Smoke detector and chamber

A smoke detector and a chamber are provided. The chamber includes a bottom plate, top plate, a plurality of baffle ribs disposed between the bottom plate and top plate, a transmitter base disposed between the bottom plate and top plate, and a receiver base disposed between the bottom plate and top plate. The receiver base is arranged apart from the transmitter base, and a center point of the chamber, being taken as an apex, the receiver base, and the transmitter base jointly define an angle being in a range of 45 degrees to 65 degrees.

FIELD OF THE DISCLOSURE

The present disclosure relates to a smoke detector and a chamber, and more particularly to a smoke detector and a chamber that are capable of avoiding false alarm.

BACKGROUND OF THE DISCLOSURE

In order to prevent fires, people may install fire warning devices in their houses to avoid related accidents. Among the various fire warning devices, a smoke detector has the fastest warning speed. Therefore, most people will choose to install a smoke detector.

A conventional smoke detector includes a body, a transmitter disposed in the body, and a receiver disposed in the body. The detection principle of the conventional smoke detector is that when smoke from a fire enters the body, a detection light emitted by the transmitter is scattered due to the detection light impacting on a plurality of particles of the smoke, so that the receiver receives the detection light to issue an alarm. Accordingly, people who hear the alarm can immediately escape or take measures to extinguish the fire. However, when the conventional smoke detector detects cooking fumes (i.e., a white smoke) generated during cooking, the conventional smoke detector may issue a false alarm without the occurrence of an actual fire incident.

SUMMARY OF THE DISCLOSURE

In response to the above-referenced technical inadequacies, the present disclosure provides a smoke detector and a chamber to effectively improve the issues associated with conventional smoke detectors.

In one aspect, the present disclosure provides a smoke detector, which includes a chamber, an emitter, and a receiver. The chamber includes a bottom plate, a top plate, a plurality of baffle ribs, a transmitter base, and a receiver base. The baffle ribs are disposed between the bottom plate and the top plate. The baffle ribs are spaced apart from each other. The chamber defines a smoke collection space surrounded by the top plate, the bottom plate, and the baffle ribs. The chamber has a plurality of main channels that are in spatial communication with the smoke collection space. Any two of the baffle ribs adjacent to each other are provided with one of the main channels there between. The transmitter base is arranged in the smoke collection space. The receiver base is arranged in the smoke collection space. The receiver base is arranged apart from the transmitter base, and a center point of the chamber, being taken as an apex, the receiver base, and the transmitter base jointly define an angle being in a range of 45 degrees to 65 degrees. The emitter is disposed in the transmitter base. The emitter is capable of emitting a detection light toward the smoke collection space. The receiver is disposed in the receiver base. The receiver is capable of receiving the detection light.

In certain embodiments, the present disclosure provides a chamber, which includes a bottom plate, a top plate, a plurality of baffle ribs, a transmitter base, and a receiver base. The baffle ribs are disposed between the bottom plate and the top plate. The baffle ribs are spaced apart from each other. The chamber defines a smoke collection space surrounded by the top plate, the bottom plate, and the baffle ribs. The chamber has a plurality of main channels that are in spatial communication with the smoke collection space. Any two of the baffle ribs adjacent to each other are provided with one of the main channels therebetween. The transmitter base is arranged in the smoke collection space. The receiver base is arranged in the smoke collection space. The receiver base is arranged apart from the transmitter base, and a center point of the chamber, being taken as an apex, the receiver base, and the transmitter base jointly define an angle being in a range of 45 degrees to 65 degrees.

Therefore, the smoke detector and the chamber of the present disclosure can reduce the false alarms caused by the detection of cooking fumes (i.e., white smoke) generated during cooking through the design with an angle being in the range of 45 degrees to 65 degrees among the transmitter base, the receiver base, and the center point of the chamber. Specifically, when the detection light is irradiated on smoke, the detection light can penetrate the white smoke particles more easily than the black smoke particles (i.e., the smoke generated during a fire), and a reflection angle when the detection light is irradiated on the black smoke particles is larger than a reflection angle when irradiated on the white smoke particles. When the emitter disposed in the transmitter base emits the detection light, it would be significantly more difficult for the detection light reflected by the white smoke particles to be received by the receiver disposed in the receiver base, as compared to the detection light reflected by the black smoke particles. Accordingly, the smoke detector can prevent the receiver from receiving the detection light reflected by the white smoke particles, so as to reduce false alarms issued from the smoke detector due to the cooking fumes.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

Referring toFIG. 1toFIG. 7, an embodiment of the present disclosure provides a smoke detector1000that includes a chamber100, an emitter200disposed in the chamber100, and a receiver300that is disposed in the chamber100. Specifically, when a smoke generated by a fire in an environment enters the chamber100of the smoke detector1000, a detection light emitted by the emitter200is scattered by a plurality of particles of the smoke, so that the receiver300receives the detection light and issues a warning in the form of a fire alarm. In other words, any smoke detector that does not determine the occurrence of a fire incident by receiving the scattered detection light by the particles of smoke is not the smoke detector1000of the present disclosure. It should be noted that the chamber100, the emitter200, and the receiver300in the present embodiment are jointly defined as the smoke detector1000, but the present disclosure is not limited thereto. For example, in other embodiments of the present disclosure, the chamber100can be independently used (e.g., sold) or can be used in cooperation with other components. The following description describes the structure and connection relationship of each component of the smoke detector1000.

