JP2011062388A - Sensing element fitting, sensing element assembly, and installation method and maintenance method of sensing element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sensing element fitting, a sensing element assembly, an installation method and a maintenance method of the sensing element, the sensing element being used for an automatic fire extinguisher. <P>SOLUTION: The fitting 102A for the sensing element includes an attachment portion 22A and a holding portion 24A. The attachment portion 22A has a first surface 22a abutting on an outer wall surface 36 of an exhaust duct 3 for a kitchen and fixed on the outer wall surface near an element opening portion 38 provided on the wall of the exhaust duct. The holding portion 24A holds the sensing element so that a sensing portion 10 of the sensing element 1A is positioned inside the element opening portion when the first surface abuts on the outer wall surface, and goes through the element opening portion when the attachment portion is attached to the outer wall surface, and the sensing element can be attached/removed to/from an inside space of the exhaust duct. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fixture for a sensing element, an assembly, a construction method, and a maintenance method. More specifically, the present invention relates to an exhaust duct for a kitchen, a fixture for a sensing element equipped in the kitchen hood, an assembly, a construction method, and a maintenance method.

  Conventionally, from the viewpoint of preventing and suppressing a fire in the kitchen, an automatic fire extinguishing device is operated based on the temperature in the duct or the kitchen hood that exhausts the inside of the kitchen hood, and for that purpose, for example, to detect heat Sensing elements such as temperature sensors are used. FIG. 13 is a block diagram showing the installation of a kitchen using a conventional sensing element fixture, and FIG. 14 is a partial cross-sectional view showing a conventional sensing element fixture and the sensing element mounting state. . As shown in FIG. 13, the exhaust duct 3 and the kitchen hood 4 are provided with nozzles 72 and 74 and temperature sensor assemblies 82 and 84 for automatically injecting a fire extinguishing agent, respectively. Transmission cables 83 and 85 are connected to the temperature sensor assemblies 82 and 84, and the temperature of the temperature sensor is monitored by a control unit (not shown). The control unit monitors the temperature of the airflow based on a signal indicating the temperature detected from the temperature sensor assemblies 82 and 84, and detects the temperature determined to be abnormal. Fire extinguishing agent is sprayed from 72 and 74.

  Here, the kitchen hood 4 is exhausted through the exhaust duct 3 at normal times when cooking is performed in the ranges 64, 64 arranged on the cooking table 62. At this time, the oil component is removed to some extent by the grease filter 66, and the flow rate thereof is adjusted by the damper 68. In such a case, the flame that can lead to a fire is not limited to the flame generated by burning the fuel in the range 64 and the cooking ingredients there during cooking. For example, a flame ignited by oil adhering to the upper part of the damper 68 or inside the duct, or a flame ignited by oil accumulated in the oil receiver 4a in the hood 4 or oil in the oil receiver 66a in the grease filter 66, etc. Can cause. Here, as shown in FIG. 13, the temperature sensor assemblies 82 and 84 and the nozzles 72 and 74 are provided in the exhaust duct 3 and the kitchen hood 4, respectively, to ignite oil adhering to the inside of the damper 68 and the inside of the duct. This is to separately monitor and extinguish the flame that has been ignited and the flame that has ignited the oil accumulated in the oil receiver 4 a in the hood 3.

  In addition to the above-described configuration, other configurations may be employed depending on the configuration of the kitchen facility or automatic fire extinguishing facility. For example, if the damper 68 is equipped with a shutter that detects the temperature and blocks ventilation, and if it is necessary to extinguish the flame in the duct 3 and the flame in the grease filter 66 separately, A temperature sensor assembly and a nozzle may be provided in the grease filter 66 to detect and extinguish the flame of the oil receiver 66a. Further, a temperature sensor assembly and a nozzle directed toward the range 64 may be provided below the hood 4 so as to detect and extinguish the flame of the range 64 from within the hood 4.

  FIG. 14 shows a configuration of a conventional temperature sensor assembly 82. The temperature sensor assembly 82 includes the temperature sensor 1, a holding portion 92 that holds the temperature sensor 1, and a mounting portion 96 that attaches them to the exhaust duct 3. The temperature sensor 1 has a temperature sensing unit 10 near its tip. A signal from the temperature sensing unit 10 is transmitted by a transmission cable 83 connected to the signal wire 10a. The attachment portion 96 is attached by a fastener 96 a so as to abut on the outer wall surface 36 around the element opening 38 of the exhaust duct 3. An automatic fire extinguishing facility similar to the above configuration is disclosed in Patent Document 1.

  The temperature sensor assembly 84 is typically attached to the kitchen hood 4 from below as shown in FIG. The temperature sensor assembly 84 has a configuration similar to that of the temperature sensor assembly 82. In this case, generally, the mounting portion of the temperature sensor assembly 84 is mounted from the inner wall surface 44 of the kitchen hood 4, unlike the temperature sensor assembly 82.

JP-A-8-112369

  In the temperature sensor assembly 82 of the conventional automatic fire extinguishing equipment as described above, the exhaust duct 3 is attached above the ceiling plate 86, and the hood 4 is also arranged directly below the ceiling 60, so that the ceiling plate 86 is stretched. Installed before. That is, when the exhaust duct 3 is completed during the construction of the indoor facilities, the exhaust duct 3 is provided with an element opening 38 as shown in FIG. The temperature sensor assembly 82 is attached to the element opening 38 by passing the holding portion 92 therethrough, the attachment portion 96 is brought into contact with the outer wall surface 36 by the fastener 96 a, and the signal wire 10 a is connected to the transmission cable 83. . Thereafter, the ceiling board 86 is stretched and the kitchen hood 4 is constructed. The temperature sensor assembly 84 is attached to an element opening 48 formed in the wall 42 of the kitchen hood 4. If necessary, the ceiling plate 86 is also provided with an element opening 86a so as to align with the element opening 48, for example.

  When the temperature sensor assemblies 82 and 84 having such a configuration are used, for example, in order to perform maintenance work such as inspection and replacement of the temperature sensor, the inspector passes above the ceiling plate 86 through the inspection port 86b provided in the ceiling plate 86. When the kitchen hood 4 is embedded in the ceiling board 86, it is necessary to enter the back of the ceiling, which is the space above the kitchen hood 4.

  However, it is extremely heavy for an inspector to enter the back of the ceiling, move to a target location, and work there. As a result, for example, it may take more than one hour to perform maintenance work on the temperature sensor assembly of one exhaust duct. Since the maintenance work of the automatic fire extinguishing equipment needs to be completed at the time of a holiday together with the inspection of other inspection items, the periodic maintenance work of the fire extinguishing equipment with such a work load is not feasible. Particularly in large-scale kitchens and the like, many exhaust ducts are often used, and there is a strong demand for quick inspection work.

  Further, depending on the kitchen, even if an inspector tries to enter the back of the ceiling, the entrance to the back of the ceiling itself may not be performed. This is because cooking facilities are arranged near the inspection opening after completion of the indoor facilities. In such a case, maintenance of the automatic fire extinguishing device itself can be practically difficult.

