A fast response sampling air humidity control device

Abstract

The application discloses a kind of fast response sampling air humidity control device, including power supply unit, temperature control unit, humidification unit, water replenishment unit, heat dissipation unit, sensor unit, data acquisition unit and control module.Power supply unit is used to power supply requirement and control circuit on-off;Temperature control unit is used to regulate the temperature of water in itself waterway;Humidification unit is used to humidify dry gas to the preset relative humidity;Water replenishment unit is used to supplement the water volume of temperature control unit pipeline and balance pressure;Heat dissipation unit is used to take away the heat generated by semiconductor refrigerating sheet in work;Sensor unit and data acquisition unit are used to monitor the running state of device in real time;Control module is used to control the operation of the whole device.The device has low power consumption, can control water temperature in real time, actively and accurately, realizes the purpose of rapidly adjusting the relative humidity of sampling air, and is applied in many air humidity control and instrument temperature control application scenarios such as atmospheric physics and atmospheric environment.

Description

Technical Field

[0001] The invention relates to the technical field of pre-processing of gas detection, and in particular to a fast-response sampling air humidity control device. Background Art

[0002] Air humidification is widely used in many industries, for example, in atmospheric physics to study the hygroscopic growth behavior of aerosols. Currently, humidity control devices for high-volume air sampling use a combination of humidification tubes and commercial water baths. These baths contain over 5L of water, but actual requirements may be less than 1L. This results in high power consumption and a response speed measured in minutes, which falls short of the second-level response required for applications like aircraft observation. Humidity control for low-volume air sampling primarily uses humidified air combined with humidification tubes, a method characterized by its slow response speed.

[0003] In the fields of atmospheric physics and atmospheric environment, as well as other air humidity control application scenarios, existing humidity control devices cannot meet the requirements of low power consumption and rapid humidity control. Therefore, a fast-response temperature control device is urgently needed. Summary of the Invention

[0004] To this end, the present invention provides a fast-response sampling air humidity control device to solve one or more of the above-mentioned problems.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A fast-response sampling air humidity control device comprising:

[0007] Box;

[0008] a temperature control unit provided in the box, wherein the total amount of circulating water is not higher than 0.3 L, the temperature control unit comprising a semiconductor refrigeration sheet, a second water-cooling head, a heating rod, a diaphragm water pump, and a water mixing cylinder; the semiconductor refrigeration sheet is fitted on both sides of the second water-cooling head, the heating rod is provided in the water mixing cylinder, the water outlet of the second water-cooling head is connected to the water inlet pipeline of the diaphragm water pump, the water outlet of the diaphragm water pump is connected to the water inlet pipeline of the water mixing cylinder, and the water outlet of the water mixing cylinder is connected to the water inlet pipeline of the second water-cooling head;

[0009] A humidifying unit, comprising a humidifying pipe, wherein the water inlet of the humidifying pipe is connected to the water outlet pipeline of the water mixing cylinder, and the water outlet of the humidifying pipe is connected to the water inlet pipeline of the second water cooling head;

[0010] a sensor unit, comprising a flow meter, a first water temperature sensor, and a temperature and humidity sensor, wherein the flow meter and the first water temperature sensor are both arranged on the pipeline behind the water outlet of the second water-cooling head, and the temperature and humidity sensor is arranged on the pipeline behind the air outlet of the humidifying tube;

[0011] a data acquisition unit, comprising a temperature and humidity data acquisition module and a water temperature data acquisition module, wherein the temperature and humidity data acquisition module is electrically connected to the temperature and humidity sensor, and the water temperature data acquisition module is electrically connected to the first water temperature sensor;

[0012] The control module is electrically connected to the flow meter, the temperature and humidity data acquisition module, and the water temperature data acquisition module to receive data, forms corresponding control instructions based on the set target temperature, target humidity, and the received data, and is electrically connected to the semiconductor refrigeration plate, the heating rod, and the diaphragm water pump to control the working status of each part so that the actual temperature approaches the target temperature and the relative humidity approaches the target humidity under the action of the humidification tube.

