KR102431531B1 - High-efficiency heat exchanger for drying equipment for agricultural and fishery products by using automatic temperature and humidity control method and negative pressure interlocking system - Google Patents

Abstract

The present invention relates to a high-efficiency heat exchanger for an agricultural and fishery products drying apparatus using a negative pressure-linked automatic temperature and humidity control system. The technical gist of the present invention lies, as a dependent invention of the invention of patent registration No. 10-2341485, in the feature that the outside air (cold air) introduced into a drying chamber by the negative pressure effect is preheated through bundled pipes of a heat exchange chamber (arranged on a pipeline where high-temperature moist heat is discharged) so that a temperature deviation of supplied air entering the drying chamber is minimized in all seasons compared to the room temperature, and thus it is possible to not only recover water heat for reuse, but also improve energy-saving performance greatly by minimizing fuel consumption. Furthermore, the present invention maximizes the drying efficiency of agricultural and fishery products by minimizing the temperature deviation of the incoming outside air (cold air) through heat exchange, leading to enhanced product quality, productivity, and cost-effectiveness.

Description

High-efficiency heat exchanger for drying equipment for agricultural and fishery products by using automatic temperature and humidity control method and negative pressure interlocking system

The present invention is an invention using Patent Registration No. 10-2341485, so that the outside air (cold air) flowing into the drying chamber by the negative pressure action is preheated in advance through the bundle tube of the heat exchange chamber (arranged on the tube through which the high temperature and moist heat is exhausted). The temperature of the supply air entering the drying room in all seasons is minimized compared to the indoor temperature, which allows the waste heat to be recovered and reused. It relates to a high-efficiency heat exchanger for drying equipment for agricultural and marine products using a negative pressure interlocking automatic temperature and humidity control system.

Accordingly, the present invention allows to maximize the drying efficiency of agricultural and marine products by minimizing the temperature deviation of the outside air (cold air) introduced through heat exchange, as well as significantly improving the quality of the dried agricultural and marine products, and in particular, greatly improving productivity and economic efficiency. characterized by being

In general, agricultural and marine products such as red pepper, radish, dried vegetables, shiitake mushroom, ginseng, etc. or aquatic products such as Hwangtae, Korean ragweed, eel, and flounder are for long-term storage or are dried and processed according to the specific purpose of food materials to be commercialized.

Drying methods for such agricultural and marine products are largely divided into natural drying methods and artificial drying methods.

Accordingly, the natural drying method uses sunlight and wind as it is, so it takes a very long time and requires a large space, and there is a problem that the quality of the product is deteriorated because dust or various foreign substances are attached during the drying process.

In addition, in the natural drying method, drying is impossible on rainy or humid days, and since the producers have to turn over the agricultural and marine products that are often dried to dry them, the work is cumbersome as well as inconvenient and the productivity is greatly reduced.

Accordingly, recently, a drying device capable of artificially forcibly drying agricultural and marine products has been developed and used.

Such a conventional drying apparatus has a drying chamber sealed inside, but a high-temperature heat source is formed inside the drying chamber to generate a hot wind. formed to be

That is, in the conventional drying apparatus, an electric heater that generates heat according to the supply of electricity is mainly used as a heat source.

These electric heaters are widely adopted in view of various advantages such as convenience in use because only electricity is supplied, fuel replenishment is unnecessary, and cleanliness of the surroundings can be maintained.

However, the heat of the unidirectional convection type or one-way irradiation type (the direction of the hot air is uniformly directed to one place) structure (the same is true of the existing hot air structure) is the space that is first reached inside the drying room and the inlet and distance of the hot air behind it There is a problem that the internal temperature of the drying chamber is not uniform because the temperature difference with the space on the far side is large.

As a result, even if drying is performed in the same drying room, the drying state of the object to be dried may be different depending on the drying location.

