CN-116794121-B - Detection device

CN116794121BCN 116794121 BCN116794121 BCN 116794121BCN-116794121-B

Abstract

A detection device includes a gas detection probe, a first housing, and a second housing. The gas detection probe comprises a detection part and a main body part, wherein the detection part comprises a thermistor, the main body part is provided with an inner cavity, the detection part is positioned in the inner cavity, a space is reserved between the detection part and the main body part, at least part of the main body part is positioned in the second shell, the first shell is positioned at the periphery of the gas detection probe and the second shell, and the gas detection probe and the second shell are both positioned in the first shell. Through set up the double-shell structure including first casing and second casing outside gas detection probe, can reduce the influence of external environment to gas detection probe, improve gas detection accuracy.

Inventors

ZHANG JIAJUN
HUANG LONGZHONG
CHENG DEZHI
YANG SHANHONG
ZHANG YUXIANG

Assignees

杭州三花研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20230202

Claims (8)

1. A detection device is characterized by comprising a gas detection probe, a first shell and a second shell, The gas detection probe comprises a detection part and a main body part, wherein the detection part comprises a thermistor, the main body part is provided with an inner cavity, the detection part is positioned in the inner cavity, and a space is reserved between the detection part and the main body part; At least part of the main body part is positioned in the second shell, the first shell is positioned at the periphery of the gas detection probe and the second shell, and the gas detection probe and the second shell are positioned in the first shell; The gas detection probe comprises a first detection probe and a second detection probe; The first detection probe comprises a first detection part and a first main body part, the first main body part is provided with a first cavity, the first cavity is in gaseous communication with the outside of the detection device, and the first detection part is positioned in the first cavity; the second detection probe comprises a second detection part and a second main body part, the second main body part is provided with a second cavity, the second cavity is not communicated with the outside of the detection device, and the second detection part is positioned in the second cavity; At least part of the first body portion is located within the second housing, at least part of the second body portion is located within the second housing; The second shell comprises a perforation part, at least part of the first body part is positioned in the containing cavity, and at least part of the second body part is positioned in the containing cavity; The first main body part is provided with an opening part, the opening part is provided with an opening, the opening penetrates through the first main body part, the opening part is positioned in the containing cavity, a space is reserved between the opening part and the perforation part, the opening is communicated with the first cavity and the containing cavity, and the perforation is communicated with the containing cavity and the outside of the detection device.
2. The gas detection device of claim 1, wherein the detection device comprises a detection module and a processing module, the detection module comprising the gas detection probe, the detection module and the processing module both being located within the first housing, at least a portion of the processing module being located outside of the second housing.
3. The detection apparatus according to claim 1, wherein: The first shell comprises a through hole part, the through hole part is provided with a through hole, the through hole penetrates through the first shell, and the through hole is communicated with the perforation and the outside of the detection device; The first cavity is communicated with the opening in a first mode, the opening is communicated with the cavity in a second mode, the cavity is communicated with the through hole in a third mode, the through hole is communicated with the through hole in a fourth mode, the through hole is communicated with the outside of the detection device in a fifth mode, and at least one of the first communication, the second communication, the third communication, the fourth communication and the fifth communication is in gas communication.
4. The detecting device according to claim 3, wherein the detecting device includes a waterproof and breathable film, and at least a part of the waterproof and breathable film is sandwiched between the perforated portion and the through-hole portion.
5. A test device as claimed in claim 3, wherein: The second shell comprises a first wall and a second wall, the first wall is connected with the second wall, the second wall circumferentially surrounds the accommodating cavity, the first wall is located at one end of the second wall along the height direction of the gas detection probe, the second wall and the gas detection probe are located at the same side of the first wall, and the first wall and the second wall are both provided with perforation portions.
6. The detection apparatus according to claim 1, wherein: The detection device comprises a circuit board, the gas detection probe is connected with the circuit board, and the circuit board is positioned at the periphery of the containing cavity; the first shell is an integral piece, the first shell is fixedly connected with the second shell, the first shell is fixedly connected with the circuit board, the second shell is tightly wrapped by the first shell, and the first shell is formed on the periphery of the second shell in an injection molding mode.
7. The detecting device according to claim 6, wherein the first housing includes a first housing portion and a second housing portion, and the first housing portion is connected to the second housing portion; the first shell part is positioned at the periphery of the second shell, the first shell part is in contact with at least part of the second shell, the second shell part is positioned at the periphery of the circuit board, and the second shell part is in contact with at least part of the circuit board; the first shell is mounted on the circuit board, and the first shell is formed by insert injection molding by taking the circuit board and the second shell as inserts.
8. The detection apparatus according to claim 1, wherein: The detection device comprises at least one of a temperature detection module, a humidity detection module and a pressure detection module, wherein at least one of the temperature detection module, the humidity detection module and the pressure detection module is located inside the second shell.

