Energy efficiency management system and energy efficiency management method based on central air conditioning

Abstract

The present invention discloses an energy efficiency management system and an energy efficiency management method based on central air conditioning, wherein the energy efficiency management system includes a drying unit and a control unit; the drying unit includes a drying bellows and a reusable drying filter plate, the two end openings of the drying bellows are connected to the indoor air duct of the central air conditioning, and the bottom wall of the drying bellows is provided with a transverse slot; the drying filter plate is inserted into the drying bellows along the slot from bottom to top, and the drying filter plate absorbs moisture in the air passing through the drying bellows, thereby reducing the air humidity in the indoor air duct. Compared with the existing condensation dehumidification, the energy efficiency management method of the present invention is efficient and optimized, and the power consumed by fully restoring the drying filter plate is far less than the power of the compressor, thereby reducing the energy consumption in the dehumidification mode of the central air conditioning and achieving higher energy efficiency management.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy efficiency management, and in particular relates to an energy efficiency management system and an energy efficiency management method based on central air conditioning. Background Art

[0002] Temperature and humidity control in buildings like office buildings, hospitals, and libraries is primarily achieved through central air conditioning. Central air conditioning is a system used to centrally regulate and control parameters such as temperature, humidity, and cleanliness within a building. Its structure consists of two parts: a heat and cooling system and an air conditioning system. The heat and cooling system is the core of the central air conditioning system, responsible for providing cooling or heating. The air conditioning system is responsible for regulating the temperature, humidity, and cleanliness of the air and delivering it to the areas where it is used.

[0003] The dehumidification principle of existing central air conditioners is condensation dehumidification, which uses the property that water vapor condenses into liquid water when the air is cooled. The surface temperature of the air conditioner's evaporator is lower than the dew point temperature of the indoor air. When the humid air flows through the surface of the evaporator, the water vapor in it will be cooled and liquefied into water droplets, which will be collected and discharged through the drainage system, thereby reducing the moisture content in the air and achieving a dehumidification effect. The specific operating process is that when the air conditioning refrigeration system is running, the refrigerant evaporates in the evaporator and absorbs heat, causing the surface temperature of the evaporator to drop. The indoor air is sucked into the air conditioning unit by the fan, and heat exchange is carried out on the surface of the evaporator. The air temperature is reduced and the water vapor in it condenses into water droplets. The dried air is then sent back to the room by the fan, and the cycle continues, continuously reducing the indoor air humidity. However, condensation dehumidification has the following shortcomings:

[0004] 1. Air conditioning dehumidification essentially uses the refrigeration system to lower the air temperature to below the dew point, causing water vapor to condense and be discharged. When the ambient temperature is low (e.g., below 18°C), the air humidity is already low, and the dehumidification effect is significantly reduced. The system may even shut down due to frost on the evaporator.

[0005] 2. Compared with professional dehumidifiers, the air conditioning dehumidification mode needs to take into account the cooling function, the air volume is small and the dehumidification capacity is limited.

[0006] 3. In dehumidification mode, the air conditioner compressor needs to run continuously, and the energy consumption is close to that of the cooling mode. After the compressor stops, dehumidification cannot be achieved through the internal or external circulation air supply mode.

[0007] 4. In order to maintain the set temperature, the air passes through the evaporator to reduce humidity and the temperature is lowered accordingly. After being heated to the set temperature, it is sent into the room. It is divided into two steps: cooling and dehumidification and heating. There is a problem of cold and heat offset in these two steps, and the energy consumption is higher than the cooling mode.

[0008] 5. Air conditioning dehumidification relies on the refrigeration system and cannot set the target humidity (such as 40%-60%) independently, so the humidity control accuracy is poor.

[0009] 6. During the rainy season or in a high humidity environment (humidity > 70%), the dehumidification effect of air conditioners is far inferior to that of professional equipment, and long-term operation can easily lead to wear of the compressor. Summary of the Invention

