Air conditioner and water heater integrated host with single channel air path and equipment platform thereof

Abstract

This invention belongs to the field of architectural design technology and discloses a single-channel air conditioning and water heater integrated unit, including a shell, at least two sets of refrigerant circulation systems, and an exhaust chamber. The refrigerant circulation systems share an external heat exchanger and an external heat exchanger negative pressure chamber. The external heat exchanger negative pressure chamber is composed of an external heat exchanger, part of the shell, and a back plate. Several exhaust ports for the external heat exchanger negative pressure chamber are provided on the back plate, and each exhaust port is equipped with a fan. The exhaust port of the exhaust chamber is located on the exhaust chamber panel opposite the fan. The air inlet, external heat exchanger, external heat exchanger negative pressure chamber, fan, exhaust chamber, and exhaust port of the air conditioning and water heater integrated unit 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. This invention constructs a low-resistance external heat exchanger air path that penetrates the louvers of the exterior facade; constructs an external heat exchanger assembly structure to improve the energy density of the unit; reduces the number of devices, simplifies the spatial structure, and reduces the floor space.

Description

Technical Field

[0001] This invention belongs to the field of architectural design technology, and in particular relates to a single-channel air conditioning and water heater integrated host and its equipment platform. 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 the diagram, in current fully-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 now become standard configurations in the equipment platforms of fully furnished apartments; however, the classic residential central air conditioning units and air source water heaters, which are still in their early stages, 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] In a confined space on the equipment platform, configuring two physically independent systems with the same principle and similar structure—an air conditioning and water heater fusion unit and a heat pump water heater—is a duplication of refrigeration equipment resources and a waste of those 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 single-channel air conditioning and water heater integrated unit;

[0015] Another objective of this invention is to provide a device platform for a combined air conditioning and water heater host equipped with a single-channel airflow path.

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

[0017] A single-channel air conditioning and water heater integrated unit includes a housing, at least two refrigerant circulation systems disposed within the housing, and an exhaust chamber; the refrigerant circulation system includes an external heat exchanger and a compressor; the refrigerant circulation system shares a common external heat exchanger and an external heat exchanger negative pressure chamber;

[0018] The negative pressure chamber of the external heat exchanger consists of an external heat exchanger, a portion of the shell, and a back plate. Several exhaust vents for the negative pressure chamber of the external heat exchanger are provided on the back plate. Each exhaust vent is equipped with a fan, and the air outlet of the exhaust chamber is located on the exhaust chamber panel opposite the fan. The air conditioning water heater integrates 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, forming a progressive air inlet and outlet path with the external heat exchanger at the rear and the fan and exhaust chamber at the front.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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°.

[0023] Preferably, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 90°.

[0024] Preferably, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 60°.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] δ=d·sinα / 2, where α is the apex angle of the V-shaped finned tube heat exchanger;

[0029] 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.

[0030] 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.

[0031] Furthermore, the flat-plate finned tube heat exchanger includes finned plates and heat exchange tubes; several finned plates that are parallel to each other and spaced at a certain distance form a fin group; heat exchange tubes are inserted in a direction perpendicular to the finned plates; at least two groups of heat exchange tubes inserted in the finned plates are arranged in parallel side by side along the short side of the finned plates; the heat exchange tubes in the heat exchange tube groups are arranged in the long side of the finned plates; the parallel heat exchange tube groups are connected to compressors of different refrigerant circulation systems; fin thermal bridges are formed between the fins of each heat exchange tube group in the horizontal and vertical directions.

[0032] Furthermore, the heat exchanger tubes in the same row are connected in parallel to the refrigerant piping of the same refrigeration system.

[0033] Furthermore, of the at least two heat exchange tube assemblies installed in the finned plate, at least one heat exchange tube assembly is an air source water heater heat exchange tube assembly.

[0034] Furthermore, the finned plate includes at least two sets of heat exchange tubes for the air conditioning system, with the air source water heater heat exchange tubes located between adjacent heat exchange tubes for the air conditioning system.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Preferably, the finned copper tube forms an obtuse angle with the sidewall of the negative pressure chamber of the adjacent external heat exchanger.

[0041] 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-inclined external rotor centrifugal fan.

[0042] Preferably, the back panel is provided with 2, 4 or 6 exhaust vents; each exhaust vent is equipped with a fan, forming a fan wall.

[0043] 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.

[0044] 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.

[0045] Furthermore, an exhaust section is provided at the air outlet.

[0046] 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.

[0047] Furthermore, a swooping exhaust section is provided at the air outlet; the swooping exhaust section is provided with several guide vanes.

[0048] Furthermore, a protruding exhaust section is provided at the air outlet; several guide plates are provided inside the protruding exhaust section.

[0049] 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.

[0050] 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.

[0051] An equipment platform, wherein the air conditioning and water heater integrated host is installed inside the outer corridor-type equipment platform, and the air outlet of the exhaust cavity faces the outer facade of the outer corridor-type equipment platform.

[0052] 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.

[0053] 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.

[0054] Furthermore, an 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 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.

[0055] 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.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] ① Construct a low-resistance airflow path for the external heat exchanger that penetrates the louvers of the facade.

[0058] 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.

[0059] 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 air conditioning and water heater fusion 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 to overcome the short circuit of exhaust airflow backflow. The thermal performance of the air conditioning and water heater fusion 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.

