Gas detector shell and gas detector

Abstract

The utility model discloses a gas detector shell and a gas detector, the gas detector shell comprises a shell body, one side of the shell body is provided with a formaldehyde detection port, an air quality detection port, a temperature and humidity detection port and a fan through hole; the air quality detection port and the temperature and humidity detection port are both arranged close to the formaldehyde detection port, and the formaldehyde detection port is arranged on one side of the fan through hole, and the formaldehyde detection port, the air quality detection port and the temperature and humidity detection port are arranged close to the fan through hole. The formaldehyde detection port, the air quality detection port and the temperature and humidity detection port can be ensured to obtain more uniform air flow distribution, and when the fan accelerates air flow, corresponding sensors arranged in the formaldehyde detection port, the air quality detection port and the temperature and humidity detection port can be more quickly and uniformly contacted with an air sample to be detected; therefore, the detection speed and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detection technical field especially relates to a gas detection appearance shell and gas detection appearance. BACKGROUND

[0002] With the enhancement of environmental protection consciousness and people's attention to indoor air quality, air detection instrument as an important environmental monitoring equipment, has been widely used in daily life, industrial production and scientific research field. The traditional air detection instrument generally only detects one detection index, but there are many harmful substances in the air, if only one-way detection air detection instrument cannot meet the needs of the existing life, therefore need multifunctional air detection instrument, carry out multifunctional detection function integration according to user demand.

[0003] However, although some multifunctional air detection instruments appear on the market, try to realize the synchronous monitoring of multiple air quality parameters by integrating multiple detection modules, but these devices need to set multiple detection modules for different pollutants in the detection instrument in order to realize multifunctional detection, each module usually needs to be equipped with corresponding through holes to allow air samples to enter. However, in the actual layout, these through holes are often scattered, and in order to accelerate airflow to improve detection efficiency, fans and other airflow driving devices are often included in the design.

[0004] Although the introduction of the fan enhances the airflow circulation and improves the overall detection speed to some extent, it also brings the problem of uneven airflow distribution. Due to the airflow dynamic effect produced by the fan, the through holes closer to the fan will get more airflow flowing through, thereby improving the sampling rate and response speed of the detection modules at these positions. On the contrary, the through holes far from the fan face the problem of insufficient sampling due to weakened airflow, which directly affects the detection efficiency and accuracy of these detection modules. SUMMARY

[0005] In order to overcome at least one of the defects of the prior art described above, the utility model provides a kind of gas detection instrument shell and gas detection instrument, which can solve the problem of reduced detection efficiency and accuracy caused by the dispersion of the through holes corresponding to each detection module.

[0006] The technical scheme adopted by the utility model to solve the problem is:

[0007] A kind of gas detection instrument shell, including shell body, one side of the shell body is provided with formaldehyde detection port, air quality detection port, temperature and humidity detection port and fan through hole, the air quality detection port and the temperature and humidity detection port are close to the formaldehyde detection port and are arranged, the formaldehyde detection port is located at one side of the fan through hole.

[0008] Further, the formaldehyde detection port, the air quality detection port and the temperature and humidity detection port are located on the same side of the fan through hole.

[0009] Further, the shell body comprises a display part and a holding part, the display part and the holding part are connected, the display part is provided with a display screen through hole for displaying a display screen, and the formaldehyde detection port, the air quality detection port, the temperature and humidity detection port and the fan through hole are arranged on the plate surface opposite to the display screen through hole of the display part.

[0010] Further, the top of the shell body is provided with an auxiliary air hole.

[0011] Further, the auxiliary air hole comprises a first auxiliary air hole and a second auxiliary air hole, the first auxiliary air hole is arranged on the upper side of the display screen through hole, and the second auxiliary air hole is arranged opposite to the first auxiliary air hole.

[0012] Further, the edge of the shell body is provided with a chamfer structure, and one or more of the air quality detection port, the temperature and humidity detection port, the first auxiliary air hole and the second auxiliary air hole are arranged on the chamfer structure.

[0013] Further, the holding part is provided with a key area, and the key area is provided with a key through hole for arranging a key.

[0014] Further, the inner wall of the shell body is provided with a baffle along the edge of the fan through hole for positioning the fan.

