Homogenization unidirectional exhaust cavity air static pressure air conditioner main unit and air conditioner water heater fusion main unit

Abstract

The application discloses a homogenization one-way exhaust cavity air static pressure air conditioner main machine and air conditioner water heater fusion main machine, a first preset interval is arranged between the opposite surface of the fan of the one-way exhaust cavity and the centrifugal fan, so that an exhaust channel of the homogenization one-way exhaust cavity air static pressure is formed between the two, the closed side static pressure is reduced, the total sectional area of the one-way exhaust cavity exhaust is enlarged, so that the homogenization of the air static pressure field of the open side (one side of the exhaust surface) and the closed side of the one-way exhaust cavity is promoted, the fan shaft power is reduced, and the fan shaft power is reduced.

Description

Technical Field

[0001] This invention belongs to the field of central air conditioning technology, and particularly relates to a uniform unidirectional exhaust cavity air static pressure air conditioning unit and an air conditioning water heater integrated unit. Background Technology

[0002] Air conditioning is the most important energy-consuming device in a building and a focal point of building energy conservation. The advent of air conditioning has fundamentally changed the secondary environment inside buildings, greatly expanded the space and time for human activities, and also fundamentally changed human lifestyles and quality of life; as the most technologically intensive product in the air conditioning industry, commercial air conditioning has made rapid progress in the past forty years.

[0003] Although commercial air conditioners have existed as "heat transporters" since their inception, fulfilling the function of transferring heat from low-temperature heat sources to high-temperature heat sources, and their reverse Carnot cycle architecture of evaporator heat absorption, adiabatic compression, condenser heat release, and throttling pressure reduction has remained unchanged, the main components that construct the basic refrigerant cycle, low-temperature heat source medium cycle, and high-temperature heat source medium cycle, including compressors, evaporators, condensers, throttling valves, fans, water pumps, sensors, controllers, etc., have undergone multiple upgrades and iterations. Furthermore, commercial air conditioners have made revolutionary progress in system optimization, high energy efficiency, and intelligent, networked, and scenario-based applications.

[0004] The external heat exchanger module of current commercial air conditioning units has evolved from "shell and tube heat exchanger + cooling tower" to air surface cooler. "Finned tube heat exchanger + top air outlet axial flow fan" has become the standard configuration of external heat exchanger module of commercial air conditioning units. Multi-split units and air-cooled water chiller modules with "finned tube heat exchanger + top air outlet axial flow fan" as the basic type have greatly improved the environmental adaptability and cooling energy efficiency of commercial air conditioning units.

[0005] See Figure 16 Current commercial air conditioning units all use a top-discharge design, which involves installing an external heat exchanger inside the casing and an upward-facing axial fan on the top surface of the casing. The axial fan creates negative pressure inside the casing, forcing ambient air to pass through the external heat exchanger via the air inlet on the casing, exchange heat, and then be discharged into the atmosphere above by the axial fan. Compressors and other equipment are located below the casing; if water is used as the refrigerant, a shell-and-tube heat exchanger is also required. This top-discharge axial fan design limits the installation of commercial air conditioning units to the rooftop of buildings, preventing their placement in equipment rooms. However, rooftop space is often insufficient to accommodate the required area for commercial air conditioning units in high-rise buildings.

[0006] See Figure 15Existing commercial air conditioning multi-split modules simply arrange the aforementioned commercial air conditioning units side by side and connect their external heat exchangers. They still use the axial flow fan on the commercial air conditioning unit to extract the gas inside the casing from the top air outlet.

[0007] Patent document CN107327961A, entitled "A Rooftop Air Conditioner," discloses a commercial air conditioning unit with a top-discharge design. This rooftop air conditioner features an indoor heat exchanger and an outdoor heat exchanger stacked vertically, allowing air to enter the outdoor heat exchanger almost entirely around its circumference. The rooftop air conditioner provided by this technical solution, with its indoor and outdoor heat exchangers stacked vertically and the outdoor heat exchanger positioned to allow air to enter almost entirely around its circumference, results in a large air intake area and a large heat exchange area. Under the same cooling / heating requirements, the size of the rooftop air conditioner can be reduced, improving its heat exchange performance and achieving the goals of product miniaturization and weight reduction.

[0008] However, current commercial air conditioning units with "top-discharge" air handling units, such as multi-split systems and air-cooled water chiller modules, still have many technical problems, such as:

[0009] The "top-discharge" method of air conditioning units is difficult to integrate with building distributed energy systems.

[0010] The implementation of building distributed energy systems involves moving air conditioning units directly from the rooftop into the equipment room on ordinary floors. The current "top-out" method of air conditioning units will cause the airflow of the external heat exchanger to circulate inside the equipment room, resulting in a significant increase in condensing pressure in cooling mode and a significant decrease in evaporating pressure in heating mode, which seriously damages the cooling and heating performance of the air conditioning units.

[0011] Adding an exhaust hood to the existing "top-discharge" air conditioning unit and transforming it into a side-discharge unit to connect to the exterior of the equipment room brings a series of problems, such as increased airflow resistance of the air conditioning unit's external heat exchanger, increased static pressure of the fan, and imbalance of static pressure inside and outside the fan. Summary of the Invention

[0012] To solve the above problems, the present invention provides a homogenized unidirectional exhaust chamber air static pressure air conditioning unit and an air conditioning water heater integrated unit, the technical solution of which is as follows:

[0013] A static pressure air conditioning unit for homogenizing unidirectional exhaust chambers according to the present invention includes:

[0014] Air conditioner housing;

[0015] An external heat exchanger unit of the air conditioning unit is located inside the inner cavity of the air conditioning housing, and together with at least a portion of the air conditioning housing, forms a negative pressure chamber of the air conditioning unit that connects to the heat exchange air path of the external heat exchanger unit of the air conditioning unit.

[0016] The air conditioner compressor is located inside the air conditioner housing and is used to connect the refrigerant pipeline of the external heat exchanger unit of the air conditioner and the refrigerant pipeline of the internal heat exchanger of the air conditioner to form at least one air conditioner refrigerant circulation loop, and to serve as the power source for the air conditioner refrigerant circulation.

[0017] A one-way exhaust cavity is connected to the air conditioner housing. The surface where the one-way exhaust cavity connects to the air conditioner housing is called the connecting surface. The connecting surface is provided with at least one air inlet that communicates with the negative pressure cavity of the air conditioner unit. One side of the one-way exhaust cavity is an exhaust surface for connecting to the outside. The surface inside the one-way exhaust cavity opposite to the connecting surface is defined as the fan-facing surface. All surfaces of the one-way exhaust cavity except for the connecting surface, the exhaust surface, and the fan-facing surface are side plates.

[0018] At least one centrifugal fan is installed in the one-way exhaust chamber corresponding to the air inlet;

[0019] A first preset interval is left between the opposite surface of the fan and the centrifugal fan to form a uniform unidirectional exhaust cavity air static pressure exhaust channel between the centrifugal fan and the opposite surface of the fan.

[0020] Under the action of the centrifugal fan, the outside airflow enters the air conditioner housing, flows through the external heat exchanger unit of the air conditioner unit for heat exchange, and then enters the negative pressure chamber of the air conditioner unit. After being drawn in and pressurized by the centrifugal fan, it is sent into the one-way exhaust chamber and discharged towards the exhaust surface. Among them, the open side airflow discharged by the centrifugal fan towards the exhaust surface is directly discharged to the exhaust surface, and the closed side airflow discharged by the centrifugal fan towards each of the side plates and / or between adjacent centrifugal fans is discharged towards the exhaust surface through the static pressure exhaust channel of the homogenized one-way exhaust chamber.

