A heat pump and dehumidification runner combined dehumidification module

Abstract

This utility model discloses a dehumidification module combining a heat pump and a dehumidification rotor, relating to the field of dehumidification equipment technology. The module includes a dehumidification rotor, a processing air channel, a regeneration air channel, and a heat pump system. The heat pump system includes a shared compressor and condenser, and a first evaporator and a second evaporator connected in parallel. The first evaporator is located in the processing air channel for pre-cooling and dehumidifying the processing air; the condenser is located in the regeneration air channel for heating the regeneration air; and the second evaporator is used to cool the high-temperature, high-humidity air flowing out of the desorption regeneration zone to recover energy. This utility model couples the heat pump system with the dehumidification rotor, effectively recovering condensation heat and waste energy from the exhaust gas within the system. The recovered heat is used for rotor regeneration, greatly reducing the energy consumption of regeneration heating and significantly improving the system's energy efficiency.

Description

Technical Field

[0001] This utility model relates to the field of dehumidification equipment technology, and more specifically, to a dehumidification module combining a heat pump and a dehumidification impeller. Background Technology

[0002] Rotary dehumidifiers, as a highly efficient and stable deep dehumidification technology, are widely used in industrial fields with strict humidity control, such as lithium battery production, pharmaceuticals, food processing, and electronics manufacturing. Their core working principle utilizes a honeycomb-shaped rotating wheel coated with adsorption material. Through alternating rotation, the wheel performs adsorption dehumidification of the treated air and heating desorption, thus achieving continuous dehumidification.

[0003] Despite the excellent performance of rotary dehumidifier technology, its biggest technical bottleneck lies in its extremely high regeneration energy consumption. To desorb the adsorbed moisture from the rotor, the regeneration air must be heated to a high temperature (typically 80–140°C). Traditional solutions generally use electric or gas heaters to accomplish this process, resulting in 70%–80% of the entire dehumidifier system's operating cost being consumed in regeneration heating. Against this backdrop, heat pump technology, with its ability to efficiently transfer heat from a low-temperature heat source to a high-temperature heat source using minimal electrical energy, has emerged as a potential solution to this problem.

[0004] However, how to innovatively couple a heat pump system with a dehumidifying rotor to construct an integrated dehumidification module that fundamentally solves the problem of efficient and low-cost acquisition of regenerated heat sources while simultaneously recovering and utilizing waste heat and cold from the system remains a pressing technical challenge. Therefore, providing a novel, highly efficient, and energy-saving dehumidification module that maintains the excellent dehumidification performance of the rotor while significantly reducing regeneration energy consumption has become a critical technical problem to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a dehumidification module that combines a heat pump with a dehumidification rotor, aiming to solve the problem of high regeneration energy consumption in existing rotor dehumidification technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A dehumidification module combining a heat pump and a dehumidification rotor includes: a dehumidification rotor divided into an adsorption treatment zone and a desorption regeneration zone; a treatment air flow path passing through the adsorption treatment zone; a regeneration air flow path passing through the desorption regeneration zone; and a heat pump system including a compressor, a condenser, a first evaporator, and a second evaporator; wherein the first evaporator and the second evaporator are connected in parallel to form two refrigeration branches, and the two refrigeration branches, together with the compressor and the condenser, constitute a refrigeration cycle; the first evaporator is disposed in the treatment air flow path and located upstream of the adsorption treatment zone; the condenser is disposed in the regeneration air flow path and located upstream of the desorption regeneration zone; and the second evaporator is disposed downstream of the desorption regeneration zone.

[0008] As can be seen, this utility model couples the heat pump system with the air flow path of the dehumidification impeller, uses the condenser of the heat pump system to preheat the regeneration air, uses the first evaporator to precool and dehumidify the processed air, and uses the second evaporator to recover the latent heat of condensation in the high-temperature and high-humidity air discharged after desorption and regeneration. This achieves the cascade utilization of energy within the system, recovers the energy wasted by direct emission in traditional solutions, and thus significantly reduces the operating energy consumption of the entire module.

