JP2005214584A - Range hood for ih cooking heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a range hood for an IH cooking heater being slim and optimum for preventing dew formation. <P>SOLUTION: This range hood is constituted in such a way that an exhaust means 2 is provided outside a hood body 1, the hood body 1 is formed into a thin type, and the hood body 1 is provided with a recessed part 21 for catching polluted air by cooking to block an opened part on its lower face. A stream F of air for drying and a stream H of air for promoting drying are fed out along a recessed face 21b in the recessed part 21 from an opened fringe of the hood body 1 and are introduced into a filter 41 provided by facing the recessed part 21 while coming into contact with the recessed face 21b. Consequently, it is possible to prevent dew formation on an inner face of the recessed part 21 and in the filter 41 by the stream F of air for drying and the stream H of air for promoting drying led into the filter 41 along the inner face of the recessed part 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a range hood for an IH cooking heater that sucks and exhausts contaminated air from an IH cooking heater that does not generate combustion gas.

  Conventionally, a range hood for an IH cooking heater has a U-shaped convection-flow blowing pipe vertically suspended from the back of the hood body having an open portion so that the height can be adjusted. It is known that the convection air is blown upward, contaminated air that does not generate ascending airflow is urged into the hood body, and the hood body has an atmosphere in which condensation does not occur (for example, patents) Reference 1).

By the way, when a gas combustion appliance or an electric stove is used, dew condensation does not occur because the upstream member including the inner surface of the hood body and the filter is heated by the heat of the rising airflow.
However, when the IH cooking heater described above is used, there is no ascending air current, and therefore condensation occurs on the inner surface of the hood body.
As a result, there is a reality in which condensed water drops during cooking, and the heater, cooking container, and even cooking being cooked are soiled.
For such a reality, in the prior art, a convection flow is blown upward from a U-shaped convection-flow blowing tube whose height can be adjusted from the back of the hood body, and the hood is used in the traction flow. The inside of the body is in an atmosphere that does not cause condensation.
However, the range hood for an IH cooking heater having such a configuration is used in a state where it is positioned as far down as possible from the convection-flow blowing pipe in order to effectively induce contaminated air generated during cooking.
Therefore, the induced flow is diffused to the outside of the hood as it rises, and it is difficult to say that it is suitable for preventing condensation.

In addition, various kitchen layouts incorporating Western styles have been proposed today, and many system kitchens that emphasize design in harmony with them have appeared. The range hood incorporated in these system kitchens is also expected to have a design that matches these, and recently the hood body part that has the greatest influence on the capture of contaminated air generated by cooking is made very thin. The slim type range hood is eagerly desired.
And since the IH cooking heater does not generate combustion gas or ascending airflow, it can capture contaminated air even in a shallow capture space without providing a deep capture space. However, in a thin (slim) range hood with an exhaust means installed outside, the degree of freedom in design can be expanded and the flexibility according to the needs of customers can be provided.
In reality, a range hood that requires a deep capture space and a range hood for an IH cooking heater that installs an exhaust device inside the hood are provided, and this causes a problem that a novel design cannot be implemented as a hood body. Not just that, it's also clunky.
Japanese Patent Laid-Open No. 2002-168896

The present invention has been made in view of the above-described conventional circumstances, and the object of the process is to provide a range hood for an IH cooking heater that is optimal for preventing condensation.
Another object is to provide a range hood for a slim IH cooking heater.

The technical means taken in order to solve the said subject is the range hood for IH cooking heaters which sends a wind toward the inside of a food | hood body from the open edge part of a food | hood object (Claim 1).
The wind is a wind for drying (Claim 2), and sending out the wind for drying toward the suction port to the exhaust means of the hood body generates a flow that induces the contaminated air to the hood body. This is preferable.
The wind is preferably sent inward to the hood body from both the left and right edges or the three or four edges of the open edge portion of the hood body.
That is, a continuity (air passage, chamber, etc.) with a blower source is provided in the hood continuously from the wind sending part provided at the open edge portion of the hood, and the air fed through the communication part is supplied with the air. It is preferable to use a configuration in which the feed portion is fed into the hood body.
The hood body is not limited to a flat shape, a boot shape, or the like.

