CN214039044U - Heat exchange device and air conditioner - Google Patents
Heat exchange device and air conditioner Download PDFInfo
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- CN214039044U CN214039044U CN202022427617.5U CN202022427617U CN214039044U CN 214039044 U CN214039044 U CN 214039044U CN 202022427617 U CN202022427617 U CN 202022427617U CN 214039044 U CN214039044 U CN 214039044U
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
Abstract
The application relates to the technical field of air conditioner heat exchange and discloses a heat exchange device. The heat exchange device comprises a first heat exchange passage, a second heat exchange passage, a shunt passage, a third heat exchange passage, a first check valve and a second check valve; the first heat exchange path comprises at least two heat exchange branches connected in parallel; the second heat exchange passage is connected with the first heat exchange passage in parallel; the second heat exchange path comprises a first pipe section and a second pipe section which are connected in series; the shunt passage is connected in series with the second pipe section; the third heat exchange passage is connected with the second pipe section and the shunt passage in parallel; the first one-way valve is arranged on the first pipe section of the second heat exchange passage; the second check valve is arranged on the shunt passage. During refrigeration operation, a refrigerant sequentially passes through the first heat exchange passage, the second pipe section and the third heat exchange passage to realize condensation and supercooling; during heating operation, the refrigerant circulates through the first heat exchange passage, the second pipe section and the third heat exchange passage, and pressure loss is effectively reduced. The application also discloses an air conditioner.
Description
Technical Field
The application relates to the technical field of air conditioner heat exchange, for example to a heat exchange device and an air conditioner.
Background
At present, in the air conditioner, during the cooling operation and the heating operation, the paths of the heat exchange pipelines through which the refrigerant flows in the heat exchange device are opposite in direction and the same in length. Taking a heat exchanger in an air conditioner outdoor unit as an example, when the air conditioner is in a refrigeration running state, the air conditioner works as a condenser, and because the heat exchange section has a supercooling requirement at the moment, generally, a subcooler is connected in series behind the heat exchanger; the subcooler is arranged behind the heat exchanger of the air conditioner outdoor unit, when the air conditioner is in heating operation, the air conditioner works as an evaporator, at the moment, the refrigerant flows through the subcooler before flowing through the heat exchange pipeline, and at the moment, the refrigerant passes through the subcooler to cause the problem of large pressure loss in the refrigerant pipeline.
SUMMERY OF THE UTILITY MODEL
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a heat exchange device and an air conditioner, so as to solve the problem that pressure loss in a refrigerant pipeline is large due to the fact that a refrigerant passes through a subcooler in a heating running state.
In some embodiments, the heat exchange device comprises a first heat exchange passage, a second heat exchange passage, a shunt passage, a third heat exchange passage, and a first check valve and a second check valve; the second heat exchange passage is connected with the first heat exchange passage in parallel; the first heat exchange path comprises at least two heat exchange branches connected in parallel; the second heat exchange path comprises a first pipe section and a second pipe section which are connected in series; the shunt passage is connected in series with a second pipe section of the second heat exchange passage; the third heat exchange passage is connected with the second pipe section of the second heat exchange passage and the shunt passage in parallel; the first check valve is arranged at the first pipe section of the second heat exchange passage, and the conduction direction of the first check valve is defined as that the first check valve flows from the serial connection node of the second pipe section and the first pipe section to the parallel connection node of the second heat exchange passage and the first heat exchange passage; the second check valve is arranged on the shunt passage, and the conduction direction of the second check valve is defined to be from the parallel connection node of the shunt passage and the third heat exchange passage to the series connection node of the shunt passage and the second heat exchange passage.
In some embodiments, the air conditioner comprises the heat exchange device.
