CN112432390B - Heat exchanger for indoor unit and air conditioner - Google Patents

Heat exchanger for indoor unit and air conditioner Download PDF

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Publication number
CN112432390B
CN112432390B CN202011188694.8A CN202011188694A CN112432390B CN 112432390 B CN112432390 B CN 112432390B CN 202011188694 A CN202011188694 A CN 202011188694A CN 112432390 B CN112432390 B CN 112432390B
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China
Prior art keywords
flow path
control valve
air conditioner
heat exchanger
connecting end
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CN202011188694.8A
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Chinese (zh)
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CN112432390A (en
Inventor
周星宇
曾福祥
冯景学
王伟锋
郭敏
刘帅
刘光朋
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Priority to CN202011188694.8A priority Critical patent/CN112432390B/en
Publication of CN112432390A publication Critical patent/CN112432390A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0059Indoor units, e.g. fan coil units characterised by heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46Improving electric energy efficiency or saving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of air conditioners, and discloses a heat exchanger for an indoor unit, which comprises a first flow path, a second flow path and a heat exchanger, wherein the first flow path comprises a first end and a second end positioned at the upper part of the first end; a second flow path located at a lower portion of the first flow path, and including a third end and a fourth end located at an upper portion of the third end; the third flow path comprises a first connecting end and a second connecting end positioned at the lower part of the first connecting end; a controller configured to control a communication state of the first connection end and the first end according to an operation mode of the air conditioner; and the second connecting end is communicated with the fourth end. The device can change the flow of the upper and lower road shunting according to the operation mode of the air conditioner, and the energy efficiency of the air conditioner is improved. The application also discloses an air conditioner.

Description

Heat exchanger for indoor unit and air conditioner
Technical Field
The application relates to the technical field of air conditioners, for example to a heat exchanger and an air conditioner for indoor set.
Background
Currently, an air conditioner includes an indoor unit and an outdoor unit. The heat exchanger of the indoor unit has a plurality of flow paths. In general, the indoor unit heat exchanger includes an upper branch flow and a lower branch flow, and the upper branch flow and the lower branch flow are fixed in length, so the flow paths of the upper and lower flow paths corresponding to the cooling mode and the heating mode are fixed. However, when the air conditioner operates in the heating mode, the refrigerant entering the indoor unit heat exchanger is in a gaseous state, and the gaseous refrigerant is gathered at the upper part of the heat exchanger, so that a long flow path needs to be distributed in an upper branch. When the air conditioner operates in a refrigeration mode, a refrigerant entering the evaporator is in a gas-liquid two-phase state, so that a long flow needs to be distributed in a down-route in a shunting manner.
At present, the upper path flow distribution and the lower path flow distribution of a heat exchanger of an indoor unit are fixed processes, so that the processes of the upper path flow distribution and the lower path flow distribution corresponding to a refrigeration mode and a heating mode are also fixed. The existing flow dividing mode of the heat exchanger is to increase or decrease the length of the upper path flow dividing or the lower path flow dividing, and finally determine an upper and lower partial flow process which is acceptable in both a refrigeration mode and a heating mode. However, since the flows of the upper and lower paths of flow division corresponding to the cooling mode and the heating mode are different, the method for fixing the upper and lower paths of flow division cannot make the operation of the air conditioner reach the optimal state, and the energy consumption of the air conditioner is increased.
Disclosure of Invention
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 and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a heat exchanger and an air conditioner for an indoor unit, so that the flow of upper and lower path shunting is changed according to the operation mode of the air conditioner, and the energy efficiency of the air conditioner is improved.
In some embodiments, the heat exchanger for an indoor unit includes a first flow path including a first end and a second end located above the first end; a second flow path located at a lower portion of the first flow path, and including a third end and a fourth end located at an upper portion of the third end; the third flow path comprises a first connecting end and a second connecting end positioned at the lower part of the first connecting end; a controller configured to control a communication state of the first connection end and the first end according to an operation mode of the air conditioner; and the second connecting end is communicated with the fourth end.
In some embodiments, the communication state of the first connection end and the first end is controlled according to the operation mode of the air conditioner; and a state of communication between the second connection end and the fourth end, including disconnecting the first end from the first connection end and communicating the second connection end with the fourth end, in case the air conditioner operates in a cooling mode; and under the condition that the air conditioner operates in a heating mode, communicating the first end with the first connecting end and disconnecting the second connecting end from the fourth end.
