Grain air conditioner

Abstract

This utility model discloses a grain air conditioner, relating to the field of grain storage temperature control technology. It includes a housing, with a dual-axial flow fan at one end and a condenser installed at the other end. A dual-inlet centrifugal fan is located at the other end, with an evaporator at the lower end of the fan. A compressor, a liquid storage tank, and a drying filter are arranged between the dual-axial flow fan and the condenser. An electrical control assembly is located on top of the compressor. Ventilation openings are provided at one end of both the dual-inlet centrifugal fan and the evaporator. This utility model, by using a dual-inlet centrifugal fan at one end of the housing, achieves better cooling effect and higher efficiency by allowing air to return from the bottom and supply air from the top. The airflow for heat exchange is more rational, and the air volume of the dual-axial flow fan is much greater than that of a conventional cooling fan, further enhancing heat dissipation and quickly removing heat from the condenser.

Description

Technical Field

[0001] This utility model relates to the field of grain storage temperature control technology, specifically a grain air conditioner. Background Technology

[0002] Grain air conditioners are intelligent temperature control devices specifically designed for grain storage environments. By precisely regulating temperature and humidity and optimizing air circulation, they ensure that grain maintains stable quality during storage. Grain air conditioners are widely used across all key links in the grain industry chain, playing a crucial role, especially in scenarios requiring precise temperature and humidity control.

[0003] Grain air conditioners lower the air temperature through a refrigeration system, and then deliver the treated low-temperature, low-humidity air into the grain silo through an air supply device. By utilizing the gaps between the grain piles to form a circulating airflow, the temperature inside the silo and the grain pile is maintained uniformly within a suitable range below 15°C, and the humidity is controlled within a range that inhibits the growth of microorganisms and the activity of pests. At the same time, in conjunction with the sealed structure of the grain silo, the intrusion of external heat and humidity is reduced. By continuously adjusting the air supply volume and temperature and humidity parameters, the respiration and aging rate of the grain are slowed down, thereby achieving long-term safe storage of grain, reducing losses and maintaining quality.

[0004] However, existing grain air conditioners still have some problems. For example, most grain air conditioners use horizontal air supply and return, and the cold air supplied into the warehouse is easily sucked back into the equipment by the air conditioner return vents, resulting in poor heat exchange in the entire grain warehouse, especially in areas far from the air supply. In addition, the components in many grain air conditioners are scattered and the structure is not compact enough, making the unit wider and the center of gravity farther from the installation wall and heavier. Many grain warehouses are old-style grain warehouses with thin walls and a long history, which poses certain safety risks to installation, affects the working efficiency of the equipment, and also makes it more inconvenient for staff to maintain the equipment. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a grain air conditioner to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grain air conditioner, comprising a housing, a dual-axial flow fan at one end of the housing, a condenser at one end of the dual-axial flow fan, a dual-inlet centrifugal blower at the other end of the housing, an evaporator at the lower end of the dual-inlet centrifugal blower, a compressor, a liquid storage tank and a drying filter between the dual-axial flow fan and the condenser, and an electrical control component at the top of the compressor, with ventilation openings at one end of both the dual-inlet centrifugal blower and the evaporator.

[0007] By adopting the above technical solution, a dual-axial flow fan is installed at one end of the device casing. The dual-axial flow fan is arranged in front of and behind the condenser, directly drawing air into the condenser and exhausting it. Compared with conventional axial flow fans that exhaust air from the top, this is more direct, has higher heat exchange efficiency, and the airflow for heat exchange is more reasonable. Moreover, the air volume of the dual-axial flow fan is much larger than that of ordinary cooling fans, further improving the heat dissipation power. It can quickly remove heat from the condenser, especially in the high temperature and humidity of grain depots in summer, effectively avoiding the phenomenon of efficiency reduction of the refrigeration system due to insufficient heat dissipation. Through the setting of the blower and evaporator, a dual-inlet centrifugal blower can deliver cold air to the deep layers of the grain pile, avoiding local high temperature in the grain pile. Through the air duct guide design, the local condensation caused by cold air blowing directly on the grain pile is reduced, taking into account both cooling and moisture retention, and improving the quality of stored grain.

