Air pipe type temperature and humidity transmitter

Abstract

The invention provides an air pipe type temperature and humidity transmitter, which belongs to the technical field of temperature and humidity measurement, and comprises a transmitter body, a mounting pipeline, a detection assembly, a flow guide separation assembly and a sealing cleaning assembly, the air guide shell guides different layers of airflow to enter the detection cavity in a concentrated mode, the spiral piece promotes air to be fully mixed, it is guaranteed that the air is fully mixed and separated, sample representativeness is improved, and the temperature and humidity of air reaching a detection chip are more uniform and consistent. The detection assembly can switch the state of the detection chip, and the bidirectional sealing design can prevent external impurities from entering the accommodating cavity whether the detection chip works or not, so that internal electronic components and circuits are protected; the spiral sheet can promote gas-liquid separation and is matched with the liquid guide table and the water leakage port to drain water, so that water interference is avoided; when the working state of the detection chip is switched, the cleaning wiping block can clean pollutants on the surface of the detection chip, the measurement accuracy is improved, meanwhile, the screw rod can touch the spiral piece to enable the spiral piece to vibrate to clean impurities, and stable operation of the temperature and humidity transmitter is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of temperature and humidity measurement, and in particular to a duct type temperature and humidity transmitter. Background Art

[0002] The duct temperature and humidity transmitter is an instrument that converts temperature and humidity variables into a transmittable standardized output signal. It is mainly used for measuring and controlling temperature parameters inside industrial pipelines. For example, in chemical production, many chemical reactions need to be carried out under specific temperature and humidity conditions. The transmitter can monitor the temperature and humidity conditions in the pipeline in real time. Once the temperature and humidity deviate from the preset range, the control system can immediately take corresponding measures, such as adjusting the operating power of the heating or cooling equipment, adjusting the air volume of the ventilation system, etc., to ensure that the chemical reaction can be carried out under the best environmental conditions, thereby ensuring the stability and consistency of product quality.

[0003] When the duct-type temperature and humidity transmitter in the prior art detects temperature and humidity in the pipeline environment, the probe is generally inserted into the pipeline. Since the installation position of the detection chip is fixed, once the installation is completed, the specific sampling point inside the pipeline can no longer be adjusted. The actual situation is that there are certain differences in humidity and temperature in the spaces at different heights inside some pipelines. In this case, this detection method is difficult to fully and accurately reflect the temperature and humidity distribution in the pipeline, which ultimately greatly reduces the accuracy of the monitoring results. In addition, due to the existence of the probe rod air inlet, during storage, transportation and actual use, rainwater, debris and other substances in the environment can easily enter the probe cover through the probe rod air inlet and adhere to the detection chip. The adhesion of these foreign substances may not only interfere with the probe chip's accurate perception of temperature and humidity and affect the measurement accuracy, but more seriously, it may cause substantial damage to the probe chip, thereby causing the entire temperature and humidity transmitter to fail to work properly.

[0004] How to invent a duct type temperature and humidity transmitter to solve these problems has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a duct type temperature and humidity transmitter, aiming to solve the problems mentioned in the above background.

[0006] The present invention is achieved in that: The present invention provides a duct type temperature and humidity transmitter, comprising a transmitter body and a mounting pipeline, wherein the transmitter body is composed of a display screen, a probe rod, a detection chip and a probe cover, wherein the probe rod is fixed at the lower end of the display screen, the probe cover is threadedly connected to the lower end of the probe rod, a mounting flange is slidably connected to the probe rod, a positioning bolt for limiting the mounting flange is provided on the mounting flange, the transmitter body is fixedly mounted on the mounting pipeline through the mounting flange, a plug is fixedly connected inside the probe cover, and the probe cover is divided into two areas of a receiving cavity and a detection cavity from top to bottom by the plug, and further comprises: Detection component: The detection component is arranged inside the probe cover, and the detection component is used to switch the working state of the detection chip; Diversion and separation components: The diversion and separation components are arranged on the outside and inside of the probe cover. The diversion and separation components can inhale air from different layers in the installation pipeline and separate and mix the air before detection; Sealing and cleaning component: The sealing and cleaning component is arranged inside the probe cover. The sealing and cleaning component can ensure that the inside of the accommodating cavity is relatively sealed, and cleans the surface of the detection chip and the diversion separation component when the state of the detection chip is switched.

[0007] Preferably, the detection assembly includes an electric telescopic rod fixedly connected to the inside of the probe cover, the electric telescopic rod is slidably connected to the inside of the electric telescopic rod, the outer end of the push rod is threadedly connected to a connecting circuit board, the middle part of the connecting circuit board is connected to a wire, and the mounting part of the electric telescopic rod is provided with a through hole matching the wire, and the detection chip is fixedly arranged above the bottom end surface of the connecting circuit board and is electrically connected to the connecting circuit board.

[0008] Preferably, an analysis and processing module is disposed inside the probe rod, the other end of the wire is electrically connected to the analysis and processing module, and the analysis and processing module is electrically connected to the display screen.

[0009] Preferably, the plug is provided with a through hole matching the connecting circuit board, the detection chip is arranged in a ring shape, the plug is elastically arranged, and the bottom end of the connecting circuit board when the detection chip is in the accommodating cavity is at least partially embedded in the through hole.

