JP2006075307A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner improving a suction force without any great structural changes in a body and an electric blower. <P>SOLUTION: An adapter having a shape improving an air inflow efficiency of the electric blower is provided between a rubber vibration isolator of the electric blower and the electric blower. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a household vacuum cleaner.

  In general vacuum cleaners, the dust-containing air sucked from the suction port by the operation of the electric blower is guided to the main body of the vacuum cleaner, and dust is trapped through the dust collecting part in the main body of the vacuum cleaner. It is configured to exhaust outside the body.

  The dust collection unit captures dust by filtering with a paper filter, exhausts the cleaned air out of the main body of the cleaner, and traps dust by filtering with a dust collection filter to clean the cleaned air. Separates air and dust that has been cleaned by centrifugal separation using a cyclone separation cylinder, and exhausted outside the main body. The cleaned air is removed from the main body of the vacuum cleaner, and the dust is a dust collector with a dust collecting filter. There is a cyclone separation system that collects dust.

  In order to make the exhaust gas cleaner, it is necessary to sufficiently capture dust. Since the air that has passed through the electric blower is exhausted outside the main body of the cleaner, the paper filter and the dust collection filter are provided in front of the electric blower.

  Moreover, in order to improve the suction performance and reduce noise, for example, as disclosed in Patent Document 1, it has a height equivalent to the air inlet provided in the fan case between the electric blower and the front of the support rubber. A technique in which a wall surface is provided is disclosed.

Japanese Patent Laid-Open No. 6-25004

  In the above conventional paper filter type and dust collection filter type vacuum cleaner, in order to keep the exhaust air cleaner, it is necessary to make the paper filter and dust collection filter finer and impervious to dust. There is. However, a fine filter has high ventilation resistance and high pressure loss. When the pressure loss becomes high, the suction force, which is the original performance of the vacuum cleaner, decreases, and problems such as the inability to suck dust occur.

  For this reason, in order to reduce the pressure loss, the main body structure needs to increase the inner and outer diameters of the hose connected to the main body and the expansion joint pipe connected to the suction port at the end. Enlarging the diameter of the tube has a very bad influence on both the user side and the building side, such as poor usability and major changes in the body structure.

  As another method, there is a measure for preventing a decrease in suction force by improving the performance of the electric blower. However, it is very difficult to improve the performance of the electric blower, and even if the performance is improved, problems such as noise and vibration are generated.

  Moreover, in the technique described in Patent Document 1, since the support rubber is deformed by the negative pressure as the electric blower is operated, there is a drawback in that the airflow is disturbed.

  In consideration of the above problems, the present invention provides a vacuum cleaner that improves the suction power that is the original performance of a vacuum cleaner with a simple structure and the performance of an electric blower without changing the main body structure. The purpose is to provide.

  The present invention relates to an electric vacuum cleaner including a vibration isolating rubber between a main body case and an electric blower, and an adapter having a shape that improves the air inflow efficiency of the electric blower between the vibration isolating rubber and the electric blower. Is provided.

  Further, the adapter is detachable, and the vacuum cleaner can be operated even when only the adapter is removed.

  The air inflow portion of the adapter is provided with a groove in the same direction as the internal flow of the electric blower or a rib in the same direction as the internal flow of the electric blower in order to increase the efficiency of air flow. And

  The adapter may be larger than a radius of an opening end of the electric blower.

  According to the present invention, the main body structure is not remodeled, the performance of the electric blower is also in the current state, and the suction force, which is the original performance of the cleaner, can be improved.

  In addition, since the adapter can be detached, the vacuum cleaner can be operated even in the detached state, so that the performance can be improved without changing the structure of the electric blower.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view of a vacuum cleaner showing an embodiment of the present invention. FIG. 2 is a perspective view of the cleaner body. FIG. 3 is a view of the main body case unit of the cleaner body as viewed from above. FIG. 4 is a sectional side view of the cleaner body. FIG. 5 is a perspective view of the electric blower unit. FIG. 6 is a sectional side view of the adapter of the present invention. FIG. 7 is a cut-away side view of this body with the adapter of the present invention attached. 8 and 9 are improved front views of the adapter of the present invention.

  As shown in FIG. 1, the vacuum cleaner in this embodiment includes a cleaner body 1, a hose 2, a hand operation tube 3, an expansion joint 4, and a suction port 5, and the cleaner body 1 and the hand operation tube 3 are connected to the hose 2. The suction port 5 is connected to the local operation tube 3 via the expansion joint 4 for use.

