Dryer and heat pump hvac

Abstract

The utility model provides a kind of dryer and heat pump heating and ventilation equipment, dryer is used for heat pump heating and ventilation equipment, including cylinder, first fan and adsorption component, one end of cylinder is used to communicate with outside atmosphere, the other end of cylinder is used to communicate with electric control box inner chamber, first fan is installed in cylinder, first fan is used to air from the one end of cylinder to the other end of cylinder, adsorption component is installed in cylinder, adsorption component is used to adsorb water vapor in air in cylinder.Such, first fan can actively drive air flow, overcome the resistance when air natural flow, greatly speed up the moving speed of air in cylinder.Fast air flow means that more air can pass through adsorption component in unit time, increase the contact opportunity of air and adsorption component, thereby improve the adsorption efficiency of adsorption component to water vapor in air, significantly improve the overall drying efficiency of dryer.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to dryers and heat pump heating and ventilation equipment. Background Technology

[0002] Heat pump HVAC equipment has become an indispensable household appliance. Currently, to cool the electrical control box, heat pump HVAC systems typically introduce outside air through air inlets. However, because outside air contains moisture, molecular sieves are often used to absorb moisture from the air entering the control box, thus drying the air. However, this method of absorbing moisture through molecular sieves results in low air drying efficiency. Utility Model Content

[0003] Embodiments of this utility model provide a dryer and a heat pump HVAC system, which aim to improve the efficiency of air drying.

[0004] In one aspect, embodiments of the present invention provide a dryer.

[0005] In one embodiment, the dryer includes:

[0006] A cylindrical body, one end of which is used to connect with the outside atmosphere, and the other end of which is used to connect with the inner cavity of the electrical control box;

[0007] A first fan is installed on the cylinder, and the first fan is used to draw air from one end of the cylinder to the other end of the cylinder;

[0008] An adsorption component is installed inside the cylinder and is used to adsorb water vapor in the air inside the cylinder.

[0009] In one embodiment, the inner wall of the cylinder is provided with an air guide groove, which is used to guide air from one end of the cylinder to the other end of the cylinder.

[0010] In one embodiment, the air guide groove is arranged in a spiral shape along the axial direction of the cylinder.

[0011] Secondly, this application also provides a heat pump heating and ventilation system, the heat pump heating and ventilation system comprising:

[0012] The enclosure forms a negative pressure chamber and an installation chamber;

[0013] An electrical control box is installed inside the mounting cavity and is connected to the negative pressure cavity; the electrical control box has an air inlet.

[0014] As described above, in the dryer, the other end of the cylinder is connected to the air inlet.

[0015] In one embodiment, the other end of the cylinder is threadedly connected to the electrical control box.

[0016] In one embodiment, a gasket is fitted on the outer side of the other end of the cylinder, the gasket being used to elastically abut against the inner wall of the air inlet.

[0017] In one embodiment, the heat pump HVAC equipment further includes:

[0018] An air inlet heat pipe is provided, one end of which is connected to one end of the cylinder, and the other end of which is used to connect to the external atmosphere.

[0019] A heat exchange section is installed in the housing, and the heat exchange section is adapted to be thermally connected to the air inlet heat pipe.

[0020] In one embodiment, the heat exchange section includes a finned air collecting tube, which is attached to the air inlet heat conduction tube.

[0021] In one embodiment, the housing includes:

[0022] The main body of the box forms a cavity;

[0023] A partition is installed inside the cavity, which divides the cavity into a negative pressure cavity and an installation cavity that are spaced apart horizontally.

[0024] In one embodiment, the sidewall of the electrical control box is connected to the partition;

[0025] The enclosure also includes a sound insulation panel, which is installed inside the mounting cavity. The sound insulation panel, the bottom of the electrical control box, the bottom of the enclosure, and the partition form a compressor compartment.

[0026] The heat pump HVAC equipment also includes a compressor, which is installed in the compressor compartment.

[0027] In one embodiment, the bottom of the electrical control box is provided with a plurality of wire holes, which are spaced apart and all connected to the compressor compartment. The plurality of wire holes are used to allow various wire harnesses to be threaded through.

[0028] In one embodiment, a plurality of sealing joints are also included, and each of the wire-passing holes is equipped with a sealing joint, which is used to seal the gap between the wire harness and the inner wall of the wire-passing hole.

