CN115789796B - Outdoor heat exchanger structure and air conditioning system - Google Patents
Outdoor heat exchanger structure and air conditioning systemInfo
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- CN115789796B CN115789796B CN202211552340.6A CN202211552340A CN115789796B CN 115789796 B CN115789796 B CN 115789796B CN 202211552340 A CN202211552340 A CN 202211552340A CN 115789796 B CN115789796 B CN 115789796B
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- collecting pipe
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Abstract
本发明公开了一种室外换热器结构及空调系统，包括：集气管组件，所述集气管组件通过第一控制阀和第二控制阀分为第一集气管部分、第二集气管部分和第三集气管部分；第一集液管组件，其一侧的一部分管道与第一换热器的另一侧连接，另一部分管道与第二换热器的一侧连接；第二集液管组件，其一侧与第三换热器的另一侧连接。本发明通过控制阀件将集气管划分为三个区域，每个区域对应独立的换热器。换热器的迎风面积与风场效果成正相关性。将风场效果最优对应的两个换热器，通过阀门组件可形成并联与串联流路，作为冷凝段使用；将风场效果最差对应的换热器，作为过冷段使用。制冷模式下，根据运行负荷需求自由切换换热器的流路，加大换热效率。
The present invention discloses an outdoor heat exchanger structure and air-conditioning system, comprising: an air collecting pipe assembly, wherein the air collecting pipe assembly is divided into a first air collecting pipe part, a second air collecting pipe part and a third air collecting pipe part by a first control valve and a second control valve; a first liquid collecting pipe assembly, wherein a part of the pipe on one side is connected to the other side of the first heat exchanger, and the other part of the pipe is connected to one side of the second heat exchanger; and a second liquid collecting pipe assembly, wherein one side is connected to the other side of the third heat exchanger. The present invention divides the air collecting pipe into three areas by controlling the valve component, and each area corresponds to an independent heat exchanger. The windward area of the heat exchanger is positively correlated with the wind field effect. The two heat exchangers corresponding to the best wind field effect can form parallel and series flow paths through the valve assembly and be used as the condensing section; the heat exchanger corresponding to the worst wind field effect is used as the subcooling section. In the cooling mode, the flow path of the heat exchanger can be freely switched according to the operating load demand to increase the heat exchange efficiency.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an outdoor heat exchanger structure and an air conditioning system.
Background
When designing the flow path of the outdoor heat exchanger, the influence of the wind field unevenness needs to be considered. Particularly in the area with weaker wind field, in order to give consideration to the evaporation efficiency outside the heating mode chamber, the flow path of the area with weaker wind field is not smooth compared with the area with good wind field when the liquid collecting pipe is designed, and the problem of liquid refrigerant accumulation after condensation can be brought about in the refrigerating mode. Meanwhile, under different refrigeration load demands, the demands on outdoor condensation areas are different, and if a large condensation area is configured for a small refrigeration load demand, the problem of heat exchange efficiency damage caused by the slow flow rate of the refrigerant can be solved.
Disclosure of Invention
The invention provides an outdoor heat exchanger structure and an air conditioning system, which aim to solve the technical problem that the influence of a wind field on a heat exchange effect is not considered in the outdoor heat exchanger in the prior art.
The technical scheme adopted by the invention is as follows:
the invention provides an outdoor heat exchanger structure, comprising:
the gas collecting tube assembly is divided into a first gas collecting tube part, a second gas collecting tube part and a third gas collecting tube part through a first control valve and a second control valve;
The heat exchanger group comprises a first heat exchanger, one side of which is connected with the first gas collecting pipe part, one side of which is connected with the second heat exchanger of the second gas collecting pipe part, one side of which is connected with the third heat exchanger of the third gas collecting pipe part, and the windward areas of the three heat exchangers and the wind field effects corresponding to the three heat exchangers form positive correlation;
A part of pipelines on one side of the first liquid collecting pipe assembly are connected with the other side of the first heat exchanger, and the other part of pipelines are connected with the other side of the second heat exchanger;
and one side of the second liquid collecting pipe assembly is connected with the other side of the third heat exchanger.
Further, the other sides of the first heat exchanger and the second heat exchanger are branched into two paths, one path is connected with the first liquid collecting pipe assembly, and the other path is connected with each other through a pipeline so that the other sides of the first heat exchanger and the second heat exchanger are connected in series.