[0013] Furthermore, the temperature control unit also includes a voltage regulating module, and the voltage regulating module is electrically connected to the heating rod and the control module respectively.

[0014] Furthermore, the humidification unit also includes an external air pump, which is separately arranged from the box body, the air inlet of the external air pump is connected to the air outlet pipeline of the humidification tube, the temperature and humidity sensor is arranged on the pipeline between the external air pump and the humidification tube, and the external air pump is electrically connected to the control module.

[0015] Furthermore, the sampling air humidity control device also includes a water replenishment unit with a water replenishment volume of 0.2L, and the water replenishment unit includes a water replenishment tank and a normally closed ventilation solenoid valve. The water replenishment tank is arranged on the outside of the box body and is higher than the mixing water cylinder. The normally closed ventilation solenoid valve is arranged in the box body and is electrically connected to the control module. The bottom water outlet of the water replenishment tank is connected to the top water inlet pipeline of the mixing water cylinder, and the air inlet of the normally closed ventilation solenoid valve is connected to the exhaust pipeline of the water replenishment tank.

[0016] Furthermore, the sampling air humidity control device also includes a heat dissipation unit arranged in the box body, and the heat dissipation unit includes a first water-cooling head, a third water-cooling head, an integrated water tank water pump, a heat dissipation water drain, a first circulation fan and a second circulation fan. The water outlet of the first water-cooling head is connected to the water inlet pipeline of the third water-cooling head, and the first water-cooling head and the third water-cooling head are respectively arranged in contact with the semiconductor refrigeration plates located on both sides of the second water-cooling head. The water outlet of the third water-cooling head is connected to the water inlet pipeline of the integrated water tank water pump, and the water outlet of the integrated water tank water pump is connected to the water inlet pipeline of the heat dissipation water drain, and the water outlet of the heat dissipation water drain is connected to the water inlet pipeline of the first water-cooling head. The first circulation fan and the second circulation fan are arranged on both sides of the heat dissipation water drain, and the integrated water tank water pump, the first circulation fan and the second circulation fan are all electrically connected to the control module.

[0017] Furthermore, the sensor unit further includes a second water temperature sensor, which is arranged on a pipeline between the heat dissipation water row and the first water cooling head, and the second water temperature sensor is electrically connected to the water temperature data acquisition module.

[0018] Furthermore, the sampling air humidity control device also includes a power supply unit, and the power supply unit includes a relay, and the relay is electrically connected to the control module, the semiconductor refrigeration plate, the normally closed ventilation solenoid valve, and the pressure regulating module respectively.

[0019] The present invention has the following advantages:

[0020] Through the cooperation of the semiconductor refrigeration chip and the heating rod, the water temperature of the temperature control unit is controlled, thereby achieving the purpose of humidifying the gas passing through the humidification tube to the preset relative humidity value; through the cooperation of the control module, the temperature and humidity sensor and the pressure regulating module, the water temperature of the water path of the temperature control unit is controlled in real time, actively and accurately; the water capacity of the whole device is less than 0.5L (of which 0.3L is in the circulating water path of the temperature control unit, and 0.2L is pre-stored in the water replenishment unit), so it can achieve a rapid response to heating and cooling needs, thereby also achieving rapid adjustment of temperature and humidity; real-time monitoring of the water temperature of the temperature control unit and the heat dissipation unit is achieved through the first water temperature sensor and the second water temperature sensor, ensuring the reliability of the operation of the whole system and protecting the semiconductor refrigeration chip; real-time monitoring of the normal operation of the diaphragm water pump is achieved through the flow meter, avoiding the problem of excessive heating and cooling of local water due to water pump failure and subsequent damage to components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0023] Figure 1 A schematic structural diagram of a fast-response sampling air humidity control device provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the circuit connections of a fast-response sampling air humidity control device provided by an embodiment of the present invention (black dashed lines represent component negative circuit connections, and black solid lines represent component positive circuit connections);

[0025] Figure 3 Schematic diagram of the water connection of the fast-response sampled air humidity control device provided by an embodiment of the present invention (the black solid line represents the water connection between the temperature control unit and the water replenishment unit, and the black dotted line represents the water connection of the heat dissipation unit);

[0026] Figure 4 Schematic diagram of the data line connection of the fast-response sampling air humidity control device provided by an embodiment of the present invention (the black solid line represents the data line connection between the sensor and the data acquisition unit, and the black dotted line represents the data line connection between the data acquisition unit and some components and the control module).