  As shown in FIGS. 2 and 3, the cleaner body 1 includes a hose 2, a hose joint 6 for joining the cleaner body 1, an electric blower 12, and a power supply cord 13 for supplying power to a body case 7. , A wheel 8 for traveling, an upper lid 9 for maintaining airtightness in the body case 7, a handle 10 for holding the vacuum cleaner body 1, and an exhaust filter 11 that is a passage for exhausting air taken in by the electric blower 12 to the outside. Have

  As shown in FIG. 3, the dust-containing air due to the suction force of the electric blower 12 sucks dust together with the intake air flow by sucking from the suction port 5, and the sucked dust-containing air is sucked into the expansion joint 4, the hand control tube 3, and the hose It flows into the cleaner body 1 through 2. The inflowing dust-containing air passes through the dust collecting filter 14 from the hose joint 6 and is sucked into the electric blower 12 through the electric blower protection filter 15. At this time, dust is captured by the dust collection filter 14 and the electric blower protection filter 15, and the purified air passes through the electric blower 12 and is exhausted from the exhaust filter 11 and the wheels 8 through the electric blower support member 16. Is done.

  FIG. 4 is a sectional side view of the cleaner body 1. In the lower part of the main body case 7, a caster 17 is provided separately from the wheels 8 for traveling to assist traveling. Between the main body case 7 and the electric blower 12, an anti-vibration packing 18 for maintaining the airtightness of the main body case 7 and the electric blower 12 is provided. The anti-vibration packing 18 also serves to prevent vibrations during operation of the electric blower 12 from being transmitted to the main body case 7. The electric blower 12 includes a suction fan unit 19 and an electric motor unit 20, and is arranged so that the suction fan unit 19 is placed on the front side, the motor unit 20 is placed on the rear side, and horizontally. A suction port (a suction port of the electric blower 12, which will be described later) provided on the front side of the suction fan unit 19 is placed so as to face the center of the back surface of the dust collection filter 14.

  FIG. 5 is a perspective view of the unit of the electric blower 12. The electric blower 12 has a blower suction port 21 in the suction fan unit 19. When the electric motor unit 20 is energized, the suction fan rotating body 22 inside the suction fan unit 19 is rotated and sucked into the blower suction port 21. The blower suction port 21 is sealed between the blower suction port 21 and the suction fan rotator 22 in order to maintain airtightness with the suction fan rotator 22, and the shape of the blower suction port 21 embeds a sealing material to blow the blower. The protruding portion 23 has a protruding shape. In order to keep the suction fan unit 19 airtight with the body case 7, a vibration-proof packing 18 is attached to the outer periphery of the suction fan unit 19 of the electric blower 12 to keep the airtightness.

  As shown in FIGS. 1, 4, and 5, the air sucked into the blower suction port 21 by the electric blower 12 is not directly sucked from the outside air, but the suction port 5, the expansion joint 4, the hose 2, and the hose port. Passing through the joint 6, the main body case 7 expands its intake passage. The main body case 7 is provided with a dust collection filter 14 and an electric blower protection filter 15 that serve as resistance to intake air, and hinders the intake force of the electric blower 12. The intake passage enlarged by the main body case 7 is reduced in the intake passage at the blower suction port 21 of the electric blower 12, and air is taken into the electric blower 12 and discharged outside the machine as exhaust.

  At this time, the air sucked into the electric blower 12 causes an air pressure expansion loss due to the expansion of the intake flow path by the main body case 7, and the intake force of the electric blower 12 is reduced due to the expansion loss. Similarly, the air sucked into the blower suction port 21 of the electric blower 12 causes an air pressure reduction loss when the intake passage is reduced from the main body case 7 to the blower suction port 21, and the electric blower 12 is generated from the reduction loss. The intake power of the engine is reduced. The concept of fluid by suction is that air is sucked in due to a pressure difference between the open end of the pipeline and the outside, and does not go directly to the open end of the pipeline. For this reason, the flow of air sucked into the electric blower 12 hits the surface of the suction fan portion 19 after getting into the blower suction port 21 directly from the main body case 7, and then passes over the blower protrusion 23 to blower blower suction port 21. And air that enters the surfaces of the vibration-proof packing 18 and the suction fan unit 19 and then passes over the blower protrusion 23 and flows into the blower suction port 21. Air other than those directly sucked into the blower inlet 21 from the main body case 7 is turbulent because the airflow is disturbed, and the air intake force of the electric blower 12 is hindered.

