Integrated built-in variable frequency air source heat pump cold and hot air blower

Abstract

The application relates to the technical field of heat exchange, in particular to a cold and hot air blower with an integrated built-in variable-frequency air source heat pump, which comprises a shell, a first heat exchange mechanism, a second heat exchange mechanism and a heat circulation mechanism, the shell is provided with a first chamber and a second chamber for accommodating the first and second heat exchange mechanisms respectively, the two are connected with the heat circulation mechanism to realize cold and hot exchange, and the first heat exchange mechanism is arranged on the upper layer. The first chamber is provided with a cavity opening, the second chamber is provided with a return air cavity opening and an outlet air cavity opening, the shell is provided with a load-bearing part, one side of the first chamber is provided with a power mechanism. The cold and hot air blower is also provided with a flow guide part with an angle adjusting function, a liquid collecting part, a guide part and a protection part and the like. The application discards the cold medium field connection process of the split structure, does not need professional qualification personnel to operate, simplifies the installation process, reduces the qualification requirement, realizes quick disassembly and migration, adapts to the demand of temporary places, improves the heating capacity and low-temperature heating capacity, meets the temperature control demand of large temporary places, environmental protection standards and the like, and avoids the safety hidden danger of ground icing.

Description

Technical Field

[0001] This application relates to the field of heat exchange technology, and in particular to a hot and cold air blower with an integrated built-in variable frequency air source heat pump. Background Technology

[0002] Currently, air source heat pump air coolers are widely used in home heating and temporary venue temperature control due to their energy-saving and environmentally friendly advantages. Among them, variable frequency products are experiencing continuous market demand growth due to their high energy efficiency and precise temperature control. Domestic conventional variable frequency air source heat pump air coolers mostly adopt a split-type structure, with core specifications concentrated at 1.5 HP (3000W), 2 HP (4000W), and 3 HP (6000W), primarily suitable for heating and cooling needs in small spaces such as family rooms. With the upgrading of temperature control requirements in temporary venues such as construction sites and exhibitions, as well as the stringent environmental and convenience requirements in overseas markets such as Europe, the adaptability of existing split-type products is gradually becoming insufficient. The industry urgently needs a heat pump air cooler / heater product that meets one or more of the requirements of large temporary venues, environmental protection, and convenience.

[0003] To address the application needs of air source heat pump air coolers, existing technologies primarily improve energy efficiency and temperature control accuracy by optimizing the efficiency of heat exchangers in the split-type structure and upgrading the variable frequency control system. Some products attempt to improve the outdoor unit's drainage structure, using a simple drip tray to collect condensate, or replacing the refrigerant with a low GWP value to meet environmental protection requirements. For temporary installations, existing technologies mainly rely on strengthening the installation and fixing structure and simplifying pipe connections to reduce disassembly and assembly difficulty. However, this still does not escape the inherent limitations of the split-type structure, requiring complex procedures such as on-site refrigerant connection and alignment of indoor and outdoor units.

[0004] Existing split-type variable frequency air source heat pump air heaters have several technical drawbacks: First, the split structure requires fixed installation, and the on-site refrigerant connection and piping layout are complex procedures. This not only makes disassembly and assembly inconvenient but also severely limits their adaptability to temporary relocation needs. Furthermore, high labor costs in developed countries like Western Europe, coupled with the need for specialized qualifications for refrigerant installation, further increase disassembly and assembly costs, restricting the product's expansion into overseas markets. Second, the heating capacity is limited to within 6kW, only sufficient for small-area household use, and cannot meet the temperature control requirements of large-scale construction sites, exhibitions, and other large-area temporary venues. The heating capacity decreases significantly under low-temperature conditions; thirdly, the outdoor unit's drainage structure is poorly designed, resulting in low drainage efficiency and indiscriminate discharge of condensate and defrost water, which can easily lead to ground icing in low-temperature environments, posing a serious safety hazard; fourthly, the mainstream R410A refrigerant has a Global Warming Potential (GWP) as high as 2088, failing to meet the stringent environmental standards of Europe, thus lacking environmental friendliness; fifthly, the existing structure lacks efficient airflow design, resulting in uneven distribution of return and outlet air, affecting heat exchange efficiency, and some components are cumbersome to disassemble and assemble, making on-site maintenance and cleaning inconvenient. These defects make it difficult for existing products to meet one or more of the requirements for convenience, large capacity, environmental friendliness, and safety. Summary of the Invention

[0005] To address the issues of cumbersome disassembly and assembly, reliance on highly qualified personnel, poor adaptability to temporary locations, and high labor and disassembly costs in Western Europe associated with existing split-type heat pump air blowers, this application provides an integrated built-in variable frequency air source heat pump for both hot and cold air blowers.

[0006] This application provides an integrated hot and cold air blower with a built-in variable frequency air source heat pump, which adopts the following technical solution: An integrated air-cooled / heat-discharge fan with a built-in variable frequency air source heat pump includes a casing, a first heat exchange mechanism, a second heat exchange mechanism, and a heat circulation mechanism. The casing has at least a first chamber and a second chamber for housing the first and second heat exchange mechanisms and enclosing them to prevent air leakage. The first heat exchange mechanism is installed in the first chamber for heat exchange with the outdoor environment. The second heat exchange mechanism is installed in the second chamber for supplying hot or cold air to the indoor space to achieve heating or cooling functions. The first and second heat exchange mechanisms are respectively connected to the heat circulation mechanism. The circulation mechanism is responsible for the absorption, compression, transfer, and release of heat, realizing heat exchange; the first heat exchange mechanism is located above the second heat exchange mechanism; the first chamber has a first cavity opening and a second cavity opening, which are respectively connected to the first chamber; the second chamber has a return air cavity opening and an air outlet opening, which are respectively connected to the second chamber; the housing is provided with a load-bearing component, which is integrally formed with the housing, and is used to support the weight of the entire equipment and provide a forklift operating passage; a power supply mechanism is installed on one side of the first chamber, which can realize quick power connection and emergency power cut-off functions.

[0007] By adopting the above technical solutions, an integrated duct air supply structure combining indoor and outdoor fans has been achieved; the on-site refrigerant connection process of the split structure has been eliminated, eliminating the need for professionally qualified personnel to operate, greatly simplifying the installation process and reducing qualification requirements; the integrated design, combined with forklift access, allows for quick disassembly and relocation, making it suitable for temporary locations such as construction sites and exhibitions; it significantly reduces the high labor and disassembly costs in Western Europe, improving the product's regional applicability; and the power supply mechanism allows for quick power connection and emergency power outage.

[0008] Preferably, the first cavity is equipped with a first guide member with an angle adjustment function, which can change the direction of the airflow entering the first heat exchange mechanism, and is used to guide the airflow and protect the first heat exchange mechanism; the second cavity is equipped with a second guide member with an angle adjustment function, which can change the direction of the airflow flowing out of the first heat exchange mechanism, and is used to guide the airflow and protect the first heat exchange mechanism.

[0009] By adopting the above technical solution, the casing is equipped with a first chamber and a second chamber to enclose the first and second heat exchange mechanisms to prevent air leakage. The first heat exchange mechanism exchanges heat with the outside in the upper layer, while the second heat exchange mechanism supplies hot and cold air to the room in the lower layer. The heat circulation mechanism realizes heat exchange, the load-bearing component supports the weight of the equipment and provides forklift access, and the power supply mechanism can quickly connect to the power supply and cut off power in an emergency. At the same time, the first guide component at the first cavity opening and the second guide component at the second cavity opening have angle adjustment functions, which can realize dynamic airflow control, solve the problems of uneven airflow, poor adaptability to working conditions, and weak environmental adaptability in the existing technology, enhance the environmental adaptability of indoor and outdoor fans in complex temporary places, reduce the reduction of heat exchange efficiency caused by complex airflow around the site, and also help solve the problems of "environmental protection and lifespan", reduce the corrosion of heat exchangers by rainwater and dust, reduce the maintenance frequency of the equipment, and optimize airflow to reduce energy consumption.

[0010] Preferably, the first and second flow guides are quickly connected to the housing via quick-locking components.

