CN213657273U - Far infrared drying device based on humidity control - Google Patents
Far infrared drying device based on humidity control Download PDFInfo
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- CN213657273U CN213657273U CN202022549228.XU CN202022549228U CN213657273U CN 213657273 U CN213657273 U CN 213657273U CN 202022549228 U CN202022549228 U CN 202022549228U CN 213657273 U CN213657273 U CN 213657273U
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Abstract
The application discloses a far infrared drying device based on humidity control, which comprises a box body, a material tray and an infrared heating plate, wherein the material tray and the infrared heating plate are installed in the box body; a first temperature and humidity sensor for measuring the temperature and humidity of the environment is arranged outside the box body; a second temperature and humidity sensor for measuring the temperature and humidity in the drying cavity is arranged in the drying cavity of the box body; a temperature sensor for measuring the temperature of the infrared heating plate is arranged below the infrared heating plate; the top of the box body is provided with a moisture exhaust fan; the box is externally provided with a controller which drives the moisture exhaust fan and the airflow circulating system to be opened and closed according to signals collected by the first temperature and humidity sensor, the second temperature and humidity sensor and the temperature sensor. The utility model has the advantages of reasonable design, can combine humidity and temperature value control drying, atmospheric control combines together with the far infrared drying, improves the dry uniformity of agricultural product material.
Description
Technical Field
The utility model belongs to the technical field of drying equipment, especially, relate to a far infrared drying device based on humidity control.
Background
The infrared drying is a method for drying by utilizing infrared radiation heat transfer, the infrared radiation can penetrate through the surface layer of the material to heat the material from the inside, and the infrared drying has the advantages of high heat flow density, high heating capacity and high temperature rising speed. Aiming at agricultural materials, the suitable infrared drying process has the functions of enzyme killing, insect killing, sterilization and the like.
The infrared heating plate has the characteristics of high heating efficiency, simple structure and small radiation distance, and is easy to assemble into a multilayer structure to be used as a heat source for infrared drying. In addition, the infrared heating plate has the characteristics of small thermal inertia, quick thermal response and high reliability, and also meets the requirement of agricultural products with high temperature sensitivity on an infrared heat source in the drying device.
Most of the prior art only installs 1 temperature sensor in the drying cavity of the drying box body of the material to obtain the whole temperature in the drying cavity, and controls the temperature according to the temperature, which easily causes the deterioration of the drying consistency of the material under the radiation of different heat sources.
Another part of the prior art is to attach a temperature sensor to the surface of the heat source, but the closer to the heat source, the more significant the effect of the non-uniformity of the temperature of the heat source. Even if the infrared heating plates are produced in the same batch in an industrialized batch, the surface temperature distribution of the infrared heating plates is difficult to be completely the same, and the surface temperature difference between different areas of the same heating plate even reaches 15 ℃, so the proposal is easy to cause the drying consistency of materials under the same heat source to be poor.
The relative humidity in the drying cavity has great influence on the drying quality, the drying speed and the drying energy consumption. If the moisture is not discharged in time in the early stage of drying, excessive water vapor is not beneficial to the absorption of the material on infrared radiation energy, and even dew is formed on the surface of the material; in the middle period, continuous moisture removal and over-high drying speed can cause the surface of the material to be crusted and influence the migration of moisture in the material.
In addition, the prior art lacks a humidity control means based on a drying process.
SUMMERY OF THE UTILITY MODEL
Based on the defects of the prior art, the technical problem to be solved by the invention is to provide the far infrared drying device based on humidity control, which has reasonable structural design, can control drying by combining humidity and temperature values, and improves the drying consistency of agricultural products by combining temperature and humidity control and far infrared drying.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes: the utility model provides a far infrared drying device based on humidity control, which comprises a box body, a plurality of layers of support bars which are arranged oppositely and arranged on the two side wall surfaces of the box body, and a material tray and an infrared heating plate which are fixed on the support bars and used for installing materials, wherein the upper part and the lower part of each layer of material tray are respectively provided with one infrared heating plate; an airflow circulating system for improving the temperature and humidity uniformity inside the drying cavity in the box body is arranged on one side of the box body; a first temperature and humidity sensor for measuring the temperature and humidity of the environment is arranged outside the box body; a second temperature and humidity sensor for measuring the temperature and humidity in the drying cavity is arranged in the drying cavity of the box body; a temperature sensor for measuring the temperature of the infrared heating plate is arranged below the infrared heating plate; the top of the box body is provided with a moisture exhaust fan communicated with the drying cavity in the box body; the box body is externally provided with a controller which is used for driving the moisture exhaust fan and the airflow circulating system to be opened and closed according to signals collected by the first temperature and humidity sensor, the second temperature and humidity sensor and the temperature sensor.
