Wet bulb temperature or humidity control method for drying process
A technology of wet bulb temperature and drying process, which is applied in the direction of drying solid materials, drying, lighting and heating equipment, etc., and can solve problems such as energy waste, poor quality of wood drying, and unstable state of wet air
Inactive Publication Date: 2009-01-28
LANGFANG HUARI FURNITURE CO LTD
View PDF7 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The main disadvantage is that the state of humid air in the drying process is unstable, resulting in poor wood drying quality, serious energy waste, and high drying energy consumption. At the same time, due to repeated opening and closing of valves, the service life of these devices is shortened.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] The drying process is divided into two types according to the stages, namely the actual drying process and the humidification process. In the actual drying process, humidification is usually not required, and only water is evaporated from the dried object. The air humidity continues to increase. When it reaches a certain level, Open the dehumidification valve 7 to reduce the humidity, and then close the dehumidification valve when the wet bulb temperature reaches the set temperature. Operations that reduce drying stress or that the moisture in the product is too low due to drying, such as when the wood drying stress reaches a certain level, increase the wet bulb temperature for humidification treatment, so that the wood absorbs part of the moisture in the steam to release the stress in the wood , to reduce the loss of product degradation, when the humidity in the air drops, the humidification valve 6 is opened when the lower limit is reached, and the humidification valve...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A method for controlling the temperature or humidity of humid ball in dry process resolves the problems of short service life of valve and high energy consumption. The invention sets the upper deflect of temperature TS as +DeltaT; when absorbs the water of dried object, the temperature Ta of humid ball increases, and the humidity of dehumidify valve is reduced; when the temperature is reduced to TS, the dehumidify valve is closed, when the temperature Ta increases again, the dehumidify valve is opened again. When in the dehumidification, the low deflect of temperature TS is -DeltaT; when the temperature Ta decreases, the humidity of humidify valve increases, when the temperature reaches preset valve TS, the humidify valve is closed; and when the dried object absorbs water, and the temperature Ta reduces, the humidify valve will be opened. The invention can stably control the temperature of humid ball, reduce the energy consumption and prolong the service life.
Description
technical field [0001] The invention belongs to the field of drying, that is, a device for drying objects by controlling the temperature and humidity of humid air in a closed space. Background technique [0002] Usually, in the normal drying process, the drying temperature in the drying equipment 1 is gradually increased. By controlling the opening of the heating valve 5, the steam passes through the heater 3, and the circulation fan 2 makes the heat dissipation efficiency of the heater high, and makes the air state in the entire drying equipment uniform. Use the temperature difference between dry and wet bulbs to control the humidity in the drying equipment. When the humidity needs to be reduced, it is completed by opening the dehumidification valve 7; Generally, the dry bulb temperature and wet bulb temperature are controlled separately, that is, according to the requirements of the wood drying stage, the opening and closing of the heating valve 5 is controlled to maintain...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F26B25/22
Inventor 周永东
Owner LANGFANG HUARI FURNITURE CO LTD