Gallery bridge air conditioner based on MOFs dehumidification material and control strategy

Abstract

The invention discloses a lounge bridge air conditioner based on MOFs dehumidification materials and a control strategy. The lounge bridge air conditioner comprises a rotating shaft, and a dehumidification plate A and a dehumidification plate B are assembled at the two ends of the rotating shaft correspondingly; the driver is assembled at the end, away from the dehumidification plate A, of the rotating shaft and used for driving the rotating shaft to rotate; the fan corresponds to the dehumidification plate B and is used for blowing environmental wind; the condensation system is used for transmitting the temperature of cooling water to the dehumidification plate A or the dehumidification plate B; the invention relates to the technical field of special air conditioners. The MOFs dehumidification material serves as a core, an independent dehumidification system is prepared to replace a multi-stage compression type refrigeration system used for dehumidification in traditional equipment, traditional and classical 4-6-stage compression type refrigeration systems are reduced to a two-stage system, the number of devices of the equipment is greatly reduced, the size and weight are optimized in a multiplied efficiency mode, and the energy consumption is reduced. The possibility of bacterium breeding and frosting is reduced through water-free dehumidification, and meanwhile the original energy consumption of the replacement stage is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of special air conditioners, and in particular to an air bridge air conditioner based on MOFs dehumidification materials and a control strategy. Background Art

[0002] Currently, the environmental conditions corresponding to the air bridge air conditioners (aircraft ground air conditioners) under T3 and T4 working conditions are 35°C / 70%RH and 35°C / 80%RH respectively. It is necessary to cool the air in this state to below 2°C. After calculating the parameters of humid air, the latent heats to be processed under T3 and T4 working conditions respectively account for about 60% and 64% of the total heat;

[0003] Refer to Figure 1 , for traditional air bridge air conditioners, the latent heat and sensible heat are processed together by using the multi-stage compression refrigeration method. The low-temperature condensed water is discharged outdoors, and the cold air that meets the requirements is transported to the designated place. On the one hand, condensing and treating the wet load will increase the power consumption, increase the number of heat exchangers for treating air, resulting in huge cold energy losses. On the other hand, problems such as low-temperature frosting, poor drainage, and bacteria breeding need to be considered, and the overall energy efficiency ratio of the machine is low;

[0004] Again, the patent with the Chinese patent application number CN202321834552.3 provides an aircraft air conditioner vehicle without dehumidifying condensate drainage. The drainage holes of the condensate atomizing nozzles in the condensate recovery atomizing system are connected to the outlet of the blower through an air delivery hose, and the liquid inlet holes of the condensate atomizing nozzles are connected to the dehumidifying condensate outlet at the lower end of the refrigeration evaporator through a water pipe. The liquid condensate after condensation and dehumidification is discharged by means of air atomization, enhancing the maneuverability of the aircraft ground air conditioner vehicle and reducing the labor cost during the operation of the aircraft ground air conditioner vehicle. However, this method still uses the condensation dehumidification method, with high power consumption and serious cold energy waste. It only solves the problem of condensate discharge, and still has problems such as complex structure, multi-stage series connection, frosting, and bacteria breeding

[0005] Also, the patent with the Chinese patent application number CN202410605334.5 discloses a modular heat pump humidity regulation device based on an adsorption coating and its control method. By using the refrigeration / heating capacity of the heat pump part, the coating dehumidification heat exchanger is driven to perform periodic switching operations between adsorption dehumidification and desorption regeneration, which can meet the intermittent dehumidification requirements of cave-like occasions. By fully combining the characteristics of the heat pump that can refrigerate and heat, and the adsorption material that cools down for adsorption dehumidification / rises in temperature for desorption regeneration, efficient and economical low-humidity dehumidification can be achieved. However, this method is not applicable to integrated special air conditioners. The air bridge air conditioner is a fresh air system, and the cooling air duct and the heat dissipation air duct cannot be switched with each other, and continuous dehumidification operation cannot be carried out;

[0006] There are also technologies that propose to dehumidify by using a rotating wheel. However, it is obviously not applicable to aircraft ground air conditioners and mobile special air conditioners with strict volume and weight requirements. Moreover, the rotating wheel also needs to introduce an additional regeneration heat source, and the temperature rise caused by regeneration will also cause quite a lot of losses.

