JP2007154753A - Blower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blower in which a pressure sensor is integrally assembled, a power source for the pressure sensor is removed from the motor side, a pressure is controlled by the product itself, and the space is saved. <P>SOLUTION: This blower comprises a case body having an impeller storage chamber in which an air inlet is formed at the upper part and an air outlet is formed in the peripheral wall, an impeller rotatably installed in the impeller storage chamber of the case body to suck the air from the air inlet and discharge it from the air outlet, and a motor mounted in the case body and using a hydrodynamic bearing having a rotating member fixed to the impeller. The pressure sensor is installed near the outlet of the impeller storage chamber. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a blower called a sirocco fan or a turbo blower.

  Conventionally, when measuring the flow rate of this type of blower, a pressure sensor for measuring the pressure of air discharged from the discharge port of the blower has been installed separately from the blower.

For this reason, there are disadvantages that separate power sources such as a power source for the motor of the blower and a power source for the pressure sensor are required, and pressure control cannot be performed by the product itself, so that space saving cannot be achieved.
nothing special

  In view of the above-mentioned conventional drawbacks, the present invention incorporates a pressure sensor so that a power source for the pressure sensor can be taken from the motor side, the pressure can be controlled by the product itself, and the space can be saved. The purpose is to provide.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention has a case body having an impeller storage chamber having an air inlet formed in the upper portion and a discharge port formed in a peripheral wall, and is rotatable in the impeller storage chamber of the case body. An impeller capable of sucking air from the attached air inlet and discharging the air from the outlet, and a fluid dynamic pressure bearing attached to the case body and having the impeller fixed to a rotating member are used. In a blower comprising a motor, a blower is constituted by a pressure sensor in the vicinity of the discharge port of the impeller storage chamber.

  As is clear from the above description, the present invention has the following effects.

(1) From a case body having an impeller housing chamber in which an air inlet is formed in the upper part and a discharge port is formed in the peripheral wall, and the air inlet port rotatably mounted in the impeller housing chamber of the case body In a blower comprising an impeller capable of sucking air and being discharged from the discharge port, and a motor using a fluid dynamic pressure bearing attached to the case body and having the impeller fixed to a rotating member, Since the pressure sensor is provided in the vicinity of the discharge port of the impeller storage chamber, the power source for the pressure sensor can be taken from the motor side.
Therefore, the structure can be simplified.

(2) By the above (1), the pressure can be controlled by the product itself, and space saving can be achieved.

(3) According to (1), it can be easily installed.

(4) In the second aspect, the same effects as the above (1) to (3) can be obtained, and the pressure sensor or the pressure sensor chip can be easily assembled because it is attached to the motor board.

  Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

  In the best mode for carrying out the present invention shown in FIGS. 1 to 7, reference numeral 1 denotes a blower according to the present invention. The blower 1 has an air inlet 2 formed in an upper portion thereof and a discharge port 3 formed in a peripheral wall. A case body 5 having an impeller housing chamber 4 formed; a cover body 8 formed with an air suction port 7 fixed by a plurality of screws 6 so as to cover an upper portion of the case body 5; and the case body An impeller 9 that is rotatably mounted in the impeller housing chamber 4 of 5 and can suck air from the air introduction port 2 and discharge it at a higher pressure than the discharge port 3, and the impeller 9 A motor 10 attached to the case body 5 so as to be able to rotate at high speed, and a pressure sensor 13 incorporated in the vicinity of the discharge port 3 of the impeller housing chamber 4 for measuring the pressure of the part. Has been.

  The case body 5 includes a base plate 14, a motor insertion cylinder 16 that is fixed to the base plate 14 with a plurality of screws 15 and covers an outer peripheral portion of the motor 10 and a lower portion of the impeller 9, and the impeller storage chamber. A lower impeller housing wall 17, a peripheral wall 18 in which a part of the discharge port 3 is formed, and a lower case 20 that forms a sealed lower chamber 19 with the base plate 14, and the lower case An air inlet 2 and an upper valve recessed portion 23 of the upper valve portion 22 are formed in the central portion fixed by a plurality of screws 21 at the upper portion of 20, covering the upper portion of the impeller 9, An upper impeller housing wall 24, a peripheral wall 25 in which a part of the discharge port 3 is formed, and an upper case 27 in which a mounting portion 26 is attached to the cover body 8 with a plurality of screws 6 so as to cover the upper part. It consists of

