A solution dehumidifier

Abstract

The present invention discloses a solution dehumidifier. It includes a dehumidification channel and a regeneration channel. The dehumidification channel is provided with a surface cooler, an evaporator, and a dehumidification solution module. The regeneration channel is provided with a heater and a regeneration solution module. The dehumidification solution module is provided with a dehumidification solution distributor, a dehumidification filler, and a dehumidification solution tank. The bottom of the dehumidification solution tank is connected to the dehumidification solution distributor via a dehumidification solution pipeline, a dehumidification solution pump, and a solution cooler. The regeneration solution module is provided with a regeneration solution distributor, a regeneration filler, and a regeneration solution tank. The bottom of the regeneration solution tank is connected to the regeneration solution distributor via a regeneration solution pipeline, a regeneration solution pump, a solution heater, and a condenser. The bottom of the regeneration solution tank is connected to the bottom of the dehumidification solution tank via a connecting pipe. The present invention greatly reduces the energy consumption of the unit, does not require water replenishment, reduces the dehumidification load of the dehumidification solution, reduces the volume of the unit, utilizes a high-temperature cold source, improves the energy efficiency ratio of the unit, and saves energy and reduces consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of solution dehumidifiers, in particular to a solution dehumidifier. Background Art

[0002] Solution dehumidification utilizes the hygroscopic properties of certain solutions to absorb moisture from the air, achieving a dehumidifying effect. The concentration of the solution after dehumidification decreases. If continued dehumidification is required, the solution must be regenerated to increase its concentration.

[0003] One existing method uses steam to heat and regenerate the solution, using fresh air as regeneration air. This air absorbs moisture from the solution, increasing its concentration, and is then discharged directly outdoors. Steam, as a high-quality heat source, consumes a lot of energy and is therefore very uneconomical.

[0004] The second existing method is to use a low-temperature heat source such as heat pump exhaust heat to heat the solution. The condenser of the refrigeration system is used as the heat source of the solution regenerator, and the evaporator of the refrigeration system is used as the cold source of the solution dehumidifier. The latent heat released during the dehumidification process of the cooling solution, because the condensation heat of the refrigeration system is greater than the cooling capacity of the system, causes a mismatch in the cold and heat amount of the solution system. Generally, softened water is added to the solution on the solution regeneration side, and the evaporation of water is used to remove the excess condenser. The solution system was originally used for dehumidification, but now water needs to be added to the solution system, which is neither energy-saving nor contrary to the original intention of the system design.

[0005] Therefore, solving the problems of high energy consumption, large volume and need for water replenishment in solution dehumidification systems has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The purpose of the present invention is to address the deficiencies in the prior art and provide a solution dehumidifier that is a composite of a high-temperature cold source, a low-grade heat source, a compression refrigeration system and a solution system, thereby making full use of the high-temperature cold source and the low-grade heat source to solve the problems of high energy consumption, large size and the need for water replenishment of the solution dehumidification unit.

[0007] To achieve the above-mentioned objectives, the present invention provides a solution dehumidifier, comprising a dehumidification channel and a regeneration channel, wherein a surface cooler, an evaporator and a dehumidification solution module are sequentially provided in the dehumidification channel along the air flow direction, and a heater and a regeneration solution module are sequentially provided in the regeneration channel along the air flow direction, and a dehumidification solution liquid distributor, a dehumidification filler and a dehumidification solution tank are sequentially provided inside the dehumidification solution module from top to bottom, and the bottom of the dehumidification solution tank is connected to the dehumidification solution liquid distributor through a dehumidification solution pipeline, a dehumidification solution pump and a solution cooler, and a regeneration solution liquid distributor, a regeneration filler and a regeneration solution tank are sequentially provided inside the regeneration solution module from top to bottom, and the bottom of the regeneration solution tank is connected to the regeneration solution liquid distributor through a regeneration solution pipeline, a regeneration solution pump, a solution heater and a condenser, and the regeneration solution pump and the solution heater are connected to the bottom of the dehumidification solution tank through a bypass solution pipeline, an expansion valve and a compressor are connected between the evaporator and the condenser, and a dehumidification fan and a regeneration fan are respectively provided in the dehumidification channel and the regeneration channel.

[0008] Furthermore, the precooler and the solution cooler are respectively connected to a high-temperature cooling source.

[0009] Furthermore, the heater and the solution heater are respectively connected to a low-grade heat source.

[0010] Furthermore, the high-temperature cold source is 14 to 19°C chilled water.

[0011] Furthermore, the low-grade heat source is hot water at 40 to 45°C.