[0007] Therefore, the present invention provides an air bridge air conditioner and a control strategy based on MOFs dehumidification materials to solve the above problems. Summary of the Invention

[0008] In view of the deficiencies of the prior art, the present invention provides an air bridge air conditioner and a control strategy based on MOFs dehumidification materials, which solve the above problems.

[0009] To achieve the above objectives, the present invention is realized through the following technical solutions: An air bridge air conditioner based on MOFs dehumidification materials, comprising:

[0010] A rotating shaft, with a dehumidification plate A and a dehumidification plate B respectively assembled at both ends of the rotating shaft;

[0011] A driver, which is assembled at one end of the rotating shaft away from the dehumidification plate A and is used to drive the rotating shaft to rotate;

[0012] A fan, corresponding to the dehumidification plate B, and is used to blow environmental air;

[0013] A condensation system, which is used to transfer the cooling water temperature to the dehumidification plate A or the dehumidification plate B;

[0014] A control system, which is used to automatically send out commands and execute adjustment operations

[0015] Preferably, the water-absorbing parts of the dehumidification plate A and the dehumidification plate B are both made by stacking multiple composite materials and are in a cube structure. Copper tubes are inserted into the water-absorbing parts. Water inlets and outlets are respectively arranged at both ends of the copper tubes, and micro fins are arranged both inside and outside the copper tubes.

[0016] Preferably, the driver includes a gear and an actuator, and the gear is used to transmit the power of the actuator.

[0017] Preferably, the condensation system includes:

[0018] An evaporator, which is used to cool and dry the air. A water receiving tray is fixedly connected to the bottom end of the evaporator;

[0019] A centrifugal fan, which is used to generate an air flow between the dehumidification plate A and the evaporator or between the dehumidification plate B and the evaporator. A water-cooled radiator is arranged at the motor position of the centrifugal fan;

[0020] Water-cooled condenser, a cooling pipeline is arranged between the water-cooled condenser, the copper pipe and the water-cooled radiator, cooling water is arranged inside the cooling pipeline, and the water-cooled radiator is located between the water-cooled condenser and the copper pipe.

[0021] Preferably, a valve is arranged on the cooling pipeline for controlling the flow rate of the cooling water.

[0022] Preferably, a limit snap ring is arranged at one end of the cooling pipeline close to the water inlet of the copper pipe, the connection part between the cooling pipeline and the copper pipe is pressure-sealed through the limit snap ring, the material of the limit snap ring is high-strength alloy, and the outer side of the limit snap ring is wrapped with a silica gel flexible sealing material.

[0023] Preferably, the control system includes:

[0024] A temperature and humidity sensor for detecting the working conditions of the fresh air entering the dehumidification module A and the dehumidification module B;

[0025] A temperature probe for detecting the temperature data of the dehumidification module A and the dehumidification module B;

[0026] A weight sensor for recording the water absorption of the dehumidification module A and the dehumidification module B;

[0027] A main control board for collecting and processing data.

[0028] A control strategy for an air bridge air conditioner based on MOFs dehumidification material is as follows:

[0029] The first step is to obtain the temperature and humidity of each part and the weights of the dehumidification module A and the dehumidification module B;

[0030] The second step is to calculate the difference between the measured value and the preset value and calculate the change rate of each parameter;

[0031] The third step is to automatically regulate the operation of the load according to the detected value and the calculated value

[0032] Beneficial effects

[0033] The present invention provides an air bridge air conditioner based on MOFs dehumidification material and a control strategy. Compared with the prior art, the following beneficial effects are achieved:

[0034] (1) The air bridge air conditioner based on MOFs dehumidification material and the control strategy take the MOFs dehumidification material as the core, prepare a separate dehumidification system to replace the multi-stage compression refrigeration system used for dehumidification in traditional equipment, reduce the traditional classic 4-6 stage compression refrigeration system to a two-stage system, greatly reduce the number of components of the equipment, optimize the volume and weight with double efficiency, and the waterless dehumidification reduces the possibility of bacteria breeding and frosting, and at the same time reduces the original energy consumption of the replaced stages.

