JPH0722252Y2 - Medical vacuum equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a vacuum device mainly used for a vacuum syringe for dental treatment and other medical suction / treatment devices.

(Prior Art) As a conventional medical vacuum device, as shown in FIG. 4, a blower b and a motor c are installed in a casing a, and the blower b is driven by the rotation of the motor c.
Mostly, the suction air of the blower b and the cooling air of the motor c were discharged into the casing a, and the intake air from the suction port d provided in the casing a was sent to the outside through the discharge port e.

(Problems to be Solved by the Invention) In the above-mentioned conventional example, since the suction air of the blower b is discharged into the casing a, the motor c is heated by the heat of discharge, and the gas discharged from the blower b is further changed. Contains water, and this water flows into the motor c section, which has a drawback that it damages electric parts such as electric boards and circuits.

Therefore, the present invention has been made to solve the above-mentioned problems, and the inside of the casing is divided into a motor chamber and a blower chamber by a heat shield plate, and thermal interference due to blower exhaust, that is, heating of the motor unit and An object of the present invention is to provide a medical vacuum device capable of preventing damage to electric parts.

(Means for Solving the Problems) The configuration of the present invention for achieving the above object will be described with reference to FIG.

That is, the medical vacuum device of the present invention is a blower 1
In a medical vacuum device in which a motor 2 for driving the blower 1 and a motor 2 for driving the blower 1 are installed in a casing 3, parts other than the power transmission parts of the motor 2 and the blower 1 are shielded by a heat shield plate 4, and the casing 3 The interior is divided into a motor room 21 and a blower room 11,
The motor cooling passage 22 for the fan 5 provided in the fan 21 and the suction passage 12 of the blower 1 are separated from each other in the casing 3.

Although the fan 5 is shown as being directly connected to the motor 2,
The fan 5 may be provided in the motor chamber 21 separately from the motor 2.

(Operation) In the medical vacuum device having the above configuration, the motor 2
The rotation of the blower rotates the blower 1 and the fan 5.

The suction side becomes a strong negative pressure due to the rotation of the blower 1,
A suction passage 12 is formed which is sucked in through the suction port 13, passes through the blower 1, and is exhausted through the discharge port 14.

On the other hand, a motor cooling passage 22 that is sucked in by the rotation of the fan 5 and is discharged from the outlet 24 through the fan 5 and the motor 2 is formed as a separate passage from the suction passage 12.

Since the motor cooling passage 22 and the suction passage of the blower 1 are separated from each other in this manner, it is possible to prevent heating of the motor 2 portion and damage to electric parts due to exhaust of the blower 1.

Example Next, an example will be described with reference to the drawings.

FIG. 1 shows an example of a vacuum device used for dental treatment, 1 is a blower, 2 is a motor for driving the blower 1, 3 is a casing installed inside the blower 1 and the motor 2, and 4 is a motor 2. Is a heat shield plate that thermally shields parts other than the power transmission part of the motor compartment and divides the casing 3 into the motor chamber 21 and the blower chamber 11, and the motor cooling passage 22 by the fan 5 installed in the motor chamber 21 by this partitioning. And the suction passage 12 of the blower 1 are separated in the casing 3.

The suction passage 12 is suctioned by the rotation of the blower 1 from the suction port 13 and is exhausted from the discharge port 14 through the blower 1 to form a suction passage 12.

The motor cooling passage 22 is sucked from the suction port 23 by the rotation of the fan 5, and the motor cooling passage 22 discharged from the discharge port 24 through the fan 5 and the motor 2 is separated from the suction passage 12. It is formed.

In the figure, reference numerals 15 and 25 are air filters provided at the exhaust ports 14 and 24, and 16 and 26 are filter cases of the air filters 15 and 25.

Reference numeral 6 denotes a soundproof material stretched over the inner wall of the casing 1. The soundproof material 6 and the air filters 15 and 25 reduce noise of the apparatus and improve the soundproof effect.

7 is a cushioning material such as urethane sponge, which is a heat shield plate 4,
The vibration of the blower chamber 11 and the motor chamber 21 is reduced, and the leakage of fluid in the passages 12 and 22 is prevented.

(Embodiment 2) In the embodiment shown in FIG. 2, two devices of the preceding example (see FIG. 1) are arranged in a casing 3, and suction ports 1 of two blowers 1 and 1 are arranged.
3 is one place.

When the check valves 17 and 18 made of a valve plate made of rubber or the like are attached to the blower 1 and 1 sides of the suction port 13 and one blower 1, for example, the upper blower 1 in FIG. 2 rotates, The suction force causes the upper check valve 17 to open and the lower check valve 18 to automatically close.

In this way, by disposing two units, if one fails, the other can be operated and the casing lid can be removed for repair.

The switching valve may be another automatic valve or a manual valve.

Since the other points of this embodiment are the same as the previous example (see FIG. 1), the same parts as those of the previous example are designated by the same reference numerals, and the description thereof will be omitted.

(Embodiment 3) The difference from FIG. 3 is that the vertical relationship between the motor 2 and the blower 1 in the construction of Embodiment 1 is reversed and the fan 5 is connected to the motor shaft in the horizontal direction. To do.

Since this operation / effect is the same as that of the first embodiment, its explanation is omitted.

(Effects of the Invention) As described above, the medical vacuum device of the present invention is the medical vacuum device in which the blower 1 and the motor 2 for driving the blower 1 are installed in the casing 3. The parts other than the power transmission part with 1 are shielded by the heat shield plate 4, and the casing 3
The inside is divided into a motor chamber 21 and a blower chamber 11, and a motor cooling passage 22 is provided by the fan 5 provided in the motor chamber 21.
Since the suction passage 12 of the blower 1 is provided as a separate passage in the casing 3 so that the suction air of the blower 1 is discharged to the outside of the casing 3, the exhaust heat heats the motor 2 or blower. Even if the exhaust gas of No. 1 contains water, this water flows into the motor 2 section and can withstand long-term use without damaging electric parts such as electric boards and circuits.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIGS. 2 and 3 are sectional views showing other embodiments, respectively.
The figure is a cross-sectional view showing a conventional example. (Explanation of symbols) 1 ... Blower, 2 ... Motor, 3 ... Casing,
4 ... Heat shield, 5 ... Fan, 11 ... Blower room,
12 …… Suction passage, 21 …… Motor room, 22 …… Motor cooling passage.

Claims (1)

[Scope of utility model registration request] 1. A medical vacuum device in which a blower (1) and a motor (2) for driving the blower (1) are installed in a casing (3), the motor (2) and the blower (1). Parts other than the power transmission part of the casing are shielded by a heat shield plate (4), and the casing (3)
The inside is divided into a motor room (21) and a blower room (11),
The motor cooling passage (22) for the fan (5) provided in the motor chamber (21) and the suction passage (12) of the blower (1) are separated from each other in the casing (3). Medical vacuum device.