[0015] The utility model also provides a kind of gas detector, comprising

[0016] The gas detector shell described above;

[0017] Formaldehyde sensor, the formaldehyde sensor is arranged inside the shell body at the formaldehyde detection port, to detect the formaldehyde concentration in the air flowing through the formaldehyde sensor;

[0018] Air quality sensor, the air quality sensor is arranged inside the shell body at the air quality detection port, to detect the total volatile organic compound in the air flowing through the air quality sensor;

[0019] Temperature and humidity sensor, the temperature and humidity sensor is arranged inside the shell body at the temperature and humidity detection port, to detect the temperature and humidity value in the air flowing through the temperature and humidity sensor;

[0020] Fan, the fan is arranged inside the shell body at the fan through hole, to accelerate the air flow rate at the formaldehyde sensor, the air quality sensor and the temperature and humidity sensor.

[0021] A display screen is arranged inside the shell body, and the display screen is arranged at the display screen through hole;

[0022] A circuit board is arranged inside the shell body, and the formaldehyde sensor, the air quality sensor, the temperature and humidity sensor, the fan and the display screen are electrically connected with the circuit board.

[0023] Further, a key is arranged through the key through hole, and the key is in contact with the circuit board to activate the corresponding function of the circuit board.

[0024] In summary, the gas detector shell and the gas detector have the following technical effects:

[0025] 1. By arranging the formaldehyde detection port, the air quality detection port and the temperature and humidity detection port close to the fan through hole, it can ensure that the formaldehyde detection port, the air quality detection port and the temperature and humidity detection port can obtain more uniform airflow distribution. When the fan accelerates the air flow, the corresponding sensors arranged in the formaldehyde detection port, the air quality detection port and the temperature and humidity detection port can quickly and uniformly contact the air sample to be detected, thereby improving the detection speed and accuracy.

[0026] 2. The formaldehyde detection port, the air quality detection port, the temperature and humidity detection port and the fan through hole are arranged on the same surface of the shell body, so that the corresponding function modules (such as formaldehyde, air quality, temperature and humidity sensors and fans) arranged in the formaldehyde detection port, the air quality detection port, the temperature and humidity detection port and the fan through hole are concentrated on the same surface, which facilitates the design of the circuit board. More importantly, since the formaldehyde detection port, the air quality detection port, the temperature and humidity detection port and the fan through hole are concentrated in one area, the user is less likely to accidentally block any detection port when holding or placing the device, thereby reducing the possibility of inaccurate data collection due to blocking. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a front view structural schematic diagram of the utility model;

[0028] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0030] Figure 4 It is a first perspective view of the utility model;

[0031] Figure 5The second visual angle explosion structure schematic view of the utility model.

[0032] Wherein, the signification of sign is as follows: 1, the shell body; 11, the holding part; 111, the button area; 112, the button through-hole; 12, the display part; 121, the formaldehyde detection port; 122, the air quality detection port; 123, the temperature and humidity detection port; 124, the fan through-hole; 125, the display screen through-hole; 126, the first auxiliary air hole; 127, the second auxiliary air hole; 128, the baffle; 2, the formaldehyde sensor; 3, the air quality sensor; 4, the temperature and humidity sensor; 5, the fan; 6, the display screen; 7, the circuit board; 8, the button. DETAILED DESCRIPTION

[0033] For better understanding and implementation, the technical scheme in the embodiments of the utility model will be clearly and completely described and discussed below in combination with the drawings of the utility model, obviously, only a part of examples of the utility model are described here, and not all examples, based on the embodiments in the utility model, all other examples obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.

[0034] For the understanding of the embodiments of the utility model, the following will be further explained and described with specific embodiments as examples in combination with the drawings, and each embodiment does not constitute the limitation to the embodiments of the utility model.

[0035] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation to the utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing the specific embodiments and are not intended to limit the utility model.

[0037] Reference Figures 1-5The utility model discloses a gas detection instrument shell, including shell body 1, one side of shell body 1 is equipped with formaldehyde detection mouth 121, air quality detection mouth 122, temperature and humidity detection mouth 123 and fan through -hole 124, air quality detection mouth 122 and temperature and humidity detection mouth 123 are close to formaldehyde detection mouth 121 setting, and formaldehyde detection mouth 121 is located at one side of fan through -hole 124.

[0038] Specifically, one side of the shell body 1 is provided with a formaldehyde detection port 121, an air quality detection port 122, a temperature and humidity detection port 123 and a fan through-hole 124, the air quality detection port 122 and the temperature and humidity detection port 123 are arranged close to the formaldehyde detection port 121, and the formaldehyde detection port 121 is arranged on one side of the fan through-hole 124. Correspondingly, the formaldehyde sensor 2 arranged at the formaldehyde detection port 121, the air quality sensor 3 arranged at the air quality detection port 122, and the temperature and humidity sensor 4 arranged at the temperature and humidity detection port 123 are all close to the fan 5 arranged at the fan through-hole 124, thereby ensuring that the airflow can pass through each sensor relatively uniformly. Moreover, the formaldehyde detection port 121, the air quality detection port 122, the temperature and humidity detection port 123 and the fan through-hole 124 are all arranged on one side of the shell body 1, and the formaldehyde detection port 121, the air quality detection port 122 and the temperature and humidity detection port 123 are all arranged close to the fan through-hole 124, so that the user only needs to remember to avoid shielding this area, without the need to specially remember or pay attention to the specific positions of each individual detection port, thereby reducing the complexity of use and reducing the risk of misoperation.

