KR950012122B1 - A low-noice vacuum cleaner - Google Patents

Abstract

The vacuum cleaner having a brush for inhaling dust from the bottom part; an inhale tube for connecting the brush to a main body; a dust collector for filtering dust, air, and something like that, the dust collector being connected to the inhale tube; a dust envelope for gathering dust; a partition wall; an inhale filter inserted into the partition wall; and an electric fan mounted in the partition wall, further comprises a front block case and a back block case; a flow conversion guide formed between the block cases and the electric fan; an exhaust port arranged in the back block case; a flow extension guide for extending the flow way in the rear side of the back block case; a back board in the rear side of the flow extension guide; and a fixture frame for fixing the back board and the back block case.

Description

Low noise vacuum cleaner

1 is a plan view showing a state in which the upper portion of the main body is removed to schematically show a low noise vacuum cleaner according to the present invention.

2 is a front view of the flow path extension guide used in the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a rear view illustrating the separation of the exhaust filter case including the exhaust filter in the low noise vacuum cleaner according to the present invention.

5 is a plan view showing a state in which the upper part of the main body is removed to show a blowing function that can be performed by a low noise vacuum cleaner according to the present invention.

6 is a side cross-sectional view for showing a hot air circulation function that can be performed by a low noise vacuum cleaner according to the present invention.

* Explanation of symbols for main parts of the drawings

1: brush structure 2: suction pipe

3: dust collection room 4: dust bag

5: separation wall 6: intake filter

7: intake hole 8: electric blower

9: front sound insulation case 10: rear sound insulation case

11: euro conversion guide 12: exhaust hole

13: Euro extension guide 14: thick plate

15: fixed frame 16: exhaust filter

17 exhaust filter case 18 sound absorbing material

19: wire storage device 20: packing

21: fixed rib 22: auxiliary rib

23: motor support 24: inlet hole

25: outlet hole 26: exhaust hole

[Field of Invention]

The present invention relates to a low noise vacuum cleaner.

In particular, the present invention relates to a low noise vacuum cleaner using a muffler structure.

More particularly, the present invention relates to a low noise vacuum cleaner capable of performing a cleaning function by a blowing function in addition to a cleaning function by suction during cleaning.

More particularly, the present invention relates to a low noise vacuum cleaner capable of performing a hot air circulation function.

[Background of invention]

It is well known that a cleaning method using a vacuum cleaner has become very common, deviating from the conventional cleaning method using a broom or a mop. In general, a vacuum cleaner which is widely used and used is a brush structure for suctioning dust and the like from its bottom, a suction pipe connecting the brush structure to the vacuum cleaner body, and dust sucked with air connected to an end of the suction pipe. A dust collecting chamber for filtering foreign substances such as dust, a dust bag housed in the dust collecting chamber and collecting dust therein, a separating wall constituting the collecting chamber, an air intake formed in the separating wall, a blower driven by an electric motor, An electric motor for driving the blower, a main body of the vacuum cleaner, and comprises an accommodating chamber accommodating the electric motor and the blower, and an exhaust hole formed in the rear of the accommodating chamber. In addition, in the conventional vacuum cleaner as described above, an electric blower that integrates a wing structure for blowing on one side of the electric motor may be used. These electric blowers contributed to the formation of a slightly smaller vacuum cleaner as a simple combination. Conventional vacuum cleaners as described above generate considerable noise in use. The source of these noises is mainly electric blowers. The noise generated from the electric blowers is a cleaning principle of the vacuum cleaner, which makes the air flow powerful and filters it in the middle. This is because the device must be equipped with a device to filter the dust, which is accompanied by the flow of air being sucked in, to create a very strong air flow.

Therefore, the use of an electric motor with a strong rotational force is inevitable, so considerable noise is generated. The noise generated from the electric blower, which is the source of the noise, is primarily blocked only by the wall corresponding to the main body of the vacuum cleaner constituting the storage chamber accommodating the electric blower, and most of the noise is emitted as it is. In addition, since the noise generated by the air flow due to strong suction is also emitted through the exhaust hole formed in the rear of the storage chamber, most of the noise generated by the conventional vacuum cleaner will be emitted as it is.

