Split type granary multi-cycle air conditioning device

Abstract

The utility model discloses a split type granary multi-circulation air conditioning device, which belongs to the technical field of granary air conditioning equipment, and comprises an air treatment shell, a filtering mechanism, a heat exchanger, an electric heater and a humidifier are sequentially arranged in the shell along the airflow direction, an airflow inlet side is connected with an air return pipeline, an airflow outlet side is connected with an air supply pipeline, and the two pipelines are connected with an interface shell in a granary. An adjustable fresh air opening is formed in the upstream of the filtering mechanism, and an auxiliary heater is arranged in the in-bin connector shell. Through a closed-loop multi-stage temperature control chain for filtering, heat exchange, heating, humidifying and forced air supply and a double-shell collaborative shunt design, efficient circulation of global airflow of the granary is realized, a low-temperature environment of less than or equal to 15 DEG C is continuously and stably maintained, the respiration intensity and microbial activity of grains are reduced, and quality deterioration is delayed. The auxiliary heater can preheat low-temperature return air, power consumption of the electric heater can be greatly reduced, and the split type structure is convenient to overhaul and suitable for irregular granaries.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of granary air conditioning equipment, especially relates to split type granary multi-cycle air conditioning device. BACKGROUND

[0002] The safe storage of grain is highly dependent on the control of environmental temperature and humidity.

[0003] Sustained and stable control of the temperature of the grain pile in the low-temperature range below 15 DEG C can effectively inhibit the respiration intensity of the grain, significantly reduce the activity of microorganisms such as mold and insect pests, thereby delaying the quality deterioration process such as the increase in fatty acid value and the decrease in germination rate, and is the key to ensuring the safety of stored grain and prolonging the shelf life.

[0004] The split type granary has application value in the dispersed storage of grain due to its characteristics of being detachable, easy to transport, and convenient for local maintenance. However, the existing air conditioning device mainly adopts one-way air supply, which leads to uneven distribution of cold energy and the existence of temperature dead angles in the granary. In particular, when the external temperature fluctuates, the device is difficult to continuously and reliably suppress the overall temperature of the granary to below 15 DEG C, the critical point. Temperature exceeding the standard will directly accelerate the aging of the grain, and there is a problem of insufficient low-temperature maintenance capacity. Moreover, in cold seasons or low-temperature areas, the return air temperature is too low, and the existing device mainly relies on direct electric heating to increase the air temperature, which has low energy utilization efficiency and high operating cost, and it is difficult to achieve efficient dynamic balance of cold and heat loads. SUMMARY

[0005] The utility model aims at the above-mentioned problems existing in prior art, and provides a split type granary multi-cycle air conditioning device.

[0006] The utility model discloses a split type granary multi-cycle air conditioning device, including air treatment casing, the filter mechanism is fixedly installed in the air flow entrance side in the air treatment casing, the heat exchanger is fixedly installed in the air treatment casing and is located the downstream of filter mechanism, the electric heater is fixedly installed in the middle part of air treatment casing, the humidifier is fixedly installed in the air flow export side in the air treatment casing, the air flow entrance side of air treatment casing is connected with return air duct, and the air flow export side is connected with air supply duct, and the return air duct and air supply duct are connected to one in -granary interface casing, and the adjustable fresh air opening is established on the air treatment casing of filter mechanism upstream.

[0007] As preferred, the air treatment casing is fixedly connected with a fan at the air flow export side, and the fan is located downstream of the humidifier.

[0008] As preferred, the in -granary interface casing is provided with a return air inlet communicated with the return air duct on the left side, and an air supply inlet communicated with the air supply duct on the right side.

[0009] As preferred, an auxiliary heater is arranged in the in-bin interface shell, and the auxiliary heater is located in the area between the return air inlet and the air supply inlet.

[0010] As preferred, the filter mechanism comprises a detachable filter screen, the filter screen is arranged at the air flow inlet end in the air treatment shell, and a sealing top plate is fixedly connected to the top of the filter screen and tightly adheres to the inner wall of the top of the air treatment shell.

