Energy-saving fruit differential pressure ripening warehouse

Abstract

The utility model discloses an energy-saving differential pressure ripening warehouse for fruits. The energy-saving differential pressure ripening warehouse comprises a differential pressure circulating system, a refrigeration compression system and a ventilation system, the differential pressure circulation system comprises an air duct cavity, a vertical air guide duct and an axial flow fan, the air guide duct is communicated with the air duct cavity, an air outlet of the axial flow fan faces upwards and is located in the air duct cavity, the air outlet of the axial flow fan is correspondingly provided with a heat exchanger, and the refrigeration compression system can convey different heat exchange media to the heat exchanger according to the temperature adjusting requirement. By means of the differential pressure circulation system, air circulation in the warehouse body can be uniform and regular, gas circulation components, ethylene and temperature distribution of the ethylene are more uniform, the situation that the maturity of fruits is not uniform due to the fact that the temperature or the ethylene concentration is not uniform can be avoided, and the device is suitable for large-scale ripening of the fruits; and the medium introduced into the heat exchange coil pipe is switched according to requirements through the compression refrigeration system, and more energy conservation and consumption reduction are achieved especially for the temperature rise of the warehouse.

Description

Technical Field

[0001] The utility model relates to the technical field of fruit ripening, in particular to an energy-saving fruit pressure difference ripening warehouse. Background Art

[0002] Using ethylene gas to ripen fruits is one of the commonly used ripening methods. It mainly uses ethylene generators to produce ethylene gas to ripen packaged fruits in ripening warehouses, such as bananas, kiwis, mangoes, avocados, etc. However, during the ripening process, the packaged fruits are usually piled up. Traditional warehouses have no gas circulation, which easily leads to uneven distribution of ethylene. As a result, it is easy to cause the fruits placed closer to the ethylene gas entry point or the ethylene generator to be exposed to a higher concentration of ethylene, which easily leads to uneven ethylene concentrations in the same batch of fruits in the warehouse, resulting in uneven maturity of the fruits, and even some overripe and some not yet ripe, which is not conducive to large-scale ripening of fruits; and in the process of ripening fruits exposed to higher ethylene concentrations, the surrounding temperature will be higher, which will lead to uneven temperature distribution in the warehouse, and further lead to uneven maturity of the fruits; there are also improvements to conventional warehouses, that is, installing fans in the warehouse, but the air outlet of the fans generally installed is facing straight ahead, and the gas circulation is prone to turbulence and irregularity, which will still easily lead to uneven distribution of ethylene and its temperature. The temperature of the ripening warehouse needs to be adjusted according to demand. Currently, compression refrigeration systems are mostly used to cool the warehouse, while heating the ripening warehouse mostly relies on heating wires, without considering further energy saving and temperature regulation. Therefore, it is necessary to improve the existing technology and provide a fruit ripening warehouse with uniform air circulation, which can make the gas flow composition, ethylene and its temperature distribution more uniform, and more energy-saving and consumption-reducing. Utility Model Content

[0003] Therefore, based on the above background, the utility model provides an energy-saving fruit pressure difference ripening warehouse, which can make the air circulation in the warehouse uniform and regular through the pressure difference circulation system, and the gas flow composition, ethylene and its temperature distribution are more uniform; and through the compression refrigeration system, the heat exchange medium introduced into the evaporator is switched according to the temperature adjustment requirements, which can achieve energy saving and consumption reduction, especially for the temperature increase of the warehouse.

[0004] The technical solution provided by the utility model is:

[0005] An energy-saving fruit pressure differential ripening warehouse, comprising a square warehouse body, the warehouse body comprising a warehouse left plate, a warehouse right plate, a warehouse top plate, and a warehouse rear plate, the warehouse body is provided with a door hole facing away from the warehouse rear plate, and the door hole is provided with a sealed door body; it comprises a pressure differential circulation system, a compression refrigeration system, and a ventilation system;

[0006] The pressure difference circulation system includes a horizontal air duct cavity, a vertical air guide duct, and an air cooler. The air duct cavity is located at the upper end of the air guide duct, and the air guide duct is communicated with the air duct cavity; the air cooler is a fan with air outlets on both left and right sides.

[0007] Furthermore, a horizontal partition is provided in the center above the storage body, the partition is spaced apart from the top plate of the storage body, and the air coolers are installed in a row in the center of the partition along the length direction of the storage body.

