CN108007593B

CN108007593B - Temperature detection device with mechanical filter

Info

Publication number: CN108007593B
Application number: CN201711222474.0A
Authority: CN
Inventors: 李明守
Original assignee: Individual
Current assignee: Yibo Communication Equipment Group Co ltd
Priority date: 2017-11-28
Filing date: 2017-11-28
Publication date: 2021-07-23
Anticipated expiration: 2037-11-28
Also published as: CN108007593A

Abstract

The invention discloses a temperature detection device configured with a mechanical filter, which comprises a filter, a temperature sensor, a control circuit and a shell. The filter comprises an energy storage part suitable for storing heat, a protruding part arranged on the energy storage part and a flaky fin part, wherein the protruding part at least protrudes out of the upper surface of the energy storage part. The energy storage part is provided with a fin part on at least one surface, and the fin part is in thermal contact with and fixed to the energy storage part. The inside of bellying is set up the blind hole form temperature measurement portion that the upper end is confined, and temperature sensor assembles with temperature measurement portion to detect the temperature of the blind end portion of temperature measurement portion. The flow of the fluid generates ultralow frequency disturbing signals with the period up to several minutes, the temperature detection device filters the ultralow frequency disturbing signals through the assembled mechanical filter and accurately detects the temperature of the fluid, so that disturbance signal interference is avoided in the heat application treatment, the fluctuation range of the fluid temperature is extremely small, the fluid temperature is easy to be stabilized at a set value, the time consumption for temperature stabilization is short, and the energy consumption is favorably saved.

Description

Temperature detection device with mechanical filter

Technical Field

The invention relates to a temperature detection device, in particular to a temperature detection device provided with a mechanical filter and applied to temperature signal detection, and belongs to the field of temperature signal detection.

Background

The fluid is heated, refrigerated and the like, the temperature distribution is uneven, a natural convection flow field is generated under the action of gravity, a large number of advection, turbulence and turbulence areas exist in the fluid, and the temperature distribution of the fluid is uneven. The fluid with uneven temperature distribution flows to generate disturbance interference signals for temperature detection, ultralow frequency disturbance signals with the period reaching the order of several minutes are formed, and the electronic filter is difficult to filter, so that the temperature of the fluid cannot be accurately measured by the temperature detection device in the prior art. Therefore, it is desirable to develop a temperature detecting device with a mechanical filter, which can filter the ultra-low frequency disturbance signal to accurately measure the temperature, so that the fluid temperature can be more easily stabilized at the set value.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a temperature detection device with a mechanical filter, which is applied to temperature signal detection and has the function of filtering ultralow frequency disturbance signals, so that the ultralow frequency disturbance signals are filtered to accurately measure the temperature, and the temperature of fluid is easily stabilized at a set value.

The technical scheme of the invention is as follows:

the utility model provides a configuration mechanical type filter's temperature-detecting device which design point lies in: the temperature detection device comprises a mechanical filter suitable for filtering ultralow frequency disturbance signals, a temperature sensor and a control circuit suitable for acquiring and processing temperature signals; the filter at least comprises an energy storage part, a convex part and a sheet-shaped fin part, wherein the energy storage part is suitable for storing heat energy and is arranged along the horizontal plane direction, the convex part is arranged on the energy storage part, and the thickness of the energy storage part is larger than that of the fin part; the convex part at least protrudes out of the upper surface of the energy storage part, and the upper surface of the convex part is positioned above the upper surface of the energy storage part; the energy storage part is provided with a plurality of fin parts on at least one surface, the fin parts are in thermal contact with the energy storage part, and the fin parts and the energy storage part are fixed, wherein the fin parts intersected with the convex part are in thermal contact with the surface of the convex part and are fixed; the inner part of the bulge part is provided with a blind hole-shaped temperature measuring part which extends along the direction vertical to the horizontal plane and is closed at the upper end, and the blind hole-shaped temperature measuring part is suitable for a temperature sensor to detect the temperature of the blind end part of the temperature measuring part; the temperature sensor is assembled with the temperature measuring part of the filter to detect the temperature of the blind end of the temperature measuring part.

In application, the invention also has the following further optional technical scheme.

Alternatively, a fin portion fixed to at least one surface of the energy accumulating portion is provided along the axial direction of the temperature measuring portion, and the fin portion is uniformly arranged around the axis of the temperature measuring portion.

Optionally, the side surface of the energy storage part is further provided with a ring-shaped fin part which is perpendicular to the axis of the temperature measuring part and surrounds the temperature measuring part in the circumferential direction, the fin part is in thermal contact with the side surface of the energy storage part, and the fin part is fixed with the side surface of the energy storage part.

Optionally, the fin portion is arranged perpendicular to a corresponding surface of the energy accumulating portion; alternatively, the fin portion is arranged obliquely to the corresponding surface of the energy accumulating portion.

Optionally, the fin part is a planar sheet; alternatively, the fin portion is a curved sheet.

Optionally, the free edge side of the fin part is rotated relative to the fixed edge side by a preset angular displacement to form a twisted sheet-shaped structure, and the area of the orthographic projection of the fin part on the surface fixed with the fin part is increased.

Optionally, the fin portions are provided with slits, and the slits of two adjacent fin portions are arranged in a staggered manner.

Optionally, the temperature detection device further includes a casing, a display screen, and a key assembly adapted to control the on/off and parameter setting of the temperature detection device, the display screen and the casing are assembled and located in the front shell of the casing, the key assembly and the control circuit are disposed in the casing, and the keys of the key assembly protrude from the surface of the casing through corresponding through holes in the casing.