In some embodiments, the heat exchanger for an indoor unit further includes a first communication pipe including a fifth end connected to the first end and a sixth end connected to the first connection end; the second communicating pipe comprises a seventh end connected with the fourth end and an eighth end connected with the second connecting end; the first control valve is arranged on the first communicating pipe; and the second control valve is arranged on the second communicating pipe.
In some embodiments, the first control valve and the second control valve are both check valves.
In some embodiments, the controller is further configured to control the third control valve to be turned on and the fourth control valve to be turned off when the air conditioner is operated in the cooling mode; wherein, the first end is equipped with the third control valve, the fourth end is equipped with the fourth control valve.
In some embodiments, the controller is further configured to control the fifth control valve to be turned off and the sixth control valve to be turned on in a case where the air conditioner is operated in a heating mode; the first connecting end is provided with the fifth control valve, and the second connecting end is provided with the sixth control valve.
In some embodiments, the heat exchanger for an indoor unit further includes a first bidirectional control valve connected to the first end and connected to the first connection end; a second bidirectional control valve connected to the fourth end and to the second connection end.
In some embodiments, the tubular body comprises a plurality of connected tubular segments, adjacent segments being removably connected; the first connecting end is communicated with the second connecting end through the pipe body.
In some embodiments, the tube diameter of the tube is greater than or equal to the maximum of the tube diameters of the first and second flow paths; the first connecting end is communicated with the second connecting end through a pipe body.
In some embodiments, the air conditioner comprises a heat exchanger for an indoor unit as described above.
The heat exchanger and the air conditioner for the indoor unit provided by the embodiment of the disclosure can realize the following technical effects:
the controller controls the communication state of the first connecting end of the third flow path and the first end of the first flow path and the communication state of the second connecting end of the third flow path and the fourth end of the second flow path according to the operation mode of the air conditioner, so that the third flow path is communicated with the first flow path or the third flow path is communicated with the second flow path under different operation modes of the air conditioner, the flow of upper path shunting or lower path shunting is increased, the flow of upper path shunting and lower path shunting can be changed according to the operation mode of the air conditioner, and the energy efficiency of the air conditioner is improved.
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 exchanger for an indoor unit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another heat exchanger for an indoor unit according to an embodiment of the disclosure;
fig. 3 is a schematic structural diagram of another heat exchanger for an indoor unit according to an embodiment of the disclosure;
fig. 4 is an operating state diagram of a heat exchanger for an indoor unit according to an embodiment of the present disclosure;
fig. 5 is another working state diagram of a heat exchanger for an indoor unit according to an embodiment of the present disclosure;
fig. 6 is an operating state diagram of a heat exchanger for an indoor unit according to an embodiment of the present disclosure;
fig. 7 is another operation state diagram of a heat exchanger for an indoor unit according to an embodiment of the present disclosure.
Reference numerals:
10: a first flow path; 20: a second flow path; 30: a third flow path; 10 a: a first end; 10 b: a second end; 20 a: a third end; 20 b: a fourth end; 30 a: a first connection end; 30 b: a second connection end; 100: a controller; 1: a first communication pipe; 1 a: a fifth end; 1 b: a sixth terminal; 2: a second communicating pipe; 2 a: a seventh terminal; 2 b: an eighth end; 3: a first control valve; 4: a second control valve; 5: a third control valve; 6: a fourth control valve; 7: a fifth control valve; 8: a sixth control valve; 9: a first bidirectional control valve; 10: a second bidirectional control valve.
Detailed Description
So that the manner in which the features and advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. 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 in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meanings of these terms in the embodiments of the present disclosure may be understood as specific cases by those of ordinary skill in the art.
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.
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.
Referring to fig. 1, a heat exchanger for an indoor unit according to an embodiment of the present disclosure includes a first flow path 10, a second flow path 20, a third flow path 30, and a controller 100. The first flow path 10 includes a first end 10a and a second end 10b located above the first end 10 a. The second channel 20 is located at a lower portion of the first channel 10, and includes a third end 20a and a fourth end 20b located at an upper portion of the third end 20 a. The third flow path 30 includes a first connection end 30a and a second connection end 30b located at a lower portion of the first connection end 30 a. The controller 100 is configured to control a communication state of the first connection terminal 30a with the first terminal 10a and a communication state of the second connection terminal 30b with the fourth terminal 20b according to an operation mode of the air conditioner.
