Formaldehyde tester

Abstract

The utility model provides a formaldehyde tester. The formaldehyde tester comprises a shell assembly, a machine core plate, a fan assembly and a power supply assembly, the shell assembly comprises an upper shell and a lower shell, the upper shell is detachably connected to the lower shell, and the upper shell and the lower shell define a detection cavity and an air inlet channel and an air outlet channel which are communicated with the detection cavity; the machine core plate is arranged in the detection cavity, is fixedly connected to the lower shell and is used for acquiring the formaldehyde concentration; the fan assembly is arranged in the detection cavity and fixedly connected to the lower shell so as to be used for guiding the flow direction from the air inlet channel to the air outlet channel in the detection cavity. The power supply assembly is arranged on the shell assembly and electrically connected with the machine core plate so as to provide energy for the machine core plate and the fan assembly. According to the formaldehyde tester provided by the invention, the fan assembly is used for guiding the air flow to flow from the air inlet channel to the air outlet channel after passing through the detection cavity, so that the detection efficiency and the detection precision of the formaldehyde tester are further improved.

Description

Technical Field

[0001] The present application belongs to the technical field of testing equipment, and more specifically, to a formaldehyde tester. Background Art

[0002] Formaldehyde is a colorless gas with high volatility and a strong pungent smell. Formaldehyde has a strong irritating effect on human skin and can cause skin eczema and systemic allergies. The World Health Organization has identified formaldehyde as a Class 1 carcinogen. There are multiple sources of formaldehyde indoors, including various phenolic resin glue artificial boards used as decorative materials such as wall panels and ceilings, as well as indoor displays and daily necessities that may emit formaldehyde, such as furniture, chemical fiber carpets and foam plastics. Therefore, for building materials, furniture materials, etc., before they are completed and put into use, they are generally tested for formaldehyde content using a formaldehyde tester.

[0003] In the related art, components such as detection chips used to obtain formaldehyde concentration in the air in the formaldehyde detector directly contact and detect the air when the formaldehyde detector is stationary. The detection efficiency is low and the detection range is limited by the natural flow speed of the air, which may have certain detection errors. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a formaldehyde tester, aiming to improve the deficiencies of the above-mentioned prior art and further improve the detection efficiency and detection accuracy of the formaldehyde detector.

[0005] To achieve the above purpose, the formaldehyde tester proposed in this application includes:

[0006] A housing assembly, the housing assembly comprising an upper housing and a lower housing, the upper housing being detachably connected to the lower housing and enclosing with the lower housing to form a detection cavity and an air inlet channel and an air outlet channel communicating with the detection cavity;

[0007] A core board, which is disposed in the detection cavity and fixedly connected to the lower housing and is used to obtain the formaldehyde concentration;

[0008] a fan assembly, the fan assembly being disposed in the detection chamber and fixedly connected to the lower housing, so as to guide the flow of air in the detection chamber from the air inlet passage toward the air outlet passage; and

[0009] A power supply component is arranged on the shell component and is electrically connected to the movement board to provide energy for the movement board and the fan component.

[0010] As a feasible implementation manner, the upper shell is formed with a first air inlet and a third air outlet, and the lower shell is formed with a first air outlet and a second air outlet, the first air outlet is connected to the detection cavity, the first air outlet is connected to the detection cavity and the second air outlet, the second air outlet is connected to the third air outlet, the first air inlet forms the air inlet channel, and the first air outlet, the second air outlet and the third air outlet are connected in sequence to form the air outlet channel.

[0011] As a feasible embodiment, the shell assembly also includes a top cover, which is connected to the wall of the upper shell facing away from the lower shell, and is enclosed with the upper shell to form an auxiliary cavity, and the top cover is provided with a second air inlet hole, the second air inlet hole is connected to the auxiliary cavity, the first air inlet hole is connected to the auxiliary cavity and the test cavity, and forms the air inlet channel together with the second air inlet hole and the auxiliary cavity.

[0012] As a feasible implementation manner, there are multiple second air inlet holes, and the multiple second air inlet holes are arranged on the outer wall surface of the top cover.

[0013] As a feasible implementation manner, a guide slope is provided on the wall surface of the upper shell body facing away from the lower shell body, and the guide slope is inclined toward the top cover so that the second air inlet hole is at least partially exposed on the inclined slope surface of the guide slope facing away from the lower shell body.

[0014] As a feasible implementation manner, there are multiple first air inlet holes, and the multiple first air inlet holes are symmetrically arranged along the width direction of the upper shell.

