CN116429184A - Temperature and humidity sensor - Google Patents

Temperature and humidity sensor Download PDF

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Publication number
CN116429184A
CN116429184A CN202310475320.1A CN202310475320A CN116429184A CN 116429184 A CN116429184 A CN 116429184A CN 202310475320 A CN202310475320 A CN 202310475320A CN 116429184 A CN116429184 A CN 116429184A
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China
Prior art keywords
temperature
shell
filter
air
air outlet
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CN202310475320.1A
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Inventor
李强
梁强
余绍锋
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Dongguan Yimei Plastic Hardware Co ltd
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Dongguan Yimei Plastic Hardware Co ltd
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Priority to CN202310475320.1A priority Critical patent/CN116429184A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning

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  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The invention discloses a temperature and humidity sensor, which comprises a shell, a filtering piece and a temperature and humidity sensing assembly, wherein the shell comprises a first shell and a second shell, the first shell and the second shell are connected and enclose a ventilation air passage, one end of the second shell, which is far away from the first shell, is provided with an air inlet, one end of the first shell, which is far away from the second shell, is provided with an air outlet, and a mounting hole communicated with a detection cavity is arranged at the position of the first shell, which corresponds to the detection cavity; the filter element is arranged in the filter cavity and is used for filtering dust; the temperature and humidity sensing assembly comprises a temperature and humidity sensing main board and a connecting wire, wherein the temperature and humidity sensing main board is installed in the installation hole, and the temperature and humidity sensing main board is connected with external equipment through the connecting wire. According to the invention, the air is filtered through the filter element, dust in the air is removed, and the filtered air is detected through the temperature and humidity sensing main board, so that dust is not deposited, the detection precision of the temperature and humidity sensing main board is improved, and the service life of the temperature and humidity sensing main board is prolonged.

