Self-cleaning inertial sand removal electrostatic dust removal fresh air unit

Abstract

The present invention relates to a central air conditioning terminal fresh air air handling unit, more specifically a self-cleaning inertial sand removal electrostatic dust removal fresh air unit, comprising a self-cleaning inertial sand removal electrostatic dust removal box, an inspection section, a filtering section, a heat and moisture treatment section and a blower section, wherein the self-cleaning inertial sand removal electrostatic dust removal box is used to separate and remove sand from the incoming air, the separated and sanded air enters the inspection section for steady flow and then enters the filtering section for filtration, the filtered air enters the heat and moisture treatment section for temperature control and humidification and then is sent out through the blower section; a large amount of coarse dust particles can be processed before conventional air treatment.

Description

Technical Field

[0001] The invention relates to a central air conditioner terminal fresh air air handling unit, more specifically to a self-cleaning inertial sand removal and electrostatic dust removal fresh air unit. Background Art

[0002] At present, various sand removal machines on the market are all single-function sand removal machines, and sand removal applications combined with central air conditioning are scarce. Dust removal machines are basically open-type sand removal machines and cannot be directly applied to central air conditioning systems with high environmental requirements. On the basis of sand removal, it is an urgent need for fresh air central air conditioning in dusty environments to do a good job of sand and dust collection and regular cleaning of ventilation ducts; how to directly purify the dusty air to meet the needs of comfortable living for personnel or to meet the process cleanliness requirements is the research theme of this project. Sand removal is combined with high-efficiency electronic dust removal of central air conditioning, and ventilation circulation and washing maintain the self-cleaning of purification equipment to meet the needs of clean air conditioning in sandy environments; in response to areas prone to sandstorms or areas with severe dust pollution where a large number of people are densely populated and a large amount of fresh air needs to be introduced, this environment has large dust particles in the air and large amounts, so ordinary filtering devices quickly become dirty and clogged, and a large amount of coarse dust particles need to be processed before conventional air treatment. Summary of the invention

[0003] The object of the present invention is to provide a self-cleaning inertial sand removal electrostatic dust removal fresh air unit, which can process a large amount of coarse dust particles before conventional air treatment.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] The self-cleaning inertial sand removal electrostatic dust removal fresh air unit comprises a self-cleaning inertial sand removal electrostatic dust removal box, an inspection section, a filtering section, a heat and moisture treatment section and a blower section. The self-cleaning inertial sand removal electrostatic dust removal box is used to separate and remove sand from the incoming air. The air after separation and sand removal enters the inspection section for steady flow and then enters the filtering section for filtration. The filtered air enters the heat and moisture treatment section for temperature control and humidification and then is sent out through the blower section.

[0006] The self-cleaning inertial sand-removing electrostatic dust removal box includes a dust removal box, a clean laminar flow plate is fixedly connected to the top of the dust removal box, a sand leakage layer plate is fixedly connected to the bottom of the dust removal box, two sand collecting air ducts are arranged in the dust removal box, a U-shaped flow bypass plate is arranged at the front end of the sand collecting air duct, the U-shaped flow bypass plate is arranged between the clean laminar flow plate and the sand leakage layer plate, an air inlet sand baffle is arranged on the inner side of the flow bypass plate, and a high-voltage electrostatic unit is arranged at the rear end of the sand collecting air duct.

[0007] A wind shield is fixedly connected to the side of the flow bypass plate, and the wind shield is fixedly connected between the clean laminar flow plate and the sand leakage laminar plate.

[0008] A plurality of sand leakage holes are arranged at the bottom of the sand leakage layer plate, and the sand leakage holes are located at the bottom of the flow-circling plate and the high-voltage electrostatic unit.

[0009] Two sand collecting hoppers are fixedly connected to the bottom of the sand leakage layer plate, and the sand leakage holes are communicated with the sand collecting hoppers.

[0010] A sand transport bucket is arranged at the bottom of the sand collecting bucket, a pulley is arranged at the bottom of the sand transport bucket, and a track for the pulley to move is arranged at the bottom of the pulley.

[0011] A sand scraping plate is fixedly connected to the sand transporting bucket, and the sand scraping plate can move to the lower end of the sand collecting bucket.

[0012] A circulating fan is fixedly connected between the two sand collecting hoppers. The circulating fan and the sand collecting hoppers are connected by a pipeline. A circulating air filter is arranged in the pipeline. A circulating air duct is fixedly connected to the circulating fan. The circulating air duct is located between the two sand collecting ducts.