[0008] The present invention is further configured such that the compressor, liquid storage tank, and dryer filter are located on the same horizontal plane as the dual-inlet centrifugal blower, and the dual-inlet centrifugal blower is connected to the inner wall of the device housing.

[0009] Preferably, multiple sets of components are arranged close together, so that when the equipment is inspected, there is no need to disassemble adjacent components, and maintenance can be completed by a single person, shortening downtime. Secondly, it makes the unit narrower and the center of gravity closer to the installation wall, which effectively reduces the installation risk and reduces the phenomenon of wall cracking for thin and old grain silo walls, and also improves the working efficiency of the equipment.

[0010] The present invention is further configured such that the dual axial flow fan is installed in alignment with the condenser, and a protective cover is provided on the outer wall of the dual axial flow fan.

[0011] As a preferred option, it has a better cooling effect on the space, higher efficiency, and more reasonable airflow for heat exchange.

[0012] The present invention is further provided that a filter screen is provided at the end of the condenser away from the dual axial flow fan, and the filter screen is bolted to the device housing.

[0013] Preferably, by setting up a filter, dust clogging can be effectively reduced, thus lowering the cleaning frequency.

[0014] The present invention is further configured such that an expansion valve is provided at one end of the evaporator, and the expansion valve is connected to the inner wall of the device housing.

[0015] Preferably, the position of the expansion valve is effectively limited, which improves the stability of the expansion valve during operation.

[0016] The present invention is further provided that the inner walls of the condenser and the evaporator are provided with anti-corrosion coatings.

[0017] As a preferred option, it effectively extends the service life of the condenser and evaporator, and reduces equipment operating costs.

[0018] The present invention is further configured such that the inner wall of the device housing is provided with multiple sets of support frames, and the support frames are arranged symmetrically.

[0019] Preferably, limiting the positions of multiple components improves the overall stability of the equipment during operation and extends its service life.

[0020] The present invention is further configured such that one end of the condenser is provided with a connection port, and the connection port is located on one side of the device housing.

[0021] Preferably, the connection port is located on the side wall of the device housing, which facilitates connection with external drive equipment.

[0022] The present invention is further configured such that the connection port is a waste heat recovery interface, and the connection port can be connected to an external drive device.

[0023] As a preferred option, it is used in scenarios requiring heat, such as grain drying and hot water supply, thereby reducing energy waste.

[0024] In summary, the present invention has the following main advantages: 1. This utility model features a dual axial flow fan. The dual axial flow fan is installed at one end of the device housing and is positioned in front of and behind the condenser. It directly draws air into the condenser and discharges it. Compared with conventional axial flow fans that exhaust air from the top, this is more direct, has higher heat exchange efficiency, and provides a more rational airflow for heat exchange. Furthermore, the air volume of the dual axial flow fan is much greater than that of ordinary cooling fans, further enhancing the heat dissipation power. It can quickly remove heat from the condenser, especially in grain depots during the summer when temperatures are high and humidity is high, effectively preventing the efficiency reduction of the refrigeration system due to insufficient heat dissipation.

[0025] 2. This utility model, through the setting of a dual-inlet centrifugal blower and an evaporator, can deliver cold air to the deep layers of the grain pile, avoiding local high temperatures in the grain pile. Through the air duct guide design, it reduces local condensation caused by cold air blowing directly on the grain pile, thus taking into account both cooling and moisture retention, and improving the quality of stored grain. Attached Figure Description

[0026] Figure 1 This is a front view of the present invention; Figure 2 This is a side perspective view of the present invention; Figure 3 This is a three-dimensional top view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is a schematic diagram showing the position of the filter screen of this utility model.

