CN221572464U - Sensor assembly - Google Patents

Abstract

The utility model relates to a sensor assembly, which comprises: a shell forming a housing cavity, the shell being provided with a vent to allow air to enter the housing cavity; and a bracket installed in the housing cavity, the bracket comprising a support portion; and a sensor accommodated in the housing cavity, the sensor comprising a first sensor with a fan and a second sensor for detecting temperature, wherein the sensor is installed above the support portion by the bracket, the bracket forming an air inlet area and an air outlet area, the air inlet area corresponds to the air inlet of the first sensor, and the air outlet area corresponds to the air outlet of the first sensor; the bracket further comprises a battery sleeve for installing a rechargeable battery, the battery sleeve is fixedly arranged above the support portion, the battery sleeve is basically vertically arranged in the housing cavity, and the second sensor is arranged below the support portion. The two main heat sources, the rechargeable battery and the first sensor, are separated from the second sensor by the support portion, so as to avoid the heat influence of the heat source and ensure the detection accuracy of the second sensor.

Description

Sensor components

Technical Field

The utility model relates to a sensor component, in particular to a sensor component associated with air conditioning equipment.

Background Art

Air handling equipment usually includes various sensors to detect various data in the air such as temperature, humidity, carbon dioxide content, PM2.5 concentration, etc., and feed them back to the air handling equipment. After identification and judgment by the processor in the air handling equipment, the working state of the whole machine is adjusted to achieve the optimal purpose.

An existing independent sensor assembly can be placed away from the main body of the air handling device for use, usually in the main activity area of people, so as to more accurately feedback the air conditions in the activity area to the air handling device, and can simultaneously detect multiple air quality influencing factors. However, as more and more electronic components including sensors, circuit boards, etc. are integrated into the housing of the sensor assembly, these components will generate heat during operation, and the sensing accuracy of the existing sensor assembly, especially the thermal sensors (such as temperature and humidity sensors), is not high, thereby affecting the overall performance of the sensor assembly.

Therefore, there is a need to improve the existing sensor assembly having multiple sensors, which can solve the problem of poor detection accuracy in the above-mentioned prior art.

Utility Model Content

To overcome the deficiencies of the prior art, the utility model provides a sensor assembly comprising: a shell, the shell forming a accommodating cavity, the shell being provided with ventilation holes to allow air to enter the accommodating cavity; and a bracket, the bracket being mounted in the accommodating cavity, the bracket comprising a supporting portion; and a plurality of sensors, the plurality of sensors being accommodated in the accommodating cavity, the sensors comprising a first sensor with a fan and a second sensor, wherein the first sensor is mounted above the supporting portion by the bracket, the bracket forming an air inlet area and an air outlet area, when the first sensor is mounted on the bracket, the air inlet area corresponds to the air inlet of the first sensor, and the air outlet area corresponds to the air outlet of the first sensor; the bracket also comprises a battery sleeve for mounting a rechargeable battery, the battery sleeve is fixedly disposed above the supporting portion, the battery sleeve is basically vertically arranged in the accommodating cavity, and the second sensor is arranged below the supporting portion.

The utility model provides a sensor assembly with integrated multiple detection functions, which can at least detect TVOC, PM2.5, temperature and humidity, and is equipped with a rechargeable battery to provide power to these components. The rechargeable battery and the first sensor, two main heat sources, are separated from the second sensor by a support part, thereby avoiding the heat influence of the heat source and improving the detection accuracy of the second sensor.

According to one aspect of the utility model, the support portion extends in a horizontal direction, the bracket further includes a first chamber and a heat-insulating chamber formed below the support portion, the multiple sensors further include a formaldehyde sensor, the formaldehyde sensor is arranged in the first chamber, the second sensor is arranged in the heat-insulating chamber, and a third air heat-insulating layer is arranged on one side between the first chamber and the heat-insulating chamber. By separating the first chamber where the formaldehyde sensor is arranged from the heat-insulating chamber where the second sensor is arranged by the third air heat-insulating layer, it is possible to effectively prevent the heat generated by the formaldehyde sensor from affecting the working accuracy of the temperature and humidity sensor.

