Humidity generating device

Abstract

The invention provides a humidity generating device which comprises a constant-temperature box, a humidity sensor and a humidity sensor. The saturation assembly is located at the bottom of a constant-temperature cavity of the constant-temperature box and used for saturating air. The first heater is located in the constant-temperature cavity, located above the saturation assembly and used for heating air; and the circulating fan is located in the constant-temperature cavity and located above the first heater, and the circulating fan is used for guiding air passing through the first heater to circularly flow in the constant-temperature box. The constant-temperature box is provided with the closed constant-temperature cavity, so that an additional air output source is not needed, air in the constant-temperature cavity only needs to be guided to circularly flow through the circulating fan, meanwhile, the air humidity and the air temperature are adjusted through the first saturation assembly and the first heater, and the air in the constant-temperature cavity cannot escape to the external environment; and additional equipment is not needed for supplementing air to the constant-temperature box, a compressor is not needed for outputting air, and the problems that the air output by the compressor is prone to being mixed with oil, and the energy consumption of the compressor is high are solved.

Description

Technical Field

[0001] The present application belongs to the technical field of humidity measurement, and in particular, relates to a humidity generating device. Background Art

[0002] A humidity generator is a device used to accurately generate and control humidity. It can be used to calibrate and test humidity sensors or other humidity-related instruments. It can also be used to create an environment with a specific humidity for testing.

[0003] However, the current humidity generator needs to generate air through an air compressor, but the air generated by the compressor is not clean and is easily mixed with oil, and the compressor has high energy consumption.

[0004] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Summary of the invention

[0005] The embodiments of the present application provide a humidity generating device to solve or alleviate one or more technical problems in the prior art.

[0006] A first aspect of an embodiment of the present application provides a humidity generating device, comprising:

[0007] A thermostatic box having a closed constant temperature chamber;

[0008] A saturation component, located at the bottom of the constant temperature chamber of the constant temperature box, used for saturating the air;

[0009] a first heater, located in the constant temperature chamber and above the saturation component, for heating air;

[0010] A circulation fan is located in the constant temperature chamber and above the first heater. The circulation fan is used to guide the air passing through the first heater to circulate in the constant temperature box.

[0011] Optionally, a distance between the first heater and the circulation fan is smaller than a distance between the first heater and the saturation component.

[0012] Optionally, the constant temperature box is a rectangular box body, and the box body includes a first side wall, a second side wall, a top wall and a bottom wall opposite to each other;

[0013] A baffle is connected between the first side wall and the second side wall, the baffle is spaced apart from the top wall and the bottom wall, and the baffle and the first side wall are surrounded to form an adjustment channel;

[0014] Wherein, the first heater is accommodated in the regulating channel.

[0015] Optionally, the saturation component comprises:

[0016] a basin containing water;

[0017] a second heater, immersed in the water basin, for heating the water in the water basin;

[0018] an evaporator, located between the first heater and the second heater, for condensing water in the air passing through the evaporator;

[0019] The second heater cooperates with the evaporator to saturate the air so that the air in the constant temperature chamber reaches a target dew point temperature.

[0020] Optionally, the saturation component further includes an automatic water replenishment component, which is connected to the bottom of the water basin and is used to continuously replenish water to the water basin.

[0021] Optionally, the humidity generating device further comprises a temperature control component, and the temperature control component comprises:

[0022] A temperature controller electrically connected to the second heater and the evaporator;

[0023] a dew point temperature sensor, located between the evaporator and the first heater and electrically connected to the temperature controller, the dew point temperature sensor being used to send the current dew point temperature of the air in the constant temperature chamber to the temperature controller;

[0024] The temperature controller controls the opening and closing of the second heater and the evaporator respectively according to the current dew point temperature and the target dew point temperature.

[0025] Optionally, the temperature control component further comprises an air temperature sensor, which is located at the air outlet of the circulating fan and is used to send the current temperature of the air passing through the circulating fan to the temperature main controller;

[0026] The temperature controller controls the on and off of the first heater according to the current temperature and the target temperature.

[0027] Optionally, the humidity generating device further includes a calibration component, which is connected to the constant temperature chamber and is used to receive the air in the constant temperature chamber, and the calibration component is used to calibrate a dew point detector.

