A double-air-duct air conditioner and air energy water heater integrated main machine device and device platform thereof

Abstract

The application belongs to the technical field of new energy, and discloses a main machine device combined with a double-air-duct air conditioner and an air energy water heater and an equipment platform thereof. The main machine device comprises a shell, two groups of refrigerant circulation systems and an exhaust cavity. The refrigerant circulation system comprises an outer heat exchanger and a compressor. Each group of refrigerant circulation systems has an independent outer heat exchanger negative pressure cavity, which is composed of the outer heat exchanger, part of the shell and a back plate. A plurality of exhaust outlets of the outer heat exchanger negative pressure cavity are arranged on the back plate, and the exhaust outlets are provided with fans. An air outlet of the exhaust cavity is located on an exhaust cavity panel opposite to the fans. The air inlet, the outer heat exchanger, the outer heat exchanger negative pressure cavity, the fans, the exhaust cavity and the air outlet of the main machine device form a progressive layout of the air inlet and outlet path, in which the outer heat exchanger is arranged at the rear, and the fans and the exhaust cavity are arranged at the front. The application combines the air conditioner main machine and the air energy water heater main machine, removes the special air supply and exhaust channel of the outer heat exchanger of the air energy water heater, and reduces the floor area of the equipment platform.

Description

Technical Field

[0001] This invention belongs to the field of new energy technology, and in particular relates to a main unit and equipment platform that integrates a dual-duct air conditioner and an air source water heater. Background Technology

[0002] Currently, air conditioning units are installed on the equipment platform of fully furnished apartments, along with air source water heaters, such as... Figure 1 As shown. In current real-world pre-furnished apartment projects, the installation positions of the air source heat pump water heater unit and water tank on the equipment platform are very arbitrary, basically squeezed into any available space, and it is even less likely that the ventilation problem of the water heater unit's heat absorption evaporator will be properly addressed.

[0003] The heat in an air source heat pump water heater comes from the air. The heat released by the condenser of the air source heat pump water heater is mainly the heat absorbed by the evaporator from the air. If the evaporator of the water heater unit cannot effectively ventilate to the ambient atmosphere, the air outlet of the evaporator will circulate and short-circuit within the small space of the equipment platform, causing the temperature of the small space of the equipment platform to drop continuously. In turn, this further reduces the evaporation pressure of the evaporator and severely reduces the heating capacity. This phenomenon is more serious in the low-temperature season, and the heat pump unit of the water heater degenerates into an electric heating element.

[0004] like Figure 2 As shown, the pursuit of visual appeal by architects, owners, and society regarding the building's facade has led to the air conditioning units on the equipment platform being concealed by the facade's louvers. The classic rear-in, front-out air conditioning unit obstructs the exhaust of air from the outside atmosphere, resulting in a significant decrease in heat exchange performance. Medium-speed exhaust units (below 7 m / s) also obstruct the exhaust of air from the equipment platform, leading to increased exhaust static pressure, decreased exhaust velocity, and reduced airflow. A significant portion of the reduced exhaust airflow is blocked by the louvers and returned to the equipment platform, where it is re-drawn into the external heat exchanger, causing airflow short-circuiting. The diffusion and dilution effect of exhaust air passing through the facade louvers and entering the ambient atmosphere is severely suppressed. This results in excessively high condensing pressure and insufficient condensate cooling in the external heat exchanger during summer cooling operation, and excessively low evaporating pressure and a significant decrease in refrigerant circulation during winter heating operation. Consequently, the air conditioner cannot fully perform its function as a heat transporter, and the performance of the air conditioning unit on the equipment platform is significantly lower than laboratory data.

[0005] Residential central air conditioning units and air source water heaters have become standard configurations in the equipment platforms of fully furnished apartments; however, classic residential central air conditioning units and air source water heaters still have the following problems:

[0006] ① Performance degradation of the air conditioning unit and air source water heater on the equipment platform

[0007] The air conditioning unit and air source water heater unit located behind the louvers on the exterior facade of the equipment platform have their ventilation to the outside atmosphere obstructed. The diffusion and dilution effect of the exhaust air entering the ambient atmosphere through the louvers is severely suppressed. This results in excessively high condensing pressure and insufficient cooling of the condensate in the external heat exchanger during summer cooling operation, and excessively low evaporating pressure and a significant reduction in refrigerant circulation during winter heating operation. As a result, the air conditioning unit and air source water heater cannot fully perform their function as heat transporters, and the thermal performance of the air conditioning unit and air source water heater on the equipment platform is significantly reduced compared to laboratory data.

[0008] ② Redundant allocation of equipment resources

[0009] Both air conditioning units and air source water heater units are vapor compression refrigeration equipment. Not only do they have the same working principle, but their electromechanical structures are also very similar. They are both compressor-driven refrigerant circuit systems consisting of a compressor, condenser, expansion valve, and evaporator, as well as high-temperature heat source medium systems and low-temperature heat source medium systems driven by fans and water pumps.

[0010] Configuring two physically independent air conditioning units and heat pump water heaters with the same principle and similar structure in a confined space is a duplication of refrigeration equipment resources and a waste of refrigeration equipment resources.

[0011] ③ The area of ​​inefficient and ineffective equipment platforms increases.

[0012] Residential central air conditioning units and air source water heaters (including the unit and water tank) have become standard configurations on residential equipment platforms;

[0013] Because air conditioning units, air source water heaters, and other equipment on the residential equipment platform need to be arranged separately as independent units, and air intake channels need to be reserved for the external heat exchangers of the air conditioning units with rear-inlet / front-outlet and side-inlet / side-outlet air duct structures, as well as air intake and exhaust channels for the evaporators of the air source water heaters, the distance between the central air conditioning units, air source water heaters, and water tanks on the equipment platform increases, resulting in an increase in ineffective and inefficient area. Summary of the Invention

[0014] To address the aforementioned technical problems, this invention provides a main unit that integrates a dual-duct air conditioner and an air source water heater;

[0015] Another objective of this invention is to provide a device platform that integrates a dual-duct air conditioner and an air source water heater.

[0016] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0017] A main unit integrating a dual-duct air conditioner and an air source water heater includes a housing, two sets of refrigerant circulation systems disposed within the housing, and an exhaust chamber; the refrigerant circulation system includes an external heat exchanger and a compressor;

[0018] Each refrigerant circulation system has an independent external heat exchanger negative pressure chamber, which consists of an external heat exchanger, a part of the shell, and a back plate.

[0019] The back plate is provided with several exhaust ports for the negative pressure chambers of the external heat exchanger. Each exhaust port is equipped with a fan, and the air outlet of the exhaust chamber is located on the exhaust chamber panel opposite the fan.

[0020] The air inlet, external heat exchanger, negative pressure chamber of the external heat exchanger, fan, exhaust chamber and air outlet of the main unit constitute a progressive air inlet and outlet path with the external heat exchanger at the rear and the fan and exhaust chamber at the front.

[0021] Furthermore, the external heat exchanger is a horizontal cross-section V-shaped finned tube heat exchanger assembly or a sawtooth-shaped zigzag finned tube heat exchanger assembly; the horizontal cross-section V-shaped finned tube heat exchanger assembly includes at least two flat plate finned tube heat exchangers; or it is composed of a V-shaped finned tube heat exchanger formed by bending flat plate finned tube heat exchangers; or it is composed of a flat plate finned tube heat exchanger and the V-shaped finned tube heat exchanger formed by bending flat plate finned tube heat exchangers; the cross-section of the horizontal cross-section V-shaped finned tube heat exchanger assembly perpendicular to the long side of the fin is zigzag.

[0022] The long sides of the fins of the flat plate finned tube heat exchanger are arranged in the vertical direction or close to the vertical direction in the horizontal air duct.

[0023] Furthermore, the horizontal cross-section V-shaped finned tube heat exchanger assembly has a V-shaped or N-shaped cross-section perpendicular to the long side of the fin, or is composed of at least two V-shaped finned tube heat exchangers arranged continuously.