  The present invention is for avoiding a reduction in intake force of the electric blower 12 due to the air pressure reduction loss.

  FIG. 6 is a cross-sectional side view of the adapter 30 according to the embodiment of the present invention. The adapter 30 is an integrally molded product, and each part thereof has the same height as the vibration-proof packing 18 when the adapter outer circumference circle 30a located between the electric blower 12 and the vibration-proof packing 18 is attached. The adapter surface 30b formed so as to be located, the adapter protrusion 30c that is located in front of the adapter surface 30b and is configured to hide the fan protrusion 23 of the electric blower 12, and the fan inlet of the electric blower 12 from the adapter protrusion 30c The adapter inlet 30d having a diameter larger than the diameter of the blower protrusion 23 and an adapter alignment 30e formed in the same shape as the blower protrusion 23 of the electric blower 12 so as to have a smooth curve in FIG. ing.

  When the adapter outer peripheral circle 30a of the adapter 30 is sandwiched between the electric blower 12 and the vibration isolating packing 18 and incorporated in the main body case 7, no leakage occurs from any part of the electric blower 12, the vibration isolating packing 18, or the adapter 30. Thus, the thickness of the adapter outer circumference circle 30a is made as thin as possible. Furthermore, it is desirable that the tip of the adapter outer circumference circle 30a is inclined. Further, the diameter of the adapter outer circumference circle 30a is smaller than the diameter of the suction fan section 19 of the electric blower 12, so that no leakage occurs from any part of the electric blower 12, the vibration-proof packing 18, and the adapter 30. It has a configuration.

  The height of the adapter surface 30b of the adapter 30 has a function of reducing the turbulent flow generated in the vicinity of the vibration isolating packing 18 by making the height of the adapter surface 30b the same as the thickness in the lateral direction of the vibration isolating packing 18.

  The adapter protrusion 30c of the adapter 30 is configured to conceal the blower protrusion 23 of the electric blower 12, and after striking the surface of the suction fan part 19 or the adapter surface 30b, it gets over the blower protrusion 23 and enters the blower inlet 21. It has a function to reduce turbulence generated by the incoming air. The tangent line between the adapter surface 30b and the adapter protrusion 30c has a streamline shape so as not to generate turbulent flow.

  The adapter suction port 30d of the adapter 30 has a shape having a diameter larger than the diameter of the blower protrusion 23 so that air can smoothly enter the blower suction port 21 of the electric blower 12. Further, it is desirable that the tip of the adapter suction port 30d is inclined so that the blower suction port 21 does not peel off.

  The adapter alignment 30e of the adapter 30 is formed to eliminate the positional deviation between the blower protrusion 23 of the electric blower 12 and the adapter 30, and is configured with a slightly larger diameter than the blower protrusion 23 in consideration of assembly. ing.

  FIG. 7 is a sectional side view of the adapter 30 of the present invention attached to the electric blower 12 and attached to the main body case 7. When mounted on the main body case 7, the surface positions of the vibration-proof packing 18 and the adapter surface 30b of the adapter 30 are substantially flat. Thereby, the turbulence of the airflow generated by the step of the vibration-proof packing 18 is reduced, and the intake force of the electric blower 12 can be improved. Further, the adapter protrusion 30 c of the adapter 30 covers the blower protrusion 23 of the electric blower 12. Thereby, the turbulence of the airflow generated by getting over the blower protrusion 23 of the electric blower 12 and flowing into the blower suction port 21 is reduced, and the intake force of the electric blower 12 can be improved. Further, the adapter alignment 30e of the adapter 30 reduces the assembly failure due to the positional deviation between the electric blower 12 and the adapter 30 that may occur during assembly.

  FIG. 8 is a front view of a ribbed adapter 31 which is an improved product of the adapter 30 of the present invention. The adapter 31 with ribs is an integrally molded product, like the adapter 30, and each part thereof has an outer peripheral circle 31a with ribs positioned between the electric blower 12 and the vibration isolating packing 18 and the surface thereof when the vibration isolating packing 18 is attached. Ribbed adapter surface 31b formed to be the same height as the vibration-proof packing 18, and the rib-shaped adapter projection which is positioned in front of the rib-equipped adapter surface 31b and which is configured to hide the blower protrusion 23 of the electric blower 12 31d, an adapter inlet with rib 31d having a diameter larger than the diameter of the fan protrusion 23, and an adapter with rib so as to form a smooth curve from the adapter protrusion 31c with rib to the fan inlet 21 of the electric blower 12 Thirteen adapter ribs 31e are provided on the surfaces of the protrusion 31c and the adapter inlet 31d with ribs.