[0008] Furthermore, the air guide duct is formed by adjacent vertical air guide plates, and the air guide plates are respectively arranged on the left plate and the right plate of the warehouse;

[0009] The partition is provided with a plurality of baffles, and the baffles and the vertical wind shield located above the partition divide the space between the partition and the top plate of the warehouse into a plurality of air duct cavities.

[0010] Further, the compression refrigeration system includes a compressor, a condenser, a refrigerant liquid tank, an expansion valve, an evaporator, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a liquid supply check valve, and a liquid return check valve;

[0011] The evaporator includes a first heat exchange coil and a second heat exchange coil respectively corresponding to the air outlet of the air cooler; the evaporator includes a first pipe port and a second pipe port. The high-temperature and high-pressure gaseous refrigerant compressed by the compressor is transported to the evaporator through the first switching pipe and the second pipe port. The refrigerant after passing through the evaporator passes through the first pipe port and is transported to the refrigerant storage tank after passing through the second switching pipe.

[0012] Furthermore, a tray support is provided in the middle of the side wall of the air guide plate, and wind curtains are provided on the air guide plate below the partition and on the lower part of the tray support.

[0013] Furthermore, a rubber column strip is provided on the side wall of the air guide plate, and the outer curved surface of the rubber column strip is a convex semicircular arc shape.

[0014] Furthermore, the ventilation system includes an exhaust fan and an air inlet duct located on the top plate of the warehouse, and a first one-way valve is provided on the air inlet duct; the exhaust fan and the air inlet duct are arranged diagonally.

[0015] Furthermore, a support frame is provided in the middle of the storage body, and the support frame includes at least two rows of columns, and a support grid extending along the length direction of the storage body is provided above the columns.

[0016] The above technical solution has the following beneficial effects:

[0017] ① The utility model can make the air circulation in the storage body uniform and regular through the pressure difference circulation system, and the gas flow composition, ethylene and its temperature distribution are more uniform, which can avoid uneven maturity of fruits caused by uneven temperature or ethylene concentration, and is suitable for large-scale ripening of fruits;

[0018] The air cooler absorbs the air in the warehouse, and its outlet flows to the fruits on the tray through the air duct cavity and the air guide duct, then flows to the center of the warehouse, and is then sucked away by the fan, thus forming a uniform and regular air circulation. The sufficient gas circulation can drive the ethylene and its temperature distribution to be more uniform, so that the fruits in the warehouse can mature more evenly;

[0019] ② And the utility model is more energy-saving and consumption-reducing. Its compression refrigeration system switches the heat exchange coil of the evaporator to pass different heat exchange media according to the temperature adjustment requirements, which can achieve energy saving and consumption reduction. In particular, for the temperature increase of the warehouse, it passes the high-temperature and high-pressure gaseous refrigerant pressurized by the compressor into the heat exchange coil for heat exchange. Compared with the electric heating wire, it can save the equipment cost of the electric heating wire and is more energy-saving and consumption-reducing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 The structure of the utility model is shown in FIG. Figure 3 ;

[0024] Figure 4 The structure of the utility model is shown in FIG. Figure 4

[0025] Figure 5 This is a schematic diagram of the structure of the support frame of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the compression refrigeration system of the utility model;

[0027] Figure 7 The structure of the utility model is shown in FIG. Figure 5 ;

[0028] Figure 8 The use state of the utility model Figure 1 ;

[0029] Fig. 9 This is a schematic diagram of the air circulation of the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0033] The utility model is further described below in conjunction with the accompanying drawings.

[0034] The left and right directions in the following embodiments are as follows: Figure 2 The X arrow in the middle points to the direction, and the front and back directions are the directions pointed by the Y arrows.

[0035] Example 1: Reference Figure 1 and Fig. 9An energy-saving fruit pressure differential ripening warehouse shown includes a square warehouse body 1, wherein the warehouse body 1 includes a left warehouse plate 11, a right warehouse plate 12, a warehouse top plate 13, and a warehouse rear plate. The warehouse body 1 is provided with a door hole on the back of the warehouse rear plate, and the door hole is provided with a sealed door body 14; it includes a pressure differential circulation system, a refrigeration compression system, and a ventilation system; a support frame 200 is provided in the middle of the warehouse body 1, and the support frame 200 includes at least 2 rows of columns 22, and a support grid plate 23 extending along the length direction of the warehouse body 1 is provided above the columns 22.