[0021] The homogenized unidirectional exhaust cavity air static pressure air conditioning unit of the present invention has two centrifugal fans;

[0022] The two centrifugal fans are arranged laterally at intervals within the unidirectional exhaust chamber, and the arrangement direction of the two centrifugal fans is parallel to the exhaust surface.

[0023] The uniform unidirectional exhaust cavity air static pressure air conditioning unit of the present invention has a second preset interval between the centrifugal fan and each of the side plates to form a side plate side exhaust channel between the centrifugal fan and the corresponding side plate;

[0024] A third preset interval is left between the centrifugal fan and the interior of the one-way exhaust chamber to form a connecting surface side exhaust channel between the centrifugal fan and the connecting surface.

[0025] The uniform unidirectional exhaust cavity air static pressure air conditioning unit of the present invention has an air inlet surface on the front side of the air conditioning housing and the two sides adjacent to the front side, and a back plate surface on the back side of the air conditioning housing.

[0026] The external heat exchanger unit of the air conditioning unit is a C-type heat exchanger, and the C-type heat exchanger is set corresponding to the three air inlet surfaces.

[0027] The uniform unidirectional exhaust cavity air static pressure air conditioning unit of the present invention has a detachable back panel on the back panel of the air conditioning housing.

[0028] The air static pressure air conditioning unit of the present invention with uniform unidirectional exhaust cavity has an air inlet surface consisting of a perforated plate and / or a mesh plate provided on the front and two sides of the air conditioning housing.

[0029] The present invention relates to a uniform unidirectional exhaust cavity air static pressure air conditioning unit, wherein the external heat exchanger unit of the air conditioning unit is a V-type heat exchanger.

[0030] The inner cavity of the air conditioner housing is divided into an upper heat exchange space and a lower equipment space;

[0031] The V-type heat exchanger is installed within the heat exchange space;

[0032] The equipment space is equipped with the air conditioning unit compressor, shell and tube heat exchanger and circulating water pump, which are respectively installed on the air conditioning refrigerant circulation loop or water circulation loop.

[0033] The uniform unidirectional exhaust cavity air static pressure air conditioning unit of the present invention also includes an electrical control box, which is located on the outside of any of the side plates.

[0034] The static pressure air conditioning unit of the present invention, which is a uniform unidirectional exhaust cavity air conditioning unit, wherein the centrifugal fan is a backward-curved centrifugal fan.

[0035] The present invention provides a combined air conditioning and water heater unit with an evaporator chamber and an air conditioning exhaust chamber arranged side by side, comprising:

[0036] An air conditioning unit includes an external heat exchanger cavity, an air conditioning unit compressor, an external heat exchanger exhaust cavity, and at least one external heat exchanger fan.

[0037] The inner cavity of the external heat exchanger chamber of the air conditioning unit is the negative pressure chamber of the external heat exchanger chamber of the air conditioning unit. A first installation space and a second installation space are arranged side by side on the top surface of the external heat exchanger chamber of the air conditioning unit. The air conditioning unit compressor is located in the negative pressure chamber of the external heat exchanger chamber of the air conditioning unit and is used as the power source for the air conditioning refrigerant circulation. The air inlet of the exhaust chamber of the external heat exchanger chamber of the air conditioning unit is connected to the top surface of the external heat exchanger chamber of the air conditioning unit and is located in the first installation space. The fan of the external heat exchanger chamber of the air conditioning unit is installed in the first installation space and connects the negative pressure chamber of the external heat exchanger chamber of the air conditioning unit and the exhaust chamber of the external heat exchanger chamber of the air conditioning unit.

[0038] An air source water heater unit includes an air source water heater evaporator chamber, an air source water heater compressor, an air source water heater evaporator exhaust chamber, and at least one air source water heater evaporator fan;

[0039] The air source water heater evaporator chamber is installed on the top surface of the external heat exchanger chamber of the air conditioner unit and is located within the second installation space; the air source water heater compressor is located in the negative pressure chamber of the external heat exchanger of the air conditioner unit and serves as the power source for refrigerant circulation in the air source water heater; the air inlet of the air source water heater evaporator exhaust chamber is connected to the top surface of the air source water heater evaporator chamber; the air source water heater evaporator centrifugal fan is installed at the outlet of the air source water heater evaporator module and connects the air source water heater evaporator chamber and the air source water heater evaporator exhaust chamber;

[0040] Wherein, the surface connecting the exhaust cavity of the air source water heater evaporator to the top surface of the air source water heater evaporator cavity is the connecting surface, and the surface opposite to the connecting surface of the air source water heater evaporator exhaust cavity is the fan-facing surface; a first preset interval is left between the fan-facing surface and the centrifugal fan of the air source water heater evaporator, so as to form an air static pressure exhaust channel between the centrifugal fan of the air source water heater evaporator and the fan-facing surface.

[0041] In this invention, the evaporator cavity and the air conditioner exhaust cavity are arranged side by side in the integrated air-conditioning water heater unit. Except for the connecting surface and the fan-facing surface, all other surfaces of the evaporator exhaust cavity of the air-source water heater are side plates.

[0042] A second preset interval is left between the centrifugal fan of the air source water heater evaporator and each of the side plates to form a side plate exhaust channel between the centrifugal fan of the air source water heater evaporator and the corresponding side plate.

[0043] The present invention provides an integrated air conditioning and water heater unit in which the evaporator cavity and the air conditioning exhaust cavity are arranged side by side. A third preset interval is left between the centrifugal fan of the air source water heater evaporator and the connecting surface of the air source water heater evaporator exhaust cavity, so as to form a connecting surface side exhaust channel between the centrifugal fan of the air source water heater evaporator and the connecting surface.

[0044] The present invention provides an air-conditioning water heater integrated unit in which the evaporator cavity and the air conditioner exhaust cavity are arranged side by side. The flow channel of the air source water heater evaporator exhaust cavity extends to the top surface of the air conditioner unit's external heat exchanger exhaust cavity, and the exhaust port of the air source water heater evaporator exhaust cavity is arranged adjacent to and above the exhaust port of the air conditioner unit's external heat exchanger exhaust cavity, forming an exhaust port combination facing the ambient atmosphere outside the outer facade of the equipment platform.

[0045] The present invention provides an air-conditioning water heater integrated host in which the evaporator cavity and the air-conditioning exhaust cavity are arranged side by side. The air-source water heater evaporator cavity includes an evaporator shell and an air-source water heater evaporator.

[0046] The air source water heater evaporator is located inside the evaporator shell and together with at least part of the evaporator shell, forms an air source water heater evaporator negative pressure chamber that connects to the heat exchange air path of the air source water heater evaporator.

[0047] The refrigerant pipeline of the air source water heater evaporator is used to connect the refrigerant pipeline of the air source water heater compressor and the internal heat exchanger of the air source water heater tank to form at least one air source water heater refrigerant circulation loop.

[0048] The present invention provides an air conditioning and water heater integrated unit in which the evaporator cavity and the air conditioning exhaust cavity are arranged side by side, wherein the external heat exchanger cavity of the air conditioning unit includes the air conditioning unit housing and the air conditioning unit external heat exchanger.

