Maintenance-free air purification and intelligent cleaning system based on central air conditioner

Abstract

The utility model discloses a maintenance-free air purification and intelligent cleaning system based on a central air conditioner, which relates to the technical field of central air conditioners and comprises a primary filter, a high-voltage static core, a differential pressure sensor, a high-voltage power supply module, an optical detection module, an automatic cleaning device and a controller, the pressure difference sensors are mounted on the air inlet side and the air outlet side of the primary filter; the high-voltage power supply module is mounted on the high-voltage electrostatic core body; the optical detection module is mounted between the primary filter and the high-voltage electrostatic core body; the automatic cleaning device is mounted beside the primary filter and the high-voltage electrostatic core body; and the controller is electrically connected with the differential pressure sensor, the high-voltage power supply module, the optical detection module and the automatic cleaning device. The system has the effects of reducing the maintenance cost, intelligently and accurately judging the dust collection condition of the system and guaranteeing the continuous and efficient operation and the air quality of the central air-conditioning system.

Description

TECHNICAL FIELD

[0001] The utility model relates to central air conditioning technical field more specifically, it relates to a kind of maintenance-free air purification and intelligent cleaning system based on central air conditioning. BACKGROUND

[0002] In large public buildings and subway stations and other places, central air conditioning system plays a vital role, its built-in primary filter and electrostatic filter are the key components to ensure air quality. These filter devices are mainly designed to effectively remove various particulate matter carried in the air conditioning supply process, including but not limited to large particles, PM2.5 and PM10 and other fine particulate matter, so as to provide a healthy, comfortable indoor environment.

[0003] However, the current maintenance and cleaning method of primary filter and electrostatic filter mainly depends on manual operation, that is, the staff needs to manually disassemble these filter devices for cleaning. This process not only consumes time and effort, but also due to the large number of filters, high dust accumulation and high viscosity, which significantly increases the difficulty and cost of cleaning work. In addition, frequent manual disassembly and cleaning may also cause damage to the filter itself, affecting its filtering effect and service life, thereby increasing the overall operation and maintenance cost and work intensity.

[0004] A utility model patent with patent authorization announcement No. CN207317102U discloses an intelligent filter system of air conditioner, which includes a filter arranged at the air outlet of the air conditioner, a sensor connected with the filter for detecting the dust coverage rate of the filter, a self-cleaning device for cleaning the filter, and a controller connected with the sensor and the self-cleaning device, respectively. Although this technical solution can realize automatic cleaning of the air conditioner, it only uses a sensor to detect the dust coverage rate of the filter, which is difficult to accurately judge the dust accumulation degree of the filter, and is likely to affect the frequency and number of automatic cleaning, thereby causing unnecessary energy waste.

[0005] Therefore, in view of the problems existing in the prior art, there is an urgent need for a cleaning scheme for primary filter and electrostatic filter. UTILITY MODEL CONTENT

[0006] In view of this problem in actual application, the utility model aims to provide a maintenance-free air purification and intelligent cleaning system based on central air conditioning, which reduces maintenance cost and work burden, can intelligently and accurately judge the dust accumulation condition of the system, and ensures the continuous and efficient operation of central air conditioning system and air quality. The specific scheme is as follows:

[0007] The application discloses a maintenance-free air purification and intelligent cleaning system based on a central air conditioner.

[0008] The differential pressure sensor is installed on the air inlet side and the air outlet side of the primary filter and is used for detecting the resistance change of the primary filter; the high-voltage power module is installed on the high-voltage electrostatic core and is used for monitoring the current change of the high-voltage electrostatic core; the optical detection module is installed between the primary filter and the high-voltage electrostatic core and is used for performing LED green light scanning on the primary filter and the high-voltage electrostatic core to form a dust collection simulation image.

[0009] The automatic cleaning device is installed beside the primary filter and the high-voltage electrostatic core and is used for automatically cleaning the primary filter and the high-voltage electrostatic core; and the controller is electrically connected with the differential pressure sensor, the high-voltage power module, the optical detection module and the automatic cleaning device.