[0011] As preferred, the bottom of the filter screen is limited by a bottom positioning block fixed to the bottom of the air treatment shell, a limiting groove is arranged on the sealing top plate, a top limiting plate is fixedly connected to the top of the air treatment shell and is inserted into the limiting groove, and a pull handle is fixedly connected to the surface of the sealing top plate.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The closed loop multi-stage temperature control chain and the double-shell cooperative shunt design of filtering, heat exchange, heating, humidification and forced air supply realize efficient circulation of air in the whole grain bin, can maintain the temperature in a low temperature environment of ≤15℃, and fundamentally solve the quality deterioration problem of grain and food, and effectively delay the quality aging speed.

[0014] 2. The auxiliary heater is innovatively arranged in the area between the return air inlet and the air supply inlet, can directly preheat the low temperature cold air sucked by the grain bin, greatly increases the return air temperature entering the air treatment shell by more than 10℃, and reduces the power consumption of the electric heater.

[0015] 3. The air treatment shell and the in-bin interface shell are connected through a pipeline, main parts can be maintained without entering the grain bin, the air supply inlet and the return air inlet where dust is easy to accumulate are independently concentrated in the in-bin interface shell, are physically isolated from the precision equipment, the filter mechanism improves the anti-blocking performance, the return air pipeline and the air supply pipeline can be extended and arranged, and are suitable for various irregular grain bins. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model.

[0017] Figure 2 It is a whole structure sectional view of the utility model.

[0018] Figure 3 It is a circulating air supply mechanism schematic view of the utility model.

[0019] Figure 4 It is a part structure schematic view of the circulating air supply mechanism of the utility model.

[0020] Figure 5It is the filtering mechanism schematic view of the utility model.

[0021] In the figure, 1, air treatment casing; 21, heat exchanger; 22, humidifier; 23, electric heater; 24, fan; 25, return air duct; 26, return air inlet; 27, auxiliary heater; 28, air outlet; 29, air supply duct; 3, filtering mechanism; 31, sealing top plate; 32, top limiting plate; 33, pull handle; 34, filter screen; 35, bottom positioning block; 4, in-store interface casing; 5, adjustable fresh air inlet. DETAILED DESCRIPTION

[0022] The following is the specific embodiment of the utility model and in combination with the drawings, the technical scheme of the utility model is further described, but the utility model is not limited to these embodiments.

[0023] As Figures 1-4 Indicated, the embodiment provides split type granary multi-cycle air conditioning device, including air treatment casing 1, air treatment casing 1 in along the airflow direction is sequentially provided with filtering mechanism 3, heat exchanger 21, electric heater 23 and humidifier 22, filtering mechanism 3 is fixedly installed in the airflow inlet side in air treatment casing 1, heat exchanger 21 is fixedly installed in air treatment casing 1 and is located downstream filtering mechanism 3, electric heater 23 is fixedly installed in the middle part in air treatment casing 1, humidifier 22 is fixedly installed in the airflow outlet side in air treatment casing 1, the airflow inlet side of air treatment casing 1 is communicated with return air duct 25, and the airflow outlet side is communicated with air supply duct 29, and return air duct 25 and air supply duct 29 are jointly connected to a in-store interface casing 4, and the air treatment casing 1 of filtering mechanism 3 upstream is equipped with adjustable fresh air inlet 5.

[0024] Further, the airflow outlet side in air treatment casing 1 is fixedly connected with fan 24, and the fan 24 is located downstream humidifier 22.

[0025] Further, the left side of in-store interface casing 4 is equipped with return air inlet 26 communicated with return air duct 25, and the right side is equipped with air outlet 28 communicated with air supply duct 29.

[0026] Further, the in-store interface casing 4 is equipped with auxiliary heater 27, and the auxiliary heater 27 is located between the region of return air inlet 26 and air outlet 28.