Further, the plurality of pipeline interfaces at the other side of the first heat exchanger are sequentially divided into n groups according to the heat exchange effect from high to low, the plurality of pipeline interfaces at the other side of the second heat exchanger are sequentially divided into n groups according to the heat exchange effect from low to high, n is larger than 1, and each group of pipeline interfaces of the first heat exchanger is connected with each group of pipeline interfaces of the second heat exchanger in a one-to-one correspondence manner through pipelines.
Further, the pipelines connected in series with each other at the other sides of the first heat exchanger and the second heat exchanger are straight pipes.
The invention further comprises a first connecting pipe connected with the side of the indoor heat exchanger, a throttling component is arranged on the first connecting pipe, the first connecting pipe is branched into two branch pipelines, and the two branch pipelines are respectively connected with the other sides of the first liquid collecting pipe component and the second liquid collecting pipe component.
The invention further comprises a third control valve and a fourth control valve, wherein one end of the third control valve is communicated with the other sides of the first heat exchanger and the second heat exchanger through a pipeline, the other end of the third control valve is connected with the gas collecting pipe assembly, a connecting point is positioned between the second control valve and the third gas collecting pipe part, and the fourth control valve is arranged on a branch pipeline of the first connecting pipe connected with the first liquid collecting pipe assembly.
Further, the fourth control valve is a one-way valve or a switching valve, and the third control valve is a flow regulating valve or a switching valve.
The invention also provides an air conditioning system which is characterized by comprising the outdoor heat exchanger structure.
The air conditioning system comprises a gas-liquid separator, a compressor and a four-way valve, and the gas collecting tube assembly is connected with the four-way valve.
Specifically, when the air conditioning system operates in the refrigeration parallel mode, the four-way valve is switched to enable the exhaust side of the compressor to be communicated with the gas collecting tube assembly, the first control valve and the third control valve are opened, and the second control valve and the fourth control valve are closed.
Specifically, when the air conditioning system operates in a refrigeration serial mode, the four-way valve is switched to enable the exhaust side of the compressor to be communicated with the gas collecting tube assembly, the second control valve is opened, the first control valve and the fourth control valve are closed, the third control valve is closed, or the opening of the third control valve is adjusted according to load requirements.
Specifically, when the air conditioning system operates in a heating mode, the four-way valve is switched to enable the gas collecting tube assembly to be communicated with the gas-liquid separator, the first control valve, the second control valve and the fourth control valve are opened, and the third control valve is closed.
Compared with the prior art, the invention has the following advantages:
A structure of a multi-path outdoor heat exchanger is provided. The gas collecting tube is divided into three areas by the control valve, and each area corresponds to an independent heat exchanger. The frontal area of the heat exchanger is positively correlated with the wind field effect. The two heat exchangers with the best corresponding wind field effect can form parallel and serial flow paths through the valve assembly to be used as a condensing section, and the heat exchanger with the worst corresponding wind field effect is used as a supercooling section. In the refrigeration mode, the flow path of the heat exchanger is freely switched according to the operation load requirement, so that the heat exchange efficiency is increased.
In the condensing section, outlets of the first heat exchanger and the second heat exchanger are designed in a double-flow way, one path is connected with a throttling component and used for uniform liquid-separating evaporation during heating, and the other path is connected with a typical flow path of the first heat exchanger and the second heat exchanger in series by adopting a straight pipe section, so that the two heat exchangers are connected in series during partial load and the two heat exchangers are connected in parallel during full load. The typical flow path is that a part of the flow path of the first heat exchanger is connected in series with one path of the second heat exchanger, so that the effect of equivalent heat exchange of all the flow paths of the series flow path out of the second heat exchanger is achieved.
The two heat exchangers of the condensing section adopt a double-flow-path design that the heating flow passes through the straight pipe section through the throttling component for refrigeration, so that the liquid can be uniformly improved in evaporation effect of the heat exchangers in the heating flow path during heating, and the pressure loss caused by the throttling component in the refrigerating flow path can be avoided.