[0028] Optionally, the calibration component comprises:

[0029] A sampling tube, one end of which is connected to the constant temperature chamber, and the other end of which is used to be connected to the air inlet end of the uncalibrated dew point detector;

[0030] An air return pipe, one end of which is connected to the constant temperature chamber, and the other end of which is connected to the air outlet of the uncalibrated dew point detector, and is used to transport the air passing through the uncalibrated dew point detector back to the constant temperature chamber;

[0031] Wherein, the uncalibrated dew point detector is calibrated by the dew point temperature detected by the uncalibrated dew point detector and the actual dew point temperature.

[0032] Optionally, a gas pump is provided in the sampling tube, and the gas pump is used to continuously output the air in the constant temperature chamber to the uncalibrated dew point detector.

[0033] The above technical solution adopted in the embodiment of the present application may have the following advantages:

[0034] The thermostatic box has a closed constant temperature chamber, so there is no need for an additional air output source to output air in the thermostatic box. It is only necessary to guide the air circulation in the constant temperature chamber through the circulating fan, and at the same time increase the air humidity through the first saturation component and increase the air temperature through the first heater. The air in the constant temperature chamber will not escape to the external environment, so there is no need for additional equipment to replenish air to the thermostatic box, and there is no need to use a compressor to output air, which alleviates the problem that the air output by the compressor is easily mixed with oil and the compressor has high energy consumption.

[0035] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0037] Figure 1 A schematic structural diagram of a humidity generating device provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] Constant temperature box 10; first heater 30; circulating fan 40; automatic water replenishment component 60; baffle 15; adjustment channel 17; water basin 21; second heater 22; evaporator 23; temperature controller 51; dew point temperature sensor 52; air temperature sensor 53; sampling tube 71; return air pipe 72. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the accompanying drawings, for clarity, the sizes of layers, regions, elements and their relative sizes may be exaggerated. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as the second element, component, region, layer or part. When the second element, component, region, layer or part is discussed, it does not indicate that the present application necessarily has the first element, component, region, layer or part.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] In the present application, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values ​​in the numerical interval is considered to be continuous, and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to an integer in the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be merged. In other words, unless otherwise specified, the numerical range disclosed in the present application should be understood to include any and all sub-ranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. "Numerical interval" allows for broadly including quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0045] The following provides an explanation of the terms used in this application.

[0046] Saturation refers to the increase in the amount of water (water vapor) in the air.

[0047] Humidity refers to the water content in the air. Humidity can be expressed in many ways, such as mixing ratio, water vapor partial pressure, relative humidity, dew point temperature, etc.

[0048] The mixing ratio refers to the ratio of the mass of water vapor contained in moist air to the mass of dry air in which it coexists.

[0049] Water vapor partial pressure refers to the pressure of water vapor in the total pressure of humid air.

[0050] Relative humidity refers to the ratio of the mole fraction of water vapor in humid air to the mole fraction of saturated water vapor on the surface of pure water at the same temperature and pressure.

[0051] Dew point temperature refers to the temperature at which the water vapor pressure in the air reaches the saturated vapor pressure at a certain temperature when the wet air is gradually cooled while the water vapor pressure remains unchanged. When the air is further cooled, if there is a smooth surface in the air, the water vapor will condense into dew drops on the surface. This temperature is called the dew point temperature. The temperature at which condensation occurs when the air is cooled is called the dew point temperature.

[0052] When the air temperature is above the dew point temperature, the relative humidity (the ratio of the current water vapor pressure in the air to the saturated water vapor pressure at that temperature) is usually less than 100%. As the air temperature increases, the relative humidity decreases, and vice versa.

[0053] A humidity generator is a device used to accurately generate and control humidity. It can be used to calibrate and test humidity sensors or other humidity-related instruments. It can also be used to create an environment with a specific humidity for testing.

[0054] However, the current humidity generator needs to generate air through an air compressor, but the air generated by the compressor is not clean and is easily mixed with oil, and the compressor has high energy consumption.

[0055] The embodiment of the present application provides a humidity generating device. Based on this, the problem that the air in the thermostat is easily mixed with oil and the energy consumption of using a compressor to generate air is high is alleviated. See below for details.