[0010] Further, the automatic cleaning device comprises a water inlet pipe, a booster pump, a primary filter screen cleaning water pipe assembly, a high-voltage electrostatic cleaning water pipe assembly and an angle high-pressure cleaning nozzle, the booster pump is arranged on the water inlet pipe and is communicated with the primary filter screen cleaning water pipe assembly and the high-voltage electrostatic cleaning water pipe assembly respectively, the primary filter screen cleaning water pipe assembly and the high-voltage electrostatic cleaning water pipe assembly are respectively located on the air inlet side of the primary filter screen and the high-voltage electrostatic core, and the angle high-pressure cleaning nozzle is arranged on the primary filter screen cleaning water pipe assembly and the high-voltage electrostatic cleaning water pipe assembly respectively.

[0011] Further, the primary filter screen cleaning water pipe assembly comprises a primary filter screen cleaning pipe, a first cleaning rotating actuating mechanism and a primary cleaning water pipe electromagnetic valve, the primary filter screen cleaning pipe is arranged on the air inlet side of the primary filter screen, the first cleaning rotating actuating mechanism is drivingly connected with the primary filter screen cleaning pipe, and the primary cleaning water pipe electromagnetic valve is arranged on the primary filter screen cleaning pipe.

[0012] The high-voltage electrostatic cleaning water pipe assembly comprises a high-voltage electrostatic cleaning pipe, a second cleaning rotating actuating mechanism and a high-voltage electrostatic cleaning pipe electromagnetic valve, the high-voltage electrostatic cleaning pipe is arranged on the air inlet side of the high-voltage electrostatic core, the second cleaning rotating actuating mechanism is drivingly connected with the high-voltage electrostatic cleaning pipe, and the high-voltage electrostatic cleaning pipe electromagnetic valve is arranged on the high-voltage electrostatic cleaning pipe.

[0013] Further, the primary filter screen cleaning pipes are arranged layer by layer along the height direction of the air inlet side of the primary filter screen, and one primary cleaning water pipe electromagnetic valve is arranged on each layer of the primary filter screen cleaning pipes.

[0014] The high-pressure electrostatic cleaning pipe is arranged layer by layer along the height direction of the air inlet side of the high-pressure electrostatic core body, and the high-pressure electrostatic cleaning pipe electromagnetic valve is arranged on each layer of the high-pressure electrostatic cleaning pipe arranged layer by layer.

[0015] Further, the high-pressure cleaning nozzle at an angle is arranged along the length direction of the primary filter screen cleaning pipe and the high-pressure electrostatic cleaning pipe, and the angle of the high-pressure cleaning nozzle at an angle is 21°.

[0016] Further, the first cleaning rotating actuating mechanism and the second cleaning rotating actuating mechanism can respectively drive the primary filter screen cleaning pipe and the high-pressure electrostatic cleaning pipe to rotate 0-120°.

[0017] Further, the drainage pipe is further provided with a sewage filter.

[0018] Further, the drainage pipe is further provided with a sewage filter.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] In the utility model, the dust collection degree of the primary filter and the high-pressure electrostatic core body in the air purification system is accurately judged by the built-in differential pressure sensor, the high-voltage power module and the optical detection module, and when the system detects that the filter core is dirty and blocked, the primary filter screen and the high-pressure electrostatic core body are cleaned automatically by the automatic cleaning device; and after automatic cleaning, the optical detection module is combined for self-detection, and when the cleaning rate reaches the preset value, the self-cleaning function is completed, the problem that the subway air purification equipment needs to be cleaned and maintained regularly by manual operation and the problem that the existing equipment is not accurate enough are solved, and the equipment can be kept clean and efficient for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a top view of the embodiment of the utility model;

[0022] Figure 2 It is a whole schematic view of the embodiment of the utility model.