The outlet of the heat exchanger corresponding to the supercooling section adopts a connection mode of a throttling component, is arranged in front of a refrigerating flow direction flow regulating valve, can be used as an evaporator in a heating mode, and improves the overall heating heat exchange efficiency of the heat exchanger.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an outdoor heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a parallel flow path for a refrigeration mode of an outdoor heat exchanger in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a series flow path of a refrigeration mode of an outdoor heat exchanger in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a series flow path of a refrigeration mode of an outdoor heat exchanger according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of a parallel flow path of a heating mode of an outdoor heat exchanger in an embodiment of the present invention;
Fig. 6 is a schematic structural view of an outdoor heat exchanger according to another embodiment of the present invention.
1. A gas-liquid separator; 2, a compressor, 3, a four-way valve, 4, an outdoor heat exchanger, 5, a first connecting pipe, 6, a second connecting pipe;
401. 4011, a first control valve, 4012, a second control valve;
402. 4021, a first heat exchanger, 4022, a second heat exchanger, 4023 and a third heat exchanger;
403. A liquid collecting pipe assembly; 4031, a first liquid collecting pipe assembly, 4032, a second liquid collecting pipe assembly, 4033, a first connecting pipe, 4034, a second connecting pipe, 4035, a third connecting pipe, 404, a third control valve, 405, a fourth control valve, 406 and a throttling component.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The principles and structures of the present invention are described in detail below with reference to the drawings and the examples.
When designing the flow path of the outdoor heat exchanger, the influence of the wind field unevenness needs to be considered. Particularly in the area with weaker wind field, in order to give consideration to the evaporation efficiency outside the heating mode chamber, the flow path of the area with weaker wind field is not smooth compared with the area with good wind field when the liquid collecting pipe is designed, and the problem of liquid refrigerant accumulation after condensation can be brought about in the refrigerating mode. Meanwhile, under different refrigeration load demands, the demands on outdoor condensation areas are different, and if a large condensation area is configured for a small refrigeration load demand, the problem of heat exchange efficiency damage caused by the slow flow rate of the refrigerant can be solved. In this regard, the invention provides an outdoor heat exchanger structure, wherein a gas collecting pipe is divided into three areas by a control valve member, and each area corresponds to an independent heat exchanger. The frontal area of the heat exchanger is positively correlated with the wind field effect. The two heat exchangers with the best corresponding wind field effect can form parallel and serial flow paths through the valve assembly to be used as a condensing section, and the heat exchanger with the worst corresponding wind field effect is used as a supercooling section. In the refrigeration mode, the flow path of the heat exchanger is freely switched according to the operation load requirement, so that the heat exchange efficiency is increased.
As shown in fig. 1, the invention provides an outdoor heat exchanger structure, and the outdoor heat exchanger 4 of the invention specifically comprises a gas collecting tube assembly 401, a heat exchanger group, a first liquid collecting tube assembly and a second liquid collecting tube assembly. The upper part of the gas collecting tube assembly 401 is connected with a four-way valve, and can be connected with a compressor or a gas-liquid separator of an air conditioning system through a switching refrigerating and heating mode of the four-way valve, and the gas collecting tube assembly is divided into a first gas collecting tube part, a second gas collecting tube part and a third gas collecting tube part through a first control valve and a second control valve; the heat exchanger group specifically comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, the windward areas of the three heat exchangers are positively correlated with the corresponding wind field effect, specifically, the right side (one side, one end, the other side, the exhaust side, the outlet side and the inlet side of the heat exchanger are all pipeline interfaces) of the first heat exchanger is connected with a first gas collecting pipe part, the right side of the second heat exchanger is connected with a second gas collecting pipe part for convenience in description, the right side of the third heat exchanger is connected with a third gas collecting pipe part, a part of capillary pipelines on the right side of the first liquid collecting pipe assembly are connected with all pipeline interfaces on the left side of the first heat exchanger one by one, the other part of capillary pipelines on the right side of the first liquid collecting pipe assembly are communicated with all pipeline interfaces on the left side of the second heat exchanger one by one, and the capillary pipelines on the right side of the second liquid collecting pipe assembly are communicated with all pipeline interfaces on the left side of the third heat exchanger one by one.
In the outdoor heat exchanger structure of the present invention, the windward areas of the three heat exchangers (the first heat exchanger 4021, the second heat exchanger 4022, and the third heat exchanger 4023) in the heat exchanger group 402 are positively correlated with the corresponding wind field effects, that is, the better the wind field effect is, the larger the windward area of the corresponding heat exchanger is, and the worse the wind field effect is, and the smaller the windward area of the corresponding heat exchanger is. Taking the vertical heat exchanger and the air outlet right above the unit as an example, the effect of the upper wind field is better than that of the lower wind field, and the windward area relationship of the corresponding heat exchangers is that the first heat exchanger 4021 is greater than that of the second heat exchanger 4022 and the third heat exchanger 4023.