The heat exchange device and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
the heat exchange device is arranged on an air conditioner outdoor unit, so that the refrigerant sequentially passes through a second pipe section of the first heat exchange passage, a second heat exchange passage and the third heat exchange passage in the refrigerating operation process of the air conditioner, and condensation and supercooling are realized; in the heating operation process of the air conditioner, the refrigerant is divided to flow through the first heat exchange passage, the second pipe section of the second heat exchange passage and the third heat exchange passage to form a parallel passage, so that the pressure loss in the refrigerant pipeline is effectively reduced, and the heat exchange effect of the air conditioner is further ensured.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic structural diagram of a heat exchange device provided in an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another heat exchange device provided by the embodiment of the disclosure;
FIG. 3 is a schematic structural diagram of another heat exchange device provided by the embodiment of the disclosure;
FIG. 4 is a schematic structural diagram of another heat exchange device provided by the embodiment of the disclosure;
FIG. 5 is a schematic structural diagram of a heat exchange tube bank provided in an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of another heat exchange tube bank provided by the embodiment of the disclosure;
fig. 7 is a schematic structural diagram of another heat exchange tube bank provided by the embodiment of the disclosure;
fig. 8 is a schematic structural diagram of another heat exchange tube set provided by the embodiment of the disclosure.
Reference numerals:
100. a first heat exchange path; 101. a first heat exchange tube set; 110. a first heat exchange branch; 120. a second heat exchange branch; 200. a second heat exchange path; 201. a second heat exchange tube set; 210. a first tube section; 220. a second tube section; 300. a third heat exchange path; 400. a shunt path; 500. a first check valve; 600. a second one-way valve; 710. a refrigerant main circuit; 701. a first flow-through node; 702. a second pass-through node; 703. a third flow-through node; 704. a fourth flow-through node; 720. a heat exchange pipe; 730. and (4) an supercooling pipe group.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
As shown in fig. 1 to 4, an embodiment of the present disclosure provides a heat exchange device, which includes a first heat exchange path 100, a second heat exchange path 200, a shunt path 400, a third heat exchange path 300, and a first check valve 500 and a second check valve 600; the second heat exchange path 200 is connected in parallel with the first heat exchange path 100; second heat exchange path 200 includes a first tube section 210 and a second tube section 220 connected in series; the shunt passage 400 is connected in series to the second tube section 220 of the second heat exchange passage 200; the third heat exchange passage 300 is connected in parallel with the second tube segment 220 and the flow dividing passage 400 of the second heat exchange passage 200; the first check valve 500 is disposed on the first pipe section 210 of the second heat exchange path 200, and the conduction direction of the first check valve 500 is defined as flowing from the serial connection node of the second pipe section 220 and the first pipe section 210 to the parallel connection node of the second heat exchange path 200 and the first heat exchange path 100; the second check valve 600 is provided in the branch passage 400, and the conduction direction of the second check valve 600 is defined to flow from the parallel connection node of the branch passage 400 and the third heat exchange passage 300 to the series connection node of the branch passage 400 and the second heat exchange passage 200.
By adopting the heat exchange device provided by the embodiment of the disclosure, the paths through which the refrigerant flows are different in the cooling operation state and the heating operation state of the air conditioner can be realized by the design of the first heat exchange passage 100, the second heat exchange passage 200, the shunt passage 400, the third heat exchange passage 300, the first check valve 500 and the second check valve 600, and the heat exchange device is installed on an air conditioner outdoor unit, so that the refrigerant sequentially passes through the first heat exchange passage 100, the second pipe section 220 of the second heat exchange passage 200 and the third heat exchange passage 300 in the cooling operation process of the air conditioner, and the condensation and supercooling effects are realized; in the heating operation process of the air conditioner, the refrigerant separately flows through the first heat exchange passage 100, the second pipe section 220 of the second heat exchange passage 200 and the third heat exchange passage 300 to form a parallel passage, so that the pressure loss in the refrigerant pipeline is effectively reduced, and the heat exchange effect of the air conditioner is further ensured.
In this context, the heat exchanger may be installed as a heat exchanger in an outdoor unit of an air conditioner, and may be used as an outdoor heat exchanger for exchanging heat with air in an outdoor environment. In the embodiment of the present disclosure, the heat exchanger is installed in an outdoor unit of an air conditioner as an example, and other embodiments of the present application may also install the heat exchanger in other devices for heat exchange.