[0010] In view of the deficiencies in the prior art, the present invention provides an energy efficiency management system based on central air conditioning, comprising a drying unit and a control unit; the drying unit comprises a drying air box and a reusable drying filter plate, the openings at both ends of the drying air box are connected to the indoor air duct of the central air conditioner, and a horizontal slot is provided on the bottom wall of the drying air box; the drying filter plate is inserted into the drying air box along the slot from bottom to top, and the moisture in the air passing through the drying air box is absorbed by the drying filter plate, thereby reducing the air humidity in the indoor air duct; the drying unit comprises a drying air box connected to the bottom of the drying air box, the drying filter plate extends downward and passes through the top and bottom walls of the drying air box; the control unit comprises an upper actuator mounted on the top wall of the drying air box, the upper actuator is provided with two, the two upper actuators The actuators are respectively close to the openings at both ends of the drying bellows; each upper actuator is provided with a gate that can block the drying bellows; the control unit includes a lower actuator installed under the bottom wall of the drying bellows, and the lower actuator is connected to the lower end of the drying filter plate. The drying filter plate is driven downward by the lower actuator, and the water absorption area of ​​the drying filter plate is moved from the drying bellows to the drying bellows; the control unit includes a pipeline switching mechanism, and the pipeline switching mechanism includes an air inlet pipe and an exhaust pipe, one end of the air inlet pipe is connected to the heat dissipation end of the central air-conditioning outdoor unit, and the other end is connected to the drying bellows and the drying bellows respectively through two branch pipes; one end of the exhaust pipe is connected to the atmosphere, and the other end is connected to the drying bellows and the drying bellows respectively through two other branch pipes, and all branch pipes are provided with solenoid valves.

[0011] The preferred embodiment of the central air conditioning-based energy efficiency management system of the present invention is as follows: the drying unit is equipped with two drying bellows and two drying bellows, one of which is sealed at both ends. Each drying bellows has a corresponding drying bellows below it. The two drying bellows are connected by two intermediate pipes with pipe valves, and the two intermediate pipes are located on either side of the drying filter plate. The indoor air duct of the central air conditioner is connected to the two drying bellows through the intermediate pipes, and the two drying bellows are switched between by two pipe valves and a gate, keeping the indoor air duct unobstructed. Regardless of whether the central air conditioner is in internal or external circulation mode, the drying unit does not affect air supply.

[0012] The preferred solution for the energy efficiency management system based on central air conditioning in the present invention is as follows: the control unit is provided with two sets of lower actuators, which are respectively installed in two drying air boxes. Each drying air box is provided with three parallel drying filter plates, and each drying air box is provided with three sets of electric heating wires inside, each set of electric heating wires being located in the upwind area of ​​a corresponding drying filter plate; the lower actuator of each drying air box is provided with two opposing lower electric cylinder assemblies, and the sliders of the two lower electric cylinder assemblies are connected to the lower ends of the corresponding three drying filter plates via connecting rods. Specifically, two connecting rods are provided between the two opposing sliders, and the lower ends of the corresponding three drying filter plates are provided with ear plates corresponding to each connecting rod. The connecting rods pass through the corresponding ear plates to form a detachable structure, which facilitates the later replacement of the drying filter plates that have reached their service life.

[0013] The control unit is equipped with two sets of duct switching mechanisms: one set of duct switching mechanisms connects between a drying air box and its corresponding drying air box, and the other set of duct switching mechanisms connects between another drying air box and its corresponding drying air box. The air inlet ducts of the two sets of duct switching mechanisms merge to form a single main air inlet duct, which is connected to the heat dissipation terminal of the external unit. Similarly, the exhaust ducts of the two sets of duct switching mechanisms merge to form a single main exhaust duct.

[0014] The preferred embodiment of the central air conditioning energy efficiency management system of the present invention is as follows: each upper actuator includes an upper electric cylinder assembly, each of which is fixedly connected to the upper end of the corresponding gate plate via a triangular bracket. Each upper electric cylinder assembly is equipped with two telescopic cylinders, which extend and retract synchronously. The two telescopic cylinders form a stable linkage structure with the gate plate via the triangular bracket, preventing the gate plate from shaking during sliding.

[0015] The preferred solution of the energy efficiency management system based on central air conditioning in the present invention is: the control unit includes a sensor group and a control center, the sensor group includes temperature and humidity sensors installed in the drying bellows and the drying bellows respectively, and the control center is electrically connected to the central air conditioning controller, the sensor group, all electric heating wires, all upper electric cylinder assemblies, all lower electric cylinder assemblies, all pipeline valves and all solenoid valves respectively.

[0016] The beneficial effects of the energy efficiency management system based on central air conditioning in the present invention are:

[0017] 1. The filter dryer absorbs moisture from the air through physical adsorption, achieving significant dehumidification results. Once saturated, the filter dryer can be heated to restore moisture, replacing existing condensation dehumidification systems. The filter dryer can be reused for unlimited dehumidification capacity. When the filter dryer reaches the end of its service life, it can be replaced to maintain dehumidification capacity.