[0035] (2) The bridge air conditioner and control strategy based on MOFs dehumidification material collect the heat generated by the centrifugal fan (8) unique to the bridge air conditioner and part of the condensation heat, and use them as the regeneration heat source of the dehumidification system, realizing waste heat utilization, turning waste into treasure, and further reducing energy consumption. Description of the Drawings

[0036] Figure 1 is the schematic diagram of the traditional bridge air conditioner;

[0037] Figure 2 is the schematic diagram of the first embodiment of the present invention;

[0038] Figure 3 is the structural schematic diagram of the dehumidification section A or the dehumidification section of the present invention;

[0039] Figure 4 is the flow chart of the second embodiment of the present invention.

[0040] In the figure, 1 is the rotating shaft; 2 is the dehumidification section A; 3 is the dehumidification section B; 4 is the driver; 5 is the fan; 6 is the evaporator; 7 is the water receiving tray; 8 is the centrifugal fan; 9 is the water-cooled condenser; 10 is the cooling pipeline; 11 is the copper pipe; 12 is the limit snap ring. Detailed Embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1:

[0043] Please refer to Figure 2-3 , a bridge air conditioner based on MOFs dehumidification material, comprising:

[0044] A rotating shaft 1, and a dehumidification section A 2 and a dehumidification section B 3 are respectively assembled at both ends of the rotating shaft 1;

[0045] In this embodiment, the dehumidification section A 2 and the dehumidification section B 3 are independently rotatably connected to the rotating shaft 1;

[0046] A driver 4, which is assembled at one end of the rotating shaft 1 away from the dehumidification section A 2, and is used to drive the rotating shaft 1 to rotate;

[0047] In this embodiment, the driver 4 includes a gear and an actuator. The gear is used to transmit the power of the actuator, and the actuator can be a driving motor. When the driving motor operates, it can transmit the power to the rotating shaft 1 through the gear, thereby driving the rotating shaft 1 to rotate and prompting the dehumidification plate A2 and the dehumidification plate B3 to change positions;

[0048] A fan 5, the fan 5 corresponds to the dehumidification plate B3 and is used to blow environmental air;

[0049] More specifically, the fan 5 is located in front of the dehumidification plate B3. When the fan 5 operates, it can blow the environmental air across the dehumidification plate A2 or the dehumidification plate B3;

[0050] A condensation system for transferring the cooling water temperature to the dehumidification plate A2 or the dehumidification plate B3;

[0051] A control system for automatically sending out commands and performing adjustment operations;

[0052] More specifically, the water-absorbing parts of the dehumidification plate A2 and the dehumidification plate B3 are both made by stacking multiple layers of composite materials and are in a cube structure. Copper tubes 11 are inserted into the water-absorbing parts. Water inlets and outlets are respectively arranged at both ends of the copper tubes 11. Micro fins are arranged both inside and outside the copper tubes 11;

[0053] Here, the composite material is prepared by adding MOFs powder and a binder to glass fiber and then fully stirring and drying. In this embodiment, the cube structure after stacking multiple layers of composite materials is fixed by sheet metal side plates, and finally the dehumidification plate A2 and the dehumidification plate B3 with the required size are formed;