[0056] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein.

[0057] See also Figure 1 The embodiment of the present application provides a humidity generating device, which includes a constant temperature box 10, a saturation group, a first heater 30 and a circulating fan 40. The following is a detailed description:

[0058] The thermostatic box 10 has a closed thermostatic chamber. The thermostatic chamber is mainly used to maintain a constant temperature environment to ensure the temperature of the air inside the box is stable and reduce the impact of external temperature fluctuations on the internal air temperature. The thermostatic chamber can be used to accommodate experimental samples to test the changes in various indicators of the experimental samples under specific humidity and temperature conditions.

[0059] The saturation component is located at the bottom of the constant temperature chamber of the constant temperature box 10 and is used to saturate the air. That is, the saturation component is used to humidify the air.

[0060] The first heater 30 is located in the constant temperature chamber and above the saturation component, and is used to heat the air. The first heating component is used to heat the saturated air so that the actual temperature of the air is greater than the dew point temperature, so that the air can maintain the humidity level and reduce the condensation of water vapor in the air and the decrease in humidity.

[0061] The circulating fan 40 is located in the constant temperature chamber and above the first heater 30. The circulating fan 40 is used to guide the air passing through the first heater 30 to circulate in the constant temperature box 10. The circulating fan 40 ensures that the air is evenly distributed inside the constant temperature box 10 by forcing the air to flow, thereby avoiding uneven temperature and humidity. In addition, the circulating fan 40 can recirculate the air heated by the heater to the saturated component, thereby improving the humidity control effect of the air and ensuring that the air in the constant temperature box 10 is in a uniform and stable state.

[0062] In the embodiment of the present application, the thermostat 10 has a closed thermostat chamber, so there is no need for an additional air output source to output air in the thermostat 10. It is only necessary to guide the air in the thermostat chamber to circulate through the circulating fan 40, and at the same time increase the air humidity through the first saturation component and increase the air temperature through the first heater 30. The air in the thermostat chamber will not escape to the external environment, so there is no need for additional equipment to replenish air to the thermostat 10, and there is no need to use a compressor to output air, which alleviates the problem that the air output by the compressor is easily mixed with oil and the compressor has high energy consumption.

[0063] In an optional embodiment, the distance between the first heater 30 and the circulation fan 40 is smaller than the distance between the first heater 30 and the saturation component.

[0064] A small distance between the first heater 30 and the circulation fan 40 can help prevent the air near the heater from being overheated. If the circulation fan 40 is far away from the heater, hot air may accumulate around the first heater 30, causing local overheating. In addition, a certain distance between the first heater 30 and the saturation component can prevent the temperature generated by the first heater 30 from affecting the saturation component.

[0065] In an optional embodiment, the constant temperature box 10 is a rectangular box body, and the box body includes a first side wall, a second side wall, a top wall and a bottom wall that are opposite to each other.

[0066] A baffle 15 is connected between the first side wall and the second side wall. The baffle 15 is spaced apart from the top wall and the bottom wall. The baffle 15 and the first side wall are surrounded to form an adjustment channel 17 .

[0067] The regulating channel 17 contains the first heater 30 .

[0068] The regulating channel 17 can guide the air to circulate inside the thermostat 10. By controlling the air flow path, the humidity in the thermostat 10 can be evenly distributed to avoid excessively high or low humidity in some areas. At the same time, the regulating channel 17 can also prevent water vapor from blowing directly onto the experimental sample, thereby providing a more uniform test environment.

[0069] Specifically, the saturation component can be disposed at the bottom of the thermostat 10 and below the adjustment channel 17 .

[0070] Hot air (i.e. water vapor generated after heating) has the characteristic of naturally rising. Placing the saturated component at the bottom can make it easier for the water vapor generated in the saturated component to diffuse upward and more easily contact with the air circulating in the constant temperature chamber.

[0071] In an optional embodiment, the saturation component includes a water basin 21 , a second heater 22 and an evaporator 23 .

[0072] Water is contained in the water basin 21. The water in the water basin 21 is heated and evaporated into water vapor to saturate the air.

