JP7227716B2 - fire detection device - Google Patents

Description

The present invention relates to fire detection devices.

Conventionally, techniques capable of detecting heat and carbon monoxide have been proposed for sensors that detect fires in monitored areas. In this technology, a carbon monoxide detection unit housed in a housing, a detection space located inside the housing (hereinafter referred to as a "first detection space") detects carbon monoxide. a carbon detection unit, and a heat detection unit that is housed in a housing and that detects heat in a detection space (hereinafter referred to as a “second detection space”) located outside the housing. A sensor equipped with is configured. Further, the housing is provided with an inflow port through which a gas containing carbon monoxide flows into the first detection space, and an insertion hole through which a part of the heat detection unit is inserted into the second detection space. (See Patent Document 1, for example).

JP 2014-199632 A

However, in the conventional technology described above, as described above, the housing is provided with the inlet and the insertion hole. When the gas containing the first detection target such as carbon monoxide flows into the second detection space through the insertion hole, the outflowing gas makes it difficult to accurately detect the second detection target such as heat. Therefore, there is room for improvement from the viewpoint of maintaining the detection accuracy of the second detection target.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire detection apparatus capable of maintaining or improving the detection accuracy of an object to be detected.

In order to solve the above-described problems and achieve the object, the fire detection device according to claim 1 is a fire detection device for detecting fire in a monitoring area, comprising: a housing; , a first detection space for detecting a first detection target contained in gas that has flowed in from the outside of the housing, and a second detection space located inside or outside the housing, wherein the second A second detection space for detecting a detection target, and a partition wall provided in the housing, wherein the gas that has flowed into the first detection space can be prevented from flowing out to the second detection space. and a partition wall for partitioning the first detection space or the second detection space so that and an inflow space for allowing the gas containing the first detection target to flow into the first detection space main body, and an insertion hole provided in a portion of the housing facing the inflow space. a part of second detection object detection means for detecting the second detection object, which is accommodated in the housing, is inserted into the second detection space; A hole is further provided, and the partition wall is configured to surround at least a part of the insertion hole and the second detection object detection means in the inflow space.

The fire detection device according to claim 2 is a fire detection device for detecting a fire in a monitoring area, and is contained in a housing and a gas that has flowed into the interior of the housing from the outside of the housing. A first detection space for detecting a first detection target, and a second detection space located inside or outside the housing for detecting a second detection target; A partition wall provided in the housing, the first detection space or the second detection space so as to be able to suppress the gas flowing into the first detection space from flowing out to the second detection space a partition wall for partitioning a detection space; an inflow hole provided in the housing for allowing the gas containing the first detection target to flow into the first detection space; and the first detection. first detection object detection means for detecting an object, the first detection object detection means being housed in the first detection space, wherein the partition wall is positioned in the first detection space by the inflow hole; and surrounding at least a part of the circumference of the first detection object detection means.

According to the fire detection device of claim 1, in the interior of the housing, the first detection space for detecting the first detection target contained in the gas that has flowed in from the outside of the housing, and the exterior of the housing A second detection space located in the second detection space for detecting a second detection target, and a partition wall provided in the housing, wherein the gas flowing into the first detection space is a second and a partition wall for partitioning the first detection space or the second detection space so as to be able to suppress the gas flowing into the detection space. Outflow can be suppressed. Therefore, compared to the case where no partition wall is provided, it is possible to prevent the detection of the second detection target by the detection means from being hindered by the inflowing gas, and it is possible to maintain or improve the detection accuracy of the second detection target. becomes.
Further, an insertion hole is provided in a portion of the housing that faces the inflow space, and is provided with an insertion hole for inserting a part of the second detection object detection means into the second detection space. Since the inflow space surrounds at least a part of the insertion hole and the second detection object detection means, the gas flowing into the inflow space flows out to the second detection space through the insertion hole. can be effectively suppressed, and the detection accuracy of the second detection target can be easily maintained.

According to the fire detection device of claim 2, in the interior of the housing, the first detection space for detecting the first detection target contained in the gas that has flowed in from the outside of the housing, and the exterior of the housing A second detection space located in the second detection space for detecting a second detection target, and a partition wall provided in the housing, wherein the gas flowing into the first detection space is a second and a partition wall for partitioning the first detection space or the second detection space so as to be able to suppress the gas flowing into the detection space. Outflow can be suppressed. Therefore, compared to the case where no partition wall is provided, it is possible to prevent the detection of the second detection target by the detection means from being hindered by the inflowing gas, and it is possible to maintain or improve the detection accuracy of the second detection target. becomes.
Further, the housing includes an inflow hole provided in the housing and a first detection object detection means for detecting the first detection object, and the partition wall is positioned between the inflow hole and the first detection object detection means in the first detection space. Since it is configured to surround at least a part of the surroundings, it is possible to effectively suppress the gas that has flowed into the first detection space through the inflow hole from flowing out to the second detection space, thereby detecting the second detection target. Easier to maintain accuracy.

