A refrigeration device

Abstract

The utility model provides a kind of refrigeration device, including fluid communication's dryer and refrigerator;The dryer is used to utilize hygroscopic material to absorb water in air to reduce the humidity of air, obtain low humidity air;The refrigerator is used to carry out heat exchange to low humidity air generated in the dryer with clean water to make the temperature of the low humidity air reduce, humidity increase, obtain low temperature high humidity air;It further includes the first heat exchanger being arranged in the refrigerator, and the first heat exchanger is used to carry out heat exchange to low temperature high humidity air in the refrigerator with indoor air.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration technology, and specifically relates to a refrigeration device. Background Technology

[0002] Evaporative cooling is a highly efficient cooling technology for open spaces. It utilizes the principle of evaporation to absorb heat and lower the air temperature. However, a drawback of evaporative cooling is that the exhausted air has high humidity, making it unsuitable for continuous operation in enclosed spaces. Another disadvantage is that cooling efficiency drops rapidly, or even ceases to cool, when air humidity exceeds 70%. Therefore, it is not suitable for areas with consistently high humidity levels of 60-70%.

[0003] This invention proposes a universally applicable method for evaporative air conditioning, which can improve cooling efficiency and reduce cooling temperature even in high humidity areas. Summary of the Invention

[0004] The present invention provides a recyclable refrigeration method and apparatus, achieving at least one of the following objectives: high refrigeration efficiency in both high-humidity and low-humidity areas, reducing refrigeration temperature, and reducing energy consumption.

[0005] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0006] In a first aspect, this utility model provides a recyclable refrigeration method, comprising the following steps:

[0007] S1: Reduce humidity

[0008] By using a moisture-absorbing material to absorb at least part of the moisture in the air, the humidity of the air is reduced to obtain low-humidity air, wherein the relative humidity of the low-humidity air is 3-40%, preferably 10-40%.

[0009] S2: Cooling

[0010] The low-humidity air obtained in step S1 is used to purge clean water. The low-humidity air and clean water exchange heat, and the temperature of the low-humidity air decreases while the humidity increases, resulting in low-temperature, high-humidity air. The indoor air is then exchanged heat with the low-temperature, high-humidity air to lower the temperature of the indoor air, resulting in low-temperature air. The low-temperature air is then discharged into the room to lower the indoor temperature.

[0011] Alternatively, the low-humidity air obtained in step S1 can be heat-exchanged with clean water to reduce the temperature of the low-humidity air and obtain low-temperature air; the low-temperature air can then be discharged into the room to lower the indoor temperature.

[0012] Furthermore, the recyclable refrigeration method provided by this utility model further includes S3: transporting the high-humidity air after heat exchange with indoor air in step S2 to step S1 for humidity reduction treatment.

[0013] Furthermore, the recyclable refrigeration method provided by this utility model further includes S4 regeneration of the moisture-absorbing material: heating the moisture-absorbing material to be regenerated in step S1 to release the water; or releasing the moisture in the moisture-absorbing material to be regenerated in step S1 by heating and air purging to obtain regenerated moisture-absorbing material.

[0014] Furthermore, the recyclable refrigeration method provided by this utility model includes one or more of the following: calcium chloride, magnesium chloride, silica gel, zeolite with added calcium chloride and / or magnesium chloride, zeolite, and montmorillonite.

[0015] Preferably, the moisture-absorbing material is solid calcium chloride or a saturated solution of calcium chloride.

[0016] Preferably, the moisture-absorbing material is solid magnesium chloride or a saturated solution of magnesium chloride.

[0017] Furthermore, in the recyclable refrigeration method provided by this utility model, the indoor air undergoes heat exchange in the first heat exchanger, reducing the temperature of the indoor air by 4-15°C.

[0018] Furthermore, in the recyclable refrigeration method provided by this utility model, in step S1, the moisture-absorbing material releases heat during the process of absorbing moisture from the air, and the heat is discharged to maintain the air temperature within a certain range. Preferably, the heat is discharged through a second heat exchanger.

[0019] Preferably, the temperature of the air is kept below (ambient temperature + 15°C).

[0020] Furthermore, the recyclable refrigeration method provided by this utility model includes a second heat exchanger in which indoor air or cold water is introduced to exchange heat with the air, thereby removing the heat. The temperature of the air is maintained within a certain range, and the indoor air or cold water that has absorbed heat is discharged outdoors.

[0021] Furthermore, in the recyclable refrigeration method provided by this utility model, in step S2, when the low-humidity air blows clean water, the temperature of the clean water rises, and the heat of the clean water is dissipated to maintain the temperature of the clean water within a certain range.

[0022] Preferably, in step S2, heat is removed from the clean water through heat exchange between cold water or cold air and the clean water to maintain the temperature of the clean water within a certain range. Preferably, the temperature of the clean water is maintained at less than or equal to 25°C.

[0023] Preferably, the heat of the clean water is removed through a third heat exchanger.

[0024] More preferably, the third heat exchanger is located inside or outside the refrigerator. Indoor air or cold water is introduced into the third heat exchanger. After heat exchange with the clean water, the temperature of the indoor air or the cold water rises to obtain air or cold water at a higher temperature, which is then discharged outdoors. The temperature of the clean water is maintained within a certain range.

[0025] Furthermore, the recyclable refrigeration method provided by this utility model includes the method of using the low humidity air obtained in step S1 to purge clean water in step S2, which includes: forming a water curtain from top to bottom with the clean water, and purging the water curtain with the low humidity air. During the purging process, the low humidity air and the clean water exchange heat to obtain the low temperature and high humidity air.

[0026] Preferably, the clean water flows from top to bottom through the wet curtain, forming a water curtain on the wet curtain.

