Air inlet structure of fire detector

Abstract

The utility model discloses an air inlet structure of a fire detector, which comprises a body, an air inlet pipe, an air outlet pipe, an air guide assembly and a filter assembly, and is characterized in that the air inlet pipe and the air outlet pipe are respectively arranged at the top and the bottom of the body, the air guide assembly is arranged in the body, and a positioning opening for quickly disassembling and assembling the filter assembly is formed in the body. The filtering assembly is connected with the body through the positioning opening. Through the implementation of the utility model, the filter assembly and the body can be quickly disassembled and assembled through the structural cooperation, so that the problem of inconvenience in disassembly and cleaning caused by the integral structure of the air pump, the filter and the smoke detection cavity is avoided, and the smoke detection device is relatively high in practicability and has certain use value and popularization value.

Description

Technical Field

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

[0002] Aspirating fire alarm detectors are also called air sampling fire detectors and very early fire detector alarm systems. This type of detector has very high sensitivity. Air sampling fire detectors can be divided into single-tube, double-tube, and four-tube (multi-tube) types. Different specifications of air sampling fire detectors are selected according to different environmental requirements. Aspirating smoke fire detectors have four working stages, namely warning, action, fire alarm 1, and fire alarm 2. They generally have the following characteristics: the most sensitive detection capability (can detect the existence of fire hours before smoke) the most advanced fire detection method is suitable for any environment (aspirating air sampling); the lowest maintenance cost (maintenance cost is almost negligible) will never be affected by any environmental factors to cause false alarms; the most stable system tested by many owners.

[0003] 2. Passive detection can only detect a fire when smoke billows. But by then it is too late.

[0004] 3. The false alarm rate is high and it is easily affected by dust and humidity in the air.

[0005] A Chinese patent for an aspirated smoke fire detector (application number CN201620916769.2, application date 2016-08-22) reduces production costs and also reduces space occupied by integrating an air pump, a filter, and a smoke detection chamber; the laser emission source used can suppress the influence of environmental dust and improve alarm sensitivity and reliability; the filter may be clogged after long-term use and needs to be replaced regularly to ensure that the detector operates well; however, the air pump, the filter, and the smoke detection chamber are integrated into a structure, and the filter is more troublesome to disassemble and clean.

[0006] In summary, a fire detector air intake structure is needed to solve the deficiencies in the prior art. Utility Model Content

[0007] In view of the deficiencies of the prior art, the utility model provides an air intake structure for a fire detector, aiming to solve the problem that it is troublesome to disassemble and clean the filter.

[0008] To achieve the above purpose, the utility model provides the following technical solutions: a fire detector air intake structure, including a body, an air intake pipe, an air outlet pipe, an air guide assembly and a filter assembly, characterized in that the air intake pipe and the air outlet pipe are respectively arranged at the top and bottom of the body, the air guide assembly is arranged inside the body, and a positioning port for quick disassembly and assembly of the filter assembly is provided on the body, and the filter assembly is connected to the body through the positioning port. The filter assembly can be quickly disassembled and assembled through the structural coordination of the filter assembly and the body, thereby avoiding the problem of inconvenience in disassembly and cleaning caused by the vacuum pump, filter, and smoke detection chamber being arranged as an integrated structure, and the utility model is relatively strong.

[0009] Optionally, a filter cavity for communicating with the positioning port is further provided inside the main body, and the filter cavity cooperates with the filter assembly to filter impurities input from the air intake pipe.

[0010] Optionally, the filter assembly includes an outer shell, an inner frame and a filter element, the outer shell is connected to the inner frame, the filter element is installed on the inner frame, the inner frame is provided with a sliding mechanism for slidingly connecting the filter cavity, and the filter assembly is adjusted on the main body by the sliding mechanism, so as to facilitate disassembly of the filter element for cleaning or replacement.

[0011] Optionally, two air inlet pipes are provided, the two air inlet pipes are symmetrically arranged on the top of the main body, and the two air inlet pipes are both connected to the filter cavity.

[0012] Optionally, the bottom end of the filter cavity is communicated with an air guide component, and one end of the air guide component away from the filter cavity is connected to a detection cavity equipped with a smoke detector.

[0013] Optionally, the air guide component includes a fan, a first air guide pipe, a second air guide pipe and a wind speed sensor, the air inlet end of the fan is connected to the filter cavity through the first air guide pipe, and the air outlet end of the fan is connected to the detection cavity through the second air guide pipe.

[0014] Optionally, the first air duct is a Y-shaped structure, and the two air flows are conveniently introduced into the fan at the same time through the first air duct of the Y-shaped structure, and then the fan cooperates with the second air duct to output them to the detection chamber.

[0015] Beneficial effects of the utility model:

[0016] 1. In the utility model, the filter assembly can be quickly disassembled and assembled by cooperating with the structure of the body, thereby avoiding the problem of inconvenience in disassembly and cleaning caused by the vacuum pump, filter, and smoke detection chamber being set as an integrated structure, and the utility model is strong;

[0017] 2. In the utility model, the filter assembly is composed of an outer shell, an inner frame and a filter element, and the filter assembly is adjusted on the main body by a sliding mechanism, so that the filter element can be disassembled for cleaning or replacement, which has certain use value and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the main cross-section of the structure of the utility model.

[0021] Figure 3 for Figure 2 Enlarged schematic diagram of the structure of part A in the middle.