[0010] Preferably, the diversion and separation assembly includes an air guide shell, a water baffle and a spiral blade, the air guide shell and the water baffle are fixedly arranged on the outer wall of the probe cover, the spiral blade is fixedly arranged inside the detection cavity, an inlet is provided on the side wall of the probe cover near the lower end of the spiral blade, an outlet is provided on the side wall of the probe cover near the upper end of the spiral blade, the bottom of the probe cover is recessed inwardly and provided with a liquid guide platform, and a water leakage port is provided through the middle of the liquid guide platform.

[0011] Preferably, the outlet and the inlet are located on different sides of the probe cover, the ends of the inlet and the outlet pass through the side wall of the probe cover, the direction of the air guide shell is opposite to the flow direction of the air in the installation pipe, and the air guide shell and the inlet are on the same side.

[0012] Preferably, the air guide shell is inserted into the installation pipe from the flange connection pipe of the installation pipe along with the probe cover, and the air guide shell can cover most of the cross-section of the installation pipe.

[0013] Preferably, the sealing and cleaning assembly includes an annular airbag, a connecting rod fixedly connected to the bottom end of the circuit board, and placement cavity one and placement cavity two arranged in the plug, the side wall of the connecting rod is fixedly connected to two U-shaped rods, the bottom wall of the connecting rod is fixedly connected to a screw, the annular airbag is fixedly arranged in placement cavity one, a cleaning wipe is arranged in placement cavity two, a top block is fixedly connected to the middle of the U-shaped rod facing the connecting rod, a pressure ring is fixedly connected to the top end of the U-shaped rod, and a through hole matching the screw is arranged in the center of the spiral sheet.

[0014] Preferably, a sliding groove matching the U-shaped rod and a connecting groove matching the pressure ring are provided in the plug, the upper end of the connecting groove is connected to the bottom of the placement cavity one, the sliding groove is connected to the connecting groove on the same side, and the upper side wall of the plug is provided with an upper through groove matching the pressure ring.

[0015] Preferably, the cleaning wipe is annularly arranged, and when the detection chip is located in the detection cavity, the lower side wall of the pressure ring abuts against the upper side wall of the annular airbag, and at this time, the side wall of the annular airbag abuts against the outer side wall of the connecting circuit board above the detection chip, and when the detection chip is located in the accommodating cavity, the top of the top block abuts against the lower side wall of the annular airbag, and at this time, the side wall of the annular airbag abuts against the outer side wall of the connecting circuit board below the detection chip. The cleaning wipe is a sponge block, and the annular airbag is in an unsaturated state when the top block and the pressure ring are not in contact with the side wall of the annular airbag.

[0016] The beneficial effects of the present invention are: In the flow guide and separation component, the air guide shell guides different layers of air flow to enter the detection cavity, the spiral blades promote full mixing of the air, eliminate the temperature and humidity stratification phenomenon, and the reasonable layout of the inlet and outlet ensures full mixing and separation of the air, which improves the representativeness of the detected air sample and makes the temperature and humidity of the air reaching the detection chip more uniform, providing a high-quality air sample basis for accurate measurement; the detection component can flexibly switch the working state of the detection chip, and seal it in the containing cavity for protection when not in use to avoid long-term exposure and affecting the accuracy. The two-way sealing design of the sealing and cleaning component can prevent external impurities from entering the containing cavity regardless of whether the detection chip is working or not, protect the internal electronic components and circuits, and ensure the stability of the measurement environment, thereby ensuring the long-term stable measurement performance and accuracy of the temperature and humidity transmitter.

[0017] The spiral blades can also promote gas-liquid separation, cooperate with the liquid guide table and the drain port to reduce the moisture entering the detection area of ​​the detection chip and avoid moisture interference; when the working state of the detection chip is switched, the cleaning wiper can promptly remove pollutants on the surface of the detection chip, further reduce measurement interference factors, and improve measurement accuracy. At the same time, the screw will touch the spiral blade to make it vibrate and clean impurities, preventing the accumulation of impurities on the spiral blade from affecting the airflow guidance and mixing effects, maintaining the normal operation of the diversion separation component, and ensuring the stable operation of the entire temperature and humidity transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of a duct type temperature and humidity transmitter provided by the present invention; Figure 2 This is a schematic diagram of the structure of a duct-type temperature and humidity transmitter provided by the present invention during installation; Figure 3 This is a schematic diagram of the cross-sectional structure of an installation pipeline of a duct-type temperature and humidity transmitter provided by the present invention; Figure 4 It is a schematic diagram of the connection structure between an analysis and processing module of a duct-type temperature and humidity transmitter and a connection circuit board provided by the present invention; Figure 5 The present invention provides a duct type temperature and humidity transmitter Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of the cross-sectional structure of a probe cover of a duct-type temperature and humidity transmitter provided by the present invention when it is working; Figure 7 This is a schematic diagram of the distribution structure of the detection cavity and the accommodating cavity of a duct-type temperature and humidity transmitter provided by the present invention; Figure 8 It is a schematic diagram of a partial front cross-sectional structure of a duct-type temperature and humidity transmitter provided by the present invention when it is working; Fig. 9 It is a schematic diagram of the cross-sectional structure of a probe cover of a duct-type temperature and humidity transmitter provided by the present invention when the probe cover is not working; Fig.10 It is a schematic diagram of a partial front cross-sectional structure of a duct-type temperature and humidity transmitter provided by the present invention when not in operation; Fig.11The present invention provides a duct type temperature and humidity transmitter Fig.10 The enlarged structural diagram at B in the middle; Fig.12 It is a schematic diagram of a partial explosion structure of a duct type temperature and humidity transmitter provided by the present invention; Fig.13 The present invention provides a schematic diagram of the cross-sectional structure of a duct type temperature and humidity transmitter plug.