[0018] 2. Unlike the existing condensation dehumidification, this dehumidification method does not require electricity consumption, reduces the load on the central air conditioning cold and heat source system, and reduces compressor wear.

[0019] 3. Utilizing heat dissipated by the external unit to partially or fully restore the filter drier, energy recovery is achieved, reducing the energy consumed by fully restoring the filter drier. Compared to existing condensing dehumidification systems, fully restoring the filter drier consumes far less energy than the compressor, thus reducing energy consumption in the central air conditioning dehumidification mode. Efficient control and optimization result in higher energy efficiency management.

[0020] 4. The drying filter plate dehumidifies by physical means, and the air temperature does not increase or decrease, effectively solving the problem of cold and hot offset caused by the two steps of cooling and dehumidification and heating.

[0021] The present invention also provides an energy efficiency management method for a central air conditioner. Based on the above energy efficiency management system for a central air conditioner, the drying air box directly connected to the indoor air duct is the main drying air box, and the drying air box below corresponds to the main drying air box; the other drying air box is the auxiliary drying air box, and the drying air box below corresponds to the auxiliary drying air box;

[0022] To turn on the dehumidification mode of the central air conditioner, follow these steps:

[0023] S1. The control center makes the lower actuator of the main drying air box push the three drying filter plates into the main drying air box according to the set temperature and humidity values. The insertion depth is inversely proportional to the humidity value in the set temperature and humidity values.

[0024] S2. When the drying filter plates of the main drying air box are saturated with water, the two upper electric cylinder assemblies drive the corresponding gate plates to insert into the main drying air box; the lower actuator of the auxiliary drying air box pushes the three drying filter plates to insert into the main drying air box, and the insertion depth is the same as that of the drying filter plates of the main drying air box; the two pipeline valves are opened, and the air in the indoor air duct passes through the auxiliary drying air box;

[0025] S3. The solenoid valves of the two branch pipes connected to the main drying air box are opened. The hot air generated by the central air conditioning outdoor unit passes through the air inlet pipe and the main drying air box in sequence, and is finally discharged from the exhaust pipe. The three drying filter plates of the main drying air box are gradually restored by the heat.

[0026] S4. If the three drying filter plates of the auxiliary drying air box are saturated with water and the three drying filter plates of the main drying air box are not fully restored, the two lower electric cylinder assemblies of the main drying air box simultaneously pull the three drying filter plates downward, so that the water absorption area of ​​the three drying filter plates moves from the main drying air box to the main drying air box. The solenoid valves of the two branch pipes connected to the main drying air box are closed, the solenoid valves of the two branch pipes connected to the main drying air box are opened, and the three sets of electric heating wires are heated. The hot air generated by the central air conditioning outdoor unit is switched to the main drying air box, and the high temperature is used to quickly restore the three drying filter plates of the main drying air box.

[0027] S5. When the three drying filters of the auxiliary drying air box are saturated with water, the three drying filters of the main drying air box are reset, the two gates are reset, the two pipe valves are closed, and the air in the indoor air duct passes through the main drying air box. At the same time, the solenoid valves of the two branch pipes connected to the main drying air box are closed, and the solenoid valves of the two branch pipes connected to the auxiliary drying air box are opened. The hot air generated by the central air conditioning outdoor unit passes through the auxiliary drying air box, and the three drying filters of the auxiliary drying air box are gradually restored by the heat.

[0028] S6. If the three drying filter plates of the auxiliary drying air box are not fully restored before the three drying filter plates of the main drying air box are saturated with water, the two lower electric cylinder assemblies of the auxiliary main drying air box simultaneously pull the three drying filter plates downward, so that the water absorption area of ​​the three drying filter plates moves from the auxiliary drying air box to the auxiliary drying air box. The solenoid valves of the two branch pipes connected to the auxiliary drying air box are closed, and the solenoid valves of the two branch pipes connected to the auxiliary drying air box are opened. The three sets of electric heating wires are heated, and the hot air generated by the central air conditioning outdoor unit is switched to the auxiliary drying air box, and the high temperature is used to quickly restore the three drying filter plates of the auxiliary drying air box.

[0029] S7. Repeat S2-S6 to keep the temperature and humidity of the air at the outlet the same as the set temperature and humidity.

[0030] The beneficial effects of the energy efficiency management method of central air conditioning in the present invention are:

[0031] 1. The depth of the water absorption area of ​​the drying filter plate inserted into the main / auxiliary drying air box is adjustable, which can adjust the dehumidification capacity in real time according to the set humidity value, and the humidity control accuracy is significantly improved.

