Lithium chloride dehumidification fresh air heat exchange energy-saving device

Abstract

The utility model discloses lithium chloride dehumidification fresh air heat exchange energy -conserving device, including support platform, the upper surface fixed mounting of support platform has the support seat, the upper surface fixed mounting of support seat has the air inlet cover, the inner wall fixed mounting of air inlet cover has the air draught fan, the inside of air inlet cover is provided with the filter component, one side of air inlet cover fixed communication has the communicating pipe, the upper surface fixed mounting of support platform has the dehumidification cylinder. The utility model discloses through the primary filter screen and high -efficient filter screen in filter component, can intercept dust impurity of different particle size layer by layer, can reduce the pollutant from the source into the dehumidification cylinder, through the circulation pump, the liquid suction pipe, the liquid discharge pipe etc. Structure arrangement, the lithium chloride solution after adsorbing moisture gathers at the bottom of dehumidification cylinder, is pumped back by the circulation pump through the liquid suction pipe and is transported to the spray head again and is used circularly, and the liquid injection pipe only needs to supplement a small amount of loss solution, realizes the efficient use of resources, solves the problem of lithium chloride solution recycling loss.

Description

Technical Field

[0001] This application relates to the field of fresh air treatment technology, and in particular to a lithium chloride dehumidification fresh air heat exchange energy-saving device. Background Technology

[0002] Lithium chloride dehumidifiers are widely used in civil buildings, industrial plants, data centers, and other scenarios with strict requirements for indoor temperature and humidity. The core requirement in this field is to optimize energy consumption in the fresh air treatment process through efficient dehumidification and heat exchange technology, while ensuring indoor air quality. Due to its strong hygroscopic properties, lithium chloride is widely used in adsorption dehumidification technology, and a dehumidification fresh air heat exchange device has been developed based on it.

[0003] However, current lithium chloride dehumidification still has shortcomings: First, the fresh air pretreatment capacity is insufficient. Fresh air often carries dust, impurities, and fluctuating temperature and humidity loads before entering the adsorption system. Direct contact with the lithium chloride adsorption layer can easily lead to adsorbent clumping and blockage, reducing adsorption efficiency and service life. Second, there is a lack of lithium chloride solution recycling mechanism. After spray dehumidification, the lithium chloride solution in the liquid adsorption layer is mostly directly discharged, which will cause resource waste and is difficult to recycle. Therefore, to solve the above problems, we provide a lithium chloride dehumidification fresh air heat exchange energy-saving device. Utility Model Content

[0004] The purpose of this invention is to provide a lithium chloride dehumidification fresh air heat exchange energy-saving device to solve the problems mentioned in the background art, namely, that fresh air often carries dust, impurities and fluctuating temperature and humidity loads before entering the adsorption system, which can easily lead to adsorbent clumping and blockage when directly contacting the lithium chloride adsorption layer, thus reducing adsorption efficiency and service life; secondly, the lack of a lithium chloride solution recycling mechanism, where the lithium chloride solution in the lithium chloride adsorption layer is mostly directly discharged after spray dehumidification, which will cause resource waste and make it difficult to recycle and reuse.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] A lithium chloride dehumidification and fresh air heat exchange energy-saving device includes a support platform. A support base is fixedly installed on the upper surface of the support platform. An air inlet hood is fixedly installed on the upper surface of the support base. An induced draft fan is fixedly installed on the inner wall of the air inlet hood. A filter assembly is installed inside the air inlet hood. A connecting pipe is fixedly connected to one side of the air inlet hood. A dehumidification cylinder is fixedly installed on the upper surface of the support platform. One end of the connecting pipe passes through the dehumidification cylinder and extends into the interior of the dehumidification cylinder. An exhaust plate is fixedly connected to one end of the connecting pipe. Lithium chloride liquid adsorption layers are fixedly installed on the inner wall of the dehumidification cylinder. The exhaust plate is located below the lithium chloride liquid adsorption layers. A circulation pump is fixedly installed on the upper surface of the support platform. A drain pipe is fixedly connected to the output end of the circulation pump. One end of the drain pipe passes through the dehumidification cylinder and extends above the lithium chloride liquid adsorption layers. A series of annularly arranged drain branch pipes are fixedly connected to one end of each drain branch pipe. A nozzle is fixedly connected to one side of the dehumidification cylinder. A plate heat exchanger and a high-efficiency filter are respectively installed on one side.

