measuring detection instrument

Abstract

The utility model provides a kind of measurement detecting instrument, comprising: instrument support is fixed in instrument shell, and the instrument shell is divided into first cavity and second cavity apart from each other, PCB mainboard is installed on instrument support, located in first cavity;Instrument bottom plate is installed at the bottom of instrument shell, and gap is left at the connecting position of both, external air flows into first cavity by gap;The top of instrument shell is provided with third cavity, and third cavity is communicated with first cavity by multiple first heat dissipation ports, and is communicated with second cavity by multiple second heat dissipation ports;Hot air in first cavity flows into second cavity by first heat dissipation port, second heat dissipation port in turn, and then is discharged from instrument shell by second cavity.The utility model improves the structure of instrument, that is, can guarantee waterproof performance, and can be certain heat dissipation again.The applicable ambient temperature range is further enlarged, and can better adapt to wider application environment.

Description

Technical Field

[0001] This utility model relates to the field of instrumentation, and in particular to a measuring and testing instrument. Background Technology

[0002] In the pharmaceutical, biochemical, water treatment, beer, and food production industries such as beverages, multi-parameter measurement and testing instruments are typically required.

[0003] Current measurement and testing instruments do not require heat dissipation due to their low performance, while high-performance instruments have limited heat dissipation capabilities, so their operating temperature is limited in the user manual.

[0004] When conventional analytical instruments are used in industries such as pharmaceuticals, biochemistry, and water treatment, the analytes are often liquids, requiring the instruments to have a certain degree of water resistance. Therefore, to ensure water resistance, the instruments are typically designed to be waterproof, minimizing liquid ingress. This means that heat generated by the PCB is generally confined within the instrument.

[0005] Typically, as instrument performance improves, the heat generated by its PCB board also increases. To ensure normal operation, the ambient temperature during use is limited. This restricts the instrument's application scenarios; in many situations exceeding the ambient temperature range, the instrument cannot be used.

[0006] In view of this, the inventors of this application have designed a measuring and testing instrument in order to overcome the above-mentioned technical problems. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the defect that the heat dissipation performance and waterproof performance of the instrument in the prior art cannot be simultaneously taken into account, resulting in a small ambient temperature range of the applicable instrument, and to provide a measurement and detection instrument.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution: A measuring and testing instrument, characterized in that the measuring and testing instrument includes: an instrument housing, an instrument base plate, an instrument bracket, and a PCB main board, wherein the instrument bracket is fixed inside the instrument housing, dividing the instrument housing into a first cavity and a second cavity that are separated from each other, and the PCB main board is located in the first cavity; The instrument base plate is installed at the bottom of the instrument housing, and a gap is left at the connection between the two, through which external air flows into the first cavity; The top of the instrument housing is provided with a third cavity, which is connected to the first cavity through a plurality of first heat dissipation vents and to the second cavity through a plurality of second heat dissipation vents; The hot air in the first cavity flows into the second cavity through the first heat dissipation port and the second heat dissipation port in sequence, and then exits the instrument housing through the second cavity.

[0009] According to one embodiment of the present invention, the measuring and testing instrument further includes an instrument top cover and a decorative cover. The instrument top cover is installed on the top of the instrument housing, the decorative cover is installed on the instrument top cover, and the third cavity is located between the instrument top cover and the decorative cover.

[0010] According to one embodiment of the present invention, the first heat dissipation port is located above the first cavity, and the second heat dissipation port is located above the second cavity.

[0011] According to one embodiment of the present invention, the decorative cover is made of glass or transparent plastic.

[0012] According to one embodiment of the present invention, a third cavity is formed between the instrument top cover and the decorative cover. Hot air in the first cavity enters the third cavity through the first heat dissipation port and then enters the second cavity through the second heat dissipation port.

[0013] According to one embodiment of the present invention, a hook opening is provided on the instrument base plate, and a hook part is provided at the bottom of the instrument housing. The hook part is connected to the hook opening, and the gap is located at the hook opening for the interaction of external air and internal air.

[0014] According to one embodiment of the present invention, the structure of the instrument housing located in the second cavity is a door structure, and a through hole is provided at the lower part of the door structure, through which hot air in the second cavity is discharged outward.

[0015] According to one embodiment of the present invention, the door structure is a revolving door, which includes a fixed end and a movable end; the fixed end is provided with at least one rotating shaft, and the instrument bracket is provided with a shaft hole adapted to the rotating shaft; the movable end engages with the fixed end when the revolving door is closed.

