condensed air enters the steam heating section 11 and is heated by the steam heater 110 to adjust the air temperature. The temperature-adjusted air enters the steam humidification section 12 and is increased in humidity by the steam humidifier 120. At the same time, the humidity is monitored in real time by the humidity sensor 121.

[0051] S3. The humidified air is extracted by the blower 30 and introduced into the entire area of ​​the cigarette factory through the Y-shaped air supply duct 31, providing clean and stable airflow to the entire area of ​​the cigarette factory;

[0052] S4. During holidays, the fresh air passes through several surface cooling water retaining areas 102 in sequence, and is gradually condensed by the surface coolers 100 in each surface cooling water retaining area 102, and the water droplets generated by the condensation are blocked by the water retaining plate 101;

[0053] S5. The air after condensation enters the direct expansion cooling section 20 and first exchanges heat with the evaporator 203. At this time, the refrigerant in the evaporator 203 is in a low-pressure and low-temperature state. The heat of the air is absorbed by the refrigerant. The compressor 200 continues to operate to maintain the circulation of the refrigerant in the system, compressing the refrigerant gas that has absorbed heat in the evaporator 203 into a high-temperature and high-pressure gas. The high-temperature and high-pressure gaseous refrigerant enters the first condenser 201 and exchanges heat with the external environment through the heat dissipation fins to dissipate the heat. The refrigerant gas condenses into liquid. The liquid refrigerant passes through the expansion valve 202. The expansion valve 202 plays a role in throttling and reducing the pressure and temperature of the liquid refrigerant, which then returns to the evaporator 203 to prepare for the next round of heat exchange cycle. The air cooled by the evaporator 203 enters the direct expansion condensation reheat section 21.

[0054] S6. In the direct expansion condensation reheat section 21, the reheater 211 uses the heat of the refrigerant to reheat the air, adjusting the air temperature to a temperature suitable for the environment inside the cigarette factory. The air is then drawn out through the blower 30 and passed into a local area of ​​the cigarette factory through the Y-shaped air supply duct 31.

[0055] Example 3: This example differs from Example 1 in that:

[0056] like Figure 4 、 5 When the filter panels 152 need to be cleaned, the horizontal plate 153 can be pulled out by hand to make each filter panel 152 slide out from the corresponding sliding mounting opening 150. The structure is simple and the operation is convenient.

[0057] like Figure 6As shown, an electromagnetic adsorption unit 16 is provided at the connection between the pull-out horizontal plate 153 and the upper end of each filter plate 151. The electromagnetic adsorption unit 16 includes a mounting concave disc 161 provided at the upper end of each filter plate 151 and provided with a metal block 160 inside, an adsorption concave disc 162 provided at the bottom end of the pull-out horizontal plate 152 and corresponding to the adsorption concave disc 161, and an electromagnetic suction cup 163 provided in the adsorption concave disc 162. Since the upper ends of each filter plate 151 are respectively connected to the pull-out horizontal plate 153 through the electromagnetic adsorption unit 16, it is possible to realize the overall batch installation and removal of all filter plates 151, and to perform single filter plate 151 removal by energizing the electromagnetic adsorption unit 16. 1 can be installed and removed, and precise maintenance operations can be performed on a single filter plate without affecting the overall filtering function, thereby increasing the flexibility of operation. When the electromagnetic adsorption unit 16 is in use, the electromagnetic suction cup 163 is energized. At this time, the metal block 160 is adsorbed and fixed under the action of the electromagnetic suction force of the electromagnetic suction cup 163, so that the corresponding filter plate 151 is adsorbed and can be pulled out. After the electromagnetic suction cup 163 is powered off, the electromagnetic suction force disappears, and the filter plate 151 will not be pulled out as the horizontal plate 153 is pulled out, thereby having high reliability. Among them, the electromagnetic suction cup 163 adopts existing technology, for example, the electromagnetic suction cup 163 can adopt the German SAV electromagnetic suction cup;

[0058] A pull-out handle 154 is provided at the upper end of the pull-out horizontal plate 153 , and the pull-out handle 154 facilitates the pull-out operation of the pull-out horizontal plate 153 .

[0059] Example 4: This example differs from Example 2 in that:

[0060] In step S1, before the fresh air passes through the several surface cooling water retaining areas 102 in sequence, progressive filtration can be achieved when the air passes through the filter plates 152 with increasing mesh sizes. The filter plates 152 with lower mesh sizes can intercept larger particulate impurities, such as dust and hair. As the airflow continues to move forward, the filter plates 152 with higher mesh sizes can intercept smaller particles, such as fine dust and microorganisms. When the electromagnetic adsorption unit 16 is in use, the electromagnetic suction cup 163 is energized. At this time, the metal block 160 is adsorbed and fixed under the action of the electromagnetic suction force of the electromagnetic suction cup 163, so that the corresponding filter plate 151 is adsorbed and can be pulled out. After the electromagnetic suction cup 163 is powered off, the electromagnetic suction force disappears, and the filter plate 151 will not be pulled out as the horizontal plate 153 is pulled out.