[0027] In the figure: 1-220V AC power supply, 2-24V DC power supply, 3-12V DC power supply, 4-first refrigeration group, 5-second refrigeration group, 6-first water cooling head, 7-second water cooling head, 8-third water cooling head, 9-diaphragm water pump, 10-first water temperature sensor, 11-flow meter, 12-second water temperature sensor, 13-first circulation fan, 14-second circulation fan, 15-cooling water row, 16-water mixing cylinder, 17-heating rod, 18-humidification pipe, 19-integrated water tank pump, 20-temperature and humidity sensor, 21-water supply tank, 22-ventilation solenoid valve, 23-pressure regulating module, 24-relay, 25-temperature and humidity data acquisition module, 26-water temperature data acquisition module, 27-control module, 28-external vacuum pump. DETAILED DESCRIPTION

[0028] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0029] The terms "upper", "lower", "left", "right", "middle", etc. used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the present invention without substantially changing the technical content.

[0030] like Figure 1-4 As shown, this embodiment provides a fast-response sampling air humidity control device, including a box, a power supply unit, a temperature control unit, a humidification unit, a water supply unit, a heat dissipation unit, a sensor unit, a data acquisition unit and a control module; wherein the power supply unit is used to meet the power requirements of the electronic components in the device and control the on-off of the circuit of the entire device, the temperature control unit is used to regulate the water temperature of its own water channel, the humidification unit is used to humidify the dry gas to a preset relative humidity, the water supply unit is used to replenish the water volume in the temperature control unit pipeline and balance the pipeline pressure of the temperature control unit, the heat dissipation unit is used to dissipate heat from the semiconductor refrigeration plate of the temperature control unit, the sensor unit is used to sense corresponding data, the data acquisition unit is used for data conversion, and the control module is used to overall control the operation of the entire device.

[0031] The box has a movable door and a three-layer interior. The sides feature holes of varying diameters, allowing for fastening components with screws, nuts, and U-shaped clips. The transparent box and movable door facilitate easy inspection of device components and observation of their operating status.

[0032] The power supply unit includes a 220V AC power supply 1, a 12V DC power supply 3, a 24V DC power supply 2, and a four-channel relay 24. The power supply port for the 220V AC power supply 1 is located on the side of the middle layer of the box and has multiple connections. The neutral and live wires of the 12V DC power supply 3 are connected to the 220V AC power supply, while the neutral and live wires of the 24V DC power supply 2 are connected to the 220V AC power supply. The four-channel relay 24 requires 24V DC power to operate, so its positive and negative terminals are connected to the output terminals of the 24V DC power supply. The 12V DC power supply 3, the 24V DC power supply 2, and the four-channel relay 24 are all fixed to the middle layer of the box. In this embodiment, the 220V AC power supply 1 is fixed to the inner wall of the box, and the 12V DC power supply 3 and the 220V AC power supply 1 are connected by wires, while the 24V DC power supply 2 and the 220V AC power supply 1 are connected by wires. The four-channel relay 24 is connected to the main electrical circuit of the device. The control module 27 controls the on and off of each channel circuit to realize the operation of each unit. When any channel parameter is monitored to be abnormal, the four channels will be automatically disconnected in turn, improving the reliability and safety of the device.