[0027] Furthermore, the recyclable refrigeration method provided by this utility model includes a method for exchanging heat between the low-humidity air obtained in step S1 and clean water in step S2, which includes: forming a water curtain from top to bottom with the clean water, blowing the low-humidity air through the water curtain, and exchanging heat between the low-humidity air and the clean water during the blowing process to obtain the low-temperature air.

[0028] In a second aspect, this utility model provides a refrigeration device, comprising a dryer and a refrigeration unit in fluid communication.

[0029] The dryer is used to absorb moisture from the air using a moisture-absorbing material to reduce the humidity of the air and obtain low-humidity air.

[0030] The cooler is used to exchange heat between the low-humidity air generated in the dryer and clean water to reduce the temperature and increase the humidity of the low-humidity air, thereby obtaining low-temperature and high-humidity air.

[0031] It also includes a first heat exchanger disposed within the refrigerator, which is used to exchange heat between the low-temperature, high-humidity air inside the refrigerator and the indoor air. Indoor air is introduced into the air duct of the first heat exchanger, and the indoor air inside the heat exchanger exchanges heat with the low-temperature, high-humidity air inside the refrigerator, thereby reducing the temperature of the indoor air to obtain low-temperature air, which is then discharged into the room.

[0032] Furthermore, in the refrigeration device provided by this utility model, the refrigerator is provided with a high humidity air outlet, the dryer is provided with a high humidity air inlet, and the high humidity air outlet of the refrigerator is fluidly connected to the high humidity air inlet of the dryer through a pipe.

[0033] Furthermore, the refrigeration device provided by this utility model includes a wet curtain inside the refrigerator and a liquid circulation pump for conveying clean water to the wet curtain.

[0034] Preferably, it also includes a fan or blower for blowing the low-humidity air onto the wet curtain inside the cooler.

[0035] Furthermore, the refrigeration device provided by this utility model further includes a heater, which is used to heat and regenerate the moisture-absorbing material in the dryer after it has absorbed water.

[0036] Furthermore, the refrigeration device provided by this utility model further includes a second heat exchanger, which is used to exchange heat between the heat-releasing air in the dryer and the indoor air or cold water, so that the heat of the air in the dryer is transferred to the indoor air or cold water to maintain the air temperature within a certain range.

[0037] Furthermore, the refrigeration device provided by this utility model further includes a third heat exchanger, which is used to exchange heat between the clean water in the refrigeration unit and the indoor air or cold water, so that the heat of the clean water in the refrigeration unit is transferred to the indoor air or cold water to maintain the temperature of the clean water within a certain range.

[0038] A third aspect of this utility model provides another refrigeration device, comprising a dryer and a refrigerator in fluid communication:

[0039] The dryer is used to absorb moisture from the air using a moisture-absorbing material to reduce the humidity of the air and obtain low-humidity air.

[0040] The cooler is used to exchange heat between the low-humidity air generated in the dryer and clean water to lower the temperature of the low-humidity air, thereby obtaining low-temperature air, which is then discharged into the room.

[0041] Furthermore, another refrigeration device provided by this utility model includes a wet curtain inside the refrigerator, and a liquid circulation pump for conveying clean water to the wet curtain.

[0042] Preferably, it also includes a fan or blower for blowing the low-humidity air onto the wet curtain inside the cooler.

[0043] Furthermore, another refrigeration device provided by this utility model includes a heater for heating and regenerating the moisture-absorbing material in the dryer after it has absorbed water.

[0044] Furthermore, another refrigeration device provided by this utility model includes a second heat exchanger, which is used to exchange heat between the heat-releasing air in the dryer and the indoor air or cold water, so that the heat of the air in the dryer is transferred to the indoor air or cold water to maintain the air temperature within a certain range.

[0045] Furthermore, another refrigeration device provided by this utility model includes a third heat exchanger, which is used to exchange heat between the clean water in the refrigeration unit and the indoor air or cold water, so that the heat of the clean water in the refrigeration unit is transferred to the indoor air or cold water to maintain the temperature of the clean water within a certain range.

[0046] The beneficial effects of this utility model are:

[0047] The refrigeration method and apparatus provided by this utility model first dehumidifies the air and then exchanges heat with water to cool it down. The lower the humidity of the air, the greater the temperature drop after heat exchange with water, significantly improving refrigeration efficiency. Simultaneously, dehumidifying the air before cooling it facilitates mass exchange between the low-humidity air and water, reducing the size of the refrigeration unit. Furthermore, it is applicable to areas with consistently high air humidity and can ensure the maintenance of high refrigeration efficiency.

[0048] In the refrigeration method and device provided by this utility model, low-humidity air first exchanges heat with water to lower its temperature, and then exchanges heat indirectly with indoor air to lower the temperature of the indoor air, but the humidity remains unchanged, thus achieving equal humidity cooling and keeping the indoor humidity constant.

[0049] In the refrigeration method and device provided by this utility model, low-humidity air and water can directly contact each other for heat exchange, thereby reducing the air temperature. The air is then discharged into the room to lower the indoor temperature. The equipment is simple and has low energy consumption.

[0050] The air conditioning refrigeration method and device provided by this utility model can achieve refrigeration without a compressor, without vacuum requirements, without sealing requirements, and the equipment is easy to manufacture, has a long service life, and is low in cost.

[0051] The refrigeration method and refrigeration device provided by this utility model have low energy consumption and high refrigeration efficiency. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the structure of a refrigeration device according to an embodiment of the present invention.

