Energy-saving direct-expansion combined air conditioning unit for cigarette factory

Abstract

The invention provides an energy-saving direct-expansion combined air conditioning unit for a cigarette factory, and belongs to the technical field of air conditioning equipment. Comprising a combined air conditioning unit, a direct expansion type fresh air unit and an air supply assembly. A direct expansion type unit is additionally arranged in a traditional combined air conditioner, the combined air conditioner unit is used for conveying air to the whole area of a cigarette factory in conventional workdays, the direct expansion type unit is used for conveying air to the local area of the cigarette factory in holidays and festivals, and according to the combination mode, according to the requirements of different time periods and areas, the combined air conditioner unit can be used for conveying air to the whole area of the cigarette factory. And the specifications and functions of the combined air conditioning unit and the direct expansion unit are reasonably configured, so that the equipment investment is optimized, and the energy consumption is reduced while the initial investment cost is reduced.

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 production site for tobacco products, cigarette factories have very strict requirements for the temperature and humidity control of the environment. During the cigarette production process, the quality of tobacco leaves and the taste of cigarettes are closely related to the temperature and humidity of the production environment. Therefore, cigarette factories need to use air conditioning systems to maintain a stable production environment.

[0003] Traditional cigarette factory air conditioning systems usually use combined air conditioning units, which 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 a local area, it will cause energy waste because the operating efficiency of the large system will decrease under the needs of a small area 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-mentioned problems, the present invention provides an energy-saving direct expansion combined air-conditioning unit for 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 comprises 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 comprises a direct expansion cooling section connected to the surface cooling section and a direct expansion condensation reheat section, wherein 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, and the first condenser and the second condenser are connected with a condensation water drainage device for collecting condensation water;

[0009] The air supply assembly includes an air supply fan connected to the steam humidification section and the direct expansion condensation reheat section, and a Y-shaped air supply duct connected to the air supply fan. 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 connected to 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 a plurality of sliding mounting openings distributed along the airflow direction at the upper end, a plurality of filter plates slidably 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 sizes of each of the filter plates distributed along the airflow direction increase 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 particle 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 plate needs to be cleaned, just pull the horizontal plate by hand to make each filter plate slide out from the corresponding sliding installation port. The structure is simple and easy to operate.

[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 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 can realize the overall batch installation and removal of all filter plates, and can also install and remove a single filter plate by turning on or off the electromagnetic adsorption unit. It can perform precise maintenance operations on a single filter plate without affecting the overall filtering function, 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 with the pulling of the pull-out horizontal plate, 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 arranged at the air inlet of the surface cooling section and the air outlet of the Y-shaped air supply duct, an air quality sensor arranged at the air inlet of the surface cooling section, a pressure sensor arranged at the inlet and outlet of the compressor and the Y-shaped air supply duct, and an operation panel connected to the controller.

[0017] Description: The temperature and humidity sensors installed at the air inlet of the surface cooling section and the air outlet of the Y-shaped air supply duct continuously collect the 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, while the temperature and humidity data at the air outlet represent the state of the air that will be transported to the cigarette factory area after treatment. The air quality sensor monitors the air quality entering the surface cooling section, which helps to determine whether the air entering the surface cooling section requires special treatment or whether it may have adverse effects on internal components. The pressure sensor measures the pressure data in real time. The pressure data at the inlet and outlet of the compressor is very important for judging the working state of the compressor, whether there is blockage or leakage, etc. The pressure data at the Y-shaped air supply duct helps to understand the resistance during the air supply process and the efficiency of air delivery. The controller receives data from each sensor and analyzes these data according to the preset program and algorithm. When the controller makes a decision based on the data analysis, it will adjust the relevant equipment through the operation panel. The intelligent automatic control component can also realize the coordinated adjustment between equipment, with a high degree of automation.

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

[0019] Description: Several surface cooling water retaining areas are arranged in sequence along the direction of air flow, and the air flow can undergo multiple condensation processes. When the air passes through the first surface cooler, the temperature begins to decrease, and the water vapor therein begins to condense. When passing through the next surface cooler, more water vapor can be condensed due to further temperature reduction. This gradual cooling and condensation process can improve the condensation efficiency of water vapor in the air flow. Compared with the case where the air passes through the surface cooler only once, more water vapor can be converted into condensed water and separated. The humidity of the air can be controlled more accurately, and the level more in line with the production requirements of the cigarette factory can be achieved. 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 by 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 outer sides 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 downwardly inclined water guide plates are symmetrically arranged 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: Through the return air duct, 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, 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 beneficial effects of the present invention are:

[0027] (1) When the energy-saving direct expansion combined air conditioning unit for a cigarette factory of the present invention is used, a direct expansion unit is added to a traditional combined air conditioner. On normal working days, the combined air conditioning unit is used to transport air to the entire area of ​​the cigarette factory. 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 the equipment investment, reducing the initial investment cost, 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 numbers. The filter plates with lower mesh numbers can intercept larger particle 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, the horizontal plate can be pulled out by hand to slide each filter plate out of the corresponding sliding installation opening. The structure is simple and the operation is convenient.