[0012] Furthermore, flow regulating valves are provided between the precooler and the solution cooler and the high-temperature cold source, and between the heater and the solution heater and the low-grade heat source.

[0013] Furthermore, the dehumidification fan and the regeneration fan are respectively arranged on the front side of the surface cooler and the heater.

[0014] Beneficial effects: The solution circulation heating pipeline of the solution regeneration module of the present invention passes through the solution heater of the low-grade heat source and the condenser of the compression refrigeration system in sequence, thereby utilizing the temperature gradient of the low-grade heat source and the condensation heat of the compression refrigeration system to heat the regenerated solution in sequence. In this way, the heat of the low-grade heat source is fully utilized, and the required regeneration temperature is met, which greatly reduces the energy consumption of the unit; and because the heat of the low-grade heat source can be controlled by flow regulation, there is no imbalance of cold and heat between the dehumidification solution side and the regeneration solution side, so the unit does not need to be replenished with water.

[0015] In addition, the dehumidified air passes through the surface cooler of the high-temperature cold source and the evaporator of the compression refrigeration system in turn, and the dehumidified air is initially cooled and dehumidified, which reduces the dehumidification load of the dehumidification solution, reduces the volume of the solution module, and thus reduces the volume of the unit; at the same time, the high-temperature cold source is used to improve the energy efficiency ratio of the unit, saving energy and reducing consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a schematic structural diagram of a solution dehumidifier according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0018] like Figure 1 As shown, an embodiment of the present invention provides a solution dehumidifier, including a dehumidification channel and a regeneration channel. A surface cooler 12, an evaporator 13 and a dehumidification solution module are sequentially provided in the dehumidification channel along the airflow direction. A heater 8 and a regeneration solution module are sequentially provided in the regeneration channel along the airflow direction. Specifically, a dehumidification solution distributor 17, a dehumidification filler 16 and a dehumidification solution tank 15 are sequentially provided inside the dehumidification solution module from top to bottom. The bottom of the dehumidification solution tank 15 is connected to the dehumidification solution distributor 17 via a dehumidification solution pipeline 400, a dehumidification solution pump 14 and a solution cooler 18. A regeneration solution distributor 4, a regeneration filler 5 and a regeneration solution tank 6 are sequentially provided inside the regeneration solution module from top to bottom. The bottom of the regeneration solution tank 6 is connected to the regeneration solution distributor 4 via a regeneration solution pipeline 200, a regeneration solution pump 7, a solution heater 2 and a condenser 3. The regeneration solution pump 7 is connected to the solution heater 2 via a bypass solution line 500 and the bottom of the dehumidification solution tank 15. The bottom of the regeneration solution tank 6 is connected to the bottom of the dehumidification solution tank 15 via a connecting pipe 300. The regeneration solution tank 6 and the dehumidification solution tank 15 are arranged on the same horizontal plane. When the regeneration solution pump 7 pumps the solution from the regeneration solution tank 6 into the dehumidification solution tank 15, the solution in the dehumidification solution tank 15 automatically returns to the regeneration solution tank 6 through the connecting pipe 300. An expansion valve 10 and a compressor 1 are connected between the evaporator 12 and the condenser 3, forming a compression refrigeration system. A dehumidification fan 11 and a regeneration fan 9 are respectively provided in the dehumidification channel and the regeneration channel. In terms of airflow direction, the dehumidification fan 11 is preferably located in front of the surface cooler 12, and the regeneration fan 9 is preferably located in front of the heater 8.

[0019] The precooler 12 and solution cooler 18 of the embodiment of the present invention are preferably each connected to a high-temperature cooling source. Thus, the precooler 12 uses the high-temperature cooling source to precool the dehumidified air, and the solution cooler 18 uses the high-temperature cooling source to cool the dehumidified solution, thereby reducing the water vapor partial pressure of the dehumidified solution and improving the dehumidification effect. The high-temperature cooling source connected to the precooler 12 and solution cooler 18 can be 14-19°C chilled water, or, for some high-temperature applications, 30-35°C cooling water, or water from a natural source.

[0020] In the embodiment of the present invention, heater 8 and solution heater 2 are preferably each connected to a low-grade heat source. This low-grade heat source heats the dehumidification solution, increasing the water vapor partial pressure of the regenerated solution and improving the solution regeneration effect. The low-grade heat source is preferably hot water at 40 to 45°C, which can be hot water recovered from a chiller or industrial waste water.

