JP2002168495A - Exhaust device for ih cooking heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat a hood to form an atmosphere, where dew condensation is prevented from occurring, during cooking by an IH cooking heater. SOLUTION: At least a filter 31 is situated in a hood body 11, the lower side of which forms the suction side, to constitute a hood 1. A blower 41 is situated in the back space of the filter 31 of the hood body 11 or at the outside of the hood body 11. A means 2 is provided to heat the hood 1 to form the atmosphere where dew condensation does not occur. The means 2 consists of a heat generating device and a hot air generating device 12. In the case of providing the heat generating device 12, the device is situated on the inner surface of the hood body 11 and a filter 31 or a member situated upstream of it. The hot air generating device 12 is constituted such that a part of exhaust air from the blower 41 provided in the body 11 is heated by a heater 12b and supplied from the lower side toward the hood body 11 to heat the hood 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an exhaust device for an IH cooking heater (electromagnetic induction heating cooker).

[0002]

2. Description of the Related Art Conventionally, gas appliances and electric stoves using city gas, LP gas or the like as fuel have been used as cooking appliances. In the case of gas appliances, harmful substances such as carbon dioxide and carbon monoxide are generated by combustion, so that sufficient ventilation must be ensured. So, when cooking,
Nowadays, in addition to electric stoves that do not generate harmful substances, needs for IH cooking heaters (electromagnetic induction heating cookers) are gradually increasing.

A gas appliance generates combustion gas together with steam from a cooking pot or the like, reduces the humidity of the steam by the heat of the combustion gas, and warms the inner surface of the hood and its upstream members including a filter. The electric stove also heats the inner surface of the hood and its upstream members including the filter with the heat of the updraft. Therefore, no dew condensation occurs during cooking.

[0004] However, in the above-mentioned IH cooking heater, since the combustion gas and the updraft are not accompanied, steam generated at the time of cooking adheres to the inner surface of the hood and a member on the upstream side including the filter and forms dew. Dripping,
There is a current situation in which heaters, cooking containers, and even dishes being cooked are soiled.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a technical problem is to heat the hood to an atmosphere that does not cause dew condensation when cooking with an IH cooking heater.

[0006]

The technical means taken to solve the above object is to provide a hood having at least a filter in a hood body having a lower side as a suction side, and the hood body is provided with a filter behind the filter. An outdoor blower is installed outside a space or a hood, and the hood is heated to a non-condensing atmosphere (claim 1). The hood body is a cover-shaped body having a lower side open and a depth upward regardless of a boot type or a flat type. For example, a boot-type hood body includes a front plate and a lower-open type box whose front opening is covered with the front plate. A hood is provided internally with members such as a partition plate, a filter that is detachably engaged between the partition plate and the top plate of the box, and an outdoor blower (fan) behind the filter. The flat-type hood body has a flat box shape with an open bottom, and has a lower plate that covers the lower open portion, a filter that is detachably attached to the lower plate, a blower (fan) behind the filter, and the like. Is provided as a member to constitute a hood. In some cases, a rectifying plate is provided upstream of the filter. As a means for heating the hood to a non-condensing atmosphere, for example, a heating device (a sheet heater, a conductive heating paint, or the like) is given as an example.
For example, if it is a boot type, it is attached to a desired location such as an inner surface of a front plate forming a hood body, an inner surface of a box, a filter, a partition plate, a rectifying plate, and the like. It is attached to desired places such as a hood body, its lower plate, a filter, a rectifying plate, and the like. Of course, it is preferable to attach the heating device to each surface of the hood body having a large area, or to continuously attach the heating device to each surface of the configuration. In the case of a heat-generating device having a high heat-generating temperature, the heat-generating device should be provided at one or a plurality of selected members on the upstream side including the hood and the filter (filter, partition plate, rectifier plate, etc.). Accordingly, it is possible to heat the inside of the hood and the upstream member including the filter to an atmosphere that does not cause dew condensation. In addition, the operation of the heating device is controlled by ON / OFF of a switch provided alongside a switch of an operation unit disposed on a front plate or the like, so that the operation and the stop thereof can be controlled. When the sensor is operated in conjunction with the blower (claim 7) or provided with a detecting means for detecting humidity in the hood, and when the detecting means detects a predetermined humidity, the heating device is activated (claim 8). O
This eliminates the need for an N-OFF operation and is more suitable.