By adopting the heat exchanger for the indoor unit, the controller controls the communication state of the first connecting end of the third flow path and the first end of the first flow path and the communication state of the second connecting end of the third flow path and the fourth end of the second flow path according to the operation mode of the air conditioner, so that the third flow path is communicated with the first flow path or the third flow path is communicated with the second flow path under different operation modes of the air conditioner, the flow of upper path shunting or lower path shunting is increased, the flow of upper path shunting and lower path shunting can be changed according to the operation mode of the air conditioner, and the energy efficiency of the air conditioner is improved.
Referring to fig. 2, an embodiment of the present disclosure further provides a heat exchanger for an indoor unit, including a first flow path 10, a second flow path 20, a third flow path 30, and a controller 100. The first flow path 10 includes a first end 10a and a second end 10b located above the first end 10 a. The second channel 20 is located at a lower portion of the first channel 10, and includes a third end 20a and a fourth end 20b located at an upper portion of the third end 20 a. The third flow path 30 includes a first connection end 30a and a second connection end 30b located at a lower portion of the first connection end 30 a. The controller 100 is configured to disconnect the first terminal 10a from the first connection terminal 30a and to communicate the second connection terminal 30b with the fourth terminal 20b in case the air conditioner operates in a cooling mode. In the case where the air conditioner operates in the heating mode, the first terminal 10a is connected to the first connection terminal 30a and the second connection terminal 30b is disconnected from the fourth terminal 20 b.
By adopting the heat exchanger for the indoor unit, provided by the embodiment of the disclosure, under the condition that the air conditioner operates in a cooling mode, the first end of the first flow path is disconnected from the first connecting end of the third flow path, and the second connecting end of the third flow path is communicated with the fourth end of the second flow path, so that the third flow path and the second flow path are connected in series to form a lower path shunt, and the lower path shunt has a longer flow path. When the air conditioner operates in a heating mode, the first end of the first flow path is communicated with the first connecting end of the third flow path, and the second connecting end of the third flow path is disconnected with the fourth end of the second flow path, so that the third flow path and the first flow path are connected in series to form an upper flow path, and the upper flow path has a longer flow path. In summary, the heat exchanger can change the flow of the upper shunt and the lower shunt according to the operation mode of the air conditioner, and the energy efficiency of the air conditioner is effectively improved.
Referring to fig. 2, an embodiment of the present disclosure further provides a heat exchanger for an indoor unit, including a first flow path 10, a second flow path 20, a third flow path 3, a first communication pipe 1, a second communication pipe 2, and a controller 100. The first flow path 10 includes a first end 10a and a second end 10b located above the first end 10 a. The second flow path 20 is located at a lower portion of the first flow path 10, and includes a third end 20a and a fourth end 20b located at an upper portion of the third end 20 a. The third flow path 30 includes a first connection end 30a and a second connection end 30b located at a lower portion of the first connection end 30 a. The controller 100 is configured to disconnect the first terminal 10a from the first connection terminal 30a and to communicate the second connection terminal 30b with the fourth terminal 20b in case the air conditioner operates in a cooling mode. In the case where the air conditioner is operated in the heating mode, the first terminal 10a is connected to the first connection terminal 30a and the second connection terminal 30b is disconnected from the fourth terminal 20 b. The first communication pipe 1 includes a fifth end 1a connected to the first end 1a and a sixth end 1b connected to the first connection end 30 a. The second communication tube 2 includes a seventh end 2a connected to the fourth end connection 20b and an eighth end 2b connected to the second connection end 30 b. The first control valve 3 is provided in the first communication pipe 1. The second control valve 4 is provided in the second communication pipe 2.
By adopting the heat exchanger for the indoor unit, provided by the embodiment of the disclosure, the on-off of the first control valve on the first communicating pipe is controlled by the controller, so that the flow length of the upper path of flow distribution can be adjusted, and the on-off of the second control valve on the second communicating pipe is controlled by the controller, so that the flow length of the lower path of flow distribution can be adjusted.
Optionally, the first control valve 3 and the second control valve 4 are both check valves. Therefore, the refrigerant can be prevented from reversely flowing in the first communicating pipe and the second communicating pipe, and the operation safety of the air conditioner is improved.
Alternatively, fig. 4 is a dynamic state diagram of the first control valve and the second control valve when the air conditioner is operated in the cooling mode. Referring to fig. 1 and 4, two first control valves 3 are respectively located at the connection position of the first communication pipe 1 and the first end 10a, and the connection position of the second communication pipe 2 and the first connection end 30 a. The first control valve 3 is a two-way valve. In this way, the series connection or the blocking of the first flow path and the third flow path can be realized by synchronously controlling the two first control valves.