  Compared with the adapter 30, the adapter 31 with ribs has adapter ribs 31 e protruding on the surfaces of the adapter projections 31 c with ribs and the adapter suction ports 31 d with ribs, and the number of blades of the suction fan unit 19 of the electric blower 12 is adjusted. By providing 13 ribs, air can be more efficiently introduced into the blower inlet 21 of the electric blower 12.

  FIG. 9 is a front view of a grooved adapter 32 which is an improved product of the adapter 30 of the present invention. The grooved adapter 32 is the same as the adapter 30 and the ribbed adapter 31 and is an integrally molded product. Each part is a groove formed so that the surface of the adapter outer circumferential circle 32a with a groove located between the electric blower 12 and the vibration isolating packing 18 and the vibration isolating packing 18 is the same height as the vibration isolating packing 18. Adapter surface 32b with groove, adapter surface 32b with groove and adapter projection 32c with groove configured to conceal fan projection 23 of electric blower 12 and fan of electric blower 12 with grooved adapter projection 32c The grooved adapter inlet 32d having a diameter larger than the diameter of the blower protrusion 23 so that the inlet 21 has a smooth curve, the grooved adapter protrusion 32c, and the grooved adapter inlet 32d on the surface of the adapter 13 grooves 32e are provided.

  Compared with the adapter 30, the grooved adapter 32 has an adapter groove 32e engraved on the surface of the grooved adapter protrusion 32c and the grooved adapter suction port 32d, and matches the number of blades of the suction fan portion 19 of the electric blower 12. By providing the 13 grooves, air can be more efficiently introduced into the blower inlet 21 of the electric blower 12.

  Furthermore, as compared with the adapter 31 with ribs, the grooved adapter 32 does not hit the portion of the main body case 7 at the time of assembly, so that the assemblability can be improved.

1 is an external perspective view of a vacuum cleaner according to an embodiment of the present invention. It is a perspective view of the cleaner body concerning an example of the present invention. It is the figure which looked at the main body case unit of the cleaner body concerning the example of the present invention from the upper part. It is a cutaway side view of the cleaner body concerning the example of the present invention. It is a perspective view of the electric blower unit which concerns on the Example of this invention. It is a cutaway side view of the adapter which concerns on the Example of this invention. It is a main body sectional side view in the state where an adapter concerning an example of the present invention was equipped. It is an improved front view with a rib of the adapter which concerns on the Example of this invention. It is an improved front view with a groove | channel of the adapter which concerns on the Example of this invention.

Explanation of symbols

7 ... Body case, 12 ... Electric blower, 18 ... Anti-vibration packing, 30 ... Adapter, 31 ... Improved adapter.

Claims (7)

In the main body case, the electric blower placed in the back side of the main body case, and the electric vacuum cleaner provided with the anti-vibration rubber between the main body case and the electric blower,
An electric vacuum cleaner, wherein an adapter for increasing the efficiency of air flowing into the electric blower is disposed between the anti-vibration rubber and the electric blower. In the main body case, the electric blower placed in the back side of the main body case, and the electric vacuum cleaner provided with the anti-vibration rubber between the main body case and the electric blower,
Between the anti-vibration rubber and the electric blower, an adapter that increases the efficiency of the air flowing into the electric blower is arranged, and the arranged adapter is detachable, and only the adapter is removed. A vacuum cleaner that can be operated in In the main body case, the electric blower placed in the back side of the main body case, and the electric vacuum cleaner provided with the anti-vibration rubber between the main body case and the electric blower,
An adapter that increases the efficiency of the air flowing into the electric blower is disposed between the anti-vibration rubber and the electric blower, and the outer peripheral portion of the arranged adapter is in contact with the surface of the electric blower. An electric vacuum cleaner. In claim 2,
A vacuum cleaner characterized in that a rib in the same direction as the internal flow of the electric blower is provided in the air inflow portion of the adapter in order to increase the efficiency of air flow. In claim 2,
A vacuum cleaner characterized in that a groove in the same direction as the internal flow of the electric blower is provided in the air inflow portion of the adapter in order to increase the efficiency of air flow. In claim 2,
The vacuum cleaner characterized in that an air inflow portion of the adapter is larger than a radius of an opening end of the electric blower. In claim 2,
The vacuum cleaner characterized in that an outer peripheral diameter of the adapter is smaller than an outer peripheral diameter of the electric blower.

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