A low temperature moisture proof device

Abstract

The present invention discloses a low-temperature moisture-proof device, which may include a box body, a box door and a heat-insulating box arranged in the box body, wherein an evaporator is arranged in the heat-insulating box, and the evaporator is connected with an external refrigeration device, and the heat-insulating box is provided with an air inlet and an air outlet, and a fan is arranged in the air inlet, and both the air inlet and the air outlet are provided with a wind shield. The present invention condenses and absorbs water vapor in a storage room through the evaporator, and transports dry cold air into the storage room, thereby ensuring a low-temperature and dry environment in the box body; the present invention is particularly suitable for subtropical areas with high temperature and high humidity, and can not only play a role of refrigeration, but also a role of drying, and the temperature and humidity are adjustable, and the operation is convenient, and the application range for stored food and articles is wider than that of ordinary refrigerators and drying boxes.

Description

Technical Field

[0001] The invention relates to the field of low-temperature moisture-proof storage, in particular to a low-temperature moisture-proof device. Background Art

[0002] As consumers look to a healthier lifestyle, the proportion of dried food ingredients such as wolfberry, tea, mushrooms, longan, and cordyceps in the diet is gradually increasing. However, these dried food ingredients are very difficult to store. If they are stored at room temperature and in poor ventilation, they are prone to discoloration and deterioration over time, resulting in loss of nutrients. If they are stored in the refrigerator, they are easily affected by other foods in the refrigerator, causing moisture, mold, and deterioration.

[0003] Compared with the above-mentioned dry food ingredients, foods made of fresh fruit and sugar are more difficult to preserve. Candied Haws is the most typical one. As a traditional Chinese snack, Candied Haws are made and sold on the same day. Since Candied Haws is made of hawthorn and sugar, it is not easy to store. Hawthorn is a fresh fruit and can be preserved at low temperatures, but sugar will still melt when stored at low temperatures. The melting of sugar is mainly related to humidity, and low temperature cannot prevent the melting of sugar. Therefore, how to simultaneously meet the low temperature requirements of fresh fruit and the low humidity of sugar is a problem that needs to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a low-temperature moisture-proof device to solve the problems existing in the above-mentioned prior art, so that the low-temperature moisture-proof device can ensure low humidity while maintaining low temperature, which is conducive to the long-term preservation of food composed of fresh fruit and sugar.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a low-temperature moisture-proof device, comprising a box body, a box door and a thermal insulation box arranged in the box body, wherein an evaporator is arranged in the thermal insulation box, and the evaporator is connected to an external refrigeration device, and the thermal insulation box is provided with an air inlet and an air outlet, a fan is arranged in the air inlet, and both the air inlet and the air outlet are provided with wind shields.

[0007] Preferably, the temperature-isolating box is arranged on the inner wall of the box body, the air inlet and the air outlet are arranged on different surfaces of the temperature-isolating box, and the air inlet and the air outlet are both provided with wind shields;

[0008] Preferably, the wind shield of the air inlet is arranged inside the air inlet, and the wind shield of the air outlet is arranged outside the air outlet;

[0009] Preferably, a storage rack is provided at the lower part of the temperature-isolating box, a partition is provided inside the storage rack, an upper air duct is provided between the partition and the inner wall of the box, a partition channel is opened on the partition, the upper part of the storage rack is a side air duct, and the lower air duct is provided between the storage rack and the box door;

[0010] Preferably, multiple layers of the storage racks are arranged in the box body in the vertical direction, and the flow areas of the ventilation baffles of the storage racks increase from top to bottom;

[0011] Preferably, a drain outlet is further provided at the bottom of the insulation box, the position of the drain outlet is lower than the wind shield of the air inlet, and a defrost heater is provided on the evaporator;

[0012] Preferably, a heating device is further provided in the box, and the heating device is a fluorescent lamp or a resistance heater;

[0013] Preferably, the box door is used to place items to be stored in the box, and the box door is also provided with a small door, and the small door is used to take out the items stored in the box;

[0014] Preferably, the windshield of the air outlet is opened at an angle of at most 90 degrees;

[0015] Preferably, the low temperature moisture proof device further comprises:

[0016] A temperature sensor is disposed inside and / or outside the thermal insulation box and is used to sense the temperature inside and / or outside the thermal insulation box;

[0017] A humidity sensor is disposed outside the thermal insulation box and is used to sense the humidity outside the thermal insulation box;

[0018] The fan, cooling system and / or fluorescent lamp are switched on and off according to the temperature sensed by the temperature sensor; and / or the fan, cooling system and / or fluorescent lamp are switched on and off according to the humidity sensed by the humidity sensor.