According to another aspect of the utility model, a part of the support part has a hollow part, and the part with the hollow part constitutes the top wall of the first chamber. The provision of the hollow part is conducive to the formaldehyde sensor to fully contact the surrounding air, thereby improving the detection accuracy of the formaldehyde sensor.

According to another aspect of the utility model, the support portion extends in the horizontal direction, a heat-insulating chamber and a second chamber are arranged below the support portion, the second sensor is arranged in the heat-insulating chamber, a power circuit board is installed in the second chamber, and a first air heat-insulating layer is arranged between the second chamber and the heat-insulating chamber. The arrangement of the first air heat-insulating layer minimizes the influence of the power circuit board in the second chamber on the second sensor.

According to another aspect of the utility model, the bracket integrally forms a mounting groove for accommodating the first sensor, the mounting groove forms an air inlet area and an air outlet area on one side of the housing, the air inlet area and the air outlet area are separated by a distance, and an anti-misinstallation device is provided in the mounting groove, the mounting groove is located above the heat-insulating chamber and the second chamber, and a second air insulation layer is provided between the mounting groove and the support portion. On the one hand, the mounting groove enables the installer to easily install the first sensor, and the anti-misinstallation device in the mounting groove can prevent the first sensor from being installed upside down, and on the other hand, in addition to the heat insulation effect of the support portion, the second air insulation layer is also added to further isolate the heat influence of the first sensor.

According to another aspect of the utility model, the bracket also includes an integrally formed fastener barrel located above the support portion, and the fastener passes through the fastener barrel to fasten the housing. The fastener barrel fastens the housing, thereby reducing the impact of vibration that may be generated when the sensor assembly is used on the sensor.

According to another aspect of the utility model, the arc-shaped outer peripheral surface of the fastener barrel is integrally provided with at least one reinforcing rib. The provision of the reinforcing rib is conducive to increasing the integrated strength of the fastener barrel.

According to another aspect of the utility model, the arc-shaped outer peripheral surface of the battery sleeve is integrally provided with at least one reinforcing rib. The provision of the reinforcing rib is conducive to increasing the integrated strength of the battery sleeve.

According to another aspect of the utility model, the bracket is provided with a buckle portion, and the housing is provided with a matching buckle portion. When the bracket is inserted into the housing cavity of the housing, the buckle portion and the matching buckle portion are engaged. In the process of installing the bracket, before the fastener is connected, the engagement of the buckle portion and the matching buckle portion prevents the bracket from being separated from the housing, which is beneficial to the operability of the installation.

According to another aspect of the utility model, the sensor assembly further includes a screen portion and a control circuit board. The control circuit board is mounted on a side of the screen portion facing the accommodating cavity, and a carbon dioxide sensor is mounted on the control circuit board.

According to another aspect of the utility model, the bracket is a molded part formed in one piece by a non-heat-conducting material. According to the utility model, the multifunctional bracket is formed in one piece, the production efficiency is high, and the accuracy of each installation part can be guaranteed.

BRIEF DESCRIPTION OF THE DRAWINGS

For a more complete understanding of the present invention, reference may be made to the following description of exemplary embodiments considered in conjunction with the accompanying drawings, in which:

FIG1 shows a perspective view of a sensor assembly according to a preferred embodiment of the present invention.

FIG. 2 shows a perspective view of a housing of a sensor assembly according to a preferred embodiment of the present invention.

FIG3 shows a perspective view of a sensor assembly according to a preferred embodiment of the present invention with the housing removed.

FIG. 4 shows a stereoscopic view of a bracket in a sensor assembly according to a preferred embodiment of the present invention.

FIG. 5 shows a top perspective view of a bracket in a sensor assembly according to a preferred embodiment of the present invention.

FIG. 6 shows a front perspective view of a bracket in a sensor assembly according to a preferred embodiment of the present invention.

FIG. 7 shows a partial front view of a housing of a sensor assembly according to a preferred embodiment of the present invention.

FIG. 8 shows a partial front view of a switch circuit board of a sensor assembly according to a preferred embodiment of the present invention.