[0023] Reference signs: 1, primary filter; 2, high-pressure electrostatic core body; 3, differential pressure sensor; 4, high-voltage power module; 5, optical detection module; 6, water inlet pipe; 7, booster pump; 8, primary filter screen cleaning pipe; 9, first cleaning rotating actuating mechanism; 10, primary cleaning water pipe electromagnetic valve; 11, high-pressure electrostatic cleaning pipe; 12, second cleaning rotating actuating mechanism; 13, high-pressure electrostatic cleaning pipe electromagnetic valve; 14, high-pressure cleaning nozzle at an angle; 15, water collecting tray; 16, drainage pipe; 17, sewage filter. DETAILED DESCRIPTION

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] like Figures 1-2 As shown, the maintenance-free air purification and intelligent cleaning system based on central air conditioning includes a primary filter 1 and a high-voltage electrostatic core 2 arranged in parallel from the air inlet to the air outlet inside the central air conditioning unit. Figure 1 The left arrow indicates the air inlet, and the right arrow indicates the air outlet. The pre-filter 1 is close to the air inlet. Outside air passes through the pre-filter 1 (G4 grade) to filter out large particles ≥0.5μm. The remaining particles ≤0.5μm then pass through the high-voltage electrostatic core 2 to ionize the dust and adsorb it onto the core, completing the one-time treatment of the air.

[0026] The system also includes a differential pressure sensor 3, a high-voltage power supply module 4, an optical detection module 5, an automatic cleaning device, and a controller (not shown in the figure). The controller is electrically connected to the differential pressure sensor 3, the high-voltage power supply module 4, the optical detection module 5, and the automatic cleaning device.

[0027] Differential pressure sensor 3 is used to monitor the resistance change of primary filter 1 to determine the degree of dust accumulation and clogging of primary filter 1. High voltage power supply module 4 monitors the current change of high voltage electrostatic core 2 in real time to determine the degree of dust accumulation in the core. Optical detection module 5 performs LED green light scanning on primary filter 1 and high voltage electrostatic core 2 to form a dust accumulation simulation image to determine the dust accumulation situation. Differential pressure sensor 3, high voltage power supply module 4 and optical detection module 5 upload the detection results to the controller. The controller makes multiple judgments based on the detection results of differential pressure sensor 3 and high voltage power supply module 4, combined with the detection results of optical detection module 5, and finally obtains the degree of dust accumulation and clogging of primary filter 1 and high voltage electrostatic core 2. The controller starts the automatic cleaning device to start the corresponding self-cleaning operation for primary filter 1 and high voltage electrostatic core 2 respectively.

[0028] Specifically:

[0029] Differential pressure sensor 3 is installed on the air inlet and air outlet sides of primary filter 1. By detecting the pressure difference between the air inlet and air outlet sides of primary filter 1, the resistance change of primary filter 1 can be obtained. When the resistance is greater than 130 PA, it is determined that there is dust accumulation and blockage.

[0030] The high-voltage power module 4 is installed on the high-voltage electrostatic core 2, specifically a high-voltage power module monitoring box, for monitoring the current change of the high-voltage electrostatic core 2 in real time. Since the high-voltage electrostatic core 2 is of a plate structure, the dust collection current changes by the order of mA when the distance between the plates decreases after dust collection. When the dust collection current change is greater than 100 mA, it is determined that the dust collection rate of the core is greater than 80%, and a dirty blockage signal is fed back.

[0031] The optical detection module 5 is installed between the primary filter 1 and the high-voltage electrostatic core 2, for LED green light scanning of the primary filter 1 and the high-voltage electrostatic core 2 to form a dust collection simulation image. The principle is to form an image of the measured area by emitting a light beam and capturing the reflected light signal. The simulation image is distinguished according to different colors, and the dust is displayed as gray. The larger the gray coverage area, the more dust there is. When more than 80% of the simulation image is gray, it means that the dust collection is serious.