[0019] Compared with the prior art, the present invention has achieved the following technical effects:

[0020] 1. The low-temperature moisture-proof device of the present invention isolates the evaporator from the storage environment, condenses and absorbs the water vapor in the storage room through the evaporator while maintaining the temperature difference between the inside and the outside, and transports the dry cold air into the storage room, thereby ensuring a low-temperature and dry environment in the box. The humidity in the box is maintained at 15% to 40%. Since the humidity is not extremely low, it will not take away the moisture in the food, but can only slowly take away the moisture on the surface of the food such as fresh fruit, but it will not affect the taste of the food, so it is convenient to preserve the food composed of fresh fruit and sugar for a long time.

[0021] 2. The low-temperature moisture-proof device of the present invention uses intermittent dehumidification because the evaporator is isolated from the storage environment by a temperature-isolating box. The discharge of liquid when the temperature in the evaporator is lowered will not affect the humidity of the storage environment, so that the humidity of the storage environment is always maintained at a low condition.

[0022] 3. The heating device of the low-temperature moisture-proof device of the present invention heats up the storage room, raising the temperature inside the storage room. At this time, the temperature in the insulation box is cooled and cooled. In this way, the inside and the outside are heated and cooled at the same time, which can cause a temperature difference between the inside and the outside in the shortest time. After the temperature difference reaches the standard, the fan can be started for air circulation and dehumidification, shortening the dehumidification start-up time and greatly improving the dehumidification efficiency. The heating device can use a heating tube or a strong fluorescent lamp. The fluorescent lamp can also have a lighting effect, killing two birds with one stone.

[0023] 4. A small door is embedded in the door of the low-temperature moisture-proof device of the present invention. The door can be opened when food or articles are placed in the moisture-proof device, and the small door can be opened when food or articles are taken out. This can prevent excessive external moisture from flowing into the box and keep the humidity from rising rapidly.

[0024] 5. The low-temperature moisture-proof device of the present invention can store dried food materials such as wolfberry, tea, mushrooms, longan, cordyceps, etc., and has a unique effect on the combination of fresh fruit and sugar. It can also store medicines and medical equipment, and has a wide range of uses.

[0025] 6. The low-temperature moisture-proof device of the present invention can not only dehumidify by adjusting the temperature difference, but also cool down the storage room by adjusting the temperature difference amplitude. Moreover, the external heating device can also heat up the storage room. Under the premise of dehumidification, the temperature of the storage room can be adjusted, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a structural schematic diagram of the low-temperature moisture-proof device of the present invention;

[0028] Figure 2 It is a schematic diagram of a control module of the low-temperature moisture-proof device of the present invention;

[0029] Among them, 1-box body, 2-evaporator, 3-insulated box, 4-air inlet, 5-air outlet, 6-fluorescent lamp, 7-storage rack, 8-box door, 9-small door, 10-drain outlet, 11-partition channel. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a low-temperature moisture-proof device to solve the problems existing in the prior art, so that the low-temperature moisture-proof device can ensure low humidity while maintaining low temperature, which is conducive to the long-term preservation of food composed of fresh fruit and sugar.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Embodiment 1

[0034] like Figure 1 As shown, this embodiment provides a low-temperature moisture-proof device, including a box body 1, a box door 8 and a temperature-isolating box 3 arranged in the box body 1, and the temperature-isolating box 3 divides the box body 1 into two parts: a storage room and a cooling and dehumidifying room.

[0035] Cooling and dehumidification chamber part:

[0036] The surface of the thermal insulation box 3 of this embodiment is coated with a heat-insulating material to ensure that there is a temperature difference between the inside and outside of the thermal insulation box 3. An evaporator 2 is arranged in the thermal insulation box 3, and the evaporator 2 is connected to an external refrigeration device. A defrost heater is arranged on the evaporator 2. The lower part of the evaporator 2 is the bottom surface of the thermal insulation box 3. A drain outlet 10 is arranged on the side of the bottom surface of the thermal insulation box 3. The thermal insulation box 3 is provided with an air inlet 4 and an air outlet 5. A fan is arranged in the air inlet 4, and both the air inlet 4 and the air outlet 5 are provided with wind shields.