[0039] As an option, the air quality detection port 122 and the temperature and humidity detection port 123 can be arranged on the two sides of the formaldehyde detection port 121. On the basis of this structure, the formaldehyde detection port 121 will form a convection with the air quality detection port 122 and the temperature and humidity detection port 123, increase the air flow, and thereby improve the measurement efficiency and accuracy.

[0040] Referring to Figure 2 In some embodiments, the formaldehyde detection port 121, the air quality detection port 122 and the temperature and humidity detection port 123 are all located on the same side of the fan through-hole 124.

[0041] Specifically, the formaldehyde detection port 121, the air quality detection port 122 and the temperature and humidity detection port 123 are all located on the same side of the fan through-hole 124, that is, the formaldehyde detection port 121, the air quality detection port 122 and the temperature and humidity detection port 123 are all in the airflow path in the same direction and close to the fan 5, which ensures that the air samples received by the corresponding sensors in the formaldehyde detection port 121, the air quality detection port 122 and the temperature and humidity detection port 123 have similar time delays, so that the different types of detection results have better time consistency, which is particularly important for comprehensive analysis of air quality.

[0042] See Figures 1-5 In some embodiments, the outer casing 1 includes a display section 12 and a grip section 11. The display section 12 is provided with a display screen through hole 125 for displaying the display screen 6. The formaldehyde detection port 121, the air quality detection port 122, the temperature and humidity detection port 123 and the fan through hole 124 are all provided on the plate surface of the display section 12 opposite to the display screen through hole 125.

[0043] Specifically, the outer casing 1 includes a display section 12 and a grip section 11, which are connected. The grip section 11 is designed for the user to hold, providing a comfortable grip experience. The display section 12 includes a display screen through-hole 125 for mounting and displaying the display screen 6, allowing the user to intuitively view the test results. Formaldehyde detection port 121, air quality detection port 122, temperature and humidity detection port 123, and fan through-hole 124 are all located on the panel surface of the display section 12 opposite to the display screen through-hole 125. Because the formaldehyde detection port 121, air quality detection port 122, temperature and humidity detection port 123, and fan through-hole 124 are located on the display section 12, when the user holds the device, their hand naturally grips the grip section 11 without touching the formaldehyde detection port 121, air quality detection port 122, temperature and humidity detection port 123, and fan through-hole 124 on the display section 12. This greatly reduces the risk of the detection port being blocked due to handheld devices, ensuring that airflow can pass smoothly through each sensor, thus improving the accuracy and reliability of the detection.

[0044] See Figures 4-5 In some embodiments, in order to enable gas detection even when the outer casing 1 is laid flat, an auxiliary ventilation hole is provided on the top of the outer casing 1. This allows for gas exchange between the inside and outside of the outer casing 1 even when one or more of the formaldehyde detection port 121, air quality detection port 122, temperature and humidity detection port 123, and fan vent 124 are blocked, thus enabling normal gas detection.

[0045] See Figures 4-5 Furthermore, the auxiliary vent includes a first auxiliary vent 126 and a second auxiliary vent 127. The first auxiliary vent 126 is located on the upper side of the display screen through hole 125, and the second auxiliary vent 127 is arranged opposite to the first auxiliary vent 126.

[0046] Specifically, the first auxiliary vent 126 is located on the upper side of the display screen through hole 125, and the second auxiliary vent 127 is arranged opposite to the first auxiliary vent 126. That is, both the first auxiliary vent 126 and the second auxiliary vent 127 are located on the top of the outer shell body 1, which is the top of the outer shell body 1. This part is the part of the outer shell body 1 that is least likely to be blocked, thus greatly reducing the occurrence of the first auxiliary vent 126 and the second auxiliary vent 127 being blocked at the same time.

[0047] In some embodiments, the edge of the outer casing 1 is provided with a chamfered structure, and one or more of the air quality detection port 122, temperature and humidity detection port 123, first auxiliary vent 126 and second auxiliary vent 127 are provided on the chamfered structure.