In a specific embodiment, each pipeline interface on the left side of the first heat exchanger and the second heat exchanger is branched into two paths, one path is connected with the first liquid collecting pipe assembly, and the other path is connected with the other side of the first heat exchanger and the other side of the second heat exchanger in series through pipelines.
Specifically, the other path is connected with each other through a straight pipe so that the other sides of the first heat exchanger and the second heat exchanger are connected in series.
As shown in fig. 6, in other embodiments, the other path is connected to the second heat exchanger through capillary channels, and the specific capillary channels are divided into multiple groups, each group is connected to a liquid separator, and the liquid separators are further in one-to-one communication with the pipeline interfaces of the second heat exchanger, and can be matched with the throttling parts on the first connecting pipes, so that when the air conditioning unit switches between the cooling mode and the heating mode, both sets of throttling parts can respectively act on the heating mode and the cooling mode, and therefore, the two sets of throttling parts can be independently designed and are not influenced by each other.
In a preferred embodiment, the plurality of pipeline interfaces on the left side of the first heat exchanger are sequentially connected into n groups according to a connection mode with the smallest difference of heat exchange effect, the plurality of pipeline interfaces on the left side of the second heat exchanger are sequentially divided into n groups according to the low heat exchange effect to the high heat exchange effect, n is larger than 1, and each group of pipeline interfaces of the first heat exchanger is sequentially connected with each group of pipeline interfaces of the second heat exchanger in a one-to-one correspondence manner through pipelines.
The connection between the first heat exchanger 4021 and the second heat exchanger 4022 is typically a series connection of flow paths. The typical flow path refers to a connection mode in which the optimal flow path and the worst flow path in the first heat exchanger 4021 are converged (i.e., the difference of heat exchange effects is the smallest), and then the flow path is serially connected to the worst flow path in the second heat exchanger 4022, the second optimal flow path in the first heat exchanger 4021 and the second difference flow path are converged and serially connected, and then the flow path is serially connected to the second difference flow path in the second heat exchanger 4022, and so on, so as to achieve the effect that the outlet temperatures of different serial flow paths are consistent after the refrigerant is serially connected to the second heat exchanger through the first heat exchanger flow path and enters the second heat exchanger for heat exchange.
Specifically, fig. 1 shows the flow path distribution of the vertical heat exchanger, wherein the second heat exchanger is provided with 3 branches (i.e. 3 pipeline interfaces) which are sequentially 1-3 paths from top to bottom, and the first heat exchanger is provided with 12 branches (i.e. 12 pipeline interfaces) which are sequentially 1-12 paths from top to bottom. The 1, 2 paths and 11, 12 paths (i.e. a group of pipeline interfaces) in the first heat exchanger are converged and enter the 3 rd path (i.e. a group of pipeline interfaces) of the second heat exchanger through a first connecting pipe 4033, the 3, 4 paths, 9 and 10 paths in the first heat exchanger are converged and enter the 2 nd path of the second heat exchanger through a second connecting pipe 4034, and the 5, 6 paths, 7 and 8 paths in the first heat exchanger are converged and enter the 1 st path of the second heat exchanger through a third connecting pipe 4035. The shunt arrangement is not limited to the description herein, and specific collocation aims at keeping the shunt temperatures consistent when the serial flow paths flow out after heat exchange of the second heat exchanger.
In a preferred embodiment, each group of pipeline interfaces of the first heat exchanger and each group of pipeline interfaces of the second heat exchanger are straight pipes which are connected in sequence through pipelines in a one-to-one correspondence manner.
In a preferred embodiment, the first header portion is connected to one end of the first heat exchanger 4021 by a straight tube, and the first heat exchanger 4021 is connected to the first header assembly 4031 by a capillary tube;
The second gas collecting pipe part is connected with one end of a second heat exchanger 4022 through a straight pipe, and the other end of the second heat exchanger 4022 is connected with a second liquid collecting pipe assembly 4032 through a capillary pipe;
the third header portion is connected to one end of the third heat exchanger 4023 through a straight tube, and the other end of the third heat exchanger 4023 is connected to the third header assembly through a capillary tube.