[0020] In the figure: 1. display screen; 2. probe rod; 3. probe cover; 4. air guide shell; 5. electric telescopic rod; 6. plug; 7. connecting rod; 8. spiral sheet; 9. annular airbag; 10. mounting flange; 11. mounting pipeline; 21. analysis and processing module; 31. detection chamber; 32. accommodating chamber; 41. water baffle; 51. push rod; 52. connecting circuit board; 53. detection chip; 54. wire; 61. placement chamber one; 62. slide groove; 63. upper through groove; 64. connecting groove; 65. placement chamber two; 71. U-shaped rod; 72. screw; 311. inlet; 312. outlet; 313. liquid guide table; 314. water leakage; 651. cleaning wipe block; 711. top block; 712. pressure ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1, refer to Figure 1-Figure 11 A duct type temperature and humidity transmitter, comprising a transmitter body and a mounting pipe 11, the transmitter body is composed of a display screen 1, a probe rod 2, a detection chip 53 and a probe cover 3, the probe rod 2 is fixed to the lower end of the display screen 1, the probe cover 3 is threadedly connected to the lower end of the probe rod 2, a mounting flange 10 is slidably connected to the probe rod 2, and a positioning bolt for limiting the mounting flange 10 is provided on the mounting flange 10. The transmitter body is fixedly mounted on the mounting pipe 11 through the mounting flange 10, a plug 6 is fixedly connected inside the probe cover 3, and the probe cover 3 is divided into two areas of a receiving cavity 32 and a detection cavity 31 from top to bottom by the plug 6, and also includes: Detection component: The detection component is arranged inside the probe cover 3, and the detection component is used to switch the working state of the detection chip 53; Diversion and separation components: The diversion and separation components are arranged on the outside and inside of the probe cover 3. The diversion and separation components can inhale the air of different layers in the installation pipe 11 and separate and mix these air before detection; Sealing and cleaning component: The sealing and cleaning component is arranged inside the probe cover 3. The sealing and cleaning component can ensure that the interior of the accommodating cavity 32 is relatively sealed, and cleans the surface of the detection chip 53 and the diversion separation component when the state of the detection chip 53 is switched.

[0023] Furthermore, the detection assembly includes an electric telescopic rod 5 fixedly connected to the inside of the probe cover 3, the inside of the electric telescopic rod 5 is slidably connected to a push rod 51, the outer end of the push rod 51 is threadedly connected to a connecting circuit board 52, when it is necessary to change the working state of the detection chip 53, the electric telescopic rod 5 is started, the internal push rod 51 starts to slide, and the sliding of the push rod 51 drives the connecting circuit board 52 to move axially, the middle part of the connecting circuit board 52 is connected to a wire 54, and the mounting portion of the electric telescopic rod 5 is provided with a through hole matching the wire 54, and the detection chip 53 is fixedly arranged on the connecting circuit board The probe rod 2 is provided with an analysis and processing module 21 inside, and the other end of the wire 54 is electrically connected to the analysis and processing module 21, and the analysis and processing module 21 is electrically connected to the display screen 1. One end of the wire 54 is connected to the detection chip 53 to obtain temperature and humidity detection data; the other end passes through the matching opening on the mounting part of the electric telescopic rod 5, enters the interior of the probe rod 2, and is electrically connected to the analysis and processing module 21. After the analysis and processing module 21 analyzes and processes the received data, the result is transmitted to the display screen 1 for display.

[0024] It should be noted that a through hole matching the connecting circuit board 52 is provided on the plug 6, the detection chip 53 is arranged in a ring shape, and the plug 6 is elastically arranged to ensure that the detection chip 53 and the connecting circuit board 52 can pass smoothly. When the detection chip 53 is in the accommodating cavity 32, the bottom end of the connecting circuit board 52 is at least partially embedded in the through hole, and the through hole is closed by the connecting circuit board 52, thereby isolating the detection chip 53 from the detection cavity 31 under the plug 6. In this way, when the temperature and humidity transmitter is not in use (for example, during warehousing, transportation, etc.), the detection chip 53 and the connecting circuit board 52 are enclosed in the accommodating cavity 32, and even if a filter cover is not provided, they can be effectively protected, thereby avoiding as much as possible the problem of the detection chip 53 being affected in accuracy or even damaged due to long-term exposure.

