WO2022205012A1 - Exhaust air of vacuum cleaner returns to suction port to assist in vacuuming, and "zero emission" of internal circulation of airflow - Google Patents

Abstract

A vacuuming device, which is connected to a modified vacuum cleaner air outlet and an original suction air outlet by using tubes. Exhaust air returns to a suction port to assist in vacuuming, and the combination of blowing and suction improves the vacuuming efficiency. An airflow in a vacuum cleaner is self-circulatory, which eliminates the pollution of micro-particles discharged outwards from the gas after vacuuming, and there is "zero emission" of the internal circulation of the airflow.

Description

The exhaust air of the vacuum cleaner returns to the suction port to assist in vacuuming, and the air circulates inside the "zero emission"

Technical field: technical field of vacuuming equipment.

The general working process of vacuum cleaners , such as the suction method on the ground: due to the negative pressure of the vacuum port, the surrounding air flows to the vacuum port, and the wind pressure blows the dust, etc. - it is inhaled; the dust, debris, etc. are deposited by the dust collector , the airflow passes through the filter to expel relatively "clean" air into the surrounding space.

Background Art: Based on the technical principle of vacuum equipment.

Views on general vacuum cleaners: 1. Usually, the dust removal rate of the vacuum cleaner is not very high, and some dust that cannot be sucked has to be manually brushed near the vacuum cleaner port with a small brush - vacuuming by force; 2. Although suction The filter device of dust-type electrical appliances has been improved, but there is still some scruples about whether the exhaust gas of vacuum cleaners is "dirty"----how many micro-particles are contained in it.

Using a blower to remove dust is better than a vacuum cleaner, but a blower can only move dust around - it's not easy to collect.

Generally, the power of vacuum cleaners is relatively large, and the energy of exhaust air is wasted. Convert useless exhaust air into useful dust blowing air --- greatly increase energy utilization! The variable dust removal is composed of a single negative pressure suction - combined into: positive pressure blowing + negative pressure suction! Design a new vacuum inlet and air duct structure, the energy efficiency ratio must be greater than the unmodified former under the same equipment power.

SUMMARY OF THE INVENTION: A major improvement in dust collection equipment: the exhaust air is guided to the air suction port, and the combination of blowing and suction improves the dust collection efficiency. The air flow in the vacuum cleaner is self-circulating, which eliminates the micro-particle pollution discharged from the gas after vacuuming.

The idea of implementing the transformation: the overall structure of the vacuum cleaner equipment such as fan, dust collection, and filtration remains unchanged. Connect the air outlet of the vacuum cleaner to the suction port through a pipe, and make a "blow suction head" synthesized by blowing and sucking, and the positive pressure of the air blows the dust. , the dust is inhaled by the negative pressure dust suction port, so that no air leaks; the air flow through the dust collection, filtration-reciprocating cycle will no longer be exhausted.

Material selection of the experimental device: use general PVC pipes, floor drains, water pipe joints under the pool, air guide hoses; plastic plates, etc.

Specific materials: PVC pipes with diameters of 110, 50, and 32 mm, 50-to-32 mm PVC transfer pipes, and 32 right-angle elbow joints, which can be plugged into PVC floor drains with diameters of 110 and 50 mm; water pipe joints under the pool; can be connected to vacuum cleaners and water joints , 32mm PVC pipe air guide hose; 110 orifice round cover. About 5mm thick plastic plate. A vacuum cleaner with model number: PYC-968.

Production: Make a plastic cover according to the size of the movable cover on the air outlet side of the vacuum cleaner. Press the diameter of the water pipe joint in the center of the cover to expand a hole and screw it in place; cover the cover with the air outlet, and tie the wire to fix the cover. , tape, etc. to block the original exhaust port of the vacuum cleaner - to prevent air leakage.

The thick 110 pipe is the outer air duct pipe that includes the inner air duct pipe and is plugged into the "floor drain"; the 32 pipe is the inner air duct pipe; the 50 pipe is plugged into the "floor drain" and the other end is plugged with the 50-turn 32-turn pipe; A 50-piece tube is used as an extension of the inner opening of the "floor drain". The inner 32 air duct pipe should be as short as possible to reduce the volume, and the air inlet of the 110 air duct pipe should not be blocked - to determine the length of each pipe sawed. Expand 32mm hole on the 110 pipe wall---32 pipe leads out; 110 outer air duct pipe round mouth cover with reaming hole---install the air inlet; on the outer edge of the "floor drain"---close to the 110 pipe and The socket of the floor drain—drilling 36 air outlets with a diameter of 6 mm evenly and symmetrically distributed, the drill bit is inclined at an angle of about 45 degrees when drilling.

