Calcium chloride solution heat pump regeneration apparatus

Abstract

This utility model discloses a calcium chloride solution heat pump regeneration device, comprising: an air duct, a circulating heat exchanger arranged between the air ducts, with an air-cooled heat exchanger and an evaporator connected to one side of the circulating heat exchanger, and a first condenser, a first-stage humidifier, a second condenser, and a second-stage humidifier connected to the other side of the air duct. A variable frequency fan is arranged on the side of the second-stage humidifier and connected via a pipe. This utility model further cools the humid air after it has been cooled by the air-cooled heat exchanger. After passing through the air-cooled heat exchanger, the humid air is cooled and dehumidified by the evaporator. The first-stage and second-stage humidifiers continuously transfer moisture from the calcium chloride solution to the air, where it is absorbed by the hot air. The moisture is then dehumidified by the evaporator and discharged, achieving the concentration and regeneration of the calcium chloride solution. Using this calcium chloride solution heat pump regeneration device for production significantly reduces energy consumption and achieves remarkable energy-saving effects.

Description

Technical Field

[0001] This utility model relates to the field of calcium chloride solution heat pump regeneration technology, and more specifically to a calcium chloride solution heat pump regeneration device. Background Technology

[0002] Calcium chloride solution has a low freezing point and is used as a refrigerant or antifreeze in many fields such as chemical and food industries. The freezing point of calcium chloride solution of different concentrations can be reduced from 0℃ to -51℃.

[0003] In industrial production, the evaporation and concentration of calcium chloride solutions typically consumes a large amount of heat energy, usually provided by electric heating or high-temperature steam. This energy consumption is enormous and does not align with the current trend towards environmental protection and energy conservation. Therefore, a new technological solution is needed to address this issue. Utility Model Content

[0004] The purpose of this invention is to provide a heat pump regeneration device for calcium chloride solution, which solves the problem that the evaporation and concentration of calcium chloride solution in industrial production consumes a lot of heat energy. Usually, electric heating or high-temperature steam is used as the heat source, which consumes a lot of energy and does not conform to the current trend of environmental protection and energy conservation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a calcium chloride solution heat pump regeneration device, comprising: an air duct, a circulating heat exchanger arranged between the air ducts, and an air-cooled heat exchanger and an evaporator connected to one side of the circulating heat exchanger; a first condenser, a first-stage humidifier, a second condenser and a second-stage humidifier connected to the other side of the air duct; a variable frequency fan arranged on the side of the second-stage humidifier and connected through a pipe; and the circulating heat exchanger having a first circulating inlet, a first circulating outlet, a second circulating inlet and a second circulating outlet.

[0006] In a preferred embodiment of this utility model, the first condenser, the primary humidifier, the second condenser, and the secondary humidifier are distributed at intervals.

[0007] In a preferred embodiment of this utility model, the evaporator, the first condenser, and the second condenser are connected to the same air duct.

[0008] In a preferred embodiment of this utility model, the output end of the evaporator is connected to the first circulation inlet of the circulating heat exchanger via a pipe, and the first circulation outlet of the circulating heat exchanger is connected to the first condenser.

[0009] In a preferred embodiment of this utility model, the output end of the variable frequency fan is connected to the second circulation inlet of the circulating heat exchanger through a pipe, and the second circulation outlet of the circulating heat exchanger is connected to the air-cooled heat exchanger through a duct.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention features a circulating heat exchanger installed between air ducts, with an air-cooled heat exchanger and an evaporator connected to one side of the circulating heat exchanger. On the other side of the air duct are a first condenser, a primary humidifier, a second condenser, and a secondary humidifier. A variable frequency fan is installed on the side of the secondary humidifier and connected via a pipe. The circulating heat exchanger has a first circulation inlet, a first circulation outlet, a second circulation inlet, and a second circulation outlet. The output end of the evaporator is connected to the first circulation inlet of the circulating heat exchanger via a pipe, and the first circulation outlet of the circulating heat exchanger is connected to the first condenser. The output end of the variable frequency fan is connected to the second circulation inlet of the circulating heat exchanger via a pipe, and the second circulation outlet of the circulating heat exchanger is connected to the air-cooled heat exchanger via the air duct. This forms a calcium chloride solution heat pump regeneration cycle, with the air in the air duct cooled by the evaporator. The air is dehumidified and then enters a circulating heat exchanger for heat exchange and heating. The heated dry air then enters the first condenser through the first circulation outlet for a second heating to improve its moisture absorption capacity. After being humidified by a primary humidifier, it is heated again by a second condenser to further improve its moisture absorption capacity. Then, it is humidified again by a secondary humidifier. After passing through the secondary humidifier, the humid air is sent to the circulating heat exchanger by a variable frequency fan to exchange heat with cold air and cool down. The cooled humid air is further cooled by an air-cooled heat exchanger. After passing through the air-cooled heat exchanger, the humid air passes through an evaporator for cooling and dehumidification. The primary and secondary humidifiers continuously transfer moisture from the calcium chloride solution to the air, where it is absorbed by the hot air. After being dehumidified by the evaporator, the moisture is discharged, achieving the concentration and regeneration of the calcium chloride solution. The production process using a calcium chloride solution heat pump regeneration equipment greatly reduces energy consumption and has a significant energy-saving effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the equipment process structure of this utility model.