[0033] The temperature control unit and humidification unit are used together. The temperature control unit includes a semiconductor cooling chip, a second water-cooling head 7, a heating rod 17, a pressure regulating module 23, a diaphragm water pump 9, a water-cooling head fixed housing, and a water mixing drum 16. The humidification unit includes a humidification tube 18 and an external air extraction pump 28. The semiconductor cooling chip is attached to the side of the second water-cooling head 7, the heating rod 17 is fixed in the middle of the water mixing drum, the pressure regulating module 23 is installed on the second layer of the housing, the water-cooling head fixed housing, the water mixing drum, and the diaphragm water pump 9 are all installed on the third layer of the housing, the humidification tube 18 is vertically fixed to the side of the housing using a U-shaped buckle, screws, and nuts, and the external air extraction pump 28 is independent of the entire device. The semiconductor cooling chips are provided in two groups, each containing four chips. The front and back surfaces of the semiconductor cooling chips are coated with thermal grease. The front surfaces of the two groups of semiconductor cooling chips are attached to the sides of the second water-cooling head 7. The two groups of semiconductor refrigeration chips are a first cooling group 4 and a second cooling group 5. The four semiconductor refrigeration chips in one group have their negative terminals connected to the negative terminal of a 12V DC power supply 3, and their positive terminals connected to the fourth channel COM port of a four-channel relay 24. The fourth channel NO port of the four-channel relay 24 is also connected to the positive terminal of the 12V DC power supply 3. The four semiconductor refrigeration chips in the other group have their negative terminals connected to the negative terminal of a 12V DC power supply 3, and their positive terminals connected to the third channel COM port of a four-channel relay 24. The third channel NO port of the four-channel relay 24 is also connected to the positive terminal of the 12V DC power supply 3. A heating rod 17 is threadedly fixed to the center of a water mixing cylinder 16. The hot and neutral wires of the heating rod 17 are connected to the positive and negative output terminals of a voltage regulator module 23. The negative input terminal of the voltage regulator module 23 is connected to the negative terminal of a 220V AC power supply 1, and the positive terminal is connected to the second channel COM port of a four-channel relay 24. The second channel NO port of the four-channel relay 24 is also connected to the positive terminal of the 220V AC power supply 1. The diaphragm water pump 9 is directly connected to the 12V DC power supply 3. The water outlet of the second water cooling head 7 and the water inlet of the diaphragm water pump 9 are connected by a pipe. A first water temperature sensor 10 and a flow meter 11 are installed between the water outlet of the second water cooling head 7 and the water inlet of the diaphragm water pump 9. The water outlet of the diaphragm water pump 9 and the water inlet of the water mixing drum 16 are connected by a pipe. The water outlet of the water mixing drum 16 is connected by a pipe to the water inlet of the humidification tube 18. The water outlet of the humidification tube 18 and the water inlet of the second water cooling head 7 are also connected by a pipe. The air inlet of the external air pump 28 is connected to the air outlet of the humidification tube 18. A temperature and humidity sensor 20 is installed in the pipe between the air inlet of the external air pump 28 and the air outlet of the humidification tube 18. The air inlet of the humidification tube 18 is open.