Alternatively, fig. 5 illustrates a dynamic state diagram of the first and second control valves when the air conditioner is operating in the heating mode. As shown in fig. 1 and 5, two second control valves 4 are respectively located at the connection between the second communicating pipe 2 and the fourth end 20b, and at the connection between the second communicating pipe 2 and the first connection end 30 b. The second control valve 4 is a two-way valve. In this way, the second flow path and the third flow path can be connected in series or blocked by synchronously controlling the two second control valves.
As shown in fig. 2, an embodiment of the present disclosure further provides a heat exchanger for an indoor unit, including a first flow path 10, a second flow path 20, a third flow path 3, a first communication pipe 1, a second communication pipe 2, and a controller 100. The first flow path 10 includes a first end 10a and a second end 10b located above the first end 10 a. The second flow path 20 is located at a lower portion of the first flow path 10, and includes a third end 20a and a fourth end 20b located at an upper portion of the third end 20 a. The third flow path 30 includes a first connection end 30a and a second connection end 30b located at a lower portion of the first connection end 30 a. The controller 100 is configured to disconnect the first terminal 10a from the first connection terminal 30a and communicate the second connection terminal 30b with the fourth terminal 20b, control the third control valve 5 to be turned on, and control the fourth control valve 6 to be turned off, in case the air conditioner is operated in the cooling mode. In the case where the air conditioner is operated in the heating mode, the first terminal 10a is connected to the first connection terminal 30a and the second connection terminal 30b is disconnected from the fourth terminal 20 b. The first communication pipe 1 includes a fifth end 1a connected to the first end 1a and a sixth end 1b connected to the first connection end 30 a. The second communication tube 2 includes a seventh end 2a connected to the fourth end connection 20b and an eighth end 2b connected to the second connection terminal 30 b. The first control valve 3 is provided in the first communication pipe 1. The second control valve 4 is provided in the second communication pipe 2. Wherein the first end 10a is provided with a third control valve 5 and the fourth end 20b is provided with a fourth control valve 6.
By adopting the heat exchanger for the indoor unit provided by the embodiment of the disclosure, under the condition that the air conditioner operates in a cooling mode, the flow of the upper branch flow is not changed, and therefore, the conduction of the third control valve on the first end of the first flow path is controlled, so that the refrigerant can enter the first flow path through the first end of the first flow path. When the air conditioner is operated in the cooling mode, the flow of the refrigerant split flow is increased, and therefore, the refrigerant does not need to be sent to the second flow path through the fourth end of the second flow path, and therefore, the refrigerant is stopped by controlling the fourth control valve on the fourth end of the second flow path so that the refrigerant flows only in the lower flow path formed by the second flow path and the third flow path connected in series.
The embodiment of the present disclosure further provides a heat exchanger for an indoor unit, including a first flow path 10, a second flow path 20, a third flow path 3, a first communication pipe 1, a second communication pipe 2, and a controller 100. The first flow path 10 includes a first end 10a and a second end 10b located above the first end 10 a. The second channel 20 is located at a lower portion of the first channel 10, and includes a third end 20a and a fourth end 20b located at an upper portion of the third end 20 a. The third flow path 30 includes a first connection end 30a and a second connection end 30b located at a lower portion of the first connection end 30 a. The controller 100 is configured to disconnect the first terminal 10a from the first connection terminal 30a and to communicate the second connection terminal 30b with the fourth terminal 20b in case the air conditioner is operated in a cooling mode. In the case where the air conditioner operates in the heating mode, the first terminal 10a is connected to the first connection terminal 30a and the second connection terminal 30b is disconnected from the fourth terminal 20 b; the fifth control valve 7 is controlled to be closed and the sixth control valve 8 is controlled to be opened. The first communication pipe 1 includes a fifth end 1a connected to the first end 1a and a sixth end 1b connected to the first connection end 30 a. The second communication tube 2 includes a seventh end 2a connected to the fourth end connection 20b and an eighth end 2b connected to the second connection terminal 30 b. The first control valve 3 is provided in the first communication pipe 1. The second control valve 4 is provided in the second communication pipe 2. Wherein the first end 10a is provided with a third control valve 5 and the fourth end 20b is provided with a fourth control valve 6. The first connection end 30a is provided with a fifth control valve 7, and the second connection end 30b is provided with a sixth control valve 8.