Japanese Laid-Open Utility Model Publication No. 52-36873, filed on September 9, 1975 and published on March 15, 1977, describes a low noise vacuum cleaner in which a sound absorbing material having a wavy curve is installed on a wall of an exhaust passage. However, since the exhaust passage of the low noise vacuum cleaner is a first bend of the flow path from the electric blower to the rear, and a sound absorbing material is installed therein, the exhaust passage of the air purifier has not been obtained, and the suction passage is not sufficiently obtained. There was no blowing function other than the cleaning effect or hot air circulation function to eradicate insects or bacteria.

Japanese Utility Model Publication No. 52-135361, filed on April 9, 1976 and published on October 14, 1977, differs between a fan motor and a rib structure for fixing it, to prevent the high-speed rotation of the fan motor through a dust-proof rubber. It describes a low noise vacuum cleaner for suppressing noise caused by vibration. Such a vacuum cleaner only moderates the noise generated by other vibrations in the high speed rotation of the fan motor, and does not suppress the noise caused by the air flow emitted at a high speed or other noise in the high speed rotation of the fan motor itself. Not only is the prevention effect extremely weak, but there is no blowing function or a hot air circulation function to eradicate insects or bacteria other than the cleaning effect by simple suction.

Japanese Laid-Open Utility Model Publication No. 3-49747, filed on September 25, 1989 and published on May 15, 1991, has a flow path for changing the air flow at the upper end of the storage compartment in which the electric blower is housed. Induce the air flow exhausted from the upper part of the body to the upper side of the main body to induce the flow back to reduce the noise caused by the fast exhaust air flow, and also the rib structure for fixing the electric blower It describes a low noise vacuum cleaner for inserting a buffer between the blowers to reduce the noise caused by the vibration of the high speed rotation of the electric blower. Although the low noise vacuum cleaner has improved the noise effect due to the passage of air than the conventional low noise vacuum cleaner, it could not be effectively blocked by the address sound source generated from the electric blower. There is no hot air circulation to eradicate bacteria.

Japanese Patent Application Laid-open No. Hei 4-33626, which was filed on May 29, 1990 and published on February 5, 1992, has a motor thread in which an electric blower is disposed at the rear and a cord reel in which a cord reel is disposed. In the cleaning base body is arranged in the rear of the motor chamber, the exhaust filter is provided in the rear of the motor chamber, and the dust collecting chamber in which the dust filter is disposed in front of the dust chamber, the communication hole is provided in the partition wall blocking the cord reel chamber and the motor chamber. The electric sweeper which has a structure which installs a porous sound absorbing material in this cord reel chamber, and reduces the noise which arises by rotation of an electric blower is described. However, the electric cleaner also installed sound absorbing material at the part where air flow passes, but the noise effect was improved, but it could not be effectively blocked by the address sound source generated from the electric blower. Or there was no mention of the hot air circulation function to eradicate bacteria.

In addition, Japanese Patent Application Laid-open No. 5-84175, filed on September 26, 1991 and published on April 6, 1993, simply describes the inlet and outlet of a plurality of airflows around the electric blower of an existing electric cleaning machine. It has a structure equipped with a silencer formed by forming a, and has a configuration to enable the attenuation of the noise by the muffler, and does not have a special noise attenuation structure other than the addition of a simple silencer, also clean by suction Blowing function other than the effect or hot air circulation function for eradicating insects or bacteria is devised without mentioning at all.

Therefore, the present invention surrounds the electric blower with two sound insulation cases before and after, further forms a flow path conversion guide between the sound insulation case and the electric blower, and further installs a flow path extension guide between the sound insulation case and the exhaust filter. It maximizes the extension, and allows the hose pipe to be inserted into the exit hole of the flow path extension guide, so that the cleaning effect by the blowing function as well as the cleaning effect by the blowing function as well as to eradicate insects or bacteria The present invention was completed by being configured to serve as a hot air circulation function.

