Energy-saving rotary dehumidifier

Abstract

The utility model discloses an energy-saving rotary dehumidifier, and belongs to the technical field of rotary dehumidifiers. The energy-saving rotary dehumidifier comprises a dehumidification part and a regeneration part, a dehumidification rotary wheel is arranged in the dehumidification part, and the regeneration part comprises a bipolar coupling heat pump used for providing regeneration air for a regeneration area of the dehumidification rotary wheel. The bipolar coupling heat pump comprises a low-pressure stage system, a high-pressure stage system and a heat exchanger. And the low-pressure stage system and the high-pressure stage system realize heat exchange in the heat exchanger. According to the energy type rotary wheel dehumidifier, the bipolar coupling heat pump is adopted to provide regeneration heat for the dehumidification rotary wheel, the provided heat can basically or completely meet the heat needed by regeneration of the dehumidification rotary wheel, and energy consumption needed by regeneration of the dehumidification rotary wheel can be greatly reduced; furthermore, the performance of the rotary dehumidifier is improved, the energy consumption of the rotary dehumidifier is reduced, the environmental pollution is reduced, and energy-saving and green production is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotary dehumidifiers, specifically relating to an energy-saving rotary dehumidifier. Background Technology

[0002] In industrial production fields such as lithium battery manufacturing, precision instruments, food production, chemicals, and pharmaceuticals, humidity control is essential to ensure product quality. Among various dehumidification devices, rotary dehumidifiers are widely used due to their superior dehumidification performance. The core component of a rotary dehumidifier is a honeycomb-structured dehumidification rotor made of a special adsorption material. When humid air flows through the rotor, water vapor in the air is adsorbed by the adsorption material, thereby reducing air humidity. The rotor rotates slowly under the drive of a motor. The saturated adsorption portion enters the regeneration zone, where heated air is blown across the rotor to decompose and expel the adsorbed water, completing the regeneration process and restoring adsorption capacity. This cycle achieves continuous dehumidification. The dehumidified air is then temperature-adjusted and delivered to a designated space to achieve humidity and temperature control.

[0003] Currently, the commonly used regenerative heating devices in industrial rotary dehumidifiers are electric heaters and steam heaters. However, these two types of heating devices have the problem of high energy consumption, with the energy consumption during the regeneration of the dehumidification rotor accounting for about half of the total energy consumption of industrial rotary dehumidifiers. Therefore, researching more energy-efficient and environmentally friendly regenerative heating devices is of great significance for improving equipment performance, reducing energy consumption, and reducing environmental pollution. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an energy-saving rotary dehumidifier with low regenerative heating energy consumption.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an energy-saving rotary dehumidifier, including a dehumidification section and a regeneration section, wherein the dehumidification section is provided with a dehumidification rotor, and the regeneration section includes a bipolar coupled heat pump for providing regeneration air to the regeneration zone of the dehumidification rotor; the bipolar coupled heat pump is connected to the regeneration zone of the dehumidification rotor through a pipeline; the bipolar coupled heat pump includes a low-pressure stage system, a high-pressure stage system and a heat exchanger; the low-pressure stage system and the high-pressure stage system achieve heat exchange in the heat exchanger.

[0006] Furthermore, the low-pressure stage system includes an evaporator and a low-pressure compressor; the high-pressure stage system includes a high-pressure compressor and a condenser.

[0007] Furthermore, a primary filter and a blower are sequentially installed before the evaporator.

[0008] Furthermore, the regeneration section includes a first cavity, a second cavity, and a third cavity; the evaporator is located in the first cavity, the condenser is located in the third cavity, and the low-level compressor, heat exchanger, and high-level compressor are located in the second cavity.

[0009] Furthermore, it also includes a heat recovery unit, through which the first cavity and the third cavity are connected.

[0010] Furthermore, the heat recovery unit includes a return air inlet and a return air outlet; the return air inlet is connected to the exhaust vent of the regeneration zone of the dehumidifying impeller; and the return air outlet is connected to the outside.

[0011] Furthermore, the dehumidification section is provided with a first filter, a front surface cooler, a dehumidification impeller, and a rear surface cooler in sequence.