As a result, the conventional drying apparatus has insufficient measures to maintain an even temperature, and energy consumption is further increased by increasing the temperature against this, which causes a problem in that the drying efficiency is lowered.

In addition, the conventional agricultural and fishery product dryer has to discharge the heated, high-temperature and humid air as it is, and reheat the introduced new air, resulting in a problem in that the drying efficiency is lowered and power consumption is very severe.

1. Korean Patent Publication No. 10-1452161 (Registered on October 11, 2014)

The present invention is to solve the above problems, and the technical gist of the present invention is that external air (cold air) flowing into the drying chamber by the negative pressure action is preheated in advance through the bundle pipe (arranged on the pipe in which the high temperature and moist heat is exhausted) of the heat exchange chamber. An object of the present invention is to provide that the temperature of the supply air entering the drying room in all seasons is minimized compared to the indoor temperature by doing so.

It is an object of the present invention to provide that waste heat can be recovered and reused as well as minimized fuel consumption in all seasons and greatly improved energy saving performance.

Accordingly, the present invention allows to maximize the drying efficiency of agricultural and marine products by minimizing the temperature deviation of the outside air (cold air) introduced through heat exchange, as well as significantly improving the quality of the dried agricultural and marine products, and in particular, greatly improving productivity and economic efficiency. Its purpose is to provide

In order to achieve this object, the present invention comprises a drying chamber 100, a burner 200, a hot air chamber 300 for heating, a forced air flow mixing device 400, and a moisture removal exhaust line 500 to dry a series of agricultural and marine products. The device is provided on the rooftop of the drying room 100 and when a negative pressure is formed in the drying room 100, the damper panel 621 of the outdoor air supply box 620 is forcibly opened and closed while the outside air (cold air) is introduced into the inlet tube ( 622) and the supply tube 623 are formed to flow into the drying chamber 100, and a supply tube diameter 626 is formed at the end of the inlet tube 622 of the outside air supply box 620, but the supply tube diameter 626 ) is formed to correspond to the opening hole 811 of the heat insulation box, so that the outdoor air (cold air) introduced from the outside passes in the vertical and vertical orthogonal directions with respect to the bundle tube 730 of the heat exchange chamber to exchange heat, while the rooftop of the drying room 100 a negative pressure induction supply/exhaust port 600 for supplying preheated outside air to the inside of the drying chamber through the supply tube 623 in the drying chamber after passing through the opening window 190 formed on the surface; It is arranged between the inlet tube 622 and the supply tube 623 of the negative pressure induction supply and exhaust port, but on one side, the exhaust port 711: When the heat heated in the drying chamber by the burner dries the agricultural products and then moist heat is generated, the blowing fan The inlet box 710 is formed so that the wet exhaust duct is exhausted through the outlet of the inlet box) is partitioned, and the outlet box 720 is formed with a communication hole 721 (corresponding to the extension duct connected to the roof fan) on the other side. ) is formed to be partitioned, and a plurality of pipe-type bundle pipes 730 are formed to communicate between the inlet box 710 and the outlet box 720 so that the high temperature and moist heat discharged from the inside of the drying chamber 100 is in the inlet box 710 . and a heat exchange chamber 700 for passing through the bundle tube 730 and then the outlet box 720 from the start; A casing 810 with an open lower portion is provided to surround the heat exchange chamber 700 from the outside, and an open hole 811 is formed at the upper end of the casing 810 to form a lower supply pipe diameter of the external air supply box 620 . It is formed to be coupled to the 626, and an exhaust through hole 812 is formed at one end of the casing 810, and the branch pipe 540 and the high-speed roof fan 610 branched through the communication port 721 of the heat exchange chamber. Insulation box 800 to provide a connection passage when the connected extension pipe 520 is connected to each other; made up of

Accordingly, the inlet box 710 of the heat exchange chamber 700 is further provided with a funnel-shaped diffusion hole 750 so that the moist heat entering through the outlet 711 is dispersed throughout the inlet end of the bundle tube 730 . do.