Generally, an air conditioner has at least two functions, i.e., a cooling operation mode and a heating operation mode. Under the working condition of refrigeration operation, an indoor heat exchanger in an indoor unit of the air conditioner serves as an evaporator, and an outdoor heat exchanger in an outdoor unit of the air conditioner serves as a condenser. In the process that the refrigerant in the outdoor heat exchanger working as the condenser flows from the liquid inlet of the outdoor heat exchanger to the liquid outlet of the outdoor heat exchanger, the refrigerant is condensed to release heat and gradually changes from a gas state to a liquid state. According to the principle of continuity of flow, the mass and the flow of the refrigerant in the refrigerant pipeline are constant along the flowing direction of the refrigerant, and as the specific volume of the gaseous refrigerant is multiple times of that of the liquid refrigerant, the volume of the refrigerant is gradually reduced along with the flowing of the refrigerant in the outdoor heat exchanger, so that the flow velocity of the refrigerant is also gradually reduced. And according to a heat exchange coefficient equation alpha of turbulent flow of the refrigerant in the pipe, wherein the heat exchange coefficient is proportional to the power of 0.8 of the flow velocity W of the refrigerant. Therefore, when the refrigerant flows to the liquid outlet of the outdoor heat exchanger, the flow velocity of the refrigerant is reduced compared with that of the liquid inlet of the outdoor heat exchanger, and the heat exchange coefficient is reduced accordingly, so that the heat exchange effect is poor.
Here, regarding the specific volume of the gaseous refrigerant being several times that of the liquid refrigerant, taking refrigerant R410A as an example, the saturated vapor specific volume at 40 ℃ is 0.01003m3Kg, saturated liquidSpecific volume of 0.00106m3In kg, the specific volume in the gaseous state is 9.5 times that in the liquid state, i.e. the density in the liquid state is 9.5 times that in the gaseous state.
In the related art, in order to deal with the problem that the flow speed of the refrigerant of the outdoor heat exchanger is reduced to affect the heat exchange effect due to the fact that the refrigerant is changed from a gas state to a liquid state under the refrigeration working condition, a subcooler is generally connected in series with a liquid outlet of the outdoor heat exchanger to improve the situation.
In the implementation process of adding the subcooler, the subcooler is found to be high in cost, and the structural design that the subcooler is connected in series with the liquid outlet of the outdoor heat exchanger is adopted, so that under the heating working condition of the air conditioner, the refrigerant circulates along opposite paths, namely the refrigerant entering the outdoor unit of the air conditioner passes through the subcooler and then passes through the outdoor heat exchanger, the pressure loss of the system is increased, part of heat exchange performance is offset in the process, and the efficiency of the heat exchanger of the air conditioner is reduced under the heating working condition. In addition, when the air conditioner is in a low-temperature heating state, a low-temperature low-pressure refrigerant flows in the heat exchange pipeline of the outdoor heat exchanger, and outside the heat exchange pipeline, because the fan drives the air flow to pass through the heat exchange pipeline, the air volume is unevenly distributed, the frosting phenomenon can occur easily on the heat exchange pipeline with smaller air volume, and the frosting can further cause the heat exchange effect of the heat exchange pipeline to be poor, so that the frosting is more and more serious.
The heat exchange device provided by the application is installed on an outdoor unit of an air conditioner, can replace a heat exchanger and a subcooler in the related art, and under a refrigeration working condition, a refrigerant enters the heat exchange device from a first circulation node 701, flows through the first heat exchange passage 100 firstly, then flows through the second pipe section 220 of the second heat exchange passage 200, then flows through the third heat exchange passage 300, and finally flows out of the heat exchange device from a fourth circulation node 704. The refrigerant circulation process can ensure the heat exchange process of condensation and heat release, and the process that the refrigerant flows through the second pipe section 220 of the second heat exchange passage 200 and the third heat exchange passage 300 can be used as the supercooling stage of the heat exchange of the air conditioner outdoor unit as the refrigerant passes through the three heat exchange passages in sequence, so that the refrigerant is fully cooled in the air conditioner outdoor unit to reach lower temperature, and the heat exchange efficiency and the heat exchange effect of the air conditioner under the refrigeration working condition are ensured.
In a heating condition, refrigerant enters the heat exchange device from the fourth circulation node 704, and flows out of the heat exchange device from the first circulation node 701 through the first heat exchange passage 100, the second tube segment 220 of the second heat exchange passage 200, and the third heat exchange passage 300. At this time, the second tube segment 220 and the third heat exchange path 300 of the second heat exchange path 200 through which the refrigerant flows are connected in parallel with the first heat exchange path 100, and at this time, the flow path of the refrigerant is not the reverse flow of the same refrigerant flow path under the refrigeration working condition, but the refrigerant of a plurality of flow paths is divided by the arrangement of the first check valve 500 and the second check valve 600, so that a parallel path is formed, the length of the pipeline through which the refrigerant flows is shortened, the pressure loss of the refrigerant reversely passing through the second tube segment 220 and the third heat exchange path 300 of the second heat exchange path 200 is effectively reduced, the heat exchange area of the outdoor heat exchanger is increased without causing extra pressure loss, and the heat exchange effect of the air conditioner is improved; under the working condition of low-temperature heating, the heat exchange passages can be more uniform, and the frosting phenomenon of the heat exchange pipeline positioned on the outdoor side can be effectively relieved.