[0011] By adopting the above technical solution, the casing is equipped with a first chamber and a second chamber that enclose the first and second heat exchange mechanisms. The first heat exchange mechanism exchanges heat with the outside in the upper layer, while the second heat exchange mechanism generates heat or cools in the lower layer. The heat circulation mechanism realizes heat exchange. The casing's load-bearing components support the weight of the equipment and provide forklift access. The power supply mechanism allows for quick power connection and emergency power cut-off. Furthermore, the first and second flow guides are quickly connected to the casing via quick-lock components, facilitating rapid disassembly and cleaning of the first and second flow guides and the first heat exchange mechanism, ensuring stable heat exchange efficiency. Combined with environmentally friendly refrigerant and frequency conversion technology, heat exchange efficiency and energy efficiency are improved, balancing heating capacity and energy saving, enabling a maximum heating capacity of 50kW to meet the heating and cooling needs of large temporary sites. The first and second flow guides are made of special materials, which not only have excellent flow guiding performance but also possess corrosion resistance and easy cleaning characteristics, further extending the service life of the equipment and reducing maintenance costs.

[0012] Preferably, the first heat exchange mechanism includes a first heat exchange component and an airflow drive component. The first heat exchange component is assembled in the first chamber and installed near the first chamber opening. The first heat exchange component is used to exchange heat with the outdoor environment. The first heat exchange component is connected to a heat circulation mechanism. The airflow drive component is assembled in the first chamber and installed near the second chamber opening. The airflow drive component is used to generate air curtain airflow and drive outdoor air to flow through the first heat exchange component to enhance heat exchange.

[0013] By adopting the above technical solution, the integrated built-in variable frequency air source heat pump hot and cold air fan can accommodate the first heat exchange mechanism and the second heat exchange mechanism and prevent air leakage, bear the weight of the overall equipment and provide a forklift operation channel, and realize the functions of quick power connection and emergency power failure; the first and second chamber openings are equipped with first and second guide components with angle adjustment function to guide the airflow and protect the first heat exchange mechanism; the first heat exchange component exchanges heat with the outdoor environment, and the airflow drive component generates air curtain airflow and drives outdoor air to flow through the first heat exchange component to enhance heat exchange and improve the efficiency of heat exchange.

[0014] Preferably, the airflow drive component includes a flow-dividing base, a first flow-dividing section, and a second flow-dividing section. The flow-dividing base is assembled in the first chamber, and the first and second flow-dividing sections are synchronously rotated and installed on the flow-dividing base. The first flow-dividing section is used to realize the air curtain airflow, and the second flow-dividing section is used to generate the main heat exchange airflow of the first heat exchange component.

[0015] By adopting the above technical solutions, the integrated built-in variable frequency air source heat pump can solve the problems of cumbersome disassembly and assembly, reliance on professional personnel, and inconvenience in relocation of split-type air conditioners. It can significantly reduce labor and disassembly and assembly costs in Western Europe, adapt to the needs of temporary sites, improve heating capacity and adaptability to low-temperature conditions, meet the temperature control requirements of large temporary sites, meet European environmental standards and avoid the safety hazards of ground icing, optimize airflow distribution, improve heat exchange efficiency, and facilitate maintenance and cleaning. The airflow drive component includes a flow-dividing base, a first flow-dividing section, and a second flow-dividing section. The first and second flow-dividing sections are synchronously rotated and installed on the flow-dividing base. This structure enables the first flow-dividing section to achieve air curtain airflow, while the second flow-dividing section generates the main heat exchange airflow for the first heat exchange component. Under cooling conditions, this reduces the interference of external heat flow on the outdoor heat exchanger, increasing the heat exchange efficiency of the evaporator by 8% to 12% and improving the cooling energy efficiency ratio (EER) of the heat cycle mechanism by 5% to 8%. Under heating conditions, this reduces the impact of external cold flow, reducing the amount of frost on the heat exchanger by 15% to 20% and improving the heating energy efficiency ratio (COP) of the heat cycle mechanism by 6% to 10%, while also reducing energy loss during the defrosting process.

[0016] Preferably, the first chamber is equipped with a liquid collecting device, which is used to collect the liquid generated during cleaning of the first heat exchange mechanism and the liquid melted during defrosting; one end of the liquid collecting device is equipped with a liquid draining device, which is arranged downward along the height of the casing and extends out of the casing, and is used to guide the liquid out of the fan.

[0017] By adopting the above technical solution, the casing of the hot and cold air blower is equipped with a first chamber and a second chamber that enclose the first and second heat exchange mechanisms. The first chamber, located on the upper layer, is used for heat exchange with the outside, while the second chamber, located on the lower layer, is used to deliver hot or cold air to the interior. Heat exchange is achieved through a heat circulation mechanism. The load-bearing components on the casing support the weight of the equipment and provide a forklift operating passage. The power supply mechanism on one side of the first chamber allows for quick power connection and emergency power cut-off, solving the problems of cumbersome disassembly and assembly, reliance on qualified personnel, and inconvenience in relocation associated with split-type systems. This reduces labor and disassembly / assembly costs in Western Europe and is suitable for temporary site requirements. Furthermore, the first chamber is equipped with a liquid collection and drainage system, allowing defrosting water and condensate from the outdoor heat exchanger to be discharged in an orderly manner. This eliminates the safety hazard of ground icing, improves drainage efficiency and standardization, optimizes the overall structural layout of the equipment, and reduces space occupation.

[0018] Preferably, a melting element is fitted on the outer bottom of the liquid collecting component, the melting element being used to prevent the liquid from freezing again.

[0019] By adopting the above technical solution, the casing is provided with a first chamber and a second chamber to accommodate the first heat exchange mechanism and the second heat exchange mechanism and prevent air leakage. The first heat exchange mechanism exchanges heat with the outside in the upper layer, and the second heat exchange mechanism realizes heating or cooling in the lower layer. The heat circulation mechanism realizes heat exchange. The casing load-bearing component supports the weight of the equipment and provides a forklift passage. The power supply mechanism can quickly connect to the power supply and cut off the power in an emergency. The first chamber is equipped with a liquid collection component to collect the liquid generated during cleaning the first heat exchange mechanism and the liquid melted during the defrosting process. The liquid drain component guides the liquid out of the fan. The bottom of the liquid collection component is equipped with a melting component to prevent the liquid from freezing again. This avoids the safety hazard of the ground freezing caused by the random discharge of defrosting water and condensate, improves drainage efficiency and standardization, and can also intelligently adjust the working mode according to the actual ambient temperature, effectively reducing energy consumption while ensuring that freezing is prevented.

[0020] Preferably, the second heat exchange mechanism includes a second heat exchange component and a flow-converting drive component, which are respectively and spaced apart in the second chamber. The second heat exchange component is installed near the return air inlet, and the heat exchange drive component is installed near the air outlet inlet. The return air inlet and the air outlet inlet are respectively connected to the second chamber. The second heat exchange component is connected to the heat circulation mechanism and is used to supply hot or cold air to the indoor space to achieve heating or cooling functions. The flow-converting drive component is used to drive indoor air to flow through the second heat exchange component, and after heat exchange, it is transported back to the room through the air outlet inlet.

[0021] By adopting the above technical solution, the casing is equipped with a first chamber and a second chamber to enclose the first and second heat exchange mechanisms and prevent air leakage. Simultaneously, the first heat exchange mechanism exchanges heat with the outside in the upper layer, while the second heat exchange mechanism operates in the lower layer, achieving functional zoning of indoor and outdoor heat exchange. In addition, the casing's load-bearing components support the weight of the equipment and provide forklift operation access, while the power supply mechanism allows for quick power connection and emergency power-off functions, ensuring overall equipment stability, convenient transportation, and electrical safety. Furthermore, the second heat exchange component of the second heat exchange mechanism, located near the return air inlet, can exchange heat with the incoming indoor air, while the commutation drive component, located near the outlet air inlet, can promptly transport the air that has completed heat exchange back into the room, realizing the heating or cooling function of supplying hot or cold air to the indoor space and ensuring effective regulation of the indoor ambient temperature.

[0022] Preferably, the return air cavity has at least two sets for connecting indoor return air and fresh air supply, so as to improve heat exchange efficiency, reduce airflow pulsation and introduce fresh outdoor air; the air outlet cavity has at least one set.

[0023] By adopting the above technical solutions, the hot and cold air blower can connect to indoor return air and fresh air supply through two or more sets of return air vents, thereby enhancing heat exchange efficiency, reducing airflow pulsation, and introducing fresh outdoor air. Combined with the integrated design of the casing, load-bearing components, power supply mechanism, etc., it can realize the function of heat exchange, meet the needs of temporary places, and solve the problem of insufficient adaptability of existing split products.

[0024] Preferably, the second chamber is equipped with a guide, which is installed on the return air inlet to guide the return air and fresh air supply to be evenly distributed across the entire second heat exchanger; the guide is quickly connected to the housing via a quick-release component.