In addition, an airflow delay plate 900 is inserted between the bundle tubes 730 of the heat exchange chamber 700 in the vertical direction to form a structure for delaying the residence time of the gas or a delay section when external air (cold air) is supplied. It is desirable to enhance the heat exchange performance.

On the other hand, the agricultural and fishery product drying apparatus according to the present invention has a hot air diffusion floor layer 110 in the center of a booth (Booth: drying window) having a predetermined area such that a passage 120 for agricultural and marine products for drying is formed, but the carrying passage a drying chamber 100 in which a heat source providing space 130 is formed on one side of 120 and a convection circulation type induction space 140 is provided on the other side of the carry-in/out passage 120; a burner 200 for supplying hot air to the drying chamber using gas (LNG or LPG) as a heat source (supply source); When the hot air generated from the burner 200 flows in through the main wind duct 310, it passes through the divided lower layer of the primary heat collecting box 320 and then causes the bundled return pipe 330 to the secondary collecting box 340. A bundle type return pipe 350 is formed on the upper side of the secondary heat collecting box 340, passing through the divided upper layer of the primary heat collecting box 320, and then passing through the elbow-type hot air supply pipe 360 to the drying room. a hot air chamber 300 for heating so that the hot air is transmitted to the hot air diffusion follower layer 110 of the second floor; A plurality of circulation driving fans 410 are continuously provided in a line in a row on one side of the hot air diffusion follower layer 110, and an open wind guide window 420 is formed on one side of the hot air diffusion follower layer 110. a forced air flow mixing device 400 for circulating and spreading the hot air airflows upwardly transferred through the hot air supply pipe 360 while circulating in the entire drying room from the second floor to the first floor in a clockwise direction; A rising pipe 510 is installed on one side of the heat source providing space 130 of the drying room so that the moist heat generated in the drying room is exhausted over the rooftop of the drying room 100, but the rising pipe 510 vertically penetrating the inside and outside of the drying room 100 ) to the outer end (roof side end) side, the extension pipe 520 is coupled to the high-speed roof fan 610 for forced exhaust and a moisture removal exhaust line 500 to be connected; The extension pipe 520 of the moisture removal exhaust line communicates with the high-speed roof fan 610 so that the exhaust line is connected, and the high-speed roof fan 610 operates in the drying room 100 according to a set control value (temperature, humidity sensing). It is formed to forcibly exhaust internal moisture heat to the outside, and when the moisture is removed, a negative pressure is formed in the drying chamber 100 so that the damper panel 621 of the external air supply box 620 is forcibly opened and closed by interlocking the external air into the drying chamber 100 ) A negative pressure induction supply/exhaust port 600 that automatically flows into the; made up of

Accordingly, in the outdoor air supply box 620, an inlet tube 622 for introducing outdoor air is formed on the outside of the rooftop, and a supply tube 623 for supplying outdoor air is formed on the inside of the drying chamber, but the inflow A damper panel 621 that rotates through one hinge 624 is coupled to the opening of the barrel 622 so that when a negative pressure is generated in the drying chamber 100 according to the operation of the high-speed roof fan 610, the pressure difference causes the damper panel 621 ) is opened with respect to the hinge 624 and is formed so that outside air flows into the drying chamber 100 .

In addition, the outdoor air supply box 620 has a drain hose 625 formed on one side so that when dew condensation occurs due to a temperature difference, it can be quickly drained to the outside of the drying chamber 100 .

As described above, the present invention allows the external air (cold air) flowing into the drying room by the negative pressure action to be pre-heated through the bundle pipe of the heat exchange chamber (arranged on the pipe in which the high temperature and moist heat is exhausted), so that the temperature of the supply air entering the drying room for all seasons is lowered. It has the effect of minimizing the deviation compared to the room temperature.

The present invention has the effect of recovering wasted waste heat and allowing it to be reused, as well as minimizing fuel consumption in all seasons and greatly improving energy saving performance.