As described above, according to the technical means, the saturation point of steam generated by cooking and adhering to the inner surface of the hood and to the upstream member including the filter is increased to prevent dew condensation or to evaporate the steam.

It is also possible to use warm air as the means for heating. In this case, a part of the exhaust air from the blower installed in the hood is heated by the heater to heat the blown hood from below toward the hood. Not only the type linked to the blower, but also a part of the exhaust stream heated by the heater by the detection of the humidity detecting means blows warm air from below to the hood body,
The hood may be heated by the warm air to increase the saturation point of steam adhering to the inner surface of the hood and the upstream member including the filter, thereby preventing dew condensation (claim 8).

In addition, when the heating means includes the heat generating device according to the second aspect and the hot air generating device according to the third aspect, it is necessary to prevent the occurrence of dew condensation more effectively. It is effective (claim 5). Also, in order to make the hood non-condensing with warm air, indoor air or outdoor air is sucked in and heated by a heater without using part of the exhaust flow, and the warm air is heated from below by the hood. The inside of the hood can be freely heated by blowing out toward the body (claim 4). It is preferable that the heat generating device is made of a conductive heat generating paint in order to reduce the weight of the exhaust device (claim 6).

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment of an exhaust device for an IH cooking heater of the present invention, and FIGS.
5 and 6 show the third embodiment, FIG. 7 shows the fourth embodiment, and FIG. 8 shows the fifth embodiment. Reference numeral 9 denotes the sixth embodiment. First, the first embodiment shown in FIG. 1 will be described. Reference numeral A denotes an exhaust device for an IH cooking heater.

The exhaust device A for an IH cooking heater closes a lower rear half of a hood body 11 formed by covering a front opening portion of a box body 11a opened forward and downward with a detachable front plate 11b. Like the back plate 11a-1 of the box 11a,
Partition plate 21 over left and right plates 11a-2, 11a-2
And the front edge of the partition plate 21 and the top plate 1 of the box 11a.
1a-3 and a filter frame 11a-
4, the filter 31 is detachably locked.
It shows a boot type in which a hood 1 is configured with an outdoor blower 41 installed behind.

The blower 41 is a multi-blade fan such as a turbo fan or a sirocco fan. The blower 41 has a discharge port 41a 'of a volute fan casing 41a and a top plate 1 of the box 11a.
The exhaust duct D is connected to a connection joint 41b provided on the upper surface of the top plate 11a-3 by communicating with the exhaust port (not shown) provided in the exhaust port (not shown) provided in 1a-3. Forming a road.

The exhaust device A for an IH cooking heater is provided with means 2 for heating the hood 1 to a non-condensing atmosphere.
Is provided. The heating unit 2 is a heating device (described below with reference numeral 2) such as a sheet heater or a conductive heating paint, and includes an inner surface of a front plate 11b, a box 11a.
Inner surfaces of both side plates 11a-2 and 11a-1, and a back plate 11a-
1, the inner surface, the inner surface of the top plate 11a-3, the inner surface of the partition plate 21, the upper edge surface and the lower edge surface of the filter 31, etc. In consideration of the layout relationship of the members on the upstream side, including the pasting, the coating area and its location are selected, and the hood 1 is directly heated and the hood 1 is added so as to prevent the adhering steam from being condensed by effectively utilizing the hot air. Warm up.

