JPH03231613A - Steam-collecting device for cooker - Google Patents

Abstract

PURPOSE:To reduce the temperature and humidity of steam and to offer safe, comfortable circumstances, by a method wherein the steam generated during rice cooking is forcibly exhausted into the water of a heat exchanger through a steam-exhausting way by a fan and becomes in bubbles, and in a process in which the bubbles rice through the water in the heat exchanger, the heat of the steam is transmitted to the water in the heat exchanger. CONSTITUTION:By the operation of a fan 8, the steam generated in an inner vessel 3 enters a stream-exhausting way 7 through a steam-exhausting port 7a as shown with an arrow mark A. After this steam is passed through a steam-exhausting way 7, it is forcibly exhausted into water 4c in a heat exchanger 4 at an exhaust port 7b and becomes in bubbles, following which the bubbles rise through the water 4c in the heat exchanger 4. In rising process of the bubbles, the heat of the steam is transmitted to the water 4c in the heat exchanger 4, and thus the temperature of the steam is lowered and a part of the steam is condensed in the water 4c. Although the water 4c in the heat exchanger 4 increases by this condensation, it overflows through an overflow port 4b for waterlevel regulation and flows in a drain reservoir 5, and thus the waterlevel in the heat exchanger 4 is always kept constant. Therefore, the temperature of the steam exhausted through the exhaust port 4a above the heat exchanger 4 is adequately lowered and the humidity thereof is also lowered by the amount of the condensation.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention reduces the temperature and humidity of steam emitted from cooking appliances such as rice cookers or pressure cookers used in general households, thereby providing a safe and comfortable environment. This invention relates to a steam recovery device for a cooker.

Conventional Technology Conventionally, this type of cooker discharges steam into the room, so there were various problems arising from safety and the indoor environment, such as dew condensation on walls etc. near the place where the cooker was used. . For this reason, there is a device in which a water-cooled heat radiating device is attached to the steam exhaust section, as disclosed in Japanese Patent Application Laid-Open No. 59-2722 (FIG. 2). That is, in order to discharge the steam ejected from the steam hole 13 of the rice cooker 12 provided in the container body 11 through the steam guide 14 and the heat exchange device 15 to the outside of the container body 11, it is connected to a water supply (not shown). The structure is such that heat exchange is carried out between the cooling pipe 18 and the steam from the tank 16 through the electromagnetic valve 17.

On the other hand, as a steam recovery device for this type of cooker, an inner pot 22 is housed in the main body 30 of the rice cooker as shown in Japanese Utility Model Application No. 60-106532 (FIGS. 3 and 4). 22 Container 2 which is detachably attached to the outer part of the inner pot 22 through the introduction pipe 24 to which steam ejected from the steam hole 23 at the upper part
It is connected to 1. This container 21 has a passage 25 and a water 26
The water tank 27 is filled with rice, and the steam passage chamber 2 is filled with rice.
The passage chamber 28 has a built-in check valve 29.

Problems to be Solved by the Invention However, in the former structure as described above, it is structurally a large-scale device to be connected to a water pipe to obtain water for cooling, and there is no technology that can be applied to a single product. There wasn't. In the latter case, the structure of the container 21 itself is complicated, although the excess steam generated during rice cooking is cooled and converted into water inside the main body 30 of the rice cooker, and the steam is not discharged to the outside air. In addition, the structure of the main body 30 also becomes larger.

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and includes installing a heat exchange device on the outside of a pot equipped with a steam exhaust hole, and connecting the heat exchange device and the steam exhaust hole. A steam exhaust passage with a blower provided therebetween is provided, and a water overflow hole facing into a condenser removably attached to the heat exchange device is formed in the heat exchange device.

By doing so, the steam generated during cooking is forced by the blower to be discharged into the water in the heat exchange device through the steam exhaust passage, and rises in the water in the heat exchange device in the form of bubbles. During this rising process, the steam exchanges heat with water in the heat exchanger, reducing the temperature of the steam.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings, taking a rice cooker as an example.

In FIG. 1 showing the configuration of the embodiment, 1 is a main body of a rice cooker, and a heater 2 is attached to the inner bottom.
A removable inner pot 3 is placed on this heater 2.