By adopting the heat exchange device provided by the embodiment of the disclosure, the complexity of the system is effectively reduced, and the assembly in the production process of the air conditioner is facilitated; the installation space is reduced, and the space utilization rate in the air conditioner is improved; meanwhile, the requirements of a refrigeration working condition and a heating working condition are considered, so that the supercooling effect of the condenser can be realized, and the pressure loss in a refrigerant pipeline of the evaporator can be reduced, so that the heat exchange efficiency is improved.
Here, a refrigerant line to which the heat exchange device is attached is used as the refrigerant main line 710; a connection node of the refrigeration main and the first heat exchange path 100 is used as a first circulation node 701; a connection node of the first heat exchange passage 100 and the flow dividing passage 400 is set as a second flow passage node 702; the connection node of first tube segment 210 and second tube segment 220 of second heat exchange passage 200 is taken as third flow-through node 703; the connection node between the third heat exchange path 300 and the refrigerant main path 710 is defined as a fourth flow node 704. The conducting direction of the first check valve 500 is the direction from the third flow-through node 703 to the first flow-through node 701; the second check valve 600 is turned on in a direction from the fourth flow node 704 to the second flow node 702.
Optionally, the first heat exchange circuit 100 comprises a first heat exchange tube bank 101; the second tube section 220 of the second heat exchange path 200 includes a second heat exchange tube set 201 having a plurality of heat exchange tubes; the third heat exchange path 300 includes a supercooling tube bank 730 having a plurality of heat exchange tubes. That is, the heat exchange device further includes a first heat exchange tube bank 101, a second heat exchange tube bank 201, and a supercooling tube bank 730; wherein the first heat exchange tube group 101 is disposed in the first heat exchange path 100; the second heat exchange tube group 201 is disposed at the second tube section 220 of the second heat exchange path 200; the supercooling pipe group 730 is disposed in the third heat exchange path 300.
The embodiment of the present disclosure takes the refrigerant main 710 in which the heat exchanger is installed in the outdoor unit of the air conditioner as an example.
Under the condition that the system operates under a refrigeration working condition, the heat exchange device is used as a condenser of the heat exchange system. The refrigerant in the refrigerant main 710 enters the heat exchanger through the first flow node 701.
The refrigerant flows to the first flow node 701, at this time, two flow paths communicated with the first flow node 701 are provided, one flow path is the second heat exchange path 200, but since the first pipe section 210 of the second heat exchange path 200 is provided with the first check valve 500, the conducting direction of the first check valve 500 is the direction from the third flow node 703 to the first flow node 701, the refrigerant cannot flow through the first pipe section 210 of the second heat exchange path 200 along the direction from the first flow node 701 to the third flow node 703; the other is the first heat exchange path 100, and the refrigerant can flow from the first flow node 701, through the first heat exchange path 100, and to the second flow node 702.
The refrigerant flows to the second flow node 702, and at this time, two flow paths communicating with the second flow node 702 are provided, one flow path being the branch flow path 400, but since the branch flow path 400 is provided with the second check valve 600, the direction of conduction of the second check valve 600 is the direction from the fourth flow node 704 to the second flow node 702, the refrigerant cannot pass through the branch flow path 400 in the direction from the second flow node 702 to the fourth flow node 704; the other is the second tube segment 220 of the second heat exchange path 200, and the refrigerant may flow from the second flow-through node 702, through the second tube segment 220 of the second heat exchange path 200, and to the third flow-through node 703.
