CN219889664U - Outer corridor type equipment platform adopting zigzag type finned tube heat exchanger air conditioner host - Google Patents
Outer corridor type equipment platform adopting zigzag type finned tube heat exchanger air conditioner host Download PDFInfo
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- CN219889664U CN219889664U CN202321205854.4U CN202321205854U CN219889664U CN 219889664 U CN219889664 U CN 219889664U CN 202321205854 U CN202321205854 U CN 202321205854U CN 219889664 U CN219889664 U CN 219889664U
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Abstract
The utility model belongs to the technical field of green buildings and energy-saving air conditioners, and discloses a corridor type equipment platform of an air conditioner host adopting a broken-line type finned tube heat exchanger, wherein an air conditioner host is transversely arranged in the equipment platform, and an air outlet of an air exhaust cavity is arranged on the same side as an air inlet of the air conditioner host; the air exhaust area on the outer vertical surface corresponds to the air outlet of the air conditioner host, and the air inlet area on the outer vertical surface corresponds to the air inlet of the air conditioner host; and a three-in-one channel for pedestrians, maintaining and setting copper pipes and cable bridges of the air conditioning system is formed between the backboard of the air conditioning host and the inner wall surface of the equipment platform. The utility model constructs an air path system of the external heat exchanger of the main machine of the short-circuit path low-resistance air conditioner with the inner part and the outer part melted; the power density of the equipment platform is improved, and the occupied area of the equipment platform is reduced; the transverse width of the outer vertical surface of the equipment platform occupied by the air inlet and outlet surface of the air conditioner main unit is reduced; the air conditioner main unit is convenient to detect and maintain.
Description
Technical Field
The utility model belongs to the technical field of green buildings and energy-saving air conditioners, and particularly relates to a corridor type equipment platform of an air conditioner host adopting a broken line type finned tube heat exchanger.
Background
The outer corridor type equipment platform refers to a certain floor of a high-rise building, and the effective area of the outer edge of the outer corridor type equipment platform is used for arrangement of equipment such as air conditioners. The external heat exchanger module of the prior commercial central air conditioner main machine is mainly configured by taking a finned tube heat exchanger and an ejector air axial flow fan as a standard.
The multi-split commercial central air conditioning host used in high-rise or super high-rise buildings is generally arranged in the corridor type equipment platform, so that the space and air energy resources of the equipment platform are utilized in a high-efficiency and intensive mode, the construction cost of the equipment platform is reduced, and meanwhile the high-efficiency utilization of the energy resources is realized.
The prior art (an equipment room (CN 215889470U) for placing an outdoor unit) discloses that a shutter and a wind scooper are additionally arranged in the equipment room, the shutter is arranged on a window, an air inlet of the wind scooper is connected with the outdoor unit, and an air outlet of the wind scooper is close to the shutter or is abutted to the shutter.
In summary, the structural relationship between the commercial central air conditioning host machine of the "upper air outlet" such as the existing multi-split air conditioner and air-cooled water machine module, and the air conditioning host machine and the outer corridor type equipment platform still has many technical problems, including:
firstly, the energy density of the air conditioner host equipment platform is low. Through multiple structural optimization and energy efficiency improvement, the calculated power density of the current air conditioner host machine according to the occupied area of the main body is more than 40 kw/square meter, and the power density of the current air conditioner host machine equipment platform is only 11.6 kw/square meter, namely the occupied area of an air conditioner host machine inlet and outlet air duct, a maintenance channel and a ventilation blind area on the platform is more than 2.4 times of the main body area of the air conditioner host machine; the floor area of the main unit equipment platform of the air conditioner is overlarge at present, which generally reaches more than 1.5% of the total area of the building, and the main unit equipment platform of the air conditioner becomes a prominent problem in the design of heating ventilation and air conditioning of the building.
Secondly, the equipment platform occupies the problem of overlarge transverse width of the outer vertical face of the building. The current air conditioner host and equipment platform have unreasonable wind field structure, low utilization rate of deep space and top space, and overlarge transverse width of building outer elevation occupied by the equipment platform; every 12 equipment floors, the periphery of which are occupied by air inlet and outlet openings of an air conditioner host machine. The width of the outer facade of the building is an important resource next to the building area in the index system of the building, the air conditioner host equipment platform in the high-rise super-high-rise building contends for the width resource of the outer facade of the building, and the transverse width of the outer facade is occupied to be too large, so that the visual communication between the inner space of the same-rise building and the external environment is blocked, and the method also has become an outstanding problem in the design of heating ventilation and air conditioning of the building.
Disclosure of Invention
In order to solve the problems in the prior art, the air conditioner main unit external heat exchanger is uniformly ventilated and exchanges heat under the pressure of the own atmospheric environment; the device platform is developed and utilized in a full-space zoning and ultra-high efficiency mode, and no dead zone and no dead angle are achieved; the utility model provides an outer corridor type equipment platform of an air conditioner host adopting a broken line type finned tube heat exchanger.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
an outer corridor type equipment platform of an air conditioner host adopting a broken line type finned tube heat exchanger, wherein at least 1 air conditioner host is transversely arranged in the equipment platform;
the equipment platform is provided with an outer vertical surface for ventilation, and an air inlet of the air conditioner host is close to the outer vertical surface; the exhaust outlet of the exhaust cavity is arranged and/or is close to the outer elevation; an air outlet of the air exhaust cavity is arranged on the same side as an air inlet of the air conditioner main unit;
the air exhaust area on the outer vertical surface corresponds to the air outlet of the air conditioner host, and the air inlet area on the outer vertical surface corresponds to the air inlet of the air conditioner host;
the air path of the heat exchanger of the air conditioner main unit is formed by connecting an internal air inlet, a heat exchanger, a negative pressure cavity, a fan, an exhaust cavity and an exhaust outlet in series; the outer elevation air inlet area, the air conditioner main unit heat exchanger air path and the outer elevation air exhaust area are connected in series to form an air channel inside the equipment platform; the utility model does not depend on the air supply and exhaust of the longitudinal air duct caused by the transverse interval between the air conditioner hosts, and the air duct is arranged in the air duct.
