CN116839128A

CN116839128A - Main unit and equipment platform for fusing rear single-air-duct double-refrigerating system of fan

Info

Publication number: CN116839128A
Application number: CN202310999393.0A
Authority: CN
Inventors: 薛世山; 詹飞龙; 李成伟; 刘玉恩; 韦林林; 宗鹏鹏; 诸葛水明; 马骥; 王媛; 薛必远; 徐言先; 王恒; 熊爱莲; 周颖; 许光亚; 吴飞飞; 刘晓兰; 王庆伦
Original assignee: Guangzhou Wan'ermei Engineering Technology Co ltd
Current assignee: Guangzhou Wan'ermei Engineering Technology Co ltd
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2023-10-03

Abstract

The invention belongs to the technical field of building air conditioners, and discloses a fan rear-mounted single-air-duct double-refrigerating system fusion host machine which comprises a shell, at least 2 groups of refrigerant circulation systems and an exhaust cavity, wherein the shell is provided with a fan body; the refrigerant circulation systems of the 2 groups share one negative pressure cavity of the external heat exchanger; the negative pressure cavity of the outer heat exchanger consists of the outer heat exchanger, a part of shell and a backboard; the back plate is provided with an air outlet of the negative pressure cavity of the plurality of external heat exchangers, the air outlet is provided with a fan, the air outlet is communicated with the air exhaust cavity, and an air outlet of the air exhaust cavity is arranged on the same side of the air inlet of the shell. The invention constructs an outer heat exchanger assembly wind path of the blind window of the outer elevation of the low-resistance penetrating equipment platform; the structure of the external heat exchanger assembly is innovated, and the energy density of the fusion host body is improved. After heat exchange, air is restrained and induced by the flow guide plate sheet group in the lateral exhaust section, and is laterally and rapidly ejected to the outer space of the fusion host machine, so that exhaust air flow is prevented from flowing back to the platform of the host machine.

Description

Main unit and equipment platform for fusing rear single-air-duct double-refrigerating system of fan

Technical Field

The invention belongs to the technical field of building design, and particularly relates to a fan rear-mounted single-air-duct double-refrigerating system fusion host and an equipment platform.

Background

The heat of the air energy water heater is derived from air, the heat of the condenser of the air energy water heater is released, and the main body is the heat extracted from the air by the evaporator; the evaporator of the main machine of the water heater cannot effectively ventilate the ambient atmosphere, so that the air outlet of the evaporator is circularly short-circuited in the small space of the equipment platform, the temperature of the small space of the equipment platform is continuously reduced, and the evaporation pressure of the evaporator is further reduced, and the heating quantity is seriously attenuated; this phenomenon is more serious in low temperature seasons, and the heat pump main unit of the water heater is degenerated into an electric heating tube.

As shown in fig. 1, the pursuit of building designers, owners and society on the visual effect of the outer facade of the building causes the air conditioning host on the equipment platform to be hidden by the outer facade louver, and the classical air conditioning host entering from the back of the wind path and exiting from the front of the wind path is blocked to seriously attenuate the air exhaust and heat exchange performance of the atmosphere outside the building; the medium-speed exhaust (below 7 m/s) air conditioner host computer is hindered to the exhaust of the atmosphere environment outside the equipment platform, the static pressure of exhaust is increased, the exhaust speed is reduced, the air quantity is reduced, and a considerable part of air flow in the reduced exhaust air quantity is blocked by the shutter and returns to the equipment platform and is again inhaled by the external heat exchanger to cause air flow short circuit, so that the diffusion dilution effect of the exhaust penetrating through the shutter of the external elevation into the atmosphere environment is severely inhibited. The condensation pressure of the external heat exchanger is too high, the condensate is not enough in supercooling during the cooling operation in summer, the evaporation pressure of the external heat exchanger is too low, the circulation quantity of the refrigerant is greatly attenuated during the heating operation in winter, the task of the air conditioner serving as a heat carrier cannot be finished at full cost, and the performance of the air conditioner on an equipment platform is greatly reduced compared with laboratory data.

The two-carbon era comes, the popularization of the air energy water heater is greatly accelerated, and a household central air conditioner host and the air energy water heater become standard configurations on a fine room equipment platform in the eye; in summary, the classic household central air conditioner host and the air energy water heater in the early stage of the double carbon age have the following problems:

(1) performance attenuation of air energy water heater of air conditioning host on equipment platform

The air conditioning host and the air energy water heater host behind the outer facade shutter of the equipment platform are blocked from exhausting air to the atmosphere outside the building, the diffusion dilution effect of the air exhausted penetrating the outer facade shutter and entering the atmosphere is severely inhibited, so that the condensation pressure of the outer heat exchanger is too high, the condensate undercooling is insufficient when the air conditioning host is in refrigerating operation in summer, the evaporation pressure of the outer heat exchanger is too low, the circulation volume of the refrigerant is greatly attenuated when the air conditioning host is in heating operation in winter, the task of the air energy water heater of the air conditioner serving as a heat carrier cannot be completed at full scale, and the thermal performance of the air energy water heater of the air conditioning host on the equipment platform is greatly reduced compared with the laboratory data.

(2) Device resource reconfiguration

The air conditioner host and the air energy water heater host are vapor compression refrigeration equipment, the working principle is the same, the electromechanical structure is quite similar, and the air conditioner host and the air energy water heater host are a fluorine path system driven by a compressor, a condenser, a throttle valve and an evaporator, a fan and a water pump driven high-temperature heat source medium system and a low-temperature heat source medium system.

In a narrow equipment platform space, two sets of air-conditioning water heaters which are physically independent and have the same principle and similar structure are integrated with a host machine and heat pump water heating equipment, so that repeated allocation of refrigeration equipment resources is realized, and waste of the refrigeration equipment resources is realized.

(3) Device platform inefficiency and inefficiency area increase

In the two-carbon era, a household central air-conditioning host machine and an air energy water heater (comprising a host machine and a water tank) have become standard configurations on a residential equipment platform;

as the air conditioning host, the air energy water heater and other devices on the residential device platform are required to be distributed as independent units, an air inlet channel is reserved for the outer heat exchanger arranged on the rear side of the air conditioning host adopting the back-in front-out side air outlet channel structure, and an air inlet channel and an air outlet channel are reserved for the air energy water heater host evaporator, the distance among the central air conditioning host, the air energy water heater host, the water tank and other devices on the device platform is increased, and the ineffective low-efficiency area is increased.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a fan rear-mounted single-air-duct double-refrigerating system fusion host;

the dual refrigeration system of the present invention can be used for air conditioning, or for air energy water heater, or one system is used for air conditioning and the other system is used for air energy water heater.

The invention further aims to provide an equipment platform for assembling a fan-rear single-air-duct double-refrigerating system fusion host.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a fan rear single-air-duct double-refrigerating system fusion host comprises a shell, at least 2 groups of refrigerating agent circulating systems arranged in the shell and an exhaust cavity; the refrigerant cycle system includes an external heat exchanger and a compressor; the refrigerant circulation system shares an outer heat exchanger and an outer heat exchanger negative pressure cavity;

the negative pressure cavity of the outer heat exchanger consists of the outer heat exchanger, a part of shell and a back plate; the back plate is provided with a plurality of air outlets of the negative pressure cavities of the external heat exchangers, the air outlets are provided with fans, the air outlets are communicated with the air exhaust cavities, and the air outlets of the air exhaust cavities are arranged on the same side of the air inlet of the shell; the outer heat exchanger is an air inlet of a negative pressure cavity of the outer heat exchanger.

Further, the air outlet of the air exhaust cavity faces to the short side of the shell.

Further, the outer heat exchanger is a horizontal section V-shaped finned tube heat exchanger assembly or a zigzag fold line type finned tube heat exchanger assembly; the horizontal section V-shaped finned tube heat exchanger assembly comprises at least 2 flat plate type finned 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 cross section of the horizontal section V-shaped finned tube heat exchanger assembly perpendicular to the long sides of the fins is a folded line type.