It is a side view which shows the attachment condition of the fire detection apparatus which concerns on embodiment. It is a figure which shows the fire detection apparatus of the state which removed the mounting base, (a) is a top view, (b) is a bottom view. FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2(b); It is a figure which shows an inner cover, (a) is a top view, (b) is a bottom view.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a fire detection device according to the present invention will be described in detail below with reference to the drawings. First, [I] the basic concept of the embodiment will be described, then [II] the specific contents of the embodiment will be described, and finally [III] modifications of the embodiment will be described. However, the present invention is not limited by the embodiment.

[I] Basic concept of the embodiment First, the basic concept of the embodiment will be described. Embodiments generally relate to a fire detection apparatus for detecting fire in a monitored area.

Here, the "fire detection device" is a device that detects and notifies a fire in a monitoring area based on the detection results of a plurality of detection targets. Concepts include detectors and fire alarms, thermal and optical fire detectors and alarms, or thermal, electrical and optical fire detectors and alarms. A "monitored area" is an area to be monitored, and is a concept including, for example, an area inside a building, an area outside the building, and the like. In addition, although the specific structure and type of "building" is arbitrary, for example, the concept includes detached houses, collective housing such as apartments and condominiums, office buildings, event facilities, commercial facilities, public facilities, etc. is. In addition, "notify" is a concept including, for example, outputting predetermined information to an external device, displaying or outputting predetermined information via output means (display means or audio output means), etc. be. In the following embodiments, the "fire detection device" is a thermal, electrical, and optical fire detector, and the "monitoring area" is an "internal area of an office building." explain.

[II] Specific contents of the embodiment Next, specific contents of the embodiment will be described.

(composition)
First, the configuration of the fire detection device according to the embodiment will be described. FIG. 1 is a side view showing how the fire detection device according to the embodiment is mounted. 2A and 2B are diagrams showing the fire detection device from which a mounting base, which will be described later, is removed, where (a) is a plan view and (b) is a bottom view. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2(b). FIG. 4 shows the inner cover 30, where (a) is a plan view and (b) is a bottom view. In the following description, the X direction in FIG. 1 is the horizontal direction of the fire detection device (+X direction is the left direction of the fire detection device, -X direction is the right direction of the fire detection device), and the Y direction in FIG. 2 is the fire detection device. The front and back direction (+Y direction is the front direction of the fire detection device, -Y direction is the rear direction of the fire detection device), the Z direction in FIG. The direction is referred to as the downward direction of the fire detector).

As shown in FIG. 1, the fire detection device 1 is installed indoors in a building on an installation surface 2 under the ceiling of the building. 20, an inner cover 30, an inflow space 40, an insect screen 50, a carbon monoxide detection space 61, a heat detection space 62, a smoke detection space 63, a detection part cover 70, a detection part body 80, a terminal board 90, and a substrate 100. ing. A space composed of the "inflow space 40", the "carbon monoxide detection space 61", and the "smoke detection space 63" corresponds to the "first detection space" in the claims.

(Configuration - Mounting base)
Returning to FIG. 1 , the mounting base 10 is mounting means for mounting the outer cover 20 on the installation surface 2 . The mounting base 10 is configured using, for example, a known mounting base for a fire detection device (for example, a substantially plate-shaped mounting base made of resin) or the like, and as shown in FIG. It is fixed with a fixture or the like.

(Configuration - outer cover)
The outer cover 20 is a cover that covers the inner cover 30, the inflow space 40, the insect screen 50, the carbon monoxide detection space 61, the smoke detection space 63, the detection unit cover 70, the detection unit body 80, the terminal board 90, and the substrate 100. be. The outer cover 20 is made of, for example, a light-shielding resin material. As shown in FIGS. 24.

Out of these, the outer cover main body 21 is the basic structure of the outer cover 20 . The outer cover main body 21 is formed of, for example, a substantially hollow columnar body whose upper and lower surfaces are open, and as shown in FIG. and fixed to the mounting base 10 by a fitting structure (or fixture) or the like.

Also, the top surface portion 22 is a partitioning means for partitioning the inflow space 40 . The top surface portion 22 is formed of, for example, a substantially circular plate-like body, and is provided substantially horizontally below the outer cover main body 21 as shown in FIGS. 1 to 3 .

Further, the first rib portion 23 is partitioning means for partitioning the inflow space 40 . The first rib portion 23 is formed of a substantially plate-like body and provided vertically between the outer cover main body 21 and the top surface portion 22. Specifically, as shown in FIGS. , a plurality of them are provided radially from the vicinity of the center of the outer cover 20 and are connected to the outer cover main body 21 and the top surface portion 22 .

Further, the second rib portion 24 is partitioning means for partitioning the inflow space 40 . The second rib portion 24 is formed of a substantially plate-like body, and is provided vertically between the outer cover main body 21 and the top surface portion 22. Specifically, as shown in FIGS. In addition, it is provided between the inner ends of adjacent first rib portions 23 and connected to the outer cover main body 21 and the top surface portion 22 . The details of the configuration of the outer cover 20 will be described later.

(Configuration - inflow space)
Returning to FIG. 1 , the inflow space 40 is a space for causing gas containing smoke or carbon monoxide to flow into the fire detection device 1 from the outside of the fire detection device 1 . A plurality of inflow spaces 40 are formed inside the outer cover 20. Specifically, as shown in FIGS. , the second rib portion 24 , and the inner cover 30 form an inflow space 40 . The "smoke" and "carbon monoxide" described above correspond to the "first detection target" in the claims.

