CN213023122U - Household gas alarm with replaceable filter screen - Google Patents
Household gas alarm with replaceable filter screen Download PDFInfo
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- CN213023122U CN213023122U CN202021071013.5U CN202021071013U CN213023122U CN 213023122 U CN213023122 U CN 213023122U CN 202021071013 U CN202021071013 U CN 202021071013U CN 213023122 U CN213023122 U CN 213023122U
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- filter screen
- gas
- circuit board
- front shell
- gas alarm
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Abstract
Domestic gas alarm of removable filter screen relates to measuring instrument technical field. The utility model consists of five parts of a rubber plug, a filter screen, a front shell, a circuit board and a rear shell; the gas sensor of the gas alarm is protected by the filter screen, the filter screen is sleeved on the gas sensor on the circuit board of the domestic gas alarm through the filter screen mounting hole, and the filter screen is fixed by the filter screen positioning pin; the front side of the filter screen is closed through the rubber plug and is closed with the front shell of the gas alarm, so that the indoor gas can be contacted with a gas sensor of the gas alarm after passing through the air hole of the gas alarm and passing through the filter screen again; in order to facilitate the replacement of the filter screen, the rubber plug is opened by using the arc-shaped groove of the front shell of the gas alarm. The utility model discloses an use the life that has prolonged domestic gas alarm, simple structure easily promotes on a large scale.
Description
Technical Field
The utility model relates to a measuring instrument technical field.
Background
Along with the implementation and popularization of the policy of 'changing coal into gas' in various parts in recent years, the use of fuel gas by residents in China is more and more popular, and the position of a household fuel gas alarm in fuel gas civil precaution engineering is more and more important.
The gas leakage detector is a name commonly used in engineering, and can also be called a gas alarm, a gas detector, a combustible gas detector and the like. Its main function is to detect whether the gas body leaks, and the gas is the combustible gas. Common fuel gases include liquefied petroleum gas, artificial gas, natural gas, and the like. The household gas alarm is a main detection device for household gas leakage, is installed in places where gas leakage is likely to occur, and can effectively reduce safety accidents by detecting gas leakage and sending alarm prompts. In the household gas alarm, the core original component for detecting gas leakage is a gas sensor, the detection mode is that the gas sensor is exposed in the gas environment for detection, however, due to the particularity of the environments such as a kitchen, a restaurant and the like, which are rich in water mist, rich in oil smoke and the like, oil stains and the like are easy to be attached to the surface of the gas sensor when the household gas alarm is used for a long time, the sensitivity and the service life of the gas sensor are reduced, and even false alarm or no alarm can be caused to the household gas alarm.
The prior art of application:
domestic gas alarm's circuit board: the mature product provider of the universal household gas alarm circuit board integrating the gas sensor, the battery pack and the audible and visual alarm module comprises: henan Ching electric company, Shenzhen Shang Sheng Gaokao electronics company, and Beijing Nangxing network communication technology company.
At present, the household gas alarm on the market adopts the same structural design as the industrial gas alarm, the use in the environment with high oil pollution is not considered, only the principle of oil pollution source installation is specified in a use specification, but in the actual use, the kitchen of a household is generally small, even if the kitchen is a large kitchen with the size of 20 square meters, the long-term pollution of the oil pollution cannot be avoided when the kitchen is placed at the position of the most principle cooking bench, so the service life is usually two years, and the drift amount of the alarm needs to be calibrated every year.