[0060] ② Construct an external heat exchanger assembly structure to improve the body's energy density.

[0061] This invention utilizes a chain process in the external heat exchanger's airflow path: medium-speed air intake → finned blades disperse and decelerate → heat exchange on a massive finned heat exchange area on a large ventilation surface → convergence and acceleration → fan pressurization → high-speed discharge in a plunging exhaust section. With a fan as the power source and a massive, continuously arranged horizontal cross-section V-shaped finned tube heat exchanger assembly finned blades as the core, it achieves deceleration and smooth air distribution between the fins, constructing a highly efficient heat exchange airflow structure inside the air conditioner and water heater fusion unit, thereby improving the energy density of the external heat exchanger assembly and the air conditioner / water heater fusion unit.

[0062] 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.

[0063] 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 integrated air conditioning and water heater unit.

[0064] ③Reduce the number of equipment, simplify the spatial structure, and reduce the floor space required.

[0065] This invention integrates 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 and water heater integrated 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 air conditioner unit installation and also reducing the amplification and diffusion of air conditioner unit vibration and noise in the louvers through hard connections.

[0066] 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.

[0067] 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.

[0068] ④ Achieving a perfect balance between the decorative appeal of the exterior facade and the excellent thermal performance of the air conditioning unit.

[0069] Because of the modernization and fashion of architecture, the pursuit of visual effects for building facades by architects and owners, the whole society's love for "architecture as frozen music," and the function of louvers in shielding against wind and rain and preventing wind, frost, snow and ice from corroding the equipment platform and air conditioning water heater 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" airflow path of the air conditioning unit's external heat exchanger being obstructed and suppressed by louvers, resulting in increased exhaust static pressure, reduced airflow, and serious degradation of the heat exchange performance of the external heat exchanger are unavoidable.

[0070] The exhaust vent of the air conditioning and water heater fusion unit of this invention is vertically centered on the outer surface of the air conditioning and water heater fusion unit body and centered in the lower middle part of the outer facade of the equipment platform. When the air conditioning and water heater fusion unit on the equipment platform is running, the louvers on the outer facade corresponding to the two sides and the upper part of the air conditioning and water heater fusion unit form the air intake area, and the louvers corresponding to the small central vertical strip exhaust vent area on the exhaust cavity panel of the air conditioning and water heater fusion unit form the exhaust area. The air intake area and the exhaust area are separated from each other, blocking the exhaust backflow short circuit.

[0071] The exhaust cavity of this invention features a downward-facing air outlet that fits into 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 outlet 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 integrated air conditioning and water heater on the equipment platform is not reduced compared to laboratory data, thus fulfilling its role as a "heat transporter" with high quality and efficiency.

[0072] 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 air conditioning and water heater fusion unit. At the same time, it maintains the decorative appearance of the louver facade, achieving 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 air conditioning and water heater fusion unit.

[0073] ⑤ Improve the independent operation efficiency ratio by utilizing longitudinal and transverse thermal bridges in the fins.

[0074] This invention uses a horizontal cross-section V-shaped finned tube heat exchanger as the basic unit of the external heat exchanger assembly of the air conditioning unit. The two flat plate finned tube heat exchangers that constitute the horizontal cross-section V-shaped finned tube heat exchanger include multiple refrigerant branches of multiple refrigerant circulation systems of the air conditioning air source water heater. Multiple refrigerant branches share a set of fin groups. A set of fin groups includes several parallel fins.

[0075] The present invention relates to an external heat exchanger of an air conditioner or air source water heater refrigeration system in operation. Through the lateral thermal bridge effect of the fins, it can utilize the fin heat exchange area of ​​the external heat exchanger of the air source water heater or air conditioner refrigeration system in a non-operational state, thereby enlarging the fin heat exchange area of ​​the heat exchanger in the operating system. This achieves the technical effects of increasing evaporation pressure, reducing condensation pressure, reducing compressor exhaust temperature, increasing cooling and heating power, and improving energy efficiency ratio. Attached Figure Description

[0076] Figure 1 This is a schematic diagram of an existing air source heat pump water heater unit and water tank;

[0077] 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.

[0078] Figure 3 This is a three-dimensional sectional view of the single-channel air conditioning and water heater integrated unit of Example 1;

[0079] Figure 4This is a front view of the air conditioning and water heater integrated unit with a single-channel airflow in Example 1;

[0080] Figure 5 This is a top view of the air conditioning and water heater integrated unit with a single-channel airflow path according to Example 1;

[0081] Figure 6 This is a three-dimensional structural diagram of a horizontal cross-section V-shaped finned tube heat exchanger assembly.

[0082] 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.

[0083] Figure 8 This is a top view of the airflow operation of the single-channel air conditioning water heater fusion unit in Example 1;

[0084] Figure 9 This is a longitudinal vertical cross-sectional view of the airflow of the air conditioning water heater fusion unit in a single-channel airflow path according to Example 1.

[0085] Figure 10 This is a schematic diagram of the single-channel air conditioning and water heater integrated host system of Example 1;

[0086] Figure 11 This is an airflow distribution diagram of the single-channel air conditioning and water heater integrated unit in Example 1 running on the outer facade of the equipment platform;

[0087] Figure 12 This is a schematic diagram of the finned transverse and longitudinal thermal bridges of the multi-branch dual-system flat finned tube heat exchanger in Example 1. The left and right sides are two branches of two refrigeration systems.