Assemble the "Blowing Head": plug the 50 inner pipe and the floor drain, 50 plug the 50-32 adapter---plug the 32 inner air pipe, 32 inner air pipe and 32 elbow, 50 "floor drain" outlet Plug and connect with the lengthened small section 50 pipe; 32 outlet pipe penetrates into 32 hole of 110 pipe wall and is inserted into the inner 32 elbow, 110 pipe mouth cover hole is screwed to install the air inlet pipe joint; several small screws are fastened at several joints, 32 Apply some sealant to the gap where the outlet pipe passes through the 110 pipe wall.

The bottom of the "Blowing Head" is symmetrically glued with a pad of more than 1 mm thick at three points to leave a vacuum gap at the bottom; the margin of the 50 vacuum nozzles in the middle is about 6 mm.

Experiment: Two air guide hoses, one is connected to the suction pipe of the vacuum cleaner, and the other is plugged into the air outlet connector; the other end of the suction hose is connected with the 32 inner air duct pipe drawn from the "blow suction head", and the other end of the air outlet hose is connected. Connect to the ---110 air duct connector on the upper end of the "Blowing Head".

Power on: the adjustable power knob of the vacuum cleaner is in the minimum position; as shown in the video: the plastic debris left in the ground by saws, files, drilled PVC pipes, etc. is sucked up. It can be seen in the video that the "Blowing Head" passes through a gap of more than 1 mm to the ground----inhaling the surrounding debris, and there is no air blowing in the "Blowing Head"----Blowing and repelling debris---- Air leakage phenomenon. The experiment worked as expected! Analysis of the reasons: 1 . The negative pressure of the suction port is greater than the positive pressure of the mouthpiece, and the "suction head" has suction to the outside through the ground clearance----negative pressure; 2 . The arrangement in the "Blowing Head" is that the suction port is in the middle, and the mouthpiece is wrapped around the periphery---around the central suction port---36 air blowing ports with a certain slope inward are evenly distributed in a circular ring.

The blowing mouth of the "blow suction head" can blow up dust---and then sucked by the suction mouth, the dust removal efficiency should be much higher than that of the suction head with a single negative pressure. The airflow circulates inside the vacuum cleaner and is not exhausted to the outside.

I also made a "blow suction head": the outer pipe is made of PVC pipe with a diameter of 75 mm, but the air outlet in the "floor drain" is not drilled next to it but is opened on the upper part - 16 10 mm diameter holes are symmetrically distributed ------Such as the photo: The relative area of blowing to the ground is relatively large----the wind pressure per unit area is smaller, and it is directly close to the air suction port-----some airflow "short-circuit" reduces the blowing efficiency. 

For different vacuuming products, it is necessary to design the "blow-suction" structure and air duct for practical application.

The experimental device is shown in the photo, and the vacuuming process is shown in the video screenshot.

Description of drawings.

Figure 1 is: 110 OD Tube - Undrilled Inner Tube.

Figure 2: Drilling 36 holes in the inner tube.

Figure 3 is: lengthening the middle tube.

Figure 4: The middle pipe is about 6 mm from the ground.

Figure 5: Inside the "Blow Tip".

Figure 6 is: "Blow tip".

Figure 7 is: "Blow tip".

Figure 8 is: install the blower connector.

Figure 9 is: blowing and sucking the whole.

Figure 10 is: Model - original air outlet filter and cover.

Figure 11 is: the dust collection and filtration of the vacuum cleaner.

Figure 12: 75 OD "Blow Tip".

Figure 13 is: 75 OD - drilled hole.

Figure 14 is: 75 outer diameter pipe intermediate pipe lengthened.

Figure 15: The middle tube with an outer diameter of 75 is about 6 mm away from the ground.

Figure 16: Plastic debris.

Figures 17, 18, 19, 20, 21, 22, 23, 24, and 25 are screenshots of the video clips of the 110-diameter "blow tip" sucking debris.

Figures 26, 27, 28, 29, 30, 31, 32, 33, and 34 are screenshots of the video clips of the 75-diameter "blow tip" sucking debris.

Claims (1)

1. The exhaust air from the vacuuming equipment returns to the vacuuming port through the air duct - assisting in vacuuming, and the airflow circulates in the vacuuming equipment to achieve "zero emission" to the outside.