[0025] By adopting the above technical solution, the casing is provided with a first chamber and a second chamber to enclose the first and second heat exchange mechanisms. The first heat exchange mechanism exchanges heat with the outside in the upper layer, and the second heat exchange mechanism realizes indoor heating or cooling in the lower layer. The heat circulation mechanism is responsible for heat exchange. The load-bearing components on the casing support the weight of the equipment and provide forklift access. The power supply mechanism on one side of the first chamber can quickly connect to the power supply and cut off the power in an emergency. On this basis, the guide component assembled in the second chamber is installed at the return air cavity, which can guide the indoor return air and fresh air supply to be evenly distributed on the second heat exchange component, thereby improving the heat exchange efficiency. Moreover, the guide component is quickly connected to the casing through quick-release parts, which facilitates the cleaning and maintenance of related components.

[0026] Preferably, the guide includes a third diversion section and a fourth diversion section, which are installed at intervals on the guide body; the third diversion section and the fourth diversion section are provided in multiple groups, and each adopts a central radial structure, arranged upward and downward along the height direction of the guide body; the third diversion section and the fourth diversion section are used to make the return air evenly distributed in the heat exchanger.

[0027] By adopting the above technical solution, the hot and cold air blower has a casing, a first heat exchange mechanism, a second heat exchange mechanism, and a heat circulation mechanism. The casing has a first chamber and a second chamber to house and enclose the heat exchange mechanisms to prevent air leakage. The first heat exchange mechanism exchanges heat with the outside in the upper layer, and the second heat exchange mechanism provides hot and cold air in the lower layer. The heat circulation mechanism realizes heat exchange. The casing has load-bearing components to support the weight of the equipment and provides forklift access. One side of the first chamber has a power supply mechanism for quick power connection and emergency power cut-off. The second chamber is equipped with guide components, which are quickly connected to the casing via quick-release components. The guide components include a third and fourth diversion section installed at intervals. Each of the two sections has multiple sets and adopts a central radial structure arranged vertically along the height direction, so that the return air is evenly distributed in the heat exchanger, which can improve heat exchange efficiency and achieve more efficient heat exchange. In addition, the guide components can be quickly disassembled and assembled, which facilitates cleaning and maintenance of related components.

[0028] Preferably, protective components are installed at the return air inlet and the air outlet, respectively, for protecting the second heat exchange mechanism.

[0029] By adopting the above technical solution, the hot and cold air blower includes a casing, a first heat exchange mechanism, a second heat exchange mechanism, and a heat circulation mechanism. The casing has a first chamber and a second chamber to house and enclose the first and second heat exchange mechanisms to prevent air leakage. The first heat exchange mechanism exchanges heat with the outside in the upper layer, and the second heat exchange mechanism realizes indoor heating or cooling in the lower layer. The heat circulation mechanism is responsible for heat exchange. The casing has load-bearing components to support the weight of the equipment and provides forklift access. One side of the first chamber has a power supply mechanism for quick power connection and emergency power cut-off. On this basis, protective components are installed at the return air inlet and the air outlet to protect the second heat exchange mechanism and prevent biological agents from entering the flow-changing drive components, causing safety problems and equipment failures. If the protective component is diamond-shaped and its diagonal is consistent with the airflow direction, the frontal area can be reduced. The arc-shaped part at one end can guide the airflow along the axial direction of the air duct, reducing the eddy current loss at the edge of the protective component. Compared with a circular protective ring, the wind resistance coefficient is reduced, the airflow at the air outlet is increased, and the uniformity of the return air at the return air outlet is improved.

[0030] Preferably, the protective component has a rhomboid shape, and the diagonal direction of the rhomboid shape is consistent with the airflow direction, thereby reducing the windward area of ​​the rhomboid structure; an arc-shaped part is fitted on one end of the protective component near the internal space of the first chamber, and the arc-shaped part is used to guide the airflow along the axial direction of the air duct, thereby reducing the eddy current loss at the edge of the protective component.

[0031] By adopting the above technical solution, the hot and cold air blower uses a casing to enclose the first and second heat exchange mechanisms to prevent air leakage. The first heat exchange mechanism exchanges heat with the outside in the upper layer, while the second heat exchange mechanism supplies hot and cold air in the lower layer. The heat circulation mechanism realizes heat exchange. The casing load-bearing component supports the weight of the equipment and provides forklift access. The power supply mechanism can quickly connect to the power supply and cut off power in an emergency. The protective component adopts a diamond shape with its diagonal aligned with the airflow direction, reducing the frontal area. Its arc-shaped part near the inner space of the first chamber guides the airflow to flow axially along the air duct, reducing eddy current loss at the edge of the protective component. Compared with a circular protective ring, the wind resistance coefficient is reduced by 25% - 30%, the air volume at the outlet is increased by 8% - 12%, and the uniformity of the return air at the return air outlet is improved by 10%. It can effectively block foreign objects with a diameter >10mm, prevent personnel's fingers from entering the air duct, and protect the second heat exchange mechanism.

[0032] Preferably, the housing has an electrical cabinet chamber, in which the power supply mechanism is assembled. The electrical cabinet chamber is located on one side of the first chamber, allowing the power supply mechanism to be cooled by the circulating air of the first heat exchange mechanism. The electrical cabinet chamber has a power supply opening and an electrical control opening, which are distributed at right angles on the housing. A power supply movable door is installed at the power supply opening, with one end rotatably connected to the housing and the other end quickly connected to the housing via a locking mechanism. The power supply movable door provides a channel for quick power connection and emergency power cut-off. An electrical control movable door is installed at the electrical control opening, with one end rotatably connected to the housing and the other end quickly connected to the housing via a locking mechanism. The electrical control movable door provides a channel for installing the power supply mechanism and for quick maintenance.

[0033] By adopting the above technical solution, the casing has an electrical cabinet chamber in which the power supply mechanism is assembled and located on one side of the first chamber. The power supply mechanism can be cooled by the circulating air of the first heat exchange mechanism, ensuring stable operation. The power supply chamber opening and the electrical control chamber opening are distributed at right angles. Combined with a power supply door and an electrical control door that can be quickly disconnected via locking mechanisms, this achieves separation of power supply access and electrical control maintenance. The power supply door provides a channel for quick power connection and emergency power cut-off, allowing for rapid power disconnection in case of accidents to prevent greater losses. The electrical control door provides a channel for installing the power supply mechanism and a quick maintenance channel, facilitating the installation and maintenance of the power supply mechanism. The overall design integrates with the casing, the first heat exchange mechanism, the second heat exchange mechanism, and the heat circulation mechanism, completely eliminating the need for on-site refrigerant connection procedures in separate structures. No professionally qualified personnel are required, significantly simplifying the installation process and reducing qualification requirements. With forklift access, it can be quickly disassembled and relocated, suitable for temporary locations such as construction sites and exhibitions, significantly reducing the high labor and disassembly costs in Western Europe and improving the product's regional applicability.

[0034] In summary, this application has the following beneficial effects: 1. The design employs a casing with a first chamber and a second chamber to house the first and second heat exchange mechanisms and to prevent air leakage. The first heat exchange mechanism exchanges heat with the outside in the upper layer, while the second heat exchange mechanism generates heat or cools in the lower layer. The casing features an integrated load-bearing component to provide forklift access. A power supply mechanism for quick power connection and emergency power cut-off is installed on one side of the first chamber. This design solves the problems of cumbersome disassembly and assembly, reliance on qualified personnel, and inconvenience in relocation associated with split-type designs. It significantly reduces labor and disassembly / assembly costs in Western Europe and is suitable for temporary site requirements. 2. Through the layout of upper and lower dual heat exchangers, variable frequency jet enthalpy enhancement technology and optimized flow guiding structure, the heating capacity is increased to 50kW, and the low temperature heating limit is as low as -35℃, which meets the temperature control requirements of large temporary venues. 3. The R454B low-GWP refrigerant is used to replace R410A, and a drainage system with a drip tray, inclined water collection trough, drain pipe and heating belt is used to meet European environmental standards and avoid the safety hazards of floor icing caused by the random discharge of defrost water and condensate. 4. The adjustable-angle air guide, double-ring diversion air curtain, central radial return air guide vane and low wind resistance protection structure optimize airflow distribution, reduce eddies and wind resistance, improve heat exchange efficiency, and the modular quick-disassembly design facilitates maintenance and cleaning. Attached Figure Description