[0049] The external heat exchanger of the air conditioning unit is located inside the housing of the air conditioning unit, and together with at least part of the housing of the air conditioning unit, forms a negative pressure chamber of the external heat exchanger of the air conditioning unit that connects to the heat exchange air path of the external heat exchanger of the air conditioning unit.

[0050] The refrigerant piping of the external heat exchanger of the air conditioning unit is used to connect the compressor of the air conditioning unit and the refrigerant piping of the internal heat exchanger of the air conditioning unit to form at least one refrigerant circulation loop of the air conditioning unit.

[0051] The first installation space and the second installation space are arranged side by side on the top surface of the air conditioner unit housing along the length direction of the back panel of the air conditioner unit.

[0052] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art:

[0053] I. Promoting the homogenization of the static pressure field between the open and closed sides of the unidirectional exhaust cavity---This embodiment forms a homogenized static pressure exhaust channel between the fan-facing surface and the centrifugal fan in the unidirectional exhaust cavity by setting a first preset interval between them. This reduces the static pressure on the closed side (between the centrifugal fan and each side plate), expands the total cross-sectional area of ​​the exhaust cavity, thereby promoting the homogenization of the static pressure field between the open side (exhaust surface side) and the closed side of the unidirectional exhaust cavity, increasing the exhaust air volume in the fan-shaped area on the closed side of the impeller, and reducing the fan shaft power.

[0054] II. Solving the problem of asymmetrical lateral pressure on the fan---In conventional solutions, the centrifugal fan is directly installed in the unidirectional exhaust cavity, without the additional uniform unidirectional exhaust cavity air static pressure exhaust channel as in this embodiment. As a result, the outer side of the impeller facing the unidirectional exhaust cavity and the inner side of the impeller facing the closed side of the centrifugal fan will experience asymmetrical lateral pressure on the centrifugal fan due to the higher static pressure on the inner side, leading to problems such as unilateral wear of the motor shaft and increased operating noise.

[0055] In this embodiment, by setting a uniform unidirectional exhaust cavity air static pressure exhaust channel and / or a side plate exhaust channel and / or a connecting surface exhaust channel between the unidirectional exhaust cavity and the centrifugal fan, the gas on the closed side can be output to the open side through the corresponding exhaust channel, thereby reducing the static pressure on the closed side and thus eliminating the problem of lateral asymmetric pressure bearing of the fan.

[0056] 3. Larger heat exchange area and greater ventilation volume of the external heat exchanger---This embodiment sets up two centrifugal fans, with the centrifugal fans spaced parallel to the exhaust surface. That is, the long side of the unidirectional exhaust cavity is used as the air outlet, so that the length of the corresponding external heat exchanger unit of the air conditioner unit inside the air conditioner casing can be set to be longer, thereby obtaining a larger heat exchange area and a larger air intake volume; and the two centrifugal fans can also provide a larger ventilation volume and have the advantage of lower wind resistance.

[0057] IV. Application in Air-cooled Water Chiller Central Air Conditioning Units with Larger Heat Exchange Area – In this embodiment, the external heat exchanger unit of the air conditioning unit is set as a V-shaped heat exchanger, and the inner cavity of the air conditioning casing is divided into an upper heat exchange space and a lower equipment space. The V-shaped heat exchanger is installed in the heat exchange space, and the air conditioning casing can be configured as ventilation surfaces on all four sides of the heat exchange space. The various devices corresponding to the air-cooled water chiller air conditioning unit can be placed in the equipment space. Building upon the advantages of points I, II, and III mentioned above, the V-shaped heat exchanger offers a larger heat exchange area, a larger airflow, and lower air resistance.

[0058] V. Optimized the way the air outlet of the external heat exchanger of the central air conditioning unit is connected to the longitudinal air cavity --- In this embodiment, multiple longitudinal air cavities with their long sides perpendicular to the outer wall are set at the low position of the equipment room platform. The multiple longitudinal air cavities adopt a unidirectional channel structure, and the air outlet is set on the outer facade of the equipment room, thus constructing the basic form of the air conditioning unit equipment room. Multiple air static pressure air conditioning units with the above-mentioned uniform unidirectional exhaust air cavity are set on both sides (or one side) of the multiple longitudinal air cavities that construct the basic form of the equipment room. Each longitudinal air cavity is connected to the unidirectional exhaust air cavity of the multiple air conditioning units on both sides, collecting and gathering the air outlet of the multiple central air conditioning units on both sides (or one side), and implementing multi-point joint exhaust of the outer facade of the equipment room.

[0059] In this embodiment, multiple central air conditioning units on both sides (or one side) of the longitudinal air cavity discharge air into the longitudinal air cavity after being homogenized in their respective unidirectional exhaust cavities. The longitudinal air cavity is then discharged with a large volume, low speed, and low resistance by implementing path optimization.

[0060] VI. Improved overall performance of the air conditioning system---This embodiment completely solves the problems of high air pressure, low air volume, and high fan motor power caused by poor airflow in the external heat exchanger of the central air conditioning unit in the equipment room, as well as the resulting problems of high condensing pressure, insufficient condensate cooling, and insufficient cooling capacity in summer, and low evaporation temperature, insufficient heating capacity, high compression ratio, and high exhaust temperature of the air conditioning unit compressor in winter; This embodiment ensures that the energy efficiency ratio of the central air conditioning unit on-site is consistent with the energy efficiency ratio measured in the laboratory.

[0061] VII. Combining Air Conditioner and Air Source Water Heater into One Unit: Complementary Structure, Smooth Airflow, Reduced Exhaust Vent Density on External Surface, Lower Risk of Exhaust Backflow, and Improved Heat Exchanger Performance. One embodiment of this invention defines the inner cavity of the external heat exchanger chamber of the air conditioner as the negative pressure chamber of the external heat exchanger. The concept of a "negative pressure chamber" is incorporated into the structure of both the household air conditioner and the air source water heater. The air conditioner compressor and the air source water heater compressor are located within the negative pressure chamber of the external heat exchanger, maximizing the development of structural functions beyond the airflow channel function of the negative pressure chamber and eliminating all components outside the negative pressure chamber. Furthermore, the exhaust cavity of the external heat exchanger and the air source water heater are located on the top surface of the external heat exchanger chamber, achieving a "combined, internally centralized, externally simple, and highly efficient" structure for both the air conditioner and water heater.

[0062] This embodiment utilizes the unused space (ventilation blind zone) in the exhaust cavity of the air conditioner's external heat exchanger relative to the exhaust port side. The evaporator cavity of the air source water heater is extended into this unused space, transforming the ventilation blind zone of the air conditioner's exhaust cavity into an effective structural space for the negative pressure cavity of the air source water heater's evaporator. This achieves a complementary structural design between the negative pressure cavity of the air source water heater's evaporator and the exhaust cavity of the air conditioner's external heat exchanger, increasing the air intake area and heat exchange area of ​​the air source water heater's evaporator cavity.

