A fire detector

Abstract

The utility model relates to the technical field of fire detectors and discloses a fire detector, comprising a fire detector body, a self-tapping screw is installed on the top of the fire detector body, a shell is installed on the bottom of the fire detector body, a plurality of air inlet slots are arranged on the outer side of the shell, a filter is installed on the inner wall of the air inlet slot, and a cleaning component is arranged on one side of the filter; the cleaning component comprises a fixing frame and a support rod, a timing switch and a stepper motor are respectively installed on one side of the support rod, a second rotating shaft is fixed on the output shaft end of the stepper motor, and a filter is arranged through the air inlet slots opened around the bottom of the shell, the filter can effectively prevent external impurities such as flying insects and dust from entering the interior of the fire detector body, thereby protecting sensitive components inside the fire detector body from pollution, and the fire detector body can more accurately detect and identify fire-related signals such as smoke and temperature, reduce the possibility of false alarms, and improve the accuracy of fire detection.

Description

Technical Field

[0001] The utility model relates to the technical field of fire detectors, in particular to a fire detector. Background Art

[0002] Fire detectors are devices used in fire alarm systems to detect fires on site. Fire detectors are the "sensory organs" of the system, and their function is to monitor whether there is a fire in the environment. Once there is a fire, the characteristic physical quantities of the fire, such as temperature, smoke, gas, and radiation intensity, are converted into electrical signals, and the fire alarm controller is immediately activated to send an alarm signal.

[0003] Fire detectors are an important part of fire alarm systems. They are mainly used to detect the early stages of fire so as to send out alarm signals in time to protect people's lives and property. However, existing fire detectors are often affected by the external environment during use, such as the entry of impurities such as flying insects and dust, which leads to contamination and damage of sensitive components inside the detector, thereby affecting the accuracy and reliability of the detector. Therefore, a fire detector is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a fire detector to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a fire detector, comprising a fire detector body, a self-tapping screw is installed on the top of the fire detector body, a shell is installed on the bottom of the fire detector body, a plurality of air inlet slots are arranged on the outside of the shell, a filter is installed on the inner wall of the air inlet slot, and a cleaning component is arranged on one side of the filter;

[0006] The cleaning assembly includes a fixed frame and a support rod, a timing switch and a stepper motor are respectively installed on one side of the support rod, a second rotating shaft is fixed to the output shaft end of the stepper motor, an air storage chamber is opened inside the fixed frame, the bottom of the inner wall of the shell is rotatably connected to the first rotating shaft through a sealed bearing, and a plurality of air injection holes are opened on the outer side of the first rotating shaft.

[0007] Preferably, the outer sides of the first rotating shaft and the second rotating shaft are rotatably connected to one side of the fixing frame through sealed bearings, and an air delivery groove is provided inside the first rotating shaft, and the air delivery groove is connected to the air injection hole.

[0008] Preferably, an air inlet hole is provided on the inner wall of the air delivery groove, the air inlet hole is communicated with the air storage chamber, and the bottom of the first rotating shaft is fixed to the top axis of the second rotating shaft.

[0009] Preferably, a first limiting ring and a second limiting ring are respectively fixed to the outer side of the first rotating shaft, and one side of the first limiting ring and the second limiting ring is slidably connected to the inner wall of the air storage cavity.

[0010] Preferably, a fan is installed on one side of the stepper motor, the air outlet end of the fan is connected to an air outlet pipe, and the air outlet end of the air outlet pipe is connected to the air storage chamber.

[0011] Preferably, the electrical output end of the timing switch is connected to the input end of the stepping motor and the fan respectively, and the air jet hole is located at the inner center of the shell.

[0012] Preferably, the top of the fixing frame is fixed to the bottom center of the shell, and the top of the support rod is fixed to one side of the bottom of the shell.

[0013] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0014] 1. By setting a filter in the air inlet slots around the bottom of the shell, the filter can effectively prevent external impurities such as flying insects and dust from entering the fire detector body, thereby protecting the sensitive components inside the fire detector body from pollution. The fire detector body can more accurately detect and identify fire-related signals such as smoke and temperature, reduce the possibility of false alarms, and improve the accuracy of fire detection.

[0015] 2. Control the stepper motor and fan to start working through the timing switch. When the output shaft of the stepper motor drives the first shaft to rotate, multiple air inlets and jet holes rotate accordingly. When the fan is working, the outside air is transported to the inside of the air storage cavity through the air outlet pipe, and the gas is transported to the inside of the jet hole through the gas delivery groove. At this time, the jet hole sprays gas, and the gas blows the filter to clean it, blows off the dust adsorbed on the outside of the filter, and blows the filter in all directions to clean it, effectively removing the dust adsorbed on the outside of the filter, ensuring the continuous and effective operation of the filter, thereby ensuring the stability of the fire detector body during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model from a third viewing angle;

[0020] Figure 4 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 6 It is a schematic diagram of the main cross-sectional structure of the fixing frame of the utility model.