[0035] Figure 1 This is an overall structural view of an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 2 This is a front view of an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 3 This is a rear view of an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 4 This is an internal front view of an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 5 This is an external left view of an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 6 This is an external right view of an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 7 This is a structural view of the guide component in an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 8 This is a structural view of the quick-lock component in an integrated built-in variable frequency air source heat pump air cooler disclosed in an embodiment of this application; Figure 9 This is a schematic diagram of the working principle of an integrated built-in variable frequency air source heat pump hot and cold air blower disclosed in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures: 1. Casing; 11. First Chamber; 110. First Chamber Opening; 111. Second Chamber Opening; 12. Second Chamber; 120. Return Air Opening; 121. Air Outlet; 13. First Air Guide Component; 14. Second Air Guide Component; 15. Load-bearing Component; 16. Electrical Cabinet Chamber; 160. Power Supply Opening; 161. Electrically Controlled Door; 162. Power Supply Door; 163. Locking Component; 2. First Heat Exchange Mechanism; 21. First Heat Exchange Component; 22. Airflow Drive Component; 220. Double-Ring Diverter Impeller; 3. Second Heat Exchange Mechanism; 31. Second heat exchange component; 32. Converter drive component; 4. Heat circulation mechanism; 5. Power supply mechanism; 51. Power input box; 510. Industrial power socket; 511. Emergency switch button; 52. Electrical control box; 6. Quick-lock component; 61. Quick-lock post; 62. Quick-lock block; 63. Metal elastic buckle; 64. Second annular groove; 65. Locking ring; 7. Liquid collection component; 71. Water collection tank; 72. Drainage component; 8. Guide component; 81. Third diversion section; 82. Fourth diversion section; 83. Quick release component; 9. Protective component. Detailed Implementation

[0037] The present application will be further described in detail below with reference to the accompanying drawings.

[0038] This application discloses an integrated hot and cold air blower with a built-in variable frequency air source heat pump. See also... Figures 1 to 3The system includes a housing 1, a first heat exchange mechanism 2, a second heat exchange mechanism 3, and a heat circulation mechanism 4. The housing 1 has at least a first chamber 11 and a second chamber 12 for accommodating the first heat exchange mechanism 2 and the second heat exchange mechanism 3, and enclosing them to prevent air leakage. The first heat exchange mechanism 2 is installed in the first chamber 11 and is used for heat exchange with the outdoor environment. The second heat exchange mechanism 3 is installed in the second chamber 12 and is used to supply hot or cold air to the indoor space to achieve heating or cooling functions. The first heat exchange mechanism 2 and the second heat exchange mechanism 3 are respectively connected to the heat circulation mechanism 4, which is responsible for the absorption, compression, transfer, and release of heat to achieve heat exchange. The first heat exchange mechanism 2 is located above the second heat exchange mechanism 3. The first chamber 11 has a first opening 110 and a second opening 111, which are respectively connected to the first chamber 11. The second chamber 12 has a return air inlet 120 and an air outlet 121, which are respectively connected to the second chamber 12. A load-bearing component 15 is provided on the housing 1, integrally formed with the housing 1, for supporting the weight of the entire equipment and providing a forklift operating passage. A power supply mechanism 5 is mounted on one side of the first chamber 11, enabling quick power connection and emergency power-off functions.

[0039] In one embodiment, see Figures 2 to 4 The casing 1, through the arrangement of a first chamber 11 and a second chamber 12, forms two air duct chambers that respectively enclose the first heat exchange mechanism 2 and the second heat exchange mechanism 3. The casing adopts a two-layer integrated design, achieving an integrated indoor and outdoor fan duct air supply structure. Furthermore, by incorporating a load-bearing component 15 integrally connected to the casing 1, the weight of the entire equipment can be supported, and a forklift access is provided. Combined with the two-layer integrated design of the casing 1 and the first and second chambers 11 and 12, the on-site refrigerant connection process of the separate structure is completely eliminated, requiring no professionally qualified personnel, significantly simplifying the installation process and reducing qualification requirements. The integrated design, along with the forklift access, allows for quick disassembly and relocation, perfectly adapting to temporary locations such as construction sites and exhibitions. This significantly reduces the high labor and disassembly costs in Western Europe, improving the product's regional applicability.

[0040] In other embodiments, the number of the first chamber 11 and the second chamber 12 can be increased by an equal amount according to site requirements, forming an integrated indoor and outdoor fan with multiple air duct chambers. This further enhances the flexibility and adaptability of the equipment, meeting the requirements of sites of different sizes and layouts. Multiple air duct chambers can operate in parallel, effectively improving heat exchange efficiency and ensuring stable operation of the equipment under various working conditions. At the same time, the integrated design maintains the integrity and ease of disassembly and relocation of the equipment, facilitating rapid deployment and relocation.

[0041] In one embodiment, see Figures 3 to 5 The first cavity 110 is specifically an outdoor return air vent, used to introduce heat from the outdoor environment. The second cavity 111 is specifically an outdoor air outlet, used to exhaust outdoor air that has exchanged heat with the first heat exchange mechanism.

[0042] In one embodiment, see Figures 3 to 5 The return air inlet 120 is specifically an indoor return air inlet. Two sets of return air inlets 120 are provided for connecting indoor return air and fresh air supply, which can enhance heat exchange efficiency, reduce airflow pulsation, and introduce fresh outdoor air. In other embodiments, all inlets can be connected to indoor return air to further enhance heat exchange efficiency and reduce airflow pulsation. The air outlet inlet 121 is specifically an indoor air outlet, and one set of air outlet inlets 121 is provided.

[0043] In one embodiment, see Figure 2 and Figure 3 The heat circulation mechanism 4 includes an integrated heat pump circulation system. This integrated heat pump circulation system is responsible for the absorption, compression, transfer, and release of heat. It is installed inside the casing 1 on one side of the second chamber 12, below the first heat exchange mechanism 2. The integrated heat pump circulation system adopts variable frequency vapor injection enthalpy enhancement technology, combined with R454B environmentally friendly refrigerant. The variable frequency vapor injection enthalpy enhancement technology enables the lowest ambient temperature for heating to be as low as -35℃, demonstrating strong adaptability to low-temperature conditions. Using R454B as the refrigerant, its GWP value is less than one-quarter that of R410A, which improves the environmental performance of the equipment and reduces carbon dioxide emissions.

[0044] Specifically, see Figure 3 and Figure 4 A first guide element 13 with angle adjustment function is installed at the first cavity 110. It can change the direction of airflow entering the first heat exchange mechanism 2, thus both guiding the airflow and protecting the first heat exchange mechanism 2. A second guide element 14 with angle adjustment function is installed at the second cavity 111. It can change the direction of airflow exiting the first heat exchange mechanism 2, and similarly serves to guide the airflow and protect the first heat exchange mechanism 2. The first guide element 13 and the second guide element 14 are quickly connected to the housing 1 via quick-locking parts 6.

[0045] In one embodiment, see Figure 2 and Figure 3The first guide component 13 includes a first guide plate and a first guide vane. The first guide plate is quickly connected to the housing 1 via a quick-locking component 6 and is assembled at the first cavity opening 110. Both ends of the first guide vane are rotatably connected to the first guide plate. Specifically, both ends of the first guide vane are provided with plastic elastic locking shafts with first annular grooves. The inner side of the locking shafts integrates ratchet teeth, and the angle of the first guide vane is adjustable in 5° increments. The inner wall of the first guide plate has a groove that matches the locking shaft, and a positioning groove is machined on the inner side of the groove corresponding to the position of the ratchet teeth. By manually pressing the locking shafts at both ends of the first guide vane, the elastic deformation of the plastic engages the locking shafts with the grooves in the housing 1. After the locking shafts spring back, the first annular grooves engage with the grooves, thereby achieving axial fixation.

[0046] When adjusting and locking the angle, manually turn the guide vane. The pawl will slide along the positioning groove, and each groove corresponds to a fixed angle. After releasing your hand, the pawl will engage with the positioning groove, and the angle will be locked by the elastic force of the plastic. It can be adjusted without tools, which is convenient and low cost.

[0047] Similarly, the second guide component 14 includes a second guide plate and a second guide vane. The second guide plate is quickly connected to the housing 1 via a quick-locking component 6 and is assembled at the second cavity opening 111. Both ends of the second guide vane are rotatably connected to the second guide plate. Both ends of the second guide vane are also provided with plastic elastic snap-fit ​​shafts with first annular grooves. The snap-fit ​​shafts have integrated ratchet teeth on their inner sides, and the angle of the second guide vane can be adjusted in 5° increments. The inner wall of the second guide plate is also provided with a slot that matches the snap-fit ​​shaft. The inner side of the slot has a positioning groove machined at the position corresponding to the ratchet teeth. By manually pressing the snap-fit ​​shafts at both ends of the second guide vane, the elastic deformation of the plastic is used to snap the snap-fit ​​shafts into the slots of the housing 1. After the snap-fit ​​shafts spring back, the first annular groove engages with the slot, achieving axial fixation.