[0063] In this embodiment, both the external heat exchanger of the air conditioning unit and the evaporator cavity of the air source water heater introduce fresh airflow from the exterior of the equipment platform through the front and side of the air conditioning unit casing and the evaporator casing. The fresh airflow flows over a large area at low speed and low resistance through the gaps between the fins on the front and side of the external heat exchanger to complete heat exchange before being drawn in by the fan, accelerated and pressurized, and discharged into the ambient atmosphere for diffusion and dilution in the form of a high-speed jet of about 10m / s. The 10m / s high-speed jet flow head in this embodiment is twice as high as the traditional 7m / s medium-speed jet flow head, greatly enhancing the ability to penetrate obstacles such as louvers and decorative items.

[0064] This embodiment addresses the problems of multiple exhaust vents for air conditioning units and air source water heaters on the exterior of the current equipment platform, resulting in fragmented air intake surfaces and easy backflow of exhaust air passing through the exterior. The solution involves placing the exhaust vents of the air source water heaters on the same side and adjacent to the exhaust vents of the air conditioning unit's external heat exchanger, forming a combined exhaust vent arrangement facing the external environment of the equipment platform. This centralized and combined arrangement of the air conditioning and air source water heater exhaust vents reduces the density of exhaust vents on the equipment platform's exterior, lowers the risk of exhaust backflow, and improves the heat exchange performance of the air conditioning and water heater heat exchangers.

[0065] In this embodiment, the air conditioner unit and the air source water heater unit are not only integrated into one, with a simple structure and smooth airflow, but also the risk of exhaust backflow on the exterior facade is reduced, and the cooling and heating performance of the unit is improved, approaching the laboratory test data. Attached Figure Description

[0066] Figure 1 This is a side view of the uniform unidirectional exhaust cavity air static pressure air conditioning unit according to Embodiment 1 of the present invention;

[0067] Figure 2 This is an operational view of the uniform unidirectional exhaust cavity air static pressure air conditioning unit according to Embodiment 1 of the present invention;

[0068] Figure 3 This is a schematic diagram of the static pressure air conditioning unit with a uniform unidirectional exhaust cavity air conditioning system according to Embodiment 1 of the present invention, which is equipped with two centrifugal fans;

[0069] Figure 4 A rear view of the air static pressure air conditioning unit with two centrifugal fans in the uniform unidirectional exhaust cavity of Embodiment 1 of the present invention;

[0070] Figure 5 A side view of the air static pressure air conditioning unit with two centrifugal fans in the uniform unidirectional exhaust cavity of Embodiment 1 of the present invention;

[0071] Figure 6 This is a schematic diagram of the homogenized unidirectional exhaust cavity air static pressure air conditioning unit according to Embodiment 2 of the present invention;

[0072] Figure 7 This is a side view of the homogenized unidirectional exhaust cavity air static pressure air conditioning unit according to Embodiment 2 of the present invention;

[0073] Figure 8 This is a side view of the operating state of the uniform unidirectional exhaust cavity air static pressure air conditioning unit according to Embodiment 2 of the present invention;

[0074] Figure 9 This is a front view of the operating state of the uniform unidirectional exhaust cavity air static pressure air conditioning unit according to Embodiment 2 of the present invention;

[0075] Figure 10 This is a schematic diagram of the combined air conditioning and water heater unit with the evaporator cavity and the air conditioning exhaust cavity arranged side by side in Embodiment 3 of the present invention;

[0076] Figure 11 This is a front view of the combined air conditioning and water heater unit with the evaporator cavity and air conditioning exhaust cavity arranged side by side in Embodiment 3 of the present invention;

[0077] Figure 12 This is a schematic diagram of the operating status of the air conditioning water heater integrated host unit with the evaporator cavity and the air conditioning exhaust cavity arranged side by side in Embodiment 3 of the present invention;

[0078] Figure 13 This is a schematic diagram of the central air conditioning unit in the initial design of this invention;

[0079] Figure 14 A top view of the asymmetrical and unbalanced operation of the centrifugal fan exhaust of the central air conditioning unit in the initial design of this invention.

[0080] Figure 15 This is a schematic diagram of an existing top-discharge multi-split air conditioning unit module;

[0081] Figure 16 This is a schematic diagram of an existing commercial air-cooled water chiller module.

[0082] Explanation of reference numerals in the attached drawings: 1: Air conditioner casing; 2: One-way exhaust cavity; 201: Exhaust surface; 202: Side plate; 3: Centrifugal fan; 4: C-type heat exchanger; 5: Air conditioner compressor; 6: Air inlet surface; 7: Gas-liquid separator; 8: V-type heat exchanger; 9: Shell-and-tube heat exchanger; 10: Circulating water pump; 11: Electrical control box; 12: Air conditioner negative pressure cavity; 13: Fixing frame; Air inlet / exhaust outlet; 21: Air conditioner external heat exchanger cavity; 22: Air conditioner external heat exchanger exhaust cavity; 23: Air conditioner external heat exchanger fan; 24: Air source water heater evaporator cavity; 25: Air source water heater evaporator exhaust cavity; 26: Air source water heater evaporator fan; 27: Air conditioner compressor; 28: Air source water heater compressor. Detailed Implementation

[0083] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a homogenized unidirectional exhaust cavity air static pressure air conditioning unit and an air conditioning water heater integrated unit based on the present invention. The advantages and features of the present invention will become clearer from the following description and claims.

[0084] Example 1

[0085] See Figure 1 and Figure 2 In one embodiment, a uniform unidirectional exhaust cavity air static pressure air conditioning unit includes an air conditioning housing 1, an air conditioning unit external heat exchanger unit, an air conditioning unit compressor 5, a unidirectional exhaust cavity 2, and at least one centrifugal fan 3.

[0086] The external heat exchanger unit of the air conditioning unit is located inside the inner ring of the air conditioning housing 1, and together with at least part of the air conditioning housing 1, forms an air conditioning unit negative pressure chamber 12 that connects the heat exchange air path of the external heat exchanger unit of the air conditioning unit.

[0087] The air conditioner compressor 5 is located inside the air conditioner housing 1. It is used to connect the refrigerant pipeline of the external heat exchanger unit of the air conditioner to the refrigerant pipeline of the internal heat exchanger of the air conditioner to form at least one air conditioner refrigerant circulation loop, and to serve as the power source for the refrigerant circulation.

[0088] The unidirectional exhaust cavity 2 is connected to the air conditioner housing 1 (it can be connected to the top, bottom, or any side of the air conditioner housing 1). The surface where the unidirectional exhaust cavity 2 connects to the air conditioner housing 1 is called the connecting surface. The connecting surface has at least one air inlet that communicates with the negative pressure cavity 12 of the air conditioner unit. One side of the unidirectional exhaust cavity 2 is an exhaust surface 201 for connecting to the outside. The surface inside the unidirectional exhaust cavity 2 opposite to the connecting surface is defined as the fan-facing surface. Then, all surfaces of the unidirectional exhaust cavity except for the connecting surface, the exhaust surface, and the fan-facing surface are side plates (the exhaust surface and the fan-facing surface can be the same outer side of the air conditioner housing).

[0089] The centrifugal fan 3 has its corresponding air inlet installed inside the one-way exhaust chamber 2.

[0090] There is a first preset interval between the opposite side of the fan and the centrifugal fan 3, so as to form a uniform unidirectional exhaust cavity air static pressure exhaust channel between the centrifugal fan 3 and the opposite side of the fan.