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

Further, the cross section of the horizontal section V-shaped finned tube heat exchanger assembly vertical to the long sides of the fins is V-shaped or N-shaped, or the horizontal section V-shaped finned tube heat exchanger assembly is formed by continuously arranging at least 2 fin tube heat exchangers with the cross sections vertical to the long sides of the fins.

Preferably, the cross section of the horizontal cross section V-shaped finned tube heat exchanger assembly, which is 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, one side of the section of the outer heat exchanger 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 external heat exchanger.

Further, the incident surface of the air inlet flow is each flat plate type finned tube heat exchanger, and the intersection angle of the air inlet flow and the tip of each fin plate is an obtuse angle; the obtuse angle beta is 97.5-145 degrees; the air inlet flow hits the tip of each fin plate at an obtuse angle beta, and is reflected by the fin tip plate to enter the fin gap to flow to the negative pressure cavity of the external heat exchanger.

Further, 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 finned tube heat exchanger 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.

Preferably, 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.

Further, the flat plate type finned tube heat exchanger comprises a finned plate and a heat exchange tube; a plurality of fin plates which are parallel to each other and are separated by a certain interval form a fin group; heat exchange tubes are arranged in a penetrating manner along the direction perpendicular to the fin plates; at least 2 heat exchange tube groups penetrating through the fin plates are arranged in parallel along the short side direction of the fin plates; the heat exchange tubes in the heat exchange tube group are arranged along the long side direction of the fin plate; compressors connected to different refrigerant circulation systems are arranged in parallel and side by side with heat exchange tube groups; the fins between the heat exchange tube groups are continuous and complete, and fin heat bridges are formed in the transverse and vertical directions of the fins.

Further, the heat exchange tube groups in the same row are connected in parallel to the fluorine path pipeline of the same refrigeration system; or the relative positions of the heat exchange tubes of different heat exchange tube groups on the fin plates can be exchanged left and right, and are arranged in a crossed way.

Further, at least 2 groups of heat exchange tube groups penetrating through the fin plates are all heat exchange tube groups of the air conditioning system.

Further, at least 2 groups of heat exchange tube groups penetrate through the fin plates, and at least 1 group of heat exchange tube groups are air energy water heater heat exchange tube groups.

Further, the fin plate comprises at least 3 heat exchange tube groups for the air conditioning system, and the air energy water heater heat exchange tube groups are positioned between adjacent heat exchange tube groups for the air conditioning system.

Further, the zigzag broken line type finned tube heat exchanger assembly is formed by combining one or two of a plurality of flat plate type finned tube heat exchangers or V-shaped finned tube heat exchangers with a plurality of partition plates; the zigzag folding line type finned tube heat exchanger assembly is zigzag folding line type on a section perpendicular to the long side of the fin.

Preferably, the cross section of the zigzag folding line type finned tube heat exchanger assembly perpendicular to the long sides of the fins is of an N type, or the cross section perpendicular to the long sides of the fins is of a W type formed by a V type finned tube heat exchanger, a baffle plate and a flat plate type finned tube heat exchanger; or consists of a V-shaped finned tube heat exchanger, 2 baffles and 2 flat plate type finned tube heat exchangers.

Preferably, the included angle gamma between the baffle plate and the flat plate type finned tube heat exchanger is 0.5 alpha; the included angle epsilon between the baffle plate and the V-shaped finned tube heat exchanger is 0.5 alpha.

The heat exchange tubes of the zigzag folding line type finned tube heat exchanger assembly are parallel to the zigzag edges; the fin group of the fin tube heat exchanger is orthogonally sleeved on the heat exchange tube.

The zigzag fold line type finned tube heat exchanger assembly, the upper bottom plate, the lower bottom plate, the left side plate and the right side plate are combined into an outer heat exchanger negative pressure cavity.

The heat exchange tube is parallel or basically parallel with the upper bottom plate and the lower bottom plate and is in oblique relation with the left side plate and the right side plate.

The zigzag fold line type finned tube heat exchanger assembly divides a heat exchange air duct into a front cavity and a rear cavity, the front cavity is an air inlet cavity, the rear cavity is communicated with an air suction port of the fan set and is a negative pressure cavity of the external heat exchanger;

preferably, the heat exchange tube forms an obtuse angle with the side wall of the negative pressure cavity of the adjacent outer heat exchanger.

Further, the back plate is provided with at least 2 air outlets; a fan is arranged at each air outlet to form a fan wall; preferably, the fan adopts a centrifugal fan or an axial flow fan; further preferably, the centrifugal fan is a backward inclined outer rotor centrifugal fan.

Preferably, the back plate is provided with 2, 4 or 6 air outlets; and a fan is arranged at each air outlet to form a fan wall.

Further, the exhaust cavity is a cavity with a unidirectional air outlet and comprises a vertical exhaust cavity or consists of a vertical exhaust cavity and a transverse exhaust cavity which are mutually communicated; or consists of a vertical exhaust cavity and a lateral exhaust cavity which are communicated with each other; the transverse exhaust cavity is arranged below the bottom plate of the negative pressure cavity of the outer heat exchanger or above the top plate of the negative pressure cavity of the outer heat exchanger. The lateral exhaust cavity is arranged on the outer side of the negative pressure cavity side plate of the outer heat exchanger.

Further, an exhaust section is arranged at the air outlet. Further, a plurality of flow guide plates are arranged in the exhaust section; the air guide plate sheet is parallel to or nearly parallel to the shutter sheets, or the air guide plate sheet is vertically arranged and provided with an angle for guiding the exhaust air flow to deviate from the air conditioner host.

Further, a diving type exhaust section is arranged at the air outlet; a plurality of flow guide plates are arranged in the diving type exhaust section.

Further, an outer convex exhaust section is arranged at the air outlet; a plurality of flow guide plates are arranged in the convex exhaust section.

Further, a compressor cavity for placing a fluorine circuit component comprising a compressor, a gas-liquid separator, a four-way valve, an expansion valve and an electric box is arranged on the rear side of the back plate of the exhaust cavity or on the outer side of the negative pressure cavity wall plate of the outer heat exchanger.

Further, the air conditioner main unit is also provided with an intermediate heat exchanger, and two paths of heat exchange medium channels of the intermediate heat exchanger are respectively a refrigerant channel and an air conditioner water channel of the air conditioner main unit; the refrigerant channel is connected with a fluorine path of the air conditioner host; the air conditioner water channel is connected with an air conditioner indoor heat exchanger.

The utility model provides an equipment platform, two refrigerating system fuses host computer setting in outer corridor type equipment platform of fan rear-mounted list wind channel, the air outlet in chamber of airing exhaust is towards the outer facade of outer corridor type equipment platform.

Further, an exhaust section is arranged at the air outlet; the exhaust section is arranged adjacent to the outer vertical face shutter of the outer corridor type equipment platform.

Further, a diving type exhaust section is arranged at the air outlet; the diving type exhaust section is arranged adjacent to the outer vertical face shutter of the outer corridor type equipment platform; the deflector plates of the dive exhaust section are parallel or nearly parallel to the louver plates.

Further, an exhaust section is arranged at the air outlet; an opening structure matched with an exhaust section is arranged on the outer elevation shutter of the outer corridor type equipment platform; the exhaust section is embedded into the shutter opening structure.

Further, an outer convex exhaust section is arranged at the air outlet; an opening structure matched with the outer convex type exhaust section is arranged on the outer vertical surface shutter of the outer corridor type equipment platform; the exhaust section is embedded into the shutter opening structure.

Further, the opening structure of the shutter is rectangular, and the long side of the shutter is parallel to the bottom side or the side of the equipment platform.