[0007] Preferably, the filter assembly includes a threaded connecting cover threadedly connected to the outer surface of the air inlet cover, a threaded inner cover fixedly connected to the inner wall of the threaded connecting cover, a filter cover threadedly connected to the inner wall of the threaded inner cover, a pre-filter and a high-efficiency filter respectively installed on the inner wall of the filter cover, and an air inlet grille fixedly connected to the inner wall of the threaded connecting cover.

[0008] Preferably, an exhaust pipe is fixedly connected to the upper surface of the dehumidification cylinder, one end of the exhaust pipe is fixedly connected to the air inlet of the plate heat exchanger, the output end of the plate heat exchanger is fixedly connected to a heat exchange discharge pipe, and one end of the heat exchange discharge pipe is fixedly connected to the input end of the high-efficiency filter.

[0009] Preferably, the upper surface of the support platform is fixedly connected to two fixed support plates, and the two fixed support plates are fixedly installed on the outer surface of the plate heat exchanger on their adjacent sides. A fixed support is fixedly connected to one side of the support platform, and one side of the fixed support is fixedly connected to the bottom surface of the high-efficiency filter.

[0010] Preferably, the input end of the circulation pump is fixedly connected to a liquid extraction pipe, one end of which passes through the dehumidification cylinder and extends into the interior of the dehumidification cylinder. The outer surface of the dehumidification cylinder is fixedly connected to an injection pipe. A lithium chloride solid adsorption layer is installed inside the dehumidification cylinder, and a lithium chloride liquid adsorption layer is located below the lithium chloride solid adsorption layer.

[0011] Preferably, a controller is fixedly installed on the upper surface of the support platform.

[0012] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0013] 1. This lithium chloride dehumidifying fresh air heat exchange energy-saving device, through the primary filter and high-efficiency filter in the filter assembly, can intercept dust and impurities of different particle sizes layer by layer, reducing pollutants entering the dehumidification cylinder from the source. At the same time, the exhaust plate evenly disperses the pre-treated fresh air below the lithium chloride liquid adsorption layer. Combined with the uniform lithium chloride solution sprayed from the nozzle, it achieves full gas-liquid contact adsorption. The subsequent secondary dehumidification of the lithium chloride solid adsorption layer further ensures the stability of the dehumidification effect, avoids the influence of load fluctuation on adsorption efficiency, reduces the risk of adsorbent agglomeration, extends its service life, and solves the problem of adsorbent agglomeration and blockage caused by dust and impurities carried by fresh air and temperature and humidity fluctuations in traditional devices.

[0014] 2. This lithium chloride dehumidifying fresh air heat exchange and energy-saving device, through its structure including a circulating pump, a liquid extraction pipe, and a liquid discharge pipe, collects the lithium chloride solution at the bottom of the dehumidifying cylinder after absorbing moisture. The solution is then drawn back by the circulating pump through the liquid extraction pipe and re-transported to the nozzles for reuse. The liquid injection pipe only needs to replenish a small amount of lost solution, achieving efficient resource utilization and solving the problem of insufficient lithium chloride solution recycling. This facilitates the recycling of the lithium chloride solution. Simultaneously, the dehumidified fresh air enters the plate heat exchanger through the exhaust pipe, exchanging heat with the indoor exhaust gas to be discharged. The heat from the exhaust gas is then recovered and sent into the room through a high-efficiency filter, reducing energy consumption during the fresh air treatment process. This achieves the dual benefits of resource conservation and energy saving while ensuring indoor air quality. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 See: A three-dimensional structural diagram of the lithium chloride dehumidification fresh air heat exchange and energy-saving device of this utility model from the front view;

[0017] Figure 2 See: A frontal cross-sectional view of the lithium chloride dehumidification fresh air heat exchange and energy-saving device of this utility model;

[0018] Figure 3 See: A front-view cross-sectional view of the dehumidification cylinder in the lithium chloride dehumidification fresh air heat exchange energy-saving device of this utility model;

[0019] Figure 4 See: A bottom-view cross-sectional view of the dehumidification cylinder in the lithium chloride dehumidification fresh air heat exchange energy-saving device of this utility model;

[0020] Figure 5 See: A frontal cross-sectional view of the filter component in the lithium chloride dehumidification fresh air heat exchange and energy-saving device of this utility model.