[0013] A plurality of blowing holes are arranged on the cleaning laminar flow plate, and the cleaning laminar flow plate divides the upper end of the dust removal box into a top air duct. The plurality of blowing holes are respectively located at the upper ends of two bypass plates and two high-voltage electrostatic units.

[0014] The circulating air duct is connected to the top air duct. The wind generated by the circulating fan enters the top air duct through the circulating air duct, passes through a plurality of blowing holes through the top air duct and enters the two sand collecting air ducts to clean the sand collecting air ducts.

[0015] The beneficial effects of the present invention are:

[0016] Taking advantage of the deadweight of large-size dust and the large inertial force during operation, sand baffles and flow detour plates at the air inlet are used to block and reduce wind speed in the air flow channel to initially screen out large particles. The change in the cross-section of the flow detour plate produces turbulent deadweight sedimentation, and then the fine dust is adsorbed by a high-voltage electrostatic unit to achieve the purpose of diverting particles of different sizes from the air. The dust flows to the sand collecting hopper through a one-way sand leakage layer at the bottom of the ventilation duct.

[0017] When the main engine stops running, the self-cleaning circulating fan of the sand removal electrostatic dust removal box runs, and the airflow sweeps the sand and dust particles trapped in the air duct from top to bottom, so that the sand and dust in the sand collecting hopper enters the sand transport hopper, achieving the purpose of self-cleaning and reducing the pollution of the sand removal air duct to the air conditioning components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a schematic diagram of the self-cleaning inertial sand removal electrostatic dust removal fresh air unit of the present invention;

[0020] Figure 2 It is a front view of the structure of the self-cleaning inertial sand removal electrostatic dust removal box of the present invention;

[0021] Figure 3It is a side view of the structure of the self-cleaning inertial sand removal electrostatic dust removal box of the present invention;

[0022] Figure 4 It is a top view of the structure of the self-cleaning inertial sand removal electrostatic dust removal box of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the flow-around plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the sand collecting bucket structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the wind flow direction in the self-cleaning inertial sand removal electrostatic dust removal box of the present invention;

[0026] Figure 8 It is a schematic diagram of the sand leakage layer structure of the present invention;

[0027] Fig. 9 It is a schematic diagram of the sand transport bucket structure of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the high-voltage electrostatic unit of the present invention;

[0029] Fig.11 It is a schematic diagram of the position of the sand hopper during circulating air washing of the present invention;

[0030] Fig.12 This is a schematic diagram of the position of the sand bucket when the host supplies air;

[0031] Fig.13 It is a structural schematic diagram of the sand transport bucket and the sand scraper plate of the present invention.

[0032] In the figure: self-cleaning inertial sand removal electrostatic dust removal box 1; maintenance section 2; filtration section 3; heat and moisture treatment section 4; blower section 5; dust removal box 6; clean laminar flow plate 7; top air duct 8; sand leakage layer plate 9; bypass plate 10; high-voltage electrostatic unit 11; sand collecting hopper 12; circulating fan 13; circulating air filter 14; sand transport hopper 15; air inlet sand baffle 16; sand leakage hole 17; wind baffle 18; sand scraping plate 19; circulating air duct 20; pulley 21. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings.

[0034] like Figures 1 to 13 As shown, in order to achieve the technical effect of "being able to process a large amount of coarse dust particles before conventional air treatment", the structure and function of the self-cleaning inertial sand removal electrostatic dust removal fresh air unit are described in detail below.

[0035] The self-cleaning inertial sand removal electrostatic dust removal fresh air unit comprises a self-cleaning inertial sand removal electrostatic dust removal box 1, a maintenance section 2, a filtering section 3, a heat and moisture treatment section 4 and a blower section 5. The self-cleaning inertial sand removal electrostatic dust removal box 1 is used to separate and remove sand from the incoming air. The air after separation and sand removal enters the maintenance section 2 for steady flow and then enters the filtering section 3 for filtration. The filtered air enters the heat and moisture treatment section 4 for temperature control and humidification and then is sent out through the blower section 5.

[0036] Outdoor air enters the self-cleaning inertial sand removal electrostatic dust removal box 1, where the coarse sand particles inertially impact and settle by weight, and are separated from the circumferential air to remove sand. The fine dust is adsorbed on the electrostatic electrode plate under the action of high-voltage static electricity, and after the circulating wind blows down the dust, it enters the maintenance section 2 cleanly to stabilize the flow. When the unit is shut down for maintenance, the dust removal box section can be inspected and the filter can be replaced through the maintenance door, and then the unit enters the filtration section 3. The filter level of the filtration section 3 can be adjusted to meet the air cleanliness requirements of different scenarios, and then the unit enters the heat and humidity treatment section 4. The air temperature and humidity are adjusted through the hot and cold water coils and the humidifier, and the air in the box is sent out through the fan in the blower section 5 to meet the basic air treatment needs. The functional sections can be increased or decreased according to different needs.