Compared with the prior art, the invention has the following beneficial effects:

(1) building an air path of an external heat exchanger with high heat exchange strength and improving energy density of an air conditioner

According to the fin planing tool, air inlet air flow of a main body is planed in a ladder manner, so that air flow lines enter and exit fin gaps in a fold line form in a plane perpendicular to the long sides of fins, and local resistance such as air flow impact fin sharp turns and flow cross section expansion in the fin gaps to enable the air flow to be decelerated and flow out of the fin gaps to turn and accelerate is generated; the local resistance of the air flow entering and exiting the fin gaps is obviously larger than the resistance of the air inlet section before and the resistance of the air outlet section after the fin tube heat exchanger assembly, so that the throttling effect of the fin gaps on the air flow is more obvious, and the ventilation heat exchange intensity and uniformity of the surface of the fin tube external heat exchanger assembly are improved; in the chain type flow of medium-speed air intake of air flow of an air path of an external heat exchanger assembly, gradient planing and dispersion deceleration of a fin planing tool, heat exchange on huge fin heat exchange areas on a total huge ventilation surface, collection acceleration, fan boosting and high-speed discharge of a diving type exhaust section, the invention constructs an air path structure of high-efficiency heat exchange inside a double-refrigerating system fusion host machine by taking a fan as a power source and huge continuous arrangement of V-shaped heat exchanger fin planing tools as cores, and improves the energy density of the external heat exchanger assembly and the fusion body; in this embodiment, the flow resistance and the convective heat transfer coefficient are a pair of heat transfer factors which are "opposite and uniform", and the increase of the convective heat transfer coefficient is usually achieved at the cost of increasing the flow resistance, and both the baffle plate in the shell-and-tube heat exchanger and the fin planer of this embodiment increase the convective heat transfer coefficient by increasing the necessary flow resistance.

According to the vertical arrangement of the centrifugal fans, the air suction inlet straight-face external heat exchanger assembly reduces the upward turning local resistance of the air flow before the suction inlet of the traditional air-out multi-split air-conditioner fan, combines the cascade planing of the fin planing cutters and the throttling effect of the fin gaps, and improves the ventilation and heat exchange uniformity of the external heat exchanger; according to the embodiment, the problem of non-uniformity of vertical ventilation and heat exchange of the traditional multi-split external heat exchanger is solved, the height of the external heat exchanger can be improved to be more than 2000mm through the traditional design of about 1200mm of the multi-split external heat exchanger, and the body energy density of the fusion host of the dual-refrigeration system is further improved.

(2) The fin longitudinal and transverse heat bridge is utilized to improve the independent operation energy efficiency ratio

The invention takes a horizontal V-shaped finned tube heat exchanger or a zigzag fold-line type finned tube heat exchanger assembly as a basic unit of an external heat exchanger assembly of an air conditioner host, wherein two flat plate type finned tube heat exchangers forming the horizontal V-shaped finned tube heat exchanger comprise a plurality of refrigerant branches of a plurality of refrigerating systems of an air conditioner air energy water heater, the plurality of refrigerant branches share a set of fin groups, and the set of fin groups comprises a plurality of fins which are parallel to each other;

the external heat exchanger of the air conditioner or the air energy water heater refrigerating system in the running state can evaluate the fin heat exchange area of the air energy water heater or the air energy water heater refrigerating system in the stopping running state through the fin transverse heat bridge effect, so that the fin heat exchange area of the running system heat exchanger is amplified, and the technical effects of improving the evaporating pressure, reducing the condensing pressure, reducing the exhaust temperature of a compressor, increasing the refrigerating and heating power and improving the energy efficiency ratio are realized.

The invention adopts the equipment platform of the fan rear-mounted single-air-duct double-refrigerating system fusion host machine, which has the advantages that:

(1) reducing the number of equipment, simplifying the spatial structure relation of equipment platforms and reducing the occupied area

The invention combines the air energy water heater main machine of the air conditioner main machine into a whole, thereby reducing the number of devices on the device platform and the installation engineering quantity; in addition, the installation of the main machine on the equipment platform is integrated, the installation is very convenient and quick, and the main machine is moved and placed to the outer heat exchanger diving type exhaust section which is close to the outer elevation shutter; the air conditioner main unit is close to the shutter without contacting, hard connection or soft connection is not needed between the air exhaust section and the shutter, the difficulty and the engineering quantity of the installation and construction of the air conditioner main unit are reduced, and the amplification and diffusion of vibration noise of the air conditioner main unit in the shutter are also reduced in a hard connection mode.

The invention combines the air energy water heater host of the air conditioner host into a whole, greatly simplifies the equipment platform and the equipment relationship and the space structure relationship on the outer vertical surface of the equipment platform, comprises the interrelationship of a power circuit, a signal circuit, a refrigerant pipeline, a condensate water waterway and an outer heat exchanger air path of the air energy water heater host of the air conditioner host and the space structure relationship between the air energy water heater host and the equipment platform and the outer vertical surface of the equipment platform, and therefore, the equipment platform is simple and the operation and the maintenance of the equipment are more convenient.

The invention combines the air energy water heater main machine of the air conditioner main machine into a whole, removes the special air supply and exhaust channel of the external heat exchanger of the air energy water heater, and reduces the occupied area of the equipment platform.

(2) Perfect unification of outer elevation decoration and excellent thermal performance of air conditioner host machine is realized

Because of modernization and fashion of the building, because of pursuit of building designers and owners to the visual effect of the outer facade of the building, because the whole society is loving for 'building is solidified music', and the function of the shutter for shielding wind, rain, frost and snow to prevent the erosion of equipment platforms and air conditioner main units, the air conditioner main unit installation method for hiding the air conditioner main units on the equipment platforms by adopting the shutter is comprehensively popularized and solidified, and the problems that the exhaust of the air channel of the external heat exchanger of the classical air conditioner main unit for 'backward and forward exhaust' of the air environment outside the building is inhibited by the shutter, the static pressure of the exhaust air is increased, the air quantity is reduced, and the heat exchange performance of the external heat exchanger is seriously attenuated are unavoidable;

when the air conditioner host on the equipment platform runs, the exhaust air flow penetrates through the outer elevation louver and is far in penetrating into the atmosphere, the diffusion dilution effect is good, the thermal performance of the air conditioner host on the equipment platform is not reduced compared with that of laboratory data, and the air conditioner is used as a heat carrier to finish the task with high quality and high efficiency.

The invention not only eliminates the obstruction of the shutter to the exhaust of the external heat exchanger of the air conditioner host, effectively penetrates through the air path of the external heat exchanger and ensures the thermal performance of the air conditioner host, but also maintains the decoration of the outer facade of the shutter, thereby realizing the perfect unification of the decoration of the outer facade of the equipment platform, the visual effect of the outer facade of the building and the excellent thermal performance of the air conditioner host.

Drawings

FIG. 1 is a top view of an external heat exchanger air path of a rear-inlet front-outlet type central air conditioner host machine of an air path, wherein the air flow rate is reduced due to the fact that a device platform shutter prevents air outlet static pressure from rising, and part of air outlet flows back to an air inlet;

FIG. 2 is a three-dimensional cross-sectional view of a fan rear single duct dual refrigeration system fusion host of embodiment 1;

FIG. 3 is a vertical cross-sectional view of a fusion host machine of a vertical arrangement of a continuous arrangement centrifugal fan of a horizontal V-shaped finned tube heat exchanger of embodiment 1;

FIG. 4 is a horizontal cross-sectional view of a fusion master machine of a vertical arrangement of a continuous arrangement centrifugal fan of a horizontal V-shaped finned tube heat exchanger of embodiment 1;

FIG. 5 is a vertical cross-sectional view of the fan rear single duct dual refrigeration system of embodiment 1 fused with the main machine airflow operation;

FIG. 6 is a schematic diagram of a fan rear single duct dual refrigeration system fusion host system of embodiment 1;

FIG. 7 is a schematic view of a three-dimensional structure of a horizontal cross-section V-shaped finned tube heat exchanger assembly;

FIG. 8 is a horizontal cross-sectional view of a "fin planer" at the fin gap entrance to intercept the incoming airflow, stepped planing to reflect the incoming airflow into the fin gap to complete heat exchange with the fins, and then to discharge the fin gap;

FIG. 9 is a schematic diagram of a fin transverse and longitudinal heat bridge of a multi-branch dual-system flat plate type finned tube heat exchanger of embodiment 1, wherein two branches of two sets of refrigeration systems are arranged on the left and right sides;

FIG. 10 is a schematic diagram of a plate fin tube heat exchanger of three legs per system of the dual refrigeration system of example 1;

FIG. 11 is a schematic view of a transverse and longitudinal heat bridge of a fin of a multi-branch dual-system flat plate type finned tube heat exchanger of example 2, namely a partial enlarged view of a three-row tube finned tube heat exchanger;

fig. 12 is a schematic diagram of an air conditioning system with an intermediate heat exchanger production air conditioning water input indoor unit of embodiment 3;