The heat generating device 2 is linked to a detecting means 3 for detecting humidity and a control unit 4. When the detecting means 3 detects a predetermined humidity in the hood 11, heat is generated and adheres. Automatic control is performed to raise the saturation point of the steam or to evaporate the steam. An example of the detection means 3 for detecting the humidity is a humidity sensor, which is provided at a desired position in the hood 11.
It is to be noted that a configuration is also possible in which the heat is generated by being energized in conjunction with the operation of the blower 41.

In this embodiment, a boot-type exhaust device for an IH cooking heater is shown as an example.
It is optional to apply the exhaust device for the IH cooking heater to a flat type. For example, in a flat-type exhaust device for an IH cooking heater, a hood is constituted by a hood body (not shown) formed of a flat box having an open lower portion and a lower plate for detachably covering the open portion, and a filter is provided on the lower plate. A rectifying plate for engaging and disengaging the hood, or for increasing the flow velocity from the periphery of the hood body to suction air is further attached to the lower part of the filter. In consideration of the layout relationship of the upstream members including the area, the area of the heating device, the heating temperature, and the like, the area where the heating device is attached or painted and the location thereof are selected so that the attached steam does not condense.

Next, a second embodiment shown in FIGS. 2 to 4 will be described. Intake efficiency is reduced by the lower opening portion of the hood body 11, which is a portion where steam rising due to cooking just hits. A rectifying plate 51 is provided as a member on the upstream side of the filter 31 in order to increase the temperature, and the heating device 2 is attached or painted on the inner surface of the rectifying plate 51 as a means for heating.

The rectifying plate 51 is detachably provided at a lower opening portion in front of the partition plate 21 and is slightly upwardly directed toward the indoor side in such a manner as to block an area to which steam rising from the cooking vessel adheres. It is provided in an inclined shape. In the present embodiment, assuming that steam that rises also adheres to the partition plate 21, the heat generating device 2 is provided on the inner surface of the partition plate 21 to heat the steam that adheres to the partition plate 21. The saturation point of steam can be raised or evaporated by effective use.

The above-mentioned current plate 51 has stays 51a, 51a protruding at appropriate intervals on both side end faces facing both side plates 11a-2, 11a-2 and the front plate 11b of the box 11a. The stays 51a, 51a are integrally supported on one side with the rectifying plate 51 and supported on the other side via a spring 51b. The stays 51a, 51a are recessed in the side plates 11a-2, 11a-2 of the box 11a. A concave portion 11b recessed on both side plates of the plate 11b;
1, 11b-1 and one is inserted into its spring 51b.
Of the flow straightening plate 51
Can be detached from the hood body 11. The current plate 51 is provided on both sides 11a-2, 11a- of the box 11a.
It is also possible to adopt a structure in which only two are supported. By doing so, the front plate 11b can be attached and detached independently of the current plate 51. The air intake to the filter 31 is performed from a gap S between the peripheral edge of the rectifying plate 51, the front plate 11b, both side plates 11a-2, 11a-2 of the box 11a, and the partition plate 21.

This embodiment is a specific example of the above-described first embodiment. In this embodiment, steam is mainly directly heated to the rectifying plate 51 to which steam mainly adheres, and the heat is also supplied to the side plate of the box 11a. 11
a-2, 11a-2, and the front plate 11
b, the top plate 11a-3 of the box 11a and the filter 31 are indirectly heated by the hot air, and the heat of the partition plate 21 is transferred to the side plates 11a-2, 11a-2 and the back plate 11a-1 of the box 11a. Direct transmission to prevent condensation.

Next, a third embodiment shown in FIGS. 5 and 6 will be described. In this embodiment, a warm air generator 12 is used as the means for heating. The hot-air generator 12 introduces a part of the exhaust gas exhausted by the blower 41, heats it, and forcibly blows the air toward the partition plate 21 and the rectifying plate 51 from below the hood body 11. It is.