[0073] The second heater 22 is immersed in the water basin 21 and is used to heat the water in the water basin 21. Specifically, the second heater 22 can be an electric heating tube, a plate heater, a fin heater, etc. Exemplarily, the electric heating tube can be directly immersed in water, and the current passes through the electric heating wire to generate heat to heat the surrounding water. The heating speed is fast and easy to control, so as to control the amount of water vapor generated.

[0074] The evaporator 23 is located between the first heater 30 and the second heater 22 , and is used to condense water in the air passing through the evaporator 23 .

[0075] The evaporator 23 is used to condense water vapor in the air. It is understood that the water vapor directly heated by the second heater 22 may not directly saturate the air in some cases, and may also cause the water vapor in the air to exceed the required range. At this time, the evaporator 23 can be used to condense part of the water vapor, thereby accurately adjusting the humidity of the air to ensure that the dew point temperature of the air reaches the target value. That is, in this embodiment, the second heater 22 cooperates with the evaporator 23 to saturate the air so that the air in the constant temperature chamber reaches the target dew point temperature.

[0076] Furthermore, in this embodiment, the saturation component also includes an automatic water replenishment component 60 , and the automatic water replenishment component 60 is connected to the bottom of the water basin 21 for continuously replenishing water to the water basin 21 .

[0077] The water in the water basin 21 evaporates continuously due to heating, causing the water level to drop. If the water level drops too much, it will affect the normal operation of the system. The automatic water replenishment component 60 can continuously replenish the evaporated water, maintain the stability of the water level in the water basin 21, and ensure that the second heater 22 is always in an effective water position, avoiding the second heater 22 from burning empty or failing to work normally due to insufficient water level. Continuous water replenishment ensures that there is always enough water in the water basin 21 for evaporation, thereby ensuring the continuation of the air saturation process.

[0078] Moreover, the automatic water replenishment component 60 enables the system to maintain a normal water level without manual intervention, which not only improves the automation level of the system, but also ensures the continuity and stability of the operation process, especially in the case of long-term operation. This design allows the equipment to operate continuously and stably in an unattended state, reducing the complexity of manual operation and the possible risk of misoperation.

[0079] In this embodiment, the automatic water replenishment component 60 can continuously and uninterruptedly replenish water to the water basin 21. Continuous and uninterrupted water replenishment can also avoid excessive water replenishment at a single time, which may cause the water temperature in the water basin 21 to fluctuate violently, resulting in unstable humidification, thereby avoiding unstable humidity in the constant temperature box 10.

[0080] Specifically, the automatic water replenishment component 60 can limit the amount of water added by a slow flow switch. Specifically, the slow flow switch can be a needle valve, a throttle valve, or the like. Taking the needle valve as an example, the needle valve has a slender needle-shaped valve core, which is inserted into the valve seat to form a narrow flow channel, and the position of the valve core can be adjusted by rotating the hand wheel. By rotating the hand wheel, the depth of the needle-shaped valve core inserted into the valve seat is adjusted to change the cross-sectional area of ​​the flow channel, thereby controlling the flow rate in the slow flow switch.

[0081] It should be noted that, by adopting the water replenishment method in the embodiment of the present application, the humidity fluctuation in the humidity constant temperature box 10 can be within + / -0.1% RH (Relative Humidity), which greatly reduces the humidity fluctuation in the constant temperature box 10.

[0082] In an optional embodiment, the humidity generating device further comprises a temperature control component, and the temperature control component comprises a temperature controller 51 and a dew point temperature sensor 52. The temperature controller 51 is electrically connected to the second heater 22 and the evaporator 23.

[0083] The dew point temperature sensor 52 is located between the evaporator 23 and the first heater 30 and is electrically connected to the temperature controller 51. The dew point temperature sensor 52 is used to send the current dew point temperature of the air in the constant temperature chamber to the temperature controller 51.

[0084] The temperature controller 51 controls the opening and closing of the second heater 22 and the evaporator 23 according to the current dew point temperature and the target dew point temperature.

[0085] In this embodiment, the temperature main controller 51 serves as a core control unit, which is responsible for adjusting the temperature and humidity in the system in real time through electrical connection with the second heater 22 and the evaporator 23. Specifically, according to the current dew point temperature transmitted by the dew point temperature sensor 52 and the preset target dew point temperature, the second heater 22 and the evaporator 23 are controlled to be turned on and off respectively, thereby adjusting the water vapor content and temperature in the air.