Accordingly, the present invention enables to maximize the drying efficiency of agricultural and marine products by minimizing the temperature deviation of the outside air (cold air) flowing into the drying room through heat exchange, and thereby, the quality of the dried agricultural and marine products is remarkably improved, and in particular, productivity and economic feasibility. There is a significant improvement effect.

1 is an exemplary view of an agricultural and marine product drying apparatus using an automatic temperature and humidity control method equipped with a high-efficiency heat exchanger according to the present invention and a negative pressure interlocking system;
2 is a cross-sectional view of one side of a high-efficiency heat exchanger according to the present invention;
3 is a cross-sectional view taken along line AA of FIG. 2;
4 is an exemplary view showing a heat exchange chamber of a high-efficiency heat exchanger according to the present invention;
5 is an exemplary view showing an airflow delay plate as an optional embodiment of the present invention;
Figure 6 is a side cross-sectional view of Figure 1,
7 is an exemplary view showing a hot air chamber for heating according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

First, as shown in FIGS. 1 to 7, the present invention is a drying chamber 100, a burner 200, a hot air chamber 300 for heating, a forced air flow mixing device 400, a moisture removal exhaust line 500 and The negative pressure induction supply and exhaust port 600 is configured to form a series of agricultural and marine products drying apparatus.

At this time, the negative pressure induction supply and exhaust port 600 is provided on the roof top of the drying room 100, and when a negative pressure is formed in the drying room 100, the damper panel 621 of the outdoor air supply box 620 is forcibly opened and closed while interlocking the outside air ( Cold air) is formed to be introduced into the drying chamber 100 through the inlet tube 622 and the supply tube 623 .

Accordingly, a supply pipe diameter 626 is formed at the distal end of the inlet tube 622 of the external air supply box 620 .

At this time, the supply pipe diameter 626 is formed to correspond to the opening hole 811 of the heat insulation box, so that the outside air (cold air) introduced from the outside passes in the vertical and vertical orthogonal directions with respect to the bundle pipe 730 of the heat exchange chamber to exchange heat. is formed

Accordingly, the outside air (cold air) passes through the opening 190 formed on the roof surface of the drying room 100 and then the preheated outside air is supplied to the inside of the drying room through the supply tube 623 in the drying room.

In more detail, the high-speed roof fan 610 is formed to forcibly exhaust moist heat to the outside of the drying room through the standing pipe 510 mounted in the drying room 100 according to a set control value (temperature, humidity sensing). .(The principle is to draw in the air inside the drying room from the outside so that a negative pressure lower than atmospheric pressure is formed inside the drying room)

At this time, the wet heat discharged to the outside of the drying room through the riser pipe flows into the inlet box of the heat exchange chamber, and goes out through the bundle pipe to the outlet box. (Structure that provides a light path for heat exchange)

After that, a communication hole is formed in the outlet box, and when the branch pipe is connected, it is connected to the extension pipe and connected to the roof fan.

As such, when the moisture in the drying room is removed, since a negative pressure is formed in the drying room 100, when the set negative pressure is sensed, the damper panel 621 of the outside air supply box 620 is forcibly opened and closed in conjunction with the outside air in the drying room 100. It is formed to automatically flow into the inside.

At this time, in the outdoor air supply box 620, an inlet tube 622 for introducing outside air is formed on the outside of the rooftop, and a supply tube 623 for providing outdoor air is formed inside the drying chamber.

Accordingly, a damper panel 621 that rotates through one hinge 624 is coupled to the opening of the inlet 622 to generate a negative pressure in the drying chamber 100 according to the operation of the high-speed roof fan 610. The damper panel 621 is opened based on the hinge 624 and is formed so that outside air flows into the drying chamber 100 .

At this time, the heat exchange chamber 700 is formed to be disposed between the supply tube 622 and the supply tube 623 of the negative pressure induction supply and exhaust port.