(Configuration - inner cover)
The inner cover 30 is a cover that covers the carbon monoxide detection space 61 , the smoke detection space 63 , the detection part cover 70 , the detection part main body 80 and the substrate 100 , and also serves as partitioning means for partitioning the inflow space 40 . The inner cover 30 is, for example, a substantially hollow cylindrical body with an open upper surface, and is made of a light-shielding resin material. As shown in FIG. 30 is provided so as to face the top surface portion 22 of the outer cover 20 with the inflow space 40 interposed therebetween.

Further, as shown in FIGS. 3 and 4, the inner cover 30 is provided with a first opening 30a and an inflow hole 30b in the lower side portion thereof. The first opening 30a is an opening for sending the gas that has flowed into the inflow space 40 to the smoke detection space 63. As shown in FIG. provided in the vicinity. The inflow hole 30b is an opening for sending the gas that has flowed into the inflow space 40 to the carbon monoxide detection space 61. As shown in FIG. , is provided at a portion of the lower side portion of the inner cover 30 that faces the carbon monoxide detection space 61 . The details of the configuration of the inner cover 30 will be described later. Further, the "outer cover 20" and "inner cover 30" described above correspond to the "casing" in the claims.

(Configuration - carbon monoxide detection space)
The carbon monoxide detection space 61 is a first detection space main body in which carbon monoxide is detected, and as shown in FIG. And a space surrounded by the substrate 100 is formed as a carbon monoxide detection space 61 .

(Configuration - heat detection space)
Returning to FIG. 3, the heat detection space 62 is a second detection space for detecting heat. As shown in FIG. A space located nearby is formed as a heat detection space 62 . The "heat" described above corresponds to the "second detection target" in the scope of claims.

(Configuration - smoke detection space)
The smoke detection space 63 is a first detection space main body in which smoke detection is performed, and as shown in FIG. A space to be detected is formed as a smoke detection space 63 .

(Construction - detector cover)
The detector cover 70 is partitioning means for partitioning the smoke detection space 63 and is an incidence suppressing means for suppressing disturbance light from entering the smoke detection space 63 . The detector cover 70 is a substantially hollow columnar body with an open upper surface, and is made of a light-blocking resin material. Moreover, as shown in FIG. 3, the detection section cover 70 is located inside the inner cover 30 so that the lower side portion of the detection section cover 70 extends from the top of the outer cover 20 via the first opening 30a and the inflow space 40 . It is arranged so as to face the surface portion 22 and is fixed to the detection portion main body 80 by a fitting structure or the like. Further, as shown in FIG. 3, a second opening 70a is formed in the lower side portion of the detection section cover 70. As shown in FIG. The second opening 70a is an opening for allowing the gas sent from the first opening 30a to flow into the smoke detection space 63. As shown in FIG. It is provided in a portion corresponding to one opening 30a.

(Composition - insect screen)
The insect screen 50 is a net for preventing insects outside the fire detection device 1 from entering the smoke detection space 63 . The insect screen 50 is constructed using a mesh-like circular net, and is attached to the detection section cover 70 as shown in FIG.

(Construction - detector body)
The detector main body 80 is mounting means for mounting the detector cover 70 , and is incident suppressing means for suppressing disturbance light from entering the smoke detection space 63 . The detector main body 80 is made of, for example, a light-shielding resin material. As shown in FIG. etc. is fixed. Further, the detection unit main body 80 is provided with support portions (not shown) for supporting each of the first light emitting portion, which will be described later, the second light emitting portion, which will be described later, and the light receiving portion, which will be described later. Further, the detection unit main body 80 has optical path holes (illustrated as omitted) are formed respectively.

(Configuration - terminal board)
The terminal board 90 is housing means for housing the inner cover 30 , the detection section cover 70 , the detection section main body 80 , and the board 100 . The terminal board 90 has a substantially hollow columnar shape with an open lower surface, and is made of, for example, a light-shielding resin material. 3, the terminal board 90 is provided so as to cover the inner cover 30, the detection section cover 70, the detection section main body 80, and the substrate 100 from above, and has a fitting structure with respect to the outer cover 20. etc., and is fixed to the mounting base 10 by means of a fixture or the like through a first mounting hole 91a formed in the mounting member 91. As shown in FIG.

(Configuration - substrate)
The substrate 100 is mounting means on which various electric circuits (not shown) are mounted. The board 100 is configured using, for example, a known flat circuit board or the like, and as shown in FIG. It is arranged substantially horizontally and is fixed to the terminal board 90 by a fixture via a mounting hole (not shown) formed in the terminal board 90 and a second mounting hole 91b formed in the mounting member 91 .

In addition to mounting known electronic components used in the conventional fire detection device 1 on the substrate 100, as shown in FIG. (not shown), heat sensing unit 110, display unit (not shown), communication unit (not shown), power supply unit (not shown), control unit (not shown), and storage unit (not shown) are mounted. .