FIG. 13 is a top view of a fan rear single duct dual refrigeration system fusion host employing a zigzag-type finned tube heat exchanger assembly of example 4;

FIG. 14 is a top view of the air flow of a fan rear single duct dual refrigeration system fusion host employing a zigzag-type finned tube heat exchanger assembly of example 4;

FIG. 15 is a vertical cross-sectional view of the fan rear single duct dual refrigeration system fusion host equipment platform airflow operation with the male air discharge section of example 5;

FIG. 16 is a diagram showing the distribution of the exhaust area of the air inlet area on the outer vertical surface of the platform of the device when the fan rear single-air-duct double-refrigerating system with the convex exhaust section of the embodiment 5 is integrated with the host machine to operate;

FIG. 17 is a vertical cross-sectional view of the equipment platform of embodiment 6 with a fan rear-mounted upper air outlet single duct dual refrigeration system integrated with the main machine airflow operation;

FIG. 18 is a top view of a rear fan wall side air exhaust and side air flow drifting air conditioner water heater fusion host;

FIG. 19 is a top view of the airflow operation of the rear fan wall side exhaust airflow side drift air conditioner water heater fusion host;

FIG. 20 is a top plan view of the rear fan wall side exhaust air flow side drift air conditioner water heater integrated with the main unit equipment platform air flow;

FIG. 21 is a schematic diagram showing the distribution of the air inlet surface and the air outlet surface on the outer vertical surface of the equipment platform when the rear fan wall side air exhaust airflow side drifting air conditioner water heater is integrated with the host machine to operate in summer;

FIG. 22 is a schematic view showing the vertical airflow collection and upward movement of a building when the equipment platform is installed and the rear-mounted fan wall is used for laterally exhausting air and laterally drifting air-conditioning water heater and the main machine is integrated to run in summer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. 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 application.

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 application 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 application, 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 application 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 application.

Definition: the direction perpendicular to the outer vertical face of the outer corridor type equipment platform is set to be longitudinal, and the direction parallel to the outer vertical face of the outer corridor type equipment platform is set to be transverse.

Example 1

As shown in fig. 2-8, a fan rear-mounted single-air-duct double-refrigerating system fusion host comprises a shell 1, a refrigerant circulating system of which the group 2 is arranged in the shell, and an exhaust cavity 3.

The refrigerant circulation system includes an outer heat exchanger 2 and a compressor 4; the refrigerant circulation system shares one external heat exchanger 2 and an external heat exchanger negative pressure cavity 22;

the negative pressure cavity 22 of the outer heat exchanger consists of the outer heat exchanger 2, a part of the shell and the backboard 21;

the back plate 21 is provided with air outlets 23 of the negative pressure cavities 22 of the 4 external heat exchangers, and the air outlets 23 are provided with fans 24 to form a fan wall.

The exhaust cavity 3 is a cavity with a unidirectional air outlet 31 and consists of a vertical exhaust cavity and a horizontal exhaust cavity which are mutually communicated; wherein the transverse exhaust chamber is arranged below the bottom plate of the negative pressure chamber 22 of the outer heat exchanger.

The air outlet 23 is communicated with the air exhaust cavity 3, and an air outlet 31 of the air exhaust cavity 3 is arranged on the same side as the air inlet 11 of the shell; the air outlet 31 of the air exhaust cavity 3 faces the short side of the shell; the outer heat exchanger 2 is an air inlet of the negative pressure cavity 22 of the outer heat exchanger.

The fan 24 is positioned in the exhaust cavity 3, and the fan 24 is a backward inclined outer rotor centrifugal fan.

The back plate of the exhaust chamber 3 is provided at the rear side thereof with a compressor chamber 4 for placing a fluorine circuit assembly including a compressor 41, a gas-liquid separator, a four-way valve, an expansion valve and an electric box.

The air outlet 31 of the air exhaust cavity is connected with an air exhaust section 33, which is matched with the shutter structure of the outer vertical surface of the equipment platform.

The air outlet 31 of the air exhaust cavity of the embodiment is connected with the air exhaust section 33 of the blind structure of the outer elevation of the equipment platform in a riveting manner or a flange connection manner.

A diving type exhaust section 33 is arranged at the air outlet 31; a plurality of deflector plates 34 are arranged in the diving type exhaust section 33. The deflector sheets 34 of the dive exhaust section 33 are parallel or nearly parallel to the louvers of the equipment platform.

The deflector sheet 34 is used for restricting and inducing the direction of the exhaust air flow and is abutted against the outer vertical surface shutter.

When the air conditioner main unit of the embodiment operates, the air exhaust air flow sent into the air exhaust cavity is boosted by the centrifugal fan, is emitted out from the air outlet at a high speed (about 8 m/s), enters the diving type air exhaust section 33, under the constraint and induction of the plurality of flow guide plates 34 arranged in the diving type air exhaust section 33, the air exhaust air flow rays and the shutter window sheets are in parallel or nearly parallel states, the interception area of the shutter window sheet group to the air exhaust air flow is minimum, the interception resistance is minimum, the air exhaust air flow passes through the shutter window sheet group of the outer facade of the equipment platform and is discharged to the external environment atmosphere at a high speed, and the far-range diffusion dilution is carried out.

As shown in fig. 9-10, the finned tube heat exchanger comprises 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; heat exchange tubes 115 are inserted in a direction perpendicular to the plane of the fin plate 110;

along the short side direction of the fin plate 110, 2 groups of heat exchange tube groups 116 penetrating the fin plate are arranged side by side in parallel;

the heat exchange tubes 115 in the heat exchange tube group 116 are arranged in the longitudinal direction of the fin plate 110;

as shown in fig. 12, in the present embodiment, 4 heat exchange tube groups 116 are arranged in the longitudinal direction of the fin plate 110.

The heat exchange tube groups 116 arranged side by side in parallel are connected to different compressors 4, respectively. Namely, two ends of the heat exchange tube group I117 are respectively connected with a fluorine liquid tube 112 and a fluorine gas tube 113 of the air conditioner compressor I121.

The heat exchange tube group II 118 is connected with the fluorine line liquid tube 111 and the fluorine line air tube 114 of the compressor II 122 of the air energy water heater respectively.

As shown in fig. 9, the heat exchange tube groups 116 of the same row are connected in parallel to the fluorine line pipe of the same compressor 4.

Namely, the heat exchange tube group I117 and the heat exchange tube group III 119 in the same row are connected with the fluorine line liquid tube 112 and the fluorine line air tube 113 of the air conditioner compressor I;

the heat exchange tube group II 118 and the heat exchange tube group IV 120 of the same row are connected with a fluorine line liquid tube 111 and a fluorine line gas tube 114 of a compressor II of the air energy water heater.

The heat exchange tube groups 116 arranged side by side in parallel in this embodiment are connected to different compressors, respectively. The fin heat exchanger 37 in the running state can evaluate the fin heat exchange area of the fin heat exchanger of the refrigerating system in the running stopping state through the fin transverse heat bridge effect, so that the fin heat exchange area of the running system heat exchanger is enlarged, and the purposes of improving the evaporating pressure, reducing the condensing pressure, reducing the exhaust temperature of the compressor, increasing the refrigerating and heating power and improving the energy efficiency ratio are achieved.

As shown in fig. 7, as a specific embodiment, the external heat exchanger 2 of this example is a horizontal-section V-shaped fin tube heat exchanger assembly. The horizontal section V-shaped finned tube heat exchanger assembly consists of 4 flat plate type finned 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. 8, 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 horizontal section V-shaped finned tube heat exchanger assembly perpendicular to the long sides of the fins is a broken line, and more specifically, is a W shape;

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. 7, one side of the section of the horizontal section V-shaped finned tube heat exchanger assembly vertical 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 area of the negative pressure cavity 22 of the external heat exchanger.

The incident surface of the air inlet flow is each flat plate type finned tube heat exchanger in the horizontal section V-shaped finned tube heat exchanger assembly, and the intersection angle between 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 fin plate 110 at an obtuse angle beta and is reflected by the fin tips into the fin gap to the outer heat exchanger negative pressure chamber 22.