The refrigerant flows to the third flow-through node 703, and at this time, two flow paths communicating with the third flow-through node 703 are provided, one flow path being the first tube segment 210 of the second heat exchange path 200, but the refrigerant header 710 is applied with a pressure at the first flow-through node 701, through which the refrigerant cannot pass in the reverse direction, and therefore, the refrigerant cannot pass through the first tube segment 210 of the second heat exchange path 200 in the direction of the first flow-through node 701 along the third flow-through node 703; the other is a third heat exchange path 300, and the refrigerant may flow from the third flow-through node 703, through the third heat exchange path 300, to the fourth flow-through node 704, and then flow out of the heat exchange device from the fourth flow-through node 704, and enter the refrigerant main 710.
The circulation path of the refrigerant passing through the heat exchange device is as follows: the refrigerant enters the heat exchange device from the first circulation node 701, sequentially passes through the first heat exchange passage 100, the second tube section 220 of the second heat exchange passage 200 and the third heat exchange passage 300, finally flows to the fourth circulation node 704, and then flows out of the heat exchange device from the fourth circulation node 704.
Under the refrigeration working condition, the refrigerant passes through the heat exchange action of the first heat exchange tube group 101, the second heat exchange tube group 201 and the supercooling tube group 730 in sequence, so that the refrigerant is fully cooled at the outdoor unit of the air conditioner to reach a lower temperature, the heat exchange efficiency is ensured, and a better heat exchange effect is realized.
Under the condition that the system operates under a heating working condition, the heat exchange device is used as an evaporator of the heat exchange system. The refrigerant in the refrigerant main line 710 enters the heat exchanger through the fourth flow node 704.
The refrigerant flows to the fourth flow node 704, and at this time, two flow paths communicating with the fourth flow node 704 are provided, one flow path is the third heat exchange path 300, and the refrigerant can flow to the third flow node 703 through the third heat exchange path 300. At this time, since the on direction of the first check valve 500 is the direction from the third flow node 703 to the first flow node 701, the refrigerant may pass through the first tube segment 210 of the second heat exchange path 200 in the direction from the third flow node 703 to the first flow node 701 and flow to the first flow node 701. In this way, the flow path of the refrigerant passing through the fourth flow node 704 and the first tube section 210 of the second heat exchange path 200 in this order through the third heat exchange path 300 can be defined as the first path.
The other flow path communicating with the fourth flow node 704 is the diversion path 400; since the second check valve 600 is provided in the branch passage 400, the second check valve 600 is communicated in a direction from the fourth flow node 704 toward the second flow node 702, and the refrigerant can pass through the branch passage 400 in a direction from the fourth flow node 704 toward the second flow node 702. In this case, two flow paths communicating with the second flow node 702 are provided, one is the first heat exchange path 100, and the refrigerant can flow to the first flow node 701 through the first heat exchange path 100. In this way, the refrigerant can pass through the branch passage and the flow passage of the first heat exchange passage 100 in this order from the fourth flow node 704 as the second passage.
The other flow path communicated with the second flow-through node 702 is a second heat exchange path 200; at this time, the refrigerant may pass through the second tube segment 220 of the second heat exchange passage 200 from the second flow node 702, reach the third flow node 703, and then pass through the first tube segment 210 of the second heat exchange passage 200 in the direction from the third flow node 703 to the first flow node 701, and flow to the first flow node 701. In this way, the flow path of the refrigerant passing through the fourth flow node 704, the branch flow path 400, the second tube segment 220 of the second heat exchange path 200, and the first tube segment 210 of the second heat exchange path 200 in this order can be made the third path.
Under the heating condition, the refrigerant passes through the heat exchange device through the first path, the second path and the third path respectively to form three parallel paths, the length of a pipeline through which the refrigerant flows is shortened, the pressure loss of the refrigerant reversely passing through the second pipe section 220 of the second heat exchange path 200 and the third heat exchange path 300 is effectively reduced, the heat exchange area of the outdoor heat exchanger is increased under the condition of not causing extra pressure loss, the heat exchange efficiency is ensured, and a better heat exchange effect is realized; effectively alleviate the frosting phenomenon of the heat exchange pipeline at the outdoor side under the low-temperature heating working condition.
Optionally, the first heat exchange tube set 101 includes at least two heat exchange branches connected in parallel; the first heat exchange bank 101 may include a first heat exchange branch 110 and a second heat exchange branch 120. Therefore, no matter under the refrigeration working condition or the heating working condition, the refrigerant can respectively pass through the first heat exchange branch circuit 110 and the second heat exchange branch circuit 120 to form a parallel passage, so that the contact area between a pipeline for heat exchange and air is increased, the heat exchange efficiency of the heat exchange device is improved, and a better heat exchange effect is realized.
