A heat pump drying apparatus

Abstract

The utility model discloses a kind of heat pump drying equipment, including heat preservation shell, evaporator module and condenser module are sequentially connected in it, air inlet is set to one end close to evaporator module, air outlet is set to one end close to condenser module, air inlet and air outlet form airflow passage area between them, baffle is set at heat preservation shell inside, air inlet and air outlet, baffle and evaporator module, condenser module and heat preservation shell side wall are cut off to form low-temperature area not affected by airflow, heat preservation shell is partitioned to set, and the manufacturing cost of heat preservation shell is saved;Evaporator module and the pipeline of condenser module are centrally laid in low-temperature area, are not affected by high-temperature airflow to ensure the working efficiency of evaporator module and condenser module;Partition isolation avoids the dissipation of high-temperature airflow, and the working efficiency of drying system is improved;Layout is reasonable, space utilization is high, meet the maximum transportation size limit condition of large-scale drying equipment, facilitate maintenance and maintenance.

Description

Technical Field

[0001] This utility model relates to a dryer, and more particularly to a large-scale heat pump drying device. Background Technology

[0002] Material drying is a highly energy-intensive process, accounting for a significant portion of the nation's total energy consumption, according to statistics. However, the thermal efficiency of traditional drying equipment is only 25%–50%, and the drying process particularly affects the components and structure of heat-sensitive materials. Heat pump dryers, on the other hand, are highly efficient and energy-saving drying equipment with advantages such as low energy consumption, minimal environmental pollution, high drying quality, and wide applicability, suitable for drying various materials. A heat pump dryer mainly consists of the following key components: compressor, evaporator, condenser, expansion valve (or throttling device), control system, fan / circulation system, and drying chamber. The refrigerant undergoes a thermodynamic cycle of compression, condensation, throttling, and re-evaporation, transferring heat to the target material via hot air and removing moisture from the material. During this process, different parts of the equipment operate at different temperatures, requiring different insulation materials. Furthermore, heat pump dryers have numerous components and connecting pipes, resulting in a complex structure. Large-scale heat pump dryers, in particular, have large internal components and are subject to transportation limitations such as a width limit of 2.4 meters and a height limit of 2.7 meters. Therefore, the internal layout needs to be as compact as possible, with a rational spatial distribution, simple piping layout, low cost, convenient internal assembly, sufficient internal maintenance space, and a simple and aesthetically pleasing overall appearance. This necessitates a comprehensive consideration of the structural layout of each component of large-scale heat pump dryers, taking into account factors such as simplicity, rationality, economy, and transportation size constraints. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a large-scale heat pump drying equipment that meets the structural layout requirements of large heat pump dryers while minimizing manufacturing and maintenance costs, and also meets transportation restrictions.

[0004] Technical Solution: The heat pump drying equipment of this utility model includes an insulated shell. An evaporator module and a condenser module are sequentially connected inside the insulated shell. An air inlet is provided at one end of the insulated shell near the evaporator module, and an air outlet is provided at the other end near the condenser module. An airflow channel area is formed between the air inlet and the air outlet. A partition is provided inside the insulated shell, at the air inlet and the air outlet. The partition is separated from the evaporator module, the condenser module and the side wall of the insulated shell to form a low-temperature area that is not affected by the airflow channel. The pipelines of the evaporator module and the condenser module are arranged in the low-temperature area.

[0005] Furthermore, the partition includes a first transverse partition perpendicular to the airflow direction and a second transverse partition parallel to the airflow direction, horizontally disposed below the evaporator module and the condenser module; and a first vertical partition and a second vertical partition, vertically disposed between the evaporator module and the side wall of the insulation shell parallel to the airflow direction and between the condenser module and the side wall of the insulation shell perpendicular to the airflow direction. The partition divides the space inside the insulation shell into an airflow channel area through which airflow passes and a low-temperature area that blocks airflow. The airflow channel area includes a low-temperature section from the air inlet to the condenser module and a high-temperature section from the condenser module to the air outlet. The high-temperature section is higher in temperature than the low-temperature section and the low-temperature area. The piping is laid in the low-temperature zone, and the baffle isolates the piping from the influence of the high-temperature airflow, thus ensuring the working efficiency of the evaporator and condenser modules while preventing the loss of high-temperature airflow and improving drying efficiency. The baffle is sealed to the evaporator module, condenser module and insulation shell, further improving the airtightness of the airflow channel area and the low-temperature zone. In addition, the temperature difference between the high-temperature section and the low-temperature zone of the airflow channel is large, so different types of thermal insulation materials need to be selected for the insulation shell. The high-temperature section of the airflow channel has a higher temperature, so a thermal insulation material with better temperature resistance is selected, while the low-temperature section and the low-temperature zone of the airflow channel have a relatively lower temperature, so a thermal insulation material with slightly lower temperature resistance can be selected, thereby saving manufacturing costs.