[0061] In step S4, before the fresh air passes through several surface cooling water retaining areas 102 in sequence, progressive filtration can be achieved when the air passes through each filter plate 152 with increasing mesh size. The filter plate 152 with a lower mesh size can intercept larger particulate impurities, such as dust and hair. As the airflow continues to move forward, the filter plate 152 with a higher mesh size can intercept smaller particles, such as fine dust and microorganisms.

[0062] Example 5: This example differs from Example 3 in that:

[0063] like Figure 1 As shown, it also includes an intelligent automatic control component 4, which includes a controller 40, a temperature and humidity sensor 41 provided at the air inlet of the surface cooling section 10 and the air outlet of the Y-shaped air supply duct 31, an air quality sensor 42 provided at the air inlet of the surface cooling section 10, a pressure sensor 43 provided at the inlet and outlet of the compressor 200 and the Y-shaped air supply duct 31, and an operation panel 44 connected to the controller 40. The temperature and humidity sensors 41 provided at the air inlet of the surface cooling section 10 and the air outlet of the Y-shaped air supply duct 31 continuously collect temperature and humidity data of the air. The temperature and humidity data collected at the air inlet can reflect the initial state of the air entering the combined air-conditioning unit 1, while the temperature and humidity data at the air outlet represent the state of the air that is about to be transported to the cigarette factory area after processing. The quality of the air entering the surface cooling section 10 is monitored by the air quality sensor 42, which helps to determine whether the air entering the surface cooling section 10 requires special Processing or whether it may have adverse effects on internal components, the pressure data is measured in real time by the pressure sensor 43. The pressure data of the inlet and outlet of the compressor 200 is very important for judging the working status of the compressor 200, whether there is blockage or leakage, etc. The pressure data at the Y-shaped air supply duct 31 is helpful to understand the resistance during the air supply process and the efficiency of air delivery. The controller 40 receives data from various sensors and analyzes these data according to preset programs and algorithms. After the controller 40 makes a decision based on the data analysis, it adjusts the relevant equipment through the operation panel 44. The intelligent automatic control component 4 can also realize coordinated adjustment between devices, with a high degree of automation. Among them, the controller 40, the temperature and humidity sensor 41, the air quality sensor 42, the pressure sensor 43 and the operation panel 44 all adopt existing technologies. For example, the controller 40 adopts FX2C PLC controller, the temperature and humidity sensor 41 adopts the AHT40 temperature and humidity sensor, the air quality sensor 42 adopts the air quality sensor model ENS160, the pressure sensor 43 adopts the pressure sensor model MPX2010, and the operation panel 44 adopts the high-performance control panel module model SUE3000 1VCR007346.

[0064] Example 6: This example differs from Example 4 in that it further includes step S7;

[0065] S7. The temperature and humidity sensors 41 provided at the air inlet of the surface cooling section 10 and the air outlet of the Y-shaped air supply duct 31 continuously collect the temperature and humidity data of the air. The air quality entering the surface cooling section 10 is monitored by the air quality sensor 42. The pressure data is measured in real time by the pressure sensor 43. The controller 40 receives the data from each sensor and analyzes the data according to the preset program and algorithm. After the controller 40 makes a decision based on the data analysis, it adjusts the relevant equipment through the operation panel 44.