[0032] 2. The two drying bellows switch back and forth to maintain a continuous and stable dehumidification effect.

[0033] 3. If the heat from the outdoor unit in the drying air box is sufficient to restore the filter drier, there's no need to switch to the drying air box, the electric heater is not activated, and the filter drier recovers with zero energy consumption. If the humidity setting is too low, the filter drier will saturate quickly, making it difficult to restore the filter drier quickly. The electric heater can then be used to accelerate recovery. This energy efficiency management minimizes the energy consumption of the filter drier recovery while meeting dehumidification requirements, further reducing overall energy consumption in dehumidification mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a schematic diagram of the structure of the energy efficiency management system based on central air conditioning in the present invention;

[0036] Figure 2 for Figure 1 Top view after the external unit is hidden;

[0037] Figure 3 for Figure 2 Three-dimensional Figure 1 ;

[0038] Figure 4 for Figure 2 Three-dimensional Figure 2 .

[0039] Figure numerals: drying bellows 1, drying filter plate 2, indoor air duct 3, intermediate pipe 4, pipe valve 5, drying bellows 6, heating wire unit 7, gate 8, telescopic cylinder 9, triangular bracket 10, lower electric cylinder assembly 11, slider 12, connecting rod 13, ear plate 14, air inlet pipe 15, exhaust pipe 16, branch pipe 17, solenoid valve 18, air collecting hood 19, outdoor unit 20. DETAILED DESCRIPTION

[0040] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principles, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0041] Example 1:

[0042] like Figure 2 、 Figure 3As shown, embodiment 1 provides an energy efficiency management system based on central air conditioning, including a drying unit and a control unit. The drying unit includes a drying air box 1 and a reusable drying filter plate 2. The openings at both ends of the drying air box 1 are connected to the indoor air duct 3 of the central air conditioner, and the bottom wall of the drying air box 1 is provided with a transverse slot; the drying filter plate 2 is inserted into the drying air box 1 along the slot from bottom to top, and the moisture in the air passing through the drying air box 1 is absorbed by the drying filter plate 2, thereby reducing the air humidity in the indoor air duct 3. Specifically, the drying unit is provided with two drying air boxes 1, one of which is closed at both ends, and the other drying air box 1 is connected to the indoor air duct 3. The two drying air boxes 1 are connected by two intermediate pipes 4 with pipe valves 5, and the two intermediate pipes 4 are located on both sides of the drying filter plate 2. Furthermore, each drying air box 1 is provided with three parallel drying filter plates 2, and the indoor air duct 3 of the central air conditioner is connected to the two drying air boxes 1 through the intermediate pipe 4, and is switched between the two drying air boxes 1 through two pipe valves 5, so as to keep the indoor air duct 3 in an unobstructed state at all times. Regardless of whether the central air conditioner is in the internal circulation mode or the external circulation mode, the drying unit does not affect the air supply.

[0043] A drying air box 6 is connected below each drying air box 1, and each drying filter plate 2 extends downward and passes through the top and bottom walls of the drying air box 6. The water absorption area of ​​each drying filter plate 2 is located at the upper part of the drying filter plate 2. After the drying filter plate 2 moves downward, the water absorption area can be switched to the drying air box 6, but the upper side of the drying filter plate 2 is always located in the drying air box 1 and does not leave the drying air box 1. In addition, three groups of electric heating wires are provided inside each drying air box 6, and each group of electric heating wires is located in the upwind area of ​​a corresponding drying filter plate 2. Each group of electric heating wires is provided with four heating wire units 7, and the four heating wire units 7 are evenly spaced longitudinally to evenly heat the upwind area of ​​each drying filter plate 2.

[0044] like Figure 3 As shown, the control unit in this embodiment includes two upper actuators mounted on the top wall of the drying bellows 1, one located near each end opening of the drying bellows 1. Specifically, each upper actuator is equipped with a gate 8 that can block the drying bellows 1. Each upper actuator includes an upper electric cylinder assembly, each fixedly connected to the upper end of the corresponding gate 8 via a triangular bracket 10. Each upper electric cylinder assembly is equipped with two telescopic cylinders 9, which extend and retract synchronously. The two telescopic cylinders 9 form a stable linkage structure with the gate 8 through the triangular bracket 10, so that the gate 8 does not shake during the sliding process.