By adopting the heat exchanger for the indoor unit provided by the embodiment of the disclosure, under the condition that the air conditioner operates in a heating mode, the flow of the upper shunting is increased, and therefore, the fifth control valve on the first connecting end of the third flow path is controlled to be closed, so that the refrigerant cannot enter the third flow path through the first connecting end of the third flow path. When the air conditioner is operated in the heating mode, the flow of the refrigerant branched from the lower path is not changed, and therefore, the sixth control valve at the second connection end of the third flow path is controlled to be opened, so that the refrigerant can flow through the upper flow path formed by connecting the first flow path and the third flow path in series.
Fig. 6 is a dynamic state diagram of the first and second bidirectional control valves when the air conditioner is operating in the cooling mode. Fig. 7 is a dynamic state diagram of the first and second bidirectional control valves when the air conditioner is operating in the heating mode. As shown in fig. 3, 6, and 7, an embodiment of the present disclosure further provides a heat exchanger for an indoor unit, including a first flow path 10, a second flow path 20, a third flow path 30, a first bidirectional control valve 9, a second bidirectional control valve 10, and a controller 100. The first flow path 10 includes a first end 10a and a second end 10b located above the first end 10 a. The second flow path 20 is located at a lower portion of the first flow path 10, and includes a third end 20a and a fourth end 20b located at an upper portion of the third end 20 a. The third flow path 30 includes a first connection end 30a and a second connection end 30b located at a lower portion of the first connection end 30 a. The controller 100 is configured to disconnect the first terminal 10a from the first connection terminal 30a and to communicate the second connection terminal 30b with the fourth terminal 20b in case the air conditioner operates in a cooling mode. In the case where the air conditioner is operated in the heating mode, the first terminal 10a is connected to the first connection terminal 30a and the second connection terminal 30b is disconnected from the fourth terminal 20 b. The first bidirectional control valve 9 is connected to the first end 10a and to the first connection end 30 a. The second bidirectional control valve 10 is connected to the fourth end 20b and to the second connection 30 b.
By adopting the heat exchanger for the indoor unit, provided by the embodiment of the disclosure, under the condition that the air conditioner operates in a refrigeration mode, the first bidirectional control valve is controlled to be conducted in a bidirectional mode, the second bidirectional control valve is controlled to be conducted in a unidirectional mode, at the moment, the third flow path is connected with the second flow path in series, and the flow of shunting the lower path is increased. When the air conditioner operates in a heating mode, the first bidirectional control valve is controlled to be in one-way conduction and the second bidirectional control valve is controlled to be in two-way conduction, at the moment, the third flow path is connected with the first flow path in series, and the flow of upper branch flow is increased.
Optionally, the tubular body (not shown) comprises a plurality of interconnected tubular segments, with adjacent segments being releasably connected. Wherein the first connection end 30a communicates with the second connection end 20b through a pipe body. Therefore, the flow of the upper shunt or the lower shunt can be obtained through calculation, and the pipe section with the corresponding length is selected from the third flow according to the flow, so that the adjustment of the flow of the upper shunt and the lower shunt is more flexible.
Optionally, the pipe diameter of the pipe (not shown) is greater than or equal to the maximum value of the pipe diameters of the first flow path 10 and the second flow path 20. Wherein the first connection end 30a is communicated with the second connection end 30b through a pipe body. In this way, when the first flow path and the third flow path are connected in series, the refrigerant passes through substantially the same pipe diameter while flowing from the third flow path into the first flow path, and the flow of the refrigerant is made smoother. When the second flow path and the third flow path are connected in series, the refrigerant passes through substantially the same pipe diameter while flowing from the second flow path into the third flow path, and the flow of the refrigerant is smoother.
The embodiment of the disclosure also provides an air conditioner, which comprises the heat exchanger for the indoor unit. The heat exchanger for an indoor unit includes a first flow path 10, a second flow path 20, a third flow path 30, and a controller 100. The first flow path 10 includes a first end 10a and a second end 10b located above the first end 10 a. The second flow path 20 is located at a lower portion of the first flow path 10, and includes a third end 20a and a fourth end 20b located at an upper portion of the third end 20 a. The third flow path 30 includes a first connection end 30a and a second connection end 30b located at a lower portion of the first connection end 30 a. The controller 100 is configured to control a communication state of the first connection terminal 30a with the first terminal 10a and a communication state of the second connection terminal 30b with the fourth terminal 20b according to an operation mode of the air conditioner.