[0088] Figure 13 This is a schematic diagram of the flat plate finned tube heat exchanger structure for each of the three branches of the dual refrigeration system in Example 1.

[0089] Figure 14 This is a schematic diagram of the transverse and longitudinal thermal bridges in the fins of the multi-branch dual-system flat finned tube heat exchanger in Example 2.

[0090] Figure 15 This is a front view of the air conditioning and water heater integrated unit with a single-channel airflow in Example 3;

[0091] Figure 16 This is a longitudinal vertical sectional view of the single-channel air conditioning water heater integrated unit of Example 3;

[0092] Figure 17 This is a vertical sectional view of the air conditioning unit in Example 4, where the air outlet is located at the lower part of the exhaust cavity panel.

[0093] Figure 18 This is a schematic diagram of an air conditioning system with an intermediate heat exchanger for producing air conditioning water input to the indoor unit, as shown in Example 5.

[0094] Figure 19 This is a front view of the air conditioning unit with a horizontally convex exhaust section, as shown in Example 7.

[0095] Figure 20 This is a vertical sectional view of the horizontal strip-shaped outwardly protruding exhaust section of the air conditioning unit embedded in the louver opening structure of the equipment platform in Example 7.

[0096] Figure 21 This is a top view of the integrated main unit structure of the fan wall front air conditioning water heater of the sawtooth zigzag finned tube heat exchanger assembly in Example 6.

[0097] Figure 22 This is a top view of the airflow during operation of the fan wall front-mounted air conditioning water heater integrated host of the sawtooth zigzag finned tube heat exchanger assembly in Example 6.

[0098] Figure 23 Top view of the integrated air conditioning and water heater structure with rear-mounted finned tube heat exchanger assembly, front fan wall exhaust cavity, and lateral airflow drift.

[0099] Figure 24 A top view of the airflow operation of the combined air conditioning and water heater unit, showing the side exhaust airflow from the front fan wall.

[0100] Figure 25 A schematic diagram showing the distribution of the air inlet and exhaust surfaces on the exterior of the equipment platform of the integrated air conditioning and water heater unit during summer operation, with the airflow from the side exhaust fan wall being laterally diffused.

[0101] Figure 26 A schematic diagram showing the vertical airflow of the building converging and moving upwards during summer operation when the lateral exhaust air conditioning water heater is installed on the equipment platform. Detailed Implementation

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] Example 1

[0107] like Figures 3-5 As shown, a single-channel air conditioning water heater integrated unit includes a housing 1, two sets of refrigerant circulation systems disposed within the housing, and an exhaust chamber 3.

[0108] The refrigerant circulation system includes an external heat exchanger 2 and a compressor 4; the refrigerant circulation system shares an external heat exchanger 2 and an external heat exchanger negative pressure chamber 22;

[0109] The negative pressure chamber 22 of the external heat exchanger is composed of an external heat exchanger 2, a part of the shell and a back plate 21;

[0110] The back plate 21 is provided with four exhaust ports 23 of the negative pressure chambers 22 of the external heat exchangers. Each exhaust port 23 is equipped with a fan 24, forming a fan wall.

[0111] The air outlet 31 of the exhaust chamber 3 is located on the exhaust chamber panel 32 opposite to the fan 24;

[0112] The air conditioning water heater integrates 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, forming a progressive air inlet and outlet path with the external heat exchanger at the rear and the fan and exhaust chamber at the front.

[0113] The fan 24 is located inside the exhaust chamber 3. The fan 24 is a backward-inclined external rotor centrifugal fan.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] The air outlets 31 of the exhaust chamber are all set on the exhaust chamber panel 32, 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 are combined on the exhaust chamber panel 32, and then connected to the combined vertical strip diving exhaust section 33, which fits the louver structure of the equipment platform facade.

[0118] In this embodiment, the connection between the combined vertical strip air outlet 31 on the exhaust cavity panel 32 of the air conditioning water heater integrated host 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.

[0119] A swooping exhaust section 33 is provided at the air outlet 31; several guide vanes 34 are provided 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.

[0120] 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.

[0121] In this embodiment, the small-area, downward-sloping exhaust section 33 on the exhaust cavity panel 32, which fits the louvers on the outer facade of the equipment platform, is a vertical strip-shaped rectangular structure that is vertically extended and set in the middle of the exhaust cavity panel 32.

[0122] 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.

[0123] like Figure 12-13As shown, the 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 heat exchange tubes 115 are installed in a direction perpendicular to the plane of the finned plates 110.

[0124] Two sets of heat exchange tubes 116 are arranged in parallel side by side along the short side of the finned plate 110.

[0125] The heat exchange tubes 115 in the heat exchange tube assembly 116 are arranged along the long side of the finned plate 110.

[0126] like Figure 12 As shown, in this embodiment, six sets of heat exchange tubes 116 are arranged along the long side of the finned plate 110.

[0127] The heat exchange tube assemblies 116 are arranged side by side and connected to different compressors 4. That is, the two ends of the heat exchange tube assembly I 117 are respectively connected to the refrigerant liquid pipe 112 and the refrigerant gas pipe 113 of the air conditioning compressor I 121.