[0021] In the diagram: 1. Support platform; 2. Support base; 3. Air inlet hood; 4. Filter assembly; 41. Filter cover; 42. Pre-filter; 43. High-efficiency filter; 44. Threaded connection cover; 45. Threaded inner cover; 46. Air inlet grille; 5. Dehumidifier cylinder; 6. Exhaust pipe; 7. Circulation pump; 8. Drain pipe; 9. Drain branch pipe; 10. Lithium chloride liquid adsorption layer; 11. Lithium chloride solid adsorption layer; 12. Connecting pipe; 13. Exhaust disc; 14. Exhaust fan; 15. Liquid injection pipe; 16. Plate heat exchanger; 17. Heat exchange discharge pipe; 18. High-efficiency filter; 19. Fixed support; 20. Controller; 21. Nozzle; 22. Liquid extraction pipe; 23. Fixed support plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figures 1-5In this utility model, the lithium chloride dehumidification fresh air heat exchange energy-saving device includes a support platform 1, a support base 2 fixedly installed on the upper surface of the support platform 1, an air inlet hood 3 fixedly installed on the upper surface of the support base 2, an exhaust fan 14 fixedly installed on the inner wall of the air inlet hood 3, a filter assembly 4 disposed inside the air inlet hood 3, a connecting pipe 12 fixedly connected to one side of the air inlet hood 3, a dehumidification cylinder 5 fixedly installed on the upper surface of the support platform 1, an electric heating wire disposed on the inner bottom wall of the dehumidification cylinder 5, which can heat and remove moisture from the lithium chloride liquid to maintain adsorption capacity, one end of the connecting pipe 12 penetrates through the dehumidification cylinder 5 and extends into the interior of the dehumidification cylinder 5, and one end of the connecting pipe 12 is fixedly connected to an exhaust plate 13, lithium chloride liquid adsorption layers 10 are fixedly installed on the inner wall of the dehumidification cylinder 5, the exhaust plate 13 is located below the lithium chloride liquid adsorption layers 10, a circulation pump 7 is fixedly installed on the upper surface of the support platform 1, and a drain pipe 8 is fixedly connected to the output end of the circulation pump 7. One end of the drain pipe 8 passes through the dehumidification cylinder 5 and extends above the lithium chloride liquid adsorption layer 10. One end of the drain pipe 8 is fixedly connected to a ring of drain branch pipes 9. Each drain branch pipe 9 is fixedly connected to a nozzle 21. A plate heat exchanger 16 and a high-efficiency filter 18 are respectively installed on one side of the dehumidification cylinder 5. Specifically, after the induced draft fan 14 is started, it can quickly guide the outside fresh air into the air inlet hood 3. The filter assembly 4 can intercept impurities in the fresh air in advance. Among them, the primary filter 42 filters large particles such as dust, and the high-efficiency filter 43 blocks small particles to prevent impurities from entering the subsequent structure and causing blockage. The connecting pipe 12 introduces the filtered fresh air into the dehumidification cylinder 5. The exhaust plate 13 makes the fresh air evenly distributed below the lithium chloride liquid adsorption layer 10 to increase the contact area. The circulation pump 7 delivers lithium chloride liquid to the drain pipe 8, which is evenly sprayed on the lithium chloride liquid adsorption layer 10 through the drain branch pipes 9 and the nozzles 21 to improve the dehumidification efficiency.

[0025] In a preferred embodiment, the filter assembly 4 includes a threaded connecting cover 44 threadedly connected to the outer surface of the air inlet hood 3, a threaded inner cover 45 fixedly connected to the inner wall of the threaded connecting cover 44, a filter cover 41 threadedly connected to the inner wall of the threaded inner cover 45, a pre-filter 42 and a high-efficiency filter 43 respectively installed on the inner wall of the filter cover 41, and an air inlet grille 46 fixedly connected to the inner wall of the threaded connecting cover 44. Specifically, the threaded connecting cover 44 is threadedly connected to the air inlet hood 3, and the threaded inner cover 45 is threadedly connected to the filter cover 41. This detachable structure facilitates the periodic disassembly of the filter cover 41 for cleaning or replacement of the pre-filter 42 and the high-efficiency filter 43, reducing maintenance difficulty and cost. The air inlet grille 46 can not only initially block larger debris such as leaves from entering, but also guide fresh air to enter the filter structure smoothly, avoiding damage to the filter caused by fresh air impact.