  According to the above means, the wind sent directly toward the hood body from the open edge portion, which is the lower edge of the hood body, which is the object of condensation prevention, raises the temperature of the surface inside the hood body and prevents the adhesion of steam. A boundary layer to avoid is formed between the surfaces to prevent condensation.

Then, an exhaust means is installed outside the hood body, the hood body is formed thin, and the hood body is provided with a recessed portion for capturing contaminated air by cooking so as to close the open portion of the lower surface. Then, the wind for drying is sent out from the open edge of the hood body along the concave surface of the concave portion, and is guided to the suction port member provided facing the concave portion while contacting the concave surface of the concave portion. It is effective if it is constituted so that it can be (claim 3).
The suction port member is a filter or a blindfold plate (such as a plate having a plurality of lattice frames or a plurality of relatively large slits) that covers the suction port so that the exhaust means does not enter the field of view.

  According to the above means, the temperature of the inner surface of the recessed portion is increased by the drying wind guided to the suction port member along the inner surface of the recessed portion, and steam is not brought into contact with the inner surface of the recessed portion. Exhaust.

Further, it is more preferable that the drying-promoting wind is sent out along the concave surface of the recessed portion from between the drying-out wind sending portion and the suction port member.
It is preferable that the drying-promoting wind is sent out so as to reach the suction port member from at least the left and right sides, the three sides, the four sides of the suction port member, or substantially the entire length.
And like the wind for drying, the communication part (an air path, a chamber, etc.) with a blower source is provided in the hood continuously to the delivery part provided in the concave part, and the pressure is fed through the communication part. It is preferable that air is sent out.

  According to the above means, the flow of the drying air itself along the inner surface of the recessed portion is promoted by the flow of the wind for promoting the drying, so that the temperature rise of the entire inner surface of the recessed portion and the formation of the boundary layer are ensured. To do.

  In addition, when a gentle guide curved surface is formed that guides the corner between the side peripheral surface and the bottom surface of the concave portion to the suction port member, no counter pressure is applied to the contaminated air (Claim 6), and the guide curved surface If the suction port member is continuously arranged, the drying air can be more reliably supplied to the suction port member (Claim 7), and both are suitable.

And if a baffle plate is arranged so that a suction gap may be secured between the edges of the recessed portion and the drying air is sent out from the open edge portion of the hood body toward the baffle plate, Even in the type of range hood, condensation on the current plate can be prevented (claim 8).
Here, since the current plate is disposed with the suction gap remaining between the edges of the recessed portion, when the suction gap is secured around the four sides of the current plate, the drying flow is sent out toward the current plate. There is a risk that the wind will be attracted to the contaminated air that is sucked in at the suction gap at a higher flow rate and will not reach the current plate. For this reason, a suction gap is not provided on the trailing edge side of the rectifying plate where the amount of contaminated air is relatively small, and the drying air is sent out from the trailing edge length direction of the hood body corresponding to the trailing edge side of the rectifying plate toward the rectifying plate. It is preferable to do this.

Then, a wind for preventing cross wind interference is sent downward from the open edge portion of the hood body (Claim 9), or a chamber is formed in the hood body behind the recessed recess, and the recessed portion is formed from the chamber. A drying wind is sent out into the recess (claim 10), or a drying wind and a drying promoting wind are sent out from the chamber toward the recess (claim). 11) Further, a wind for drying toward the recessed portion, a wind for promoting drying, and a wind for preventing cross wind interference toward the lower side are sent out from the chamber ( Claim 12), a wind for drying from the chamber toward the recessed portion, a wind for promoting drying, a wind for drying toward the rectifying plate, and a cross wind interference prevention further downward Configured to send out the wind for As you common communication path to the source, to which it is suitable (claim 13). If the drying air is a heated air or a dehumidified air, it is possible to more efficiently prevent the occurrence of condensation (claims 14 and 15).
The above-mentioned wind (dry air) means air having a humidity lower than that of contaminated air containing water vapor generated at least during cooking, and sucks and sends indoor air or outdoor air, and heats it before sending it out. Or dehumidifying, it becomes the most suitable wind for drying.