[0128] Heat exchanger tube assembly II118 is connected to the refrigerant liquid pipe 111 and refrigerant gas pipe 114 of the compressor II122 of the air source water heater.

[0129] like Figure 13 As shown, the heat exchange tube group 116 in the same row is connected in parallel to the refrigerant pipeline of the same compressor 4.

[0130] That is, heat exchanger tube group I 117 and heat exchanger tube group III 119 in the same row are connected to the refrigerant liquid pipe 112 and refrigerant gas pipe 113 of the air conditioning compressor I.

[0131] The heat exchanger tube group II 118 and heat exchanger tube group IV 120 in the same row are connected to the refrigerant liquid pipe 111 and refrigerant gas pipe 114 of the compressor II of the air source water heater.

[0132] In this embodiment, the heat exchange tube groups 116 are arranged side by side and connected to different compressors. The finned tube heat exchanger 37 in operation can utilize the fin heat exchange area of ​​the finned tube heat exchanger in the refrigeration system in the non-operational state through the lateral thermal bridge effect of the fins, thereby increasing the fin heat exchange area of ​​the heat exchanger in the operating system, achieving increased evaporation pressure, decreased condensation pressure, decreased compressor discharge temperature, increased refrigeration and heating power, and improved energy efficiency ratio.

[0133] like Figure 6-7 As 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] The apex angle α of the V-shaped finned tube heat exchanger is 15° to 110°.

[0138] As an optional implementation, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 90°.

[0139] As an optional implementation, the apex angle α of the V-shaped finned tube heat exchanger is 30° to 60°.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] δ=d·sinα / 2, where α is the apex angle of the V-shaped finned tube heat exchanger;

[0144] 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.

[0145] 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.

[0146] 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 air conditioner water heater integrated 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.

[0147] This embodiment presents a single-channel air conditioning and water heater integrated host, which creatively reconstructs the structure of the external heat exchanger, the external heat exchanger air path, and the air conditioning host structure of the household air conditioning host, creating conditions for the integration of the air conditioning host and the equipment platform.

[0148] ① Innovative structural design of air conditioning unit

[0149] Compared with classic household air conditioner units and air source water heater units, the single-channel air conditioning and water heater integrated unit of this embodiment is characterized by: adopting a V-shaped finned tube heat exchanger assembly with a horizontal cross-section and ultra-large heat exchange area; the refrigerant pipeline of the external heat exchanger corresponds to the two independent refrigeration systems of the air conditioner and the air source water heater, and the two refrigerant pipelines are thermally connected through the longitudinal and transverse thermal bridges of the flat finned tubes; the external heat exchanger is placed at the rear, the fan wall, the exhaust cavity and the exhaust port are placed at the front; a small area downward-facing exhaust port is set on the front exhaust cavity panel 32.

[0150] The horizontal cross-section V-shaped finned tube heat exchanger assembly in this embodiment is composed of at least two 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 a broken line type;

[0151] In this embodiment, within the limited space of the air conditioning and water heater integrated unit in a single-channel airflow path, a horizontal cross-section V-shaped finned tube heat exchanger assembly is set parallel to the air inlet 11. The assembly unfolds along the air inlet surface of the horizontal cross-section V-shaped finned tube heat exchanger assembly to obtain a large-area external heat exchanger ventilation 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 fins of the external heat exchangers of the air conditioning unit and the air source water heater unit, reducing the heat transfer temperature difference Δt of the external heat exchanger body, increasing the evaporation pressure and reducing the condensation pressure, and improving the cooling capacity Q and energy efficiency ratio COP of the air conditioning system and the air source water heater system.

[0152] The negative pressure chamber 22 of the external heat exchanger in this embodiment is composed of a bottom plate (i.e., the bottom plate of the shell 1), a side plate, a back plate, an external heat exchanger, and a top plate (i.e., the top plate of the shell 1).

[0153] The back plate 21 is horizontally positioned relative to the external heat exchanger 2. The back plate 21 has an exhaust port 23 for the negative pressure chamber 22 of the external heat exchanger, and the exhaust port 23 is fitted with an intake port for a backward-inclined external rotor centrifugal fan. The intake port of the backward-inclined external rotor centrifugal fan faces the external heat exchanger 2. The horizontally arranged heat exchanger is the air inlet 11 of the negative pressure chamber of the external heat exchanger. An exhaust chamber 3 for the centrifugal fan is located outside the back plate 21 of the negative pressure chamber 22. The exhaust port 31 of the exhaust chamber 3 is centrally located on the exhaust chamber panel 32. A downward-sloping exhaust section 33 connects to the outside of the exhaust port 31 on the exhaust chamber panel, fitting the louver structure of the equipment platform's exterior facade.

[0154] In this embodiment, a compressor chamber 4 is provided on the side of the external heat exchanger 2 and the exhaust chamber 3, housing two sets of refrigerant circulation system compressors 41, four-way valves, expansion valves and other refrigerant circuit components, as well as electrical components such as an electrical box for the air conditioning and water heater fusion unit.

[0155] In this embodiment, the connection between the exhaust port 31 on the exhaust cavity panel 32 and the swooping exhaust section that fits the louver structure of the equipment platform facade can be achieved by riveting or by flange connection.

