Heat pump type high-temperature low-humidity drying air cabinet

Abstract

The utility model discloses a heat pump type high-temperature low-humidity drying air cabinet, and belongs to the technical field of dehumidification devices. The utility model provides a heat pump type high-temperature low-humidity drying air cabinet which comprises an evaporator, a water baffle, a condenser and an air supply outlet which are sequentially arranged along an air path. The condenser is connected with the air supply outlet through a reducing pipeline; and an aerogel layer is arranged on the outer surface of the reducing pipeline. The heat pump system is introduced, all parts of the heat pump system are reasonably arranged, the water baffle and the variable-diameter pipeline provided with the aerogel layer are used in a matched mode, air can be effectively dehumidified and heated and then fed into a designated space, the air cabinet has the advantages of being low in energy consumption and high in heat efficiency, and the operation and maintenance cost of the air cabinet can be remarkably reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of dehumidification devices, specifically relating to a heat pump type high temperature and low humidity drying fan cabinet. Background Technology

[0002] Air handling units (AHUs) are used for temperature and humidity control of mixed air and are widely used in industrial production, commercial settings, medical fields, public facilities, special locations, and agriculture. Currently, the commonly used AHU structures in industrial applications are shown below. Figure 1 As shown, the air handling unit contains a surface cooler and a heater. The surface cooler supplies water at 7°C and returns water at 12°C, achieving cooling and dehumidification of the mixed air. The heater's heating coil supplies water at 80°C and returns water at 70°C, achieving high-temperature air supply. The chilled water used is produced in the factory's refrigeration room, and the hot water is produced by heating ambient temperature water with municipal steam introduced from the factory through a plate heat exchanger. This type of air handling unit suffers from high energy losses, low thermal efficiency, high energy consumption of the surface cooler and heater, and high operating costs. There is an urgent need for a new type of air handling unit with low energy consumption and high thermal efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a high-temperature, low-humidity drying fan with low energy consumption and high thermal efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a heat pump type high temperature and low humidity drying air cabinet, including an evaporator, a baffle plate, a condenser and an air outlet arranged in sequence along the air path; the condenser and the air outlet are connected by a variable diameter pipe; the outer surface of the variable diameter pipe is provided with an aerogel layer.

[0005] Furthermore, the variable diameter pipeline is a variable diameter flange.

[0006] Furthermore, the thickness of the aerogel layer is 10~30mm.

[0007] Furthermore, it also includes a cabinet, which is equipped with a fresh air inlet, a return air inlet, and a supply air outlet.

[0008] Furthermore, it also includes a filter, which is disposed in front of the evaporator along the air path.

[0009] Furthermore, the filter is a pre-filter or a medium-efficiency filter.

[0010] Furthermore, it also includes a fan, which is disposed between the filter and the evaporator.

[0011] Furthermore, it also includes a heat pump housing; the heat pump housing is equipped with a compressor and a throttling valve; the compressor, throttling valve, evaporator and condenser are connected by a liquid circuit.

[0012] Furthermore, the water baffle is a corrugated water baffle, a honeycomb water baffle, a V-shaped folded water baffle, or a W-shaped folded water baffle.

[0013] Furthermore, the baffle plate is positioned close to the evaporator.

[0014] The beneficial effects of this utility model are as follows: By introducing a heat pump system and rationally arranging the various components of the heat pump system, and by using a baffle plate and a variable diameter pipe with an aerogel layer, this utility model can effectively dehumidify and heat the air before sending it into the designated space. It also features low energy consumption and high thermal efficiency, which can significantly reduce the cost of operation and maintenance of the air handling unit. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the existing air handling unit.

[0016] Figure 2 This is a schematic diagram of the structure of a heat pump type high temperature and low humidity drying fan cabinet according to a specific embodiment of the present invention;

[0017] Label Explanation:

[0018] 1. Cabinet; 11. Filter; 12. Fan; 13. Evaporator; 14. Water baffle; 15. Condenser; 16. Reducing flange;

[0019] 101. Fresh air inlet; 102. Return air inlet; 103. Supply air outlet;

[0020] 2. Heat pump housing; 21. Compressor; 22. Throttling valve. Detailed Implementation

[0021] 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.