Description

Detection device Technical Field The application relates to the technical field of detection, in particular to a detection device. Background The detection device comprises a gas detection probe and a first shell body which is formed by integral injection molding, and the gas detection probe is accommodated in the first shell body. The gas detection probe comprises a thermistor, and gas detection is performed by utilizing the characteristic that the resistance value of the thermistor changes along with the temperature. Because the first shell has limited blocking effect on the gas detection probe and the external environment of the first shell, the external environment of the gas detection probe easily affects the gas detection probe, and the accuracy of gas detection is reduced. Therefore, there is a need for an improved structure of the detection device that reduces the impact of the external environment on the gas detection probe. Disclosure of Invention In order to solve the problems, the application provides a detection device with high gas detection accuracy. The application provides a detection device which comprises a gas detection probe, a first shell and a second shell, wherein the gas detection probe comprises a detection part and a main body part, the detection part comprises a thermistor, the main body part is provided with an inner cavity, the detection part is positioned in the inner cavity, a space is reserved between the detection part and the main body part, at least part of the main body part is positioned in the second shell, the first shell is positioned at the peripheries of the gas detection probe and the second shell, and the gas detection probe and the second shell are both positioned in the first shell. In the application, the gas detection probe comprises a detection part and a main body part, wherein the detection part comprises a thermistor, the detection part is positioned in an inner cavity of the main body part, at least part of the main body part is positioned in the second shell, and the gas detection probe and the second shell are both positioned in the first shell. According to the application, the double-shell structure comprising the first shell and the second shell is arranged outside the gas detection probe, so that the influence of the external environment on the gas detection probe can be reduced, and the gas detection accuracy is improved. Drawings FIG. 1 is a schematic diagram of a detection device according to an embodiment of the present application; FIG. 2 is an exploded view of a detection device according to one embodiment of the present application; FIG. 3 is a cross-sectional view of a gas detection probe and circuit board provided in one embodiment of the present application; FIG. 4 is a cross-sectional view of a detection device provided in one embodiment of the present application; FIG. 5 is an exploded view of a gas detection probe, mounting bracket and circuit board provided in one embodiment of the present application; FIG. 6 is a perspective view of a second housing provided in one embodiment of the present application; FIG. 7 is a perspective view of a second housing provided in one embodiment of the present application; FIG. 8 is a schematic diagram of a detection device according to another embodiment of the present application; FIG. 9 is an exploded view of a detection device according to another embodiment of the present application; FIG. 10 is a schematic diagram of the cooperation of a gas detection probe, a second housing and a circuit board provided in another embodiment of the present application; FIG. 11 is a cross-sectional view of a gas-sensing probe, a second housing, a circuit board, and a waterproof breathable membrane provided in another embodiment of the application; FIG. 12 is a schematic illustration of the cooperation of a gas-sensing probe, a second housing, a first housing, a waterproof breathable membrane and a circuit board provided in accordance with another embodiment of the present application; fig. 13 is a perspective view of a second housing provided in another embodiment of the present application; fig. 14 is a perspective view of a second housing provided in another embodiment of the present application; fig. 15 is a cross-sectional view of a second housing provided in another embodiment of the present application. Detailed Description For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings. It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. In the related art, the detecting device 1000 includes a detecting modul