[0029] (3) Intelligent automatic control components can monitor and control the temperature, humidity, air quality and pressure of the air in real time, realize coordinated adjustment of equipment and improve 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 It 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-combined 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 disc, 162-adsorption concave disc, 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 condensation reheat section, 210-second condenser, 211-reheater, 212-condensate drainage device, 213-condensate recovery tank, 214-inclined water guide plate, 215-water guide groove, 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 comprises 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 comprises a cooling section 10, a steam heating section 11 and a steam humidifying section 12 which are arranged in sequence along the air flow direction. The cooling section 10 is provided with a cooling device 100 and a water baffle 101 installed on the air outlet side of the cooling device 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 cooling device 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 steam humidifier 120 for real-time monitoring of air humidity. The humidity sensor 121 of the temperature range of 100° to 100° is used, wherein the cooler 100, the steam heater 110, the steam humidifier 120 and the humidity sensor 121 all adopt the existing technology. For example, the cooler 100 adopts a copper tube aluminum fin 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 which are 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 with a condensation water 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 the existing technology, 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 automatic drive expansion valve, the evaporator 203 adopts a direct evaporator, the reheater 211 adopts a direct heating reheater, and the condensate drainage device 212 adopts a BEKO condensate drainage device;

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

[0044] Three surface cooling water retaining areas 102 are sequentially arranged in the surface cooling section 10 along the airflow direction, a surface cooler 100 is arranged between each surface cooling water retaining area 102, two adjacent surface coolers 100 are connected and a first electric valve 103 is arranged at the connection, each surface cooler 100 is connected to the steam heater 110 and the compressor 200 and a second electric valve 104 is arranged at the connection, wherein the first electric valve 103 and the second electric valve 104 both adopt the existing technology, for example, a DWPD type electric regulating valve is adopted, and several surface cooling water retaining areas 102 are sequentially arranged along the airflow direction, the airflow can undergo multiple condensation processes, when the air passes through the first surface cooler 100, the temperature begins to decrease, and the water vapor therein begins to condense, when passing through the next surface cooler 100, more water vapor can be condensed due to the further decrease in temperature 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, and 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 through the first electric valve 103. At the same time, each surface cooler 100 is connected to the steam heater 110 and the compressor 200 through the 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 the 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 surfaces of 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 condensate drainage device 212 is connected to a condensate recovery tank 213, and two downwardly inclined water guide plates 214 are symmetrically arranged in the condensate recovery tank 213 and located at the water inlet, and six mutually parallel water guide grooves 215 are arranged on the inclined water guide plate 214, and a liquid level sensor 216 is arranged at the bottom of the inclined water guide plate 214. The condensate generated during the operation of the first condenser 201 and the second condenser 210 is collected by the condensate drainage device 212 to prevent the condensate from accumulating in the first condenser 201 and the second condenser 210. The collected condensate will flow into the condensate recovery tank 213, and at this time, the condensate will be orderly guided to the bottom through the various water guide grooves 215 on the inclined water guide plate 214, thereby improving the accuracy and efficiency of condensate collection, wherein the liquid level sensor 216 adopts the existing technology, for example, a liquid level sensor with a model of GRLM-70 can be adopted;

[0047] A filter 320 and a check valve 321 are provided on the return air duct 32. Part of the air that has been processed and circulated in the cigarette factory can be reintroduced into the combined air conditioning unit 1 and the direct expansion fresh air unit 2 through the return air duct 32, which can reduce the energy required for the combined air conditioning unit 1 and the direct expansion fresh air unit 2 to process the new air, thereby achieving the purpose of energy saving. At the same time, the return air duct 32 helps to maintain the pressure balance in the entire system. It ensures that the air pressure in each area remains relatively stable during the transportation and circulation of air, avoiding problems such as excessive pressure difference affecting the normal flow of air or causing air leakage. The main function of the check valve 321 is to prevent air flow backflow, ensuring that the air can only flow in the return air duct 32 in a predetermined direction. The filter 320 can intercept particulate matter such as dust and impurities in the return air. Among them, the filter 320 and the check valve 321 both adopt existing technologies. For example, the filter 320 can adopt a Y-type filter, and the check valve 321 can adopt an NH7K2F-16P vacuum check valve.

