JPH11210632A - Suction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the recovery of the function degradation due to the invasion of dirts, as well as to provide a stable suction pressure. SOLUTION: This suction device carries out a suction by generating a negative pressure by the variation of the inner capacity of a pump chamber 12 by the reciprocating drive of a diaphragm 10. While a partition wall to partition the diaphragm 10 and the installing parts of suction and discharge valves is provided, a passage hole 14 to communicate the diaphragm 10 side and the installing parts of the suction and discharge valves is provided at the center of the partition wall. When the diaphragm 10 is operated, the gas suction and gas exhaust are carried out from the passage hole 14, observed from the diaphragm 10 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device using a diaphragm pump.

[0002]

2. Description of the Related Art A suction device for a suction-type beautifier uses a diaphragm pump. This diaphragm pump generally has a diaphragm disposed on an opening surface of a concave portion of a pump case having a concave portion and a pump. By fixing the peripheral edge of the diaphragm between the case and the cover, a pump chamber is formed between the diaphragm and the pump case. In this pump chamber, an intake valve and an exhaust valve are also provided directly on the pump case or the cover, or provided at a portion connected by a ventilation groove provided on the pump case or the cover.

[0003]

That is, since the intake valve and the exhaust valve are located at different positions when viewed from the diaphragm, and since both valves are operated in different directions, the diaphragm which is an elastic body is not operated during the operation. It operates under the influence of the position of the intake valve and the position of the exhaust valve, so that a stable air flow (or liquid flow) cannot be obtained, and therefore the pressure is not stable.

In addition, there is a problem that during a long period of use, dust and the like accumulate in the passages of the intake valve and the exhaust valve and adhere to the valves to lower the suction function. Further, a filter is provided on the suction side to prevent foreign matter from entering, but even if the filter becomes clogged with foreign matter, it cannot be removed or is difficult to remove.

[0005] The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to obtain a stable suction pressure. Another object of the present invention is to provide a suction device capable of recovering, and another object of the present invention is to provide a suction device in which foreign substances clogged in a filter are easily removed and a suction / discharge valve is easily disassembled and cleaned. is there.

[0006]

According to the present invention, there is provided a suction apparatus for performing suction by generating a negative pressure by a change in the internal volume of a pump chamber due to reciprocal driving of the diaphragm. A partition wall for partitioning the disposition portion is provided, and a through hole for communicating the diaphragm side in the pump chamber and the disposition portion for the suction / discharge valve is provided in a center portion of the partition wall at a position facing the diaphragm. It has features. When the diaphragm is operated, the intake and exhaust are performed through the through holes when viewed from the diaphragm.

It is more preferable that the through-hole is provided on an extension line in the reciprocating direction of the connecting portion of the diaphragm with the drive system for reciprocating drive, as compared with the case where the through-hole faces the elastic portion of the diaphragm. Obtainable. It is preferable that the opening edge of the through hole on the diaphragm side is formed as a chamfered surface or a curved surface because dirt does not easily accumulate.

[0008] In the case where a filter is provided at the end of the intake hole connected to the pump chamber via the intake valve, the filter may have a convex shape protruding outward. Also,
It is preferable to provide a protection frame portion having a higher projecting height toward the outside than the filter on the outer peripheral side of the intake hole. Further, if the suction / discharge valve is fixed between the cover detachable from the partition wall side member and the partition wall side member, maintenance of the suction / discharge valve can be performed by removing the cover.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment of the present invention will be described. FIGS. 2 and 3 show a suction-type beautifier provided with a suction device according to the present invention. The housing 2 has a motor 3 and a battery 4 built therein, a diaphragm pump 1 as a suction device at one end side, a switch handle 5 on the front side, and an attachment 6 detachably mounted on one end side. Have been. In the figure, reference numeral 20 denotes a circuit board provided with a switch section and the like, and reference numeral 21 denotes a holding frame for the motor 3 and the diaphragm pump 1.

The diaphragm pump 1 is mounted on the holding frame 21.
The diaphragm 10 is disposed on one side of the pump case 13, and the periphery of the diaphragm 10 is clamped and fixed between the pump case 13 and the holding frame 21.
An eccentric shaft 22 fixed to the output shaft of the motor 3 is connected to a connecting portion 11 provided at the center of the diaphragm 10. The diaphragm 10 reciprocates.

A cover 16 is provided on the other side of the pump case 13.
The cover 16 and the pump case 1 are attached.
3, an intake valve 17 and an exhaust valve 18 are provided. The pump chamber 12 is connected to a portion where the intake valve 17 and the exhaust valve are disposed through a through hole 14 penetrating the center of the pump case 13, and further a vent hole penetrating the cover 16 through the intake valve 17. It is connected to 30. A filter 31 is provided at the tip of the ventilation hole 30, and the attachment 6 has a hole connected to the cover 16 and connected to the ventilation hole 30.

When the diaphragm 10 is driven by operating the motor 3, the intake valve 17 and the exhaust valve 18 are opened and closed according to the change in the internal volume of the pump chamber 12, and the intake valve 17 is opened to allow air to enter the pump chamber 12. When taking in the skin, if the opening edge of the attachment 6 is brought into close contact with the skin, the skin will be sucked. Here, when the diaphragm 10 operates, a portion of the pump chamber 12 where the diaphragm 10 is provided and a portion where the intake valve 17 and the exhaust valve 18 are provided are partitioned by the pump case 13. The portions are connected by a through hole 14, so that although the intake and exhaust accompanying the operation of the diaphragm 10 are performed through the intake valve 17 and the exhaust valve 18, the intake is viewed from the diaphragm 10. Air is exhausted through the through hole 14.
For this reason, even if the positions of both the intake valve 17 and the exhaust valve 18 are greatly shifted, the elastic portion of the diaphragm 10 changes the space in the pump chamber 12 to perform suction and discharge without being affected by the positions. Particularly, in the illustrated example, the through-holes 14 are provided on the extension line of the diaphragm 10 in the reciprocating direction of the connecting portion 11, so that the elastic portion of the diaphragm 10 performs more stable movement. ing.