  An object of the present invention is to solve at least some of the above-mentioned problems, and by providing a fixture for a sensing element used in an automatic fire extinguishing apparatus, a sensing element assembly, a sensing element construction method, and a maintenance method thereof, This greatly contributes to reducing the work load in the inspection work such as automatic fire extinguishing equipment.

  In the first embodiment of the present invention, a first surface that is in contact with the outer wall surface of the kitchen exhaust duct is provided, and the outer wall surface in the vicinity of the element opening provided in the wall of the exhaust duct is provided on the outer wall surface. An attachment portion adapted to be fixed, and when the first surface is brought into contact with the outer wall surface, the sensing portion of the sensing element is held so as to be located inside the element opening. A holding part that passes through the element opening when the attachment part is fixed to the outer wall surface, and the holding part is provided with the sensing element from the inner space of the exhaust duct. A fixture for the sensing element is provided that allows for the attachment and detachment of the sensor element.

  Further, in the second embodiment of the present invention, it has a first surface that comes into contact with the inner wall surface of the kitchen hood, and is fixed to the inner wall surface in the vicinity of the element opening provided in the wall of the kitchen hood. And a holding portion configured to hold the sensing element so that the sensing portion of the sensing element is located inside the kitchen hood when the first surface is brought into contact with the inner wall surface. And the holding part has a packing that keeps the periphery of the sensing element airtight and allows the sensing element to be attached to and detached from the inner space of the kitchen hood. Is done.

  In each aspect of the present invention, the exhaust duct to which the fixture is attached includes, for example, a duct made of stainless steel having a rectangular cross section. Typically, the exhaust duct includes a duct that is directly connected to the kitchen hood in order to exhaust heat exhaust and the like accompanying cooking from the kitchen hood to the outside. The exhaust duct includes, for example, a vertically oriented part and a horizontally oriented part, that is, a vertical exhaust duct and a horizontal exhaust duct.

  Moreover, in order to prevent the exhaust_gas | exhaustion of the range for gas cooking from spreading | diffusion in a room | chamber interior, the kitchen hood in each aspect of this invention may have a downward or front surface as a rectangular open surface above a cooking range. In addition, the kitchen hood may include a kitchen hood having an exhaust opening connected to an exhaust duct on the upper side or a back surface facing the cook. Further, the overall shape includes a rectangular parallelepiped, a cube, a quadrangular pyramid, a shape including a curved surface in part, and the like.

  In addition, a damper as shown in FIG. 13 or a grease filter may be arranged between the kitchen hood and the exhaust duct. Moreover, it can also be set as the exhaust duct which ventilates the exhaust_gas | exhaustion from other cooking facilities, such as a circulation oven, for example.

  In each aspect of the present invention, the attachment portion refers to any portion of the structure that forms the fixture and has a “first surface”, and is configured to be integrated with a member that is the fixture. It can also be configured to form a part of the fixture by combining with other members. The first surface in the mounting portion refers to a surface having an arbitrary shape, size, arrangement, number, and orientation. In other words, the shape of the attachment portion is arbitrary in each of the above aspects as long as it has the “first surface” as described above.

  Element openings are provided in the wall of the exhaust duct or the wall of the kitchen hood. This element opening is an arbitrary opening provided so as to pass between the inner space and the outer space of the exhaust duct or kitchen hood partitioned by the wall of the exhaust duct or kitchen hood. Say. This element opening is usually different from the opening of the exhaust duct for taking in the exhausted gas or the opening for collecting the exhaust of the kitchen hood, but these openings are continuous, for example exhausted Even if a part of the opening for taking in the gas becomes the element opening, it is included in the element opening as long as the above condition is satisfied.

  The first portion of the mounting portion is fixed to the outer wall surface of the exhaust duct or the inner wall surface in the vicinity of the element opening on the wall of the kitchen hood. Here, fixing so as to narrow the range of the opening of the element opening that leads to the inner space and the outer space is an aspect in which the attachment portion is fixed in the vicinity of the element opening. Further, the attachment portion may be formed to cover or close the element opening by itself or together with the holding portion. At this time, the mounting portion can block the element opening, cover the element opening, or be fixed over the periphery of the element opening, but is not necessarily limited thereto. For example, the attachment portion may be formed so as to provide a passage hole for allowing a cable or the like to pass through the inner space and the outer space, or may be fixed in a manner that does not ensure airtightness.

  Further, the first surface may be a single surface formed in any size, shape, or range that contacts the outer wall surface of the exhaust duct or the inner wall surface of the kitchen hood to attach the fixture. Including any surface that provides the ability to secure the entire fixture and the sensing element attached thereto to the exhaust duct or kitchen hood. For example, when the exhaust duct is a tubular tube having a rectangular cross section, or when the kitchen hood is formed of a planar plate material, a certain range of the planar outer surface can be the first surface. In addition to the configuration described above, the first surface can be combined with a plurality of planes in order to be attached to the corner portion of the exhaust duct or kitchen hood as described above. Also, the first surface can be curved to attach to the curved portion of the exhaust duct or kitchen hood. Furthermore, the first surface can be a part of the outer shape of the attachment portion in relation to the attachment portion.

  The holding unit refers to any one provided to hold the sensing element and allow the sensing element to be attached to and detached from the inner space of the exhaust duct or the kitchen hood. Here, the attachment / detachment refers to a state where the sensing element is fixed to the exhaust duct or the kitchen hood from the state where the sensing element is not fixed, and vice versa. Including the state of being fixed to the holding portion, there is no particular limitation other than that. Even when the sensing element is not fixed to the holding unit, the sensing element cannot always be removed from the holding unit immediately. For example, there may be a case where it is necessary to disconnect the signal wire that transmits the sensing signal from the transmission cable. Such a detachable holding part includes one that holds the sensing element using a cap nut that can be loosened or removed when the sensing element needs to be replaced in maintenance work of the automatic fire extinguishing device. .

  In a first embodiment of the above, the holding portion passes through the element opening when the mounting portion is fixed to the outer wall surface of the exhaust duct. For this reason, the holding part is formed in a shape that can pass through the element opening. Further, when the sensing element is attached to the holding part, the sensing part of the sensing element is arranged inside the element opening, that is, in a region serving as a fluid flow path in the exhaust duct. Therefore, in the first embodiment, it is possible to work from the outer space of the exhaust duct during construction for attaching the fixture. On the other hand, at the time of maintenance work in the first embodiment, the above-described sensing element is detached from the holding part by work from the inner space of the exhaust duct, in other words, work from the inside of the element opening. Is possible.

  In the second embodiment, the holding unit holds the sensing element so that the sensing unit of the sensing element is located inside the kitchen hood when the first surface is in contact with the inner wall surface. In this embodiment, since the first surface of the attachment portion abuts against the inner wall surface of the kitchen hood, it is not necessary for the holding portion to pass through the element opening as in the first embodiment. However, in this embodiment, the holding unit is disposed at a position that directly receives the oil smoke from the cooking range as compared to the kitchen hood. Therefore, the holding part of the present embodiment has a packing for realizing a stable sensing operation while keeping the periphery of the sensing element airtight, thereby supporting attachment / detachment of the sensing element from the inner space of the kitchen hood.