As shown in FIGS. 5 and 6, the hot air generator 12 is connected to the vicinity of the discharge port 41a 'of the fan casing 41a and is piped to communicate with or pass through the heater (heating device) 12b. 12a-1 to branch pipe section 12a
-2 is branched into two or three branches, and the branch pipe portion 12a-
2 is connected to a substantially reverse L-shaped nozzle body 12a-3 in a side view to form an air passage 12a.

The nozzle body 12a-3 is provided at the lower end of a flat vertical thin box having an internal hollow shape slightly narrower than the horizontal width of the partition plate 21 so as to face upward to the surface direction of the partition plate and the rectifying plate. Inclined flat horizontally elongated rectangular nozzle portion 12a'-3
From the nozzle portion 12a'-3, and the partition plate 21
In addition, hot air can be forcibly blown toward the surface of the current plate 51.

In the exhaust device for an IH cooking heater configured as described above, a part of the exhaust flow is heated by a heater (heating device) 12b in accordance with the operation of the blower 41, and is separated from a nozzle portion 12a'-3. Hot air is blown onto the surfaces of the plate 21 and the rectifying plate 51 to heat the partition plate 21 and the rectifying plate 51 to increase the saturation point of steam adhering to prevent dew condensation. Furthermore,
The warm air is supplied to the periphery of the current plate 51 and the front plate 11b,
Since the filter 31 is sucked into the filter 31 from the gap S between the both side plates 11a-2, 11a-2 and the partition plate 21a, the front plate 11b, the box 11a, and the filter 31 are also heated by the hot air. Prevent condensation on them. In this embodiment, an auxiliary fan (not shown) is provided in the middle of the air guide tube.
It is also possible to freely increase the blowing pressure of the warm air by providing the air.

Next, a fourth embodiment shown in FIG. 7 will be described. In this embodiment, a warm air generator 12 for heating and supplying indoor air is used as the heating means. Things. The hot air generator 12 is, for example,
A hot air generating unit 12c composed of a heater and a fan is installed on the top plate 11a-3 of FIG. 1a, and one end of the hot air generating unit 12c is connected to the hot air generating unit 12c so as to be arranged through the space behind the blower 41. -1 is provided with a heater (heating device) 12b for heating the exhaust gas flow, and the partition plate 21 and the partition plate 21 and the substantially inverted L-shaped nozzle body 12a-3 connected to the air guide tube portion 12a-1 are viewed from the side. The configuration is the same as that of the third embodiment in which hot air is blown toward the current plate 51.

In the fifth embodiment shown in FIG. 8, the rectifying plate 51 is not provided, and hot air is blown from the nozzle portion 12a'-3 to the partition plate 21 and the lower opening of the hood body 11. Thus, the members inside the hood body 11 and the upstream side including the filter 31 are heated so that the steam adhered by the hot air does not dew.

Further, the sixth embodiment shown in FIG. 9 shows a flat exhaust device for an IH cooking heater in which an outdoor blower is installed outside the hood 11. In the exhaust device A for an IH cooking heater, a rectifying plate 51 is detachably provided in a lower opening portion of a hood body 11 formed of a flat box body in a structure similar to that of the second embodiment, and the hood body 11 is provided. The filter 31 is detachably provided on the back plate 11a-1 side, and the heating device 2 is attached or painted on the inner surface of the current plate 51, and the space behind the filter 31 is separated from the hood body via the communication duct D1. It is configured to communicate with a blower (not shown) to be installed in the air conditioner. The direct heating of the rectifying plate 51 by the heat generated by the heat generating device 2, the heating by the heat transmitted to the side plate 11a-2 of the hood body 11, the top plate 11a-3 and the side surface 11a-2 of the hood body 11, The hot air that indirectly heats the filter 31 prevents dew condensation.

In the present invention, the heat generator and the hot air generator can be used in combination.

Although the embodiments have been described on the basis of a conventional range hood called a boot type or a flat type, a covering portion (a hood body) having a lower side and an upper depth is provided. The present invention is directed to any configuration having a filter in the parentheses.