[0027] Explanation of reference numerals in the attached figures: 1. Device housing; 2. Dual axial flow fan; 3. Electrical control components; 4. Compressor; 5. Liquid storage tank; 6. Dryer filter; 7. Condenser; 8. Connection port; 9. Dual air inlet centrifugal blower; 10. Evaporator; 11. Vent; 12. Expansion valve; 13. Filter screen. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] The embodiments of this utility model will be described below based on its overall structure.

[0030] First embodiment: Please see Figures 1-5 The device includes a housing 1, with a dual-axial flow fan 2 installed at one end of the housing 1, and a condenser 7 installed at one end of the dual-axial flow fan 2. A dual-inlet centrifugal blower 9 is installed at the other end of the housing 1, and an evaporator 10 is installed at the lower end of the dual-inlet centrifugal blower 9. A compressor 4, a liquid storage tank 5, and a dryer filter 6 are arranged between the dual-axial flow fan 2 and the condenser 7. An electrical control assembly 3 is installed on the top of the compressor 4. Ventilation ports 11 are provided at one end of both the dual-inlet centrifugal blower 9 and the evaporator 10. The dual-axial flow fan 2 is installed at one end of the housing, and is positioned in a front-to-back arrangement with the condenser 7 directly opposite it. The system directly draws air into the condenser 7 and discharges it, which is more direct and has higher heat exchange efficiency compared to conventional axial flow fans. The airflow for heat exchange is more reasonable, and the air volume of the dual axial flow fans 2 is much greater than that of ordinary cooling fans, further improving the heat dissipation power. It can quickly remove the heat from the condenser 7, especially in the high temperature and humidity of grain depots in summer. This effectively avoids the phenomenon of efficiency reduction of the refrigeration system due to insufficient heat dissipation. Through the setting of dual-inlet centrifugal fans 9 and evaporators 10, cold air can be delivered to the deep layers of the grain pile to avoid local high temperature in the grain pile. Through the air duct guide design, the system reduces local condensation caused by cold air blowing directly on the grain pile, taking into account both cooling and moisture retention, and improving the quality of stored grain.

[0031] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-4The compressor 4, liquid storage tank 5, and dryer filter 6 are located on the same horizontal plane as the dual-inlet centrifugal blower 9, and the dual-inlet centrifugal blower 9 is connected to the inner wall of the device housing 1. Multiple components are set up close to each other, so there is no need to disassemble adjacent components when the equipment is under maintenance. One person can complete the maintenance, shortening downtime. Secondly, it makes the unit narrower and the center of gravity closer to the installation wall. For thin and old grain silo walls, it effectively reduces the installation risk, reduces the phenomenon of wall cracking, and also improves the working efficiency of the equipment.

[0032] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 The dual axial flow fan 2 is installed in front of and behind the condenser 7, and the outer wall of the dual axial flow fan 2 is equipped with a protective cover, which has a better cooling effect on the space, higher efficiency, and more reasonable air flow for heat exchange.

[0033] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 A filter screen 13 is provided at the end of the condenser 7 away from the dual axial flow fan 2, and the filter screen 13 is bolted to the housing 1 of the device. The filter screen 13 effectively reduces dust blockage and reduces the cleaning frequency.

[0034] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-3 An expansion valve 12 is provided at one end of the evaporator 10, and the expansion valve 12 is connected to the inner wall of the device housing 1. The position of the expansion valve 12 is effectively limited, which improves the stability of the expansion valve 12 during operation.

[0035] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 The inner walls of condenser 7 and evaporator 10 are coated with anti-corrosion coating, which effectively extends the service life of condenser 7 and evaporator 10 and reduces equipment operating costs.

[0036] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 The inner wall of the device housing 1 is provided with multiple sets of support frames, which are symmetrically arranged to limit the movement of multiple components, thereby improving the overall stability of the equipment during operation and extending the service life of the equipment.