  In the above first and second embodiments of the present invention, several further preferred embodiments are provided. This aspect will also be described in detail in the embodiment section.

  In the present invention, there is provided a sensing element assembly including a fixture included in any of the embodiments and a sensing element that is detachably held by a holding portion of the fixture.

  Further, the present invention uses a fixture having any one of the above-described features even in the embodiment of the sensing element assembly in which the sensing element is pre-combined with the fixture. Therefore, it is worthy of note that maintenance work can be performed from the inside of the exhaust duct or kitchen hood.

  In addition, a construction method is also provided as an embodiment of the present invention. That is, the step of fixing the fixture of the sensing element to the wall surface of the exhaust duct for the kitchen, the holding portion of the fixture being passed through the element opening provided in the wall surface, and the first mounting portion of the fixture Fixing the fixture by bringing a surface into contact with the outer wall surface of the exhaust duct around the element opening; and a signal wire extending from the sensing element removable from the inner space of the exhaust duct. A method for constructing a sensing element, comprising: connecting to a transmission cable for transmitting a signal from the sensing part; and attaching the sensing element to the holding part so that the sensing part is located inside the exhaust duct. Is provided.

  In such an embodiment, the construction from the outer space of the exhaust duct is facilitated during construction, and the sensing element thus constructed can be easily maintained from the inner space of the exhaust duct. Become. Accordingly, the safety of work and the speed of work can be greatly accelerated. The order of the fixing and connecting steps is not limited.

  Further, in the present invention, the step of fixing the fixture of the sensing element to the wall surface of the exhaust duct for the kitchen, wherein the holding portion of the fixture is passed through the element opening provided on the wall surface, and the fixture is attached. Fixing the fixture by bringing the first surface of the part into contact with the outer wall surface of the exhaust duct around the element opening, wherein the holding part is a signal from the sensing part of the sensing element. It is equipped with a conductive holding part side terminal that can be connected to a transmission cable for transmitting information, and a sensing element can be attached and detached from the inner space of the exhaust duct and connected to a signal wire extending from the sensing element Fitting the sensing element to the holding portion so that the sensing portion is located inside the exhaust duct by fitting the element-side terminal being fitted to the holding portion-side terminal. Construction method is provided

  In such an embodiment, the construction from the outside space of the exhaust duct becomes easy at the time of construction, and the sensing element thus constructed is in accordance with the attachment and detachment of the sensing element from the inside space of the exhaust duct. Since the electrical connection is also established or disconnected, maintenance work can be easily performed from the inner space of the kitchen hood. Therefore, the work can be made safer and greatly accelerated.

  Further, as an embodiment of the present invention, a step of fixing the fixture of the sensing element to the wall surface of the kitchen hood, wherein the first surface of the mounting portion of the fixture is provided around the element opening provided on the wall surface. A step of abutting the inner wall surface of the kitchen hood to fix the fixture; and wherein the holding unit is configured to allow a sensing element to be attached and detached from an inner space of the kitchen hood, and a signal wire extending from the sensing element. Connecting to a transmission cable for transmitting a signal from the sensing unit of the sensing element, and the sensing through a packing that keeps the sensing element airtight so that the sensing unit is located inside the kitchen hood. There is provided a method of constructing a sensing element including attaching an element to the holding portion.

  In the sensing element constructed in such an embodiment, the sensing element can be easily attached and detached from the space inside the kitchen hood so that the kitchen hood can be easily maintained, and the oil in the kitchen hood affects the signal of the sensing element. Can be prevented. Therefore, the sensing operation can be stabilized, the work can be made safer, or the operation can be greatly accelerated.

  As an embodiment of the present invention, a step of fixing a fixture of a sensing element to a wall surface of a kitchen hood, the kitchen hood around an element opening provided with a first surface of a mounting portion of the fixture on the wall surface A step of abutting an inner wall surface to fix the fixture; and a holding portion of the fixture is connectable to a transmission cable for transmitting a signal from the sensing portion of the sensing element. An electroconductive holding part side terminal is provided, the sensing element is removable from the inner space of the kitchen hood, and the element side terminal connected to a signal wire extending from the sensing element is connected to the sensing element. The sensing unit is positioned inside the kitchen hood by fitting the conductive holding unit side terminal that is connectable with a transmission cable for transmitting a signal from the sensing unit. element Construction method of the sensing element and a step of mounting the sensing element through the packing to keep the surrounding airtight by the holding portion is provided.

  The sensing element constructed in such an embodiment can be easily maintained from the inner space of the kitchen hood because the electrical connection is established or disconnected accordingly when the sensing element is detached from the inner space of the kitchen hood. Therefore, the work can be made safer and greatly accelerated. In addition, by adopting such a sensing element, it is possible to prevent the oil in the kitchen hood from affecting the signal of the sensing element. In each of the above embodiments, the execution order of the steps is not limited to the order described.

  In the present invention, an embodiment of the maintenance method is also provided. That is, the sensor element mounted on the wall of the kitchen exhaust duct or the kitchen hood is removed from the holding portion of the fixture that can be attached to and detached from the inner space of the kitchen exhaust duct or the kitchen hood. A step of detaching the sensing element from the inner space while fixing a mounting portion for attaching the fixing tool to the wall surface to the wall surface, and removing the sensing element or another sensing element, A method for maintaining the sensing element is provided, including the step of attaching to the holding part from an inner space.

  In this embodiment, the sensing element can be inspected and replaced from the space inside the kitchen exhaust duct and the kitchen hood, so that the inspector does not need to enter the back of the ceiling, and the maintenance and inspection of the automatic fire extinguisher is performed. Becomes easier. Therefore, the work can be made safer and greatly accelerated.

  According to some embodiments of the present invention, it is possible to achieve both easy construction of the sensing element from the exhaust duct and the outer space and easy maintenance of the sensing element from the inner space of the exhaust duct. Therefore, the work can be made safer and greatly accelerated. Further, according to some embodiments, it is possible to achieve both easy maintenance of the sensing element from the inner space of the kitchen hood and stable use of the sensing element in the kitchen hood. Therefore, the work can be made safer and greatly accelerated.

It is a fragmentary sectional view which shows the attachment state of the fixing element for sensing elements of a certain form of this invention, and a sensing element. It is a disassembled perspective view which shows the usage condition at the time of construction of the fixing element for sensing elements of a form of this invention or a maintenance. It is a block diagram which shows the installation of the kitchen which uses the fixture for sensing elements of a certain form of this invention. It is a fragmentary sectional view which shows the attachment state of the fixing element for sensing elements of a certain form of this invention, and a sensing element. It is a perspective view of the sensing element used with the fixture for sensing elements of a certain form of this invention. It is a fragmentary sectional view which shows the attachment state of the fixing element for sensing elements of a certain form of this invention, and a sensing element. FIG. 3 is a perspective view showing a sensing element and a fixture in a use state during construction or maintenance in a fixture for a sensing element according to an embodiment of the present invention. FIG. 4 is a partial cross-sectional view showing a state in which a sensing element is attached in a sensing element fixture according to an embodiment of the present invention. FIG. 5 is a partial cross-sectional view showing a sensing element mounting state in a sensing element fixture according to an embodiment of the present invention. FIG. 5 is a partial cross-sectional view showing a sensing element mounting state in a sensing element fixture according to an embodiment of the present invention. FIG. 5 is a partial cross-sectional view showing a sensing element mounting state in a sensing element fixture according to an embodiment of the present invention. FIG. 5 is a partial cross-sectional view showing a sensing element mounting state in a sensing element fixture according to an embodiment of the present invention. It is a block diagram which shows the installation of the kitchen which uses the conventional fixture for sensing elements. It is a fragmentary sectional view which shows the attachment state of the conventional fixture for sensing elements, and a sensing element.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this description, common parts are denoted by common reference symbols throughout the drawings unless otherwise specified. In the drawings, the elements of the present embodiment are not necessarily shown to scale.