[0015] As a feasible implementation manner, the lower shell is provided with a mounting platform protruding toward the upper shell, and the movement plate is fixedly connected to the mounting platform.

[0016] As a feasible embodiment, the shell assembly also includes a guide plate, which is arranged on the inner wall surface of the lower shell and extends toward the upper shell, and forms an installation space spaced apart from the mounting platform in the lower shell, the fan assembly is arranged in the installation space, and the second air outlet is arranged on the side wall surface of the guide plate.

[0017] As a feasible implementation mode, a receiving groove is formed on the side of the lower shell facing away from the upper shell corresponding to the mounting platform, and the shell assembly also includes a battery cover, which is detachably connected to the lower shell and enclosed with the receiving groove to form a battery cavity, and the power supply assembly is arranged in the battery cavity.

[0018] As a feasible implementation, the formaldehyde tester also includes multiple display units, which are arranged in the detection cavity and electrically connected to the movement board. The multiple display units are arranged at intervals along the extension direction of the movement board to display the test results according to the formaldehyde concentration.

[0019] Compared with the prior art, the formaldehyde tester provided in the embodiment of the present application has the following beneficial effects:

[0020] A detection chamber, an air inlet channel and an air outlet channel are formed by the upper shell and the lower shell separated from each other in the shell assembly, and the fan assembly in the detection chamber guides the airflow from the air inlet channel through the detection chamber and out of the air outlet channel, thereby further increasing the detection accuracy and efficiency of the formaldehyde detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 labor.

[0022] Figure 1 Schematic diagram of the three-dimensional structure of the formaldehyde tester provided in the embodiment of the present application Figure 1 ;

[0023] Figure 2 A schematic diagram of the explosion structure of the formaldehyde tester provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the top view of the formaldehyde tester provided in the embodiment of the present application after the top cover is hidden Figure 1 ;

[0025] Figure 4 for Figure 3 The three-dimensional structure of the formaldehyde tester shown Figure 2 ;

[0026] Figure 5 A schematic diagram of the top view of the formaldehyde tester provided in the embodiment of the present application after the top cover and the movement board are hidden Figure 2 .

[0027] Among them, the reference numerals in the figure are:

[0028] 10. Shell assembly; 11. Upper shell; 111. First air inlet; 113. Third air outlet; 115. Guide slope; 12. Top cover; 121. Second air inlet; 123. Auxiliary cavity; 13. Lower shell; 131. First air outlet; 133. Second air outlet; 135. Mounting table; 14. Guide plate; 15. Battery cover; 151. Battery cavity; 17. Detection cavity; 30. Movement board; 50. Fan assembly; 60. Display unit; 70. Power supply assembly. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] Formaldehyde is a colorless gas with high volatility and a strong pungent smell. Formaldehyde has a strong irritating effect on human skin and can cause skin eczema and systemic allergies. The World Health Organization has identified formaldehyde as a Class 1 carcinogen. There are multiple sources of formaldehyde indoors, including various phenolic resin glue artificial boards used as decorative materials such as wall panels and ceilings, as well as indoor displays and daily necessities that may emit formaldehyde, such as furniture, chemical fiber carpets and foam plastics. Therefore, for building materials, furniture materials, etc., before they are completed and put into use, they are generally tested for formaldehyde content using a formaldehyde tester.

[0034] In the related art, components such as detection chips used to obtain formaldehyde concentration in the air in the formaldehyde detector directly contact and detect the air when the formaldehyde detector is stationary. The detection efficiency is low and the detection range is limited by the natural flow speed of the air, which may have certain detection errors.

[0035] The following will be combined Figures 1 to 5 , the water system provided in the embodiments of the present application is described in detail through specific examples.

[0036] Please also read Figures 1 to 5 , Figure 1 Schematic diagram of the three-dimensional structure of the formaldehyde tester provided in the embodiment of the present application Figure 1 ; Figure 2 A schematic diagram of the explosion structure of the formaldehyde tester provided in an embodiment of the present application; Figure 3 A schematic diagram of the top view of the formaldehyde tester provided in the embodiment of the present application after the top cover is hidden Figure 1 ; Figure 4 for Figure 3 The three-dimensional structure of the formaldehyde tester shown Figure 2 ; Figure 5 A schematic diagram of the top view of the formaldehyde tester provided in the embodiment of the present application after the top cover and the movement board are hidden Figure 2 .