[0024] Preferably, the cross-section of the horizontal cross-section V-shaped finned tube heat exchanger assembly perpendicular to the long side of the fins is W-shaped; preferably, the apex angle α of the V-shaped finned tube heat exchanger is 15° to 110°.

[0025] Preferably, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 90°.

[0026] Preferably, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 60°.

[0027] Furthermore, in the horizontal cross-section V-shaped finned tube heat exchanger assembly, one side of the cross-section perpendicular to the long side of the fin is the air inlet surface of the heat exchanger, and the other side is the air outlet surface of the heat exchanger; the air outlet surface belongs to the negative pressure chamber area of ​​the external heat exchanger.

[0028] Furthermore, the incident surface of the inlet airflow is each flat finned tube heat exchanger in the horizontal cross-section V-shaped finned tube heat exchanger assembly. The angle between the inlet airflow and the tip of each finned tube heat exchanger is an obtuse angle; the obtuse angle β is 97.5°~145°. The inlet airflow impacts the tip of each finned tube heat exchanger assembly at an obtuse angle β, and is reflected by the fin tip plate into the fin gap and flows to the negative pressure chamber of the outer heat exchanger.

[0029] Furthermore, the airflow entering each fin gap d is equal to the airflow intercepted by the vertical distance δ between the tips of the front and rear fins of the flat plate finned tube heat exchanger in the horizontal cross-section V-shaped finned tube heat exchanger assembly on the air inlet section.

[0030] δ=d·sinα / 2, where α is the apex angle of the V-shaped finned tube heat exchanger;

[0031] The vertical distance δ between the tips of the front and rear finned tube heat exchangers on the air inlet section is between 0.13d and 0.7d.

[0032] Preferably, the airflow velocity between the fins is 1 / 3 of the inlet velocity, corresponding to a vertex angle α of 39° and an incident obtuse angle β of 109.5° for the V-shaped finned tube heat exchanger.

[0033] Furthermore, the sawtooth-shaped zigzag-shaped finned tube heat exchanger assembly is composed of a flat plate finned tube heat exchanger, a V-shaped finned tube heat exchanger, and a baffle plate; the sawtooth-shaped zigzag-shaped finned tube heat exchanger assembly has a sawtooth shape on the cross-section perpendicular to the long side of the fins.

[0034] The copper tubes of the serrated zigzag-shaped finned tube heat exchanger assembly are parallel to the serrated edges; the finned plate assemblies of the finned tube heat exchanger are orthogonally fitted onto the copper tubes.

[0035] The serrated zigzag finned tube heat exchanger assembly, together with the upper and lower base plates and the left and right side plates, forms the negative pressure chamber of the external heat exchanger.

[0036] The finned copper tubes are parallel or nearly parallel to the upper and lower base plates, and obliquely intersecting with the left and right side plates.

[0037] The serrated zigzag finned tube heat exchanger assembly divides the heat exchange air duct into a front chamber and a rear chamber. The front chamber is the air inlet chamber, and the rear chamber is connected to the air intake of the ventilation unit and is the negative pressure chamber of the external heat exchanger.

[0038] Preferably, the finned copper tube forms an obtuse angle with the sidewall of the negative pressure chamber of the adjacent external heat exchanger.

[0039] Furthermore, the two external heat exchanger negative pressure chambers are arranged vertically or horizontally side by side. That is, the external heat exchangers are arranged vertically or horizontally side by side.

[0040] Furthermore, the back panel is provided with at least two exhaust vents; each exhaust vent is equipped with a fan, forming a fan wall; preferably, the fan is a centrifugal fan or an axial fan; more preferably, the centrifugal fan is a backward-curved external rotor centrifugal fan.

[0041] Preferably, the back panel is provided with 4 or 6 exhaust vents; each exhaust vent is equipped with a fan, forming a fan wall.

[0042] Furthermore, an exhaust section is provided at the air outlet.

[0043] Furthermore, the exhaust section is provided with several guide vanes; the guide vanes are arranged parallel to or nearly parallel to the louvers, or the guide vanes are arranged vertically and are provided with an angle to guide the exhaust airflow away from the air conditioning unit.

[0044] Furthermore, the air outlet area of ​​the exhaust cavity is 15-60% of the air inlet area of ​​the negative pressure cavity of the external heat exchanger.

[0045] Furthermore, the air outlet of the exhaust chamber is located in the middle or lower part of the exhaust chamber panel; preferably, the air outlet includes a horizontal strip or a vertical strip, which is disposed in the middle or lower part of the exhaust chamber panel.

[0046] Furthermore, a swooping exhaust section is provided at the air outlet; the swooping exhaust section is provided with several guide vanes.

[0047] Furthermore, a protruding exhaust section is provided at the air outlet; several guide plates are provided inside the protruding exhaust section.

[0048] Furthermore, the sides of the negative pressure chamber and exhaust chamber of the external heat exchanger are provided with a compressor chamber for housing the fluorine circuit assembly, including the compressor, gas-liquid separator, four-way valve, expansion valve and electrical box.

[0049] Furthermore, the air conditioning unit is also equipped with an intermediate heat exchanger, the two heat exchange medium channels of which are the refrigerant channel and the air conditioning water channel of the air conditioning unit, respectively; the refrigerant channel is connected to the refrigerant circuit of the air conditioning unit; the air conditioning water channel is connected to the indoor heat exchanger of the air conditioning unit.

[0050] A host equipment platform, wherein the host equipment is disposed within an outer corridor-type equipment platform, and the air outlet of the exhaust chamber faces the outer facade of the outer corridor-type equipment platform.

[0051] Furthermore, an exhaust section is provided at the air outlet; the exhaust section is provided adjacent to the louvers on the exterior facade of the outer corridor-type equipment platform.

[0052] Furthermore, a swooping exhaust section is provided at the air outlet; the swooping exhaust section is provided adjacent to the louvers on the exterior facade of the outer corridor-type equipment platform; the guide plates of the swooping exhaust section are parallel to or nearly parallel to the louvers.

[0053] Furthermore, an exhaust section is provided at the air outlet; the louvers on the exterior facade of the outer corridor-type equipment platform are provided with an opening structure that matches the exhaust section located in the middle or lower part of the exhaust cavity; the exhaust section in the middle or lower part of the exhaust cavity is embedded in the louver opening structure.

[0054] Furthermore, a protruding exhaust section is provided at the air outlet; the louvers on the exterior facade of the outer corridor equipment platform are provided with an opening structure that matches the protruding exhaust section located in the middle or lower part of the exhaust cavity; the protruding exhaust section in the middle or lower part of the exhaust cavity is embedded in the louver opening structure.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] ① Construct a low-resistance airflow path for the external heat exchanger that penetrates the louvers of the facade.

[0057] This invention features a vertical strip-shaped small-area air outlet on the exhaust chamber panel of the external heat exchanger. The air outlet is located near the horizontal midpoint of the vertical fan wall, equidistant from each fan. The exhaust air in front of the air outlet has a large flow cross-section, short path, and low resistance as it collects the exhaust air from each fan. After the air outlet, the exhaust airflow enters the vertical strip-shaped diving exhaust section. Under the constraint and guidance of multiple diving guide plates set in the vertical strip-shaped diving exhaust section, the exhaust airflow streamline is parallel or nearly parallel to the louvered windows on the exterior facade. The exhaust airflow passes through the louvered window assembly with low resistance and is discharged at high speed to the external atmosphere, achieving long-range diffusion and dilution.

[0058] This invention uses the exterior facade of the equipment platform as a reference surface for calculation. The air outlet area of ​​the external heat exchanger of the main unit is very small, significantly smaller than the air inlet area of ​​the exterior facade (less than 1 / 3). The air inlet area is large, the air inlet velocity is low, and the air inlet resistance is almost zero. The exhaust velocity is more than 3 times the average air inlet velocity, and the exhaust dynamic pressure head on the exterior facade is more than 9 times the air inlet dynamic pressure head. The exhaust airflow passes through the louvers of the exterior facade and enters the ambient atmosphere with a long range and good diffusion and dilution effect. This invention constructs a low-resistance airflow path for the entire external heat exchanger assembly that overcomes the short circuit of exhaust airflow recirculation. The thermal performance of the main unit on the equipment platform is not reduced compared with the laboratory data. The air conditioner and air source water heater complete their tasks as "heat transporters" with high quality and high efficiency.