[0029] In one embodiment, the electrical control box includes:

[0030] The box body has an outer wall connected to the partition, and an inner wall having multiple mounting surfaces, wherein adjacent mounting surfaces are arranged at an included angle.

[0031] Multiple circuit boards are mounted on multiple mounting surfaces.

[0032] In one embodiment, a second fan is also included, which is installed in the negative pressure chamber;

[0033] The plurality of mounting surfaces include a first mounting surface that is thermally connected to the partition;

[0034] The plurality of circuit boards include a driver circuit board, which is mounted on the first mounting surface.

[0035] In one embodiment, an air guide structure is further included, which is installed inside the electrical control box and is adapted to guide airflow to at least one of the plurality of circuit boards.

[0036] The beneficial effects of the embodiments of this utility model are as follows:

[0037] In this embodiment of the invention, one end of the cylinder is connected to the outside atmosphere, and the other end is connected to the inner cavity of the electrical control box. This structure provides a clear path for airflow, allowing air to smoothly enter the cylinder from the outside, undergo drying, and then enter the inner cavity of the electrical control box, forming a relatively independent and orderly airflow circulation system. This avoids airflow chaos and stagnation, helping to improve the airflow efficiency within the dryer and thus enhancing drying efficiency. A first fan is installed in the cylinder, its function being to guide air from one end to the other. The first fan actively drives airflow, overcoming the resistance of natural airflow and significantly accelerating the air's movement speed within the cylinder. Rapid airflow means more air passes through the adsorption components per unit time, increasing the contact opportunities between air and the adsorption components, thereby improving the adsorption efficiency of the adsorption components for moisture in the air and significantly enhancing the overall drying efficiency of the dryer. The adsorption components are installed inside the cylinder and are specifically designed to adsorb moisture from the air within the cylinder. They can precisely remove moisture from the air, enabling the dryer to complete the drying task more efficiently, reducing energy waste and improving drying efficiency. In addition, with the first fan rapidly drawing in air, the adsorption components can quickly adsorb water vapor as the air passes through, ensuring that even at high airflow rates, the humidity in the air can be effectively reduced. This ensures the drying effect while increasing the amount of air dried per unit time, thus improving the drying efficiency. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of the dryer provided in an embodiment of this utility model;

[0040] Figure 2 yes Figure 1 The dryer shown is a cross-sectional view.

[0041] Figure 3 This is a structural schematic diagram of a heat pump HVAC equipment (partial structure) provided in an embodiment of this utility model;

[0042] Figure 4 This is one of the structural schematic diagrams of the connection between the electrical control box and the partition provided in the embodiment of this utility model;

[0043] Figure 5 This is a schematic diagram of the electrical control box (partial structure) provided in an embodiment of this utility model.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100. Heat pump HVAC equipment; 10. Dryer; 11. Cylinder; 12. First fan; 13. Adsorption assembly; 131. Supporting part; 132. Adsorption part; 1321. Air passage; 14. Air guide duct; 20. Box; 21. Negative pressure chamber; 22. Mounting chamber; 23. Box body; 24. Partition; 25. Sound insulation board; 26. Compressor compartment; 30. Electrical control box; 301. Air inlet; 31. Wiring hole; 32. Box; 321. Mounting surface; 3211. First mounting surface; 33. Circuit board; 34. First reactor inlet hole; 35. Second reactor inlet hole; 36. Fan inlet hole; 40. Gasket; 50. Air inlet heat pipe; 60. Heat exchange part; 70. Second fan. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0047] Heat pump HVAC equipment has become an indispensable household appliance. Currently, to cool the electrical control box, heat pump HVAC systems typically introduce outside air through air inlets. However, because outside air contains moisture, molecular sieves are often used to absorb moisture from the air entering the control box, thus drying the air. However, this method of absorbing moisture through molecular sieves results in low air drying efficiency.

[0048] In view of this, the present invention proposes a dryer. Figures 1 to 5 This is a structural schematic diagram of an embodiment of the dryer and heat pump HVAC equipment provided by this utility model. The dryer provided by this utility model is applicable to heat pump HVAC equipment. The dryer will be described in detail below with reference to the main accompanying drawings.