And a three-in-one channel for pedestrians, developing maintenance and arranging copper pipes and cable bridges of the air conditioning system is formed between the backboard of the air conditioning host and the inner wall surface of the equipment platform.
Further, the exhaust areas on the outer vertical surface are continuously arranged at the upper part of the outer vertical surface, and the air inlet areas on the outer vertical surface are continuously arranged at the middle lower part of the outer vertical surface;
preferably, the boundary between the exhaust area of the outer elevation and the air inlet area of the outer elevation is a horizontal straight line or the boundary is close to the horizontal straight line.
Further, the area of the exhaust area on the outer elevation is 25% -50% of the area of the outer elevation for ventilation.
Further, the outer edge concrete structure upright post of the equipment platform is a starting point transversely arranged on the air conditioner main machine; the inner space of the outer edge concrete structure upright post is a residence area and a buffer area which longitudinally and transversely move by the air conditioner main machine.
Further, the air conditioner main unit comprises a shell, a finned tube heat exchanger assembly, an air conditioner compressor, a gas-liquid separator and a fan;
the fin tube heat exchanger assembly consists of at least 2 flat plate type fin tube heat exchanger groups; or the V-shaped finned tube heat exchanger is formed by bending a flat plate type finned tube heat exchanger; or consists of a flat plate type finned tube heat exchanger and a V-shaped finned tube heat exchanger formed by bending the flat plate type finned tube heat exchanger; the section of the fin tube heat exchanger assembly perpendicular to the long sides of the fins is a broken line type;
the fin long sides of the flat plate type fin tube heat exchanger are arranged in the vertical direction or close to the vertical direction;
the fin tube heat exchanger assembly is arranged on the air inlet surface of the air inlet of the shell and forms a heat exchanger assembly negative pressure cavity communicated with the heat exchange air path with at least part of the shell.
Further, the section of the fin tube heat exchanger assembly perpendicular to the long sides of the fins is V-shaped or N-shaped, or at least 2 fin tube heat exchangers perpendicular to the long sides of the fins are continuously arranged to form the fin tube heat exchanger assembly; preferably, the section of the fin tube heat exchanger assembly perpendicular to the long sides of the fins is W-shaped; preferably, the apex angle alpha of the V-shaped fin tube heat exchanger is 15-110 degrees.
Preferably, the apex angle alpha of the V-shaped fin tube heat exchanger is 30-90 degrees.
Preferably, the apex angle alpha of the V-shaped fin tube heat exchanger is 30-60 degrees.
Further, the bottom plate, the side plate, the back plate, the top plate and the finned tube heat exchanger assembly of the shell are combined into a heat exchanger assembly negative pressure cavity; the finned tube heat exchanger assembly is a negative pressure cavity air inlet of the heat exchanger assembly;
preferably, an air outlet of the negative pressure cavity of the heat exchanger assembly is arranged on the back plate or the top plate;
preferably, an air outlet of a negative pressure cavity of the heat exchanger assembly is arranged on the top plate at a position far away from the fin tube heat exchanger assembly; and a fan is arranged at an air outlet of the negative pressure cavity of the heat exchanger assembly.
Further, an air outlet of the negative pressure cavity of the heat exchanger assembly is provided with an air exhaust cavity; preferably, the air outlet of the air exhaust cavity faces to the short side of the air conditioner main body shell.
Further, the lateral interval of the air conditioner main unit is 50-150 mm.
Further, at least 1 air supplementing notch communicated with the space below the bottom plate is arranged on the bottom plate at the air inlet of the shell, and the space below the bottom plate is communicated with the atmosphere outside the outer vertical face of the equipment platform and forms a bottom air inlet channel.
Further, the bottom of the shell is provided with an heightening bracket for installing the finned tube heat exchanger assembly;
the space expanded by the heightening bracket at the lower part of the finned tube heat exchanger assembly is communicated with the air supplementing notch to form a bottom air inlet channel of the air conditioner host.
Compared with the prior art, the utility model has the following remarkable beneficial effects:
aiming at the technical problems of low energy density of the air conditioner host and the equipment platform, overlarge transverse width of the outer vertical face of a building occupied by the equipment platform and the like, the utility model adopts a high-power density air conditioner host, innovates the wind field structure of the air conditioner host fin tube heat exchanger assembly, the relationship between a recombination fin tube heat exchanger wind path and the outer vertical face of the equipment platform and the relationship between the innovated air conditioner host and the equipment platform to develop the idle low-efficiency space of the equipment platform, and creates the heavy-load equipment platform of the air conditioner host, and the innovated parts comprise:
(1) building an air path system of an external heat exchanger of an air conditioner host with internal and external communicated short-circuit path and low resistance
Aiming at the practical application scene that the net height of a central air conditioner host machine equipment platform exceeds 4m, the utility model establishes the pneumatic layout that the outer vertical surface of the equipment platform and the middle lower part of the air conditioner host machine are used for medium-speed air intake and top high-speed air exhaust, the air intake and the air outlet are arranged on the same side in the same direction, the air intake area is equal to 2:1, the air exhaust cavity with the air exhaust cross section area of about 1/2 of the air intake surface is arranged at the top of a negative pressure cavity of a heat exchanger assembly of the air conditioner host machine, and the air duct function of the idle space at the top of the equipment platform is developed.
According to the utility model, under the design concept that the area of the air exhaust area on the outer elevation of the equipment platform is 25% -50% of the area of the outer elevation for ventilation, the air exhaust speed of the air exhaust area of the outer elevation reaches more than 2 times of the air inlet speed of the air inlet area of the outer elevation, and the air exhaust dynamic pressure head reaches more than 4 times of the air inlet dynamic pressure head, so that the air exhaust speed and kinetic energy of the fin tube heat exchanger assembly of the air conditioner host machine are effectively improved, and the range and diffusion dilution effect of the air exhaust penetrating the outer elevation of the equipment platform into the ambient atmosphere are effectively improved.