(Configuration - board - smoke detector)
Among them, the smoke detector is the first detection target detecting means for detecting smoke. The smoke detection section is configured using, for example, known smoke detection means, and includes a first light emitting section, a second light emitting section, and a light receiving section (all not shown). Here, the first light emitting unit is a first light emitting means for irradiating the smoke detection space 63 with detection light (hereinafter referred to as "first detection light"), and is, for example, a known light emitting element (an example of which is an infrared LED, etc.). ). The second light emitting section is second light emitting means for irradiating the smoke detection space 63 with detection light having a wavelength different from that of the first detection light (hereinafter referred to as "second detection light"). It is configured using an element (eg, a blue LED or the like). Further, the light receiving unit receives scattered light due to smoke of the first detection light emitted from the first light emitting unit, outputs a first light receiving signal according to the received scattered light, and emits light from the second light emitting unit. light receiving means for receiving the scattered light of the second detection light from the smoke and outputting a second light receiving signal corresponding to the received scattered light, for example, using a known light receiving element (such as a photodiode as an example) It is configured. In addition, the method of installing the first light emitting unit, the second light emitting unit, and the light receiving unit is arbitrary, but in the embodiment, the first detection light emitted from the first light emitting unit or the second light emitting unit or the second It is installed so as to prevent the detection light from directly entering the light receiving section through various optical path holes of the detection section main body 80 . For example, the angle between the optical axis of the first light emitting section (hereinafter referred to as "first light emitting side optical axis") and the optical axis of the light receiving section (hereinafter referred to as "light receiving side optical axis") is about 135°. A first light emitting unit and a light receiving unit are installed at the positions. Further, the second light emitting unit and the light receiving unit are installed at a position where the angle between the optical axis of the second light emitting unit (hereinafter referred to as "second light emitting side optical axis") and the light receiving side optical axis is about 90°. ing.

(Configuration - substrate - carbon monoxide detector, heat detector)
Also, the carbon monoxide detection unit is first detection target detection means for detecting carbon monoxide. This carbon monoxide detection unit is configured using, for example, a known carbon monoxide detection element (for example, a CO sensor or the like), and is provided in a portion of the substrate 100 corresponding to the inflow hole 30b (that is, , provided in the vicinity of the inflow hole 30b inside the inner cover 30). Also, the heat sensing unit 110 is a second detection target detecting means for detecting heat. The heat sensing unit 110 is configured using, for example, a known heat sensing element (eg, a thermistor, etc.), and as shown in FIG. A part of the heat sensing portion 110 is arranged to be inserted into the heat detection space 62 through an insertion hole (not shown), an insertion hole 140a of the inner cover 30 described later, and an insertion hole 120 of the outer cover 20 described later. ing.

(Configuration - board - display part, communication part, power supply part)
In addition, the display unit emits light (hereinafter referred to as “display light”) toward the outside of the fire detection device 1 to display predetermined information (for example, information indicating whether or not a fire has been detected). This is display means, and is configured using, for example, known display means (LED, etc.). The method of projecting light from the display unit is arbitrary, but for example, insertion holes (not shown) provided in each of the detection unit cover 70 and the detection unit main body 80, an insertion hole 140b of the inner cover 30 described later, In addition, display light from the display unit is guided toward the outside of the fire detection device 1 through a light guide (not shown) inserted through an insertion hole 120 of the outer cover 20, which will be described later, to emit light. do. Also, the communication unit is communication means for communicating with an external device (for example, a receiver, etc.). The power supply unit is power supply means for supplying electric power supplied from a commercial power supply or a battery (not shown) to each unit of the fire detection apparatus 1 .

(Configuration - substrate - control unit, storage unit)
Also, the control unit is control means for controlling the fire detection device 1 . Specifically, this control unit includes a CPU, various programs interpreted and executed on the CPU (including a basic control program such as an OS, and an application program that is started on the OS and realizes a specific function), programs, and It is a computer configured with an internal memory such as a RAM for storing various data. The storage unit is storage means for storing programs and various data necessary for the operation of the fire detection device 1 . This storage unit is configured using a rewritable recording medium, and can use, for example, a non-volatile recording medium such as a flash memory.

(Composition - details of the composition of the outer cover)
Returning to FIG. 1, next, the details of the configuration of the outer cover 20 will be described. However, the outer cover 20 can be manufactured in any shape, method, and material, unless otherwise specified.

In the embodiment, as shown in FIGS. 1 to 3, the top surface portion 22, which is the side portion of the outer cover 20 opposite to the side portion on the installation surface 2 side, has an insertion hole 120 and a guard. A section 130 is provided.

(Structure - Details of Structure of Outer Cover - Insertion Hole)
The insertion hole 120 is a through hole for inserting a part of the heat sensing part 110 into the heat detection space 62 and irradiating the display light from the display part to the outside of the fire detection device 1 .

Here, the specific shape and size of the insertion hole 120 are arbitrary, but in the embodiment, the planar shape of the insertion hole 120 is set to a substantially elliptical shape as shown in FIG. (alternatively, it may have a polygonal shape such as a square shape). Moreover, the diameter of the insertion hole 120 is set to a size that allows only a portion of the heat sensing portion 110 to be exposed to the heat detection space 62 and allows the display light to be emitted to the outside of the fire detection device 1. For example, it is set longer than the sum of the diameter of the heat sensing portion 110 and the diameter of the light guide.

