JPH0523218Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is applicable to a dryer that circulates hot air in a storage chamber to dry items, a constant temperature bath that heats items to a certain temperature and stores them, or a washing machine. The present invention relates to a hot air heating tank device that can be used as a tableware sterilization storage for storing tableware at a sterilization temperature.

<Prior Art> Conventionally, for example, a dryer as shown in FIGS. 4 and 5 has been used as a device for heating and drying articles stored in a storage chamber while circulating hot air inside the storage chamber. . This dryer is constructed by installing a partition wall 33 and a perforated plate 32 upright on both sides and the back side of a room surrounded by a heat insulating wall 31, thereby creating a horizontal ventilation passage 34 (U-shaped in plan view). A blower 37 is arranged in an opening provided in the center of the partition wall on one side, and a perforated plate 32 is placed in front of the blower 37.
A heater 36 is installed in the ventilation path 34. Then, horizontal and horizontal hot air is generated in the storage chamber 35 surrounded by the perforated plate 23 and the partition wall 33 to dry the articles stored in the storage chamber 35.

<Problem to be solved by the invention> However, this kind of conventional dryer simply blows hot air into the storage chamber in one direction through the perforated plate 32 using the blower 37 installed in the ventilation passage on one side. For example, corner A on the blower side of the storage room.
There was a problem in that hot air did not flow easily, which delayed the heating and drying of items stored in this area.

The present invention was developed to solve the above problems, and is a hot air heating tank device that can uniformly heat items located in various parts of the room by blowing hot air throughout the storage room to eliminate local heating defects. The purpose is to provide

<Means for Solving the Problems> In order to achieve the above object, the hot air heating tank device of the present invention forms ventilation channels using partition walls on both sides and at the back or top of a storage chamber surrounded by a heat insulating wall. Then, an opening is provided in the approximate center of the partition walls on both sides to communicate the ventilation path with the storage room, a heater is installed in a part of the ventilation path, and a blower is placed facing each opening in the partition walls on both sides. A perforated plate is installed in front of both blowers, and a switch and a timer are provided to alternately switch the operation of both blowers at regular intervals.

<Function> This hot air heating tank device places articles to be heated or dried into a storage chamber, operates a heater, and starts a blower. The operation of the blowers is controlled by a timer and a changeover switch, and alternate operation is repeated in which one blower is operated for, for example, two minutes, then stopped, and the other blower is then operated for two minutes instead.

By alternating operation of both blowers, hot air is blown from left to right or from right to left in the storage room every two minutes, which makes it possible to change the direction of hot air from left to right or from right to left. The hot air flows even in the corners on the blower side where it is difficult for the hot air to flow, making it possible to uniformly apply the hot air to all the items in the storage chamber and heat them uniformly.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

Figure 1 shows a vertical cross-sectional view of the hot air heating tank device, and Figure 2
The figure shows a sectional view thereof. A storage chamber 1 serving as a heating tank is formed by being surrounded by a heat insulating wall 2 in a box shape, and a door 3 is provided on the front side. In the storage chamber 1, a back partition 4 is provided at the back, and side partitions 5 and 6 are provided on both sides.
A ventilation passage 7 having a U-shape in plan view is provided between the heat insulating wall 2 and the heat insulating wall 2.
are formed, and openings 8 and 9 are provided approximately at the center of the side partition walls 5 and 6 on both sides, and the ventilation passage 7 and the storage chamber 1 are communicated through the openings 8 and 9.

A blower 10 driven by a motor and having an axial fan is arranged in the opening 8 so as to blow air into the storage chamber 1 from the ventilation passage 7.
A similar blower 11 is installed in a position facing the ventilation passage 7.
It is arranged so that air is blown into the storage chamber 1 from the storage chamber 1.
A perforated plate 12 is disposed in the storage chamber in front of the blowers 10 and 11. The blower 10 blows air inside the storage chamber 1 from right to left in the figure through the perforated plate 12, and the blower 11 blows air inside the storage chamber from left to right through the perforated plate 12.

An electric heater or a combustion type heater 13 is installed in a part of the ventilation passage 7 to heat the ventilation. Also,
A shelf (not shown) is installed in the storage chamber 1, and articles to be heated or dried are stored on this shelf. Each drive motor of the blowers 10 and 11 is operated by a changeover switch 2.
0, and this changeover switch 20 is configured to switch and energize the motors of both blowers at every time set by a timer 21, so that they operate alternately.

Next, the operation of the hot air heating tank device will be explained.

When the apparatus is operated, for example, one of the blowers 10 is started, and the fan rotates to blow air from the ventilation passage 7 into the storage chamber 1, and circulate the air in the direction of the solid line arrow in the figure. The air passing through the ventilation path 7 is heated by the heater 13 and is blown into the storage chamber from the opening 8 as hot air. The air blown into the storage chamber 1 is appropriately diffused by passing through the perforated plate 12, except for the corner of the storage chamber on the side of the blower 10.
It flows almost throughout the storage room.