[0037] The self-cleaning inertial sand-discharging electrostatic dust removal box 1 includes a dust removal box 6, the top of which is fixedly connected to a clean laminar flow plate 7, the bottom of which is fixedly connected to a sand leakage layer plate 9, two sand collecting air ducts are arranged in the dust removal box 6, a U-shaped flow bypass plate 10 is arranged at the front end of the sand collecting air duct, the U-shaped flow bypass plate 10 is arranged between the clean laminar flow plate 7 and the sand leakage layer plate 9, an air inlet sand baffle 16 is arranged on the inner side of the flow bypass plate 10, and a high-voltage electrostatic unit 11 is arranged at the rear end of the sand collecting air duct; a wind shield 18 is fixedly connected to the side of the flow bypass plate 10, and the wind shield 18 is fixedly connected between the clean laminar flow plate 7 and the sand leakage layer plate 9; a plurality of sand leakage holes 17 are arranged at the bottom of the sand leakage layer plate 9, and the sand leakage holes 17 are located at the bottom of the flow bypass plate 10 and the high-voltage electrostatic unit 11; two sand collecting hoppers 12 are fixedly connected to the bottom of the sand leakage layer plate 9, and the sand leakage holes 17 are connected to the sand collecting hoppers 12.

[0038] When using, Figure 7 and 10As shown, external air enters the dust removal box 6, and the air inlet sand baffle 16 forms a certain angle with the fresh air inlet direction, which increases the wind flow area while deflecting the air and reduces the inlet wind speed. The sand particles collide with the air inlet sand baffle 16 and are deposited on the sand leakage layer plate 9. The air passing through the air inlet sand baffle 16 reaches the flow deflection plate 10 to further separate the sand particles in the air. The flow deflection plate 10 and the box body form a variable ventilation duct. The air forms turbulence behind the spoiler group, and the wind speed is further reduced. The particles are separated and settled to the high-voltage electrostatic unit 11 and discharged through the sand leakage hole 17 at the bottom of the high-voltage electrostatic unit 11. The smaller particles that have not settled in the high-voltage electrostatic field generated by the high-voltage electrostatic unit 11 are adsorbed on each electrode sheet, and fall into the sand collecting hopper 12 after reaching a certain thickness through blowing and washing.

[0039] like Fig.13 As shown, a sand transport bucket 15 is provided at the bottom of the sand collecting bucket 12, a pulley 21 is provided at the bottom of the sand transport bucket 15, and a track for the pulley 21 to move is provided at the bottom of the pulley 21; a sand scraping plate 19 is fixedly connected to the sand transport bucket 15, and the sand scraping plate 19 can move to the lower end of the sand collecting bucket 12.

[0040] A circulating fan 13 is fixedly connected between the two sand collecting hoppers 12. The circulating fan 13 and the sand collecting hoppers 12 are connected by a pipeline. A circulating air filter 14 is arranged in the pipeline. A circulating air duct 20 is fixedly connected to the circulating fan 13. The circulating air duct 20 is located between the two sand collecting air ducts.

[0041] A plurality of purge holes are provided on the cleaning laminar flow plate 7 , which divides the upper end of the dust removal box 6 into a top air duct 8 . The plurality of purge holes are respectively located at the upper ends of two bypass plates 10 and two high-voltage electrostatic units 11 .

[0042] The circulating air duct 20 is connected to the top air duct 8. The wind generated by the circulating fan 13 enters the top air duct 8 through the circulating air duct 20, passes through the top air duct 8 through multiple flushing holes and enters the two sand collecting air ducts to clean the sand collecting air ducts.

[0043] like Fig.12 As shown, this is the position of the sand transport hopper 15 when the unit is working. At this time, the sand and particles separated by the air inlet sand baffle 16, the flow bypass plate 10 and the high-voltage electrostatic unit 11 fall into the sand collecting hopper 12 through the multiple sand leakage holes 17 set on the sand leakage layer plate 9, and fall into the sand transport hopper 15 through the sand collecting hopper 12.

