CN221572464U - Sensor assembly - Google Patents

Abstract

The utility model relates to a sensor assembly comprising: a housing forming a receiving chamber, the housing having a vent hole to allow air to enter the receiving chamber; and a bracket installed in the accommodating chamber, the bracket including a supporting part; and a sensor accommodated in the accommodation chamber, the sensor including a first sensor with a fan and a second sensor for detecting temperature, wherein the sensor is mounted above the supporting part by a bracket forming an air inlet area corresponding to an air inlet of the first sensor and an air outlet area corresponding to an air outlet of the first sensor; the cradle further includes a battery sleeve for mounting the rechargeable battery, the battery sleeve being fixedly disposed above the support portion, the battery sleeve being disposed substantially vertically within the receiving cavity, the second sensor being disposed below the support portion. The rechargeable battery and the first sensor are arranged with the two main heat sources and the second sensor vertically separated by the supporting part, so that the heat influence of the heat sources is avoided, and the detection precision of the second sensor is ensured.

Description

Sensor assembly

Technical Field

The present utility model relates to sensor assemblies, and more particularly to sensor assemblies for use in association with air conditioning equipment.

Background

The air treatment equipment generally comprises various sensors for detecting various data such as temperature, humidity, carbon dioxide content and PM2.5 concentration in the air, and feeding the data back to the air treatment equipment, and after the data are identified and judged by a processor in the air treatment equipment, the working state of the whole machine is adjusted, so that the aim of optimizing is fulfilled.

An existing sensor assembly of a stand-alone unit can be placed for use at a location remote from the main body of the air treatment device, typically in a primary area of human activity, to facilitate more accurate feedback of the air conditions in the area of activity to the air treatment device, and to enable simultaneous detection of multiple air quality influencing factors. However, as more and more electronic components including sensors, circuit boards, etc. are integrated in the housing, these components may generate heat during operation, and the sensing accuracy of existing sensor assemblies, particularly thermal sensors (e.g., temperature and humidity sensors), is not high, thereby affecting the overall performance of the sensor assembly.

Accordingly, there is a need for an improvement in the existing sensor assembly having multiple sensors that addresses the poor accuracy of detection associated with the prior art described above.

Disclosure of utility model

To overcome the deficiencies of the prior art, the present utility model provides a sensor assembly comprising: a housing forming a receiving chamber, the housing having a vent hole to allow air to enter the receiving chamber; and a bracket installed in the accommodation chamber, the bracket including a supporting part; and a plurality of sensors accommodated in the accommodation chamber, the sensors including a first sensor with a fan and a second sensor, wherein the first sensor is mounted above the supporting part by a bracket, the bracket forms an air inlet area and an air outlet area, the air inlet area corresponds to an air inlet of the first sensor when the first sensor is mounted on the bracket, and the air outlet area corresponds to an air outlet of the first sensor; the cradle further includes a battery sleeve for mounting the rechargeable battery, the battery sleeve being fixedly disposed above the support portion, the battery sleeve being disposed substantially vertically within the receiving cavity, the second sensor being disposed below the support portion.

The utility model provides a sensor component with integrated multiple detection functions, which can detect TVOC, PM2.5, temperature and humidity at least, and is provided with a rechargeable battery for providing power for the components. The rechargeable battery and the first sensor are arranged with the two main heat sources and the second sensor vertically separated by the supporting part, so that the heat influence of the heat sources is avoided, and the detection precision of the second sensor is improved.

According to one aspect of the present utility model, the support extends in a horizontal direction, the stand further includes a first chamber and a heat insulation chamber formed below the support, the plurality of sensors further includes a formaldehyde sensor disposed in the first chamber, the second sensor is disposed in the heat insulation chamber, and a third air heat insulation layer is provided at a side between the first chamber and the heat insulation chamber. Through separating the first cavity that sets up formaldehyde sensor and the thermal-insulated cavity that sets up the second sensor through the third air insulating layer, can avoid the heat that formaldehyde sensor produced effectively to influence the work precision of temperature wet sensor.

