Humidity generating device

Abstract

The utility model discloses a humidity generating device which comprises a liquid storage tank, a constant flow pump, a gas generator and a temperature and humidity sensor, the constant flow pump is connected with the liquid storage tank through a pipeline, the gas generator is connected with the constant flow pump through a pipeline, and the temperature and humidity sensor is connected with the gas generator through a pipeline. According to the humidity generating device provided by the utility model, water vapor and dry carrier gas are mixed to form gas with constant humidity, the constant flow pump accurately controls the flow of water entering the evaporator so as to control the amount of the steam, and the flow of the carrier gas is accurately controlled through the rotor flow meter; the set humidity can be obtained after the steam and the carrier gas are mixed in the evaporator, the humidity generation is stable and continuous, the equipment operation is simple and safe, the humidity control range is wide, and both relative humidity and absolute humidity can be generated.

Description

Technical Field

[0001] The utility model belongs to the technical field of humidity generators, and particularly relates to a humidity generating device. Background Art

[0002] A humidity generator is a special device for precisely and quantitatively supplying moisture in a laboratory. Precise, controllable, and stable humidity is required in application environments such as steel corrosion, fuel cell testing, catalytic hydrothermal aging, flue gas analysis, and chip testing.

[0003] In related technologies, traditional humidity generators use the bubbling form to generate humidity, making it difficult to control both temperature and humidity, resulting in unstable generation and large fluctuations. This causes large experimental errors and inaccuracies. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a humidity generating device to solve the problem that temperature and humidity are not easily controlled in the prior art.

[0005] To this end, the utility model provides a humidity generating device, including: a liquid storage tank, a constant flow pump, a gas generator, and a temperature and humidity sensor. The constant flow pump is connected to the liquid storage tank through a pipeline, the gas generator is connected to the constant flow pump through a pipeline, and the temperature and humidity sensor is connected to the gas generator through a pipeline.

[0006] Preferably, the gas generator includes a housing, an evaporator is arranged inside the housing, the evaporator is connected to the constant flow pump through a pipeline, and the evaporator is connected to the temperature and humidity sensor through a pipeline.

[0007] Preferably, a gas inlet is arranged on the housing, and the gas inlet is connected to the evaporator through a pipeline.

[0008] Preferably, a rotameter is arranged on the housing, and the rotameter is connected to the gas inlet and the evaporator through pipelines.

[0009] Preferably, a relay is arranged on the evaporator, and the relay is electrically connected to the evaporator.

[0010] Preferably, a temperature control module is arranged on the evaporator, and the temperature control module is electrically connected to the evaporator.

[0011] Preferably, a first temperature control instrument is arranged on the housing, and the first temperature control instrument is electrically connected to the relay and the temperature control module.

[0012] Preferably, a heat tracing socket is arranged on the housing.

[0013] Preferably, a second temperature control instrument is provided on the housing, and the second temperature control instrument is electrically connected to the heat tracing cable socket.

[0014] Preferably, a thermocouple is provided on one side of the heat tracing cable socket.

[0015] Beneficial effects:

[0016] 1. The present utility model provides a humidity generating device. A gas with a constant humidity is formed by mixing water vapor with a dry carrier gas. A constant flow pump precisely controls the water flow rate entering the evaporator, thereby controlling the amount of steam. The carrier gas flow rate is precisely controlled by a rotameter. After mixing the steam and the carrier gas in the evaporator, the set humidity can be obtained. The humidity generation is stable and continuous. The equipment is simple and safe to operate, and has a wide humidity control range. It can generate both relative humidity and absolute humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 FIG. 1 is a schematic structural diagram of a humidity generating device provided by the present utility model.

[0019] Figure 2 FIG. 2 is a schematic structural diagram of a gas generator of a humidity generating device provided by the present utility model.

[0020] Figure 3 FIG. 3 is a schematic internal structural diagram of a gas generator of a humidity generating device provided by the present utility model.

[0021] In the figure, 1 - liquid storage tank, 2 - constant flow pump, 3 - gas generator, 31 - housing, 32 - evaporator, 33 - relay, 34 - temperature control module, 35 - first temperature control instrument, 36 - gas inlet, 37 - heat tracing cable socket, 38 - second temperature control instrument, 39 - thermocouple, 4 - temperature and humidity sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The content of the present utility model can be more easily understood by referring to the following detailed description of the preferred embodiments of the present utility model and the included examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. When there is a contradiction, the definition in this specification shall prevail.

