JP4168661B2 - Central cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a central cleaner for a private room.
[0002]
[Prior art]
A conventional general central cleaner will be described with reference to FIGS.
[0003]
In the figure, reference numeral 1 denotes a central cleaner body installed outside the room. The main body 1 includes a suction electric blower 10 and a dust collection chamber 3 having a dust separation filter 2 provided on the suction side of the electric blower 10. Built-in. Reference numeral 4 denotes a dust collection pipe branched from the central cleaner body 1 into the room. One end of the dust collecting tube 4 is connected to the suction hole 5 of the central cleaner body 1 facing the room through the outer wall 8 of the house, and the other branched ends are opened into the respective rooms to constitute the outlet part 7. . A hose / extension pipe having a suction nozzle 6 is detachably attached to the outlet portion 7.
[0004]
When the hose / extension pipe having the suction nozzle 6 is connected to the outlet section 5 of the room to be cleaned and the central cleaner body 1 is operated, the suction nozzle 6 communicating with the suction section of the electric blower 10 through the dust collection pipe 4. Thus, a suction force is generated, and the dust collection in the room is sucked in a flow as indicated by an arrow 11. The sucked dust is accumulated in the dust collection chamber 3, and then the air is discharged from the exhaust port 9 to the outside.
[0005]
The advantage of this central cleaner is that the central cleaner body 1 incorporating the electric blower 10 can be installed outdoors, so that the indoor side has low noise and can be exhausted outdoors, so a clean environment can be obtained.
[0006]
[Problems to be solved by the invention]
However, since the conventional central cleaner has a large pressure loss of the dust collection pipe 4 piped indoors, a large capacity is required for the electric blower 10, a large central cleaner body 1 is required, and an existing house There are issues such as being unsuitable for extension work.
[0007]
An object of the present invention is to solve the above-described conventional problems, and to provide a central cleaner for a private room that is space-saving and can be easily installed in an existing house.
[0008]
[Means for Solving the Problems]
To achieve the above object, Central cleaner of the present invention, communicates with the outer wall and out of the housing established the electric dynamic blower duct provided, the indoor side is a suction side of the electric blower dust collection chamber The hose having a suction nozzle is detachably connected to the dust collection chamber, and the electric blower can be rotated forward and backward, and air is sucked from the suction nozzle through the dust collection chamber during the forward rotation of the electric blower. In the reverse rotation, outside air is supplied to the room through a filter .
[0009]
As a result, it is possible to provide a central cleaner for a private room that is space-saving and easy to install in an existing house.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, an electric blower is installed in a duct that communicates the inside and outside of the outer wall of a house, and a dust collection chamber is installed on the indoor side that is the suction side of the electric blower. thereby detachably connected a hose with a suction nozzle in the chamber, the electric blower to allow forward and reverse directions, wherein the forward rotation of the electric blower draws air from the suction nozzle through the dust collection chamber, the outside air through the filter at the time of reverse rotation by was central cleaner that is supplied to the chamber, in addition to the dust collection, in which can be taken outside air into the chamber.
[0011]
【Example】
Hereinafter, the central cleaner of the present invention will be described with reference to the drawings.
[0012]
(Reference Example 1)
A central cleaner in Reference Example 1 of the present invention will be described with reference to FIGS.
[0013]
In FIG. 1, reference numeral 20 denotes a centrifugal fan type electric blower, which is installed in a duct 21 provided so as to communicate with the inside and outside of an outer wall 25 of a housing such as a housing complex, with an intake port 20 a facing the indoor side 23. 26 is an anti-vibration rubber for anti-vibration support of the electric blower 20 inside the duct 21 and has a ring shape as shown in FIG. 5, and the inner peripheral hole 26b is press-fitted and fixed to the housing part 42f of the electric blower 20. The outer peripheral portion 26 c is press-fitted and fixed to the inner peripheral side 21 a of the duct 21. Further, a plurality of notches are provided on the outer periphery of the vibration isolating rubber 26 to constitute an exhaust communication hole 26a.