[0022] Please refer to Figure 2 A heat pump type high temperature and low humidity drying air cabinet includes an evaporator, a baffle plate, a condenser and an air outlet arranged sequentially along the air path; the condenser and the air outlet are connected by a variable diameter pipe; the outer surface of the variable diameter pipe is provided with an aerogel layer.

[0023] As can be seen from the above description, the beneficial effects of this utility model are as follows: Although it is known that heat pump systems have the characteristic of low energy consumption, this utility model addresses the following: Figure 1Existing air handling units cannot directly incorporate heat pumps or replace their heaters. Adding a heat pump system directly would result in problems such as condensate from the evaporator floating to the condenser surface, absorbing heat, and re-vaporizing, causing the humidity of the air treated by the evaporator to rise again. Additionally, the evaporation and heat absorption on the heater surface would consume some of the heater's heat. This application abandons the original surface cooler and heater, introducing a heat pump system's evaporator and condenser into the air handling unit. With one end providing cooling and the other providing heating, "common cooling and heating" is achieved within a single air handling unit, achieving a comprehensive energy efficiency of over 5. Furthermore, a baffle plate is installed immediately after the evaporator to effectively prevent condensate from floating to the condenser. Combined with a variable-diameter pipe with an aerogel layer for air delivery, the air duct after the condenser is effectively insulated, reducing heat loss and the impact of high-temperature air on the equipment cabinet and internal components, ensuring effective heating and dehumidification. The heat pump type high temperature and low humidity drying air handling unit provided by this utility model has an evaporation temperature of 0~5℃. Compared with the surface cooler, the moisture content of the processed air is lower, the air supply is drier, and the drying performance of the air handling unit is better.

[0024] In one or more embodiments, the reducing pipeline is a reducing flange. Reducing flanges provide a secure connection, reliable sealing, and easy installation.

[0025] In one or more embodiments, the thickness of the aerogel layer is 10-30 mm. The thermal conductivity of the aerogel is only about 0.015 W / (m·K), far lower than that of traditional insulation materials, providing excellent insulation and reducing heat loss. A thickness of 20 mm is optional and can be adapted to most current air handling units. The thickness of the aerogel layer can be selected according to the supply air temperature. When the supply air temperature is low, the aerogel layer thickness is lower, such as 10 mm, 15 mm, or 18 mm; when the supply air temperature is high, the aerogel thickness is higher, such as 25 mm, 28 mm, or 30 mm.

[0026] In one or more embodiments, the system further includes a cabinet with a fresh air inlet, a return air inlet, and a supply air outlet. The fresh air and return air form a mixed airflow, which undergoes subsequent heating and dehumidification treatment. By effectively handling the return air, the quality of the supplied air can be guaranteed, the content of pollutants can be reduced, and the concentration of carbon dioxide can be diluted.

[0027] In one or more embodiments, a filter is also included, disposed along the air path before the evaporator. This pre-treats the air entering the evaporator, removing large particles of dust and impurities to ensure clean air intake and protect the internal equipment of the air handling unit.

[0028] In one or more embodiments, the filter is a pre-filter or a medium-efficiency filter. The choice between a pre-filter and a medium-efficiency filter depends on the required level of cleanliness of the space to be ventilated.

[0029] In one or more embodiments, a fan is also included, disposed between the filter and the evaporator. The fan delivers air (fresh air and / or return air) to the target area to achieve air circulation and distribution.

[0030] In one or more embodiments, a heat pump housing is also included; the heat pump housing houses a compressor and a throttling valve; the compressor, throttling valve, evaporator, and condenser are connected via liquid circuits. The structure of the heat pump system, excluding the evaporator and condenser, is independently housed in a modular cabinet outside the air handling unit. This cabinet can be directly placed on top of the air handling unit, facilitating both the installation of new equipment and the energy-saving retrofitting of existing air handling units. By providing interfaces on the cabinet and heat pump housing, direct connection to the evaporator and condenser piping within the cabinet is possible, significantly reducing on-site construction complexity and greatly shortening the construction period.

