A waste heat recovery type heat pump rotary dehumidifier

Abstract

This utility model discloses a waste heat recovery type heat pump rotary dehumidifier, belonging to the field of dehumidification rotary dehumidifier technology. The waste heat recovery type heat pump rotary dehumidifier includes a core heat recovery unit, an evaporator, a compressor, a condenser, and a dehumidification rotary dehumidifier. The regeneration zones of the core heat recovery unit, condenser, and dehumidification rotary dehumidifier are arranged sequentially along the fresh air path. The exhaust vent of the regeneration zone of the dehumidification rotary dehumidifier is connected to the core heat recovery unit. The regeneration zone of the dehumidification rotary dehumidifier, the core heat recovery unit, and the evaporator are arranged sequentially along the regeneration exhaust air path. The evaporator, compressor, and condenser are connected through a liquid path. The waste heat recovery type heat pump rotary dehumidifier provided by this utility model can fully utilize regenerated waste heat and provide sufficient heat for rotary dehumidifier regeneration.

Description

Technical Field

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

[0002] A rotary dehumidifier is a highly efficient air dehumidification device that reduces air humidity by adsorbing moisture from the air through a rotating wheel. Its working principle involves a wheel containing a desiccant continuously rotating between a regeneration zone and a treatment zone. When humid air flows through the treatment zone, the water vapor in the air is adsorbed by the desiccant on the wheel, thus drying the air. In the regeneration zone, the air is heated to raise its temperature, causing the moisture on the wheel to evaporate and restoring its moisture-absorbing capacity, completing a cycle and continuously achieving a dehumidification effect. Currently, some rotary dehumidifiers utilize heat pumps for wheel regeneration. The heat pump system heats the regeneration air to the required regeneration temperature of the wheel, providing heat to desorb the adsorbed moisture. However, problems remain, such as insufficient heating temperature for complete wheel regeneration and incomplete heat recovery. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a rotary dehumidifier with high energy utilization efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a waste heat recovery type heat pump rotary dehumidifier, including a core heat recovery unit, an evaporator, a compressor, a condenser and a dehumidification rotary wheel;

[0005] The regeneration zones of the core heat recovery unit, condenser, and dehumidifier are arranged sequentially along the fresh air duct; the exhaust vent of the regeneration zone of the dehumidifier is connected to the core heat recovery unit.

[0006] The regeneration zone of the dehumidifying rotor, the core heat recovery unit, and the evaporator are arranged sequentially along the regeneration exhaust air path;

[0007] The evaporator, compressor, and condenser are connected via a liquid circuit.

[0008] The core heat recovery unit includes a fresh air duct and a return air duct; one end of the fresh air duct is positioned towards the condenser; one end of the return air duct is connected to the exhaust port of the regeneration zone of the dehumidifying impeller, and the other end is positioned towards the evaporator.

[0009] It also includes a pre-filter and a fresh air fan; the regeneration zones of the pre-filter, fresh air fan, core heat recovery unit, condenser and dehumidification impeller are arranged sequentially along the fresh air path.

[0010] This also includes heat pump housings and dehumidification housings;

[0011] The core heat recovery unit, evaporator, compressor, and condenser are housed within the heat pump housing.

[0012] The dehumidification wheel is located inside the dehumidification chamber.

[0013] The heat pump housing includes a first housing and a second housing; the core heat recovery unit and the condenser are disposed in the first housing; and the evaporator and the compressor are disposed in the second housing.

[0014] It also includes a temperature sensor; the temperature sensor is located at the air outlet of the condenser.

[0015] It also includes an auxiliary heater, which is located between the regeneration zone of the condenser and the dehumidification impeller.

[0016] The dehumidification chamber includes a regeneration channel and a dehumidification channel;

[0017] The regeneration zone of the dehumidifying impeller is located within the regeneration channel; the processing zone of the dehumidifying impeller is located within the dehumidification channel.

[0018] The regeneration channel has a regeneration air inlet and a regeneration air outlet, and a regeneration zone of a dehumidifying rotor and a regeneration exhaust fan are arranged sequentially from the regeneration air inlet to the regeneration air outlet.

[0019] The core heat recovery device is an aluminum foil core heat recovery device.