[Purpose of invention]

It is an object of the present invention to provide a low noise vacuum cleaner.

Another object of the present invention is to provide a low noise vacuum cleaner capable of performing the cleaning function by the blowing function in addition to the cleaning function by suction during cleaning.

Still another object of the present invention is to provide a low noise vacuum cleaner capable of performing a hot air circulation function.

[Summary of invention]

The present invention relates to a low noise vacuum cleaner using a muffler structure, and more particularly, to a low noise vacuum cleaner capable of performing a cleaning function by a blowing function in addition to a cleaning function by suction at the time of cleaning and also performing a hot air circulation function. .

The vacuum cleaner of the present invention filters a foreign matter such as a brush structure for sucking dust and the like from the bottom, a suction pipe connecting the brush structure to the vacuum cleaner main body, dust connected to the end of the suction pipe and sucked in with the air. A dust bag for collecting dust contained in the dust collection chamber, a partition wall constituting the dust collection chamber, an intake filter inserted into the separation wall, an intake hole formed in the separation wall, suction or blowing air. For an electric blower, a front sound insulation case surrounding the electric blower and a rear sound insulation case, a flow path conversion guide formed between the sound insulation case and the electric blower, an exhaust hole formed in the sound insulation case, a flow path located at the rear of the sound insulation case Passage extending guide to extend the, the back plate for the back of the flow path extension guide, fixing the rear plate At the same time and Kim characterized by consisting of a fixed frame, an exhaust filter and the exhaust filter housing for receiving the exhaust filter located in the rear surface of the plate was filtered airflow coming out from the flow path extending guide for securing the sound insulating case.

The low noise vacuum cleaner according to the present invention fluidly connects one end of the suction pipe connecting the brush structure to the vacuum cleaner main body to the exhaust hole formed in the thick plate in addition to the function of quiet cleaning by the noise reduction effect as described above. It is possible to perform the cleaning function by the blowing function, and the exhaust gas formed in the dust collecting chamber and the thick plate by using the suction pipe after the cleaning operation by suction and blowing is completed without forming a separate hot air circulation flow path in the main body. By fluidly connecting the balls with each other, insects and bacteria can be eradicated.

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

[Description of Specific Example of the Invention]

As shown in FIG. 1, the vacuum cleaner of the present invention has a brush structure (1) for sucking dust and the like from the bottom as its main part, a suction pipe (2) connecting the brush structure (1) to the vacuum cleaner body, A dust collecting chamber (3) connected to an end of the suction pipe (2) to filter foreign substances such as dust sucked with air, a dust bag (4) housed in the dust collecting chamber (3), and collecting dust therein; The separating wall 5 constituting the dust collecting chamber 3, the intake filter 6 inserted into the separating wall 5, the hop pores 7 formed in the separating wall 5, transmission for suction or blowing Blower (8), flow path conversion guide (11) formed between the front sound insulation case (9) and the rear sound insulation case (10) surrounding the electric blower (8), the sound insulation case and the electric blower (8), the Exhaust hole 12 formed in the sound insulation case, the flow path lead is located in the rear of the sound insulation case to extend the flow path The long guide 13, the rear plate 14 located at the rear of the flow path extension guide 13, the fixed frame 15 and the rear plate 14 for fixing the sound insulation case while fixing the rear plate 14. It is characterized in that the exhaust filter 16 and the exhaust filter case 17 for receiving the exhaust filter 16 to filter the air flow exiting from the flow path extension guide 13 is located at the rear of the.

Brush structure (1), suction pipe (2), dust chamber (3) and dust bag (4) is the same as or similar to that used in a conventional vacuum cleaner, the low noise vacuum cleaner of the present invention is not limited thereto. no.

