Anti-condensation detector

Abstract

The utility model provides an anti-condensation detector which comprises a main shell and a detector body, and the main shell and the detector body are heated through an electric heating piece arranged in a base fixedly connected with the bottom face of the main shell, so that the temperature of the main shell and the temperature of the detector body are higher than the dew point temperature of ambient air. The problem that the detection result of the anti-condensation detector is affected due to the fact that water vapor in ambient air outside the anti-condensation detector is condensed when making contact with the main shell or the detector body with the low temperature and is attached to the main shell or the detector body to flow into the detector body is solved. Meanwhile, the anti-condensation detector further comprises a controller, the current environment temperature and the current relative humidity are obtained through the environment temperature and humidity detection module, the current dew point temperature is calculated and output, the wall surface temperature of the main shell is detected through the main shell surface temperature detection module and compared with the current dew point temperature, and the dew point temperature is calculated. And the electric heating sheet control module controls the on-off or output power of the electric heating sheet according to the comparison result.

Description

Technical Field

[0001] The present application relates to the field of detector technology, and in particular to an anti-condensation detector suitable for environments with relatively high humidity. Background Art

[0002] Detectors are widely used in many fields, such as fire protection engineering. However, products such as detectors used in fire protection engineering sites do not have anti-condensation functions. When used in high-humidity environments such as pipes and corridors, if the temperature of the detector itself is low, condensation may adhere to the detector main shell or penetrate into the detector body, affecting the operation of the detector, causing false alarms or equipment damage. Summary of the Invention

[0003] The present application aims to provide a method to at least solve or alleviate some of the problems existing in the prior art.

[0004] The present application provides an anti-condensation detector, comprising: a detector body; a main shell that covers and encloses at least a portion of the detector body from one side of the detector body to form an internal space; a base that is arranged on the surface of the main shell facing the detector body in a form facing the internal space; and an electric heating plate arranged on the surface of the base.

[0005] In an optional technical solution, the main shell includes a main shell bottom surface and a main shell side wall surface formed integrally with the main shell bottom surface. The main shell bottom surface and the main shell side wall surface enclose an internal space, and the base is arranged on the main shell bottom surface.

[0006] In an optional technical solution, a second internal space is formed between the base and the bottom surface of the main shell, and the electric heating plate is arranged on a side of the base opposite to the second internal space.

[0007] In an optional technical solution, the anti-condensation detector also includes: a main shell bottom surface protrusion arranged on the bottom surface of the main shell; and a base groove arranged on the base matching the shape of the main shell bottom surface protrusion; wherein the main shell bottom surface protrusion is embedded in the base groove in a detachable form.

[0008] In an optional technical solution, the anti-condensation detector further includes: a base screw hole arranged on the periphery of the base; and a main shell screw hole matching the base screw hole and arranged on the bottom surface of the main shell.

[0009] In an optional technical solution, the base includes: a base annular portion, which protrudes from the surface of the base on which the electric heating plate is provided, and annularly surrounds the electric heating plate.

[0010] In an optional technical solution, the material constituting the base is different from the material constituting the main shell, and the material constituting the base has a higher heat-resistant temperature than the material constituting the main shell.

[0011] In an optional technical solution, the anti-condensation detector also includes: a controller, wherein the controller includes: an ambient temperature and humidity detection module, which calculates and outputs the current dew point temperature based on the current ambient temperature and the current relative humidity; an electric heating plate control module, which controls the switch or output power of the electric heating plate based on the current dew point temperature output by the ambient temperature and humidity detection module.

[0012] In an optional technical solution, the controller also includes a main shell surface temperature detection module to detect the wall temperature of the main shell, and an electric heating plate control module to control the switch or output power of the electric heating plate according to the current dew point temperature and the wall temperature of the main shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of an anti-condensation detector in an embodiment of the present application.

[0014] Figure 2 Schematic cross-sectional view of the anti-condensation detector in the embodiment of the present application.

[0015] Figure 3 Schematic diagram of the module of the anti-condensation detector in the embodiment of the present application.