[0049] Reference Figure 1 The dryer 10 includes a cylinder 11, a first fan 12, and an adsorption assembly 13. One end of the cylinder 11 is connected to the outside atmosphere, and the other end of the cylinder 11 is connected to the inner cavity of the electrical control box 30. The first fan 12 is installed in the cylinder 11 and is used to draw air from one end of the cylinder 11 to the other end of the cylinder 11. The adsorption assembly 13 is installed inside the cylinder 11 and is used to adsorb water vapor in the air inside the cylinder 11.

[0050] In this embodiment of the invention, one end of the cylinder 11 is connected to the outside atmosphere, and the other end is connected to the inner cavity of the electrical control box 30. This structure provides a clear path for airflow, allowing air to smoothly enter the cylinder 11 from the outside, undergo drying, and then enter the inner cavity of the electrical control box 30, forming a relatively independent and orderly airflow circulation system. This avoids airflow chaos and stagnation, helps improve the airflow efficiency within the dryer 10, and thus improves drying efficiency. The first fan 12 is installed on the cylinder 11, and its function is to guide air from one end of the cylinder 11 to the other. The first fan 12 can actively drive airflow, overcome the resistance of natural airflow, and greatly accelerate the movement speed of air within the cylinder 11. Rapid airflow means that more air can pass through the adsorption component 13 per unit time, increasing the contact opportunity between air and the adsorption component 13, thereby improving the adsorption efficiency of the adsorption component 13 for water vapor in the air and significantly improving the overall drying efficiency of the dryer 10. The adsorption component 13 is installed inside the cylinder 11 and is specifically designed to adsorb moisture from the air inside the cylinder 11. It can precisely remove moisture from the air, allowing the dryer 10 to complete the drying task more efficiently, reducing energy waste and improving drying efficiency. Furthermore, when the first fan 12 rapidly draws in air, the adsorption component 13 can quickly adsorb moisture as the air passes through, ensuring that even at high airflow rates, the humidity in the air is effectively reduced. This ensures the drying effect while increasing the amount of air dried per unit time, thus improving drying efficiency.

[0051] Reference Figure 1 In one embodiment, the inner wall of the cylinder 11 is provided with an air guide groove 14, which guides air from one end of the cylinder 11 to the other end. Without the air guide groove 14, air flowing inside the cylinder 11 would easily form eddies or turbulence at corners and edges of the adsorption component 13, increasing airflow resistance. The design of the air guide groove 14 provides a clear flow channel for the air, guiding it along a predetermined path, preventing disordered diffusion and collisions within the cylinder 11, effectively reducing eddies and turbulence, lowering airflow resistance, and allowing air to pass through the cylinder 11 more smoothly. The design of the air guide groove 14 also makes the air distribution more uniform across the cross-section of the cylinder 11, preventing excessively fast airflow in some areas and excessively slow airflow in others, ensuring smoother overall airflow within the cylinder 11, reducing localized resistance caused by uneven airflow distribution, and further improving airflow efficiency.

[0052] In addition, the first fan 12 provides power for airflow, and the air guide duct 14 guides the airflow, enabling the power generated by the first fan 12 to be more effectively converted into the kinetic energy of the airflow. At the same fan power, the air guide duct 14 allows the air to achieve a higher flow velocity within the cylinder 11, increasing the amount of air passing through the cylinder 11 per unit time, accelerating the contact frequency between the air and the adsorption component 13, thereby improving drying efficiency. Airflow within the cylinder 11 involves pressure loss along the flow path, which is related to friction between the inner wall of the cylinder 11 and the interaction between air molecules. The air guide duct 14 can change the contact mode between the air and the inner wall of the cylinder 11, making the contact more "orderly," reducing frictional resistance, lowering pressure loss along the flow path, making airflow within the cylinder 11 easier, maintaining a higher flow velocity, and improving the drying effect.

[0053] The shape of the air guide trough 14 can be selected as needed. For example, in one embodiment, the air guide trough 14 can be arranged in a straight line parallel to the axis of the cylinder 11. In another embodiment, the air guide trough 14 can also be configured as a wave-shaped air guide trough 14. In yet another embodiment, the cross-sectional shape or size of the air guide trough 14 changes along the axis of the cylinder 11, for example, from one end of the cylinder 11 to the other end, the width of the air guide trough 14 gradually narrows or the height gradually increases. Specifically, in the embodiments of this application, the air guide trough 14 is arranged in a spiral shape along the axis of the cylinder 11. In this way, the air, guided by the spiral air guide trough 14, will form a rotating airflow. This rotating airflow can increase the contact area and contact time between the air and the adsorption component 13, improve the adsorption efficiency of the adsorption component 13 for water vapor, and enable the air to be dried more thoroughly, reducing the humidity of the air entering the inner cavity of the electrical control box 30. Under the action of the spiral air guide groove 14, the air flows evenly inside the cylinder 11, ensuring that all parts of the air entering the cylinder 11 are dried to the same degree. This prevents some parts of the air from being over-dried while others are under-dried, guaranteeing uniform humidity of the air entering the inner cavity of the electrical control box 30, which is beneficial for the stable operation of the electronic components inside the electrical control box 30.