[0006] Furthermore, the partition also includes a third vertical partition that is vertically arranged on the side wall of the evaporator module and the condenser module, parallel to the side wall near the low-temperature region, to further ensure the isolation between the high-temperature section and the low-temperature section of the airflow channel and the low-temperature region.

[0007] Furthermore, the airflow channel area occupies 2 / 3 to 9 / 10 of the total volume of the insulation shell. This reasonable proportion ensures the temperature difference between the high-temperature and low-temperature zones of the airflow channel area, meets the space requirements for pipeline layout, and also maximizes the space available in the airflow channel area to meet the specifications of the evaporator and condenser modules.

[0008] Furthermore, the pipeline is laid in a low-temperature area to prevent the medium inside the pipeline from being affected by high-temperature airflow, especially the high-temperature airflow at the air outlet. At the same time, it can reduce the temperature resistance requirements of the pipeline insulation material. In addition, the reasonable layout can save space, and the relatively concentrated pipeline layout is also convenient for maintenance and repair.

[0009] Furthermore, a filter device is provided at the front end of the evaporator module to remove impurities carried in the gas.

[0010] Furthermore, a water collection tray is provided at the bottom of the evaporator module to collect condensate and then drain it to the outside of the housing through a pipe.

[0011] Furthermore, the insulation materials for the low-temperature zone of the insulation shell and the low-temperature section of the airflow channel are resistant to -100℃ to 100℃, while the insulation materials for the high-temperature section of the airflow channel are resistant to -100℃ to 200℃. Insulation materials with different temperature resistance requirements have different prices, different insulation effects, and different construction processes. Zoning can save manufacturing costs.

[0012] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. The partitioned design of the insulation shell saves on the manufacturing cost of the insulation shell; 2. The pipelines inside the insulation shell are centrally located in the low-temperature zone, avoiding the influence of the high-temperature airflow and ensuring the working efficiency of the evaporator and condenser modules; 3. The partitioned isolation avoids the loss of temperature from the high-temperature airflow, improving the working efficiency of the drying system; 4. The overall layout is reasonable and the space utilization rate is high, meeting the maximum transport size restrictions of large drying equipment; 5. The centralized pipeline layout facilitates maintenance and repair; 6. The overall appearance of the equipment is simple and beautiful. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0015] Figure 3 This is a structural schematic diagram of the third embodiment of the present utility model. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0017] Example 1

[0018] like Figure 1 and 2The heat pump drying equipment shown includes an insulated shell 1, inside which an evaporator module 2 and a condenser module 3 are sequentially connected. The evaporator module 2 has a filter device 4 at its front end and a water collection tray at its bottom. The insulated shell 1 has an air inlet 5 near the evaporator module 2 and an air outlet 6 near the condenser module 3, forming an airflow channel area between the air inlet 5 and the air outlet 6. Inside the insulated shell 1, at the air inlet 5 and the air outlet 6, a partition is installed, which separates the evaporator module 2, the condenser module 3, and the side wall of the insulated shell 1 to form a low-temperature area unaffected by airflow. The partition includes a first horizontal partition 11 perpendicular to the airflow direction and a second horizontal partition 7 parallel to the airflow direction, horizontally positioned below the evaporator module 2 and the condenser module 3; and a first vertical partition 9 and a second vertical partition 10, vertically positioned between the evaporator module 2 and the side wall of the insulation shell 1 parallel to the airflow direction. This divides the space inside the insulation shell 1 into an airflow channel area through which airflow passes and a low-temperature area that blocks airflow. The airflow channel area includes a low-temperature section from the air inlet 5 to the condenser module 3 and a high-temperature section from the condenser module 3 to the air outlet 6. The partition isolates the airflow from the high-temperature section. Pipes 8 of the evaporator module 2 and the condenser module 3 are arranged from top to bottom parallel to the airflow direction in the low-temperature area to avoid the pipes 8 being affected by the airflow from the high-temperature section of the airflow channel, thus improving the working efficiency of the evaporator module 2 and the condenser module 3. Pipes 8 extend from the air inlet 5 to the outside of the insulation shell 1 and connect to other equipment. The partition is airtightly connected to the evaporator module 2, condenser module 3, and insulation shell 1, further preventing the high-temperature airflow from affecting the low-temperature area. The temperature difference between the high-temperature section and the low-temperature area of ​​the airflow channel is about 100℃. The insulation material of the low-temperature area of ​​the insulation shell 1 and the low-temperature section of the airflow channel is resistant to -100℃ to 100℃, while the insulation material of the high-temperature section of the airflow channel is resistant to -100℃ to 200℃. This zoned design saves manufacturing costs.

