CN203274455U - Microwave drying device - Google Patents

Microwave drying device Download PDF

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Publication number
CN203274455U
CN203274455U CN 201320005609 CN201320005609U CN203274455U CN 203274455 U CN203274455 U CN 203274455U CN 201320005609 CN201320005609 CN 201320005609 CN 201320005609 U CN201320005609 U CN 201320005609U CN 203274455 U CN203274455 U CN 203274455U
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CN
China
Prior art keywords
microwave source
drying device
hot
workspace
microwaves
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Expired - Lifetime
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CN 201320005609
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Chinese (zh)
Inventor
单忠德
王绍宗
吴双峰
张倩
靳云发
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Advanced Manufacture Technology Center China Academy of Machinery Science and Technology
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Advanced Manufacture Technology Center China Academy of Machinery Science and Technology
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Priority to CN 201320005609 priority Critical patent/CN203274455U/en
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Publication of CN203274455U publication Critical patent/CN203274455U/en
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Abstract

The utility model relates to a microwave drying device, which comprises a heating cavity, a microwave source working area and a fan. The heating cavity is used for placing to-be-dried materials, the microwave source working area is provided with a microwave source for heating, and the fan is used for conducting cold air for the microwave source working area so as to lower the temperature of the microwave source and exhaust generated hot air. The microwave drying device further comprises a hot air pipeline and a hot air recycle device, wherein the hot air pipeline is used for collecting the hot air exhausted by the fan; and the hot air recycle device is connected with the hot air pipeline to be used for delivering the hot air into the heating cavity. According to the technical scheme, the hot air exhausted from the microwave source working area is recycled and delivered to the heating cavity, materials which are subjected to microwave drying in the heating cavity are subjected to auxiliary hot air function, so that the emission of vapor on the surface of materials is effectively accelerated, and a remarkable promoting function is provided for acceleration of a drying process and improvement of drying quality.