In the case of the embodiment having a current plate in the present invention, it goes without saying that the fan and the filter can be removed and the whole can be washed by removing the current plate.

[0030]

As described above, according to the present invention, a hood is provided with at least a filter in a hood body whose lower side is a suction side, and an outdoor blower is installed inside or outside the hood body. Since the hood is heated to a non-condensing atmosphere, steam attached to the inner surface of the hood and the upstream members including the filter does not cause condensation.
An exhaust device for an H cooking heater can be newly provided. Therefore, there is no danger of dew condensation on the IH cooking heater, the cooking container and the like at the time of cooking to contaminate them.
In addition, in a configuration in which a part of the exhaust air flow is effectively used or the humidity detection unit detects and interlocks with the humidity, the dripping of the dew can be automatically and permanently prevented. Does not require any. In addition, when a conductive heat-generating paint is used as the heat-generating device that is a means for heating, it contributes to the weight reduction of the exhaust device as a whole, and is preferable because it does not impose a burden on the mounting portion to the installation wall. Becomes

[Brief description of the drawings]

FIG. 1 is a side sectional view of an exhaust device for an IH cooking heater according to a first embodiment.

FIG. 2 is a side sectional view of an exhaust device for an IH cooking heater according to a second embodiment.

3 is an enlarged cross-sectional view taken along line (3)-(3) of FIG.

FIG. 4 is a perspective view of the exhaust device for the IH cooking heater.

FIG. 5 is a partially cut-away side view of an exhaust device for an IH cooking heater according to a third embodiment.

6 is an enlarged sectional view taken along line (6)-(6) of FIG.

FIG. 7 is a partially cutaway side view of an exhaust device for an IH cooking heater according to a fourth embodiment.

FIG. 8 is a partially cut-away side view of an exhaust device for an IH cooking heater according to a sixth embodiment.

FIG. 9 is a partially cut-away side view of an exhaust device for an IH cooking heater according to a seventh embodiment.

[Explanation of symbols]

A: Exhaust device for IH cooking heater 1: Hood 11: Hood body 2:
Means for heating 41: Blower 12:
Hot air generator 31: Filter 3:
Detecting means (humidity sensor) 4: Control unit 12a'-3: Nozzle unit 51: Rectifier plate 12b:
heater

Claims (8)

[Claims] A hood is provided with at least a filter in a hood body having a lower side as a suction side, and an outdoor blower is installed in a space behind the filter of the hood body or outside the hood body to prevent dew condensation on the hood. An exhaust device for an IH cooking heater characterized by heating to an atmosphere. 2. The means for heating the hood to a non-condensing atmosphere is a heating device, which is provided on an upstream member including a filter and / or on an inner surface of the hood. The exhaust device for an IH cooking heater as described in the above. 3. The means for heating is a hot air generator, and heats a part of exhaust air from a blower installed in the hood body by a heater to heat the hood from below to the hood body. The exhaust device for an IH cooking heater according to claim 1, wherein the exhaust device is heated. 4. The means for heating is a hot air generator, which takes in indoor air or outdoor air and heats it with a heater to heat the hood from below to the hood body. The exhaust device for an IH cooking heater according to claim 1, wherein: 5. An exhaust device for an IH cooking heater, wherein the means for heating comprises the heat generating device according to claim 2 and the hot air generating device according to claim 3. 6. The exhaust device for an IH cooking heater according to claim 2, wherein the heating device is a conductive heating paint. 7. The IH according to claim 2, wherein the heat generating device is linked with the operation of the blower.
Exhaust device for cooking heater. 8. The apparatus according to claim 1, wherein a detecting means for detecting humidity is provided in the hood, and a heating device or a hot air generating device is activated when a predetermined humidity is detected by the detecting means. 7. The exhaust device for an IH cooking heater according to 2 or 4 or 5 or 6.