[0156] ②Innovative airflow path structure for external heat exchanger inlet and outlet

[0157] In this embodiment, the external heat exchanger 2 has an air inlet 11, an external heat exchanger negative pressure chamber 22, a fan wall, an exhaust chamber 3, and a rectangular small-area air outlet 31 in the exhaust chamber, arranged in a progressive layout to construct an external heat exchanger air inlet and outlet path with short path, low resistance, large air volume, and high heat exchange intensity.

[0158] During ventilation and heat exchange in this embodiment, the external heat exchanger 2 operates from the air inlet 11 to the air outlet 31, powered by a centrifugal fan. The heat exchange airflow undergoes two static-dynamic pressure conversions. The first static-dynamic pressure conversion enables high-speed intake of airflow from the centrifugal fan's suction port, and the second static-dynamic pressure conversion enables high-speed exhaust of airflow from the exhaust port 31 of the exhaust chamber 3. Furthermore, the airflow lines between the fins of the finned tube 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 ventilation and heat exchange process of the external heat exchanger 2 in this embodiment.

[0159] In this embodiment, the airflow field of the external heat exchanger is established by the operation of four centrifugal fans on the fan wall: the four centrifugal fans on the vertically set centrifugal fan wall draw air from the negative pressure chamber 22 of the external heat exchanger to generate negative pressure inside the chamber. This draws ambient air at 0 Pa static pressure (gauge pressure) into the main unit at a medium speed (about 4 m / s) from the air inlet of the main unit. The airflow is dispersed and slowed down by planing the airflow through multiple fins. It flows through the gaps between the fins of the external heat exchanger at a low speed (below 2 m / s) to complete heat exchange. Then it enters the negative pressure chamber 22 of the external heat exchanger, and then converges and accelerates. The airflow flows at high speed into the centrifugal fan suction port with the lowest pressure (negative gauge pressure) in the entire path, completing the first static pressure to dynamic pressure conversion of the air. The high-speed heat exchange airflow flowing into the centrifugal fan's intake port is pressurized by the centrifugal fan and sent into the exhaust chamber 3, which is under positive pressure relative to the atmospheric environment. It then exits at high speed from the small-area outlet 31 of the exhaust chamber and enters the diving exhaust section 33. Under the constraint and guidance of multiple diving guide plates 34 installed in the diving exhaust section 33, the exhaust airflow is parallel or nearly parallel to the louvers on the outer facade of the equipment platform. The louver assembly minimizes the interception area and resistance of the exhaust airflow, allowing the low-resistance, high-speed exhaust airflow to pass through the louver assembly and exit at high speed (approximately 8 m / s) into the external atmosphere, achieving long-range diffusion and dilution. In this embodiment, the heat exchange airflow, from the main unit's inlet 11 to the outlet 31, is powered by the centrifugal fan and undergoes two static-dynamic pressure conversions, achieving high-speed intake by the centrifugal fan and high-speed exhaust from the exhaust chamber.

[0160] In this embodiment, when the air conditioner and water heater are running, the microscopic process of airflow entering and exiting the fin gap and flowing at low speed in the fin gap is the key link of the airflow field of the external heat exchanger 2.

[0161] 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 fins behind the gap. The fins behind the gap act as "planers," "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 fins behind the gap at an obtuse angle. After being reflected by the fins 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 of the external heat exchanger, overcomes the resistance of the fin gap channel, and flows 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 then converges and is discharged at the HH section.

[0162] This embodiment achieves a large-span structural innovation in the air intake and exhaust airflow paths of the external heat exchanger 2 of the integrated air conditioning water heater.

[0163] This embodiment describes a single-channel airflow system that integrates an air conditioning and water heater unit with a swooping exhaust section. On the refrigerant side, the compressor drives a closed-loop refrigerant circulation. During the refrigerant circulation process, high-efficiency phase change heat is achieved, which couples the heat absorption of the evaporator in the low-temperature air and the heat release of the condenser in the high-temperature air of the air conditioning refrigeration system, as well as the heat absorption of the evaporator in the low-temperature air and the heat release of the condenser in the high-temperature hot water of the water tank in the air source water heater heat pump system.

[0164] In this embodiment, a compressor chamber 4 is set outside the external heat exchanger 2 and the exhaust chamber 3, and refrigeration circuit components such as compressors 4 of two sets of refrigerant circulation systems, four-way valves, expansion valves, gas-liquid separators, power cables, signal lines, and electrical boxes are installed. These refrigeration circuit components, along with external heat exchangers, refrigerant connecting pipes, indoor unit heat exchangers, and other components, form the air conditioning refrigerant circulation circuit and the air source water heater refrigerant circulation circuit in the order of compressor-four-way valve-condenser-expansion valve-evaporator-four-way valve-gas-liquid separator-compressor. The compressor, as the power source of the refrigerant circulation circuit, establishes high and low pressure states of the refrigerant in the condenser and evaporator pipes, driving the refrigerant to circulate and undergo repeated phase changes in the refrigerant circulation circuit to achieve "heat transfer." That is, the air conditioning refrigeration system absorbs heat by evaporating liquid refrigerant in the evaporator pipes, and then absorbs heat from the low-temperature ambient air flowing between the fins through the large heat absorption area of ​​the copper pipes. Conversely, the high-temperature, high-pressure refrigerant gas releases heat by condensing in the condenser pipes, and then releases heat to the high-temperature ambient air flowing between the fins through the large heat release area of ​​the copper pipes. This achieves the migration of heat from the low-temperature environment where the air conditioner evaporator is located to the high-temperature environment where the condenser is located.