Accordingly, at one side of the heat exchange chamber, an outlet (711: when the hot air heated in the drying chamber by the burner dries the agricultural products and then wet heat is generated, the wet exhaust duct is exhausted through the outlet of the inlet box through the blowing fan) is formed. The compartment 710 is formed to be partitioned.

At this time, the outlet box 720 in which the communication hole 721 (corresponding to the extension duct connected to the roof fan) is formed on the other side of the heat exchange chamber is formed to be partitioned.

Accordingly, a plurality of pipe-type bundle tubes 730 are formed to communicate between the inlet box 710 and the outlet box 720 , so that the high-temperature and moist heat discharged from the inside of the drying chamber 100 begins with the inlet box 710 and the bundle tube. After passing through the 730 is formed to pass through the exit box (720).

In addition, the heat insulation box 800 is formed to be provided with a casing 810 having an open lower portion so as to surround the heat exchange chamber 700 from the outside.

At this time, an opening 811 is formed in the upper end of the casing 810 and is formed to be coupled with the lower supply pipe diameter 626 of the external air supply box 620 .

Accordingly, an exhaust through hole 812 is formed at one end of the casing 810, and the branch pipe 540 branched through the communication port 721 of the heat exchange chamber and an extension pipe 520 communicating with the high-speed roof fan 610. It is formed to provide a connection passage when these are connected to each other.

At this time, the inlet box 710 of the heat exchange chamber 700 is formed to be further provided with a funnel-type diffusion hole 750 so that the moist heat entering through the outlet 711 is dispersed throughout the inlet end of the bundle tube 730 . do.

In addition, an airflow delay plate 900 is inserted between the bundle tubes 730 of the heat exchange chamber 700 in the vertical direction to form a structure for delaying the residence time of the gas or a delay section when external air (cold air) is supplied. It is desirable to enhance the heat exchange performance.

Accordingly, the airflow delay plate 900 has an inlet 920 and an outlet 930 formed on one side and the other side in the longitudinal direction of the panel-type tray, respectively, but on the surface 910 of the panel-type tray, a 'U'-shaped air The isolation block 940 has a series of flow paths and is formed to be disposed in plurality.

At this time, the air isolation block 940 is provided with an airflow retention groove 941 on one side where the opening is formed, so that when external air (cold air) is supplied from the outside to enter the drying chamber, the gas between the bundle tubes 730 in the heat exchange chamber is formed. It is formed to delay or delay the flow so that the heat exchange efficiency (convection of heat stays for a long time) is greatly improved. (Formed so that the outside air stays as long as possible)

Accordingly, the airflow retention groove 941 is formed in a bottle opener shape so that the turning or rotation of the outside air (cold air) supplied toward the drying chamber can occur smoothly, and the gas entering through the narrow opening 942 is sealed (or closed). It is formed so that the delay and delay time of the airflow can be secured as much as possible while rotating through the circular arc shape of the side hemisphere 943 (the two sides are symmetrical like a pair on the basis of the axis).

In addition, the above-described air isolation blocks are not arranged in line with the neighboring airfoil blocks, but are arranged to cross each other in a zigzag manner, so that when viewed from the top, the heat and the heat are partially spaced apart. ) is formed so that the gas flow is delayed as the air isolation blocks stacked in a zigzag are sequentially touched.

For reference, it is shown that the high-efficiency heat exchanger according to the present invention is provided in plurality in FIG. 1 including the negative pressure induction supply and exhaust port, but it is also possible that two or more, three or a plurality of them may be additionally installed.

On the other hand, the additional components below the drying room 100 are the same as the technical contents of Patent Registration No. 10-2341485, and have a hot air diffusion floor layer 110 in the center of a booth (Booth: drying window) having a certain area. It is formed to be provided with a carry-in/out passage 120 of the.

At this time, a heat source providing space 130 is formed on one side of the carry-in passage 120 , and a convection circulation type induction space 140 is provided on the other side of the carry-in passage 120 .