Then, when the time set on the timer 21 (for example, 2 minutes) has elapsed, the changeover switch 20 is switched, the blower 10 is stopped, and the other blower 11 is started. Then, in the storage chamber 1, air is blown in the direction of the chain arrow in the figure, contrary to the above, from left to right, and the hot air from the ventilation passage 7 is blown into the storage chamber 1 through the opening 9, and the hot air is blown into the storage chamber 1 through the opening 9. It passes through the plate 12 and flows with appropriate diffusion. At this time, the hot air is
The water flows almost throughout the storage chamber except for the corners in the side chamber, and of course also flows to the corner of the storage chamber on the side of the blower 10. Therefore, the hot air flows even in the corner where it was difficult to flow when the previous blower 10 was activated, and the articles placed in this area are also well heated.

Then, when the set time of the timer 21 has elapsed, the changeover switch 20 is switched again, the blower 11 is stopped, and the blower 10 is started again. By this operation of the blower 10, the hot air flows even in the corners where the hot air was difficult to flow when the blower 11 was operated last time, and the articles placed in those areas are also satisfactorily heated.

In this way, by alternately operating the blowers 10 and 11 on both sides, the direction of the hot air inside the storage chamber 1 changes to the opposite direction, thereby allowing the hot air to flow even into corners where it is difficult to flow with only one direction of air blowing. It is possible to circulate the hot air so that it flows well and uniformly heat all the articles in the storage chamber.

Note that if the fan of the blower 11 is used for both intake and exhaust purposes, and if the blower 11 is rotated in the opposite direction to the above and blows in the same direction as the blower 10, the amount of hot air blown can be increased and the amount of hot air inside the storage chamber 1 can be increased. Articles can be heated and dried more efficiently.

FIG. 3 shows a longitudinal sectional view of another embodiment, in which the ventilation passage is formed in the upper part instead of the back part.
That is, this heating tank device has an upper partition 24 erected at the upper part of the storage chamber 23, and side partitions 2 on both sides.
5, 26 are erected, and these partition walls 24, 25,
A gate-shaped ventilation passage 27 is formed between the side partition walls 26 and the heat insulating wall, and openings 28 and 29 are provided approximately in the center of the side partition walls 25 and 26 on both sides, and these openings 28 and 29 connect the ventilation passage 27 and the insulation wall. It has a structure in which storage chambers 23 communicate with each other.
Similarly to the above, the blowers 10 and 11 are installed facing the openings 28 and 29, and the heater 13 is installed in the upper ventilation passage 27.

The heating tank device shown in FIG. 3 also operates in the same manner as described above, and the hot air is switched at regular intervals to flow in opposite directions within the storage chamber 23, thereby uniformly heating the articles within the storage chamber.

<Effects of the invention> As explained above, according to the hot air heating tank device of the present invention, ventilation passages are formed by partition walls on both sides and the back or top of the storage chamber surrounded by the heat insulating walls. An opening is provided in the approximate center of the partition wall to communicate the ventilation path with the storage room, a heater is installed in a part of the ventilation path, and blowers are installed facing each other in the openings of the partition walls on both sides. A perforated plate is placed in front of the air blower, and a switch and timer are installed to alternately switch the operation of both blowers at regular intervals.By operating both blowers alternately,
Hot air is blown from left to right or from right to left at regular intervals in the storage room, so only one blower or two blowers installed facing each other can be operated at the same time. Hot air flows even into the corners of the blower side where it would be difficult for hot air to flow if the storage room was closed, allowing hot air to be applied evenly to all items in the storage room and heated evenly.
Can be dried.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a heating tank device showing an embodiment of the present invention, FIG. 2 is a cross-sectional view taken from FIG. The figure is a vertical cross-sectional view of a conventional device, and Figure 5 is the − of Figure 4.
FIG. 1...Storage room, 2...Insulated wall, 4, 5, 6...
Partition wall, 7... Ventilation passage, 8, 9... Opening, 10,
11... Blower, 12... Perforated plate, 13... Heater.

Claims (1)

[Scope of utility model registration request] A ventilation passage is formed by partition walls on both sides and the back or upper part of the storage chamber surrounded by the heat insulating wall, and an opening is provided approximately in the center of the partition on both sides to communicate the ventilation passage with the storage chamber. A heater is installed in a part of the ventilation passage, blowers are installed facing each other in the openings of the partition walls on both sides, and a perforated plate is arranged in front of both the blowers to control the operation of the blowers. A hot air heating tank device characterized by being equipped with a changeover switch and a timer that alternately switch at fixed time intervals.