Light source heat dissipation structure of dust concentration measuring device

By using a combination of a heat sink and a fan in the light scattering dust concentration measuring device, the problem of reduced measurement accuracy caused by increased light source temperature is solved, achieving stable temperature control of the light source, ensuring measurement accuracy and extending its service life.

CN223978942UActive Publication Date: 2026-03-06CHONGQING CHUANYI AUTOMATION CO LTD
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Patent Information

Application Number
CN202520433591.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-03-06
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

Existing light-scattering dust concentration measuring devices suffer from reduced measurement accuracy and accelerated aging due to the increased temperature of the laser source after prolonged use.

Method used

It adopts a combination structure of heat dissipation base and cooling fan, and cools the light source through heat dissipation channel and air source cold air. The cooling fan further improves the cooling effect and ensures that the light source is at a suitable operating temperature.

Benefits of technology

It effectively stabilizes the temperature of the light source, improves measurement accuracy, and extends the lifespan of the light source.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a light source heat dissipation structure of a dust concentration measuring device, which comprises a light source used for providing a measuring light beam; the light source is arranged on the heat dissipation base, a heat dissipation channel, an air inlet connector and an air outlet connector are arranged in the heat dissipation base, the heat dissipation channel is communicated with the air inlet connector and the air outlet connector, and the air inlet connector is communicated with the air source; and the heat dissipation fan is arranged on the heat dissipation base, and the heat dissipation fan is arranged opposite to the light source. When the device works, the temperature of the light source rises, the temperature is conducted to the heat dissipation base, the temperature of the heat dissipation base rises, cold air in the air source enters the heat dissipation channel through the air inlet connector, the cold air takes away heat through the heat dissipation channel, and therefore the light source is cooled; and a cooling fan is combined, so that the cooling effect of the light source can be more effectively realized, the light source can be stabilized at a proper working temperature, and the measurement accuracy of the device is ensured.
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Description

Technical Field

[0001] This utility model relates to the field of dust concentration measurement technology, and in particular to a heat dissipation structure for a light source of a dust concentration measurement device. Background Technology

[0002] The light scattering dust concentration measurement method is a specialized detection instrument widely used in environmental monitoring, industrial production, scientific research experiments, homes and public places, and medical and health fields. Its working principle is based on the principle of light scattering. When particulate matter in a gas passes through a laser beam, it scatters light. The intensity of this scattered light is detected by a photoelectric sensor, thereby calculating the dust concentration.

[0003] However, existing light scattering dust concentration measurement devices typically use lasers as the light source. During the measurement process, the temperature of the laser light source will continuously rise over time. Excessive temperature will cause unstable power output of the light source, affecting measurement accuracy and accelerating the aging of internal components of the laser light source, thus shortening its service life. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a heat dissipation structure for the light source of a dust concentration measuring device, so as to solve the problem that the measurement accuracy is reduced due to the increase in the temperature of the laser light source after long-term use of the existing light scattering dust concentration measuring device.

[0005] To achieve the above and other related objectives, this utility model provides a heat dissipation structure for the light source of a dust concentration measuring device, comprising:

[0006] A light source, used to provide the measuring beam;

[0007] A heat dissipation base is provided, the light source is disposed on the heat dissipation base, a heat dissipation channel is provided inside the heat dissipation base, an air inlet connector and an exhaust connector are connected to the heat dissipation base, the heat dissipation channel is connected to the air inlet connector and the exhaust connector respectively, the air inlet connector is connected to an air source, and the exhaust connector is used to discharge the gas in the heat dissipation channel;

[0008] A cooling fan is mounted on the heat sink base, and the cooling fan is positioned opposite to the light source.

[0009] Optionally, it also includes a light source cabin, the light source cabin comprising a barrel and a sealing plate, the barrel being used to mount the light source, and the sealing plate being used to close the barrel.

[0010] Optionally, the side wall of the barrel is provided with a plurality of first locking holes along the circumferential direction, and the sealing plate is provided with a plurality of first through holes along the circumferential direction corresponding to the first locking holes.

[0011] Optionally, the cover plate has a first through hole for the pins of the light source to pass through the light source housing.

[0012] Optionally, a second through hole for light emission from the light source is provided at the bottom of the barrel.

[0013] Optionally, the heat dissipation base is provided with a mounting slot for mounting the barrel.

[0014] Optionally, a third through hole is provided at the bottom of the mounting groove corresponding to the second through hole.

[0015] Optionally, the heat dissipation base has a plurality of second locking holes distributed around the mounting groove, and the sealing plate has a plurality of second through holes corresponding to the second locking holes.

[0016] Optionally, the heat dissipation base is provided with multiple bolted connecting posts.

[0017] Optionally, the cooling fan has multiple third through holes corresponding to the bolt connection post.