Optionally, the airflow circulating system includes a turbulent fan installed at the back of the box body, and an impeller protective cover is arranged outside the turbulent fan.
Furthermore, each supporting strip is provided with a strip-shaped hole for improving the air flow fluidity between layers.
Further, temperature sensor with infrared heating plate separation sets up, temperature sensor's sensitive face is towards its bottom surface of measuring infrared heating plate, and the interval between its sensitive face and the bottom surface of infrared heating plate is 10 ~ 15 mm.
Optionally, the distance between the charging tray and the infrared heating plate positioned above and below the charging tray is 25-50 mm.
Optionally, the top of box is equipped with the hydrofuge hole, and its bottom is equipped with the air vent, the hydrofuge fan is installed in the hydrofuge hole.
Furthermore, the box body is of a double-layer structure, and the inside of the double-layer structure is filled with heat insulation materials.
By last, the utility model discloses a far infrared drying device based on humidity control possesses following beneficial effect at least:
1. each infrared heating plate is provided with an independent temperature sensor for temperature measurement, and independent temperature control is carried out through a control system, so that the drying consistency of materials under different heat source radiation can be ensured.
2. The temperature sensor and the infrared heating plate are installed in a separated mode, the sensitive surface of the temperature sensor faces the bottom surface of the infrared heating plate, the distance between the sensitive surface and the bottom surface is 10-15 mm, and adverse effects of temperature differences of different areas of the same infrared heating plate on drying consistency can be effectively reduced.
3. The dehumidifying fan at the top of the box body is in an intermittent working mode, so that temperature changing and humidity controlling drying can be carried out according to the characteristics of materials and the temperature and humidity state of the current drying cavity. The influence of the relative humidity in the drying cavity on the heat transfer efficiency can be balanced to a great extent, the moisture absorption capacity of the heating medium can be fully utilized, the dewing on the surface of the material is inhibited, the migration of the internal moisture is promoted, the moisture content difference between the materials is effectively eliminated in the later drying stage, and the drying consistency is further ensured.
4. The back of the drying cavity is provided with the low-flow centrifugal fan for turbulent flow, so that the temperature and relative humidity of each area in the drying cavity are improved.
5. The sensor for acquiring the temperature and the humidity of the environment near the drying device is arranged, so that a basis can be provided for the operation of the drying device and the setting of drying parameters.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following detailed description is given in conjunction with the preferred embodiments, together with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a far infrared drying device based on humidity control according to the present invention;
fig. 2 is a schematic structural diagram of a support bar of the far infrared drying device based on humidity control according to the present invention;
fig. 3 is a schematic structural diagram of the impeller protection cover of the far infrared drying device based on humidity control according to the present invention.
The device comprises a box body 1, a support bar 2, a material tray 3, a temperature sensor 4, an infrared heating plate 5, a first temperature and humidity sensor 6, a humidity discharging hole 7, a humidity discharging fan 8, a controller 9, a second temperature and humidity sensor 10, an impeller protective cover 11, a turbulent flow fan 12 and an air vent 13.
Detailed Description
Other aspects, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which form a part of this specification, and which illustrate, by way of example, the principles of the invention. In the referenced drawings, the same or similar components in different drawings are denoted by the same reference numerals.
It should be noted that all the directional indicators (such as upper, lower, left and right … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. For example, "top" corresponds to the upper side in fig. 1.
As shown in fig. 1 to fig. 3, the utility model discloses a far infrared drying device based on humidity control mainly comprises box 1, air current circulation system, infrared heating board 5, charging tray 3, temperature and humidity control system.
Wherein, the box body 1 is of a double-layer structure, and the inside of the double-layer structure is filled with heat insulation materials. The front part of the box body 1 is provided with a door, the top part of the box body is provided with a moisture exhaust hole 7, and the bottom part of the box body is provided with a vent hole 13. The two side wall surfaces of the box body 1 are fixed with a plurality of layers of support bars 2 which are oppositely arranged according to a certain vertical distance, and the support bars 2 are used for fixing the infrared heating plate 5 and supporting the material tray 3. The support bars 2 are provided with elongated holes 21 to improve the flow of air between the layers. An infrared heating plate 5 is respectively installed above and below each charging tray 3, and the distance between each charging tray 3 and the infrared heating plate 5 above and below is 25-50 mm.
The utility model discloses an air current circulation system comprises vortex fan 12 and impeller protection casing 11, and wherein vortex fan 12 mountable is on the box back.