[0037] One embodiment of the utility model provides a formaldehyde tester, including: a shell assembly 10, the shell assembly 10 includes an upper shell 11 and a lower shell 13, the upper shell 11 is detachably connected to the lower shell 13, and is enclosed with the lower shell 13 to form a detection chamber 17 and an air inlet channel and an air outlet channel connected to the detection chamber 17; a movement board 30, the movement board 30 is arranged in the detection chamber 17 and fixedly connected to the lower shell 13, and is used to obtain the formaldehyde concentration; a fan assembly 50, the fan assembly 50 is arranged in the detection chamber 17 and fixedly connected to the lower shell 13, so as to guide the flow in the detection chamber 17 from the air inlet channel to the air outlet channel; and a power supply assembly 70, the power supply assembly 70 is arranged in the shell assembly 10, and is electrically connected to the movement board 30, so as to provide energy for the movement board 30 and the fan assembly 50.

[0038] It can be understood that the shell assembly 10 is used to form a detection channel with an air inlet and an air outlet, and is used to guide the flow of air in the process of air entering from the air inlet and being discharged from the air outlet, so that the air can fully contact the core board 30 arranged in the detection air duct, so that the sensor for capturing the formaldehyde content in the air that may exist on the core board 30 has a larger contact area with the air, that is, further ensures the measurement accuracy of the core board 30 for the formaldehyde concentration in the air to be detected, and further improves the detection accuracy of the formaldehyde tester. On the other hand, the detection cavity 17 formed by the shell is also used to carry the core board 30, the power supply assembly and the vibration unit, so that the various components of the formaldehyde tester have a fixed position relationship relative to each other, avoiding the possibility of being disturbed by vibration during use and thus affecting the measurement accuracy.

[0039] It should be noted that the core board 30 can be a PCB (Printed Circuit Board) board, that is, a printed circuit board. The printed circuit board is a basic platform for connecting electronic components together. It has a plate-like structure made of insulating material, on which conductive circuits and other metal parts are printed, and is used to support and connect electronic components. The core board 30 set as a PCB board plays the role of supporting, connecting and conducting electrical signals in the formaldehyde monitoring device. It makes the connection between the electronic components more stable and reliable, optimizes the spatial arrangement in the detection cavity 17, and improves the performance and reliability of the formaldehyde tester.

[0040] As a feasible implementation manner, the upper shell 11 is formed with a first air inlet hole 111 and a third air outlet hole 113, and the lower shell 13 is formed with a first air outlet hole 131 and a second air outlet hole 133. The first air outlet hole 131 is connected to the detection cavity 17, the first air outlet hole 131 is connected to the detection cavity 17 and the second air outlet hole 133, the second air outlet hole 133 is connected to the third air outlet hole 113, the first air inlet hole 111 forms an air inlet channel, the first air outlet hole 131, the second air outlet hole 133 and the third air outlet hole 113 are connected in sequence to form an air outlet channel.

[0041] It is understandable that the first air outlet 131, the second air outlet 133 and the third air outlet 113 are connected in sequence to form an exhaust channel for guiding the air flow out of the detection chamber 17. In this way, the hole-shaped parts on the upper shell 11 and the lower shell 13 are evenly distributed, and the impact vibration that may be received during the air flow will be buffered and absorbed by the upper shell 11 and the lower shell 13, respectively, which increases the stability of the shell assembly 10 and the formaldehyde detector. On the other hand, different installation holes are respectively provided to enclose and form holes and channels after being fixed, which further reduces the processing difficulty and processing cost of the upper shell 11, that is, further reduces the production cost of the formaldehyde detector and prolongs the service life of the formaldehyde detector.

[0042] As a feasible embodiment, the shell assembly 10 also includes a top cover 12, which is connected to the wall of the upper shell 11 facing away from the lower shell 13, and is enclosed with the upper shell 11 to form an auxiliary cavity 123. The top cover 12 is provided with a second air inlet hole 121, and the second air inlet hole 121 is connected to the auxiliary cavity 123. The first air inlet hole 111 connects the auxiliary cavity 123 with the test cavity, and forms an air inlet channel with the second air inlet hole 121 and the auxiliary cavity 123.

[0043] It can be understood that the top cover 12 and the auxiliary cavity 123 formed by the top cover 12 and the upper shell 11 further extend the path length of the air flow into the test cavity, while reducing vibration and further filtering out possible impurities such as dust or droplets that may affect the components in the test cavity and the test results, thereby further increasing the use stability and detection accuracy of the formaldehyde detector.

[0044] As a feasible implementation manner, there are multiple second air inlet holes 121 , and the multiple second air inlet holes 121 are arranged around the outer wall surface of the top cover 12 .