[0012] Furthermore, the dehumidification section is provided with an air inlet located between the first filter and the front surface cooler, and the first cavity is connected to the air inlet.

[0013] Furthermore, the third cavity is provided with a fresh air inlet and a fresh air outlet; the fresh air outlet is connected to the regeneration zone of the dehumidifying impeller.

[0014] Furthermore, it also includes an auxiliary heating device; the auxiliary heating device is installed on the pipeline connecting the bipolar coupled heat pump and the regeneration zone of the dehumidification impeller.

[0015] The beneficial effects of this utility model are as follows: The energy-efficient rotary dehumidifier provided by this utility model uses a bipolar coupled heat pump to provide regeneration heat for the dehumidification rotor. The heat provided can basically or completely meet the heat required for the regeneration of the dehumidification rotor, which can significantly reduce the energy consumption required for the regeneration of the dehumidification rotor, thereby improving the performance of the rotary dehumidifier, reducing its energy consumption and reducing environmental pollution, and realizing energy-saving and green production. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an energy-saving rotary dehumidifier according to a specific embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of another energy-saving rotary dehumidifier according to a specific embodiment of the present invention;

[0018] Figure 3 This is a structural schematic diagram of another energy-saving rotary dehumidifier according to a specific embodiment of the present utility model;

[0019] Label Explanation:

[0020] 10. Dehumidification section; 101. First filter; 102. Front surface cooler; 103. Dehumidification impeller; 104. Rear surface cooler;

[0021] 20. Regeneration section; 201. First cavity; 202. Second cavity; 203. Third cavity; 204. Evaporator; 205. Primary compressor; 206. Advanced compressor; 207. Condenser; 208. Heat exchanger; 209. Primary filter; 210. Air blower; 211. Temperature sensor;

[0022] 30. Heat recovery unit;

[0023] 40. Auxiliary heating device. 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 as well as Figure 2 An energy-saving rotary dehumidifier includes a dehumidification section and a regeneration section. The dehumidification section contains a dehumidification rotor, and the regeneration section includes a bipolar coupled heat pump for providing high-temperature, low-humidity regeneration air to the regeneration zone of the dehumidification rotor. The bipolar coupled heat pump is connected to the regeneration zone of the dehumidification rotor via a pipeline. The bipolar coupled heat pump includes a low-pressure stage system, a high-pressure stage system, and a heat exchanger. The low-pressure stage system and the high-pressure stage system exchange heat in the heat exchanger.

[0026] As described above, the beneficial effects of this invention are as follows: the bipolar coupled heat pump can provide a higher outlet air temperature, thus basically or completely meeting the temperature required for dehumidification rotor regeneration. Regeneration of the dehumidification rotor can be completed with minimal or no auxiliary heating. Compared to traditional rotary dehumidifiers that rely entirely on electric or steam heaters, overall energy consumption is significantly reduced, achieving remarkable energy savings. Furthermore, the dehumidification and regeneration sections are independently set up. Existing rotary dehumidifiers can be modified by adding a regeneration section instead of purchasing entirely new energy-efficient rotary dehumidifiers. This significantly reduces enterprise costs and operational difficulties, and avoids the impact of large-scale equipment replacement on normal production operations.

[0027] Please refer to Figures 1-3 In one or more embodiments, the low-pressure stage system includes an evaporator and a low-level compressor; the high-pressure stage system includes a high-level compressor and a condenser. The evaporator, low-level compressor, and heat exchanger are connected in series to form the low-pressure stage system; the condenser, high-level compressor, and heat exchanger are connected in series to form the high-pressure stage system.

[0028] Please refer to Figures 1-3In one or more embodiments, a primary filter and a supply air fan, specifically an axial flow fan, are sequentially installed before the evaporator. The fan is used to introduce fresh air, and the primary filter is used to filter the fresh air. Generally, a fresh air valve and a filter can be installed before all fresh air inlets; the fresh air valve is used to control the airflow.