The connecting pipes between the gas collecting pipe assembly 401 and the heat exchanger group 402 are connected by straight pipes without throttling and depressurization, and the connecting pipes between the first heat exchanger, the second heat exchanger, the third heat exchanger and the liquid collecting pipe assembly 403 (the first liquid collecting pipe assembly 4031, the second liquid collecting pipe assembly 4032 and the third liquid collecting pipe assembly) in the heat exchanger group 402 are connected by capillary pipes, so that the throttling and depressurization functions are realized.
The left side of the outdoor heat exchanger is provided with a first connecting pipe 5 which is used for being connected with an indoor heat exchanger of an air conditioner, the first connecting pipe 5 is provided with a throttling part 406, the first connecting pipe 5 is branched into two branch pipelines, and the two branch pipelines are respectively connected with the other sides of the first liquid collecting pipe component and the second liquid collecting pipe component.
The outdoor heat exchanger structure further comprises a third control valve 404 and a fourth control valve 405, wherein one end of the third control valve 404 is communicated with the other sides of the first heat exchanger 4021 and the second heat exchanger 4022 through a pipeline, the other end of the third control valve 404 is connected with the gas collecting pipe assembly 401, a connection point of the third control valve 404 is located between the second control valve 4012 and the third gas collecting pipe portion, and the fourth control valve 405 is arranged on a branch pipeline of the main pipeline connected with the first liquid collecting pipe assembly. The outdoor heat exchanger structure of the present invention realizes series and parallel flow paths of the first heat exchanger 4021 and the second heat exchanger 4022 by the third control valve 404, the fourth control valve 405, and the first control valve 4011.
In a specific embodiment, the fourth control valve may be a check valve or an on-off valve, and the flow direction of the check valve is consistent with the direction of the heating flow path, that is, the refrigerant directly enters the first header assembly 4031 from the throttle member 406 (flow rate adjusting valve), but cannot enter the throttle member 406 from the first header assembly 4031.
In a specific embodiment, the third control valve is a flow regulating valve or an on-off valve.
If a valve with a flow regulating function is selected for the third control valve, a second refrigeration serial flow path exists, as shown in fig. 4. The difference with fig. 3 is that one path of the refrigerant after heat exchange of the first heat exchanger can directly enter the second heat exchanger, the other path of the refrigerant enters the third heat exchanger through the third control valve, and the flow entering the third controller is controlled through the third control valve, so that the circulation rate of the refrigerant can be accelerated, and the refrigerant is suitable for the requirements of different medium and low loads.
The invention also provides an air conditioning system which comprises the outdoor heat exchanger structure. Therefore, the air conditioning system of the present invention has all the advantages achieved by the outdoor heat exchanger structure.
In one specific embodiment, the air conditioning system comprises a gas-liquid separator 1, a compressor 2 and a four-way valve 3, wherein the upper end of a gas collecting pipe assembly 401 of the outdoor heat exchanger 4 is connected with the four-way valve 3, and a second connecting pipe 6 connected with the four-way valve is further arranged for connecting the indoor heat exchanger. And the exhaust side of the compressor is communicated with the gas collecting tube assembly through the switching four-way valve, or the gas collecting tube assembly is communicated with the gas-liquid separator.
The cooling mode refrigerant flow path of the air conditioning system of the present invention is as follows:
when the air conditioner is judged to be in high load operation, a refrigerating parallel flow path is adopted, as shown in fig. 2.
When the air conditioner is judged to be in the medium-low load operation, a refrigeration serial flow path is adopted, as shown in fig. 3.
Alternatively, a second refrigeration series flow path may be used when the air conditioner is operating at medium to low loads, as shown in fig. 4.
When the air conditioning system operates in a refrigeration parallel mode, namely a refrigeration parallel flow path, specifically, a parallel flow path is formed by the first heat exchanger 4021 and the second heat exchanger 4022, and the liquid collecting pipe sides of the two heat exchangers are communicated and converged through straight pipe sections and then are connected with the third heat exchanger 4023 in series. The first heat exchanger 4021 and the second heat exchanger 4022 do not need to pass through a throttling component before entering the third heat exchanger 4023, so that pressure loss caused by the throttling component is reduced. The specific control valve member is shown in fig. 2:
The first control valve 4011 is opened, the second control valve 4012 is closed, the third control valve 404 is opened, and the fourth control valve 405 is closed. The high-temperature high-pressure gaseous refrigerant enters the first heat exchanger and the second heat exchanger to exchange heat at the same time through the gas collecting pipe, is converged into the third heat exchanger through the straight pipe section to further exchange heat and supercool, and forms a larger supercooling degree to enter the indoor side through the liquid side pipeline.