[0016] Figure markings: anti-condensation detector 1, detector body 101, main shell 102, base 103, electric heating plate 104, main shell bottom 1021, main shell side wall 1022, internal space 105, second internal space 106, main shell bottom protrusion 107, base groove 108, base screw hole 109, main shell screw hole 110, base annular part 111, controller 112, ambient temperature and humidity detection module 1121, electric heating plate control module 1122, main shell surface temperature detection module 1123. DETAILED DESCRIPTION

[0017] It should be noted that the working principle, characteristics and advantages of the anti-condensation detector according to the present application will be explained below in an illustrative manner, but it should be understood that all descriptions are given for illustration purposes only and should not be understood as forming any limitation on the present application.

[0018] In addition, for any single technical feature described or implied in the embodiments mentioned in this document, or any single technical feature shown or implied in the accompanying drawings, this application still allows for continued arbitrary combination or deletion between these technical features (or their equivalents) without any technical obstacles, thereby obtaining more other embodiments of the present application that may not be directly mentioned in this document.

[0019] <First embodiment>

[0020] Figure 1 This is a schematic diagram of the overall structure of an anti-condensation detector in the embodiment of the present application, see Figure 1 As shown, the anti-condensation detector 1 provided in the embodiment of the present application includes: a detector body 101 and a main shell 102.

[0021] Figure 2 This is a cross-sectional diagram of the anti-condensation detector 1 in the embodiment of the present application, see Figure 2 As shown, the anti-condensation detector 1 further includes a base 103 , and an electric heating plate 104 is provided on one side of the base 103 .

[0022] Among them, combined Figure 1 and Figure 2 As shown, the main housing 102 covers and encloses a portion of the detector body 101 from one side and extends to the outside of the detector body 101 to form an internal space 105 together with the detector body 101. The electric heating plate 104 is provided on a side surface of the base 103 facing the internal space.

[0023] Specifically, the main housing 102 includes a main housing bottom surface 1021 and a main housing sidewall surface 1022 integrally formed with the main housing bottom surface 1021. The main housing sidewall surface 1022 surrounds a portion of the detector body 101 and extends to the exterior of the detector body 101, connecting to the main housing bottom surface 1021. Together with the main housing bottom surface 1021 and the detector body 101, they form an interior space 105. The base 103 is disposed on the surface of the main housing 102 facing the detector body 101, facing the interior space 105.

[0024] Through the above embodiment, the electric heating plate 104 is fixed to the side of the bottom surface 1021 of the main housing facing the internal space 105 in the form of a surface provided on the base 103. When the anti-condensation detector 1 operates in an environment with high humidity, the electric heating plate 104 converts electrical energy into thermal energy during operation, heating the air in the internal space 105, causing the air temperature in the internal space 105 to be greater than the dew point temperature. This prevents water vapor in the internal air from condensing upon contact with the lower temperature main housing 102 or detector body 101 to form condensed water, which would adhere to the side wall surface of the main housing 102 facing the internal space 105 or the surface of the detector body 101 facing the internal space 105, thereby affecting the detection results of the anti-condensation detector. At the same time, the heat energy converted by the electric heating plate 104 is mainly conducted through air conduction, and further heats the main shell 102 and the detector body 101 of the anti-condensation detector 1 through air conduction, so that the temperature of the main shell 102 and the detector body 101 are also increased, and then higher than the dew point temperature of the external ambient air of the anti-condensation detector 1, thereby avoiding the water vapor in the external ambient air of the anti-condensation detector 1 from contacting the outer surface of the main shell 102 or the outer surface of the detector body 101 with a lower temperature and condensing, adhering to the outer surface of the main shell 102 or the detector body 101 and then flowing into the interior of the detector body 101, causing the problem of affecting the detection results of the anti-condensation detector.

[0025] In this embodiment, the internal space 105 is formed by the main shell 102 and the detector body 101. The air in the internal space 105 can be in direct contact with the detector body 101, so that the temperature of the detector body 101 itself can be maintained above the dew point temperature, thereby improving the heat transfer efficiency.

[0026] Although in this embodiment, the anti-condensation detector 1 is heated in the form of an electric heating plate 104, the present application is not limited to this. Other methods such as electric heating wires, electric heating rods or other methods of heating the internal air should also be included in the scope of protection of this application.