According to another aspect of the utility model, a portion of the support portion has a hollowed-out portion, and the portion having the hollowed-out portion constitutes a top wall of the first chamber. The hollow part is arranged to be favorable for the formaldehyde sensor to fully contact with the surrounding air, so that the detection precision of the formaldehyde sensor is improved.

According to another aspect of the present utility model, the support portion extends in a horizontal direction, a heat insulation chamber and a second chamber are provided below the support portion, the second sensor is provided in the heat insulation chamber, and a power circuit board is mounted in the second chamber; and a first air heat insulation layer is arranged between the second chamber and the heat insulation chamber. The provision of the first air insulating layer minimizes the impact 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 side of the mounting groove facing the housing forms an air inlet area and an air outlet area, the air inlet area and the air outlet area are separated by a distance, a mis-installation preventing device is arranged in the mounting groove, the mounting groove is positioned 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 part. On the one hand, the mounting groove can enable an installer to easily mount the first sensor, the anti-misloading device in the mounting groove can prevent the first sensor from being reversely installed, and on the other hand, the supporting part plays a role in heat insulation, and the second air heat insulation layer is additionally arranged to further isolate the heat influence of the first sensor.

According to another aspect of the utility model, the bracket further includes an integrally formed fastener cartridge located above the support portion through which the fastener is secured to the connection housing. The shell is fastened and connected through the fastener barrel, so that the influence of vibration possibly generated when the sensor assembly is used on the sensor is reduced.

According to yet another aspect of the utility model, the arcuate peripheral surface of the fastener cartridge is integrally provided with at least one reinforcing rib. The provision of the reinforcing ribs is beneficial to increasing the integrated strength of the fastener cartridge.

According to still another aspect of the present utility model, the arcuate outer peripheral surface of the battery sleeve is integrally provided with at least one reinforcing rib. The arrangement of the reinforcing ribs is beneficial to increasing the integrated strength of the battery sleeve.

According to a further aspect of the utility model, the holder is provided with a snap-in part, the housing is provided with a mating snap-in part, and the snap-in part and the mating snap-in part are snapped when the holder is inserted into the receiving cavity of the housing. In the process of installing the bracket, before the fastening piece is connected, the engagement of the fastening part and the matching fastening part is beneficial to preventing the bracket from being separated from the shell, and the operability of installation is beneficial.

According to still another aspect of the present utility model, the sensor assembly further includes a screen part and a control circuit board mounted on a side of the screen part facing the receiving chamber, the control circuit board having a carbon dioxide sensor mounted thereon.

According to yet another aspect of the utility model, the support is a molded piece integrally formed of a non-thermally conductive material. The multifunctional bracket provided by the utility model is integrally formed, the production efficiency is high, and the precision of each installation position can be ensured.

Drawings

For a more complete understanding of the present utility model, reference is made to the following description of exemplary embodiments taken in conjunction with the accompanying drawings, in which:

Fig. 1 shows a perspective view of a sensor assembly according to a preferred embodiment of the present utility model.

Fig. 2 shows a perspective view of a housing of a sensor assembly according to a preferred embodiment of the utility model.

Fig. 3 shows a perspective view of the sensor assembly with the housing removed, in accordance with a preferred embodiment of the present utility model.

Fig. 4 shows a perspective view of a bracket in a sensor assembly according to a preferred embodiment of the present utility model.

Fig. 5 shows a top perspective view of a bracket in a sensor assembly according to a preferred embodiment of the utility model.

Fig. 6 shows a front perspective view of a bracket in a sensor assembly according to a preferred embodiment of the present utility model.

Fig. 7 shows a partial front view of the housing of the sensor assembly according to the preferred embodiment of the present utility model.

Fig. 8 shows a partial front view of a switch circuit board of a sensor assembly according to a preferred embodiment of the present utility model.

