Fruit and vegetable airing shed

Abstract

The utility model relates to a fruit and vegetable airing shed which comprises a shed body, the shed body comprises a transparent shed wall, a water vapor channel used for releasing water vapor is arranged between the shed wall and an installation base face of the shed body, and a heat storage structure capable of absorbing and reflecting solar energy is arranged in the inner space of the shed body. Solar energy is absorbed through the transparent greenhouse wall and the heat storage structure, the solar energy is utilized through the transparent greenhouse wall and the heat storage structure, so that the temperature in the greenhouse body is greatly increased, water in fruits and vegetables is promoted to evaporate outwards, the drying temperature in the greenhouse can be controlled by adjusting the circulation area of the water vapor channel, and the drying efficiency is improved. The solar energy is a clean renewable energy source, so that the technical effect of reducing the production cost is achieved, and meanwhile, no pressure is caused to the environment; and meanwhile, the drying rack is arranged in the greenhouse body, so that fruits and vegetables to be dried can be uniformly placed.

Description

Technical Field

[0001] The utility model relates to the technical field of fruit and vegetable drying, and particularly relates to a fruit and vegetable drying shed. Background Art

[0002] In production, there is often a process of drying materials, such as the production process of dried fruits and vegetables. Mechanically speaking, the drying process is a process of using heat energy to vaporize the moisture in solid materials and diffuse it into the air. After the surface of the material obtains heat, the heat is transferred into the interior of the material, causing the moisture contained in the material to diffuse in a liquid or gaseous state from the interior of the material, gradually reaching the surface of the material, and then diffusing into the air through the gas film on the surface of the material, reducing the moisture contained in the material step by step until it finally becomes a dry state. Therefore, the drying process is actually a process of heat transfer and mass transfer.

[0003] Existing drying devices basically form hot air by means of electric heating or fuel heat generation, and then dry the materials with the hot air. This drying method consumes a large amount of energy, has a high production cost, and the production of fuel combustion and some electric energy (such as fuel power generation) will cause a certain burden on the environment, which is not conducive to long-term development.

[0004] Therefore, there is an urgent need for a fruit and vegetable drying shed with low production cost and no burden on the environment. Summary of the Utility Model

[0005] In order to solve the above problems, the utility model provides a fruit and vegetable drying shed, which makes full use of solar energy through a heat storage structure that can absorb and reflect solar energy, reduces energy consumption and does not pollute the environment.

[0006] To achieve the above object, the utility model provides the following solutions:

[0007] A fruit and vegetable drying shed includes a shed body. The shed body includes a transparent shed wall. A water vapor channel for releasing water vapor is arranged between the shed wall and the installation base surface of the shed body. A heat storage structure that can absorb and reflect solar energy is arranged in the internal space of the shed body.

[0008] Preferably, an adjustment curtain for controlling the flow area of the water vapor channel is arranged on the water vapor channel.

[0009] Preferably, a rolling curtain rod is arranged at the bottom of the adjustment curtain, and the rolling curtain rod is detachably connected to the shed body.

[0010] Preferably, the shed body further includes a shed frame. The top of the shed frame is arc-shaped. The two ends of the shed frame are connected to the base surface, and the shed wall is attached to the shed frame.

[0011] Preferably, the shed wall includes a first shed wall and a second shed wall. The first shed wall is attached to the top of the shed frame. The first shed wall is in an arched structure. The second shed wall matches the arched cross-section of the first shed wall, and the second shed wall is connected to the arched edge of the first shed wall.

[0012] Preferably, the flow area of the fluid channel between the first shed wall and the base surface is smaller than the flow area of the fluid channel between the second shed wall and the base surface.

[0013] Preferably, the highest point of the fluid channel between the second shed wall and the base surface is higher than the highest drying height of the fruits and vegetables.

[0014] Preferably, a drying rack for placing fruits and vegetables is further arranged in the internal space of the shed body, and adjacent drying racks are arranged at intervals.

[0015] Preferably, the spacing of the drying racks in the east-west direction is greater than the spacing of the drying racks in the north-south direction.

[0016] Preferably, the heat storage structure is cobblestones.