Alternatively, the first heat exchange branch 110, the second heat exchange branch 120, the second heat exchange tube set 201, and the supercooling tube set 730 may be disposed in different areas in the casing of the outdoor unit of the air conditioner. The setting position of the first heat exchange branch 110 is taken as a first area, the setting position of the second heat exchange branch 120 is taken as a second area, the setting position of the second heat exchange tube set 201 is taken as a third area, and the setting position of the supercooling tube set 730 is taken as a fourth area. Therefore, the space utilization rate in the shell of the air conditioner outdoor unit can be improved, and the heat exchange efficiency in each area can be improved.
Optionally, each heat exchange branch comprises one or more rows of heat exchange tubes connected in series. Wherein, a row of heat exchange tubes of series connection can form a row of section of jurisdiction that is used for the heat transfer, and the heat exchange tubes of multirow series connection can form the section of jurisdiction that the multirow is used for the heat transfer. The arrangement of the segments is not particularly limited.
Alternatively, each heat exchange branch may be provided with a heat exchange tube bank, which, as shown in connection with fig. 5-8, may comprise a plurality of heat exchange tubes 720 connected in series.
As shown in fig. 5, the plurality of heat exchange tubes 720 may be distributed in a single row and connected in series to form a heat exchange tube set in a single row configuration.
As shown in fig. 6 and 7, the plurality of heat exchange tubes 720 may be distributed in two rows and connected in series to form a heat exchange tube set in a two-row arrangement.
As shown in fig. 8, the plurality of heat exchange tubes 720 may be distributed in two rows, wherein one portion is connected in series, the other portion is connected in series, and the two portions are connected in parallel to form a heat exchange tube set with a two-row arrangement structure. The heat exchange tubes 720 may be connected in series with the heat exchange tubes 720 adjacent to each other, or may be connected in series with the heat exchange tubes 720 not adjacent to each other.
Optionally, the connection manner of the plurality of heat exchange tubes 720 in the supercooling tube bank 730 may be the same as the connection manner of the heat exchange tube bank, or may be different from the connection manner of the heat exchange tube bank, which is not specifically limited herein.
Optionally, the plurality of heat exchange tubes 720 of the subcooling tube bank 730 are connected in series. Therefore, under the refrigeration working condition, the series connection of the supercooling pipe group 730 can increase the length of the supercooling section through which the refrigerant passes, so that the refrigerant is fully cooled in the outdoor unit of the air conditioner to reach a lower temperature, thereby ensuring the heat exchange efficiency and realizing a better heat exchange effect; under the heating condition, the series connection of the supercooling pipe group 730 is used as one of the parallel paths, so that the heat exchange area of the heat exchange device can be increased under the condition of not causing extra pressure loss, the heat exchange efficiency is ensured, and a better heat exchange effect is realized.
Optionally, the number of the heat exchange tubes 720 of the second heat exchange tube set 201 is less than or equal to the number of the heat exchange tubes 720 of the first heat exchange tube set 101; the number of the heat exchange tubes 720 of the second heat exchange tube group 201 is less than or equal to the number of the heat exchange tubes 720 of the supercooling tube group 730. Therefore, under the refrigeration working condition, the refrigerant can be fully cooled in the supercooling pipe group 730, and the refrigeration efficiency is improved; under the heating condition, the refrigerant flow passing through the first path and the third path is equivalent, multi-path shunting is better realized, the pressure loss is reduced, and the heating efficiency is improved.
Alternatively, the first heat exchange tube bank 101, the second heat exchange tube bank 201, and the supercooling tube bank 730 may constitute a single column arrangement. Therefore, the first heat exchange tube group 101, the second heat exchange tube group 201 and the supercooling tube group 730 are sequentially arranged end to end in the shell of the air conditioner outdoor unit, so that the distance from the air outlet of the fan to the air outlet of the air conditioner can be reduced, and the heat exchange efficiency is improved.
