KR100386257B1 - Exhausted air feed back vacuum cleaner - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust circulation vacuum cleaner, which includes an accommodating space therein and includes a first suction nozzle and a second suction nozzle in a bottom region, and an exhaust port for discharging fluid sucked through the first and second suction nozzles. Casings each formed; A suction fan accommodated in the casing; A filter member disposed on a suction side of the suction fan to suppress foreign substances from flowing into the suction fan; A filter casing for collecting the foreign matter blocked by the filter member therein; A suction passage having one end connected to the suction nozzle and the other end communicated with the filter casing; An exhaust circulation path having one end connected to the discharge side of the suction fan to circulate a part of the fluid discharged from the suction fan; An ejector nozzle part formed at an end region of the exhaust circulation path to allow fluid to be injected at a relatively high speed, and disposed around the ejector nozzle part to form a low pressure space therein, and one side is connected to the second suction nozzle in communication with the second suction nozzle; And an ejector having an ejector chamber discharge tube having one end connected to the end region of the first suction nozzle and the other end connected to the outlet side of the ejector chamber portion. Thereby, the exhaust circulation vacuum cleaner which can increase the suction force of a side area | region so that the foreign material of at least one side area | region can be easily sucked in the advancing direction of a casing is provided.

Description

EXHAUSTED AIR FEED BACK VACUUM CLEANER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust circulation vacuum cleaner, and more particularly, to an exhaust circulation vacuum cleaner for increasing suction force in a lateral region so that foreign matter in at least one region can be easily sucked in a transverse direction of the casing. It is about.

In general, a vacuum cleaner includes a casing having a suction port and an exhaust port, a suction fan accommodated in the casing to generate suction force, and a filter member disposed at the suction side of the suction fan to block foreign substances sucked with the fluid. Equipped.

The exhaust circulation vacuum cleaner is a kind of vacuum cleaner in which at least a part of the fluid discharged from the suction fan is circulated to the suction side.

1 is a longitudinal cross-sectional view of a conventional exhaust circulation vacuum cleaner. As illustrated, the exhaust circulation cleaner includes a main body casing 111 in which an accommodation space is formed, a suction casing 113 disposed under the main body casing 111, and a main body casing 111. It comprises a suction fan 115 to be accommodated, and a filter member 117 disposed on the suction side of the suction fan 115 to accommodate the foreign matter therein. The upper portion of the main body casing 111 is formed so that the handle 119 is extended upward, the control unit 121 is provided on the upper side of the filter member 117.

Meanwhile, a suction port 123 is formed at the bottom of the suction casing 113 to communicate with the outside so as to suck the fluid from the outside, and the suction port 123 has a filter member 117 having a bag shape. Suction passage 125 is formed to be introduced into the inside of). An exhaust circulation path 127 is formed at one side of the suction fan 115 to circulate the fluid discharged from the suction fan 115 toward the suction port 123.

By this configuration, when the suction fan 115 is driven by the control unit 121, the fluid and foreign matter is sucked from the outside through the suction port 123, the sucked fluid and foreign matter is introduced into the filter member 117. . The foreign matter is collected in the filter member 117, the fluid passes through the filter member 117 and flows along the exhaust circulation path 127 via the suction fan 115. The fluid circulated to the suction port 123 is circulated with the fluid sucked from the outside of the suction casing 113 again along the suction path 125 and circulated through the exhaust circulation path 127 to remove foreign substances. Inhalation will be removed.

However, in such a conventional exhaust circulation vacuum cleaner, since the suction force of both side end regions is relatively weak compared to the central region of the inlet 123 along the longitudinal direction of the inlet 123, foreign substances cannot be sufficiently sucked / removed. There is a problem.

Accordingly, an object of the present invention is to provide an exhaust circulation vacuum cleaner that can increase the suction force of the lateral region so that foreign matters of at least one region can be easily sucked in the transverse direction of the casing.

1 is a longitudinal sectional view of a conventional exhaust circulation vacuum cleaner;

2 is a view showing the internal structure of the exhaust circulation vacuum cleaner according to an embodiment of the present invention,

3 is an enlarged side view of the ejector region of FIG. 2;

4 is a plan view of the suction head region of FIG.

FIG. 5 is a plan sectional view taken along the line VV of FIG. 3.