[0027] As a preferred embodiment of the present application, Figure 2 As shown, the anti-condensation detector 1 further has a second internal space 106 , which is formed by the base 103 and the bottom surface of the main shell 102 . The electric heating plate 104 is arranged on the side of the base 103 opposite to the second internal space 106 .

[0028] In this embodiment, the base 103 and the bottom surface 1021 of the main shell are not completely in contact with each other, and there is a certain gap between the two, forming a second internal space 106. The molecules or atoms of solids are tightly arranged and generally have higher thermal conductivity, but in comparison, the molecules of gases are relatively sparse, so their thermal conductivity is worse than that of solids. By forming the second internal space 106 between the base 103 and the bottom surface 1021 of the main shell, and arranging the electric heating plate 104 on the side of the base 103 opposite to the second internal space 106, direct contact between the base 103 and the main shell 102 is avoided, resulting in excessive heat being directly transferred to the main shell 102 when the electric heating plate 104 is working, causing the temperature of the bottom surface 1021 of the main shell to rise too quickly or be too high.

[0029] As a preferred embodiment of the present application, a main housing bottom surface 1021 of the anti-condensation detector 1 is further provided with a main housing bottom surface protrusion 107 and a base groove 108 .

[0030] Among them, the main shell bottom surface protrusion 107 is arranged on the side of the main shell bottom surface 1021 facing the detector body 101, and the base groove 108 is arranged on the base 103 in a form that matches the shape of the main shell bottom surface protrusion 107 and is engaged with the main shell bottom surface protrusion 107 in a detachable form.

[0031] Further preferably, the main housing bottom surface protrusions 107 are evenly arranged around the center of the main housing bottom surface 1021. The main housing bottom surface protrusions 107 can be formed as closed annular protrusions, discontinuous sector-shaped protrusions, or dot-shaped protrusions, without particular limitation, as long as they match the shape and position of the base groove 108.

[0032] Through the above embodiment, the main housing bottom surface protrusion 107 provided on the bottom surface 1021 of the main housing is embedded in the base groove 108. On the one hand, when the anti-condensation detector 1 is installed, the relative position between the main housing 102 and the base 103 is relatively fixed, thereby improving installation efficiency. On the other hand, the arrangement surrounding the center of the main housing bottom surface 1021 can also assist in positioning, thereby preventing the anti-condensation detector 1 from being affected by external factors during use, causing the electric heating plate 104 to shift to one side, causing the temperature on the side of the main housing 102 closer to the electric heating plate 104 to be too high, and thus affecting the detection results of the anti-condensation detector 1.

[0033] As a preferred embodiment of the present application, the periphery of the base 103 is further provided with a base screw hole 109 and a main housing screw hole 110 provided on the bottom surface 1021 of the main housing to match the base screw hole 109 .

[0034] Through the above embodiment, matching base screw holes 109 and main housing screw holes 110 are respectively provided on the periphery of the base 103 and the bottom surface 1021 of the main housing, and screws are used to securely connect the base 103 to the bottom surface 1021 of the main housing. The base 103 and the bottom surface 1021 of the main housing are securely connected in a detachable manner. When the electric heater 104 fails, the electric heater 104 can be replaced or repaired separately and more conveniently, thus avoiding the problem of using a non-detachable fixing method that affects the maintenance of the detector body 101.

[0035] Although the base 103 and the bottom surface 1021 of the main shell are fixed in the form of screws in the embodiment of the present application, the present application is not limited to this. Other settings that can fix the base 103 and the bottom surface 1021 of the main shell in a detachable manner should also be included in the scope of protection of the present application.

[0036] As a preferred embodiment of the present application, the base 103 further comprises a base annular portion 111 that protrudes from the surface of the base 103 on which the electric heating plate 104 is disposed and annularly surrounds the electric heating plate 104 .

[0037] When the electric heating plate 104 is placed in the base 103, the base annular portion 111 encloses and fixes the electric heating plate 104, thereby preventing the anti-condensation detector 1 from being affected by external factors during installation and use, causing the electric heating plate 104 to be touched, displaced, or dropped and directly contact the detector body 101, causing the main shell 102 to be closer to the side of the electric heating plate 104 or the temperature of the detector body 101 to be too high, thereby affecting the detection results of the anti-condensation detector 1 or the service life of the detector body 101.