[0059] ② Construct an external heat exchanger assembly structure to improve the body's energy density.

[0060] This invention utilizes a chain process in the external heat exchanger's airflow path: medium-speed air intake → fin planer deceleration → heat exchange on a massive fin heat exchange area on a large ventilation surface → convergence acceleration → fan pressurization → high-speed discharge in a dive-type exhaust section. With a fan as the power source and a massive, continuously arranged horizontal cross-section V-shaped finned tube heat exchanger assembly fin planer as the core, it achieves deceleration and smooth air distribution between the fins, constructing an efficient heat exchange airflow structure inside the air conditioning and water heater main unit, thereby improving the energy density of the external heat exchanger assembly and the main unit.

[0061] The present invention features a vertically arranged fan with the air inlet facing the external heat exchanger directly. This reduces the local resistance of the airflow turning upwards before the fan inlet in traditional multi-split air conditioners. Combined with the stepped planing of the fins and the throttling effect of the fin gaps, the uniformity of ventilation and heat exchange in the external heat exchanger is improved.

[0062] This invention overcomes the problem of uneven vertical ventilation heat exchange in traditional multi-split air conditioners, allowing the height of the external heat exchanger to exceed the traditional design of around 1200mm for multi-split air conditioners, reaching over 2000mm, thus further improving the energy density of the main unit of the air conditioning water heater.

[0063] ③Reduce the number of equipment, simplify the spatial structure, and reduce the floor space required.

[0064] This invention combines the air conditioner unit and the air source water heater unit into one, reducing the number of devices on the equipment platform and the amount of installation work. Furthermore, the installation of the air conditioner water heater unit on the equipment platform is extremely convenient and quick. The unit can be moved and placed "close" to the louvers on the exterior facade by the downward-facing exhaust section of the external heat exchanger. "Close" rather than "contact" eliminates the need for hard or soft connections between the exhaust section and the louvers, reducing the difficulty and workload of the air conditioner unit installation and also reducing the amplification and diffusion of vibration and noise from the air conditioner unit within the louvers through hard connections.

[0065] This invention combines the air conditioner unit and the air source water heater unit into one, greatly simplifying the equipment platform and the relationships between the equipment and the spatial structure on the equipment platform's facade. This includes the interrelationships between the power circuit, signal circuit, refrigerant piping, condensate water circuit, and external heat exchanger air circuit of the air conditioner unit and the air source water heater unit, as well as their spatial structure relationship with the equipment platform and the equipment platform's facade. As a result, the equipment platform becomes simpler, and equipment operation and maintenance become more convenient.

[0066] This invention combines the air conditioner unit and the air source water heater unit into one, eliminating the need for a dedicated air supply and exhaust channel for the external heat exchanger of the air source water heater, thus reducing the footprint of the equipment platform.

[0067] ④ Achieving a perfect balance between the decorative appeal of the exterior facade and the excellent thermal performance of the air conditioning unit.

[0068] Because of the modernization and fashion of architecture, because of the pursuit of visual effects of building facades by architects and owners, because of the whole society's love for "architecture is frozen music", and because of the function of louvers in sheltering from wind and rain and preventing wind, frost, snow and ice from corroding the equipment platform and air conditioning unit, the installation method of using louvers to hide the air conditioning unit on the equipment platform will become widespread and solidified. The problems of the classic "rear inlet and front exhaust" air duct of the air conditioning unit's external heat exchanger being obstructed and suppressed by louvers, resulting in increased exhaust static pressure, reduced air volume, and serious degradation of the heat exchange performance of the external heat exchanger are unavoidable.

[0069] The exhaust vent of the main unit of the present invention is vertically centered on the outer surface of the main unit body and centrally located in the lower part of the outer facade of the equipment platform. When the main unit is running on the equipment platform, the louvers on the outer facade corresponding to the two sides and the upper part of the main unit constitute the air inlet area, and the louvers corresponding to the small central vertical strip exhaust vent area on the exhaust vent panel of the main unit constitute the exhaust area. The air inlet area and the exhaust area are separated from each other, blocking the short circuit of exhaust backflow.

[0070] The exhaust vent of this invention is designed to fit the louvered window assembly on the exterior of the equipment platform, ensuring smooth exhaust from the external heat exchanger. Calculations using the exterior of the equipment platform as a reference plane show that the exhaust vent area of ​​the external heat exchanger is very small, significantly smaller than the air inlet area of ​​the exterior (less than 1 / 3). The exhaust velocity is more than 3 times the inlet velocity, and the exhaust dynamic pressure head on the exterior is more than 9 times the inlet dynamic pressure head. The exhaust airflow travels a long distance through the louvers into the ambient atmosphere, resulting in good diffusion and dilution effects. The thermal performance of the main equipment on the platform is not reduced compared to laboratory data, and its role as a "heat transporter" is completed with high quality and efficiency.

[0071] This invention eliminates the obstruction of the louvers to the exhaust of the external heat exchanger, effectively opens the air path of the external heat exchanger, and ensures the thermal performance of the main equipment, while maintaining the decorative appearance of the louver facade. It achieves a perfect unity between the decorative appearance of the equipment platform facade, the visual effect of the building facade, and the excellent thermal performance of the main equipment. Attached Figure Description

[0072] Figure 1 This is a schematic diagram of an existing air source heat pump water heater unit and water tank;

[0073] Figure 2 This is a top view of the airflow path of the external heat exchanger of a central air conditioning unit with a rear-inlet and front-outlet airflow. Due to the obstruction of the airflow by the louvers on the equipment platform, the static pressure of the outlet air increases, the airflow decreases, and some of the outlet air flows back to the air inlet.

[0074] Figure 3 This is a three-dimensional sectional view of the main unit integrating the dual-duct air conditioner and air source water heater in Example 1;

[0075] Figure 4 This is a front view of the main unit integrating the dual-duct air conditioner and air source water heater in Example 1;

[0076] Figure 5 This is a top view of the main unit integrating the dual-duct air conditioner and air source water heater in Example 1;

[0077] Figure 6 This is a three-dimensional structural diagram of a horizontal cross-section V-shaped finned tube heat exchanger assembly.

[0078] Figure 7 A horizontal cross-sectional view of the air conditioner unit during operation, showing how the "fin planer" at the fin gap inlet intercepts the incoming airflow, performs a stepped planing to reflect and slow it down, and then flows into the fin gap to complete heat exchange with the fins before being discharged from the fin gap.

[0079] Figure 8 This is a top view of the airflow operation of the main unit integrating the dual-duct air conditioner and air source water heater in Example 1.

[0080] Figure 9 This is a longitudinal vertical cross-sectional view of the airflow of the main unit integrating the dual-duct air conditioner and air source water heater in Example 1.

[0081] Figure 10 This is a schematic diagram of the main equipment system integrating a dual-duct air conditioner and an air source water heater in Example 1;

[0082] Figure 11 The airflow distribution diagram of the main unit integrating the dual-duct air conditioner and air source water heater in Example 1 is shown on the outer facade of the equipment platform.

[0083] Figure 12 This is a front view of the main unit integrating the dual-duct air conditioner and air source water heater in Example 2;

[0084] Figure 13 This is a longitudinal vertical sectional view of the main unit integrating the dual-duct air conditioner and air source water heater in Example 2.

[0085] Figure 14 This is a vertical sectional view of the air conditioning unit in Example 3, where the air outlet is located at the lower part of the exhaust cavity panel.

[0086] Figure 15 This is a schematic diagram of an air conditioning system with an intermediate heat exchanger that produces air conditioning water for the indoor unit, as shown in Example 4.