List of reference numerals

1 Sensor assembly

10 Shell body

11 Accommodating chamber

12 Screen opening

13 Base opening

14 Sensor opening

15 Top wall

151 Fit fastening portion

16 Side wall

161 Matching buckle part

20 Support

201 Support portion

202 Hollowed-out part

211 Mounting groove

230 Battery sleeve

231 Notch

213 First chamber

214 Second chamber

215 Thermal insulation chamber

216 Third air insulation layer

217 Second air insulation layer

218 Fastener cartridge

219 First air insulation layer

220 Buckle part

221. Air inlet area

222. Air outlet area

223. Reinforcing rib

225. Anti-misloading device

50 Base

51 Seat cylinder

52 Notch

61TVOC and PM2.5 sensor

62. Formaldehyde sensor

63. Temperature and humidity sensor

65. Power supply circuit board

66 Switch circuit board

70 Screen part

80 Rechargeable battery

Detailed Description

The present utility model will be further described with reference to specific embodiments and drawings, in which more details are set forth in the following description in order to provide a thorough understanding of the present utility model, but it will be apparent that the present utility model can be embodied in many other forms than described herein, and that those skilled in the art may make similar generalizations and deductions depending on the actual application without departing from the spirit of the present utility model, and therefore should not be construed to limit the scope of the present utility model in terms of the content of this specific embodiment.

The sensor assembly 100 according to the present utility model is a tabletop sensor assembly for control detection of an air conditioner, and the sensor assembly 100 is typically placed on a table surface with its base in use, and thus, the terms of azimuth such as "upper", "lower", "bottom/bottom", "top/top", "front/front", and "rear/rear" herein refer to the corresponding azimuth with reference to the conventional placement position of the sensor assembly 100 in use.

Fig. 1 shows a sensor assembly 1 according to a preferred embodiment of the utility model, which sensor assembly 1 is suitable for use placed on a table top. As shown in fig. 1, the sensor assembly 1 includes a housing 10 having a side wall 15 extending in a vertical direction and a top wall 16 extending in a horizontal direction, and a screen portion 70 disposed obliquely with respect 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 top at the bottom, and can be stably placed on the table top, and on the other hand, the obliquely arranged screen portion 70 is convenient for the user to see what is displayed on the screen.

Fig. 2 shows the housing 10 of the sensor assembly 1 in isolation. The top wall 15 and the side walls 16 of the housing 10 at least partially form the receiving cavity 11. In the preferred embodiment, the housing 10 is a molded piece integrally formed of a non-thermally conductive plastic with a plurality of openings formed therein. As shown in fig. 2, the housing 10 mainly includes three openings, respectively: a screen opening 12 having a trapezoid shape for mounting the screen portion 70; a base opening 13 at the bottom of the housing 10 for engaging the base 50; and a sensor opening 14 in the sidewall 16 for mounting and replacing the sensor.

A vent is provided in a portion of the side wall 16 of the housing 10 to allow air to flow into and out of the receiving chamber 11 of the housing 10 to facilitate detection of air by the sensor in the receiving chamber 11. Preferably, the vents are arranged in an array row.

Fig. 3 shows the main components mounted inside the housing 10, and fig. 4 shows the stand 20 according to the preferred embodiment of the present utility model separately. The bracket 20 of the sensor assembly 1 is configured for mounting a plurality of sensors. Preferably, the bracket 20 is used for mounting 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 further can be used for mounting a formaldehyde sensor 62. The TVOC and PM2.5 sensor 61 typically comprises an integrated fan with corresponding air inlet and outlet portions, the fan in the sensor 61 actively drawing an air flow through the sensor body to measure the values of TVOC and PM2.5 of the air flow. Furthermore, the holder 20 of the sensor assembly 1 is also configured for mounting 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 provided in the accommodation chamber 11 of the housing 1 of the sensor assembly 1, which control circuit board is preferably mountable on the side of the screen part facing the accommodation chamber 11. In addition, the sensor assembly 1 may comprise a carbon dioxide sensor, which is preferably mounted on a control circuit board.

In particular, the support 20 of the sensor assembly 1 comprises a support 201, which support 201 is, in the preferred embodiment, a plate-like part extending horizontally, as shown in fig. 6. When the holder 20 is inserted into the accommodating chamber 11 of the housing 10, the supporting portion 201 is disposed transversely to the accommodating chamber 11 to divide the accommodating chamber 11 into upper and lower space portions

Above the support portion 201 of the stand 20, TVOC and PM2.5 sensors 61 and a battery sleeve 230 are provided. The opening of the mounting groove 211 faces upward, and the opening of the battery sleeve 230 faces the base 50.