Optionally, the material of the filter is any one of silver, copper, aluminum and silicon carbide.

The other technical scheme of the invention is as follows:

the utility model provides a configuration mechanical filter's temperature-detecting device based on thing networking, its design point lies in: the system comprises a mobile terminal, an Internet of things, a temperature sensor, a control circuit suitable for temperature signal acquisition and processing and a mechanical filter suitable for filtering ultralow frequency disturbance signals; the filter at least comprises an energy storage part, a convex part and a sheet-shaped fin part, wherein the energy storage part is suitable for storing heat energy and is arranged along the horizontal plane direction, the convex part is arranged on the energy storage part, and the thickness of the energy storage part is larger than that of the fin part; the convex part at least protrudes out of the upper surface of the energy storage part, and the upper surface of the energy storage part is positioned below the upper surface of the convex part; the energy storage part is provided with a plurality of fin parts on at least one surface, the fin parts are in thermal contact with the energy storage part, and the fin parts and the energy storage part are fixed, wherein the fin parts intersected with the convex part are in thermal contact with the surface of the convex part and are fixed; the inner part of the bulge part is provided with a blind hole-shaped temperature measuring part which extends along the direction vertical to the horizontal plane and is closed at the upper end, and the blind hole-shaped temperature measuring part is suitable for a temperature sensor to detect the temperature of the blind end part of the temperature measuring part; the temperature sensor is assembled with the temperature measuring part of the filter to detect the temperature of the blind end part of the temperature measuring part; the control circuit and the mobile terminal are respectively provided with a network unit, the network unit of the mobile terminal is in communication connection with the network unit of the control circuit through the Internet of things, and the mobile terminal is suitable for acquiring temperature signals detected by the temperature detection device and setting parameters of the temperature detection device.

A natural convection flow field is formed in fluid with uneven temperature distribution, disturbance interference signals are generated on temperature detection by the flow of the fluid, particularly ultra-low frequency disturbance signals with the period of up to several minutes, when the temperature of the fluid is detected by a temperature detection device in the prior art, the temperature of the fluid is detected, the ultra-low frequency disturbance signals are also detected, the ultra-low frequency disturbance signals are difficult to filter by an electronic filter, the temperature detection device cannot accurately detect the temperature of the fluid, the disturbance influence of the disturbance signals in the heat treatment processes of heating, refrigerating and the like causes the temperature of the fluid to fluctuate greatly, the temperature of the fluid is difficult to be stabilized at a preset value of the temperature, the consumed time is long, and the energy consumption is high.

Compared with the prior art, the invention has the following beneficial effects:

the temperature detection device is provided with the mechanical filter, can filter the ultralow frequency disturbance signal generated by the flow of the fluid on the temperature detection, and accurately detects the temperature of the fluid, so that the temperature detection device has no influence of the disturbance signal in the heat treatment processes of heating, refrigeration and the like, has small fluctuation amplitude of the fluid temperature, is easier to be stabilized at a preset value of the temperature, consumes short time, and is beneficial to saving energy consumption.

The temperature detection device based on the Internet of things comprises the mobile terminal, the detection device is provided with the mechanical filter, on one hand, ultralow-frequency disturbance signals generated by the flow of fluid on temperature detection can be filtered, the temperature of the fluid can be accurately detected, no disturbance signal influence exists in the heat treatment processes of heating, refrigeration and the like, the temperature of the fluid is more easily stabilized at a set value, on the other hand, the temperature of the detected fluid can be obtained from the temperature detection device through the Internet of things based on the mobile terminal, the parameter setting is carried out on the temperature detection device, the operation of the Internet of things is realized, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic diagram of a temperature detection device with a mechanical filter in an embodiment.

Fig. 2 is a perspective view of a filter.

Fig. 3 is a schematic half-sectional view of the filter of fig. 2.

Fig. 4 is a schematic top view of the filter of fig. 3.

Fig. 5 is a graph of a temperature signal directly detected by a temperature sensor.

Fig. 6 shows a graph of the temperature signal detected by the temperature sensor equipped with a filter.

Fig. 7 is a schematic diagram of a temperature detection device configured with a mechanical filter based on the internet of things in the embodiment.

The device comprises a filter 10, an energy storage part 11, a fin part 12, a temperature measuring part 13, a bulge part 14, a slit 15, a temperature sensor 20, a control circuit 30, a display screen 40, a key assembly 50 and a shell 60.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the movement, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