[0025] In this embodiment, when the working state of the detection chip 53 needs to be changed, the electric telescopic rod 5 is started, and the internal push rod 51 begins to slide. Since the outer end of the push rod 51 is threadedly connected to the connecting circuit board 52, the sliding of the push rod 51 drives the connecting circuit board 52 to move axially. The wire 54 connected to the middle part of the connecting circuit board 52 plays a key role in data transmission. One end of the wire 54 is connected to the detection chip 53 to obtain temperature and humidity detection data; the other end passes through the matching opening on the mounting part of the electric telescopic rod 5, enters the interior of the probe rod 2, and is electrically connected to the analysis and processing module 21. After the analysis and processing module 21 analyzes and processes the received data, the result is transmitted to the display screen 1 for display.

[0026] When the temperature and humidity transmitter is needed for measurement, the electric telescopic rod 5 pushes the push rod 51 and the connecting circuit board 52 to move downward, and the detection chip 53 enters the detection cavity 31 from the accommodating cavity 32. At this time, the detection chip 53 is exposed to the air in the detection cavity 31 and begins to detect the temperature and humidity of the air; when the temperature and humidity transmitter is not in use (such as storage, transportation, etc.), the electric telescopic rod 5 drives the push rod 51 and the connecting circuit board 52 to move upward, and the detection chip 53 returns to the accommodating cavity 32. The bottom end of the connecting circuit board 52 is at least partially embedded in the matching through hole on the plug 6, and the through hole is closed, thereby isolating the detection chip 53 from the detection cavity 31 below.

[0027] When the temperature and humidity transmitter is not in use, the detection chip 53 is sealed inside the accommodating cavity 32 to avoid long-term exposure to the outside. This can effectively prevent external environmental factors (such as dust, water vapor, corrosive gases, etc.) from corroding the detection chip 53, thereby avoiding as much as possible the problem of accuracy reduction or even damage caused by long-term exposure, extending the service life of the detection chip 53, and ensuring the long-term stable measurement performance of the temperature and humidity transmitter; in traditional designs, in order to prevent the influence of the external environment on the detection chip 53, it may be necessary to set up complex protective devices such as filter sleeves, while the present design, by sealing the detection chip 53 in the accommodating cavity 32 when not in use, can provide effective protection for the detection chip 53 even without a filter sleeve, simplifying the structural design of the transmitter, reducing costs and maintenance difficulties; through the effective protection of the detection chip 53, the measurement errors and equipment failures caused by environmental factors are reduced, the stability and reliability of the temperature and humidity transmitter in different environments are improved, ensuring that it can work accurately and normally when needed, and providing reliable temperature and humidity data support for related systems.

[0028] Example 2, refer to Figure 1-Figure 5The flow guide separation component includes an air guide shell 4, a water baffle 41 and a spiral sheet 8. The air guide shell 4 and the water baffle 41 are fixedly arranged on the outer wall of the probe cover 3. The water baffle 41 reduces the situation that water drops on the top of the air guide shell 4 fall into the detection cavity 31 through the outlet 312. The spiral sheet 8 is fixedly arranged inside the detection cavity 31. The side wall of the probe cover 3 near the lower end of the spiral sheet 8 is provided with an inlet 311, and the side wall of the probe cover 3 near the upper end of the spiral sheet 8 is provided with an outlet 312. When air enters from the inlet 311, a part of the air will make a spiral upward motion along the spiral sheet 8. In this process, the air constantly collides and rubs with the spiral sheet 8, and air at different levels and flow rates can be fully mixed. In this way, the air temperature and humidity stratification phenomenon that may exist in the air duct can be eliminated, and the air temperature and humidity reaching the detection chip 53 can be made more uniform, thereby improving the accuracy of temperature and humidity measurement. The bottom of the probe cover 3 is recessed inwardly and provided with a liquid guide platform 313, and a water leakage port 314 is provided in the middle of the liquid guide platform 313 to cope with the moisture that may be carried in the air. When the air containing moisture enters the detection cavity 31, under the guidance of gravity and the spiral sheet 8, the moisture will gather to the bottom along the spiral sheet 8. The liquid guide platform 313 can guide the moisture to the water leakage port 314 for discharge, so as to avoid the accumulation of moisture in the detection cavity 31 and prevent it from damaging the detection chip 53 and the internal circuit, thereby ensuring the accuracy of measurement and the normal operation of the equipment.

[0029] Furthermore, the outlet 312 and the inlet 311 are located on different sides of the probe cover 3, and the ends of the inlet 311 and the outlet 312 pass through the side wall of the probe cover 3. The direction of the air guide shell 4 is opposite to the flow direction of the air in the installation pipe 11, ensuring that the air guide shell 4 can effectively guide the air. The air guide shell 4 and the inlet 311 are on the same side. This layout allows the air to have enough travel in the detection cavity 31 for sufficient mixing and separation, reducing the situation where the airflow short-circuits or flows out without being fully mixed.

[0030] It should be noted that the air guide shell 4 is inserted into the installation pipe 11 along with the probe cover 3 from the flange connection pipe of the installation pipe 11 to ensure that it will not affect the normal installation of the transmitter body. This design not only realizes the function of the diversion separation component, but also takes into account the convenience of installation, which is convenient for users to operate and maintain in actual applications. The air guide shell 4 can cover most of the cross-section of the installation pipe 11. This design can effectively block and change the direction of the airflow, so that the air flows to the inlet 311, which can converge the originally dispersed and different layers of airflow, ensure that a sufficient amount of air enters the detection cavity 31, and improve the representativeness of the detected air sample, thereby more comprehensively reflecting the actual temperature and humidity conditions in the air duct.

