CN218630956U

CN218630956U - Point type temperature-sensing fire detector

Info

Publication number: CN218630956U
Application number: CN202222435545.8U
Authority: CN
Inventors: 刘超平; 姜宪明; 沈忠; 谢海东
Original assignee: Jade Bird Fire Co Ltd
Current assignee: Jade Bird Fire Co Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-03-14
Anticipated expiration: 2032-09-14

Abstract

The utility model provides a point type temperature sensing fire detector, include: the box body is internally provided with an installation cavity; the shielding cover is connected to the outside of the box body, an accommodating cavity is formed in the shielding cover and is communicated with the mounting cavity, and an air inlet channel is formed in the outer side of the shielding cover and is communicated with the accommodating cavity; a circuit board disposed within the mounting cavity; and the temperature sensor is arranged in the accommodating cavity and electrically connected with the circuit board. Wherein, through setting up temperature sensor in the holding chamber of shield cover, avoided temperature sensor directly to expose, and then made temperature sensor be difficult for by outside static damage. Through set up inlet channel in the shield cover outside, make during outside air can get into the shield cover, do benefit to temperature sensor and experience outside ambient temperature.

Description

Point type temperature-sensing fire detector

Technical Field

The utility model belongs to the technical field of the fire detection technique and specifically relates to a point type temperature sensing fire detector.

Background

The temperature-sensing fire detector mainly detects fire or performs fire early warning by using a thermosensitive element, and is widely applied to places such as kitchens, boiler rooms, machine rooms, workshops and laboratories.

After the energy storage battery is produced, the energy storage battery needs to be subjected to a high-temperature aging test in a battery aging bin (the test temperature is generally 45-50 ℃). When carrying out high temperature aging test to energy storage battery, need use temperature sensing fire detector to monitor the temperature of each energy storage battery in the ageing storehouse of battery to report to the police when energy storage battery temperature is unusual, guarantee fire control safety. When the high-temperature aging test is carried out on the energy storage battery, static electricity is easily generated in the battery aging bin, most of thermosensitive elements of the current temperature-sensing fire detector are exposed outside, the thermosensitive elements are easily damaged by the static electricity, and the fault rate of the temperature-sensing fire detector is high.

The statements in the background section are merely prior art as they are known to the inventors and do not, of course, represent prior art in the field.

SUMMERY OF THE UTILITY MODEL

To one or more defects among the prior art, the utility model provides a point type temperature sensing fire detector, include:

the box body is internally provided with an installation cavity;

the shielding cover is connected to the outside of the box body, an accommodating cavity is formed in the shielding cover and is communicated with the mounting cavity, and an air inlet channel is formed in the outer side of the shielding cover and is communicated with the accommodating cavity;

a circuit board disposed within the mounting cavity; and

and the temperature sensor is arranged in the accommodating cavity and electrically connected with the circuit board.

According to an aspect of the present invention, the shield case has a plurality of spiral-shaped grills surrounding the accommodation chamber, the air intake passage is formed between the grills.

According to the utility model discloses an aspect, the holding intracavity is provided with a plurality of water conservancy diversion bars, the water conservancy diversion bars with the grid is connected, and is a plurality of the water conservancy diversion bars enclose into the holding district, temperature sensor is located the holding district.

According to an aspect of the present invention, the box body includes:

a box body provided with an opening; and

the box cover is arranged at the opening and used for closing the opening;

wherein, the box body and the box cover are detachably connected.

According to one aspect of the utility model, two opposite side walls in the box body are respectively provided with a support rib; the circuit board is lapped on the support rib and is clamped by the box cover and the support rib.

According to the utility model discloses an aspect, the circuit board towards one side of the bottom of box body is connected with the pilot lamp, the bottom of box body is provided with the light-emitting hole.

According to an aspect of the utility model, some type temperature sensing fire detector still includes leaded light spare, leaded light spare includes:

a limiting part;

the light inlet part is connected to one side of the limiting part; and

the light emitting part is connected to the other side of the limiting part;

the limiting part is positioned at the bottom of the box body, the light inlet part is opposite to the indicator light, and the light outlet part is inserted in the light outlet hole.

According to the utility model discloses an aspect, advance the one end that light portion kept away from spacing portion with the circuit board butt, the one end that light portion kept away from spacing portion is provided with the recess, the pilot lamp is located in the recess.