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 finned tube heat exchanger on the air inlet section;

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.

As shown in fig. 3-5, the air inlet 11, the outer heat exchanger 2, the outer heat exchanger negative pressure cavity 22, the fan 24, the air exhaust cavity 3 and the air outlet 31 of the present embodiment form an air inlet and outlet path with the front outer heat exchanger and the rear air exhaust cavity.

The embodiment creatively reconstructs an outer heat exchanger structure, an outer heat exchanger air path structure and an air conditioner host structure of the household air conditioner host, and creates conditions for fusion of the air conditioner host and an equipment platform.

(1) Innovative structure design of air conditioner main unit

Compared with a classical household air conditioner host and an air energy water heater host, the characteristics of the fusion host of the fan rear-mounted single-air-duct double-refrigerating system of the embodiment are that: a V-shaped finned tube heat exchanger assembly with an oversized heat exchange area and a horizontal section is adopted; the refrigerant pipeline of the external heat exchanger corresponds to two sets of independent refrigerating systems of the air conditioner and the air energy water heater, and the two sets of refrigerant pipelines are thermally connected through the longitudinal and transverse heat bridge of the flat-plate fin tube fins.

The V-shaped finned tube heat exchanger assembly with the horizontal section consists of at least 2 flat plate type finned tube heat exchangers; the section of the horizontal section V-shaped finned tube heat exchanger assembly perpendicular to the long sides of the fins is a folded line type;

in the limited space of the main machine integrated with the single-air-duct double-refrigerating system with the rear-mounted fan, the horizontal-section V-shaped finned tube heat exchanger assembly is arranged in parallel to the direction of the air inlet surface of the air inlet 11, the air inlet surface of the horizontal-section V-shaped finned tube heat exchanger assembly is unfolded to obtain a large-area ventilating surface of the outer heat exchanger, and the large-area ventilating surface of the outer heat exchanger is unfolded again to obtain a large-area finned heat transfer surface, so that the total fin heat exchange area S of the main machine of the air conditioner and the main machine of the air energy water heater is effectively enlarged, the heat transfer temperature difference delta t of the main body of the outer heat exchanger is reduced, the evaporating pressure is increased, the condensing pressure is reduced, and the refrigerating capacity Q and the energy efficiency ratio COP of the refrigerating air conditioner system and the air energy water heater system are increased.

The negative pressure cavity 22 of the external heat exchanger is formed by combining a bottom plate (namely the bottom plate of the shell 1), a side plate, a back plate, the external heat exchanger and a top plate (namely the top plate of the shell 1);

the back plate 21 is arranged opposite to the outer heat exchanger 2 transversely, an air outlet 23 of a negative pressure cavity 22 of the outer heat exchanger is arranged on the back plate 21, and the air outlet 23 is provided with an air suction inlet of a backward inclined outer rotor centrifugal fan; the air suction inlet of the backward-inclined outer rotor centrifugal fan faces to the outer heat exchanger 2. The heat exchanger arranged transversely is an air inlet 11 of the negative pressure cavity of the outer heat exchanger. An exhaust cavity 3 of the centrifugal fan is arranged outside a back plate 21 of the negative pressure cavity 22 of the external heat exchanger, an air outlet 31 of the exhaust cavity 3 is connected with a diving type exhaust section 33, and the structure is matched with the shutter structure of the external elevation of the equipment platform.

The rear side of the back plate of the exhaust cavity 3 in the embodiment is provided with a compressor cavity 4, and 2 groups of refrigerant circulation system compressors 41, four-way valves, expansion valves and other fluorine path components, electric boxes and other circuit components of a fan rear single-air-duct double-refrigerating system fusion host machine are arranged.

The connection between the air outlet 31 and the diving type air exhaust section of the blind structure of the outer elevation of the equipment platform can be realized by adopting a riveting mode or a flange connection mode.

(2) Innovative structure of air inlet and exhaust airflow path of external heat exchanger

The outer heat exchanger 2 of this embodiment has a progressive layout of the air inlet 11, the outer heat exchanger negative pressure chamber 22, the fan wall, the air exhaust chamber 3 and the air outlet 31, and constructs an outer heat exchanger air inlet and outlet path with short path, low resistance, large air volume and high heat exchange strength.

When the outer heat exchanger 2 of the embodiment is in ventilation heat exchange operation, the centrifugal fan is used as power from the air inlet 11 to the air outlet 31, heat exchange air flow undergoes two static pressure-dynamic pressure conversions, the first static pressure-dynamic pressure conversion realizes high-speed air flow suction at the air inlet of the centrifugal fan, and the second static pressure-dynamic pressure conversion realizes high-speed air flow discharge at the air outlet 31 of the air exhaust cavity 3; in addition, the air flow lines entering and exiting the fin gaps of the fin tube heat exchanger are fold line type air flow lines turning twice and are positioned in a plane perpendicular to the long sides of the fins, but not in a plane parallel to the fins; these two points are the most essential movement characteristics of the ventilation and heat exchange process of the outer heat exchanger 2 of the present embodiment.

In the embodiment, the air inlet and outlet fields of the external heat exchanger are established through the operation of 4 centrifugal fans on the fan wall: the centrifugal fan wall is vertically provided with 4 centrifugal fans to pump and exhaust air in the negative pressure cavity 22 of the outer heat exchanger to generate negative pressure in the cavity, the ambient air under the static pressure (gauge pressure) of 0Pa is pulled to enter the main engine from the air inlet of the main engine at a medium speed (about 4 m/s), the air inlet flow of the main engine is shaved by a plurality of fin planing knives to realize the dispersion and deceleration of the air inlet flow, the air flows at a low speed (below 2 m/s) through the fin gaps of the outer heat exchanger to complete heat exchange, then enters the negative pressure cavity 22 of the outer heat exchanger, is collected and accelerated, and flows into the air inlet of the centrifugal fan with the lowest full path pressure (the gauge pressure is a negative value) at a high speed, so that the first air static pressure-dynamic pressure conversion is completed. The heat exchange air flow flowing into the air suction port of the centrifugal fan at high speed is boosted by the centrifugal fan and sent into the air exhaust cavity 3 with positive pressure relative to the atmospheric environment, and is ejected out from the air outlet 31 at high speed, enters the diving type air exhaust section 33, under the restraint and induction of a plurality of diving type air guide plates 34 arranged in the diving type air exhaust section 33, the air exhaust air flow rays and the shutter window sheets of the outer vertical face of the equipment platform are in parallel or nearly parallel states, the interception area of the shutter window sheet group to the air exhaust air flow is minimum, the interception resistance is minimum, the air exhaust air flow passes through the shutter window sheet group at low resistance at high speed and is exhausted to the atmospheric air of the external environment at high speed (about 8 m/s), and the long-range diffusion dilution is realized. In the embodiment, the heat exchange air flow is from the air inlet 11 to the air outlet 31 of the main machine, and is subjected to twice static pressure-dynamic pressure conversion by taking the centrifugal fan as power, so that the high-speed suction of the centrifugal fan and the high-speed discharge of the exhaust cavity are realized.

When the fan rear-mounted single-air-duct double-refrigerating system of the embodiment is integrated with a host machine to operate, the microscopic process that air flows in and out of fin gaps and flows at low speed in the fin gaps is a key link of the external heat exchanger 2 in and out of a 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 and the fins at the back side of the gap form an obtuse angle relation, and the fins at the back side of the gap are used as a plane cutter to plane a piece of air flow from the air inlet main body air flow and plug into the fin gap; the main body air inlet airflow which is "dug" is intercepted by the blade tip of the "fin planer" at the F-F position, and the main body air inlet airflow impinges on the blade tip of the "planer" of the fin at the back side of the gap at an obtuse angle, and is diffused and decelerated in the fin gap after being reflected by the fin 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 the negative pressure of the negative pressure cavity of the external heat exchanger at about 1.5m/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 embodiment realizes the innovation of a large-span structure for the air inlet flow path and the air outlet flow path of the outer heat exchanger 2.

