JPH09273784A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the affection of heat capacity of a hood (fore plate) to the temperature detection of outside and inside of the hood by a method wherein detectors, detecting the temperatures of outside and inside of the hood, are attached to the rear side and front side of the fore plate so that they are attached back to back at the substantially same position in the horizontal and vertical direction of the fore plate. SOLUTION: An internal temperature detector 9, detecting a temperature in a hood, and an external temperature detector 10, detecting the external temperature of the hood, are attached to the fore plate 1b of a range hood A. The attaching positions of the internal temperature detector 9 and the external temperature detector 10 are at the substantially center position of the width of the fore plate 1b with a height higher than 1/2H of a height H of the fore plate 1b from the lower end of the same and a lower side than the upper end of the fore plate 1b is preferable. The internal temperature detector 9 and the external temperature detector 10 are attached to said place in the fore plate 1b back to back so as to be faced to respective spaces. According to this method, the detection of temperature by the temperature detectors can be effected without any affection of the heat capacity of the fore plate, which becomes an error.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood having a built-in blower unit installed above cooking utensils such as a gas range and an electric range. More specifically, the blower unit is automatically operated by a temperature difference between the inside and outside of the hood. Started,
Or, it relates to an automatically operated range hood in which the operation is automatically stopped.

[0002]

2. Description of the Related Art There has been proposed a range hood having a blower unit built therein, in which operation / stop of the blower unit is automatically controlled by a temperature difference between the inside and outside of the hood. That is, when a cooking utensil such as a gas cooker or an electric cooker is used, the temperature inside the hood becomes higher than the temperature outside the hood. When the difference between the temperature inside the hood and the temperature outside the hood exceeds the first set value, the blower unit is automatically operated. Further, when the use of the cooking utensil is stopped, the temperature difference becomes small. When the temperature difference becomes equal to or lower than the second set value, the operation of the blower unit is stopped.
The inside and outside temperature detectors for detecting the inside and outside temperatures of the hood are attached at different positions.

For example, an inner temperature detector for detecting the use of cooking utensils is used as the lower end of the hood, and an outer temperature detector is attached to the upper part of the hood or a curtain plate attached to the top plate of the hood, so that the condition for starting operation is set. It makes it easy to take a temperature difference between inside and outside.

[0004]

However, since the front plate forming the hood also becomes hot due to the rise of hot air accompanying the use of the cooking utensil and has a heat capacity, it is difficult to take a difference in temperature between the inside and the outside to judge the discontinuation of use of the cooking utensil. Therefore, there is a problem that an error easily occurs. Then, the above-mentioned determination of stop of use of the cooking utensil becomes more complicated when the range of the cooking utensil is two to three. Especially when the outside temperature detector is attached to the upper part of the hood or the curtain plate on the upper surface of the hood, the upper part of the front plate of the hood is considerably warmed by the hot air accumulated in the hood during that time due to the use of cooking utensils, Therefore, since the front plate is affected by heating,
It is not suitable as an outside temperature detection position for detecting the inside / outside temperature difference.

The present invention has been made in view of the above-mentioned problems of the prior art, and the purpose thereof is to:
An object of the present invention is to provide a range hood capable of measuring the temperature detection inside and outside the hood that controls the automatic operation and automatic stop of the blower unit without being affected by the heat capacity of the hood (front plate).

[0006]

Means for Solving the Problems The technical means taken by the present invention to achieve the above object are an inner temperature detector for detecting an inner temperature of a hood and an outer temperature detecting for detecting an outer temperature of the hood. The hood is attached to the back side and the front side of the front plate of the hood, and the inner temperature detector and the outer temperature detector thereof are attached back to back at substantially the same positions in the horizontal and vertical directions of the front plate. The form of the range hood equipped with a blower unit is one in which the inside of the hood is partitioned by a partition plate and a filter and the blower unit is housed inside the hood.
Alternatively, the hood may be equipped with a blower unit completed by itself in the hood.

As a mounting position of the above-mentioned inside temperature detector and outside temperature detector, at the center of the front plate in the lateral direction (width direction),
It is preferable that the longitudinal direction (height direction) be 1/2 or more from the lower end of the front plate. Further, the inner temperature detector and the outer temperature detector attached to the front plate have a unit structure integrally assembled with a single case attached to the front plate. It is desirable that the sensor can be connected with a single connector. The case is formed into a rectangular shape, and the inside thereof is divided into upper and lower chambers by a partition plate, and by forming the openings of the upper and lower chambers in a staggered manner in the front and back, the openings appear on the front side and the back side of the front plate, and The inside and outside temperatures can be measured at almost the same position.