[0022] In the figure: 1-main body, 11-positioning port, 12-filter cavity, 121-positioning block; 2-inlet pipe, 3-outlet pipe, 4-air guide assembly, 41-fan, 42-first air guide pipe, 43-second air guide pipe; 5-filter assembly, 51-outer shell, 52-inner frame, 521-slider, 53-filter element; 6-detection cavity, 7-sealing pad. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0025] like Figure 1 , Figure 2 As shown, a fire detector air intake structure includes a main body 1, an air inlet pipe 2, an air outlet pipe 3, an air guide assembly 4 and a filter assembly 5, characterized in that the air inlet pipe 2 and the air outlet pipe 3 are respectively arranged at the top and the bottom of the main body 1, the air guide assembly 4 is arranged inside the main body 1, a positioning port 11 for quickly disassembling and assembling the filter assembly 5 is opened on the main body 1, the filter assembly 5 is connected to the main body 1 through the positioning port 11, and a filter cavity 12 for communicating with the positioning port 11 is also provided inside the main body 1, the filter assembly 5 includes an outer shell 51, an inner frame 52 and a filter element 53, the outer shell 51 is connected to the inner frame 52, the filter element 53 is installed on the inner frame 52, and the inner frame 52 is slidably connected to the filter cavity 12 through a sliding mechanism.

[0026] A sealing strip is provided at the connection between the positioning opening 11 and the outer shell 51 to prevent gas leakage from the filter cavity 12 .

[0027] Two air inlet pipes 2 are provided, and the two air inlet pipes 2 are symmetrically arranged on the top of the main body 1, and the two air inlet pipes 2 are both connected to the filter cavity 12. Gas samples in different areas are collected through the two air inlet pipes 2 to improve the detection efficiency.

[0028] The bottom end of the filter cavity 12 is connected to the air guide component 4, and one end of the air guide component 4 away from the filter cavity 12 is connected to the detection cavity 6 equipped with a smoke detector.

[0029] The air guide assembly 4 includes a fan 41, a first air guide duct 42, a second air guide duct 43 and a wind speed sensor 44. The air inlet end of the fan 41 is connected to the filter cavity 12 through the first air guide duct 42, and the air outlet end of the fan 41 is connected to the detection cavity 6 through the second air guide duct 43. The first air guide duct 42 is a Y-shaped structure. The Y-shaped first air guide duct 42 facilitates the simultaneous introduction of two air flows into the fan 31, and then the fan 31 cooperates with the second air guide duct 43 to output them to the detection cavity 6.

[0030] like Figure 3 As shown, the sliding mechanism includes a slider 521 and a positioning block 121, the slider 521 is arranged on the inner frame 52, the positioning block 121 is arranged on the left and right inner walls of the filter cavity 12, and the positioning block 121 is provided with a sliding groove for adapting the slider 521, and a sealing gasket 7 is also provided between the positioning block 121 and the slider 521. The filter cavity 12 is slidably connected through the sliding mechanism, and the structural design is simple and reasonable, and the development and design cost is relatively low.

[0031] Working principle of the utility model: when in use, the filter assembly 5 composed of the outer shell 51, the inner frame 52 and the filter element filter element filters the gas inside the filter cavity 12, and the filter assembly is adjusted in the body through the sliding mechanism, specifically, the sliders 521 provided at the two ends of the inner frame slide with the slide grooves provided on the positioning block 121 to facilitate the removal of the filter assembly 5, and then the filter element 53 can be cleaned or replaced, and the structure of the filter assembly 5 and the main body 1 can be quickly disassembled and assembled, thereby avoiding the problem of inconvenience in disassembly and cleaning caused by the vacuum pump, filter (filter assembly 5) and smoke detection chamber being arranged as an integrated structure.

[0032] It should be noted that the preferred implementation methods of the utility model are given in the specification and drawings of the utility model. However, the utility model can be implemented in many different forms and is not limited to the implementation methods described in the specification. These implementation methods are not used as additional restrictions on the content of the utility model. The purpose of providing these implementation methods is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various implementation methods not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A fire detector air intake structure, comprising a body (1), an air intake pipe (2), an air outlet pipe (3), an air guide component (4) and a filter component (5), characterized in that: The air inlet pipe (2) and the air outlet pipe (3) are respectively arranged at the top and bottom of the main body (1); the air guide assembly (4) is arranged inside the main body (1); a positioning opening (11) for quickly disassembling and assembling the filter assembly (5) is provided on the main body (1); the filter assembly (5) is connected to the main body (1) via the positioning opening (11).

2. The air intake structure of a fire detector according to claim 1, characterized in that: A filter cavity (12) for communicating with the positioning port (11) is also provided inside the body (1).

3. The air intake structure of a fire detector according to claim 2, characterized in that: The filter assembly (5) comprises an outer shell (51), an inner frame (52) and a filter element (53); the outer shell (51) is connected to the inner frame (52); the filter element (53) is mounted on the inner frame (52); and the inner frame (52) is provided with a sliding mechanism for slidingly connecting to the filter cavity (12).

4. The air intake structure of a fire detector according to claim 3, characterized in that: Two air inlet pipes (2) are provided, and the two air inlet pipes (2) are symmetrically arranged at the top of the main body (1), and the two air inlet pipes (2) are both connected to the filter cavity (12).

5. The air intake structure of a fire detector according to claim 4, characterized in that: The bottom end of the filter cavity (12) is connected to the air guide component (4), and one end of the air guide component (4) away from the filter cavity (12) is connected to a detection cavity (6) equipped with a smoke detector.

6. The air intake structure of a fire detector according to claim 5, characterized in that: The air guide component (4) comprises a fan (41), a first air guide pipe (42), a second air guide pipe (43) and a wind speed sensor (44); an air inlet end of the fan (41) is connected to the filter cavity (12) via the first air guide pipe (42), and an air outlet end of the fan (41) is connected to the detection cavity (6) via the second air guide pipe (43).

7. The air intake structure of a fire detector according to claim 6, characterized in that: The first air guide tube (42) is a Y-shaped structure.

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