The main section of the air inlet channel exhaust channel of the air conditioner host finned tube heat exchanger assembly is taken into the air conditioner host, the air outlet air inlet of the air conditioner host is arranged on the outer vertical surface of the equipment platform in the same direction, on the same side and up and down, and a short-path low-resistance air conditioner host external heat exchanger air path system with internal and external melting is constructed.
(2) Device platform occupation area for improving power density of device platform
The air conditioner host machine adopted by the utility model takes the flat-plate type finned tube heat exchanger and the V-shaped finned tube heat exchanger formed by bending the flat-plate type finned tubes as basic units of the air conditioner host machine finned tube heat exchanger assembly. In the limited space of the air conditioner host, the finned tube heat exchanger assembly is continuously arranged, a large-area heat exchanger ventilation surface is unfolded, and a large-area fin heat transfer surface is secondarily unfolded on the large-area heat exchanger ventilation surface, so that the total fin heat exchange area S of the air conditioner host finned tube heat exchanger assembly is effectively enlarged, the heat transfer temperature difference delta T of the heat exchanger body is reduced, the evaporation pressure is increased, the condensation pressure is reduced, and the air conditioner host with the characteristic of heavy load is constructed.
The utility model is based on an air conditioner host with heavy load characteristics, innovates through an equipment platform layout mode, and a heat exchanger fresh air channel is arranged in the air conditioner host, so that an exhaust air channel function of an idle space at the top of the equipment platform is developed, and the transverse interval between the air conditioner hosts is compressed.
The three-in-one channels such as a pedestrian passageway, a maintenance passageway and a copper pipe cable bridge are used for greatly compressing the occupied area of an ineffective low-efficiency space and a ventilation blind area on the equipment platform, the average refrigerating and heating power density (namely the refrigerating capacity and heating capacity in unit area) of the equipment platform is greatly improved from the current situation of 11.6 kw/square meter to more than 25 kw/square meter, the improvement is more than 100%, and the area of the equipment platform is saved by more than 1/2 under the same refrigerating and heating load.
(3) Lateral width of outer vertical face of equipment platform occupied by air inlet and outlet face of air conditioner main unit
The width of the outer vertical face of the building is an important resource next to the building area in the building index system, and the current situation that the air inlet and outlet face of the air conditioner host occupies the lateral width of the outer vertical face of the platform of the building equipment is overlarge, so that ventilation, lighting and visual communication between the inner space of the same-layer building and the external environment are blocked, and the method has become an outstanding problem in the design of the building heating, ventilation and air conditioning.
According to the utility model, through the air inlet and outlet paths of the fin tube heat exchanger assembly of the air conditioner host, the power density of the air conditioner host is improved, and the space structure relation of the air conditioner host and the equipment platform is greatly reduced, so that the occupied area of the equipment platform is greatly reduced under the same building heat load condition, the transverse width of the outer vertical surface of the equipment platform occupied by the air inlet and outlet surfaces of the air conditioner host is greatly reduced, ventilation lighting and visual communication between the inner space of the same-layer building and the external environment are ensured, and the influence of the air conditioner host on the equipment platform on the vibration noise and the like of the working environment is furthest reduced.
(4) Convenient air conditioner main machine detection maintenance
The air conditioner main unit adopted by the utility model is characterized in that fluorine circuit components such as a compressor, a gas-liquid separator, a four-way valve, an expansion valve, an electric box, a fan and the like are intensively arranged in a negative pressure cavity of a heat exchanger assembly;
according to the utility model, the spatial structure relation between the air conditioner host and the equipment platform is recombined, and the back plate of the negative pressure cavity of the external heat exchanger of the air conditioner host faces the three-in-one channel on the inner side of the equipment platform during installation, so that the air conditioner host is convenient to check and maintain. When the air conditioner main unit has faults, the backboard of the air conditioner main unit is opened on the maintenance channel at the inner side of the equipment platform, and the compressor, the gas-liquid separator, the four-way valve, the expansion valve, the electric box, the fan and other fluorine circuit components which possibly have faults are completely contained, so that the inspection and maintenance are very convenient.
According to the utility model, as the plurality of V-shaped openings which are arranged on the bottom plate of the main machine of the air conditioner and are matched with the bottom structure of the finned tube heat exchanger assembly are adopted, fresh air is supplemented to the middle and lower finned tubes of the finned plate heat exchanger through the space below the bottom plate which is communicated with the atmosphere environment outside the outer vertical face of the equipment platform, the ventilation and heat exchange effect of the middle and lower finned tubes of the finned plate heat exchanger is improved, and the problem of vertical non-uniformity of 'strong up and weak down' of ventilation and heat exchange of the outer heat exchanger of the main machine of the traditional top-outlet air conditioner is solved.