[0054] It should be noted that there are various types of adsorption components 13. For example, in one embodiment, the adsorption component 13 may include a molecular sieve. (Combined with...) Figure 2 In another embodiment, the adsorption assembly 13 further includes a support portion 131 and an adsorption portion 132. The adsorption portion 132 is mounted on the support portion 131 and forms an air passage 1321. When outside air passes through the air passage 1321, the moisture in the air is removed. Specifically, the adsorption portion 132 includes at least one of silica gel, activated carbon, and alumina. Specifically, the type of adsorption assembly 13 can be selected as needed, and this application does not limit this selection.

[0055] Reference Figures 3 to 5Secondly, embodiments of this utility model also provide a heat pump HVAC equipment 100, which includes a housing 20, an electrical control box 30, and a dryer 10 as described above. The housing 20 forms a negative pressure chamber 21 and a mounting chamber 22. The electrical control box 30 is installed in the mounting chamber 22 and communicates with the negative pressure chamber 21. The electrical control box 30 has an air inlet 301, and the other end of the housing 11 is connected to the air inlet 301. Thus, the dryer 10 is directly connected to the air inlet 301 of the electrical control box 30, continuously supplying dried, low-humidity air into the electrical control box 30. During the operation of the heat pump HVAC equipment 100, ambient air may contain a certain amount of moisture. If this moisture directly enters the electrical control box 30, it is easily condensed into water droplets in the low-temperature area after the internal electronic components heat up, leading to problems such as short circuits and corrosion. The input of dry air can effectively reduce the humidity inside the electrical control box 30, prevent condensation, protect the electronic components from moisture corrosion, and extend the service life of the equipment.

[0056] The presence of the negative pressure chamber 21 creates an airflow circulation system between the electrical control box 30 and the interior of the housing 20. After the dryer 10 introduces air into the electrical control box 30, the air absorbs the heat generated by the electronic components, then enters the negative pressure chamber 21, and is subsequently discharged outside the equipment through the relevant channels of the heat pump system. This forced airflow circulation method can quickly remove heat from the electrical control box 30, improving heat dissipation efficiency and ensuring that the electronic components operate at a suitable temperature, preventing performance degradation or damage due to overheating. The combination of the negative pressure chamber 21, the electrical control box 30, and the dryer 10 ensures that the air delivered by the dryer 10 is evenly distributed within the electrical control box 30, allowing each electronic component to receive good heat dissipation. Compared to natural heat dissipation, this uniform airflow circulation avoids localized overheating, improves the overall heat dissipation effect of the electrical control box 30, and enhances the operational stability of the heat pump HVAC equipment 100. In addition, the electrical control box 30 is installed in the mounting cavity 22 to avoid occupying the space of the negative pressure cavity 21, ensuring that the air volume through the negative pressure cavity 21 is sufficient, so that the heat pump HVAC equipment 100 can work normally and ensure heat exchange efficiency.

[0057] Reference Figure 1 , Figure 2 as well as Figure 4 In one embodiment, the other end of the cylinder 11 is threadedly connected to the electrical control box 30. This prevents refrigerant from entering the electrical control box. Furthermore, the threaded connection achieves a tight connection between the cylinder 11 and the electrical control box 30 through the mechanical engagement of the threads. The friction formed on the contact surfaces effectively resists external forces such as vibration and pressure fluctuations during equipment operation, preventing loosening or detachment and ensuring a stable connection between the cylinder 11 and the electrical control box 30. Additionally, the threaded connection requires no complex tools or specialized skills; operators can complete installation and disassembly using only simple tools such as wrenches, significantly reducing the assembly and maintenance time of the dryer 10 and the electrical control box 30.