[0086] For example, when the current dew point temperature of the air is higher than the preset target dew point temperature, that is, the water vapor content in the air exceeds the required range, the second heater 22 can be turned off and only the evaporator 23 can be turned on, thereby reducing the water vapor content in the air and causing the current dew point temperature to gradually decrease and approach the target dew point temperature. Conversely, when the current dew point temperature of the air is lower than the preset target dew point temperature, that is, the water vapor content in the air does not reach the required range, the evaporator 23 can be turned off and only the second heater 22 can be turned on, so that the water basin 21 continues to generate water vapor, increasing the water vapor content in the air, and causing the current dew point temperature to gradually increase and approach the target dew point temperature.

[0087] Furthermore, the temperature control component also includes an air temperature sensor 53 , which is located at the air outlet of the circulation fan 40 and is used to send the current temperature of the air passing through the circulation fan 40 to the temperature controller 51 .

[0088] The temperature controller 51 controls the on / off of the first heater 30 according to the current temperature and the target temperature.

[0089] The air temperature sensor 53 is located at the air outlet of the circulating fan 40, and can monitor the current temperature of the air after passing through the circulating fan 40 in real time. After sending the current temperature to the temperature controller 51, the temperature controller 51 will compare the current temperature provided by the air temperature sensor 53 with the preset target temperature. If the current temperature is lower than the target temperature, the temperature controller 51 will start the first heater 30 to heat the air; if the current temperature is higher than the target temperature, the temperature controller 51 will turn off the first heater 30 and stop heating.

[0090] Through the feedback information provided by the air temperature sensor 53 , the temperature controller 51 can dynamically adjust the working state of the first heater 30 to ensure that the air temperature is within the target range, so as to accurately control the air temperature in the thermostat 10 .

[0091] In an optional embodiment, the humidity generating device further includes a calibration component, which is connected to the constant temperature chamber and is used to receive the air in the constant temperature chamber, and the calibration component is used to calibrate a dew point detector (an instrument for detecting dew point temperature).

[0092] By way of example, a predetermined air output index can be set first, and the temperature setting of the thermostat 10 can be adjusted according to the index to ensure that the set temperature can produce an accurate dew point temperature. The actual air index output by the humidity generating device is then detected by a calibrated dew point meter. The air index output by the humidity generating device is then detected by an uncalibrated dew point meter. The uncalibrated dew point meter is calibrated based on the deviation between the actual air index output by the humidity generating device detected by the calibrated dew point meter and the air index output by the humidity generating device detected by the uncalibrated dew point meter.

[0093] Furthermore, the calibration component includes a sampling tube 71 and a return air tube 72 .

[0094] One end of the sampling tube 71 is connected to the constant temperature chamber, and the other end is used to communicate with the air inlet end of the uncalibrated dew point detector.

[0095] One end of the return air pipe 72 is connected to the constant temperature chamber, and the other end is connected to the air outlet of the uncalibrated dew point detector, so as to transport the air passing through the uncalibrated dew point detector back to the constant temperature chamber.

[0096] Wherein, the uncalibrated dew point detector is calibrated by the dew point temperature detected by the uncalibrated dew point detector and the actual dew point temperature.

[0097] The air in the constant temperature chamber can be guided to the uncalibrated dew point detector through the sampling tube 71. After measurement, the air returns to the constant temperature chamber through the return air pipe 72. The loop of sampling tube 71-dew point detector-return air pipe 72 ensures the continuous circulation of air in the constant temperature chamber, so that the air in the constant temperature box 10 will not be reduced, and there is no need for a compressor to replenish the constant temperature box 10.

[0098] By way of example, a calibrated dew point detector can be first connected to the sampling tube 71, and the actual dew point temperature detected by the calibrated dew point detector can be recorded. Then, the calibrated dew point detector can be removed, and an uncalibrated dew point detector can be connected to the sampling tube 71. The actual dew point temperature of the air can then be detected by the uncalibrated dew point detector. The uncalibrated dew point detector can be calibrated by taking the difference between the data detected by the calibrated dew point detector and the data detected by the uncalibrated dew point detector.