When the air conditioning system operates in a refrigeration series mode, namely, a refrigeration series flow path, specifically, the first heat exchanger 4021, the second heat exchanger 4022 and the third heat exchanger 4023 form series connection. The first heat exchanger 4021 does not need to pass through a throttling component before entering the second heat exchanger 4022, so that pressure loss caused by the throttling component is reduced. The specific control valve member is shown in fig. 3:
The first control valve 4011 is closed, the second control valve 4012 is opened, the third control valve 404 is closed, and the fourth control valve 405 is closed. The high-temperature high-pressure gaseous refrigerant sequentially enters the first heat exchanger, the second heat exchanger, the heat exchange and the third heat exchanger through the gas collecting pipe, and a larger supercooling degree is formed and enters the indoor side through the liquid side pipeline.
If a valve with a flow regulating function is selected for the third control valve 404, then a second refrigeration series flow path exists, as shown in fig. 4. The difference with fig. 3 is that one path of the refrigerant after heat exchange of the first heat exchanger can directly enter the second heat exchanger, the other path of the refrigerant enters the third heat exchanger through the third control valve, and the flow entering the third controller is controlled through the third control valve, so that the circulation rate of the refrigerant can be accelerated, and the refrigerant is suitable for the requirements of different medium and low loads.
When the air conditioning system operates in a heating mode, namely a heating flow path, the three heat exchangers are all evaporation sides and participate in evaporation of the refrigerant, so that the evaporation area is enlarged. The specific control valve member is shown in fig. 5:
The first control valve 4011 is opened, the second control valve 4012 is opened, the third control valve 404 is closed, and the fourth control valve 405 is opened. The medium-pressure refrigerant passing through the indoor side during heating is subjected to liquid separation through the liquid side throttling component and enters the first heat exchanger, the second heat exchanger and the third heat exchanger simultaneously, evaporation of the refrigerant is realized, and the evaporated gaseous refrigerant returns to the air suction side through the air side pipeline.
The operation load is divided into three areas under the refrigeration mode, when the load demand is maximum, the upper two heat exchange areas are switched into parallel flow paths, when the load demand is medium, the upper two heat exchange areas are switched into series connection, the second heat exchanger and the third heat exchanger serving as a supercooling section area are switched into parallel connection and series connection double flow paths, and when the load demand is minimum, the three heat exchangers are switched into pure series connection structures. The heat exchanger has various forms and is suitable for different load demands. And no matter what flow path is, the refrigeration is countercurrent heat exchange, the flow direction of the refrigerant is opposite to the outdoor side wind direction, and the full countercurrent heat exchange can be realized, so that the heat exchange efficiency is improved.
It is noted that the above-mentioned terms are used merely to describe specific embodiments, and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present application, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.
Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. An outdoor heat exchanger structure, comprising:
the gas collecting tube assembly is divided into a first gas collecting tube part, a second gas collecting tube part and a third gas collecting tube part through a first control valve and a second control valve;
The heat exchanger group comprises a first heat exchanger, one side of which is connected with the first gas collecting pipe part, one side of which is connected with the second heat exchanger of the second gas collecting pipe part, one side of which is connected with the third heat exchanger of the third gas collecting pipe part, and the windward areas of the three heat exchangers and the wind field effects corresponding to the three heat exchangers form positive correlation;
A part of pipelines on one side of the first liquid collecting pipe assembly are connected with the other side of the first heat exchanger, and the other part of pipelines are connected with the other side of the second heat exchanger;
one side of the second liquid collecting pipe assembly is connected with the other side of the third heat exchanger;
The heat exchangers with the best corresponding wind field effect are used as the cooling sections, and the heat exchangers with the worst wind field effect are used as the supercooling sections, and the flow paths of the heat exchangers are freely switched according to the operation load requirements in a refrigerating mode.
2. The outdoor heat exchanger structure according to claim 1, wherein the other side of the first heat exchanger and the second heat exchanger is branched into two paths, one path is connected to the first header assembly, and the other path is connected to the other side of the first heat exchanger and the second heat exchanger through a pipe.