[0044] like Fig.12 As shown in FIG. 1 , the position of the sand transport hopper 15 during self-cleaning is shown. At this time, the sand transport hopper 15 is moved by the pulley 21, so that the sand transport hopper 15 and the sand collecting hopper 12 are separated, and the sand scraper 19 moves to the lower side of the sand collecting hopper 12, so that the sand and particles in the sand transport hopper 15 can be prevented from being sucked into the circulating fan 13 when the circulating fan 13 is working. Fig. 9As shown, a circulating air filter 14 is provided in the pipeline connecting the circulating fan 13 and the sand collecting hopper 12 , and the circulating air filter 14 is used to block the sand and particles etc. which are self-cleaned in the sand collecting hopper 12 , and prevent the sand and particles etc. from being drawn into the circulating fan 13 .

[0045] Start the circulation fan 13. The wind generated by the circulation fan 13 enters the circulation air duct 20, enters the top air duct 8 through the circulation air duct 20, and enters the two sand collecting air ducts through the top air duct 8 through multiple blowing holes, so as to clean the sand and particles remaining on the air inlet sand baffle 16, the flow detour plate 10 and the high-voltage electrostatic unit 11. The sand and particles remaining on the air inlet sand baffle 16, the flow detour plate 10 and the high-voltage electrostatic unit 11 enter the sand collecting hopper 12, fall onto the sand scraping plate 19, and enter the sand transport hopper 15 through the guidance of the sand scraping plate 19, so as to achieve the purpose of self-cleaning and reduce the pollution of the sand removal duct to the air-conditioning components.

Claims

1. A self-cleaning inertial sand removal electrostatic dust removal fresh air unit, comprising a self-cleaning inertial sand removal electrostatic dust removal box (1), a maintenance section (2), a filtering section (3), a heat and moisture treatment section (4) and a blower section (5), characterized in that: The self-cleaning inertial sand removal electrostatic dust removal box (1) is used to separate and remove sand from the incoming air. The air after separation and sand removal enters the maintenance section (2) and enters the filter section (3) for filtration after steady flow. The filtered air enters the heat and moisture treatment section (4) and is internally temperature-controlled and humidified before being sent out through the blower section (5). The self-cleaning inertial sand removal electrostatic dust removal box (1) comprises a dust removal box (6), the top of the dust removal box (6) is fixedly connected to a clean laminar flow plate (7), the bottom of the dust removal box (6) is fixedly connected to a sand leakage layer plate (9), two sand collection air ducts are arranged in the dust removal box (6), the front end of the sand collection air duct is provided with a U-shaped bypass plate (10), the U-shaped bypass plate (10) is arranged between the clean laminar flow plate (7) and the sand leakage layer plate (9), the inner side of the bypass plate (10) is provided with an air inlet sand baffle (16), and the rear end of the sand collection air duct is provided with a high-voltage electrostatic unit (11); A windshield plate (18) is fixedly connected to the side of the flow bypass plate (10), and the windshield plate (18) is fixedly connected between the clean laminar flow plate (7) and the sand leakage layer plate (9); A plurality of sand leakage holes (17) are provided at the bottom of the sand leakage layer plate (9), and the sand leakage holes (17) are located at the bottom of the flow-circling plate (10) and the high-voltage electrostatic unit (11); Two sand collecting hoppers (12) are fixedly connected to the bottom of the sand leakage layer plate (9), and the sand leakage hole (17) is communicated with the sand collecting hopper (12); A circulating fan (13) is fixedly connected between the two sand collecting hoppers (12); the circulating fan (13) and the sand collecting hoppers (12) are connected via a pipeline, a circulating air filter (14) is arranged in the pipeline, a circulating air duct (20) is fixedly connected to the circulating fan (13), and the circulating air duct (20) is located between the two sand collecting air ducts; The cleaning laminar flow plate (7) is provided with a plurality of purge holes, the cleaning laminar flow plate (7) divides the upper end of the dust removal box (6) into a top air duct (8), and the plurality of purge holes are respectively located at the upper ends of the two bypass plates (10) and the two high-voltage electrostatic units (11); The circulating air duct (20) is connected to the top air duct (8), and the wind generated by the circulating fan (13) enters the top air duct (8) through the circulating air duct (20), passes through the top air duct (8), passes through the plurality of flushing holes, and enters the two sand collecting air ducts to clean the sand collecting air ducts.

2. The self-cleaning inertial sand removal electrostatic dust removal fresh air unit according to claim 1 is characterized by: A sand transport bucket (15) is arranged at the bottom of the sand collecting bucket (12), a pulley (21) is arranged at the bottom of the sand transport bucket (15), and a track for the pulley (21) to move is arranged at the bottom of the pulley (21).

3. The self-cleaning inertial sand removal electrostatic dust removal fresh air unit according to claim 2 is characterized by: A sand scraping plate (19) is fixedly connected to the sand transporting bucket (15), and the sand scraping plate (19) can move to the lower end of the sand collecting bucket (12).

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