Since the present invention is configured as described above, the air that is sent out (drying air) leaks out of the hood body, or is all sent out into the hood body without diffusing, raising the temperature of the inner surface of the hood body, Since the boundary layer that prevents adhesion is formed, dew condensation can be reliably prevented.
In addition, if the wind is also sent out toward the suction port toward the exhaust means of the hood body, the contaminated air is effectively attracted to the hood body, contributing to the prevention of the diffusion of the contaminated air to the outside. (Claims 1 and 2).

The air for drying is sent out along the inner surface of the recessed portion for capturing the contaminated air and brought into contact with the inner surface of the recessed portion so as to be guided to the suction port member provided facing the recessed portion. Since it comprises, the dew condensation of the inner surface of the recessed part to which steam mainly adheres can be prevented (Claim 3).
In addition, since the exhaust means is arranged outside, the hood body is thin, and it is possible to implement innovative designs, increasing the degree of freedom in design, and giving customers flexibility in design that meets their needs. it can.

  In addition, if the drying wind is sent out along the concave surface of the concave portion from between the air sending portion for drying and the suction port member, the wind for drying along the inner surface of the concave portion is obtained. The flow of the air itself is promoted by the flow of wind for promoting drying, so that the temperature rise of the entire inner surface of the recessed portion and the formation of the boundary layer can be ensured, and the effect of preventing the optimum dew condensation can be achieved.

If the corner between the side surface and the bottom of the concave part is formed with a gentle guide curved surface, the flow of the drying wind that is smoothly promoted without applying back pressure that hinders the rise of contaminated air At the same time, the polluted air can be exhausted.
In addition, when the suction port member arranged continuously to the guide curved surface is used, it is possible to reliably prevent dew condensation on the suction port member by the accelerated flow of drying air.

  And even if it is a range hood which has a baffle plate, dew condensation is not generated on a baffle plate (Claim 8).

  In addition, contaminated air that is affected by a slight amount of crosswind caused by the movement of a person in the kitchen, opening and closing of the door, air-conditioning maintenance, etc. without rising air can be reliably urged to the hood body (claim 9).

  In addition, if a chamber is formed in the hood behind the recessed portion, and the drying air is sent out from the chamber into the recessed portion, the space behind the recessed portion can be used effectively, and drying is performed. Since the air flow path for the air is not exposed, a simple design can be provided (Claim 10), and a chamber is formed in the hood body behind the recessed portion, and drying from the chamber toward the hood body is performed. In addition to the effect of the tenth aspect, in addition to the effect of the tenth aspect of the present invention, it is configured to send out the wind of the air and the wind for promoting drying, or to send the wind of the dry wind to the current plate and the wind for preventing the cross wind interference. It is possible to guide the hood body by using two air sources without causing the influence of the cross wind on the polluted air not accompanied with the updraft, and the structure is simple (claims 11, 12, 13).

  Hereinafter, an embodiment of a range hood for an IH cooking heater according to the present invention will be described with reference to FIGS. 1 to 8. FIGS. 1 to 5 show the first embodiment, and FIG. 6 shows the second embodiment. FIG. 7 shows the third embodiment, FIG. 8 shows the third embodiment, and FIG. 9 shows the fourth embodiment.