[0032] It should be noted that the differential pressure sensor 3, the high-voltage power module 4 monitoring box, and the optical detection module 5 are all prior art, and the present application only utilizes their functions without involving improvements to them. Therefore, they will not be described here.

[0033] The controller is also prior art, and the present application does not involve improvements to it. A PLC controller or the like can be used, and it will not be described here.

[0034] The automatic cleaning device is installed beside the primary filter 1 and the high-voltage electrostatic core 2, and can automatically clean the primary filter 1 and the high-voltage electrostatic core 2, respectively.

[0035] In one possible embodiment, the automatic cleaning device includes a water inlet pipe 6, a booster pump 7, a primary filter screen cleaning water pipe assembly, a high-voltage electrostatic cleaning water pipe assembly, and an included angle high-pressure cleaning nozzle 14. The primary filter screen cleaning water pipe assembly includes a primary filter screen cleaning pipe 8, a first cleaning rotating actuator 9, and a primary cleaning water pipe electromagnetic valve 10. The high-voltage electrostatic cleaning water pipe assembly includes a high-voltage electrostatic cleaning pipe 11, a second cleaning rotating actuator 12, and a high-voltage electrostatic cleaning pipe electromagnetic valve 13.

[0036] The water inlet pipe 6 is communicated with an external water supply device at one end and communicated with the primary filter screen cleaning pipe 8 and the high-voltage electrostatic cleaning pipe 11 at the other end respectively. The booster pump 7 is arranged on the water inlet pipe 6. The primary filter screen cleaning pipe 8 and the high-voltage electrostatic cleaning pipe 11 are arranged at the air inlet side of the primary filter 1 and the high-voltage electrostatic core 2 respectively. The first cleaning rotating actuator 9 is drivingly connected with the primary filter screen cleaning pipe 8 and driven to rotate by the first cleaning rotating actuator 9. The primary filter screen cleaning pipe 8 is provided with a primary cleaning water pipe electromagnetic valve 10. The second cleaning rotating actuator 12 is drivingly connected with the high-voltage electrostatic cleaning pipe 11 and driven to rotate by the second cleaning rotating actuator 12. The high-voltage electrostatic cleaning pipe 11 is provided with a high-voltage electrostatic cleaning pipe electromagnetic valve 13. The primary filter screen cleaning pipe 8 and the high-voltage electrostatic cleaning pipe 11 are both provided with a high-pressure cleaning nozzle 14 with an included angle.

[0037] The controller is electrically connected with the primary cleaning water pipe electromagnetic valve 10 and the high-voltage electrostatic cleaning pipe electromagnetic valve 13. The opening and closing of the primary cleaning water pipe electromagnetic valve 10 and the high-voltage electrostatic cleaning pipe electromagnetic valve 13 are controlled to respectively start the corresponding self-cleaning operation of the primary filter 1 or the high-voltage electrostatic core 2.

[0038] It should be noted that the first cleaning rotating actuator 9 and the second cleaning rotating actuator 12 can be driving mechanisms such as motors, which will not be described here.

[0039] More specifically, the primary filter screen cleaning pipe 8 is arranged layer by layer along the height direction of the air inlet side of the primary filter 1. Each layer of the primary filter screen cleaning pipe 8 is provided with a primary cleaning water pipe electromagnetic valve 10. Similarly, the high-voltage electrostatic cleaning pipe 11 is arranged layer by layer along the height direction of the air inlet side of the high-voltage electrostatic core 2. Each layer of the high-voltage electrostatic cleaning pipe 11 is provided with a high-voltage electrostatic cleaning pipe electromagnetic valve 13.

[0040] The high-pressure cleaning nozzle 14 with an included angle is equidistantly arranged along the length direction of the primary filter screen cleaning pipe 8 and the high-voltage electrostatic cleaning pipe 11. The included angle of the high-pressure cleaning nozzle 14 is 21°.