In view of the deficiency of the prior art, the utility model provides a household gas alarm with a replaceable filter screen, wherein a gas sensor of the gas alarm is protected by the filter screen, the filter screen is sleeved on the gas sensor on a circuit board of the household gas alarm through a filter screen mounting hole, and the filter screen is fixed by a filter screen positioning pin; the front side of the filter screen is closed through the rubber plug and is closed with the front shell of the gas alarm, so that the indoor gas can be contacted with a gas sensor of the gas alarm after passing through the air hole of the gas alarm and passing through the filter screen again; in order to facilitate the replacement of the filter screen, the rubber plug is opened by using the arc-shaped groove of the front shell of the gas alarm. The utility model discloses an use the life that has prolonged domestic gas alarm, simple structure easily promotes on a large scale.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the filter screen replaceable household gas alarm comprises five parts, namely a rubber plug, a filter screen, a front shell, a circuit board and a rear shell;
the front shell is provided with a filter screen mounting hole, a filter screen positioning pin is arranged in the filter screen mounting hole, an arc-shaped groove is formed in the edge of the filter screen mounting hole, and the front shell is provided with an air vent;
the circuit board is arranged on the rear shell, and the gas sensor on the circuit board is positioned at the position corresponding to the filter screen mounting hole of the front shell when the front shell and the rear shell are closed;
the filter screen is a hollow cylindrical metal screen and is arranged in a filter screen mounting hole of the front shell; the filter screen positioning foot on the front shell is responsible for positioning the filter screen;
when the front shell and the rear shell with the circuit board placed therein are closed, the gas sensor on the circuit board is positioned in the filter screen after the filter screen is installed;
the rubber plug is arranged at the mounting hole of the filter screen of the front shell, and the rubber plug is attached to the filter screen and fixes the filter screen on the positioning pin of the filter screen when the rubber plug is arranged after the filter screen is arranged; the rubber plug is opened through the arc-shaped groove of the front shell, and the rubber plug is opened to facilitate replacing the filter screen;
the circuit board is integrated with a gas sensor.
Advantageous effects
The utility model adds a layer of filter screen at the gas sensor to filter the gas; the structure design is ingenious, the fixing mode of the filter screen is stable, and the assembly and use process is simple and easy to operate; because the filter screen self low price, through regularly changing the filter screen of gas sensor department, reduce the cover of oil gas greasy dirt to gas sensor surface, can effectively increase of service life, reach the effect of effectively practicing thrift user's cost.
Drawings
Fig. 1 is an exploded view of the present invention;
FIG. 2 is a front housing structure diagram;
FIG. 3 is a schematic diagram of a circuit board structure;
FIG. 4 is a schematic structural view of the rear housing;
illustration of the drawings
1 is a rubber plug, 2 is a filter screen, 3 is a front shell, 4 is a circuit board, and 5 is a rear shell;
31 is a bolt column; 32 is an indicator lamp mounting hole; 33 is a breather hole; 34 is a filter screen mounting hole; 341 is a filter screen positioning pin; 342 is an arc-shaped groove; 35 is a speaker hole;
41 is a mounting through hole; 42 is an indicator light; 43 is a gas sensor; 44 is a speaker;
51 is an installation positioning column; 52 is a hanging hole; 511 is a positioning table.
Detailed Description
Example one
The filter screen replaceable household gas alarm is realized by referring to fig. 1 to 4, and is characterized in that the filter screen replaceable household gas alarm consists of a rubber plug 1, a filter screen 2, a front shell 3, a circuit board 4 and a rear shell 5; the circuit board 4 is placed on the rear case 5; the rear shell 5, the circuit board 4 and the front shell 3 are fixedly connected by penetrating bolts into the rear shell 5;
the rubber stopper 1 is arranged at the filter screen mounting hole 34 of the front shell 3 and can be opened at any time as required, so that the filter screen 2 at the gas sensor 43 can be conveniently replaced;
the filter screen 2 is a metal screen which is hollow and cylindrical, is arranged in the filter screen mounting hole 34 of the front shell 3 and is positioned and mounted at the gas sensor 43 by the filter screen positioning pin 341;
a threaded column 31 for connecting the circuit board 4 and the rear shell 5 is arranged in the shell of the front shell 3, an alarm indicator lamp mounting hole 32 is arranged at the upper end of the outer surface of the front shell 3, a filter screen mounting hole 34 is arranged at the position where the left lower end of the surface of the front shell is matched with the gas sensor 43 on the circuit board 4, a filter screen positioning pin 341 is arranged in the filter screen mounting hole 34, an arc-shaped groove 342 is arranged along the edge of the filter screen mounting hole 34, so that a finger can conveniently lift the rubber plug 1 on the filter screen mounting hole 34, a loudspeaker hole 35 is arranged at the right side of the filter screen mounting hole 34, and air holes;
the circuit board 4 is provided with a mounting through hole 41 matched with the front shell 3 and the rear shell 5;
the indicator lamp 42 is mounted on the upper end of the circuit board 4;
the left end and the right end of the lower end plane of the circuit board 4 are respectively provided with a gas sensor 43 and an alarm 44;
the rear shell 5 is provided with a mounting positioning column 51 matched with the front shell 3 and the circuit board 4; the mounting positioning column 51 is a spiral through hole, and is also provided with a positioning table 511 for placing the mounting circuit board 4;
the top end face of the rear housing 5 is provided with a hanging hole 52.