[0021] A regulating valve is preferably provided on the pipeline connected to the high-temperature cooling source of the solution cooler 18 to ensure that the solution in the dehumidification solution tank is cooled to the required temperature, and the outlet temperature and humidity of the dehumidified air are maintained, thereby avoiding energy waste. A regulating valve is also preferably provided on the pipeline connected to the low-grade heat source of the solution heater 2 to ensure that the solution in the regeneration solution tank is heated to the required temperature, thereby avoiding energy waste and preventing the need for water replenishment due to heat imbalance in the unit. Regulating valves are also preferably provided on the pipeline connected to the high-temperature cooling source of the surface cooler 12 and the pipeline connected to the low-grade heat source of the heater 8.

[0022] Working Principle: The high-temperature concentrated solution in the regeneration solution tank 6 is fed by the solution pump 7 into the solution heater 2, where it is preheated. The solution then enters the compression refrigeration system's condenser 3, where it is further heated. It then flows through the regeneration solution distributor 4 and into the regeneration packing 5, where the moisture in the solution is transferred to the regeneration air introduced by the regeneration blower 9, resulting in a concentrated solution. A portion of the concentrated solution flows through the regeneration solution pump 7 and the bypass solution line 500 into the dehumidification solution tank 15, where it mixes with the dilute solution in the dehumidification solution tank 15. The solution then flows through the dehumidification solution pump 14 into the solution cooler 18, where it is cooled. The solution then flows through the dehumidification solution distributor 17 into the dehumidification packing 16, where it absorbs moisture from the dehumidified air and becomes a dilute solution, completing the solution cycle.

[0023] Dehumidified air is sent by the dehumidification fan 11 through the surface cooler 12, which is connected to a high-temperature cooling source, for initial cooling and dehumidification. It then enters the evaporator 13 of the compression refrigeration system for further cooling and dehumidification. It then enters the dehumidifying packing 16 in the dehumidifying solution tank 15, where it is further dehumidified and temperature-controlled, transforming into low-temperature, dry dehumidified air for delivery. Since the dehumidified air is cooled and dehumidified by the surface cooler 12 and evaporator 13 before entering the dehumidifying solution module for dehumidification, the dehumidification capacity of the dehumidifying solution module is reduced, thereby reducing the volume of the dehumidifying solution and energy consumption. Consequently, the volume and energy consumption of the regeneration module are also reduced.

[0024] The above description is merely a preferred embodiment of the present invention. It should be noted that any other aspects not specifically described are considered prior art or common knowledge to those skilled in the art. Improvements and modifications may be made without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A solution dehumidifier, characterized in that: The dehumidification device comprises a dehumidification channel and a regeneration channel, wherein a surface cooler, an evaporator and a dehumidification solution module are sequentially provided in the dehumidification channel along the air flow direction, a heater and a regeneration solution module are sequentially provided in the regeneration channel along the air flow direction, a dehumidification solution liquid distributor, a dehumidification filler and a dehumidification solution tank are sequentially provided inside the dehumidification solution module from top to bottom, the bottom of the dehumidification solution tank is connected to the dehumidification solution liquid distributor through a dehumidification solution pipeline, a dehumidification solution pump and a solution cooler, the regeneration solution module is sequentially provided with a regeneration solution liquid distributor, a regeneration filler and a regeneration solution tank from top to bottom, the bottom of the regeneration solution tank is connected to the regeneration solution liquid distributor through a regeneration solution pipeline, a regeneration solution pump, a solution heater and a condenser, the regeneration solution pump and the solution heater are connected to the bottom of the dehumidification solution tank through a bypass solution pipeline, the bottom of the regeneration solution tank is connected to the bottom of the dehumidification solution tank through a connecting pipe, an expansion valve and a compressor are connected between the evaporator and the condenser, and a dehumidification fan and a regeneration fan are respectively provided in the dehumidification channel and the regeneration channel; The surface cooler and the solution cooler are respectively connected to a high-temperature cooling source; The heater and the solution heater are respectively connected to a low-grade heat source; Flow regulating valves are provided between the surface cooler and the solution cooler and the high-temperature cold source, and between the heater and the solution heater and the low-grade heat source.

2. The solution dehumidifier according to claim 1, characterized in that: The high-temperature cold source is 14 to 19° C. chilled water.

3. The solution dehumidifier according to claim 1, characterized in that: The low-grade heat source is hot water at 40 to 45°C.

4. The solution dehumidifier according to claim 1, characterized in that: The dehumidification fan and the regeneration fan are respectively arranged at the front sides of the surface cooler and the heater.

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