[0017] The utility model has achieved the following technical effects compared with the prior art:

[0018] The fruit and vegetable drying shed provided by this application utilizes solar energy through the transparent shed wall and the heat storage structure. After sunlight passes through the transparent shed body, a part directly irradiates on the fruits and vegetables, increasing the surface temperature of the fruits and vegetables. Another part irradiates on the heat storage structure, and the heat storage structure can absorb and reflect solar energy, greatly increasing the temperature inside the shed body, thereby promoting the evaporation of moisture inside the fruits and vegetables to the outside. The evaporated moisture is discharged to the outside of the shed body through the water vapor channel between the shed wall of the fruit and vegetable shed and the base surface to ensure the continuous progress of the evaporation and drying process. Through the above structure, solar energy is fully utilized. Solar energy is a clean and renewable energy source, thereby achieving the technical effect of reducing production costs without causing pressure on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] FIG Figure 1 is a schematic isometric view of an embodiment of the fruit and vegetable drying shed;

[0021] FIG Figure 2 is a schematic isometric view of another embodiment of the fruit and vegetable drying shed;

[0022] Appended Figure 3 It is a schematic diagram of a side view of an embodiment of a fruit and vegetable drying shed;

[0023] Among them, 1. Shed body; 2. Water vapor channel; 3. Heat storage structure; 4. Rolling curtain rod; 5. Shed frame; 6. First shed wall; 7. Second shed wall; 8. Drying rack. Specific implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The purpose of the present invention is to provide a fruit and vegetable drying shed. Through the cooperation of the transparent shed wall and the heat storage structure, it realizes the promotion of the evaporation of fruits and vegetables by using solar energy, achieves the technical effect of reducing production costs, and at the same time does not cause pressure on the environment.

[0026] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0027] Refer to Figures 1-3 , the fruit and vegetable drying shed disclosed in the embodiments of the present invention includes: a shed body 1 and a heat storage structure 3. The heat storage structure 3 is arranged in the internal space of the shed body 1. Among them, the shed body 1 includes a transparent shed wall, and a water vapor channel 2 for releasing water vapor is arranged between the shed wall and the installation base surface of the shed body 1; during use, sunlight can pass through the transparent shed wall and shine on the inside of the shed body 1. Part of the sunlight directly shines on the surface of the fruits and vegetables dried inside the shed body 1, directly raising the temperature of the surface of the fruits and vegetables. The other part of the sunlight shines on the surface of the heat storage structure 3. The heat storage structure 3 can absorb and reflect solar energy. The shed wall can reduce the temperature exchange between the inside and outside of the shed, thereby raising the overall temperature inside the shed body 1 to promote the evaporation of the internal moisture of the fruits and vegetables. When the water vapor concentration inside the shed body 1 is significantly higher than the air humidity outside the shed, the water vapor inside the shed will spontaneously discharge outward through the water vapor channel 2. At the same time, when the wind blows, the outside air of the shed body 1 can enter the inside of the shed body 1 through the water vapor channel 2 to form convection to promote the discharge of the water vapor inside the shed; adopting the above structure realizes the full utilization of solar energy. Solar energy is a clean and renewable energy source, thereby achieving the technical effect of reducing production costs without causing pressure on the environment.

[0028] Preferably, the shed wall is a light-transmitting plastic film.

[0029] As a preferred embodiment, an adjustment curtain is provided on the water vapor channel 2. The flow area of the water vapor channel 2 can be changed through the adjustment curtain. When the external wind speed is relatively high, the flow area of the water vapor channel 2 can be reduced through the adjustment curtain, and the convection speed of the air inside and outside the shed can be lowered to avoid a large drop in the temperature inside the shed, that is, the dry temperature inside the shed can be adjusted through the adjustment curtain.

[0030] As a preferred embodiment, a rolling curtain rod 4 is provided at the bottom of the adjustment curtain. The rolling curtain rod 4 is detachably connected to the shed body 1. The rolling curtain rod 4 is connected to the bottom of the adjustment curtain. When it is necessary to increase the flow area of the water vapor channel 2, the adjustment curtain can be wound around the outside of the rolling curtain rod 4 by rotating the rolling curtain rod 4, and thus the flow area of the water vapor channel 2 can be increased. When it is not necessary to adjust the flow area of the water vapor channel 2, the rolling curtain rod 4 is fixed on one side of the shed body 1, and a specific flow area can be maintained for drying.

[0031] Preferably, the rolling curtain rod 4 and the shed body 1 can be connected by a buckle, and the buckle is detachably connected to the rolling curtain rod 4 and the shed body 1 respectively; more preferably, the rolling curtain rod 4 and the shed body 1 can also be connected by tying.

[0032] More preferably, the adjustment curtain can be directly adjusted by a pull rope. The upper end of the pull rope is arranged above the adjustment curtain, and the lower end of the pull rope is connected to the lower end of the adjustment curtain. When it is necessary to adjust the height of the adjustment curtain, directly pull up the pull rope, and the adjustment curtain can be moved upward; it can be understood that those skilled in the art can control the up and down movement of the pull rope by manual pulling, and can also directly adjust the extension or retraction of the pull rope through a winding device driven by a motor.

[0033] As a preferred embodiment, the shed body 1 further includes a shed frame 5. The top of the shed frame 5 is arc-shaped. The two ends of the shed frame 5 are connected to the base surface, and the shed wall is attached to the shed frame 5. The arc-shaped setting method of the top ensures the structural strength of the drying shed, and the form of the shed frame 5 cooperating with the shed wall reduces the manufacturing difficulty of the drying shed; preferably, the shed frame 5 can be a bamboo pole or an aluminum alloy rod, which has high structural strength and low manufacturing cost, making the drying shed easier to promote.