[0037] Second embodiment: Please see Figure 4 , Figure 5 The difference between Embodiment 2 and Embodiment 1 is that, while retaining the features of Embodiment 1, a connection port 8 is installed at one end of the condenser 7, and the connection port 8 is located on the side of the device housing 1, which effectively improves the energy recovery and reuse of the equipment.

[0038] A connection port 8 is installed at one end of the condenser 7 and is located on the side wall of the device housing 1. The connection port 8 is a waste heat recovery interface, which can transfer the heat of the refrigerant to a medium such as water or air through a heat exchange device to supply the heat demand scenario, such as grain drying and hot water supply, thereby reducing energy waste.

[0039] In practical operation, this utility model is as follows: The inner wall of the device housing 1 adopts a modular layout design with precise airflow control. The dual axial flow fans 2 and condenser 7 are arranged in opposite directions. The compressor 4, liquid storage tank 5 and dryer filter 6 are neatly embedded in the gap between them. While ensuring the compact integration of core components, the strong convection characteristics of the axial flow fans enhance the heat dissipation efficiency. Combined with the directional air supply structure of the dual air inlet centrifugal fan 9 and evaporator 10, a three-dimensional airflow circulation of bottom return air and top air supply is constructed, which effectively solves the problem of temperature and humidity stratification in large grain depot spaces and significantly improves the uniformity of cooling and heat exchange efficiency. Furthermore, a connection port 8 is added to the end of the condenser 7. The connection port 8 is a waste heat recovery interface, which can be used to supply the condensed waste heat to the heat-requiring scenarios such as grain pile insulation and drying preheating through an external heat exchange device, so as to realize the cascade utilization of energy. Secondly, the unit has a narrower width, which reduces the load pressure on the outer wall of the grain depot during installation. It is especially suitable for the renovation of old grain depots with insufficient wall load-bearing capacity, reducing the phenomenon of wall cracking and fundamentally improving the installation safety and applicability to complex working conditions.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, but such modifications, substitutions, and variations are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A grain air conditioner, comprising a housing (1), characterized in that: A dual-axial flow fan (2) is provided at one end of the device housing (1), and a condenser (7) is installed at one end of the dual-axial flow fan (2). A dual-inlet centrifugal blower (9) is provided at the other end of the device housing (1), and an evaporator (10) is provided at the lower end of the dual-inlet centrifugal blower (9). A compressor (4), a liquid storage tank (5), and a dryer filter (6) are provided between the dual-axial flow fan (2) and the condenser (7). An electrical control component (3) is provided on the top of the compressor (4). A vent (11) is provided at one end of both the dual-inlet centrifugal blower (9) and the evaporator (10).

2. A grain air conditioner according to claim 1, characterized in that: The compressor (4), liquid storage tank (5) and dryer filter (6) are located on the same horizontal plane as the dual-inlet centrifugal blower (9), and the dual-inlet centrifugal blower (9) is connected to the inner wall of the device housing (1).

3. A grain air conditioner according to claim 1, characterized in that: The dual-axial flow fan (2) is installed in front of and behind the condenser (7), and a protective cover is provided on the outer wall of the dual-axial flow fan (2).

4. A grain air conditioner according to claim 1, characterized in that: The condenser (7) is provided with a filter screen (13) at the end away from the dual axial flow fan (2), and the filter screen (13) is bolted to the device housing (1).

5. A grain air conditioner according to claim 1, characterized in that: An expansion valve (12) is provided at one end of the evaporator (10), and the expansion valve (12) is connected to the inner wall of the device housing (1).

6. A grain air conditioner according to claim 1, characterized in that: The device housing (1) is an assembled structure with multiple sets of support frames on the inner wall, and the support frames are arranged symmetrically.

7. A grain air conditioner according to claim 1, characterized in that: The condenser (7) has a connection port (8) at one end, and the connection port (8) is located on one side of the device housing (1).

8. A grain air conditioner according to claim 7, characterized in that: The connection port (8) is a waste heat recovery interface, and the connection port (8) can be connected to an external drive device.

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