[0013] In the diagram: 1. Air duct; 2. Evaporator; 3. Air-cooled heat exchanger; 4. Circulating heat exchanger; 5. First condenser; 6. First-stage humidifier; 7. Second condenser; 8. Second-stage humidifier; 9. Variable frequency fan; 10. First circulation inlet; 11. First circulation outlet; 12. Second circulation inlet; 13. Second circulation outlet. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1 This utility model provides a technical solution: a calcium chloride solution heat pump regeneration device, comprising: an air duct 1, a circulating heat exchanger 4 arranged between the air ducts 1, with an air-cooled heat exchanger 3 and an evaporator 2 connected to one side of the circulating heat exchanger 4, and a first condenser 5, a first-stage humidifier 6, a second condenser 7, and a second-stage humidifier 8 connected to the other side of the air duct 1. A variable frequency fan 9 is arranged on the side of the second-stage humidifier 8 and connected to it via a pipe. The circulating heat exchanger 4 is provided with a first circulation inlet 10, a first circulation outlet 11, a second circulation inlet 12, and a second circulation outlet 13. A circulating heat exchanger 4 is installed between the air ducts 1 and 2. One side of the circulating heat exchanger 4 is connected to an air-cooled heat exchanger 3 and an evaporator 2. On the other side of the air duct 1, a first condenser 5, a first-stage humidifier 6, a second condenser 7, and a second-stage humidifier 8 are connected. A variable frequency fan 9 is installed on the side of the second-stage humidifier 8 and connected to it via a pipe. The circulating heat exchanger 4 has a first circulation inlet 10, a first circulation outlet 11, a second circulation inlet 12, and a second circulation outlet 13. The output end of the evaporator 2 is connected to the first circulation inlet 10 of the circulating heat exchanger 4 via a pipe. The first circulation outlet of the circulating heat exchanger 4... 11 is connected to the first condenser 5. The output end of the variable frequency fan 9 is connected to the second circulation inlet 12 of the circulating heat exchanger 4 through a pipe. The second circulation outlet 13 of the circulating heat exchanger 4 is connected to the air-cooled heat exchanger 3 through the air duct 1. Thus, a calcium chloride solution heat pump regeneration cycle is formed. The air in the air duct 1 is cooled and dehumidified by the evaporator 2, and then enters the circulating heat exchanger 4 for heat exchange and heating. The heated dry air enters the first condenser 5 through the first circulation outlet 11 for a second heating to improve the moisture absorption capacity. Then, after being humidified by the first-stage humidifier 6, it is heated again by the second condenser 7 to further improve the moisture absorption capacity. The first-stage humidifier 6 and the second-stage humidifier 8 humidify the air again. The humid air after passing through the second-stage humidifier 8 is sent to the circulating heat exchanger 4 by the variable frequency fan 9 to exchange heat with the cold air and cool down. The cooled humid air is further cooled by the air-cooled heat exchanger 3. After passing through the air-cooled heat exchanger 3, the humid air passes through the evaporator 2 for cooling and dehumidification. The first-stage humidifier 6 and the second-stage humidifier 8 continuously transfer the moisture in the calcium chloride solution to the air, where it is absorbed by the hot air. Then, it is dehumidified by the evaporator 2 and discharged, realizing the concentration and regeneration of the calcium chloride solution. The production using the calcium chloride solution heat pump regeneration equipment greatly reduces energy consumption and has a significant energy-saving effect.

[0016] Further improvements, such as Figure 1 As shown: the first condenser 5, the first-stage humidifier 6, the second condenser 7 and the second-stage humidifier 8 are distributed at intervals. The design of the interval distribution helps the air to be heated and humidified more evenly when flowing through each component, which improves the heat exchange efficiency and humidification effect, thereby enhancing the stability and performance of the entire system.

[0017] Further improvements, such as Figure 1As shown: The evaporator 2, the first condenser 5 and the second condenser 7 are connected to the same air duct 1. Connecting the evaporator 2, the first condenser 5 and the second condenser 7 to the same air duct 1 simplifies the system structure, reduces the use of pipes and connectors, reduces system complexity and cost, and at the same time improves the efficiency of air flow and the uniformity of heat transfer.