[0020] The beneficial effects of this utility model are as follows: The waste heat recovery type heat pump rotary dehumidifier provided by this utility model recovers the hot and humid air (regeneration exhaust air) discharged after regeneration. After exchanging heat with the fresh air used for regeneration, it is used to provide the required heat exchange for the evaporator, realizing the double utilization of the regeneration exhaust air and significantly reducing heat loss. At the same time, the evaporator, condenser and compressor form a heat pump system. The fresh air used for regeneration after exchanging heat with the regeneration exhaust air is heated by the condenser, and its temperature is raised to the temperature required for heat exchange of the dehumidification rotary dehumidifier, so it can be directly used to regenerate the dehumidifier. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the system structure of this utility model;

[0022] Label Explanation:

[0023] 1. Dehumidifying impeller; 101. Regeneration zone; 102. Processing zone; 2. Pre-filter; 3. Fresh air fan; 4. Core heat recovery unit; 5. Condenser; 6. Evaporator; 7. Compressor; 8. Regeneration air inlet; 9. Regeneration air outlet; 10. Regeneration exhaust fan; 11. Air duct. Detailed Implementation

[0024] 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.

[0025] Please refer to Figure 1 A waste heat recovery type heat pump rotary dehumidifier includes a core heat recovery unit, an evaporator, a compressor, a condenser, and a dehumidification rotor;

[0026] The regeneration zones of the core heat recovery unit, condenser, and dehumidifier are arranged sequentially along the fresh air duct; the exhaust vent of the regeneration zone of the dehumidifier is connected to the core heat recovery unit.

[0027] The regeneration zone of the dehumidifying rotor, the core heat recovery unit, and the evaporator are arranged sequentially along the regeneration exhaust air path;

[0028] An evaporator, compressor, and condenser are connected via a liquid circuit to form a heat pump.

[0029] As described above, the beneficial effects of this utility model are as follows: The waste heat recovery type heat pump rotary dehumidifier provided by this utility model has a single-stage heat pump system consisting of an evaporator, a compressor, and a condenser. Unlike traditional single-stage heat pump systems, it has a pre-installed core heat recovery unit to preheat the fresh air before it enters the condenser, so that the air temperature after passing through the condenser can reach 85~90℃, which can meet the temperature required for rotary regeneration. At the same time, the heat used to preheat the fresh air comes from the regeneration exhaust air, effectively utilizing its heat. The regeneration exhaust air, after heat exchange, is not directly discharged outdoors, but passes through the evaporator of the heat pump system and is reused to provide the required heat exchange for the evaporator, realizing two heat recoverys. This effectively avoids energy waste and thermal pollution, making the entire system have high energy utilization efficiency.

[0030] Furthermore, the core heat recovery unit includes a fresh air duct and a return air duct; one end of the fresh air duct faces the condenser; one end of the return air duct is connected to the exhaust port of the regeneration zone of the dehumidifying impeller, and the other end faces the evaporator. The fresh air duct is used to pass fresh air, and the return air duct is used to pass regeneration exhaust air, thereby realizing heat exchange between the fresh air and the regeneration exhaust air. At the same time, the return air duct can guide the regeneration exhaust air to the air inlet of the evaporator, so that it can further provide the heat required for heat exchange to the evaporator.

[0031] Furthermore, it also includes a pre-filter and a fresh air fan; the pre-filter, fresh air fan, core heat recovery unit, condenser, and regeneration zone of the dehumidifying impeller are arranged sequentially along the fresh air path. The fresh air fan is used to introduce fresh air, and the pre-filter is used to filter the fresh air to prevent impurities from affecting subsequent equipment.

[0032] Furthermore, it also includes a heat pump enclosure and a dehumidification enclosure;

[0033] The core heat recovery unit, evaporator, compressor, and condenser are housed inside the heat pump housing;

[0034] The dehumidifying rotor is housed within the dehumidifying chamber. The heat pump chamber is used to integrate equipment that constitutes the heat pump system. It is independent of the dehumidifying chamber itself. The heat pump chamber can be connected to the dehumidifying chamber via ductwork. This structure facilitates energy-saving retrofits of existing dehumidifiers. A heat pump chamber can be directly installed externally, and the retrofit can be achieved by connecting the ductwork. This avoids modifying the dehumidifying chamber or introducing new equipment, reducing costs for enterprises and allowing the waste heat recovery type heat pump rotor dehumidifier to be put into daily use as soon as possible.

[0035] Furthermore, the heat pump enclosure includes a first enclosure and a second enclosure; the core heat recovery unit and condenser are located in the first enclosure; the evaporator and compressor are located in the second enclosure. The first and second enclosures are independently configured to prevent fresh air from entering the second enclosure from the first enclosure. The core heat recovery unit in the first enclosure is connected to the second enclosure via a separate duct, and the evaporator and compressor in the second enclosure are connected to the condenser in the first enclosure via a liquid circuit, forming a heat pump system.