[0027] The working principle of the split type granary multi-cycle air conditioning device is as follows:

[0028] The indoor return air is driven by the fan 24 to enter the return air duct 25 through the return air inlet 26 of the warehouse interface shell 4, and flows to the air flow inlet side of the air treatment shell 1. The return air passes through the filter mechanism 3, the heat exchanger 21, the electric heater 23 and the humidifier 22 in turn, wherein the filter mechanism 3 is used to intercept dust, grain crumbs and insect pests and the like impurities to avoid pollution of the subsequent core components, the heat exchanger 21 exchanges heat with the cold source to realize cooling / heating (summer refrigeration: cooling the air to ≤15℃; winter heating can be switched), the electric heater 23 accurately compensates the heat as needed (such as reheating after dehumidification), and the humidifier 22 supplements the humidity as needed to maintain the moisture balance of the grain pile. The treated air is pressurized by the fan 24 and delivered to the warehouse interface shell 4 through the air supply duct 29, and finally uniformly enters the warehouse through the air supply inlet 28, realizing a closed loop circulation: the air flow path is warehouse→return air inlet 26→return air duct 25→air treatment shell 1→air supply duct 29→air supply inlet 28→warehouse, forming a continuous circulation.

[0029] The adjustable fresh air inlet 5 can be equipped with an electronic valve or a control mechanism to control the opening and closing of the introduced external fresh air and the amount of fresh air. The warehouse return air is mixed with the fresh air introduced by the adjustable fresh air inlet 5 through the return air inlet 26, the return air duct 25, and the fan 24 into the air supply duct 29, and then into the warehouse through the air supply inlet 28.

[0030] When the return air temperature is too low, the auxiliary heater 27 directly preheats the cold air entering the warehouse interface shell 4, reducing the load of the electric heater 23, and having the advantage of cold working condition auxiliary preheating.

[0031] Through the closed loop multi-stage temperature control chain of filtering→heat exchange→heating→humidification→forced air supply and the cooperative shunting of the double shells (air treatment shell 1+warehouse interface shell 4), the whole air flow of the warehouse is efficiently circulated, the temperature fluctuation is efficiently controlled, and a ≤15℃ low-temperature environment is continuously and stably maintained. Compared with the prior art, the grain respiration intensity is reduced by more than 40%, the microbial activity inhibition rate is more than 60%, and the fatty acid value rise speed is delayed by 50%, which fundamentally solves the problem of grain quality deterioration and delays the quality aging speed.

[0032] The auxiliary heater 27 is innovatively arranged in the area between the return air inlet 26 and the air supply inlet 28, directly preheats the low-temperature cold air sucked by the warehouse, and greatly increases the return air temperature entering the air treatment shell 1 by more than 10℃. According to actual measurement, this design reduces the power consumption of the electric heater 23 by 35%-40%, and the annual operating cost can be greatly reduced in the northern cold regions.

[0033] The air treatment shell 1 containing the core temperature control component is connected with the warehouse interface shell 4 containing the air outlet and the auxiliary heater 27 through a pipeline, main components can be repaired without entering the warehouse, and the dust-easy-to-accumulate air supply outlet 28 and the return air outlet 26 are independently concentrated in the warehouse interface shell 4, and the physical isolation design of the precise equipment improves the anti-blocking performance, and the return air pipeline 25 and the air supply pipeline 29 can be arranged in an extended manner, and are suitable for various irregular warehouses.

[0034] As shown in the drawings, Figure 5 On the basis of the above, the filter mechanism 3 further comprises a detachable filter screen 34, the filter screen 34 is arranged at the air inlet end in the air treatment shell 1, the top of the filter screen 34 is fixedly connected with a sealing top plate 31, and the sealing top plate 31 is tightly attached to the inner wall at the top of the air treatment shell 1.

[0035] Further, the bottom of the filter screen 34 is limited by a bottom positioning block 35 fixed to the bottom in the air treatment shell 1, a limiting groove is formed in the sealing top plate 31, a top limiting plate 32 is fixedly connected to the top of the air treatment shell 1 and is inserted into the limiting groove, and a pull handle 33 is fixedly connected to the surface of the sealing top plate 31.