Drawings
FIG. 1 is a schematic view of the vertical structure of an air conditioning host equipment platform;
FIG. 2 is a schematic top view of an air conditioner host equipment platform;
FIG. 3 is a schematic diagram of the operational airflow of an air conditioning host equipment platform;
fig. 4 is a schematic perspective view of an air conditioner host according to embodiment 1;
fig. 5 is a vertical sectional view of the structure of the air conditioning main unit of embodiment 1;
FIG. 6 is a schematic diagram of the air flow of the air conditioner host according to embodiment 1;
fig. 7 is a side view of the air conditioner main unit of embodiment 1;
FIG. 8 is a 3 horizontal cross-sectional view of FIG. 7;
FIG. 9 is a schematic view of a three-dimensional structure of a horizontal V-shaped finned tube heat exchanger;
FIG. 10 is a schematic view of a three-dimensional structure of a horizontal V-shaped finned tube heat exchanger assembly;
FIG. 11 is a horizontal cross-sectional view of a "fin planer" at the fin gap inlet to intercept the flow of air intake air during operation of the air conditioner main unit, and to reduce the speed of the air intake air during echelon planing and then discharge the air after heat exchange in the fin gap;
FIG. 12 is a top view of a central air conditioning host equipment platform section between building construction columns of example 2;
FIG. 13 is a schematic diagram of the operation of the air duct of the platform section of the central air conditioning host machine between the building construction columns of example 2;
fig. 14 is a schematic perspective view of an air conditioner main unit in which a bottom air supply channel is vacated by lifting a heat exchanger according to embodiment 3;
FIG. 15 is a schematic top view of a heat exchanger of example 3 raised to free a bottom air make-up channel of an air conditioner;
FIG. 16 is a vertical cross-sectional view of the operating airflow of the air conditioning host with the heat exchanger of example 3 lifted out of the bottom make-up channel;
FIG. 17 is a schematic diagram of the relationship between the intake and exhaust areas on the exterior of the platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, based on the described embodiments, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
In the description of the present utility model, it should be understood that the terms "transverse," "longitudinal," "length," "upper," "lower," "left," "right," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Definition: the outer facade of the corridor type equipment platform is set to be longitudinal, and the outer facade of the corridor type equipment platform is set to be transverse.
Example 1
1-3, an air conditioner host machine equipment platform is provided, wherein an air conditioner host machine is transversely arranged in the equipment platform 1;
the equipment platform is provided with an outer vertical face 1 for ventilation, and an air inlet 125 of the air conditioner host is close to the outer vertical face 1; the air outlet 331 of the air exhaust cavity 33 is close to the outer vertical surface 1; the air outlet 331 of the air outlet chamber 33 is arranged on the same side as the air inlet 125 of the air conditioner main unit. The air outlet 331 of the air discharge chamber 33 faces the short side of the air conditioner main body case.
The air exhaust area on the outer vertical surface 1 corresponds to the air outlet 331 of the air conditioner host, and the air inlet area on the outer vertical surface corresponds to the air inlet 125 of the air conditioner host.
The air inlet area, the air inlet 125, the negative pressure cavity 124 of the air conditioner host, the air exhaust cavity 33, the air outlet 331 and the air exhaust area form an air channel inside the equipment platform;
and a three-in-one channel 51 for pedestrians, maintenance and setting up copper pipes and cable bridges of the air conditioning system is formed between the backboard 39 of the air conditioning host and the inner wall surface 2 of the equipment platform.
The refrigerant connecting pipe 81 or the chilled water connecting pipe is arranged on the bridge frame 8, the air conditioning host module is communicated with the air conditioning indoor units or the fan coils in all areas of all floors of the building through the refrigerant connecting pipe 81 or the chilled water connecting pipe, and the air conditioning host module and the indoor units/the fan coils jointly operate to refrigerate (heat) the indoor space of the building.
The exhaust areas on the outer vertical surface 1 are continuously arranged at the upper part of the outer vertical surface, and the air inlet areas on the outer vertical surface 1 are continuously arranged at the middle lower part of the outer vertical surface;
the boundary between the exhaust area of the facade 1 and the air inlet area of the facade is a horizontal straight line or the boundary is close to the horizontal straight line.
The area of the exhaust area on the outer vertical surface 1 is 25% -50% of the area of the outer vertical surface for ventilation.
As shown in fig. 4 to 8, the air conditioning main unit of the present embodiment includes a housing, a finned tube heat exchanger assembly, an air conditioning compressor 121, a gas-liquid separator 126, and a fan 38;
the finned tube heat exchanger assembly is arranged on the air inlet surface of the air inlet 125 of the shell and forms a heat exchanger assembly negative pressure cavity 124 communicated with the heat exchange air path with part of the shell.
Specifically, the bottom plate, side plates, back plate, top plate and finned tube heat exchanger assembly of the housing are combined into a heat exchanger assembly negative pressure cavity 124; the finned tube heat exchanger assembly is an air inlet of a negative pressure cavity 124 of the heat exchanger assembly;
an air outlet of the heat exchanger assembly negative pressure cavity 124 is arranged on the top plate at a position far away from the fin tube heat exchanger assembly; the air outlet of the heat exchanger assembly negative pressure chamber 124 is provided with a fan 38.
An air outlet of the negative pressure cavity of the heat exchanger assembly is provided with an air exhaust cavity 33.
The fan 38 is an axial flow fan.
The area, adjacent to the back plate, of the bottom plate below the air outlet of the negative pressure cavity 124 of the heat exchanger assembly is a ventilation blind area; fluorine circuit components including an air conditioning compressor 121, a gas-liquid separator 126, a four-way valve, an expansion valve, an electrical box, etc. are disposed in a ventilation dead zone inside the heat exchanger assembly negative pressure chamber 124.
The side plate of the air inlet 125 of the shell is also provided with a plurality of through holes 138 for air inlet of the finned tube heat exchanger; the through holes 138 and the air inlets 125 of the shell form an air inlet channel of the finned tube heat exchanger assembly.
As shown in fig. 9 to 11, as a specific embodiment, the fin tube heat exchanger assembly of the present example is composed of 4 flat plate type fin tube heat exchangers 37; or 2 fin tube heat exchangers 40 with V-shaped cross sections perpendicular to the long sides of the fins are arranged continuously. The V-type fin tube heat exchanger 40 is composed of 2 flat plate type fin tube heat exchangers 37.
As shown in fig. 3, the flat plate type fin tube heat exchanger includes a fin plate 110 and heat exchange tubes 115; a plurality of fin plates 110 parallel to each other and spaced apart from each other by a certain interval to form a fin group; passes through the heat exchange tubes 115 in a direction perpendicular to the plane of the fin plate 110.
The section of the fin tube heat exchanger assembly perpendicular to the long sides of the fins is of a fold line type, more specifically, of a W type;
the fin long sides of the flat plate-type fin tube heat exchanger 37 are disposed in the vertical direction or in the nearly vertical direction.
