Fresh air heat pump type rotary dehumidifier

Abstract

The utility model discloses a fresh air heat pump type rotary dehumidifier, which belongs to the technical field of dehumidification rotary wheels and comprises a heat pump system and a dehumidification system. The heat pump system comprises an evaporator, a core heat recoverer, a condenser and a compressor; the dehumidification system comprises a dehumidification rotating wheel; an evaporator, a core body heat recoverer, a condenser and a regeneration area of a dehumidification rotating wheel are sequentially arranged along a fresh air path, and the evaporator and the condenser are connected with a compressor through a liquid path. And an air outlet of the regeneration area of the dehumidification rotating wheel is connected with the core body heat recoverer. According to the fresh air heat pump type rotary dehumidifier, heat recycling is achieved, dependence on traditional regeneration heating devices such as an electric heater or a steam heater can be basically or completely avoided, energy consumption of system operation is effectively reduced, carbon emission is reduced, and green production is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of dehumidification rotor technology, specifically relating to a fresh air heat pump type rotor dehumidifier. Background Technology

[0002] Rotary dehumidifiers are highly efficient dehumidification devices widely used in industrial, commercial, and residential fields. Their core component is the rotary wheel, which circulates between the regeneration and treatment zones. When humid air flows through the treatment zone, water vapor in the air is adsorbed by the wheel, thus reducing air humidity. The wheel then enters the regeneration zone, where heating evaporates the adsorbed moisture, restoring the wheel's adsorption capacity. This cycle continues, achieving continuous dehumidification. Currently, the main methods for providing regeneration heating include electric heating, steam heating, gas heating, and industrial waste heat. Electric heating suffers from high operating costs, expensive electricity, and relatively long heating times. Steam heating has issues such as low thermal efficiency, unstable steam pressure leading to temperature fluctuations, condensate recovery and discharge problems, and high equipment investment and maintenance costs. Gas heating can affect the regeneration of the dehumidifier due to the exhaust gases produced. Industrial waste heat may not meet the precise requirements for regeneration heating due to temperature and stability limitations. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an environmentally friendly, energy-saving single-stage heat pump dehumidifier that can achieve good regeneration of the dehumidification rotor.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a fresh air heat pump type rotary dehumidifier, including a heat pump system and a dehumidification system; the heat pump system includes an evaporator, a core heat recovery unit, a condenser, and a compressor; the dehumidification system includes a dehumidification rotor; the evaporator, the core heat recovery unit, the condenser, and the regeneration zone of the dehumidification rotor are arranged sequentially along the fresh air path, and the evaporator and the condenser are connected to the compressor through a liquid path; the exhaust port of the regeneration zone of the dehumidification rotor is connected to the core heat recovery unit.

[0005] Furthermore, the heat pump system also includes a fresh air filter, which is disposed at the inlet of the heat pump system.

[0006] Furthermore, the fresh air filter is a panel filter.

[0007] Furthermore, the pump system also includes a fresh air fan.

[0008] Furthermore, the fresh air fan is an axial flow fan or an EC fan.

[0009] Furthermore, the dehumidification system includes a fresh air duct and a regeneration duct;

[0010] The regeneration zone of the dehumidifying impeller is located within the regeneration channel;

[0011] The dehumidification rotor's processing area is located within the fresh air duct.

[0012] Furthermore, the regeneration channel is provided with a regeneration zone with a dehumidifying rotor and a regeneration exhaust fan in sequence along the regeneration air path.

[0013] Furthermore, the fresh air duct is provided with a pre-filter, a front surface cooler, a dehumidification wheel treatment area, and a rear surface cooler in sequence along the second fresh air path.

[0014] Furthermore, the heat pump system also includes a temperature sensor disposed between the condenser and the outlet of the heat pump system.

[0015] Furthermore, it also includes an auxiliary heater, which is disposed between the outlet of the heat pump system and the air inlet of the regeneration zone of the dehumidifying impeller.

[0016] The beneficial effects of this utility model are as follows: The rotary dehumidifier provided by this utility model has a heat pump system that can heat the fresh air. The heat pump system also adds a core heat recovery unit between the evaporator and the condenser. While providing regeneration air at a higher temperature of 75~80℃ for the regeneration of the dehumidification rotor, it can effectively utilize the waste heat generated by the system operation, avoid heat loss, reduce energy consumption, and thus significantly reduce operating costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system structure of a specific embodiment of the present invention;

[0018] Label Explanation:

[0019] 1. Heat pump system; 11. Evaporator; 12. Core heat recovery unit; 13. Condenser; 14. Compressor; 15. Fresh air filter; 16. Fresh air fan;

[0020] 2. Dehumidification system; 21. Dehumidification rotor; 211. Regeneration zone; 212. Processing zone; 22. Regeneration exhaust fan;

[0021] 3. Air ducts;

[0022] 4. Auxiliary heater. Detailed Implementation

[0023] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0024] Please refer to Figure 1A fresh air heat pump type rotary dehumidifier includes a heat pump system and a dehumidification system; the heat pump system includes an evaporator, a core heat recovery unit, a condenser, and a compressor; the dehumidification system includes a dehumidification rotor; the evaporator, core heat recovery unit, condenser, and dehumidification rotor regeneration zone are arranged sequentially along the fresh air path, and the evaporator and condenser are connected to the compressor through a liquid circuit; the exhaust port of the regeneration zone of the dehumidification rotor is connected to the core heat recovery unit.