[0036] Specific as Figures 1 to 3 , Figure 8 As shown, the pressure difference circulation system includes a horizontal air duct cavity 8, a vertical air guide duct 32, and a cooling fan 6. The air duct cavity 8 is located at the upper end of the air guide duct 32, and the air guide duct is connected to the air duct cavity 8; the fan 6 is a fan with air outlets on both sides. A horizontal partition 5 is provided in the storage body 1, and the fan 6 is installed in a row in the center of the partition 5 along the length direction of the storage body 1. The air guide duct 32 is formed by adjacent vertical air guide plates 3, and the air guide plates 3 are respectively protruded on the left plate 11 and the right plate 12 of the storage body;

[0037] The partition 5 is provided with a plurality of baffles 9, and the baffles 9 and the vertical wind shield are located above the partition 5 to divide the space between the partition 5 and the top plate into a plurality of air duct cavities 8. The partition and the baffle are connected and can be arranged as one. A partition plate 100 is provided above the partition 5 along the length direction, and the air cooler is located in the middle of the partition plate 100. The partition plate 100 has through holes corresponding to the left and right outlets of the air cooler. The air inlet of the air cooler is located below the partition.

[0038] A tray support 101 is provided in the middle of the side wall of the air guide plate 3, and an air curtain 4 is provided on the air guide plate 3 near the lower part of the partition and the lower part of the tray support 101, which can be fixedly connected by screws or binding ropes, of course, the method is not limited to the above. The air curtain 4 can be made of rubber cloth.

[0039] In specific applications, fruits are usually packaged in a container with through holes (the opposite side is provided with corresponding through holes, such as Figure 7 In the packaging box 106 shown in FIG. 1 , the packaging boxes 106 are stacked and placed on the pallet, and the air curtain 4 can block the airflow, thereby reducing the influence of the fruit boxes on the airflow, especially the influence of the fruit boxes on the uppermost layer of the pallet 105. Therefore, in a specific application, the height of the uppermost fruit box on the pallet 105 can press the air curtain 4, but the through hole thereof is located below the air curtain.

[0040] In this embodiment, Figure 3As shown, the tray support 101 includes a support portion, and fixed baffles 1011 are provided above and below the support portion 101. On the one hand, they are fixed to the side wall of the air guide plate 3 by bolts, and on the other hand, they can also play a role in blocking airflow.

[0041] like Fig. 9 As shown, the air circulation schematic diagram of the utility model, the air cooler absorbs the air in the center of the warehouse, and the air flow from its air outlet flows to the tray through the air duct cavity and the air guide duct respectively. The gas passes through the through hole and flows evenly to the center of the warehouse, and then is sucked away by the air cooler, thereby forming a uniform and regular air circulation. The gas circulation is sufficient, which can drive the ethylene and its temperature distribution to be more uniform, so that the maturity of the fruits in the warehouse can be more uniform;

[0042] like Figure 6 As shown, the refrigeration compression system 104 includes a compressor 1041, a condenser 1042, a refrigerant liquid tank 1043, an expansion valve 1044, an evaporator 1045, a first solenoid valve 1046, a second solenoid valve 1047, a third solenoid valve 1048, a fourth solenoid valve 1049, a liquid supply check valve 10416, and a liquid return check valve 10417;

[0043] The evaporator 1045 includes a first heat exchange coil 10411 and a second heat exchange coil 10412 corresponding to the air outlet of the air cooler 6 respectively; that is, the first heat exchange coil 10411 and the second heat exchange coil 10412 are respectively installed at the outlet positions on both sides of the air cooler, and the air passing through the outlet of the air cooler exchanges heat with the heat exchange coils. The evaporator includes a first pipe port 10413 and a second pipe port 10414. The high-temperature and high-pressure gaseous refrigerant compressed by the compressor 1041 is transported to the first heat exchange coil 10411 and the second heat exchange coil 10412 through the first switching pipe 10419 and the second pipe port 10414. The refrigerant after passing through the first heat exchange coil 10411 and the second heat exchange coil 10412 passes through the first pipe port 10413 and is transported to the refrigerant storage tank 1043 after passing through the second switching pipe.

[0044] The refrigerant of the refrigeration compression system 104 in this embodiment is Freon, and of course other refrigerants commonly used in compression refrigeration systems can also be used.