Description

Drying device by microwaves
Technical field
The utility model relates to the microwave drying field, relates in particular to a kind of drying device by microwaves.
Background technology
At present, in the process of utilizing drying device by microwaves that material (for example cheese) is dried, microwave source produces the microwave of oven dry use, because microwave source can produce higher heat at work, make the workspace at microwave source place have higher temperature, if microwave source is under the duty of high temperature for a long time, will affect the service life of microwave source, therefore need to carry out cooling to microwave source and workspace thereof.
In prior art, generally adopting blower fan is microwave source workspace introducing cold air, becomes hot-air after described cold air contacts with microwave source and discharges, thereby be microwave source and workspace cooling thereof.This type of cooling in atmosphere, causes the loss of energy with the exhaust of hot air that produces, is unfavorable for energy-saving and emission-reduction.Therefore, be necessary to improve for the defects that exists in prior art.
The utility model content
Main purpose of the present utility model is to provide a kind of drying device by microwaves, and it has saved the energy by the recycling to hot-air.
To achieve these goals, according to the utility model, a kind of drying device by microwaves is provided, comprise heating chamber, microwave source workspace and blower fan, described heating chamber is used for placing material to be dried, described microwave source workspace is provided with the microwave source of heating use, and described blower fan is that described microwave source workspace introducing cold air is described microwave source cooling, also discharges the hot-air that produces, and described drying device by microwaves also comprises:
Hot-blast pipe line is collected the hot-air that described blower fan is discharged;
Hot blast recycling device is connected with described hot-blast pipe line and described hot-air is sent in described heating chamber.
Further, described heating chamber is positioned at the below of described microwave source workspace, and described hot blast recycling device is positioned at the below of described heating chamber.
Further, described hot blast recycling device has along the hot blast throughput direction and is from upstream to acclivitous bottom surface gradually, downstream.
Further, described drying device by microwaves also comprises:
Temperature sensor is arranged in described microwave source workspace and detects temperature in described microwave source workspace;
Temperature control unit is electrically connected to described temperature sensor and is used for opening and closing by setup program described blower fan.
Further, described drying device by microwaves also comprises:
Fan is used to described microwave source workspace introducing cold air.
According to the technical solution of the utility model, because the hot-air that will discharge from the microwave source workspace reclaims, and send back in heating chamber, the material that carries out microwave drying in heating chamber is assisted the hot blast effect, thereby effectively accelerated distributing of the surperficial steam of material, had obvious facilitation to accelerating the oven dry process and improving dries quantity.
In addition, by set temperature sensor and temperature control unit, can control in real time the start/stop of blower fan according to the actual temperature in the microwave source workspace, save the energy, reduce the loss of blower fan.In addition; calculate in advance the first preset value, the second preset value and predetermined amount of time according to the actual conditions of microwave source and microwave source workspace; can in time regulate the cold air amount of sending in the microwave source workspace according to the actual temperature in the microwave source workspace; thereby protect more effectively, in time microwave source; avoid its long-term work at too high temperature, the service life of having improved microwave source.
Description of drawings
Figure of description is used to provide further understanding of the present utility model, consists of a part of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of drying device by microwaves of the present utility model.
The specific embodiment
Need to prove, in the situation that clearly do not limit or do not conflict, the feature in each embodiment of the present utility model can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Fig. 1 is the structural representation of drying device by microwaves of the present utility model.As shown in Figure 1, drying device by microwaves comprises heating chamber 10 and microwave source workspace 20.Be placed with material to be dried 11 in heating chamber 10, such as cheese etc.These materials 11 as required the space, be placed in heating chamber 10 equably, to guarantee the uniformity of drying materials.
Microwave source workspace 20 is positioned at the top of heating chamber 10, wherein is provided with the one or more microwave sources 30 for generation of microwave.When microwave source 30 when being a plurality of, these microwave sources 30 can be evenly distributed in microwave source workspace 10 as required.Microwave source 30 is sent to the microwave that produces in heating chamber 10 by unshowned passage in Fig. 1, and the material to be dried 11 in heating chamber 10 is heated.
Microwave source 30 can produce heat in the course of the work, makes the temperature in microwave source workspace 20 raise gradually, if microwave source 30 is worked under higher temperature for a long time, just may shorten the working life of microwave source 30.In order to reduce the temperature in microwave source workspace 20, blower fan 40 has been installed in the outside of a side of 20 in the microwave source workspace.
With reference to Fig. 1, be positioned at the top of heating chamber 10 due to microwave source workspace 20, microwave source workspace 20 is in higher position in whole drying device by microwaves, therefore, can blower fan 40 be arranged at suitable height by supporting construction (for example support bar), make it be in the outside of microwave source workspace 20.Thus, be convenient to lay the pipeline that is connected with blower fan 40 etc., also be convenient to maintenance or more ventilating fan 40 and parts thereof.
Be provided with the exhaust passage (Fig. 1 is not shown) for Bas Discharged between microwave source workspace 20 and blower fan 40, equally, other walls (for example forward and backward side or end face, be preferably on another side relative with described blower fan setting position) of 20 also have the passage for circulation of air in the microwave source workspace.
When blower fan 40 is started working, due to its pump-absorb action, cold air outside microwave source workspace 20 is introduced within described microwave source workspace 20 (as shown by arrow A), with become hot-air after wherein microwave source 30 contacts, then be discharged to outside microwave source workspace 20 (as shown by arrow B) through the exhaust passage between blower fan 40 and microwave source workspace 20, collected by blower fan 40.
Drying device by microwaves of the present utility model also is provided with hot-blast pipe line 50 and hot blast recycling device 60.Hot-blast pipe line 50 is connected with blower fan 40, and the hot-air that blower fan 40 is collected is sent into hot blast recycling device 60(as shown by arrow C).Hot blast recycling device 60 is a cavity, and is positioned at the below of heating chamber 10.
With reference to Fig. 1, hot blast recycling device 60 has an entrance that is communicated with hot-blast pipe line 50, also has the outlet that bottom surface a plurality of and heating chamber 10 communicates, except described entrance and exit, the remainder of hot blast recycling device 60 seals, and has consisted of the cavity of base closed.
Because the described outlet of hot blast recycling device 60 is arranged on the bottom surface of heating chamber 10, being conducive to hot-air flows (as shown by arrow D) from the bottom to top, can assist the hot blast effect to the material 11 that carries out microwave drying in heating chamber 10, thereby effectively accelerated distributing of material 11 surface water steams, had obvious facilitation to accelerating the oven dry process and improving dries quantity.
In addition, as shown in Figure 1, hot blast recycling device 60 has along the hot blast throughput direction and is from upstream to the bottom surface that the downstream upwards tilts gradually, can guarantee that hot-air is at the comparatively uniform wind speed of hot-blast outlet place's maintenance, thereby be conducive to hot-air is sent in heating chamber 10 equably by a plurality of outlets, improve the uniformity of auxiliary hot blast effect, made the material 11 in heating chamber 10 be heated more even.Certainly, the angle of inclination of described bottom surface can specifically be set according to physical conditions such as the size of heating chamber, hot blast recycling device and quantity of hot air.
In drying device by microwaves shown in Figure 1, if blower fan 40 continuous operation all the time might cause the increase of blower fan 40 energy consumptions, also unfavorable to the service life of blower fan 40.Therefore, can also be at microwave source workspace 20 interior set temperature sensors 80.Temperature sensor 80 is measured the temperature in microwave source workspace 20, and measured value is sent to the unshowned temperature control unit of Fig. 1.Temperature control unit can more described measured value and predefined the first setting value.Described the first setting value is the safe temperature in the microwave source workspace of measuring in advance, when microwave source 30 is worked in the environment of the following temperature of this first setting value, substantially can not affect its service life, otherwise, if microwave source 30 long-term works can affect its working life in the environment of the above temperature of this first setting value.
Therefore, if described measured value is higher than the first setting value, temperature control unit can send signal to blower fan 40, starting blower fan 40 is microwave source workspace 20 coolings, if described measured value is lower than the first setting value, temperature control unit can send signal to blower fan 40, does not does not start or stop the blower fan 40 that has started.
In this way, when the temperature in microwave source workspace 20 can not damaged the service life of microwave source 30, can not start or stop the blower fan 40 that has started, thereby save energy, also avoid the meaningless loss of blower fan 40.
In addition, as shown in Figure 1, described drying device by microwaves can also comprise aerofoil fan 70, and it is arranged on the top of described microwave source workspace 20.The temperature that records when temperature sensor 80 is during higher than the second setting value, for avoiding only relying on blower fan 40 to be not enough to the temperature of fast reducing microwave source 30, thereby affect the service life of microwave source 30, temperature control unit can be opened aerofoil fan 70, increases the cold air amount enter in microwave source workspace 20.The temperature that records when temperature sensor 80 is during lower than described the second setting value, and temperature control unit closing axle flow fan 70 is to avoid unnecessary energy consumption.Perhaps, when the temperature that also can by the time record set value lower than described first, temperature control unit is closing axle flow fan 70, so more promptly workspace, cooled microwave source and microwave source.
Described the second setting value can be measured in advance and arrange according to the actual conditions of microwave source and microwave source workspace, its numerical value is higher than aforementioned the first setting value, if the temperature in the microwave source workspace is higher than this second setting value, show that microwave source 30 is in the hole, need to reduce as early as possible the temperature in the microwave source workspace.
In addition, the entry condition of aerofoil fan 70 except the second setting value, can also be that the temperature in microwave source workspace 20 were in for the first above time period of setting value.If the temperature in microwave source workspace 20 does not surpass the second setting value, but surpass the first setting value, and experienced the time that surpasses predetermined amount of time, shown that microwave source 30 does not obtain cooling timely, also may affect its service life.Described predetermined amount of time can be measured in advance and arrange according to the actual conditions of microwave source and microwave source workspace, can be for a long time not work surpassing under the first environment that sets value to guarantee microwave source.
In this way, can guarantee that the temperature in microwave source workspace 20 are no more than the second setting value as far as possible, perhaps not be in for a long time the state that surpasses the first setting value, thereby further protected microwave source 30.
Drying device by microwaves of the present utility model has been described according to embodiment in the front, but this device is not limited in the parts described in described embodiment and/or annexation, for example, heating chamber, microwave source workspace, blower fan and hot blast recycling device etc. are not limited to the position relationship in this embodiment, as long as the hot-air that the microwave source workspace can be discharged is sent back in heating chamber, can realize the purpose of the utility model; Except aerofoil fan, also can adopt other to have the fan that impels Air Flow.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (5)