[0009] Optionally, the heat pump system further includes a first throttling valve connected in series with the first evaporator and a second throttling valve connected in series with the second evaporator; the compressor, condenser, first throttling valve and first evaporator constitute a first refrigerant circuit; the compressor, condenser, second throttling valve and second evaporator constitute a second refrigerant circuit.

[0010] As can be seen, by setting up two parallel refrigerant circuits, the refrigerant flow into the two evaporators can be flexibly adjusted according to the temperature and humidity changes of the processed air and the regenerated exhaust air, thereby achieving precise control of the pre-cooling and waste heat recovery capabilities and ensuring that the system can operate efficiently and stably under different operating conditions.

[0011] Optionally, it also includes a regeneration heater, which is disposed in the regeneration air flow path and located between the condenser and the desorption regeneration zone.

[0012] It is evident that by adding a regeneration heater for supplementary heating on the basis of preheating the regeneration air by the condenser, the regeneration air can be ensured to reach the optimal temperature required for desorption, thus guaranteeing the regeneration efficiency and dehumidification performance stability of the dehumidification rotor.

[0013] Optionally, the air outlet of the second evaporator is connected to the inlet of the processing air flow path so as to introduce the air cooled and dehumidified by the second evaporator into the processing air flow path.

[0014] It is evident that by returning the regenerated waste gas, which has been cooled and dehumidified by the second evaporator, to the treatment air inlet, the cold energy is recovered and utilized. This further reduces the temperature and humidity of the treatment air before it enters the first evaporator, thereby reducing the dehumidification load on the first evaporator and the subsequent dehumidification rotor, achieving a synergistic energy-saving effect.

[0015] Optionally, the inlet for the processing airflow path also includes a fresh air inlet for introducing fresh air, so that the fresh air mixes with the air cooled and dehumidified by the second evaporator before entering the first evaporator.

[0016] As can be seen, this structure allows the system to replenish fresh air as needed while processing indoor recirculated air, thus meeting the fresh air volume requirements of the application site and improving indoor air quality.

[0017] Optionally, the inlet of the regenerated air flow path is connected to the outlet of the processed air flow path, so as to use a portion of the air dried in the adsorption treatment zone as regenerated air.

[0018] It is evident that using dried air as the regeneration gas source, due to its extremely low moisture content, can more efficiently remove moisture from the rotor after heating, thus improving regeneration efficiency.

[0019] Optionally, an adsorption fan is provided in the processing air flow path, and a regeneration fan is provided in the regeneration air flow path.

[0020] As can be seen, by setting up independent fans for the treatment airflow path and the regeneration airflow path respectively, the air volume and speed of the two airflows can be precisely controlled, which facilitates the debugging and optimization of the system to adapt to different dehumidification needs and environmental conditions.

[0021] Optionally, it also includes an adjustable speed motor connected to the dehumidification wheel drive.

[0022] It is evident that by using an adjustable speed motor to drive the dehumidification rotor, the rotor speed can be flexibly adjusted according to the actual wet load, thereby achieving dynamic adjustment of dehumidification capacity and avoiding energy waste under low load conditions.

[0023] Optionally, a medium-efficiency filter is also provided at the inlet of the airflow path.

[0024] It is evident that installing a medium-efficiency filter can effectively remove dust and other particulate matter from the treated air, protect the subsequent evaporator and dehumidification impeller from contamination and blockage, extend the service life of the equipment, and ensure the cleanliness of the output dry air. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0026] Figure 1 A schematic diagram of the structure of a dehumidification module combining a heat pump and a dehumidification impeller, provided for an embodiment of this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the refrigerant circulation in the heat pump system of the dehumidification module shown.

[0028] Figure 3 for Figure 1 The diagram shows the dehumidification rotor structure of the dehumidification module.