Reference numerals list

1Sensor assembly

10 Shell

11 Accommodation chamber

12 Screen opening

13 base opening

14 sensor openings

15 Top wall

151 matching fastening part

16 Sidewall

161 matching buckle part

20 brackets

201 Supporting Department

202 hollow part

211 installation slot

230 battery sleeve

231 Notch

213 First Chamber

214 Second Chamber

215 Insulated Chamber

216 Third air insulation layer

217 Second air insulation layer

218 Fastener Cylinder

219 first air insulation layer

220 buckle part

221 Air intake area

222 Air outlet area

223 Reinforcement

225 Anti-misinstallation device

50 base

51 seat tube

52 slots

61TVOC and PM2.5 sensors

62 Formaldehyde Sensor

63 Temperature and humidity sensor

65 Power supply circuit board

66 switch circuit board

70 Screen Department

80 rechargeable batteries

DETAILED DESCRIPTION

The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

According to the utility model, the sensor assembly 100 is a desktop sensor assembly for controlling and detecting an air-conditioning device. When in use, the sensor assembly 100 is usually placed on a table with its base. Therefore, the directional terms such as "upper", "lower", "bottom", "top", "front", and "back" in this document refer to the corresponding directions with reference to the conventional placement position of the sensor assembly 100 when in use.

FIG1 shows a sensor assembly 1 according to a preferred embodiment of the utility model, and the sensor assembly 1 is suitable for being placed on a table for use. As shown in FIG1 , the sensor assembly 1 includes a housing 10 and a screen portion 70, the housing 10 having a side wall 15 extending in a vertical direction and a top wall 16 extending in a horizontal direction, and the screen portion 70 is arranged obliquely relative to the side wall and the top wall. The outer contour of such a sensor assembly 1 has a large contact area with the table at the bottom, and can be stably placed on the table. On the other hand, the inclined screen portion 70 makes it easier for users to see the content displayed on the screen.

FIG. 2 shows the housing 10 of the sensor assembly 1 separately. The top wall 15 and the side wall 16 of the housing 10 at least partially form the accommodating cavity 11. In a preferred embodiment, the housing 10 is a molded part formed of a non-thermal conductive plastic and has a plurality of openings formed thereon. As shown in FIG. 2 , the housing 10 mainly includes three openings, namely: a screen opening 12 in a trapezoidal shape for mounting the screen portion 70; a base opening 13 located at the bottom of the housing 10 for matching the base 50; and a sensor opening 14 located on the side wall 16 for mounting and replacing the sensor.

Ventilation holes are provided on part of the side wall 16 of the housing 10 to allow air to flow into and out of the accommodating chamber 11 of the housing 10, so that the sensor in the accommodating chamber 11 can detect the air. Preferably, the ventilation holes are arranged in an array.

FIG. 3 shows the main components installed inside the housing 10, while FIG. 4 shows separately the bracket 20 according to a preferred embodiment of the utility model. The bracket 20 of the sensor assembly 1 is configured to install a plurality of sensors. Preferably, the bracket 20 is used to install at least a first sensor and a second sensor, wherein the first sensor is an air parameter sensor with a fan, such as a TVOC and PM2.5 sensor 61, and the second sensor is a sensor for detecting temperature, such as a temperature and humidity sensor 63, and can further be used to install a formaldehyde sensor 62. The TVOC and PM2.5 sensors 61 generally include an integrated fan and have corresponding air inlet and outlet portions, and the fan in the sensor 61 actively draws airflow to flow through the sensor body to measure the TVOC and PM2.5 values of the airflow. In addition, the bracket 20 of the sensor assembly 1 is also configured to install a rechargeable battery. Preferably, the bracket 20 is integrally molded from a non-thermally conductive plastic.

In addition to the above components, a control circuit board is also provided in the housing cavity 11 of the housing 1 of the sensor assembly 1, and the control circuit board is preferably mounted on the side of the screen portion facing the housing cavity 11. In addition, the sensor assembly 1 may include a carbon dioxide sensor, which is preferably mounted on the control circuit board.

In particular, the bracket 20 of the sensor assembly 1 includes a support portion 201. In a preferred embodiment, as shown in FIG6 , the support portion 201 is a plate-shaped portion extending horizontally. When the bracket 20 is inserted into the accommodating cavity 11 of the housing 10, the support portion 201 is arranged transversely to the accommodating cavity 11, thereby dividing the accommodating cavity 11 into two space portions, an upper portion and a lower portion.