The vertex angle alpha of the V-shaped fin tube heat exchanger is 15-110 degrees.
As an alternative embodiment, the V-fin tube heat exchanger has a top angle α of 30 ° to 90 °.
As an alternative embodiment, the V-fin tube heat exchanger has a top angle α of 30 ° to 60 °.
As shown in fig. 3, one side of the section of the fin-tube heat exchanger assembly perpendicular to the long sides of the fins is a heat exchanger air inlet surface, and the other side is a heat exchanger air outlet surface; the air outlet surface belongs to the negative pressure cavity area of the heat exchanger assembly.
The incidence surface of the air inlet flow is each flat plate type finned tube heat exchanger in the finned tube heat exchanger assembly, and the intersection angle of the air inlet flow and the tip of each fin plate 110 on each flat plate type finned tube heat exchanger 37 is an obtuse angle beta; the obtuse angle beta is 97.5-145 degrees; the incoming air stream impinges the tips of each of the fin plates 110 in the fin tube heat exchanger assembly at an obtuse angle β and is reflected by the fin tips into the fin gaps to flow to the heat exchanger assembly negative pressure cavity.
The flow rate of the air flow entering each fin gap d is equal to the air inlet flow intercepted by the vertical distance delta between the tips of the front fin plate and the rear fin plate of the flat plate type fin tube heat exchanger in the fin tube heat exchanger assembly on the air inlet section;
delta = d.sin alpha/2, where alpha is the apex angle of the V-type finned tube heat exchanger;
the vertical distance delta value of the tips of the front fin plate and the rear fin plate of the flat plate type fin tube heat exchanger on the air inlet section is 0.13 d-0.7 d.
As a specific embodiment, the air flow speed of the fin gap is 1/3 of the air inlet speed, and the incidence obtuse angle beta corresponding to the vertex angle alpha of the V-shaped fin tube heat exchanger is 39 degrees and 109.5 degrees.
The core targets of the main machine optimization of the refrigeration (heat pump) air conditioner under different application scenes are still that the condensation pressure is reduced and the evaporation pressure is increased: the refrigeration condensing pressure is reduced, so that the compression work of the compressor can be directly reduced; and the heating evaporation pressure (evaporation temperature) of the heat pump is increased, namely the circulation quantity of the refrigerant is increased, the heat absorption capacity of the evaporator is increased, the heat release capacity of the condenser is increased, the compression ratio is reduced, and the exhaust temperature of the compressor is reduced.
The present embodiment innovatively takes the evaporation pressure (evaporation temperature) as the first factor of the refrigerating and air-conditioning system, because the evaporation pressure determines the density of the low-pressure refrigerant gas sucked by the compressor and the compression ratio of the compressor, if the evaporation pressure of the heat exchanger (evaporator) outside the heat pump air-conditioning main unit is increased from 5 kg to 6 kg in winter, the system refrigerant circulation amount, the heat absorption amount of the evaporator, the heat release amount of the condenser must be increased by 20% simultaneously, and the compression ratio of the compressor, the exhaust temperature of the compressor should also fall.
The embodiment innovatively analyzes the relation Q=KxSx% delta t between the heat exchange quantity Q and the total heat transfer coefficient K, the heat exchange area S and the heat transfer temperature difference delta t between the refrigerant and the air of the finned tube heat exchanger such as the air conditioner evaporator condenser, and provides the technical judgment of increasing the total heat transfer area S of the finned tube heat exchanger for improving the evaporation pressure of the current air conditioner host, reducing the condensation pressure, improving the heat exchange capacity Q of the external heat exchanger of the air conditioner host and the COP of the refrigeration air conditioner system.
The embodiment not only increases the heat exchange capacity of the heat exchanger but also improves the performance of the refrigeration and air-conditioning system by enlarging the heat exchange area of the evaporator/condenser. The heat exchange area is enlarged, the heat exchange temperature difference is reduced, and the heat exchange device is not only an objective requirement for iterative upgrade of the heat exchanger, but also a core requirement for iterative upgrade of a large refrigerating air conditioner system constructed by the heat exchanger.
As shown in fig. 4, the difference between the condensing temperature and the evaporating temperature (T 2 -t 2 ) Is the fundamental factor for determining the COP of the core index of the refrigeration and air-conditioning system, this (T 2 -t 2 ) High then the COP is low, this (T 2 -t 2 ) The COP is high when the COP is low, and the difference between the COP of the refrigeration and air-conditioning system and the evaporating temperature of the condensing temperature (T 2 -t 2 ) Inverse correlation; and the difference between the condensing temperature and the evaporating temperature (T 2 -t 2 ) And the heat transfer temperature difference (T) 2 -T 1 ) Low temperature heat source temperature difference (T) 1 -t 1 ) Heat transfer temperature difference (t) of evaporator body 1 -t 2 ) These 3 differences are accumulated. Therefore, the temperature difference of the low temperature heat source at the high temperature heat source (T 1 -t 1 ) As objective depositUnder the condition that the condition can not be changed, the utility model innovatively reduces the heat transfer temperature difference (T) 2 -T 1 ) Heat transfer temperature difference (t) of evaporator body 1 -t 2 ) Is to reduce the difference (T) 2 -t 2 ) The only paths of the system are the only paths of reducing the condensation pressure (condensation temperature), increasing the evaporation temperature (evaporation pressure), increasing the circulation quantity of the refrigerant, increasing the heat absorption quantity of the evaporator, the heat release quantity of the condenser and increasing the COP of the refrigerating and air conditioning system.
When the finned tube heat exchanger assembly of the utility model operates, the microscopic process that air flows in and out of the fin gaps and flows at low speed in the fin gaps is the central link of the fin tube heat exchanger assembly in and out of the wind field.