As shown in FIGS. 4 and 5, the motor 10 includes a substrate 29 provided with a motor drive circuit (not shown) fixed on the upper surface of the base plate 14 of the case body 5 with a plurality of screws 28; A base plate 30 fixed to the base plate 14 with a plurality of screws 28 for mounting the substrate 29, a shaft 12 having a lower end fixed to the base plate 30, and an upper portion protruding onto the substrate 29, A sleeve 11 rotatably disposed on the outer peripheral portion, a coil 31 attached to the substrate 29 so as to be positioned on the outer peripheral portion of the sleeve 11, and an upper portion of the shaft 12 fixed to the upper portion of the sleeve 11 A hub 33 which covers and has a shaft portion 32 with the center upper portion to which the impeller 9 is attached, and the sleeve 11 and the coil 31 attached to the hub 33. Between the back yoke 34 positioned between them, the yoke 36 with the rotor magnet 35 mounted on the inner wall surface mounted on the outer periphery of the hub 33, and the recess 37 formed in the hub 33 at the upper position of the shaft 12. The outer magnet 38 is fixed to the outer magnet 38, and the inner magnet 39 is fixed to the upper end of the shaft 12 so as to be positioned in the outer magnet 38.

As shown in FIGS. 6 and 7, the impeller 9 includes a boss 40 fitted and fixed to a shaft portion 32 of a hub 33 serving as a rotating member of the motor 10, and a sequentially outer lower portion integrally formed with the boss 40. A blade support plate 41 inclined to the surface, a plurality of blade plates 42 that are integrally formed on the upper surface of the blade support body 41 and are formed in an arc shape so that the height dimension is gradually reduced on the outside, and the plurality of blade plates 42 An upper cover plate 44 having an upper valve piece 43 at a central end integrally formed so as to cover the upper portion of the blade plate 42 and the motor 10 integrally formed so as to protrude downward on the blade support plate 41. The motor cover cylinder 46 is inserted between the outer periphery of the yoke 36 and the motor insertion hole 45 of the motor insertion cylinder 16 of the lower case 20 of the case body 5.

  The pressure sensor 13 is attached to the upper case 27 in the vicinity of the discharge port 3 of the impeller housing chamber 4 so as to be able to measure the pressure of the part, and provided with a connection terminal 47 connected to a power source for the motor. Yes.

In the blower 1 having the above-described configuration, when the motor 10 is driven, the impeller 9 rotates at high speed, and air is supplied from the air suction port 7 of the cover body 8 and the air introduction port 2 of the case body 5 to a large number of impellers of the impeller 9. The air is sucked into 42, and the pressure is increased and discharged from the discharge port 3.
The air with increased pressure discharged from the discharge port 3 can be detected by the pressure sensor 13, and the flow rate which is the pressure of the product itself by detecting the pressure by the pressure sensor 13 and controlling the driving state of the motor. It is possible to perform control such as setting to a predetermined value.
Moreover, even if it is small, it can be discharged with a large amount of air and high pressure.
[Different forms for carrying out the invention]

  Next, different modes for carrying out the present invention shown in FIGS. 8 to 22 will be described. In the description of these different modes for carrying out the present invention, the same components as those in the best mode for carrying out the present invention are designated by the same reference numerals and redundant description is omitted. To do.

  The second embodiment for carrying out the present invention shown in FIGS. 8 to 10 is mainly different from the best first embodiment for carrying out the present invention in that the outlet 3 of the impeller housing chamber 4 is different. In the blower 1A configured as described above, the pressure sensor 13A is incorporated into the substrate 29 and is inserted and fixed so that the pressure can be detected in the sensor insertion hole 48 formed in the lower case 20 in the vicinity of The same effects as the first preferred embodiment for carrying out the present invention can be obtained, and the pressure sensor 13A is attached to the substrate 29, so that wiring is not required and can be assembled more easily.

  The third embodiment for carrying out the present invention shown in FIGS. 11 to 13 is different from the second embodiment for carrying out the present invention in that it is attached to the sensor insertion hole 48 of the lower case 20. Since the pressure sensor 13 is incorporated into the substrate 29 via the pressure introduction hose 49, the blower 1B configured as described above can obtain the same effects as the second embodiment for carrying out the present invention. It is done.

  The fourth embodiment for carrying out the present invention shown in FIGS. 14 to 16 is mainly different from the second embodiment for carrying out the present invention in the sensor insertion hole 48 of the lower case 20. The blower 1C incorporating the pressure sensor chip 50 in this way is attached to the substrate 29 and mounted in such a manner that the pressure sensor chip 50 is positioned in the impeller housing chamber 4. The same effects as those of the second embodiment for implementation can be obtained.