[0023] Example 1:

[0024] To complete, a humidity generating device as shown in Figures 1-3 is provided, which includes: a liquid storage tank 1, a constant flow pump 2, a gas generator 3, and a temperature and humidity sensor 4. The constant flow pump 2 is connected to the liquid storage tank 1 through a pipeline. The gas generator 3 is connected to the constant flow pump 2 through a pipeline. The temperature and humidity sensor 4 is connected to the gas generator 3 through a pipeline.

[0025] The gas generator 3 includes a housing 31. An evaporator 32 is arranged inside the housing 31. The evaporator 32 is connected to the constant flow pump 2 through a pipeline, and the evaporator 32 is connected to the temperature and humidity sensor 4 through a pipeline. A relay 33 is arranged on the evaporator 32, and the relay 33 is electrically connected to the evaporator 32. A temperature control module 34 is arranged on the evaporator 32, and the temperature control module 34 is electrically connected to the evaporator 32. A first temperature control instrument 35 is arranged on the housing 31, and the first temperature control instrument 35 is electrically connected to the relay 33 and the temperature control module 34. The evaporator 32 heats the liquid transported by the constant flow pump 2 into steam. The first temperature control instrument 35 sets the heating temperature and sends a signal to the relay 33. The temperature control module 34 controls the heating temperature of the evaporator 32 in a PID manner.

[0026] A gas inlet is arranged on the housing 31. A rotameter 310 is arranged on the housing 31. The rotameter 310 is connected to the gas inlet and the evaporator 32 through a pipeline. The flow rate of the carrier gas entering the evaporator 32 is controlled by the rotameter 310.

[0027] A heat tracing cable socket 37 is arranged on the housing 31. A second temperature control instrument 38 is arranged on the housing 31, and the second temperature control instrument 38 is electrically connected to the heat tracing cable socket 37. A thermocouple 39 is arranged on one side of the heat tracing cable socket 37. The heat tracing cable socket 37 can be externally connected to a heat tracing cable. The second temperature control instrument 38 is used to control the temperature of the heat tracing cable, thereby preventing steam from condensing in the pipeline. The thermocouple 39 is used to detect the heat tracing temperature of the pipeline.

[0028] Working principle: The constant flow pump 2 transports the water in the liquid storage tank 1 to the evaporator 32. The constant flow pump 2 precisely controls the flow rate of the liquid entering the evaporator 32, and forms steam through heating by the evaporator 32. The carrier gas enters the evaporator 32 from the gas inlet, and the flow rate of the carrier gas is precisely controlled by the rotameter 310. The steam and the carrier gas are mixed in the evaporator 32 and then enter the temperature and humidity sensor 4 and are output. The temperature and humidity sensor 4 detects the temperature and humidity of the gas.

Claims

1. A humidity generating device, characterized in that, Including: A liquid storage tank, a constant flow pump, a gas generator, and a temperature and humidity sensor. The constant flow pump is connected to the liquid storage tank through a pipeline. The gas generator is connected to the constant flow pump through a pipeline. The temperature and humidity sensor is connected to the gas generator through a pipeline.

2. The humidity generating device according to claim 1, characterized in that The gas generator includes a housing. An evaporator is arranged inside the housing. The evaporator is connected to the constant flow pump through a pipeline. The evaporator is connected to the temperature and humidity sensor through a pipeline.

3. The humidity generating device according to claim 2, characterized in that, A gas inlet is arranged on the housing. The gas inlet is connected to the evaporator through a pipeline.

4. The humidity generating device according to claim 3, characterized in that, A rotameter is arranged on the housing. The rotameter is connected to the gas inlet and the evaporator through pipelines.

5. The humidity generating device according to claim 2, characterized in that, A relay is arranged on the evaporator. The relay is electrically connected to the evaporator.

6. A humidity generating device according to claim 5, wherein A temperature control module is arranged on the evaporator. The temperature control module is electrically connected to the evaporator.

7. A humidity generating device according to claim 6, characterized in that, A first temperature control instrument is arranged on the housing. The first temperature control instrument is electrically connected to the relay and the temperature control module.

8. The humidity generating device according to claim 2, characterized in that, A heat tracing socket is arranged on the housing.

9. The humidity generating device according to claim 8, characterized in that, A second temperature control instrument is arranged on the housing. The second temperature control instrument is electrically connected to the heat tracing socket.

10. A humidity generating device according to claim 8, characterized in that, A thermocouple is arranged on one side of the heat tracing socket.

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