[0036] Furthermore, it also includes a temperature sensor; the temperature sensor is located at the air outlet of the condenser. The temperature sensor can detect the regenerated air after the condenser has been heated.

[0037] Furthermore, it also includes an auxiliary heater, which is located between the condenser and the regeneration zone of the dehumidifier rotor. Depending on the temperature rise of the condenser and the condition of the dehumidifier rotor, the auxiliary heater may or may not be used. When retrofitting existing rotary dehumidifiers, the existing units are usually equipped with heating devices that can be used as auxiliary heaters, eliminating the need for a new one. The auxiliary heater can be located inside the dehumidifier housing or in a separate, independent housing, separate from the heat pump housing and the dehumidifier housing.

[0038] Furthermore, the dehumidification chamber includes a regeneration channel and a dehumidification channel;

[0039] The regeneration zone of the dehumidifying rotor is located within the regeneration channel; the processing zone of the dehumidifying rotor is located within the dehumidification channel.

[0040] The dehumidification and regeneration channels are independent air ducts. The dehumidification channel dehumidifies the fresh air and then delivers it to designated areas, such as workshops and factories. The regeneration channel regenerates the dehumidification impeller. Besides the dehumidification impeller's processing area, various filters, fans, and surface coolers can be installed within the dehumidification channel to meet dehumidification and temperature control requirements.

[0041] Furthermore, the regeneration channel has a regeneration air inlet and a regeneration air outlet, and a regeneration zone for the dehumidifying rotor and a regeneration exhaust fan are arranged sequentially from the regeneration air inlet to the regeneration air outlet.

[0042] Furthermore, the core heat recovery unit is an aluminum foil core heat recovery unit. Aluminum foil core heat recovery units have high heat exchange efficiency, enabling them to efficiently recover waste heat and convert it into reusable energy, thereby reducing energy consumption and costs. At the same time, they have a compact structure, small size, are easy to install and maintain, and are highly durable, capable of long-term stable operation in various environments.

[0043] Furthermore, the auxiliary heater is an electric heater, a steam heater, or a gas heater.

[0044] Furthermore, the pre-filter is a plate filter. The plate filter can filter the incoming air, removing dust, particulate matter and other impurities, preventing these impurities from adhering to the dehumidification impeller, thereby protecting the dehumidification impeller and extending its service life.

[0045] Furthermore, the fresh air fan and regenerative exhaust fan are either EC fans or axial flow fans. EC fans are characterized by high efficiency, energy saving, low noise, long lifespan, and intelligent control, and can dynamically adjust their speed according to actual needs to achieve energy saving and consumption reduction; axial flow fans, on the other hand, have a simple and reliable structure, large air volume, low noise, and are easy to install, making them suitable for various ventilation scenarios. The appropriate fan can be selected based on specific conditions and requirements during actual installation.

[0046] Example 1:

[0047] A waste heat recovery type heat pump rotary dehumidifier includes a heat pump housing and a dehumidification housing;

[0048] The heat pump housing includes a first housing and a second housing; the first housing contains a pre-filter 2, a fresh air fan 3, a core heat recovery unit 4, and a condenser 5; the second housing contains an evaporator 6 and a compressor 7; the evaporator 6, compressor 7, and condenser 5 are connected by a liquid circuit; the liquid circuit contains refrigerant;

[0049] The dehumidification chamber has a regeneration channel and a dehumidification channel; the regeneration zone 101 of the dehumidification rotor 1 is located in the regeneration channel; the processing zone 102 of the dehumidification rotor 1 is located in the dehumidification channel.

[0050] The pre-filter 2, fresh air fan 3, core heat recovery unit 4, condenser 5 and dehumidification rotor 1 regeneration zone 101 are arranged sequentially along the fresh air path;

[0051] The regeneration channel has a regeneration air inlet 8 and a regeneration air outlet 9. A regeneration zone 101 of the dehumidifying rotor 1 and a regeneration exhaust fan 10 are arranged sequentially along the regeneration air inlet 8 to the regeneration air outlet 9.

[0052] The core heat recovery unit 4 includes a fresh air duct and a return air duct; one end of the fresh air duct is set towards the condenser 5; one end of the return air duct is connected to the regenerated air outlet 9, and the other end is set towards the evaporator 6.