[0053] Figure 2This is a schematic diagram of the structure of a refrigeration device according to another embodiment of the present invention. Detailed Implementation

[0054] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0055] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0056] The embodiments of this utility model will be described in detail below with reference to the examples. However, those skilled in the art will understand that the following embodiments are only for illustrating this utility model and should not be regarded as limiting the scope of this utility model. It should be noted that the terms "first," "second," and "third" in this specification are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of the reagents or instruments used are not specified, they are all conventional products that can be purchased commercially.

[0057] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0058] One embodiment of this utility model provides a refrigeration device, see reference. Figures 1-2 The system includes a dryer 11 and a cooler 12 in fluid communication. The dryer 11 has a dry air outlet 111, and the cooler 12 has a dry air inlet 121. The dry air outlet 111 of the dryer 11 is in fluid communication with the dry air inlet 121 through a pipe. The dryer 11 contains a moisture-absorbing material that absorbs moisture from the air, reducing the air humidity to obtain low-humidity air. This low-humidity air enters the cooler 12 through the dry air outlet 111 of the dryer 11 and the dry air inlet 121 of the cooler 12.

[0059] Reference Figure 1In one embodiment of this invention, low-humidity air enters the refrigerator 12 and exchanges heat with the low-temperature clean water inside. The temperature of the clean water in the refrigerator 12 is lower than the temperature of the low-humidity air. After the heat exchange, the temperature of the low-humidity air decreases and its humidity increases, resulting in low-temperature, high-humidity air. The system also includes a first heat exchanger 13, which is disposed within the refrigerator. Indoor air is introduced into the air duct of the first heat exchanger 13. The indoor air in the first heat exchanger 13 exchanges heat with the low-temperature, high-humidity air in the refrigerator 12. The temperature of this low-temperature, high-humidity air is lower than that of the indoor air. After the heat exchange, the temperature of the indoor air decreases, resulting in low-temperature air, which is then discharged into the room, thus lowering the indoor temperature and providing a cool and comfortable environment. The low-temperature, high-humidity air in the refrigerator indirectly exchanges heat with the indoor air through the first heat exchanger 13, ensuring that the indoor air cools while maintaining constant humidity, achieving isohumidity cooling. After being discharged into the room, the indoor humidity remains unchanged.

[0060] Reference Figure 2 In one embodiment of this invention, the low-humidity air generated by the dryer 11 enters the refrigerator 12 and exchanges heat with the low-temperature clean water inside. The temperature of the clean water in the refrigerator 12 is lower than the temperature of the low-humidity air. After the heat exchange, the temperature of the low-humidity air decreases, resulting in low-temperature air, which is then discharged into the room, thus lowering the indoor temperature and providing a cool and comfortable environment. In this case, when the low-humidity air directly exchanges heat with the water, the humidity increases while the temperature drops. In dry summer weather, this increases indoor humidity, making people more comfortable.

[0061] In one embodiment of the present invention, the moisture-absorbing material in the dryer 11 includes one or more of calcium chloride, magnesium chloride, silica gel, zeolite with added calcium chloride and / or magnesium chloride, zeolite, and montmorillonite.

[0062] It should be noted that in this invention, the moisture-absorbing material is a solid or liquid saturated solution. When the moisture-absorbing material in the dryer is calcium chloride, either solid calcium chloride or a calcium chloride solution can be used, and the calcium chloride solution can be a saturated calcium chloride solution. When the moisture-absorbing material in the dryer is magnesium chloride, either solid magnesium chloride or a magnesium chloride solution can be used, and the magnesium chloride solution can be a saturated magnesium chloride solution. In this invention, the moisture-absorbing material is a zeolite with added calcium chloride and / or magnesium chloride, including zeolite with added calcium chloride particles, zeolite with added magnesium chloride particles, and zeolite with both calcium chloride particles and solid magnesium chloride particles.

[0063] In one embodiment of this utility model, the moisture-absorbing material is selected as solid calcium chloride or solid magnesium chloride. After the air is dried by the moisture-absorbing material, the relative humidity of the resulting low-humidity air can be controlled at 25-30%.

[0064] In one embodiment of this utility model, the moisture-absorbing material is selected from a saturated solution of calcium chloride or a saturated solution of magnesium chloride. After the air is dried by the moisture-absorbing material, the relative humidity of the resulting low-humidity air can be controlled at 33-40%.

[0065] In one embodiment of this utility model, the moisture-absorbing material is silica gel. After the air is dried by the moisture-absorbing material, the relative humidity of the resulting low-humidity air can be controlled at 20-25%.

[0066] In one embodiment of this utility model, the moisture-absorbing material is selected as zeolite with added calcium chloride and / or magnesium chloride. After the air is dried by the moisture-absorbing material, the relative humidity of the resulting low-humidity air can be controlled at 25-30%.

[0067] In one embodiment of this utility model, zeolite is selected as the moisture-absorbing material. After the air is dried by the moisture-absorbing material, the relative humidity of the resulting low-humidity air can be controlled at 3-5%.

[0068] In one embodiment of this utility model, montmorillonite is selected as the moisture-absorbing material. After the air is dried by the moisture-absorbing material, the relative humidity of the resulting low-humidity air can be controlled below 20%.