Referring toFIG. 2toFIG. 4, the chamber100includes a bottom plate1, a top plate2, a plurality of baffle ribs3disposed between the bottom plate1and the top plate2, a transmitter base4disposed between the bottom plate1and the top plate2, a receiver base5disposed between the bottom plate1and the top plate2, and an assist rib6that is disposed between the bottom plate1and the top plate2. Further, the chamber100defines a smoke collection space SP surrounded by the top plate2, the bottom plate1, and the baffle ribs3. To clearly illustrate the structure of the chamber100, the chamber100defines a center point C at the center of cross section thereof and a setting area A arranged between the transmitter base4and the receiver base5.

The bottom plate1in the present embodiment is substantially in a disc-shape. A first rough portion11is formed on a circular area of the bottom plate1. The first rough portion11is composed of a plurality of elongated convex structures spaced apart from each other in parallel. In other words, the first rough portion11is in a step shape, but the present disclosure is not limited thereto.

The top plate2in the present embodiment is substantially in a disc-shape. A second rough portion21is formed on a circular area of the top plate2. The second rough portion21is composed of a plurality of elongated convex structures spaced apart from each other in parallel. In other words, the second rough portion21is in the same shape (i.e., a step shape) as the first rough portion11. Accordingly, when there is no smoke in the smoke collection space SP, the second rough portion21and the first rough portion11are configured to prevent the detection light in the smoke collection space SP from being scattered.

Referring toFIG. 4toFIG. 6, the baffle ribs3are arranged annularly between the bottom plate1and the top plate2. The chamber100is generally cylindrical and has the smoke collection space SP. Specifically, the baffle ribs3are spaced apart from each other, so that any two of the baffle ribs3adjacent to each other are provided with a main channel7that is in spatial communication with the smoke collection space SP there-between. Further, none of the baffle ribs3is disposed in the setting area A. It should be noted that the baffle ribs3are integrally connected to the top plate2in the present embodiment, but the present disclosure is not limited thereto. For example, the baffle ribs3can be integrally connected to the bottom plate1.

Referring toFIG. 6andFIG. 7, in detail, each of the baffle ribs3is substantially in a V-shape, so as to have a first section31and a second section32connected to the first section31. Any two of the baffle ribs3adjacent to each other are provided with the main channel7. Any two of the first sections31adjacent to each other define a main inlet section71, and any two of the second sections32adjacent to each other define a main outlet section72. In other words, each of the main channels7is composed of the corresponding main inlet section71and the corresponding main outlet section72. When smoke enters the smoke collection space SP of the chamber100through any of the main channels7, the smoke sequentially passes through the corresponding main inlet section71and the corresponding main outlet section72.

Further, a cross section of each of the main inlet sections71is tapered toward a center of the chamber100, and a cross section of each of the main outlet sections72broadens toward the center of the chamber100. Specifically, in any two of the first sections31adjacent to each other, one of the first sections31is arranged to extend diagonally toward to the other of the first sections31, so that the corresponding main inlet section71is tapered toward the center of the chamber100. A slope321is formed on the end of each the second sections32. In any two of the second sections32adjacent to each other, the slope321of one of the second sections32is arranged to extend obliquely away from the other of the second sections32, so that each of the main outlet sections72gradually broadens toward the center of the chamber100. Accordingly, since each of the main inlet sections71are tapered toward the center of the chamber100and each of the main outlet sections72are broadened toward the center of the chamber100, the moisture in the air cannot easily enter the smoke collection space SP.

Referring toFIG. 2andFIG. 4, the transmitter base4is arranged in the smoke collection space SP. Specifically, the transmitter base4is arranged at a peripheral portion of the smoke collection space SP, and has a transmitting end41that faces and is in spatial communication with the smoke collection space SP and a first external end42opposite to the transmitting end41. The first external end42faces the outside of the chamber100. The first external outer end42is a closed structure and is not in spatial communication with the smoke collection space SP. Further, the transmitter base4in the present embodiment is composed of two groove structures matching with each other. The two groove structures of the transmitter base4form a transmitter accommodating space43that is configured to be disposed in the emitter200. The two groove structures of the transmitter base4are respectively disposed on the bottom plate1and the top plate2, but the present disclosure is not limited thereto. For example, the transmitter base4may also be a single groove structure disposed on the bottom plate1or the top plate2. In addition, two first convex portions44are respectively formed on two side edges of the transmitter base4(as shown inFIG. 4).