[0048] By adopting the above solution and setting adjustable first and second guide vanes, dynamic airflow control can be achieved, solving the problems of uneven airflow, poor adaptability to operating conditions, and weak environmental adaptability in existing technologies. This not only enhances the environmental adaptability of indoor and outdoor fans in complex temporary locations (such as construction sites, exhibition venues, and performance venues), reducing the reduction in heat exchange efficiency caused by complex airflow around the site, but also, in conjunction with the design of "quick assembly / disassembly and forklift access," further improves the equipment's adaptability to temporary locations. Furthermore, it helps address issues related to "environmental protection and lifespan," reducing the erosion of heat exchangers by rainwater and dust, and lowering the frequency of equipment maintenance; simultaneously, it optimizes airflow to reduce energy consumption.

[0049] In one embodiment, see Figure 8The quick-lock component 6 includes a quick-lock pin 61 and a quick-lock block 62. The quick-lock pin 61 is fixedly mounted on the housing 1, and its end has a trapezoidal cross-section. The quick-lock block 62 is fixedly mounted on the first or second guide plate. The quick-lock block 62 is provided with a metal elastic buckle 63, and a receiving groove is formed on the quick-lock block 62 to accommodate the metal elastic buckle 63, so that the metal elastic buckle 63 can freely extend and retract, thereby realizing unlocking or locking. The quick-lock pin 61 is provided with a second annular groove 64, and a locking ring 65 is fitted on the second annular groove 64, and the locking ring 65 is slidably connected to the quick-lock pin 61.

[0050] When the guide plate is pressed in, the metal elastic buckle 63 is pushed into the receiving groove by the end of the quick-locking post 61 until the metal elastic buckle 63 moves to the second annular groove 64. The metal elastic buckle 63 pops out and locks between the locking ring 65 and the quick-locking post 61, completing the locking. If the guide plate needs to be removed, press down on the guide plate. The guide plate moves the metal elastic buckle 63 across the locking ring 65. Then pull the guide plate outward. The metal elastic buckle 63 moves the locking ring 65 close to the end of the quick-locking post 61 until the locking ring 65 and the end of the quick-locking post 61 are tightly abutted. The metal elastic buckle 63 is fully retracted into the receiving groove, and the guide plate is completely disengaged from the locking post, realizing the unlocking of the guide plate. The above-mentioned guide plate structure improves heat exchange efficiency. Combined with environmentally friendly refrigerant and frequency conversion technology, energy efficiency is significantly improved, taking into account both heating capacity and energy saving. The maximum heating capacity can reach 50kW, far exceeding existing products, meeting the heating and cooling needs of large temporary venues.

[0051] In addition, see Figure 2 and Figure 3 The first flow guide 13 and the second flow guide 14 are connected to the housing 1 via quick-locking parts 6, facilitating rapid disassembly and cleaning, as well as cleaning the first heat exchange mechanism 2, ensuring stable heat exchange efficiency. Furthermore, the first flow guide 13 and the second flow guide 14 are made of special materials, possessing not only excellent flow guiding performance but also corrosion resistance and easy cleaning characteristics, further extending the equipment's service life and reducing maintenance costs.

[0052] Specifically, see Figures 2 to 4The first heat exchange mechanism 2 includes a first heat exchange component 21 and an airflow drive component 22. The first heat exchange component 21 is assembled in the first chamber 11 and installed near the first chamber opening 110. The first heat exchange component 21 is used for heat exchange with the outdoor environment. The first heat exchange component 21 is connected to the heat circulation mechanism 4. The airflow drive component 22 is assembled in the first chamber 11 and installed near the second chamber opening 111. The airflow drive component 22 is used to generate air curtain airflow and drive outdoor air to flow through the first heat exchange component 21 to enhance heat exchange. The airflow drive component 22 includes a flow-diverting base, a first flow-diverting section, and a second flow-diverting section. The flow-diverting base is fixedly assembled in the first chamber 11. The first flow-diverting section and the second flow-diverting section are synchronously rotated and installed on the flow-diverting base. The first flow-diverting section is used to realize the air curtain airflow, and the second flow-diverting section is used to generate the main heat exchange airflow of the first heat exchange component 21.

[0053] In one embodiment, the first heat exchanger 21 includes an outdoor heat exchanger, which is fixedly mounted in the first chamber 11 for exchanging heat with the outdoor environment.

[0054] In one embodiment, the airflow drive 22 further includes an axial fan, which is fixedly installed on the splitting base. The axial fan is used to drive the first splitting section and the second splitting section to rotate relative to the splitting base, thereby generating air curtain airflow and driving outdoor air to flow through the outdoor heat exchanger to enhance heat exchange.

[0055] In one embodiment, the first splitter section includes outer ring blades, and the second splitter section includes inner ring blades. The outer ring blades and inner ring blades combine to form a double-ring splitter impeller 220, which is fixedly connected to the output shaft of the axial flow fan.

[0056] Specifically, see Figures 2 to 4 The inner ring blades are configured with multiple blades. The angle between the airfoil chord of the inner ring blades and the vertical line of the fan shaft ranges from 15° to 25°, which enhances thrust and ensures the stability and velocity of the main heat exchange airflow. The blade tips of the inner ring blades are swept backward, with the offset angle being 3° to 5° smaller than that at the root, thereby reducing aerodynamic noise generated during high-speed rotation.

[0057] Furthermore, the outer ring blades are installed at an angle 15° to 20° relative to the inner ring blades, allowing the outer ring airflow to be ejected parallel to the heat exchanger surface, forming an air curtain covering the entire heat exchange area. The outer and inner ring blades are deployed in this manner to form a double-ring split-flow configuration. The air curtain technology generated by the outer ring blades reduces the interference of external heat flow on the outdoor heat exchanger during cooling operations, increasing the evaporator's heat exchange efficiency by 8% to 12% and improving the cooling energy efficiency ratio (EER) of the heat circulation mechanism 4 by 5% to 8%. During heating operations, it reduces the impact of external cold flow, reducing heat exchanger frost by 15% to 20% and improving the heating energy efficiency ratio (COP) of the heat circulation mechanism 4 by 6% to 10%, while also reducing energy loss during defrosting. This solves the problems of existing split-type units, such as low heating capacity (maximum 6kW), suitability only for residential rooms, inability to meet the heating and cooling needs of large temporary locations, and limited energy efficiency and low-temperature heating capacity.

[0058] In one embodiment, see Figures 2 to 4 The distance between the outdoor impeller and the second cavity opening 111 (outdoor air outlet) is within the following range: The value is 0.3D ≤ L ≤ 0.8D, where L is the distance between the outdoor impeller and the second chamber 111 (outdoor air outlet), and D is the diameter of the outdoor impeller. Within this range, if the distance L is less than 0.3D, the airflow will not diffuse sufficiently after exiting the impeller before entering the outdoor air outlet, easily generating vortices at the edge of the outlet, leading to a sharp increase in local resistance coefficient and an airflow attenuation rate of 15%~25%, accompanied by increased noise and high-frequency whistling. If the distance is greater than 0.8D, the excessively long flow channel will increase frictional losses between the airflow and the duct wall (first chamber 11), and the overall volume of the first chamber 11 will increase, violating the compact design principle of the integrated equipment. When L = 0.8D, the airflow attenuation rate due to frictional losses is approximately 5%~8%, which is still within an acceptable range.

[0059] In engineering practice, the optimal spacing is 0.5D of the outdoor impeller diameter. After the airflow is discharged from the impeller, it completes uniform diffusion within the flow channel with a spacing of 0.5D, resulting in a stable flow field distribution and an air outlet efficiency of over 90%, which is the ratio of the effective air volume of the fan to the theoretical air volume. It also has the best structural compatibility with the quick-release first guide element 13 and the second guide element 14, facilitating quick disassembly and cleaning of the outdoor heat exchanger while effectively controlling the volume of the first chamber 11.

[0060] Experiments have verified that when the spacing is set to 0.5D, it not only effectively avoids the problems of eddy current generation and excessive frictional loss, but also significantly reduces the noise level during equipment operation, fundamentally improving the high-frequency whistling phenomenon. Furthermore, this spacing design makes the overall structure of the equipment more compact, achieving a dual improvement in energy efficiency and low-temperature heating capacity while meeting the heating and cooling needs of large temporary venues, resulting in energy savings of over 20% compared to traditional split-type units.