[0165] The air source heat pump water heater cooling system absorbs heat by evaporating liquid refrigerant in the evaporator pipes, and then absorbs heat from the ambient air flowing between the fins through the large heat absorption area of ​​the copper pipes. The heat is then released by condensing high-temperature, high-pressure refrigerant gas in the condenser 71 pipes in the water tank 7, thus realizing the transfer of heat from the ambient air where the water heater evaporator is located to the high-temperature hot water environment where the condenser is located.

[0166] In this embodiment, the airflow path is single-channel and the air-conditioning unit and air-source water heater unit included in the combined air-conditioning and water-conditioning unit adopt a downward-facing exhaust section. They can operate independently, that is, the two refrigeration systems can operate synchronously or asynchronously.

[0167] Example 2

[0168] Both this embodiment and Embodiment 1 adopt a physical structure with the external heat exchanger at the rear, the fan wall and exhaust cavity at the front, and the compressor cavity at the side. Both utilize longitudinal and transverse thermal bridges of the fins to increase the heat exchange area of ​​the external heat exchanger fins in a standalone refrigeration system. Both have a small-area, downward-sloping exhaust section that fits the louvers on the outer facade of the equipment platform in the center of the exhaust cavity panel to constrain and guide the direction of the exhaust airflow.

[0169] The difference in this embodiment is:

[0170] The finned tube heat exchanger used in this embodiment, such as Figure 14 As shown,

[0171] The 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 heat exchange tubes 115 are installed in a direction perpendicular to the plane of the finned plates 110.

[0172] Three sets of heat exchange tubes 116 are arranged in parallel along the short side of the finned plate 110, one of which is an air source water heater heat exchange tube set 128.

[0173] The heat exchange tubes 115 in the heat exchange tube assembly 116 are arranged along the long side of the finned plate 110.

[0174] The finned plate 110 includes four sets of heat exchange tube groups I 117, II 118, and IV 120 for air conditioning systems. The heat exchange tube group 128 of the air source water heater is located between adjacent heat exchange tube groups for air conditioning systems, and the fins between each heat exchange tube group form thermal bridges in the transverse and longitudinal directions.

[0175] The two ends of heat exchanger tube assembly I117 and heat exchanger tube assembly II118 are respectively connected to the refrigerant liquid pipe 112 and refrigerant gas pipe 113 of air conditioning compressor I121.

[0176] The heat exchange tube assembly 128 of the air source water heater is connected to the refrigerant liquid pipe and refrigerant gas pipe of the air source water heater compressor Ⅲ 129 respectively.

[0177] The heat exchange tube group 116 in the same row is connected in parallel to the refrigerant pipeline of the same air conditioning compressor.

[0178] Heat exchanger tube group I 117 and heat exchanger tube group III 119 in the same row are connected to the refrigerant liquid pipe 112 and refrigerant gas pipe 113 of the air conditioning compressor I.

[0179] Heat exchanger tube group II 118 and heat exchanger tube group IV 120 in the same row are connected to the refrigerant liquid pipe 112 and refrigerant gas pipe 113 of the air conditioning compressor I.

[0180] The horizontal cross-section V-shaped finned tube heat exchanger assembly is composed of four finned tube heat exchangers 37 of this embodiment.

[0181] The cross-section of the horizontal cross-section V-shaped finned tube heat exchanger assembly perpendicular to the fin 110 is a broken line type; the long side of the finned tube heat exchanger 37 is set in the vertical direction or close to the vertical direction.

[0182] In this embodiment, the cross-section of the horizontal cross-section V-shaped finned tube heat exchanger assembly perpendicular to the fin 110 is W-shaped, and it is composed of two V-shaped finned tube heat exchangers 40 arranged continuously.

[0183] The apex angle α of the V-shaped finned tube heat exchanger is 15° to 90°.

[0184] In this embodiment, the integrated structure of the air conditioner unit and air source water heater unit combined finned tube heat exchanger assembly adopts a combination of two horizontal V-shaped finned tube heat exchangers. Each V-shaped finned tube heat exchanger is composed of two flat plate finned tube heat exchangers. Each flat plate finned tube heat exchanger includes three rows of heat exchange tubes. The two rows of heat exchange tubes on the inner and outer sides belong to the external heat exchanger of the air conditioner unit, and the middle row of heat exchange tubes belongs to the external heat exchanger of the air source water heater unit. The fins are complete and continuous, and the lateral and longitudinal thermal bridges of the fins are complete and continuous.

[0185] This embodiment improves the cooling energy efficiency ratio (EER) of the air conditioning system when operating independently by utilizing the heat transfer area of ​​the fins near the middle heat exchanger tube group in the air source water heater, through the use of the inner and outer heat exchanger tube groups in the external heat exchanger of the air conditioning system. It also significantly improves the EER of the air source water heater system when operating independently, by utilizing the heat transfer area of ​​the fins near the inner and outer heat exchanger tube groups in the middle heat exchanger tube group of the air conditioning system. Although the power of an air source water heater is usually less than that of a residential central air conditioning unit, the demand for hot water for household bathing, cooking, and laundry is continuously increasing with the evolution of lifestyles and hygiene habits, even during spring and autumn when air conditioning is rarely used. Therefore, this embodiment's significant improvement in the EER of the air source water heater system is of great importance.