A TVOC and PM2.5 sensor 61 and a battery sleeve 230 are disposed above the support portion 201 of the bracket 20 . The opening of the mounting groove 211 faces upward, while the opening of the battery sleeve 230 faces the base 50 .

Specifically, the TVOC and PM2.5 sensor 61 is installed above the support part 201 by the mounting groove 211 of the TVOC and PM2.5 sensor 61 on the bracket 20. Corresponding to the air inlet and air outlet of the TVOC and PM2.5 sensor 61, the mounting groove 211 of the TVOC and PM2.5 sensor 61 of the bracket 20 is provided with an air inlet area 221 and an air outlet area 222 on the side facing the housing 10, and preferably, the air inlet area 221 and the air outlet area 222 are separated by a distance. When the TVOC and PM2.5 sensor 61 is installed in the mounting groove of the bracket 20, the air inlet area corresponds to the air inlet of the TVOC and PM2.5 sensor 61, and the air outlet area corresponds to the air outlet of the TVOC and PM2.5 sensor 61. In addition, as shown in FIG. 5, an anti-misinstallation device 225 is provided in the sensor mounting groove 211, and the anti-misinstallation device 225 is configured to only allow the sensor 51 to be inserted into the sensor mounting groove 22 in one direction, thereby avoiding the wrong installation direction of the sensor 51. The anti-misinstallation device 225 is preferably two protruding pieces protruding from opposite inner surfaces of the sensor mounting groove 22 .

A battery sleeve 230 is also integrally formed above the support portion 201 of the bracket 20, and the rechargeable battery is inserted into the battery sleeve 230. As shown in FIG3, the battery sleeve 230 is basically vertically arranged in the accommodating cavity 11. As shown in FIG6, the battery sleeve 230 also has a vertically extending notch 231, which faces the screen opening 12 of the housing 1. In this way, the rechargeable battery 80 is not sealed in the battery sleeve 230, which helps the battery 80 to dissipate heat. In addition, the base 50 includes a seat tube 51 for accommodating the end of the rechargeable battery 80, and the seat tube 51 has a U-shaped notch 52 for wiring. In addition, there is a gap between the seat tube 51 of the base 50 and the bottom of the battery sleeve 230 of the bracket 20, so that when the rechargeable battery 80 is inserted into the battery sleeve 230 and the end of the battery is placed in the seat tube 51, a section between the seat tube 51 and the sleeve 230 is exposed to the outside. Preferably, the ventilation holes should be removed or blocked on the side wall of the housing 1 adjacent to the exposed rechargeable battery 80. For example, as shown in FIG7 , the ventilation holes in the dotted line frame on the left side of the side wall 16 are blocked. This can prevent sharp objects from protruding into the ventilation holes and piercing the rechargeable battery 80, thus avoiding potential safety hazards.

Above the support portion 201 of the bracket 20, the accommodating chamber 11 is further provided with a switch circuit board 66 for mounting a switch device. The switch circuit board 66 is fixed to the inner wall surface of the top wall 15 of the housing 10 and is connected to the power circuit board 62 and the control circuit board through wiring.

On the other hand, below the support portion 201, the bracket 20 is configured to install a temperature and humidity sensor 63 and a formaldehyde sensor 62. At the same time, the bracket 20 is also configured to install a power supply circuit board 65. Specifically, the bracket 20 integrally forms a heat insulation board extending in the vertical direction below the support portion 201. The heat insulation board abuts against the inner wall surface of the shell 10 on the one hand, and abuts against the base 50 below on the other hand. In this way, the heat insulation board, a part of the support portion 201, a part of the shell 10 and a part of the base 50 surround and form an insulation chamber 215. The temperature and humidity sensor 63 is placed in the insulation chamber 215. A plurality of ventilation holes are provided on a part of the shell 10 surrounding the insulation chamber 215, so that outside air can enter the insulation chamber 215 from these ventilation holes.