As an embodiment of the present invention, a temperature detection device configured with a mechanical filter, as shown in fig. 1, includes a mechanical filter 10, a temperature sensor 20, and a temperature detection device body; the temperature detection device body comprises a control circuit 30, a display screen 40, a key assembly 50 and a shell 60. The control circuit 30 is disposed on the circuit board, and the control circuit 30 is adapted to operate the temperature sensor 20 to collect a temperature signal of the fluid and process the collected temperature signal, such as performing conventional processes of amplifying, electronically filtering, a/D converting, and shaping the temperature signal, so as to obtain a digital temperature signal. The filter 10 is composed of at least a power accumulating portion 11 adapted to accumulate thermal energy, a boss portion 14 provided on the power accumulating portion 11, and a fin portion 12 in a sheet shape, as shown in fig. 2 and 3, the thickness of the power accumulating portion 11 is larger than that of the fin portion 12, and the power accumulating portion 11 is arranged in a horizontal plane direction. The energy storage part 11 is provided with a protruding part 14, as shown in fig. 3, the protruding part 14 extends upwards along the upper surface of the energy storage part 11, which can be understood as protruding out of the upper surface of the energy storage part 11, and the upper surface of the protruding part 14 is located above the upper surface of the energy storage part 11. At least one surface of the energy accumulating portion 11, such as the upper surface, is provided with a plurality of fin portions 12, the plurality of fin portions 12 are in thermal contact with the surface of the energy accumulating portion 11, and the fin portions 12 and the energy accumulating portion 11 are fixed. The temperature measuring part 13 suitable for temperature measurement is arranged inside the protruding part 14, as shown in fig. 1 and 3, the temperature measuring part 13 is a structure with a closed upper end and a round blind hole shape extending downwards along the axial direction of the protruding part 14, it can be understood that the round blind hole extends along the direction perpendicular to the horizontal plane direction, and is suitable for the temperature sensor 20 to measure the temperature of the blind end part of the temperature measuring part 13. The blind end of the temperature measuring part 13 is positioned in the energy storage part 11, the influence of disturbance is small, the filtering effect is favorably improved, and the temperature of the blind end is used as the temperature of the fluid. The filter 10 is used to filter the ultra-low frequency disturbing signals present in the fluid, the period of the disturbing signals is as high as tens of seconds, even as high as several minutes, and the electronic filter is extremely difficult to filter. The housing 60 may alternatively be a hollow shell-like structure in the shape of a hexahedral box, and as shown in fig. 1, the shell surface closest to the reader is referred to as the front shell portion of the housing. Control circuit 30 and key assembly 50 are mounted inside housing 60. The display screen 40 is mounted on the front shell of the casing 60, located above the front shell, and electrically connected with the control circuit 30; the keys of the key assembly 50 protrude from a predetermined through hole of the front case portion located below the casing 60 and protrude therefrom to be pressed by a user, as shown in fig. 1. The packaging structure of the temperature sensor 20 is matched with the round blind hole serving as the temperature measuring part 13, and can be packaged into a cylindrical structure, and the sensing part of the temperature sensor 20 for detecting temperature is packaged at the top end part of the cylindrical structure. The temperature sensor 20 and the temperature measuring part 13 of the filter 10 are assembled, and as shown in fig. 1, the temperature sensor 20 is positioned in a blind hole as the temperature measuring part 13, and the tip of the temperature sensor 20 is attached to the blind end of the temperature measuring part 13 (i.e., the tip of the temperature measuring part 13 shown in fig. 3) to detect the temperature of the blind end of the temperature measuring part 13, and the temperature is set as the temperature of the fluid to be measured. The temperature sensor 20 is fixed to the filter 10, and the temperature sensor 20 and the control circuit 30 are electrically connected by a wire. The material of the filter is copper, and any one of silver, aluminum and silicon carbide or a combination of two or more of the materials can be selected.

As shown in fig. 2 and 3, the mechanical filter 10 includes at least a charge portion 11 adapted to charge thermal energy, a protrusion portion 14 provided on the charge portion 11, and a fin portion 12 having a sheet shape, and the charge portion 11 has a thickness larger than that of the fin portion 12. The energy storage part 11 is in a disc shape and is arranged along the horizontal plane direction as shown in fig. 2 and 3; in addition, the energy storage portion 11 may be a plate structure having a rectangular parallelepiped shape, or other structures as needed. The energy storage part 11 is provided with a convex part 14, as shown in fig. 3, the convex part 14 extends upwards from the upper surface of the energy storage part 11 along a direction perpendicular to the horizontal plane, it can be understood that the convex part 14 protrudes out of the upper surface of the energy storage part 11, and the upper surface of the energy storage part 11 is located below the upper surface of the convex part 14. In order to improve the filtering effect and facilitate the assembly of the temperature sensor, further, the protrusion 14 extends downward from the lower surface of the energy storage portion 11 in a direction perpendicular to the horizontal plane, which can be understood as protruding from the lower surface of the energy storage portion 11, and the lower surface of the energy storage portion 11 is located above the lower surface of the protrusion 14. Thus, the boss 14 penetrates the energy accumulating portion 11. The protruding part 14 can be selected to be cylindrical so as to be adapted to the disc-shaped energy storage part 11, and the protruding part 14 and the energy storage part 11 are coaxial and are in an axisymmetric structure. The temperature measuring portion 13 suitable for temperature measurement is disposed inside the protruding portion 14, as shown in fig. 1 and 3, the temperature measuring portion 13 is a structure with a closed upper end extending downward along the axial direction of the protruding portion 14 and is in a shape of a round blind hole, which can be understood as extending downward from the inside of the upper end of the protruding portion 14 along the direction perpendicular to the horizontal plane direction, penetrating through the lower end surface of the protruding portion 14 to form the above round blind hole, and is suitable for the temperature sensor 20 to measure the temperature of the blind end of the temperature measuring portion 13. The convex part 14, the energy storage part 11 and the temperature measuring part 13 are all in an axisymmetric structure. The blind end of the temperature measuring part 13 is positioned in the energy storage part 11, the influence of disturbance is small, the filtering effect is favorably improved, and the temperature of the blind end is used as the temperature of the fluid, so that the temperature of the fluid is accurately measured. A plurality of fin portions 12 are provided on at least one surface of the energy accumulating portion 11, for example, a plurality of fin portions 12 are provided on an upper surface of the energy accumulating portion 11, the plurality of fin portions 12 are in thermal contact with the upper surface of the energy accumulating portion 11, and the fin portions 12 are fixed to the upper surface of the energy accumulating portion 11; wherein the above-described fin portion 12 intersecting the boss portion 14 is in thermal contact with the surface of the boss portion 14 and is fixed to the outer surface (i.e., top surface, side surface) of the boss portion 14. The plurality of fin portions 12 are uniformly arranged around the axis of the temperature measuring portion 13, for example, in a radial shape, i.e., the fin portions 12 are arranged in the radial direction of the temperature measuring portion 13. The radial uniform arrangement is understood to be an equiangular spacing distribution, i.e. the angular distances between any two adjacent fin portions 12 are equal relative to the axis of the thermometric portion 13.