[0029] Please refer to Figures 1-3 In one or more embodiments, the regeneration unit includes a first cavity, a second cavity, and a third cavity connected in sequence; the evaporator is located in the first cavity, the condenser is located in the third cavity, and the low-stage compressor, heat exchanger, and high-stage compressor are located in the second cavity. The first cavity and the third cavity are in communication. That is, the evaporator and condenser are located in two separate spaces, the low-stage compressor, heat exchanger, and high-stage compressor are located in one separate space, and the first cavity and the third cavity are in communication, so that fresh air enters the condenser after passing through the evaporator.

[0030] Please refer to Figures 1-2 In one or more embodiments, a heat recovery unit is further included, and the first cavity and the third cavity are connected through the heat recovery unit. After passing through the evaporator, the gas enters the first cavity, then enters the heat recovery unit to exchange heat, and then enters the third cavity, then enters the condenser, and finally enters the regeneration zone of the dehumidification rotor.

[0031] In one or more embodiments, the heat recovery unit includes a return air inlet and a return air outlet; the return air inlet is connected to the exhaust vent of the regeneration zone of the dehumidifying impeller; the return air outlet is connected to the outside. Fresh air is cooled by the evaporator and enters the heat recovery unit from the first cavity. In the heat recovery unit, it exchanges heat with the high-temperature, high-humidity gas discharged from the regeneration zone of the dehumidifying impeller, and then enters the third cavity. After further heating by the condenser, it enters the regeneration zone of the dehumidifying impeller.

[0032] In one or more embodiments, the heat recovery unit is an aluminum foil core heat recovery unit.

[0033] Please refer to Figures 1-3 In one or more embodiments, the dehumidification unit includes a dehumidification chamber, and a first filter, a front surface cooler, a dehumidification impeller, and a rear surface cooler sequentially disposed within the dehumidification chamber. Fresh air passes through the above-mentioned device in sequence, achieving dehumidification and temperature regulation before being delivered to a designated space (such as a workshop).

[0034] In one or more embodiments, the dehumidification chamber has an air inlet between the first filter and the front surface cooler, and the first cavity is connected to the air inlet. One stream of fresh air is first cooled by the evaporator and then mixed with another stream of fresh air before entering the front surface cooler. This allows the fresh air to be cooled before entering the front surface cooler, thereby significantly reducing the cooling load on the front surface cooler.

[0035] In one or more embodiments, the third cavity is provided with a fresh air inlet and a fresh air outlet; the fresh air outlet is connected to the regeneration zone of the dehumidifying impeller. A temperature sensor is provided in the third cavity to detect the temperature of the air exiting the condenser. Another stream of fresh air enters the third cavity from the fresh air inlet, is heated by the condenser, and after its temperature rises, it is discharged from the fresh air outlet and sent to the regeneration zone of the dehumidifying impeller.

[0036] In one or more embodiments, an auxiliary heating device is also included; the auxiliary heating device is disposed on the pipeline connecting the bipolar coupled heat pump and the regeneration zone of the dehumidifier impeller. When the temperature of the fresh air heated by the condenser is lower than the regeneration temperature of the dehumidifier impeller, auxiliary heating can be applied to further raise the temperature before it is sent into the regeneration zone of the dehumidifier impeller. The temperature provided by the bipolar coupled heat pump is sufficient to ensure good regeneration of the dehumidifier impeller, and the auxiliary heating is selected for use or not based on the actual required regeneration temperature. When improving an existing dehumidifier, the auxiliary heating device is a heating device already present in the existing dehumidifier, which can be an electric heater, a steam heater, a gas heater, etc.

[0037] Example 1:

[0038] Reference Figure 1 An energy-saving rotary dehumidifier includes a dehumidification section 10 and a regeneration section 20;

[0039] The dehumidification unit 10 includes a dehumidification chamber, and a first filter 101, a front surface cooler 102, a dehumidification wheel 103 and a rear surface cooler 104 arranged sequentially inside the dehumidification chamber.

[0040] The regeneration unit 20 includes a bipolar coupled heat pump for supplying regenerated air to the regeneration zone of the dehumidifying rotor 103; the bipolar coupled heat pump includes a low-pressure stage system, a high-pressure stage system, and a heat exchanger 208; the low-pressure stage system includes an evaporator 204 and a low-level compressor 205; the high-pressure stage system includes a high-level compressor 206 and a condenser 207; the evaporator 204, the low-level compressor 205, and the heat exchanger 208 are connected in series; the high-level compressor 206, the condenser 207, and the heat exchanger 208 are connected in series.