[0016] According to one embodiment of the present invention, the bottom of the instrument base plate is provided with multiple support feet.

[0017] According to one embodiment of the present invention, the support foot raises the instrument base plate by a height greater than or equal to 4mm.

[0018] The positive and progressive effects of this utility model are as follows: This utility model relates to a measuring and testing instrument, which features an improved structure that ensures both waterproof performance and adequate heat dissipation. The instrument's applicable ambient temperature range has also been expanded, allowing it to better adapt to a wider range of applications. Attached Figure Description

[0019] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein: Figure 1 This is an exploded structural diagram of the measuring and testing instrument of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the measuring and testing instrument of this utility model.

[0021] Figure 3 This is a schematic diagram of the hot air flow inside the measuring and testing instrument of this utility model.

[0022] Figure 4 This is a perspective view of the measuring and testing instrument of this utility model.

[0023] Figure 5 This is a schematic diagram of the hook opening structure in the measuring and testing instrument of this utility model.

[0024] Figure 6 This is a schematic diagram showing the flow of air from the bottom into the measuring instrument of this utility model.

[0025] [Attached image labels] Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts.

[0028] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0029] Furthermore, it is required that this utility model be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0030] like Figures 1 to 6 As shown, this utility model discloses a measuring and testing instrument, including: an instrument housing 10, an instrument base plate 20, an instrument bracket 30, a PCB motherboard 40, and an instrument top cover 50. The instrument bracket 30 is fixed inside the instrument housing 10, and the instrument housing 10 is divided into a first cavity A and a second cavity B that are separated from each other. The PCB motherboard 40 is installed on the instrument bracket 30 and is located in the first cavity A.

[0031] The instrument base plate 20 is installed at the bottom of the instrument housing 10, with a gap C at the connection point between the two, through which external air flows into the first cavity A. Preferably, for example, a hook opening 21 is provided on the instrument base plate 20, and a hook portion 11 is provided at the bottom of the instrument housing 10, connecting the hook portion 11 to the hook opening 21. In this case, the gap C is located at the connection point between the hook opening 21 and the hook portion 11, facilitating the exchange of external and internal air.

[0032] The instrument top cover 50 is installed on the top of the instrument housing 10. Multiple first heat dissipation vents 51 and multiple second heat dissipation vents 52 are provided on the instrument top cover 50, such that the first heat dissipation vents 51 communicate with the first cavity A, and the second heat dissipation vents 52 communicate with the second cavity B. For example... Figure 3 As shown, hot air in the first cavity A flows into the second cavity B sequentially through the first heat dissipation port 51 and the second heat dissipation port 52, and then exits the instrument housing 10 through the second cavity B. In this embodiment, the first heat dissipation port 51 is preferably located above the first cavity A, and the second heat dissipation port 52 is located above the second cavity B.

[0033] Additionally, a decorative cover 60 may be installed on the instrument top cover 50. The decorative cover 60 may preferably be made of glass or transparent plastic.

[0034] A third cavity D is formed between the instrument top cover 50 and the decorative cover 60. During the heat dissipation process, hot air in the first cavity A enters the third cavity D through the first heat dissipation port 51, and then enters the second cavity B through the second heat dissipation port 52.

[0035] In addition, such as Figure 1 and Figure 2 As shown, the structure of the instrument housing 10 located in the second cavity B is a door structure 70. The lower part of the door structure 70 is provided with a through hole 71, so that the hot air in the second cavity B can be discharged outward through the through hole 71.

[0036] Preferably, the door structure 70 can be configured as a revolving door, which includes a fixed end 72 and a movable end 73. The fixed end 72 is provided with at least one rotating shaft, and the instrument bracket 30 inside the instrument housing 10 is provided with a shaft hole adapted to the rotating shaft. When the revolving door is closed, the movable end 73 engages with the fixed end 72.

[0037] Based on the structural description, combined with Figure 3 and Figure 6 As shown, for waterproofing purposes, if water enters the second cavity B through the through hole 71 of the door structure 70, the instrument bracket 30 inside the instrument housing 10 needs to have water-blocking capabilities, that is, the second cavity B and the first cavity A are relatively separated at a certain height.