[0034] As a preferred embodiment, the shed wall includes a first shed wall 6 and a second shed wall 7. The first shed wall 6 is attached to the top of the shed frame 5. The first shed wall 6 is an arched structure. The second shed wall 7 matches the arched cross-section of the first shed wall 6, and the second shed wall 7 is connected to the arched edge of the first shed wall 6. At this time, the first shed wall 6 and the second shed wall 7 serve as the adjustment curtain for adjusting the water vapor channel 2, and the gap between the first shed wall 6 and the second shed wall 7 after being rolled up and the base surface serves as the water vapor channel 2.

[0035] It can be understood by those skilled in the art that the factors affecting the evaporation rate of fruits and vegetables include temperature and humidity of the environment surrounding the fruits and vegetables. The temperature affects the evaporation rate by affecting the activity of water molecule movement. The higher the temperature, the more violent the movement of water molecules, and the faster the evaporation rate, and vice versa. The ambient humidity affects the evaporation rate by affecting the humidity difference between the air and the surface of fruits and vegetables. Therefore, the effect of ambient temperature on the evaporation of fruits and vegetables can directly penetrate into the inside of fruits and vegetables to promote the rapid evaporation of water inside fruits and vegetables, while the effect of ambient humidity on the evaporation rate of fruits and vegetables can only directly act on the surface of fruits and vegetables, and then gradually penetrate into the inside from the surface of fruits and vegetables that have been dried first, indirectly promoting the evaporation of water inside fruits and vegetables. That is to say, the evaporation mode of water in fruits and vegetables can also be regulated by controlling the flow area of ​​the water vapor channel 2.

[0036] Preferably, the gap between the lower end of the first shed wall 6 and the base surface is 1 / 4 of the total height of the shed body 1. When drying fruits and vegetables with high water content both inside and outside, in order to promote the evaporation of water inside the fruits and vegetables, the first shed wall 6 is set at a position relatively close to the base surface. While maintaining the connection between the inside and outside of the shed, the flow area of ​​the water vapor channel 2 is reduced, so that while air convection can be achieved, the temperature loss in the shed can be avoided as much as possible, so that the shed is kept at a relatively high temperature. At this time, the evaporation method of promoting the evaporation of water in fruits and vegetables by temperature is dominant, which can make the water inside the fruits and vegetables quickly diffuse outward, realize the rapid evaporation of the water inside the fruits and vegetables, and avoid the problem that the surface of the fruits and vegetables has been dried to the target humidity, but the humidity inside the fruits and vegetables is still high. In this process, due to the high overall humidity of the fruits and vegetables, the humidity in the shed will increase significantly, that is, there is a greater humidity difference between the inside and outside of the shed, and the water vapor in the shed can also quickly diffuse outward under the combined effect of high temperature and high humidity difference, ensuring the smooth progress of the drying process.

[0037] More preferably, the gap between the lower end of the first shed wall 6 and the base surface is 1 / 2 of the total height of the shed body 1. When drying fruits and vegetables with medium overall humidity, the gap between the lower end of the first shed wall 6 and the base surface is set to 1 / 2 of the total height of the shed body 1. This can greatly increase the diffusion rate of water vapor in the shed. At this time, fruits and vegetables with low humidity do not need higher temperatures to promote the evaporation of water inside the fruits and vegetables, thereby ensuring the smooth progress of the fruit and vegetable drying process.

[0038] More preferably, the gap between the lower end of the first shed wall 6 and the base surface is 3 / 4 of the total height of the shed body 1. When drying fruits and vegetables with relatively low overall humidity, the fruits and vegetables have extremely high requirements for environmental dryness and require a relatively drier external environment. The gap between the lower end of the first shed wall 6 and the base surface is set to 3 / 4 of the total height of the shed body 1, which further increases the water vapor exchange inside and outside the shed and ensures that the humidity inside the shed is lower.

[0039] Of course, according to the different humidity of the fruits and vegetables to be dried, the gap between the lower end of the first shed wall 6 and the base surface can also be set to different heights such as 1 / 5, 2 / 5, 3 / 5, 4 / 5 of the total height of the shed body 1. More preferably, the first shed wall 6 can be completely rolled up.

[0040] As a preferred embodiment, when the relative humidity of the external air is relatively high, such as on rainy or cloudy days or at night, the first shed wall 6 and the second shed wall 7 can be completely lowered to a position in contact with the base surface. At this time, the water vapor channel is completely closed, isolating the water vapor exchange inside and outside the shed, and avoiding the problem that the moisture content of the fruits and vegetables increases instead of decreasing due to the entry of external moisture into the shed body.