Further, a plurality of fin portions 12 (not shown) are disposed on a side surface of the energy accumulating portion 11, the plurality of fin portions 12 are arranged along an axial direction of the energy accumulating portion 11, the plurality of fin portions 12 are uniformly arranged around the axis of the energy accumulating portion 11, the fin portions 12 are arranged along a radial direction of the energy accumulating portion 11 and are distributed in a radial shape, the plurality of fin portions 12 are in thermal contact with the side surface of the energy accumulating portion 11, the fin portions 12 and the energy accumulating portion 11 are fixed, and the fin portions 12 are perpendicular to the side surface of the energy accumulating portion 11. The energy storage part 11 and the fin part 12 may be fixed by integral molding or welding. The fin 12 is a planar sheet. The cylindrical boss 14 may be replaced by a polygonal prism structure, such as a quadrangular prism, a hexagonal prism, or the like. The fin portion 12 may be a sheet having a curved surface, such as an arc surface or an irregular curved surface, and the fin portion 12 may be perpendicular to the surface of the energy storage portion 11, i.e., a tangent plane of a curved surface element fixed to the energy storage portion 11 may be perpendicular to the surface of the energy storage portion 11.

It should be noted that the fins 12 on the upper surface of the energy accumulating portion 11 may also be arranged in parallel, such as evenly distributed, which may be understood as an equal-pitch distribution, i.e. the distance between any two adjacent fins 12 is equal. The surfaces of the fin portions 12 and the energy accumulating portion 11 at the joint are perpendicular to each other, and the fin portions 12 are perpendicular to the upper surface of the energy accumulating portion 11. In addition, the fin portion 12 may be inclined to the upper surface of the energy storage portion 11, and an included angle between the fin portion 12 and the upper surface of the energy storage portion 11 may be, for example, 10 to 20 degrees, which is an included angle between a plane direction of the fin portion 12 and a plane direction of the surface of the energy storage portion 11, that is, an included angle between the two planes. The inclined arrangement of the fin portion 12 is advantageous for optimizing the thermal action of the fluid and the filter, improving the filtering effect and miniaturizing the filter.

The fluid is subjected to heat treatment, such as heating, refrigeration and the like, the temperature distribution of the fluid is uneven, the fluid with uneven temperature distribution generates natural convection under the action of gravity, a large number of horizontal flow regions, turbulent flow regions and turbulent flow regions are formed in the fluid, and the position distribution of a fluid temperature field is particularly like hilly landforms and is not smooth. The flow of the fluid generates disturbance signals for temperature detection, particularly ultralow frequency disturbance signals with the period reaching the order of several minutes, and the electronic filter is difficult to filter, so that the temperature signals detected by the temperature sensor contain a large number of disturbance signals, the temperature of the fluid cannot be accurately measured, and the disturbance signals interfere and influence in the heat treatment process, so that the temperature of the fluid fluctuates greatly, the temperature of the fluid is difficult to be stabilized at a set value of the temperature, and the stabilization of the temperature at the set value requires a long time, thereby increasing the energy consumption.

The filtering principle of the filter 10 is as follows: the energy storage part 11 is used for storing heat energy, absorbing temperature disturbance signals generated by fluid flow with uneven temperature distribution, particularly ultra-low frequency disturbance signals with the period up to several minutes order, through complex heat transfer processes such as heat absorption, heat storage and heat release, and realizing a filtering function. For example, the fluid slowly flows to the filter 10 of the detection device, and along with the flow of the fluid, when the fluid with a temperature wave crest smoothes the filter, the fluid with a higher temperature thermally contacts with the fin part 12 of the filter and exchanges heat, the fin part 12 absorbs heat, the temperature of the end part of the fin part 12 rises, the fluid transfers heat to the energy storage part 11, the energy storage part 11 absorbs heat, the local temperature of the connection part with the fin part 12 rises, as the energy storage part 11 has the capacity of storing heat, the heat brought by the fluid with the temperature wave crest is absorbed and stored, a temperature field is re-established, the temperature of the outer boundary of the filter 10 is higher than the temperature of the energy storage part 11, the temperature of the blind end part serving as the temperature measurement part 13 does not rise obviously, and the temperature of the position is still in a stable state; when the fluid with the temperature wave troughs contacts the filter, the fluid with the lower temperature contacts with the fin parts 12 of the filter and exchanges heat, the fin parts 12 release heat, the temperature of the end parts of the fin parts 12 is reduced, the energy storage part 11 transmits the heat to the fluid through the fin parts 12, the local temperature of the connection part with the fin parts 12 is reduced, as the energy storage part 11 stores heat energy, the heat energy is gradually released along with the arrival of the fluid with the temperature wave troughs, a temperature field is reestablished, the temperature of the outer boundary of the filter 10 is lower than the temperature of the energy storage part 11, the temperature of the blind end part serving as the temperature measuring part 13 is not obviously reduced, and the temperature of the position is still in a stable state; the temperature field is repeatedly reconstructed by the filter through the thermal process, but the temperature of the end part of the blind hole serving as the temperature measuring part 13 has no obvious change, and the filter filters disturbance temperature signals generated when the fluid with uneven temperature distribution flows through complex heat transfer processes such as heat absorption, heat storage, heat release and the like, so that the temperature of the fluid is accurately detected. The filter has a certain volume, the volume of the energy storage part 11 and the fin part 12 is related to the specific heat capacity of the material, the fluctuation amplitude of the fluid disturbance temperature signal and the frequency of the disturbance signal, generally speaking, the smaller the specific heat capacity, the larger the fluctuation amplitude and the lower the frequency of the disturbance signal, the larger the volume of the energy storage part 11 is, and conversely, the smaller the volume of the energy storage part 11 is. The total volume of the filter, the structures of the energy storage part and the fin part can be measured in an experimental mode, and on the premise of meeting the filtering requirement, the required material is the minimum, the volume is the minimum, the filter is not a technical scheme required to be protected, and the details are not further described.