The air path of the embodiment is single-channel and adopts the diving type air exhaust section, and the double refrigeration systems can independently operate, namely, the two sets of refrigeration systems can synchronously operate or asynchronously operate.

Example 2

In both the embodiment and the embodiment 1, the fin heat exchange area of the external heat exchanger of the independently operated refrigeration system is increased by utilizing the fin longitudinal and transverse heat bridge so as to improve the heat exchange strength and the energy efficiency ratio. The present embodiment is different in that:

the fin tube heat exchanger employed in this embodiment, as shown in fig. 11,

the finned tube heat exchanger comprises 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; heat exchange tubes 115 are inserted in a direction perpendicular to the plane of the fin plate 110;

along the short side direction of the fin plate 110, 3 heat exchange tube groups 116 penetrating the fin plate are arranged side by side in parallel, wherein 1 heat exchange tube group is an air energy water heater heat exchange tube group 128.

the fin plate 110 includes 4 groups of heat exchange tube groups I117 and II 118 and IV 120 for the air conditioning system. The air energy water heater heat exchange tube banks 128 are located between adjacent heat exchange tube banks for the air conditioning system, with the fins between each heat exchange tube bank forming heat bridges in the transverse and longitudinal directions.

The two ends of the heat exchange tube group I117 and the heat exchange tube group II 118 are respectively connected with a fluorine liquid tube 112 and a fluorine gas tube 113 of the air-conditioning compressor I121.

The air energy water heater heat exchange tube group 128 is respectively connected with a fluorine line liquid tube and a fluorine line air tube of the air energy water heater compressor III 129.

The heat exchange tube groups 116 of the same row are connected in parallel to the fluorine line pipe of the same air conditioner compressor.

The heat exchange tube group I117 and the heat exchange tube group III 119 which are arranged in the same row are connected with a fluorine liquid tube 112 and a fluorine gas tube 113 of the air conditioner compressor I;

the heat exchange tube group II 118 and the heat exchange tube group IV 120 which are arranged in the same row are connected with a fluorine liquid tube 112 and a fluorine gas tube 113 of the air-conditioning compressor I.

The horizontal section V-shaped fin tube heat exchanger assembly is a fin tube heat exchanger assembly composed of 4 fin tube heat exchangers 37 of the present embodiment.

The cross section of the horizontal cross section V-shaped finned tube heat exchanger assembly, which is vertical to the fins 110, is a folded line type; the fin long sides of the fin tube heat exchanger 37 are arranged in the vertical direction or close to the vertical direction;

in the embodiment, the cross section of the horizontal cross section V-shaped finned tube heat exchanger assembly, which is vertical to the fins 110, is W-shaped, and is formed by continuously arranging 2 fin tube heat exchangers 40, which are vertical to the fin cross sections, in a V-shaped manner;

the vertex angle alpha of the V-shaped fin tube heat exchanger is 15-90 degrees.

The integral structure of the air conditioner main unit and air energy water heater main unit two-in-one finned tube heat exchanger assembly is formed by combining 2 horizontal V-shaped finned tube heat exchangers, each V-shaped finned tube heat exchanger is formed by combining 2 flat plate type finned tube heat exchangers, each 1 flat plate type finned tube heat exchanger further comprises 3 rows of heat exchange tube groups, wherein 2 rows of heat exchange tube groups on the inner side and the outer side belong to an air conditioner main unit outer heat exchanger, 1 row of heat exchange tube groups in the middle belong to an air energy water heater main unit outer heat exchanger, fins are complete and continuous, and fin transverse and longitudinal heat bridge functions are complete and continuous.

According to the embodiment, the heat transfer area of the fins near the middle heat exchange tube group of the air energy water heater is evaluated through the inner and outer heat exchange tube groups in the outer heat exchanger of the air conditioning system, so that the refrigeration energy efficiency ratio of the air conditioning system in independent operation is improved; the heat transfer area of fins near the inner and outer heat exchange tube groups of the air-energy water heater system is more favorable for the middle heat exchange tube group of the air-energy water heater system, and the refrigeration energy efficiency ratio of the air-energy water heater system during independent operation is greatly improved. Although the power of the air energy water heater is usually smaller than that of a household central air conditioner, the requirement of hot water required by household bathing, cooking and sanitary washing is continuously increased along with the evolution of life style and sanitary habit, even in spring and autumn when the air conditioner is rarely operated, so that the embodiment greatly improves the energy efficiency ratio of the air energy water heater system and has important significance.

Example 3

As shown in fig. 12, in both the present embodiment and embodiment 1, the fin heat exchange area of the external heat exchanger of the independently operated refrigeration system is increased by using the fin longitudinal and lateral heat bridge.

The dual refrigeration system of the embodiment is respectively used for an air conditioner and an air energy water heater.

The embodiment is different in that an intermediate heat exchanger 6 is arranged in a compressor cavity 4 of an air conditioner host, and two paths of heat exchange medium channels of the intermediate heat exchanger 6 are respectively a refrigerant channel and an air conditioner water channel;

the refrigerant channel is connected with a fluorine path of the air conditioner host; the air-conditioning water passage is connected to an air-conditioning indoor heat exchanger 44.

The air conditioner main unit of the embodiment produces cold water (hot water) through the intermediate heat exchanger 6 and transmits the cold water (hot water) to the air conditioner indoor unit for cooling and dehumidifying (heating) the indoor air; the intermediate heat exchanger 6 may be a plate heat exchanger, a shell and tube heat exchanger, a double tube heat exchanger or a combination thereof.

In the embodiment, a single air duct and double air ducts integrated host machine with a rear-mounted fan is used, a compressor is used as power to drive a refrigerant to circulate in a closed cycle on the refrigerant side, and high-efficiency phase change heat exchange is realized in the refrigerant circulation process, so that the low-temperature air evaporator of an air conditioner refrigerating system is coupled with heat absorption of a condenser in high-temperature air and heat release of the condenser in low-temperature air of an air energy water heater heat pump system is coupled with heat absorption of the evaporator in low-temperature air and heat release of the condenser in high-temperature water of a water tank.

In this embodiment, a compressor chamber 4 is disposed at the rear side of the back plate of the exhaust chamber 3, and circuit components such as a compressor 4, a four-way valve, an expansion valve, a gas-liquid separator and the like of 2 groups of refrigerant circulation systems, and a power cable signal line electric box and the like are disposed. The components of the refrigerating loop, the external heat exchanger, the refrigerant connecting pipe, the indoor unit heat exchanger and the like form an air conditioner refrigerant circulation loop and an air energy water heater refrigerant circulation loop according to the sequence of a compressor, a four-way valve, a condenser, an expansion valve, an evaporator, a four-way valve, a gas-liquid separator and a compressor; the compressor is used as the power of a refrigerant circulation loop, a high-low pressure state of the refrigerant is respectively established in a condenser evaporator pipeline, the refrigerant is driven to circulate in the refrigerant circulation loop and repeatedly change phases to realize heat transfer, namely, the air conditioning refrigeration system absorbs heat of low-temperature ambient air flowing through gaps of fins through evaporation and heat absorption of refrigerant liquid in the inner pipeline of the evaporator and absorption of heat absorption areas of the giant fins connected with the copper pipes in an ascending manner, and releases heat of high-temperature ambient air flowing between the fins through condensation and heat release of high-temperature high-pressure refrigerant gas in the condenser pipeline and release of heat of the high-temperature ambient air flowing between the fins through heat release areas of the giant fins connected with the copper pipes in an ascending manner, so that heat is transferred from the low-temperature environment of the air conditioning evaporator to the high-temperature environment of the condenser.

The air energy water heater refrigerating system absorbs heat of air in the atmospheric environment flowing through fin gaps through evaporation and heat absorption of refrigerant liquid in an inner pipeline of an evaporator and then through a huge fin heat absorption area connected with a copper pipe in an expanding mode, and heat is transferred from the atmospheric environment where the water heater evaporator is located to the high-temperature water environment where the condenser is located through condensation and heat release of high-temperature high-pressure refrigerant gas in a pipeline of a condenser 71 in the water tank 7.