[0038] When the measuring instrument is running, the main heat source comes from the PCB motherboard 40. The heat-generating component is the SOM chip 41 located near the center. Because hot air has a lower density due to thermal expansion than cold air, the air 300 heated by the SOM chip 41 will... Figure 3 The air floats in the direction of the middle arrow, rising through the first heat dissipation vent 51 into the third cavity D. Then, the second heat dissipation vent 52 of the instrument top cover 50 exchanges the hot air in the third cavity D with the air in the second cavity B between the instrument housing 10 and the instrument bracket 30 plus door structure 70. This allows for heat exchange and dissipation between the hot air inside the instrument housing 10 and the external space while ensuring waterproofing.

[0039] like Figure 5 As shown, multiple support feet 22 are also provided at the bottom of the instrument base plate 20. For example, in this embodiment, the support feet 22 can raise the instrument base plate 20 by a height greater than or equal to 4mm.

[0040] Because the instrument base plate 20 is equipped with support feet 22, the entire measuring instrument can be raised, leaving space at the bottom for gas exchange. External air E exchanges with internal air through the hook opening 21 of the instrument's pre-reserved slot structure. Due to the relatively small opening, raising the measuring instrument by more than 4mm using the support feet 22 prevents water or water droplets from entering the instrument's interior through the hook opening 21.

[0041] In summary, the present invention improves the structure of the measuring instrument, ensuring both waterproof performance and adequate heat dissipation. The applicable ambient temperature range of the measuring instrument is further expanded, allowing it to better adapt to a wider range of application environments.

[0042] For those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0043] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0044] Similarly, it should be noted that, in order to simplify the description of the embodiments disclosed in this application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of this application requires more features than those mentioned in the claims. In fact, the embodiments have fewer features than all the features of a single embodiment disclosed above. Some embodiments use numbers describing the number of components or attributes; it should be understood that such numbers used in the description of embodiments are modified in some examples by the terms "approximately," "about," or "generally."

[0045] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A measuring and testing instrument, characterized in that, The measuring instrument includes: an instrument housing, an instrument base plate, an instrument bracket, and a PCB motherboard. The instrument bracket is fixed inside the instrument housing, dividing the instrument housing into a first cavity and a second cavity that are separated from each other. The PCB motherboard is located in the first cavity. The instrument base plate is installed at the bottom of the instrument housing, and a gap is left at the connection between the two, through which external air flows into the first cavity; The top of the instrument housing is provided with a third cavity, which is connected to the first cavity through a plurality of first heat dissipation vents and to the second cavity through a plurality of second heat dissipation vents; The hot air in the first cavity flows into the second cavity through the first heat dissipation port and the second heat dissipation port in sequence, and then exits the instrument housing through the second cavity.

2. The measuring and testing instrument as described in claim 1, characterized in that, The measuring instrument also includes an instrument top cover and a decorative cover. The instrument top cover is installed on the top of the instrument housing, and the decorative cover is installed on the instrument top cover. The third cavity is located between the instrument top cover and the decorative cover.

3. The measuring and testing instrument as described in claim 1, characterized in that, The first heat dissipation vent is located above the first cavity, and the second heat dissipation vent is located above the second cavity.

4. The measuring and testing instrument as described in claim 2, characterized in that, The decorative cover is made of glass or transparent plastic.

5. The measuring and testing instrument as described in claim 2, characterized in that, A third cavity is formed between the instrument top cover and the decorative cover. Hot air in the first cavity enters the third cavity through the first heat dissipation port and then enters the second cavity through the second heat dissipation port.

6. The measuring and testing instrument as described in claim 1, characterized in that, The instrument base plate has a hook opening, and the bottom of the instrument housing has a hook part. The hook part is connected to the hook opening, and the gap is located at the hook opening for the interaction of external air and internal air.

7. The measuring and testing instrument as described in claim 1, characterized in that, The structure of the instrument housing located in the second cavity is a door structure, and a through hole is provided at the bottom of the door structure, through which hot air in the second cavity is discharged outward.

8. The measuring and testing instrument as described in claim 7, characterized in that, The door structure is a revolving door, which includes a fixed end and a movable end; the fixed end is provided with at least one rotating shaft, and the instrument bracket is provided with a shaft hole adapted to the rotating shaft; the movable end is engaged with the fixed end when the revolving door is closed.

9. The measuring and testing instrument as described in claim 1, characterized in that, The bottom of the instrument base plate is provided with multiple support feet.

10. The measuring and testing instrument as described in claim 9, characterized in that, The support feet raise the instrument base plate by a height of 4mm or more.

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