[0023] Explanation of the reference numerals: 1. Fire detector body; 2. Self-tapping screws; 3. Shell; 4. Air inlet slot; 5. Filter; 6. Cleaning assembly; 61. Fixing bracket; 62. Fan; 63. Stepping motor; 64. Timing switch; 65. Support rod; 66. First rotating shaft; 67. Jet hole; 68. Air outlet pipe; 69. Second rotating shaft; 610. Air storage chamber; 611. First limiting ring; 612. Air delivery slot; 613. Air inlet hole; 614. Second limiting ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0026] Example

[0027] See also Figure 1-6The utility model provides a technical solution: a fire detector, including a fire detector body 1, a self-tapping screw 2 is installed on the top of the fire detector body 1, and a filter 5 is arranged at the air inlet slot 4 opened around the bottom of the shell 3. The filter 5 can effectively prevent external impurities such as flying insects and dust from entering the fire detector body 1. The fire detector body 1 is installed with a shell 3 at the bottom, and a plurality of air inlet slots 4 are arranged on the outside of the shell 3. The filter 5 is installed on the inner wall of the air inlet slot 4 to protect the sensitive components inside the fire detector body 1 from pollution. The fire detector body 1 can more accurately detect and identify fire-related signals such as smoke and temperature, and reduce the possibility of false alarms. A cleaning component 6 is arranged on one side of the filter 5;

[0028] In order to facilitate cleaning of the filter screen 5, a cleaning assembly 6 is provided. The cleaning assembly 6 includes a fixing frame 61 and a support rod 65. A timing switch 64 and a stepper motor 63 are respectively installed on one side of the support rod 65. A second rotating shaft 69 is fixed to the output shaft end of the stepper motor 63. When the stepper motor 63 is working, the output shaft of the stepper motor 63 drives the first rotating shaft 66 and the second rotating shaft 69 to rotate respectively. When the first rotating shaft 66 rotates, the plurality of air inlet holes 613 and the air jet holes 67 rotate accordingly. An air storage chamber 610 is provided inside the fixing frame 61. The bottom of the inner wall of the shell 3 is rotatably connected with a first rotating shaft 66 through a sealed bearing, and a plurality of jet holes 67 are provided on the outer side of the first rotating shaft 66. The outer sides of the first rotating shaft 66 and the second rotating shaft 69 are both rotatably connected to one side of the fixed frame 61 through sealed bearings. An air delivery groove 612 is provided inside the first rotating shaft 66. When the fan 62 is working, the outside air is delivered to the inside of the air storage chamber 610 through the air outlet pipe 68. At this time, the outside gas enters the inside of the air delivery groove 612 through the air inlet hole 613, and the air delivery groove 612 is connected with the jet hole 67.

[0029] An air inlet hole 613 is provided on the inner wall of the air delivery groove 612, and the air inlet hole 613 is connected to the air storage chamber 610. The bottom of the first rotating shaft 66 is fixed to the top axis of the second rotating shaft 69. The first limiting ring 611 and the second limiting ring 614 are respectively fixed to the outer side of the first rotating shaft 66. The gas is transported to the inner side of the jet hole 67 through the air delivery groove 612. At this time, the jet hole 67 sprays gas, and the gas blows and cleans the filter 5. One side of the first limiting ring 611 and the second limiting ring 614 is slidably connected to the inner wall of the air storage chamber 610. A fan 62 is installed on one side of the stepping motor 63. The first limiting ring 611 and the second limiting ring 614 prevent the first rotating shaft 66 and the second rotating shaft 69 from changing their upper and lower positions. The air outlet end of the fan 62 is connected to the air outlet pipe 68, and the air outlet end of the air outlet pipe 68 is connected to the air storage chamber 610.

[0030] The electrical output end of the timing switch 64 is connected to the input end of the stepper motor 63 and the fan 62 respectively. The timing switch 64 controls the stepper motor 63 and the fan 62 to start working. When the stepper motor 63 is working, the output shaft of the stepper motor 63 drives the first rotating shaft 66 and the second rotating shaft 69 to rotate respectively. The air jet hole 67 is located at the inner center of the shell 3, the top of the fixing frame 61 is fixed at the bottom center of the shell 3, and the top of the support rod 65 is fixed to the bottom side of the shell 3. The filter 5 is blown and cleaned in all directions to effectively remove the dust adsorbed on the outside of the filter 5, thereby ensuring the continuous and effective operation of the filter 5.

[0031] The model of the fire detector body 1 is: YG-09;

[0032] The model of fan 62 is: WM5040-24VDC-70W;

[0033] The model of the timing switch 64 is: KG316T.