[0099] Furthermore, in this embodiment, a gas pump (not shown) is provided in the sampling tube 71, and the gas pump is used to continuously output the air in the constant temperature chamber to the uncalibrated dew point detector.

[0100] The gas pump can extract the air in the thermostat 10 and maintain a stable airflow output, and guide the air through the dew point detector. The gas flow rate can be controlled by controlling the pump speed, thereby ensuring that the air flows stably through the dew point detector, improving the stability and accuracy of the measurement, and avoiding measurement errors caused by airflow fluctuations. The gas pump can be turned off when the dew point detector is not connected, thereby avoiding air leakage in the thermostat 10.

[0101] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The orientation words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0102] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this application refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0103] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0104] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A humidity generating device, characterized in that: include: A thermostatic box having a closed constant temperature chamber; A saturation component, located at the bottom of the constant temperature chamber of the constant temperature box, used for saturating the air; a first heater, located in the constant temperature chamber and above the saturation component, for heating air; A circulation fan is located in the constant temperature chamber and above the first heater. The circulation fan is used to guide the air passing through the first heater to circulate in the constant temperature box.

2. The humidity generating device according to claim 1, characterized in that: The distance between the first heater and the circulation fan is smaller than the distance between the first heater and the saturation component.

3. The humidity generating device according to claim 1, characterized in that: The constant temperature box is a rectangular box body, and the box body includes a first side wall, a second side wall, a top wall and a bottom wall opposite to each other; A baffle is connected between the first side wall and the second side wall, the baffle is spaced apart from the top wall and the bottom wall, and the baffle and the first side wall are surrounded to form an adjustment channel; Wherein, the first heater is accommodated in the regulating channel.

4. The humidity generating device according to claim 1, characterized in that: The saturation components include: a basin containing water; a second heater, immersed in the water basin, for heating the water in the water basin; an evaporator, located between the first heater and the second heater, for condensing water in the air passing through the evaporator; The second heater cooperates with the evaporator to saturate the air so that the air in the constant temperature chamber reaches a target dew point temperature.

5. The humidity generating device according to claim 4, characterized in that: The saturation component also includes an automatic water replenishment component, which is connected to the bottom of the water basin and is used to continuously replenish water to the water basin.

6. The humidity generating device according to claim 4, characterized in that: The humidity generating device further comprises a temperature control component, wherein the temperature control component comprises: A temperature controller electrically connected to the second heater and the evaporator; a dew point temperature sensor, located between the evaporator and the first heater and electrically connected to the temperature controller, the dew point temperature sensor being used to send the current dew point temperature of the air in the constant temperature chamber to the temperature controller; The temperature controller controls the opening and closing of the second heater and the evaporator respectively according to the current dew point temperature and the target dew point temperature.

7. The humidity generating device according to claim 6, characterized in that: The temperature control component further comprises an air temperature sensor, which is located at the air outlet of the circulation fan and is used to send the current temperature of the air passing through the circulation fan to the temperature main controller; The temperature controller controls the on and off of the first heater according to the current temperature and the target temperature.

8. The humidity generating device according to claim 1, characterized in that: The humidity generating device further comprises a calibration component, which is communicated with the constant temperature chamber and is used to receive the air in the constant temperature chamber, and the calibration component is used to calibrate a dew point detector.

9. The humidity generating device according to claim 8, characterized in that: The calibration assembly comprises: A sampling tube, one end of which is connected to the constant temperature chamber, and the other end of which is used to be connected to the air inlet end of the uncalibrated dew point detector; An air return pipe, one end of which is connected to the constant temperature chamber, and the other end of which is connected to the air outlet of the uncalibrated dew point detector, and is used to transport the air passing through the uncalibrated dew point detector back to the constant temperature chamber; Wherein, the uncalibrated dew point detector is calibrated by the dew point temperature detected by the uncalibrated dew point detector and the actual dew point temperature.

10. The humidity generating device according to claim 9, characterized in that: A gas pump is arranged in the sampling tube, and the gas pump is used to continuously output the air in the constant temperature chamber to the uncalibrated dew point detector.

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