[0034] In the embodiment, the first refrigeration group 4 and the second refrigeration group 5 each have four semiconductor refrigeration pieces, and the eight semiconductor refrigeration pieces are connected to the 12V DC power supply 3 (only the circuit connection mode of the first semiconductor refrigeration piece of each semiconductor refrigeration piece group is shown in the figure); the control module 27 sends a command to the third or fourth channel of the four-channel relay 24 to realize a closed circuit, and only one semiconductor refrigeration piece group is operated at a time; the control module 27 is set to switch the operation of another semiconductor refrigeration piece group after 12 hours, and the two semiconductor refrigeration piece groups are alternately operated, so as to prolong the use time of the semiconductor refrigeration piece and also to ensure that when one semiconductor refrigeration piece group is damaged, another semiconductor refrigeration piece group can compensate for the refrigeration demand in time. The front and back surfaces of the semiconductor refrigeration piece are smeared with heat-conducting silicone grease, which can promote heat conduction and also enable the semiconductor refrigeration piece to be better fixed on the side of the water cooling head; the front surfaces of the two semiconductor refrigeration piece groups are respectively attached to the side of the second water cooling head 7 for conducting cold to the second water cooling head 7; the back surfaces of the two semiconductor refrigeration piece groups are respectively attached to one side of the first water cooling head 6 and one side of the third water cooling head 8 for conducting the heat generated by the semiconductor refrigeration piece during operation to the first water cooling head 6 and the third water cooling head 8. The top end of the heating rod 17 is provided with a thread, and the position where the heating rod 17 is installed in the mixed water cylinder 16 is provided with a thread of the same size specification, and the heating rod 17 is fixed by smearing thread glue, which can also avoid water overflow. The voltage regulating module 23 connected to the heating rod 17 is connected to the control module 27, and the voltage supplied to the heating rod 17 is adjusted by the command sent by the control module 27, so as to adjust the heating power and accurately control the temperature of the water in the water circuit of the temperature control unit. The diaphragm water pump 9 is continuously operated to keep the water in the closed water circuit of the temperature control unit in a constant circulation state of not more than 0.3L (close to 0.3L or about 0.3L), so as to ensure that the water cooled in the second water cooling head 7 enters the mixed water cylinder 16 in time and is fully mixed with the water heated by the heating rod 17 in the cylinder. By this method, the heating capacity and the refrigeration capacity of the temperature control unit are dynamically balanced, the water temperature in the temperature control unit is constant, the completely closed water circuit circulation can avoid the influence of external environmental changes on the system, and the stability of the system operation is greatly improved; about 0.3L of water can realize rapid absorption and uniform mixing of refrigeration and heating under the rapid circulation of the diaphragm water pump 9, and rapid response to changes in the set temperature. The inlet and outlet of the humidification pipe 18 are connected to the temperature control unit, and the relative humidity of the gas entering the humidification pipe 18 is adjusted by controlling the temperature of the water entering the humidification pipe 18.

[0035] As a preferred embodiment, the water replenishment unit includes a replenishment tank 21, a water tank stand, and a normally closed vent solenoid valve 22. The replenishment capacity of the water replenishment unit is approximately 0.2L, with the replenishment water primarily stored in the replenishment tank 21. The replenishment tank 21 is placed on the water tank stand, which is secured to the side of the housing with screws and nuts. The water outlet at the bottom of the replenishment tank 21 is connected to the replenishment port of the mixing drum 16 via a pipe. The normally closed vent solenoid valve 22 is mounted on the third layer of the housing. Its air inlet is connected to the exhaust port of the replenishment tank 21 via a pipe, and its air inlet is open. The negative pole of the normally closed vent solenoid valve 22 is electrically connected to the negative pole of the 24V DC power supply 2, and its positive pole is electrically connected to the first channel COM port of the four-channel relay 24. The first channel NO port of the four-channel relay 24 is electrically connected to the positive pole of the 24V DC power supply 2. Since the temperature control unit is a closed water circuit in the operating state, the change in temperature in the water circuit will change the water circuit pressure; at the same time, since the humidification tube 18 continuously humidifies the gas entering the tube, the water volume in the water circuit of the temperature control unit will decrease after a period of circulation; a water replenishment unit is set and the timed on and off of the first channel of the four-channel relay 24 is controlled by the control module 27 to control the timed opening and closing of the ventilation solenoid valve 22, which can balance the pipeline pressure and realize water replenishment for the temperature control unit; when the solenoid valve is powered off, it remains in a normally closed state, and the water in the water replenishment tank 21 will not flow into the temperature control unit under the action of atmospheric pressure, ensuring that the temperature control unit is still in a closed state.

