JPS6340412Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a device for vacuum packaging food in bags by removing air from a synthetic resin sheet bag and heat-welding the opening of the bag. be.

(Prior Art) A small vacuum packaging device that can easily vacuum package food at home has been known.

This involves inserting the device's suction nozzle into the opening of a bag containing food, deaerating the bag, and then welding and sealing the bag's opening using the device's hot plate.

(Problem to be solved) The vacuum packaging device described above employs a mechanism that uses a motor to rotate fan blades to suck in air.
As the motor, a small motor with a small capacity is used in order to downsize the packaging device and reduce costs. Therefore, the motor itself gets hot after a short period of operation, so
1-2 times until the temperature of the motor drops after the first round of packaging is completed.
It is recommended to wait for several minutes; continuous operation may cause trouble to the motor. Therefore, packaging a large number of items is time consuming and inefficient.

Furthermore, the vacuum packaging apparatus has come to be used anywhere, such as in the kitchen or at the dining table, and there is a problem in that the entire apparatus resonates and generates noise due to the operation of the motor.

Therefore, the present applicant previously proposed a device for deaerating the bag using a hand pump (Utility Application No. 155924/1982).

This involves connecting a bellows body to a suction nozzle, pushing the bellows body by hand, and applying suction force to the nozzle when the bellows body returns to its original shape due to spring force.

The hand pump type vacuum packaging apparatus has the advantage that, compared to a motor-driven packaging apparatus, there is no problem of the motor generating heat, it can be used continuously, and it does not emit noise.

However, when suctioning the bag, in order to prevent outside air from flowing into the bag, the opening of the bag is lightly sandwiched between the packaging device body and the lid, and there is strong resistance to suction. Therefore, it has been found that the suction force generated when the bellows body returns to its original shape by the spring force is not able to suction efficiently. Although the above problem can be solved by increasing the spring force, a new problem arises in that a strong force is required when pushing the bellows body by hand.

(Means for Solving the Problems) In view of the above, the present invention discloses a vacuum packaging device that solves the disadvantages of hand pumps without impairing the advantages of hand pumps.

In the configuration of the present invention, a hand pump 4 is connected to a suction nozzle 3 exposed on the upper surface of the device main body 1.

The pump 4 has a bellows body 6 that can be expanded and contracted in the vertical direction disposed within a sealed housing 40 to form an intake chamber 42 between the sealed housing 40 and the bellows body 6.

A compression spring 44 is arranged inside the bellows body 6.
is biased in the direction of expansion.

The sealed housing 40 and the nozzle 3 are connected through a conduit 31, and an intake check valve 32 is provided in the air passage between the nozzle 3 and the intake chamber 42 to allow flow in only one direction from the nozzle to the sealed housing 40. be done.

Further, an exhaust check valve 43 is connected to the casing 40 to allow flow from the intake chamber 42 to the outside in only one direction.

A pushing member 45 against the bellows body 6 is provided so as to penetrate the upper surface of the casing 40 so as to be able to move up and down in an airtight manner.

(action and effect) Insert the nozzle 3 into the opening 91 of the bag 9.

Press the bellows body 6 of the hand pump 4 by hand. At this time, the volume of the intake chamber 42 between the bellows body 6 and the sealed casing 40 increases in proportion to the contraction of the bellows body 6, the intake chamber 42 becomes a negative pressure, and the inflow check valve 32 automatically closes. The nozzle 3 is opened to apply suction force to the nozzle 3.

When the pressing force on the bellows body 6 is released, the bellows body 6 returns to its original shape due to the spring force, and the air in the intake chamber 42 is discharged to the outside from the discharge check valve 43.

When the bellows body 40 returns to its original shape, the bellows body 6
Press to apply suction force to the nozzle 3. After performing the above operation several times, the inside of the bag becomes a vacuum state, and when the bag comes into close contact with the food inside, the opening 91 of the bag is strongly pinched between the lid 2 and the main body 1, as is known in the art.
The opening is thermally welded using a heater provided in the device.

As mentioned above, when retracting the bellows body 6 of the hand pump 4, suction force is applied to the nozzle 3, so the suction force is unrelated to the force of the spring that returns the bellows body 6, and a weak spring is used. The effort of pushing the bellows body can be reduced. Moreover, in order to exhaust the air in the intake chamber 42, strong resistance does not act as in the case of intake, and even if the force of the spring that returns the bellows body 6 to its original shape is weak,
The bellows body 6 can quickly return to its original shape, and the bag can be quickly suctioned.

(Example) Fig. 1 shows a packaging device with the operation side facing forward, and the packaging device main body 1 is formed into a horizontally long flat body, and a band-shaped main body 1 is provided on the opening side of the top surface over almost the entire length of the main body 1. A hot plate 5 is provided, and a nichrome wire heater 51 is built into the hot plate 5.