If it demonstrates based on FIGS. 1-5, the code | symbol A is the range hood for the IH cooking heater. In each embodiment, a thin type range hood is shown.
In the range hood A, the exhaust means 2 is installed on the top plate portion 11 of the flat and thin box-shaped hood body 1 whose lower surface is opened, and the exhaust means 2 is concealed by the curtain plate 3 erected from the front, and the lower surface is opened. The concave portion 21 is provided in a part, and the concave portion 21 is used as a trapping space (contaminated air capturing portion) S for contaminated air generated by cooking, and a suction port 31 is provided on the top surface (bottom surface) of the concave portion 21. The filter 41 is detachably provided as a suction port member, and the chamber 4 is defined in the hood body 1 behind the recessed portion 21.

  As shown in FIGS. 1 and 3, the recessed portion 21 forms a gentle guide curved surface 21 a at the corner between the side peripheral surface and the bottom surface that is the top surface portion, and continuously opens the suction port 31. In addition, a filter 41 is detachably provided.

  As shown in FIGS. 1, 3, etc., the chamber 4 has a recessed portion 21 in the hood body 1 except for a communication path 51 that connects the filter 41 and the exhaust means 2 on the top plate portion 11 of the hood body 1. It is formed so as to cover the back, and communicates with an air source (sirocco fan) 5 provided so as to be hidden by the curtain plate 3, and the front side portion 14, left and right side portions 24 and 24, and the rear side portion of the chamber 4. 34 along the lengthwise direction 34 of the drying wind feed hole 6, and the concave surface 21 b of the concave recess 21 between the drying wind feed hole 6 and the grease filter 41. The flow of the drying wind from the drying promotion wind sending hole 9 for sending the drying promoting wind and the wind sending hole 7 for preventing the cross wind interference is used as a common communication path with the air source 5. F, wind flow H for promoting drying, and wind flow D for preventing cross wind interference It is adapted to send out.

As shown in FIG. 3, the blower source 5 includes a heater 15 or a dehumidifying means, and heats or dehumidifies the air to supply the air to the chamber 4.
When the heater 15 is used, the concave portion 21 itself is heated through the chamber 4 by the heated air, so that the occurrence of condensation can be more effectively prevented.
In the case of a heater, it is preferable to use a PTC heater in consideration of the occurrence of a fire.

  As shown in the enlarged views of FIGS. 2 and 4, the drying air sending hole 6 for drying and the wind sending hole 9 for promoting drying are provided at the lower end portion of the side peripheral surface of the recessed portion 21 as a chamber. 4 is cut in an inward direction and is opened in a band shape as shown in FIG. 5 so as to send out the wind along the concave surface 21b starting from the lower end portion of the side circumferential surface of the concave recess portion 21. Yes.

  The wind feed hole 7 for preventing the cross wind interference is formed by a large number of small holes or strip-like holes which are opened at the lower end surface of the chamber 4 at equal intervals. As shown in the enlarged views shown in FIGS. An opening is formed in the inclined surface 21c slightly upward with respect to the horizontal line, and the cross wind interference prevention flow D is inclined slightly outward (about 5 to 20 degrees in the present embodiment) with respect to the vertical line. Is supposed to be sent out.

  Immediately below such a range hood A, an IH cooking heater B is provided as a cooking appliance at a position slightly in front of the range hood A, and interference of cross wind with contaminated air C containing water vapor generated by heating cooking. Is prevented by the cross wind interference prevention flow D, and the rising contaminated air C is guided to the capture space (capture portion) S of the concave portion 21, and the concave surface 21 b and the filter 41 are further connected to the concave portion 21. The air flow F for drying sent out from the lower end of the side peripheral surface of the water and the air flow H for promoting drying heat the concave surface 21b and the filter 41 continuous thereto to form a boundary layer that does not attach steam. Dry to prevent condensation.