[0031] In this embodiment, the direction of the air guide shell 4 is opposite to the flow direction of the air in the installation pipe 11, and is on the same side as the inlet 311, and can cover most of the cross-section of the installation pipe 11, so that the air guide shell 4 can effectively block and change the direction of the airflow, converge the originally more dispersed and different layers of airflow, and guide the air to flow to the inlet 311, ensuring that a sufficient amount of air enters the detection cavity 31. After the air enters the detection cavity 31 from the inlet 311, a part of the air will make a spiral upward motion along the spiral blade 8 fixed inside the detection cavity 31. In this process, the air constantly collides and rubs against the spiral blade 8, so that the air of different levels and flow rates can be fully mixed, effectively eliminating the air temperature and humidity stratification phenomenon that may exist in the air duct, and making the air temperature and humidity reaching the detection chip 53 more uniform.

[0032] The outlet 312 and the inlet 311 are located on different sides of the probe cover 3, and the ends of the inlet 311 and the outlet 312 pass through the side wall of the probe cover 3. This layout allows the air to have enough travel in the detection cavity 31 to be fully mixed and separated, reducing the air flow short-circuiting or flowing out without being fully mixed, ensuring that the temperature and humidity of the air flowing out of the detection cavity 31 is more stable and more representative; the water baffle 41 is fixedly set on the outer wall of the probe cover 3, reducing the occurrence of water droplets on the top of the air guide shell 4 falling into the detection cavity 31 through the outlet 312, further ensuring the dryness of the internal environment of the detection cavity 31.

[0033] By guiding the airflow through the air guide shell 4, mixing the air through the spiral blades 8, and reasonably arranging the inlet 311 and the outlet 312, the temperature and humidity of the air reaching the detection chip 53 are made more uniform and consistent, eliminating the temperature and humidity stratification phenomenon and the influence of uneven airflow, thereby significantly improving the accuracy of temperature and humidity measurement, and providing reliable data support for subsequent environmental control and data analysis; the air guide shell 4 covers most of the area of ​​the cross-section of the installation pipeline 11, and can gather a large number of airflows of different layers into the detection cavity 31, thereby improving the representativeness of the detected air sample, so that the measurement results can more comprehensively reflect the actual temperature and humidity conditions in the air duct, and help to more accurately grasp and regulate the environmental parameters in the air duct; the inlet 311 and the outlet 312 are located on different sides of the probe cover 3 and pass through the side wall, and the setting of the spiral blades 8 jointly optimizes the path and movement mode of the airflow in the detection cavity 31, so that the air can be fully mixed and separated, reducing unreasonable flow conditions such as airflow short circuit, and ensuring the efficiency and stability of the entire diversion and separation process.

[0034] When the air containing moisture enters the detection chamber 31 from the inlet 311, it makes a spiral upward motion along the spiral blade 8. During this process, the gas-liquid mixture will be affected by centrifugal force. Since the density of the liquid is greater than that of the gas, under the influence of centrifugal force, the liquid is more easily thrown to the outside of the spiral blade 8, while the gas is relatively concentrated in the inner area of ​​the spiral blade 8. This centrifugal separation effect allows the gas and liquid to be initially separated, creating favorable conditions for the subsequent water discharge; during the spiral ascent, the liquid thrown to the outside of the spiral blade 8 by the centrifugal force will flow downward along the surface of the spiral blade 8 under the action of gravity. The shape and inclination angle of the spiral blade 8 enable the liquid to move more smoothly to the bottom of the probe cover 3, further enhancing the gas-liquid separation effect. At the same time, the upward-flowing gas continues to rise along the inner side of the spiral blade 8, realizing further separation of gas and liquid in the vertical direction.

[0035] Under the guidance of gravity and the spiral blade 8, moisture will gather to the bottom along the spiral blade 8. The bottom of the probe cover 3 is recessed inward and provided with a liquid guide platform 313. The liquid guide platform 313 can guide the moisture to the leakage port 314 running through the middle thereof for discharge, thereby avoiding the accumulation of moisture in the detection cavity 31. The provision of the spiral blade 8 lengthens the movement path of the gas-liquid mixture in the detection cavity 31 and increases the residence time of the gas-liquid mixture in the cavity, which allows the gas and liquid more time to separate, thereby improving the efficiency of gas-liquid separation. Compared with the case where there is no spiral blade 8, the gas-liquid mixture can complete the separation process more fully, thereby reducing the possibility of liquid flowing out with the gas.

[0036] By promoting gas-liquid separation through the spiral blade 8, the moisture content entering the detection area of ​​the detection chip 53 can be reduced, and the interference of moisture on the detection chip 53 can be avoided, thereby improving the accuracy of temperature and humidity measurement. The presence of moisture may affect the detection chip 53's perception of temperature and humidity, resulting in deviations in the measurement results. Gas-liquid separation can effectively reduce this influence and ensure the reliability of the measurement data; the gas-liquid separation achieved by the spiral blade 8, combined with the drainage function of the liquid guide platform 313 and the leakage port 314, reduces the residual and flow of liquid in the detection cavity 31, helps to protect the detection chip 53 and the internal circuit, can better prevent liquid from infringing on equipment components, extend the service life of the temperature and humidity transmitter, and reduce maintenance costs.