[0069] In one embodiment of this utility model, reference is made to Figure 1 The refrigerator 12 is provided with a high-humidity air outlet 122, and the dryer 11 is provided with a high-humidity air inlet 112. The high-humidity air outlet 122 of the refrigerator 12 is fluidly connected to the high-humidity air inlet 112 of the dryer 11 through a pipe. The high-humidity gas after heat exchange between the refrigerator 12 and the indoor air in the first heat exchanger 13 is transported to the dryer 11 through the high-humidity air outlet 122 and the high-humidity air inlet 112, where it is dried by the moisture-absorbing material. This cycle is repeated. In this invention, the relative humidity of the low-humidity air after drying by the moisture-absorbing material is 3-40%, preferably 10-40%, which provides a better moisture absorption effect. When air at this level of low humidity is blown through water or comes into contact with water in a cooler, the humidity will increase, but the increase will be small. Generally, the humidity of the air increases by about 20-30% after air blows through a water surface or water curtain once. Therefore, during this air cooling process, the humidity increases simultaneously, but the humidity of the air inside will still not exceed that of the indoor air, especially in summer when indoor and outdoor humidity is high. After the low-humidity air comes into direct contact with water for heat exchange, the humidity of the air inside the cooler will not be higher than that of the indoor air. Therefore, by sending the air inside the cooler back to the dryer, the airflow can be controlled in a closed loop throughout the process, achieving internal gas circulation and reducing energy consumption.

[0070] In one embodiment of this utility model, reference is made to... Figures 1-2Inside the refrigerator 12, when low-humidity air enters above the refrigerator 12, heat exchange is achieved by directly blowing clean water onto the surface of the refrigerator, thus lowering the air temperature. In another embodiment of this invention, the refrigerator is equipped with a wet curtain and a liquid circulation pump for conveying clean water from the lower part of the refrigerator to the wet curtain. The wet curtain inside the refrigerator is designed to form a continuously flowing water curtain from top to bottom, with water continuously circulating up and down on the wet curtain, expanding the contact surface between air and water, thereby improving heat exchange efficiency and cooling effect. The liquid circulation pump also has low power and low energy consumption. In one embodiment of this invention, the refrigeration device also includes a fan or blower for blowing low-humidity air output from the dryer onto the wet curtain inside the refrigerator.

[0071] In one embodiment of this utility model, reference is made to Figures 1-2 The refrigeration device also includes a heater 14, which heats the moisture-absorbing material inside the regenerator 11 after it has absorbed water. When the moisture-absorbing material inside the dryer 11 is saturated with water, it is heated to evaporate the water vapor, resulting in regenerated moisture-absorbing material, which is then used to absorb moisture from the air for drying. When the moisture-absorbing material is solid, the heater 14 heats the saturated material until all or most of the water vapor is discharged, achieving regeneration. When the moisture-absorbing material is a saturated solution, the heater 14 drains the water from the saturated solution to restore it to a saturated state, achieving regeneration.

[0072] The heaters in this invention include, but are not limited to, electric heaters, solar heaters, infrared heaters, biomass heaters, and microwave heaters.

[0073] In one embodiment of this utility model, the refrigeration device further includes a second heat exchanger. The second heat exchanger is used to exchange heat between the air inside the dryer and the indoor air or cold water, so that the heat of the air inside the dryer is transferred to the indoor air or cold water to maintain the air temperature within a certain range. This can improve refrigeration efficiency and allow for better long-term refrigeration circulation. In this utility model, the moisture-absorbing material in the dryer releases heat during water absorption. This heat can raise the temperature of the air inside the dryer. This heat needs to be dissipated to maintain the temperature of the air inside the dryer within a certain range, ensuring that the temperature of the low-humidity air entering the refrigeration unit is not too high, thus affecting refrigeration efficiency. Preferably, the air temperature is maintained below (ambient temperature + 15°C), where the ambient temperature is based on the outdoor air temperature. For example, when the outdoor air temperature is 35°C, the air temperature inside the dryer needs to be controlled below 35°C + 15°C = 50°C. (Refer to...) Figures 1-2The heat exchange section of the second heat exchanger 15 is located inside the dryer 11. Indoor air or cold water is introduced into the second heat exchanger 15 to exchange heat with the air inside the dryer 11. The heat of the air is transferred to the indoor air or cold water inside the second heat exchanger 15, so that the air inside the dryer is controlled within the required temperature range. The indoor air or cold water inside the second heat exchanger 15 gains heat and is heated up, and then discharged to the outside.

[0074] In one embodiment of this invention, the refrigeration device further includes a third heat exchanger. The third heat exchanger is used to exchange heat between the clean water inside the refrigerator 12 and the indoor air or cold water, transferring the heat from the clean water inside the refrigerator to the indoor air or cold water to maintain the temperature of the clean water within a certain range. In this invention, heat exchange occurs when the low-humidity air inside the refrigerator blows through the clean water. The temperature of the low-humidity air decreases, while the temperature of the clean water continuously increases, thus dissipating the heat from the clean water to maintain its temperature within a certain range. Preferably, maintaining the temperature of the clean water below or equal to 25°C can improve refrigeration efficiency and allow for better long-term refrigeration circulation. In one embodiment of this invention, the third heat exchanger can be located inside or outside the refrigerator. (See reference...) Figures 1-2 In one embodiment of the present invention, the third heat exchanger 16 is located inside the refrigerator. Indoor air or cold water is introduced into the third heat exchanger 16. After heat exchange with the clean water in the refrigerator 12, the temperature of the indoor air or cold water rises to obtain air or cold water with a higher temperature, which is then discharged outdoors. The temperature of the clean water is controlled to be less than or equal to 25°C.

[0075] Reference Figure 1 An embodiment of this utility model provides a recyclable refrigeration method, comprising the following steps:

[0076] S11: Reduce humidity

[0077] Inside the dryer 11, moisture-absorbing material is used to absorb at least part of the moisture in the air, reducing the humidity of the air to 3-40%, thus obtaining low-humidity air.

[0078] S12: Refrigeration

[0079] The low-humidity air obtained in step S1 is used to blow clean water inside the refrigerator 12. The low-humidity air and clean water exchange heat, resulting in a decrease in temperature and an increase in humidity, thus obtaining low-temperature, high-humidity air. The indoor air is then transported into the first heat exchanger 13 located inside the refrigerator 12. In the first heat exchanger 13, the indoor air exchanges heat with the low-temperature, high-humidity air, thus lowering the temperature of the indoor air and obtaining low-temperature air. This low-temperature air is then discharged into the room from the first heat exchanger 13, lowering the indoor temperature and adjusting it to a comfortable temperature range suitable for the human body. In this embodiment, the clean water can be room-temperature clean water.