Next, a second embodiment shown in FIG. 6 will be described. This embodiment is a case where the suction port member is a blindfold plate 41 for preventing the exhaust means 2 from being conspicuous from below.
In this case, the filter function is an uneven portion formed on the inner surface of the casing 12 of the sirocco fan that constitutes the exhaust means 2, and the water receiving portion 22 that can communicate with and disengage from the lower end of the casing 12 is provided.
Since other configurations are the same as those of the first embodiment described above, the same reference numerals are given, and detailed descriptions thereof are omitted.

Next, a third embodiment shown in FIG. 7 will be described. In this embodiment, a suction gap Q is secured between the four open edges of the recessed portion 21 in the first embodiment. This is a range hood A for an IH cooking heater provided with a current plate 8.
In this embodiment, the drying wind is sent toward the rectifying plate 8 between the drying wind sending hole 6 and the cross wind interference preventing wind sending hole 7.

  That is, the drying wind is directed toward the surface of the rectifying plate 8 from the length direction of the lower end of the front side portion 14 where the air blowing hole 6 for drying is opened in the chamber 4 or the length direction of the rear side portion of the chamber 4. Are formed by a large number of small holes or strip-shaped holes spaced at regular intervals, and a wind flow G for drying is sent from the holes 16 toward the surface of the rectifying plate 8.

The rectifying plate 8 has the purpose of increasing the flow velocity from the suction gap Q secured between the open edge of the recessed recess 21 and sucking the contaminated air C and the purpose of concealing the filter 41 and the blindfold plate 41.
When the wind flow F for drying is sent out from the delivery hole 16 toward the surface of the current plate 8 from the chamber 4, it interferes with the contaminated air C sucked in from the suction gap Q at a high flow rate, and the contaminated air C There is a possibility that the suction action may be obstructed, or the wind flow G for drying may be sucked without reaching the surface of the current plate 8 due to the suction action.
Therefore, in this embodiment, the suction holes Q and Q facing the left and right edges of the rectifying plate 8 are not provided with the delivery hole 16, and the contaminated air C is sucked from the left and right suction gaps Q and Q. The air flow G, G for drying to overcome the suction force of the contaminated air C sucked from the suction gaps Q, Q is performed from the lower end of the front side portion 14 of the chamber 4 and the lower end of the rear side portion of the chamber 4 and Try to dry.
In addition, since the IH cooking heater B is provided as a cooking appliance slightly in front of the range hood A, the rear side of the chamber 4 has a low flow of contaminated air C on the rear side of the hood body 1. Of course, it is possible to avoid the condensation on the flow straightening plate 8 by sending the wind flow G for drying with a force that is not inferior to the suction force of the contaminated air C sucked from the suction gap Q from only the portion.

  The wind feed hole 7 for preventing the cross wind interference is provided from the outside of the feed hole 16 for the wind for drying toward the surface of the rectifying plate 8 in the same manner as in the above-described embodiment, and the cross wind interference preventing flow D is provided. It is designed to generate.

  The range hood A for an IH cooking heater configured as described above can prevent condensation on the rectifying plate 8 in addition to the embodiment described above.

Further, the fourth embodiment shown in FIG. 8 will be described. This embodiment is the same as the third embodiment having the rectifying plate 8, and the contaminated air to the rear side of the hood body 1 as described above. Focusing on the fact that the flow of C is small, the suction gap Q on the rear side is eliminated, and the wind for drying is sent to the surface or both surfaces of the current plate 8 only to the rear side 34 of the chamber 4 facing the current plate 8. The holes 16 and 16 are opened.
In this configuration, the cross wind interference prevention flow D is sent out as a curtain flow from the front side portion 14 and the left and right side portions 24 and 24 of the chamber 4, and the contaminated air C is sucked into the suction gap Q facing both the front edge and the left and right edges of the rectifying plate 8. The flow G of the drying wind can be sent out from the rear side portion 34 of the chamber 4 which is sucked from Q and not subjected to the sucking action toward the surface or the front and back surfaces of the current plate 8.

  Further, the fifth embodiment shown in FIG. 9 will be described. This embodiment does not include the wind feed hole 7 for preventing the cross wind interference in the third and fourth embodiments.