<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a partial cross-sectional view showing a mounting state of a sensing element fixture and a sensing element according to this embodiment, and FIG. 2 shows a usage pattern during construction or maintenance of the sensing element fixture of this embodiment. FIG. 3 is an exploded perspective view, and FIG. 3 is a configuration diagram showing the equipment of the kitchen using the sensing element fixture of the present embodiment.

  As shown in FIGS. 1 and 2, the temperature sensor assembly (sensing element assembly) 102 </ b> A of the present embodiment is fixed to the temperature sensor 1 </ b> A and the exhaust duct 3 in the same manner as the temperature sensor assembly 82 described above. It consists of ingredient 2A. The fixture 2 </ b> A includes a holding portion 24 </ b> A that holds the temperature sensor 1 </ b> A and an attachment portion 22 </ b> A that attaches itself to the exhaust duct 3. The temperature sensor 1A is typically a thermistor 12 built in a stainless steel sheath 14 and has a temperature sensing unit 10 near the tip. A signal from the temperature sensing unit 10 is transmitted by a transmission cable 164 such as an HP cable connected to the signal wire 10a. The signal wire 10a and the transmission cable 164 are connected by a closed end connector (connecting means) 168.

  The fixture 2A is attached to the exhaust duct 3 at the time of construction by the attachment portion 22A. At the time of attachment, the holding portion 24A is passed through the element opening 38, and the first surface 22a of the attachment portion 22A of the fixture 2A is brought into contact with the outer wall surface 36 of the exhaust duct 3 around the element opening 38. . Then, the attachment portion 22 </ b> A is attached from the outer space of the exhaust duct 3 by the fastener 23. The attachment portion 22A is attached from the second surface 22b by the fastener 23 so that the first surface 22a contacts the outer wall surface 36 around the element opening 38 of the exhaust duct 3. For this purpose, a fastener passage hole (not shown) passing between the first surface 22a and the second surface 22b is provided.

  As a procedure for this, there can be mainly two attachment procedures. One is to fix the fixture 2A to the outer wall surface 36 of the exhaust duct 3 and then attach the temperature sensor 1A to the holding portion 24A so that the temperature sensing unit 10 is positioned inside the exhaust duct 3. On the other hand, on the contrary, after the temperature sensor 1A is mounted on the holding part 24A, the fixture is attached to the outer wall surface 36 of the exhaust duct 3 so that the temperature sensing part 10 is located inside the exhaust duct 3. 2A is fixed.

  Next, a maintenance procedure will be described. When it is necessary to directly touch the temperature sensor assembly 102A or mechanically remove the temperature sensor 1A during the inspection of the automatic fire extinguishing device, first, the grease filter 66 and the damper 68 are removed as shown in FIG. Thus, when looking upward from the lower part of the kitchen hood 4, the temperature sensor assembly 102 </ b> A can be seen from the inner space of the exhaust duct 3, and reaches the temperature sensor assembly 102 </ b> A when the inspector reaches out. Become. Here, the ceiling plate 86 is described above the top plate of the hood 4, but the ceiling plate 86 is not necessarily arranged at such a position. As another example of the arrangement of the ceiling plate, for example, a gap can be provided between the top plate of the hood 4 and the ceiling plate 86. Further, the hood 4 may be embedded in the ceiling plate 86, and the top plate of the hood 4 may be disposed at a position higher than the ceiling plate 86. In FIG. 3, the temperature sensor assembly 102 </ b> A and the temperature sensor assemblies 102 </ b> B to 102 </ b> D of the embodiments described later are collectively described as the temperature sensor assembly 102.

  In the maintenance work, the function of the temperature sensor assembly 102A is normally inspected to check whether the controller of the automatic fire extinguisher can properly detect the temperature rise. At this time, the temperature sensor 1A may need to be replaced for reasons such as the need to remove dirt adhering to the temperature sensor assembly 102A. In the temperature sensor assembly 102A of the present embodiment, a structural device is applied to the holding portion 24A so that the temperature sensor 1A can be easily detached from the temperature sensor assembly 102A in such maintenance work and replacement work. .

  That is, in the present embodiment, the holding portion 24A of the fixture 2A uses the cap nut 28 so that the temperature sensor 1A can be attached and detached from the inner space of the exhaust duct 3. Referring to FIG. 2 for this specific configuration, the cap nut 28 is provided with a hole 28a through which the temperature sensor 10 of the temperature sensor 1A can pass. The female screw portion 28 b on the inner surface of the cap nut 28 is screwed with the male screw portion 260 a of the nut receiving portion 260. When attaching the temperature sensor 1 </ b> A, the temperature sensor 1 </ b> A is held by the cap nut 28 after passing through the packing 242. In FIG. 2, the flange portion 142 is used in the sheath 14 of the temperature sensor 1 </ b> A so that the shear stress when the cap nut 28 is screwed does not act on the packing 242, thereby further ensuring the airtightness by the packing 242. It is like that. However, the flange portion 142 is not necessarily used. The temperature sensor 1A can be configured to be detachable from the space inside the exhaust duct 3 by the holding portion 24A configured as described above.

  In the above maintenance work, for example, when the temperature sensor 1A needs to be replaced, the cap nut 28 is loosened and the temperature sensor 1A is mechanically removed. Then, the closed end connector 168 is released, and the signal wire 10a of the temperature sensor 1A is electrically removed from the transmission cable 164. In the reverse order, the prepared signal wire 10a of the temperature sensor 1A to be replaced is electrically connected to the transmission cable 164 by the new closed-end connector 168, and the temperature sensor 1A is held again by the cap nut 28. Attach to 24A. At this time, if necessary, additional maintenance such as replacement of the packing 242 is also performed. Finally, the normal operation after the replacement is confirmed and the process ends. The through hole 24a is sized to allow the closed end connector 168 to pass through so that such work can be performed. In this way, the inspector can perform maintenance work such as replacement of the temperature sensor 1A accompanying the check work of the automatic fire extinguishing apparatus without entering the ceiling.

<First Embodiment: Modification 1>
Next, a temperature sensor assembly 102B according to a modification of the first embodiment will be described. FIG. 4 is a partial cross-sectional view showing a mounting state of the temperature sensor fixture 2B and the temperature sensor 1B in the temperature sensor assembly 102B according to this modification, and FIG. 5 together with the temperature sensor assembly 102B according to this modification. It is a perspective view of the temperature sensor 1B used.