[0080] S13: Loop

[0081] The high-humidity air in the cooler 12 in step S2 is transported to the dryer 11 for recycling, thus achieving internal circulation.

[0082] S14: Regeneration of moisture-absorbing materials

[0083] When the absorbent material is saturated with water in step S1, it can no longer absorb moisture and needs to be regenerated. The absorbent material to be regenerated is transported to heater 14, where the moisture inside is released by heating, restoring its water absorption capacity and obtaining regenerated absorbent material. The regenerated absorbent material is then returned to dryer 11 to absorb moisture from the air in step S1 and is recycled.

[0084] Alternatively, the moisture in the absorbent material that needs to be regenerated can be released by heating and air purging simultaneously, thus obtaining a regenerated absorbent material.

[0085] Reference Figure 2 One embodiment of this utility model provides another recyclable refrigeration method, comprising the following steps:

[0086] S21: Reduce humidity

[0087] Inside the dryer 11, moisture-absorbing material is used to absorb at least part of the moisture in the air, reducing the humidity of the air to 3-40%, thus obtaining low-humidity air.

[0088] S22: Refrigeration

[0089] The low-humidity air obtained in step S21 is used to blow clean water in the cooler 12. The low-humidity air and clean water exchange heat, the temperature of the low-humidity air decreases and the humidity increases, resulting in low-temperature and high-humidity air, which is directly discharged into the room to lower the indoor temperature and adjust the indoor temperature to a comfortable range suitable for the human body. In this embodiment, the clean water can be room temperature clean water.

[0090] S23: Regeneration of moisture-absorbing materials

[0091] When the absorbent material is fully saturated with water in step S21, it can no longer absorb moisture and needs to be regenerated. The absorbent material to be regenerated is transported to heater 14, where the moisture inside is released by heating, restoring its water absorption capacity and obtaining regenerated absorbent material. The regenerated absorbent material is then returned to dryer 11 to absorb moisture from the air in step S21 and is recycled.

[0092] Alternatively, the moisture in the absorbent material that needs to be regenerated can be released by heating and air purging simultaneously, thus obtaining a regenerated absorbent material.

[0093] In this invention, in step S1, the relative humidity of the air dried by the moisture-absorbing material in the dryer 11 can reach 3-40%, preferably 10-40%. Typical but non-limiting relative humidity values ​​are 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, or 40%.

[0094] In this invention, the low-humidity air obtained in step S1 is air with a relative humidity of 3%-40%. The humidity of the low-humidity air is lower than that of the air before dehumidification. The air before dehumidification may include high-humidity air. After the moisture-absorbing material absorbs water, the humidity of the high-humidity air decreases, and the humidity reduction can reach 10%-90%. For example, outdoor high-humidity air has a relative humidity of 50%. After dehumidification by the aforementioned moisture-absorbing material, the humidity can be reduced to 40%, resulting in air with lower humidity, i.e., low-humidity air. For example, outdoor high-humidity air has a relative humidity of 94%. After dehumidification by the aforementioned moisture-absorbing material, the humidity can be reduced to 4%, resulting in air with lower humidity, i.e., low-humidity air.

[0095] According to tests, in some embodiments of this utility model, when the relative humidity of the air is 60% in winter, the relative humidity of the low-humidity air coming out of the dryer drops to 20%, and when the relative humidity of the air is 70-80% in summer, the relative humidity of the low-humidity air coming out of the dryer is 30-40%.

[0096] In one embodiment of the present invention, the humidity of the high-humidity air obtained in step S12 or step S22 is higher than the relative humidity of the low-humidity air entering the refrigerator. The high-humidity air has a relative humidity that is 3-40% higher than that of the low-humidity air.

[0097] In one embodiment of this utility model, the temperature of the indoor air is reduced by 4-15°C in the first heat exchanger.

[0098] In one embodiment of this invention, in step S11 or S21, the process of the moisture-absorbing material absorbing moisture from the air is a process of releasing heat. This released heat needs to be discharged from the dryer. A second heat exchanger is used to discharge this heat to maintain the temperature of the air inside the dryer within a certain range, ensuring that the temperature of the low-humidity air discharged from the dryer is not too high. The temperature of the discharged low-humidity air can be controlled within a set range. After this heat is discharged, the refrigeration method can be better cyclical for a longer period.

[0099] In one embodiment of this invention, in step S12 or S22, when low-humidity air blows clean water inside the refrigerator, the temperature of the clean water rises. The heat is then removed by heat exchange between the clean water and cold water or cold air in the third heat exchanger, thus maintaining the temperature of the clean water within a certain range. The third heat exchanger can be located inside the refrigerator. Removing this heat allows the refrigeration method to cycle more effectively over a longer period.

[0100] In one embodiment of this utility model, the regeneration of the moisture-absorbing material in step S14 or step S23 includes releasing the moisture from the moisture-absorbing material to be regenerated by simultaneously heating and purging. The purging method includes using air to blow away the moisture from the moisture-absorbing material after it has absorbed water, thereby achieving regeneration. Under the condition that the relative humidity of the air is less than or equal to 88%, blowing the moisture-absorbing material after it has absorbed water can remove the water.

[0101] The refrigeration method provided in this embodiment of the invention can control the airflow in a closed loop throughout the process, allowing for recycling, resulting in low energy consumption and high refrigeration efficiency.