The low noise vacuum cleaner of the present invention is located at the rear of the dust collecting chamber (3) and the partition wall (5) for partitioning the space for accommodating the dust collecting chamber (3) and the electric blower (8) and the interior of the storage space is different and electric The noise generated by the high speed rotation of the blower 8 and the noise generated by the high speed air flow are to be reduced.

The separation wall 5 is introduced into the intake hole 7 for fluidly connecting the dust collecting chamber 3 and the electric blower 8 and the air flow that is located in front of the intake hole 7. An intake filter 6 for filtering foreign matter such as dust is further formed. The diameter of the intake hole 7 may preferably be the same as or slightly larger than the diameter of the suction pipe 2.

Immediately after the separation wall 5 on which the intake hole 7 is formed, an electric blower 8 for forming a high speed air flow is fixed. The electric blower 8 is an electric motor having a wing structure for causing a flow of air to a conventional electric motor.

The sound insulation case has a structure completely surrounding the attention of the electric blower 8, which is composed of two parts of the front sound insulation case 9 and the rear sound insulation case 10 for convenience of assembly and repair, etc. It is assembled and structured to accommodate the electric blower 8 therein.

The front sound insulation case 9 surrounds a housing forming a wing portion of the electric blower 8, and a packing 20 made of a material having elasticity is formed between the front sound insulation case 9 and the electric blower 8. It can be inserted and fixed.

The rear sound insulation case 10 is coupled to the front sound insulation case 9 and has a structure capable of accommodating the electric blower 8 therein, and fixed to fix the electric motor of the electric blower 8. It further comprises a rib 21. The fixed rib 21 extends vertically in the rear sound insulation case 10 and further includes an auxiliary rib 22 for fixing the electric motor of the electric blower 8. The auxiliary ribs 22 support the electric motor of the electric blower 8, and a dustproof motor support 23 may be interposed between the auxiliary ribs 22 and the electric motor.

The flow path conversion guide 11 formed between the sound insulation case and the electric blower 8 is fixed to the motor support 23 fixed to the auxiliary rib 22 to be discharged to the rear from the electric blower 8. It serves to redirect the high velocity air flow toward the separation wall (5). Therefore, when discharged immediately backward from the electric blower 8, the flow of air is reversed to further extend the flow path through which the air flow should pass, and at the same time, the air blower 8 is directly generated by the high speed rotation of the electric blower 8. The noise is reflected toward the electric blower 8 to block the emission of noise to the outside.

The flow path extension guide 13 is located at the rear of the sound insulation case and is fixed to the exhaust hole 12 formed in the sound insulation case so that the inlet hole 24 of the pay extension guide 13 is fluidly connected. The flow path extension guide 13 is shown in detail in FIGS. 2 and 3. As shown in FIG. 2, the passage extension guide 13 has an inlet hole 24 and an outlet hole 25, and an exhaust hole 26 facing rearward is formed at the center thereof. The air flow discharged from the exhaust hole 12 of the sound insulation case is connected to the rear plate 14. The passage extension guide 13 may be formed with two inlet holes 24 and outlet holes 25, respectively, and the diameters of the inlet hole 24 and the outlet hole 25 may correspond to the exhaust hole 26. It may be equal to or slightly smaller in diameter. Therefore, the air flow path is formed longer and at the same time the air flow is refracted at 90 °. In addition, the air flow passing through the narrow space of the inlet hole 24 formed in the pay extension guide 13 passes through a wide flow path formed between the pay extension guide 13 and the rear plate 14 and exits the outlet hole 25 again. Since it is configured to pass through the narrow space of the air flow passing through it is passed through the cross-sectional expansion area such as the muffler structure by the pay extension guide 13 and the thick plate (14). Therefore, it acts as a silencer without significantly affecting the high speed air flow. In addition, the sound absorbing material 18 may be further included on the sidewall of the flow path formed between the flow path extension guide 13 and the rear plate 14 to reduce reflection of noise. However, the present invention is not limited to the number or diameter of the inlet hole 24 and the outlet hole 25 as described above, within the scope not departing from the spirit of the present invention for those skilled in the art. In the will be able to change the number or diameter of the inlet hole 24 and outlet hole 25.