Reference numeral 4 denotes a heat exchange device which is filled with water 4c during rice cooking, and is installed on the outside upper part of the main body 1. An exhaust hole 4a is formed in the upper part of the heat exchange device 4, and a water overflow hole 4b for adjusting the water level is formed in the upper part of the side surface. Reference numeral 5 denotes a dew tray with an open upper portion, which is detachably attached to the heat exchanger 4, and the overflow hole 4b is exposed to the opening portion. Reference numeral 6 denotes a rotatable lid attached to the main body 1, and a steam exhaust passage 7 is provided inside. The steam exhaust passage 7 has a steam exhaust hole 7a at one end communicating with the inner pot 3, and a discharge hole 7b located near the inner bottom of the heat exchange device 4 at the other end. Reference numeral 8 denotes a blower, which is provided in the middle of the steam exhaust passage 7 and serves to forcefully discharge steam generated during rice cooking into the heat exchange device 4.

Next, the operation of this embodiment will be explained.

During rice cooking, after putting water and rice into the inner pot 3 and closing the lid 6, when the heater 2 is energized to heat the inner pot 3, steam is generated in the inner pot 3 as rice cooking progresses.

This state is detected by some sensor (not shown) and the blower 8 is operated. Steam generated in the inner pot 3 by the operation of the blower 8 enters the steam exhaust passage 7 through the steam exhaust hole 7a as indicated by arrow A. This steam passes through the steam exhaust path 7 and is forced into the water 4c of the heat exchanger 4 through the exhaust hole 7b, and rises in the water 4c in the heat exchanger 4 in the form of bubbles. During the rising process of the bubbles, the steam exchanges heat with the water 4c in the heat exchange device 4, the temperature of the steam decreases, and a part of the steam with which the heat exchange was performed is condensed into the water 4c. Although the water 4c in the heat exchange device 4 increases due to this condensation phenomenon, it overflows from the overflow hole 4b for adjusting the water level and flows into the dew pan 5, so that the water level in the heat exchange device 4 is always kept constant. Therefore, the performance of heat exchange is stable. Therefore, the temperature of the steam discharged from the exhaust hole 4a in the upper part of the heat exchanger 4 is sufficiently low, and the humidity is also low by the amount of condensed water.

More than the effects of the invention, according to the present invention, the steam generated during cooking is forcibly discharged by the blower into the water inside the heat exchange device through the steam exhaust path, and becomes bubbles that rise up in the water inside the heat exchange device. do. During this rising process, the steam exchanges heat with the water in the heat exchange device, lowering the temperature of the steam, and some of the steam that has undergone heat exchange is condensed into water, which is then discharged from the exhaust hole. The temperature of the steam being released becomes sufficiently low, and the humidity is also reduced by the amount of condensation, which lowers the exhaust steam pressure and speed, improving safety and preventing condensation on walls near the place where the cooker is used. It also suppresses Moreover, since the heat exchange device is removably attached to the outside of the main unit, the heat exchange device can have a compact structure, and it can be applied to a single product of the cooker, so the structure of the cooker itself does not have to be large. We can provide a steam recovery device for cooking appliances.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a steam recovery device for a cooking device according to an embodiment of the present invention, FIG. 2 is a schematic sectional view of a conventional steam recovery device for a cooking device, and FIGS. 3 and 4 3 is a partially cutaway schematic sectional view, and FIG. 4 is a sectional view of a main part of a heat exchange device (container). 1...Main body, 3...Inner pot (pot). 4... Heat exchange device, 4b... Overflow hole, 5...
Receptacle, 7... Steam exhaust path, 7a... Steam exhaust hole, 8... Blower.

Claims (2)

[Claims] (1), a pot (3) equipped with a steam discharge hole (7a), a heat exchange device (4) attached to the outside of this pot (3), and a heat exchange device (4) and a steam discharge hole (7a) between the steam exhaust channel (7
), and a steam exhaust path (7) is provided with a blower (8). (2), an overflow hole (4b) is formed in the heat exchange device (4), a removable dew pan (5) is attached to the heat exchange device (4), and an overflow hole (4b) is formed in the dew pan (5). 4b) The steam recovery device for a cooker according to claim 1, wherein the steam recovery device comprises: 4b).