[0037] The insulation box 3 of this embodiment is arranged at the inner top of the box body 1, the air inlet 4 is arranged at the bottom of the insulation box 3 and close to the inner wall of the box body 1, and the air outlet 5 is opened at the front of the insulation box 3, the direction of the air outlet 5 is facing the box door 8, and the air outlet 5 and the air inlet 4 are both provided with wind shields, but the positions of the wind shields are different;

[0038] The wind shield of the air inlet 4 is arranged in the temperature insulation box 3 and is horizontally blocked above the air inlet 4, so that the fan of the air inlet 4 transports the moisture and high-temperature gas in the storage room to the cooling and dehumidifying room, and the airflow blows the wind shield open, and the moisture and high-temperature gas flows through the fin heat exchanger of the evaporator 2 from one side to the other. After sufficient heat exchange, not only the temperature of the gas can be reduced, but also the water vapor condenses and adheres to the evaporator 2 due to the temperature reduction, and the moisture and low-temperature gas flows out from the air outlet 5. Here, the wind shield of the air outlet 5 is vertically arranged outside the air outlet 5, and the moisture and low-temperature gas blows the wind shield open, and the moisture and low-temperature gas flows into the storage room. Since the opening angle of the wind shield of the air outlet 5 is at most 90 degrees, the opening angle of the wind shield is usually about 45 degrees. When the wind shield is about 45 degrees, it can ensure that the wind energy changes the wind direction along the wind shield and flows out vertically downward, which is beneficial to the internal circulation of the gas.

[0039] Storage room part:

[0040] A storage rack 7 is arranged at the lower part of the temperature-isolating box 3, a partition is arranged inside the storage rack 7, and a partition channel 11 is opened on the partition. Three layers of storage racks 7 are arranged vertically in the box body 1 of this embodiment, and the flow area of ​​the partition channel 11 of the storage rack 7 increases from top to bottom. Considering the uniform circulation of the circulating air in the air duct, the flow area of ​​the partition channel 11 is adjusted. Since the storage rack 7 of the first layer is closer to the air inlet 4, the flow area of ​​the partition channel 11 of the storage rack 7 of the first layer is set to the minimum, and the flow area of ​​the partition channel 11 of the storage rack 7 on the third layer at the bottom is set to the maximum, thereby ensuring the air circulation of the entire storage room.

[0041] Regarding the air duct setting: an upper air duct is set between the partition and the inner wall of the box body 1, the upper part of the storage rack 7 is a side air duct, and the lower air duct is between the storage rack 7 and the box door 8;

[0042] When the fan is working, the fan draws the moisture and high-temperature gas from the side air duct into the insulation box 3 through the upper air duct for cooling and dehumidification. The moisture and low-temperature gas flow out from the air outlet 5 and enter the lower air duct, and then from the lower air duct along the side air duct on the upper part of the three storage racks 7 to dehumidify and cool the food on the storage rack 7. Then the newly generated moisture and high-temperature gas flow into the upper air duct again and continue to enter the insulation box 3 for circulation through the fan.

[0043] like Figure 1As shown, the low-temperature moisture-proof device of this embodiment is provided with a heating device in the box body 1. The heating device can be a heater or a strong fluorescent lamp 6. The heating device of this embodiment is a fluorescent lamp 6, which can also have a lighting effect, killing two birds with one stone. The specific fluorescent lamp 6 with heating function is arranged on the side wall of the box body 1. On the one hand, it has a lighting effect, and on the other hand, it can heat up the storage room and increase the temperature in the storage room. At this time, the insulation box 3 is cooled and cooled. In this way, the inside and the outside are heated and cooled at the same time, which can cause a temperature difference between the inside and the outside in the shortest time. After the temperature difference reaches the standard, the fan can be started for air circulation and dehumidification, which greatly improves the dehumidification efficiency.

[0044] The box door 8 of this embodiment is also provided with a small door 9, which is used to take out the articles stored in the box body 1. The box door 8 is used to place articles or food in the low-temperature moisture-proof device. Separating the taking and placing is conducive to preventing moisture from the outside air from entering the box body 1 in large quantities.

[0045] Electronic control part:

[0046] like Figure 2 As shown, a first temperature sensor is provided inside the insulation box 3 for sensing the temperature T1 inside the insulation box 3; a second temperature sensor is provided outside the insulation box 3 for sensing the temperature T2 outside the insulation box 3;

[0047] A humidity sensor is provided in the box body 1 of the storage room for sensing the humidity W outside the temperature-isolating box 3;

[0048] The data output terminals of the first temperature sensor, the second temperature sensor and the humidity sensor are respectively connected to the input terminal of the controller, and the control terminal of the controller is respectively connected to the fan, the refrigeration system and the fluorescent lamp 6 .

[0049] The humidity sensor measures the humidity W of the storage room in the low-temperature moisture-proof device and inputs it into the controller. The controller determines that when the humidity W is greater than the humidity threshold of 40%, the controller controls to turn on the refrigeration system and the fluorescent lamp 6 in the strong light mode. The first temperature sensor and the second temperature sensor input the measured temperatures T1 and T2 into the controller. The controller performs a difference operation on T1 and T2, and determines that when T2-T1≥5°C, the controller controls the fluorescent lamp 6 in the strong light mode to turn off and the fan to turn on, and the gas with high temperature and humidity in the storage room is cooled and dehumidified.