[0054] In summary, when the rotating shaft 1 drives the dehumidification plate A2 and the dehumidification plate B3 to change positions, the water inlet rotates with the dehumidification plate A2 or the dehumidification plate B3. Under the action of pressure, it can "forcefully squeeze" the axial direction of the cooling pipeline 10 into the limit retaining ring 12 on the cooling pipeline 10 to complete the connection and sealing with the water circuit. Similarly, when separating from the cooling pipeline 10, under the action of power, the water inlet pipe of the dehumidification plate A2 or the dehumidification plate B3 "forcefully extrudes" the limit retaining ring 12 to complete the separation. This design avoids the commonly used complex commutation system and monitoring system, and cleverly uses mechanical design to complete the position and function replacement of the dehumidification plate A2 and the dehumidification plate B3, which is reliable and convenient;

[0055] In this embodiment, the condensation system includes:

[0056] An evaporator 6, the evaporator 6 is used to cool and dry the air, and a water receiving tray 7 is fixedly connected to the bottom end of the evaporator 6;

[0057] The centrifugal fan 8 is used to generate an air flow between the dehumidification section A2 and the evaporator 6 or between the dehumidification section B3 and the evaporator 6. A water-cooled radiator is arranged at the motor position of the centrifugal fan 8;

[0058] The water-cooled condenser 9, there is a cooling pipeline 10 arranged between the water-cooled condenser 9, the copper pipe 11 and the water-cooled radiator. Cooling water is arranged inside the cooling pipeline 10, and the water-cooled radiator is located between the water-cooled condenser 9 and the copper pipe 11;

[0059] In this embodiment, the condensing system further includes a compressor, a throttle valve and a sensor that are matched with it.

[0060] More specifically, the cooling water is normal-temperature tap water, and the water temperature does not exceed 30 °C at most;

[0061] In this embodiment, the parameters of the centrifugal fan 8 can generate an air volume of more than 5500 m³ / h under a head higher than 6000 Pa;

[0062] More specifically, a valve is arranged on the cooling pipeline 10 to control the flow rate of the cooling water;

[0063] After testing, the lower the water temperature of the cooling water, the better the heat dissipation. However, considering the high temperature of more than 100 degrees Celsius on the surface of the motor of the centrifugal fan 8, too low a cooling temperature is extremely likely to cause condensation on the motor of the centrifugal fan 8, affecting the safety of the equipment. Therefore, the cooling water heated by the water-cooled condenser 9 is the best choice. When the cooling water flows through the motor of the centrifugal fan 8, the water temperature will rise to 45 - 60 °C, and then be injected into the corresponding copper pipe 11 to transfer the heat to the dehumidification section A2 and then the dehumidification section B3, so that the dehumidification section A2 or the dehumidification section B3 can be quickly heated up;

[0064] More specifically, a limit snap ring 12 is arranged at one end of the cooling pipeline 10 close to the water inlet of the copper pipe 11. The connection between the cooling pipeline 10 and the copper pipe 11 is pressure-sealed through the limit snap ring 12. The material of the limit snap ring 12 is high-strength alloy, and a silicone flexible sealing material is wrapped outside the limit snap ring 12;

[0065] In this embodiment, the control system includes:

[0066] A temperature and humidity sensor, which is used to detect the working conditions of the fresh air entering the dehumidification section A2 and the dehumidification section B3;

[0067] A temperature probe, which is used to detect the temperature data of the dehumidification section A2 and the dehumidification section B3;

[0068] A weight sensor, which is used to record the water absorption of the dehumidification section A2 and the dehumidification section B3;

[0069] A main control board, which is used to collect and process data;

[0070] Furthermore, when the system is working, the ambient temperature and humidity sensor detects the fresh air working condition, the fresh air dehumidification plate A2 or the dehumidification plate B3, the specially made MOFs material with high water absorption performance continuously absorbs the moisture of the incoming air, the weight sensor on the dehumidification plate A2 or the dehumidification plate B3 records the water absorption, and the dehumidified air enters the flow channel, where the temperature and humidity sensor is arranged again to detect the working condition after dehumidification, and finally the dry air enters the evaporator for the last step of cooling, and the air that meets the requirements is sent to the required place to complete the work process. When the weight sensor detects that the water absorption weight reaches the preset value, the driver 4 drives the rotating shaft 1 to rotate, switches the position of the dehumidification plate A2 and the dehumidification plate B3, and switches the position up and down, and connects the regenerated and dried dehumidification plate A2 or dehumidification plate B3 to the system air duct to continue to absorb moisture;