[0045] like Figure 4As shown, the control unit in this embodiment also includes a lower actuator mounted below the bottom wall of the drying air box 6. The lower actuator is connected to the lower end of the drying filter plate 2. The lower actuator drives the drying filter plate 2 downward, thereby moving the water absorption area of ​​the drying filter plate 2 from the drying air box 1 into the drying air box 6. Specifically, the lower actuator of each drying air box 6 is equipped with two opposing lower electric cylinder assemblies 11. The sliders 12 of the two lower electric cylinder assemblies 11 are connected to the lower ends of the three corresponding drying filter plates 2 via connecting rods 13. There are two sets of lower actuators, each mounted on two drying air boxes 6. Specifically, two connecting rods 13 are disposed between the two opposing sliders 12. The lower ends of the three corresponding drying filter plates 2 are equipped with lugs 14 corresponding to each connecting rod 13. The connecting rods 13 pass through the corresponding lugs 14 to form a detachable structure, facilitating the later replacement of the drying filter plates 2 after their service life has expired.

[0046] like Figure 1 As shown, the control unit in this embodiment also includes a duct switching mechanism, which includes an air inlet duct 15 and an air outlet duct 16. One end of the air inlet duct 15 is connected to the heat dissipation end of the central air conditioning outdoor unit 20, and the other end is connected to the drying air box 1 and the drying air box 6 respectively through two branch ducts 17. To facilitate the collection of heat blown out by the central air conditioning outdoor unit 20, an air collection hood 19 is placed over the air outlet of the outdoor unit 20 without affecting the air intake and heat dissipation of the outdoor unit 20. Other methods of collecting hot air from the outdoor unit 20 may also be used, and this embodiment is not limited thereto. One end of the exhaust duct 16 is connected to the atmosphere, and the other end is connected to the drying air box 1 and the drying air box 6 respectively through two branch ducts 17. All branch ducts 17 are equipped with solenoid valves 18. Similarly, the control unit is equipped with two sets of duct switching mechanisms: one set of duct switching mechanisms is connected between one drying air box 1 and the corresponding drying air box 6, and the other set of duct switching mechanisms is connected between another drying air box 1 and the corresponding drying air box 6. The air inlet pipes 15 of the two sets of pipe switching mechanisms are combined to form a main air inlet pipe 15, which is connected to the heat dissipation end of the outdoor unit 20, and the air exhaust pipes 16 of the two sets of pipe switching mechanisms are combined to form a main exhaust pipe 16.

[0047] The energy efficiency management system of this embodiment utilizes heat dissipated by the external unit 20 to partially or fully restore the filter drier 2, achieving energy recovery and reducing the energy consumed by fully restoring the filter drier 2. Compared to existing condensing dehumidification systems, fully restoring the filter drier 2 consumes far less energy than the compressor, thereby reducing energy consumption in the central air conditioner's dehumidification mode. This allows for efficient management and optimization, resulting in higher energy efficiency.

[0048] Embodiment 2;

[0049] Example 2 provides a central air conditioning energy efficiency management method, which is applied to the central air conditioning-based energy efficiency management system of Example 1. The control unit also includes a sensor group and a control center. The control center uses a mature industrial computer, and the control program is written into the memory of the industrial computer as needed. The specific model of the industrial computer is not limited. The sensor group includes temperature and humidity sensors installed in the drying air box 1 and the drying air box 6 respectively. The real-time temperature and humidity values ​​are sent to the control center to form a humidity closed-loop control, thereby improving the accuracy of humidity control. The control center is electrically connected to the central air conditioning controller, the sensor group, all electric heating wires, all upper electric cylinder assemblies, all lower electric cylinder assemblies 11, all pipeline valves 5, and all solenoid valves 18.

[0050] For the sake of convenience, in this embodiment, the drying wind box 1 directly connected to the indoor air duct 3 is the main drying wind box 1, and the drying wind box 6 below corresponds to the main drying wind box 6; the other drying wind box 1 is the auxiliary drying wind box 1, and the drying wind box 6 below corresponds to the auxiliary drying wind box 6.

[0051] When the central air conditioner is in dehumidification mode, the controller transmits the set temperature and humidity values ​​to the control center. Based on these values, the control center instructs the lower actuator of the main drying air box 6 to push the three drying filter plates 2 into the main drying air box 1. The insertion depth is inversely proportional to the humidity value in the set temperature and humidity values. This insertion depth is not fixed and is adjusted accordingly based on the real-time humidity value captured by the sensor group.