[0014]
An anti-vibration seal 27 also serving as an anti-vibration rubber made of a ring-shaped rubber material is attached around the intake port 20 a of the electric blower 20 and the inner peripheral side 21 a of the duct 21. The seal is done.
[0015]
In the above vibration-proof configuration, the vicinity of the rotating shaft of the electric blower 20 can be supported, flexible support for vibration in the rotational direction can be configured, and the radial thickness of the vibration-proof rubber 26 and the vibration-proof seal 27 can be configured. In other words, since the distance between the mounting side of the electric blower 20 and the mounting side of the duct 21 can be increased, flexible support in the radial direction is possible, and the vibration-proofing effect is excellent against vibrations in all directions. can do.
[0016]
As shown in detail in FIGS. 1 and 5, a cyclone type dust collection chamber 28 is installed on the indoor side 23 of the duct 21 that is the suction side of the electric blower 20. Further, an indoor substrate 35 provided with a communication pipe 34 communicating with the duct 21 at the center is fixed to the indoor surface 25 a of the outer wall 25 provided with the duct 21. The dust collection chamber 28 is a circular and transparent one having a detachable lid 28a. An outer peripheral groove 28b is formed on the outer peripheral surface 28e, and a connecting pipe 29 is attached in the tangential direction at the same time. An intake cylinder 28d that is detachably and rotatably attached around the pipe 34 is provided.
[0017]
As shown in FIGS. 3 and 4, a connection portion 33 is provided at the end of the connection tube 29 so that the hose attachment portion 32 a of the hose 32 communicating with the suction nozzle 30 and the extension tube 31 can be connected freely. ing. Since the dust collection chamber 28 is rotatable as will be described later, as shown in the figure, the connection portion 33 can be rotated to a free position to be connected to the hose attachment portion 32a.
[0018]
The attachment of the dust collection chamber 28 will be described with reference to FIG. 5 to FIG. 7. The locking tool 36 attached to the indoor substrate 35 by inserting and fitting the intake cylinder 28 d of the dust collection chamber 28 to the outer periphery of the communication pipe 34 of the indoor substrate 35. The dust collecting chamber 28 is rotatably attached to the indoor substrate 35 by fitting the flange portion 36a into the outer peripheral groove 28b of the dust collecting chamber 28 from above and fixing the locking tool 36 to the indoor substrate 35 with screws 35b. It has been.
[0019]
Next, the fine dust collecting portion 37 provided on the outdoor surface on the exhaust side of the electric blower 20 will be described with reference to FIGS. 1 and 2. The fine dust collecting portion 37 includes an outdoor substrate 37a having a communication hole 37d connected to the end of the duct 21 and fixed to the outdoor surface 25b of the outer wall 25, a case 37e provided with a plurality of exhaust ports 37b, and an exhaust port. It consists of a fine filter 37c facing the surface 37b and installed inside the case 37e. The structure seen from the exhaust port 37b side of the fine dust collection part 37 is shown in FIG.
[0020]
Next, FIGS. 8 and 9 show details of the electric blower 20.
[0021]
As shown in the figure, reference numeral 40 denotes a mixed flow type centrifugal fan having a plurality of blades 40a and 40b fixed to an output shaft 42e of an electric motor 42, and a stationary blade 44 composed of a plurality of diffusers around the periphery thereof. is set up. Reference numeral 45 denotes a fan case, which encloses the stationary blade 44 and the centrifugal fan 40 and constitutes a ventilation path 46 between the frame 42a of the electric motor 42. The electric motor 42 includes a stator 42b provided with windings, a rotor 42d supported by a bearing 42c and having magnets disposed on the surface thereof, and a frame 42a in which these are built. The frame 42a has no vent hole and has a fully closed configuration. The type of the electric motor 42 is a permanent magnet type brushless motor. An arrow 48 indicates the flow of airflow.