[0091] Under the action of centrifugal fan 3, the outside airflow enters the air conditioner casing 1, flows through the external heat exchanger unit of the air conditioner unit for heat exchange, and then enters the negative pressure chamber 12 of the air conditioner unit. After being drawn in and pressurized by centrifugal fan 3, it is sent into the one-way exhaust chamber 2 and discharged towards the exhaust surface 201. Among them, the open side airflow discharged by centrifugal fan 3 towards the exhaust surface 201 is directly discharged to the exhaust surface 201, and the closed side airflow discharged by centrifugal fan 3 towards each side plate 202 and / or between adjacent centrifugal fans 3 is discharged towards the exhaust surface 201 through the homogenized one-way exhaust chamber air static pressure exhaust channel.

[0092] This embodiment forms a uniform unidirectional exhaust air static pressure exhaust channel between the fan-facing side of the unidirectional exhaust chamber 2 and the centrifugal fan 3 by setting a first preset interval between them. This reduces the static pressure on the closed side (between the centrifugal fan 3 and each side plate 202), expands the total exhaust cross-sectional area of ​​the unidirectional exhaust chamber 2, thereby promoting the uniformity of the air static pressure field between the open side (exhaust surface 201 side) and the closed side of the unidirectional exhaust chamber 2, increasing the exhaust air volume in the fan-shaped area on the closed side of the impeller, and reducing the fan shaft power.

[0093] The following description further illustrates the specific structure of the uniform unidirectional exhaust cavity air static pressure air conditioning unit in this embodiment, taking the example of the unidirectional exhaust cavity 2 being located on the top surface of the air conditioning housing 1:

[0094] See Figures 3 to 5 In this embodiment, in order to improve the cooling power of the air static pressure air conditioning unit in the unidirectional exhaust cavity, the number of centrifugal fans 3 in the unidirectional exhaust cavity 2 can be set to two.

[0095] Two centrifugal fans 3 are arranged laterally at intervals in the unidirectional exhaust cavity 2, and the arrangement direction of the two centrifugal fans 3 is parallel to the exhaust surface 201. That is, the long side of the unidirectional exhaust cavity 2 is used as the air outlet position, so that the length of the corresponding external heat exchanger unit of the air conditioning unit inside the air conditioning housing 1 can be set to be longer, thereby obtaining a larger heat exchange area and a larger air intake volume; and the two centrifugal fans 3 can also provide a larger ventilation volume and have the advantage of lower wind resistance.

[0096] In this embodiment, in order to further guide the airflow on the closed side, a second preset interval can be left between the centrifugal fan 3 and each side plate 202 to form a side plate side exhaust channel on the side of the centrifugal fan 3. A third preset height can also be left between the connecting surface of the centrifugal fan 3 and the unidirectional exhaust cavity 2 to form a connecting surface side exhaust channel on the lower side of the centrifugal fan 3.

[0097] Therefore, by homogenizing the air static pressure exhaust channel of the unidirectional exhaust chamber and / or the exhaust channel of the side plate and / or the exhaust channel of the connecting surface, the gas on the closed side can be output to the open side through the corresponding exhaust channel, which can effectively reduce the static pressure on the closed side, thereby eliminating the problem of lateral asymmetric pressure on the fan caused by the static pressure.

[0098] In this embodiment, the centrifugal fan 3 is a backward-curved centrifugal fan 3. The motor of the backward-curved centrifugal fan 3 can be installed in the one-way exhaust chamber 2 through the fixing frame 13, and its impeller is set close to the air inlet. Compared with the axial flow fan in the existing solution, the backward-curved centrifugal fan 3 has a larger air pressure and a larger air volume, which can make the airflow in the transverse air bag discharged in a jet manner, which can better avoid the short circuit phenomenon of air inlet and outlet of the external heat exchanger. Of course, when it is necessary to increase the height of the impeller to establish a lower exhaust channel, an upward-extending air guide ring can be formed at the air inlet of the one-way exhaust chamber 2, thereby raising the position of the air inlet and allowing the impeller to be raised.

[0099] In this embodiment, the arrangement of the air conditioner housing 1 and the heat exchanger can be in two ways. One is to directly connect the refrigerant. In this form, the front of the air conditioner housing 1 and the two sides adjacent to the front are air inlet surfaces 6, and the back of the air conditioner housing 1 is a back panel. The back panel can be set as a detachable back panel.

[0100] The external heat exchanger unit of the air conditioning unit can be a C-type heat exchanger 4, with the three sides of the C-type heat exchanger 4 corresponding to the three air inlet sides 6 respectively.

[0101] The air conditioning unit compressor 5 and gas-liquid separator 7, which are located on the air conditioning refrigerant circulation loop, can also be placed directly inside the air conditioning housing 1, that is, the part of the inner cavity of the air conditioning housing 1 excluding the C-type heat exchanger 4 is used as the equipment cavity.

[0102] In this embodiment, the air inlet surface 6 is a perforated plate and / or mesh plate provided on the front and two sides of the air conditioner housing 1, so that external airflow can smoothly flow into the inner cavity of the air conditioner housing 1.

[0103] In this embodiment, when the uniform unidirectional exhaust cavity air static pressure air conditioning unit is running, the centrifugal fan 3 generates a negative pressure zone below the air inlet, drawing in fresh ambient air into the air conditioning casing 1 and laterally passing through the external heat exchanger unit of the air conditioning unit to exchange heat. After heat exchange, the air is drawn into the unidirectional exhaust cavity 2 by the centrifugal fan 3. The area of ​​the impeller fan-shaped region facing the exhaust surface 201 of the centrifugal fan 3 has low static pressure and smooth exhaust. The area of ​​the impeller fan-shaped region facing each side plate 202 of the centrifugal fan 3 has high static pressure. Under the action of static pressure, this part of the airflow is output upward through the uniform unidirectional exhaust cavity air static pressure exhaust channel towards the exhaust surface 201 and merges with the airflow on the open side, so that the air static pressure field on the open and closed sides of the unidirectional exhaust cavity 2 is uniform, increasing the exhaust air volume in the closed fan-shaped region of the centrifugal fan 3 impeller, improving the uniformity of the air velocity at the exhaust cavity outlet section, and eliminating the problem of lateral asymmetric pressure bearing of the fan.

[0104] Example 2

[0105] See Figures 6 to 9 Based on the above embodiment one, this embodiment replaces the air conditioner housing 1 and the external heat exchanger unit of the air conditioner main unit, so that the air conditioner housing 1 and the external heat exchanger unit of the air conditioner main unit can be adapted to the existing water-cooled central air conditioning main unit.

[0106] The external heat exchanger unit of the air conditioning unit can be a V-type heat exchanger 8. The inner cavity of the air conditioning casing 1 can be divided into a heat exchange space and an equipment space located at the top and bottom. The V-type heat exchanger 8 is installed in the heat exchange space, and the air conditioning unit compressor 5, shell and tube heat exchanger 9, and circulating water pump 10 are installed in the equipment space, respectively installed on the corresponding air conditioning refrigerant circulation loop or water circulation loop. The electrical control box 11 can be located on the outside of any side panel 202.

[0107] The external heat exchanger unit of the air conditioning unit is configured as a V-shaped heat exchanger 8, and the inner cavity of the air conditioning housing 1 is divided into an upper heat exchange space and a lower equipment space. The V-shaped heat exchanger 8 is installed in the heat exchange space, and the air conditioning housing 1 can be configured as a ventilation surface on all four sides of the heat exchange space. The various devices corresponding to the air-cooled water chiller air conditioning unit can be placed in the equipment space. Based on the advantages of the above-mentioned embodiment 1, the V-shaped heat exchanger 8 has the advantages of a larger heat exchange area, a larger ventilation volume, and lower wind resistance.