[0087] Figure 16 This is a front view of the air conditioning unit with a horizontally convex exhaust section, as shown in Example 6.

[0088] Figure 17This is a vertical sectional view of the horizontal strip-shaped protruding exhaust section of the air conditioning unit embedded in the louver opening structure of the equipment platform in Example 6.

[0089] Figure 18 This is a top view of the fan wall front main unit structure of the sawtooth zigzag finned tube heat exchanger assembly in Example 5;

[0090] Figure 19 This is a top view of the airflow of the front-mounted main unit of the fan wall in Example 5, which is the serrated zigzag finned tube heat exchanger assembly.

[0091] Figure 20 A top view of the main equipment structure with the exhaust airflow laterally drifting from the exhaust cavity of the front fan wall of the rear-mounted finned tube heat exchanger assembly.

[0092] Figure 21 A top view of the airflow operation of the front fan wall side exhaust airflow drifting laterally onto the main unit equipment;

[0093] Figure 22 A schematic diagram showing the distribution of the air inlet and outlet surfaces on the exterior of the equipment platform during summer operation of the main unit, with the exhaust airflow from the front-mounted fan wall laterally drifting towards the main unit.

[0094] Figure 23 A schematic diagram showing the vertical airflow of the building converging and moving upwards during summer operation when a side exhaust fan is installed on the equipment platform. Detailed Implementation

[0095] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments without creative effort are within the scope of protection of this application.

[0096] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0097] In the description of this invention, it should be understood that the terms "lateral", "longitudinal", "length", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0098] Definition: The direction perpendicular to the exterior facade of the external corridor equipment platform is defined as longitudinal, and the direction parallel to the exterior facade of the external corridor equipment platform is defined as transverse.

[0099] Example 1

[0100] like Figures 3-5 As shown, a main unit integrating a dual-duct air conditioner and an air source water heater is presented.

[0101] It includes a housing 1, two sets of refrigerant circulation systems disposed within the housing, and an exhaust chamber 3; the refrigerant circulation system includes an external heat exchanger 2 and a compressor 41;

[0102] Each refrigerant circulation system has an independent external heat exchanger negative pressure chamber 22, which consists of an external heat exchanger 2, a part of the shell, and a back plate 21.

[0103] The two external heat exchanger negative pressure chambers are arranged vertically, that is, the external heat exchangers are arranged vertically.

[0104] The external heat exchanger 2 and the negative pressure chamber 22 of the air conditioner are located at the upper part; the external heat exchanger 2 and the negative pressure chamber 22 of the air source water heater are located at the lower part.

[0105] The back plate 21 is provided with six exhaust vents 23 for the negative pressure chambers 22 of the external heat exchangers. Each exhaust vent 23 is equipped with a fan 24, forming a fan wall. The fan 24 is located inside the exhaust chamber 3 and is a backward-inclined external rotor centrifugal fan.

[0106] Each external heat exchanger negative pressure chamber corresponds to one exhaust chamber 3, that is, the two exhaust chambers 3 are arranged vertically.

[0107] Each exhaust chamber 3 corresponds to one air outlet 31.

[0108] The negative pressure chamber 22 of the external heat exchanger of the air conditioner is provided with 4 exhaust vents 23; the negative pressure chamber 22 of the external heat exchanger of the air source water heater is provided with 2 exhaust vents 23.

[0109] The air inlet of the main unit, the external heat exchanger, the negative pressure chamber of the external heat exchanger, the fan, the exhaust chamber and the air outlet constitute the air inlet and outlet paths in a progressive layout with the external heat exchanger at the rear and the fan and exhaust chamber at the front.

[0110] The side of the external heat exchanger negative pressure chamber 22 and the exhaust chamber 3 is provided with a compressor chamber 4 for housing the fluorine circuit assembly including the compressor 41, gas-liquid separator 42, four-way valve, expansion valve and electrical box.

[0111] The area of ​​the air outlet 31 of the exhaust chamber is 15-60% of the air inlet area of ​​the negative pressure chamber 22 of the external heat exchanger.

[0112] The exhaust port 31 of the exhaust chamber is rectangular and is located in the middle of the exhaust chamber panel 32 opposite to the fan 24.

[0113] The air outlets 31 of the exhaust chamber are all located on the exhaust chamber panel 32 of the main unit equipment, and are set in the center, adjacent to each other, and independently vertically, forming vertical strip air outlets 31; the outer side of the vertical strip air outlets 31 is combined on the exhaust chamber panel 32 of the main unit equipment, and then connected to the combined vertical strip diving exhaust section 33, which fits the louver structure of the equipment platform facade.

[0114] In this embodiment, the connection between the combined vertical strip air outlet 31 on the exhaust chamber panel 32 of the main unit equipment and the combined vertical strip diving exhaust section 33 that fits the louver structure of the outer facade of the equipment platform can be achieved by riveting or by flange connection.

[0115] A swooping exhaust section 33 is installed at the air outlet 31; several guide vanes 34 are installed inside the swooping exhaust section 33. The guide vanes 34 of the swooping exhaust section 33 are parallel to or nearly parallel to the louvers of the equipment platform.

[0116] The deflector plate 34 is used to constrain and guide the direction of the exhaust airflow and connects to the louvers on the exterior facade.

[0117] In this embodiment, the small-area, downward-sloping exhaust section on the exhaust cavity panel of the air conditioning unit, which fits the louvers on the exterior facade of the equipment platform, is a vertically strip-shaped rectangular structure that is vertically extended and set in the middle of the exhaust cavity panel.

[0118] When the air conditioning unit in this embodiment is running, the exhaust airflow, which is pressurized by the centrifugal fan and sent into the exhaust chamber, is ejected at high speed (about 8m / s) from the small-area air outlet and enters the diving exhaust section 33. Under the constraint and guidance of the multiple guide plates 34 set in the diving exhaust section 33, the exhaust airflow rays are parallel or nearly parallel to the louver slats. The louver slats have the smallest interception area and the lowest interception resistance for the exhaust airflow. The exhaust airflow passes through the louver slats on the outer facade of the equipment platform and is discharged at high speed into the external atmosphere, achieving long-range diffusion and dilution.

[0119] like Figure 6-7As shown in the illustration, in one specific implementation, the external heat exchanger 2 in this embodiment is a horizontal cross-section V-shaped finned tube heat exchanger assembly. The horizontal cross-section V-shaped finned tube heat exchanger assembly consists of four flat-plate finned tube heat exchangers 37; or it can be composed of two continuously arranged V-shaped finned tube heat exchangers 40 with cross-sections perpendicular to the long side of the fins. Each V-shaped finned tube heat exchanger 40 consists of two flat-plate finned tube heat exchangers 37.

[0120] like Figure 7 As shown, the flat plate finned tube heat exchanger includes finned plates 110 and heat exchange tubes 115; multiple parallel finned plates 110 with a certain distance between them form a fin group; and the heat exchange tubes 115 pass through the finned plates 110 in a direction perpendicular to the plane of the finned plates 110.

[0121] Heat exchange tube 115 connects to lotus head gas collection tube 133 and refrigerant circuit 134.

[0122] At each V-shaped apex, the lotus-head gas collecting pipe 133 is set in a one-to-one correspondence with the V-shaped finned tube heat exchanger 40, and one set of lotus-head gas collecting pipe 133 serves to form two flat plate finned tube heat exchangers 37 in the V-shape.

[0123] The cross-section of the horizontal cross-section V-shaped finned tube heat exchanger assembly is a broken line type, or more specifically, a W type, with the cross-section perpendicular to the long side of the fins.

[0124] The long side of the fins in the flat plate finned tube heat exchanger 37 is set in the vertical direction or close to the vertical direction.

[0125] The apex angle α of the V-shaped finned tube heat exchanger is 15° to 110°.

[0126] As an optional implementation, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 90°.

[0127] As an optional implementation, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 60°.