[0186] Example 3

[0187] like Figure 15-16 As shown, both this embodiment and Embodiment 1 adopt a physical structure with the external heat exchanger assembly at the rear, the centrifugal fan wall and exhaust cavity at the front, and the compressor cavity at the side. Both utilize longitudinal and transverse thermal bridges of the fins to increase the heat exchange area of ​​the external heat exchanger fins in a standalone refrigeration system. Both have a small-area, downward-sloping exhaust section that fits the louvers on the outer facade of the equipment platform in the center of the exhaust cavity panel to constrain and guide the direction of the exhaust airflow.

[0188] The difference between this embodiment and Embodiment 1 is that the air outlet 31 of the exhaust chamber 3 is located in the middle of the exhaust chamber panel 32. The air outlet 31 is a horizontal rectangular strip.

[0189] 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.

[0190] Example 4

[0191] like Figure 17 As shown, both this embodiment and Embodiment 1 adopt a physical structure with the external heat exchanger assembly at the rear, the centrifugal fan wall and exhaust cavity at the front, and the compressor cavity at the side. Both utilize longitudinal and transverse thermal bridges of the fins to increase the heat exchange area of ​​the external heat exchanger fins in a standalone refrigeration system. Both have a small-area, downward-sloping exhaust section that fits the louvers on the outer facade of the equipment platform in the center of the exhaust cavity panel to constrain and guide the direction of the exhaust airflow.

[0192] 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 rectangle or a horizontal strip rectangle.

[0193] 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.

[0194] Example 5

[0195] like Figure 18 As shown, both this embodiment and Embodiment 1 adopt a physical structure with the external heat exchanger assembly at the rear, the centrifugal fan wall and exhaust cavity at the front, and the compressor cavity at the side. Both utilize longitudinal and transverse thermal bridges of the fins to increase the heat exchange area of ​​the external heat exchanger fins in a standalone refrigeration system. Both have a small-area, downward-sloping exhaust section that fits the louvers on the outer facade of the equipment platform in the center of the exhaust cavity panel to constrain and guide the direction of the exhaust airflow.

[0196] 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.

[0197] The refrigerant passage connects to the refrigerant circuit of the air conditioning unit; the air conditioning water passage connects to the indoor heat exchanger 44.

[0198] 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.

[0199] This embodiment has all the advantages of embodiments 1-4. 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 blocked 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.

[0200] Example 6

[0201] like Figure 21-22 As shown, this embodiment has the same principle and structure as Embodiment 1. The air inlet, finned tube heat exchanger assembly, negative pressure chamber, fan wall, and exhaust chamber are arranged in a progressive manner, and the compressor chamber is placed on the side.

[0202] 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.

[0203] The serrated zigzag finned tube heat exchanger assembly has a serrated shape on the cross-section perpendicular to the long side of the fins.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] The finned copper tubes form an obtuse angle with the side wall of the negative pressure chamber of the adjacent external heat exchanger.

[0209] 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.

[0210] Example 7

[0211] like Figures 19-20 As shown, an equipment platform is provided, in which the air conditioning and water heater integrated host is set inside the outer corridor-type equipment platform, and the air outlet 31 of the exhaust chamber 3 faces the outer facade of the outer corridor-type equipment platform.

[0212] The air conditioning unit in this embodiment is similar to that in embodiment 3, 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 3 is:

[0213] 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.

[0214] The exterior louvers of the external corridor-type equipment platform 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 louvers. When the air conditioning unit is running, the exhaust air from the air outlet 31 passes through the opening structure of the louvers and is directly discharged into the ambient atmosphere.

[0215] This embodiment has all the advantages of embodiment 3. Furthermore, since the frame and guide plate 34 of the protruding exhaust section 35 of the louvered opening structure 36 are no longer hidden behind the louver, 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 louvered opening structure 36 do not need to be rigidly connected, so that the protruding exhaust section 35 is suspended in the louvered opening structure 36 or flexibly connected to the louvered opening structure, so as to avoid the transmission and amplification of the noise of the air conditioning unit.

[0216] Example 8

[0217] like Figure 23-25 As shown, in this embodiment, the air conditioner and water heater are integrated units with a front fan wall side exhaust airflow side drift. The 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 unit, that is, the guide plate group points at a small angle to the end away from the compressor cavity.

[0218] In this embodiment, the equipment platform of the air conditioning and water heater integrated unit is provided with a front fan wall side exhaust airflow drifting sideways. The exterior facade is provided with louvers 52. The louvers 52 are reserved with a vertical strip opening structure close to the side wall to freely accommodate the side exhaust section of the air conditioning unit. When installing the unit, its side exhaust section is embedded into the reserved vertical strip opening structure of the louvers.

[0219] In this embodiment, when the combined air conditioning and water heater unit operates on the platform of the front fan wall, the airflow drifts laterally. The positive pressure exhaust chamber of the combined air conditioning and water heater unit discharges the heat-exchanged air at high speed into the lateral exhaust section. Under the constraint and guidance of the guide plate assembly in the lateral exhaust section, the exhaust airflow drifts laterally when viewed horizontally. This prevents the exhaust airflow from flowing back into the platform and also prevents it from being sucked into adjacent platforms below (in winter) or above (in summer) after being discharged from the platform. Vertically, the exhaust airflow from the combined air conditioning and water heater units on several floors of the building drifts laterally at a small angle in the horizontal plane, 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, detaching from the vertical space of the platform and diffusing away from it.