Explanation of symbols on the main parts of the drawings

11 body casing 14 exhaust port

21: suction head 23: first suction nozzle

25: second suction nozzle 31: suction fan

33 filter element 34 suction tube

35: filter casing 36: exhaust circulation pipe

41: ejector nozzle portion 43: ejector chamber portion

45: ejector chamber discharge pipe 47: ejector chamber suction pipe

The object is, according to the present invention, the first suction nozzle formed in the receiving space therein and horizontally open downward in the travel direction in the bottom region, and downward along the travel direction in at least one end region of the first suction nozzle. A casing having a second suction nozzle formed to be opened and an exhaust port for discharging the fluid sucked through the first and second suction nozzles, respectively; A suction fan accommodated in the casing and generating suction force; A filter member disposed on a suction side of the suction fan to suppress foreign substances from flowing into the suction fan; A filter casing connected to the suction side of the suction fan to collect the foreign matter blocked by the filter member so as to accommodate the filter member therein; A suction passage having one end connected to the suction nozzle and the other end communicated with the filter casing; An exhaust circulation path having one end connected to the discharge side of the suction fan to circulate a part of the fluid discharged from the suction fan; An ejector nozzle part formed at an end region of the exhaust circulation path to allow fluid to be injected at a relatively high speed, and disposed around the ejector nozzle part to form a low pressure space therein, and one side is connected to the second suction nozzle in communication with the second suction nozzle; And an ejector chamber having an ejector chamber having one end connected to the end region of the first suction nozzle and the other end connected to the outlet side of the ejector chamber, the ejector chamber having an ejector chamber. Achieved by a cleaner.

Here, it is preferable to further include an ejector chamber suction pipe, one end of which is connected in communication with the second suction nozzle and the other end of which is connected in communication with the other end of the ejector chamber part.

And, one end of the suction passage is effectively connected to each other at a point spaced a predetermined distance from the center along the longitudinal direction of the first suction nozzle toward the opposite end side of the ejector chamber discharge pipe.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

Figure 2 is a view showing the internal structure of the exhaust circulation vacuum cleaner according to an embodiment of the present invention, Figure 3 is an enlarged side view of the ejector region of Figure 2, Figure 4 is a plan view of the suction head region of Figure 2 5 is a plan sectional view taken along the line VV of FIG. 3. As shown in these figures, the present exhaust circulation vacuum cleaner includes a casing having a main body casing 11 forming a receiving space therein and a suction head 21 disposed below the main body casing 11, and a main body casing. The suction fan 31 accommodated inside the 11 to generate suction force, the filter member 33 disposed on the suction side of the suction fan 31 to block foreign substances, and the peripheral region of the filter member 33. The filter casing 35 is disposed to collect foreign matters blocked by the filter member 33, and the ejector 40 is disposed inside the suction head 21.

The suction fan 31 is accommodated and installed in the upper front area of the main body casing 11, and the filter casing 35 is communicated with each other at the lower side of the suction fan 31 and is detachably installed to the main body casing 11. It is. An exhaust port (not shown) is formed at one side of the suction fan 31 to discharge the fluid, and an exhaust circulation pipe 36 is formed at one side of the exhaust port to circulate a part of the fluid discharged from the suction fan 31. One end of) is combined.

The suction head 21 is formed to have a substantially quadrangular shape in planar projection, and a first suction port 22 is formed in the front bottom region so as to suck fluid from the outside, and the first suction port 22 extends in the longitudinal direction. Accordingly, the second suction port 24 is formed in the rear region of the one end portion in a horizontal direction in the longitudinal direction of the first suction port 22. A first suction nozzle 23 and a second suction nozzle 25 which are opened downward are respectively provided at the first suction opening 22 and the second suction opening 24, respectively.

Inside the first suction nozzle 23, a rotary brush 51 is rotatably installed around a rotation axis arranged along the longitudinal direction of the first suction port 22, and a rear side of the first suction nozzle 23 is provided. The brush drive motor 55 is provided in the area so that the rotation brush 51 can be rotated. One side of the rotating brush (51) is coupled to the driven pulley (53) integrally rotatable, and the drive shaft (57) is coupled to the rotating shaft of the brush drive motor (55) corresponding to the driven pulley (53). These driven pulleys 53 and drive pulleys 57 are connected to the transmission belt 59 so as to be integrally rotatable with each other.

The other end of the suction pipe 34 is formed in the first suction nozzle 23 and the suction pipe 34 is connected to the filter casing 35 at one end thereof. The suction pipe 34 is connected to each other in communication with the first suction nozzle 23 at a point spaced a predetermined distance from the center of the first suction port 22 to the one end side.

On the other hand, the ejector 40 is provided in the distal region of the exhaust circulation pipe 36, one end of which is connected to the discharge side of the suction fan 31 and extends downwardly to the second suction nozzle 25 area in the vertical direction. The ejector 40 is connected to the distal end of the exhaust circulation pipe 36, the ejector nozzle portion 41 and the ejector nozzle unit (41) to inject the fluid flowing along the exhaust circulation pipe 36 at a low pressure high speed ( 41, the ejector chamber portion 43 forming a predetermined low pressure space around the one end, and one end is connected to the outlet side of the ejector chamber portion 43 and the other end is in communication with one end of the first suction nozzle 23 It is configured to include an ejector chamber discharge pipe 45 to be connected.