Description

Temperature and humidity sensor
Technical Field
The invention relates to the technical field of sensors, in particular to a temperature and humidity sensor.
Background
The temperature and humidity sensor is equipment or a device capable of converting the temperature and humidity into electric signals which are easy to measure and process, and is widely applied to various environments such as home and industrial equipment, and air enters the temperature and humidity sensor and is output after being detected.
Dust, dust impurities and the like are usually contained in the air, when the temperature and humidity sensor detects the dust, dust adheres to the temperature and humidity sensor, so that deposition is blocked, the detection precision of the temperature and humidity sensor to the air is affected, and meanwhile, the service life of the temperature and humidity sensor is also affected, so that the detection precision of the temperature and humidity sensor is insufficient, and the service life is short.
Disclosure of Invention
The invention mainly aims to provide a temperature and humidity sensor, which aims to solve the problems of insufficient detection precision and short service life of the existing temperature and humidity sensor.
In order to achieve the above object, the present invention provides a temperature and humidity sensor, comprising:
the shell comprises a first shell and a second shell, wherein the first shell is connected with the second shell and surrounds the second shell to form a ventilation air passage, an air inlet is formed in one end, far away from the first shell, of the second shell, an air outlet is formed in one end, far away from the second shell, of the first shell, a filter cavity communicated with the air inlet is formed in the position, close to the air inlet, of the ventilation air passage, a detection cavity communicated with the filter cavity and the air outlet is formed in the position, close to the air outlet, of the ventilation air passage, and a mounting hole communicated with the detection cavity is formed in the position, corresponding to the detection cavity, of the first shell;
the filter piece is arranged in the filter cavity and is used for filtering dust, and the extending direction of the filter piece is consistent with the direction from the air inlet to the air outlet;
the temperature and humidity sensing assembly comprises a temperature and humidity sensing main board and a connecting line, wherein the temperature and humidity sensing main board is installed in the installation hole, the temperature and humidity sensing main board faces to one side of the detection cavity and is provided with a detection terminal, the temperature and humidity sensing main board passes through the connecting line is connected with external equipment, external air enters the filter cavity from the air inlet, and enters the detection cavity after being filtered by the filter element, and the external air is output from the air outlet after being detected by the temperature and humidity sensing main board.
Preferably, the first casing includes linkage segment and filter segment, the linkage segment is kept away from the one end of second casing has been seted up the gas outlet, the filter segment with the second casing is connected and encloses into the filter chamber, the inner chamber of linkage segment is for detect the chamber, be close to on the lateral wall of linkage segment the one end in filter chamber has been seted up the mounting hole.
Preferably, one end of the connecting section, which is far away from the second shell, is provided with an air outlet, one end of the air outlet, which is far away from the second shell, is provided with an air outlet, an inner cavity of the air outlet is provided with an air outlet channel which is communicated with the air outlet and the detection cavity, and the cross section area of the air outlet channel is smaller than that of the detection cavity.
Preferably, the air outlet nozzle is in a truncated cone-shaped structure, and the cross-sectional area of the air outlet passage is gradually reduced towards the direction away from the detection cavity.
Preferably, the outer wall of the air outlet nozzle is sleeved with an inverted buckle, the inverted buckle is in a truncated cone-shaped structure, and the outer diameter of the inverted buckle is gradually reduced towards the direction away from the detection cavity.
Preferably, the filter element is a cylinder with two open ends, one end of the filter element is abutted against the second shell, the other end of the filter element is abutted against the first shell, and the filter element is surrounded by a plurality of filter units which are sequentially connected along the circumferential direction of the filter element.
Preferably, in the plurality of filtering units, part of the filtering units are first protrusions protruding outwards, the rest of the filtering units are second protrusions protruding inwards, one second protrusion is formed between any two adjacent first protrusions, and the plurality of first protrusions and the plurality of second protrusions enclose the filtering piece in a wavy annular closed structure.
Preferably, an annular abutment step is formed on the inner wall of the first housing, and an end face of the filter element, which is far away from the air inlet, abuts against the annular abutment step.
Preferably, a sealing gasket is arranged at one end of the abutting step, which faces the air inlet, the sealing gasket is an annular gasket matched with the abutting step, and one end face of the filter element, which is far away from the air inlet, is abutted with the sealing gasket.