According to the above construction, since the inner temperature detector for detecting the temperature inside and outside the hood and the outer temperature detector are attached to the front plate of the hood at substantially the same positions on the front and back sides, the temperature detection is performed. In the temperature detection by the cooker, it is possible to perform the measurement without the influence of the heat capacity that causes an error, and it is possible to reliably detect the temperature change at the start and stop of use of the cooking utensil. Also, the inner temperature detector and the outer temperature detector attached to the front plate should be mounted at the center of the front plate in the width direction and the height direction should be 1/2 or more of the height from the lower end of the front plate. Then, the detected value of the outside temperature can be measured as a value that is not affected by the hot air accumulated in the hood during the usage time of the cooking utensil. Thereby, the detected value of the outside temperature can be measured as a value that can obtain an appropriate difference from the detected value of the inside temperature. Further, the unit structure in which the inside temperature detector for detecting the inside and outside temperatures of the hood and the outside temperature detector are combined in a single case attached to the front plate, the detector can be easily attached. .

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a range hood installed in a kitchen or the like, where A is a range hood having a blower unit built therein, B is a cooking appliance such as a gas range or an electric range, and the range hood A is a cooking appliance. It is installed just above B. The range hood A includes a lower plate 2 and a filter 3 for accommodating a blower unit 4 inside a hood 1 which is configured by detachably attaching a front plate 1b to a front surface of a hood body 1a whose bottom and front surfaces are open. In the well-known form in which the section 5 is partitioned and formed, the exhaust duct 6 is connected to the outlet of the fan casing in the blower unit 4, and the curtain on the top plate of the hood 1 that shields from the ceiling. A plate 7 is provided so that the exhaust duct 6 is out of the sight of the user standing in front of the cookware B.

A blower unit 4 housed in the hood 1
Is a well-known one including a fan casing, a fan and a motor, and a multi-blade fan is used as the fan. Further, an operation switch for operating the above-mentioned blower unit 4 on the lower front portion of the front plate 1b constituting the hood 1 and an operation switch for turning on / off a lamp attached to the lower rear portion of the front plate 1b. Switches 8 are attached.

An inner temperature detector 9 for detecting the temperature inside the hood 1 and an outer temperature detector 10 for detecting the temperature outside the hood 1 are attached to the front plate 1b of the hood 1 of the range hood A constructed as described above. Has been. The inner temperature detector 9 and the outer temperature detector 10 are attached at a substantially central position of the width of the front plate 1b, and more than 1 / 2H of the height (H) from the lower end of the front plate 1b. Is preferably lower than the upper end, and an inner temperature detector 9 and an outer temperature detector 10 are mounted back to back at their corresponding positions on the front plate 1b so as to face their respective spaces.

The inner temperature detector 9 and the outer temperature detector 10 are constructed by housing temperature sensors 9a and 10a in a case 11, respectively, and the details thereof will be described with reference to FIGS.
The case 11 is formed in a rectangular shape by a synthetic resin material, and the inside thereof is divided into two upper and lower chambers 11b and 11c by a partition wall 11a, and an opening side between the upper chamber 11b and the lower chamber 11c.
12a and 12b are formed in a staggered shape, and the opening side and the opposite side are closed by a bottom plate. And upper chamber 11b and lower chamber
Grooves 13 for accommodating and mounting the temperature sensors 10a and 9a are formed on the inner surface of 11c so as to face each other. By inserting a holding plate 14 holding the temperature sensors 10a and 9a into the groove 13, the outside temperature of the upper chamber 11b can be increased. The detector 10 has an inner temperature detector 9 integrally formed in the lower chamber 11c.