[0022]
Next, the operation of the central cleaner in this reference example will be described.
[0023]
When the extension pipe 31 and the hose 32 to which the suction nozzle 30 is attached are attached to the connection portion 33 and the electric blower 20 is driven, the airflow flows from the suction nozzle 30, passes through the electric blower 20, flows to the exhaust port 37 b, and the suction nozzle 30. This makes it possible to collect suction dust in the room. The sucked air flow including dust flows in the tangential direction as indicated by an arrow 48 through the connecting pipe 29 into the dust collecting chamber 28 (FIG. 1B), and rotates at a high speed along the inner wall of the dust collecting chamber 28. To do. At this time, a large centrifugal force acts on the dust, the dust is separated and accumulated outside, and only the airflow is sucked into the intake port 20a of the electric blower 20 through the central intake cylinder 28d and the communication pipe 34. Although the airflow flowing into the electric blower 20 includes a small amount of fine dust, it is not so large as to damage the blades 40a and 40b of the centrifugal fan 40, and passes through the ventilation path 46, and the fine dust collection on the outdoor side 24. Fine dust is separated when passing through the fine filter 37c of the portion 37, and an air flow that hardly contains dust is exhausted from the exhaust port 37b.
[0024]
In this reference example, since the electric motor 42 of the electric blower 20 has a fully closed structure, the airflow flows outside the electric motor 42 and does not pass through the inside. Therefore, the rotating portion such as the bearing 42c, the rotor 42d, and the stator 42b. There is no risk of damaging the current-carrying parts. Since the fine dust collecting portion 37 is installed outdoors, its surface area can be sufficiently increased, and even if the number of maintenance is reduced, an increase in pressure loss does not become a problem in actual use. As shown in FIGS. 6 and 7, the dust accumulated in the dust collection chamber 28 can be removed by removing the entire dust collection chamber 28 from the indoor substrate 35 and opening the lid 28a.
[0025]
Since the dust collection chamber 28 is rotatable, the connection portion 33 with the hose 32 can be disposed at an arbitrary position in the rotation position, and the connection portion 33 can be disposed at a convenient position according to the form of the room to be attached.
[0026]
Further, even if there is no fine dust collecting portion 37, the exhaust is exhausted to the outside of the room, so there is no problem in practical use even if somewhat fine dust is mixed in the exhaust.
[0027]
The case 37e of the fine dust collecting portion 37 can be removed from the outdoor substrate 37a, and the fine filter 37c can be maintained.
[0028]
According to the above configuration, there is no need for a long pipe and exhaust is exhausted to the outside of the room, so that it is not necessary to provide a fine filter on the intake side and the indoor side. Further, since the fine filter 37c can be provided outside the room, the area can be sufficiently increased, the pressure loss can be reduced, and an electric blower having a small capacity can be practically sufficiently cleaned.
[0029]
In this reference example, in order to dispose the electric blower in the duct 21 having an inner diameter of about 100 mm, a small high-speed electric blower that rotates at 60000 r / min or more is used.
[0030]
(Reference Example 2)
Next, Reference Example 2 of the present invention will be described with reference to FIGS. Since the overall configuration of the central cleaner is the same as that of the reference example 1, the description will focus on the differences.
[0031]
As described in Reference Example 1, the electric blower does not require piping as compared with the conventional central cleaner, and a configuration with a small pressure loss can be realized. Therefore, an electric blower with a relatively small generated pressure can be used.
[0032]
Therefore, the axial flow type electric blower 54 as shown in the figure is used. The electric motor 55 includes a stator 55b provided with windings, a rotor 55d fixed to an output shaft 55e supported by a bearing 55c, and a magnet disposed therein, and a frame 55a incorporating these. The frame 55a has no vent hole and has a fully closed configuration. The type of the electric motor 55 is a permanent magnet type brushless motor. The output shaft 55e of the electric motor 55 has a stationary blade 56 and a moving blade 57 having a plurality of blades. The stationary blade 56 is disposed on the downstream side of the moving blade 57 and performs pressure recovery of the air flow generated by the moving blade 57. In this reference example, there are two sets of the stationary blades 56 and the moving blades 57, and the two-stage axial flow type electric blower 54 is configured. The electric motor 55, the moving blade 57, and the stationary blade 56 are enclosed in a fan case 58 having an intake port 58a and an exhaust port 58b.