The temperature and humidity control system of the utility model is composed of a first temperature and humidity sensor 6, a second temperature and humidity sensor 10, a temperature sensor 4, a dehumidifying fan 8 and a controller 9, wherein the first temperature and humidity sensor 6 is positioned outside the box body 1 and is used for measuring the environmental temperature and humidity; the second temperature and humidity sensor 10 is located in the drying cavity inside the box body 1 and used for measuring the temperature and humidity inside the drying cavity. Every infrared heating plate 5 all carries out temperature measurement by corresponding temperature sensor 4, and temperature sensor 4 installs 10 ~ 15mm department below corresponding infrared heating plate 5. The controller 9 is used for collecting signals output by the first temperature and humidity sensor 6, the second temperature and humidity sensor 10 and the temperature sensor 4, driving the moisture exhaust fan 8 and the turbulent flow fan 12, controlling the temperature of each infrared heating plate 5 independently, and has a man-machine interaction function. Wherein, the moisture exhausting fan 8 is arranged in the moisture exhausting hole 7 at the top of the box body 1.
The utility model discloses in, humidity control drying process does: the air flow circulating system adopts a continuous or intermittent working mode to improve the temperature and humidity uniformity inside the drying cavity; after the drying process is started, on the premise of ensuring that the surface of the material is not condensed, the humidity of air in the drying cavity is maintained at a high level by controlling the humidity discharge. At some point in time as the drying process proceeds, even if the humidity is no longer being exhausted, the air humidity content cannot be maintained at the equilibrium point, and at this point the system automatically lowers the equilibrium point and maintains the air humidity content inside the drying chamber at the equilibrium point by controlling the humidity exhaust. And similar humidity control strategies are adopted in the subsequent drying process until the moisture content of the air reaches a certain set level, and the drying process is finished. The set level of the moisture content of the air as the end condition of the drying process needs to be determined in combination with the external environment temperature and humidity state, the internal temperature state of the drying chamber and the characteristics of the material to be dried.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (7)
1. The utility model provides a far infrared drying device based on humidity control, includes the box, installs the relative support bar that sets up of multilayer of the both sides wall face of box, be fixed in charging tray and infrared heating board that are used for installing the material on the support bar, its characterized in that: an infrared heating plate is respectively arranged above and below each layer of material tray;
an airflow circulating system for improving the temperature and humidity uniformity inside the drying cavity in the box body is arranged on one side of the box body;
a first temperature and humidity sensor for measuring the temperature and humidity of the environment is arranged outside the box body;
a second temperature and humidity sensor for measuring the temperature and humidity in the drying cavity is arranged in the drying cavity of the box body;
a temperature sensor for measuring the temperature of the infrared heating plate is arranged below the infrared heating plate;
the top of the box body is provided with a moisture exhaust fan communicated with the drying cavity in the box body;
the box body is externally provided with a controller which is used for driving the moisture exhaust fan and the airflow circulating system to be opened and closed according to signals collected by the first temperature and humidity sensor, the second temperature and humidity sensor and the temperature sensor.
2. The far infrared drying device based on humidity control as claimed in claim 1, wherein the air circulation system comprises a turbulent fan installed at the back of the box body, and an impeller shield is installed outside the turbulent fan.
3. The far infrared drying apparatus based on humidity control as set forth in claim 1, wherein each supporting strip is provided with elongated holes for improving air flow fluidity between the layers.
4. The far infrared drying device based on humidity control as claimed in claim 1, wherein the temperature sensor is disposed separately from the infrared heating plate, a sensitive surface of the temperature sensor faces a bottom surface of the infrared heating plate measured by the temperature sensor, and a distance between the sensitive surface of the temperature sensor and the bottom surface of the infrared heating plate is 10-15 mm.
5. The far infrared drying apparatus based on humidity control as claimed in claim 1, wherein the distance between the tray and the infrared heating plate above and below the tray is 25-50 mm.
6. The far infrared drying apparatus based on humidity control as claimed in claim 1, wherein the top of the cabinet is provided with a moisture exhaust hole, the bottom thereof is provided with an air vent, and the moisture exhaust fan is installed in the moisture exhaust hole.
7. The far infrared drying apparatus based on humidity control as claimed in claim 1, wherein the cabinet is a double-layer structure, and the inside of the double-layer structure is filled with thermal insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022549228.XU CN213657273U (en) | 2020-11-06 | 2020-11-06 | Far infrared drying device based on humidity control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022549228.XU CN213657273U (en) | 2020-11-06 | 2020-11-06 | Far infrared drying device based on humidity control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213657273U true CN213657273U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022549228.XU Active CN213657273U (en) | 2020-11-06 | 2020-11-06 | Far infrared drying device based on humidity control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213657273U (en) |
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2020
- 2020-11-06 CN CN202022549228.XU patent/CN213657273U/en active Active
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