[0102] The following is an explanation using specific implementation examples:

[0103] Implementation Case 1: Calcium Chloride Enhanced Ultra-Dry Air Evaporative Refrigeration

[0104] S11: Reduce humidity

[0105] The ambient temperature was 28.0℃ and the air humidity was 60%. Inside the desiccator, a saturated calcium chloride solution was used to absorb moisture from the air. After drying, the air humidity decreased to 40% and the temperature increased to 30℃.

[0106] S12: Refrigeration

[0107] The clean water inside the refrigerator is blown with low humidity air (40% humidity after drying in step S1), which lowers the air temperature to 20.2°C. The low-temperature air inside the refrigerator then passes through the first heat exchanger to lower the indoor air temperature from 26°C to 22°C, and is discharged into the room to reduce the indoor temperature.

[0108] S13: Internal Circulation

[0109] After the low-humidity air is blown away by the clean water, the air humidity increases to 45-60%, and then it enters the dryer again to start the next cycle.

[0110] S14: Regeneration of moisture-absorbing materials

[0111] After the calcium chloride solution in the dryer absorbs a certain amount of water by working continuously for 1-3 hours, the microwave heater is turned on, and water vapor is released and discharged outdoors. At the same time, a saturated calcium chloride solution is obtained, which then absorbs water from the air again.

[0112] The microwave heating power is 500 watts. Heating for 3 minutes consumes 25.0 Wh of electricity. In an indoor space of 20 square meters with a ceiling height of 3 meters, the temperature dropped from 26°C to 22°C. The cooling capacity is 312 kJ, which is equivalent to 86.6 Wh of cooling capacity.

[0113] The cooling efficiency of this embodiment is 3.46, which achieves the level 2 energy efficiency rating.

[0114] Implementation Case 2: Magnesium Chloride Enhanced Evaporative Refrigeration

[0115] S11: Reduce humidity

[0116] The ambient temperature was 30.0℃ and the air humidity was 70%. In the desiccator, a saturated magnesium chloride solution was used to absorb moisture from the air. After drying, the air humidity decreased to 40% and the temperature increased to 31℃.

[0117] S12: Cooling

[0118] The clean water inside the refrigerator is blown with low humidity air (40% humidity after drying in step S1), and the air temperature drops to 21.0°C. The low temperature air inside the refrigerator then passes through the first heat exchanger to lower the indoor air temperature from 28°C to 23°C, and is discharged into the room to lower the indoor temperature.

[0119] S13: Internal Circulation

[0120] After the low-humidity air is blown away by the clean water, the air humidity increases to 50-60%, and then it enters the dryer again to start the next cycle.

[0121] S14: Regeneration of moisture-absorbing materials

[0122] After the magnesium chloride solution in the dryer absorbs a certain amount of water during continuous operation for 1-3 hours, the infrared heater is turned on, releasing water vapor and venting it outdoors. At the same time, a saturated magnesium chloride solution is obtained, which then absorbs water from the air again.

[0123] The infrared heating power is 500 watts, heating for 4 minutes, which consumes 33.3 Wh of electricity. In an indoor space of 20 square meters with a ceiling height of 3 meters, the temperature dropped from 28°C to 23°C, with a cooling capacity of 390 kJ, equivalent to 108.3 Wh of cooling capacity.

[0124] The cooling efficiency of this embodiment is 3.25, which achieves Level 3 energy efficiency cooling.

[0125] Implementation Case 3: Silicone-Reinforced Evaporative Refrigeration

[0126] S11: Reduce humidity

[0127] The ambient temperature is 30.0℃ and the air humidity is 70%. Inside the desiccator, silica gel absorbs moisture from the air. After drying, the air humidity decreases to 25% and the temperature increases to 35℃.

[0128] S12: Refrigeration

[0129] The clean water inside the refrigerator is blown with low humidity air (25% humidity after drying in step S1), and the air temperature drops to 20.9°C. The low-temperature air inside the refrigerator then passes through the first heat exchanger to lower the indoor air temperature from 28°C to 22°C, and is discharged into the room to reduce the indoor temperature.

[0130] S13: Internal Circulation

[0131] After the low-humidity air is blown away by the clean water, the air humidity increases to 50-60%, and then it enters the dryer again to start the next cycle.

[0132] S14: Regeneration of moisture-absorbing materials

[0133] After the silica gel inside the dryer absorbs a certain amount of water during continuous operation for 1-2 hours, the infrared heater is turned on, releasing water vapor and venting it outdoors. At the same time, the regenerated silica gel is obtained and used to absorb water from the air again.

[0134] The infrared heating power is 500 watts, heating for 4 minutes, consuming 33.3 Wh of electricity. In an indoor space of 20 square meters with a ceiling height of 3 meters, the temperature dropped from 28℃ to 22℃, with a cooling capacity of 468 kJ, equivalent to 130 Wh of cooling. The cooling efficiency of this embodiment is 3.90, achieving Level 1 energy efficiency. If other energy consumption of 6.8 Wh is included, the total cooling efficiency is 3.24.

[0135] Implementation Case 4: Zeolite Desiccant Enhanced Evaporative Refrigeration

[0136] S11: Reduce humidity

[0137] The ambient temperature is 35.0℃ and the air humidity is 60%. In the desiccator, zeolite is used to absorb moisture from the air. After drying, the air humidity is reduced to 20% and the temperature is increased to 40℃.

[0138] S12: Refrigeration

[0139] The clean water inside the refrigerator is blown with low humidity air (25% humidity) after drying in step S1. The air temperature drops to 22.9°C. The low-temperature air inside the refrigerator lowers the indoor air temperature from 33°C to 23°C through the first heat exchanger and is then discharged into the room to lower the indoor temperature.