[0033]
As in Reference Example 1, an arrow 48 indicates the flow of airflow, and dust collection and dust removal are performed.
[0034]
(Reference Example 3)
Next, Reference Example 3 of the present invention will be described with reference to FIG. Since the overall configuration of the central cleaner is the same as in Reference Examples 1 and 2, the description will focus on the differences.
[0035]
This reference example further improves the performance of the vibration isolating support of the electric blower. Reference numeral 50 denotes a disk-shaped indoor support substrate fixed to the indoor side wall surface of the outer wall 25, and has a cylindrical support collar portion 50a. Reference numeral 51 denotes an outdoor support substrate having a similar configuration and fixed to the outdoor wall surface, and similarly, a support collar portion 51a is formed. An outer cylinder 52 also serves as a fan case 58 of the electric blower 54, and its outer diameter is slightly smaller than the inner diameter of the duct 21.
[0036]
That is, when the outer cylinder 52 incorporating the electric blower 54 is installed in the duct 21, the outer cylinder 52 has a gap 49 of 2 to 3 mm on the outer peripheral portion. 53 is a ring-shaped anti-vibration rubber, which is inserted and attached to both ends of the outer cylinder 52, each of which is between the support collar 52a at the end of the outer cylinder 52 and the support collar 50a of the indoor support substrate 51, And it attaches by inserting between the support collar parts 51a of the outdoor support substrate 51, respectively. The dust collection chamber (not shown) is attached by being fixed to the indoor support substrate 50 as in the above-described reference example.
[0037]
With the configuration as described above, the outer diameter of the anti-vibration rubber 53 can be made sufficiently large, and a flexible and accurate support configuration can be realized. Further, the anti-vibration rubber 53 does not hinder the ventilation path of the electric blower 54, and a configuration with a small pressure loss can be realized. This configuration is particularly effective when the axial flow type electric blower 54 having a large inlet diameter is used.
[0038]
In addition, a configuration in which the dust collection chamber on the indoor side is limited to separation of coarse dust and main dust separation is performed in the fine dust collection unit on the outdoor side is also possible.
[0039]
(Reference Example 4)
A central cleaner according to Reference Example 4 of the present invention will be described with reference to FIGS. Since the basic configuration is substantially the same as in Reference Example 1, differences will be described.
[0040]
In this reference example, an electric blower 20 is built in the duct 21 of the outer wall 25, and a dust collection chamber 60 containing a dust collection paper bag 61 on the indoor side 23 is a silencer means for silencing exhaust on the outdoor side 24. A sound deadening box 62 is installed. The dust collection chamber 60 is attached to an attachment substrate 64 fixed to the indoor side of the outer wall 25. A lid 60a is detachably attached to the dust collecting chamber 60 so that the dust collecting paper bag 61 can be taken out freely. A hose connection portion 63 is installed at the lower part of the dust collection chamber 60, and the hose 32 communicating with the suction nozzle 30 is connected thereto.
[0041]
A connection hole 62a is provided in the lower part of the sound deadening box 62, and the internal space communicates with the duct 21 through the connection hole 62a. An exhaust long hole 62b is installed at a position diagonal to the connection hole 62a, and a sound absorbing material 62d is attached to the wall surface of the air passage 62c between the connection hole 62a and the exhaust long hole 62b. Is made. The exhaust slot 62b is equipped with a louver 62e that prevents raindrops and the like from entering the exhaust slot 62b.