In order to more intuitively display the filtering effect, the inventor designs a simulation temperature field to illustrate the filtering performance of the filter. A plurality of parallel heating rods are uniformly arranged on the experiment platform along the horizontal plane direction, the heating power of each heating rod is the same, and the heating rods heat air fluid. When the temperature distribution of the air fluid is stable, the temperature sensor slowly moves above the heating rod along the horizontal direction vertical to the heating rod at a uniform speed so as to simulate the air fluid to flow to a detection point of the temperature sensor and generate a disturbance signal for the detection point. The temperature signal directly detected by the temperature sensor is shown in fig. 5, which includes the temperature signal of the air fluid and the disturbance signal of the temperature. The fluctuation amplitude of the temperature disturbance signal is as high as 2.9 ℃, and the fluctuation amplitude is very large; the period of the temperature disturbance signal is as high as 2.0 minutes, belongs to the ultralow frequency disturbance signal and is difficult to filter by an electronic filter. The filter and the temperature sensor are assembled, the temperature sensor moves uniformly in the same direction at the same height from the heating rod and at the same speed, and the temperature signal detected by the temperature sensor through the filter has a curve as shown in fig. 6, wherein the curve shows that the fluctuation amplitude of the temperature signal is extremely small and less than 0.3 ℃, so that the filter has a strong filtering effect on ultralow frequency disturbance signals, and the temperature sensor can accurately detect the temperature of the fluid. In addition, the filter can be optimized and designed in an experimental mode, so that the filter is matched with the ultralow frequency disturbing signal to be filtered, if the ultralow frequency disturbing signal is matched with the fluctuation amplitude and the period of the ultralow frequency disturbing signal, the temperature signal detected by the filter does not comprise the disturbing signal of the temperature, the temperature of the fluid can be detected more accurately, and the optimized design of the filter is not a protection point of the invention and is not detailed.

As an alternative, the difference from the filter 10 is that a plurality of fin portions 12 are provided on the lower surface of the energy accumulating portion 11, as shown in fig. 2 and 3, the plurality of fin portions 12 are uniformly distributed around the axis of the energy accumulating portion 11, for example, in a radial shape, the fin portions 12 are attached to the lower surface of the energy accumulating portion 11, the fin portions 12 are in sufficient thermal contact with the lower surface of the energy accumulating portion 11, the fin portions 12 are fixed to the lower surface of the energy accumulating portion 11, and the fin portions 12 are perpendicular to the lower surface of the energy accumulating portion 11. The fin 12 intersecting the boss 14 is in thermal contact with the surface of the boss 14, and the fin 12 is fixed to the surface of the boss 14 located below the energy accumulating portion 11. Thus, the raised portion 14 is located in the middle of the space defined by the outer boundaries of the fin portions 12, and the temperature measuring portion 13 is located in the middle of the space, as the blind end portion of the temperature measuring portion 13 is located in the center of the space. By the design, the filtering effect with the filter is improved, more importantly, the assembly mode of the filter is more flexible, and the influence of the assembly mode on the filtering effect is less.

Alternatively, the filter 10 is different from the filter 10 in that an annular fin portion 12 (not shown) is disposed on a side surface of the energy storage portion 11, the annular fin portion 12 is perpendicular to an axis of the energy storage portion 11, and the annular fin portion 12 surrounds the axis of the energy storage portion 11 along a circumference of the side surface thereof to form an annular sheet structure, such as an annular fin portion. The annular fin portions 12 are sequentially inserted through the respective fin portions 12 provided on the side surface of the energy accumulating portion 11, and the respective fin portions 12 are fixed to the annular fin portions 12 in thermal contact therewith. The annular fin portion 12 is in contact with the side surface of the energy accumulating portion 11, and as shown in fig. 2 and 3, the annular fin portion 12 is in sufficient thermal contact with the side surface of the energy accumulating portion 11, and the annular fin portion 12 is fixed to the side surface of the energy accumulating portion 11. The annular fin portion 12 is disposed perpendicular to a side surface of the energy accumulating portion 11. By the improvement, the filtering effect of the filter can be improved.