[0018] Further improvements, such as Figure 1 As shown: The output end of the evaporator 2 is connected to the first circulation inlet 10 of the circulating heat exchanger 4 through a pipe, and the first circulation outlet 11 of the circulating heat exchanger 4 is connected to the first condenser 5. This connection method ensures that the low-temperature humid air coming out of the evaporator 2 can directly enter the circulating heat exchanger 4 for preliminary heating, and then enter the first condenser 5 for further heating, which improves the utilization efficiency of thermal energy and reduces energy loss.

[0019] Further improvements, such as Figure 1 As shown: The output end of the variable frequency fan 9 is connected to the second circulation inlet 12 of the circulating heat exchanger 4 via a pipe. The second circulation outlet 13 of the circulating heat exchanger 4 is connected to the air-cooled heat exchanger 3 via a duct 1. By controlling the airflow through the variable frequency fan 9, the operating status of the system can be flexibly adjusted to adapt to different working requirements. Simultaneously, connecting the second circulation outlet 13 of the circulating heat exchanger 4 to the air-cooled heat exchanger 3 ensures that the humid air is sufficiently pre-cooled before entering the evaporator 2, improving the system's dehumidification efficiency and overall performance.

[0020] Working principle: The air in duct 1 first passes through evaporator 2, where it exchanges heat with the low-temperature refrigerant, lowering the air temperature. Water vapor condenses into water and is discharged, thus achieving air cooling and dehumidification. This effectively removes moisture from the air, providing a dry air foundation for subsequent humidification and heating processes, improving the system's dehumidification efficiency, and ensuring that the air entering subsequent stages has low humidity, which is beneficial for the concentration and regeneration of the calcium chloride solution. The cooled and dehumidified air enters circulating heat exchanger 4, where it exchanges heat with the humid air returning from the secondary humidifier 8, raising the air temperature. The heated, dry air then enters the first condenser 5 through the first circulation outlet 11, where it is further heated, increasing its moisture absorption capacity. Then, the air is humidified by the primary humidifier 6, heated by the secondary condenser 7 to further enhance its moisture absorption capacity, and finally humidified again by the secondary humidifier 8. Through multiple heating and humidification processes, the air reaches a high temperature and humidity, which is beneficial for absorbing moisture from the calcium chloride solution, enhancing the air's moisture absorption capacity, improving the concentration efficiency of the calcium chloride solution, and reducing energy consumption. The humid air after passing through the secondary humidifier 8 is sent to the circulating heat exchanger 4 by the variable frequency fan 9, where it exchanges heat with the cold air coming out of the evaporator 2, lowering the temperature of the humid air. The cooled humid air is then further cooled by the air-cooled heat exchanger 3, and then dehumidified again by the evaporator 2, expelling the absorbed moisture from the system. Through the pre-cooling and re-dehumidification process, the moisture in the humid air is effectively removed, achieving continuous concentration and regeneration of the calcium chloride solution, improving the overall dehumidification efficiency of the system, ensuring that the calcium chloride solution can stably reach the required concentration, and reducing energy consumption, meeting the requirements of environmental protection and energy conservation.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent 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 invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat pump regeneration device for calcium chloride solution, characterized in that: include: The air duct (1) is provided with a circulating heat exchanger (4) between the air ducts (1) and one side of the circulating heat exchanger (4) is connected to an air-cooled heat exchanger (3) and an evaporator (2). The other side of the air duct (1) is connected to a first condenser (5), a first-stage humidifier (6), a second condenser (7) and a second-stage humidifier (8). The side of the second-stage humidifier (8) is provided with a variable frequency fan (9) and connected to it through a pipe. The circulating heat exchanger (4) is provided with a first circulation inlet (10), a first circulation outlet (11), a second circulation inlet (12) and a second circulation outlet (13).

2. The calcium chloride solution heat pump regeneration equipment according to claim 1, characterized in that: The first condenser (5), the first-stage humidifier (6), the second condenser (7), and the second-stage humidifier (8) are distributed at intervals.

3. The calcium chloride solution heat pump regeneration equipment according to claim 1, characterized in that: The evaporator (2), the first condenser (5), and the second condenser (7) are connected to the same air duct (1).

4. The calcium chloride solution heat pump regeneration equipment according to claim 1, characterized in that: The output end of the evaporator (2) is connected to the first circulation inlet (10) of the circulating heat exchanger (4) through a pipe, and the first circulation outlet (11) of the circulating heat exchanger (4) is connected to the first condenser (5).

5. The calcium chloride solution heat pump regeneration equipment according to claim 1, characterized in that: The output end of the variable frequency fan (9) is connected to the second circulation inlet (12) of the circulating heat exchanger (4) through a pipe, and the second circulation outlet (13) of the circulating heat exchanger (4) is connected to the air-cooled heat exchanger (3) through the air duct (1).

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