The insertion hole 120 may be formed by any method, but it is formed in a portion facing the inflow space 40. Specifically, as shown in FIG. forming. In this case, for example, the heat sensing part 110 and the display part may be installed in the part of the substrate 100 corresponding to the insertion hole 120 or in the vicinity thereof. Compared to the case where the insertion hole 120 is formed in the central portion of the top surface portion 22, such a forming method makes it less likely that the heat sensing portion 110 and the display portion will be attached to the heat sensing portion 110 and the display portion. can maintain the mountability of

With such an insertion hole 120, a part of the heat sensing part 110 can be inserted into the heat detection space 62 through the insertion hole 120, and the display light from the display part can be transmitted through the insertion hole 120 to the fire detection device. 1 can be irradiated toward the outside.

(Configuration - Details of configuration of outer cover - Guard section)
Returning to FIG. 1, the guard section 130 is guard means for protecting the heat sensing means. As shown in FIGS. 1 to 3, the guard part 130 is provided so as to cover the portion of the heat sensing part 110 exposed to the outside of the fire detection device 1 and the periphery of the insertion hole 120 . Further, the guard portion 130 is configured by combining a plurality of long ribs 131 (hereinafter referred to as "guard side ribs 131"). Specifically, as shown in FIGS. 1 to 3, The longitudinal direction of each of the plurality of guard-side ribs 131 is provided substantially along the vertical direction (in FIG. 2B and FIG. 3, they are provided with a slight inclination), and are spaced apart from each other. is erected against the lower surface of the top surface portion 22 .

With such a configuration, the insertion hole 120 can be prevented from being exposed to the outside of the fire detection device 1 by the guard portion 130, and the design of the fire detection device 1 can be improved without impairing the inflow of gas into the guard portion 130. can be maintained.

(Configuration - details of the configuration of the inner cover)
Next, the details of the configuration of the inner cover 30 will be described. However, the inner cover 30 can be manufactured in any shape, method, and material, unless otherwise specified.

In the embodiment, the inner cover 30 is provided with an insertion hole 140a, an insertion hole 140b, a first partition wall 150, and a second partition wall 160, as shown in FIG.

(Structure-details of inner cover structure-insertion hole)
The insertion hole 140a is a through hole for inserting a part of the heat sensing part 110 into the heat detection space 62, and the insertion hole 140b is for irradiating the display light from the display part to the outside of the fire detection device 1. It is a through hole. These insertion holes 140 a and 140 b are provided in portions of the lower side portion of the inner cover 30 that face the inflow space 40 and correspond to the insertion holes 120 , as shown in FIG. 4 .

(Configuration-details of configuration of inner cover-first partition wall)
The first partition wall 150 is a partition wall for partitioning the carbon monoxide detection space 61 so that the gas that has flowed into the carbon monoxide detection space 61 can be suppressed from flowing out to the heat detection space 62 . As shown in FIG. 4 , the first partition wall 150 is provided inside the inner cover 30 so as to protrude upward from the lower side portion of the inner cover 30 .

Further, although the specific configuration of the first partition wall 150 is arbitrary, in the embodiment, the carbon monoxide detection space 61 surrounds at least part of the inflow hole 30b and the carbon monoxide detection portion. is configured as Specifically, as shown in FIG. 4, the first partition wall 150 is a plate-like body whose planar shape is a U-shape (or an arc shape, etc.) that opens toward the outside of the inner cover 30. The first partition wall 150 covers the outer circumference of the carbon monoxide detection unit except for the portion on the outer cover main body 21 side. Incidentally, as shown in FIG. 4( a ), a portion of the side portion (hereinafter referred to as the “peripheral side portion”) projecting upward from the lower side portion of the side portion of the inner cover 30 ( In FIG. 4A, the portion on the side of the outer cover main body 21) is notched, but since the notched portion is covered with the outer cover main body 21, the gas that has flowed into the carbon monoxide detection space 61 is It is possible to avoid flowing out to the outside through the notched portion.

With such a configuration, it is possible to suppress the gas that has flowed into the carbon monoxide detection space 61 from flowing out to the heat detection space 62 . Therefore, compared to the case where the first partition wall 150 is not provided, it is possible to prevent the inflowing gas from interfering with the detection of the heat sensing part 110, and it is possible to maintain or improve the heat detection accuracy. In particular, since the first partition wall 150 is configured to partially surround the inflow hole 30b and the carbon monoxide detection portion in the carbon monoxide detection space 61, carbon monoxide is detected through the inflow hole 30b. It is possible to effectively prevent the gas flowing into the detection space 61 from flowing out to the heat detection space 62, making it easier to maintain heat detection accuracy. Here, "detection of the heat sensing part 110 is inhibited by the inflowing gas" means, for example, when the gas flowing in from the carbon monoxide detection space 61 flows out from the heat detection space 62 (that is, the carbon monoxide When an airflow is generated from the detection space 61 toward the heat sensing unit 110, the outside atmosphere is disturbed by the airflow, and the heat detection space 62 and the heat sensing unit 110 cannot be directly reached. When the air permeability of the heat detection space 62 is increased by the gas that has flowed in from 61 , even if the external atmosphere containing heat flows into the heat detection space 62 , it will easily blow through, and the external atmosphere will remain in the heat detection space 62 . Shorter time etc.