The present embodiment has all the advantages of embodiments 1-2, and the air conditioner host increases the output of air-conditioning water from the intermediate heat exchanger 6 to the indoor units in the building to block the refrigerant on the corridor type equipment platform, thereby avoiding the risk of leakage and accumulation of the refrigerant in the building, and creating conditions for the air conditioner host to adopt the environment-friendly refrigerant with zero global warming effect and zero ozone layer destruction effect, such as R290, but with combustibility.

Example 4

As shown in fig. 13-14, the principle and the structure of the present embodiment are the same as those of embodiment 1, and the present embodiment is a double-refrigerating-system fusion host with the front-mounted external heat exchanger assembly and negative pressure cavity, and the rear-mounted centrifugal fan and exhaust cavity.

The present embodiment is different in that: the outer heat exchanger 2 is a zigzag fold line type finned tube heat exchanger assembly formed by combining three flat plate type finned tube heat exchangers 37 and a partition plate 39; wherein, the two flat plate type finned tube heat exchangers 37 form a V-shaped finned tube heat exchanger 40, and the two flat plate type finned tube heat exchanger end plates can be connected to form a V-shaped finned tube heat exchanger, or a plurality of single-row tube flat plate type finned tube heat exchangers are bent into a V shape and then assembled to form a composite V-shaped finned tube heat exchanger; the other flat plate type finned tube heat exchanger 37 is independently arranged outside the V-shaped finned tube heat exchanger, a partition plate 39 is arranged between the other flat plate type finned tube heat exchanger and the V-shaped finned tube heat exchanger, an exhaust cavity of the finned tube heat exchanger is arranged between the partition plate 39 and the finned tube heat exchanger, and the exhaust cavity is communicated with the negative pressure cavity of the external heat exchanger.

The included angle gamma between the baffle plate and the flat plate type finned tube heat exchanger is 0.5 alpha;

the included angle epsilon between the baffle plate and the V-shaped finned tube heat exchanger is 0.5alpha.

The zigzag fold line type finned tube heat exchanger assembly is zigzag in cross section perpendicular to the long sides of the fins.

The heat exchange tubes of the zigzag folding line type finned tube heat exchanger assembly are parallel to the zigzag edges; the fin plate group of the fin tube heat exchanger is orthogonally sleeved on the copper tube.

The zigzag fold line type finned tube heat exchanger assembly divides a heat exchange air duct into a front cavity and a rear cavity, the front cavity is an air inlet cavity, the rear cavity is communicated with an air suction port of the fan set, and the rear cavity is an outer heat exchanger negative pressure cavity 22;

the heat exchange tube and the side wall of the negative pressure cavity of the adjacent outer heat exchanger form an obtuse angle.

In the embodiment, as the three-plate type finned tube heat exchanger assembly with the V+1 structure is adopted, compared with a single V-shaped finned tube heat exchanger, the heat exchange area is enlarged, and the requirement of an air conditioning system with larger refrigerating capacity is met.

Example 5

As shown in fig. 15-16, a device platform, a fan rear single-duct dual-refrigeration system fusion host is arranged in the outer corridor type device platform, and an air outlet 31 of an air exhaust cavity 3 faces to the outer vertical surface of the outer corridor type device platform.

The air conditioner main unit of the present embodiment is similar to embodiment 1 in that the air conditioner main unit of the present embodiment is different from embodiment 1 in that:

the air outlet 31 is provided with an outer convex type air exhaust section 35 which is matched with the shape of the air outlet; a plurality of deflector plates 34 are arranged in the convex exhaust section 35.

The outer vertical surface shutter of the outer corridor type equipment platform is provided with an opening structure 36 matched with the outer convex type exhaust section 35. The outer convex exhaust section 35 is embedded in the opening structure 36 of the shutter. When the air conditioner main unit is in operation, the exhaust air of the air outlet 31 passes through the opening structure of the shutter to directly exhaust the ambient atmosphere.

The present embodiment has all the advantages of embodiment 3, and since the frame of the outer convex air exhaust section 35 and the air guide plate 34 embedded in the opening structure 36 of the shutter are not hidden behind the shutter, but the straight external environment becomes a part of the outer vertical surface of the visible equipment platform, the frame of the outer convex air exhaust section 35 and the air guide plate 34 have decoration, so that the structure change and the color change of the shutter of the outer vertical surface of the equipment platform are increased, and a better decorative visual effect is achieved; the outer convex air exhaust section 35 embedded in the shutter and the opening structure 36 of the shutter can be suspended in the opening structure 36 of the shutter or flexibly connected with the opening structure of the shutter without rigid connection, so as to avoid the transmission and amplification of the noise of the air conditioner host.

Example 6

As shown in fig. 17, in both the present embodiment and embodiment 1, the main section of the air exhaust channel of the air intake channel of the outer heat exchanger assembly is brought into the main body by adopting the pneumatic layout of the centrifugal fan wall which is arranged vertically and is arranged behind the centrifugal fan wall.

The difference of this embodiment is that the exhaust chamber 3 is composed of a vertical exhaust chamber and a horizontal exhaust chamber which are mutually communicated, and the horizontal exhaust chamber is located above the top plate of the negative pressure chamber 22 of the external heat exchanger.

In the embodiment, the mode of air outlet on the vertical air cavity and transverse air exhaust on the top air cavity is adopted, so that the gravity center of the fusion host is reduced, the running stability is improved, and the running vibration noise is reduced.

The air outlet 31 is provided with an externally convex air exhaust section 35 which is matched with the shape of the air outlet.

Example 7

As shown in fig. 18-22, the air conditioner water heater fusion host with the rear fan wall side exhaust air flow side drifting jet in the embodiment has the compressor cavity arranged at the rear side of the back plate of the exhaust cavity 3, namely the rear compressor cavity.

The exhaust cavity 3 is a cavity with a unidirectional air outlet and consists of a vertical exhaust cavity and a lateral exhaust cavity which are mutually communicated. The air outlet 31 is communicated with a lateral air exhaust section 35, a lateral air guide plate sheet set is arranged in the lateral air exhaust section 35, the air guide plate sheet 34 is vertically arranged and provided with an angle for guiding the air exhaust airflow to deviate from the air conditioner main machine, namely, the air guide plate sheet set points to the side which is away from the air inlet of the main machine at a small angle;

in the embodiment, a shutter 52 is arranged on the outer vertical surface of an equipment platform of the fusion host of the air-conditioning water heater, and an opening structure 36 capable of freely accommodating a lateral exhaust section is reserved on the shutter 52 close to the side wall; when the host device is installed, the lateral exhaust section of the host device is embedded into the reserved opening structure 36 of the shutter;

when the equipment platform of the air-conditioning water heater fusion host machine runs, the air-conditioning water heater fusion host machine positive pressure air exhaust cavity discharges air into a lateral air exhaust section at high speed after heat exchange, the air exhaust air flows from the horizontal direction to the lateral direction under the constraint and induction of the flow guide plate group in the lateral air exhaust section, the air exhaust air flows are separated from the space right in front of the equipment platform, the air exhaust air flows are prevented from flowing back to the local equipment platform, and meanwhile, the air exhaust air flows are prevented from being sucked in by the lower adjacent equipment platform (winter) or the upper adjacent equipment platform (summer) after being discharged from the local equipment platform. And when the air conditioning water heater of a plurality of layers of equipment platforms of the building is seen from the vertical direction, the air conditioning water heater fuses with the main machine exhaust air flow to jet in the horizontal plane in a small-angle lateral direction, then gathers in the vertical direction of the outer space at the rear side of the compressor cavity, the hot air flow moves upwards in summer, the cold air flow moves downwards in winter, and is separated from the vertical space of the equipment platforms, and the air conditioning water heater is separated from the equipment platforms for diffusion dilution.