Meanwhile, a first chamber 213 is provided at a position adjacent to one side of the heat-insulating chamber 215 of the bracket 20 for separately accommodating the formaldehyde sensor 62. The top wall of the first chamber 213 is formed by a portion of the support portion 201. A second chamber 214 is also provided at a position adjacent to the other side of the heat-insulating chamber 215 of the bracket 20 for separately accommodating the power supply circuit board 65. The top wall of the second chamber 214 is formed by a portion of the support portion 201. Preferably, the first chamber 213 and the second chamber 214 can be connected around the heat-insulating chamber 215.

As shown in FIG5 , in order to allow the formaldehyde sensor to fully contact the air, a hollow portion 202 may be provided on a portion of the support portion 201 at the top of the first chamber 213 where the formaldehyde sensor 62 is located. In this way, the air around the formaldehyde sensor 62 can pass through the hollow portion 202 and the ventilation holes on the housing 10 to the formaldehyde sensor 62, fully contacting the formaldehyde sensor 62, so as to obtain accurate measurement data.

In other alternative embodiments, if there are sufficient ventilation holes on the shell 10 and there is enough space between the formaldehyde sensor 62 and the first chamber 213, it is preferable to eliminate these hollow portions 202, and this part of the support portion 201 is a flat plate without holes, thereby effectively blocking the heat from the screen and the control circuit board.

In order to better isolate the heat generated by the formaldehyde sensor 62, preferably, a third air insulation layer 216 is provided between the first chamber 213 and the insulation chamber 215. The third air insulation layer 216 is at least partially surrounded by the bracket 20. Specifically, the third air insulation layer 216 is a cavity surrounded by the bracket 20 and the bottom 50, and the top of the first air insulation 216 is a part of the support part 201 of the bracket 20. As shown in FIG3, a second air insulation layer 217 is provided between the TVOC and PM2.5 sensor 61 and the support part 201. The second air insulation layer 217 is surrounded by the bracket 20. Specifically, the second air insulation layer 217 is a cavity surrounded by the bracket 20, and the bottom of the second air insulation 217 is a part of the support part 201 of the bracket 20, so as to better isolate the heat generated by the TVOC and PM2.5 sensor 61. In addition, a first air insulation layer 219 is provided between the insulation chamber 215 and the second chamber 214. The air insulation layer 219 is a cavity surrounded by the bracket 20 and the bottom 50 to better isolate the heat generated by the power supply circuit board 214. The provision of these air insulation layers 216, 217 and 219 effectively prevents heat from affecting the detection accuracy of the temperature and humidity sensor 63.

In addition, as shown in FIG. 4 and FIG. 5 , the bracket 20 further includes an integrally formed fastener barrel 218 located above the support portion 201. Correspondingly, a corresponding matching fastening portion 151 is provided on the inner wall surface of the top wall 15 of the housing 10, as shown in FIG. 2 . After the bracket 20 is inserted into the accommodating cavity 11 of the housing 10, the fastener barrel 218 is aligned with the matching fastening portion 151, and then a fastener such as a screw is passed through the fastener barrel 218 to fasten the bracket 20 to the housing 10.

In order to enhance the strength of the fastener barrel 218, preferably, the arcuate outer peripheral surface of the fastener barrel 218 is integrally formed with at least one reinforcing rib 223. Similarly, in order to enhance the strength of the battery sleeve 230, preferably, at least one reinforcing rib may also be integrally added to the arcuate outer peripheral surface of the battery sleeve 230.

As shown in Figures 2 and 4, the bracket 20 is provided with a snap portion 220, and the shell 10 is provided with a matching snap portion 161. When the bracket 20 is inserted into the accommodating cavity 11 of the shell 10, the snap portion 220 and the matching snap portion 161 engage, so that the bracket 20 and the shell 10 are matched and positioned before the fastener fixes the bracket 20 to the shell 10, so as to facilitate the next step of installation.

The buckle portion 220 and the matching buckle portion 161 may be provided in a pair, or two pairs may be provided on different sides as in the preferred embodiment of the present invention. Specifically, the buckle portion 220 of the bracket 20 is formed as a hook, and the matching buckle portion 161 on the housing 10 is formed as a hole with a matching shape and size. When the bracket 20 is inserted into a predetermined position in the housing 10, the hook can be engaged with the hole. Preferably, the hole is provided at an edge of the housing 10 adjacent to the base opening.