  Compared to the temperature sensor assembly 102A, the temperature sensor assembly 102B has no change in the mounting portion 22B, and the configurations of the holding portion 24B and the temperature sensor 1B are different. That is, the attachment portion 22 </ b> B is attached by the fastener 23 so that the first surface 22 a contacts the outer wall surface 36 of the wall 32 of the exhaust duct 3. The holding portion 24B extends to the inner space of the exhaust duct 3 through the element opening 38 of the exhaust duct 3, but unlike the temperature sensor assembly 102A, a cap nut is not used. Instead, in the temperature sensor assembly 102B, the element side terminal 18 is used for the temperature sensor 1B, the holding unit side terminal 246 is used for the holding unit 24B, and these terminals are fitted to each other so that the temperature sensor 1B is held by the holding unit 24B. To hold. Specifically, as shown in FIG. 4, the transmission cable 164 is connected to the signal wire 10 b by the closed end connector 168, and the signal wire 10 b is electrically connected to one end of the holding unit side terminal 246. The holding portion side terminal 246 is configured such that the other end portion has a bowl shape, and is fixed to the holding portion 24B through the through hole 24a. One end of the element side terminal 18 of the temperature sensor 1B has a hook shape so that the temperature sensor 1B can be supported by being fitted to the hook shape end of the holding portion side terminal 246. As shown in FIG. 5, the element-side terminal 18 has a hook-shaped end fitted to the holding-portion-side terminal 246 by rotating the temperature sensor 1B clockwise around the sheath 14 as an axis. It is comprised so that it can open | release from the holding | maintenance part side terminal 246 by turning clockwise. Both the element side terminal 18 and the holding part side terminal 246 are made of a conductive material having such a strength that the temperature sensor 1B can be mechanically held as well as electrical connection. The temperature sensor 1B element side terminal 18 is connected to a signal wire 10a from the temperature sensing unit 10 of the temperature sensor 1B.

  In the temperature sensor assembly 102B of the present modification example, the packing 242 is used similarly to the above-described temperature sensor assembly 102A, and the space between the temperature sensor 1B and the holding portion 24B is kept airtight in a fitted state. Yes. The flange portion 142 here is made of an insulating material so that the two element side terminals 18 do not short-circuit each other.

  In maintenance work of the temperature sensor assembly 102B of such a modification, for example, when the temperature sensor 1B needs to be replaced, the temperature sensor 1B can be released from the holding portion 24B by turning counterclockwise. When replacement is required, mechanical holding and electrical connection are completed at the same time by simply rotating the temperature sensor 1B having the same structure clockwise in accordance with the holding portion 24B. At the time of construction, the temperature sensor assembly 102B can be attached from the outer space of the exhaust duct 3 with the temperature sensor 1B attached, and the fixture 2B of the temperature sensor assembly 102B can be attached from the outer space of the exhaust duct 3. After the attachment, the temperature sensor 1B can be attached from the inner space of the exhaust duct 3.

<First Embodiment: Modification 2>
Next, as another modified example of the first embodiment, a temperature sensor assembly 102C will be described based on FIGS. The temperature sensor assembly 102C is different from the temperature sensor assembly 102A in the connection form of the attachment portion 22C and the signal wires 10a and 10b of the temperature sensor 1C. FIG. 6 is a partial cross-sectional view showing a state in which the temperature sensor 1C is attached to the fixture 2C in the temperature sensor assembly 102C. FIG. 7 shows the temperature sensor 1C and the temperature sensor 1C in construction or maintenance in the temperature sensor assembly 102C. It is a perspective view which shows the use condition of 2 C of fixing tools.

  In the temperature sensor assembly 102C of this modification, a cap nut is used similarly to the above-described temperature sensor assembly 102A, but a connector (connection means) 166 is connected in advance to the signal wire 10a from the temperature sensor 1C. This 166 is connected to the connector 166 of the signal wire 10b connected to the transmission cable 164 at the time of use, and is opened when necessary, such as at the time of replacement. In this way, reliable electrical connection and ease of replacement are compatible. The temperature sensor 1 </ b> C is different from the temperature sensor 1 </ b> A (FIGS. 1 and 2) in that the flange portion 142 is not used other than the connector 166 described above.

  The attachment portion 22C of the fixture 2C is attached by the fastener 23 so that the first surface 22a is brought into contact with the outer wall surface 36 of the wall 32 of the exhaust duct 3. A transmission cable passage hole 228 is provided in the attachment portion 22C, and a bush 229 is fitted therein. The signal wire 10 b passes through the bush 229 and extends to the outer space of the exhaust duct 3, where it is connected to the transmission cable 164 by a closed end connector 168. The transmission cable passage hole 228 passes through the accommodating portion 248 in which the connector 166 is accommodated and the outer space of the exhaust duct 3, and the size thereof prevents the connector 166 from passing therethrough. Thus, the connector 166 does not return from the housing portion 248 to the outer space of the exhaust duct 3 after the construction. In the illustrated example, the transmission cable passage hole 228 does not pass the connector (connecting means) 166, but as a further modification, a closed end connector 168 is also provided in the housing portion 248 in addition to the connector 166. It is arranged so that the transmission cable 164 passes through the transmission cable passage hole 228, or, as another further modification, the closed end connector 168 is used without using the connector 166, and the closed end connector is used. 168 may be disposed in the accommodating portion 248 so that the transmission cable 164 passes through the transmission cable passage hole 228.

  The holding portion 24 </ b> C of the fixture 2 </ b> C extends into the inner space of the exhaust duct 3 through the element opening 38 of the exhaust duct 3. The structure thereof is substantially the same as that of the holding portion 24A (FIG. 1) of the temperature sensor assembly 102A, but the connector 166 is allowed to pass through the through hole 24a. As a result, as shown in FIG. 7, the connector 166 can be pulled out of the through hole 24a and connected and opened. In the figure, the cap nut 28 and the packing 242 are not shown.

  In the above modification, for example, when the temperature sensor 1C needs to be replaced as a maintenance operation of the temperature sensor assembly 102C, the cap nut 28 is loosened and the temperature sensor 1C is mechanically removed. Then, the connection of the connector 166 is released, and the signal wire 10a of the temperature sensor 1C is electrically disconnected from the transmission cable 164. In the reverse order, the signal wire 10a of the replacement temperature sensor 1C, which is similarly provided with the connector 166, is electrically connected to the connector 166 on the new transmission cable 164 side, and again by the cap nut 28. The temperature sensor 1C is attached to the holding part 24C. At the time of construction, the temperature sensor assembly 102B can be attached from the outer space of the exhaust duct 3 with the temperature sensor 1C attached, and the fixture 2C of the temperature sensor assembly 102C is attached to the outer space of the exhaust duct 3. It is also possible to attach the temperature sensor 1C from the inner space of the exhaust duct 3 after being attached.

  As described above, in the temperature sensor assembly 102C according to the present modification, the temperature sensor 1C can be easily electrically disconnected or connected, so that even if work such as replacement of the temperature sensor is necessary, the signal There is an advantage that the work load is reduced as compared with the work for the wires of the wire and the transmission cable.