According to one aspect of the present invention, the light guide further includes a sealing portion, the sealing portion is connected to the limiting portion, and the sealing portion is provided with a first through hole;

the sealing part is located between the temperature sensor and the circuit board, the first through hole is configured to allow the temperature sensor to pass through, sealing glue is arranged around the circuit board, and the sealing glue seals the first through hole, a gap between the circuit board and the sealing part and a gap between the circuit board and the box body.

According to the utility model discloses an aspect, the one end of box body is provided with the connecting plate, be provided with the second through-hole on the connecting plate.

Compared with the prior art, the embodiment of the utility model provides a point type temperature sensing fire detector, the size is little, is applicable to narrow and small space. Through setting up temperature sensor in the holding chamber of shield cover, avoided temperature sensor directly to expose, and then made temperature sensor be difficult for by outside static damage. Through set up inlet channel in the shield cover outside, make during outside air can get into the shield cover, do benefit to temperature sensor and experience outside ambient temperature.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 illustrates a schematic view of a point-type temperature-sensitive fire detector according to an embodiment of the present invention;

fig. 2 illustrates an explosion view of a point-type temperature-sensitive fire detector according to an embodiment of the present invention;

fig. 3 shows a schematic view of a cassette body and a shield according to an embodiment of the invention;

fig. 4 illustrates another directional view of an explosion diagram of a point-type temperature-sensitive fire detector according to an embodiment of the present invention.

In the figure: 100. a point type temperature-sensitive fire detector; 110. a box body; 111. a box body; 112. a box cover; 113. a mounting cavity; 114. a wire outlet hole; 115. a male buckle; 116. a female buckle; 117. supporting ribs; 1171. a step surface; 118. a light exit hole; 120. a shield case; 121. an accommodating cavity; 122. an air intake passage; 123. a grid; 124. a flow guiding grid; 130. a circuit board; 131. a return line; 140. a temperature sensor; 150. an indicator light; 160. a light guide; 161. a limiting part; 162. a light inlet part; 163. a light-emitting part; 164. a groove; 165. a protrusion; 166. a sealing part; 167. a first through hole; 170. a connecting plate; 171. a second via.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection, either mechanically, electrically, or in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Fig. 1 shows a schematic diagram of a point-type temperature-sensitive fire detector 100 according to an embodiment of the present invention, fig. 2 shows an explosion diagram of the point-type temperature-sensitive fire detector 100 according to an embodiment of the present invention, and fig. 3 shows a schematic diagram of a box body 111 and a shield cover 120 according to an embodiment of the present invention, which will be described in detail with reference to fig. 1 to 3.

As shown in fig. 1 and 2, the point-type temperature-sensitive fire detector 100 includes a case 110, a shield cover 120, a circuit board 130, and a temperature sensor 140. The case body 110 may include a case body 111 and a case cover 112, wherein the case body 111 has a mounting cavity 113, and an opening is provided at one side (upper side in fig. 2) of the case body 111. The box cover 112 is used for closing the opening, specifically, the box cover 112 is disposed at the opening and is connected with the box body 111 in a snap-fit manner, in other embodiments, the box cover 112 and the box body 111 can be detachably connected by a connection manner such as a screw connection.

As shown in fig. 2 and 3, the shield cover 120 is connected to one end (left end in fig. 2) of the box body 111, and the shield cover 120 may be integrally formed with the box body 111 or may be fixed to the box body 111 by a connection means such as welding or bonding. An accommodating cavity 121 is formed in the shielding case 120, a plurality of air inlet channels 122 communicated with the accommodating cavity 121 are further formed on the outer side of the shielding case 120, and external air can enter the shielding case 120 through the air inlet channels 122. A circuit board 130 is disposed within the mounting cavity 113, and control circuitry and/or chips may be disposed on the circuit board 130. The circuit board 130 may further be connected with a return line 131, a wire outlet 114 is disposed at the other end (right end in fig. 2) of the box body 111, and the return line 131 passes through the wire outlet 114. A communication hole is provided at the junction of the box body 111 and the shield cover 120 to communicate the accommodation chamber 121 with the installation chamber 113. The temperature sensor 140 may be a negative temperature coefficient temperature sensor (NTC temperature sensor), the temperature sensor 140 is disposed in the accommodating chamber 121, and the temperature sensor 140 may be electrically connected to the circuit board 130 through a wire or may be directly mounted on the circuit board 130. By arranging the temperature sensor 140 in the accommodating cavity 121, the temperature sensor 140 can be prevented from being directly exposed, and the temperature sensor 140 is not easily damaged by external static electricity; the temperature of the external environment may be monitored by the temperature sensor 140 so as to perform a fire alarm or a warning according to a signal output from the temperature sensor 140. The temperature sensor 140 can be powered through the circuit board 130 and the return line 131, and processes and transmits a signal output from the temperature sensor 140.