[0018] As described above, this utility model has the following beneficial effects: By installing the light source on the heat dissipation base, when the device is working, the temperature of the light source rises and is conducted to the heat dissipation base, causing the temperature of the heat dissipation base to rise. The cold air in the air source enters the heat dissipation channel on the heat dissipation base through the air inlet connector. The cold air carries away the heat of the heat dissipation base through the heat dissipation channel, thereby cooling the heat dissipation base. The cooled heat dissipation base continuously carries away the heat of the light source, thereby achieving the effect of cooling the light source. Furthermore, combined with the cooling fan that is positioned opposite the light source installation position on the heat dissipation base, the cooling effect of the light source can be achieved more effectively, allowing the light source to be stabilized at a suitable working temperature and ensuring the measurement accuracy of the device. Attached Figure Description

[0019] Figure 1 The diagram shown is a schematic diagram of the heat dissipation structure of the light source of the dust concentration measuring device shown in the embodiment of this application.

[0020] Figure 2 The diagram shown is a cross-sectional view of the heat dissipation structure of the light source of the dust concentration measuring device shown in an embodiment of this application.

[0021] Figure 3 The diagram shown is a structural schematic of the heat sink according to an embodiment of this application;

[0022] Figure 4 The diagram shown is a structural schematic of the light source cockpit as illustrated in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures

[0024] Light source 1, heat dissipation base 2, heat dissipation channel 201, air inlet connector 202, exhaust connector 203, mounting slot 204, third through hole 205, second locking hole 206, bolt connection column 207, cooling fan 3, light source housing 4, barrel 401, first locking hole 401a, second through hole 401b, sealing plate 402, first through hole 402a, first through hole 402b, second through hole 402c. Detailed Implementation

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0026] Please see Figures 1 to 4 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0027] Before describing the embodiments of this utility model in detail, the application environment of this utility model will be described first. The technology of this utility model is mainly applied to the field of dust concentration measurement technology. This utility model is used to solve the problem that the measurement accuracy decreases due to the increase in laser source temperature after prolonged use of existing light scattering dust concentration measuring devices.

[0028] Please combine Figures 1 to 4 As shown, this utility model provides a heat dissipation structure for the light source of a dust concentration measuring device.

[0029] In an exemplary embodiment of this application, the heat dissipation structure of the light source 1 of the dust concentration measuring device includes:

[0030] Light source 1, used to provide the measurement beam;

[0031] Heat dissipation base 2, light source 1 is set on heat dissipation base 2, heat dissipation base 2 is provided with heat dissipation channel 201, and air inlet connector 202 and exhaust connector 203 are connected on heat dissipation base 2. Heat dissipation channel 201 is connected to air inlet connector 202 and exhaust connector 203 respectively. Air inlet connector 202 is connected to air source, and exhaust connector 203 is used to discharge the gas in heat dissipation channel 201.

[0032] Cooling fan 3 is mounted on cooling base 2 and is positioned opposite to light source 1.

[0033] In this embodiment, by mounting the light source 1 on the heat dissipation base 2, when the device is working, the temperature of the light source 1 rises and is conducted to the heat dissipation base 2, causing the temperature of the heat dissipation base 2 to rise. The cold air in the air source enters the heat dissipation channel 201 on the heat dissipation base 2 through the air inlet connector 202. The cold air carries away the heat from the heat dissipation base 2 through the heat dissipation channel 201, thereby cooling the heat dissipation base 2. The cooled heat dissipation base 2 continuously carries away the heat from the light source 1, thereby achieving the effect of cooling the light source 1. Furthermore, combined with the cooling fan 3 on the heat dissipation base 2 that is positioned opposite to the installation position of the light source 1, the cooling effect of the light source 1 can be achieved more effectively, allowing the light source 1 to be stabilized at a suitable operating temperature, ensuring the measurement accuracy of the device.

[0034] It is worth noting that the light source 1 includes, but is not limited to, using a 6.5nm laser diode, and the operating temperature of the light source 1 is between 20 and 40°C.

[0035] In an exemplary embodiment of this application, a light source cabin 4 is also included. The light source cabin 4 includes a barrel 401 and a sealing plate 402. The barrel 401 is used to install the light source 1, and the sealing plate 402 is used to close the barrel 401.

[0036] In this embodiment, by placing the light source 1 inside the light source cabin 4, a closed working environment can be provided for the light source 1, avoiding direct exposure of the light source 1 to the working environment and reducing the risk of damage to the light source 1.

[0037] In an exemplary embodiment of this application, the sidewall of the barrel 401 is provided with a plurality of first locking holes 401a distributed circumferentially, and the sealing plate 402 is provided with a plurality of first through holes 402a corresponding to the first locking holes 401a along the circumferential direction.

