JPH0574538U - Steam discharge device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a vapor discharge device having a simple structure, easy to assemble, and reliable operation. A damper unit assembled in the steam generation chamber 7 is arranged so as to project across a steam generation cylinder 1 provided so as to communicate with the inside and outside of the steam generation chamber 7 and an axis 14 of the steam discharge cylinder 1. A frame 4 mounted on the inner wall, a shaft 3 which penetrates the frame 4 in the longitudinal direction and is slidably provided so as to be substantially aligned with the axis 14, and the steam provided on the upper end of the shaft 3. The damper 2 fixed so as to normally close the upper discharge port 8 of the discharge cylinder 1, and the shaft 3
A shaft joint 11 provided so as to be located in the frame 4, a bias spring 16 wound around a shaft upper half portion 9 between the shaft joint 11 and the ceiling wall 15 of the frame 4, and the shaft. The shape memory alloy spring 5 is wound around the lower half portion 10 of the shaft between the joint 11 and the floor wall 17 of the frame and is deformable in the extension direction at a set temperature.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a steam discharge device used for a disinfecting storage machine for dishes and the like.

[0002]

[Prior Art]

 As this type of conventional steam discharge device, a steam discharge cylinder provided with a solenoid or a damper that is manually opened and closed (for example, JP-B-56-30331) (hereinafter referred to as the former), or it is always open without a damper. Some of them are equipped with a steam discharge tube (hereinafter referred to as the latter).

[0003]

[Problems to be solved by the device]

 However, in the former case, a control circuit including electric power and a thermoswitch is required to operate the solenoid, which complicates the structure, increases the number of causes of failure, and requires time and effort for maintenance, resulting in high cost. It was In addition, the manual method was troublesome to operate. On the other hand, in the latter case, it is difficult to control the temperature and steam inside the machine, and it requires more power than necessary, so the thermal efficiency is poor. There was a problem.

The present invention has been made in order to solve the problems of the prior art, and an object of the present invention is to provide a vapor discharge device that has a simple structure, is easy to assemble, and operates reliably.

[0005]

[Means for Solving the Problems]

 In order to achieve this object, in the present invention, a high temperature generating chamber capable of circulating hot air and capable of maintaining a high temperature set value is provided with a steam discharge pipe provided so as to communicate with the inside and outside of the high temperature generating chamber. A damper provided outside the vapor outlet to normally close the vapor outlet, and a shaft provided so as to project inside the damper and be inserted into the vapor outlet. , A frame mounted in the steam discharge cylinder for slidably supporting the shaft, and sliding the shaft before reaching a high temperature set value that is mounted in the frame and is generated in the high temperature generating chamber It is characterized in that a damper unit made of a shape memory alloy that is designed to operate in order to operate is attached.

[0006]

[Action]

 According to the above configuration, hot air is circulated when the operation of the device is started after storing the washed dishes and the like in the high temperature generation chamber. At the normal temperature before the room temperature reaches the high temperature set value, the damper blocks the steam outlet, but before the temperature reaches the high temperature set value, the shape memory alloy acts on the shaft and the shaft Slides along the frame in the axial direction, moves the damper outward, opens the steam outlet, discharges the heated steam to the outside, and at the same time sets the temperature in the high temperature generation chamber to the set value of high temperature. Up to. At that time, the shape memory alloy continues to hold the posture with the damper moved outwards, disinfects the dishes etc. and dries, and if the operation of the device is stopped, the room temperature drops to below the set value. Then, the shape memory alloy is restored to the normal posture, and the restoring operation causes the shaft to slide in the direction opposite to the above-mentioned operation, moves the damper inward, and closes the discharge port.

[0007]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a vertical cross-sectional view of a damper unit which is a main part of a steam discharge device, and mainly includes a steam discharge cylinder 1, a damper 2, a shaft 3, a frame 4, a shape memory alloy spring 5, and the like. To be done.

The steam discharge tube 1 is formed in a rectangular tube shape so as to communicate with the inside and outside of the high temperature generation chamber 7 above the disinfecting storage device 6 (FIG. 3), and the damper 2 is provided at the upper end inside. The shaft 3, the frame 4, the shape memory alloy spring 5 and the like are provided respectively. The shape of the cylinder may be a cylinder.

The damper 2 has a larger area than the cross section of the steam discharge tube 1, and has a shaft 3 protruding in the center of the back surface, and the discharge port 8 is normally closed at the upper end of the steam discharge tube 1. It is provided to do so. The area of the damper 2 may be the same as the cross section of the steam discharge tube 1, and a stopper (not shown) may be provided in the discharge tube 1 to limit the operation of the damper 2.