[0037] Example 3, refer to Figure 4-Figure 13The sealing and cleaning component includes an annular airbag 9, a connecting rod 7 fixedly connected to the bottom end of the circuit board 52, and a placement cavity 1 61 and a placement cavity 2 65 arranged in the plug 6. The side wall of the connecting rod 7 is fixedly connected to two U-shaped rods 71, and the bottom wall of the connecting rod 7 is fixedly connected to a screw 72. The annular airbag 9 is fixedly arranged in the placement cavity 1 61, and a cleaning wiper 651 is arranged in the placement cavity 2 65. A top block 711 is fixedly connected to the middle of the U-shaped rod 71 facing the connecting rod 7, and a pressure ring 712 is fixedly connected to the top of the U-shaped rod 71. The center of the spiral sheet 8 is provided with a through hole matching the screw 72 to ensure that the screw 72 can pass through smoothly.

[0038] Furthermore, a slide groove 62 matching the U-shaped rod 71 and a connecting groove 64 matching the pressure ring 712 are provided in the plug 6. The upper end of the connecting groove 64 is connected to the bottom of the placement cavity 61, and the slide groove 62 is connected to the connecting groove 64 on the same side. An upper through groove 63 matching the pressure ring 712 is provided on the upper side wall of the plug 6 to ensure that when the connecting rod 7 moves with the connected circuit board 52, the pressure ring 712 and the top block 711 can be in normal contact with the annular airbag 9.

[0039] It should be noted that the cleaning wipe block 651 is annularly arranged, and when the detection chip 53 is located in the detection cavity 31, the lower side wall of the pressure ring 712 abuts against the upper side wall of the annular airbag 9. At this time, the side wall of the annular airbag 9 abuts against the outer side wall of the connecting circuit board 52 above the detection chip 53. When the detection chip 53 is located in the accommodating cavity 32, the top of the top block 711 abuts against the lower side wall of the annular airbag 9. At this time, the side wall of the annular airbag 9 abuts against the outer side wall of the connecting circuit board 52 below the detection chip 53, thereby achieving reliable sealing of different working positions of the detection chip 53. This two-way sealing design protects the electronic components and circuits in the accommodating cavity 32 in all directions, ensures a stable working environment, and avoids performance degradation or damage caused by interference from external factors. The cleaning wipe block 651 is a sponge block, and the cleaning wipe block 651 can During the position switching process of the detection chip 53, full contact is achieved with the annular surface of the detection chip 53 to ensure that all parts of the surface of the detection chip 53 can be effectively cleaned. This annular design can fully cover the surface of the detection chip 53, remove dust, water vapor and impurities attached thereto, and ensure that the detection accuracy and performance of the detection chip 53 are not affected. The annular airbag 9 is in an unsaturated state when the top block 711 and the pressure ring 712 are not in contact with the side wall of the annular airbag 9. This design enables the annular airbag 9 to flexibly deform under the action of the top block 711 or the pressure ring 712 according to the position change of the detection chip 53, so as to always fit closely with the connecting circuit board 52 to achieve a reliable sealing effect. No matter what working state it is in, it can ensure the effectiveness of the seal to meet the requirements of different working scenarios.

[0040] In this embodiment, when the detection chip 53 needs to move down into the detection cavity 31, the connecting circuit board 52 will move down, driving the connecting rod 7 to move downward. At this time, the U-shaped rod 71 on the side wall of the connecting rod 7 also moves down together, and the lower side wall of the pressure ring 712 is against the upper side wall of the annular airbag 9. The annular airbag 9 is squeezed and expanded. Under the squeezing action of the pressure ring 712, the annular airbag 9 is deformed, and its side wall is tightly fitted with the outer side wall of the connecting circuit board 52 above the detection chip 53, thereby achieving the sealing of the accommodating cavity 32 when the detection chip 53 is working. This can effectively prevent external air, dust, water vapor and other impurities from entering the accommodating cavity 32, thereby avoiding interference and damage to the electronic components and circuits in the accommodating cavity 32.

[0041] When the detection chip 53 moves up into the accommodating cavity 32, the connecting circuit board 52 moves upward, and the U-shaped rod 71 also rises accordingly. At this time, the top of the top block 711 abuts against the lower side wall of the annular airbag 9, and the annular airbag 9 is squeezed and expanded, and its side wall abuts against the outer side wall of the connecting circuit board 52 under the detection chip 53, thereby achieving sealing of the accommodating cavity 32 when the detection chip 53 is not working.

