Single-stage heat pump rotary dehumidifier

Abstract

The utility model discloses a single-stage heat pump rotary dehumidifier, and belongs to the technical field of rotary dehumidifiers. The utility model provides a single-stage heat pump rotary dehumidifier. The single-stage heat pump rotary dehumidifier comprises a fresh air path, and a core heat recoverer, an evaporator, a condenser and a regeneration area of a dehumidification rotary wheel which are sequentially arranged along the fresh air path, the compressor is connected with the evaporator and the condenser through a liquid path; and an air outlet of the regeneration area of the dehumidification rotating wheel is communicated with the core body heat recoverer. According to the rotary dehumidifier provided by the utility model, the single-stage heat pump is matched with the core body heat recoverer, regenerated air with higher temperature of 70-80 DEG C is provided for regeneration of the dehumidification rotary wheel, the use of an electric heater or a steam heater can be reduced or abandoned, the energy consumption is reduced, and the operation cost is obviously reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotary dehumidifiers, specifically relating to a single-stage heat pump rotary dehumidifier. Background Technology

[0002] Rotary dehumidifiers are high-efficiency dehumidification devices that dehumidify the air by using a moisture-absorbing rotor to adsorb moisture from the air and then expelling the adsorbed moisture through regeneration heating. They are widely used in industrial and commercial settings with strict humidity requirements. The main method for regeneration heating to remove adsorbed moisture involves heating the saturated rotor with high-temperature regeneration air. Specifically, after the regeneration air is heated to a certain temperature, it flows in the opposite direction to the processing air through the regeneration zone of the rotor. The high temperature causes the moisture in the pores of the adsorbent (such as silica gel or zeolite) in the rotor to vaporize and be expelled outdoors with the regeneration air, thus restoring the rotor's moisture absorption capacity. Common regeneration heating methods include electric heating, steam heating, gas heating, and industrial waste heat. However, these methods have drawbacks such as high energy consumption, burnout of heating elements, carbon buildup or coking, and potential problems like incomplete combustion, excessively high exhaust temperatures, and significant heat loss. 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 single-stage heat pump dehumidifier, including a fresh air duct, and a regeneration zone of a core heat recovery unit, an evaporator, a condenser and a dehumidification wheel arranged sequentially along the fresh air duct;

[0005] It also includes a compressor connected to the evaporator and condenser via a liquid circuit; the exhaust port of the regeneration zone of the dehumidifying impeller is connected to the core heat recovery unit.

[0006] Furthermore, along the fresh air path, there are sequentially arranged a fresh air filter, a fan, a core heat recovery unit, an evaporator, a condenser, and a regeneration zone for a dehumidifying impeller.

[0007] Furthermore, the fresh air filter is a panel filter.

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

[0009] Furthermore, it also includes a heat pump cabinet, which has an air inlet and an air outlet, and a fresh air filter, a fan, a core heat recovery unit, an evaporator, a compressor, a condenser and a temperature sensor are arranged sequentially from the air inlet to the air outlet; the air outlet is connected to the regeneration zone of the dehumidification impeller.

[0010] Furthermore, it also includes a dehumidifier cabinet, with a dehumidifier wheel installed inside the cabinet.

[0011] Furthermore, the dehumidifier cabinet has an air inlet and an air outlet, and a processing area consisting of a pre-filter and a dehumidifier impeller is arranged sequentially from the air inlet to the air outlet.

[0012] Furthermore, the dehumidifier cabinet has a regeneration air inlet and a regeneration air outlet, and along the regeneration air inlet to the regeneration air outlet, there are sequentially arranged a regeneration zone of the dehumidifier rotor and a regeneration exhaust fan.

[0013] Furthermore, the core heat recovery unit includes a return air duct and a fresh air duct; the regenerated air outlet is connected to the return air duct.

[0014] Furthermore, a primary filter, a pre-cooler, a dehumidifying impeller treatment zone, and a rear cooler are sequentially arranged from the air inlet to the air outlet.

[0015] The beneficial effects of this utility model are as follows: The rotary dehumidifier provided by this utility model adopts a single-stage heat pump and a core heat recovery unit to provide regeneration air at a relatively high temperature of 70~80℃ for the regeneration of the dehumidification rotor, thereby reducing or eliminating the use of the original equipment's electric heater or steam heater, reducing energy consumption, and thus significantly reducing operating costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the system structure of a specific embodiment of the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of a specific embodiment of the present utility model;

[0018] Label Explanation:

[0019] 1. Fresh air filter; 2. Fan; 3. Core heat recovery unit; 4. Evaporator; 5. Condenser; 6. Compressor; 7. Dehumidifier wheel; 71. Regeneration zone; 72. Processing zone; 8. Regeneration exhaust fan; 9. Temperature sensor. Detailed Implementation

[0020] 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.

[0021] Please refer to Figure 1 as well as Figure 2 A single-stage heat pump rotary dehumidifier has a fresh air duct and a regeneration zone consisting of a core heat recovery unit, an evaporator, a condenser, and a dehumidification rotor arranged sequentially along the fresh air duct.