A fixing frame 15 for fixing the sound insulation case is located at the rear of the flow passage extension guide 13. The fixed frame 15 has a lower end fixed to the bottom of the main body, and fixes the sound insulation case including the electric blower 8 together with the separation wall 5. In addition, a rear plate 14 is further formed in the fixing frame 15, and the rear plate 14 forms a flow path together with the flow path extension guide 13 as described above. An exhaust hole 26 having the same diameter as that of the exhaust hole 26 of the flow path extension guide 13 is further formed at the center of the rear plate 14 to be discharged from the exhaust hole 26 of the flow path extension guide 13. Air flow is discharged to the exhaust filter 16. As shown in FIGS. 1 and 4, an exhaust filter 16 is further formed at the rear of the exhaust hole 26 formed in the rear plate 14, and the exhaust filter 16 includes an exhaust filter case ( 17) is fixed.

The exhaust filter case 17 fixes the exhaust filter 16 and is fixed to the lower end of the main body in a removable hinge structure.

The exhaust hole 26 has the same diameter as the intake hole 7 formed in the separation wall 5, and the exhaust hole 26 fluidizes the brush structure 1 and the dust collecting chamber 3. It may be fluidly connected to the suction pipe (2) for connecting.

When the exhaust hole 26 and the suction pipe 2 are connected to each other, the exhaust hole 26 is exposed, and then the suction pipe is connected in the same manner as the suction pipe 2 is connected to the inlet of the dust collecting chamber 3. One end of (2) can be fixed to the exhaust hole 26. Therefore, the exhaust hole 26 may have the same or similar structure as the coupling structure formed at the inlet of the dust collecting chamber 3 of the main body, and the coupling structure is known to those skilled in the art. It is easily understood and can be practiced.

Effects of the configuration and operation of the present invention are as follows.

First, the noise reduction effect of the low noise vacuum cleaner according to the present invention will be described.

The low noise vacuum cleaner according to the present invention is one of the main noise sources of the vacuum cleaner.

The noise caused by the high-speed rotation of the electric blower 8 is restricted to the outside by the primary noise reflection by the flow path conversion guide 11 formed around the electric blower 8 and the electric blower ( 8) It is completely sealed with the sound insulation case surrounding it to minimize the emission of noise secondarily. Furthermore, since the both sides of the sound insulation case are fixed by the intake hole 7 formed in the separation wall 5 and the fixing frame 15 for fixing the sound insulation case, the secondary generation of noise due to vibration transmission is minimized. Suppressed.

The low noise vacuum cleaner according to the present invention is also configured such that the flow path through which the air flow should pass is at least three times higher than that of the conventional vacuum cleaner in order to reduce the noise generated by the high speed air flow. As is widely known, the sound absorbing effect is obtained by multiplying the length of the channel by the degree of sound absorption per unit length according to the material. The sound absorbing effect is proportional to the length of the channel. Therefore, as the length of the flow path increases, the sound absorption effect increases. In Fig. 1, the flow path through which air flows in the low noise vacuum cleaner of the present invention is indicated by an arrow. Air flow discharged from the electric blower (8) is first deflected along the flow path conversion guide (11) and flows toward the separation wall (5) once and hits the wing housing of the electric blower (8) toward the exhaust hole (12) Flows. The air flow passing through the exhaust hole 12 flows into the inlet hole 24 formed in the flow path extension guide 13 and rotates along the flow path formed between the flow path extension guide 13 and the rear plate 14 to exit. The air flows into the ball 25 and exits the outlet hole 25. The air flow hits the fixed rib 21 formed in the sound insulation case and is discharged into the exhaust hole 26 formed in the center of the flow path extension guide 13. In this case, the sound absorbing material 18 may be installed on the sidewall of the flow path formed between the flow path extension guide 13 and the rear plate 14 to further increase the noise reduction effect. The air flow discharged to the exhaust hole 26 is discharged out of the main body through the exhaust filter 16 fixed to the exhaust filter case 17 via the exhaust hole 26 in the center of the rear plate 14. Therefore, the total extension length of the flow path through which air flow is to be increased by at least eight 90 ° refractions. Furthermore, the air flow alternates between a narrow diameter intake hole 7 and an exhaust hole 26 formed in the flow path extension guide 13 and a wide area flow path formed between the flow path extension guide 13 and the rear plate 14. It must pass through, and the effect of cross-sectional expansion occurs, acting as a silencer.