The shaft 3 is formed by connecting an upper half portion 9 and a lower half portion 10 with a shaft joint 11, and a male screw portion (not shown) formed at an upper end of the upper half portion 9 has the damper 2 The shaft 3 is fixed so as to descend from the center of the lower surface to the surface, and the upper end that penetrates is screwed with a nut 12, and the shaft 3 slides up and down along the axis of the steam discharge tube 1. It is mounted on the frame 4 as much as possible.

The frame 4 is in the shape of a box whose both sides are open, one end of which is fixed to the inner wall surface of the steam discharge cylinder 1 via a rivet 13 and the other end of which is the axis 14 of the steam discharge cylinder 1. Extends across.

The shaft 3 extends vertically through the frame 4, and a swelling shaft joint 11 is positioned in the frame 4.

A bias spring 16 is wound around the upper half portion 9 of the shaft between the shaft joint 11 and the ceiling wall 15 of the frame 4, while the shaft joint 11 and the floor wall 17 of the frame 4 are wound. A shape memory alloy spring 5 is wound around the lower half portion 10 of the shaft between and.

The shape memory alloy spring 5 maintains a contracted normal state at a normal temperature (set temperature, that is, a temperature equal to or lower than the temperature stored in the spring), and the shaft joint 11 has a bias spring 16 extending from the upper side to the lower side. The damper 2 closes the upper discharge port 8 of the steam discharge cylinder 1 due to its strong urging force. At the set temperature of 57 ° C., the shape memory alloy spring 5 changes to the expanded state and the shaft An upward biasing force is applied to the joint 11, and the damper 2 opens the discharge port 8.

In FIG. 3, 18 is a heating chamber which is formed on the side of the disinfection storage device 6 and communicates with the high temperature generating chamber 7 below, 19 is a cupboard, 20 is a basket basket, 21 is tableware, Reference numeral 22 is a large fan for circulating hot air, 23 is a heat source that connects the outlet of the fan 22 and the heating chamber 18, and 24 is a fixture for assembly.

The high temperature generation chamber 7 is set so that a room temperature of 80 ° C. to 100 ° C. is secured by 60 minutes at the latest after the start of operation, and in the process of increasing the room temperature until the set room temperature reaches 80 ° C. to 100 ° C. At 57 ° C, the damper 2 is opened due to the change of the shape memory alloy spring 5 to the expanded state, and after reaching the set room temperature 80 ° C to 100 ° C, the switch is turned ON / OFF until 80 minutes to 100 ° C. The shape memory alloy spring 5 returns to its normal contraction state at a set temperature of 57 ° C. during which the operation is stopped and the room temperature is lowered. The damper 2 closes the discharge port 8.

The reason why the damper 2 is opened at the low temperature of 57 ° C., which reaches the set room temperature of 80 ° C. to 100 ° C., is to release the moisture quickly before the dew point temperature is reached, and the room temperature is maintained even after the damper 2 is opened. Rises from 80 ° C to 100 ° C.

Next, the operation of the steam discharge device including the damper unit described above will be described.

In FIG. 3, when the large-sized fan 22 for circulating hot air is operated in a state where the tableware 21 with water drops is stored and sealed in the disinfecting storage device 6, it is discharged from the heat source 23. The hot air is discharged from the lower part of the heating chamber 18 toward the upper part of the high temperature generating chamber 7, is guided to the cupboard 19, passes between the tableware 21 described in the tabletop 20 and passes through the fan 22. Circulates by being sucked into the intake port of.

The heating in the high temperature generation chamber 7 is continued by such circulation, and when the temperature reaches a predetermined temperature, that is, 57 ° C., the shape memory alloy spring 5 expands as shown in FIG. The biasing force overcomes the biasing force of the bias spring 16 and exerts an upward force on the shaft joint 11, which causes the shaft 3 and the damper 2 to rise, and the discharge port 8 of the vapor discharge cylinder 1 to open.

When the indoor temperature of the high-temperature generation chamber 7 is further raised from 57 ° C. by the circulation of hot air and raised to the indoor set value (80 ° C. to 100 ° C.) (60 minutes after the start of operation), the heat source is generated by the thermostat. Turn ON / OFF 23. At that time, the fan 22 is kept rotating.

Even if the inside of the high temperature generation chamber 7 reaches the indoor set value (80 ° C. to 100 ° C.), the tableware 21 accommodated therein does not initially reach the same set temperature, but the heat source 23 is turned on. -While the indoor set value (80 ° C to 100 ° C) continues due to the OFF operation (by 90 minutes after the start of operation), the temperature gradually rises to the indoor set value.

In this way, as the temperature of the tableware 21 rises, the water droplets on the tableware 21 are vaporized. At that time, the tableware 21 is thermally sterilized by the vaporized hot air, and the vaporized hot air is discharged from the open outlet 8 to circulate the low-humidity hot air in the high temperature generating chamber 7. Then, the tableware 21 is dried. The circulation of hot air is automatically stopped 90 minutes after the start of operation.