Example two
1. The circuit board 4 is combined with the rear housing 5;
installing the circuit board and placing the circuit board 4 on the rear shell 5, installing the circuit board 4 on the installation positioning column 51 of the rear shell 5 by the installation through hole 41 on the circuit board, and positioning and installing the circuit board by the positioning table 511;
2. the front shell 3 is matched with the circuit board 4 for installation;
the indicator lamp mounting holes 32 of the front case 3 correspond to the indicator lamps 42 on the circuit board 4; the filter mounting hole 34 corresponds to the gas sensor 43, and the speaker hole 35 corresponds to the speaker 44;
3. the front shell 3, the circuit board 4 and the rear shell 5 are assembled and mounted;
a self-tapping bolt is penetrated through the outer surface end of the rear shell 5, further passes through the mounting through hole 41 of the circuit board 4 and is screwed into the bolt column 31 of the front shell 3;
4. installing a filter screen 2 and assembling a rubber plug 1;
putting the filter screen 2 on the installation fixing angle 341 after passing through the filter screen installation hole 34, plugging the rubber plug 1 into the filter screen installation hole 34 to seal the filter screen installation hole 34, and further completing the installation of the rubber plug 1;
5. when the gas sensor is used, combustible gas in the environment passes through the air holes 33 in a diffusion mode, oil gas is filtered by the filter screen 2, and the like and then reaches the gas sensor 43;
6. when filter screen 2 needs to be changed, open rubber buffer 1 in 342, take out filter screen 2 and change, fill in rubber buffer 1 after the change is accomplished, accomplish the change of filter screen 2.
Claims (1)
1. The household gas alarm with the replaceable filter screen is characterized by comprising five parts, namely a rubber plug, the filter screen, a front shell, a circuit board and a rear shell;
the front shell is provided with a filter screen mounting hole, a filter screen positioning pin is arranged in the filter screen mounting hole, an arc-shaped groove is formed in the edge of the filter screen mounting hole, and the front shell is provided with an air vent;
the circuit board is arranged on the rear shell, and the gas sensor on the circuit board is positioned at the position corresponding to the filter screen mounting hole of the front shell when the front shell and the rear shell are closed;
the filter screen is a hollow cylindrical metal screen and is arranged in a filter screen mounting hole of the front shell; the filter screen positioning foot on the front shell is responsible for positioning the filter screen;
when the front shell and the rear shell with the circuit board placed therein are closed, the gas sensor on the circuit board is positioned in the filter screen after the filter screen is installed;
the rubber plug is arranged at the mounting hole of the filter screen of the front shell, and the rubber plug is attached to the filter screen and fixes the filter screen on the positioning pin of the filter screen when the rubber plug is arranged after the filter screen is arranged; the rubber plug is opened through the arc-shaped groove of the front shell, and the rubber plug is opened to facilitate replacing the filter screen;
the circuit board is integrated with a gas sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021071013.5U CN213023122U (en) | 2020-06-12 | 2020-06-12 | Household gas alarm with replaceable filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021071013.5U CN213023122U (en) | 2020-06-12 | 2020-06-12 | Household gas alarm with replaceable filter screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213023122U true CN213023122U (en) | 2021-04-20 |
Family
ID=75493878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021071013.5U Active CN213023122U (en) | 2020-06-12 | 2020-06-12 | Household gas alarm with replaceable filter screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213023122U (en) |
-
2020
- 2020-06-12 CN CN202021071013.5U patent/CN213023122U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220420 Address after: 310052 No. 1186-1 Bin'an Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU INNOVER TECHNOLOGY Co.,Ltd. Address before: 100190 Room 101, office building 7, Zhongguancun South 2nd Street, Haidian District, Beijing Patentee before: BEIJING HANGXING NETWORKING CO.,LTD. |