[0042]
Here, the dust collected and sucked is separated by the dust collection paper bag 61, the dust is accumulated in the dust collection paper bag 61, and only the air passes through the electric blower 20 and is exhausted from the exhaust long hole 62 b of the sound deadening box 62. Is done. Since the silencing box 62 is installed outdoors, a silencing box with a sufficient volume can be installed, and the exhaust noise of the electric blower 20 is sufficiently silenced by the silencing box 62, so that low noise operation can be realized. On the indoor side 23, the lengths of the hose 32 and the extension pipe 31 are sufficiently long, so that the noise of the electric blower 20 is sufficiently muted before reaching the suction nozzle 30.
[0043]
(Reference Example 5)
Next, Reference Example 5 of the present invention will be described with reference to FIG. Since the basic configuration is substantially the same as in Reference Example 1, differences will be described.
[0044]
As shown in the figure, at least one slit-like bulging portion 70 is provided in the middle of the path of the air sucked from the suction nozzle by the electric blower 54 to form a silencer. In this reference example, slit-like expansion portions 70 are provided at both ends of the electric blower 54 or both ends of the duct 21 to reduce narrow-band noise having a constant frequency such as wind noise caused by the blades of the electric blower 54. It can be easily realized from the configuration. As shown in FIG. 16, a slit groove 53 a serving as a slit-like bulging portion 70 is provided on the inner periphery of the vibration-proof rubber 53, and a plurality of opening holes are formed in the fan case portion of the electric blower 54, that is, the outer cylinder 52 portion. By providing 52a, it is possible to obtain the same silencing effect as described above.
[0045]
( Example)
For Central cleaner definitive in Kazumi facilities of the present invention will be described with reference to FIG. Since the basic configuration is substantially the same as in Reference Example 1, differences will be described.
[0046]
As shown in the drawing, an axial-flow type electric blower 80 built in the duct 21 of the outer wall 25 is capable of forward and reverse rotation. During forward rotation, air is sucked from the suction nozzle through the dust collection chamber 82, and during reverse rotation, the outside air is passed through the intake filter 92. Can be supplied indoors. On the indoor side wall surface 25 a, an indoor exhaust part 81 composed of an indoor filter exhaust port 88 and an exhaust filter 91 and a dust collection chamber 82 containing a dust collection paper bag 83 communicate with the duct 21 via an indoor switching valve 85. It is attached to do. That is, the duct 21 communicates with the dust collection chamber 82 or the indoor exhaust part 81 depending on the position of the indoor side switching valve 85.
[0047]
The outdoor side 24 is provided with an outdoor intake section 84 including an outdoor filter intake port 89, an upper exhaust port 87, and an intake filter 92 that covers the outdoor filter intake port 89. The upper exhaust port 87 is opened and closed by an outdoor switching valve 86.
[0048]
In a normal cleaning operation, an extension pipe / hose communicating with the suction nozzle is connected to the connecting portion 33 of the dust collecting chamber 82, the electric blower 80 is rotated forward, and the dust collecting chamber 82 and the electric motor are electrically driven as shown in FIG. If the indoor switching valve 85 is switched so that the blower 80 communicates, and the outdoor switching valve 86 is switched so that the upper exhaust port 87 is opened, the sucked dust is separated and accumulated in the dust collecting paper bag 83, and the electric blower 80 is turned on. The exhaust that has passed is exhausted from the upper exhaust port 87 of the outdoor intake portion 84 where the pressure loss is small.
[0049]
In the ventilation operation, the electric blower 80 is reversed to change the air flow from the outdoor side 24 to the indoor side 23, and the indoor side switching valve 85 is switched so that the indoor filter exhaust port 88 and the electric blower 80 communicate with each other. 24 switches the outdoor switching valve 86 to the side closing the upper exhaust port 87 (FIG. 17A). The airflow in the outdoor side 24 passes through the intake filter 92 and is purified, passes through the electric blower 80, passes through the indoor exhaust filter 91, and is further purified and exhausted into the room. An arrow 90 indicates the flow of airflow.