[0052] The drying filter plate 2 in this embodiment is filled with a reusable desiccant, which can be a silica gel desiccant with a high porosity structure that can effectively absorb moisture in the air. It can be regenerated in an environment of 80-120°C, and the regeneration speed is affected by the temperature. The desiccant can also be a molecular sieve desiccant, the drying principle of which is to adsorb and lock moisture in the air through its own adsorption pore size. The molecular sieve desiccant can also be restored by heating. The specific type of desiccant is not limited in this embodiment, as long as it meets the requirements of reusability and the restoration condition is not more than 350°C.

[0053] When the drying filter plates 2 of the main drying air box 1 are saturated with water, the two upper electric cylinder assemblies drive the corresponding gate plates 8 to insert into the main drying air box 1. The lower actuator of the auxiliary drying air box 1 pushes the three drying filter plates 2 into the main drying air box 1 to the same depth as the drying filter plates 2 of the main drying air box 6. The two duct valves 5 open, allowing air from the indoor air duct 3 to pass through the auxiliary drying air box 1. The ventilation route is then switched, and the solenoid valves 18 of the two branch pipes 17 connected to the main drying air box 1 open. The hot air generated by the central air conditioning outdoor unit 20 passes through the air inlet pipe 15 and the main drying air box 1, and finally is discharged through the exhaust pipe 16. The three drying filter plates 2 of the main drying air box 1 are gradually restored by the heat. If the three drying filter plates 2 of the main drying air box 1 have not fully recovered before the three drying filter plates 2 of the auxiliary drying air box 1 are saturated with water, the two lower electric cylinder assemblies 11 of the main drying air box 6 simultaneously pull the three drying filter plates 2 downward, causing the water absorption area of ​​the three drying filter plates 2 to move from the main drying air box 1 to the main drying air box 6. The solenoid valves 18 of the two branch pipes 17 connected to the main drying air box 1 are closed, the solenoid valves 18 of the two branch pipes 17 connected to the main drying air box 6 are opened, and the three sets of electric heating wires are heated. The hot air generated by the central air conditioning outdoor unit 20 is switched to the main drying air box 6, and the high temperature is used to quickly recover the three drying filter plates 2 of the main drying air box 6. However, if the three drying filter plates 2 of the main drying air box 1 have fully recovered before the three drying filter plates 2 of the auxiliary drying air box 1 are saturated with water, there is no need to switch to the main drying air box 6, and thus there is no need to activate the electric heating wires, thereby achieving the purpose of energy saving.

[0054] Similarly, when the three drying filter plates 2 of the auxiliary drying air box 1 are saturated with water, the three drying filter plates 2 of the main drying air box 1 are reset, the two gate plates 8 are reset, the two pipe valves 5 are closed, and the air in the indoor air duct 3 passes through the main drying air box 1; at the same time, the solenoid valves 18 of the two branch pipes 17 connected to the main drying air box 6 are closed, and the solenoid valves 18 of the two branch pipes 17 connected to the auxiliary drying air box 6 are opened, and the hot air generated by the central air-conditioning outdoor unit 20 passes through the auxiliary drying air box 1, and the three drying filter plates 2 of the auxiliary drying air box 1 are gradually restored by the heat. If the three drying filter plates 2 of the auxiliary drying air box 1 have not fully recovered before the three drying filter plates 2 of the main drying air box 1 are saturated with water, the two lower electric cylinder assemblies 11 of the auxiliary main drying air box 6 simultaneously pull the three drying filter plates 2 downward, causing the water absorption area of ​​the three drying filter plates 2 to move from the auxiliary drying air box 1 to the auxiliary drying air box 6. The solenoid valves 18 of the two branch pipes 17 connected to the auxiliary drying air box 1 are closed, the solenoid valves 18 of the two branch pipes 17 connected to the auxiliary drying air box 6 are opened, and the three sets of electric heating wires are heated. The hot air generated by the central air conditioning outdoor unit 20 is switched to the auxiliary drying air box 6, and the high temperature is used to quickly recover the three drying filter plates 2 of the auxiliary drying air box 6. If the three drying filter plates 2 of the auxiliary drying air box 1 have fully recovered before the three drying filter plates 2 of the main drying air box 1 are saturated with water, there is no need to switch to the auxiliary drying air box 6.