At the section of the air inlet E-E, medium-speed air flow of about 4m/s flowing in from the outer vertical surface of the equipment platform is pushed to the section F-F of the fin gap inlet in a uniform laminar flow mode, the line of the air inlet air flow at the section F-F forms an obtuse angle beta with the fin at the rear side of the gap, and the fin at the rear side of the gap is used as a planer tool to 'plane' a piece of air flow from the air inlet main body air flow to be plugged into the fin gap; the main body air inlet airflow which is "shaved" is intercepted by the blade tip of the "fin shaver" at the F-F position, and the blade tip of the "fin shaver" at the back side of the gap is impacted by an obtuse angle beta, and is diffused and decelerated in the gap of the fins after being reflected by the fins at the front side of the gap; the air flow which is planed by the fin planing tool and is subjected to collision diffusion deceleration is pulled by negative pressure of the negative pressure cavity at about 1.6m/s, and flows out of the fin channels against the resistance of the fin clearance channels; the low-speed air flow reaching the G-G section of the fin gap outlet is accelerated again to a medium-speed air flow of about 4m/s under the negative pressure pulling of the negative pressure cavity, and is collected and discharged at the H-H section.
The air conditioner host equipment platform of the embodiment innovatively optimizes the wind field structure of the building equipment platform and the energy coupling characteristic of the air conditioner host and the equipment platform from the thermodynamic fluid mechanics.
In the application scene conversion, the machine position of an air conditioner host is replaced by a semi-closed equipment platform under the condition of a building distributed energy system from an open-air platform; the air inlet and outlet field of the air conditioner host is converted into a semi-closed corridor with one side open from a classical hemispherical three-dimensional open space.
According to the air conditioner host equipment platform, aiming at the problems that the energy density of an air conditioner host and the equipment platform is low, the equipment platform occupies too large transverse width of an outer elevation of a building, and the like, on the basis of the air conditioner host structure and the outer heat exchanger air path, the spatial relationship between the air conditioner host and the equipment platform is recombined, the outer elevation relationship between the outer heat exchanger air path and the equipment platform is recombined, and the air conditioner host equipment platform has the following innovation points:
(1) air conditioner host adopting high power density
The air conditioner host machine adopted in the embodiment is provided with an air inlet and an air outlet on the same side, and is arranged up and down, and has pneumatic layout of medium-speed air inlet at the middle and lower parts and high-speed air exhaust at the top of the same side.
In the embodiment, the horizontal V-shaped fin tube heat exchanger is used as a basic unit of the fin tube heat exchanger assembly, the fin tube heat exchanger assembly is continuously arranged in a limited space of an air conditioner host in parallel to the air inlet surface direction of an air inlet of the air conditioner host, a large-area ventilation surface of the fin tube heat exchanger assembly is obtained by expanding the air inlet surfaces of a plurality of horizontal V-shaped fin tube heat exchangers, and a large-area fin heat transfer surface is obtained by expanding the ventilation surface of the large-area fin tube heat exchanger assembly for the second time, so that the total fin heat exchange area S of the fin tube heat exchanger assembly of the air conditioner host is effectively enlarged, the heat transfer temperature difference T of a heat exchanger body is reduced, the evaporating pressure is improved, the condensing pressure is reduced, and the heavy-load source platform of the heavy-load equipment of the embodiment has the characteristics of high power density.
The air conditioner host body that this embodiment adopted sets up 1 heat exchanger assembly negative pressure chamber, and heat exchanger assembly negative pressure chamber is formed by bottom plate, curb plate, backplate, fin pipe outer heat exchanger and roof combination. An air outlet of a negative pressure cavity of the heat exchanger assembly is arranged on the top plate at a position far away from the transversely continuously arranged V-shaped finned tube heat exchanger, and a fan is arranged at the air outlet; the V-shaped finned tube heat exchangers which are transversely and continuously arranged are air inlets of a negative pressure cavity of the heat exchanger assembly; an exhaust cavity is arranged above a top plate of the negative pressure cavity of the heat exchanger assembly, and an air inlet of the exhaust cavity is communicated with an air outlet of the negative pressure cavity of the heat exchanger assembly.
A ventilation blind area is arranged below an air outlet of the negative pressure cavity of the heat exchanger assembly and adjacent to one side of the back plate, and fluorine circuit components such as an air conditioner host compressor, a four-way valve, an expansion valve, an electric box and the like are arranged in the ventilation blind area.
The ratio of the cooling capacity of the air conditioner host to the floor area of the air conditioner host body is defined as the power density of the air conditioner host body, and the air conditioner host adopted in the embodiment has the characteristic of high power density.
(2) Innovative air inlet and outlet field of air conditioner main unit finned tube heat exchanger assembly, and air path and equipment platform outer elevation relation of air conditioner main unit finned tube heat exchanger assembly
As shown in fig. 17, the air path of the heat exchanger of the air conditioner main unit is formed by connecting an internal air inlet, a heat exchanger, a negative pressure cavity, a fan, an air exhaust cavity and an air outlet in series; the outer elevation air inlet area, the air conditioner main unit heat exchanger air path and the outer elevation air exhaust area are connected in series to form an air channel inside the equipment platform; the utility model does not depend on the air supply and exhaust of the longitudinal air duct caused by the transverse interval between the air conditioner hosts, and the air duct is arranged in the air duct.
The air conditioner host machine adopted in the embodiment utilizes the idle space at the top of the equipment platform to set an air conditioner host machine exhaust cavity; the air outlet of the air exhaust cavity of the air conditioner host is arranged on the same side as the air inlet of the air inlet channel, and the area of the air outlet is obviously smaller than that of the air inlet.
The air conditioner host machine adopted in the embodiment establishes an air inlet and outlet field of the air conditioner host machine finned tube heat exchanger assembly through fan operation:
the air in the negative pressure cavity of the fan pump drainage heat exchanger assembly generates negative pressure in the cavity, and ambient air is pulled to enter the air conditioner main unit from the air inlet of the air conditioner main unit at medium speed; the medium-speed air inlet flow entering the air conditioner main unit disperses and decelerates under the gradient planing of the fin planing blades, flows through the fin gaps of the V-shaped finned tube heat exchanger at a low speed to finish heat exchange, then enters the negative pressure cavity of the heat exchanger assembly, is further pulled and converged by the negative pressure, accelerates the air inlet of the fan with the lowest inflow pressure, is finally sucked and boosted by the fan, and passes through the air exhaust cavity to be discharged to an outer elevation at a high speed.