According to an embodiment of the present invention, as shown in fig. 2 and 3, the shielding case 120 includes a plurality of spiral grills 123 disposed around the accommodating chamber 121, the air inlet passage 122 is formed between adjacent grills 123, and the air inlet passage 122 is also substantially spiral. The spiral grille 123 and the air inlet passage 122 are not only beneficial to the external air entering the accommodating cavity 121, but also can enable the temperature sensor 140 to detect the external environment temperature more accurately, and can improve the creepage distance of static electricity entering the accommodating cavity 121, so that the temperature sensor 140 is not easy to be damaged by external static electricity.

According to an embodiment of the present invention, as shown in fig. 2 and fig. 3, a plurality of flow guiding grids 124 are disposed in the accommodating cavity 121, the flow guiding grids 124 and the grids 123 are integrally formed, the plurality of flow guiding grids 124 enclose an accommodating area, and the temperature sensor 140 is located in the accommodating area and abuts against the flow guiding grids 124. In the present embodiment, as shown in fig. 2 and 3, 8 grills 123 are provided, 4 air grids 124 are provided, and two air inlet passages 122 are provided between every two adjacent air grids 124 to facilitate air circulation. The air guide fence 124 can position the temperature sensor 140 on one hand, and can guide the air entering the accommodating cavity 121 to blow directly on the temperature sensor 140 on the other hand, so that the temperature sensor 140 can detect the external environment temperature more accurately.

According to an embodiment of the present invention, as shown in fig. 2, a plurality of male buckles 115 are disposed at the edge of the box cover 112, a plurality of female buckles 116 adapted to the male buckles 115 are disposed on the inner sidewall of the box body 111, and when the box cover 112 is closed on the box body 111, the male buckles 115 are engaged with the corresponding female buckles 116. The connection mode of the buckle connection is adopted to connect the box cover 112 and the box body 111, so that the point-type temperature-sensing fire detector 100 is convenient to assemble, disassemble and maintain. In other embodiments, a card slot may be used in place of the female snap 116.

According to an embodiment of the present invention, as shown in fig. 2 and 3, a plurality of support ribs 117 are respectively disposed on two opposite sidewalls of the box body 111, and a step surface 1171 is disposed in the middle of each support rib 117. The circuit board 130 is disposed in the box body 111, and the edge of the circuit board 130 overlaps the step surface 1171 of the support rib 117. When the cover 112 is closed on the body 111, the cover 112 and the support ribs 117 clamp the circuit board 130, thereby stably fixing the circuit board 130 in the case body 110. The support ribs 117 can provide support for mounting the circuit board 130, and can also enhance the structural strength of the box body 111, so that the box body 111 is not easily damaged.

Fig. 4 illustrates another directional view of an explosion diagram of the point-type temperature-sensitive fire detector 100 according to an embodiment of the present invention. As shown in fig. 4, an indicator lamp 150 is connected to a side of the circuit board 130 facing the bottom of the case body 111, and a light exit hole 118 is provided at a position of the bottom of the case body 111 opposite to the indicator lamp 150. The indicator light 150 may be used to display the operating state of the point-type temperature-sensitive fire detector 100, or may be used to alarm, for example, when the point-type temperature-sensitive fire detector 100 is in a normal operating state, the indicator light 150 flashes once every preset time, and when the temperature sensor 140 detects that the external environment temperature is abnormal (for example, the external environment temperature is greater than 85 ℃), the point-type temperature-sensitive fire detector 100 sends an alarm signal through the return line 131, and the indicator light 150 is normally on.

According to an embodiment of the present invention, as shown in fig. 2 and 4, the point-type temperature-sensitive fire detector 100 further includes a light guide 160. The light guide 160 is disposed between the indicator light 150 and the light outlet 118, and the light guide 160 may include a position limiting portion 161, a light inlet portion 162, and a light outlet portion 163, wherein the position limiting portion 161 is located at the bottom of the box body 111. The light emitting part 163 is connected to a side of the limiting part 161 opposite to the circuit board 130, and the light emitting part 163 is inserted into the light emitting hole 118. The light inlet part 162 is connected to one side of the limiting part 161 facing the circuit board 130, a groove 164 for accommodating the indicator light 150 is arranged at one end of the light inlet part 162 far away from the limiting part 161, and the groove 164 may be surrounded by a plurality of protrusions 165 arranged at the end of the light inlet part 162. The indicator 150 is disposed in the groove 164, and the circuit board 130 abuts against the light inlet portion 162 to limit the light guide member 160. The light emitted by the indicator light 150 can be guided out from the light outlet 118 through the light guide member 160, and the light outlet 118 can be sealed, so that external moisture and static electricity are not easy to enter the box body 110.