[0055] The purpose of switching back and forth between the drying air box 1 and the drying air box 6 in this embodiment is as follows:

[0056] The heat dissipation temperature of the central air-conditioning outdoor unit 20 is usually not higher than 70°C, the maximum temperature that the drying bellows 1 can withstand is not higher than 80°C, and the maximum temperature that the drying bellows 6 can withstand is not higher than 400°C. The higher the temperature the bellows can withstand, the more expensive the corresponding material is, and the higher the manufacturing cost. Different desiccants have different recovery temperatures, and the recovery speed is proportional to the temperature. In order to meet the requirement of rapid recovery in a short time, the drying bellows 6 has a higher heat resistance temperature and a higher manufacturing cost. On the contrary, the drying bellows 1 is designed to meet the recovery conditions of some desiccants that can be recovered below 80°C, and to reduce the recovery energy consumption by extending the drying time and not starting the electric heating wire. The drying bellows 1 has a low heat resistance temperature, which reduces equipment costs.

[0057] This embodiment uses the above-described method to adjust dehumidification capacity in real time according to the set humidity value, significantly improving humidity control accuracy. It also enhances energy efficiency management in dehumidification mode. If the heat from the external unit 20 in the drying air box 1 is sufficient to restore the filter drier 2, there is no need to switch to the drying air box 6, and the electric heating wire is not activated. Although the drying air box acts as a "slow" recovery channel, the filter drier 0 consumes energy to restore, but the restoration process takes longer. If the set humidity value is low, the filter drier 2 saturates quickly, making restoration impossible in a short time. In this case, the electric heating wire can be used to accelerate the restoration process. The drying air box acts as a "fast" recovery channel, consuming a small amount of energy, and its power is far lower than that of the central air conditioner compressor. This energy efficiency management is designed based on the air conditioning dehumidification requirements and energy consumption optimization principles, while meeting dehumidification requirements. This minimizes the energy consumption required to restore the filter drier 2, further reducing overall energy consumption in dehumidification mode. If the external weather changes suddenly, the "slow" recovery channel and the "fast" recovery channel can be switched at any time and change accordingly according to changes in external temperature and humidity.

[0058] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make some simple deductions or substitutions without departing from the concept of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An energy efficiency management system based on central air conditioning, characterized by: including a drying unit and a control unit; The drying unit includes a drying bellows and a reusable drying filter plate. The openings at both ends of the drying bellows are connected to the indoor air duct of the central air conditioner, and a transverse slot is provided on the bottom wall of the drying bellows. The drying filter plate is inserted into the drying bellows from bottom to top along the slot, and absorbs moisture from the air passing through the drying bellows through the drying filter plate, thereby reducing the air humidity in the indoor air duct. The drying unit includes a drying bellows connected to the bottom of the drying bellows, and the drying filter plate extends downward and penetrates the top and bottom walls of the drying bellows. The control unit includes an upper actuator installed on the top wall of the drying air box, and there are two upper actuators, which are respectively close to the openings at both ends of the drying air box; each upper actuator is provided with a gate that can block the drying air box; the control unit includes a lower actuator installed under the bottom wall of the drying air box, and the lower actuator is connected to the lower end of the drying filter plate, and the drying filter plate is driven to move downward by the lower actuator, thereby moving the water absorption area of ​​the drying filter plate from the drying air box to the drying air box; the control unit includes a pipeline switching mechanism, and the pipeline switching mechanism includes an air inlet pipe and an exhaust pipe, one end of the air inlet pipe is connected to the heat dissipation end of the central air-conditioning outdoor unit, and the other end is connected to the drying air box and the drying air box respectively through two branch pipes; one end of the exhaust pipe is connected to the atmosphere, and the other end is connected to the drying air box and the drying air box respectively through two other branch pipes, and all branch pipes are provided with solenoid valves.

2. The energy efficiency management system based on central air conditioning according to claim 1 is characterized in that: The drying unit is provided with two drying bellows and two drying bellows, one of which is closed at both ends, and there is a drying bellows corresponding to the bottom of each drying bellows. The two drying bellows are connected by two intermediate pipes with pipe valves, and the two intermediate pipes are located on both sides of the drying filter plate.

3. The energy efficiency management system based on central air conditioning according to claim 2 is characterized in that: The control unit is provided with two groups of lower actuators and two groups of pipeline switching mechanisms. The two groups of lower actuators are respectively installed on the two drying air boxes. One group of pipeline switching mechanisms is connected between one drying air box and a corresponding drying air box, and the other group of pipeline switching mechanisms is connected between the other drying air box and a corresponding drying air box.