[0128] like Figure 7 As shown, the horizontal cross-section V-shaped finned tube heat exchanger assembly has one side of the cross-section perpendicular to the long side of the fins as the heat exchanger air inlet side and the other side as the heat exchanger air outlet side; the air outlet side belongs to the negative pressure chamber 22 area of ​​the external heat exchanger.

[0129] The incident surface of the inlet airflow is each flat finned tube heat exchanger in the horizontal cross-section V-shaped finned tube heat exchanger assembly. The angle between the inlet airflow and the tip of each finned plate 110 on each flat finned tube heat exchanger 37 is an obtuse angle β. The obtuse angle β is 97.5° to 145°. The inlet airflow strikes the tip of each finned plate 110 at an obtuse angle β and is reflected by the fin tip plate into the fin gap and flows to the negative pressure chamber 22 of the outer heat exchanger.

[0130] The airflow rate entering each fin gap d is equal to the airflow intercepted by the vertical distance δ between the tips of the front and rear finned tube heat exchangers on the air inlet section.

[0131] δ=d·sinα / 2, where α is the apex angle of the V-shaped finned tube heat exchanger;

[0132] The vertical distance δ between the tips of the front and rear finned tube heat exchangers on the air inlet section is between 0.13d and 0.7d.

[0133] In one specific implementation, the airflow velocity between the fins is 1 / 3 of the inlet velocity, corresponding to a vertex angle α of 39° and an incident obtuse angle β of 109.5° for the V-shaped finned tube heat exchanger.

[0134] like Figure 8 and 9 As shown, in this embodiment, the air inlet 11, external heat exchanger 2, external heat exchanger negative pressure chamber 22, fan 24, exhaust chamber 3 and air outlet 31 of the main unit constitute an air inlet and outlet path with the external heat exchanger at the rear and the fan and exhaust chamber at the front.

[0135] This embodiment presents a main unit that integrates a dual-duct air conditioner and an air source water heater. It creatively reconstructs the structure of the external heat exchanger of the household air conditioner main unit, the air duct structure of the external heat exchanger, and the structure of the air conditioner main unit, thus creating conditions for the integration of the air conditioner main unit and the equipment platform.

[0136] ① Innovative structural design of air conditioning unit

[0137] Compared with classic household air conditioner main units, the core features of the main unit equipment in this embodiment are: it has two sets of refrigerant circulation systems set in the casing, adopts a horizontal cross-section V-shaped finned tube heat exchanger assembly with an ultra-large heat exchange area, places the horizontal cross-section V-shaped finned tube heat exchanger assembly at the rear in the overall structure, places the fan wall, exhaust cavity and air outlet at the front, and sets a small area exhaust outlet on the front exhaust cavity panel 32.

[0138] like Figure 6-7 As shown, the horizontal cross-section V-shaped finned tube heat exchanger assembly of this embodiment includes a W-shaped structure composed of four flat plate finned tube heat exchangers; or a W-shaped structure composed of a V-shaped finned tube heat exchanger formed by bending two flat plate finned tube heat exchangers; or a W-shaped structure composed of a flat plate finned tube heat exchanger and a V-shaped finned tube heat exchanger formed by bending flat plate finned tube heat exchangers; the cross-section of the finned tube external heat exchanger perpendicular to the long side of the fin is a broken line type.

[0139] In this embodiment, within the limited space of the main unit, at least one horizontal cross-section V-shaped finned tube heat exchanger assembly is installed vertically and horizontally, parallel to the air inlet surface of the air conditioning unit. A large external heat exchanger ventilation surface is obtained by unfolding the finned tube heat exchanger along its air inlet surface. Further unfolding on this large external heat exchanger ventilation surface creates a huge finned heat transfer surface, thereby effectively increasing the total heat transfer area S of the external heat exchanger, reducing the heat transfer temperature difference Δt of the external heat exchanger body, increasing evaporation pressure and reducing condensation pressure, and improving the cooling capacity Q and COP of the refrigeration and air conditioning system.

[0140] like Figure 4-5 As shown, this embodiment sets up a progressive layout of the air inlet, external heat exchanger assembly, fan wall, exhaust cavity, and exhaust cavity outlet of the external heat exchanger of the two sets of refrigerant circulation systems, namely the air conditioner unit and the water heater unit, forming two independent external heat exchanger air paths.

[0141] In this embodiment, two external heat exchanger negative pressure chambers 22 are arranged vertically. Each external heat exchanger negative pressure chamber 22 is composed of a bottom plate (i.e., the bottom plate of the shell 1), a side plate 25, a back plate 21, an external heat exchanger 2, and a top plate (i.e., the top plate of the shell 1). The bottom plate of the upper external heat exchanger negative pressure chamber 22 and the top plate of the lower external heat exchanger negative pressure chamber 22 are combined into one and share the same partition.

[0142] The back plate 21 is arranged with a horizontally continuous V-shaped finned tube heat exchanger assembly. The back plate 21 is provided with an exhaust port 23 for the negative pressure chamber of the external heat exchanger. The exhaust port 23 for the negative pressure chamber of the external heat exchanger corresponds to the air intake of the backward-inclined external rotor centrifugal fan. The air intake of the backward-inclined external rotor centrifugal fan faces the external heat exchanger 2.

[0143] The horizontally arranged V-shaped finned tube heat exchanger assembly serves as the air inlet for the negative pressure chamber 22 of the external heat exchanger. A centrifugal fan exhaust chamber 3 is installed on the outside of each backplate 21, with the outlet 31 of the exhaust chamber 3 having an area of ​​15-60% of the air inlet area of ​​the negative pressure chamber 22 of the external heat exchanger.

[0144] In this embodiment, a compressor chamber 4 is provided on the side of the air inlet 11, the external heat exchanger 2, the fan wall, the exhaust chamber 3, and the air outlet 31. Two sets of refrigerant circulation system compressors 41, four-way valves, expansion valves and other refrigerant circuit components, as well as electrical boxes and other circuit components are installed in the housing.

[0145] ② Innovative design of the inlet and outlet air fields of the external heat exchanger of the main equipment

[0146] This embodiment is a main unit that integrates a dual-duct air conditioner and an air source water heater. The air inlet 11, the negative pressure chamber 22 of the external heat exchanger, the exhaust chamber 3, and the air outlet 31 of the exhaust chamber constitute a progressive layout of air inlet and outlet with the external heat exchanger at the rear and the fan and exhaust chamber at the front, thus creating an external heat exchanger air inlet and outlet field with short path, low resistance, large air volume, and high heat exchange intensity.

[0147] like Figure 8 and 9 As shown, during the ventilation and heat exchange operation of each external heat exchanger in this embodiment, the airflow from the air inlet 11 to the air outlet 31 is powered by a centrifugal fan, and the heat exchange airflow undergoes two static pressure-dynamic pressure conversions. The first static pressure-dynamic pressure conversion enables the high-speed intake of airflow from the centrifugal fan's suction port, and the second static pressure-dynamic pressure conversion enables the high-speed discharge of airflow from the exhaust port 31 of the exhaust chamber. Furthermore, the airflow lines in and out of the fin gaps of the heat exchanger in this embodiment are zigzag airflow lines with two bends, located in a plane perpendicular to the long side of the fins, rather than in a plane parallel to the fins. These two points are the most essential motion characteristics of the overall ventilation and heat exchange process of the two external heat exchangers in this embodiment.