According to an embodiment of the present invention, as shown in fig. 2, the light guide 160 further includes a sealing portion 166, the sealing portion 166 is fixedly connected to one end (left end in fig. 2) of the limiting portion 161, and the sealing portion 166 is substantially perpendicular to the limiting portion 161. A first through hole 167 through which the temperature sensor 140 can pass is provided at the center of the sealing portion 166. The sealing portion 166 is located between the temperature sensor 140 and the circuit board 130, and abuts against the left end of the cassette body 111. Sealant is arranged around the circuit board 130 to seal the first through hole 167, the gap between the circuit board 130 and the sealing portion 166, and the gap between the circuit board 130 and the box body 110, so that a relatively closed space is formed between the circuit board 130 and the bottom of the box body 111, and external moisture and static electricity are not easy to enter the space, thereby protecting circuits and devices on the circuit board 130.

According to an embodiment of the present invention, as shown in fig. 1, two connection plates 170 are connected to one end (right end in fig. 2) of the box body 111, and a second through hole 171 is provided on the connection plates 170. The point-type temperature-sensitive fire detector 100 may be fixed to a mounting position using a bolt-fitted connection plate 170.

Compared with the prior art, the embodiment of the utility model provides a point type temperature sensing fire detector 100, the size is little, is applicable to narrow and small space. Moreover, the temperature sensor 140 is disposed in the accommodating cavity 121 of the shielding case 120, so that the temperature sensor 140 is prevented from being directly exposed, and the temperature sensor 140 is not easily damaged by external static electricity. By providing the air inlet passage 122 outside the shield cover 120, outside air can enter the shield cover 120, which facilitates the temperature sensor 140 to sense the outside ambient temperature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spot type temperature-sensitive fire detector characterized by comprising:

the box body is internally provided with an installation cavity;

a circuit board disposed within the mounting cavity; and

2. The point-type temperature-sensitive fire detector according to claim 1, wherein the shield has a plurality of spiral-shaped grills disposed around the receiving cavity, the grills forming the air intake passage therebetween.

3. The point-type temperature-sensitive fire detector according to claim 2, wherein a plurality of flow-guiding grids are disposed in the accommodating chamber, the flow-guiding grids are connected to the grids, the plurality of flow-guiding grids surround an accommodating area, and the temperature sensor is located in the accommodating area.

4. The point-type temperature-sensitive fire detector according to claim 1, wherein the case includes:

a box body provided with an opening; and

the box cover is arranged at the opening and used for sealing the opening;

wherein, the box body and the box cover are detachably connected.

5. The point-type temperature-sensitive fire detector according to claim 4, wherein support ribs are provided on two opposite side walls in the box body, respectively; the circuit board is lapped on the support rib and is clamped by the box cover and the support rib.

6. The point-type temperature-sensitive fire detector according to claim 4, wherein an indicator light is connected to a side of the circuit board facing the bottom of the box body, and a light-emitting hole is provided at the bottom of the box body.

7. The temperature-sensitive fire detector according to claim 6, wherein the temperature-sensitive fire detector further comprises a light guide, the light guide comprising:

a limiting part;

the light inlet part is connected to one side of the limiting part; and

the light emitting part is connected to the other side of the limiting part;

8. The point-type temperature-sensitive fire detector according to claim 7, wherein an end of the light inlet portion remote from the limiting portion abuts against the circuit board, an end of the light inlet portion remote from the limiting portion is provided with a groove, and the indicator light is located in the groove.

9. The point-type temperature-sensitive fire detector according to claim 7, wherein the light guide further comprises a sealing part, the sealing part being connected to the stopper part, the sealing part being provided with a first through hole;

wherein, the sealing part be located temperature sensor with between the circuit board, first through-hole configures into and supplies temperature sensor passes through, be provided with sealed glue around the circuit board, sealed glue seals first through-hole the clearance between circuit board and the sealing part and the circuit board with clearance between the box body.

10. The point-type temperature-sensitive fire detector according to claim 1, wherein a connection plate is provided at one end of the case, and a second through hole is provided in the connection plate.