[0036] The filtering process is as follows: the return air of the warehouse carrying dust (such as grain chaff and insect bodies) enters the air inlet end of the air treatment shell 1 and vertically penetrates through the filter screen 34, the filter screen 34 in the embodiment adopts a multi-layer composite filter material with a G4 primary efficiency + F6 / F7 / F8 intermediate efficiency composite structure, and the particle size of the intercepted particles is greater than 5 microns, and the clean air flows to the downstream heat exchanger 21.

[0037] The sealing and limiting mechanism is as follows: the sealing top plate 31 is pressed by a silica gel strip (not shown in the drawing) on the inner wall at the top of the air treatment shell 1, so as to prevent the unfiltered air from short-circuiting, the bottom of the filter screen 34 is embedded in the dovetail groove of the bottom positioning block 35, so as to limit the horizontal displacement, and the top limiting plate 32 is inserted into the limiting groove of the sealing top plate 31, so as to form a mechanical interlocking in the vertical direction and resist the air flow impact force of more than 200 Pa.

[0038] When the filter screen needs to be replaced, the pull handle 33 is vertically lifted, the top limiting plate 32 is separated from the limiting groove, and the filter screen 34 is horizontally pulled out, without the need for tools throughout the process and with a time consumption of less than 3 minutes.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A split-type multi-circulation air conditioning unit for grain silos, comprising an air handling housing (1), characterized in that, The air handling housing (1) is provided with a filter mechanism (3), a heat exchanger (21), an electric heater (23), and a humidifier (22) arranged sequentially along the airflow direction. The filter mechanism (3) is fixedly installed on the airflow inlet side of the air handling housing (1). The heat exchanger (21) is fixedly installed in the air handling housing (1) and located downstream of the filter mechanism (3). The electric heater (23) is fixedly installed in the middle of the air handling housing (1). The humidifier (22) is fixedly installed on the airflow outlet side of the air handling housing (1). The airflow inlet side of the air handling housing (1) is connected to a return air duct (25), and the airflow outlet side is connected to a supply air duct (29). The return air duct (25) and the supply air duct (29) are connected to an interface housing (4) in a compartment. An adjustable fresh air inlet (5) is provided on the air handling housing (1) upstream of the filter mechanism (3).

2. The split-type multi-circulation air conditioning unit for grain silos according to claim 1, characterized in that, A fan (24) is fixedly connected to the air outlet side inside the air handling housing (1), and the fan (24) is located downstream of the humidifier (22).

3. The split-type multi-circulation air conditioning unit for grain silos according to claim 1 or 2, characterized in that, The inner interface housing (4) has a return air inlet (26) on the left side that is connected to the return air duct (25) and an air supply inlet (28) on the right side that is connected to the air supply duct (29).

4. The split-type multi-circulation air conditioning device for grain silos according to claim 3, characterized in that, An auxiliary heater (27) is provided inside the internal interface housing (4) of the chamber, and the auxiliary heater (27) is located in the area between the return air inlet (26) and the supply air inlet (28).

5. The split-type multi-circulation air conditioning device for grain silos according to claim 1, characterized in that, The filtration mechanism (3) includes a detachable filter screen (34), which is disposed at the airflow inlet end inside the air handling housing (1). A sealing top plate (31) is fixedly connected to the top of the filter screen (34), and the sealing top plate (31) is tightly fitted to the inner wall of the top of the air handling housing (1).

6. The split-type multi-circulation air conditioning device for grain silos according to claim 5, characterized in that, The bottom of the filter screen (34) is limited by a bottom positioning block (35), which is fixed to the bottom of the air treatment housing (1). A limiting groove is provided on the sealing top plate (31). A top limiting plate (32) is fixedly connected to the top of the air treatment housing (1). The top limiting plate (32) is inserted into the limiting groove. A pull handle (33) is fixedly connected to the surface of the sealing top plate (31).

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