[0034] Working principle: install the self-tapping screws 2 at the bottom of the ceiling, use the fire detector body 1 to install it at the bottom of the ceiling, and then connect the fire detector body 1, the fan 62, the stepper motor 63 and the timing switch 64 to the municipal power supply respectively. When the fire detector body 1 is in use, the smoke generated by the external fire enters through the filter 5 on one side of the air inlet slot 4 around the bottom of the shell 3. When the sensitive element inside the fire detector body 1 detects the smoke, it converts the smoke signal into an electrical signal and actively prompts the relevant personnel that a fire has occurred at this time;

[0035] In daily use, the air inlet slots 4 provided around the bottom of the housing 3 are provided with a filter 5, which can effectively prevent external impurities such as flying insects and dust from entering the fire detector body 1, thereby protecting the sensitive components inside the fire detector body 1 from pollution. The fire detector body 1 can more accurately detect and identify fire-related signals such as smoke and temperature, reduce the possibility of false alarms, and improve the accuracy of fire detection;

[0036] The timing switch 64 sets the time point for back-blowing and cleaning the filter 5. At this time, the timing switch 64 controls the stepper motor 63 and the fan 62 to start working. When the stepper motor 63 is working, the output shaft of the stepper motor 63 drives the first rotating shaft 66 and the second rotating shaft 69 to rotate respectively. When the first rotating shaft 66 rotates, the multiple air inlet holes 613 and the air jet holes 67 rotate accordingly. When the fan 62 is working, the external air is transported to the inside of the air storage chamber 610 through the air outlet pipe 68. At this time, the external gas enters the inner side of the air delivery groove 612 through the air inlet hole 613, and the gas is transported to the air jet hole 67 through the air delivery groove 612. On the inside, the jet hole 67 sprays gas, and the gas blows and cleans the filter 5, and blows off the dust adsorbed on the outside of the filter 5. The stepper motor 63 drives the first rotating shaft 66 and the second rotating shaft 69 to rotate, so that the multiple air inlet holes 613 and the jet holes 67 rotate accordingly. Combined with the work of the fan 62, the outside air can be transported into the air storage chamber 610 and sprayed out through the jet hole 67 to blow and clean the filter 5 in all directions, effectively removing the dust adsorbed on the outside of the filter 5, ensuring the continuous and effective operation of the filter 5, and then ensuring the stability of the fire detector body 1 during operation.

[0037] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

Claims

1. A fire detector, comprising a fire detector body (1), characterized in that: A self-tapping screw (2) is installed on the top of the fire detector body (1), a shell (3) is installed on the bottom of the fire detector body (1), a plurality of air inlet slots (4) are arranged on the outside of the shell (3), a filter screen (5) is installed on the inner wall of the air inlet slot (4), and a cleaning component (6) is arranged on one side of the filter screen (5); The cleaning assembly (6) comprises a fixing frame (61) and a supporting rod (65), a timing switch (64) and a stepping motor (63) are respectively mounted on one side of the supporting rod (65), a second rotating shaft (69) is fixed to the output shaft end of the stepping motor (63), an air storage chamber (610) is provided inside the fixing frame (61), a first rotating shaft (66) is rotatably connected to the bottom of the inner wall of the housing (3) via a sealed bearing, and a plurality of air injection holes (67) are provided on the outer side of the first rotating shaft (66).

2. A fire detector according to claim 1, characterized in that: The outer sides of the first rotating shaft (66) and the second rotating shaft (69) are both rotatably connected to one side of the fixing frame (61) via sealed bearings. An air delivery groove (612) is provided inside the first rotating shaft (66), and the air delivery groove (612) is connected to the air injection hole (67).

3. A fire detector according to claim 2, characterized in that: An air inlet hole (613) is provided on the inner wall of the air delivery groove (612), and the air inlet hole (613) is communicated with the air storage chamber (610). The bottom of the first rotating shaft (66) is fixed to the top axis of the second rotating shaft (69).

4. A fire detector according to claim 3, characterized in that: A first limiting ring (611) and a second limiting ring (614) are respectively fixed to the outside of the first rotating shaft (66); one side of the first limiting ring (611) and the second limiting ring (614) are slidably connected to the inner wall of the air storage cavity (610).

5. A fire detector according to claim 4, characterized in that: A fan (62) is installed on one side of the stepping motor (63); the air outlet end of the fan (62) is connected to an air outlet pipe (68); and the air outlet end of the air outlet pipe (68) is connected to the air storage chamber (610).

6. A fire detector according to claim 5, characterized in that: The electrical output end of the timing switch (64) is connected to the input ends of the stepping motor (63) and the fan (62) respectively, and the air injection hole (67) is located at the inner center of the housing (3).

7. A fire detector according to claim 1, characterized in that: The top of the fixing frame (61) is fixed to the center of the bottom of the shell (3), and the top of the supporting rod (65) is fixed to one side of the bottom of the shell (3).

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