Double-temperature mixing type humidity generator

Abstract

The utility model relates to the field of humidity generators, in particular to a double-temperature mixing type humidity generator. Comprising a gas source, a wet gas branch, a dry gas branch, a first-stage saturation chamber, a second-stage saturation chamber, a mixing chamber and a thermostatic bath, one end of the wet gas branch is connected with the gas source, the other end of the wet gas branch is connected with a gas inlet of the first-stage saturation chamber, and a gas outlet of the first-stage saturation chamber is connected with a gas inlet of the second-stage saturation chamber; a gas outlet of the secondary saturation chamber is connected with one gas inlet of the mixing chamber, and the other gas inlet of the mixing chamber is connected with a dry gas branch; the second-stage saturation chamber and the mixing chamber are both located in the thermostatic bath, the first-stage saturation chamber and the thermostatic bath are respectively connected to mutually independent temperature control devices, and the temperature in the first-stage saturation chamber is higher than that in the thermostatic bath. According to the utility model, the problems of poor water vapor saturation capacity, low humidity control precision and limited adjusting range in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of humidity generation, in particular to a dual-temperature mixed temperature generator. Background Art

[0002] In the prior art, humidity generators mostly use a single method (such as dual-temperature method, dual-flow method, etc.) to control humidity, which has problems such as low precision, limited adjustment range, and slow response speed. Traditional methods are difficult to meet high-precision requirements. In addition, no matter what method is used, the difficulty of the humidity generating device is to generate saturated water vapor of 100%RH. In the humidity generating device, the saturator is a device that generates saturated water vapor. The performance of various constant humidity gas generators based on the generation of saturated moisture is closely related to the efficiency of the saturator. In order to ensure the generation of sufficiently saturated water vapor, the flow length of the gas in the water is generally increased, but it is limited to actual use. It is impossible to infinitely lengthen the flow path of the gas in the water. Therefore, the existing humidity generating device has poor water vapor saturation capacity, resulting in low humidity control accuracy. Based on this, it is necessary to develop a new type of humidity generating device to overcome the shortcomings of the prior art. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a dual-temperature mixed humidity generating device to solve the problems of low humidity control precision and limited adjustment range in the prior art.

[0004] In order to solve the technical problem, the technical solution adopted by the utility model is: a dual-temperature mixed humidity generator, including an air source, a wet gas branch, a dry gas branch, a primary saturation chamber, a secondary saturation chamber, a mixing chamber and a constant temperature tank, one end of the wet gas branch is connected to the air source, the other end of the wet gas branch is connected to the air inlet of the primary saturation chamber, the air outlet of the primary saturation chamber is connected to the air inlet of the secondary saturation chamber, the air outlet of the secondary saturation chamber is connected to one air inlet of the mixing chamber, and the other air inlet of the mixing chamber is connected to the dry gas branch; the secondary saturation chamber and the mixing chamber are both located in the constant temperature tank, the primary saturation chamber and the constant temperature tank are respectively connected to independent temperature control devices, and the temperature in the primary saturation chamber is greater than the temperature in the constant temperature tank.

[0005] Furthermore, flow controllers are provided on both the wet gas branch and the dry gas branch.

[0006] Furthermore, the temperature control device connected to the primary saturation chamber includes a temperature control tube, a controller I, a temperature sensor I, a water tank I and a water pump I. The temperature control tube and the temperature sensor I are located in the primary saturation chamber, and the water outlet of the water tank I, the temperature control tube, the water pump I and the water return port of the water tank I are connected in sequence to form a primary circulating water loop. The controller I is electrically connected to the heating element of the water tank I and the temperature sensor I.

[0007] Furthermore, the temperature control device connected to the thermostatic bath includes a controller II, a temperature sensor II, a water tank II and a water pump II. The water outlet of the water tank II, the water pump II, the thermostatic bath and the water return port of the water tank II are connected in sequence to form a secondary circulating water loop. The temperature sensor II is located in the thermostatic bath. The controller II is electrically connected to the heating element of the water tank II and the temperature sensor II.

[0008] Furthermore, the primary saturation chamber is of bubbling type, and a bubbler is arranged in the primary saturation chamber.