[0050] When the humidity W obtained by the humidity sensor is less than the humidity threshold of 15%, and the controller obtains that the humidity input by the humidity sensor is lower than the humidity threshold of 15%, the controller controls the fan to turn off. At this time, the wind shields all fall down to block the air inlet 4 and the air outlet 5. After the fan is turned off, the controller controls the refrigeration system to turn off the refrigeration.

[0051] The temperature in the storage room of the present invention can continue to drop according to specific needs. The start or shut down threshold of the humidity can be adjusted according to specific working conditions, and is not limited to W=15% or 40% in the above embodiment. The temperature difference between the inside and outside of the insulation box can also be set according to actual conditions, and is not limited to △T=5°C in the above embodiment.

[0052] The fluorescent lamp of the present invention has two modes: normal mode and strong light mode. The box door can only be opened and closed in the normal mode of the fluorescent lamp, and the controller can control the opening and closing of the fluorescent lamp in the strong light mode. However, it is not necessary for the fluorescent lamp of the present invention to heat the air. When the fluorescent lamp does not heat, it is also possible to start the dehumidification by cooling the temperature in the insulation box to meet the temperature difference. The additional heating outside the insulation box is added only to shorten the dehumidification startup time and save energy.

[0053] The low-temperature moisture-proof device of the present invention is not a drying device, so the humidity control cannot reach the level of a drying box, but the drying box does not achieve high-temperature drying. The present invention is particularly suitable for subtropical areas with high temperature and humidity. It can not only play a role in refrigeration, but also play a role in dehumidification and drying. Moreover, the temperature and humidity are adjustable and the operation is convenient. It has a wider range of applications for storing food and articles than ordinary refrigerators and drying boxes.

[0054] Adaptive changes based on actual needs are all within the protection scope of the present invention. The evaporator of the present invention can be set at any position inside the box as needed, and the positions of the air inlet and the air outlet are not limited to the above embodiments, as long as the air inlet and the air outlet can achieve air circulation.

[0055] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A low temperature moisture proof device, characterized in that: It includes a box body, a box door and an insulation box arranged in the box body, the surface of the insulation box is coated with insulation material, an evaporator is arranged in the insulation box, the evaporator is connected with an external refrigeration device, the insulation box is provided with an air inlet and an air outlet, a fan is arranged in the air inlet, and both the air inlet and the air outlet are provided with wind shields; a multi-layer storage rack is arranged in the vertical direction at the lower part of the insulation box, a partition is arranged on the inner side of the storage rack, a partition channel is opened on the partition, and the flow area of ​​the partition channel of the storage rack increases from top to bottom.

2. The low temperature moisture proof device according to claim 1, characterized in that: The temperature-isolating box is arranged on the inner wall of the box body, the air inlet and the air outlet are arranged on different surfaces of the temperature-isolating box, and the air inlet and the air outlet are both provided with wind shields.

3. The low temperature moisture proof device according to claim 2, characterized in that: The wind shield of the air inlet is arranged inside the air inlet, and the wind shield of the air outlet is arranged outside the air outlet.

4. The low temperature moisture proof device according to claim 3, characterized in that: An upper air duct is arranged between the partition plate and the inner wall of the box body, the upper part of the storage rack is a side air duct, and the lower air duct is arranged between the storage rack and the box door.

5. The low temperature moisture proof device according to claim 1, characterized in that: A drain outlet is also provided at the bottom of the insulation box, and the position of the drain outlet is lower than the wind shield plate of the air inlet. A defrost heater is provided on the evaporator.

6. The low temperature moisture proof device according to claim 1 or 5, characterized in that: The box body is also provided with a heating device, which is a fluorescent lamp or a resistance heater.

7. The low temperature moisture proof device according to claim 1, characterized in that: The box door is used for placing items to be stored in the box, and a small door is also provided on the box door, and the small door is used for taking out the items stored in the box.

8. The low temperature moisture proof device according to claim 1, characterized in that: The opening angle of the wind shield of the air outlet is at most 90 degrees.

9. The low temperature moisture proof device according to claim 1, characterized in that: The low temperature moisture proof device also includes: A temperature sensor is disposed inside and / or outside the thermal insulation box and is used to sense the temperature inside and / or outside the thermal insulation box; A humidity sensor is arranged outside the thermal insulation box and is used to sense the humidity outside the thermal insulation box; The fan, cooling system and / or fluorescent lamp are switched on and off according to the temperature sensed by the temperature sensor; and / or the fan, cooling system and / or fluorescent lamp are switched on and off according to the humidity sensed by the humidity sensor.

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