[0048] Embodiment 2: This embodiment records a working method of an energy-saving direct expansion type combined air conditioning unit for a cigarette factory, based on an energy-saving direct expansion type combined air conditioning unit for a cigarette factory in Embodiment 1, comprising 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 air after condensation enters the steam heating section 11, and is heated by the steam heater 110 to adjust the air temperature. The air after temperature adjustment enters the steam humidification section 12, and the air humidity is increased by the steam humidifier 120. At the same time, it 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 whole area of ​​the cigarette factory through the Y-shaped air supply duct 31, providing clean and stable airflow for the whole 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, and 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, and compresses the refrigerant gas after absorbing 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, exchanges heat with the external environment through the heat dissipation fins, and dissipates the heat. The refrigerant gas is condensed into a liquid state, and the liquid refrigerant passes through the expansion valve 202. The expansion valve 202 plays a role in throttling and reducing pressure, so that the pressure and temperature of the liquid refrigerant are reduced, and it returns to the evaporator 203 again to prepare for the next round of heat exchange cycle, and the air cooled by the evaporator 203 enters the direct expansion condensation reheating 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, adjusts the air temperature to a temperature suitable for the environment inside the cigarette factory, and draws it out through the blower 30 and passes it into a local area of ​​the cigarette factory through the Y-shaped air supply duct 31.

[0055] Embodiment 3: This embodiment differs from Embodiment 1 in that:

[0056] like Figure 4 , 5 As shown, a filter assembly 15 is connected to the air inlet of the surface cooling section 10. The filter assembly 15 includes a main frame 151 with 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 filter plate 152. The mesh numbers of each filter plate 152 distributed along the airflow direction increase successively. When the air passes through each filter plate 152 with a mesh number increasing successively, progressive filtering can be achieved. The filter plates 152 with a lower mesh number can intercept larger particle impurities, such as dust and hair. As the airflow continues to move forward, the filter plates 152 with a higher mesh number can intercept smaller particles, such as fine dust and microorganisms. This progressive filtering method can improve the overall filtering efficiency and ensure that the air passing through the surface cooling section is cleaner. When the filter plates 152 need to be cleaned, the horizontal plate 153 can be pulled out by hand to make each filter plate 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 one by one, 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 powering on or off 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, which increases 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 can be adsorbed and 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 with the pulling of the horizontal plate 153, which has high reliability. Among them, the electromagnetic suction cup 163 adopts the 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] Embodiment 4: This embodiment differs from Embodiment 2 in that:

[0060] In step S1, 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 the filter plates 152 with increasing mesh numbers. The filter plates 152 with lower mesh numbers can intercept larger particle impurities, such as dust and hair. As the airflow continues to move forward, the filter plates 152 with higher mesh numbers 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 can be adsorbed and drawn out. After the electromagnetic suction cup 163 is powered off, the electromagnetic suction force disappears, and the filter plate 151 will not be drawn 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 successively increasing mesh numbers. The filter plate 152 with a lower mesh number 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 number can intercept smaller particles, such as fine dust and microorganisms.

[0062] Embodiment 5: This embodiment differs from Embodiment 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 arranged 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 arranged at the air inlet of the surface cooling section 10, a pressure sensor 43 arranged 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 arranged 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, and 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 being processed. The air quality sensor 42 monitors the quality of the air entering the surface cooling section 10, which helps to determine whether the air entering the surface cooling section 10 needs special Processing or whether it may have adverse effects on internal components, the pressure data is measured in real time through the pressure sensor 43. The pressure data of the inlet and outlet of the compressor 200 is very important for judging the working state 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. When the controller 40 makes a decision based on the data analysis, it will adjust 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 ENS160 air quality sensor, the pressure sensor 43 adopts the MPX2010 pressure sensor, and the operation panel 44 adopts the SUE3000 1VCR007346 high-performance control panel module.

[0064] Embodiment 6: This embodiment differs from Embodiment 4 in that: it also 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, monitor the quality of the air entering the surface cooling section 10 through the air quality sensor 42, measure the pressure data in real time through the pressure sensor 43, receive the data from each sensor through the controller 40, analyze the data according to the preset program and algorithm, and when the controller 40 makes a decision based on the data analysis, it will adjust 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 comprises 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) which are 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 reheat 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 reheat 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) comprises an air supply fan (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 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), and the surface cooler (100) is connected to the steam heater (110) and the compressor (200) respectively through a branch air duct (13).

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), the filter assembly (15) comprising 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 sizes of the filter plates (152) distributed along the airflow direction increase 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 (151), and the electromagnetic adsorption unit (16) comprises a mounting recessed plate (161) provided at the upper end of each filter plate (151) and provided with a metal block (160) inside, an adsorption recessed plate (162) provided at the bottom end of the pull-out horizontal plate (152) and corresponding one-to-one with the adsorption recessed plate (161), and an electromagnetic suction cup (163) provided inside the adsorption recessed plate (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 comprises an intelligent automatic control component (4), wherein the intelligent automatic control component (4) comprises 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 arranged in the surface cooling section (10) along the air flow direction, a surface cooler (100) is arranged between each of the surface cooling water retaining areas (102), two adjacent surface coolers (100) are connected and a first electric valve (103) is arranged at the connection, and each surface cooler (100) is connected to the steam heater (110) and the compressor (200) and a second electric valve (104) is arranged at the connection.

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 drainage device (212) is connected to a condensate recovery tank (213), and two downwardly inclined water guide plates (214) are symmetrically arranged inside the condensate 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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