(Configuration-details of configuration of inner cover-second partition wall)
The second partition wall 160 is a partition wall for partitioning the heat detection space 62 so that the gas that has flowed into the inflow space 40 can be suppressed from flowing out into the heat detection space 62 . As shown in FIG. 4 , the second partition wall 160 is provided outside the inner cover 30 so as to project downward from the lower side portion of the inner cover 30 .

In addition, although the specific configuration of the second partition wall 160 is arbitrary, in the embodiment, in the inflow space 40, at least a portion of the periphery of the insertion hole 120, the insertion hole 140a, and the heat sensing portion 110 is surrounded. is configured to Specifically, as shown in FIG. 4, the second partition wall 160 is formed in a cylindrical body (for example, a cylindrical body, a square tube body, etc.), and the second partition wall 160 separates the insertion hole. 120, the insertion hole 140a, and the heat sensing portion 110 are arranged so as to cover the entire outer peripheries thereof. In addition, the length of the second partition wall 160 in the vertical direction is set to be substantially the same as the length of the inflow space 40 in the vertical direction, and the lower end portion of the second partition wall 160 contacts the top surface portion 22 . Furthermore, since the second partition wall 160 is arranged, the gas that has flowed into the inflow space 40 is prevented from flowing out into the heat detection space 62 through the gap between the lower end portion of the second partition wall 160 and the top surface portion 22. be done.

With such a configuration, it is possible to prevent the gas that has flowed into the inflow space 40 from flowing out to the heat detection space 62 . Therefore, compared to the case where the second partition wall 160 is not provided, it is possible to prevent the inflowing gas from interfering with the detection of the heat sensing part 110, and it is possible to maintain or improve the heat detection accuracy. In particular, since the second partition wall 160 is configured to surround the entire periphery of each of the insertion hole 120, the insertion hole 140a, and the heat sensing portion 110 in the inflow space 40, the gas flowing into the inflow space 40 It is possible to effectively prevent the heat from flowing into the heat detection space 62 through the insertion hole 120 or the insertion hole 140a, thereby making it easier to maintain the heat detection accuracy. Here, "detection of the heat sensing part 110 is hindered by the inflowing gas" means, for example, when the gas flowing in from the inflow space 40 flows out of the heat detection space 62 (that is, when heat is generated from the inflow space 40 side). When an air current directed toward the sensing unit 110 is generated, the external atmosphere is disturbed by the air current and cannot directly reach the heat detection space 62 and the heat sensing unit 110, or the gas flowing from the inflow space 40 interferes with the heat detection space. If the air permeability of 62 is high, even if the external atmosphere including heat flows into the heat detection space 62, it will be easier to blow through, and the time that the external atmosphere stays in the heat detection space 62 will be shortened. .

(Structure - details of structure of inner cover - other structure)
Moreover, although the method of forming the first partition wall 150 and the second partition wall 160 is arbitrary, in the embodiment, the first partition wall 150 and the second partition wall 160 and the inner cover 30 are integrally formed with each other. are doing. For example, it may be integrally formed by injection molding a resin material having a light shielding property. As a result, compared to the case where the first partition wall 150 and the second partition wall 160 and the inner cover 30 are separately formed, the trouble of attaching the first partition wall 150 and the second partition wall 160 to the inner cover 30 is eliminated. The manufacturability of the fire detection device 1 can be improved. In addition, the number of parts of the fire detection device 1 can be reduced, and the environmental load accompanying the manufacture of the fire detection device 1 can be reduced. However, the invention is not limited to this. They may be connected by means of fixtures, fitting structures, or the like.

(About the action of the fire detection device)
Next, the operation of the fire detection device 1 configured in this manner will be described.

That is, for example, in a state where the fire detection device 1 is attached to the installation surface 2, when the gas outside the fire detection device 1 flows into the carbon monoxide detection space 61 through the inflow space 40 and the inflow hole 30b, the first The first partition wall 150 prevents the inflowing gas from moving to a space inside the inner cover 30 other than the carbon monoxide detection space 61 . Therefore, the flowing gas can be prevented from flowing out into the heat detection space 62 .

Further, for example, when gas outside the fire detection device 1 flows into the inflow space 40 , the second partition wall 160 causes the inflow gas to move to the internal space of the second partition wall 160 in the inflow space 40 . inhibited. Therefore, the flowing gas can be prevented from flowing out into the heat detection space 62 .

(Effect of Embodiment)
As described above, according to the embodiment, the inflow space 40 for detecting the first detection target contained in the gas that has flowed in from the outside of the housing, the carbon monoxide detection space 61, and the smoke A detection space 63, a heat detection space 62 located outside the housing for detecting a second detection target, a first partition wall 150 provided in the housing, and a second The partition wall 160 separates the inflow space 40, the carbon monoxide detection space 61, or Since the first partition wall 150 and the second partition wall 160 for partitioning the heat detection space 62 are provided, the gas that has flowed into the inflow space 40 or the carbon monoxide detection space 61 can be prevented from flowing out to the heat detection space 62. can be suppressed. Therefore, as compared with the case where the first partition wall 150 and the second partition wall 160 are not provided, it is possible to prevent the inflowing gas from interfering with the detection of the second detection target by the heat sensing unit 110. It is possible to maintain or improve the detection accuracy of

Further, the insertion hole 120 and the insertion hole 140a are provided in a portion of the housing facing the inflow space 40, and the insertion hole 120 and the insertion hole 140a are provided for inserting a part of the heat sensing part 110 into the heat detection space 62. Since the insertion hole 140 a is provided and the second partition wall 160 is configured to surround at least a part of the periphery of the insertion hole 120 , the insertion hole 140 a and the heat sensing part 110 in the inflow space 40 , the heat flows into the inflow space 40 . It is possible to effectively suppress the flow of the generated gas into the heat detection space 62 through the insertion hole 120 and the insertion hole 140a, making it easier to maintain the detection accuracy of the second detection target.