As an alternative, the difference with the above-mentioned filter 10 is that the above-mentioned fin portion 12 is provided with one or more elongated slits 15, as shown in fig. 2 and 4, it can be understood that the length of the slit is much larger than the width thereof, for example, the length-width ratio is more than 10 times. In addition, notches can be arranged on the fin parts 12, and the aspect ratio of the notches is equivalent, such as the ratio is 1-2; a gap between the slit and the gap may also be provided. The slits 15 in any two adjacent fin units 12 are offset from each other as shown in fig. 2 and 4, and it can be understood that the orthogonal projection of the slit 15 in one fin unit 12 on the other fin unit 12 does not overlap the slit 15 in the other fin unit 12. The slits 15 in the fin portion 12 are advantageous in improving the response time of the filter and improving the filtering effect, particularly in filtering disturbance signals at ultra-low frequencies.

As an alternative, the difference from the above-mentioned filter 10 is that the free side of the fin portion 12 is rotated by a predetermined angular displacement relative to the fixed side to form a twisted sheet structure, so as to increase the area of the orthographic projection of the first fin portion 12 on the surface fixed thereto. For example, the fin portion 12 on the upper surface of the energy accumulating portion 11 is twisted, and it is understood that the free edge side of the fin portion 12 on the top side is rotated by a predetermined angular displacement, for example, an angular displacement of 5 degrees, with respect to the fixed edge side on the bottom side thereof, to form a twisted sheet (not shown) with smoothly deformed boundaries, and the orthographic projection area of the fin portion 12 on the upper surface of the energy accumulating portion 11 is increased, and the orthographic projection area may be made to cover the upper surface of the energy accumulating portion 11 as needed. For another example, the upright fin portion 12 on the side surface of the energy storage portion 11 may be twisted, and it may be understood that the free edge side of the fin portion 12 on the outer side is rotated by a predetermined angular displacement, such as an angular displacement of 8 degrees, relative to the fixed edge side on the inner side, to form a twisted sheet (not shown in the figure) with smoothly deformed boundary, and the orthographic projection area of the fin portion 12 on the side surface of the energy storage portion 11 is increased, and the orthographic projection area may cover the upper surface of the energy storage portion 11 according to design requirements. By the arrangement, the flow path of the fluid flowing to the energy storage part is changed, the thermal action process of the fluid, the fin part and the energy storage part is enhanced, the temperature response time of the filter is shortened, and the filtering effect of the filter is improved.

In a specific application, the filter 10 can be assembled and fixed with the body of the temperature detection device according to requirements, and is understood to be a one-piece structure. For example, room temperature control: the temperature detection device equipped with the mechanical filter is electrically connected with a controller of the air conditioner, detects the room temperature, and maintains the temperature of the room temperature at a set value. In this case, the temperature detection device equipped with the filter 10 and configured with a mechanical filter is installed indoors, detects the temperature of the indoor air, and the controller of the air conditioner acquires the temperature and controls the operation of the air conditioner, such as cooling. When the room temperature is higher than the set value, the air conditioner is operated to blow out cold air, the indoor air is cooled, the temperature distribution of the air is uneven, a large number of advection, turbulence and turbulent flow areas are generated, a convection flow field is formed, the convection flow field generates temperature interference signals for temperature detection, if the temperature sensor directly detects the temperature of the air, temperature signals containing the disturbance signals are detected, and the fluctuation amplitude of the detected temperature signals is large. If the controller of the air conditioner operates the air conditioner to run and refrigerate based on the temperature signal directly detected by the temperature sensor, the detected disturbance signal is amplified due to thermal inertia delay of an air conditioning system, so that the indoor air generates a large temperature fluctuation amplitude, such as a temperature amplitude of 3-5 ℃, and the temperature of the indoor air is difficult to be stabilized at a set value, and the temperature is stabilized at the set value for a long time, such as 3-5 minutes, so that the energy consumption is increased. The temperature of indoor air is collected by adopting a temperature detection device provided with a mechanical filter, the filter 10 is assembled on the temperature sensor, the filter 10 filters air convection to generate disturbance signals, the temperature of the air is accurately detected, a controller of the air conditioner controls the air conditioner to operate on the basis of the temperature signals detected by the temperature detection device, the disturbance signal interference influence is avoided, the fluctuation range of the temperature of the air is extremely small, the temperature of the air is more easily stabilized at a set value, the consumed time is shorter, and the energy consumption is favorably saved.

It should be noted that the position of the air conditioner relative to the temperature measuring point, the air supply mode, the air supply size, the indoor object, the indoor space size, and the like of the air conditioner all generate disturbance influence on the indoor temperature field, so that a large number of advection field regions, turbulence field regions, and turbulence field regions are generated in the indoor air, which causes the temperature field distribution of the indoor air to be uneven, and the position of the temperature field is very uneven, such as hilly landscape. The air flow of the above-mentioned configuration temperature field generates a temperature interference signal to the detection point at a fixed position, the period of the temperature interference signal is related to the flow rate of the air, the period is from several seconds to several minutes, the frequency is very low, the temperature interference signal is nominally an ultra-low frequency temperature interference signal, and the electronic filter is extremely difficult to filter. The temperature detection device provided with the mechanical filter can well filter the ultralow frequency interference signal, realize accurate temperature measurement, avoid the phenomenon that the room temperature fluctuates greatly due to the overshoot of the air conditioner caused by the interference signal, ensure that the room temperature is more easily stabilized at a set value, shorten the consumed time and be beneficial to saving energy consumption.