[0045] It can be understood that the multiple second air inlet holes 121 arranged in a ring on the outer wall of the top cover 12 further increase the flow area between the external environment of the top cover 12 and the auxiliary cavity 123, thereby improving the detection efficiency of the core board 30 for the formaldehyde content in the air, that is, further increasing the detection efficiency of the formaldehyde detector.

[0046] As a feasible implementation mode, a guide slope 115 is provided on the wall surface of the upper shell 11 facing away from the lower shell 13, and the guide slope 115 is inclined toward the top cover 12 so that the second air inlet 121 is at least partially exposed on the inclined slope surface of the guide slope 115 facing away from the lower shell 13.

[0047] It can be understood that the guide slope 115 is a raised portion with an inclined angle in the cross-section in the extension direction. The guide slope 115 is arranged on the wall surface of the upper shell 11 on the side away from the lower shell 13, and the inclination direction of the guide slope 115 is toward the top cover 12. In this way, the air in the external environment is further guided to flow toward the top cover 12, so that the angle between the flow direction of the air entering the auxiliary cavity 123 from the second air inlet hole 121 and the top cover 12 becomes larger, thereby reducing the vibration or noise that may be generated by the airflow impacting the surface of the upper shell 11 during the flow of air, thereby further increasing the stability and service life of the formaldehyde detector.

[0048] As a feasible implementation manner, there are multiple first air inlet holes 111 , and the multiple first air inlet holes 111 are symmetrically arranged along the width direction of the upper shell 11 .

[0049] It is understandable that the multiple first air inlet holes 111 are symmetrically arranged along the width direction of the upper shell 11. In this way, during the operation of the formaldehyde detector, air can enter the detection chamber 17 through the multiple first air inlet holes 111 at the same time, further increasing the air flow rate and flow efficiency, that is, increasing the detection efficiency of the formaldehyde detector. At the same time, the symmetrically arranged first air inlet holes 111 make the impact and vibration that may be generated by the air on the side wall surface of the first air inlet holes 111 during the flow process have opposite directions and are buffered and absorbed by each other in opposite directions, further increasing the working stability of the shell assembly 10 and the formaldehyde detector.

[0050] As a feasible implementation manner, the lower shell 13 is provided with a mounting platform 135 protruding toward the upper shell 11 , and the movement plate 30 is fixedly connected to the mounting platform 135 .

[0051] It can be understood that the mounting platform 135 protruding from the lower shell 13 toward the upper shell 11 has a top surface of the mounting platform 135 that is not in the same plane as other inner wall surfaces for abutting and fixing the movement board 30, thereby avoiding interference of other parts that may be arranged on the inner wall surface of the lower shell 13 with the movement board 30, and increasing the thickness and spatial arrangement density of the shell assembly 10 in the direction from the lower shell 13 toward the upper shell 11, thereby further optimizing the space utilization of the formaldehyde tester and reducing the review cost.

[0052] As a feasible embodiment, the shell assembly 10 also includes a guide plate 14, which is arranged on the inner wall surface of the lower shell 13 and extends toward the upper shell 11, and forms an installation space spaced apart from the mounting platform 135 in the lower shell 13, the fan assembly 50 is arranged in the installation space, and the second air outlet 133 is arranged on the side wall surface of the guide plate 14.

[0053] It is understandable that the guide plate 14 is used to separate the other cavity parts in the lower housing 13 that are spaced apart from the mounting platform 135 and enclose to form a cavity for accommodating the fan assembly 50, providing stable protection for the fan assembly 50 while preventing the operation of the fan assembly 50 from affecting other components that may exist in the lower housing 13, further increasing the stability of the housing assembly 10 and the formaldehyde tester. At the same time, a second air outlet is provided on the side wall of the guide plate 14 to guide the air flow, which correspondingly increases the efficiency of the fan assembly 50 in guiding the airflow while reducing the volume of the space where the fan assembly 50 is located, that is, improving the detection efficiency of the formaldehyde tester.

[0054] As a feasible implementation mode, a receiving groove is formed on the side of the lower shell 13 facing away from the upper shell 11 corresponding to the mounting platform 135, and the shell assembly 10 also includes a battery cover 15, which is detachably connected to the lower shell 13 and enclosed with the receiving groove to form a battery cavity 151, and the power supply assembly 70 is disposed in the battery cavity 151.