In addition, the housing includes an inflow hole 30b and a carbon monoxide detection unit for detecting the first detection target. Since it is configured to surround at least a part of the periphery of the carbon monoxide detection unit, it is possible to effectively suppress the flow of the gas, which has flowed into the carbon monoxide detection space 61 through the inflow hole 30b, into the heat detection space 62. This makes it easier to maintain the detection accuracy of the second detection target.

In addition, since the inner cover 30 and the first partition wall 150 and the second partition wall 160 are integrally formed with each other, the inner cover 30 and the first partition wall 150 and the second partition wall 160 are formed separately. As compared with , the labor for attaching the first partition wall 150 and the second partition wall 160 to the inner cover 30 can be omitted, and the manufacturability of the fire detection device 1 can be improved. In addition, the number of parts of the fire detection device 1 can be reduced, and the environmental load accompanying the manufacture of the fire detection device 1 can be reduced.

In addition, since the first detection target is smoke or carbon monoxide and the second detection target is heat, it is possible to suppress the gas containing smoke or carbon monoxide from flowing out into the heat detection space 62, thereby improving the heat detection accuracy. can be maintained or improved.

[III] Modifications to the Embodiments Although the embodiments according to the present invention have been described above, specific configurations and means of the present invention are within the scope of the technical ideas of each invention described in the claims. In can be optionally modified and improved. Such modifications will be described below.

(Problem to be solved and effect of invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the contents described above, and may differ depending on the details of the implementation environment and configuration of the invention. or only part of the effects described above.

(About fire detection device)
Although the fire detection device 1 has the inner cover 30 in the above embodiment, the present invention is not limited to this, and the inner cover 30 may be omitted, for example. In this case, the first partition wall 150 and the second partition wall 160 may be provided inside the outer cover 20 .

Further, in the above-described embodiment, the fire detection device 1 has a carbon monoxide detector, but the present invention is not limited to this, and the carbon monoxide detector may be omitted, for example. In this case, the first partition wall 150 can be omitted.

(Regarding heat detection space)
Although the heat detection space 62 is positioned outside the outer cover 20 in the above embodiment, the present invention is not limited to this. For example, it may be located inside the outer cover 20 , and as an example, it may be located between the top surface portion 22 of the outer cover 20 and the inner cover 30 .

Further, in the above-described embodiment, the carbon monoxide detector is provided near the inflow hole 30b, but the present invention is not limited to this. For example, it may be provided at a position distant from the inflow hole 30b, or may be provided at a position near the insertion hole 120 as an example.

(About inner cover)
Although one inflow hole 30b is provided in the lower side portion of the inner cover 30 in the above embodiment, the present invention is not limited to this. For example, a plurality of them may be provided in a portion of the lower side portion of the inner cover 30 that faces the carbon monoxide detection space 61 .

(Regarding partition walls)
In the above embodiment, the first partition wall 150 is configured to surround only part of the inflow hole 30b and the carbon monoxide detection section in the carbon monoxide detection space 61. However, this is not the case. For example, it may be configured to surround the entire periphery of the inflow hole 30b and the carbon monoxide detection unit.

Further, in the above-described embodiment, the inflow space 40 is configured to surround the insertion hole 120, the insertion hole 140a, and the heat sensing portion 110 entirely. It may be configured to surround only part of the periphery of the hole 120 , the insertion hole 140 a , and the heat sensing portion 110 .

Further, in the above-described embodiment, the first partition wall 150 and the second partition wall 160 are provided, but the present invention is not limited to this. Either the wall 150 or the second partition wall 160 may be omitted.

(Appendix)
The fire detection device of Supplementary Note 1 is a fire detection device for detecting a fire in a monitored area, and includes: a housing; A first detection space for detecting a target, a second detection space located inside or outside the housing, the second detection space for detecting a second detection target, and the housing A partition wall provided in the first detection space or the second detection space so as to be able to suppress the gas that has flowed into the first detection space from flowing out to the second detection space and a partition wall for partitioning.

Further, the fire detection device of Supplementary Note 2 is the fire detection device of Supplementary Note 1, wherein the first detection space includes a first detection space main body in which detection of the first detection target is performed, and the first detection target. an inflow space for allowing the gas containing the gas to flow into the first detection space main body, and an insertion hole provided in a portion of the housing facing the inflow space, wherein the second detection target The second detection object detection means for detecting the second detection object detection means accommodated in the housing has an insertion hole for inserting a part of the second detection object detection means into the second detection space, and the partition wall surrounds at least a part of the insertion hole and the second detection object detection means in the inflow space.