[0061] Specifically, see Figures 2 to 4 A liquid collecting element 7 is installed on the first chamber 11. The liquid collecting element 7 is used to collect the liquid generated during the cleaning of the first heat exchange mechanism 2 and the liquid melted during the defrosting process. A drain element 72 is installed at one end of the liquid collecting element 7. The drain element 72 is arranged downward along the height direction of the casing 1 and extends out of the casing 1. The drain element 72 is used to guide the liquid out of the fan. A melting element is installed at the bottom of the liquid collecting element 7 to prevent the liquid from freezing again.

[0062] In one embodiment, the liquid collection component 7 includes a water receiving tray and a water collection trough 71. The water receiving tray is installed at the bottom of the outdoor heat exchanger, and the water collection trough 71 is opened on the casing 1 at an angle. The water receiving tray has several holes that communicate with the water collection trough 71. The drain component 72 includes a drain pipe, one end of which is connected to the lowest end of the water collection trough 71 relative to the casing 1, and the other end extends downward along the height direction of the casing 1 and exits the casing 1, thereby guiding the water in the water collection trough 71 to the outside of the indoor and outdoor fans. The melting component includes a heating belt, which is installed on the outer bottom of the water collection trough 71, and the power socket of the heating belt is installed on the side of the casing 1 for easy connection and disconnection of power.

[0063] Using the above solution, the defrosting water and condensate from the outdoor heat exchanger are discharged in an orderly manner through the water receiving pan, water collection tank 71 and drain pipe. The heating belt can avoid freezing and blockage, completely eliminate the safety hazard of ground freezing, and improve drainage efficiency and standardization.

[0064] Furthermore, the design exhibits optimal structural compatibility with the quick-release first and second guide components 13 and 14. The ability to be quickly disassembled and installed facilitates cleaning of the outdoor heat exchanger. The cleaning fluid, after falling into the collection unit 7, is then systematically discharged through the drain unit 72, completely eliminating the safety hazard of ground icing and improving drainage efficiency and standardization. Simultaneously, this design optimizes the overall structural layout of the equipment, making the connections between components more compact and rational, reducing space occupancy. Moreover, the heating belt's operating mode can be intelligently adjusted according to the actual ambient temperature, effectively reducing energy consumption while ensuring icing prevention.

[0065] Specifically, see Figures 2 to 4The second heat exchange mechanism 3 includes a second heat exchange element 31 and a flow-converting drive element 32. The second heat exchange element 31 and the flow-converting drive element 32 are respectively and spaced apart in the second chamber 12. The second heat exchange element 31 is installed near the return air inlet 120, and the flow-converting drive element is installed near the air outlet 121. The return air inlet 120 and the air outlet 121 are respectively connected to the second chamber 12. The second heat exchange element is connected to the heat circulation mechanism and is used to supply hot or cold air to the indoor space to achieve heating or cooling functions. The flow-converting drive element 32 drives indoor air to flow through the second heat exchange element, and after completing the heat exchange, it is transported back to the room through the air outlet 121.

[0066] In one embodiment, the second heat exchanger 31 includes an indoor heat exchanger, which is fixedly mounted in the second chamber 12 and installed near the return air inlet 120 for supplying hot or cold air to the indoor space.

[0067] In one embodiment, the commutator drive 32 includes a volute and a backward-curved centrifugal fan. The volute is installed in the second chamber 12, with its air inlet connected to the indoor heat exchanger and its air outlet connected to the air outlet 121. The backward-curved centrifugal fan is mounted inside the volute, and a centrifugal impeller is mounted on the output shaft of the backward-curved centrifugal fan, which is fixedly connected to the output shaft. The backward-curved centrifugal fan drives the centrifugal impeller, and the rotation of the impeller causes indoor air and fresh air to flow from the return air outlet 120 through the indoor heat exchanger. After completing the heat exchange, the air is transported back to the room through the duct connected to the air outlet 121, thereby supplying hot or cold air to the indoor space to achieve heating or cooling functions.

[0068] Specifically, see Figure 1 and Figure 2 The second chamber 12 is equipped with a guide 8, which is installed at the return air inlet 120. Its function is to guide the return air and fresh air supply in the chamber to be evenly distributed on the entire second heat exchanger 31. The guide 8 is quickly connected to the housing 1 by means of a quick-release piece 83.

[0069] In one embodiment, see Figure 7 The guide component 8 includes an indoor return air guide plate, a third diversion section 81, and a fourth diversion section 82. The indoor return air guide plate is quickly connected to the housing 1 via a quick-release component 83. Specifically, the quick-release component 83 has the same structure as the quick-lock component 6, enabling quick assembly and disassembly of the indoor return air guide plate from the housing 1, facilitating cleaning of the indoor heat exchanger. The third diversion section 81 and the fourth diversion section 82 are installed alternately on the body of the guide component 8. Multiple sets of the third diversion section 81 and the fourth diversion section 82 are provided, each adopting a central radial structure, arranged upwards and downwards along the height direction of the guide component 8 body. The third diversion section 81 and the fourth diversion section 82 are used to ensure uniform distribution of return air within the heat exchanger.

[0070] In one embodiment, the third diversion section 81 includes an upper return air guide vane, which is fixedly mounted on the return air guide plate and is mounted at an angle upward relative to the return air guide plate. The fourth diversion section 82 includes a lower return air guide vane, which is fixedly mounted on the return air guide plate and is mounted at an angle downward relative to the return air guide plate.

[0071] The tilt angle between the upper return air guide vane and the return air guide plate is carefully designed to effectively guide the return air to the heat exchanger at a specific angle, improving heat exchange efficiency. The lower return air guide vane is also precisely angled downwards, working in conjunction with the upper return air guide vane to create a uniform airflow distribution. This design allows the return air to fully contact the indoor heat exchanger as it passes through guide element 8, achieving more efficient heat exchange. Furthermore, the fixed assembly method of the upper and lower return air guide vanes is robust and reliable, maintaining stable performance during long-term use.

[0072] In this embodiment, there are two sets of upper return air guide vanes and two sets of lower return air guide vanes. In other embodiments, there may be three, four or five sets of upper return air guide vanes and lower return air guide vanes.

[0073] Specifically, see Figures 2 to 4 The distribution distances of the upper and lower return air guide vanes are obtained as follows: Return air inlet 120: Based on the circular inlet (adapted to common circular structures in air ducts), the center of the return air inlet 120 is defined as the origin O, and the distance from the edge of the return air inlet 120 to the origin is the radius R of the return air inlet 120, that is, the distance between the edge of the inlet and the origin is R.

[0074] Deflector grouping: The upper return air deflector (N series) and the lower return air deflector (M series) are grouped independently, and the number n in each group can be 2, 3, 4 and 5 (n≥2, n is a positive integer).

[0075] Regarding S1: The reference distance between a single set of upper return air guide vanes and the origin O. By default, S1 is taken as the distance from the first upper return air guide vane N1 to O. Regarding S2: The reference distance between a single set of lower return air guide vanes and the origin O. By default, S2 is taken as the distance from the first lower return air guide vane M1 to O. The distance between the guide vane and the edge of the return air cavity 120 = the radius R of the return air cavity 120 - the distance from the guide vane to the origin O, denoted as LNn or LMn.

[0076] Formula for the distance between the upper return air guide vane and the edge of the return air cavity opening 120: 1) Formula for the distance from the upper return air guide vane to the 120° origin O at the return air cavity opening: Let the number of upper return air guide vanes in each group be n (n=2, 3, 4, 5), and the distance from the kth upper return air guide vane (Nk, k=1, 2, ..., n) to the origin O be DNk, DNk=S1×a(k−1); Wherein, S1 is the reference spacing of the upper return air guide vanes (the distance from N1 to the origin O), and the optimal value range of S1 is 0.2R~0.3R, ensuring that N1 is located inside the cavity and does not block the central mainstream area; R is the radius of the return air cavity opening 120; a is the exponential growth coefficient, with a value range of 1.3~1.5, taking into account the balance between the spacing growth rate and wind resistance. If a<1.3, the increase is not obvious, and if a>1.5, the edge guide vanes are too close to the edge of the cavity opening); k is the guide vane number, k=1 corresponds to N1, and k=n corresponds to the outermost Nn.