[0036] The heat dissipation unit includes a heat dissipation radiator 15, a circulation fan, a water-cooling head, and an integrated water tank pump 19. The heat dissipation radiator 15 and the circulation fan are installed on the first layer of the housing. There are two water-cooling heads, namely the first water-cooling head 6 and the third water-cooling head 8, which are placed in a water-cooling head fixing housing for installation on the first layer of the housing. The integrated water tank pump 19 is fixed to the side of the housing using U-shaped clips, screws, and nuts. There are two circulation fans, namely the first circulation fan 13 and the second circulation fan 14, which are fixed to either side of the heat dissipation radiator 15 with screws. The positive and negative poles of the two circulation fans and the integrated water tank pump 19 are connected in parallel and electrically connected to the 12V DC power supply 3. The water outlet of the first water-cooling head 6 is connected to the water inlet of the third water-cooling head 8 via a pipe. The water outlet of the third water-cooling head 8 is connected to the water inlet of the integrated water tank pump 19 via a pipe. The water outlet of the integrated water tank pump 19 is connected to the water inlet of the heat dissipation drain 15 via a pipe. The water outlet of the heat dissipation drain 15 is connected to the water inlet of the first water-cooling head 6 via a pipe. A second water temperature sensor 12 is provided between the water outlet of the heat dissipation drain 15 and the water inlet of the first water-cooling head 6. In this embodiment, the first water-cooling head 6 and the third water-cooling head 8 are connected in series via pipes to absorb heat generated by the first refrigeration group 4 and the second refrigeration group 5, respectively, attached to either side of the second water-cooling head 7 during operation. This ensures that heat generated by the semiconductor cooling element is promptly transferred during operation, preventing damage to the semiconductor cooling element. The heat dissipation drain 15 is made of copper, which improves heat dissipation efficiency. Two circulating fans are screwed to either side of the heat dissipation drain 15 to promptly remove heat dissipated by the heat dissipation drain 15, further improving the heat dissipation efficiency of the heat dissipation unit. The integrated water tank pump 19 can not only ensure the circulation of the water channel of the heat dissipation unit, but also its own water tank can absorb more heat, take away the heat generated by the semiconductor refrigeration plate in time, and further improve the heat dissipation efficiency of the heat dissipation unit.

[0037] The sensor unit and data acquisition unit are used in conjunction. The sensor unit includes a flowmeter 11, a first water temperature sensor 10, a second water temperature sensor 12, and a temperature and humidity sensor 20. The data acquisition unit includes a temperature and humidity data acquisition module 25 and a water temperature data acquisition module 26. The flowmeter 11 is connected in series in the pipe between the first water temperature sensor 10 and the water inlet of the mixing drum 16. The first water temperature sensor 10 is connected in series via a tee between the water outlet of the second water cooling head 7 and the flowmeter 11. The second water temperature sensor 12 is connected in series via a tee between the water inlet of the first water cooling head 6 and the water outlet of the heat dissipation water drain 15. The first and second water temperature sensors 10, 12 are electrically connected to the water temperature data acquisition module 26. The temperature and humidity sensor 20 is connected in series between the humidification tube 18 and the vacuum pump via a tee and is electrically connected to the temperature and humidity data acquisition module 25. The water temperature data acquisition module 26 is electrically connected to the 24V DC power supply 2, while the temperature and humidity data acquisition module 25 is electrically connected to the 12V DC power supply 3. In this embodiment, the temperature of the water circuit of the temperature control unit is monitored by the first water temperature sensor 10, and a threshold value (target temperature) of the water circuit temperature of the temperature control unit is set in the control module 27; the temperature of the water circuit of the heat dissipation unit is monitored by the second water temperature sensor 12 to ensure that the heat generated when the refrigeration plate is working can be dissipated in time, and the threshold value of the water circuit temperature of the heat dissipation unit is set in the control module 27 (the heat dissipation temperature threshold is the maximum temperature that the semiconductor refrigeration plate can withstand under normal working conditions); the flow threshold value of the water circuit of the temperature control unit is set in the control module 27, and the flow in the temperature control unit pipeline is monitored in real time by the flow meter 11. The measured flow rate is used to reflect the operation status of the diaphragm water pump 9 to ensure that the water in the temperature control unit pipeline can be timely and fully mixed after absorbing heat and cold; the temperature and humidity sensor 20 is used to measure whether the air humidified by the humidifying tube 18 accurately reaches the preset relative humidity. The control module 27 automatically adjusts the operating power of the heating element in the temperature control unit by reading the data of the temperature and humidity sensor 20 to ensure that the relative humidity of the air after humidification accurately reaches the preset value. The control module 27 ensures that the temperature control unit and the heat dissipation unit operate within the set temperature threshold and flow threshold by reading the data of the flow meter 11 and the water temperature data acquisition module 26 in real time; if the actual heat dissipation temperature exceeds the heat dissipation temperature threshold or the actual flow is lower than the flow threshold, the control module 27 will immediately send an instruction to the four-channel relay 24 to disconnect the circuits of the four channels.