Side surface sectional drawing of the range hood for IH cooking heaters of 1st Embodiment. The enlarged view of the principal part of FIG. (3)-(3) sectional view taken on the line of FIG. The enlarged view of the principal part of FIG. Bottom view. Front sectional drawing of the range hood for IH cooking heaters of 2nd Embodiment. The expanded sectional view of the principal part of 3rd Embodiment. The expanded sectional view of the principal part of 4th Embodiment. The expanded sectional view of the principal part of 5th Embodiment.

Explanation of symbols

A: Range hood 1: Hood body 21: Recessed part S: Capture space (capture part)
11: Top plate portion (top plate portion of hood body) 31: Suction port 2: Exhaust means 8: Rectifying plate 41: Filter (suction port member) 4: Chamber 21b: Concave surface 21a: Guide curved surface 6, 16: For drying Wind blowout hole 7: Wind blowout hole for crosswind interference prevention 5: Air source C: Contaminated air D: Crosswind interference prevention flow F, G: Flow of wind for drying B: IH cooking heater 9: Wind for drying promotion Feed hole

Claims (15)

  A range hood for an IH cooking heater, characterized in that air is sent out from the open edge of the hood toward the hood.   The range hood for an IH cooking heater according to claim 1, wherein the wind is a wind for drying.   Exhaust means is installed outside the hood body, the hood body is formed thin, and the hood body is provided with a recessed portion for capturing contaminated air by cooking so as to close the open portion of the lower surface, and the recessed portion The exhaust means is provided with a suction port member, and drying air is sent out from the open edge of the hood body along the concave surface of the concave portion and sucked while contacting the concave surface of the concave portion. A range hood for an IH cooking heater, characterized by being guided to a mouth member.   The range hood for an IH cooking heater according to claim 3, wherein the suction port member is a filter provided facing the recessed portion.   The range for an IH cooking heater according to claim 3 or 4, wherein a wind for promoting drying is sent along the concave surface of the concave portion from between the air sending portion for drying and the suction port member. hood.   The gentle guide curved surface which guides the wind for drying to the inlet port member without applying back pressure to the corner between the side peripheral surface and the bottom surface of the recess is formed according to claim 5. Range hood for IH cooking heater.   The range hood for an IH cooking heater according to claim 6, wherein a suction port member is disposed continuously to the guide curved surface.   8. A rectifying plate is provided so as to secure a suction gap between the edge of the recessed portion, and drying air is sent from the open edge portion of the hood body toward the rectifying plate. Range hood for IH cooking heater as described.   The range hood for an IH cooking heater according to claim 7, wherein a wind for preventing cross wind interference is sent downward from an open edge portion of the hood body.   8. The range hood for an IH cooking heater according to claim 7, wherein a chamber is formed in the hood behind the concave portion, and drying air is sent out from the chamber toward the concave portion.   8. The IH cooking heater according to claim 7, wherein a chamber is formed in the hood body behind the recessed portion, and a drying wind and a drying promoting air are sent out from the chamber toward the recessed portion. Range hood.   A chamber is formed in the hood body behind the recess, and a drying wind, a wind for promoting drying, and a wind for preventing cross wind interference are sent out from the chamber into the recess. The range hood for an IH cooking heater according to claim 9, wherein the chamber is configured as a common communication path with an air source.   A chamber is formed in the hood body behind the recessed portion, and from the chamber, a drying wind toward the recessed portion, a drying promoting wind, and a drying wind toward the current plate 9. The range for an IH cooking heater according to claim 8, wherein the chamber is configured to send out a wind for preventing cross wind interference further downward, and the chamber serves as a common communication path with an air source. hood.   The range hood for an IH cooking heater according to any one of claims 1 to 13, wherein the drying air is a heating air.   The range hood for an IH cooking heater according to any one of claims 1 to 13, wherein the drying air is a dehumidified air.

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