[0071] In more detail, the dehumidification plate A2 or dehumidification plate B3 that has adsorbed a preset value is switched to the lower part, and under the dual effects of hot water and fan 5, desorption and regeneration begin. After the hot water flows through the dehumidification plate A2 or dehumidification plate B3, it enters a special recovery device. When the weight sensor detects that the device has reached the preset value of desorption completion, the lower dehumidification plate A2 or dehumidification plate B3 is rotated a certain angle to deviate. At this time, the module is separated from the desorbed hot water, but the surface still has a high temperature. Under the action of fan 5, the temperature is gradually reduced. In order to avoid absorbing moisture from the cooling air during the cooling process, which causes the adsorption capacity to decrease during actual reversing applications, The duration of the separation phase needs to be determined in combination with the desorption completion time and the adsorption completion time. Specifically, after deviating from the cooling step, the reversal of the dehumidification plate A2 or the dehumidification plate B3 is completed within 30 seconds. The forced convection heat exchange within 30 seconds can ensure that the surface temperature of the dehumidification plate A2 or the dehumidification plate B3 after the desorption is completed drops to close to the ambient temperature, and at the same time will not cause a significant impact on the adsorption capacity after the reversal. It can effectively solve the temperature rise and cold and heat loss caused by the implementation of traditional rotary dehumidification, heat pump reversal and other solutions, or reduce the energy consumption newly introduced in these solutions to offset the temperature rise, killing two birds with one stone, low consumption and high efficiency;

[0072] Embodiment 2:

[0073] See also Figure 4 This embodiment provides a control strategy for a corridor air conditioner based on MOFs dehumidification materials on the basis of the first embodiment, and the steps are as follows:

[0074] The first step is to obtain the temperature and humidity of each part and the weight of the dehumidification block A2 and the dehumidification block B3;

[0075] The second step is to calculate the difference between the measured value and the preset value, and calculate the change rate of each parameter;

[0076] The third step is to automatically adjust the operation of the load based on the detected and calculated values.

[0077] As can be seen from the above, by adopting an advanced PID control method, considering the influence of the change rate on the actual result while performing differential control, and supplemented by advanced sensors and control logic, the smoothness of the switching is ensured, and the problem of poor user experience caused by excessive temperature fluctuations is avoided to the greatest extent;

[0078] More specifically, the beneficial effects of the present invention are as follows:

[0079] 1. With an advanced MOFs moisture absorption material as the core, the traditional multi-stage (4 - 6 stages) air-conditioning system for airbridges is reduced to a two-stage system, greatly reducing the complexity of the system, and decreasing the volume, weight, manufacturing, and maintenance costs of the equipment;

[0080] 2. The dehumidification section A2 and the dehumidification section B3 are used as backups for each other under the action of mechanical transmission. It achieves dehumidification without water and frost, avoiding problems such as icing and bacterial growth, as well as maintenance problems;

[0081] 3. Make full use of the kilowatt-level waste heat generated by the airbridge air conditioner, turning waste into treasure. The waste heat is collected by cooling water and gradually heated. On the one hand, it greatly improves the motor cooling efficiency of the water-cooled condenser 9 and the centrifugal fan 8. On the other hand, the waste heat is used as the heat source for driving the regeneration of the moisture absorption material. Utilizing the particularity of the special air conditioner, the COP of the traditional airbridge air conditioner is increased from 1.9 - 2.3 to above about 4.0, with a promotion rate of 100%;

[0082] 4. Independently control the temperature and humidity of the air under T3 and T4 working conditions. The dehumidification section commutation system designed in the present invention is simple and reliable. Using mechanical commutation seals, it avoids complicated control systems and devices;

[0083] 5. With a precise control strategy, in the regeneration commutation link, comprehensively consider the influence of the regeneration heat and the cooling adsorption on the system. After the desorption is completed, use the environment and the fan 5 to cool down within a preset time, avoiding the temperature rise of the incoming air caused by the regeneration temperature, and at the same time ensuring that the adsorption capacity is not affected too much.