<First Embodiment: Modification 3>
Next, as still another modification of the first embodiment, a temperature sensor assembly 102D will be described with reference to FIG. The temperature sensor assembly 102D is different from the temperature sensor assembly 102A in the configuration of the mounting portion 22D in the fixture, the configuration of the holding portion 24D, and the connection form of the signal wire of the temperature sensor. FIG. 8 is a partial cross-sectional view showing a state in which the temperature sensor 1D is attached to the fixture 2D in the temperature sensor assembly 102D.

  In the temperature sensor assembly 102D of this modification, a cap nut is used in the same manner as the temperature sensor assembly 102A. Similarly to the temperature sensor assembly 102C (FIGS. 6 and 7), a connector (connecting means) 166 is connected in advance to the signal wire 10a from the temperature sensor 1D. The connector 166 is attached / detached to / from the connector 166 of the signal wire 10b as necessary, so that both reliable electrical attachment / detachment and ease of replacement can be achieved. The temperature sensor 1D includes a flange portion 142 similar to the temperature sensor 1A (FIGS. 1 and 2). For this reason, the shear stress when screwing the cap nut 28 does not act on the packing 242.

  The attachment portion 22D of the fixture 2D is attached to the wall 32 of the exhaust duct 3 by the fastener 23 so that the first surface 22a of the wing provided around the attachment portion 22D is brought into contact with the outer wall surface 36. Yes. The mounting portion 22D is provided with a housing portion 222 on the side opposite to the first surface 22a. The housing portion 222 is provided with a construction opening 222 a, and the construction opening 222 a is covered with a closing member 224.

  As shown in FIG. 8, a connector 166 and a closed end connector 168 are accommodated in the accommodating portion 222, and 10 b connected to the signal wire 10 a is connected to the transmission cable 164 there. The accommodating portion 222 is provided with a conduit opening 222b. A conduit 226 such as a CD tube is used for the conduit opening 222b so that the transmission cable 164 can be easily fed from a control unit (not shown) when the transmission cable 164 needs to be replaced. In addition, the container 222 can be a container used for electrical work as a pull box or a connection box, for example, and the material thereof is arbitrary. From the viewpoint of being a part of the fire extinguishing equipment, one having a certain degree of heat resistance is preferable.

  In the above-described modification, the construction work before the ceiling plate 86 is attached can be easily performed because the connection box is used, and during maintenance, the cap nut 28 of the holding portion 24D is used. The temperature sensor 1D can be easily replaced.

  In FIG. 8, the holding portion 24 </ b> D is attached to a portion that becomes the first surface 22 a of the attachment portion 22 </ b> D having the accommodating portion 222. Thus, the holding part 24D can be configured as a member different from the attachment part 22D. In this case, for example, a fixture 102D having the pull box itself as an attachment portion is configured by using a conventionally used pull box as the accommodating portion 222 and fitting the holding portion 24D into a hole provided in the pull box. Can do. As another example, the holding portion 24D can be integrally manufactured by the same member as the attachment portion 22D (not shown).

  Further, since the connector 166 is used in the present modification, the same advantages as the temperature sensor assembly 102C (FIGS. 6 and 7) are obtained. However, in the present modification, the connector 166 is not used and the temperature sensor assembly 102A (FIG. 2), the signal wire 10a can be further modified to be connected to the transmission cable 164 using only the closed-end connector 168.

<Second Embodiment>
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 9 is a partial cross-sectional view showing a mounting state of the sensing element in the sensing element fixture according to the second embodiment of the present invention.

  The present invention can be implemented as a temperature sensor assembly (sensing element assembly) provided in the kitchen hood 4 in addition to the embodiment of the temperature sensor assemblies (sensing element assemblies) 102A to 102D provided in the exhaust duct 3. The temperature sensor assembly 104E is attached from the lower side of the kitchen hood 4 as shown in FIG. 9 in order to monitor a flame that ignites, for example, the oil receiver 4a (FIG. 3) of the kitchen hood 4 in the inner space of the kitchen hood 4. It is done. FIG. 3 also shows this state. In FIG. 3, the temperature sensor assembly 104E and the temperature sensor assemblies 104F to 104H described later are collectively shown as the temperature sensor assembly 104.

  At the time of construction, an element opening 48 is opened in the wall 42 of the kitchen hood 4. The temperature sensor assembly 104E is attached to the inner wall surface 44 of the kitchen hood 4 so as to face it. The transmission cable 164 enters the back of the ceiling through the element opening 60a (FIG. 3) of the ceiling board 86 and is connected to a control unit (not shown).

  Similar to the temperature sensor assemblies 102A to 102D described above, the temperature sensor assembly 104E includes a temperature sensor 1E and a fixture 2E. The temperature sensor 1E is the same as the temperature sensor 1A described above. Here, the fixture 2E is the same as the temperature sensor assembly 102A shown in FIG. 1, but the mounting portion 22E forming the fixture 2E holds the first surface 22a that abuts against the kitchen hood 4. It is on the side opposite to the portion 2E, that is, on the upper side of the figure. As described above, in FIG. 3, the ceiling plate 86 extends also above the kitchen hood 4, but this embodiment can also be used for a kitchen hood that is not configured as described above. The kitchen hood 4 may be embedded in the ceiling board, and the ceiling board 86 may be installed only where the kitchen hood 4 is not present. In this case, the transmission cable 164 is connected to a control unit (not shown) through the ceiling behind the kitchen hood 4 and the ceiling behind the ceiling plate other than the kitchen hood 4.

  The holding portion 24E constituting the fixture 2E holds the temperature sensor 1E by the cap nut 28, similarly to the temperature sensor assembly 102A. Since the details of the holding portion 24E are the same as those of the holding portion 24A, the illustration and description thereof are omitted.

  The temperature sensor assembly 104E has two mounting procedures similar to those in the case of the temperature sensor assembly 102A, that is, the fixing device 2E is first fixed to the inner wall surface 44 of the kitchen hood 4 and then the temperature sensing is performed. The temperature sensor 1E is attached to the holding portion 24E so that the portion 10 is inside the exhaust duct 3, and conversely, the temperature sensor 1E is attached to the holding portion 24E and then the fixture 2E is attached to the inner wall surface 44. It can also be fixed to. In any procedure, the first surface 22a of the mounting portion 22E of the fixture 2E is brought into contact with the inner wall surface 44 around the element opening 48, and the fixture 2E is fixed.

  In the maintenance work, since the temperature sensor assembly 104E can be seen when looking upward from the lower part of the kitchen hood 4, the inspector extends the hand and loosens the cap nut 28 of the holding portion 24E of the temperature sensor assembly 104E, thereby the temperature sensor 1E. Can be easily removed. That is, when the cap nut 28 is loosened and the temperature sensor 1E is removed and pulled, the closed end connector 168 and the transmission cable 164 can be pulled out from the through hole 24a (not shown) as described in FIG. Regarding the attachment, a temperature sensor may be arranged and the cap nut 28 may be similarly extended by reaching out. Thus, according to the present embodiment, the temperature sensor assembly 104E that can be easily maintained can be provided.