4. The energy efficiency management system based on central air conditioning according to claim 3 is characterized in that: Each drying air box is provided with three parallel drying filter plates, and each drying air box is provided with three groups of electric heating wires inside, and each group of electric heating wires is located in the upwind area of ​​a corresponding drying filter plate; the lower actuator of each drying air box is provided with two opposite lower electric cylinder assemblies, and the sliders of the two lower electric cylinder assemblies are connected to the lower ends of the corresponding three drying filter plates through a connecting rod.

5. The energy efficiency management system based on central air conditioning according to claim 4 is characterized in that: Each upper actuator includes an upper electric cylinder assembly, and each upper electric cylinder assembly is fixedly connected to the upper end of the corresponding gate plate through a triangular bracket.

6. The energy efficiency management system based on central air conditioning according to claim 1, characterized in that: The control unit includes a sensor group and a control center. The sensor group includes temperature and humidity sensors installed in the drying bellows and the drying bellows respectively. The control center is electrically connected to the central air-conditioning controller, the sensor group, all electric heating wires, all upper electric cylinder assemblies, all lower electric cylinder assemblies, all pipeline valves and all solenoid valves respectively.

7. A method for managing energy efficiency of a central air conditioner, characterized by: According to the energy efficiency management system based on central air conditioning as described in claim 6, the drying air box directly connected to the indoor air duct is the main drying air box, and the drying air box below corresponds to the main drying air box; the other drying air box is the auxiliary drying air box, and the drying air box below corresponds to the auxiliary drying air box; To turn on the dehumidification mode of the central air conditioner, follow these steps: S1. The control center makes the lower actuator of the main drying air box push the three drying filter plates into the main drying air box according to the set temperature and humidity values. The insertion depth is inversely proportional to the humidity value in the set temperature and humidity values. S2. When the drying filter plates of the main drying air box are saturated with water, the two upper electric cylinder assemblies drive the corresponding gate plates to insert into the main drying air box; the lower actuator of the auxiliary drying air box pushes the three drying filter plates to insert into the main drying air box, and the insertion depth is the same as that of the drying filter plates of the main drying air box; the two pipeline valves are opened, and the air in the indoor air duct passes through the auxiliary drying air box; S3. The solenoid valves of the two branch pipes connected to the main drying air box are opened. The hot air generated by the central air conditioning outdoor unit passes through the air inlet pipe and the main drying air box in sequence, and is finally discharged from the exhaust pipe. The three drying filter plates of the main drying air box are gradually restored by the heat. S4. If the three drying filter plates of the auxiliary drying air box are saturated with water and the three drying filter plates of the main drying air box are not fully restored, the two lower electric cylinder assemblies of the main drying air box simultaneously pull the three drying filter plates downward, so that the water absorption area of ​​the three drying filter plates moves from the main drying air box to the main drying air box. The solenoid valves of the two branch pipes connected to the main drying air box are closed, the solenoid valves of the two branch pipes connected to the main drying air box are opened, and the three sets of electric heating wires are heated. The hot air generated by the central air conditioning outdoor unit is switched to the main drying air box, and the high temperature is used to quickly restore the three drying filter plates of the main drying air box. S5. When the three drying filters of the auxiliary drying air box are saturated with water, the three drying filters of the main drying air box are reset, the two gates are reset, the two pipe valves are closed, and the air in the indoor air duct passes through the main drying air box. At the same time, the solenoid valves of the two branch pipes connected to the main drying air box are closed, and the solenoid valves of the two branch pipes connected to the auxiliary drying air box are opened. The hot air generated by the central air conditioning outdoor unit passes through the auxiliary drying air box, and the three drying filters of the auxiliary drying air box are gradually restored by the heat. S6. If the three drying filter plates of the auxiliary drying air box are not fully restored before the three drying filter plates of the main drying air box are saturated with water, the two lower electric cylinder assemblies of the auxiliary main drying air box simultaneously pull the three drying filter plates downward, so that the water absorption area of ​​the three drying filter plates moves from the auxiliary drying air box to the auxiliary drying air box. The solenoid valves of the two branch pipes connected to the auxiliary drying air box are closed, and the solenoid valves of the two branch pipes connected to the auxiliary drying air box are opened. The three sets of electric heating wires are heated, and the hot air generated by the central air conditioning outdoor unit is switched to the auxiliary drying air box, and the high temperature is used to quickly restore the three drying filter plates of the auxiliary drying air box. S7. Repeat S2-S6 to keep the temperature and humidity of the air at the outlet the same as the set temperature and humidity.

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