[0041] The first cleaning rotating actuator 9 and the second cleaning rotating actuator 12 can respectively drive the primary filter screen cleaning pipe 8 and the high-voltage electrostatic cleaning pipe 11 to rotate 0-120°.

[0042] The system is based on the rotation angle of the two cleaning rotating mechanisms, the included angle of the high-pressure cleaning nozzle 14, and the layer-by-layer arrangement of the two cleaning pipes to realize that the spray range of the high-pressure cleaning nozzle 14 can completely cover the primary filter 1 and the high-voltage electrostatic core 2 during automatic cleaning.

[0043] In addition, the system further comprises a water collecting tray 15 and a drain pipe 16, the water collecting tray 15 is arranged at a lower position of the primary filter 1 and the high-voltage electrostatic core 2, and is used for collecting the cleaned sewage; the outlet of the water collecting tray 15 is communicated with the drain pipe 16, and a sewage filter 17 is further arranged on the drain pipe 16, and the sewage filter 17 is used for filtering the sewage so as to be recycled later.

[0044] The specific implementation principle of the utility model is:

[0045] When the central air conditioner and the filter are normally operated, the differential pressure sensor 3 monitors the resistance change of the primary filter 1 (G4 level) in real time, the high-voltage power module 4 monitors the current change of the high-voltage electrostatic core 2 in real time, and the optical detection module 5 performs LED green light scanning on the primary filter 1 (G4 level) and the high-voltage electrostatic core 2 and forms a dust collection simulation image.

[0046] When the system appears dirty and blocked alarm, the signal is fed back to the air conditioner fan to stop the fan, when the system receives the feedback of the fan stop state, the system automatically judges the dirty and blocked condition of the primary filter 1 and the high-voltage electrostatic core 2 according to the alarm information and starts the corresponding self-cleaning function; when the automatic cleaning function is triggered, the booster pump 7 pressurizes the water inlet pipe 6 to 0.6-0.8Mpa, and the water is delivered to the primary cleaning pipe and / or the high-voltage electrostatic cleaning pipe 11, when the primary filter 1 is dirty and blocked, the primary cleaning water pipe electromagnetic valve 10 is opened layer by layer, when the high-voltage electrostatic core 2 is dirty and blocked, the high-voltage electrostatic cleaning pipe electromagnetic valve 13 is opened layer by layer, and then the included angle high-pressure cleaning nozzle 14 is driven by the first cleaning rotating actuator 9 and / or the second cleaning rotating actuator 12 to rotate and oscillate at 0-120° to clean the primary filter 1 and / or the high-voltage electrostatic core 2 efficiently and comprehensively, and the cleaning sewage is collected by the water collecting tray 15, and the sewage is discharged through the drain pipe 16 after passing through the sewage filter 17.

[0047] When the system is completed, the self-checking is carried out by starting the differential pressure sensor 3, the high-voltage power module 4 and the optical detection module 5, and the self-checking data is uploaded to automatically judge the cleaning degree, when the cleaning degree reaches the system preset value, the dirty and blocked alarm is removed, and the system returns to normal work. The cleaning degree is taken as the preset value when the cleaning rate is above 95%.

[0048] The above only describes the preferred embodiments of the utility model, the protection scope of the utility model is not limited to the above-mentioned embodiments only, and any technical scheme belonging to the utility model idea belongs to the protection scope of the utility model. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model can also be regarded as the protection scope of the utility model.

Claims

1. A maintenance-free air purification and intelligent cleaning system based on central air conditioning, characterized in that, This includes the pre-filter and high-voltage electrostatic core built into the central air conditioning system, as well as a differential pressure sensor, a high-voltage power supply module, an optical detection module, an automatic cleaning device, and a controller, among which: The differential pressure sensor is installed on the air inlet and outlet sides of the primary filter to detect changes in the resistance of the primary filter; the high-voltage power supply module is installed on the high-voltage electrostatic core to monitor changes in the current of the high-voltage electrostatic core; the optical detection module is installed between the primary filter and the high-voltage electrostatic core to perform LED green light scanning on the primary filter and the high-voltage electrostatic core to form a simulated image of dust collection. The automatic cleaning device is installed next to the pre-filter and the high-voltage electrostatic core, and is used to automatically clean the pre-filter and the high-voltage electrostatic core; the controller is electrically connected to the differential pressure sensor, the high-voltage power supply module, the optical detection module and the automatic cleaning device.