[0108] Example 3

[0109] This embodiment provides a combined air conditioning and water heater unit with the evaporator cavity and the air conditioning exhaust cavity arranged side by side, including an air conditioning unit and an air source water heater unit.

[0110] The air conditioning unit includes an external heat exchanger cavity 21, an air conditioning compressor 27, an external heat exchanger exhaust cavity 22, and at least one external heat exchanger fan 23. The inner cavity of the external heat exchanger cavity 21 is a negative pressure chamber. A first installation space and a second installation space are arranged side-by-side on the top surface of the external heat exchanger cavity 21. The air conditioning compressor 27 is located within the negative pressure chamber and serves as the power source for refrigerant circulation. The air inlet of the external heat exchanger exhaust cavity 22 is connected to the top surface of the external heat exchanger cavity 21 and is located within the first installation space. The external heat exchanger fan 23 is installed in the first installation space and connects the external heat exchanger negative pressure chamber and the external heat exchanger exhaust cavity 22.

[0111] The air source heat pump water heater unit includes an evaporator chamber 24, an air source heat pump compressor 28, an evaporator exhaust chamber 25, and at least one evaporator fan 26. The evaporator chamber 24 is installed on the top surface of the external heat exchanger chamber 21 of the air conditioning unit and is located within the second installation space. The air source heat pump compressor 28 is located in the negative pressure chamber of the external heat exchanger of the air conditioning unit and serves as the power source for refrigerant circulation. The air inlet of the evaporator exhaust chamber 25 is connected to the top surface of the evaporator chamber 24. The centrifugal fan is installed at the outlet of the evaporator module and connects the evaporator chamber 24 and the evaporator exhaust chamber 25.

[0112] The surface where the top surface of the air source heat pump water heater evaporator exhaust chamber 25 connects to the top surface of the air source heat pump water heater evaporator chamber 24 is called the connecting surface, and the surface opposite to the connecting surface of the air source heat pump water heater evaporator exhaust chamber 25 is called the fan-facing surface. A first preset gap is left between the fan-facing surface and the centrifugal fan of the air source heat pump water heater evaporator to form an air static pressure exhaust channel between the centrifugal fan and the fan-facing surface.

[0113] This embodiment creates a uniform air static pressure exhaust channel in the air source heat pump water heater evaporator exhaust cavity 25 by setting a first preset interval between the fan-facing surface of the air source heat pump water heater evaporator exhaust cavity 25 and the centrifugal fan of the air source heat pump water heater evaporator. This reduces the static pressure on the closed side (between the centrifugal fan of the air source heat pump water heater evaporator and the various side plates of the air source heat pump water heater evaporator exhaust cavity 25), expands the total exhaust cross-sectional area of ​​the air source heat pump water heater evaporator exhaust cavity 25, thereby promoting the uniformity of the air static pressure field between the open side (exhaust outlet side) and the closed side of the air source heat pump water heater evaporator exhaust cavity 25, increasing the exhaust air volume in the fan-shaped area on the closed side of the impeller, and reducing the fan shaft power.

[0114] Furthermore, in this embodiment, the inner cavity of the external heat exchanger cavity 21 of the air conditioning unit is defined as the negative pressure cavity of the external heat exchanger of the air conditioning unit. The concept of "negative pressure cavity" is injected into the structure of the household air conditioning unit and the air source water heater unit. The air conditioning unit compressor 27, the air source water heater compressor 28 and other structures are set inside the negative pressure cavity of the external heat exchanger of the air conditioning unit. The structural functions of the negative pressure cavity of the external heat exchanger of the air conditioning unit are developed to the greatest extent, except for the function of the air flow channel. All components outside the negative pressure cavity are removed. The exhaust cavity 22 of the external heat exchanger of the air conditioning unit and the air source water heater unit are set on the top surface of the external heat exchanger cavity 21 of the air conditioning unit, realizing the "two-in-one, internally centralized, externally simple, and highly efficient" structure of the air conditioning and water heater units.

[0115] The following is a further explanation of the specific structure of the fused body in which the evaporator cavity 24 of the air source water heater and the exhaust cavity of the air conditioning unit are arranged side by side in this embodiment:

[0116] In this embodiment, the exhaust chamber 25 of the air source water heater evaporator, except for the connecting surface and the fan-facing surface mentioned above, consists entirely of side plates. Furthermore, to further guide the airflow on the closed side, a second preset interval is left between the centrifugal fan of the air source water heater evaporator and each side plate, so as to form a side plate side exhaust channel between the centrifugal fan of the air source water heater evaporator and the corresponding side plate.

[0117] Furthermore, a third preset interval is left between the centrifugal fan of the air source water heater evaporator and the connecting surface of the air source water heater evaporator exhaust chamber 25, so as to form a connecting surface side exhaust channel between the centrifugal fan of the air source water heater evaporator and the connecting surface.

[0118] Therefore, by setting up an air static pressure exhaust channel and / or a side plate exhaust channel and / or a connecting surface exhaust channel, the gas on the closed side can be output to the open side through the corresponding exhaust channel, which can effectively reduce the static pressure on the closed side and thus eliminate the problem of lateral asymmetric pressure on the fan caused by the static pressure.

[0119] In this embodiment, the centrifugal fan of the air source water heater evaporator can specifically be a backward-curved centrifugal fan. The motor of the backward-curved centrifugal fan can be installed in the exhaust chamber 25 of the air source water heater evaporator through the fixing frame 13, and its impeller is set close to the air inlet of the exhaust chamber 25. Compared with the axial flow fan in the existing solution, the backward-curved centrifugal fan has higher air pressure and more air volume, which can make the airflow in the transverse air jacket discharged in a jet manner, which can better avoid the short circuit phenomenon of air inlet and outlet of the external heat exchanger. Of course, when it is necessary to increase the height of the impeller to establish a lower exhaust channel, an upward-extending air guide ring can be formed at the air inlet, thereby raising the position of the air inlet and allowing the impeller to be raised.

[0120] In this embodiment, the flow channel of the air source water heater evaporator exhaust cavity 25 extends to the top surface of the air conditioner main unit's external heat exchanger exhaust cavity 22, and the exhaust port of the air source water heater evaporator exhaust cavity 25 is arranged adjacent to the exhaust port of the air conditioner main unit's external heat exchanger exhaust cavity 22, forming a rectangular exhaust port combination facing the external ambient atmosphere of the equipment platform's exterior facade. By concentrating and merging the exhaust ports of the air conditioner main unit and the air source water heater main unit, the exhaust port density on the equipment platform's exterior facade is reduced, the risk of exhaust backflow is reduced, and the heat exchange performance of the air conditioner and water heater main unit's heat exchangers is improved.

[0121] In this embodiment, the evaporator chamber 24 of the air source water heater may specifically include an evaporator shell and an air source water heater evaporator. The air source water heater evaporator is disposed within the evaporator shell and, together with at least a portion of the evaporator shell, forms an air source water heater evaporator negative pressure chamber that connects to the heat exchange air path of the air source water heater evaporator. The refrigerant pipeline of the air source water heater evaporator is used to connect the refrigerant pipeline of the air source water heater compressor 28 and the internal heat exchanger of the air source water heater tank to form at least one air source water heater refrigerant circulation loop.