[0038] As a preferred embodiment of the present application, the material constituting the base 103 is different from the material constituting the main shell 102 , and the material constituting the base 103 has a higher heat-resistant temperature than the material constituting the main shell 102 .

[0039] Specifically, by using a material with a higher heat resistance to form the base 103, on the one hand, the base 103 can directly contact the electric heater 104 without deformation, thus avoiding the problem that when the base 103 is formed of ordinary materials, deformation occurs under high temperature, causing the electric heater 104 to shift or fall, thereby affecting the normal use of the anti-condensation detector 1. On the other hand, by fixing the electric heater 104 with the base 103 made of high-temperature resistant material, the electric heater 104 is not in direct contact with the main housing 102, thereby reducing the heat resistance requirements of the material forming the main housing 102, thereby reducing the production cost of the main housing 102.

[0040] <Second embodiment>

[0041] The anti-condensation detector 1 of the second embodiment of the present application is described using the same names and symbols as the anti-condensation detector 1 of the first embodiment of the present application, and the contents are the same, which will not be repeated here.

[0042] Figure 3 This is a schematic diagram of the module of the anti-condensation detector in the embodiment of this application, please refer to Figure 3 As shown, the anti-condensation detector 1 involved in this embodiment further includes a controller 112, wherein the controller 112 includes: an ambient temperature and humidity detection module 1121, an electric heating plate control module 1122, and a main shell surface temperature detection module 1123.

[0043] In the embodiment of the present application, the ambient temperature and humidity detection module 1121 detects the current ambient temperature and the current ambient relative humidity in real time. After obtaining the current ambient temperature T and the current ambient relative humidity RH, the current ambient air dew point temperature T can be calculated by the Magnus-Tetens approximation method. d , the specific calculation formula is: Where a and b are constants, a=17.27, b=237.7, and r(T, RH) is a function of the ambient temperature T and the current relative humidity RH. The specific formula is:

[0044] When the current ambient temperature T and the current relative humidity RH are entered, the current ambient air dew point temperature T is calculated. d Then, the electric heating plate control module 1122 calculates the current ambient air dew point temperature T d Control the on / off time or output power of the electric heating plate 104. If the calculated current ambient air dew point temperature T d If the temperature is lower, the electric heating plate 104 is controlled to be turned on, so that the temperature of the main shell 102 and the detector body 101 of the anti-condensation detector 1 rises, thereby avoiding the problem that water vapor in the external ambient air of the anti-condensation detector 1 contacts the outer surface of the main shell 102 with a lower temperature or the exposed surface of the detector body 101 and condenses, adheres to the outer surface of the main shell 102 or the detector body 101 and flows into the interior of the detector body 101, affecting the detection result of the anti-condensation detector 1.

[0045] Although the current ambient air dew point temperature T is calculated by the Magnus-Tetens approximation method in the embodiment of the present application d However, the present application is not limited thereto. Other methods for obtaining the current ambient air dew point temperature T d For example, the current ambient temperature T, the current ambient relative humidity RH and the current ambient air dew point temperature T d Obtain the current ambient air dew point temperature T by looking up the corresponding table, or directly obtain it from the weather reportd , or dew point temperature information obtained based on other detectors such as a dew point temperature detector, should also be included in the protection scope of this application.

[0046] As a preferred embodiment of the present application, the controller 112 further includes a main housing surface temperature detection module 1123. The main housing surface temperature detection module 1123 detects the surface temperature of the main housing 102 in real time and compares the surface temperature of the main housing 102 with the calculated ambient air dew point temperature T d By comparison, when the surface temperature of the main housing 102 is higher than the ambient air dew point temperature T d When the surface temperature of the main housing 102 is lower than the ambient air dew point temperature T d When the temperature of the detector body 101 and the main shell 102 is higher than the dew point temperature T d When the temperature reaches a certain level, such as 3° C., the electric heating plate 104 is controlled to be powered off.