In a specific application, the mechanical filter 10 may be disposed separately from the temperature detecting device body, as required, which may be understood as a split structure. For example, heating a liquid: the temperature detector with mechanical filter is electrically connected with the controller of the heater to heat the liquid and maintain the temperature of the liquid at the set value. In this case, the temperature detection device body is disposed outside the liquid, the temperature sensor equipped with the filter 10 is disposed in the liquid, and the temperature of the liquid is detected. After the liquid is heated, the temperature distribution is uneven, a convection flow field is generated, the liquid flow generates a disturbance signal for detecting the temperature, if the temperature sensor directly detects the temperature, the disturbance signal is detected, the fluctuation amplitude of the detected temperature signal is large, the controller of the heater controls the heater to heat based on the temperature signal directly detected by the temperature sensor, and the disturbance signal is amplified due to the thermal inertia delay of the system, so that the liquid generates large temperature fluctuation amplitude, such as 3-5 ℃ fluctuation amplitude, the temperature of the liquid is difficult to be stabilized at a set value, and long time is required, such as 2-4 minutes, and the energy consumption is increased; the filter 10 is assembled on the temperature sensor of the temperature detection device, the filter 10 can filter an ultralow frequency disturbance signal generated by liquid flow, the temperature of the liquid can be accurately detected, the heater is controlled by the controller of the heater to heat based on the temperature signal detected by the detection device, disturbance signal interference is avoided, the temperature fluctuation range of the liquid is extremely small, the temperature of the liquid is convenient to stabilize at a set value, the consumed time is short, and if the consumed time is 0.5-1.0 minute, the energy consumption is favorably saved.

It should be noted that the shape, the installation position, the structure of the container, etc. of the heater all generate disturbance influence on the liquid temperature field, so that a advection field region, a turbulence field region and a turbulence field region are generated in the liquid, and the temperature field of the liquid is not uniformly distributed and is very uneven, thereby forming a liquid flow field. The flow of the liquid generates temperature interference signals to detection points in the liquid, the period of the temperature interference signals is related to the flow rate of the liquid, the period is from several seconds to several minutes, the frequency is very low, the temperature interference signals are called ultra-low frequency disturbance signals, and an electronic filter is extremely difficult to filter.

As another embodiment of the present invention, a technical content different from the above-described embodiment will be mainly described in this embodiment.

A temperature detection device configured with a mechanical filter based on the internet of things, as shown in fig. 7 and fig. 1, the temperature detection device includes a mechanical filter 10, a temperature sensor 20, a control circuit 30, a display screen 40, a key assembly 50, a mobile terminal 70 and the internet of things 80. The filter 10 is used for filtering the ultra-low frequency disturbing signal generated in the fluid to be measured. The control circuit 30 is adapted for temperature signal acquisition, processing and manipulation data transmission. The filter 10 is composed of at least a power accumulating portion 11 adapted to accumulate thermal energy, a boss portion 14 provided on the power accumulating portion 11, and a fin portion 12 in a sheet shape, as shown in fig. 2 and 3, the thickness of the power accumulating portion 11 is larger than that of the fin portion 12, and the power accumulating portion 11 is arranged in a horizontal plane direction. The energy storage part 11 is provided with a protruding part 14, as shown in fig. 3, the protruding part 14 extends upwards along the upper surface of the energy storage part 11, which can be understood as protruding out of the upper surface of the energy storage part 11, and the upper surface of the energy storage part 11 is located below the upper surface of the protruding part 14. The energy storage portion 11 has a plurality of fin portions 12 provided on at least one surface thereof, the plurality of fin portions 12 are in thermal contact with the surface of the energy storage portion 11, and the fin portions 12 and the energy storage portion 11 are fixed. Wherein the fin portion 12 crossing the boss portion 14 is in thermal contact with the surface of the boss portion 14, and the fin portion 12 is fixed to the boss portion 14. The temperature measuring portion 13 suitable for temperature measurement is disposed inside the protruding portion 14, as shown in fig. 1 and 3, the temperature measuring portion 13 is a structure with a closed upper end extending along the axial direction of the protruding portion 14 and a round blind hole shape, and it can be understood that the temperature measuring portion 13 is a round hole extending downward from the lower side of the upper end surface of the protruding portion 14 along the direction perpendicular to the horizontal plane direction and penetrating through the lower end surface of the protruding portion 14. The temperature measuring part 13 is adapted to the temperature sensor 20 to measure the temperature of the blind end of the temperature measuring part 13. The blind end of the temperature measuring part 13 is positioned in the energy storage part 11, the influence of disturbance is small, the filtering effect is favorably improved, and the temperature of the blind end is used as the temperature of the fluid. The temperature sensor 20 may be packaged in a cylindrical structure, that is, the structure of the temperature sensor 20 is matched with the structure of the temperature measuring part 13, and the sensing part of the temperature sensor 20 for detecting temperature is packaged at the top end of the cylindrical structure, as shown in fig. 1. The temperature sensor 20 is assembled with the temperature measuring part 13 of the filter 10, the temperature sensor 20 is positioned in the temperature measuring part 13, the top end part of the temperature sensor 20 is attached to the blind end part of the temperature measuring part 13 (namely, the top surface part of the temperature measuring part 13 shown in fig. 3), and the sensing part of the temperature sensor 20 corresponds to the energy storage part 11, namely, the sensing part of the temperature sensor and the energy storage part are at the same height and are opposite. The temperature sensor 20 detects the temperature of the blind end of the temperature measuring unit 13, i.e., the temperature inside the energy storing unit 11. The blind end of the temperature measuring part 13 is positioned in the energy storage part 11, and is slightly influenced by fluid disturbance, so that the filtering effect is favorably improved, and the temperature of the fluid is accurately measured. The control circuit 30 is internally provided with a network unit, is suitable for establishing communication connection between the control circuit and the internet of things 80, and is used for controlling signal and data transmission; the mobile terminal 70 is provided with a built-in network unit, which is suitable for establishing communication connection between the mobile terminal and the internet of things 80, and is used for controlling signal and data transmission. The network unit of the mobile terminal 70 establishes communication connection with the network unit of the control circuit 30 through the internet of things 80, and is suitable for mutual signal transmission between the mobile terminal 70 and the control circuit 30, the mobile terminal 70 obtains a temperature signal detected by the measuring device and sets parameters of the measuring device, and the measuring device can be controlled to start and stop through the mobile terminal 70, so that internet of things control is realized, convenience is provided for users, and the working efficiency is improved.