[0045] Specifically, a first pipe is provided between the compressor and the first heat exchange coil and the second heat exchange coil, a second pipe 10418 is provided between the first heat exchange coil and the second heat exchange coil and the refrigerant liquid tank 1043, a third pipe is provided between the refrigerant liquid tank 1043 and the condenser 1042, a fourth pipe 10415 is provided between the condenser 1042 and the compressor 1041, a first switching pipe 10419 is provided between the fourth pipe 10415 and the first pipe, and a switching pipe 10419 is provided between the refrigerant liquid tank 1043 and the second pipe 10418. A second switching pipeline is provided between the compressor and the first switching pipeline, the first solenoid valve 1046 is located on the second pipeline 10418, the second solenoid valve 1047 is located on the fourth pipeline 10415, the third solenoid valve 1048 is located on the first switching pipeline 10419, the fourth solenoid valve 1049 is located on the first pipeline 10414, the fourth solenoid valve 1049 is located between the compressor and the connection position of the first switching pipeline and the first pipeline, the liquid supply check valve 10416 is located on the second pipeline 10418, and the liquid return check valve 10417 is located on the second switching pipeline. A liquid distributor 1044 and an expansion valve 1044 are provided on the second pipeline, and the first heat exchange coil and the second heat exchange coil are connected to the liquid distributor 1044 respectively. The liquid distributor distributes the liquid refrigerant after throttling by the expansion valve to the first heat exchange coil and the second heat exchange coil.

[0046] The first pipeline or the second pipeline or the first cutting pipeline etc. may be appropriately provided with a shut-off valve etc. This is conventional technology and will not be elaborated here.

[0047] In specific applications:

[0048] When the temperature of the ripening warehouse needs to be lowered, the fourth solenoid valve 1049, the second solenoid valve 1047, the first solenoid valve 1046, and the liquid supply check valve 10416 can be opened, and the third solenoid valve 1048 and the liquid return check valve 10417 can be closed. Then, the low-temperature and high-pressure liquid in the refrigerant tank 1043 is transported to the evaporator through the second pipeline 10418 to heat and cool the air in the warehouse. The refrigerant after heat exchange is transported to the compressor 1041 through the first pipeline for compression, and then cooled through the condenser;

[0049] When it is necessary to increase the temperature of the ripening warehouse, the fourth solenoid valve 1049, the second solenoid valve 1047, the first solenoid valve 1046, and the liquid supply check valve 10416 can be closed, and the third solenoid valve 1048 and the liquid return check valve 10417 can be opened. Then, the high-temperature and high-pressure gas compressed by the compressor is transported to the evaporator through the first switching pipeline (the inlet and outlet of the compressor are both connected to buffer tanks, namely the front buffer tank and the rear buffer tank, which is common knowledge and is not drawn in the accompanying drawings. In the specific implementation, the gas in the front buffer tank is transported to the compressor for compression, and the compressed gas in the rear buffer tank is transported to the heat exchange coil of the evaporator through the first switching pipeline for heat exchange and temperature increase, wherein the first pipeline is connected to the front buffer tank, and the fourth pipeline 10415 is connected to the rear buffer tank), the air in the warehouse is heat exchanged and heated, and the refrigerant after heat exchange is transported to the refrigerant tank 1043 through the second switching pipeline, so that there is no need to install an electric heating wire separately, and compared with heating by electric heating wire, it is more energy-saving and consumption-reducing.

[0050] The ventilation system includes an exhaust fan 103 and an air inlet pipe 105 located on the top plate 13 of the warehouse, and a first one-way valve is provided on the air inlet pipe 105; the exhaust fan 103 is arranged diagonally with the air inlet pipe 105. The first one-way valve on the air inlet pipe 105 controls that air can only enter through the air inlet pipe but cannot enter; the exhaust fan 103 exhausts air so that negative pressure is generated in the warehouse body so that the first one-way valve opens. Preferably, the exhaust fan 103 is built with a second one-way valve, and the second one-way valve controls the outlet of the exhaust fan 103 so that air can only exit but not enter.

[0051] In specific implementation, the use of the ventilation system can adjust the overall ethylene concentration and the amount of carbon dioxide in the warehouse. For example, when the ethylene concentration or the carbon dioxide concentration is too high, the exhaust fan 103 is turned on to exhaust the air in the warehouse, and then the outdoor air is drawn into the warehouse through the opened first one-way valve to dilute the ethylene or carbon dioxide in the warehouse. For example, when the amount of carbon dioxide in the warehouse is insufficient, the carbon dioxide in the warehouse is supplemented by a carbon dioxide generator placed in the warehouse. For example, when the amount of ethylene in the warehouse is insufficient, the carbon dioxide in the warehouse can be supplemented by an ethylene generator placed in the warehouse.