[0053] The regeneration zone 101 of the dehumidifying rotor 1, the core heat recovery unit 4 and the evaporator 6 are arranged sequentially along the regeneration exhaust air path;

[0054] The primary filter 2 is a plate filter; the fresh air fan 3 and the regeneration exhaust fan 10 are both EC fans.

[0055] The working process of this utility model is as follows:

[0056] A stream of fresh air, under the action of the fresh air fan 3, first passes through the pre-filter 2, and then enters the fresh air duct of the aluminum foil core heat recovery unit. It exchanges heat with the regeneration exhaust air to achieve the first temperature rise, and then passes through the condenser 5 to achieve the second temperature rise, reaching 85~90℃. Then it enters the dehumidification channel of the dehumidification box through the air duct 11 to regenerate the regeneration zone 101 of the dehumidification rotor 1. Finally, it is sent to the return air duct of the aluminum foil core heat recovery unit through the air duct 11 via the regeneration exhaust fan 10.

[0057] The regenerated exhaust air, which enters the return air duct at approximately 45-55°C, exchanges heat with the fresh air in the fresh air duct and cools down to 30-35°C. Then it enters the evaporator 6, where it is cooled to 20-25°C after providing the necessary heat for heat exchange. Finally, it is discharged.

[0058] Example 2:

[0059] Please refer to 1. Based on Example 1, it also includes a temperature sensor and an auxiliary heater; the temperature sensor is set at the air outlet of the condenser, and the auxiliary heater is set between the regeneration zone of the condenser and the dehumidification impeller; the auxiliary heater is an electric heater.

[0060] 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 waste heat recovery type heat pump rotary dehumidifier, characterized in that, It includes a core heat recovery unit, evaporator, compressor, condenser, and dehumidifier impeller; The regeneration zones of the core heat recovery unit, condenser, and dehumidifier are arranged sequentially along the fresh air duct; the exhaust vent of the regeneration zone of the dehumidifier is connected to the core heat recovery unit. The regeneration zone of the dehumidifying rotor, the core heat recovery unit, and the evaporator are arranged sequentially along the regeneration exhaust air path; The evaporator, compressor, and condenser are connected by a liquid circuit.

2. The waste heat recovery type heat pump rotary dehumidifier according to claim 1, characterized in that, The core heat recovery unit includes a fresh air duct and a return air duct; one end of the fresh air duct is set towards the condenser; one end of the return air duct is connected to the exhaust port of the regeneration zone of the dehumidification rotor, and the other end is set towards the evaporator.

3. The waste heat recovery type heat pump rotary dehumidifier according to claim 1, characterized in that, It also includes a pre-filter and a fresh air fan; the regeneration zones of the pre-filter, fresh air fan, core heat recovery unit, condenser and dehumidification impeller are arranged sequentially along the fresh air path.

4. The waste heat recovery type heat pump rotary dehumidifier according to claim 1, characterized in that, It also includes heat pump housings and dehumidification housings; The core heat recovery unit, evaporator, compressor, and condenser are housed within the heat pump housing. The dehumidification wheel is located inside the dehumidification chamber.

5. The waste heat recovery type heat pump rotary dehumidifier according to claim 4, characterized in that, The heat pump housing includes a first housing and a second housing; the core heat recovery unit and condenser are disposed in the first housing; and the evaporator and compressor are disposed in the second housing.

6. The waste heat recovery type heat pump rotary dehumidifier according to claim 1, characterized in that, It also includes a temperature sensor; the temperature sensor is located at the air outlet of the condenser.

7. The waste heat recovery type heat pump rotary dehumidifier according to claim 6, characterized in that, It also includes an auxiliary heater, which is located between the regeneration zone of the condenser and the dehumidification rotor.

8. The waste heat recovery type heat pump rotary dehumidifier according to claim 4, characterized in that, The dehumidification chamber includes a regeneration channel and a dehumidification channel; The regeneration zone of the dehumidifying impeller is located within the regeneration channel; the processing zone of the dehumidifying impeller is located within the dehumidification channel.

9. The waste heat recovery type heat pump rotary dehumidifier according to claim 8, characterized in that, The regeneration channel has a regeneration air inlet and a regeneration air outlet, and a regeneration zone for the dehumidifying rotor and a regeneration exhaust fan are arranged sequentially from the regeneration air inlet to the regeneration air outlet.

10. The waste heat recovery type heat pump rotary dehumidifier according to claim 1, characterized in that, The core heat recovery device is an aluminum foil core heat recovery device.

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