Under the action of gravity, the fluid with uneven temperature distribution generates natural convection, and a large number of horizontal flow regions, turbulent flow regions and turbulent flow regions are formed in the fluid, so that the position distribution of a fluid temperature field is particularly like a hilly landform, and is uneven in height. The flow of the fluid generates disturbance signals on the temperature detection point, particularly ultralow frequency disturbance signals with the period reaching the order of several minutes, and the electronic filter is difficult to filter and cannot accurately measure the temperature of the fluid. The detected ultra-low frequency disturbance signal is responded by heating devices such as a heater, an air conditioner and the like, and the disturbance signal is amplified into temperature fluctuation with large fluctuation amplitude, so that the fluid temperature is difficult to be stabilized at a set value, long time is required for stabilizing the temperature at the set value, and the energy consumption is increased.

Compared with the prior art, the invention has the following remarkable technical progress.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the foregoing description only for the purpose of illustrating the principles of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, specification, and equivalents thereof.

Claims

1. A temperature detection device provided with a mechanical filter is characterized in that: the temperature detection device comprises a mechanical filter suitable for filtering ultralow frequency disturbance signals, a temperature sensor and a control circuit suitable for acquiring and processing temperature signals; the filter at least comprises an energy storage part, a convex part and a sheet-shaped fin part, wherein the energy storage part is suitable for storing heat energy and is arranged along the horizontal plane direction, the convex part is arranged on the energy storage part, and the thickness of the energy storage part is larger than that of the fin part; the convex part at least protrudes out of the upper surface of the energy storage part, and the upper surface of the convex part is positioned above the upper surface of the energy storage part; the energy storage part is provided with a plurality of fin parts on at least one surface, the fin parts are in thermal contact with the energy storage part, and the fin parts and the energy storage part are fixed, wherein the fin parts intersected with the convex part are in thermal contact with the surface of the convex part and are fixed; the inner part of the bulge part is provided with a blind hole-shaped temperature measuring part which extends along the direction vertical to the horizontal plane and is closed at the upper end, and the blind hole-shaped temperature measuring part is suitable for a temperature sensor to detect the temperature of the blind end part of the temperature measuring part; the temperature sensor is assembled with the temperature measuring part of the filter to detect the temperature of the blind end of the temperature measuring part.

2. The temperature detection device with a mechanical filter according to claim 1, wherein: the fin part fixed on at least one surface of the energy storage part is arranged along the axial direction of the temperature measuring part, and the fin part is uniformly arranged around the axis of the temperature measuring part.

3. The temperature detection device with a mechanical filter according to claim 1, wherein:

the side surface of the energy storage part is also provided with an annular fin part which is perpendicular to the axis of the temperature measuring part and surrounds the temperature measuring part in the circumferential direction, the annular fin part is in thermal contact with the side surface of the energy storage part, and the annular fin part is fixed with the side surface of the energy storage part.

4. The temperature detection device with a mechanical filter according to claim 1, wherein: the fin part is vertically arranged with the corresponding surface of the energy storage part; alternatively, the fin portion is arranged obliquely to the corresponding surface of the energy accumulating portion.

5. The temperature detection device with a mechanical filter according to claim 4, wherein: the fin part is in a planar sheet shape; alternatively, the fin portion is a curved sheet.

6. The temperature detection device with a mechanical filter according to claim 1, wherein: the free side of the fin part rotates relative to the fixed side by a preset angular displacement to form a twisted sheet structure, and the area of the orthographic projection of the fin part on the fixed surface of the fin part is increased.

7. The temperature detection apparatus with a mechanical filter according to any one of claims 1 to 6, wherein: the fin parts are provided with slits, and the slits on two adjacent fin parts are arranged in a staggered mode.

8. The temperature detection apparatus with a mechanical filter according to any one of claims 1 to 6, wherein: the temperature detection device further comprises a shell, a display screen and a key assembly suitable for controlling the startup and shutdown of the temperature detection device and setting parameters, the display screen and the shell are assembled and located on the front shell of the shell, the key assembly and the control circuit are arranged in the shell, and keys of the key assembly protrude out of the surface of the shell through corresponding through holes in the shell.

9. The temperature detection device with a mechanical filter according to claim 8, wherein: the filter is made of any one of silver, copper, aluminum and silicon carbide.