  The fifth embodiment for carrying out the present invention shown in FIGS. 17 to 19 is mainly different from the second embodiment for carrying out the present invention in that a pressure sensor chip 50 is provided on a substrate 29, and The sensor insertion hole 48A that covers the pressure sensor chip 50 in a sealed state is formed in the lower case 20, and thus the fan 1D configured in this way has the same function as the second embodiment for carrying out the present invention. An effect is obtained.

  The sixth embodiment for carrying out the present invention shown in FIGS. 20 to 22 is mainly different from the fifth embodiment for carrying out the present invention in that the sleeve 11A is fixed to the base plate 14 and the shaft Even in the blower 1E configured using such a motor 10A in that the motor 10A in which 12A is rotatably attached to the sleeve 11A is used, the same operation as that of the fifth embodiment for carrying out the present invention is performed. An effect is obtained.

  The present invention is used in the industry for manufacturing blowers.

1 is a front view of the best first embodiment for carrying out the present invention. The top view of the best 1st form for implementing this invention. Sectional drawing which follows the 3-3 line of FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. The principal part expansion explanatory drawing of the best 1st form for implementing this invention. The top view of the impeller of the 1st best form for implementing this invention. Sectional drawing in alignment with line 7-7 in FIG. The top view of the 2nd form for carrying out the present invention. Sectional drawing which follows the 9-9 line of FIG. The principal part expansion explanatory drawing of the 2nd form for implementing this invention. The top view of the 3rd form for carrying out the present invention. Sectional drawing which follows the 12-12 line of FIG. The principal part expansion explanatory view of the 3rd form for carrying out the present invention. The top view of the 4th form for carrying out the present invention. FIG. 15 is a sectional view taken along line 15-15 in FIG. 14; The principal part expansion explanatory drawing of the 4th form for implementing this invention. The top view of the 5th form for implementing this invention. FIG. 18 is a sectional view taken along line 18-18 in FIG. 17; The principal part expansion explanatory drawing of the 5th form for implementing this invention. The top view of the 6th form for carrying out the present invention. Sectional drawing which follows the 21-21 line of FIG. The principal part expansion explanatory view of the 6th form for carrying out the present invention.

Explanation of symbols

1, 1A, 1B, 1C, 1D, 1E: blower,
2: air inlet, 3: outlet
4: Impeller storage room, 5: Case body,
6: Screw, 7: Air suction port,
8: Cover body, 9: Impeller,
10, 10A: Motor, 11, 11A: Sleeve,
12, 12A: shaft, 13, 13A: pressure sensor,
14: Base plate, 15: Screw,
16: Motor insertion cylinder, 17: Lower impeller storage wall,
18: Perimeter wall, 19: Lower chamber,
20: Lower case, 21: Screw,
22: Upper valve part, 23: Upper valve recessed part,
24: Upper impeller storage wall, 25: Perimeter wall,
26: mounting portion, 27: upper case,
28: Screw, 29: Substrate,
30: Base plate, 31: Coil,
32: Shaft part, 33: Hub,
34: Back yoke, 35: Rotor magnet,
36: York, 37: Recess,
38: Outer magnet, 39: Inner magnet,
40: boss, 41: blade support plate,
42: vane plate, 43: upper valve piece,
44: Upper cover plate, 45: Motor insertion hole,
46: motor cover cylinder, 47: connection terminal,
48, 48A: sensor insertion hole, 49: pressure introduction hose,
50: Pressure sensor chip.

Claims (2)

Air is sucked from the case body having an impeller housing chamber having an air inlet formed in the upper part and a discharge port formed in the peripheral wall, and the air inlet port rotatably mounted in the impeller housing chamber of the case body. In the blower comprising an impeller that can be discharged from the discharge port, and a motor that uses a fluid dynamic pressure bearing that is attached to the case body and has the impeller fixed to a rotating member. A blower characterized in that a pressure sensor is provided in the vicinity of the discharge port of the chamber. A base plate to which a board provided with a motor drive circuit is attached, a lower case attached to the base plate and having a lower impeller housing wall formed thereon, and attached to cover the upper portion of the lower case. An upper case formed with an upper impeller housing wall, and an air inlet and exhaust formed so as to be located in one or both of the lower case and the upper case so as to open to the impeller housing chamber. A case body composed of an outlet, an impeller capable of sucking air from the air inlet port rotatably mounted in the impeller housing chamber of the case body, and discharging the air from the discharge port; and the case body In a blower comprising a motor using a fluid dynamic pressure bearing in which the impeller is fixed to an attached rotating member, pressure can be measured in the vicinity of the discharge port of the impeller storage chamber. Sea urchin, blower, characterized in that a pressure sensor or pressure sensor chip attached to the substrate.

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