[0022] It also includes a compressor connected to the evaporator and condenser via a liquid circuit; the exhaust port of the regeneration zone of the dehumidifying impeller is connected to the core heat recovery unit.

[0023] As described above, the beneficial effects of this invention are as follows: The evaporator, condenser, and compressor, in conjunction with an expansion valve or throttling valve, form a heat pump system. The refrigerant absorbs heat in the evaporator and becomes a gas. The evaporator outlet is connected to the compressor inlet to deliver the evaporated gas. The compressor compresses the low-pressure gas from the evaporator into a high-pressure gas, increasing its temperature and pressure. The compressor outlet is connected to the condenser inlet. In the condenser, the high-temperature, high-pressure gas from the compressor releases heat, cools, and condenses into a liquid. The condenser outlet is connected to the expansion valve or throttling valve, and then returns to the evaporator, completing the cycle. Meanwhile, the fresh air first passes through the regeneration air path and then through the core heat recovery unit to absorb heat. After heat transfer in the evaporator, the cooled regeneration air is heated and dehumidified by the condenser before being sent to the regeneration zone to regenerate the dehumidification impeller. Meanwhile, the regenerated air discharged from the dehumidifying rotor has a temperature of approximately 50°C and is valuable for recycling. By recycling it into the core heat recovery unit, it exchanges heat with the fresh air, raising the fresh air temperature and thus providing more heat for the evaporator's heat exchange. This avoids the energy waste caused by directly discharging the regenerated air outdoors. Preheating the air that will exchange heat with the evaporator increases the evaporator's evaporation temperature. Because the temperature difference between the preheated air and the evaporator increases, the amount of heat exchanged also increases. Therefore, the temperature difference between the evaporator and the flowing air can be appropriately reduced, thus increasing the set evaporation temperature. A higher evaporation temperature results in higher energy efficiency for the heat pump system and greater heat release at the condenser end, allowing the air temperature to be raised to the higher temperature required for rotor regeneration.

[0024] The regeneration zone, consisting of a fresh air filter, a fan, a core heat recovery unit, an evaporator, a condenser, and a dehumidification impeller, is arranged sequentially along the fresh air path.

[0025] The fresh air filter is a panel filter.

[0026] As described above, installing a fresh air filter can effectively prevent these large particles from entering the system and protect downstream equipment.

[0027] The fan is either an axial flow fan or an EC fan. The fan is used to introduce fresh air.

[0028] Among them, reference Figure 2 As shown, it also includes a heat pump cabinet, which has an air inlet and an air outlet. A fresh air filter, a fan, a core heat recovery unit, an evaporator, a compressor, a condenser, and a temperature sensor are arranged sequentially from the air inlet to the air outlet. The air outlet is connected to the regeneration zone of the dehumidification wheel through a pipeline.

[0029] This also includes a dehumidifier cabinet, with a dehumidifier wheel installed inside the cabinet.

[0030] As described above, the heat pump cabinet is independent of the dehumidification cabinet. The dehumidification cabinet is the original structure of the rotary dehumidifier. By setting up a separate heat pump cabinet, it is convenient to retrofit the existing rotary dehumidifier. The retrofit can be achieved by connecting the two through air ducts, avoiding the capital investment caused by replacing a large amount of equipment and reducing resource waste. The fresh air heated by the heat pump cabinet enters the regeneration zone of the dehumidifier rotor after passing through the heater of the original rotary dehumidifier. At this time, the heater can be operated to further heat the air or it can be completely shut down.

[0031] The dehumidifier cabinet has an air inlet and an air outlet, with a pre-filter and a dehumidifying impeller arranged sequentially from the air inlet to the air outlet. Fresh air is dehumidified and temperature-controlled before being delivered to designated areas such as workshops and factories.

[0032] The dehumidifier cabinet has a regeneration air inlet and a regeneration air outlet. Along the regeneration air inlet to the regeneration air outlet, there is a regeneration zone for the dehumidifier rotor and a regeneration exhaust fan.

[0033] As described above, the heated fresh air from the condenser is used as regeneration air. It enters through the regeneration air inlet to regenerate the regeneration zone of the dehumidifier rotor, and then is discharged from the regeneration air outlet under the action of the regeneration exhaust fan.

[0034] The core heat recovery unit includes a return air duct and a fresh air duct; the regenerated air outlet is connected to the return air duct. The core heat recovery unit is an aluminum foil core heat recovery unit.

[0035] As described above, the fresh air passes through the fresh air duct and exchanges heat with the regenerated air in the return air duct. The fresh air continues to flow towards the evaporator, while the regenerated air is discharged outdoors, thus realizing the recovery of heat from the regenerated air.

[0036] The system includes a pre-filter, a pre-cooler, a dehumidifying impeller treatment zone, and a post-cooler, arranged sequentially from the air inlet to the air outlet.

[0037] As described above, the pre-cooler primarily pre-cools and pre-dehumidifies the air entering the dehumidification rotor. Since the outside fresh air is typically warm and humid, its direct entry into the dehumidification rotor would affect the dehumidification effect and the rotor's lifespan. The post-cooler reduces the temperature of the treated air to within the range required by the process, ensuring that the supply air temperature meets the usage requirements.