[0148] In this embodiment, each external heat exchanger establishes an inlet and outlet airflow field through the operation of multiple centrifugal fans on the corresponding fan wall: six centrifugal fans on the fan wall draw air from the negative pressure chamber of the external heat exchanger, creating negative pressure within the chamber. This draws ambient air at 0 Pa static pressure (gauge pressure) into the main unit at a medium speed (around 4 m / s) through the air inlet. The airflow is dispersed and slowed down by the stepped planing of the main body by multiple fin planers. It then flows at a low speed (below 2 m / s) through the fin gaps of the external heat exchanger to complete heat exchange. Afterward, it enters the negative pressure chamber of the external heat exchanger, where it converges and accelerates, resulting in a high-speed airflow. The airflow rapidly flows into the centrifugal fan intake, which has the lowest pressure (negative gauge pressure) along the entire path, completing the first static-dynamic pressure conversion. The high-speed airflow flowing into the centrifugal fan intake is pressurized by the fan and sent into the exhaust chamber, which has a positive pressure relative to the atmospheric environment. Under the positive pressure of the exhaust chamber, it is injected into the atmospheric environment at high speed (around 8 m / s) from the small rectangular outlet on the outer surface of the exhaust chamber for diffusion and dilution. In this embodiment, the heat exchange airflow from the main unit intake to the exhaust port, powered by the centrifugal fan, undergoes two static-dynamic pressure conversions to achieve high-speed intake by the centrifugal fan and high-speed exhaust from the exhaust chamber.

[0149] In this embodiment, the microscopic process of airflow entering and exiting the fin gaps and flowing at low speed within the fin gaps during the operation of the air conditioning unit is a crucial aspect of the external heat exchanger's airflow field.

[0150] At the airflow inlet section EE, the medium-speed airflow of about 4 m / s, flowing in from the outer facade of the equipment platform, is propelled in a uniform laminar flow to the fin gap inlet section FF. At FF, the airflow line at the inlet forms an obtuse angle with the fin behind the gap. The fin behind the gap acts as a "planer," "planing" a piece of airflow from the main airflow and inserting it into the fin gap. At FF, the main airflow "planed" out by the tip of the "fin planer" is intercepted and impacts the tip of the "planer" on the fin behind the gap at an obtuse angle. After being reflected by the fin in front of the gap, it diffuses and decelerates in the fin gap. The airflow of about 1.5 m / s, which has been decelerated by the collision and diffusion, is pulled by the negative pressure of the negative pressure chamber and overcomes the resistance of the fin gap channel to flow out of the fin channel. The low-speed airflow that reaches the fin gap outlet section GG is accelerated again to a medium-speed airflow of about 4 m / s under the negative pressure of the negative pressure chamber and converges and is discharged at the HH section.

[0151] In this embodiment, when the air conditioner unit is running, heat exchange occurs between the refrigerant inside the evaporator-condenser pipes and the airflow between the fins outside the pipes, thus achieving energy coupling.

[0152] In this embodiment, on the refrigerant side, the refrigerant is driven to circulate by a compressor, and the high-efficiency phase change heat of the refrigerant during the circulation process is used to couple the heat absorption of the evaporator in the low-temperature air environment and the heat release of the condenser in the high-temperature air environment.

[0153] In this embodiment, a compressor chamber 4 is provided on the side of the negative pressure chamber 22 and the exhaust chamber 3 of the external heat exchanger for housing circuit components including a compressor 41, a gas-liquid separator 42, a four-way valve 43, an expansion valve 45, an electrical box, and a power cable signal line electrical box.

[0154] The main unit of this embodiment includes a two-section finned tube heat exchanger assembly, a two-section external heat exchanger negative pressure chamber 2, a two-section fan wall, a two-section exhaust chamber 3, and two vertical strip-shaped small-area air outlets 31. The two small-area exhaust outlets are connected to the downward-facing exhaust section 33. All of them are separated by a middle partition 38 and are connected to form an independent air path. The air outlets of the two exhaust sections point directly to the gaps of the louvers on the outer facade of the equipment platform, thus constructing an airflow path structure for the external heat exchanger assembly with a short path, low resistance, large air volume, and high heat exchange intensity, respectively serving the external heat exchanger assembly of the air conditioning unit and the external heat exchanger assembly of the air source water heater.

[0155] This embodiment achieves a large-span structural innovation in the air inlet and exhaust airflow paths of the external heat exchanger.

[0156] In this embodiment, the refrigerant is driven by the compressor 41 on the refrigerant side in a closed-loop circulation, and the refrigerant undergoes high-efficiency phase change heat transfer during the circulation process, so as to achieve energy coupling of the heat exchange process between the two external heat exchangers and the airflow in the fin gap of the main equipment.

[0157] In this embodiment, the compressor 41, four-way valve, expansion valve, gas-liquid separator and other refrigeration circuit components, as well as power cables, signal lines and electrical boxes, are installed in the compressor cavity for two sets of refrigerant circulation systems for air conditioning and air source water heater.

[0158] In this embodiment, the main unit uses compressor 41 to drive a closed-loop circulation of refrigerant on the refrigerant side, and the refrigerant undergoes high-efficiency phase change heat transfer during the circulation process to achieve energy coupling of the heat exchange process between the two external heat exchanger assemblies and the airflow between the fins of the above-mentioned air conditioner water heater main unit.

[0159] These refrigerant circulation systems, along with components such as the external heat exchanger 2, refrigerant connecting pipes, and indoor unit heat exchangers, form air conditioning refrigeration loops and air source water heater refrigeration loops in the sequence of compressor 41-four-way valve-condenser-expansion valve-evaporator-four-way valve-gas-liquid separator-compressor 41. Compressor 41 serves as the power source for the refrigeration loop, establishing high and low pressure states for the refrigerant in the condenser and evaporator pipes, driving the refrigerant to circulate and undergo repeated phase changes within the refrigeration loop to achieve "heat transfer." Specifically, the air conditioning refrigeration system absorbs heat through the evaporation of liquid refrigerant within the evaporator pipes, and then absorbs the low-pressure flow between the fins through the large finned area of ​​the copper pipes. In an air-source heat pump water heater, heat is transferred from the low-temperature environment of the evaporator to the high-temperature environment of the condenser by the condensation of high-temperature, high-pressure refrigerant gas within the condenser pipes. The heat is then released through the large fins attached to the copper pipes, which absorb heat from the ambient air flowing between the fins. Similarly, in an air-source heat pump water heater, heat is transferred from the ambient air of the evaporator to the high-temperature environment of the condenser by the condensation of high-temperature, high-pressure refrigerant gas within the water tank.

[0160] In this embodiment, the main equipment can operate independently, meaning that the two refrigerant circulation systems can operate synchronously or asynchronously.

[0161] Example 2

[0162] like Figure 12-13 As shown, both this embodiment and Embodiment 1 employ a physical structure with the external heat exchanger positioned rear-mounted, the fan and exhaust chamber front-mounted, and the compressor chamber side-mounted. Both also feature a small, downward-sloping exhaust section in the center of the exhaust chamber panel, conforming to the louvers on the equipment platform's exterior, to constrain and guide the direction of the exhaust airflow. The difference between this embodiment and Embodiment 1 is that the exhaust outlet 31 of the exhaust chamber 3 is located in the center of the exhaust chamber panel 32. The outlet 31 is a horizontal, rectangular strip.

[0163] This embodiment has all the advantages of embodiment 1, and because the exhaust outlet of the swooping exhaust section only faces the narrow gap of a small number of louvered window slats, the exhaust airflow resistance is smaller; the horizontal strip-shaped rectangular exhaust outlet 31 is set in the horizontal middle of the exhaust cavity panel 32, which is higher and avoids possible spatial interference between the lower edge of the exhaust outlet 31 and the water baffle of the equipment platform.

[0164] Example 3

[0165] like Figure 14 As shown, both this embodiment and Embodiment 1 employ a physical structure with the external heat exchanger positioned at the rear, the fan and exhaust chamber at the front, and the compressor chamber on the side. The difference between this embodiment and Embodiment 1 is that the air outlet 31 of the exhaust chamber 3 is located at the lower part of the exhaust chamber panel 32. The air outlet 31 is either a vertical strip-shaped rectangle or a horizontal strip-shaped rectangle.

[0166] This embodiment has all the advantages of embodiment 1, and the air outlet 31 is located at the lower part of the exhaust cavity panel 32, that is, at a position close to or directly connected to the bottom plate of the exhaust cavity 3 (i.e., the bottom plate of the housing 1). The position of the air outlet 31 in this embodiment is conducive to the discharge of debris, water, etc. in the exhaust cavity, keeping the exhaust cavity clean.