At approximately the center of the main body 1 and at the rear of the hot plate 5,
A flat suction nozzle 3 is disposed with its opening 30 facing toward the open side, and a hand pump 4, which is a feature of the present invention, is disposed at the central rear part of the main body 1.

As shown in FIG. 2, the pump 4 has a substantially cylindrical closed casing 40 formed within the main body 1 of the apparatus, and a bellows body 6 made of synthetic resin that expands and contracts in the vertical direction is provided within the casing 40. An intake chamber 42 is provided between the housing 40 and the bellows body 6.
is formed.

A cylindrical pushing member 45 is inserted through the upper surface of the sealed casing 40 in a vertically movable and confidential manner, and a disc-shaped pressing plate is provided at the lower end of the pushing member 45 corresponding to the upper surface of the bellows body 6. 47 is provided in a protruding manner, and a push handle 46 is attached to the upper end. handle 4
6 is formed by protruding downward from the outer periphery of a circular plate 48, and has an outwardly bent piece 41 around the entire lower edge of the cylindrical portion 49.

The bent piece 41 comes into contact with the edge of the handle attachment opening 10 formed in the main body 1 of the apparatus, and prevents the handle 46 from coming off.

A compression spring 44 is provided inside the bellows body 6,
The pushing member 45 constantly urges the bellows body 6 in the direction of extension.
is pushing up.

The sealed housing 40 and the nozzle 3 are connected through a conduit 31, and the sealed housing 4 is connected to the conduit 31 from the nozzle 3 to the nozzle 3.
Intake check valve 32 that allows flow only in one direction to 0
will be provided.

An exhaust check valve 43 is provided on the upper surface of the sealed casing 40 to allow flow in only one direction from the intake chamber 42 to the outside.

A lid body 2 is pivotally supported on the rear edge of the device main body 1, and a semicircular notch 22 from which the handle 46 of the hand pump 4 projects is formed in the center of the pivot side of the lid body 2. There is.

On the inner surface of the free end side of the lid 2, there is a pressing surface 2 that can press the hot plate 5 at a position facing the hot plate 5 of the main body 1.
1 is formed.

However, when the handle 46 of the hand pump 4 is held down by hand and the bellows body 6 is retracted, a negative pressure is created in the intake chamber 42, and a suction force is applied to the nozzle 3.

When the pressing force on the bellows body 6 is released, the bellows body 6 returns to its original shape due to the spring force, and the air in the intake chamber 42 is discharged to the outside from the discharge check valve 43.

When the above operation is repeated several times, the inside of the bag 9 is suctioned.

Once the suction is finished, the opening of the bag can be thermally welded using the heater 5 as before.

The vacuum packaging device has a strong suction force, and in order to suck moisture into the suction chamber 42 if moisture accumulates in the bag, a drain hole 71 with a stopper 7 is provided at the bottom of the suction chamber 42. .

The power supply to the heater 51 is controlled so that it is automatically turned on when the lid 2 is strongly tightened. Alternatively, it is possible to manually operate an ON-OFF switch provided at a suitable location, or the power supply can be automatically stopped using a timer.

It goes without saying that the configuration of each part of the present invention is not limited to the above-mentioned embodiments, but can be modified in various ways within the technical scope of the claims for utility model registration.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the vacuum packaging equipment, Figure 2 is a side view of the vacuum packaging equipment.
FIG. 1... Main body, 2... Lid body, 3... Nozzle, 4... Manual pump, 6... Bellows body.

Claims (1)

[Scope of utility model registration request] The opening 91 of the bag is fitted into the suction nozzle 3 exposed on the top surface of the device main body 1, the lid 2 of the device main body 1 is closed, and the air inside the bag is sucked by the nozzle 3, and the opening 91 of the bag is heated. In a vacuum packaging device that performs welding and sealing, a suction nozzle 3 is connected to a hand pump 4 provided in the device body 1, and the pump 4 is provided with a bellows body 6 that can expand and contract in the vertical direction within a sealed casing 40. An intake chamber 42 is provided between the sealed casing 40 and the bellows body 6.
A compression spring 44 is arranged inside the bellows body 6 to bias the bellows body 6 in the direction of expansion.
0 and the nozzle 3 are connected through a conduit 31, and an intake check valve 32 is provided in the ventilation path between the nozzle 3 and the intake chamber 42, which allows flow only in one direction from the nozzle to the sealed casing 40. Furthermore, an exhaust check valve 43 is connected to the casing 40 to allow flow from the intake chamber 42 to the outside only in one direction, and the exhaust check valve 43 is passed through the top surface of the casing 40 in an airtight manner so as to be vertically movable. A vacuum packaging device equipped with a member 45.