[0038] In this embodiment, the sealing plate 402 and the barrel 401 are locked together by locking screws passing through the first through hole 402a and the first locking hole 401a, thereby realizing the connection between the sealing plate 402 and the barrel 401. Through the detachable connection between the sealing plate 402 and the barrel 401, the light source 1 in the light source cabin 4 can be easily inspected or replaced.

[0039] In an exemplary embodiment of this application, the cover plate 402 has a first through hole 402b for the pins of the light source 1 to pass through the light source housing 4.

[0040] In this embodiment, by providing a first through hole 402b on the sealing plate 402, it is convenient for the pins of the light source 1 to pass through.

[0041] In an exemplary embodiment of this application, a second through hole 401b for light emission from the light source 1 is provided at the bottom of the barrel 401.

[0042] In this embodiment, the light emitted by the light source 1 exits through the second through hole 401b opened at the bottom of the barrel 401.

[0043] In an exemplary embodiment of this application, the heat dissipation base 2 is provided with a mounting groove 204 for mounting the barrel 401.

[0044] In this embodiment, by opening an installation slot 204 on the heat dissipation base 2 for installing the barrel 401, the barrel 401 can be embedded in the heat dissipation base 2.

[0045] In an exemplary embodiment of this application, a third through hole 205 is provided at the bottom of the mounting groove 204 corresponding to the second through hole 401b.

[0046] In this embodiment, a third through hole 205 is opened at the bottom of the mounting groove 204 corresponding to the second through hole 401b opened on the barrel 401. The light emitted by the light source 1 is emitted from the heat dissipation base 2 through the second through hole 401b and the third through hole 205.

[0047] In an exemplary embodiment of this application, a plurality of second locking holes 206 are distributed around the mounting groove 204 on the heat sink base 2, and a plurality of second through holes 402c are provided on the sealing plate 402 corresponding to the second locking holes 206.

[0048] In this embodiment, the cockpit and the heat dissipation base 2 are fixedly connected by a locking member passing through the second through hole 402c provided on the sealing plate 402 and locking it with the second locking hole 206 on the heat dissipation base 2.

[0049] In an exemplary embodiment of this application, the heat sink base 2 is provided with multiple bolt-connected posts 207.

[0050] In this embodiment, the bolt connecting post 207 is a hexagonal connecting post with an external thread section and an internal thread section. The external thread section is threadedly connected to the heat sink base 2, and the cooling fan 3 is locked to the internal thread section by a screw, thereby realizing the connection between the cooling fan 3 and the heat sink base 2.

[0051] In an exemplary embodiment of this application, the cooling fan 3 has a plurality of third through holes corresponding to the bolt connection post 207.

[0052] In this embodiment, the third through hole is used to pass through the locking bolt.

[0053] The working principle is as follows: by mounting the light source 1 on the heat dissipation base 2, when the device is working, the temperature of the light source 1 rises and is conducted to the heat dissipation base 2, causing the temperature of the heat dissipation base 2 to rise. The cold air in the air source enters the heat dissipation channel 201 on the heat dissipation base 2 through the air inlet connector 202. The cold air carries away the heat from the heat dissipation base 2 through the heat dissipation channel 201, thereby cooling the heat dissipation base 2. The cooled heat dissipation base 2 continuously carries away the heat from the light source 1, thus achieving the effect of cooling the light source 1. In addition, combined with the cooling fan 3 on the heat dissipation base 2 that is positioned opposite to the installation position of the light source 1, the cooling effect of the light source 1 can be achieved more effectively, so that the light source 1 can be stabilized at a suitable working temperature, ensuring the measurement accuracy of the device.

[0054] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A light source heat dissipation structure of a dust concentration measuring device, characterized by, The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device.

2. The light source heat dissipation structure of a dust concentration measuring device according to claim 1, characterized by: The application relates to a light source cooling device.

3. The light source heat dissipation structure of a dust concentration measuring device according to claim 2, characterized by: The application relates to a light source cooling device.

4. The light source heat dissipation structure of a dust concentration measuring device according to claim 3, characterized by: The application relates to a light source cooling device.

5. The light source heat dissipation structure of a dust concentration measuring device according to claim 4, characterized by: The application relates to a light source cooling device.

6. The light source heat dissipation structure of a dust concentration measuring apparatus according to claim 5, wherein: The application relates to a light source cooling device.

7. The light source heat dissipation structure of a dust concentration measuring apparatus according to claim 6, wherein: The application relates to a light source cooling device.

8. The light source heat dissipation structure of a dust concentration measuring apparatus according to claim 7, wherein: The application relates to a light source cooling device.

9. The light source heat dissipation structure of a dust concentration measuring apparatus according to claim 1, wherein: The application relates to a light source cooling device.

10. The light source heat dissipation structure of a dust concentration measuring apparatus according to claim 9, wherein: The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application relates to a light source cooling device. The application