[0077] 2) Formula for the distance from the upper return air guide vane to the 120mm edge of the return air cavity opening: The distance from the edge of the return air cavity 120 to the origin O is R. Therefore, the distance LNk between the k-th return air guide vane and the edge of the cavity is: LNk=R−DNk=R−S1×a(k−1); As a constraint, the outermost guide vane Nn must maintain a safe distance from the edge of the cavity, i.e., LNn≥0.05R, to avoid interference between the upper return air guide vane and the cavity wall, while reserving space for airflow diffusion.

[0078] Formula for the distance between the lower return air guide vane and the edge of the return air cavity opening 120: 1) Formula for the distance from the lower return air guide vane to the origin O: Let the number of each group of lower return air guide vanes be n (n=2, 3, 4, 5), and the distance from the kth lower return air guide vane (Mk, k=1, 2, ..., n) to the origin O be DMk: DMk=S2×b(k−1); Wherein, S2 is the reference spacing of the lower return air guide vanes (the distance from M1 to O), and its value ranges from 0.2R to 0.3R. It can be equal to S1 or slightly adjusted according to the difference in upper and lower return air loads. For example, if the return air load is large under heating conditions, S2 can be 0.28R. b is the lower return air exponential growth coefficient, and its value ranges from 1.3 to 1.5. It can be the same as a or adjusted according to the air resistance requirements of the upper and lower cavities. For example, if the air resistance on the upper outdoor side is large, b can be 1.35.

[0079] 2) Formula for the distance from the lower return air guide vane to the 120mm edge of the return air cavity opening: The distance LMk between the k-th lower return air guide vane and the edge of the cavity is: LMk=R−DMk=R−S2×b(k−1); As a constraint: as above, LMk≥0.05R, to ensure that the outermost guide vane does not interfere with the cavity wall.

[0080] In other embodiments, the upper and lower return air guide vanes can each be curved, ensuring even distribution of return air across the indoor heat exchanger. The curved vane design better conforms to the airflow trajectory, reducing wind resistance and improving return air efficiency. In practical applications, the radius of curvature of the curved vane can be adjusted according to the specific operating environment and requirements to achieve optimal return air performance. Simultaneously, the curved vane can increase the contact area between the guide vane and the air, further enhancing heat exchange efficiency.

[0081] Specifically, see Figure 4 and Figure 5 Protective components 9 are installed at the return air inlet 120 and the air outlet 121 respectively. The protective components 9 are used to protect the second heat exchange mechanism 3.

[0082] In one embodiment, see Figure 4 and Figure 5 The protective component 9 includes a protective ring. This protective ring is made of multiple iron rings of different radii welded together and is assembled at the return air inlet 120 and the air outlet 121. It can protect the indoor heat exchanger and prevent biological organisms from entering the converter drive component 32, thus avoiding life safety issues and equipment failure.

[0083] In other embodiments, the protective element 9 has a rhomboid shape, with the diagonal direction of the rhomboid aligned with the airflow direction, reducing the windward area of ​​the rhomboid structure. In this embodiment, the protective ring is composed of multiple rhomboid perforated meshes. Furthermore, an arc-shaped portion is fitted to one end of the protective element 9 near the interior space of the first chamber 11. This arc-shaped portion guides the airflow along the axial direction of the air duct, reducing eddy current losses at the edge of the protective element 9. Specifically, the arc-shaped portion includes miniature arc-shaped guide vanes, integrally injection molded with the protective ring. The miniature arc-shaped guide vanes are at an angle of 15° to 20° to the airflow direction, and their length is 1.2 times the side length of the rhomboid perforated mesh.

[0084] In the above design, the holes in the diamond-shaped mesh are distributed diagonally, effectively blocking foreign objects with a diameter greater than 10 mm, such as paper scraps and toy parts, while preventing people's fingers from entering the air duct. The aluminum alloy frame has high strength and better resistance to wind pressure deformation than round iron bars. The airflow enhancement guide vanes guide the airflow along the axial direction of the air duct, eliminating eddy current losses at the mesh edges. Compared to a circular protective ring, the drag coefficient is reduced by 25%~30%, the airflow at the outlet is increased by 8%~12%, and the uniformity of the return air at the return air inlet is improved by 10%.

[0085] Specifically, see Figure 1 , Figure 2 and Figure 6An electrical cabinet chamber 16 is provided on the casing 1, and the power supply mechanism 5 is assembled inside the electrical cabinet chamber 16. The electrical cabinet chamber 16 is located on one side of the first chamber 11, and can dissipate heat from the power supply mechanism 5 using the circulating air of the first heat exchange mechanism 2. The electrical cabinet chamber 16 has a power supply port 160 and an electrical control port, which are distributed at right angles on the casing 1. A power supply movable door 162 is installed at the power supply port 160. One end of the power supply movable door 162 is rotatably connected to the casing 1, and the other end is quickly detached from the casing 1 via a locking element 163. The function of the power supply movable door 162 is to provide a passage for quick power connection and emergency power-off function. An electrical control movable door 161 is installed at the electrical control port. One end of the electrical control movable door 161 is rotatably connected to the casing 1, and the other end is also quickly detached from the casing 1 via a locking element 163. The electrically controlled sliding door 161 provides access for installing the power supply mechanism 5 and for quick maintenance.

[0086] In one embodiment, see Figure 1 and Figure 2 The power supply mechanism 5 includes a power input box 51 and an electrical control box 52, which are assembled inside the electrical control chamber. The power input box 51 includes an industrial power socket 510 and an emergency switch button 511. The industrial power socket 510 and the emergency switch button 511 pass through the electrical control chamber and are installed on one side of the power supply access door 162, thus enabling quick installation, removal, relocation, and emergency power cut-off. The electrical control access door 161 is installed on the opposite side of the power supply access door 162, and the two doors are arranged at right angles to separate power access and electrical control maintenance.

[0087] See Figure 1 and Figure 2 Both the power input box 51 and the electrical control box 52 are sealed with movable doors for easy and quick opening and closing. They are equipped with industrial sockets for easy and quick power supply installation. Meanwhile, the emergency switch button 511 is located inside the power input box 51, allowing direct power disconnection without opening the cabinet door, ensuring rapid power cut-off in case of emergencies and preventing greater losses.

[0088] Furthermore, the aforementioned power supply and electronic control systems are integrated into a single unit, employing a two-tiered integrated structure. Indoor and outdoor heat exchangers and fans are also integrated, completely eliminating the need for on-site refrigerant connection in separate structures. This simplifies the installation process and lowers qualification requirements, eliminating the need for specialized personnel. The integrated design, coupled with forklift access, allows for rapid disassembly and relocation, making it perfectly suited for temporary locations such as construction sites and exhibitions. This significantly reduces the high labor and disassembly costs in Western Europe, enhancing the product's regional applicability.

[0089] In one embodiment, see Figure 1 , Figure 2 and Figure 6 The locking component 163 has the same structure as the quick-lock component 6, which can realize the quick opening and closing of the power-operated movable door 162 and the electric control movable door 161, and facilitate the quick installation and disconnection of the power supply, assembly of the power input box 51 and the electric control box 52, as well as maintenance of the electric control box 52.

[0090] The working principle of the integrated built-in variable frequency air source heat pump's hot and cold air blower in this application is as follows: See below. Figure 9 : This technical solution adopts an integrated upper and lower casing structure 1. The upper first chamber 11 houses the first heat exchange mechanism 2 (outdoor heat exchanger + double-ring split-flow axial fan), and the lower second chamber 12 houses the second heat exchange mechanism 3 (indoor heat exchanger + backward-curved centrifugal fan). The absorption, compression, transfer and release of heat are achieved through an integrated heat pump circulation system (including variable frequency jet enthalpy enhancement technology and R454B environmentally friendly refrigerant).

[0091] In cooling mode, the first heat exchange mechanism 2 acts as a condenser to discharge heat, while the second heat exchange mechanism 3 acts as an evaporator to absorb indoor heat and delivers it through ductwork. In heating mode, the four-way valve switches the refrigerant flow direction, and the first heat exchange mechanism 2 becomes an evaporator to absorb outdoor heat. After being compressed and heated by the heat pump cycle, the heat is released into the room by the second heat exchange mechanism 3. At the same time, the adjustable angle guides of the first cavity 110 and the second cavity 111 dynamically optimize the outdoor airflow direction. The central radial guide vane of the return air cavity 120 ensures that the indoor return air and fresh air supply flow evenly through the indoor heat exchanger. The outer ring blades of the double-ring split-flow fan form an air curtain to enhance heat exchange efficiency. The liquid collection component 7 and the heating belt enable the orderly discharge of defrost water and condensate. The entire system is designed for quick disassembly and maintenance through quick-lock components 6 and industrial sockets.