[0084] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0085] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to this process, method, article or device.

[0086] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air conditioner for a covered bridge based on MOFs dehumidification material, characterized in that: Comprising: A rotating shaft (1), with a dehumidifying plate A (2) and a dehumidifying plate B (3) respectively assembled at both ends of the rotating shaft (1); A driver (4), which is assembled at one end of the rotating shaft (1) away from the dehumidifying plate A (2) and is used to drive the rotating shaft (1) to rotate; A fan (5), which corresponds to the dehumidifying plate B (3) and is used to blow environmental air; A condensation system, which is used to transfer the cooling water temperature to the dehumidifying plate A (2) or the dehumidifying plate B (3); A control system, which is used to automatically send out commands and execute adjustment operations.

2. The corridor air conditioner based on MOFs dehumidification material according to claim 1, characterized in that: The water-absorbing parts of the dehumidifying plate A (2) and the dehumidifying plate B (3) are both made by stacking multiple composite materials and are in a cube structure. A copper pipe (11) is inserted into the water-absorbing part. Water inlets and outlets are respectively arranged at both ends of the copper pipe (11), and micro fins are arranged both inside and outside the copper pipe (11).

3. The corridor air conditioner based on MOFs dehumidification material according to claim 1, characterized in that: The driver (4) includes a gear and an actuator, and the gear is used to transmit the power of the actuator.

4. The corridor air conditioner based on MOFs dehumidification material according to claim 1, characterized in that: The condensation system includes: An evaporator (6), which is used to cool and dry the air. A water receiving tray (7) is fixedly connected to the bottom end of the evaporator (6); A centrifugal fan (8), which is used to generate an air flow between the dehumidifying plate A (2) and the evaporator (6) or between the dehumidifying plate B (3) and the evaporator (6). A water-cooled radiator is arranged at the motor position of the centrifugal fan (8); A water-cooled condenser (9), a cooling pipeline (10) is arranged between the water-cooled condenser (9), the copper pipe (11) and the water-cooled radiator. Cooling water is arranged inside the cooling pipeline (10), and the water-cooled radiator is located between the water-cooled condenser (9) and the copper pipe (11).

5. The corridor air conditioner based on MOFs dehumidification material according to claim 4, characterized in that: A valve is arranged on the cooling pipeline (10) to control the flow rate of the cooling water.

6. The corridor air conditioner based on MOFs dehumidification material according to claim 4, characterized in that: A limit snap ring (12) is arranged at one end of the cooling pipeline (10) close to the water inlet of the copper pipe (11). The connection part between the cooling pipeline (10) and the copper pipe (11) is pressure-sealed through the limit snap ring (12). The material of the limit snap ring (12) is a high-strength alloy, and a silica gel flexible sealing material is wrapped outside the limit snap ring (12).

7. The corridor air conditioner based on MOFs dehumidification material according to claim 1, characterized in that: The control system includes: A temperature and humidity sensor, which is used to detect the working conditions of the fresh air entering the dehumidifying plate A (2) and the dehumidifying plate B (3); A temperature probe, which is used to detect the temperature data of the dehumidifying plate A (2) and the dehumidifying plate B (3); A weight sensor, which is used to record the water absorption amounts of the dehumidifying plate A (2) and the dehumidifying plate B (3); A main control board, which is used to collect and process data.

8. A control strategy for a corridor air conditioner based on MOFs dehumidification materials, characterized in that: The steps are as follows: First step, obtain the temperature and humidity of each part and the weights of the dehumidifying plate A (2) and the dehumidifying plate B (3); Second step, calculate the difference between the measured value and the preset value, and calculate the change rates of each parameter; Third step, automatically regulate the operation of the load according to the detected values and the calculated values.

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