[0122] Furthermore, the air source water heater unit also includes an air source water heater four-way valve and an air source water heater expansion valve located within the negative pressure chamber of the external heat exchanger of the air conditioning unit. These two valves are positioned on the refrigerant circulation loop of the air source water heater. In other words, a portion of the air source water heater refrigerant circulation loop, along with the air source water heater compressor 288, the four-way valve, and the expansion valve, are all located within the negative pressure chamber of the external heat exchanger of the air conditioning unit. By placing the air conditioning unit compressor 27, the air source water heater compressor 28, and other structures within the negative pressure chamber of the external heat exchanger, the structural functions beyond the airflow channel function of the external heat exchanger are maximized.

[0123] Specifically, the side of the evaporator shell facing the outside of the equipment room is the front side, the side facing the inside of the equipment room is the back side, and the side away from the exhaust cavity 22 of the external heat exchanger of the air conditioning unit is the outer side. The front, outer side and / or back of the evaporator shell can be set as the air inlet surface of the evaporator. The air source water heater evaporator can be a C-shaped finned tube evaporator, a U-shaped finned tube evaporator or an L-shaped finned tube evaporator corresponding to the air inlet surface of the evaporator.

[0124] In this embodiment, the external heat exchanger cavity 21 of the air conditioning unit may specifically include the air conditioning unit housing and the external heat exchanger of the air conditioning unit.

[0125] Each side of the air conditioner unit casing includes an air conditioner unit back panel and a front air intake panel opposite to the air conditioner unit back panel. The air conditioner unit's external heat exchanger is located inside the air conditioner unit casing and, together with at least a portion of the air conditioner unit casing, forms the aforementioned negative pressure chamber of the air conditioner unit's external heat exchanger, which connects to the heat exchange air path of the external heat exchanger. The refrigerant piping of the air conditioner unit's external heat exchanger is used to connect the air conditioner unit compressor 277 with the refrigerant piping of the air conditioner's internal heat exchanger, forming at least one air conditioner unit refrigerant circulation loop.

[0126] The first and second installation spaces mentioned above are arranged side by side on the top surface of the air conditioner unit housing along the length of the back panel of the air conditioner unit.

[0127] Furthermore, the air conditioning unit also includes a four-way valve 9, an expansion valve, and an electrical box, all located within the negative pressure chamber of the external heat exchanger. The four-way valve 9 and the expansion valve are positioned on the refrigerant circulation loop of the air conditioning unit, while the electrical box is mounted on the inner wall of the back panel of the air conditioning unit. This design fully utilizes the ventilation blind spot within the negative pressure chamber of the external heat exchanger, eliminating all components outside the negative pressure chamber. The relays, controllers, and other components of both the air conditioning unit and the air source water heater unit are housed within this electrical box.

[0128] Furthermore, the exhaust cavity 22 of the external heat exchanger of the air conditioning unit is a guide bend, and the exhaust surface of the guide bend is parallel to the forward air intake surface, thus realizing forward air intake and forward air exhaust.

[0129] Specifically, the front air intake surface of the air conditioning unit casing and one or two sides connected to it are the air intake surface of the air conditioning unit casing, and the external heat exchanger of the air conditioning unit can be a corresponding C-shaped finned tube external heat exchanger, U-shaped finned tube external heat exchanger, or L-shaped finned tube external heat exchanger.

[0130] In this embodiment, the air conditioner's external heat exchanger fan 23 is an axial flow fan or a centrifugal fan, and the water heater fan is also an axial flow fan or a centrifugal fan. It only needs to serve as a power source for airflow, and no specific limitations are made here. When the air conditioner's external heat exchanger fan 23 is a centrifugal fan, the aforementioned first preset gap, second preset gap, and third preset gap can also be provided in the air guide bend to achieve uniform exhaust airflow from the centrifugal fan within the air guide bend.

[0131] In this embodiment, the evaporator chamber 24 of the air source water heater and the exhaust chamber of the air conditioning unit are arranged side by side in a fused unit. During operation, the centrifugal fan of the air source water heater evaporator generates a negative pressure zone below the air inlet, drawing in fresh ambient air into the evaporator shell and laterally passing through the air source water heater evaporator to exchange heat. After heat exchange, the air source water heater evaporator centrifugal fan draws the air into the exhaust chamber 25 of the air source water heater evaporator. The area covered by the fan-shaped impeller of the centrifugal fan facing the exhaust surface has low static pressure and smooth exhaust. The static pressure is high in the fan-shaped area of ​​the centrifugal fan impeller facing each side plate of the air source water heater evaporator. Under the action of static pressure, the airflow in this part is output upward through the uniform unidirectional exhaust cavity air static pressure exhaust channel towards the exhaust surface and merges with the airflow on the open side. This makes the air static pressure field on the open and closed sides of the exhaust cavity 25 of the air source water heater evaporator uniform, increases the exhaust air volume in the fan-shaped area on the closed side of the centrifugal fan impeller of the air source water heater evaporator, improves the uniformity of the air velocity at the exhaust cavity outlet section, and eliminates the problem of lateral asymmetric pressure bearing of the fan.

[0132] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A static pressure air conditioning unit with a uniform unidirectional exhaust chamber, characterized in that, include: Air conditioner housing; An external heat exchanger unit of the air conditioning unit is located inside the inner cavity of the air conditioning housing, and together with at least a portion of the air conditioning housing, forms a negative pressure chamber of the air conditioning unit that connects to the heat exchange air path of the external heat exchanger unit of the air conditioning unit. The air conditioner compressor is located inside the air conditioner housing and is used to connect the refrigerant pipeline of the external heat exchanger unit of the air conditioner and the refrigerant pipeline of the internal heat exchanger of the air conditioner to form at least one air conditioner refrigerant circulation loop, and to serve as the power source for the air conditioner refrigerant circulation. A one-way exhaust cavity is connected to the air conditioner housing. The surface where the one-way exhaust cavity connects to the air conditioner housing is called the connecting surface. The connecting surface is provided with at least one air inlet that communicates with the negative pressure cavity of the air conditioner unit. One side of the one-way exhaust cavity is an exhaust surface for connecting to the outside. The surface inside the one-way exhaust cavity opposite to the connecting surface is defined as the fan-facing surface. All surfaces of the one-way exhaust cavity except for the connecting surface, the exhaust surface, and the fan-facing surface are side plates. At least one centrifugal fan is installed in the one-way exhaust chamber corresponding to the air inlet; A first preset interval is left between the opposite surface of the fan and the centrifugal fan to form a uniform unidirectional exhaust cavity air static pressure exhaust channel between the centrifugal fan and the opposite surface of the fan. Under the action of the centrifugal fan, the outside airflow enters the air conditioner housing, flows through the external heat exchanger unit of the air conditioner unit for heat exchange, and then enters the negative pressure chamber of the air conditioner unit. After being drawn in and pressurized by the centrifugal fan, it is sent into the one-way exhaust chamber and discharged towards the exhaust surface. Among them, the open side airflow discharged by the centrifugal fan towards the exhaust surface is directly discharged to the exhaust surface, and the closed side airflow discharged by the centrifugal fan towards each of the side plates and / or between adjacent centrifugal fans is discharged towards the exhaust surface through the static pressure exhaust channel of the homogenized one-way exhaust chamber.