Claims

1. An energy-saving direct expansion combined air conditioning unit for a cigarette factory, characterized in that: It includes a combined air conditioning unit (1), a direct expansion fresh air unit (2), and an air supply component (3); The combined air-conditioning unit (1) comprises a surface cooling section (10), a steam heating section (11), and a steam humidifying section (12) sequentially arranged along the air flow direction; the surface cooling section (10) is provided with a surface cooler (100) and a water baffle (101) installed on the air outlet side of the surface cooler (100); the steam heating section (11) is provided with a steam heater (110); one side of the steam heater (110) is connected to the water outlet pipe of the surface cooler (100); the steam humidifying section (12) is provided with a steam humidifier (120) connected to the other side of the steam heater (110), and a humidity sensor (121) for real-time monitoring of air humidity; The direct expansion fresh air unit (2) comprises a direct expansion cooling section (20) connected to the surface cooling section (10) and a direct expansion condensation reheating section (21); the direct expansion cooling section (20) is provided with a compressor (200), a first condenser (201), an expansion valve (202), and an evaporator (203) connected in sequence; the evaporator (203) is connected to the compressor (200) via a connecting pipe; the direct expansion condensation reheating section (21) is provided with a second condenser (210) and a reheater (211) connected to the second condenser (210); the first condenser (201) and the second condenser (210) are connected to a condensate drainage device (212) for collecting condensate; The air supply assembly (3) includes an air supply fan (30) connected to the steam humidification section (12) and the direct expansion condensation reheating section (21), and a Y-shaped air supply duct (31) connected to the air supply fan (30). One of the two free ends of the Y-shaped air supply duct (31) is used for air transportation in the entire area of ​​the cigarette factory, and the other end is connected to air transportation in a local area of ​​the cigarette factory. The Y-shaped air supply duct (31) is connected to the compressor (200) and the steam heater (110) respectively through a return air duct (32). The surface cooler (100) is connected to the steam heater (110) and the compressor (200) respectively through a branch air duct (13). On regular working days, the combined air conditioning unit (1) is used to transport air to the entire area of ​​the cigarette factory. On holidays, the direct expansion fresh air unit (2) is used to transport air to a local area of ​​the cigarette factory.

2. The energy-saving direct expansion combined air-conditioning unit for cigarette factories according to claim 1, characterized in that: The air inlet of the surface cooling section (10) is connected to a filter assembly (15), and the filter assembly (15) comprises a main frame (151) having a plurality of sliding mounting openings (150) distributed along the airflow direction at the upper end, a plurality of filter plates (152) slidably connected to the sliding mounting openings (150) in a one-to-one correspondence, and a pull-out horizontal plate (153) connected to the upper end of each of the filter plates (152), wherein the mesh size of each of the filter plates (152) distributed along the airflow direction increases sequentially.

3. The energy-saving direct expansion combined air-conditioning unit for cigarette factories according to claim 2, characterized in that: An electromagnetic adsorption unit (16) is provided at the connection between the pull-out horizontal plate (153) and the upper end of each filter plate (152), and the electromagnetic adsorption unit (16) includes a mounting concave disc (161) provided at the upper end of each filter plate (152) and provided with a metal block (160) inside, an adsorption concave disc (162) provided at the bottom end of the pull-out horizontal plate (153) and corresponding one-to-one to the mounting concave disc (161), and an electromagnetic suction cup (163) provided inside the adsorption concave disc (162).

4. The energy-saving direct expansion combined air-conditioning unit for cigarette factories according to claim 2, characterized in that: A pull-out handle (154) is provided at the upper end of the pull-out horizontal plate (153).

5. The energy-saving direct expansion combined air-conditioning unit for cigarette factories according to claim 1, characterized in that: The invention also includes an intelligent automatic control component (4), which includes a controller (40), a temperature and humidity sensor (41) provided at the air inlet of the surface cooling section (10) and the air outlet of the Y-shaped air supply duct (31), an air quality sensor (42) provided at the air inlet of the surface cooling section (10), a pressure sensor (43) provided at the inlet and outlet of the compressor (200) and the Y-shaped air supply duct (31), and an operation panel (44) connected to the controller (40).

6. The energy-saving direct expansion combined air-conditioning unit for cigarette factories according to claim 1, characterized in that: A plurality of surface cooling water retaining areas (102) are sequentially provided in the surface cooling section (10) along the air flow direction, a surface cooler (100) is provided between each of the surface cooling water retaining areas (102), two adjacent surface coolers (100) are connected, and a first electric valve (103) is provided at the connection point, and each surface cooler (100) is connected to the steam heater (110) and the compressor (200), and a second electric valve (104) is provided at the connection point.

7. The energy-saving direct expansion combined air conditioning unit for cigarette factories according to claim 1, characterized in that: Heat dissipation fins are provided on the outside of the first condenser (201) and the second condenser (210), and the surfaces of the heat dissipation fins are coated with a heat dissipation enhancement coating, which is a nano-ceramic heat dissipation coating.

8. The energy-saving direct expansion combined air-conditioning unit for cigarette factories according to claim 1, characterized in that: The condensate water drainage device (212) is connected to a condensate water recovery tank (213), and two downwardly inclined water guide plates (214) are symmetrically provided in the condensate water recovery tank (213) and located at the water inlet. The inclined water guide plates (214) are provided with a plurality of mutually parallel water guide grooves (215), and a liquid level sensor (216) is provided at the bottom end of the inclined water guide plates (214).

9. The energy-saving direct expansion combined air-conditioning unit for cigarette factories according to claim 1, characterized in that: The return air duct (32) is provided with a filter (320) and a check valve (321).

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