The receiver base5is disposed in the smoke collection space SP. Specifically, the receiver base5is arranged at the peripheral portion of the smoke collection space SP, and has a receiving end51that faces and is in spatial communication with the smoke collection space SP and a second external end52opposite to the receiving end51. The second external end52faces the outside of the chamber100. The second external outer end52is a closed structure and is not in spatial communication with the smoke collection space SP. Further, the receiver base5in the present embodiment is composed of two groove structures matching with each other. The two groove structures of the receiver base5form a receiver accommodating space53that is configured to be disposed in the receiver300. The two groove structures of the receiver base5are respectively disposed on the bottom plate1and the top plate2, but the present disclosure is not limited thereto. For example, the receiver base5may also be a single groove structure disposed on the bottom plate1or the top plate2. In addition, two second convex portions54are respectively formed on two side edges of the receiver base5(as shown inFIG. 4).

Further, the receiver base5is disposed apart from the transmitter base4, and the center point C of the chamber100, being taken as an apex of the bottom plate1or the top plate2, the receiver base5, and the transmitter base4jointly define an angle being in a range of 45 degrees to 65 degrees, and the angle in the present embodiment is 59 degrees. In other words, the transmitting end41of the transmitter base4and the receiving end51of the receiver base5face the center point C. As shown inFIG. 4, the transmitting end41and the receiving end51have the angle with respect to the center point C in the chamber100.

Referring toFIG. 5, the assist rib6in the present embodiment is substantially in a T-shape. The assist rib6is disposed in the setting area A. The chamber100has two minor channels8, one of the two minor channels8is arranged between the assist rib6and one of the first convex portions44adjacent to the assist rib6, and another one of the two minor channels8is arranged between the assist rib6and one of the second convex portions54adjacent to the assist rib6. The two minor channels8are in spatial communication with the smoke collection space SP. Specifically, the chamber100only has the two minor channels8in the setting area A, and does not have any of the main channels7.

In detail, each of the minor channels8is in a V-shape by the design of the shape of the assist rib6that is in the T-shape, so that each of the minor channels8has a minor inlet section81and a minor outlet section82that is connected to the minor inlet section81. A cross section of each of the minor inlet sections81is tapered toward a center of the chamber100, and a cross section of each of the minor outlet sections82broadens toward the center of the chamber100. Accordingly, since each of the minor inlet sections81and each of the minor outlet sections82are tapered, the moisture in the air cannot enter the smoke collection space SP. That is to say, each of the minor channels8has the same effect as each of the main channels7.

Referring toFIG. 6, the chamber100has a side channel9A that is arranged between one of the first convex portions44away from the assist rib6and one of the baffle ribs3adjacent to the transmitter base4. The side channel9A defines a side entrance area91A and a side exit area92A connected to the side entrance area91A in an order from the outside of the chamber100toward the direction of the smoke collection space SP. A cross section of the side entrance areas91A is tapered toward a center of the chamber100, and a cross section of each of the side exit areas92A broadens toward the center of the chamber100.

Preferably, a side auxiliary rib6A is provided between one of the first convex portions44of the chamber100and one of the baffle ribs3adjacent to the transmitter base4, so that the side channel9A has two minor side channels9A′. Each of the two minor side channels9A′ has the side entrance area91A and the side exit area92A, but the present disclosure is not limited thereto.

Referring toFIG. 7, the chamber100has a side channel9B that is arranged between one of the second convex portions54away from the assist rib6and one of the baffle ribs3adjacent to the receiver seat5. The side channel9B defines a side entrance area91B and a side exit area92B connected to the side entrance area91A in an order from the outside of the chamber100toward the direction of the smoke collection space SP. A cross section of the side entrance areas91B is tapered toward a center of the chamber100, and a cross section of each of the side exit areas92B broadens toward the center of the chamber100. The emitter200is disposed in the transmitter base4, and is capable of emitting a detection light toward the smoke collection space SP. Specifically, the emitter200is directed toward the transmitting end41of the transmitter base4, the emitter200can emit the detection light in the direction of the center point C of the chamber100. More specifically, the emitter200in the present embodiment is an infrared light-emitting diode, and the detection light is infrared light, but the present disclosure is not limited thereto.

The receiver300is disposed in the receiver base5and is capable of receiving the detection light. Specifically, the receiver300faces the receiving end51of the receiver base5, so that the receiver300can receive the detection light passing through the receiving end51. More specifically, the receiver300in the present embodiment is an infrared light receiving diode, but the present disclosure is not limited thereto.

In conclusion, the smoke detector1000and the chamber100of the present disclosure can reduce the false alarms caused by the detection of cooking fumes (i.e., white smoke) generated during cooking through the design with an angle being in a range of 45 degrees to 65 degrees among the transmitter base4, the receiver base5, and the center point C of the chamber100. Specifically, when the detection light is irradiated on smoke, the detection light can penetrate the white smoke particles more easily than the black smoke particles (i.e., the smoke generated during a fire), and a reflection angle when the detection light is irradiated on the black smoke particles is larger than a reflection angle when irradiated on the white smoke particles. When the emitter200disposed in the transmitter base4emits the detection light, it would be significantly more difficult for the detection light reflected by the white smoke particles to be received by the receiver300disposed in the receiver base5, as compared to the detection light reflected by the black smoke particles. Accordingly, the smoke detector1000can prevent the receiver300from receiving the detection light reflected by the white smoke particles, so as to reduce the false alarms issued from the smoke detector due to cooking fumes.