<Second Embodiment: Modification 1>
Next, a modification of the second embodiment of the present invention will be described with reference to FIG. FIG. 10 is a partial cross-sectional view showing a sensing element attached state in a sensing element fixture according to a modification of the second embodiment of the present invention.

  The temperature sensor assembly provided in the kitchen hood 4 of the present embodiment is different from the above-described temperature sensor assembly 104E (FIG. 9) according to the aspect of the temperature sensor assembly 104F using a housing similar to the temperature sensor assembly 102D (FIG. 8). It can also be implemented. In this case, as shown in FIG. 10, the attachment portion 22F of the fixture 2F is moved by the fastener 23 so that the first surface 22a of the wing provided around the attachment portion 22F is brought into contact with the inner wall surface 44. It is attached to the wall 42 of the kitchen hood 4. Moreover, the accommodating part 222 becomes a part of attachment part 22F. And the holding | maintenance part 24F is attached to the closing member 224 which plugs up the construction opening part 222a of the accommodating part 222. FIG. Details of the holding unit 24F are the same as those of the holding unit 24D (FIG. 8), and thus the illustration and description thereof are omitted. Further, the temperature sensor 1F is connected to the transmission cable 164 using a connector 166.

  With this configuration, in the temperature sensor assembly provided in the kitchen hood 4, the installation in the housing portion 222 is facilitated, and the temperature sensor 1 </ b> F can be easily replaced using the cap nut 28, so that maintenance work is performed. Will also be easier. The temperature sensor assembly 104F can be further modified such that the closing member 224 and the holding portion 24F are integrated. Further, the wiring route of the transmission cable 164 can be configured by a configuration using a conduit as described with reference to FIG.

<Second Embodiment: Modification 2>
Next, two further modifications of the second embodiment of the present invention will be described with reference to FIGS. FIG. 11 is a partial cross-sectional view showing an attachment state of a sensing element in one sensing element fixture according to a modification of the second embodiment of the present invention. FIG. 12 is a partial cross-sectional view showing how the sensing element is attached in another sensing element fixture according to a modification of the second embodiment of the present invention.

  Each of the temperature sensor assemblies 104G and 104H shown in FIGS. 11 and 12 uses the accommodating portion 222 similar to the temperature sensor assembly 104F described above. In other words, the temperature sensor assemblies 104G and 104H include attachment portions 22G and 22H and holding portions 24G and 24H, respectively, and the attachment portions 22G and 22H are provided with an accommodating portion 222. The housing portion 222 is disposed so as to protrude toward the outer wall surface 46 (upward in the drawing) through the element opening 48 provided in the top plate of the kitchen hood 4. The first surfaces 22a of the attachment portions 22G and 22H are brought into contact with the inner wall surface 44 of the kitchen hood 4 around the element opening 48 and attached by the fasteners 23. Thus, the accommodating part 222 becomes a part of attachment part 22G, 22H, and is attached to the kitchen hood 4. FIG. Then, the construction opening 222 a of the housing portion 222 is closed by the closing member 224. Since the details of the holding portions 24G and 24H are the same as those of the holding portion 24D (FIG. 8), description and explanation of the drawings are omitted.

  In the temperature sensor assemblies 104 </ b> G and 104 </ b> H shown in FIGS. 11 and 12, the temperature sensors 1 </ b> G and 1 </ b> H are connected to the transmission cable 164 using a connector 166. The transmission cable 164 transmits signals from the temperature sensors 1G and 1H through the conduit 226 to a control unit (not shown). Here, in the temperature sensor 1G used for the temperature sensor assembly 104G of FIG. 11, the closed end connector 168 is further used up to the transmission cable 164, while the temperature sensor 1H used for the temperature sensor assembly 104H of FIG. Then, the terminal block 170 is further used up to the transmission cable 164. This terminal block 170 is used for electrical connection between the signal wire 10 b from the connector 166 and the transmission cable 164 inside the accommodating portion 222.

  With this configuration, in the temperature sensor assembly provided in the kitchen hood 4, the installation in the housing portion 222 is facilitated, and the temperature sensors 1 </ b> G and 1 </ b> H can be easily replaced using the cap nut 28. Maintenance work is also facilitated. That is, also in the temperature sensor assemblies 104G and 104H of these modified examples, as shown in FIG. 7, the connector 166 is pulled out together with the signal wire 10a into the inner space of the kitchen hood 4, and maintenance such as replacement of the temperature sensors 1G and 1H is performed. Work can be done.

<Further modifications>
In addition to the above-described embodiment and its modifications, the present invention can be implemented by further modifications.

  For example, in addition to the configuration using the cap nut as shown in FIG. 1 or the like, the fixture may be configured so that it can be easily removed using a tool. Moreover, it replaces with a cap nut and has a female screw part for screwing with the male screw part 260a, and shall be a member provided with a protective bumper that can protect the temperature sensing part of the temperature sensor. You can also.

  About the structure of a holding | maintenance part, various structures which hold | maintain temperature sensor 1D can be made. For example, in place of the fixtures 2E to 2H of the temperature sensor assemblies 104E to 104H described with reference to FIGS. 9 to 12, the element side terminal and the holding unit side terminal are fitted and fixed without using a cap nut. The temperature sensor (sensing element) and the holding unit in the mode described with reference to FIGS. 4 and 5 can be used.

  With respect to the configuration of the attachment portion, the above-described embodiments and modifications have all been described using the fastener 23, but various types of fasteners can be used. In addition, if there is a second surface parallel to the first surface in the mounting portion, the mounting by the fastener is easy, and such a configuration of the mounting portion is preferable. The transmission cable passage hole 228 has been described in the above description so that the connector 166 does not return from the housing portion 248 to the outer space of the exhaust duct 3 after construction only in the case related to FIG. A similar transmission cable passage hole can also be used in the case of using a separate accommodating portion.

  As the sensing element, in each of the above-described examples, the temperature sensor is described. However, the sensing element used in the present invention is not limited to a sensor that senses temperature. For example, an infrared sensor that detects infrared rays emitted from a flame or a gas sensor that measures the gas concentration of a specific component such as carbon monoxide or fuel gas can be used. In addition, the structure of the sensing element can be various configurations such as a structure using a sheath in addition to the presence or absence of the flange portion. For example, in a temperature sensor that is held by being fitted to the holding portion shown in FIGS. 4 and 5, in addition to the case where the packing is exposed from the side as shown in FIG. 4, the peripheral portion of the flange portion However, it can also take the structure extended so that the periphery of the side part of this packing might be covered.

  Furthermore, in the above-described embodiments, specific materials are described for some members for illustration, but the materials of the members for implementing the present invention are not limited to these. Each member can be selected from various viewpoints from the viewpoint that the operation of the sensing element can be appropriately performed, or that the sensing element conforms to various laws and regulations. As mentioned above, the modification which exists in the scope of the present invention including other combinations of each embodiment is also contained in a claim.

  The present invention can be applied as part of various facilities that use sensing elements in a kitchen.