Optionally, the first heat exchange tube bank 101, the second heat exchange tube bank 201, and the supercooling tube bank 730 may also constitute a multi-column arrangement. In this way, the first heat exchange tube group 101, the second heat exchange tube group 201, and the supercooling tube group 730 are arranged in parallel in the casing of the outdoor unit, so that the space in the casing of the outdoor unit occupied by the heat exchange device can be reduced, and the utilization rate of the space in the casing of the outdoor unit can be improved.
Alternatively, the first heat exchange tube set 101 may include two sets of dual heat exchange tube sets, the first set of dual heat exchange tube sets may be as shown in fig. 7, the heat exchange tubes 720 of the first heat exchange tube set are serially connected in sequence, the heat exchange tubes 720 of the second heat exchange tube set are serially connected in sequence, and the first heat exchange tube set and the second heat exchange tube set are serially connected; the liquid inlet end and the liquid outlet end of the double-row heat exchange pipe set are arranged on one side, and the serial connection node of the two rows of heat exchange pipe sets is arranged on the other side. The second group of dual heat exchange tube sets can be as shown in fig. 6, the heat exchange tubes 720 of the first heat exchange tube set are sequentially connected in series, the heat exchange tubes 720 of the second heat exchange tube set are sequentially connected in series, and the first heat exchange tube set and the second heat exchange tube set are connected in series; the liquid inlet end and the liquid outlet end of the double-row heat exchange pipe set are arranged on one side, and the serial connection node of the two rows of heat exchange pipe sets is arranged on the other side. Here, the heat exchange tube group shown in fig. 6 may also be taken as a first group dual heat exchange tube group; the heat exchange tube bank shown in fig. 7 is taken as a second set of dual heat exchange tube banks. In this way, the heat exchange efficiency of the first heat exchange tube group 101 can be improved, thereby achieving a better heat exchange effect.
The embodiment of the disclosure provides an air conditioner, which comprises the heat exchange device.
By adopting the air conditioner provided by the embodiment of the disclosure, the heat exchange device is arranged on the outdoor unit of the air conditioner to replace an outdoor heat exchanger and a subcooler, and the paths through which the refrigerant flows are different in the cooling operation state and the heating operation state of the air conditioner through the design of the first heat exchange path 100, the second heat exchange path 200, the shunt path 400, the third heat exchange path 300, the first check valve 500 and the second check valve 600, so that the refrigerant sequentially passes through the second pipe section 220 of the first heat exchange path 100, the second heat exchange path 200 and the third heat exchange path 300 under the cooling operation condition, and the condensation and supercooling functions are realized; under the heating condition, the refrigerant sub-flows through the first heat exchange passage 100, the second pipe section 220 of the second heat exchange passage 200 and the third heat exchange passage 300 to form a parallel passage, so that the pressure loss in the refrigerant pipeline is effectively reduced, and the heat exchange effect of the air conditioner is further ensured.
Optionally, the heat exchange device may also be installed in an indoor unit of an air conditioner, and under a cooling condition, the refrigerant enters the heat exchange device from the fourth circulation node 704; and in a heating condition, the refrigerant enters the heat exchange device from the first circulation node 701.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A heat exchange device, comprising:
the first heat exchange passage comprises at least two heat exchange branches connected in parallel;
a second heat exchange path connected in parallel with the first heat exchange path; the second heat exchange path comprises a first pipe section and a second pipe section which are connected in series;
the shunt passage is connected in series with the second pipe section of the second heat exchange passage;
a third heat exchange passage connected in parallel with the second tube section of the second heat exchange passage and the shunt passage;
the first check valve is arranged at the first pipe section of the second heat exchange passage, and the conduction direction of the first check valve is defined to flow from the serial connection node of the second pipe section and the first pipe section to the parallel connection node of the second heat exchange passage and the first heat exchange passage;
and the conduction direction of the second check valve is limited to be that the second check valve flows from a parallel node of the shunt passage and the third heat exchange passage to a serial node of the shunt passage and the second heat exchange passage.
2. The heat exchange device of claim 1, wherein each of the heat exchange legs comprises one or more rows of heat exchange tubes connected in series.
3. The heat exchange device of claim 1, wherein the third heat exchange path comprises an supercooling tube group having a plurality of heat exchange tubes.
4. The heat exchange device of claim 3, wherein the plurality of heat exchange tubes of the supercooling tube bank are connected in series.
5. The heat exchange device of claim 3,
the first heat exchange passage comprises a first heat exchange tube set arranged on the heat exchange branch;
the second tube section of the second heat exchange path includes a second heat exchange tube set having a plurality of heat exchange tubes.