[0038] The sampled air humidity control device provided in this embodiment includes two water circuits, two air circuits, and four types of circuits, as follows:

[0039] Water circuit 1: second water cooling head 7 - flow meter 11 - diaphragm water pump 9 - water mixing cylinder 16 - humidification tube 18 - second water cooling head 7. Used to continuously provide water with precise temperature control to the humidification tube 18.

[0040] Water circuit 2: first water cooling head 6 - third water cooling head 8 - integrated water tank and water pump 19 - heat dissipation water drain 15 - first water cooling head 6. It is used to promptly transfer the heat generated by the semiconductor refrigeration chip during operation.

[0041] Air circuit 1: Normally closed ventilation solenoid valve 22 - water supply tank 21. Used to regularly balance the water pressure of the temperature control unit and replenish the water volume of the temperature control unit.

[0042] Gas path 2: humidification tube 18 - temperature and humidity sensor 20 - external air pump 28. Used to humidify the dry gas entering the humidification tube 18 to the set relative humidity.

[0043] Circuit 1 is used to convert 220V AC power into 12V and 24V DC power, including: 220V AC power supply 1-12V DC power supply 3, 220V AC power supply 1-24V DC power supply 2.

[0044] Circuit 2 supplies power to 12V DC electrical appliances, including: 12V DC power supply 3—the fourth channel of relay 24—the second refrigeration group 5, 12V DC power supply 3—the third channel of relay 24—the first refrigeration group 4, 12V DC power supply 3—the circulation fan, diaphragm water pump 9 and integrated water tank pump 19, and 12V DC power supply 3—the temperature and humidity data acquisition module 25.

[0045] Circuit three supplies power to 24V DC electrical appliances, including: 24V DC power supply 2—first channel of relay 24—ventilation solenoid valve 22, 24V DC power supply 2—water temperature data acquisition module 26, and 24V DC power supply 2—four-channel relay 24.

[0046] Circuit 4 supplies power to 220V AC electrical appliances, and includes: 220V AC power supply 1 - the second channel of relay 24 - voltage regulating module 23 - heating rod 17.

[0047] In this embodiment, the first water temperature sensor 10, the second water temperature sensor 12, and the temperature and humidity sensor 20 are connected to the water temperature data acquisition module 26 and the temperature and humidity data acquisition module 25 via data lines; the water temperature data acquisition module 26 and the temperature and humidity data acquisition module 25 are connected to the control module 27 via data lines; the flow meter 11 is connected to the control module 27 via data lines; the data transmission interface of the voltage regulating module 23 is connected to the control module 27 via data lines; and the data transmission interface of the four-channel relay 24 is connected to the control module 27 via data lines. The control module 27 reads data from the temperature and humidity sensor 20 to adjust the water temperature of the temperature control unit in real time, thereby achieving accurate humidification of the gas flowing through the humidification tube 18. The control module 27 monitors the operating status of the device and the status of the electronic components by reading data from the first water temperature sensor 10, the second water temperature sensor 12, and the flow meter 11 in real time. The target humidity of the gas after humidification by the humidification tube 18 can be set, and the relative humidity of the gas in the humidification tube 18 during the operation of the device can be recorded.