[0047] Specifically, when it is detected that the surface temperature of the main housing 102 is higher than the ambient air dew point temperature T d When the surface temperature of the main housing 102 is detected to be lower than the dew point temperature of the ambient air T d When the temperature of the main housing 102 is higher than the dew point temperature T, the electric heating plate 104 is controlled to start heating and continue to detect the surface temperature of the main housing 102. If the surface ... d When the temperature reaches a certain level, such as 3°C, the electric heating plate 104 is powered off. This prevents the main housing 102 from being heated when its surface temperature is higher than the ambient air dew point temperature T d When the electric heating plate 104 continues to heat, the problem of the overall temperature of the anti-condensation detector 1 being too high is avoided, and the problem of energy waste caused by turning on the electric heating plate 104 unnecessarily is avoided.

[0048] At the same time, as a further preferred embodiment, the surface temperature of the main housing 102 and the calculated ambient air dew point temperature T d The difference controls the output power of the electric heater 104. When the difference is large, the electric heater 104 is controlled to output a higher power, so that the temperature of the main shell 102 surface and the detector body 101 is quickly raised to the ambient air dew point temperature T dThe above prevents the water vapor in the ambient air outside the anti-condensation detector 1, or the water vapor in the air inside the anti-condensation detector 1, from condensing on the lower temperature main housing 102 or detector body 101 and adhering to the inner or outer surface of the main housing 102 or detector body 101, thereby affecting the detection results of the anti-condensation detector 1. When the difference is small, the electric heating plate 104 can be controlled to output a lower power to raise the temperature of the main housing 102 surface and the detector body 101 to the ambient air dew point temperature T d The above can avoid the problem that the temperature of the surface of the main shell 102 and the detector body 101 rises too quickly when a higher power is output, thereby causing the temperature of the anti-condensation detector 1 to be too high.

[0049] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An anti-condensation detector, characterized in that: include, Detector body; A main housing, covering and enclosing at least a portion of the detector body from one side of the detector body to form an internal space; a base, arranged on a surface of the main housing facing the detector body in a form facing the internal space; The electric heating plate is arranged on the surface of the base.

2. The anti-condensation detector according to claim 1, characterized in that: The main housing includes a main housing bottom surface and a main housing side wall surface integrally formed with the main housing bottom surface. The bottom surface of the main shell and the side wall surface of the main shell enclose the internal space. The base is arranged on the bottom surface of the main shell.

3. The anti-condensation detector according to claim 2, characterized in that: A second internal space is formed between the base and the bottom surface of the main shell. The electric heating plate is arranged on a side of the base opposite to the second inner space.

4. The anti-condensation detector according to claim 3, characterized in that: Also includes, The bottom surface of the main shell is convex and is arranged on the bottom surface of the main shell; The base groove is arranged on the base to match the shape of the protrusion on the bottom surface of the main shell. The bottom surface of the main shell is raised and is detachably engaged with the base groove.

5. The anti-condensation detector according to claim 3, characterized in that: Also includes, Base screw holes are arranged on the periphery of the base; The main shell screw holes are matched with the base screw holes and are arranged on the bottom surface of the main shell.

6. The anti-condensation detector according to claim 4 or 5, characterized in that: The base comprises: The base annular portion protrudes from the surface of the base on which the electric heating plate is provided, and is formed by annularly surrounding the electric heating plate.

7. The anti-condensation detector according to claim 6, characterized in that: The base is formed of a material different from that of the main housing, and the base is formed of a material having a higher heat-resistant temperature than that of the main housing.

8. The anti-condensation detector according to claim 7, characterized in that: Also included is a controller, the controller comprising: The ambient temperature and humidity detection module calculates and outputs the current dew point temperature based on the current ambient temperature and current relative humidity; The electric heating plate control module controls the switch or output power of the electric heating plate according to the current dew point temperature output by the ambient temperature and humidity detection module.

9. The anti-condensation detector according to claim 8, characterized in that: The controller further includes, The main shell surface temperature detection module detects the wall temperature of the main shell, The electric heating plate control module controls the switch or output power of the electric heating plate according to the current dew point temperature and the wall temperature of the main shell.

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