[0041] A primary filter 209 and an air supply fan 210 are sequentially installed before the evaporator 204;

[0042] The regeneration unit 20 includes a first cavity 201, a second cavity 202, a third cavity 203, and an aluminum foil core heat recovery unit (heat recovery unit 30); the evaporator 204 is located in the first cavity 201, the condenser 207 is located in the third cavity 203, and the low-stage compressor 205, the heat exchanger 208, and the high-stage compressor 206 are located in the second cavity 202; the first cavity 201 and the third cavity 203 are connected through the aluminum foil core heat recovery unit;

[0043] The aluminum foil core heat recovery unit includes a return air inlet and a return air outlet; the return air inlet is connected to the exhaust port of the regeneration zone of the dehumidification rotor 103; and the return air outlet is connected to the outside.

[0044] The working principle of Example 1 is as follows: the refrigerant used in the low-pressure stage system is R410A, and the refrigerant used in the high-pressure stage system is R245fa. A fresh air supply (approximately 35°C, 75%RH) passes through the primary filter 209 under the action of the axial flow fan. After filtration, it enters the evaporator 204, where it is cooled (approximately 20°C) before entering the aluminum foil core heat recovery unit. Simultaneously, the return air (approximately 55°C) discharged from the regeneration zone of the dehumidification rotor 103 enters through the return air inlet. The fresh air and return air exchange heat in the aluminum foil core heat recovery unit. The return air (approximately 35°C) after heat exchange is discharged outdoors through the return air outlet. The fresh air, after heat exchange, is heated (approximately 40°C) and then enters the condenser 207. After passing through the condenser 207, the fresh air is heated again (about 100°C) and then enters the regeneration zone of the dehumidifier rotor 103 to regenerate the dehumidifier rotor 103. The regenerated air is return air (about 55°C) and is sent into the aluminum foil core heat recovery unit from the return air inlet.

[0045] Another stream of fresh air enters the dehumidification unit 10, passes through the first filter 101, the front surface cooler 102, the dehumidification rotor 103 and the rear surface cooler 104 in sequence, and is sent into the workshop after being dehumidified and conditioned.

[0046] When the fresh air temperature is 35℃ and 75%RH, and the regenerated air volume is 4000m³ / h, the energy-saving rotary dehumidifier of Example 1 saves 58% of the heating energy compared to the electric heating cost of the rotary dehumidifier and 38% compared to the steam heating cost.

[0047] Example 2:

[0048] Reference Figure 2 Based on Embodiment 1, it also includes an auxiliary heating device 40; the auxiliary heating device 40 is disposed on the pipeline connecting the regeneration zone of the bipolar coupled heat pump and the dehumidification rotor.

[0049] Example 3:

[0050] Reference Figure 3 An energy-saving rotary dehumidifier includes a dehumidification section 10 and a regeneration section 20;

[0051] The dehumidification section 10 is provided with a first filter 101, a front surface cooler 102, a dehumidification rotor 103 and a rear surface cooler 104 in sequence.

[0052] The regeneration unit 20 includes a bipolar coupled heat pump for supplying regenerated air to the regeneration zone of the dehumidifying rotor 103; the bipolar coupled heat pump includes a low-pressure stage system, a high-pressure stage system, and a heat exchanger 208; the low-pressure stage system includes an evaporator 204 and a low-level compressor 205; the high-pressure stage system includes a high-level compressor 206 and a condenser 207; the evaporator 204, the low-level compressor 205, and the heat exchanger 208 are connected in series; the high-level compressor 206, the condenser 207, and the heat exchanger 208 are connected in series.