After that, since the inside of the high temperature generation chamber 7 has residual heat and the damper 2 is opened, the steam remaining inside the chamber is discharged from the opened discharge port 8. When the temperature of the room falls to the set temperature (57 ° C.) of the shape memory alloy spring 5, the damper 2 is closed and the room is sealed in a dry state.

In the above embodiment, the preset temperature of the shape memory alloy spring 5 is set to 57 ° C., but it is possible to prevent the generation of dew so that the temperature is adapted to various conditions such as the volume of the high temperature generating chamber 7. It may be changed to an appropriate temperature.

In addition, when the bias spring 16 is removed from the configuration of the embodiment, or when a shape memory alloy spring that contracts at a set temperature is used, the shape memory alloy spring and the bias spring in the above embodiment are wound. The bias spring may be omitted when the position is reversed or when the position is reversed.

In addition, in the above-described embodiment, the vapor discharge tube 1 separate from the main body is attached to the ceiling of the generation chamber 7, but the vapor discharge tube is integrated with the main body itself. It can be provided.

Further, the damper unit described above can be attached to a kitchen device other than the disinfecting storage device 6 that requires steam discharge, for example, a Shari cooler (rice cooker).

[0030]

[Effect of the device]

 As described above, in the steam discharge device of the present invention, the steam provided to communicate with the inside and outside of the high temperature generation chamber, in which hot air can circulate and the high temperature set value can be maintained. An exhaust pipe, a damper provided outside the exhaust port to normally close the exhaust port of the vapor exhaust pipe, and a damper provided so as to project inside the damper and be inserted into the vapor exhaust pipe. A shaft, a frame mounted in the vapor discharge cylinder for slidably supporting the shaft, the shaft mounted in the frame before reaching a high temperature set value generated in the high temperature generation chamber Since a damper unit made of a shape memory alloy that is designed to operate so as to slide is assembled, the structure of the steam discharge device is simplified, the cause of failure is reduced and maintenance is facilitated. High temperature Without dropping the dew receiving of the inner, drying automatically performed.

[Brief description of drawings]

FIG. 1 is a partially cutaway vertical sectional view of a main part of a steam discharge device of the present invention in a normal state.

FIG. 2 is a partially cutaway vertical cross-sectional view of a main part when the vapor discharge device is in operation.

FIG. 3 is a partially cutaway perspective view of a disinfecting storage machine equipped with the same vapor discharge device.

[Explanation of symbols]

 1 Steam Discharge Cylinder 2 Damper 3 Shaft 4 Frame 5 Shape Memory Alloy Spring 6 Disinfection Storage Machine 7 High Temperature Generation Chamber 8 Discharge Port 9 Upper Shaft Part 10 Shaft Lower Half Part 11 Shaft Joint 12 Nut 13 Rivet 14 Shaft Center 15 Frame ceiling wall 16 Bias spring 17 Frame floor wall 18 Heating chamber

Claims (3)

[Scope of utility model registration request] 1. A high temperature generating chamber capable of circulating hot air and capable of holding a high temperature set value, and a steam discharge tube provided so as to communicate with the inside and outside of the high temperature generating chamber, and a discharge of the steam discharge tube. A damper provided outside the discharge port to normally close the outlet, a shaft provided so as to project inside the damper and inserted into the vapor discharge cylinder, and the shaft supported slidably And a frame mounted in the steam discharge cylinder for operating the shaft, and the frame is mounted in the frame so as to operate so as to slide the shaft before the set value of the high temperature generated in the high temperature generation chamber is reached. A steam discharge device, characterized in that a damper unit made of a shape memory alloy is assembled. 2. The steam discharging apparatus according to claim 1, wherein the high temperature generating chamber is a disinfecting storage machine for dishes and the like. 3. A damper unit, in which a damper unit is provided so as to communicate with the inside and outside above the high temperature generating chamber, and a frame-shaped frame mounted on the inner wall of the damper unit so as to project across the axis of the steam discharge unit. And a shaft that penetrates the frame in the vertical direction and is slidably provided so as to be substantially aligned with the axis of the steam discharge tube, and an upper end discharge port of the steam discharge tube that is provided at an upper end of the shaft. A damper fixed so as to be closed with a shaft joint, a shaft joint provided so as to be located in the frame of the shaft, and an upper half part of the shaft wound between the shaft joint and the ceiling wall of the frame. A bias spring, and a shape memory alloy spring wound around the lower half of the shaft between the shaft joint and the floor wall of the frame and capable of extending and deforming at a set temperature. The steam discharge device according to claim 1 or 2, characterized in that.