The low noise vacuum cleaner according to the present invention connects the brush structure 1 to the vacuum cleaner body in the exhaust hole 26 formed in the rear plate 14 in addition to the function of quiet cleaning by the noise reduction effect as described above. One end of the suction pipe (2) is connected to the fluid to perform the cleaning function by the blowing function. The cleaning function by the blowing function can be used to blow out dust or the like which contributes to a narrow gap.

The low noise vacuum cleaner according to the invention is also generated by the electric blower 8 by fluidly connecting the exhaust holes 26 formed in the dust collecting chamber 3 and the rear plate 14 to each other by a suction pipe 2. By circulating the hot air continuously, it is possible to eradicate insects and bacteria in the dust bag 4 accommodated in the dust collecting chamber 3. In the conventional vacuum cleaner, since the hot air circulation function can be performed by forming a separate hot air circulation flow path inside the main body of the vacuum cleaner, the volume of the main body of the vacuum cleaner has to be increased. The low noise vacuum cleaner according to the present invention uses the suction pipe 2 after the cleaning operation by suction and blowing is completed without forming a separate hot air circulation passage in the main body, and the dust collecting chamber 3 and the thick plate 14 are used. By connecting the exhaust holes 26 formed in the fluid to each other it is possible to eradicate insects and bacteria.

Although the present invention has been described in detail only with respect to the above-described embodiments, it will be apparent to those skilled in the art to which the present invention can be modified or modified within the spirit and scope of the present invention. Should be limited by

Claims (5)

Brush structure (1) for sucking dust and the like from the bottom, suction pipe (2) connecting the brush structure (1) to the vacuum cleaner body, dust connected to the end of the suction pipe (2) and sucked with air A dust collecting chamber 3 for filtering foreign matter, a dust bag 4 for collecting dust contained in the dust collecting chamber 3, and the like, a separating wall 5 constituting the dust collecting chamber 3, and the separating wall In a conventional vacuum cleaner comprising an intake filter (6) inserted into (5), an intake hole (7) formed in the separation wall (5), and an electric blower (8) for suction or blowing, the electric blower An enclosing front sound insulation case 9 and a rear sound insulation case 10, a flow path conversion guide 11 formed between the sound insulation cases and the electric blower 8, an exhaust hole 12 formed in the sound insulation case, and Located in the rear of the rear sound insulation case extending the flow path guide (13), the A low noise vacuum cleaner comprising a rear plate (14) positioned at the rear of the flow path extension guide (13), and a fixing frame (15) for fixing the rear plate (14) and the rear sound insulation case. The low noise vacuum cleaner according to claim 1, wherein the passage extension guide (13) is further formed with an inlet hole (24) and an outlet hole (25). The low noise vacuum cleaner according to claim 2, wherein the flow path extension guides (13) have two inlet holes (24) and outlet holes (25), respectively. The low noise vacuum cleaner according to claim 1, wherein an exhaust hole (26) is formed at the center of the rear plate (14). The low noise vacuum cleaner according to claim 4, wherein the suction pipe (2) can be fluidly connected to the exhaust hole (26) formed at the center of the rear plate (14).