Specifically, the TVOC and PM2.5 sensor 61 is mounted above the support 201 by the mounting groove 211 of the TVOC and PM2.5 sensor 61 on the bracket 20. The TVOC and PM2.5 sensor 61 mounting groove 211 of the bracket 20 is provided with an air inlet area 221 and an air outlet area 222 at a side facing the housing 10, corresponding to the air inlet and outlet portions of the TVOC and PM2.5 sensor 61, and preferably, the air inlet area 221 and the air outlet area 222 are spaced apart by a distance. When the TVOC and PM2.5 sensor 61 is mounted in the mounting groove of the bracket 20, the air intake area corresponds to the air intake 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. Further, as shown in fig. 5, a mis-fitting prevention device 225 is provided in the sensor mounting groove 211, and the mis-fitting prevention device 225 is configured to allow only the sensor 51 to be inserted into the sensor mounting groove 22 in one direction, thereby avoiding an error in the mounting direction of the sensor 51. The anti-misassembly device 225 is preferably two tabs 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 holder 20, and a rechargeable battery is inserted into the battery sleeve 230. As shown in fig. 3, the battery sleeve 230 is disposed substantially vertically within the accommodating chamber 11. As shown in fig. 6, the battery sleeve 230 also has a vertically extending recess 231, which recess 231 faces the screen opening 12 of the housing 1. In this way, the rechargeable battery 80 is not sealed in the battery sleeve 230, thereby facilitating heat dissipation from the battery 80. Further, the base 50 includes a seat barrel 51 for receiving an end of the rechargeable battery 80, the seat barrel 51 having a U-shaped notch 52 for a wire arrangement. In addition, there is a gap between the seat cylinder 51 of the base 50 and the bottom of the battery sleeve 230 of the stand 20, whereby a section is exposed outward between the seat cylinder 51 and the sleeve 230 after the rechargeable battery 80 is inserted into the battery sleeve 230 and the end of the battery is placed in the seat cylinder 51. Preferably, the vent holes should be eliminated or blocked on a portion of the side wall of the housing 1 adjacent to the exposed section of the rechargeable battery 80. For example, as shown in FIG. 7, the vent holes in the dashed box to the left of the side wall 16 are blocked. In this way, the sharp object is prevented from protruding into the vent hole to puncture the rechargeable battery 80, avoiding potential safety hazards.

Above the support 201 of the holder 20, the receiving chamber 11 is further provided with a switching circuit board 66 for mounting the switching 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 by wiring.

On the other hand, below the supporting portion 201, the bracket 20 is configured to mount the temperature and humidity sensor 63 and the formaldehyde sensor 62. Meanwhile, the stand 20 is also configured to mount a power circuit board 65. Specifically, the bracket 20 integrally forms a vertically extending heat insulating plate under the supporting portion 201, the heat insulating plate abutting against the inner wall surface of the housing 10 on the one hand, and the underlying base 50 on the other hand, such that the heat insulating plate, a portion of the supporting portion 201, a portion of the housing 10, and a portion of the base 50 surround the heat insulating chamber 215. A temperature and humidity sensor 63 is disposed in the thermally insulated chamber 215. A plurality of ventilation holes are provided around a portion of the housing 10 forming the heat insulating chamber 215 so that external air can enter the heat insulating chamber 215 through the ventilation holes.

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

As shown in fig. 5, in order to make the formaldehyde sensor fully contact with air, a hollow portion 202 may be provided on a portion of the supporting portion 201 at the top of the first chamber 213 where the formaldehyde sensor 62 is located. In this way, air around the formaldehyde sensor 62 can be led to the formaldehyde sensor 62 through the hollowed-out portion 202 and the vent hole on the housing 10, and fully contact the formaldehyde sensor 62 to obtain accurate measurement data.