Further, the upper chamber 11b and the lower chamber in the case 11 are
A lid plate having slits formed in openings 12a and 12b of 11c, respectively.
15a and 15b are attached so that the upper chamber 11b communicates with the outer space of the hood 1 and the lower chamber 11c communicates with the inner space of the hood 1, respectively. The portion of the upper chamber 11b where the opening 12a is formed is formed by projecting a tubular portion 16 which is slightly smaller than the outer shape of the case 11, and the hook 17 of the lid 15a is attached to the outer peripheral surface of the tubular portion 16. Are formed. Therefore, the above case
To attach 11 to the front plate 1b, a through hole 18 slightly larger than the tubular portion 16 is opened at the above-mentioned predetermined position in the front plate 1b, and the tubular portion 16 of the case 11 is inserted into the through hole 18 from the back side of the front plate 1b. Insert it so that it projects toward the front of the front plate 1b, and the projecting cylindrical portion 16
By engaging the lid 15a with the front plate 1b,
It is sandwiched by 15a, whereby the case 11 is fixed to the front plate 1b, and the upper chamber 11b partitioned into the case 11 communicates with the outer space of the hood 1 and the lower chamber 11c communicates with the inner space of the hood 1 and faces them. It will be.

Further, the upper chamber 11b and the lower chamber of the case 11 described above
A cutout is formed on the peripheral wall of 11c to guide the lead wires 9b, 10b connected to the temperature sensors 9a, 10a to the outside of the case 11, and a single connector is provided at both ends of the lead wires 9b, 10b. 19 is connected and attached, and this connector 19 is detachably connected to a detection control unit or the like (not shown) for controlling the operation / stop of the range hood A. Although the inner temperature detector and the outer temperature detector in the above-described embodiment have a unit structure to be housed in a single case, the inner temperature detector and the outer temperature detector are assembled in different cases, respectively, and are attached to the front plate 1b. It goes without saying that it may be attached.

[0015]

According to the range hood of the present invention, the inner temperature detector for detecting the temperature inside and outside the hood and the outer temperature detector have substantially the same positions on the front and back sides of the front plate of the hood. Since it is attached to the temperature detector, it is possible to detect the temperature by the temperature detector without the influence of the heat capacity that causes an error, and it is possible to reliably detect the temperature change at the start and stop of use of the cooking utensil. it can. Further, according to the structure of claim 2, even if the cooking utensil has two or three stoves and the stove used is the left stove or the right stove, the inner temperature detector and the outer temperature detector Since it is installed in the center of the front plate in the width direction, it is possible to eliminate the occurrence of errors due to the stove used, which makes it possible to detect the temperature inside and outside the hood in the same state at all times. It is possible to automatically control the operation and stop. And, the mounting height of the temperature detector is set to 1/2 or more of the height from the lower end of the front plate, so that the outside temperature detection value is not affected by the hot air accumulated in the hood during the usage time of the cooking appliance. It can be measured as a value. Thereby, the detected value of the outside temperature can be measured as a value that can obtain an appropriate difference from the detected value of the inside temperature. Furthermore, with the configuration of claim 3, the detector can be easily attached and electrically connected.

[Brief description of drawings]

FIG. 1 is a front view showing an installed state of a range hood according to the present invention.

FIG. 2 is a partially cutaway side view of FIG.

FIG. 3 is an exploded perspective view of a temperature detector.

FIG. 4 is an enlarged sectional view showing a state in which a temperature detector is attached to the front plate.

[Explanation of symbols]

 A ... Range hood B ... Cooking equipment 1 ... Hood 1a ... Hood main body 1b ... Front plate 4 ... Blower unit 9 ... Inner temperature detector 10 ... Outer temperature detector 11 ... Case 19 ... Connector

Claims (3)

[Claims] 1. A blower unit is housed inside a hood having an open lower surface, and when the temperature difference between the inside and outside of the hood reaches or exceeds a first set value, the blower unit automatically starts operation. In the range hood that stops operation when it becomes less than or equal to the second set value, the inner temperature detector and the outer temperature detector that detect the temperature inside and outside the hood are attached to the back side and the front side of the front plate of the hood, and The range hood, wherein the temperature detector and the outside temperature detector are attached back to back at substantially the same positions in the horizontal and vertical directions of the front plate. 2. The mounting position of the inside temperature detector and the outside temperature detector is at the center of the front plate in the horizontal direction, and the vertical direction is at a position half or more from the lower end of the front plate. The range hood according to claim 1. 3. The inner temperature detector and the outer temperature detector,
The range hood according to claim 1 or 2, wherein the lead wires assembled to a single case attached to the front plate and connected to respective detectors are connected to one connector.