[0041] It can be understood that the adjustment of the flow surface of the water vapor channel 2 can also be applied to different drying periods of the same kind of fruits and vegetables.

[0042] Preferably, the flow area of the fluid channel between the first shed wall 6 and the base surface is smaller than the flow area of the fluid channel between the second shed wall 7 and the base surface. As is well known to those skilled in the art, in order to enable the drying shed to accommodate more fruits and vegetables, it is necessary to appropriately increase the volume of the drying shed. The way to increase it is to increase the setting length of the shed body 1 along the direction perpendicular to the arc section of the shed frame 5. The influence of the external air flow on the air flow exchange inside and outside the shed along the direction perpendicular to the arc section of the shed frame 5 is relatively small. Therefore, appropriately increasing the gap between the second shed wall 7 and the base surface can increase the water vapor exchange inside and outside the shed while minimizing the influence of the flow area of the water vapor channel 2 on the temperature inside the shed.

[0043] As a preferred way, the highest point of the fluid channel between the second shed wall 7 and the base surface is higher than the highest drying height of the fruits and vegetables; more preferably, the highest point of the fluid channel between the first shed wall 6 and the base surface is lower than the highest drying height of the fruits and vegetables.

[0044] As a preferred way, a drying rack 8 for placing fruits and vegetables is also provided inside the space of the shed body 1. The drying rack 8 can evenly place the fruits and vegetables, and the adjacent drying racks 8 are spaced apart. Through the drying rack 8, the gap between the fruits and vegetables can be appropriately increased to promote the evaporation of water. Further, according to the actual situation, the fruits and vegetables can also be directly placed on the heat storage structure on the base surface.

[0045] As an embodiment, the spacing between adjacent drying racks 8 in the east-west direction is greater than the spacing between adjacent drying racks 8 in the north-south direction, so that more sunlight can directly irradiate the heat storage mechanism inside the shed body 1 to improve the utilization rate of solar energy.

[0046] Preferably, the heat storage structure 3 can be laid on the base surface covered by the shed body 1 in a paving manner; further, the heat storage structure 3 can be laid on the base surface covered by the shed body 1 in a staggered manner according to the distribution of the drying racks 8, that is, the heat storage structure 3 is laid only at positions between the drying racks 8 that can be directly exposed to sunlight.

[0047] More preferably, the heat storage structure 3 is pebbles.

[0048] Furthermore, the heat storage structure 3 is a steel plate or a ceramic heat storage material coated with a solar heat-absorbing coating.

[0049] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0050] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A fruit and vegetable drying shed, characterized in that, It includes a shed body (1), the shed body (1) includes transparent shed walls, and a water vapor channel (2) for releasing water vapor is arranged between the shed walls and the installation base surface of the shed body (1), and a heat storage structure (3) capable of absorbing and reflecting solar energy is arranged in the internal space of the shed body (1).

2. The fruit and vegetable drying shed according to claim 1, characterized in that, An adjusting curtain for controlling the flow area of the water vapor channel (2) is arranged on the water vapor channel (2).

3. The fruit and vegetable drying shed according to claim 2, characterized in that, A rolling curtain rod (4) is arranged at the bottom of the adjusting curtain, and the rolling curtain rod (4) is detachably connected to the shed body (1).

4. The fruit and vegetable drying shed according to claim 1, characterized in that, The shed body (1) further includes a shed frame (5), the top of the shed frame (5) is arc-shaped, both ends of the shed frame (5) are connected to the base surface, and the shed walls are attached to the shed frame (5).

5. The fruit and vegetable drying shed according to claim 4, characterized in that, The shed walls include a first shed wall (6) and a second shed wall (7), the first shed wall (6) is attached to the top of the shed frame (5), the first shed wall (6) is an arched structure, the second shed wall (7) matches the arched cross-section of the first shed wall (6), and the second shed wall (7) is connected to the arched edge of the first shed wall (6).

6. The fruit and vegetable drying shed according to claim 5, wherein, The flow area of the fluid channel between the first shed wall (6) and the base surface is smaller than the flow area of the fluid channel between the second shed wall (7) and the base surface.

7. The fruit and vegetable drying shed according to claim 5, characterized in that, The highest point of the fluid channel between the second shed wall (7) and the base surface is higher than the highest drying height of fruits and vegetables.

8. The fruit and vegetable drying shed according to claim 1, characterized in that, A drying rack (8) for placing fruits and vegetables is further arranged in the internal space of the shed body (1), and adjacent drying racks (8) are arranged at intervals.

9. The fruit and vegetable drying shed according to claim 8, wherein, The spacing of the drying racks (8) in the east-west direction is greater than the spacing of the drying racks (8) in the north-south direction.

10. The fruit and vegetable drying shed according to claim 1, characterized in that, The heat storage structure (3) is cobblestones.

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