[0167] Example 4

[0168] like Figure 15 As shown, the air conditioning unit in this embodiment is the same as that in embodiments 1-3, all of which adopt a physical structure with the external heat exchanger at the rear, the fan and exhaust cavity at the front, and the compressor cavity at the side.

[0169] The difference in this embodiment is that an intermediate heat exchanger 6 is provided in the compressor cavity 4 of the air conditioning unit, and the two heat exchange medium channels of the intermediate heat exchanger 5 are the refrigerant channel and the air conditioning water channel, respectively.

[0170] The refrigerant passage connects to the refrigerant circuit of the air conditioning unit; the air conditioning water passage connects to the indoor heat exchanger.

[0171] In this embodiment, the air conditioning unit produces chilled water (hot water) through the intermediate heat exchanger 6 and delivers it to the indoor unit for cooling and dehumidifying (heating) the indoor air. The intermediate heat exchanger 6 can be a plate heat exchanger, a shell-and-tube heat exchanger, a coaxial heat exchanger, or a combination thereof.

[0172] This embodiment has all the advantages of embodiments 1-3. Furthermore, by adding an intermediate heat exchanger 6 to the air conditioning unit to output air conditioning water to the indoor units inside the building, the refrigerant is isolated on the external corridor-type equipment platform, eliminating the risk of refrigerant leakage and accumulation inside the building. This creates conditions for the air conditioning unit to use environmentally friendly refrigerants such as R290, which have zero greenhouse effect and zero ozone layer depletion effect but are flammable.

[0173] Example 5

[0174] like Figure 18-19 As shown, this embodiment has the same principle and structure as Embodiment 1, with the air inlet, finned tube heat exchanger assembly, negative pressure chamber, fan wall, and exhaust chamber arranged in a progressive manner, and the compressor chamber placed on the side.

[0175] The difference in this embodiment is that the external heat exchanger 2 is a sawtooth-shaped zigzag finned tube heat exchanger assembly composed of three flat finned tube heat exchangers 37 and a baffle 39; two of the flat finned tube heat exchangers 37 form a V-shaped finned tube heat exchanger 40, which can be formed by connecting the end plates of two flat finned tube heat exchangers to form a V-shaped finned tube heat exchanger, or by bending several single-row flat finned tube heat exchangers into a V-shape and then assembling them into a composite V-shaped finned tube heat exchanger; another flat finned tube heat exchanger 37 is independently set outside the V-shaped finned tube heat exchanger, and a baffle 39 is set between it and the V-shaped finned tube heat exchanger. The space between the baffle 39 and the finned tube heat exchanger is the exhaust chamber of the finned tube heat exchanger, which is connected to the negative pressure chamber of the external heat exchanger.

[0176] The serrated zigzag finned tube heat exchanger assembly has a serrated shape on the cross-section perpendicular to the long side of the fins.

[0177] The copper tubes of the serrated zigzag-shaped finned tube heat exchanger assembly are parallel to the serrated edges; the finned plate assemblies of the finned tube heat exchanger are orthogonally fitted onto the copper tubes.

[0178] The serrated zigzag finned tube heat exchanger assembly, together with the upper and lower base plates and the left and right side plates, forms the negative pressure chamber of the external heat exchanger.

[0179] The finned copper tubes are parallel or nearly parallel to the upper and lower base plates, and obliquely intersecting with the left and right side plates.

[0180] The serrated zigzag finned tube heat exchanger assembly divides the heat exchange air duct into a front chamber and a rear chamber. The front chamber is the air inlet chamber, and the rear chamber is connected to the air intake of the ventilation unit and is the negative pressure chamber 22 of the external heat exchanger.

[0181] The finned copper tubes form an obtuse angle with the side wall of the negative pressure chamber of the adjacent external heat exchanger.

[0182] This embodiment uses a three-finned tube heat exchanger assembly with a V+1 structure, which increases the heat exchange area compared to a single V-shaped finned tube heat exchanger, thus meeting the needs of air conditioning systems with larger cooling capacity.

[0183] Example 6

[0184] like Figure 16-17 As shown, a host equipment platform is provided, with the host equipment located inside the outer corridor-type equipment platform, and the air outlet 31 of the exhaust chamber 3 facing the outer facade of the outer corridor-type equipment platform 5.

[0185] The air conditioning unit in this embodiment is similar to that in Embodiment 1, both employing a physical structure with the external heat exchanger positioned at the rear, the fan and exhaust chamber at the front, and the compressor chamber on the side. The difference between the air conditioning unit in this embodiment and that in Embodiment 4 is that…

[0186] The air outlet 31 is provided with a vertically shaped rectangular outwardly convex exhaust section 35 that matches its shape; several guide plates 34 are provided inside the outwardly convex exhaust section 35.

[0187] The exterior louvers of the external corridor-type equipment platform 5 are equipped with opening structures 36 that match the protruding exhaust section 35 located in the middle or lower part of the exhaust cavity 3. The protruding exhaust section 35 in the middle or lower part of the exhaust cavity 3 is embedded in the opening structure 36 of the louver 52. When the air conditioning unit is running, the exhaust air from the air outlet 31 passes through the opening structure of the louver 52 and is directly discharged into the ambient atmosphere.

[0188] This embodiment has all the advantages of embodiment 4. Furthermore, since the frame and guide plate 34 of the protruding exhaust section 35 of the opening structure 36 embedded in the louver 52 are no longer hidden behind the louver 52, but face the external environment directly, becoming part of the visible exterior of the equipment platform, and the frame and guide plate 34 of the protruding exhaust section 35 are also decorative, the louver on the exterior of the equipment platform is given more structural and color variations, achieving a better decorative visual effect. The protruding exhaust section 35 embedded in the louver and the opening structure 36 of the louver do not need to be rigidly connected, so that the protruding exhaust section 35 is suspended in the opening structure 36 of the louver or is flexibly connected to the opening structure of the louver, so as to avoid the transmission and amplification of the noise of the air conditioning unit.

[0189] Example 7

[0190] like Figure 20-22 As shown, in this embodiment, the main unit of the air conditioner and water heater is a combination of a front fan wall side exhaust airflow and a side drift airflow. Its compressor cavity is located outside the negative pressure cavity of the external heat exchanger, that is, the compressor cavity is side-mounted. Its vertical strip-shaped air outlet 31 is connected to the side exhaust section 35. The side exhaust section 35 has a side guide plate group. The guide plate 34 is vertically set and has an angle to guide the exhaust airflow away from the air conditioner main unit, that is, the guide plate group points at a small angle to the end away from the compressor cavity.

[0191] In this embodiment, the main unit equipment platform integrating the air conditioner and water heater with the side exhaust airflow of the front fan wall is provided with louvers 52 on the exterior facade. The louvers 52 have a vertical strip opening structure reserved close to the side wall to freely accommodate the side exhaust section of the air conditioner main unit. When installing the main unit equipment, its side exhaust section is embedded into the vertical strip opening structure 36 reserved in the louvers.

[0192] In this embodiment, when the main unit of the air conditioning and water heater is operating, the positive pressure exhaust chamber of the main unit discharges the heat-exchanged air at high speed into the side exhaust section. Under the constraint and guidance of the guide plate group in the side exhaust section, the exhaust airflow drifts laterally when viewed horizontally. The exhaust airflow leaves the space directly in front of the equipment platform, preventing the exhaust airflow from flowing back into the main unit and also preventing the exhaust airflow from being sucked into the adjacent equipment platform below (in winter) or above (in summer) after being discharged from the main unit. When viewed vertically, the exhaust airflow of the main unit of the equipment platform on several floors of the building drifts laterally at a small angle in the horizontal plane, and then gathers vertically in the space behind the compressor cavity. In summer, the hot airflow moves upward, and in winter, the cold airflow moves downward, leaving the vertical space of the equipment platform and diffusing and diluting away from the equipment platform.