Accordingly, the burner 200 is formed to supply hot air to the drying chamber using gas (LNG or LPG) as a heat source (supply source).

At this time, when the hot air chamber 300 for heating flows in through the main wind duct 310, the hot air generated from the burner 200 passes through the divided lower layer of the primary heat collecting box 320 and then bundles the return pipe 330 ) is formed to be transferred to the secondary heat collecting box (340).

Accordingly, a bundle-type return pipe 350 is formed on the upper side of the secondary heat collecting box 340, passing through the divided upper layer of the primary heat collecting box 320, and then passing through the elbow-type hot air supply pipe 360 to the second floor of the drying room. It is formed so that the hot air is transmitted to the hot air diffusion follower layer 110 of the.

In addition, it is preferable that at least 1 to 3 sets of the burner and the hot air chamber for heating form one set based on one drying room.

Accordingly, the forced air flow mixing device 400 is formed such that a plurality of circulation driving fans 410 are continuously provided in a row on one side of the hot air diffusion follower layer 110 .

At this time, an open wind guiding window 420 is formed on one side of the hot air diffusion follower layer 110 , and the hot air airflows transferred upward through the hot air supply pipe 360 rotate the entire drying room in a clockwise direction from the second floor to the first floor. It is formed so as to circulate and diffuse.

Accordingly, the moisture removal exhaust line 500 is formed such that a riser pipe 510 is installed on one side of the heat source providing space 130 of the drying room, so that the wet heat generated in the drying room is exhausted over the rooftop of the drying room 100 .

At this time, an extension pipe 520 is coupled to the outer end (rooftop side end) side of the rising pipe 510 vertically penetrating the inside and outside of the drying chamber 100 so as to be connected to the high-speed roof fan 610 for forced exhaust.

As described above, the present invention ensures that the temperature and humidity of the drying room for agricultural and fishery products are accurately maintained, controlled, set or adjusted, while the moist heat generated in the drying room is quickly exhausted to the outside during the drying process, and at the same time, the cold air outside is directed to the negative pressure environment of the drying room. This allows to minimize heat loss during drying, but to ensure that the drying environment in the drying room is always maintained in the best condition to ensure efficient drying operation and high energy efficiency and power loss It is characterized by a significant improvement in economic efficiency.

Accordingly, the present invention enables the uniform diffusion of hot air, removal of moisture, and supply of cold air from outside air to be automatically controlled or semi-automatically controlled by a selective manual control device for the agricultural and marine products to be dried, so that intelligent precision control is possible without wasting energy. There is a characteristic.

In addition, the present invention allows cold air to be automatically introduced into the drying room through a negative pressure phenomenon without additional facilities such as a separate outdoor air inlet device, which can fundamentally exclude (omit) the installation of additional power structures (facilities). It has the characteristic of reducing production cost and reducing scale.

In addition, the present invention uses natural gas (LNG) energy as a heat source for hot air, which has no odor during drying and is hygienic.

In addition, according to the present invention, a circulation driving fan supplied with hot air in the drying room is installed in a two-layer structure to circulate the circulation of the hot air in the form of a swirling cycle (vortex) airflow, which is an even and uniform heat transfer over the entire drying room area. It is formed so that it has excellent drying quality and high energy efficiency.

The present invention is not limited to the specific preferred embodiments described above, and without departing from the gist of the present invention as claimed in the claims, anyone with ordinary skill in the art to which the invention pertains can implement various modifications Of course, such modifications are intended to be within the scope of the claims.