The utility model provides a sensor assembly integrating multiple detection functions, which can at least detect TVOC, PM2.5, temperature and humidity, and is equipped with a rechargeable battery to provide power to these components. The rechargeable battery and the two main heat sources of TVOC and PM2.5 sensors are separated from the temperature and humidity sensor by a support part, thereby avoiding the heat influence of the heat source and improving the detection accuracy of the temperature and humidity sensor.

Although the utility model is disclosed as above in the preferred embodiment, it is not intended to limit the utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the utility model. For example, in an alternative embodiment, the mounting groove on the bracket for mounting the TVOC and PM2.5 sensor 61 can also be opened laterally, or the TVOC and PM2.5 sensors are also fixed to the bracket by fasteners. In addition, in an alternative embodiment, the sensor opening 14 of the housing of the sensor assembly 1 can also be omitted, and the formaldehyde sensor can be directly installed from the base to the housing cavity 11 of the housing.

In summary, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims (10)

1. A sensor assembly, the sensor assembly comprising:

A housing forming a receiving chamber, the housing having a vent hole therein to allow air to enter the receiving chamber; and

A bracket mounted in the accommodation chamber, the bracket including a supporting portion; and

The plurality of sensors are accommodated in the accommodating cavity, and comprise a first sensor and a second sensor, wherein the first sensor is an air parameter sensor with a fan, and the second sensor is a sensor for detecting temperature;

It is characterized in that the method comprises the steps of,

The first sensor is mounted above the supporting part by the bracket, the bracket forms an air inlet area and an air outlet area, when the first sensor is mounted on the bracket, the air inlet area corresponds to an air inlet of the first sensor, and the air outlet area corresponds to an air outlet of the first sensor;

The bracket further comprises a battery sleeve for installing a rechargeable battery, the battery sleeve is fixedly arranged above the supporting part, the battery sleeve is arranged in the accommodating cavity along the vertical direction,

The second sensor is arranged below the support portion.

2. The sensor assembly of claim 1, wherein the support extends in a horizontal direction, the bracket further comprising a first chamber and an insulating chamber formed below the support,

The plurality of sensors further includes a formaldehyde sensor disposed within the first chamber,

The second sensor is disposed in the thermally insulated chamber,

And a third air heat insulation layer is arranged on one side between the first chamber and the heat insulation chamber.

3. The sensor assembly of claim 2, wherein a portion of the support forms a top of the first chamber, the portion of the support having a hollowed-out portion.

4. The sensor assembly of claim 1, wherein the support extends in a horizontal direction, an insulating chamber and a second chamber are provided below the support, the second sensor being disposed within the insulating chamber, the second chamber having a power circuit board mounted therein;

and a first air heat insulation layer is further arranged between the second chamber and the heat insulation chamber.

5. The sensor assembly of claim 4, wherein the bracket integrally forms a mounting slot for receiving the first sensor, the mounting slot forms the air inlet area and the air outlet area toward one side of the housing, the air inlet area and the air outlet area are separated by a distance, and a mis-assembly preventing device is arranged in the mounting slot,

The mounting groove is located above the heat insulation chamber and the second chamber, and a second air heat insulation layer is arranged between the mounting groove and the supporting portion.

6. The sensor assembly of claim 1 wherein said bracket further comprises an integrally formed fastener cartridge above said support portion through which fasteners pass to securely attach said housing.

7. The sensor assembly of claim 6 wherein the arcuate peripheral surface of the fastener cartridge is integrally provided with at least one stiffener and the arcuate peripheral surface of the battery sleeve is integrally provided with at least one stiffener.

8. The sensor assembly of claim 1, wherein the bracket is provided with a snap-fit portion and the housing is provided with a mating snap-fit portion, the snap-fit portion and the mating snap-fit portion snap-fit when the bracket is inserted into the receiving cavity of the housing.

9. The sensor assembly of claim 1, further comprising a screen portion and a control circuit board mounted on a side of the screen portion facing the receiving cavity,

And the control circuit board is provided with a carbon dioxide sensor.

10. The sensor assembly of any of claims 1-9, wherein the bracket is an integrally formed molded piece of non-thermally conductive plastic.