[0026] In a preferred embodiment, two fixed support plates 23 are fixedly connected to the upper surface of the support platform 1. The sides of the two fixed support plates 23 that are close to each other are fixedly installed on the outer surface of the plate heat exchanger 16. A fixed support 19 is fixedly connected to one side of the support platform 1. One side of the fixed support 19 is fixedly connected to the bottom surface of the high-efficiency filter 18. A controller 20 is fixedly installed on the upper surface of the support platform 1. Specifically, the fixed support plates 23 provide stable support for the plate heat exchanger 16, ensuring its stability during operation and preventing vibration from affecting heat exchange efficiency or causing structural damage. The fixed support 19 provides a stable installation foundation for the high-efficiency filter 18, ensuring its tight connection with the heat exchange discharge pipe 17. The controller 20 is a PLC that can adjust key parameters such as the speed of the induced draft fan 14, the heating temperature of the electric heating wire, and the operating status of the circulating pump 7. It can adjust the working mode according to the actual fresh air humidity and other requirements to improve energy saving effect, while facilitating operation and monitoring of the device's operating status by the staff.

[0027] In a preferred embodiment, an exhaust pipe 6 is fixedly connected to the upper surface of the dehumidification cylinder 5. One end of the exhaust pipe 6 is fixedly connected to the air inlet of the plate heat exchanger 16. A heat exchange discharge pipe 17 is fixedly connected to the output end of the plate heat exchanger 16. One end of the heat exchange discharge pipe 17 is fixedly connected to the input end of the high-efficiency filter 18. A liquid extraction pipe 22 is fixedly connected to the input end of the circulation pump 7. One end of the liquid extraction pipe 22 passes through the dehumidification cylinder 5 and extends into the interior of the dehumidification cylinder 5. A liquid injection pipe 15 is fixedly connected to the outer surface of the dehumidification cylinder 5. A lithium chloride solid adsorption layer 11 is installed inside the dehumidification cylinder 5, and a lithium chloride liquid adsorption layer 10 is located below the lithium chloride solid adsorption layer 11. Specifically, the lithium chloride solid adsorption layer 11 uses glass fiber filter paper as the substrate, impregnated with cured lithium chloride particles, and combined with multiple... A lithium chloride liquid adsorption layer 10, with porous ceramic as the carrier and loaded with lithium chloride solution, forms a secondary dehumidification layer to ensure that the humidity meets the standard. The exhaust pipe 6 can quickly introduce the dried fresh air treated in the dehumidification cylinder 5 into the plate heat exchanger 16. The plate heat exchanger 16 can recover the heat in the dried fresh air and exchange heat with the subsequent incoming fresh air or air to be discharged, realizing energy recovery and improving the energy efficiency of the device. The heat exchange exhaust pipe 17 introduces the heat-exchanged fresh air into the high-efficiency filter 18 to further filter impurities and ensure the cleanliness of the output fresh air. The liquid extraction pipe 22 provides a lithium chloride liquid extraction channel for the circulation pump 7, and the liquid injection pipe 15 facilitates the replenishment of new lithium chloride liquid. The lithium chloride solid adsorption layer 11 is located above the lithium chloride liquid adsorption layer 10 and can perform secondary dehumidification on the fresh air after liquid adsorption, improving the dehumidification effect.

[0028] The working principle of this utility model is as follows: Fresh air first enters the air inlet hood 3, and after being initially guided by the air inlet grille 46, it is pre-treated by the filter assembly 4. The primary filter 42 and the high-efficiency filter 43 in the filter hood 41 intercept dust and impurities layer by layer to avoid clogging of the subsequent adsorption layer. The exhaust fan 14 provides power so that the pre-treated fresh air is transported to the exhaust plate 13 in the dehumidification cylinder 5 through the connecting pipe 12 and evenly dispersed below the lithium chloride liquid adsorption layer 10. At the same time, the circulation pump 7 transports the lithium chloride solution to the drain branch pipe 9 through the drain pipe 8 and sprays it evenly on the lithium chloride liquid adsorption layer 10 through the nozzle 21. The fresh air comes into full contact with the sprayed lithium chloride solution, and the moisture is efficiently adsorbed. Then the fresh air rises and passes through the lithium chloride solid adsorption layer 11 for secondary dehumidification, further reducing the moisture content.

[0029] Heat exchange recovery and solution circulation process: After dehumidification, the fresh air enters the plate heat exchanger 16 through the exhaust pipe 6, where it exchanges heat with the indoor exhaust air to be discharged, recovering heat to achieve energy saving. Then, it enters the high-efficiency filter 18 for deep filtration through the heat exchange exhaust pipe 17 before being sent into the room. Regarding the solution recovery issue, the lithium chloride solution in the dehumidification cylinder 5 absorbs moisture and collects at the bottom. Then, it is drawn back by the circulation pump 7 through the liquid extraction pipe 22 and transported again to the spray nozzle 21 for circulating spraying through the liquid discharge pipe 8. The liquid injection pipe 15 can replenish the lost solution, forming a closed-loop recovery mechanism to avoid resource waste.