102A to 102D, 104E to 104H Temperature sensor assembly (sensing element assembly)
1,1A-1H Temperature sensor (Sensing element)
10 Temperature sensor (sensor)
10a, b Signal wire 12 Thermistor 14 Sheath 142 Flange 164 Transmission cable 166 Connector (connecting means)
168 Closed end connector (connecting means)
170 Terminal block (connection means)
18 Element side terminal 2A-2H Fixing tool 22A-22H Mounting part 22a First surface 22b Second surface 222,248 Housing part 222a Construction opening 222b Conduit opening 224 Closing member 226 Conduit 228 Transmission cable passage hole 229 Bush 23 Fastener 24A-24H Holding part 242 Packing 24a Through hole 246 Holding part side terminal 260 Nut receiving part 260a Male thread part 28 Cap nut 3 Exhaust duct 32, 42 Wall 34, 44 Inner wall 36, 46 Outer wall 38, 48 Element opening 4 Kitchen hood 4a Oil receiver 62 Cooking table 64 Range 66 Grease filter 66a Oil receiver 68 Damper 72, 74 Nozzle 72a, 74a Piping 86 Ceiling plate 86a Element opening 86b Inspection port

Claims (16)

A mounting portion having a first surface that is in contact with the outer wall surface of the exhaust duct for the kitchen, and being fixed to the outer wall surface in the vicinity of the element opening provided in the wall of the exhaust duct; ,
When the attachment portion is fixed to the outer wall surface, the sensing portion of the sensing element is located inside the element opening portion when passing through the element opening portion and the first surface is brought into contact with the outer wall surface. A holding part adapted to hold the sensing element, and the holding part is capable of detaching the sensing element from an inner space of the exhaust duct.
Sensing element fixture. A first surface abutted against the inner wall surface of the kitchen hood, and an attachment portion formed to be fixed to the inner wall surface in the vicinity of an element opening provided in the wall of the kitchen hood;
A holding part configured to hold the sensing element so that the sensing part of the sensing element is located inside the kitchen hood when the first surface is brought into contact with the inner wall surface, Has a packing that keeps the periphery of the sensing element airtight,
The sensing element can be attached and detached from the inner space of the kitchen hood.
Sensing element fixture. The holding part is
The through-hole through which at least a part of the sensing element passes and connection means for connecting the signal wire and the transmission cable when the sensing element is removed from the holding portion is pulled out together with the sensing element. The fixture of the sensing element of Claim 1 or Claim 2. The holding part is
The sensing element is fitted to an element side terminal connected to a signal wire of the sensing element, and is connected to a transmission cable for transmitting a signal from the sensing unit of the sensing element. It has a conductive holding part side terminal,
The holding side terminal is fitted to the element side terminal to hold the sensing element.
The fixture of the sensing element according to claim 1 or 2. The mounting portion has a transmission cable passage hole through which a transmission cable for transmitting a signal from the sensing portion of the sensing element passes.
The transmission cable passage hole is configured not to pass connection means for connecting the signal wire and a transmission cable for transmitting a signal from the sensing portion of the sensing element,
The holding part has an accommodating part for the connecting means.
The fixture of the sensing element according to claim 1 or 2. The mounting portion has a receiving portion for receiving a connecting means for connecting a signal wire extending from the sensing element and a transmission cable for transmitting a signal from the sensing portion of the sensing element,
The accommodating portion includes a conduit opening configured to connect to the conduit, and a construction opening provided on any surface different from the first surface,
The construction opening is covered by a closing member;
The fixture of the sensing element according to claim 1 or 2. The holding part has a packing that keeps the periphery of the sensing part of the sensing element airtight,
The sensing element fixture according to claim 1. The holding part is
A cap nut having a hole for penetrating the sensing element;
A nut receiving portion having a male screw portion for screwing with the female screw portion of the cap nut,
The cap nut can be attached to and detached from the nut receiving portion inside the exhaust duct.
The fixture for a sensing element according to claim 3 or 5. The holding part is
Receiving a flange provided in the sensing element;
The flange can be urged by the cap nut to hold the sensing element.
The fixture of the sensing element according to claim 1 or 2. A fixture according to any one of claims 1 to 9,
A sensing element assembly, comprising: a sensing element that is detachably held by a holding portion of the fixture. A fixture according to claim 9;
A sensing element assembly comprising: a sensing element that is detachably held by a holding part of the fixture and has a flange part. A step of fixing a fixture of a sensing element to a wall surface of an exhaust duct for a kitchen, wherein a holding portion of the fixture is passed through an element opening provided in the wall surface, and a first surface of an attachment portion of the fixture is passed through Abutting an outer surface of the exhaust duct around the element opening and fixing the fixture;
Connecting a signal wire extending from the sensing element detachable from the inner space of the exhaust duct to a transmission cable for transmitting a signal from the sensing part of the sensing element;
Mounting the sensing element on the holding part so that the sensing part is located inside the exhaust duct. A step of fixing a fixture of a sensing element to a wall surface of an exhaust duct for a kitchen, wherein a holding portion of the fixture is passed through an element opening provided in the wall surface, and a first surface of an attachment portion of the fixture is passed through Fixing the fixture by abutting against an outer surface of the exhaust duct around the element opening, wherein the holding unit is a transmission cable for transmitting a signal from the sensing unit of the sensing element; It has a conductive holding part side terminal that can be connected, and the sensing element can be attached and detached from the inner space of the exhaust duct,
The element side terminal connected to the signal wire extending from the sensing element is fitted to the holding part side terminal, and the sensing element is attached to the holding part so that the sensing part is located inside the exhaust duct. A method for constructing the sensing element. A step of fixing a fixture of the sensing element to the wall surface of the kitchen hood, wherein the first surface of the mounting portion of the fixture is brought into contact with the inner wall surface of the kitchen hood around the element opening provided on the wall surface; A step of fixing a fixing tool, wherein the holding unit is detachable from the inner space of the kitchen hood,
Connecting a signal wire extending from the sensing element to a transmission cable for transmitting a signal from the sensing portion of the sensing element;
Attaching the sensing element to the holding part through a packing that keeps the periphery of the sensing element airtight so that the sensing part is located inside the kitchen hood. A step of fixing a fixture of the sensing element to the wall surface of the kitchen hood, wherein the first surface of the mounting portion of the fixture is brought into contact with the inner wall surface of the kitchen hood around the element opening provided on the wall surface; A step of fixing the fixing device, wherein the holding portion of the fixing device includes a conductive holding portion side terminal that is connectable to a transmission cable for transmitting a signal from the sensing portion of the sensing element. Provided, the sensing element is removable from the inner space of the kitchen hood,
The element side terminal connected to the signal wire extending from the sensing element is fitted to the conductive holding side terminal that can be connected to a transmission cable for transmitting a signal from the sensing part of the sensing element. Mounting the sensing element on the holding part through a packing that keeps the periphery of the sensing element airtight so that the sensing part is located inside the kitchen hood. A step of removing a mounted sensing element from a holding part of a fixture fixed to a wall of a kitchen exhaust duct or a kitchen hood and capable of detaching the sensing element from an inner space of the kitchen exhaust duct or the kitchen hood; A step of removing the sensing element from the inner space while fixing an attachment portion for attaching the fixture to the wall surface to the wall surface;
Attaching the removed sensing element or another sensing element from the inner space to the holding part. A maintenance method of the sensing element.

Images