[0140] S13: Internal Circulation

[0141] After the low-humidity air is blown away by the clean water, the air humidity increases to 50-60%, and then it enters the dryer again to start the next cycle.

[0142] S14: Regeneration of moisture-absorbing materials

[0143] The magnesium chloride solution inside the dryer absorbs a certain amount of water after working continuously for 1-2 hours. Then, the infrared heater is turned on, and water vapor is released and discharged outdoors. At the same time, the regenerated silica gel is obtained and used to absorb water from the air again.

[0144] The zeolite desiccant inside the dryer absorbs a certain amount of water after working continuously for 1-2 hours. Then, microwave heating is turned on, and water vapor is released and discharged outdoors. At the same time, the regenerated zeolite is obtained, which absorbs water from the air again.

[0145] The microwave heating power is 500 watts, heating for 8 minutes, generating 66.6 Wh of electrical energy. In an indoor space of 20 square meters with a ceiling height of 3 meters, the temperature dropped from 33°C to 23°C, with a cooling capacity of 780 kJ, equivalent to 216.6 Wh of cooling. In this embodiment, the cooling efficiency is 3.25, achieving Level 3 energy efficiency.

[0146] Implementation Case 5: Silicone Multi-Reinforced Evaporative Refrigeration

[0147] S11: Reduce humidity

[0148] The ambient temperature was 30.2℃ and the air humidity was 70.5%. Inside the desiccator, silica gel was used to absorb moisture from the air. After drying, the air humidity decreased to 25% and the temperature increased to 35.5℃.

[0149] Using a second heat exchanger located inside the drying chamber, indoor air is introduced into the second heat exchanger. After heat exchange, the temperature of the indoor air in the second heat exchanger rises to 32.5°C and is discharged outdoors; the air temperature inside the dryer is maintained at 33.2°C.

[0150] S12: Refrigeration

[0151] The clean water inside the refrigerator is blown with low humidity air (25% humidity) after drying in step S1. The air temperature drops to 20.0°C. The low-temperature air inside the refrigerator lowers the indoor air temperature from 28.3°C to 20.1°C through the first heat exchanger and is then discharged into the room, thus lowering the indoor temperature.

[0152] The heat of the clean water is removed using a third heat exchanger. Specifically, cold water at 10-20°C is introduced into the third heat exchanger for cooling. After heat exchange, the water in the third heat exchanger is heated to 35.1°C and then discharged. At the same time, the temperature of the water in the chiller is kept below 25°C.

[0153] S13: Internal Circulation

[0154] After the low-humidity air is blown away by the clean water, the air humidity increases to 50-60%, and then it enters the dryer again to start the next cycle.

[0155] S14: Regeneration of moisture-absorbing materials

[0156] The silica gel desiccant inside the dryer absorbs a certain amount of water after working continuously for 1-2 hours. Then, the infrared heater is turned on, releasing water vapor, which is discharged outdoors at a temperature of 100-120℃. At the same time, the regenerated silica gel is obtained and used to absorb moisture from the air again.

[0157] The infrared heating power is 500 watts, heating for 5 minutes, consuming 41.7 Wh of electricity. In an indoor space of 20 square meters with a ceiling height of 3 meters, the temperature dropped from 28.3℃ to 20.1℃, with a cooling capacity of 634.68 kJ, equivalent to 176.3 Wh of cooling. The cooling efficiency of this embodiment is 4.22, achieving Level 1 energy efficiency. If other fans and system power (6.8 Wh) are added, the cooling efficiency becomes 3.63, also achieving Level 1 energy efficiency.

[0158] Implementation Case 6: Silicone Multi-Reinforced Direct Evaporation Refrigeration

[0159] S11: Reduce humidity

[0160] The ambient temperature was 30.7℃ and the air humidity was 70.0%. Inside the desiccator, silica gel was used to absorb moisture from the air. After drying, the air humidity decreased to 25.5% and the temperature increased to 35.1℃.

[0161] Using a second heat exchanger located within the drying chamber, indoor air is introduced into the second heat exchanger. After heat exchange, the temperature of the indoor air in the second heat exchanger rises to 32.1℃ and is then discharged outdoors; the temperature of the air inside the dryer drops to 33.0℃.

[0162] S12: Refrigeration

[0163] The refrigerator contains a wet curtain. Low-humidity air blows through the wet curtain, and water continuously circulates up and down the wet curtain, lowering the air temperature to 20.1°C. The low-temperature air inside the refrigerator passes through the first heat exchanger, lowering the indoor air temperature from 28.0°C to 22.0°C, and is then discharged into the room, thus reducing the indoor temperature.

[0164] The heat of the clean water is removed by using a third heat exchanger. Specifically, cold water at 10-20°C is introduced into the third heat exchanger for cooling. After heat exchange, the water temperature in the cooler drops from 21.2°C to 17-18°C.

[0165] S13: Internal Circulation

[0166] After the low-humidity air is blown away by the clean water, the air humidity increases to 50-60%, and then it enters the dryer again to start the next cycle.

[0167] S14: Regeneration of moisture-absorbing materials

[0168] The silica gel desiccant inside the dryer absorbs a certain amount of water after working continuously for 1-2 hours. Then, the infrared heater is turned on, releasing water vapor, which is discharged outdoors at a temperature of 100-120℃. At the same time, the regenerated silica gel is obtained and used to absorb moisture from the air again.

[0169] The infrared heating power is 500 watts, heating for 5 minutes, consuming 41.7 Wh of electricity. In an indoor space of 20 square meters with a ceiling height of 3 meters, the temperature dropped from 28.0℃ to 22.0℃, with a cooling capacity of 464.40 kJ, equivalent to 129.0 Wh of cooling. The cooling efficiency of this invention is 3.09. If other fans and system power (6.8 Wh) are added, the cooling efficiency becomes 2.66.