[0009] Furthermore, the temperature control tube spirally rises along the axial direction of the primary saturation chamber, and the bubbler faces the center of the temperature control tube.

[0010] Furthermore, it also includes a temperature equalizing device, which is a water-cooled radiator or a semiconductor temperature control mechanism with a cooling fan. When the temperature equalizing device adopts a water-cooled radiator, it is connected in series to the secondary circulating water loop. When a semiconductor temperature control mechanism is adopted, it can be set separately. The temperature equalizing device equalizes the temperature of the rear end pipeline of the mixing chamber to ensure that the temperature of the rear end pipeline of the mixing chamber is consistent with the temperature of the mixing chamber.

[0011] Furthermore, a temperature sensor and a humidity sensor are provided in the mixing chamber.

[0012] Beneficial effects of the utility model: The utility model combines the principles of the dual-temperature method and the dual-flow method to achieve precise control of humidity and meet the needs of humidity regulation. A two-stage saturation chamber is provided, and a saturation chamber adopts a bubbling type, and a bubbler is arranged in the saturation chamber to disperse the gas. A separate temperature control device is arranged in the first-stage saturation chamber, which can maintain the first-stage saturation chamber at a higher temperature, so that the gas passing through the first-stage saturation chamber becomes a high-temperature and high-humidity gas and enters the second-stage saturation chamber. The second-stage saturation chamber provides a cooling and condensing effect for the high-temperature saturated water vapor, because the second-stage saturation chamber is arranged in a constant temperature bath, and the temperature is consistent with the actual required water vapor temperature, so that the high-temperature and high-humidity gas passing through the first-stage saturation chamber will be cooled and condensed in the second-stage saturation chamber, thereby obtaining supersaturated water vapor at a low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model;

[0014] In the figure: 1. pressure regulating valve, 2. wet gas flow controller, 3. bubbler, 4. temperature control tube, 5. primary saturation chamber, 6. water pump I, 7. controller I, 8. water tank I, 9. constant temperature bath, 10. mixing chamber, 11. secondary saturation chamber, 12. heat-averaging fan, 13. water pump II, 14. controller II, 15. water tank II, 16. humidity sensor, 17. drain port of secondary saturation chamber, 18. dry gas flow controller, 19. gas drying device, 20. rear end pipeline of mixing chamber. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific implementations.

[0016] Example 1

[0017] This embodiment discloses a dual-temperature hybrid humidity generating device, such as Figure 1 As shown, it includes a gas source (not shown in the figure), the gas source is connected to a wet gas branch and a dry gas branch through a pressure regulating valve 1, a wet gas flow controller 2 is provided on the wet gas branch and is connected to the air inlet of the primary saturation chamber 5, and a bubbler 3 is provided at the air inlet of the primary saturation chamber. The gas of the gas source enters the primary saturation chamber 5 through the wet gas branch and the bubbler. The air outlet of the primary saturation chamber 5 is connected to the air inlet of the secondary saturation chamber 11 through a pipeline. The secondary saturation chamber 11 and the mixing chamber 10 are both located in the temperature equalizing tank 9. The temperature equalizing tank 9 is a water tank, and the environment in the temperature equalizing tank 9 is stabilized by circulating medium. The air outlet of the secondary saturation chamber 11 is connected to an air inlet of the mixing chamber 10, and the other air inlet of the mixing chamber 10 is connected to the dry gas branch. The dry gas branch is provided with a dry gas flow controller 18 and a gas drying device 19 for gas drying and dry gas flow control. The wet gas and dry gas after the secondary saturation are mixed in the mixing chamber 10 to form air with the required humidity. The air outlet of the mixing chamber 10 is connected to a mixing chamber rear end pipeline 20 for discharging the generated air with the required humidity. A temperature sensor and a humidity sensor are arranged in the mixing chamber 10 to monitor the test data in real time.

