Potato drying and ventilating system

Abstract

The utility model relates to the technical field of potato processing devices, in particular to a potato drying and ventilating system which comprises a drying chamber, a conveying chain and a return chain are arranged in the drying chamber, the conveying chain and the return chain form a ventilating separator, and the ventilating separator divides the drying chamber into an upper-layer drying chamber and a lower-layer drying chamber; an upper-layer finned heat exchanger and an air inlet pipeline are mounted on the drying chamber; a three-way pipe is arranged on the drying chamber, the first end of the three-way pipe is connected with the upper-layer finned heat exchanger, the second end of the three-way pipe is connected with the air inlet pipeline, the third end of the three-way pipe is connected with an exhaust pipeline, the end, not connected with the three-way pipe, of the exhaust pipeline is communicated with the lower-layer drying chamber, and a centrifugal fan is installed on the exhaust pipeline. According to the potato drying and ventilating system, the operation wind resistance is greatly reduced, and the phenomenon of blockage caused by fin deformation is not prone to occurring, so that the air volume is more sufficient, the drying effect of potato chips is improved, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of potato processing devices, in particular to a potato drying and ventilation system. Background Art

[0002] The processing of French fries generally goes through the steps of drying - coating with flour - air knife draining - frying, among which the drying process is done by using a dryer, such as Figure 1 and Figure 2 As shown, the drying process of the existing dryer is as follows:

[0003] 1. The centrifugal fan 6 draws outdoor air through the air inlet duct 5 and delivers the pressurized air to the upper finned heat exchanger 3 through energy conversion;

[0004] 2. The finned heat exchanger heats the gas before it enters the dryer;

[0005] 3. The hot air passes through the French fries and the conveyor chain 9 and the return chain 10 and enters the lower layer of the dryer.

[0006] 4. Using the pressure difference, the hot air passes through the lower finned heat exchanger 2 for a second time to increase the temperature.

[0007] 5. The hot air passes through the return chain, the conveyor chain and the French fries twice from bottom to top and is discharged by the axial flow fan 11 at the top of the dryer.

[0008] The above-mentioned dryer has the following disadvantages:

[0009] 1. The upper fin heat exchanger and the lower fin heat exchanger have a large resistance to the flow of air. The fins are prone to deformation and blockage after long-term use, resulting in insufficient air volume and affecting the drying effect of French fries;

[0010] 2. The hot air passes through the return chain, conveyor chain and French fries twice from bottom to top and is directly discharged through the axial flow fan, causing a large amount of waste heat loss. The upper finned heat exchanger is required to quickly replenish heat to meet the requirements of French fries drying, resulting in energy waste. Utility Model Content

[0011] In view of the problems existing in the above-mentioned prior art, the utility model provides a potato drying ventilation system to solve at least one of the above-mentioned technical problems.

[0012] In order to achieve the above-mentioned utility model purpose, a technical solution provided by the utility model is as follows:

[0013] A potato drying ventilation system comprises a drying chamber, wherein a conveying chain and a return chain are arranged in the drying chamber, wherein the conveying chain and the return chain form a ventilation partition, and wherein the ventilation partition divides the drying chamber into an upper drying chamber and a lower drying chamber; an upper finned heat exchanger and an air inlet duct are installed on the drying chamber; a three-way pipe is arranged on the drying chamber, wherein a first end of the three-way pipe is connected to the upper finned heat exchanger, a second end is connected to the air inlet duct, and a third end is connected to an exhaust duct, an end of the exhaust duct not connected to the three-way pipe is communicated with the lower drying chamber, and a centrifugal fan is installed on the exhaust duct.

[0014] Preferably, an air valve is installed on the air inlet duct.

[0015] Preferably, the upper fin heat exchanger is a fin heater, the air inlet of the fin heater is connected to the upper drying chamber, and the air outlet of the fin heater is connected to the three-way pipe.

[0016] Preferably, the fin heater is an electric fin heater.

[0017] Preferably, the drying chamber is a drying chamber of a dryer.

[0018] The drying process of the potato drying ventilation system provided by the utility model is as follows:

[0019] 1. The centrifugal fan extracts the air inside the drying chamber and a small amount of outdoor air at normal temperature through the exhaust duct and the tee pipe;

[0020] 2. The air inside the drying chamber is heated by the finned heat exchanger and then enters the centrifugal fan;

[0021] 3. After the energy conversion of the centrifugal fan, the pressurized hot air is transported to the lower drying chamber through the exhaust duct;

[0022] 4. Use the pressure difference to let the hot air pass through the return chain, conveyor chain and French fries.

[0023] 5. The centrifugal fan extracts the air inside the drying chamber and a small amount of outdoor air at normal temperature again. The hot air after passing through the return chain, conveyor chain and French fries is heated and recycled through the upper finned heat exchanger.