[0031] In one or more embodiments, the specific type of water baffle used can be selected according to the environment in which the air handling unit is applied. Depending on the material, the water baffle can be a stainless steel water baffle, an aluminum alloy water baffle, or a galvanized steel water baffle; depending on the structure, the water baffle can be a corrugated water baffle, a honeycomb water baffle, a V-shaped folded water baffle, or a W-shaped folded water baffle; depending on the function, the water baffle can be a high-efficiency water-blocking type, a low-resistance energy-saving type, or a corrosion-resistant and mildew-resistant type.

[0032] In one or more embodiments, the baffle plate is disposed close to the evaporator. The baffle plate, positioned behind and close to the evaporator, effectively prevents condensate from drifting towards the condenser.

[0033] Please refer to Figure 2 The embodiments of this utility model are as follows:

[0034] A heat pump type high temperature and low humidity drying air cabinet includes a cabinet body 1 and a heat pump box body 2;

[0035] Inside the cabinet 1, a filter 11, a fan 12, an evaporator 13, a baffle plate 14, and a condenser 15 are arranged sequentially along the air duct; the baffle plate 14 is set close to the evaporator 13; the baffle plate 14 and the condenser 15 are connected by an air duct.

[0036] The cabinet is equipped with a fresh air inlet 101, a return air inlet 102, and an air supply outlet 103; the condenser 15 and the air supply outlet 103 are connected by a reducing flange 16, and the outer surface of the reducing flange 16 is provided with an aerogel layer.

[0037] Filter 11 is a pre-filter, and fan 12 is an EC fan;

[0038] The heat pump housing 2 is equipped with a compressor 21 and a throttle valve 22; the compressor 21, the throttle valve 22, the evaporator 13 and the condenser 14 are connected by a liquid circuit; the liquid circuit contains refrigerant.

[0039] The working principle of this utility model is as follows: Under the action of the fan 12, fresh air and return air enter the cabinet 1 from the fresh air inlet 101 and the return air inlet 102 respectively, forming mixed air. Then, the air passes through the filter 11 and the evaporator 13 in sequence. After being cooled and dehumidified by the evaporator 13, the air passes through the baffle 14. The condensate carried by the air is blocked by the baffle and enters the condenser 15. After being heated by the condenser 15, the air is sent to the designated space through the air outlet 103 through the reducing flange 16.

[0040] 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 heat pump type high temperature low humidity drying air cabinet, characterized by, It includes an evaporator, a baffle plate, a condenser, and an air outlet arranged sequentially along the air path; the condenser and the air outlet are connected by a variable diameter pipe; the outer surface of the variable diameter pipe is provided with an aerogel layer.

2. The heat pump type high-temperature low-humidity drying air cabinet according to claim 1, characterized by, The variable diameter pipeline is a variable diameter flange.

3. The heat pump type high-temperature low-humidity drying air cabinet according to claim 1, characterized by, The thickness of the aerogel layer is 10~30mm.

4. The heat pump type high-temperature low-humidity drying air cabinet according to claim 1, characterized by, It also includes a cabinet, which is equipped with a fresh air inlet, a return air inlet and a supply air outlet.

5. The heat pump type high-temperature low-humidity drying air cabinet according to claim 4, characterized by, It also includes a filter, which is disposed in front of the evaporator along the air path.

6. The heat pump type high-temperature low-humidity drying air cabinet according to claim 5, wherein The filter is a pre-filter or a medium-efficiency filter.

7. The heat pump type high-temperature low-humidity drying air cabinet according to claim 5, characterized by It also includes a fan, which is positioned between the filter and the evaporator.

8. The heat pump type high-temperature low-humidity drying air cabinet according to claim 4, characterized by It also includes a heat pump housing; the heat pump housing is equipped with a compressor and a throttle valve; the compressor, throttle valve, evaporator and condenser are connected by a liquid circuit.

9. The heat pump type high-temperature low-humidity drying air cabinet according to claim 1, characterized by, The water baffle is a corrugated water baffle, a honeycomb water baffle, a V-shaped folded water baffle, or a W-shaped folded water baffle.

10. The heat pump type high temperature and low humidity drying fan according to claim 1, characterized in that, The baffle plate is positioned close to the evaporator.

Images