[0018] In this embodiment, the primary saturation chamber 5 and the thermostatic bath 9 are respectively connected to independent temperature control devices, and the temperature in the primary saturation chamber 5 is greater than the temperature in the thermostatic bath. Specifically, the temperature control device connected to the primary saturation chamber 5 includes a temperature control tube 4, a controller 17, a temperature sensor 1, a water tank 18 and a water pump 16. The temperature control tube 4 and the temperature sensor 1 are located in the primary saturation chamber 5, and the water outlet of the water tank 1, the temperature control tube 4, the water pump 16 and the water return port of the water tank 1 are sequentially connected to form a primary circulating water loop. The controller 17 is electrically connected to the temperature control element of the water tank 18 and the temperature sensor 1 to achieve temperature control in the primary saturation chamber 5.

[0019] The temperature control device connected to the thermostatic bath 9 includes a controller II14, a temperature sensor II, a water tank II15 and a water pump II13. The water outlet of the water tank II15, the water pump II13, the thermostatic bath 9 and the water return port of the water tank II15 are connected in sequence to form a secondary circulating water loop. The temperature sensor II is located in the thermostatic bath 9. The controller II14 is electrically connected to the temperature control element of the water tank II15 and the temperature sensor II to achieve temperature control in the thermostatic bath 9.

[0020] In this embodiment, the temperature control tube 4 spirally rises along the axial direction of the primary saturation chamber 5, and the bubbler 3 is directly opposite to the center of the temperature control tube 4. The air dispersed and flowing out by the bubbler 3 rises along the primary saturation chamber 5, the temperature control tube 4 heats the water inside the primary saturation chamber 5, and the air dispersed by the bubbler flows through the heated water to form high-temperature and high-humidity air.

[0021] In this embodiment, the thermostatic bath 9 and the mixing chamber rear end pipeline 20 are placed in the same space, and a temperature equalization device is also provided for equalizing the temperature of the space. The temperature equalization device is a water-cooled radiator or a semiconductor temperature control mechanism with a stirring fan 12. When the temperature equalization device adopts a water-cooled radiator, it is connected in series to the secondary circulating water loop. When a semiconductor temperature control mechanism is adopted, it can be set separately. The temperature equalization device equalizes the temperature of the mixing chamber rear end pipeline 20 to ensure that the temperature of the mixing chamber rear end pipeline 20 is consistent with the mixing chamber temperature.

[0022] The working principle of the humidity generator described in this embodiment is as follows: a two-stage saturation chamber is provided, a temperature control device is built into the first-stage saturation chamber 5, and the temperature of the water in the first-stage saturation chamber 5 is controlled to ensure the generation of saturated water vapor of the required temperature, and the second-stage saturation chamber 11 and the mixing chamber 10 are placed in the same thermostatic bath 9, and the first-stage saturation chamber 5 and the second-stage saturation chamber 11 are set to different temperatures, and the temperature is maintained constant by the temperature control device. In general, the temperature in the thermostatic bath 9 is the temperature required by the target humidity, so as to ensure that the temperature of the second-stage saturation chamber 11 and the mixing chamber 10 is consistent with the required water vapor temperature, and the temperature difference will not cause condensation or humidity change when the water vapor of a certain humidity flows out of the mixing chamber 10 after mixing. The thermostatic bath 9 and the rear end pipeline 20 of the mixing chamber are placed in the same space, and a temperature equalization device is provided in the space, and the air in the space is stirred by the stirring fan 12, so as to ensure that the temperature of the rear end pipeline 20 of the mixing chamber is consistent with the temperature of the mixing chamber 10, and prevent the water vapor in the rear end pipeline 20 of the mixing chamber from condensation or humidity change.

[0023] In this embodiment, the primary saturation chamber 5 adopts a bubbling type, and a bubbler 3 is arranged in the primary saturation chamber 5 to disperse the gas. A separate temperature control device is arranged in the primary saturation chamber 5, which can keep the primary saturation chamber 5 at a higher temperature (greater than the temperature in the thermostatic bath 9), so that the gas passing through the primary saturation chamber 5 becomes high-temperature and high-humidity gas and enters the secondary saturation chamber 11, which provides cooling and condensation for the high-temperature saturated water vapor. Because the secondary saturation chamber 11 is arranged in the thermostatic bath 9, and the temperature is consistent with the actual required water vapor temperature, the high-temperature and high-humidity gas passing through the primary saturation chamber 5 will be cooled and condensed in the secondary saturation chamber 11, thereby obtaining supersaturated water vapor at a low temperature.