[0193] In traditional high-rise buildings, especially high-rise residential buildings, during winter (summer) seasons, when the external heat exchanger is ventilating to the ambient atmosphere, the equipment platform's exterior facade experiences a phenomenon where small exhaust areas with positive pressure and high-speed exhaust, while large intake areas with slight negative pressure and low-speed intake of ambient air, lead to the diffusion and dilution of exhaust air in the atmosphere, with some of the diluted exhaust air flowing back to the exterior facade. This causes cold (hot) air to adhere to the equipment platform's exterior facade, resulting in performance degradation of the main equipment.

[0194] In winter, the cold air discharged from the heat exchangers on each equipment platform diffuses and dilutes in front of its facade and partially flows back. From a vertical perspective, the cold air discharged from multiple equipment platforms moves downward as a whole and converges, linking end to end, forming a chain, and the more it is chained, the more it covers the facade of the equipment platform. This causes the main equipment of the lower equipment platform to draw in the cold air discharged from the main equipment of the upper equipment platform, which reduces the evaporation temperature, reduces the refrigerant circulation, and deteriorates the heating performance of the main equipment.

[0195] In summer, the hot air discharged from the heat exchangers on each equipment platform diffuses and dilutes in front of its facade and partially flows back. From a vertical perspective, the hot air discharged from multiple equipment platforms moves upward and converges as a whole, linking end to end, forming a chain, and the more it is chained, the more it covers the facade of the equipment platform. This causes the main equipment of the upper equipment platform to draw in the hot air discharged from the main equipment of the lower equipment platform, raising the condensing temperature, reducing the subcooling of the condensate, and deteriorating the cooling performance of the main equipment.

[0196] In this embodiment, after heat exchange, the air from each layer of the main equipment is constrained and guided by the guide plate group in the lateral exhaust section, and then drifts laterally at high speed to the outer space behind the compressor cavity. The exhaust airflow is separated from the space directly in front of the equipment platform, preventing the exhaust airflow from flowing back to the equipment platform. At the same time, it also prevents the risk of the exhaust airflow being sucked into the adjacent equipment platform below (in winter) or the adjacent equipment platform above (in summer) after being discharged from the equipment platform.

[0197] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A main unit integrating a dual-duct air conditioner and an air source water heater, characterized in that, It includes a housing, two sets of refrigerant circulation systems disposed within the housing, and an exhaust chamber; the refrigerant circulation system includes an external heat exchanger and a compressor; Each refrigerant circulation system has an independent external heat exchanger negative pressure chamber, which consists of an external heat exchanger, upper and lower base plates, left and right side plates, and a back plate. The back plate is provided with several exhaust vents for the external heat exchanger negative pressure chamber, and each exhaust vent is equipped with a fan. The exhaust outlet of the exhaust chamber is located on the exhaust chamber panel opposite the fan. The air inlet of the main unit, the external heat exchanger, the external heat exchanger negative pressure chamber, the fan, the exhaust chamber, and the exhaust outlet constitute a progressive air inlet and outlet layout with the external heat exchanger at the rear and the fan and exhaust chamber at the front. The back panel is provided with at least two exhaust vents; each exhaust vent is equipped with a fan, forming a fan wall; the fan is a centrifugal fan or an axial fan; The air outlet area of ​​the exhaust chamber is 15-60% of the air inlet area of ​​the negative pressure chamber of the external heat exchanger. The external heat exchanger is a horizontal cross-section V-shaped finned tube heat exchanger assembly or a serrated zigzag finned tube heat exchanger assembly. The horizontal cross-section V-shaped finned tube heat exchanger assembly consists of at least two flat plate finned tube heat exchangers; or it is composed of a V-shaped finned tube heat exchanger formed by bending flat plate finned tube heat exchangers; or it is composed of a flat plate finned tube heat exchanger and the V-shaped finned tube heat exchanger formed by bending flat plate finned tube heat exchangers; the cross-section of the horizontal cross-section V-shaped finned tube heat exchanger assembly perpendicular to the long side of the fins is a broken line type. The sawtooth-shaped zigzag finned tube heat exchanger assembly is composed of a flat plate finned tube heat exchanger, a V-shaped finned tube heat exchanger, and a baffle plate; the sawtooth-shaped zigzag finned tube heat exchanger assembly is sawtooth-shaped on the cross section perpendicular to the long side of the fin. The side of the cross section of the external heat exchanger perpendicular to the long side of the fins is the air inlet side of the heat exchanger, and the other side is the air outlet side of the heat exchanger; the air outlet side belongs to the negative pressure chamber area of ​​the external heat exchanger. The incident surface of the airflow is each finned tube heat exchanger in the external heat exchanger. The angle between the airflow and the tip of each finned tube heat exchanger is an obtuse angle. The airflow impacts the tip of each finned tube heat exchanger at an obtuse angle β and is reflected by the fin tip into the fin gap and flows into the negative pressure chamber of the external heat exchanger. The obtuse angle β is 97.5° to 145°; The airflow rate entering each fin gap d is equal to the airflow intercepted by the vertical distance δ between the tips of the front and rear fin plates of the finned tube heat exchanger in the external heat exchanger on the air inlet section. δ=d·sinα / 2, where α is the apex angle of the V-shaped finned tube heat exchanger.

2. The main unit integrating a dual-duct air conditioner and an air source water heater as described in claim 1, characterized in that, The two external heat exchanger negative pressure chambers are arranged vertically or horizontally side by side.

3. The main unit integrating a dual-duct air conditioner and an air source water heater as described in claim 1, characterized in that, The centrifugal fan is a backward-inclined external rotor centrifugal fan.

4. The main unit integrating a dual-duct air conditioner and an air source water heater as described in claim 1, characterized in that, The air outlet of the exhaust chamber is located in the middle or lower part of the exhaust chamber panel.

5. The main unit integrating a dual-duct air conditioner and an air source water heater according to claim 4, characterized in that, The air outlet includes a horizontal or vertical strip-shaped air outlet, which is located in the middle or lower part of the exhaust cavity panel.

6. The main unit integrating a dual-duct air conditioner and an air source water heater according to claim 1, characterized in that, An exhaust section is provided at the air outlet.

7. The main unit integrating a dual-duct air conditioner and an air source water heater according to claim 6, characterized in that, The exhaust section is equipped with several guide vanes; the guide vanes are arranged parallel to the louvers, or the guide vanes are arranged vertically and are provided with an angle to guide the exhaust airflow away from the air conditioning unit.

8. The main unit integrating a dual-duct air conditioner and an air source water heater according to claim 1, characterized in that, The side of the negative pressure chamber and exhaust chamber of the external heat exchanger is provided with a compressor chamber for housing the fluorine circuit assembly, including the compressor, gas-liquid separator, four-way valve, expansion valve and electrical box.

9. The main unit integrating a dual-duct air conditioner and an air source water heater according to claim 1, characterized in that, The main unit is also equipped with an intermediate heat exchanger, the two heat exchange medium channels of which are the refrigerant channel of the air conditioning unit and the air conditioning water channel, respectively; the refrigerant channel is connected to the refrigerant circuit of the air conditioning unit; and the air conditioning water channel is connected to the indoor heat exchanger of the air conditioning unit.

10. A host device platform, characterized in that, The main unit of any one of claims 1 to 9 is disposed within the outer corridor-type equipment platform, and the air outlet of the exhaust chamber faces the outer facade of the outer corridor-type equipment platform.

11. The host device platform according to claim 10, characterized in that, An exhaust section is provided at the air outlet; the exhaust section is located adjacent to the louvers on the exterior facade of the outer corridor-type equipment platform.

12. The host device platform according to claim 10, characterized in that, An exhaust section is provided at the air outlet; the louvers on the exterior facade of the outer corridor-type equipment platform are provided with an opening structure that matches the exhaust section located in the middle or lower part of the exhaust cavity; the exhaust section in the middle or lower part of the exhaust cavity is embedded in the opening structure of the louvers.

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