The main section of the air inlet channel and the air outlet channel of the finned tube heat exchanger assembly is taken into the air conditioner main unit.
In the embodiment, on the equipment platform, a single-row air conditioner host is transversely adjacently arranged, the air inlet channel of the air conditioner host directly introduces fresh air from the outer vertical surface of the equipment platform, and the air inlet and air supply channel of the rear air conditioner host bypassing the front air conditioner host in the double-row air conditioner host setting scheme of the traditional equipment platform is cancelled. The air-conditioning main unit exhaust adopts an upper air-out mode, and the air-out of the finned tube heat exchanger assembly directly discharges the environmental atmosphere outside the outer vertical surface of the equipment platform;
in the embodiment, the air path of the heat exchanger of the air conditioner host and the outer elevation relation of the equipment platform are recombined by using the shortest side entry and side exit path.
(3) Innovative air conditioner host and equipment platform structural relationship, and development of idle low-efficiency space of equipment platform
In the embodiment, an air exhaust cavity is arranged above a top plate of an air conditioner host, and an inefficient space is left at the top of an equipment platform;
the embodiment compresses the air conditioner hosts to about 100mm at a transverse interval, and only the air conditioner hosts can be longitudinally pulled out or longitudinally fed in.
In the embodiment, a three-in-one channel for people to carry out maintenance and arranging copper pipes and cable bridges of an air conditioning system is arranged between the inner wall surface of the equipment platform and the transversely arranged air conditioning host. And a bridge for arranging copper pipes connected with an inner machine and an outer machine of an air conditioning system and a bridge for arranging power cables and signal wires of an air conditioning host are arranged above the channel, so that three-in-one of the pedestrian maintenance bridge is realized.
According to the embodiment, the structural relation between the air conditioner host and the equipment platform is innovated, the idle low-efficiency space of the equipment platform is fully developed and utilized by arranging the exhaust cavity of the air conditioner host at the top of the equipment platform, compressing the transverse interval of adjacent air conditioner hosts and realizing three-in-one of a pedestrian passageway maintenance passageway bridge passageway.
Example 2
As shown in fig. 12-13, the air conditioner host device platform of the present embodiment is similar to embodiment 1, and further, in the air conditioner host device platform of the present embodiment, the outer edge concrete structure upright posts 140 are the starting points of the air conditioner host device that are laterally arranged.
The inner space 5 of the outer edge concrete structure upright column 140 is a residence area and a buffer area for the air conditioner host to longitudinally and transversely move.
According to the embodiment, the inner side space 5 of the outer edge concrete structure upright post 140 is used as a residence area and a buffer area of the air conditioner hosts, so that sequential movement of a plurality of air conditioner hosts is realized, longitudinal and transverse large-scale movement of a single air conditioner host under a specific functional target is realized, and installation, maintenance and the like are facilitated.
Example 3
As shown in fig. 14-16, the air conditioner host platform of the present embodiment is similar to embodiment 1, further, the air conditioner host of the present embodiment has 2 air supplementing slots 141 on the bottom plate at the air inlet 125 of the housing, which communicate with the space below the bottom plate, and the space below the bottom plate communicates with the outside atmosphere environment of the outer vertical surface 1 of the equipment platform, and forms the bottom air inlet channel 135.
The bottom of the shell is provided with a heightening bracket 136 for installing the fin tube heat exchanger assembly;
the space expanded by the heightening bracket 136 at the lower part of the finned tube heat exchanger assembly is communicated with the air supplementing notch 141 to form a bottom air inlet channel 135 of the air conditioner host.
According to the embodiment, due to the adoption of the plurality of V-shaped openings which are formed in the bottom plate of the air conditioner main unit and are matched with the bottom structure of the finned tube heat exchanger assembly, fresh air is supplemented to the middle-lower finned tube of the finned plate heat exchanger through the space below the bottom plate, which is communicated with the atmospheric environment outside the outer vertical face of the equipment platform, of the finned plate heat exchanger, the ventilation and heat exchange effect of the middle-lower finned tube of the finned plate heat exchanger is improved, and the problem of vertical non-uniformity of 'strong up and weak down' of ventilation and heat exchange of the traditional outer heat exchanger of the top-outlet air conditioner main unit is solved.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (15)
1. A kind of outer corridor type apparatus platform which adopts the heat exchanger air conditioner host computer of the broken line type finned tube, characterized by that, set up at least 1 and empty and regulate the host computer in the apparatus platform along the horizontal direction;
the equipment platform is provided with an outer vertical surface for ventilation, and an air inlet of the air conditioner host is close to the outer vertical surface; the exhaust outlet of the exhaust cavity is arranged and/or is close to the outer elevation; an air outlet of the air exhaust cavity is arranged on the same side as an air inlet of the air conditioner main unit;
the air exhaust area on the outer vertical surface corresponds to the air outlet of the air conditioner host, and the air inlet area on the outer vertical surface corresponds to the air inlet of the air conditioner host;
the air path of the air conditioner main machine heat exchanger consists of an air inlet, a finned tube heat exchanger, a negative pressure cavity, a fan, an exhaust cavity and an exhaust outlet which are connected in series; the outer elevation air inlet area, the air conditioner main unit heat exchanger air path and the outer elevation air exhaust area are connected in series to form an air channel inside the equipment platform;
and a three-in-one channel for pedestrians, developing maintenance and arranging copper pipes and cable bridges of the air conditioning system is formed between the backboard of the air conditioning host and the inner wall surface of the equipment platform.