[0220] In traditional high-rise buildings, especially high-rise residential buildings, during winter (summer) operation of the external heat exchanger to ventilate 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 air conditioning and water heater's integrated unit.

[0221] 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 unit of the lower equipment platform to draw in the cold air discharged from the air conditioning and water heater of the upper equipment platform, which reduces the evaporation temperature, reduces the refrigerant circulation, and deteriorates the heating performance of the main unit.

[0222] 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 air conditioning and water heater fusion unit on the upper equipment platform to draw in the hot air discharged from the air conditioning and water heater fusion unit on the lower equipment platform, raising the condensing temperature, reducing the subcooling of the condensate, and deteriorating the cooling performance of the air conditioning and water heater fusion unit.

[0223] 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.

[0224] 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 single-channel air-conditioning water heater integrated unit, characterized in that, It includes a housing, at least 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; the refrigerant circulation system shares a common external heat exchanger and an external heat exchanger negative pressure chamber; 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 consists of a V-shaped finned tube heat exchanger formed by bending flat plate finned tube heat exchangers; or it consists 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 negative pressure chamber of the external heat exchanger is composed of a bottom plate, side plate, back plate, top plate and external heat exchanger. 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 has a sawtooth shape on the cross section perpendicular to the long side of the fins; the sawtooth-shaped zigzag finned tube heat exchanger assembly, together with the upper and lower bottom plates and the left and right side plates, forms the negative pressure chamber of the external heat exchanger. The external heat exchanger is the air inlet of the negative pressure chamber of the external heat exchanger; one side of the cross section of the finned tube heat exchanger assembly 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. The back panel is provided with several exhaust vents for the negative pressure chambers of the external heat exchanger. Each exhaust vent is equipped with a fan, and the air outlet of the exhaust chamber is located on the exhaust chamber panel opposite the fan. The air conditioning water heater integrates 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, forming 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 incident surface of the inlet airflow is each finned tube heat exchanger in the external heat exchanger, and the angle between the inlet airflow and the tip of each finned tube heat exchanger is an obtuse angle; the inlet 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°~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 fins 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 air conditioning and water heater integrated unit with a single-channel airflow path according to claim 1, characterized in that, The flat plate finned tube heat exchanger includes finned plates and heat exchange tubes; several parallel finned plates with a certain distance between them form a fin group. Heat exchange tubes are installed in a direction perpendicular to the finned plate; at least two sets of heat exchange tubes are installed in parallel along the short side of the finned plate; the heat exchange tubes in the heat exchange tube sets are arranged along the long side of the finned plate; the parallel heat exchange tube sets are connected to compressors of different refrigerant circulation systems; the fins between each heat exchange tube set form fin thermal bridges in the horizontal and vertical directions.

3. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 2, characterized in that, The heat exchanger tubes in the same row are connected in parallel to the refrigerant piping of the same refrigeration system.

4. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 2, characterized in that, At least two sets of heat exchange tubes are installed in the finned plate, and at least one set of heat exchange tubes is an air source water heater heat exchange tube set.

5. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 4, characterized in that, The finned plate includes at least two sets of heat exchange tubes for air conditioning systems, with the air source water heater heat exchange tubes located between adjacent sets of heat exchange tubes for air conditioning systems.

6. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 1, characterized in that, The back panel is provided with at least two exhaust vents; each exhaust vent is equipped with a fan, forming a fan wall.

7. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 6, characterized in that, The fan is a centrifugal fan.

8. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 7, characterized in that, The centrifugal fan is a backward-inclined external rotor centrifugal fan.

9. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 6, characterized in that, The fan is an axial flow fan.

10. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 1, characterized in that, The air outlet area of ​​the exhaust chamber is 15% to 60% of the air inlet area of ​​the negative pressure chamber of the external heat exchanger.

11. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 10, characterized in that, The air outlet of the exhaust chamber is located in the middle or lower part of the exhaust chamber panel.

12. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 11, 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.

13. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 10, characterized in that, An exhaust section is provided at the air outlet.

14. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 13, 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.

15. The air conditioning and water heater integrated unit with a single-channel airflow path 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.

16. The air conditioning and water heater integrated unit with a single-channel airflow path according to claim 1, characterized in that, The air conditioner-water heater integrated unit is also equipped with an intermediate heat exchanger. The two heat exchange medium channels of the intermediate heat exchanger are the refrigerant channel of the air conditioner unit and the air conditioner water channel, respectively. The refrigerant channel is connected to the refrigerant circuit of the air conditioner unit. The air conditioner water channel is connected to the indoor heat exchanger of the air conditioner.

17. A device platform, characterized in that, The air conditioning and water heater integrated unit according to any one of claims 1 to 16 is installed inside the outer corridor-type equipment platform, and the air outlet of the exhaust cavity faces the outer facade of the outer corridor-type equipment platform.

18. The device platform according to claim 17, 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.

19. The device platform according to claim 17, 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 louver opening structure.

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