100 ... drying room 110 ... hot air diffusion floor
120 ... entry/exit passage 130 ... space for providing heat source
140 ... convection circulation type induction space 190 ... open window
200 ... burners
300 ... hot air chamber for heating 310 ... main wind pipe
320 ... primary collection box 330 ... conduit
340 ... secondary collection box 350 ... evacuation tube
360 ... hot air supply pipe
400 ... forced air flow mixing device 410 ... circulating fan
420 ... wind window 500 ... moisture removal exhaust line
510 ... standing tube 520 ... extension tube
600 ... negative pressure induction air supply and exhaust 610 ... high-speed roof fan
620 ... external air supply box 621 ... damper panel
622 ... inlet canister 623 ... feed canister
624 ... hinge 626 ... supply pipe diameter
700 ... heat exchange chamber 710 ... inlet box
711 ... outlet 720 ... outlet box
721 ... Yeontong-gu 730 ... Bundle Hall
750 ... diffuser 800 ... insulation box
810 ... casing 811 ... opening
812 ,,, Exhaust hole 900 ... Airflow retardation plate

Claims (3)

A drying room 100, a burner 200, a hot air chamber 300 for heating, a forced air flow mixing device 400, and a moisture removal exhaust line 500 are configured to form a series of agricultural and marine product drying devices, but the drying room 100 When a negative pressure is formed in the drying room 100 provided on the rooftop, the damper panel 621 of the outdoor air supply box 620 is forcibly opened and closed in conjunction with the outside air through the inlet tube 622 and the supply tube 623 to the drying chamber ( 100) is formed to flow into the inside, and a supply pipe diameter 626 is formed at the end of the inlet tube 622 of the external air supply box 620, but the supply pipe diameter 626 corresponds to the opening hole 811 of the heat insulation box. After passing through the opening window 190 formed on the roof surface of the drying chamber 100, the outdoor air (cold air) introduced from the outdoors passes in vertical and vertical orthogonal directions with respect to the bundle tube 730 of the heat exchange chamber to exchange heat. a negative pressure induction supply/exhaust port 600 for supplying preheated outside air to the inside of the drying chamber through the supply tube 623 in the drying chamber; It is disposed between the inlet tube 622 and the supply tube 623 of the negative pressure induction supply and exhaust port, and an inlet box 710 having an outlet 711 is formed on one side to be partitioned, and a communication port 721 is formed on the other side to be partitioned. The formed outlet box 720 is formed to be partitioned, and a plurality of pipe-type bundle pipes 730 are formed to communicate between the inlet box 710 and the outlet box 720 so that the high temperature and moist heat discharged from the inside of the drying chamber 100 is removed. The inlet box 710 and the heat exchange chamber 700 to pass through the bundle tube 730 and then the outlet box 720 and; A casing 810 with an open lower portion is provided to surround the heat exchange chamber 700 from the outside, and an open hole 811 is formed at the upper end of the casing 810, so that the lower supply pipe diameter of the external air supply box 620 is provided. It is formed to be coupled to the 626, and an exhaust through hole 812 is formed at one end of the casing 810, and the branch pipe 540 and the high-speed roof fan 610 branched through the communication port 721 of the heat exchange chamber. Insulation box 800 for providing a connection passage when the connected extension pipe 520 is connected to each other; In the high-efficiency heat exchanger for agricultural and marine products drying equipment using a negative pressure interlocking automatic temperature and humidity control system,
An air flow delay plate 900 is inserted between the bundle tubes 730 of the heat exchange chamber 700 along the vertical direction to form a structure for delaying the residence time of the gas or a lag section when external air is supplied, but the air flow delay is delayed. The plate 900 has an inlet 920 and an outlet 930 formed on one side and the other side in the longitudinal direction of the panel-type tray, respectively, and a 'U'-shaped air isolation block 940 is serially formed on the flat surface 910 of the panel-type tray. In the air isolation block 940, an airflow retention groove 941 is formed on one side where the opening is formed. ) is formed to delay or delay the flow of gas between A high-efficiency heat exchanger for agricultural and marine products drying equipment using a negative pressure interlocking automatic temperature and humidity control system, characterized in that the gas entering through the closed side rotates through the circular arc shape of the hemispherical portion 943.
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