[0050]
The air that has been purified by the filters 91 and 92 and has flowed into the indoor side 23 is exhausted through a door, a gap between windows, or the like. That is, the atmospheric pressure is slightly higher in the room than in the atmosphere, and contaminated air does not enter the room through a gap or the like, so that the room is always kept clean.
[0051]
During suction ventilation, the pressure loss of the filters 91 and 92 is smaller than that of the hose / extension pipe and suction nozzle, and can be operated with a smaller output than during cleaning, and power consumption and noise are small even during normal operation.
[0052]
The configurations of the reference examples 1 to 5 and the examples can be combined as appropriate, and are not limited to the configurations of the examples alone.
[0053]
【The invention's effect】
As described above, according to the central cleaner of the present invention, it is possible to provide a single room central cleaner that is space-saving and can be easily installed in an existing house.
[Brief description of the drawings]
1A is a cross-sectional view of a central cleaner in Reference Example 1 of the present invention. FIG. 1B is a cross-sectional view taken along line AA of FIG. 2A. FIG. 2 is a plan view showing a fine dust collecting portion of the central cleaner. 3] Overall perspective view including the suction nozzle of the central cleaner [Fig. 4] Overall perspective view including the suction nozzle when the dust collection chamber of the central cleaner is rotated [Fig. 5] (a) Expansion of the central cleaner Sectional view (b) Side view showing the anti-vibration rubber of the central cleaner (c) Front view of the central cleaner showing the anti-vibration seal BB (a) [Fig. 6] (a) Dust collection of the central cleaner (B) Disassembled cross-sectional view of the dust collecting chamber of the central cleaner [Fig. 7] Exploded front view showing the indoor substrate and the locking tool of the central cleaner [Fig. 8] electric Sectional view showing a wind machine [9] a perspective view of a reference sectional view showing an electric blower of a central cleaner in Example 2 [11] the electric blower perspective view FIG. 10 is the invention showing a centrifugal fan of the electric blower [ 12A is a front sectional view showing the vibration isolation configuration of the central cleaner in Reference Example 3 of the present invention. FIG. 12B is a side view of the vibration isolation configuration. FIG. 13A is the central cleaner in Reference Example 4 of the present invention. (B) Side view showing the sound deadening box portion of the central cleaner (c) Side view showing the dust collection chamber portion of the central cleaner [FIG. 14] State with the dust box lid of the central cleaner removed overall block diagram FIG. 15 (a) a-a sectional view [16] the central cross-sectional view showing a silencer arrangement Central cleaner in reference example 5 of the present invention (b) (a) comprising a suction nozzle in the Sectional view showing another muffling structure of Lina Figure 17 (a) a front sectional view (b) a front sectional view when the cleaning of the same central cleaner ventilation operation of definitive central cleaner to an embodiment of the present invention FIG. 18] Overall perspective view showing the configuration of a conventional central cleaner [FIG. 19] Cross-sectional view showing the conventional central cleaner body [Explanation of symbols]
20, 54, 80 Electric blower 25 Outer wall 21 Duct 28, 60, 82 Dust collection chamber 30 Suction nozzle 31 Extension pipe 32 Hose 26, 53 Anti-vibration rubber 27 Anti-vibration seal 25a, 25b Wall surface 37 Fine dust collection part 49 Clearance 52 Outer cylinder 53a Slit groove 70 Slit-like expansion part 85 Indoor side switching valve 86 Outdoor side switching valve 91 Exhaust filter 92 Intake filter

Claims (1)

An electric blower is installed in a duct that connects the inside and outside of the outer wall of the house, a dust collection chamber is installed on the indoor side that is the suction side of this electric blower, and a hose that has a suction nozzle is attached to and removed from this dust collection chamber thereby freely connected, the electric blower to allow forward and reverse rotation, and as the the forward rotation of the electric blower draws air from the suction nozzle through the dust collection chamber, in the reverse rotation to supply the outside air through the filter to said chamber Central Cleaner.

Images