[0029] Explanation of reference numerals in the attached diagram: 1. Dehumidifying impeller; 2. Medium-efficiency filter; 3. Adsorption fan; 4. Regeneration heater; 5. Regeneration fan; 6. Condenser; 7. First evaporator; 8. Second evaporator; 9. Adjustable speed motor; 10. Compressor; 11. First throttle valve; 12. Second throttle valve; 101. Adsorption treatment zone; 102. Desorption and regeneration zone. Detailed Implementation

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0033] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0035] Please see Figures 1 to 3 This utility model provides a dehumidification module that combines a heat pump and a dehumidification impeller. The module includes a dehumidification impeller system and a heat pump system, which are coupled through an air flow path and a heat exchanger.

[0036] Specifically, the module includes a dehumidifying impeller 1, a medium-efficiency filter 2, an adsorption fan 3, a regeneration heater 4, a regeneration fan 5, and a heat pump system. The heat pump system includes a condenser 6, a first evaporator 7, a second evaporator 8, a compressor 10, a first throttle valve 11, and a second throttle valve 12.

[0037] The dehumidifying impeller 1 has a honeycomb structure inside and is coated with a highly efficient moisture-absorbing material. For example... Figure 3 As shown, the dehumidifying impeller 1 is divided into two sector-shaped areas by an internal partition: an adsorption treatment zone 101 and a desorption regeneration zone 102. The dehumidifying impeller 1 is driven by a variable speed motor 9 via a belt. The variable speed motor 9 drives the dehumidifying impeller 1 to rotate slowly at a set speed, so that each area of ​​the impeller circulates repeatedly through the adsorption treatment zone 101 and the desorption regeneration zone 102, thereby achieving a continuous and uninterrupted dehumidification process.

[0038] This module forms two relatively independent air circulation paths: the processing air flow path and the regeneration air flow path.

[0039] The airflow process is as follows: The air requiring dehumidification (e.g., a mixture of return air and some fresh air from the indoor space) first passes through a medium-efficiency filter 2 located at the inlet to remove particulate impurities. Then, the filtered air enters the first evaporator 7, which, as a cooling unit of the heat pump system, pre-cools and initially dehumidifies the air, reducing its temperature and moisture content. The pre-treated air then flows through the adsorption treatment zone 101 of the dehumidification rotor 1, where water molecules in the air are deeply adsorbed by the moisture-absorbing material on the rotor, resulting in dry, low-temperature air. Finally, this dry air is delivered out of the module by the adsorption fan 3 to supply the indoor space requiring a dry environment.

[0040] The regeneration airflow path operates as follows: A portion of the dry air flowing from the adsorption treatment zone 101 is drawn into the regeneration airflow path by the regeneration fan 5. This dry air first flows through the condenser 6 of the heat pump system, absorbing the heat released by the high-temperature refrigerant discharged from the compressor 10, and is preheated into high-temperature dry air. To achieve a higher regeneration temperature, the preheated air from the condenser 6 is further heated by the regeneration heater 4. The hot regeneration air, having reached the set temperature, then passes through the desorption regeneration zone 102 of the dehumidification rotor 1, releasing the moisture adsorbed by the rotor's absorbent material in the previous stage, thus regenerating the rotor. When the regenerated rotor rotates back into the adsorption treatment zone 101, it regains its moisture absorption capacity.

[0041] To recover energy, a high-temperature, high-humidity waste gas flows out of the desorption and regeneration zone 102. Before exiting the module, this waste gas passes through the second evaporator 8. The second evaporator 8, as another cooling unit of the heat pump system, forcibly cools this high-temperature, high-humidity waste gas, causing most of its water vapor to condense into water and be discharged, thus recovering a considerable amount of latent heat of vaporization. The air temperature is significantly reduced after cooling and dehumidification. This portion of air carrying cooling capacity is preferably guided to the inlet of the processing airflow path, mixed with fresh air, and then re-enters the first evaporator 7, thereby achieving the recycling of cooling capacity.