By adopting the air conditioner provided by the embodiment of the disclosure, the controller controls the communication state of the first connecting end of the third flow path and the first end of the first flow path and the communication state of the second connecting end of the third flow path and the fourth end of the second flow path according to the operation mode of the air conditioner, so that the third flow path is communicated with the first flow path or the third flow path is communicated with the second flow path under different operation modes of the air conditioner, thereby increasing the flow of upper path shunt or lower path shunt, so that the flow of upper path shunt and lower path shunt can be changed according to the operation mode of the air conditioner, and the energy efficiency of the air conditioner is improved.
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 illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. A heat exchanger for an indoor unit, comprising:
a first flow path including a first end and a second end located at an upper portion of the first end;
a second flow path located at a lower portion of the first flow path and including a third end and a fourth end located at an upper portion of the third end;
the third flow path comprises a first connecting end and a second connecting end positioned at the lower part of the first connecting end;
a controller configured to control a communication state of the first connection end and the first end according to an operation mode of the air conditioner; and the second connecting end is communicated with the fourth end;
controlling the communication state of the first connecting end and the first end according to the operation mode of the air conditioner; and, the second link with the fourth end's connected state includes:
disconnecting the first end from the first connection end and communicating the second connection end with the fourth end when the air conditioner is operated in a cooling mode;
and under the condition that the air conditioner operates in a heating mode, communicating the first end with the first connecting end and disconnecting the second connecting end from the fourth end.
2. The heat exchanger of claim 1, further comprising:
the first connecting pipe comprises a fifth end connected with the first end and a sixth end connected with the first connecting end;
the second communicating pipe comprises a seventh end connected with the fourth end and an eighth end connected with the second connecting end;
the first control valve is arranged in the first communicating pipe;
and the second control valve is arranged on the second communicating pipe.
3. The heat exchanger of claim 2, wherein the first control valve and the second control valve are both check valves.
4. The heat exchanger of claim 2, wherein the controller is further configured to control the third control valve to be turned on and the fourth control valve to be turned off when the air conditioner is operated in the cooling mode;
the first end is provided with the third control valve, and the fourth end is provided with the fourth control valve.
5. The heat exchanger of claim 2, wherein the controller is further configured to control the fifth control valve to be turned off and the sixth control valve to be turned on when the air conditioner is operating in the heating mode;
the first connecting end is provided with the fifth control valve, and the second connecting end is provided with the sixth control valve.
6. The heat exchanger of claim 1, further comprising:
the first bidirectional control valve is connected with the first end and the first connecting end;
a second bidirectional control valve connected to the fourth end and to the second connection end.
7. The heat exchanger according to any one of claims 1 to 6, wherein the tubular body comprises a plurality of communicating tubular segments, adjacent tubular segments being removably connected;
the first connecting end is communicated with the second connecting end through the pipe body.
8. The heat exchanger according to any one of claims 1 to 6, wherein the tube diameter of the tube body is greater than or equal to the maximum of the tube diameters of the first and second flow paths;
the first connecting end is communicated with the second connecting end through a pipe body.
9. An air conditioner characterized by comprising the heat exchanger for an indoor unit as claimed in any one of claims 1 to 8.
CN202011188694.8A 2020-10-30 2020-10-30 Heat exchanger for indoor unit and air conditioner Active CN112432390B (en)

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Publication number Priority date Publication date Assignee Title
CN114608220B (en) * 2022-03-23 2024-03-26 西安交通大学 Heat exchanger, heat exchanger flow path control method, readable storage medium and air conditioner

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CN201173648Y (en) * 2008-03-14 2008-12-31 四川长虹电器股份有限公司 Heat converter
JP2012122670A (en) * 2010-12-08 2012-06-28 Daikin Industries Ltd Air conditioner
CN105466083A (en) * 2015-12-24 2016-04-06 珠海格力电器股份有限公司 Heat pump air conditioner heat exchanger with variable flow path and control method thereof
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
CN108036412A (en) * 2018-01-08 2018-05-15 珠海格力电器股份有限公司 Pipeline system and air conditioner with same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201173648Y (en) * 2008-03-14 2008-12-31 四川长虹电器股份有限公司 Heat converter
JP2012122670A (en) * 2010-12-08 2012-06-28 Daikin Industries Ltd Air conditioner
CN105466083A (en) * 2015-12-24 2016-04-06 珠海格力电器股份有限公司 Heat pump air conditioner heat exchanger with variable flow path and control method thereof
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
CN108036412A (en) * 2018-01-08 2018-05-15 珠海格力电器股份有限公司 Pipeline system and air conditioner with same

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