[0058] Reference Figure 1 In one embodiment, a gasket 40 is fitted onto the outer side of the other end of the cylinder 11. The gasket 40 is used to elastically abut against the inner wall of the air inlet 301. Thus, the gasket 40, utilizing its elastic properties, can tightly fill the tiny gap between the cylinder 11 and the air inlet 301, preventing undried air or other liquids from entering the electrical control box 30 through this gap, maintaining a dry environment inside the electrical control box 30. Furthermore, the gasket 40 acts as a physical barrier, effectively blocking dust, impurities, and other particulate matter from entering the electrical control box 30. In the operating environment of the heat pump HVAC equipment 100, the air contains various dust and impurities. If these impurities enter the electrical control box 30, they may adhere to the surface of electronic components, affecting heat dissipation and electrical performance, and even causing short circuits. The elastic abutment of the gasket 40 forms a tight seal, preventing impurities from entering the electrical control box 30 through the connection between the cylinder 11 and the air inlet 301, protecting the normal operation of the electronic components.

[0059] It should be noted that the number of gaskets 40 can be set as needed. For example, in one embodiment, one gasket 40 can be provided. In other embodiments, two, three, or more gaskets 40 can be provided. When two gaskets 40 are provided, the sealing performance at the connection between the cylinder 11 and the air inlet 301 is improved while saving costs.

[0060] Reference Figure 2 and Figure 4 In one embodiment, the heat pump HVAC equipment 100 further includes an air inlet heat pipe 50 and a heat exchange section 60. One end of the air inlet heat pipe 50 is connected to one end of the cylinder 11, and the other end of the air inlet heat pipe 50 is used to connect to the external atmosphere. The heat exchange section 60 is installed in the housing 20 and is adapted to be thermally connected to the air inlet heat pipe 50. Thus, when outside air enters the equipment through the air inlet heat pipe 50, the heat exchange section 60 can preheat or precool the air. For example, in a cold environment, the heat exchange section 60 uses the waste heat inside the equipment to preheat the incoming cold air, reducing the heating load of the subsequent heat pump system on the air, making the air closer to the operating temperature range of the heat pump evaporator or condenser, thereby accelerating the heat exchange rate and improving the heating efficiency of the heat pump; in a hot environment, the heat exchange section 60 can precool the incoming hot air through a refrigeration cycle, reducing the cooling energy consumption of the heat pump and improving the cooling efficiency.

[0061] In one embodiment, the heat exchange section 60 includes a finned air collector tube that is attached to the inlet heat pipe 50. This attachment design creates a tight heat conduction path between the inlet heat pipe 50 and the finned air collector tube, significantly reducing the delay in heat transfer and allowing for rapid heat exchange between them, thus improving heat exchange efficiency. Furthermore, the attachment design between the finned air collector tube and the inlet heat pipe 50 reduces the number of connecting pipes and installation gaps between them, resulting in a more compact internal layout of the heat pump HVAC equipment 100, thereby reducing the floor space and installation space requirements of the heat pump HVAC equipment 100.

[0062] Reference Figure 2 In one embodiment, the housing 20 includes a main body 23 and a partition 24. The main body 23 forms a cavity, and the partition 24 is installed within the cavity, dividing the cavity into a negative pressure cavity 21 and an installation cavity 22 arranged horizontally at intervals. Thus, the partition 24 horizontally divides the cavity into two functionally independent areas, avoiding mutual interference between different functional modules. The horizontal separation design allows the negative pressure cavity 21 and the installation cavity 22 to be arranged side-by-side horizontally within the main body 23, fully utilizing the space resources of the housing 20 and reducing the equipment's footprint. As a supporting structure within the cavity of the main body 23, the partition 24 increases the overall rigidity and strength of the housing 20. During the operation of the heat pump HVAC equipment 100, vibrations and impacts generated by components such as the compressor and fan can be effectively transmitted and dispersed through the partition 24, reducing the risk of deformation and damage to the housing 20.

[0063] Reference Figure 2 and Figure 3 In one embodiment, the sidewall of the electrical control box 30 is connected to the partition 24. The housing 20 also includes a sound insulation panel 25, which is installed in the mounting cavity 22. The sound insulation panel 25, the bottom of the electrical control box 30, the bottom of the housing 20, and the partition 24 together form a compressor compartment 26. The heat pump HVAC equipment 100 also includes a compressor, which is installed in the compressor compartment 26. Thus, since the formed compressor compartment 26 is a closed acoustic cavity, the noise emitted by the compressor during operation can be reduced. In addition, the design of the sound insulation panel 25, the bottom of the electrical control box 30, the bottom of the housing 20, and the partition 24 forming the compressor compartment 26 can enhance the structural strength of the heat pump HVAC equipment 100 to a certain extent.