[0052] Example 2: Reference Figure 1 and Fig. 9 An energy-saving fruit pressure differential ripening warehouse is shown. Compared with Example 1, the air guide plate 3 of this embodiment is installed on a first boss located on the ground, and a rubber column strip 31 is provided on the side wall of the air guide plate 3.

[0053] There is air leakage at the bottom of a conventional pallet. More specifically, the air guide plate 3 is installed on a first boss located on the ground. The first boss is cast with cement. The first boss can also block the airflow to a certain extent, reducing its passing through the bottom of the pallet. Furthermore, a rubber column 31 is provided on the side wall of the first boss facing the middle of the storage body, and the outer curved surface of the rubber column 31 is a convex semicircular arc. A rubber column 31 is provided on the side wall of the air guide plate 3, and the outer curved surface of the rubber column 31 is a convex semicircular arc. Figure 4 As shown, a support frame 200 is provided in the middle of the storage body 1, and the support frame 200 includes at least two rows of columns 22. A support grid plate 23 extending along the length direction of the storage body 1 is provided above the columns 22. The height of the support grid plate 23 corresponds to the height of the tray support member 101. When it is specifically applied, it can be as follows Figure 6 As shown, the left and right sides of the pallet 105 are supported on the pallet support 101 and the support grid 23 respectively, so that the pallet can be placed in two layers, which can improve the space utilization of the warehouse.

[0054] In specific applications, the tray supports 101 can be multiple arranged according to the scale of the ripening warehouse. For example, the number of the tray supports 101 can be set to 2, 3 or 4, so that the tray 105 can be arranged in more layers. Of course, the method is not limited to the above.

[0055] Furthermore, a second boss 21 is provided at the lower part of the support frame 200, and the second boss 21 can be cast with cement. In specific applications, an ethylene generator 102 can be placed on the second boss 21, and the ethylene generated by the ethylene generator 102 can be circulated with the absorption of the central airflow of the storage body by the cold air blower 6, so as to replenish ethylene gas and adjust the ethylene concentration of the storage body.

[0056] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An energy-saving fruit pressure differential ripening warehouse, comprising a square warehouse body, the warehouse body comprising a warehouse left plate, a warehouse right plate, a warehouse top plate, and a warehouse rear plate, the warehouse body is provided with a door hole facing away from the warehouse rear plate, and the door hole is provided with a sealing door body; It is characterized in that It includes a pressure difference circulation system, a compression refrigeration system, and a ventilation system; The pressure difference circulation system comprises a horizontal air duct cavity, a vertical air guide duct, and an air cooler. The air duct cavity is located at the upper end of the air guide duct, and the air guide duct is connected to the air duct cavity. The air cooler is a fan with air outlets on both sides. The compression refrigeration system includes a compressor, an evaporator, and a refrigerant storage tank. The evaporator includes a first heat exchange coil and a second heat exchange coil corresponding to the air outlet of the air cooler respectively; the evaporator includes a first pipe port and a second pipe port. The high-temperature and high-pressure gaseous refrigerant compressed by the compressor is transported to the evaporator through the first switching pipe and the second pipe port. The refrigerant after passing through the evaporator passes through the first pipe port and is transported to the refrigerant storage tank after passing through the second switching pipe.

2. The energy-saving fruit pressure difference ripening warehouse according to claim 1, characterized in that: A horizontal partition is provided at the center above the storage body, the partition is spaced apart from the top plate of the storage body, and the air coolers are installed in a row at the center of the partition along the length direction of the storage body.

3. The energy-saving fruit pressure difference ripening warehouse according to claim 2, characterized in that: The air guide duct is formed by adjacent vertical air guide plates, and the air guide plates are respectively arranged on the left plate and the right plate of the warehouse; The partition is provided with a plurality of baffles, and the baffles and the vertical wind shield located above the partition divide the space between the partition and the top plate of the warehouse into a plurality of air duct cavities.

4. The energy-saving fruit pressure difference ripening warehouse according to claim 2, characterized in that: The ventilation system comprises an exhaust fan and an air inlet pipe located on the top plate of the warehouse, and a first one-way valve is arranged on the air inlet pipe; the exhaust fan and the air inlet pipe are arranged diagonally.

5. The energy-saving fruit pressure difference ripening warehouse according to claim 3, characterized in that: The side wall of the air guide plate is provided with a tray support, and the air guide plate is provided with wind curtains at the lower part close to the partition and at the lower part of the tray support.

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