[0055] It can be understood that the correspondingly arranged accommodating grooves and battery cavity 151 allow the power supply component 70 and electronic devices such as the movement board 30 to have independent spaces. In this way, when using a portable, detachable and replaceable power supply component 70 such as a lithium battery, the power supply component 70 can be directly removed from the battery cavity 151 and replaced after the power is exhausted without affecting other components in the detection cavity 17, thereby improving the flexibility of use and the convenience of maintenance of the formaldehyde tester.

[0056] As a feasible implementation, the formaldehyde tester also includes a plurality of display units 60, which are disposed in the detection cavity 17 and electrically connected to the movement board 30. The plurality of display units 60 are arranged at intervals along the extension direction of the movement board 30 to display the test results according to the formaldehyde concentration.

[0057] It can be understood that the display unit 60 is used to form an optical signal and transmit the optical signal through the light-transmitting slot out of the detection cavity 17 and be obtained by the user during use, and the power supply component 70 is also connected to the display unit 60 and provides power for the display unit 60 to emit the optical signal. In this way, the test results of the formaldehyde tester can be fed back in the form of optical signals in a timely manner, further increasing the convenience of use and user experience of the formaldehyde tester.

[0058] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A formaldehyde tester, characterized in that: include: A housing assembly, the housing assembly comprising an upper housing and a lower housing, the upper housing being detachably connected to the lower housing and enclosing with the lower housing to form a detection cavity and an air inlet channel and an air outlet channel communicating with the detection cavity; A core board, which is disposed in the detection cavity and fixedly connected to the lower housing and is used to obtain the formaldehyde concentration; A fan assembly, the fan assembly is disposed in the detection chamber and fixedly connected to the lower housing, so as to guide the flow of air in the detection chamber from the air inlet channel toward the air outlet channel; as well as A power supply component is arranged on the shell component and is electrically connected to the movement board to provide energy for the movement board and the fan component.

2. The formaldehyde tester according to claim 1, characterized in that: The upper shell is formed with a first air inlet and a third air outlet, and the lower shell is formed with a first air outlet and a second air outlet, the first air outlet is connected to the detection cavity, the first air outlet is connected to the detection cavity and the second air outlet, the second air outlet is connected to the third air outlet, the first air inlet forms the air inlet channel, and the first air outlet, the second air outlet and the third air outlet are connected in sequence to form the air outlet channel.

3. The formaldehyde tester according to claim 2, characterized in that: The shell assembly also includes a top cover, which is connected to the wall of the upper shell facing away from the lower shell, and is enclosed with the upper shell to form an auxiliary cavity. The top cover is provided with a second air inlet hole, and the second air inlet hole is connected to the auxiliary cavity. The first air inlet hole is connected to the auxiliary cavity and the test cavity, and forms the air inlet channel together with the second air inlet hole and the auxiliary cavity.

4. The formaldehyde tester according to claim 3, characterized in that: There are multiple second air inlet holes, and the multiple second air inlet holes are arranged on the outer wall of the top cover.

5. The formaldehyde tester according to claim 3, characterized in that: A guide slope is arranged on the wall surface of the upper shell body on the side away from the lower shell body, and the guide slope is inclined toward the top cover so that the second air inlet hole is at least partially exposed on the inclined slope surface of the guide slope on the side away from the lower shell body.

6. The formaldehyde tester according to claim 2, characterized in that: There are multiple first air inlet holes, and the multiple first air inlet holes are symmetrically arranged along the width direction of the upper shell.

7. The formaldehyde tester according to any one of claims 1 to 6, characterized in that: The lower shell is provided with a mounting platform protruding toward the upper shell, and the movement plate is fixedly connected to the mounting platform.

8. The formaldehyde tester according to claim 7, characterized in that: The shell assembly also includes a guide plate, which is arranged on the inner wall of the lower shell and extends toward the upper shell, and forms an installation space in the lower shell that is spaced apart from the installation platform. The fan assembly is arranged in the installation space, and the second air outlet is arranged on the side wall of the guide plate.

9. The formaldehyde tester according to any one of claims 1 to 6, characterized in that: A receiving groove is formed on a side of the lower shell body facing away from the upper shell body corresponding to the mounting platform. The shell assembly also includes a battery cover plate, which is detachably connected to the lower shell body and enclosed with the receiving groove to form a battery cavity. The power supply assembly is arranged in the battery cavity.

10. The formaldehyde tester according to any one of claims 1 to 6, characterized in that: The formaldehyde tester also includes a plurality of display units, which are disposed in the detection cavity and electrically connected to the movement board. The plurality of display units are arranged at intervals along an extension direction of the movement board to display test results according to the formaldehyde concentration.

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