[0064] It should be noted that the sound insulation panel 25 installed in the mounting cavity 22 is usually made of high-density sound-absorbing material (such as polyester fiber cotton, mineral wool board) or composite damping structure, which reduces the propagation efficiency of high-frequency operating noise of the compressor (such as above 3000Hz) by reflecting, absorbing and dissipating sound wave energy.

[0065] Reference Figure 4In one embodiment, the bottom of the electrical control box 30 is provided with multiple wiring holes 31. These holes are spaced apart and all communicate with the compressor compartment 26. The multiple wiring holes 31 are used to accommodate different types of wire harnesses. Thus, the multiple wiring holes 31 achieve classified management of the wire harnesses through physical separation, avoiding cross-entanglement of wire harnesses between the electrical control box 30 and the compressor compartment 26, and reducing the risk of electromagnetic interference. The spaced design of the wiring holes 31 prevents excessive concentration of wire harnesses within the compressor compartment 26, reducing the risk of insulation aging due to heat accumulation.

[0066] It should be noted that the multiple first wire holes at the bottom of the electrical control box 30 are used to directly pass through the low-voltage wires on the system side, so that too many wires are not visible from the outside, thus improving the aesthetics of the heat pump HVAC equipment 100.

[0067] The specific arrangement of the multiple wiring holes 31 can be selected as needed. For example, in the embodiments of this application, the multiple wiring holes 31 include low-voltage inlet holes, coil inlet holes, and compressor inlet holes. The low-voltage inlet holes are mainly used to connect and introduce low-voltage, low-current signal lines or control lines. The coil inlet holes mainly provide a power input path for devices or components that require higher voltage or larger current, such as motors, transformers, or other types of induction coils. The compressor inlet holes provide an installation path for the power cord connected to the compressor.

[0068] In some embodiments, the heat pump HVAC system 100 further includes a plurality of sealing joints, each of which is installed in a wiring hole 31. These sealing joints seal the gap between the wiring harness and the inner wall of the wiring hole 31. This prevents refrigerant gas (flammable and explosive) from entering the electrical control box 30 from the compressor compartment 26, reducing the risk of explosion or fire due to refrigerant leakage. Furthermore, the sealing joints prevent refrigerant from entering the electrical control box 30 not only for fire and explosion prevention but also help protect sensitive electronic components from chemical corrosion or other forms of damage. The sealing joints effectively isolate the compressor compartment 26 from the electrical control box 30, reducing maintenance needs and downtime caused by refrigerant leakage and improving the overall operational stability and reliability of the heat pump HVAC system.

[0069] Reference Figure 5 The side of the electrical control box 30 is also provided with a first reactor inlet hole 34, a second reactor inlet hole 35 and a fan inlet hole 36. The first reactor inlet hole 34, the second reactor inlet hole 35 and the fan inlet hole 36 are arranged at intervals, so that the wiring layout is reasonable and interference between wire harnesses is avoided.

[0070] Reference Figure 3 and Figure 4In one embodiment, the electrical control box 30 includes a box body 32 and multiple circuit boards 33. The outer wall of the box body 32 is connected to a partition 24, and the inner wall of the box body 32 has multiple mounting surfaces 321. Adjacent mounting surfaces 321 are arranged at an angle, and the multiple circuit boards 33 are respectively mounted on the multiple mounting surfaces 321. Thus, the inner wall of the box body 32 achieves three-dimensional mounting of the multiple circuit boards 33 through the multiple angled mounting surfaces 321, breaking through the spatial limitations of traditional planar layouts and effectively utilizing the space within the heat pump HVAC equipment 100. Furthermore, the three-dimensional mounting of the multiple circuit boards 33 can reduce the risk of electromagnetic interference between them. The three-dimensional mounting of the multiple circuit boards 33 can also avoid heat concentration and improve the service life of the electrical control box 30.

[0071] It should be noted that the multiple circuit boards 33 include control circuit boards 33, drive circuit boards 33, filters, and terminal blocks, etc. Specifically, the specific types of the multiple circuit boards 33 can be selected as needed, and this application does not limit this.