[0042] Please see Figure 2 The heat pump system employs a compressor 10 and a condenser 6, with a first evaporator 7 and a second evaporator 8 connected in parallel to form two refrigeration circuits. The first refrigerant circuit includes the compressor 10, condenser 6, first expansion valve 11, and first evaporator 7. The second refrigerant circuit includes the compressor 10, condenser 6, second expansion valve 12, and second evaporator 8. The working process is as follows: the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 10 enters the condenser 6, where it releases heat to the air flowing through the regeneration air path and condenses into a high-pressure liquid refrigerant. Subsequently, the high-pressure liquid refrigerant is divided into two paths, passing through the first expansion valve 11 and the second expansion valve 12 respectively, and after throttling and depressurization, becomes a low-temperature, low-pressure liquid refrigerant. These two low-temperature refrigerants flow into the first evaporator 7 and the second evaporator 8 respectively, where they absorb heat from the flowing air and evaporate into low-pressure gaseous refrigerant, which is then drawn into the compressor 10 for compression, completing the entire cycle. By adjusting the opening of the two throttle valves, the flow rates of the two refrigerants can be controlled, thereby distributing the cooling capacity as needed for the pre-cooling of the processed air and the waste heat recovery of the regenerated exhaust gas.

[0043] In summary, the dehumidification module combining a heat pump and a dehumidification rotor provided by this utility model cleverly integrates the evaporator and condenser of the heat pump system into the airflow path of the dehumidification rotor. The condenser provides most of the heat for rotor regeneration, while the dual evaporators pre-cool and dehumidify the processed air and recover heat from the regeneration waste gas, respectively. This achieves efficient cascade utilization and circulation of energy within the system, greatly reducing the high regeneration energy consumption of traditional rotor dehumidification schemes, and has significant energy-saving effects and economic benefits.

[0044] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A dehumidification module combining a heat pump and a dehumidification impeller, characterized in that, include: A dehumidifying impeller, which is divided into an adsorption treatment zone and a desorption regeneration zone; A processing airflow path passes through the adsorption treatment zone; A regenerated airflow path, the regenerated airflow path passing through the desorption regeneration zone; and A heat pump system, the heat pump system comprising a compressor, a condenser, a first evaporator and a second evaporator; The first evaporator and the second evaporator are connected in parallel to form two refrigeration branches, and the two refrigeration branches together with the compressor and the condenser constitute a refrigeration cycle. The first evaporator is disposed in the processing air flow path and located upstream of the adsorption processing zone; The condenser is disposed in the regeneration air flow path and is located upstream of the desorption regeneration zone; The second evaporator is located downstream of the desorption and regeneration zone.

2. The dehumidification module according to claim 1, characterized in that, The heat pump system also includes a first throttling valve connected in series with the first evaporator and a second throttling valve connected in series with the second evaporator; The compressor, the condenser, the first throttle valve, and the first evaporator constitute a first refrigerant circuit; The compressor, the condenser, the second throttle valve, and the second evaporator constitute a second refrigerant circuit.

3. The dehumidification module according to claim 1 or 2, characterized in that, It also includes a regeneration heater, which is disposed in the regeneration air flow path and located between the condenser and the desorption regeneration zone.

4. The dehumidification module according to claim 1, characterized in that, The air outlet of the second evaporator is connected to the inlet of the processing air flow path so as to introduce the air cooled and dehumidified by the second evaporator into the processing air flow path.

5. The dehumidification module according to claim 4, characterized in that, The inlet of the processing air flow path also includes a fresh air inlet for introducing fresh air, so that the fresh air mixes with the air cooled and dehumidified by the second evaporator before entering the first evaporator.

6. The dehumidification module according to claim 1, characterized in that, The inlet of the regenerated air flow path is connected to the outlet of the processed air flow path, so that a portion of the air dried in the adsorption treatment zone is used as regenerated air.

7. The dehumidification module according to claim 1, characterized in that, An adsorption fan is provided in the processing air flow path, and a regeneration fan is provided in the regeneration air flow path.

8. The dehumidification module according to claim 1, characterized in that, It also includes an adjustable speed motor connected to the dehumidifying wheel drive.

9. The dehumidification module according to claim 1, characterized in that, A medium-efficiency filter is also installed at the inlet of the processing airflow path.

Images