[0048] Specifically, in the design of the outer shell body 1, a chamfered structure is usually set along the edge of the outer shell body 1 to improve the grip. Based on the chamfered structure on the edge of the outer shell body 1, one or more of the air quality detection port 122, temperature and humidity detection port 123, first auxiliary vent 126 and second auxiliary vent 127 can be set on the chamfered structure. This allows the air quality detection port 122, temperature and humidity detection port 123, first auxiliary vent 126 and second auxiliary vent 127 to still be able to complete the gas exchange between the inside and outside of the outer shell body 1 when it is laid flat. This further prevents the possibility of the air quality detection port 122, temperature and humidity detection port 123, first auxiliary vent 126 and second auxiliary vent 127 being accidentally blocked.

[0049] See Figure 1 , Figures 4-5 In some embodiments, the grip portion 11 is provided with a button area 111, and the button area 111 is provided with a button through hole 112 for setting the button 8.

[0050] Specifically, the button area 111 is located on the grip portion 11 of the outer casing 1, making it easy for users to access when holding the device. The button area 111 can be provided with multiple button through holes 112, which are used to install physical buttons 8 or touch buttons 8, ensuring that users can perform various operations and settings through the buttons 8.

[0051] See Figures 4-5 In some embodiments, the inner wall of the housing body 1 is provided with a baffle 128 along the edge of the fan through hole 124 for positioning the fan 5.

[0052] Specifically, the baffle 128 is located on the inner wall of the shell body 1 and is arranged along the edge of the fan through hole 124 to position the subsequently installed fan 5. The baffle 128 provides a clear installation positioning reference, so that the fan 5 can be accurately installed in place. It not only reduces the possibility of human error in the assembly process, but also greatly simplifies the assembly steps and improves production efficiency. Moreover, the fan 5 will vibrate during operation, and long-term accumulation may cause the fan 5 to shift or loosen, affecting its electrical connection points and performance and even causing failure. The baffle 128 acts as a physical support to effectively resist, absorb and disperse these vibrations, reducing the risk of displacement of the fan 5 due to vibration.

[0053] Referring to Figures 1-2 In some embodiments, the width of the display portion 12 is greater than the width of the holding portion 11.

[0054] Specifically, the width of the display portion 12 is greater than the width of the holding portion 11, that is, the width of the display portion 12 is wider to provide a larger display screen 6, which can facilitate users to more clearly obtain the display information in the display screen 6 and facilitate the arrangement of multiple sensors. The width of the holding portion 11 is narrower so that users can easily hold it, and on the basis of holding, the fingers can also freely click the keys 8.

[0055] Referring to Figures 4-5 The utility model also provides a kind of gas detector, including formaldehyde sensor 2, air quality sensor 3, temperature and humidity sensor 4, fan 5, display screen 6 and circuit board 7 and above-mentioned gas detector shell, formaldehyde sensor 2 is located at the inside of shell body 1 at formaldehyde detection port 121, to detect the formaldehyde concentration in the air flowing through formaldehyde sensor 2. Air quality sensor 3 is located at the inside of shell body 1 at air quality detection port 122, to detect the total volatile organic compounds in the air flowing through air quality sensor 3. Temperature and humidity sensor 4 is located at the inside of shell body 1 at temperature and humidity detection port 123, to detect the temperature and humidity value in the air flowing through temperature and humidity sensor 4. Fan 5 is located at the inside of shell body 1 at fan through hole 124, to accelerate the air flow rate at formaldehyde sensor 2, air quality sensor 3 and temperature and humidity sensor 4. Display screen 6 is located inside shell body 1, and display screen 6 is located at display screen through hole 125. Circuit board 7 is located inside shell body 1, formaldehyde sensor 2, air quality sensor 3, temperature and humidity sensor 4, fan 5 and display screen 6 are electrically connected with circuit board 7.

[0056] As optional, the formaldehyde sensor 2 can adopt a sensor of electrochemical principle to detect formaldehyde, and the formaldehyde sensor 2 of electrochemical principle has good selectivity and stability. When the formaldehyde gas molecules contact with the sensitive material of the sensor, oxidation or reduction reaction occurs on the electrode surface, and current change is generated. The current change is proportional to the concentration of formaldehyde gas, and the concentration of formaldehyde in the air can be determined by measuring the size of the current. Of course, other principles of formaldehyde sensor 2 can also be selected according to the requirements, which can detect formaldehyde, and are not limited here.