[0072] In one embodiment, the number of boxes 32 can be selected as needed. For example, in one embodiment, one box 32 can be provided, and the bottom of the box 32 serves as the top of the compressor compartment 26. In another embodiment, two boxes 32 are provided, spaced apart. This ensures that the negative pressure compartment is not encroached upon by other components. Specifically, this application does not limit the number of boxes 32.

[0073] Reference Figure 3 In one embodiment, the heat pump HVAC equipment 100 further includes a second fan 70, which is installed in the negative pressure chamber 21. Multiple mounting surfaces 321 include a first mounting surface 3211 thermally connected to the partition 24. Multiple circuit boards 33 include a drive circuit board 33, which is mounted on the first mounting surface 3211. Thus, the second fan 70 forms a directional airflow within the negative pressure chamber 21, enhancing heat exchange between the surface of the housing 32 and the outside air through the negative pressure suction effect. The first mounting surface 3211 is thermally connected to the partition 24, allowing the heat generated by the drive circuit board 33 to be conducted to the partition 24 through the shortest path, shortening the heat conduction path and enabling rapid transfer of heat from the drive circuit board 33 to the partition 24, thereby cooling the drive circuit board 33.

[0074] In addition, the second fan 70 forms a directional high-speed airflow in the negative pressure chamber 21. The high-speed airflow exchanges heat with the partition 24, reducing the temperature of the partition 24. The cooled partition 24 can better absorb the heat of the drive circuit board 33, thereby cooling the drive circuit board 33.

[0075] It should be noted that the specific shape of the partition 24 can be selected as needed, and this application does not limit it.

[0076] In one embodiment, the heat pump HVAC equipment 100 further includes an air guide structure installed inside the electrical control box 30. The air guide structure is adapted to guide airflow to at least one of the multiple circuit boards 33. Thus, the air guide structure can precisely direct the dried airflow to the high-heat circuit board 33 as needed, thereby achieving rapid temperature reduction of the high-heat circuit board 33 and ensuring that the circuit board 33 can operate normally.

[0077] It should be noted that there are various types of air guiding structures. For example, in one embodiment, the air guiding structure may include air guiding channels corresponding to multiple circuit boards 33, each air guiding channel being equipped with a valve body. By controlling the opening and closing of the valve body, the corresponding circuit board 33 can be cooled. In another embodiment, the air guiding structure includes adjustable blades, and by adjusting the deflection angle of the blades, airflow is guided to the corresponding circuit board 33. Specifically, the specific configuration of the air guiding structure can be set as needed, and this application does not limit it in this regard.

[0078] In addition, when the heat pump HVAC system 100 is cooling, it has an internal subcooled section piping that can automatically close. When the heat pump HVAC system 100 is in cooling mode, the control system automatically closes specific piping sections as needed; these sections are called subcooled sections. This is usually achieved through solenoid valves or other types of valves that can automatically open or close according to preset conditions (such as pressure, temperature, etc.). By closing the subcooled section, some of the refrigerant undergoes an additional cooling process, ensuring it reaches a lower temperature before entering the evaporator. Thus, with the same refrigerant flow rate, more heat can be removed, thereby increasing the cooling capacity. Because the subcooled section allows the refrigerant to be better cooled before entering the evaporator, the latent heat of the refrigerant can be utilized more effectively, directly leading to higher energy conversion efficiency, i.e., improving the energy efficiency ratio of the heat pump HVAC system 100. When the subcooled refrigerant enters the evaporator, its lower temperature allows for more effective reduction of air temperature and increase of relative humidity, thus contributing to improved dehumidification.

[0079] In one embodiment, a cooling branch pipe is installed on the heat pump HVAC equipment 100, and this pipe is attached to the drive circuit board 33 to transfer cooling. This method uses a liquid cooling solution, which has relatively efficient heat dissipation performance.