Further, since the intake air and the exhaust air pass through the through hole 14, a reciprocating flow can be obtained with a vigorous flow. Therefore, when the dirt or dust is accumulated inside the cleaning liquid, the cleaning liquid can be sucked.
Efficient cleaning can be performed because of the stable and vigorous liquid flow. As shown in FIG. 1, the opening edge of the through hole 14 on the side of the diaphragm 10 is made curved or chamfered so that the air flow (liquid flow) can be made hard to be disturbed, and a more stable pressure can be obtained. In addition, efficient cleaning can be performed during cleaning. In addition, since there is no edge, dirt hardly accumulates.

The filter 31 provided at the tip of the ventilation hole 30 of the cover 16 has a convex shape projecting toward the outer surface side as shown in FIG.
If the dirt accumulates in the attachment 1, the dirt can be easily checked when the attachment 6 is attached and detached, and the accumulated dirt can be easily removed with a brush or the like. When the filter 31 is formed in such a convex shape, when the filter 31 is dropped, there is a high possibility that the filter 31 is deformed. It is preferable to provide a protection frame 35 having a high height. It is possible to eliminate the possibility of the filter 31 being deformed or damaged.

FIGS. 5 and 6 show other examples. The basic configuration is the same as that described above, but here, the cover 16 is attached by fixing the screw 36 from the front side of the main body housing 1. The valve block including the valve 17 and the exhaust valve 18 can be removed. Intake valve 1
When the function is deteriorated due to foreign matters adhering to the exhaust valve 7 and the exhaust valve 18, the function can be recovered by taking out the valve block and cleaning it.

[0016]

As described above, according to the present invention, in a suction device for performing suction by generating a negative pressure by a change in the internal volume of a pump chamber due to reciprocal driving of the diaphragm, the diaphragm and the suction / discharge valve are arranged in the pump chamber. In addition to providing a partition wall for partitioning the installation portion, and providing a through hole for communicating the diaphragm side in the pump chamber and the arrangement portion of the suction / discharge valve at the center of the partition wall at a position facing the diaphragm. When the diaphragm operates, regardless of the positions of the intake valve and the exhaust valve, the intake and exhaust are performed through the through holes when viewed from the diaphragm, so that the elastic portion of the diaphragm is affected by the positions of the intake valve and the exhaust valve. Therefore, a stable pressure can be obtained without performing a stable movement. Also, when cleaning by absorbing and discharging the cleaning liquid,
Since the cleaning liquid reciprocates through the through-hole and becomes a vibrant flow, efficient cleaning can be performed.

At this time, if a through-hole is provided on an extension of the diaphragm in the reciprocating direction of the connecting portion of the diaphragm with the drive system for reciprocating drive, the elastic portion will move more stably, and the elastic portion of the diaphragm will move. Even more preferable results can be obtained than when the through holes face each other. If the opening edge on the diaphragm side in the through hole is formed as a chamfered surface or a curved surface, the turbulence of the air flow is reduced, so that a more stable pressure can be obtained, and in addition, a portion of the through hole can be obtained. Dirt is less likely to accumulate.

In the case where a filter is provided at the end of the intake hole connected to the pump chamber via the intake valve, if the filter is formed to have a convex shape protruding outward, it is easy to check the filter for dirt and to remove the dirt. When the protection frame portion having a higher projecting height toward the outside than the filter is provided on the outer peripheral side of the intake hole, the risk of deformation of the convex filter is reduced.

Further, if the suction / discharge valve is fixed between the cover detachable from the partition wall side member and the partition wall side member, maintenance of the suction / discharge valve can be easily performed by removing the cover. It can be carried out.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part according to an example of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a suction-type beautifier provided with the above suction device.

FIG. 3 is a front view of a suction-type beautifier provided with the suction device according to the first embodiment.

FIG. 4 is a cross-sectional view of a filter portion in another example.

FIG. 5 is a sectional view of still another example.

FIG. 6 is a sectional view showing a state in which the cover is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diaphragm pump 10 Diaphragm 12 Pump chamber 14 Through hole 17 Intake valve 18 Exhaust valve

Claims (6)

[Claims] 1. A suction device for performing suction by generating a negative pressure by a change in the internal volume of a pump chamber due to reciprocal driving of a diaphragm, wherein a partition wall for partitioning the diaphragm and an arrangement portion of a suction / discharge valve is provided in the pump chamber. A suction device, wherein a through hole is provided at a center portion of a partition wall at a position opposed to the diaphragm to allow communication between a diaphragm side in a pump chamber and a portion where a suction / discharge valve is provided. 2. The suction device according to claim 1, wherein a through hole is provided on an extension of the diaphragm in a reciprocating direction of a connecting portion of the diaphragm with a driving system for reciprocating driving. 3. The suction device according to claim 1, wherein an opening edge of the through hole on the diaphragm side is formed as a chamfered surface or a curved surface. 4. The suction device according to claim 1, wherein a filter is provided at a tip of an intake hole connected to the pump chamber via the intake valve, and the filter has a convex shape protruding outward. apparatus. 5. The suction device according to claim 4, wherein a protection frame portion having a height protruding outward from the filter is higher on an outer peripheral side of the intake hole. 6. The suction device according to claim 1, wherein the suction / discharge valve is fixed between a cover detachable from the partition wall side member and the partition wall side member.