The ejector chamber portion 43 is disposed so that the outlet side faces forward along the front and rear direction of the suction head 21, and one end of the ejector chamber suction pipe 47 communicates with each other in the opposite end region of the ejector chamber portion 43. Are combined. The other end of the ejector chamber suction pipe 47 is coupled to the second suction nozzle 25 so as to suck the fluid and foreign matter from the outside through the second suction port 24.

By this configuration, when power is applied to the suction fan 31, suction of fluid and foreign matter is started from the outside through the first suction port 22, and at the same time, power is applied to the brush driving motor 55 to rotate the brush. 51 is driven to rotate. The rotary brush 51 is in contact with the bottom surface to allow foreign substances on the bottom surface to flow into the first suction nozzle 23 to promote the suction of the foreign substances. The fluid and foreign matter sucked into the first suction nozzle 23 through the first suction port 22 flow upward along the suction pipe 34 and flow into the filter casing 35.

The foreign matter introduced into the filter casing 35 is blocked by the filter member 33 and collected inside the filter casing 35, and the fluid sucked into the suction fan 31 by passing through the filter member 33. Some are exhausted through the exhaust vents. Some of the fluid discharged from the suction fan 31 flows along the exhaust circulation pipe 36 and is injected at a low pressure and high speed through the ejector nozzle part 41 into the ejector chamber discharge pipe 45.

As a result, the inside of the ejector chamber part 43 becomes relatively low in pressure, and fluid and foreign substances are sucked from the outside through the second suction opening 24. The sucked fluid and foreign substances are introduced into the ejector chamber part 43 via the second suction nozzle 25 and the ejector chamber suction pipe 47.

The fluid and foreign matter introduced into the ejector chamber part 43 enter the inside of the ejector chamber discharge pipe 45 and are injected to the end of the first suction nozzle 23 together with the fluid injected from the ejector nozzle part 41. . Accordingly, the foreign matter in the end region of the first suction nozzle 23 flows to the central region where the suction force is relatively strong along the longitudinal direction of the first suction nozzle 23 and is sucked into the suction pipe 34.

In the above-described and illustrated embodiments, the first suction nozzle is provided on the front of the suction head, the second suction nozzle is installed on one side of the rear suction nozzle, and the ejector is installed in the second suction nozzle area. For example, although described, the second suction nozzle and the third suction nozzle are respectively provided on both sides of the suction head, and the corresponding ejector may be installed in the second suction nozzle and the third suction nozzle, respectively.

As described above, according to the present invention, there is provided a suction head having a first suction port and a second suction hole in a bottom region, an exhaust circulation pipe for circulating a part of the fluid discharged from the suction fan, and an end region of the exhaust circulation pipe. By forming an ejector nozzle portion and an ejector chamber portion formed around the ejector nozzle portion and having an outlet side connected to one end of the first suction nozzle and a suction side connected to the second suction nozzle, the suction force of the lateral area is increased, thereby An exhaust circulation vacuum cleaner capable of easily inhaling / removing foreign matter in the region is provided.

In addition, according to the present invention, the ejector chamber of the first suction port by connecting the suction tube acting the suction force at a point spaced a predetermined distance from the center in the longitudinal direction of the first suction port to the opposite end region to which the ejector chamber discharge pipe is connected. An exhaust circulation vacuum cleaner capable of increasing the suction force of the opposite end region to which the discharge pipe is coupled is provided.

Claims (3)

A first suction nozzle having a receiving space formed therein and horizontally opened downward in the traveling direction in the bottom region, and a second suction nozzle formed to be opened downward in the traveling direction in at least one end region of the first suction nozzle; Casings each having an exhaust port for discharging fluid sucked through the first and second suction nozzles; A suction fan accommodated in the casing and generating suction force; A filter member disposed on a suction side of the suction fan to suppress foreign substances from flowing into the suction fan; A filter casing connected to the suction side of the suction fan to collect the foreign matter blocked by the filter member so as to accommodate the filter member therein; A suction passage having one end connected to the suction nozzle and the other end communicated with the filter casing; An exhaust circulation path having one end connected to the discharge side of the suction fan to circulate a part of the fluid discharged from the suction fan; An ejector nozzle part formed at an end region of the exhaust circulation path to allow fluid to be injected at a relatively high speed, and disposed around the ejector nozzle part to form a low pressure space therein, and one side is connected to the second suction nozzle in communication with the second suction nozzle; And an ejector chamber having an ejector chamber having one end connected to the end region of the first suction nozzle and the other end connected to the outlet side of the ejector chamber, the ejector chamber having an ejector chamber. vacuum cleaner. The method of claim 1, And an ejector chamber suction tube having one end connected in communication with the second suction nozzle and the other end connected in communication with the other end of the ejector chamber portion. The method according to claim 1 or 2, One end of the suction passage is connected to each other in communication with the point spaced apart a predetermined distance from the center along the longitudinal direction of the first suction nozzle to the opposite end side of the ejector chamber discharge pipe.