[0092] Addressing the numerous shortcomings of existing split-type products, this technical solution completely eliminates the on-site refrigerant connection process through an integrated design. Combined with forklift access and a quick-release structure, it solves the problems of cumbersome disassembly and assembly, reliance on qualified personnel, and inconvenient relocation associated with split-type products. This significantly reduces labor and disassembly costs in Western Europe and perfectly suits the needs of temporary sites. Through a dual-heat exchanger layout, variable frequency jet enthalpy enhancement technology, and optimized airflow structure, the heating capacity is increased to 50kW, with a low-temperature heating limit as low as -35℃. This solves the pain points of existing products, such as low heating capacity and poor adaptability to low-temperature conditions, meeting the temperature control requirements of large temporary sites. It adopts R... The 454B low-GWP refrigerant replaces R410A, and the drainage system, featuring a drip tray, inclined water collection trough 71, drain pipe, and heating belt, meets European environmental standards while avoiding the safety hazards of floor icing caused by the indiscriminate discharge of defrost water and condensate. Optimized airflow distribution, reduced eddies and wind resistance, and improved heat exchange efficiency are achieved through adjustable-angle air guides, a double-ring split air curtain, a central radiating return air guide vane, and a low-resistance protection structure. The modular, quick-release design facilitates maintenance and cleaning, solving the problems of uneven airflow and cumbersome maintenance found in existing products, thus achieving multiple improvements in convenience, large capacity, environmental friendliness, and safety.

[0093] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A type of integrated built-in variable frequency air source heat pump for both cooling and heating, characterized in that: It includes a housing (1), a first heat exchange mechanism (2), a second heat exchange mechanism (3), and a heat circulation mechanism (4); The housing (1) is provided with at least a first chamber (11) and a second chamber (12) for accommodating the first heat exchange mechanism (2) and the second heat exchange mechanism (3), and for enclosing the first heat exchange mechanism (2) and the second heat exchange mechanism (3) to prevent air leakage; The first heat exchange mechanism (2) is installed in the first chamber (11) for heat exchange with the outdoor environment; the second heat exchange mechanism (3) is installed in the second chamber (12) for supplying hot or cold air to the indoor space to achieve heating or cooling functions; the first heat exchange mechanism (2) and the second heat exchange mechanism (3) are respectively connected to the heat circulation mechanism (4), which is responsible for the absorption, compression, transfer and release of heat to achieve heat exchange; The first heat exchange mechanism (2) is located above the second heat exchange mechanism (3); The first chamber (11) has a first opening (110) and a second opening (111), which are connected to the first chamber (11) respectively; the second chamber (12) has a return air opening (120) and an air outlet opening (121), which are connected to the second chamber (12) respectively. The housing (1) is provided with a load-bearing component (15), which is integrally formed with the housing (1) to bear the weight of the entire equipment and provide a forklift operating channel; A power supply mechanism (5) is installed on one side of the first chamber (11), which can realize the functions of quick power supply and emergency power cut-off.

2. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 1, characterized in that: The first cavity (110) is equipped with a first guide (13) with angle adjustment function, which can change the direction of airflow entering the first heat exchange mechanism (2) and is used to guide the airflow and protect the first heat exchange mechanism (2). The second cavity (111) is equipped with a second guide (14) with angle adjustment function, which can change the direction of the airflow from the first heat exchange mechanism (2) and is used to guide the airflow and protect the first heat exchange mechanism (2).

3. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 2, characterized in that: The first flow guide (13) and the second flow guide (14) are quickly connected to the housing (1) via quick-locking components (6).

4. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 2, characterized in that: The first heat exchange mechanism (2) includes a first heat exchange component (21) and an airflow drive component (22). The first heat exchange component (21) is assembled in the first chamber (11) and installed near the first chamber opening (110). The first heat exchange component (21) is used to exchange heat with the outdoor environment. The first heat exchange component (21) is connected to the heat circulation mechanism (4). The airflow drive (22) is assembled in the first chamber (11) and installed near the second chamber opening (111). The airflow drive (22) is used to generate air curtain airflow and drive outdoor air to flow through the first heat exchanger (21) to enhance heat exchange.

5. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 4, characterized in that: The airflow drive component (22) includes a flow splitting base, a first flow splitting section and a second flow splitting section. The flow splitting base is assembled in the first chamber (11). The first flow splitting section and the second flow splitting section are synchronously rotated and installed on the flow splitting base. The first flow splitting section is used to realize the air curtain airflow, and the second flow splitting section is used to generate the main heat exchange airflow of the first heat exchange component (21).

6. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 1, characterized in that: The first chamber (11) is equipped with a liquid collecting device (7), which is used to collect the liquid generated during the cleaning of the first heat exchange mechanism (2) and the liquid melted during the defrosting process; one end of the liquid collecting device (7) is equipped with a drain device (72), which is arranged downward along the height direction of the casing (1) and extends out of the casing (1), and is used to guide the liquid out of the fan.

7. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 6, characterized in that: The liquid collecting component (7) is equipped with a melting component on its outer bottom, which is used to prevent the liquid from freezing again.

8. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 1, characterized in that: The second heat exchange mechanism (3) includes a second heat exchange component (31) and a flow conversion drive component (32). The second heat exchange component (31) and the flow conversion drive component (32) are respectively spaced apart in the second chamber (12). The second heat exchange component (31) is installed near the return air port (120), and the heat exchange drive component is installed near the air outlet port (121). The return air inlet (120) and the outlet air inlet (121) are respectively connected to the second chamber (12); The second heat exchanger is connected to the heat circulation mechanism (4). The second heat exchanger is used to supply hot air or cold air to the indoor space to achieve heating or cooling functions. The commutation drive (32) is used to drive indoor air to flow through the second heat exchanger, and after heat exchange, it is transported back to the room through the air outlet (121).

9. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 8, characterized in that: The return air inlet (120) is provided in at least two sets for connecting indoor return air and fresh air supply to improve heat exchange efficiency, reduce airflow pulsation and introduce fresh outdoor air; the air outlet inlet (121) is provided in at least one set.

10. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 1, characterized in that: The second chamber (12) is equipped with a guide (8), which is installed on the return air inlet (120) to guide the return air and fresh air supply to be evenly distributed on the entire second heat exchanger (31); the guide (8) is quickly connected to the housing (1) through a quick-release piece (83).

11. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 10, characterized in that: The guide (8) includes a third diversion section (81) and a fourth diversion section (82), which are installed at intervals on the body of the guide (8); the third diversion section (81) and the fourth diversion section (82) are provided in multiple sets, and each adopts a central radial structure, and are arranged upward and downward along the height direction of the body of the guide (8); the third diversion section (81) and the fourth diversion section (82) are used to make the return air evenly distributed in the heat exchanger.

12. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 11, characterized in that: Protective components (9) are respectively installed at the return air inlet (120) and the air outlet (121), and the protective components (9) are used to protect the second heat exchange mechanism (3).

13. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 12, characterized in that: The protective component (9) has a rhomboid shape, and the diagonal direction of the rhomboid shape is consistent with the airflow direction, which reduces the windward area of ​​the rhomboid structure; the protective component (9) is equipped with an arc-shaped part at one end near the internal space of the first chamber (11), and the arc-shaped part is used to guide the airflow along the axial direction of the air duct, reducing the vortex loss at the edge of the protective component (9).

14. The integrated built-in variable frequency air source heat pump for hot and cold air blowers according to claim 1, characterized in that: The housing (1) has an electrical cabinet chamber (16) on it. The power supply mechanism (5) is assembled in the electrical cabinet chamber (16), and the electrical cabinet chamber (16) is located on one side of the first chamber (11). The power supply mechanism (5) can be cooled by the circulating air of the first heat exchange mechanism (2). The electrical cabinet chamber (16) has a power supply port (160) and an electrical control port. The power supply port (160) and the electrical control port are distributed on the housing (1) at right angles. A power supply movable door (162) is installed at the power supply port (160). One end of the movable door (162) is rotatably connected to the housing (1), and the other end is quickly connected to the housing (1) via a locking element (163); the power movable door (162) is used to provide a channel for quick power access and emergency power cut-off function; an electric control movable door (161) is installed at the electric control cavity opening, one end of the electric control movable door (161) is rotatably connected to the housing (1), and the other end is quickly connected to the housing (1) via a locking element (163); the electric control movable door (161) is used to provide a channel for installing the power supply mechanism (5) and a quick maintenance channel.

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