Preferably, a positioning protrusion protruding towards the air inlet is arranged on one side of the first shell, facing the second shell, a positioning groove recessed towards the air inlet is arranged on one side of the second shell, facing the first shell, and the positioning protrusion is used for being in plug-in fit with the positioning groove.
According to the technical scheme, air enters the filter cavity from the air inlet on the second shell, dust in the air is filtered through the filter piece and then enters the detection cavity, the temperature and humidity sensing main board in the detection cavity detects the filtered air, and detection data are sent to external equipment through the connecting wire to obtain accurate temperature and humidity information.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a temperature and humidity sensor according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a front view of a temperature and humidity sensor according to an embodiment of the present invention;
FIG. 3 is a schematic bottom view of a temperature and humidity sensor according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a temperature and humidity sensor according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an explosion structure of a temperature and humidity sensor according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a filter of the temperature and humidity sensor according to an embodiment of the present invention.
Reference numerals illustrate:
Figure BDA0004205353970000031
Figure BDA0004205353970000041
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in this embodiment are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The description of the orientations of "up", "down", "front", "rear", "left", "right", etc. in the present invention is based on the orientation shown in fig. 1, and is merely for explaining the relative positional relationship between the components in the posture shown in fig. 1, and if the specific posture is changed, the directional indication is changed accordingly.
The invention provides a temperature and humidity sensor 1.
Referring to fig. 1, 4 and 5, a temperature and humidity sensor 1 of the present embodiment includes a housing 10, a filter 20 and a temperature and humidity sensing component 30, wherein the housing 10 includes a first housing 11 and a second housing 18, the first housing 11 and the second housing 18 are connected and enclose an air channel 19, an air inlet 40 is formed at one end of the second housing 18 far from the first housing 11, an air outlet 13 is formed at one end of the first housing 11 far from the second housing 18, a filter cavity 191 communicating with the air inlet 40 is formed at a position of the air channel 19 near the air inlet 40, a detection cavity 192 communicating the filter cavity 191 with the air outlet 13 is formed at a position of the air channel 19 near the air outlet 13, and a mounting hole 12 communicating with the detection cavity 192 is mounted at a position of the first housing 11 corresponding to the detection cavity 192; the filter element 20 is installed in the filter cavity 191 and is used for filtering dust, and the extending direction of the filter element 20 is consistent with the direction from the air inlet 40 to the air outlet 13; the temperature and humidity sensing assembly 30 comprises a temperature and humidity sensing main board 31 and a connecting line 32, the temperature and humidity sensing main board 31 is installed in the installation hole 12, a detection terminal is arranged on one side, facing the detection cavity 192, of the temperature and humidity sensing main board 31, the temperature and humidity sensing main board 31 is connected with external equipment through the connecting line 32, external air enters the filter cavity 191 from the air inlet 40, enters the detection cavity 192 after being filtered by the filter element 20, and is output from the air outlet 13 after being detected by the temperature and humidity sensing main board 31.
And the external equipment is a PLC intelligent terminal, such as a computer, a mobile phone and the like.
In the technical scheme of the invention, air enters the filter cavity 191 from the air inlet 40 on the second shell 18, dust in the air is filtered by the filter element 20 and then enters the detection cavity 192, the temperature and humidity sensing main board 31 in the detection cavity 192 detects the filtered air, and the detected air is output through the air outlet 13 on the first shell 11, wherein the temperature and humidity sensing main board 31 sends detection data to external equipment through a connecting wire to obtain accurate temperature and humidity information.
It should be noted that the external device may be a controller, such as a PLC controller, or various intelligent devices, such as a mobile phone, a computer, a tablet, a host, etc.
Referring to fig. 2 and fig. 4, in an embodiment, the first housing 11 includes a connection section 111 and a filter section 112, an air outlet 13 is formed at one end of the connection section 111 away from the second housing 18, the filter section 112 is connected with the second housing 18 and encloses a filter cavity 191, an inner cavity of the connection section 111 is a detection cavity 192, and a mounting hole 12 is formed at one end of a side wall of the connection section 111, which is close to the filter cavity 191. The mounting hole 12 is offered to the one end that the linkage segment 111 is close to the filter segment 112 for the air can detect through temperature and humidity sensing mainboard 31 immediately after filtering the piece 20, can not influence through other factors again, has improved detection accuracy.