3. The outdoor heat exchanger structure according to claim 2, wherein the plurality of pipe interfaces at the other side of the first heat exchanger are sequentially divided into n groups according to heat exchange effect from high to low, the plurality of pipe interfaces at the other side of the second heat exchanger are sequentially divided into n groups according to heat exchange effect from low to high, and n is greater than 1, and each group of pipe interfaces of the first heat exchanger is sequentially connected with each group of pipe interfaces of the second heat exchanger through a pipe in a one-to-one correspondence manner.
4. The outdoor heat exchanger structure according to claim 2, wherein the pipes connected in series to each other at the other side of the first heat exchanger and the second heat exchanger are straight pipes.
5. The outdoor heat exchanger structure according to claim 1, further comprising a first connection pipe connecting the indoor heat exchanger side, wherein a throttle member is provided on the first connection pipe, and the first connection pipe is branched into two branch pipes, which are connected to the other sides of the first liquid collecting pipe assembly and the second liquid collecting pipe assembly, respectively.
6. The outdoor heat exchanger structure according to claim 5, further comprising a third control valve and a fourth control valve, wherein one end of the third control valve is communicated with the other sides of the first heat exchanger and the second heat exchanger through a pipe, the other end of the third control valve is connected with the gas collecting pipe assembly, the connection point is located between the second control valve and the third gas collecting pipe portion, and the fourth control valve is arranged on a branch pipe of the first connection pipe connected with the first gas collecting pipe assembly.
7. The outdoor heat exchanger structure according to claim 6, wherein the fourth control valve is a check valve or an on-off valve, and the third control valve is a flow rate adjusting valve or an on-off valve.
8. An air conditioning system comprising the outdoor heat exchanger structure of any one of claims 1-7.
9. The air conditioning system of claim 8, wherein the air conditioning system comprises a gas-liquid separator, a compressor, and a four-way valve, the header assembly being connected to the four-way valve.
10. The air conditioning system of claim 9, wherein when the air conditioning system is operating in a parallel cooling mode, the four-way valve is switched to place the discharge side of the compressor in communication with the header assembly and to open the first control valve, the third control valve, and to close the second control valve and the fourth control valve.
11. The air conditioning system of claim 9, wherein when the air conditioning system is operated in a cooling series mode, the four-way valve is switched to allow the exhaust side of the compressor to communicate with the header assembly, the second control valve is opened, the first control valve and the fourth control valve are closed, the third control valve is closed, or the opening of the third control valve is adjusted according to a load demand.
12. The air conditioning system of claim 9, wherein when the air conditioning system is operating in a heating mode, the four-way valve is switched to allow the header assembly to communicate with the gas-liquid separator, the first control valve, the second control valve, and the fourth control valve are opened, and the third control valve is closed.
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| CN202211552340.6A CN115789796B (en) | 2022-12-05 | 2022-12-05 | Outdoor heat exchanger structure and air conditioning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN219045775U (en) * | 2022-12-05 | 2023-05-19 | 珠海格力电器股份有限公司 | Outdoor heat exchanger structure and air conditioning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0448112A (en) * | 1990-06-14 | 1992-02-18 | Mitsubishi Electric Corp | heater |
| JPH08219561A (en) * | 1995-02-08 | 1996-08-30 | Sanyo Electric Co Ltd | Engine driven type air conditioning apparatus |
| GB0025279D0 (en) * | 2000-10-14 | 2000-11-29 | Univ Loughborough | Cooling system |
| CN102914089B (en) * | 2012-11-08 | 2014-10-15 | 南京师范大学 | Multi-branch outdoor heat exchanger with synchronous heat exchange function |
| CN114127493B (en) * | 2019-07-22 | 2023-09-08 | 三菱电机株式会社 | Air conditioner |
| CN112923437B (en) * | 2019-12-06 | 2023-03-14 | 广东美的白色家电技术创新中心有限公司 | Indoor unit of air conditioner |
| CN114857679B (en) * | 2022-05-26 | 2023-08-18 | 宁波奥克斯电气股份有限公司 | Condenser, outdoor unit and air conditioner |
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| CN219045775U (en) * | 2022-12-05 | 2023-05-19 | 珠海格力电器股份有限公司 | Outdoor heat exchanger structure and air conditioning system |
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