1. drying device by microwaves, comprise heating chamber, microwave source workspace and blower fan, described heating chamber is used for placing material to be dried, described microwave source workspace is provided with the microwave source of heating use, described blower fan is that described microwave source workspace introducing cold air is that the hot-air that produces is lowered the temperature, also discharged to described microwave source, it is characterized in that, described drying device by microwaves also comprises:
Hot-blast pipe line is collected the hot-air that described blower fan is discharged;
Hot blast recycling device is connected with described hot-blast pipe line and described hot-air is sent in described heating chamber.
2. drying device by microwaves according to claim 1, is characterized in that, described heating chamber is positioned at the below of described microwave source workspace, and described hot blast recycling device is positioned at the below of described heating chamber.
3. drying device by microwaves according to claim 2, is characterized in that, described hot blast recycling device has along the hot blast throughput direction and is from upstream to acclivitous bottom surface gradually, downstream.
4. the described drying device by microwaves of any one according to claim 1 to 3, is characterized in that, described drying device by microwaves also comprises:
Temperature sensor is arranged in described microwave source workspace and detects temperature in described microwave source workspace;
Temperature control unit is electrically connected to described temperature sensor and is used for opening and closing by setup program described blower fan.
5. drying device by microwaves according to claim 4, is characterized in that, described drying device by microwaves also comprises:
Fan is used to described microwave source workspace introducing cold air.
CN 201320005609 2013-01-06 2013-01-06 Microwave drying device Expired - Lifetime CN203274455U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320005609 CN203274455U (en) 2013-01-06 2013-01-06 Microwave drying device

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Application Number Priority Date Filing Date Title
CN 201320005609 CN203274455U (en) 2013-01-06 2013-01-06 Microwave drying device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103017505A (en) * 2013-01-06 2013-04-03 机械科学研究总院先进制造技术研究中心 Microwave drying device and hot air recycling method
CN106738435A (en) * 2016-12-29 2017-05-31 天津莱沃真空干燥设备制造有限公司 Rapid drying device and drying means after a kind of plastic extruding pelletization

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103017505A (en) * 2013-01-06 2013-04-03 机械科学研究总院先进制造技术研究中心 Microwave drying device and hot air recycling method
CN103017505B (en) * 2013-01-06 2015-05-06 机械科学研究总院先进制造技术研究中心 Microwave drying device and hot air recycling method
CN106738435A (en) * 2016-12-29 2017-05-31 天津莱沃真空干燥设备制造有限公司 Rapid drying device and drying means after a kind of plastic extruding pelletization

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Granted publication date: 20131106

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