2. The homogenized unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 1, characterized in that, The number of centrifugal fans is two; The two centrifugal fans are arranged laterally at intervals within the unidirectional exhaust chamber, and the arrangement direction of the two centrifugal fans is parallel to the exhaust surface.

3. The uniform unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 1, characterized in that, A second preset interval is left between the centrifugal fan and each of the side plates to form a side plate exhaust channel between the centrifugal fan and the corresponding side plate; A third preset interval is left between the centrifugal fan and the connection surface of the unidirectional exhaust chamber to form a connection surface side exhaust channel between the centrifugal fan and the connection surface.

4. The homogenized unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 1, characterized in that, The front of the air conditioner housing and the two sides adjacent to the front are both air intake surfaces, and the back of the air conditioner housing is a back panel surface. The external heat exchanger unit of the air conditioning unit is a C-type heat exchanger, and the C-type heat exchanger is set corresponding to the three air inlet surfaces.

5. The homogenized unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 4, characterized in that, The back panel of the air conditioner housing is a removable back panel.

6. The homogenized unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 4, characterized in that, The air inlet surface is a perforated plate and / or mesh plate provided on the front and two sides of the air conditioner housing.

7. The homogenized unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 1, characterized in that, The external heat exchanger unit of the air conditioning unit is a V-type heat exchanger; The inner cavity of the air conditioner housing is divided into an upper heat exchange space and a lower equipment space; The V-type heat exchanger is installed within the heat exchange space; The equipment space is equipped with the air conditioning unit compressor, shell and tube heat exchanger and circulating water pump, which are respectively installed on the air conditioning refrigerant circulation loop or water circulation loop.

8. The homogenized unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 7, characterized in that, It also includes an electrical control box, which is located on the outside of any of the side panels.

9. The homogenized unidirectional exhaust chamber air static pressure air conditioning unit as described in claim 1, characterized in that, The centrifugal fan is a backward-curved centrifugal fan.

10. A combined air conditioning and water heater unit with its evaporator chamber and air conditioning exhaust chamber arranged side by side, characterized in that... include: An air conditioning unit includes an external heat exchanger cavity, an air conditioning unit compressor, an external heat exchanger exhaust cavity, and at least one external heat exchanger fan. The inner cavity of the external heat exchanger chamber of the air conditioning unit is the negative pressure chamber of the external heat exchanger chamber of the air conditioning unit. A first installation space and a second installation space are arranged side by side on the top surface of the external heat exchanger chamber of the air conditioning unit. The air conditioning unit compressor is located in the negative pressure chamber of the external heat exchanger chamber of the air conditioning unit and is used as the power source for the air conditioning refrigerant circulation. The air inlet of the exhaust chamber of the external heat exchanger chamber of the air conditioning unit is connected to the top surface of the external heat exchanger chamber of the air conditioning unit and is located in the first installation space. The fan of the external heat exchanger chamber of the air conditioning unit is installed in the first installation space and connects the negative pressure chamber of the external heat exchanger chamber of the air conditioning unit and the exhaust chamber of the external heat exchanger chamber of the air conditioning unit. An air source water heater unit includes an air source water heater evaporator chamber, an air source water heater compressor, an air source water heater evaporator exhaust chamber, and at least one air source water heater evaporator fan; The air source water heater evaporator cavity is installed on the top surface of the external heat exchanger cavity of the air conditioner unit and is located within the second installation space; The air source water heater compressor is located in the negative pressure chamber of the external heat exchanger of the air conditioning unit and is used as the power source for the refrigerant circulation of the air source water heater; the air inlet of the air source water heater evaporator exhaust chamber is connected to the top surface of the air source water heater evaporator chamber; The centrifugal fan of the air source water heater evaporator is installed at the outlet of the air source water heater evaporator module and connects the air source water heater evaporator cavity and the air source water heater evaporator exhaust cavity; Wherein, the surface connecting the exhaust cavity of the air source water heater evaporator to the top surface of the air source water heater evaporator cavity is the connecting surface, and the surface opposite to the connecting surface of the air source water heater evaporator exhaust cavity is the fan-facing surface; a first preset interval is left between the fan-facing surface and the centrifugal fan of the air source water heater evaporator, so as to form an air static pressure exhaust channel between the centrifugal fan of the air source water heater evaporator and the fan-facing surface.

11. The combined air conditioning and water heater unit with the evaporator chamber and air conditioning exhaust chamber arranged side by side as described in claim 10, characterized in that... Except for the connecting surface and the opposite surface of the fan, all other surfaces of the evaporator exhaust cavity of the air source water heater are side plates. A second preset interval is left between the centrifugal fan of the air source water heater evaporator and each of the side plates to form a side plate exhaust channel between the centrifugal fan of the air source water heater evaporator and the corresponding side plate.

12. The combined air conditioning and water heater unit with the evaporator chamber and air conditioning exhaust chamber arranged side by side as described in claim 10, characterized in that... A third preset interval is left between the centrifugal fan of the air source water heater evaporator and the exhaust cavity of the air source water heater evaporator, so as to form an exhaust channel on the connection side between the centrifugal fan of the air source water heater evaporator and the connection surface.

13. The combined air conditioning and water heater unit with the evaporator chamber and air conditioning exhaust chamber arranged side by side as described in claim 10, characterized in that... The flow channel of the air source water heater evaporator exhaust cavity extends to the top surface of the air conditioner main unit's external heat exchanger exhaust cavity, and the exhaust port of the air source water heater evaporator exhaust cavity is arranged adjacent to the exhaust port of the air conditioner main unit's external heat exchanger exhaust cavity above it, forming an exhaust port combination facing the external ambient atmosphere of the equipment platform's exterior facade.

14. The combined air conditioning and water heater unit with the evaporator chamber and air conditioning exhaust chamber arranged side by side as described in claim 10, characterized in that... The evaporator chamber of an air source water heater includes the evaporator shell and the air source water heater evaporator; The air source water heater evaporator is located inside the evaporator shell and together with at least part of the evaporator shell, forms an air source water heater evaporator negative pressure chamber that connects to the heat exchange air path of the air source water heater evaporator. The refrigerant pipeline of the air source water heater evaporator is used to connect the refrigerant pipeline of the air source water heater compressor and the internal heat exchanger of the air source water heater tank to form at least one air source water heater refrigerant circulation loop.

15. The combined air conditioning and water heater unit with the evaporator chamber and air conditioning exhaust chamber arranged side by side as described in claim 10, characterized in that... The external heat exchanger cavity of the air conditioning unit includes the air conditioning unit housing and the external heat exchanger of the air conditioning unit. The external heat exchanger of the air conditioning unit is located inside the housing of the air conditioning unit, and together with at least part of the housing of the air conditioning unit, forms a negative pressure chamber of the external heat exchanger of the air conditioning unit that connects to the heat exchange air path of the external heat exchanger of the air conditioning unit. The refrigerant piping of the external heat exchanger of the air conditioning unit is used to connect the compressor of the air conditioning unit and the refrigerant piping of the internal heat exchanger of the air conditioning unit to form at least one refrigerant circulation loop of the air conditioning unit. The first installation space and the second installation space are arranged side by side on the top surface of the air conditioner unit housing along the length direction of the back panel of the air conditioner unit.

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