[0057] As optional, the air quality sensor 3 is used for detecting organic pollution TVOC in the air, and the TVOC (Total Volatile Organic Compounds) refers to the organic matter with the saturated vapor pressure exceeding 133.32 Pa at room temperature, the boiling point being 50-250 DEG C, and being in the form of evaporation at normal temperature. The TVOC is a general term of various volatile organic compounds, which may have effects on human health, such as skin and mucous membrane irritation, toxicity, carcinogenicity, etc. Of course, other detection elements for detecting other substances affecting air quality can also be selected, such as PM2.5, etc., and are not limited here.

[0058] Referring to Figures 4-5 Further, the gas detector further comprises a button 8, the button 8 is arranged through the button through hole 112, and the button 8 is in contact with the circuit board 7, so as to activate the corresponding function of the circuit board 7. The button through hole 112 facilitates the arrangement of the button 8 through the button through hole 112, and facilitates the contact between the button 8 and the circuit board 7 in the shell body 1, so as to activate the corresponding function of the circuit board 7 by pressing the circuit board 7, such as the on-off key, the menu key, the mode switching key, etc., and the activation of the normal operation logic function of the air detector is not limited here.

[0059] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements are also considered as the protection scope of the utility model.

Claims

1. A gas detector housing, characterized in that, The device includes a housing body (1), one side of which is provided with a formaldehyde detection port (121), an air quality detection port (122), a temperature and humidity detection port (123), and a fan through hole (124). The air quality detection port (122) and the temperature and humidity detection port (123) are both located close to the formaldehyde detection port (121), and the formaldehyde detection port (121) is located on one side of the fan through hole (124).

2. The gas detector housing according to claim 1, characterized in that, The formaldehyde detection port (121), the air quality detection port (122), and the temperature and humidity detection port (123) are all located on the same side of the fan through hole (124).

3. The gas detector housing according to claim 1, characterized in that, The outer shell body (1) includes a display part (12) and a grip part (11). The display part (12) and the grip part (11) are connected. The display part (12) is provided with a display screen through hole (125) for displaying the display screen (6). The formaldehyde detection port (121), the air quality detection port (122), the temperature and humidity detection port (123) and the fan through hole (124) are all provided on the plate surface of the display part (12) opposite to the display screen through hole (125).

4. The gas detector housing according to claim 3, characterized in that, The top of the outer shell body (1) is provided with an auxiliary ventilation hole.

5. The housing of a gas detector according to claim 4, characterized in that, The auxiliary ventilation holes include a first auxiliary ventilation hole (126) and a second auxiliary ventilation hole (127). The first auxiliary ventilation hole (126) is located on the upper side of the display screen through hole (125), and the second auxiliary ventilation hole (127) is arranged opposite to the first auxiliary ventilation hole (126).

6. The gas detector housing according to claim 5, characterized in that, The outer shell body has a chamfered structure on its edge, and one or more of the air quality detection port (122), the temperature and humidity detection port (123), the first auxiliary vent (126) and the second auxiliary vent (127) are provided on the chamfered structure.

7. The gas detector housing according to claim 4, characterized in that, The grip (11) is provided with a button area (111), and the button area (111) is provided with a button through hole (112) for setting the button (8).

8. A gas detector housing according to any one of claims 1-7, characterized in that, The inner wall of the outer casing (1) is provided with a baffle (128) along the edge of the fan through hole (124) for positioning the fan (5).

9. A gas detector, characterized in that, include Gas detector housing as described in any one of claims 1-8; A formaldehyde sensor (2) is disposed inside the housing body (1) at the formaldehyde detection port (121) for detecting the formaldehyde concentration in the air flowing through the formaldehyde sensor (2); An air quality sensor (3) is disposed inside the housing body (1) at the air quality detection port (122) for detecting total volatile organic compounds in the air flowing through the air quality sensor (3); Temperature and humidity sensor (4), the temperature and humidity sensor (4) is disposed inside the housing body (1) at the temperature and humidity detection port (123) for detecting the temperature and humidity values ​​in the air flowing through the temperature and humidity sensor (4); A fan (5) is located inside the housing body (1) at the fan through hole (124) to accelerate the airflow at the formaldehyde sensor (2), the air quality sensor (3) and the temperature and humidity sensor (4); The display screen (6) is located inside the outer shell body (1) and is located at the display screen through hole (125); The circuit board (7) is located inside the outer casing (1). The formaldehyde sensor (2), the air quality sensor (3), the temperature and humidity sensor (4), the fan (5), and the display screen (6) are all electrically connected to the circuit board (7).

10. A gas detector according to claim 9, characterized in that, It also includes a button (8) which is disposed through the button through hole (112) and contacts the circuit board (7) to activate the corresponding function of the circuit board (7).

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