[0048] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A fast-response sampling air humidity control device, characterized in that: include: Box; a temperature control unit provided in the box, wherein the total amount of circulating water is not higher than 0.3 L, the temperature control unit comprising a semiconductor refrigeration sheet, a second water-cooling head, a heating rod, a diaphragm water pump, and a water mixing cylinder; the semiconductor refrigeration sheet is fitted on both sides of the second water-cooling head, the heating rod is provided in the water mixing cylinder, the water outlet of the second water-cooling head is connected to the water inlet pipeline of the diaphragm water pump, the water outlet of the diaphragm water pump is connected to the water inlet pipeline of the water mixing cylinder, and the water outlet of the water mixing cylinder is connected to the water inlet pipeline of the second water-cooling head; A humidifying unit, comprising a humidifying pipe, wherein the water inlet of the humidifying pipe is connected to the water outlet pipeline of the water mixing cylinder, and the water outlet of the humidifying pipe is connected to the water inlet pipeline of the second water cooling head; a sensor unit, comprising a flow meter, a first water temperature sensor, and a temperature and humidity sensor, wherein the flow meter and the first water temperature sensor are both arranged on the pipeline behind the water outlet of the second water-cooling head, and the temperature and humidity sensor is arranged on the pipeline behind the air outlet of the humidifying tube; a data acquisition unit, comprising a temperature and humidity data acquisition module and a water temperature data acquisition module, wherein the temperature and humidity data acquisition module is electrically connected to the temperature and humidity sensor, and the water temperature data acquisition module is electrically connected to the first water temperature sensor; The control module is electrically connected to the flow meter, the temperature and humidity data acquisition module, and the water temperature data acquisition module to receive data, forms corresponding control instructions based on the set target temperature, target humidity, and the received data, and is electrically connected to the semiconductor refrigeration plate, the heating rod, and the diaphragm water pump to control the working status of each part so that the actual temperature approaches the target temperature and the relative humidity approaches the target humidity under the action of the humidification tube.

2. The sampling air humidity control device according to claim 1, characterized in that: The temperature control unit further includes a voltage regulating module, which is electrically connected to the heating rod and the control module respectively.

3. The sampling air humidity control device according to claim 1, characterized in that: The humidification unit also includes an external air pump, which is separately arranged from the box body. The air inlet of the external air pump is connected to the air outlet pipeline of the humidification tube. The temperature and humidity sensor is arranged on the pipeline between the external air pump and the humidification tube. The external air pump is electrically connected to the control module.

4. The sampling air humidity control device according to claim 1, characterized in that: It also includes a water replenishment unit with a water replenishment volume of 0.2L, and the water replenishment unit includes a water replenishment tank and a normally closed ventilation solenoid valve. The water replenishment tank is arranged on the outside of the box body and is higher than the mixing water cylinder. The normally closed ventilation solenoid valve is arranged in the box body and is electrically connected to the control module. The bottom water outlet of the water replenishment tank is connected to the top water inlet pipeline of the mixing water cylinder, and the air inlet of the normally closed ventilation solenoid valve is connected to the exhaust pipeline of the water replenishment tank.

5. The sampling air humidity control device according to claim 1, characterized in that: It also includes a heat dissipation unit arranged in the box body, and the heat dissipation unit includes a first water-cooling head, a third water-cooling head, an integrated water tank water pump, a heat dissipation water drain, a first circulation fan and a second circulation fan. The water outlet of the first water-cooling head is connected to the water inlet pipeline of the third water-cooling head, and the first water-cooling head and the third water-cooling head are respectively arranged in contact with the semiconductor refrigeration plates located on both sides of the second water-cooling head. The water outlet of the third water-cooling head is connected to the water inlet pipeline of the integrated water tank water pump, and the water outlet of the integrated water tank water pump is connected to the water inlet pipeline of the heat dissipation water drain, and the water outlet of the heat dissipation water drain is connected to the water inlet pipeline of the first water-cooling head. The first circulation fan and the second circulation fan are arranged on both sides of the heat dissipation water drain, and the integrated water tank water pump, the first circulation fan and the second circulation fan are all electrically connected to the control module.

6. The sampling air humidity control device according to claim 5, characterized in that: The sensor unit further includes a second water temperature sensor, which is disposed on a pipeline between the heat dissipation water row and the first water cooling head, and is electrically connected to the water temperature data acquisition module.

7. The sampling air humidity control device according to claim 1, characterized in that: It also includes a power supply unit, which includes a relay. The relay is electrically connected to the control module, the semiconductor refrigeration plate, the normally closed ventilation solenoid valve, and the pressure regulating module respectively.

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