[0024] The potato drying ventilation system provided by the utility model has the following advantages:

[0025] 1. The lower fin heat exchanger is removed, and only the upper fin heat exchanger produces resistance to the flow of air, which greatly reduces the running wind resistance and is not prone to fin deformation and blockage, thereby making the air volume more sufficient and improving the drying effect of French fries;

[0026] 2. The hot air passes through the return chain, conveyor chain and French fries from bottom to top, and then is directly heated by the finned heat exchanger and enters the exhaust duct through the three-way pipe again. The hot air passing through the return chain, conveyor chain and French fries is reused. It only needs the upper finned heat exchanger to quickly replenish the heat lost during the operation of the hot air to meet the requirements of French fries drying, which greatly saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A front structural schematic diagram of an existing potato drying and ventilation system is shown;

[0028] Figure 2 A schematic diagram of the side structure of an existing potato drying and ventilation system is shown;

[0029] Figure 3 A schematic diagram of the front structure of a potato drying and ventilation system in an embodiment is shown;

[0030] Figure 4 A schematic diagram of the side structure of a potato drying and ventilation system in the embodiment is shown;

[0031] The arrows in the accompanying drawings schematically show the flow direction of the airflow;

[0032] Reference numerals in the accompanying drawings:

[0033] Three-way pipe 1, lower finned heat exchanger 2, upper finned heat exchanger 3, air valve 4, air inlet duct 5, centrifugal fan 6, exhaust duct 8, conveying chain 9, return chain 10, axial flow fan 11, upper drying chamber 12, lower drying chamber 13. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] For examples, see Figure 3 and Figure 4, the embodiment of the present application provides a potato drying ventilation system, including a drying chamber, in which the drying chamber is a drying chamber of a dryer, a conveying chain 9 and a return chain 10 are arranged in the drying chamber, the conveying chain and the return chain form a ventilation partition, and the ventilation partition divides the drying chamber into an upper drying chamber 12 and a lower drying chamber 13; an upper finned heat exchanger 3 and an air inlet duct 5 are installed on the drying chamber; a three-way pipe 1 is arranged on the drying chamber, the first end of the three-way pipe is connected to the upper finned heat exchanger, the second end is connected to the air inlet duct, and the third end is connected to an exhaust duct 8, the end of the exhaust duct not connected to the three-way pipe is connected to the lower drying chamber, and a centrifugal fan 6 is installed on the exhaust duct. It should be noted that the first end, the second end and the third end of the three-way pipe are only for the convenience of description, and are not a limitation on the port of the three-way pipe.

[0036] In actual production, the upper fin heat exchanger can be a fin heater, which is preferably an electric fin heater. The air inlet of the fin heater is connected to the upper drying chamber, and the air outlet of the fin heater is connected to the three-way pipe.

[0037] The drying process of the dryer provided in this embodiment is as follows:

[0038] 1. The centrifugal fan extracts the air inside the drying chamber and a small amount of outdoor air at normal temperature through the exhaust duct and the tee pipe;

[0039] 2. The air inside the drying chamber is heated by the finned heat exchanger and then enters the centrifugal fan;

[0040] 3. After the energy conversion of the centrifugal fan, the pressurized hot air is transported to the lower drying chamber through the exhaust duct;

[0041] 4. Use the pressure difference to let the hot air pass through the return chain, conveyor chain and French fries.

[0042] 5. The centrifugal fan extracts the air inside the drying chamber and a small amount of outdoor air at normal temperature again. The hot air after passing through the return chain, conveyor chain and French fries is heated and recycled through the upper finned heat exchanger.

[0043] The above potato drying ventilation system has the following advantages:

[0044] 1. The lower fin heat exchanger is removed, and only the upper fin heat exchanger produces resistance to the flow of air, which greatly reduces the running wind resistance and is not prone to fin deformation and blockage, thereby making the air volume more sufficient and improving the drying effect of French fries;

[0045] 2. The hot air passes through the return chain, conveyor chain and French fries from bottom to top, and then is directly heated by the finned heat exchanger and enters the exhaust duct through the three-way pipe again. The hot air passing through the return chain, conveyor chain and French fries is reused. It only needs the upper finned heat exchanger to quickly replenish the heat lost during the operation of the hot air to meet the requirements of French fries drying, which greatly saves energy.

[0046] In one embodiment, an air valve 4 is installed on the air inlet duct, and the air intake of the air inlet duct can be adjusted by the air valve to appropriately supplement the air flow loss in the non-sealed part of the drying chamber of the dryer (such as the feed inlet).

[0047] It should be noted that the potato drying ventilation system in this embodiment can be used not only for drying French fries, but also for drying potato chips, potato wedges or other foods.

[0048] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0049] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0050] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0051] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A potato drying ventilation system, comprising a drying chamber, wherein a conveying chain (9) and a return chain (10) are arranged in the drying chamber, wherein the conveying chain and the return chain form a ventilation partition, and the ventilation partition divides the drying chamber into an upper drying chamber (12) and a lower drying chamber (13); An upper finned heat exchanger (3) and an air inlet duct (5) are installed on the drying chamber; It is characterized in that The drying chamber is provided with a three-way pipe (1), the first end of the three-way pipe is connected to the upper finned heat exchanger, the second end is connected to the air inlet duct, and the third end is connected to an exhaust duct (8), the end of the exhaust duct not connected to the three-way pipe is in communication with the lower drying chamber, and a centrifugal fan (6) is installed on the exhaust duct.

2. A potato drying ventilation system according to claim 1, characterized in that: An air valve (4) is installed on the air inlet duct.

3. A potato drying ventilation system according to claim 1 or 2, characterized in that: The upper fin heat exchanger is a fin heater, the air inlet of the fin heater is connected to the upper drying chamber, and the air outlet of the fin heater is connected to the three-way pipe.

4. A potato drying ventilation system according to claim 3, characterized in that: The fin heater is an electric fin heater.

5. A potato drying ventilation system according to claim 1, characterized in that: The drying chamber is a drying chamber of a dryer.

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