In other alternative embodiments, if there are a sufficient number of vents in the housing 10 and there is sufficient space between the formaldehyde sensor 62 and the first chamber 213, the hollowed-out portions 202 may preferably be eliminated and the portion of the support 201 is a non-porous flat plate, thereby effectively blocking heat from the screen and the control circuit board.

In order to better insulate the heat generated by the formaldehyde sensor 62, a third air insulating layer 216 is preferably provided between the first chamber 213 and the insulating chamber 215. The third air insulating layer 216 is formed at least partially surrounded by the stand 20, specifically, the third air insulating layer 216 is a cavity surrounded by the stand 20 and the bottom 50, and the top of the first air insulating layer 216 is a part of the supporting portion 201 of the stand 20. As shown in fig. 3, a second air insulating layer 217 is further disposed between the TVOC and PM2.5 sensor 61 and the support 201, and the second air insulating layer 217 is surrounded by the bracket 20, specifically, the second air insulating layer 217 is formed by surrounding the bracket 20 as a cavity, and the bottom of the second air insulating layer 217 is a part of the support 201 of the bracket 20, so as to better insulate the heat generated by the TVOC and PM2.5 sensor 61. In addition, a first air insulating layer 219 is disposed between the insulating chamber 215 and the second chamber 214, and the air insulating layer 219 is a cavity surrounded by the bracket 20 and the bottom 50 to better insulate the heat generated by the power circuit board 214. The provision of these air insulating 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 5, the bracket 20 also includes an integrally formed fastener cartridge 218 located above the support 201. Corresponding to this, a corresponding fitting and 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 receiving chamber 11 of the housing 10, the fastener cartridge 218 is mated with the mating fastener 151, and then a fastener such as a screw is passed through the fastener cartridge 218 to fasten the bracket 20 to the housing 10.

To enhance the strength of the fastener cartridge 218, the arcuate peripheral surface of the fastener cartridge 218 is preferably integrally formed with at least one stiffener 223. Likewise, in order to enhance the strength of the battery sleeve 230, it is preferable that at least one reinforcing rib is integrally attached to the arc-shaped outer circumferential surface of the battery sleeve 230.

As shown in fig. 2 and 4, the bracket 20 is provided with a catching part 220, the housing 10 is provided with a matching catching part 161, and when the bracket 20 is inserted into the receiving chamber 11 of the housing 10, the catching part 220 and the matching catching part 161 are engaged, so that the bracket 20 and the housing 10 are cooperatively positioned before the fastening member fixes the bracket 20 to the housing 10, so as to facilitate the installation of the next step.

The latch 220 and the mating latch 161 may be provided in only one pair, and two pairs may be provided on different sides as in the preferred embodiment of the present utility model. Specifically, the fastening part 220 of the bracket 20 is formed as a fastening hook, and the matching fastening part 161 on the housing 10 is formed as a fastening hole with a shape and a size matching, and the fastening hook can be fastened into the fastening hole when the bracket 20 is inserted into a predetermined position in the housing 10. Preferably, the card hole is provided at an edge position of the housing 10 adjacent to the opening of the base.

The utility model provides a sensor component integrating multiple detection functions, which can detect TVOC, PM2.5, temperature and humidity at least, and is provided with a rechargeable battery for providing power for the components. The rechargeable battery, the TVOC and the PM2.5 sensor are arranged in a vertical separation mode through the supporting part, so that the heat influence of the heat source is avoided, and the detection precision of the temperature and humidity sensor is improved.

While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting, but rather to the utility model, as will occur to those skilled in the art, without departing from the spirit and scope of the utility model. For example, in alternative embodiments, the mounting slots on the bracket for mounting the TVOC and PM2.5 sensors 61 may also be laterally open, or the TVOC and PM2.5 sensors may also be secured to the bracket by fasteners. Furthermore, in alternative embodiments, the sensor opening 14 of the housing of the sensor assembly 1 may also be omitted, the formaldehyde sensor being mounted directly from the base into the receiving cavity 11 of the housing.

In summary, any modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model fall within the protection scope defined by the claims.

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.