[0024] Saturated wet gas and dry gas are mixed in a certain proportion in the dual-flow mixing chamber 10 to form air with the required humidity. The mixing ratio is accurately adjusted by a flow controller, and the mixed wet gas is supplied through the rear end pipeline 20 of the mixing chamber. At the same time, a humidity sensor is set in the mixing chamber 10 to monitor the test data in real time.

[0025] In this embodiment, electromagnetic valves are provided on the wet gas branch, the dry gas branch, the rear end pipeline of the mixing chamber, and the pipeline between the primary saturation chamber and the secondary saturation chamber. The electromagnetic valve is a conventional technical means in this field and will not be described in detail in this embodiment. Since the temperature of the primary saturation chamber 5 is greater than the temperature of the secondary saturation chamber 11, the gas passing through the primary saturation chamber 5 will cool down and condense in the secondary saturation chamber to form condensed water. Therefore, the secondary saturation chamber 11 is provided with a secondary saturation chamber drain port 17. When there is more condensed water in the secondary saturation chamber, it can be discharged from the drain port 17.

[0026] The above description is only the basic principle and preferred embodiments of the present invention. Improvements and substitutions made by those skilled in the art based on the present invention belong to the protection scope of the present invention.

Claims

1. A dual-temperature hybrid humidity generator, characterized in that: It includes an air source, a wet gas branch, a dry gas branch, a primary saturation chamber, a secondary saturation chamber, a mixing chamber and a constant temperature bath, wherein one end of the wet gas branch is connected to the air source, the other end of the wet gas branch is connected to the air inlet of the primary saturation chamber, the air outlet of the primary saturation chamber is connected to the air inlet of the secondary saturation chamber, the air outlet of the secondary saturation chamber is connected to one air inlet of the mixing chamber, and the other air inlet of the mixing chamber is connected to the dry gas branch; the secondary saturation chamber and the mixing chamber are both located in the constant temperature bath, the primary saturation chamber and the constant temperature bath are respectively connected to independent temperature control devices, and the temperature in the primary saturation chamber is greater than the temperature in the constant temperature bath.

2. The dual-temperature hybrid humidity generator according to claim 1 is characterized in that: Flow controllers are installed on both the wet gas branch and the dry gas branch.

3. The dual-temperature hybrid humidity generator according to claim 1 is characterized in that: The temperature control device connected to the primary saturation chamber includes a temperature control tube, a controller I, a temperature sensor I, a water tank I and a water pump I. The temperature control tube and the temperature sensor I are located in the primary saturation chamber, and the water outlet of the water tank I, the temperature control tube, the water pump I and the water return port of the water tank I are connected in sequence to form a primary circulating water loop. The controller I is electrically connected to the temperature control element of the water tank I and the temperature sensor I.

4. The dual-temperature hybrid humidity generator according to claim 1, characterized in that: The temperature control device connected to the thermostatic bath includes a controller II, a temperature sensor II, a water tank II and a water pump II. The water outlet of the water tank II, the water pump II, the thermostatic bath and the water return port of the water tank II are connected in sequence to form a secondary circulating water loop. The temperature sensor II is located in the thermostatic bath. The controller II is electrically connected to the temperature control element of the water tank II and the temperature sensor II.

5. The dual-temperature hybrid humidity generator according to claim 1, characterized in that: The primary saturation chamber is of bubbling type and is provided with a bubbler.

6. The dual-temperature hybrid humidity generator according to claim 5, characterized in that: The temperature control tube spirally rises along the axial direction of the primary saturation chamber, and the bubbler is directly opposite to the center of the temperature control tube.

7. The dual-temperature hybrid humidity generator according to claim 4, characterized in that: It also includes a temperature equalizing device, which is a water-cooled radiator or a semiconductor temperature control mechanism with a cooling fan.

8. The dual-temperature hybrid humidity generator according to claim 1, characterized in that: A temperature sensor and a humidity sensor are provided in the mixing chamber.

Images