Further, an air outlet nozzle 14 is formed at one end of the connecting section 111 away from the second housing 18, an air outlet 13 is formed at one end of the air outlet nozzle 14 away from the second housing 18, an air outlet air passage 141 is formed in the inner cavity of the air outlet nozzle 14 and is communicated with the air outlet 13 and the detection cavity 192, and the cross-sectional area of the air outlet air passage 141 is smaller than that of the detection cavity 192. The air outlet nozzle 14 is used for being connected with an external pipeline, so that air is purified and detected and then is input into the external pipeline for other external equipment, the cross-sectional area of the air outlet air channel 141 is smaller than that of the detection cavity 192, the air pressure at the air outlet 13 is increased, and the air flow rate is improved.
Further, the air outlet nozzle 14 has a truncated cone structure, and the cross-sectional area of the air outlet channel 141 tapers away from the detection cavity 192. The cross-sectional area of the air outlet air passage 141 is tapered in a direction away from the detection cavity 192, so that the air pressure is higher and the flow speed is faster when the air is closer to the air outlet 13, and the output efficiency of the air is improved.
In an embodiment, the outer wall of the air outlet nozzle 14 is sleeved with a back-off 142, the back-off 142 has a truncated cone structure, and the outer diameter of the back-off 142 is tapered in a direction away from the detecting cavity 192. The outer wall of the air outlet nozzle 14 is sleeved with the back-off 142, the back-off 142 can be quickly assembled into the outer hose, and meanwhile the outer hose is not easy to fall off and is more rapid to replace.
In an embodiment, the filter element 20 is a cylinder with two open ends, one end of the filter element 20 abuts against the second housing 18, the other end abuts against the first housing 11, and the filter element 20 is surrounded by a plurality of filter units 21 sequentially connected along the circumferential direction thereof. The filter element 20 is the barrel, and air flows to detection chamber 192 from the inner chamber of filter element 20 when filtering by filter element 20 after getting into filter cavity 191, and the both ends of filter element 20 respectively with first casing 11 and second casing 18 butt for filter element 20 is fixed in filter cavity 191, and filter element 20 can not rock or drop, has improved the stability of filter element 20.
Referring to fig. 5 and 6, further, among the plurality of filter units 21, some of the filter units 21 are first protrusions 22 protruding outwards, the rest of the filter units 21 are second protrusions 23 protruding inwards, a second protrusion 23 is formed between any two adjacent first protrusions 22, and the plurality of first protrusions 22 and the plurality of second protrusions 23 enclose a filter element 20 having a wavy annular closed structure. Each filter unit 21 is protruding, and a plurality of first protruding 22 and a plurality of second protruding 23 enclose into and are the annular closed structure of wave, and wave barrel and air's area of contact is bigger to improve the filter effect.
Referring to fig. 3 and 4, it should be noted that the air inlet 40 includes a plurality of sub-openings 42 and a main opening 41, the main opening 41 is disposed corresponding to the center of the cylinder, and the plurality of sub-openings 42 are disposed along the periphery of the filter 20 at intervals, so that air enters the filter cavity 191 and directly corresponds to the filter unit 21, thereby improving the filtering efficiency and the power effect.
Referring to fig. 4 and 5, in an embodiment, an annular abutment step 15 is formed on an inner wall of the first housing 11, and an end surface of the filter 20 remote from the air inlet 40 abuts against the annular abutment step 15. The abutment step 15 is arranged on the inner wall of the first shell 11, and the abutment step 15 is annular and matched with the periphery of the filter element 20, so that the filter element 20 can be conveniently assembled, and meanwhile, the stability of the filter element 20 is improved.
Further, a sealing gasket 16 is disposed at one end of the abutting step 15 facing the air inlet 40, the sealing gasket 16 is an annular gasket adapted to the abutting step 15, and an end face of the filter 20, which is far away from the air inlet 40, abuts against the sealing gasket 16. Through setting up sealing gasket 16 between filter 20 and butt step 15, prevent that the air from directly getting into detection chamber 192 from the breach because of the leakproofness is not enough not filtering through filter 20 for dust filtration in the air is complete, can not influence the detection precision of temperature and humidity sensing mainboard 31, can not lead to dust deposit simultaneously, has prolonged temperature and humidity sensor 1's life.
In an embodiment, a positioning protrusion 17 protruding toward the air inlet 40 is provided on a side of the first housing 11 facing the second housing 18, a positioning groove 181 recessed toward the air inlet 40 is provided on a side of the second housing 18 facing the first housing 11, and the positioning protrusion 17 is configured to be in plug-fit with the positioning groove 181. The positioning protrusion 17 and the positioning groove 181 allow the first housing 11 and the second housing 18 to be precisely positioned and assembled quickly. It should be noted that, after assembly, the first housing 11 and the second housing 18 are spliced by an ultrasonic welding process, the welding deformation of ultrasonic welding is small, and the welding spot strength and the strength stability are high.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. A temperature and humidity sensor, comprising:
the shell comprises a first shell and a second shell, wherein the first shell is connected with the second shell and surrounds the second shell to form a ventilation air passage, an air inlet is formed in one end, far away from the first shell, of the second shell, an air outlet is formed in one end, far away from the second shell, of the first shell, a filter cavity communicated with the air inlet is formed in the position, close to the air inlet, of the ventilation air passage, a detection cavity communicated with the filter cavity and the air outlet is formed in the position, close to the air outlet, of the ventilation air passage, and a mounting hole communicated with the detection cavity is formed in the position, corresponding to the detection cavity, of the first shell;
the filter piece is arranged in the filter cavity and is used for filtering dust, and the extending direction of the filter piece is consistent with the direction from the air inlet to the air outlet;
the temperature and humidity sensing assembly comprises a temperature and humidity sensing main board and a connecting line, wherein the temperature and humidity sensing main board is installed in the installation hole, the temperature and humidity sensing main board faces to one side of the detection cavity and is provided with a detection terminal, the temperature and humidity sensing main board passes through the connecting line is connected with external equipment, external air enters the filter cavity from the air inlet, and enters the detection cavity after being filtered by the filter element, and the external air is output from the air outlet after being detected by the temperature and humidity sensing main board.
2. The temperature and humidity sensor of claim 1 wherein the first housing comprises a connection section and a filter section, the air outlet is formed at one end of the connection section away from the second housing, the filter section is connected with the second housing and encloses the filter cavity, the inner cavity of the connection section is the detection cavity, and the mounting hole is formed at one end of the side wall of the connection section, which is close to the filter cavity.
3. The temperature and humidity sensor of claim 2, wherein an air outlet nozzle is formed at one end of the connecting section away from the second shell, the air outlet is formed at one end of the air outlet nozzle away from the second shell, an air outlet air passage is formed in an inner cavity of the air outlet nozzle and is communicated with the air outlet and the detection cavity, and the cross-sectional area of the air outlet air passage is smaller than that of the detection cavity.
4. A temperature and humidity sensor as in claim 3 wherein said outlet nozzle is of a frustoconical configuration and said outlet air passage has a cross-sectional area tapering away from said detection chamber.
5. The temperature and humidity sensor of claim 4, wherein the outer wall of the air outlet nozzle is sleeved with a back-off, the back-off is in a truncated cone-shaped structure, and the outer diameter of the back-off is gradually reduced towards a direction away from the detection cavity.
6. The temperature and humidity sensor as claimed in any one of claims 1 to 5, wherein the filter member is a cylinder body with two open ends, one end of the filter member is abutted against the second housing, the other end is abutted against the first housing, and the filter member is surrounded by a plurality of filter units sequentially connected along the circumferential direction thereof.
7. The temperature and humidity sensor according to claim 6, wherein among the plurality of filter units, part of the filter units are first protrusions protruding outwards, the rest of the filter units are second protrusions protruding inwards, one second protrusion is formed between any two adjacent first protrusions, and the plurality of first protrusions and the plurality of second protrusions enclose the filter element in a wave-shaped annular closed structure.
8. The temperature and humidity sensor as recited in claim 6 wherein an annular abutment step is formed on an inner wall of said first housing, and an end face of said filter remote from said air inlet abuts said annular abutment step.
9. The temperature and humidity sensor as recited in claim 8 wherein a sealing gasket is arranged at one end of the abutting step, which faces the air inlet, and is an annular gasket matched with the abutting step, and an end face of the filter element, which is far away from the air inlet, abuts against the sealing gasket.
10. The temperature and humidity sensor as recited in any one of claims 1 to 5, wherein a side of the first housing facing the second housing is provided with a positioning protrusion protruding toward the air inlet, a side of the second housing facing the first housing is provided with a positioning groove recessed toward the air inlet, and the positioning protrusion is configured to be in plug-fit with the positioning groove.
CN202310475320.1A 2023-04-27 2023-04-27 Temperature and humidity sensor Pending CN116429184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310475320.1A CN116429184A (en) 2023-04-27 2023-04-27 Temperature and humidity sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310475320.1A CN116429184A (en) 2023-04-27 2023-04-27 Temperature and humidity sensor

Publications (1)

Publication Number Publication Date
CN116429184A true CN116429184A (en) 2023-07-14

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CN202310475320.1A Pending CN116429184A (en) 2023-04-27 2023-04-27 Temperature and humidity sensor

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Country Link
CN (1) CN116429184A (en)

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