[0030] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail. In addition, the power supply module, circuit, electronic components and control module involved in this utility model are all existing technologies and can be fully implemented by those skilled in the art. There is no need to elaborate. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium chloride dehumidifying fresh air heat exchange energy-saving device, comprising a support platform (1), characterized in that: A support base (2) is fixedly installed on the upper surface of the support platform (1). An air inlet hood (3) is fixedly installed on the upper surface of the support base (2). An exhaust fan (14) is fixedly installed on the inner wall of the air inlet hood (3). A filter assembly (4) is provided inside the air inlet hood (3). A connecting pipe (12) is fixedly connected to one side of the air inlet hood (3). A dehumidifier cylinder (5) is fixedly installed on the upper surface of the support platform (1). One end of the connecting pipe (12) passes through the dehumidifier cylinder (5) and extends into the interior of the dehumidifier cylinder (5). An exhaust plate (13) is fixedly connected to one end of the connecting pipe (12). An exhaust plate (13) is fixedly installed on the inner wall of the dehumidifier cylinder (5). A lithium chloride liquid adsorption layer (10) is provided. The exhaust plate (13) is located below the lithium chloride liquid adsorption layer (10). A circulation pump (7) is fixedly installed on the upper surface of the support platform (1). The output end of the circulation pump (7) is fixedly connected to a drain pipe (8). One end of the drain pipe (8) passes through the dehumidification cylinder (5) and extends to the top of the lithium chloride liquid adsorption layer (10). One end of the drain pipe (8) is fixedly connected to a ring-shaped drain branch pipe (9). One end of each drain branch pipe (9) is fixedly connected to a nozzle (21). A plate heat exchanger (16) and a high-efficiency filter (18) are respectively provided on one side of the dehumidification cylinder (5).

2. The lithium chloride dehumidification fresh air heat exchange energy-saving device according to claim 1, characterized in that: The filter assembly (4) includes an air inlet cover (3) with a threaded connection cover (44) threaded to its outer surface, a threaded inner cover (45) fixedly connected to the inner wall of the threaded connection cover (44), a filter cover (41) threaded to the inner wall of the threaded inner cover (45), a primary filter (42) and a high-efficiency filter (43) respectively installed on the inner wall of the filter cover (41), and an air inlet grille (46) fixedly connected to the inner wall of the threaded connection cover (44).

3. The lithium chloride dehumidification fresh air heat exchange energy-saving device according to claim 1, characterized in that: The upper surface of the dehumidification cylinder (5) is fixedly connected to an exhaust pipe (6), one end of which is fixedly connected to the air inlet of the plate heat exchanger (16), and the output end of the plate heat exchanger (16) is fixedly connected to a heat exchange discharge pipe (17), one end of which is fixedly connected to the input end of the high-efficiency filter (18).

4. The lithium chloride dehumidification fresh air heat exchange energy-saving device according to claim 1, characterized in that: The upper surface of the support platform (1) is fixedly connected to two fixed support plates (23). The two fixed support plates (23) are fixedly installed on the outer surface of the plate heat exchanger (16) on their side closest to each other. A fixed support (19) is fixedly connected to one side of the support platform (1). One side of the fixed support (19) is fixedly connected to the bottom surface of the high-efficiency filter (18).

5. The lithium chloride dehumidification fresh air heat exchange energy-saving device according to claim 1, characterized in that: The input end of the circulating pump (7) is fixedly connected to a liquid extraction pipe (22). One end of the liquid extraction pipe (22) passes through the dehumidification cylinder (5) and extends into the interior of the dehumidification cylinder (5). The outer surface of the dehumidification cylinder (5) is fixedly connected to an injection pipe (15).

6. The lithium chloride dehumidification fresh air heat exchange energy-saving device according to claim 1, characterized in that: The dehumidifier cylinder (5) is equipped with a lithium chloride solid adsorption layer (11) inside, and a lithium chloride liquid adsorption layer (10) is located below the lithium chloride solid adsorption layer (11).

7. The lithium chloride dehumidification fresh air heat exchange energy-saving device according to claim 1, characterized in that: A controller (20) is fixedly installed on the upper surface of the support platform (1).

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