2. The maintenance-free air purification and intelligent cleaning system based on central air conditioning as described in claim 1, characterized in that, The automatic cleaning device includes a water inlet pipe, a booster pump, a primary filter cleaning water pipe assembly, a high-voltage electrostatic cleaning water pipe assembly, and a high-pressure cleaning nozzle at an angle. The booster pump is installed on the water inlet pipe and is connected to the primary filter cleaning water pipe assembly and the high-voltage electrostatic cleaning water pipe assembly respectively. The primary filter cleaning water pipe assembly and the high-voltage electrostatic cleaning water pipe assembly are located on the air inlet side of the primary filter and the high-voltage electrostatic core, respectively. A high-pressure cleaning nozzle at an angle is installed on the primary filter cleaning water pipe assembly and the high-voltage electrostatic cleaning water pipe assembly, respectively.

3. The maintenance-free air purification and intelligent cleaning system based on central air conditioning according to claim 2, characterized in that, The primary filter cleaning water pipe assembly includes a primary filter cleaning pipe, a first cleaning rotation actuator, and a primary cleaning water pipe solenoid valve. The primary filter cleaning pipe is arranged on the air inlet side of the primary filter. The first cleaning rotation actuator drives and connects to the primary filter cleaning pipe. The primary filter cleaning pipe is equipped with the primary cleaning water pipe solenoid valve. The high-voltage electrostatic cleaning water pipe assembly includes a high-voltage electrostatic cleaning pipe, a second cleaning rotation actuator, and a high-voltage electrostatic cleaning pipe solenoid valve. The high-voltage electrostatic cleaning pipe is arranged on the air inlet side of the high-voltage electrostatic core. The second cleaning rotation actuator drives and connects to the high-voltage electrostatic cleaning pipe. The high-voltage electrostatic cleaning pipe is equipped with the high-voltage electrostatic cleaning pipe solenoid valve.

4. The maintenance-free air purification and intelligent cleaning system based on central air conditioning according to claim 3, characterized in that, The primary filter cleaning pipe is arranged layer by layer along the height direction of the air inlet side of the primary filter, and each layer of the primary filter cleaning pipe is equipped with a primary cleaning water pipe solenoid valve. The high-voltage electrostatic cleaning tubes are arranged layer by layer along the height direction of the air inlet side of the high-voltage electrostatic core, and each layer of high-voltage electrostatic cleaning tubes is equipped with a high-voltage electrostatic cleaning tube solenoid valve.

5. The maintenance-free air purification and intelligent cleaning system based on central air conditioning according to claim 4, characterized in that, Several angled high-pressure cleaning nozzles are provided along the length of the primary filter cleaning tube and the high-pressure electrostatic cleaning tube, and the included angle of the angled high-pressure cleaning nozzles is 21°.

6. The maintenance-free air purification and intelligent cleaning system based on central air conditioning according to claim 4, characterized in that, Both the first and second cleaning rotation actuators can drive the primary filter cleaning tube and the high-voltage electrostatic cleaning tube to rotate 0-120° respectively.

7. The maintenance-free air purification and intelligent cleaning system based on central air conditioning according to claim 1, characterized in that, It also includes a water collection tray and a drain pipe. The water collection tray is arranged below the primary filter and the high-voltage electrostatic core, and the outlet of the water collection tray is connected to the drain pipe.

8. The maintenance-free air purification and intelligent cleaning system based on central air conditioning according to claim 7, characterized in that, The drain pipe is also equipped with a sewage filter.

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