[0042] This bidirectional sealing design ensures that no matter the detection chip 53 is in working (in the detection cavity 31) or non-working (in the accommodating cavity 32), the accommodating cavity 32 can be reliably sealed and protected to prevent the entry of impurities such as outside air, dust, and water vapor, thereby preventing these impurities from interfering with and damaging the electronic components and circuits in the accommodating cavity 32, thereby extending the service life of the electronic components and ensuring the performance stability and measurement accuracy of the temperature and humidity transmitter. In the process of the detection chip 53 switching between the detection chamber 31 and the accommodating chamber 32, the connecting rod 7 drives the U-shaped rod 71 to slide along the slide groove 62 in the plug 6, and the cleaning wiper 651 located in the placement chamber 2 65 will contact the surface of the detection chip 53. Since the cleaning wiper 651 is a sponge block, it has good adsorption and wiping capabilities, and can effectively remove dust, water vapor, impurities and other pollutants attached to the surface of the detection chip 53, and keep these components clean. The pollutants on the surface of the detection chip 53 may affect its sensing accuracy of temperature and humidity. Through timely cleaning, the accuracy of temperature and humidity measurement can be improved, and the measurement performance of the temperature and humidity transmitter can be guaranteed; at the same time, the screw 72 at the bottom of the connecting rod 7 will also move accordingly. In this process, the thread of the screw 72 will touch the spiral piece 8. Due to the direct contact between the two, the kinetic energy of the movement of the screw 72 will The force is transmitted to the spiral piece 8 through the contact point. The transmission of this force breaks the original static state of the spiral piece 8, allowing it to obtain a certain amount of energy, thereby generating vibration. During the operation of the spiral piece 8, due to the functions of guiding the airflow and gas-liquid separation, impurities (such as water droplets, dust, etc.) will inevitably adhere to its surface, and the vibration can make the impurities attached to the surface of the spiral piece 8 be affected by external force, thereby breaking the adhesion between the impurities and the spiral piece 8. For impurities such as water droplets, the vibration can cause them to gather into larger water droplets, which are more likely to fall off the spiral piece 8 under the action of gravity, thereby realizing the cleaning of the spiral piece 8 and preventing the accumulation of impurities in the spiral piece 8 from affecting its guiding and mixing effects on the airflow. This helps to maintain the normal operation of the diversion and separation component and ensure that the air entering the detection cavity 31 can be fully mixed and separated, thereby indirectly improving the accuracy of temperature and humidity measurement.

[0043] It should be noted that any object has its own natural frequency, and the spiral piece 8 is no exception. When the thread of the screw 72 touches the spiral piece 8, if the frequency of the applied force is close to or equal to the natural frequency of the spiral piece 8, a resonance phenomenon will be triggered. The resonance will significantly increase the vibration amplitude of the spiral piece 8. Even if the force applied by the screw 72 is relatively small, the spiral piece 8 can produce obvious vibration through the resonance effect, thereby more effectively cleaning impurities. The spiral piece 8 is usually made of a material with a certain elasticity. When the thread of the screw 72 touches the spiral piece 8, the spiral piece 8 will undergo elastic deformation under the action of the force, and the stress inside the material will continue to change with the generation of elastic deformation. When the force disappears, the material will try to return to its original shape. This elastic recovery process will cause the spiral piece 8 to vibrate. This vibration based on the elasticity of the material is maintained and strengthened under the continuous contact of the screw 72.

[0044] In the actual use environment, there may be various pollutants and water vapor in the air duct. The two-way sealing design ensures that no matter the detection chip 53 is in working or non-working state, the accommodating chamber 32 can be reliably sealed, effectively preventing the entry of impurities such as external air, dust, and water vapor, and avoiding corrosion, short circuit and other damages to key components such as the analysis and processing module 21 in the chamber, extending the service life of electronic components, and ensuring the stable performance and measurement accuracy of the temperature and humidity transmitter; when the position of the detection chip 53 is switched, the cleaning wiper 651 contacts the surface of the detection chip 53, and uses the good adsorption and wiping ability of the sponge block to remove pollutants such as dust and water vapor on the surface, improve the sensing accuracy of the detection chip 53 to the temperature and humidity, and ensure the measurement performance; at the same time, when the screw 72 moves, the thread touches the spiral piece 8 to make it vibrate, which can break the adhesion between the impurities and the spiral piece 8, prompting the water droplets to gather into large water droplets and then fall off under the action of gravity, so as to realize the cleaning of the spiral piece 8, prevent the accumulation of impurities from affecting its guiding and mixing effect on the airflow, maintain the normal operation of the diversion separation component, and indirectly improve the accuracy of temperature and humidity measurement.

[0045] It should be noted that the specific model and specifications of the detection chip 53 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A duct type temperature and humidity transmitter, comprising a transmitter body and a mounting pipe (11), the transmitter body comprising a display screen (1), a probe rod (2), a detection chip (53) and a probe cover (3), the probe rod (2) being fixed to the lower end of the display screen (1), the probe cover (3) being threadedly connected to the lower end of the probe rod (2), a mounting flange (10) being slidably connected to the probe rod (2), a positioning bolt for limiting the mounting flange (10) being provided on the mounting flange (10), the transmitter body being fixedly mounted on the mounting pipe (11) via the mounting flange (10), a plug (6) being fixedly connected inside the probe cover (3), the probe cover (3) being divided from top to bottom into two areas, namely a receiving chamber (32) and a detection chamber (31), by the plug (6), wherein: Also includes: Detection component: the detection component is arranged inside the probe cover (3), and the detection component is used to switch the working state of the detection chip (53); A flow guide and separation component: the flow guide and separation component is arranged on the outside and inside of the probe cover (3), and the flow guide and separation component can inhale air from different layers in the installation pipe (11) and separate and mix the air before detection; The flow guide separation component comprises an air guide shell (4), a water baffle (41) and a spiral blade (8); the air guide shell (4) and the water baffle (41) are both fixedly arranged on the outer wall of the probe cover (3); the spiral blade (8) is fixedly arranged inside the detection cavity (31); a side wall of the probe cover (3) near the lower end of the spiral blade (8) is provided with an inlet (311); and a side wall of the probe cover (3) near the upper end of the spiral blade (8) is provided with an outlet (312); Sealing and cleaning component: The sealing and cleaning component is arranged inside the probe cover (3), and the sealing and cleaning component can ensure that the interior of the accommodating cavity (32) is relatively sealed, and cleans the surface of the detection chip (53) and the diversion separation component when the state of the detection chip (53) is switched.