[0170] Implementation Case 7: Zeolite Desiccant Enhanced Direct Evaporation Refrigeration

[0171] S21: Reduce humidity

[0172] Inside the dryer, zeolite, a moisture-absorbing material, is used to absorb water from the air, reducing the humidity of the air to 10-20%, thus obtaining low-humidity air.

[0173] Tests showed that with an ambient temperature of 35.0℃ and an air humidity of 80%, the humidity decreased to 20% and the temperature increased to 45℃ after the zeolite absorbed water.

[0174] Water is introduced into the second heat exchanger located in the drying chamber. After heat exchange, the air temperature inside the dryer drops to 37°C.

[0175] S22: Refrigeration

[0176] The low-humidity air obtained in step S1 is used to blow clean water into the refrigerator. The refrigerator contains a wet curtain. The low-humidity air blows the wet curtain, and the water in the wet curtain circulates continuously up and down, increasing the contact area between the air and water. The clean water temperature is as low as 21 degrees Celsius, and the air temperature drops to as low as 23.3 degrees Celsius. The air is then discharged into the room to lower the indoor temperature.

[0177] S23: Regeneration of moisture-absorbing materials

[0178] After the zeolite desiccant inside the dryer absorbs a certain amount of water during continuous operation for 1-2 hours, the microwave heating system is turned on, releasing the water vapor and venting it outdoors.

[0179] Microwave heating at 500 watts for 9 minutes consumes 75.0 Wh of electricity. In an indoor space of 20 square meters with a ceiling height of 3 meters, the temperature dropped from 33°C to 23.3°C, with a cooling capacity of 905.6 kJ, equivalent to 251.5 Wh of cooling. This embodiment achieves a cooling efficiency of 3.35, reaching Level 3 energy efficiency. This embodiment also includes a system energy consumption of 6.8 Wh, with a cooling efficiency of 3.07, still higher than the efficiency of single-effect and double-effect lithium bromide cooling.

[0180] Throughout this specification, references to "an example," "an embodiment," or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment. Therefore, the appearance of "an example," "an embodiment," or "an embodiment" in various places throughout this specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0181] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A refrigeration device, characterized in that, Includes fluid-connected dryers and refrigerators; The dryer is used to absorb moisture from the air using a moisture-absorbing material to reduce the humidity of the air and obtain low-humidity air. The cooler is used to exchange heat between the low-humidity air generated in the dryer and clean water to reduce the temperature and increase the humidity of the low-humidity air, thereby obtaining low-temperature and high-humidity air. It also includes a first heat exchanger disposed within the refrigerator, the first heat exchanger being used to exchange heat between the low-temperature, high-humidity air inside the refrigerator and the indoor air.

2. The refrigeration device according to claim 1, characterized in that, The refrigerator has a high humidity air outlet, and the dryer has a high humidity air inlet. The high humidity air outlet of the refrigerator is in fluid communication with the high humidity air inlet of the dryer through a pipe.

3. The refrigeration device according to claim 1 or 2, characterized in that, The refrigerator is equipped with a wet curtain and a liquid circulation pump for delivering clean water to the wet curtain. Preferably, it also includes a fan or blower for blowing the low-humidity air onto the wet curtain inside the cooler.

4. The refrigeration apparatus according to any one of claims 1-3, characterized in that, The refrigeration device also includes a heater, which is used to heat and regenerate the moisture-absorbing material inside the dryer after it has absorbed water.

5. The refrigeration apparatus according to any one of claims 1-4, characterized in that, The refrigeration device further includes a second heat exchanger, which is used to exchange heat between the heat-releasing air in the dryer and the indoor air or cold water, so that the heat of the air in the dryer is transferred to the indoor air or cold water to maintain the air temperature within a certain range.

6. The refrigeration apparatus according to any one of claims 1-5, characterized in that, The refrigeration device also includes a third heat exchanger, which is used to exchange heat between the clean water in the refrigeration unit and the indoor air or cold water, so that the heat of the clean water in the refrigeration unit is transferred to the indoor air or cold water to maintain the temperature of the clean water within a certain range.

7. A refrigeration device, characterized in that, Including fluid-connected dryers and coolers: The dryer is used to absorb moisture from the air using a moisture-absorbing material to reduce the humidity of the air and obtain low-humidity air. The cooler is used to exchange heat between the low-humidity air generated in the dryer and clean water to lower the temperature of the low-humidity air, thereby obtaining low-temperature air, which is then discharged into the room.

8. The refrigeration device according to claim 7, characterized in that, The refrigerator is equipped with a wet curtain and a liquid circulation pump for delivering clean water to the wet curtain. Preferably, it also includes a fan or blower for blowing the low-humidity air onto the wet curtain inside the cooler.

9. The refrigeration device according to claim 7 or 8, characterized in that, The refrigeration device also includes a heater, which is used to heat and regenerate the moisture-absorbing material inside the dryer after it has absorbed water.

10. The refrigeration apparatus according to any one of claims 7-9, characterized in that, The refrigeration device further includes a second heat exchanger, which is used to exchange heat between the heat-releasing air in the dryer and the indoor air or cold water, so that the heat of the air in the dryer is transferred to the indoor air or cold water to maintain the air temperature within a certain range.

11. The refrigeration apparatus according to any one of claims 7-10, characterized in that, The refrigeration device also includes a third heat exchanger, which is used to exchange heat between the clean water in the refrigeration unit and the indoor air or cold water, so that the heat of the clean water in the refrigeration unit is transferred to the indoor air or cold water to maintain the temperature of the clean water within a certain range.

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