Further, the fire detection device according to Appendix 3 is the fire detection device according to Appendix 1, which is an inflow hole provided in the housing, and causes the gas including the first detection target to flow into the first detection space. and a first detection object detection means for detecting the first detection object, the first detection object detection means accommodated in the first detection space, wherein the partition wall is and at least a part of the inflow hole and the first detection object detection means are surrounded in the first detection space.

Moreover, in the fire detection device according to any one of Appendixes 1 to 3, the fire detection device of Appendix 4 is such that the housing and the partition wall are formed integrally with each other.

Further, the fire detection device of Supplementary Note 5 is the fire detection device according to any one of Supplementary Notes 1 to 4, wherein the first detection target is smoke or carbon monoxide, and the second detection target is heat. is.

(Effect of Supplementary Note)
According to the fire detection device described in Supplementary Note 1, in the interior of the housing, the first detection space for detecting the first detection target contained in the gas that has flowed from the outside of the housing, and the exterior of the housing a second detection space for detecting a second detection target; and a partition wall provided in the housing, wherein the gas flowing into the first detection space is used for the second detection. A partition wall for partitioning the first detection space or the second detection space is provided so as to be able to suppress the gas from flowing out into the space. can be suppressed. Therefore, compared to the case where no partition wall is provided, it is possible to prevent the detection of the second detection target by the detection means from being hindered by the inflowing gas, and it is possible to maintain or improve the detection accuracy of the second detection target. becomes.

According to the fire detection device described in Supplementary Note 2, the insertion hole is provided in a portion of the housing that faces the inflow space, and a part of the second detection target detection means is inserted into the second detection space. and the partition wall surrounds at least a part of the periphery of the insertion hole and the second detection object detection means in the inflow space, so that the gas flowing into the inflow space passes through the insertion hole. The outflow to the second detection space can be effectively suppressed, and the detection accuracy of the second detection target can be easily maintained.

According to the fire detection device described in Supplementary Note 3, the inflow hole provided in the housing and the first detection target detection means for detecting the first detection target are provided, and the partition wall is positioned in the first detection space. Since at least a part of the inflow hole and the first detection object detection means is surrounded, the gas that has flowed into the first detection space through the inflow hole is effectively prevented from flowing out to the second detection space. , and the detection accuracy of the second detection target can be easily maintained.

According to the fire detection device described in appendix 4, since the housing and the partition wall are formed integrally with each other, the partition wall is attached to the housing more easily than when the housing and the partition wall are formed separately. The trouble of attaching can be omitted, and the manufacturability of the fire detection device can be improved. In addition, the number of parts of the fire detection device can be reduced, and the environmental load associated with the manufacture of the fire detection device can be reduced.

According to the fire detection device described in Supplementary Note 5, the first detection target is smoke or carbon monoxide, and the second detection target is heat, so gas containing smoke or carbon monoxide flows out into the second detection space. can be suppressed, and heat detection accuracy can be maintained or improved.

Reference Signs List 1 fire detection device 2 installation surface 10 mounting base 20 outer cover 21 outer cover main body 22 top surface portion 23 first rib portion 24 second rib portion 30 inner cover 30a first opening 30b inlet 40 inlet space 50 insect screen 61 monoxide Carbon detection space 62 Heat detection space 63 Smoke detection space 70 Detection part cover 70a Second opening 80 Detection part body 90 Terminal board 91 Mounting member 91a First mounting hole 91b Second mounting hole 100 Substrate 110 Heat sensing part 120 Insertion hole 130 Guard part 131 Guard side rib 140a Insertion hole 140b Insertion hole 150 First partition wall 160 Second partition wall

Claims (2)

A fire detection device for detecting fire in a monitored area, comprising:
a housing;
a first detection space inside the housing for detecting a first detection target contained in the gas that has flowed in from the outside of the housing;
a second detection space located inside or outside the housing, the second detection space for detecting a second detection target;
A partition wall provided in the housing, the first detection space or the second detection space so as to be able to suppress the gas flowing into the first detection space from flowing out to the second detection space a partition wall for partitioning the detection space ,
The first detection space is
a first detection space main body in which detection of the first detection target is performed;
an inflow space for causing the gas containing the first detection target to flow into the first detection space main body,
An insertion hole provided in a portion of the housing facing the inflow space, which is a second detection target detecting means for detecting the second detection target and is accommodated in the housing. further comprising an insertion hole for inserting a part of the second detection target detection means into the second detection space,
The partition wall is configured to surround at least a portion of the insertion hole and the second detection object detection means in the inflow space,
Fire detection device. A fire detection device for detecting fire in a monitored area, comprising:
a housing;
a first detection space inside the housing for detecting a first detection target contained in the gas that has flowed in from the outside of the housing;
a second detection space located inside or outside the housing, the second detection space for detecting a second detection target;
A partition wall provided in the housing, the first detection space or the second detection space so as to be able to suppress the gas flowing into the first detection space from flowing out to the second detection space a partition wall for partitioning the detection space;
an inflow hole provided in the housing for allowing the gas containing the first detection target to flow into the first detection space;
a first detection target detection means for detecting the first detection target, the first detection target detection means accommodated in the first detection space;
The partition wall is configured to surround at least a portion of the inflow hole and the first detection object detection means in the first detection space,
Fire detection device.

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