[0025] As described above, the beneficial effects of this utility model are as follows: the evaporator, core heat recovery unit, condenser, and compressor, in conjunction with a throttling valve, form a heat pump system. Fresh air first passes through the evaporator for cooling, providing the heat required for heat exchange. Then, it passes through the core heat recovery unit for heat exchange with the regenerated exhaust air, and after being heated, it passes through the condenser for further heating to 75-80°C. The regenerated air, acting as the dehumidification impeller, is then discharged from the heat pump system into the dehumidification system. The exhaust air after regeneration by the dehumidification impeller enters the core heat recovery unit through ductwork, where it exchanges heat with the subsequent fresh air. The regenerated exhaust air discharged from the dehumidification impeller has a temperature of approximately 45-55°C. By recovering it to the core heat recovery unit, it can exchange heat with the fresh air, raising its temperature and achieving a preheating effect, allowing it to reach a higher temperature after passing through the condenser. Simultaneously, the heat pump system and dehumidification system are independently set up, facilitating the modification of existing impeller dehumidification systems that rely on electric heating, steam heating, or gas heating. This can be achieved quickly by adding a heat pump system and ductwork. It features low retrofitting costs and convenient installation, effectively reducing the costs associated with equipment replacement for businesses. This new type of rotary dehumidifier with a heat pump achieves heat recovery and utilization, enabling it to operate largely or entirely independently of traditional regenerative heating devices such as electric heaters or steam heaters. This effectively reduces system energy consumption, carbon emissions, and promotes green production.

[0026] In one or more embodiments, the heat pump system further includes a fresh air filter disposed at the inlet of the heat pump system.

[0027] In one or more embodiments, the fresh air filter is a panel filter.

[0028] By installing a fresh air filter, such as a panel filter, at the inlet, dust, particulate matter, and other impurities in the air can be initially filtered, reducing the dust content in the air and preventing these impurities from entering the rotor regeneration zone, thus avoiding clogging the rotor pores and affecting dehumidification efficiency and service life.

[0029] In one or more embodiments, the heat pump system further includes a fresh air fan. At least one fresh air fan is required in the entire heat pump system to power the entire dehumidification process and ensure that air can be introduced and smoothly pass through the designated air duct. The specific number and location can be selected based on factors such as the size of the system.

[0030] In one or more embodiments, the fresh air fan is an axial flow fan or an EC fan. Axial flow fans offer advantages such as simple structure, small size, large air volume, and low ventilation resistance, enabling long-distance air delivery and making them suitable for locations with high air volume requirements and limited space. EC fans, on the other hand, offer advantages such as high efficiency and energy saving, intelligent control, low noise, and low vibration. They utilize brushless DC motors, achieving high-efficiency energy conversion and significantly reducing energy consumption, while also supporting stepless speed regulation and multiple control modes. The choice between these options can be made during actual installation based on factors such as the application environment and budget.

[0031] In one or more embodiments, the dehumidification system includes a fresh air duct and a regeneration duct; the regeneration zone of the dehumidification impeller is located within the regeneration duct; the processing zone of the dehumidification impeller is located within the fresh air duct. One stream of fresh air is dehumidified and temperature-controlled through the fresh air duct and then sent to a designated area, such as a factory; another stream of heated fresh air regenerates the dehumidification impeller through the regeneration duct.

[0032] In one or more embodiments, a regeneration zone with a dehumidifying rotor and a regeneration exhaust fan are sequentially arranged along the regeneration air path (the direction of regeneration air flow) within the regeneration channel.

[0033] In one or more embodiments, a pre-filter, a pre-cooler, a dehumidifying impeller processing area, and a post-cooler are sequentially arranged along the second fresh air path within the fresh air duct. A stream of fresh air passes sequentially through the pre-filter, pre-cooler, dehumidifying impeller processing area, and post-cooler, achieving dehumidification and temperature regulation of the fresh air until it reaches the desired level before being delivered to the designated area. The equipment on the second fresh air path can be adjusted according to needs, such as the number of coolers, the number of dehumidifying impellers, and the type and number of filters.

[0034] In one or more embodiments, the heat pump system further includes a temperature sensor disposed between the condenser and the outlet of the heat pump system.

[0035] In one or more embodiments, an auxiliary heater is further included, positioned between the outlet of the heat pump system and the air inlet of the regeneration zone of the dehumidifying rotor. By further incorporating a temperature sensor and the auxiliary heater, the temperature of the regeneration air provided by the heat pump system can be further monitored, allowing for selective heating or non-heating based on the characteristics of the dehumidifying rotor. The auxiliary heater can be located within or outside the dehumidification system. When retrofitting an existing rotary dehumidifier, the auxiliary heater is the original heater integrated into the rotary dehumidifier.