6. The heat exchange device of claim 5, wherein the number of heat exchange tubes of the second heat exchange tube set is less than or equal to the number of heat exchange tubes of the first heat exchange tube set.
7. The heat exchange device of claim 5, wherein the number of heat exchange tubes of the second heat exchange tube set is less than or equal to the number of heat exchange tubes of the supercooling tube set.
8. The heat exchange device of claim 5, wherein the first heat exchange tube bank, the second heat exchange tube bank, and the subcooling tube bank are in a single-column arrangement.
9. The heat exchange device of claim 5, wherein the first heat exchange tube bank, the second heat exchange tube bank, and the supercooling tube bank are arranged in a plurality of rows.
10. An air conditioner characterized by comprising the heat exchange device according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022427617.5U CN214039044U (en) | 2020-10-27 | 2020-10-27 | Heat exchange device and air conditioner |
| PCT/CN2021/132780 WO2022089661A1 (en) | 2020-10-27 | 2021-11-24 | Heat exchanging device and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022427617.5U CN214039044U (en) | 2020-10-27 | 2020-10-27 | Heat exchange device and air conditioner |
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| CN214039044U true CN214039044U (en) | 2021-08-24 |
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| CN202022427617.5U Active CN214039044U (en) | 2020-10-27 | 2020-10-27 | Heat exchange device and air conditioner |
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| Country | Link |
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| CN (1) | CN214039044U (en) |
| WO (1) | WO2022089661A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089661A1 (en) * | 2020-10-27 | 2022-05-05 | 青岛海尔空调器有限总公司 | Heat exchanging device and air conditioner |
| CN114508797A (en) * | 2022-01-28 | 2022-05-17 | 青岛海尔空调电子有限公司 | Heat exchanger |
| WO2023040282A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Heat exchanger, refrigeration cycle system, and air conditioner |
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| US4307578A (en) * | 1980-04-16 | 1981-12-29 | Atlantic Richfield Company | Heat exchanger efficiently operable alternatively as evaporator or condenser |
| JP2008121984A (en) * | 2006-11-13 | 2008-05-29 | Matsushita Electric Ind Co Ltd | Heat exchanger unit |
| CN101776356A (en) * | 2009-01-14 | 2010-07-14 | 珠海格力电器股份有限公司 | Heat exchanger |
| CN103148543B (en) * | 2011-12-07 | 2015-08-12 | 珠海格力电器股份有限公司 | Outdoor heat exchange device and air-conditioning system |
| KR101550549B1 (en) * | 2014-08-01 | 2015-09-04 | 엘지전자 주식회사 | An air conditioner |
| KR101630955B1 (en) * | 2014-10-29 | 2016-06-15 | 엘지전자 주식회사 | An air conditioner and Method of controlling the same |
| CN105865008A (en) * | 2016-04-14 | 2016-08-17 | 上海交通大学 | Heat pump type air-conditioning heat exchanger with heat exchange working medium flow direction and flow path number in synchronous change |
| CN206919454U (en) * | 2017-04-28 | 2018-01-23 | 青岛海尔空调器有限总公司 | Heat exchanger and air-conditioning device for air-conditioning device |
| CN214039044U (en) * | 2020-10-27 | 2021-08-24 | 青岛海尔空调器有限总公司 | Heat exchange device and air conditioner |
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2021
- 2021-11-24 WO PCT/CN2021/132780 patent/WO2022089661A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089661A1 (en) * | 2020-10-27 | 2022-05-05 | 青岛海尔空调器有限总公司 | Heat exchanging device and air conditioner |
| WO2023040282A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Heat exchanger, refrigeration cycle system, and air conditioner |
| WO2023040294A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Heat exchanger and refrigeration cycle system |
| WO2023040296A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Heat exchanger and refrigeration cycle system |
| WO2023040274A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Refrigeration cycle system, and air conditioner |
| WO2023040297A1 (en) * | 2021-09-19 | 2023-03-23 | 青岛海尔空调器有限总公司 | Heat exchanger and refrigeration cycle system |
| CN114508797A (en) * | 2022-01-28 | 2022-05-17 | 青岛海尔空调电子有限公司 | Heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022089661A1 (en) | 2022-05-05 |
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