When the external heat exchanger of the traditional high-rise building, especially the high-rise residential building, in winter (summer) is in ventilation operation to the environment atmosphere, as the external elevation of the equipment platform has the positive pressure high-speed external air exhaust of a small-area air exhaust area and the micro negative pressure low-speed suction of the environment air of a large-area air inlet area, the phenomenon that the external air exhaust is diffused and diluted in the atmosphere and the external elevation of the air exhaust and reflux after partial dilution occurs, and the problem of the performance degradation of the fusion host of the air-conditioning water heater is caused by the attachment of cold (hot) air of the external elevation of the equipment platform is caused:

in winter, cold air discharged by the external heat exchanger of each layer of equipment platform is diffused and diluted in front of the external facade of the external heat exchanger and partially flows back, the whole cold air discharged by the existing multi-layer equipment platform moves downwards and converges in a vertical direction, the cold air is connected end to end, beads are in a chain, the more the strings are, the outer facade of the equipment platform is covered, so that host equipment of the lower layer of equipment platform is sucked into cold air discharged by an air-conditioning water heater fusion host of the upper layer of equipment platform, the evaporating temperature is reduced, the circulation quantity of a refrigerant is reduced, and the heating performance of the host equipment is deteriorated;

in summer, hot air discharged by the outer heat exchangers of all layers of equipment platforms is diffused and diluted in front of the outer facade of the outer heat exchangers and partially flows back, the whole hot air discharged by the existing multi-layer equipment platforms moves upwards and converges in a vertical direction, the hot air is connected end to end, beads are connected in a chain mode, the outer facade of the equipment platforms is covered more in a serial mode, so that an air-conditioning water heater fusion host of the upper layer equipment platform sucks hot air discharged by an air-conditioning water heater fusion host of the lower equipment platform, the condensation temperature is raised, the supercooling degree of condensate is reduced, and the refrigerating performance of the air-conditioning water heater fusion host is deteriorated;

In this embodiment, under the constraint and induction of the flow guide plate group in the lateral exhaust section, the air after heat exchange of the host equipment in each layer is blown to the outer space at the rear side of the compressor cavity at a high speed in a lateral direction, and the exhaust air flow is separated from the space right in front of the equipment platform, so that the exhaust air flow is stopped from flowing back to the local equipment platform, and the risk that the exhaust air flow is sucked by the lower adjacent equipment platform (winter) or by the upper adjacent equipment platform (summer) after being discharged from the local equipment platform is stopped.

It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. 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 invention are desired to be protected by the following claims.

Claims

1. The utility model provides a fan postposition list wind channel double refrigeration system fuses host computer which characterized in that includes casing, at least 2 sets of refrigerant circulation system who sets up in the casing, and exhaust cavity; the refrigerant cycle system includes an external heat exchanger and a compressor; the at least 2 groups of refrigerant circulation systems share one negative pressure cavity of the external heat exchanger;

2. The fan rear single-air-duct double-refrigerating system fusion main machine according to claim 1, wherein the outer heat exchanger is a horizontal section V-shaped finned tube heat exchanger assembly or a zigzag folding-line finned tube heat exchanger assembly; at least 2 flat plate type finned tube heat exchangers of the horizontal section V-shaped finned tube heat exchanger assembly; 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 cross section of the horizontal section V-shaped finned tube heat exchanger assembly perpendicular to the long sides of the fins is a folded line type.

3. The fan rear single air duct dual refrigeration system fusion host machine of claim 2, wherein the flat plate type finned tube heat exchanger comprises a finned plate and a heat exchange tube; a plurality of fin plates which are parallel to each other and are separated by a certain interval form a fin group;

Heat exchange tubes are arranged in a penetrating manner along the direction perpendicular to the fin plates; at least 2 heat exchange tube groups penetrating through the fin plates are arranged in parallel along the short side direction of the fin plates; the heat exchange tubes in the heat exchange tube group are arranged along the long side direction of the fin plate; compressors connected to different refrigerant circulation systems are arranged in parallel and side by side with heat exchange tube groups; the fins between the heat exchange tube groups are continuous and complete, and fin heat bridges are formed in the transverse and vertical directions of the fins.

4. The fan rear single-air-duct double-refrigerating system fusion host machine according to claim 3, wherein the heat exchange tube groups in the same row are connected in parallel to fluorine path pipelines of the same refrigerating system; or the relative positions of the heat exchange tubes of different heat exchange tube groups on the fin plates can be exchanged left and right, and are arranged in a crossed way.

5. The fan rear single air duct dual refrigeration system fusion main machine according to claim 3, wherein at least 2 groups of heat exchange tube groups penetrating through the fin plates are all heat exchange tube groups of the air conditioning system.

6. The fan rear single air duct dual refrigeration system fusion main machine according to claim 3, wherein at least 2 groups of heat exchange tube groups penetrating the fin plates are arranged, and at least 1 group of heat exchange tube groups are air energy water heater heat exchange tube groups.

7. The fan rear single air duct dual refrigeration system fusion main unit of claim 5, wherein the fin plate comprises at least 3 heat exchange tube groups for the air conditioning system, and the air energy water heater heat exchange tube groups are positioned between adjacent heat exchange tube groups for the air conditioning system.

8. The fan rear single-air-duct double-refrigerating system fusion main machine according to claim 2, wherein the zigzag folding-line type finned tube heat exchanger assembly is formed by combining one or two of a plurality of flat plate type finned tube heat exchangers or V-type finned tube heat exchangers with a plurality of partition plates; the zigzag folding line type finned tube heat exchanger assembly is zigzag folding line type on a section perpendicular to the long side of the fin.

9. The fan rear single-air-duct double-refrigerating system fusion host machine according to claim 1, wherein the back plate is provided with at least 2 air outlets; a fan is arranged at each air outlet to form a fan wall; preferably, the fan adopts a centrifugal fan or an axial flow fan; further preferably, the centrifugal fan is a backward inclined outer rotor centrifugal fan; preferably, the fans are arranged in the same vertical plane.

10. The integrated host machine of a rear single-air-duct double-refrigerating system of a fan according to claim 1, wherein the air exhaust cavity is a cavity with a unidirectional air outlet and comprises a vertical air exhaust cavity or consists of a vertical air exhaust cavity and a transverse air exhaust cavity which are mutually communicated; or consists of a vertical exhaust cavity and a lateral exhaust cavity which are communicated with each other; the lateral exhaust cavity is arranged on the outer side of the negative pressure cavity side plate of the outer heat exchanger.

11. The blower fan rear single-air-duct double-refrigerating system fusion host machine according to claim 9, wherein an exhaust section is arranged at the air outlet.

12. The fan rear single-air-duct double-refrigerating system fusion host machine according to claim 10, wherein a plurality of flow guide plates are arranged in the exhaust section; the air guide plate sheet is parallel to or nearly parallel to the shutter sheets, or the air guide plate sheet is vertically arranged and provided with an angle for guiding the exhaust air flow to deviate from the air conditioner host.

13. The blower fan rear single-air-duct double-refrigerating system fusion main machine according to claim 1, wherein a compressor cavity for placing a fluorine circuit assembly comprising a compressor, a gas-liquid separator, a four-way valve, an expansion valve and an electric box is arranged on the rear side of a back plate of the vertical exhaust cavity or on the outer side of a negative pressure cavity wall plate of the outer heat exchanger.

14. The integrated host machine of the blower fan rear single-air-duct double-refrigerating system according to claim 1, wherein the integrated host machine is further provided with an intermediate heat exchanger, and two paths of heat exchange medium channels of the intermediate heat exchanger are respectively a refrigerant channel and an air-conditioning water channel of the air-conditioning host machine; the refrigerant channel is connected with a fluorine path of the air conditioner host; the air conditioner water channel is connected with an air conditioner indoor heat exchanger.

15. An equipment platform is characterized in that the fan rear-mounted single-air-duct double-refrigerating system fusion host machine according to any one of claims 1 to 14 is arranged in a corridor type equipment platform, and an air outlet of an air exhaust cavity faces to an outer vertical surface of the corridor type equipment platform.

16. The equipment platform of claim 15, wherein an exhaust section is provided at the air outlet; the exhaust section is arranged adjacent to the outer vertical face shutter of the outer corridor type equipment platform.

17. The equipment platform of claim 15, wherein an exhaust section is provided at the air outlet; an opening structure matched with an exhaust section is arranged on the outer elevation shutter of the outer corridor type equipment platform; the exhaust section is embedded into the shutter opening structure.

18. The air conditioner mainframe equipment platform of claim 17, wherein the open configuration of the louver is rectangular with a long side parallel to a bottom or side of the equipment platform.