[0036] Example 1:

[0037] Please refer to Figure 1 A new type of heat pump rotary dehumidifier includes a heat pump system 1, a dehumidification system 2 and an auxiliary heater 4;

[0038] The heat pump system 1 includes a fresh air filter 15, a fresh air fan 16, an evaporator 11, a core heat recovery unit 12, a condenser 13, a compressor 14, and a temperature sensor;

[0039] A fresh air filter 15, a fresh air fan 16, an evaporator 11, a core heat recovery unit 12, a condenser 13, a temperature sensor, and a regeneration zone for a dehumidifying impeller are sequentially arranged along the fresh air duct.

[0040] Evaporator 11 and condenser 13 are connected to compressor 14 via liquid lines;

[0041] The exhaust vent of the regeneration zone 211 of the dehumidifying rotor 21 is connected to the core heat recovery unit 12;

[0042] Core heat recovery unit 12 is an aluminum foil core heat recovery unit;

[0043] The fresh air filter 15 is a panel filter;

[0044] The dehumidification system includes a fresh air duct and a regeneration duct;

[0045] Along the regeneration air path (the direction of regeneration air flow) in the regeneration channel, there are a regeneration zone 211 with a dehumidifying rotor 21 and a regeneration exhaust fan 22.

[0046] Along the second fresh air path, the fresh air duct is equipped with a pre-filter, a front surface cooler, a treatment area 212 of the dehumidification wheel 21, and a rear surface cooler.

[0047] The auxiliary heater 4 is located between the outlet of the heat pump system and the air inlet of the regeneration zone of the dehumidifying rotor;

[0048] Both the fresh air fan 16 and the regenerative exhaust fan 22 are EC fans.

[0049] Example 2: Based on Example 1, but without the temperature sensor and auxiliary heater 4.

[0050] The working process of this utility model is as follows:

[0051] The first stream of fresh air enters the heat pump system through the inlet of the heat pump system under the action of the fresh air fan 16. It first passes through the fresh air filter 15, then passes through the evaporator 11 to cool down while providing the heat exchange required by the evaporator 11. Then it passes through the core heat recovery unit 12 to exchange heat with the regenerated exhaust air and is heated up. Then it passes through the condenser 13 to be further heated up. Then it is discharged from the outlet of the heat pump system and enters the regenerated air path of the dehumidification system through the air duct 3 as regenerated air. After the dehumidification of the dehumidification wheel is achieved, it is discharged from the regenerated air path of the dehumidification system under the action of the regenerated exhaust fan and enters the core heat recovery unit 12 through the air duct 3 to exchange heat with the first stream of fresh air therein.

[0052] The second fresh air enters from the fresh air duct of the dehumidification system, and passes sequentially through the pre-filter, the front surface cooler, the processing area 212 of the dehumidification rotor 21, and the rear surface cooler, achieving temperature regulation and dehumidification before being sent to the designated area.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fresh air heat pump type rotary dehumidifier, characterized by, It includes a heat pump system and a dehumidification system; the heat pump system includes an evaporator, a core heat recovery unit, a condenser, and a compressor; the dehumidification system includes a dehumidification impeller; the evaporator, core heat recovery unit, condenser, and regeneration zone of the dehumidification impeller are arranged sequentially along the first fresh air path, and the evaporator and condenser are connected to the compressor through a liquid path; the exhaust port of the regeneration zone of the dehumidification impeller is connected to the core heat recovery unit.

2. The fresh air heat pump type rotary dehumidifier according to claim 1, characterized by The heat pump system also includes a fresh air filter, which is installed at the inlet of the heat pump system.

3. The fresh air heat pump type rotary dehumidifier according to claim 2, characterized by The fresh air filter is a plate filter.

4. The fresh air heat pump type rotary dehumidifier according to claim 1, characterized by The pump system also includes a fresh air fan.

5. The fresh air heat pump type rotary dehumidifier according to claim 4, characterized by The fresh air fan is an axial flow fan or an EC fan.

6. The fresh air heat pump type rotary dehumidifier according to claim 1, characterized in that, The dehumidification system includes a fresh air duct and a regeneration duct; The regeneration zone of the dehumidifying impeller is located within the regeneration channel; The dehumidification rotor's processing area is located within the fresh air duct.

7. The fresh air heat pump type rotary dehumidifier according to claim 6, characterized by The regeneration channel is equipped with a regeneration zone with a dehumidifying rotor and a regeneration exhaust fan arranged sequentially along the regeneration air path.

8. The fresh air heat pump type rotary dehumidifier according to claim 6, characterized by The fresh air duct is provided with a pre-filter, a front surface cooler, a dehumidifying wheel treatment area, and a rear surface cooler in sequence along the second fresh air path.

9. The fresh air heat pump type rotary dehumidifier according to claim 1, characterized by The heat pump system also includes a temperature sensor, which is located between the condenser and the outlet of the heat pump system.

10. The fresh air heat pump type rotary dehumidifier according to claim 9, characterized by It also includes an auxiliary heater, which is located between the outlet of the heat pump system and the air inlet of the regeneration zone of the dehumidifying impeller.

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