[0080] The working principle of the heat pump heating equipment of this application is described below:

[0081] The cold air passes through the negative pressure of the negative pressure chamber 21 and the suction effect of the first fan 12, so that the cooled humid air can pass through the air vents and the adsorption part absorbs the water vapor in the air. Under the action of the air guide duct 14, the air speed is accelerated and enters the electrical control box 30. The gasket 40 and the inner wall of the air inlet 301 elastically abut against each other to ensure that the refrigerant in the compressor compartment cannot enter the electrical control box 30. Since the electrical control box 30 is connected to the negative pressure chamber 21, the negative pressure in the negative pressure chamber 21 starts to draw air into the electrical control box 30. The air inlet 301 is connected to the air inlet heat conduction pipe 50, which is in communication with the outside air. The air inlet heat conduction pipe 50 is attached to the finned air collection pipe. The outside air enters the air inlet heat conduction pipe 50 and heat transfer occurs, which lowers the temperature of the cold air. The outside air containing humidity enters the electrical control box 30 after passing through the dryer 10, and cools down the multiple circuit boards 33. Since the air inlet heat pipe 50 is directly connected to the outside air of the machine, there is no risk of R290 in the air entering the electrical control box 30, thus meeting the explosion-proof requirements.

[0082] It should be noted that R290 is propane, which is an environmentally friendly refrigerant, but it is flammable and explosive.

[0083] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A dryer for use in heat pump HVAC equipment, characterized in that, The dryer includes: A cylindrical body, one end of which is used to connect with the outside atmosphere, and the other end of which is used to connect with the inner cavity of the electrical control box; A first fan is installed on the cylinder, and the first fan is used to draw air from one end of the cylinder to the other end of the cylinder; An adsorption component is installed inside the cylinder and is used to adsorb water vapor in the air inside the cylinder.

2. The dryer according to claim 1, characterized in that, The inner wall of the cylinder is provided with an air guide groove, which is used to guide air from one end of the cylinder to the other end of the cylinder.

3. The dryer according to claim 2, characterized in that, The air guide groove is spirally arranged along the axial direction of the cylinder.

4. A heat pump HVAC system, characterized in that, include: The enclosure forms a negative pressure chamber and an installation chamber; An electrical control box is installed inside the mounting cavity and is connected to the negative pressure cavity; the electrical control box has an air inlet. The dryer as described in any one of claims 1 to 3, wherein the other end of the cylinder is connected to the air inlet.

5. The heat pump HVAC equipment according to claim 4, characterized in that, The heat pump HVAC equipment also includes: An air inlet heat pipe is provided, one end of which is connected to one end of the cylinder, and the other end of which is used to connect to the external atmosphere. A heat exchange section is installed in the housing, and the heat exchange section is adapted to be thermally connected to the air inlet heat pipe.

6. The heat pump HVAC equipment according to claim 5, characterized in that, The heat exchange section includes a finned air collecting tube, which is attached to the air inlet heat conduction tube.

7. The heat pump HVAC equipment according to claim 4, characterized in that, The enclosure includes: The main body of the box forms a cavity; A partition is installed inside the cavity, which divides the cavity into a negative pressure cavity and an installation cavity that are spaced apart horizontally.

8. The heat pump HVAC equipment according to claim 7, characterized in that, The side wall of the electrical control box is connected to the partition. The enclosure also includes a sound insulation panel, which is installed inside the mounting cavity. The sound insulation panel, the bottom of the electrical control box, the bottom of the enclosure, and the partition form a compressor compartment. The heat pump HVAC equipment also includes a compressor, which is installed in the compressor compartment.

9. The heat pump HVAC equipment according to claim 8, characterized in that, The bottom of the electrical control box is provided with multiple wiring holes, which are spaced apart and all connected to the compressor compartment. The multiple wiring holes are used to allow various wire harnesses to be threaded through.

10. The heat pump HVAC equipment according to claim 9, characterized in that, It also includes multiple sealing joints, each of which is installed in the threading hole. The sealing joints are used to seal the gap between the wire harness and the inner wall of the threading hole.

11. The heat pump HVAC equipment according to claim 7, characterized in that, The electrical control box includes: The box body has an outer wall connected to the partition, and an inner wall having multiple mounting surfaces, wherein adjacent mounting surfaces are arranged at an included angle. Multiple circuit boards are mounted on multiple mounting surfaces.

12. The heat pump HVAC equipment according to claim 11, characterized in that, It also includes a second fan, which is installed in the negative pressure chamber; The plurality of mounting surfaces include a first mounting surface that is thermally connected to the partition; The plurality of circuit boards include a driver circuit board, which is mounted on the first mounting surface.

13. The heat pump HVAC equipment according to claim 11, characterized in that, It also includes an air guide structure installed inside the electrical control box, the air guide structure being adapted to guide airflow to at least one of the plurality of circuit boards.

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