[0053] A primary filter 209 and an air supply fan 210 are sequentially installed before the evaporator 204;

[0054] The regeneration unit 20 includes a first cavity 201, a second cavity 202, a third cavity 203, and an auxiliary heating device 40; the evaporator 204 is located in the first cavity 201, the condenser 207 is located in the third cavity 203, and the low-level compressor 205, the heat exchanger 208, and the high-level compressor 206 are located in the second cavity 202;

[0055] The dehumidification unit 10 is provided with an air inlet located between the first filter 101 and the front surface cooler 102, and the first cavity 201 is connected to the air inlet; the third cavity is provided with a fresh air inlet and a fresh air outlet; the fresh air outlet is connected to the regeneration zone of the dehumidification rotor 103;

[0056] A temperature sensor 211 is installed in the third cavity 203 to detect the temperature of the air outlet from the condenser 207.

[0057] The auxiliary heating device 40 is installed on the pipeline connecting the fresh air outlet and the regeneration zone of the dehumidification rotor 103.

[0058] The working principle of Example 3 is as follows:

[0059] One stream of fresh air, under the action of the air supply axial flow fan, first passes through the primary filter 209 and then enters the evaporator 204. After being cooled by the evaporator 204 (about 20°C), it is sent to the front surface cooler 102 of the dehumidification section 10. It then merges with another stream of fresh air to achieve cooling of the fresh air. The fresh air then passes through the front surface cooler 102, the dehumidification zone of the dehumidification rotor 103 and the rear surface cooler 104 in sequence before being sent into the workshop.

[0060] Another fresh air stream enters the condenser 207, and after being heated and dehumidified by the condenser 207 (approximately 95°C, 0.4%RH), it enters the auxiliary heater, is heated again (approximately 100°C), and then enters the regeneration zone of the dehumidification rotor 103 for regeneration.

[0061] When the fresh air temperature is 35℃ and 75%RH and the regenerated air volume is 4000m³ / h, the energy-saving rotary dehumidifier of Example 2 saves 47% of the heating energy compared to the electric heating cost of the rotary dehumidifier and 23% compared to the steam heating cost.

[0062] 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. An energy saving rotary dehumidifier, characterized by, The application relates to a dehumidification device comprising a dehumidification part and a regeneration part, wherein the dehumidification part comprises a dehumidification runner, the regeneration part comprises a bipolar coupled heat pump for providing regeneration air to a regeneration area of the dehumidification runner, the bipolar coupled heat pump is connected with the regeneration area of the dehumidification runner through a pipeline, the bipolar coupled heat pump comprises a low-pressure stage system, a high-pressure stage system and a heat exchanger, and the low-pressure stage system and the high-pressure stage system realize heat exchange in the heat exchanger.

2. The energy saving rotary dehumidifier according to claim 1, wherein The low-pressure stage system comprises an evaporator and a low-stage compressor, and the high-pressure stage system comprises a high-stage compressor and a condenser.

3. The energy saving rotary dehumidifier according to claim 2, wherein A primary filter and a supply air fan are sequentially arranged in front of the evaporator.

4. The energy saving rotary dehumidifier according to claim 2, wherein The regeneration part comprises a first cavity, a second cavity and a third cavity, the evaporator is arranged in the first cavity, the condenser is arranged in the third cavity, and the low-stage compressor, the heat exchanger and the high-stage compressor are arranged in the second cavity.

5. The energy saving rotary dehumidifier according to claim 4, wherein A heat recovery device is further arranged, and the first cavity and the third cavity are communicated through the heat recovery device.

6. The energy saving rotary dehumidifier according to claim 5, wherein The heat recovery device comprises an air return inlet and an air return outlet, the air return inlet is communicated with an air exhaust port of the regeneration area of the dehumidification runner, and the air return outlet is communicated with the outside.

7. The energy saving rotary dehumidifier according to claim 4, wherein A first filter, a front air cooler, the dehumidification runner and a rear air cooler are sequentially arranged in the dehumidification part.

8. The energy saving rotary dehumidifier according to claim 7, wherein An air inlet is arranged between the first filter and the front air cooler in the dehumidification part, and the first cavity is communicated with the air inlet.

9. The energy saving rotary dehumidifier according to claim 7, wherein The third cavity is provided with a fresh air inlet and a fresh air outlet, and the fresh air outlet is communicated with the regeneration area of the dehumidification runner.

10. The energy saving rotary dehumidifier according to claim 1, wherein An auxiliary heating device is further arranged, and the auxiliary heating device is arranged on the pipeline communicated with the regeneration area of the dehumidification runner.

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