2. The duct type temperature and humidity transmitter according to claim 1, characterized in that: The detection assembly comprises an electric telescopic rod (5) fixedly connected to the inside of the probe cover (3), a push rod (51) being slidably connected to the inside of the electric telescopic rod (5), an outer end of the push rod (51) being threadedly connected to a connecting circuit board (52), a middle portion of the connecting circuit board (52) being connected to a wire (54), a through opening matching the wire (54) being provided on the mounting portion of the electric telescopic rod (5), and the detection chip (53) being fixedly arranged above the bottom end surface of the connecting circuit board (52) and being electrically connected to the connecting circuit board (52).

3. The duct type temperature and humidity transmitter according to claim 2, characterized in that: An analysis and processing module (21) is disposed inside the probe rod (2), the other end of the wire (54) is electrically connected to the analysis and processing module (21), and the analysis and processing module (21) is electrically connected to the display screen (1).

4. The duct type temperature and humidity transmitter according to claim 2, characterized in that: The plug (6) is provided with a through hole matching the connection circuit board (52); the detection chip (53) is arranged in a ring shape; the plug (6) is elastically arranged; when the detection chip (53) is in the accommodating cavity (32), the bottom end of the connection circuit board (52) is at least partially embedded in the through hole.

5. The duct type temperature and humidity transmitter according to claim 1, characterized in that: The bottom of the probe cover (3) is recessed inwardly and provided with a liquid guide platform (313), and a water leakage port (314) is provided through the middle of the liquid guide platform (313).

6. The duct type temperature and humidity transmitter according to claim 1, characterized in that: The outlet (312) and the inlet (311) are located on different sides of the probe cover (3); ends of the inlet (311) and the outlet (312) penetrate the side wall of the probe cover (3); the direction of the air guide shell (4) is opposite to the flow direction of air in the installation pipe (11); and the air guide shell (4) and the inlet (311) are located on the same side.

7. The duct type temperature and humidity transmitter according to claim 1, characterized in that: The air guide housing (4) is inserted into the installation pipe (11) along with the probe cover (3) from the flange connection pipe of the installation pipe (11), and the air guide housing (4) can cover a majority of the cross-section of the installation pipe (11).

8. The duct type temperature and humidity transmitter according to claim 1, characterized in that: The sealing cleaning component comprises an annular airbag (9), a connecting rod (7) fixedly connected to the bottom end of the connecting circuit board (52), and a placement cavity 1 (61) and a placement cavity 2 (65) arranged in the plug (6), the side wall of the connecting rod (7) is fixedly connected to two U-shaped rods (71), the bottom wall of the connecting rod (7) is fixedly connected to a screw (72), the annular airbag (9) is fixedly arranged in the placement cavity 1 (61), a cleaning wiper (651) is arranged in the placement cavity 2 (65), a top block (711) is fixedly connected to the middle part of the U-shaped rod (71) facing the connecting rod (7), a pressure ring (712) is fixedly connected to the top end of the U-shaped rod (71), and a through hole matching the screw (72) is arranged in the center of the spiral sheet (8).

9. The duct type temperature and humidity transmitter according to claim 8, characterized in that: The plug (6) is provided with a slide groove (62) matching the U-shaped rod (71) and a connecting groove (64) matching the pressure ring (712); the upper end of the connecting groove (64) is communicated with the bottom of the placement cavity (61); the slide groove (62) is connected to the connecting groove (64) on the same side; and the upper side wall of the plug (6) is provided with an upper through groove (63) matching the pressure ring (712).

10. The duct type temperature and humidity transmitter according to claim 8, characterized in that: The cleaning wipe block (651) is annularly arranged. When the detection chip (53) is located in the detection cavity (31), the lower side wall of the pressure ring (712) abuts against the upper side wall of the annular airbag (9). At this time, the side wall of the annular airbag (9) abuts against the outer side wall of the connecting circuit board (52) above the detection chip (53). When the detection chip (53) is located in the accommodating cavity (32), the top of the top block (711) abuts against the lower side wall of the annular airbag (9). At this time, the side wall of the annular airbag (9) abuts against the outer side wall of the connecting circuit board (52) below the detection chip (53). The cleaning wipe block (651) is a sponge block. When the top block (711) and the pressure ring (712) are not in contact with the side wall of the annular airbag (9), the annular airbag (9) is in an unsaturated state.

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