[0038] Please refer to Figure 1 and 2 Embodiment 1 of this utility model is as follows:

[0039] A single-stage heat pump rotary dehumidifier includes a heat pump cabinet and a dehumidification cabinet;

[0040] The heat pump cabinet has an air inlet and an air outlet. Along the air inlet to the air outlet, a fresh air filter 1, a fan 2, an aluminum foil core heat recovery unit 3, an evaporator 4, a compressor 6, a condenser 5, and a temperature sensor 9 are arranged in sequence.

[0041] The dehumidifier has an air inlet, an air outlet, a regenerated air inlet, and a regenerated air outlet; from the air inlet to the air outlet, there are sequentially arranged a pre-filter, a pre-cooler, a processing zone 72 of the dehumidifier impeller 7, and a post-cooler; from the regenerated air inlet to the regenerated air outlet, there are sequentially arranged a regeneration zone of the dehumidifier impeller and a regeneration exhaust fan.

[0042] The air outlet and the regenerated air inlet are connected by a pipeline;

[0043] The aluminum foil core heat recovery unit 3 includes a return air duct and a fresh air duct; the regenerated air outlet is connected to the return air duct;

[0044] The evaporator and condenser are connected to the compressor via a liquid circuit containing refrigerant.

[0045] The working principle of this utility model is as follows:

[0046] A stream of fresh air enters through the air inlet, passes through the pre-filter, the front surface cooler, the processing area 72 of the dehumidification rotor 7, and the rear surface cooler in sequence, and is then dehumidified and discharged from the air outlet to the designated area.

[0047] Another stream of fresh air, at approximately 35°C, enters through the air inlet. Filtered by the fresh air filter 1 by the fan 2, it then passes through the aluminum foil core heat recovery unit 3 and is heated to approximately 40°C. It exchanges heat with the regenerated air discharged from the regeneration zone 71 of the dehumidifying impeller 7. The air then passes through the evaporator 4, where it is cooled to approximately 25°C. Finally, it passes through the condenser 5, where it is heated to 70-80°C. A temperature sensor 9 is used to detect the temperature of the air discharged from the condenser. After heating, the air becomes regenerated air and is sent to the regeneration zone 71 to regenerate the impeller. Finally, it is sent to the aluminum foil core heat recovery unit by the regeneration exhaust fan 8, where it exchanges heat with the subsequent stream of fresh air.

[0048] Embodiment two of this utility model is as follows:

[0049] Based on Example 1, both the fresh air filter and the pre-filter are panel filters;

[0050] Both the blower and the regenerated air outlet are EC blowers.

[0051] 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 single-stage heat pump rotary dehumidifier, characterized by, It includes a fresh air duct, and a regeneration zone consisting of a core heat recovery unit, an evaporator, a condenser, and a dehumidifying impeller arranged sequentially along the fresh air duct; It also includes a compressor connected to the evaporator and condenser via a liquid circuit; the exhaust port of the regeneration zone of the dehumidifying impeller is connected to the core heat recovery unit.

2. The single-stage heat pump rotary dehumidifier of claim 1, wherein, Along the fresh air path, there are sequentially arranged a fresh air filter, a fan, a core heat recovery unit, an evaporator, a condenser, and a regeneration zone for a dehumidifying impeller.

3. The single-stage heat pump rotary dehumidifier according to claim 2, characterized in that, The fresh air filter is a plate filter.

4. The single stage heat pump rotary dehumidifier of claim 2 wherein, The fan is an axial flow fan or an EC fan.

5. The single stage heat pump rotary dehumidifier of claim 1 wherein, It also includes a heat pump cabinet, which has an air inlet and an air outlet. A fresh air filter, a fan, a core heat recovery unit, an evaporator, a compressor, a condenser, and a temperature sensor are arranged sequentially from the air inlet to the air outlet. The air outlet is connected to the regeneration zone of the dehumidification impeller.

6. The single stage heat pump rotary dehumidifier of claim 1 wherein, It also includes a dehumidifier cabinet, with a dehumidifier wheel installed inside the cabinet.

7. The single stage heat pump rotary dehumidifier of claim 6 wherein, The dehumidifier cabinet has an air inlet and an air outlet, and a pre-filter and a dehumidifier wheel are arranged sequentially along the air inlet to the air outlet.

8. The single stage heat pump rotary dehumidifier of claim 6 wherein, The dehumidifier cabinet has a regeneration air inlet and a regeneration air outlet. Along the regeneration air inlet to the regeneration air outlet, there is a regeneration zone for the dehumidifier rotor and a regeneration exhaust fan.

9. The single stage heat pump rotary dehumidifier of claim 8 wherein, The core heat recovery unit includes a return air duct and a fresh air duct; the regenerated air outlet is connected to the return air duct.

10. The single stage heat pump rotary dehumidifier of claim 7 wherein, A primary filter, a pre-cooler, a dehumidifying impeller treatment zone, and a rear cooler are sequentially arranged from the air inlet to the air outlet.

Images