2. The gallery type equipment platform for an air conditioner host machine employing a folded-line type finned tube heat exchanger according to claim 1, wherein the exhaust areas on the outer vertical surface are continuously arranged at the upper part of the outer vertical surface, and the inlet areas on the outer vertical surface are continuously arranged at the middle lower part of the outer vertical surface.
3. The gallery type equipment platform for an air conditioner main unit employing a folded-line type finned tube heat exchanger according to claim 1, wherein the exhaust area of the outer elevation and the inlet area of the outer elevation are divided into a horizontal straight line or a dividing line close to the horizontal straight line.
4. The gallery type equipment platform for an air conditioning host machine employing a folded-line type finned tube heat exchanger according to claim 1, wherein the area of the exhaust area on the outer vertical surface is 25% -50% of the area of the outer vertical surface for ventilation.
5. The outer corridor type equipment platform adopting the folded line type finned tube heat exchanger air conditioner host machine according to claim 1, wherein outer edge concrete structure upright posts of the equipment platform are starting points transversely arranged on the air conditioner host machine; the inner space of the outer edge concrete structure upright post is a residence area and a buffer area which longitudinally and transversely move by the air conditioner main machine.
6. The outer corridor type equipment platform of the air conditioner main unit adopting the folded line type finned tube heat exchanger as claimed in claim 1, wherein,
the air conditioner main unit comprises a shell, a finned tube heat exchanger assembly, an air conditioner compressor, a gas-liquid separator and a fan; the gas-liquid separator, the air conditioner compressor, the four-way valve, the finned tube heat exchanger assembly, the expansion valve and the refrigerant pipeline of the air conditioner indoor unit are sequentially communicated to form a refrigerant circulation loop of the air conditioner system;
the fin tube heat exchanger assembly consists of at least 2 flat plate type fin tube heat exchangers; or the V-shaped finned tube heat exchanger is formed by bending a flat plate type finned tube heat exchanger; or consists of a flat plate type finned tube heat exchanger and a V-shaped finned tube heat exchanger formed by bending the flat plate type finned tube heat exchanger; the section of the fin tube heat exchanger assembly perpendicular to the long sides of the fins is a broken line type;
the fin long sides of the flat plate type fin tube heat exchanger are arranged in the vertical direction or close to the vertical direction;
the fin tube heat exchanger assembly is arranged on the air inlet surface of the air inlet of the shell and forms a heat exchanger assembly negative pressure cavity communicated with the heat exchange air path with at least part of the shell.
7. The gallery type equipment platform for an air conditioner main unit employing a folded line type finned tube heat exchanger according to claim 6, wherein the cross section of the finned tube heat exchanger assembly perpendicular to the long sides of the fins is V-shaped, N-shaped or is formed by continuously arranging at least 2 finned tube heat exchangers perpendicular to the long sides of the fins in V-shaped cross sections.
8. The alien equipment platform for an air conditioner main unit employing a folded-line type finned tube heat exchanger according to claim 6, wherein the cross section of the finned tube heat exchanger assembly perpendicular to the long sides of the fins is W-shaped.
9. The gallery type equipment platform for an air conditioner main unit employing a folded-line type finned tube heat exchanger according to claim 6, wherein the V-type finned tube heat exchanger has a top angle α of 15 ° to 110 °.
10. The outer gallery type equipment platform of an air conditioner host machine adopting a folded line type finned tube heat exchanger according to claim 6, wherein the bottom plate, the side plate, the back plate, the top plate and the finned tube heat exchanger assembly of the shell are combined into a heat exchanger assembly negative pressure cavity; the finned tube heat exchanger assembly is a negative pressure cavity air inlet of the heat exchanger assembly.
11. The outer corridor type equipment platform for the air conditioner host adopting the folded line type finned tube heat exchanger, as claimed in claim 10, is characterized in that an air outlet of a negative pressure cavity of the heat exchanger assembly is arranged on the top plate at a position far away from the finned tube heat exchanger assembly; and a fan is arranged at an air outlet of the negative pressure cavity of the heat exchanger assembly.
12. The gallery type equipment platform for an air conditioner host machine adopting a folded-line type finned tube heat exchanger according to claim 10, wherein an air outlet of the negative pressure cavity of the heat exchanger assembly is provided with an air exhaust cavity.
13. The alien equipment platform for an air conditioner main unit employing a folded-line type finned tube heat exchanger according to claim 10, wherein the air outlet of the air discharging chamber is directed toward a short side of the air conditioner main unit case.
14. The outer corridor type equipment platform of the air conditioner main unit adopting the folded line type finned tube heat exchanger as claimed in claim 6, wherein,
the bottom plate at the air inlet of the shell is provided with at least 1 air supplementing notch communicated with the space below the bottom plate, and the space below the bottom plate is communicated with the atmosphere outside the outer vertical face of the equipment platform and forms a bottom air inlet channel (135).
15. The alien equipment platform for an air conditioner host employing a zigzag type finned tube heat exchanger according to claim 14,
the bottom of the shell is provided with an heightening bracket for installing the finned tube heat exchanger assembly;
the space expanded by the heightening bracket at the lower part of the fin tube heat exchanger assembly is communicated with the air supplementing notch to form a bottom air inlet channel (135) of the air conditioner host.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321205854.4U CN219889664U (en) | 2023-05-18 | 2023-05-18 | Outer corridor type equipment platform adopting zigzag type finned tube heat exchanger air conditioner host |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321205854.4U CN219889664U (en) | 2023-05-18 | 2023-05-18 | Outer corridor type equipment platform adopting zigzag type finned tube heat exchanger air conditioner host |
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| CN219889664U true CN219889664U (en) | 2023-10-24 |
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| CN202321205854.4U Active CN219889664U (en) | 2023-05-18 | 2023-05-18 | Outer corridor type equipment platform adopting zigzag type finned tube heat exchanger air conditioner host |
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| CN (1) | CN219889664U (en) |
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- 2023-05-18 CN CN202321205854.4U patent/CN219889664U/en active Active
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