[0019] The airflow channel area occupies 2 / 3 to 9 / 10 of the total volume of the insulation shell. A sufficiently large low-temperature area is necessary to create a low-temperature zone unaffected by the high-temperature section of the airflow channel, while also providing enough space for piping 8. The low-temperature area cannot be too large, otherwise it will limit the specifications of the evaporator module 2 and condenser module 3, thus limiting the power of the drying system and affecting its overall dimensions. Furthermore, due to transportation height and width restrictions, the above-described structure for evaporator module 2 and condenser module 3 of the heat pump drying system meets transportation limitations such as a width limit of 2.4 meters and a height limit of 2.7 meters. The low-temperature area occupies 1 / 3 to 1 / 10 of the total volume, maximizing the space utilization of the insulation shell 1 and maximizing the function of the drying equipment within a limited space, while also meeting transportation requirements for easy promotion and application.

[0020] Example 2

[0021] like Figure 2 As shown, unlike Embodiment 1, the partition also includes a third vertical partition 12, which is vertically arranged on the side wall of the evaporator module 2 and the condenser module 3, parallel to the side wall near the low temperature region, to further improve the isolation between the high temperature section and the low temperature region of the airflow channel.

[0022] Example 3

[0023] like Figure 3 As shown, unlike Embodiments 1 or 2, the pipe 8 extends from one side of the air outlet 6 to the outside of the insulation shell 1 and connects with other equipment. The direction of the connection between the pipe 8 and the external equipment can be set according to the space requirements of the application scenario, thereby improving the applicability of the drying system.

Claims

1. A heat pump drying device, comprising an insulated outer shell (1), wherein an evaporator module (2) and a condenser module (3) are sequentially connected inside the insulated outer shell (1), wherein an air inlet (5) is provided at one end of the insulated outer shell (1) near the evaporator module (2) and an air outlet (6) is provided at one end near the condenser module (3), and an airflow channel area is formed between the air inlet (5) and the air outlet (6), characterized in that, The insulation shell (1) is equipped with partitions inside, at the air inlet (5) and the air outlet (6). The partitions are separated from the evaporator module (2), the condenser module (3) and the side wall of the insulation shell (1) to form a low-temperature area that is not affected by the airflow channel. The pipes (8) of the evaporator module (2) and the condenser module (3) are arranged in the low-temperature area.

2. The heat pump drying equipment according to claim 1, characterized in that, The partition includes a first transverse partition (11) perpendicular to the airflow direction and a second transverse partition (7) parallel to the airflow direction, which are arranged horizontally below the evaporator module (2) and the condenser module (3); a first vertical partition (9) arranged vertically between the evaporator module (2) and the side wall of the insulation shell (1) parallel to the airflow direction; and a second vertical partition (10) arranged between the condenser module (3) and the side wall of the insulation shell (1) perpendicular to the airflow direction.

3. The heat pump drying equipment according to claim 2, characterized in that, The partition also includes a third vertical partition (12) that is vertically arranged on the evaporator module (2) and the condenser module (3) and parallel to the side wall near the low temperature region.

4. The heat pump drying equipment according to claim 1, characterized in that, The airflow channel area includes a low-temperature section from the air inlet (5) to the condenser module (3) and a high-temperature section from the condenser module (3) to the air outlet (6), with the partition blocking the influence of the airflow in the high-temperature section.

5. The heat pump drying equipment according to claim 4, characterized in that, The airflow channel area occupies 2 / 3 to 9 / 10 of the total volume of the thermal insulation shell (1).

6. The heat pump drying equipment according to claim 1, characterized in that, A filter device (4) is provided at the front end of the evaporator module (2).

7. The heat pump drying equipment according to claim 1, characterized in that, The evaporator module (2) is equipped with a water receiving tray at the bottom.

8. The heat pump drying equipment according to claim 4, characterized in that, The insulation material of the low-temperature area of ​​the insulation shell (1) and the low-temperature section of the airflow channel is resistant to -100℃ to 100℃, and the insulation material of the high-temperature section of the airflow channel is resistant to -100℃ to 200℃.

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